/* Generated by website/qa/visit-20261008/build_styles.py.
   Edit the source modules. Source order and hashes: style-manifest.json. */

/* 01. site.css */
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:#193c3f;background:#f6f5ef;font:16px/1.8 "Microsoft YaHei","PingFang SC",sans-serif}button,input,select{font:inherit}a{color:inherit;text-decoration:none}button{cursor:pointer;border:0}button:disabled{opacity:.45;cursor:default}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #c1842b;outline-offset:4px}img{max-width:100%}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.35;font-weight:600}h1{font-size:clamp(36px,4.5vw,66px);letter-spacing:-2px}h2{font-size:clamp(26px,3vw,38px)}h3{font-size:21px}p{color:#5b6d6c}small{font-size:12px}.header{position:sticky;top:0;z-index:30;min-height:90px;display:flex;align-items:center;justify-content:space-between;padding:16px max(4vw,22px);background:#f6f5eff5;border-bottom:1px solid #dce1d7;backdrop-filter:blur(14px)}.brand{display:flex;gap:12px;align-items:center;flex-shrink:0;font-size:21px;font-weight:700;letter-spacing:2px}.brand img{width:42px;height:42px}.brand small{display:block;letter-spacing:1px;font-weight:400;color:#71827d;font-size:10px}.header nav{display:flex;gap:26px;font-size:14px}.header nav a{padding:7px 0;border-bottom:2px solid transparent}.header nav a[aria-current]{border-color:#155a54;color:#155a54;font-weight:bold}.menu{display:none}.skip{position:fixed;top:-60px;left:15px;background:white;z-index:99;padding:10px}.skip:focus{top:0}.shell{max-width:1280px;margin:auto;padding:64px 5vw}.eyebrow{font-size:12px;letter-spacing:3px;color:#477873;font-weight:600;margin-bottom:22px;display:flex;align-items:center;gap:12px}.eyebrow:before{content:"";width:26px;height:2px;background:currentColor}.hero{max-width:1440px;min-height:590px;margin:auto;display:grid;grid-template-columns:1fr 1.1fr;align-items:center;padding:65px 5vw 45px;gap:35px}.hero h1{margin-bottom:25px}.hero h1 em{font-style:normal;color:#377f72}.hero p{max-width:450px;line-height:2}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;gap:25px;padding:12px 24px;background:#124d48;color:white;border:1px solid #124d48;border-radius:4px;font-size:14px;min-height:48px}.button:hover{background:#22685e}.button.light{background:transparent;color:#194a46;border-color:#bccbc1}.button.light:hover{background:#e8ece1}.hero-art{border-radius:150px 10px 10px 10px;overflow:hidden;background:#123f43;position:relative;aspect-ratio:1.05}.hero-art svg{display:block;width:100%;height:100%}.art-label{position:absolute;left:30px;bottom:25px;color:#d2e2d5;font-size:11px;letter-spacing:2px}.hero-note{font-size:11px;color:#72827b;margin-top:27px}.visit-strip{border-top:1px solid #d8dfd3;border-bottom:1px solid #d8dfd3;max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1.2fr repeat(3,1fr);padding:25px 5vw;gap:25px;align-items:center}.visit-strip a{font-size:14px}.visit-strip a b{font-size:11px;display:block;color:#78877f;letter-spacing:1px;margin-bottom:4px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}.section-head p{max-width:470px;margin-bottom:0;font-size:14px}.section-head h2{margin-bottom:0}.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.tile{border-top:1px solid #b4c7bb;padding-top:24px;display:block;transition:transform .2s}.tile:hover{transform:translateY(-4px)}.tile .number{color:#799889;font:14px Georgia,serif;display:block;margin-bottom:35px}.tile p{font-size:14px;max-width:320px}.tile .arrow{display:block;font-size:24px;color:#3e7166}.band{background:#e9edde}.band .shell{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.quote{font:normal 30px/1.7 "Microsoft YaHei",sans-serif;letter-spacing:1px}.meta{font-size:12px;color:#71837a}.pagehead{padding-bottom:28px}.pagehead h1{font-size:clamp(34px,4vw,50px);margin-bottom:20px}.pagehead p{max-width:720px}.chips{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.chip{padding:7px 15px;border:1px solid #c4d0c6;border-radius:30px;background:transparent;color:#345950;font-size:13px}.chip:hover,.chip.active{background:#174f48;color:white;border-color:#174f48}.tech-layout{display:grid;grid-template-columns:1fr 1fr;gap:45px;margin-top:15px;align-items:start}.diagram{background:#123f43;color:white;padding:35px;border-radius:8px;min-height:385px}.diagram small{color:#b3cbbd}.diagram-flow{display:grid;gap:12px;margin:30px 0}.diagram-flow button{padding:15px;background:#24565a;color:#eaf3e1;border:1px solid #577e70;text-align:left;border-radius:4px;display:flex;justify-content:space-between}.diagram-flow button.active{background:#d8e7ad;color:#16443e}.definition{padding:24px 0;border-bottom:1px solid #d8dfd3}.definition h3{margin-bottom:10px}.definition p{margin-bottom:10px}.source-link{color:#4b7f70;font-size:12px;border-bottom:1px solid #b9cabd}.split{display:grid;grid-template-columns:1fr 1fr;gap:40px}.notice{padding:18px 22px;border-left:3px solid #9eac76;background:#edf0e5;font-size:14px;color:#5d6b54;margin:25px 0}.timeline{margin:35px 0}.time-row{display:grid;grid-template-columns:150px 1fr;gap:25px;padding:25px 0;border-bottom:1px solid #d6dfd4}.time-row time{font:22px Georgia,serif;color:#367b69}.time-row h3{margin-bottom:8px}.time-row p{margin:0;font-size:14px}.story-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px}.story{border:1px solid #d1d9cb;padding:25px;background:#fafaf6;border-radius:4px}.story summary{cursor:pointer;list-style:none;display:flex;gap:15px;align-items:baseline}.story summary:after{content:'＋';margin-left:auto}.story[open] summary:after{content:'−'}.story summary span{color:#759782;font-size:12px}.story h3{font-size:18px;margin:0}.story p{font-size:14px;margin:20px 0 0}.portrait-type{background:#153f43;border-radius:5px;color:#f1f4df;padding:45px;min-height:270px;display:flex;flex-direction:column;justify-content:center}.portrait-type strong{font-size:58px;font-weight:500;letter-spacing:15px}.portrait-type span{font:25px Georgia,serif;letter-spacing:3px;color:#c8dca7}.portrait-type p{color:#b8cabe;margin-top:20px}.exhibit{background:#09203e;padding:12px;border-radius:7px}.exhibit img{display:block;width:100%;aspect-ratio:16/9;object-fit:contain}.gallery-layout{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:28px;align-items:start}.board-menu{display:flex;flex-direction:column;gap:8px}.board-menu button{text-align:left;padding:14px;border:1px solid #d3ddce;background:transparent;color:#34574c;border-radius:4px;font-size:13px}.board-menu button.active{background:#1b5149;color:#fff;border-color:#1b5149}.board-menu button span{margin-right:10px;font-family:Georgia,serif}.gallery-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:18px 0;flex-wrap:wrap}.gallery-text{margin-top:30px;padding:25px 0;border-top:1px solid #d3ddce}.gallery-text p{font-size:15px}.exhibit:fullscreen{display:flex;align-items:center;justify-content:center;background:#09192e;padding:0}.exhibit:fullscreen img{max-height:100vh;width:100%;object-fit:contain}.experience-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:30px;align-items:start}.chatbox{border:1px solid #c9d9ce;background:#fff;border-radius:8px;overflow:hidden}.chat-title{background:#194c47;color:white;padding:19px 25px;display:flex;justify-content:space-between;align-items:center}.chat-title small{color:#c3d6bf}.messages{height:330px;overflow:auto;padding:25px;display:flex;flex-direction:column;gap:14px}.message{padding:15px 18px;background:#edf1e7;border-radius:0 12px 12px 12px;max-width:95%;font-size:14px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}.message.user{align-self:flex-end;background:#174f48;color:white;border-radius:12px 0 12px 12px}.chatform{display:flex;border-top:1px solid #dee5d9;padding:12px;gap:10px}.chatform input{min-width:0;flex:1;border:0;background:#f5f6ef;padding:12px;border-radius:3px;font-size:14px}.chatform button{padding:10px 18px;background:#194d47;color:white;border-radius:3px}.experience-card{border:1px solid #cbd8c8;padding:28px;margin-bottom:18px;border-radius:5px}.experience-card .symbol{font-size:32px;margin-bottom:15px}.experience-card p{font-size:14px}.frame-wrap{height:70vh;min-height:420px;border:1px solid #bdcbbb;margin-top:25px}.frame-wrap iframe{height:100%;width:100%;border:0;background:#102139}.frame-top{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:30px}.frame-top h2{font-size:24px}.session-plan{border:1px solid #d1dcca;padding:28px;border-radius:5px}.status{display:inline-block;padding:4px 10px;border-radius:25px;background:#e6ecdb;color:#526946;font-size:12px}.plan-row{display:grid;grid-template-columns:125px 1fr;padding:18px 0;border-bottom:1px solid #dbe3d5;gap:15px}.plan-row strong{font-size:14px;color:#4d806a}.plan-row p{font-size:14px;margin:0}.documents{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}.doc-item{padding:25px 0;border-bottom:1px solid #cbd9cb}.doc-item h3{font-size:17px}.doc-item button,.doc-item a{font-size:13px;margin-right:24px;color:#266b59;background:none;padding:0;border-bottom:1px solid #abc0aa}.source-row{padding:24px 0;border-bottom:1px solid #d1dcca;display:grid;grid-template-columns:55px 1fr;gap:15px}.source-row h3{font-size:18px}.source-row p{font-size:14px;margin-bottom:7px}.source-row .sid{font-family:Georgia,serif;color:#6d9078}footer{background:#123f43;color:#eef2e0;margin-top:50px}.footer-inner{max-width:1280px;margin:auto;padding:45px 5vw;display:grid;grid-template-columns:1.2fr 1fr .9fr;gap:30px}.footer-inner strong{font-size:19px}.footer-inner p{font-size:12px;color:#bacdc0;margin:15px 0 0}.footer-inner a{font-size:13px}.reader-toolbar{position:sticky;top:0;background:#fff;padding:20px 30px;border-bottom:1px solid #d4ddcf;display:flex;align-items:center;justify-content:space-between;gap:25px;z-index:2}.reader-toolbar h2{font-size:20px;margin:0}.reader-toolbar button{flex-shrink:0}dialog{width:min(1050px,95vw);max-height:90vh;padding:0;border:0;border-radius:8px;color:#23443d}dialog::backdrop{background:#052e36a8;backdrop-filter:blur(4px)}#reader-body{padding:35px 50px;overflow-wrap:anywhere}#reader-body p{white-space:pre-line;font-size:15px;color:#334d47}#reader-body table{width:100%;border-collapse:collapse;font-size:13px}#reader-body td{border:1px solid #d6dfd1;padding:10px;vertical-align:top}.table-scroll{overflow:auto}.next{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #c7d6c3;margin-top:50px;padding-top:25px}.next a{font-size:14px}.answer-form{display:grid;gap:12px;margin-top:18px}.answer-form label{font-size:14px;display:block}.answer-form select{padding:8px;max-width:100%}.quiz-result{color:#285f46;margin-top:15px}.text-link{color:#266e5c;border-bottom:1px solid #a3bda5}@media(max-width:1050px){.header nav{gap:15px;font-size:12px}.brand{font-size:18px}.hero{min-height:520px}.gallery-layout{grid-template-columns:1fr}.board-menu{display:grid;grid-template-columns:repeat(4,1fr)}.hero-art{border-top-left-radius:100px}.tech-layout{gap:25px}}@media(max-width:760px){.header{min-height:75px;padding:13px 20px}.menu{display:block;background:none;color:#174d45;font-size:14px}.header nav{display:none;position:absolute;top:75px;left:0;right:0;background:#f6f5ef;padding:20px;box-shadow:0 15px 20px #153a3414;font-size:16px}.header nav.open{display:grid;grid-template-columns:1fr 1fr;gap:15px}.hero{display:flex;flex-direction:column;padding:35px 22px;gap:30px;align-items:stretch}.hero h1{font-size:44px;letter-spacing:-1px}.hero p{font-size:14px}.hero-art{aspect-ratio:1.35;max-height:420px}.hero-note{margin-top:20px}.shell{padding:40px 22px}.visit-strip{margin:0 22px;grid-template-columns:1fr 1fr;padding:20px 0;font-size:13px;gap:15px}.visit-strip>strong{font-size:14px}.tiles{grid-template-columns:1fr;gap:10px}.tile{display:grid;grid-template-columns:35px 1fr 25px;column-gap:10px;padding-top:20px;margin-bottom:15px}.tile .number{grid-row:1/3;margin:0}.tile h3{font-size:20px}.tile p{grid-column:2;font-size:13px}.tile .arrow{grid-column:3;grid-row:1}.band .shell,.split,.tech-layout,.experience-grid{grid-template-columns:1fr;gap:25px}.section-head{display:block}.section-head p{margin-top:15px}.quote{font-size:25px}.story-grid{grid-template-columns:1fr}.time-row{grid-template-columns:105px 1fr;gap:15px}.time-row time{font-size:18px}.time-row h3{font-size:18px}.board-menu{grid-template-columns:repeat(2,1fr);gap:7px}.board-menu button{font-size:12px;padding:10px}.gallery-actions .button{padding:9px 12px;font-size:12px;min-height:42px}.documents{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr;padding:35px 22px;gap:25px}.footer-inner p{margin-top:8px}.pagehead h1{font-size:36px}.plan-row{grid-template-columns:85px 1fr;font-size:13px}.session-plan{padding:20px}.messages{height:320px;padding:15px}.chatform button{padding:8px 12px}.reader-toolbar{padding:15px;gap:10px}.reader-toolbar h2{font-size:15px}#reader-body{padding:22px}.reader-toolbar .button{padding:8px;min-height:38px}.source-row{grid-template-columns:35px 1fr}.portrait-type{padding:30px}.diagram{padding:25px;min-height:350px}.next{gap:20px}.next span{font-size:12px}.frame-wrap{min-height:450px}.art-label{font-size:9px;bottom:16px;left:23px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

@media(max-width:760px){.tile{display:block;position:relative;padding-right:25px}.tile .number{display:block;margin:0 0 12px;font-size:11px}.tile h3{margin-bottom:12px}.tile .arrow{position:absolute;right:0;top:48px}.tile p{max-width:none;margin-bottom:8px}}

/* 02. xiaotie.css */
.secondary-experiences{grid-template-columns:minmax(0,.65fr) minmax(0,1.35fr);gap:48px}
.xt-guide{min-width:0;scroll-margin-top:110px}.xt-card{border:1px solid #c2d0be;border-radius:16px;overflow:hidden;background:#fffef9;box-shadow:0 12px 36px #284e3910}.xt-header{padding:22px;display:flex;align-items:center;justify-content:space-between;gap:15px;background:#174e43;color:#fffef3}.xt-identity{display:flex;gap:13px;align-items:center;min-width:0}.xt-avatar{display:grid;place-items:center;width:48px;height:48px;border-radius:15px;background:#f1f4da;flex-shrink:0}.xt-avatar img{width:32px;height:32px}.xt-header h3{font-size:21px;font-family:var(--serif);margin:0}.xt-header h3 span{display:block;font:11px/1.6 "Microsoft YaHei",sans-serif;color:#e3ead4;margin-top:3px}.xt-header p{font-size:10px;color:#d0e2d0;margin:7px 0 0;display:flex;align-items:center;gap:6px}.xt-header i{width:6px;height:6px;background:#cbdca6;border-radius:50%}.xt-reset{color:#e3ead4;background:transparent;border:1px solid #63867a;border-radius:7px;padding:8px 10px;font-size:11px;flex-shrink:0;min-height:38px}.xt-reset:hover{background:#2d6256}.xt-toolbar{padding:12px 22px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid #e3e8da}.xt-toolbar>span{font-size:11px;color:#617464}.xt-modes{display:flex;background:#edf1e7;border-radius:7px;padding:3px}.xt-modes button{font-size:11px;color:#4f6658;background:none;border-radius:5px;padding:7px 13px;min-height:34px}.xt-modes button[aria-pressed=true]{background:#fffef9;color:#174e43;box-shadow:0 1px 5px #26482e15;font-weight:bold}.xt-messages{height:390px;overflow-y:auto;overscroll-behavior:contain;padding:24px 22px;display:flex;flex-direction:column;gap:24px;scrollbar-width:thin;scrollbar-color:#bccfbc transparent}.xt-message{max-width:94%;flex-shrink:0;min-width:0}.xt-speaker{display:block;font-size:10px;font-weight:600;color:#617665;margin:0 0 6px 3px}.xt-bubble{border:1px solid #e2e7d8;border-radius:0 13px 13px 13px;background:#f1f4e9;padding:15px 17px;color:#25473c}.xt-text{font-size:14px;line-height:1.95;white-space:pre-wrap;overflow-wrap:anywhere}.xt-user{align-self:flex-end;max-width:85%}.xt-user .xt-speaker{text-align:right;margin-right:3px}.xt-user .xt-bubble{background:#1c584a;border-color:#1c584a;color:#fffef6;border-radius:13px 0 13px 13px}.xt-sources{border-top:1px solid #cedbc5;margin-top:13px;padding-top:9px;font-size:11px;white-space:normal}.xt-sources summary{cursor:pointer;color:#426a4e;min-height:26px;line-height:26px}.xt-sources ul{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:10px}.xt-sources a{display:block;line-height:1.7;color:#305e4b;overflow-wrap:anywhere}.xt-sources a:hover{text-decoration:underline}.xt-sources a span{display:block;font-size:10px;color:#66785c}.xt-related{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;padding-top:9px;border-top:1px solid #d5dfca}.xt-related a{font-size:11px;color:#245c44;text-decoration:underline;text-underline-offset:3px}.xt-follow{padding:0 22px 17px;display:grid;gap:8px}.xt-follow:empty{display:none}.xt-follow-label{font-size:10px;color:#657862}.xt-suggestions{display:flex;flex-wrap:wrap;gap:7px}.xt-suggestions button{display:flex;gap:10px;align-items:center;justify-content:space-between;text-align:left;font-size:11px;line-height:1.65;padding:8px 11px;background:#fffef9;border:1px solid #cad7c2;border-radius:7px;color:#315d47;min-height:36px;max-width:100%;overflow-wrap:anywhere}.xt-suggestions button:hover{background:#eaf0df;border-color:#9eb692}.xt-suggestions button span{color:#789064;flex-shrink:0}.xt-form{padding:16px 22px 13px;border-top:1px solid #dce5d2;background:#fafbf5}.xt-input-label{display:block;font-size:11px;font-weight:bold;color:#4e6657;margin-bottom:8px}.xt-compose{display:flex;gap:8px}.xt-compose input{flex:1;min-width:0;background:#fff;border:1px solid #c6d3be;padding:11px 12px;border-radius:7px;font-size:13px;color:#244d3e;min-height:45px}.xt-compose button{flex-shrink:0;background:#1b5748;color:#fff;border-radius:7px;padding:10px 16px;font-size:12px;min-height:45px}.xt-compose button:hover{background:#286d59}.xt-input-note{display:flex;justify-content:space-between;gap:12px;margin-top:9px;color:#65735f;font-size:9px;line-height:1.7}.xt-input-note>span:last-child{white-space:nowrap}.xt-starters{margin-top:19px}.xt-categories{display:flex;gap:20px;margin-bottom:10px;border-bottom:1px solid #d4dec9}.xt-categories button{padding:7px 0;background:none;font-size:11px;color:#667c63;border-bottom:2px solid transparent;min-height:36px}.xt-categories button[aria-pressed=true]{color:#235e42;border-bottom-color:#235e42;font-weight:bold}.xt-boundary{font-size:10px;line-height:1.9;color:#65765c;margin:14px 0 0}.xt-boundary a{color:#315f45;text-decoration:underline;text-underline-offset:3px}.xt-guide button:focus-visible,.xt-guide a:focus-visible,.xt-guide input:focus-visible,.xt-guide summary:focus-visible,.xt-messages:focus-visible{outline:3px solid #ba852c;outline-offset:3px}
@media(max-width:900px){.secondary-experiences{gap:28px;grid-template-columns:minmax(0,.6fr) minmax(0,1.4fr)}.xt-header{padding:18px}.xt-toolbar{padding:12px 18px}.xt-messages{padding:20px 18px}.xt-follow{padding:0 18px 15px}.xt-form{padding:15px 18px}}
@media(max-width:760px){.secondary-experiences{grid-template-columns:minmax(0,1fr);gap:38px}.xt-messages{height:370px}.xt-message{max-width:98%}.xt-card{border-radius:12px}.xt-text{font-size:13px}.xt-bubble{padding:13px 14px}.xt-header h3{font-size:21px}.xt-boundary{font-size:10px}}
@media(max-width:380px){.xt-header{padding:15px 12px;gap:8px}.xt-avatar{width:37px;height:37px;border-radius:11px}.xt-avatar img{width:27px;height:27px}.xt-identity{gap:9px}.xt-reset{padding:7px;font-size:10px}.xt-header h3 span{font-size:10px}.xt-header p{font-size:9px}.xt-toolbar{padding:10px 12px}.xt-modes button{padding:7px 10px}.xt-messages{padding:17px 12px;height:360px}.xt-follow{padding:0 12px 13px}.xt-form{padding:13px 12px}.xt-compose input{padding:9px;font-size:12px}.xt-compose button{padding:9px 11px}.xt-categories{gap:18px}}

/* 03. museum-system.css */
/* Active museum design system: the same navigation, type and surfaces on every route. */
:root{--ink:#142f3f;--muted:#536571;--paper:#f8f9f7;--surface:#fff;--line:#d9e0e2;--accent:#b43d32;--accent-dark:#933127;--teal:#087d83;--sans:'Microsoft YaHei','PingFang SC',system-ui,sans-serif;--radius:12px}
html{scroll-padding-top:110px;scrollbar-gutter:stable}body{font:400 1rem/1.85 var(--sans);color:var(--ink);background:var(--paper)}body.reader-open{overflow:hidden}
h1,h2,h3,h4,.quote{font-family:var(--sans);font-weight:600;letter-spacing:-.025em}p{color:var(--muted)}button,input,select{font-family:inherit}a,button{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
:is(a,button,input,select,summary,[tabindex='0']):focus-visible{outline:3px solid var(--accent);outline-offset:4px}#main:focus,#main [tabindex='-1']:focus{outline:none}[hidden]{display:none!important}::selection{background:#b43d3224;color:var(--ink)}
.header{min-height:88px;padding:16px max(5vw,24px);background:#f8f9f7f2;border-color:var(--line);gap:24px}.brand{font-size:1.5rem;font-weight:600;letter-spacing:-.035em;gap:12px}.brand img{width:36px;height:36px}.brand small{display:none}
.header nav{gap:32px;font-size:.9375rem}.header nav a{display:flex;align-items:center;min-height:44px;padding:8px 0;border:0;position:relative;color:var(--muted);font-weight:400}.header nav a::after{content:'';position:absolute;bottom:2px;left:0;right:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s}.header nav a:hover,.header nav a[aria-current]{color:var(--accent-dark);font-weight:600}.header nav a[aria-current]::after,.header nav a:hover::after{transform:scaleX(1)}
.menu{display:none;border:1px solid var(--line);border-radius:8px;min-height:44px;padding:8px 14px;color:var(--ink);background:var(--surface);font-size:.875rem}.skip{top:-100px;border-radius:8px;color:var(--ink)}.skip:focus{top:12px}
.shell{max-width:1400px;padding:52px 5vw 72px}.pagehead{padding:0;margin-bottom:28px;border:0}.pagehead .eyebrow{color:var(--accent-dark);font-size:.875rem;letter-spacing:.035em;margin-bottom:14px;font-weight:400}.eyebrow{font-size:.8125rem;letter-spacing:.03em;color:var(--accent-dark)}.eyebrow::before{display:none}.pagehead h1{font-size:clamp(2rem,3.5vw,3.25rem);line-height:1.4;margin:0 0 16px}.pagehead p{font-size:1rem;max-width:780px;margin:0}
.section-tabs{display:flex;flex-wrap:wrap;gap:8px 30px;border-bottom:1px solid var(--line);margin:0 0 36px}.section-tabs a{display:inline-flex;align-items:center;padding:12px 0;min-height:52px;font-size:1rem;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}.section-tabs a:hover{color:var(--accent-dark)}.section-tabs a[aria-current]{color:var(--accent-dark);border-color:var(--accent);font-weight:600}
.button{min-height:48px;padding:12px 22px;gap:16px;border:1px solid var(--ink);border-radius:8px;background:var(--ink);color:#fff;font-size:1rem;font-weight:600;transition:background .18s,border-color .18s,box-shadow .18s}.button:hover{background:var(--accent-dark);border-color:var(--accent-dark);box-shadow:0 5px 14px #142f3f12}.button.light{color:var(--ink);background:var(--surface);border-color:#b7c5cc}.button.light:hover{background:#edf2f3;border-color:#79949f}.button:disabled{opacity:.45;box-shadow:none}.actions{gap:16px 24px;align-items:center}
.meta{font-size:.8125rem;color:var(--muted)}.text-link,.source-link{color:var(--accent-dark);border-bottom:1px solid #b43d3240;text-underline-offset:4px}.text-link{font-size:.9375rem}.text-link:hover,.source-link:hover{border-color:var(--accent)}.source-links{display:block;margin:18px 0;color:var(--muted);font-size:.875rem}.source-link{font-size:.875rem;display:inline-block;padding:4px 0}.source-links a{margin-left:8px}
.content-fold{margin-top:28px;padding:0;border-block:1px solid var(--line)}.content-fold+.content-fold{margin-top:-1px}.content-fold>summary{padding:18px 0;min-height:56px;display:flex;justify-content:space-between;gap:20px;align-items:center;list-style:none;cursor:pointer;font-size:1rem;color:var(--ink)}.content-fold>summary::-webkit-details-marker{display:none}.content-fold>summary::after{content:'+';font-size:1.5rem;color:var(--accent);flex-shrink:0}.content-fold[open]>summary::after{content:'−'}.content-fold-body{padding:10px 0 26px}.content-fold-body p{font-size:1rem}.content-fold-body .meta{font-size:.8125rem}
.exhibit-overview,.experience-single{display:grid;grid-template-columns:1.05fr 1fr;background:#edf2f2;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.exhibit-overview>img,.experience-single-visual>img{display:block;width:100%;height:360px;object-fit:cover}.exhibit-overview>div,.experience-single-copy{padding:36px 40px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;min-width:0}.exhibit-overview h2,.experience-single-copy h2{font-size:clamp(1.5rem,2.2vw,2rem);margin:0 0 18px}.exhibit-overview p,.experience-single-copy p{font-size:1rem}.exhibit-overview .meta{font-size:.8125rem;margin:20px 0 0}.exhibit-entry-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px}.exhibit-entry-actions .text-link{min-height:44px;display:inline-flex;align-items:center}
.exhibition-topics{margin-top:42px}.exhibition-topics-heading{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:22px}.exhibition-topics h2{font-size:1.5rem;margin:0}.exhibition-topics-heading p{margin:0;font-size:.875rem}.topic-directory{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.topic-directory>a{display:block;overflow:hidden;border:1px solid var(--line);border-radius:10px;background:#fff;transition:transform .18s,border-color .18s,box-shadow .18s}.topic-directory a:hover{transform:translateY(-4px);border-color:#87a0a8;box-shadow:0 12px 24px #142f3f10}.topic-directory img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line)}.topic-directory a>div{padding:16px 18px}.topic-directory a>div>span{color:var(--accent-dark);font-size:.75rem}.topic-directory h3{font-size:1rem;line-height:1.7;margin:7px 0 12px}.topic-directory p{font-size:.75rem;margin:0;display:flex;justify-content:space-between;gap:8px}.topic-directory p>span{color:var(--accent-dark)}
.gallery-layout{display:flex;flex-direction:column;align-items:stretch;gap:0}.gallery-layout>div{min-width:0}.exhibit{border-radius:10px;padding:0;background:var(--ink);border:1px solid var(--line);overflow:hidden}.exhibit img{display:block;width:100%;height:auto;aspect-ratio:16/9}.board-menu{display:flex;flex-direction:row;align-items:stretch;gap:12px;overflow-x:auto;scroll-snap-type:x proximity;padding:0 0 14px;margin-bottom:24px}.gallery-layout>.board-menu{order:-1}.board-menu button{display:block;min-width:0;width:190px;flex:0 0 190px;scroll-snap-align:start;padding:0;overflow:hidden;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:8px;text-align:left;transition:border-color .18s,background .18s}.board-menu button img{display:block;width:100%;height:auto;aspect-ratio:16/9}.board-menu-label{display:block;padding:9px 12px}.board-menu-label>span{display:block;margin:0;color:var(--muted);font-size:.6875rem}.board-menu-label>strong{display:block;margin-top:2px;font-size:.8125rem;font-weight:500;line-height:1.6}.board-menu button:hover{border-color:#8fa7b2}.board-menu button.active{background:var(--ink);border-color:var(--ink);color:#fff}.board-menu button.active .board-menu-label>span{color:#c4d7df}.gallery-actions{gap:10px;justify-content:flex-end;margin-top:16px}.gallery-actions .button{padding:10px 14px;min-height:44px;font-size:.875rem}.gallery-actions .meta{margin-right:auto}.board-intro{margin:0 0 22px}.board-intro h2{font-size:clamp(1.4rem,2.4vw,2rem);margin:6px 0 10px;line-height:1.5}.board-intro p{margin:0;font-size:1rem;max-width:950px}.board-discussion{padding:24px 28px;margin-top:26px;background:#edf2f2;border-radius:10px}.board-discussion h3{font-size:1.125rem;margin:4px 0 16px}.board-choice-buttons{display:flex;flex-wrap:wrap;gap:10px}.board-choice-buttons button{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:48px;padding:11px 18px;border:1px solid #bacbd0;border-radius:7px;background:#fff;color:var(--ink);font-size:.875rem;text-align:left}.board-choice-buttons button:hover,.board-choice-buttons button[aria-pressed=true]{border-color:var(--teal);background:#e4efed}.board-choice-buttons button>span{color:var(--teal)}.board-feedback{margin:18px 0 0;padding-top:16px;border-top:1px solid #c8d6d6;color:var(--ink);font-size:.9375rem}.gallery-text{padding:16px 0 24px;border:0;margin:0}.gallery-text h2{font-size:1.5rem}.gallery-text p{font-size:1rem}.gallery-text .meta{font-size:.8125rem}
.tech-layout{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:36px}.diagram{padding:32px;border-radius:var(--radius);background:var(--ink)}.diagram-caption{color:#c3d7de;font-size:.8125rem;letter-spacing:.04em}.diagram h3{color:#fff;font-size:1.75rem;margin:20px 0}.diagram small{color:#c3d7de;font-size:.875rem}.diagram-flow{margin:24px 0;gap:10px}.diagram-flow button{background:#ffffff08;border-color:#587583;color:#fff;border-radius:8px;padding:14px 16px;min-height:50px;font-size:.9375rem}.diagram-flow button:hover{border-color:#c3d7de}.diagram-flow button.active{background:#e5f3f1;color:var(--ink);border-color:#e5f3f1}
#tech-detail{padding:28px 32px;min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}#tech-detail h2{font-size:1.625rem;line-height:1.5}.device-takeaway{color:var(--teal);font-size:1.375rem;font-weight:600;padding-bottom:20px;border-bottom:1px solid var(--line)}.notice{background:#edf3f4;color:#405e6c;font-size:.9375rem;padding:18px 22px;border-left:3px solid var(--teal);border-radius:0 8px 8px 0}.definition{border-color:var(--line);padding:26px 0}.definition h3{font-size:1.5rem}.definition p{font-size:1rem}.split{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px}
.portrait-type{background:var(--ink);border-radius:var(--radius);color:#fff;padding:40px;min-height:300px}.portrait-type strong{font-size:4rem;font-weight:600;letter-spacing:.16em}.portrait-type span{font-family:inherit;color:#cadde3;font-size:1.25rem;letter-spacing:.06em}.portrait-type p{color:#cadde3;font-size:1rem}.timeline{margin:0}.time-row{grid-template-columns:140px minmax(0,1fr);border-color:var(--line);gap:24px;padding:28px 0}.time-row time{font:600 1rem/1.8 var(--sans);color:var(--accent-dark)}.time-row h3{font-size:1.375rem}.time-row p{font-size:1rem}.story-grid{gap:20px;margin-top:0}.story{background:var(--surface);border-color:var(--line);border-radius:var(--radius);padding:24px}.story summary{min-height:44px;align-items:center}.story summary::-webkit-details-marker{display:none}.story summary span{color:var(--accent-dark);font-size:.8125rem}.story h3{font-size:1.125rem;line-height:1.65}.story p{font-size:1rem}.case-question{padding:14px 16px;margin:20px 0;background:#edf3f4;border-left:3px solid var(--teal);color:#405e6c;font-size:.9375rem}
.experience-single-visual{min-width:0}.experience-single-copy p{margin-bottom:24px}.experience-role-diagram{display:flex;flex-direction:column;justify-content:center;gap:16px;padding:32px;background:#e4edef}.experience-role{display:flex;align-items:center;gap:24px;padding:18px 20px;border:1px solid #b8ccd3;border-radius:8px;background:#ffffff70}.experience-role strong{min-width:90px;font-size:1.5rem;font-weight:600;color:var(--ink)}.experience-role span{font-size:1rem;color:#405e6c}.experience-notes{margin-top:30px;padding-top:18px;border-top:1px solid var(--line)}.experience-notes summary{min-height:44px;cursor:pointer;color:var(--muted);font-size:.9375rem}.experience-notes p{font-size:1rem;max-width:880px;margin-top:16px}.experience-page[data-running='true'] .experience-notes{display:none}
.frame-top{align-items:center;margin-top:12px}.frame-top h2{font-size:1.5rem;margin:0}.frame-tools{display:flex;flex-wrap:wrap;gap:10px}.frame-tools .button{font-size:.875rem}.frame-wrap{border-color:#b8ccd3;border-radius:var(--radius);overflow:hidden;height:75vh;min-height:460px}.frame-wrap:fullscreen{height:100dvh;width:100vw;margin:0;border:0;border-radius:0}.experience-loading{color:var(--teal);font-size:.9375rem;margin:18px 0 -10px}#experience-stage,#drive,#sandbox,#xiaotie{scroll-margin-top:115px}
.experience-chat-single{max-width:960px;margin:auto}.experience-chat-single .xt-guide>.eyebrow{display:none}.xt-card{background:var(--surface);border-color:var(--line);border-radius:var(--radius);box-shadow:0 10px 32px #142f3f06}.xt-header{background:var(--ink)}.xt-header h3{font:600 1.375rem/1.5 var(--sans)}.xt-header h3 span,.xt-header p{font-size:.8125rem;color:#d2e3e9}.xt-header i{display:none}.xt-avatar{background:#edf3f4;border-radius:12px}.xt-reset{font-size:.875rem;min-height:44px;border-color:#809ba8;color:#fff}.xt-reset:hover{background:#315568}.xt-toolbar{border-color:var(--line)}.xt-toolbar>span,.xt-input-label{font-size:.875rem;color:var(--muted)}.xt-modes{background:#edf3f4}.xt-modes button{font-size:.875rem;min-height:44px;color:var(--muted)}.xt-modes button[aria-pressed=true]{color:var(--teal);background:var(--surface)}
.xt-messages{height:420px;padding:24px;scrollbar-color:#b9cbd1 transparent}.xt-speaker,.xt-follow-label{font-size:.8125rem;color:var(--muted)}.xt-text{font-size:1rem;line-height:1.85}.xt-bubble{background:#f0f5f6;color:var(--ink);border-color:#dce7eb}.xt-user .xt-bubble{background:var(--ink);border-color:var(--ink);color:#fff}.xt-sources,.xt-related{border-color:#c8dbe2;font-size:.875rem}.xt-sources summary{min-height:36px;color:#08666b}.xt-sources a,.xt-related a{color:#08666b;font-size:.875rem}.xt-sources a span{font-size:.8125rem;color:var(--muted)}.xt-suggestions button{min-height:44px;padding:10px 14px;font-size:.875rem;background:#fff;color:var(--ink);border-color:#bcced5}.xt-suggestions button:hover{background:#edf3f4;border-color:#719aa8}.xt-suggestions button span{color:var(--teal)}.xt-form{background:#f6f8f9;border-color:var(--line)}.xt-compose input{font-size:1rem;color:var(--ink);min-height:48px;border-color:#abc2cc;padding:12px}.xt-compose button{font-size:.9375rem;min-height:48px;color:#fff;background:var(--accent-dark)}.xt-compose button:hover{background:var(--ink)}.xt-input-note{font-size:.8125rem;color:var(--muted)}.xt-categories{gap:24px;border-color:var(--line)}.xt-categories button{min-height:44px;font-size:.875rem;color:var(--muted)}.xt-categories button[aria-pressed=true]{color:var(--teal);border-color:var(--teal)}.xt-boundary{font-size:.875rem;color:var(--muted)}.xt-boundary a{color:var(--accent-dark)}
.session-plan{padding:30px;background:var(--surface);border-color:var(--line);border-radius:var(--radius)}.session-plan h3,.learning-intro h2{font-size:1.5rem}.status{padding:6px 12px;font-size:.875rem;color:#405e6c;background:#e9f1f3;border-radius:6px}.plan-row{grid-template-columns:116px minmax(0,1fr);border-color:var(--line)}.plan-row strong{font-size:.875rem;color:var(--accent-dark)}.plan-row b,.plan-row p{font-size:1rem}.answer-form{gap:24px}.answer-form label{font-size:1rem}.answer-form select{display:block;margin-top:10px;min-height:48px;width:min(340px,100%);padding:10px 14px;border:1px solid #abc2cc;border-radius:8px;background:#fff;color:var(--ink);font-size:1rem}.quiz-result{color:var(--ink);font-size:1rem}.quiz-result:empty{display:none}.quiz-result strong{color:var(--teal)}
.library-search{display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;font-size:.9375rem;color:var(--ink);margin-bottom:14px}.library-search input{width:min(520px,100%);min-width:0;min-height:50px;padding:12px 16px;font-size:1rem;background:var(--surface);color:var(--ink);border:1px solid #abc2cc;border-radius:8px}.documents{gap:22px;margin-top:28px}.doc-item{padding:28px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);min-width:0;transition:border-color .18s,box-shadow .18s}.doc-item:hover{border-color:#a3bac5;box-shadow:0 8px 24px #142f3f06}.doc-index{display:block;color:var(--teal);font-size:.8125rem;letter-spacing:.02em;margin-bottom:14px}.doc-item h2{font-size:1.375rem;line-height:1.65;margin-bottom:16px}.doc-item p{font-size:1rem}.doc-item :is(a,button){display:inline-flex;align-items:center;min-height:44px;color:var(--accent-dark);font-size:.9375rem;margin-right:20px;border-color:#b43d3240}.library-utilities{display:flex;flex-wrap:wrap;gap:16px 30px;padding-top:24px;margin-top:28px;border-top:1px solid var(--line);font-size:.9375rem}.library-utilities a{min-height:44px;display:inline-flex;align-items:center}
/* The reading shelf is scoped to the documents route; sources keep their own layout. */
.library-page.shell{padding-top:32px;padding-bottom:54px}
.library-page .pagehead{margin-bottom:18px}
.library-page .pagehead .eyebrow{font-size:.8125rem;margin-bottom:8px}
.library-page .pagehead h1{font-size:clamp(1.875rem,2.65vw,2.5rem);line-height:1.45;margin-bottom:10px}
.library-page .pagehead p{font-size:.9375rem;line-height:1.8;max-width:760px}
.library-page .section-tabs{margin-bottom:22px}
.library-page .section-tabs a{font-size:.9375rem;min-height:46px;padding-block:10px}
.library-page .library-toolbar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 24px;margin:0 0 16px}
.library-page #doc-count{margin:0;color:var(--muted);font-size:.8125rem;font-variant-numeric:tabular-nums}
.library-page .library-search{display:flex;align-items:center;gap:10px;margin:0;font-size:.875rem;min-width:0}
.library-page .library-search>span{white-space:nowrap}
.library-page .library-search input{width:330px;max-width:100%;min-width:0;min-height:44px;font-size:.875rem;line-height:1.5;padding:9px 12px;border:1px solid #b5c8d0;border-radius:8px;margin:0;background:#fff;transition:border-color .18s,box-shadow .18s}
.library-page .library-search input:hover{border-color:#7897a4}
.library-page .documents{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;gap:18px;margin:0}
.library-page .doc-item{--cover-bg:#142f3f;--cover-ink:#fff;--cover-soft:#d5e4ea;display:flex;flex-direction:column;min-width:0;padding:0;border:1px solid #d2dde1;border-radius:11px;background:#fff;overflow:hidden;box-shadow:0 2px 8px #142f3f03;transition:transform .18s,border-color .18s,box-shadow .18s}
.library-page .doc-item[data-doc='1']{--cover-bg:#087d83;--cover-ink:#fff;--cover-soft:#e2f3f2}
.library-page .doc-item[data-doc='2']{--cover-bg:#f0eee6;--cover-ink:#142f3f;--cover-soft:#58686e}
.library-page .doc-item[data-doc='3']{--cover-bg:#e2edf1;--cover-ink:#142f3f;--cover-soft:#486570}
.library-page .doc-item[data-doc='4']{--cover-bg:#b43d32;--cover-ink:#fff;--cover-soft:#ffebe7}
.library-page .doc-item[data-doc='5']{--cover-bg:#79352e;--cover-ink:#fff;--cover-soft:#f2deda}
.library-page .doc-cover{display:grid;grid-template-columns:minmax(0,1fr) 82px;grid-template-rows:auto auto auto;gap:6px 12px;align-content:start;min-height:126px;padding:14px 16px;background:var(--cover-bg);color:var(--cover-ink);border-bottom:1px solid #142f3f0a}
.library-page .doc-cover-top{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;gap:10px;min-width:0}
.library-page .doc-cover .doc-index{display:block;color:var(--cover-soft);font-size:.75rem;line-height:1.5;letter-spacing:.025em;margin:0;min-width:0}
.library-page .doc-number{color:var(--cover-soft);font-size:.75rem;line-height:1.5;letter-spacing:.08em;font-variant-numeric:tabular-nums;flex-shrink:0}
.library-page .doc-item .doc-hook{grid-column:1;grid-row:2;align-self:center;font-size:1.125rem;line-height:1.4;letter-spacing:0;color:var(--cover-ink);font-weight:600;margin:0;min-width:0;overflow-wrap:anywhere}
.library-page .doc-cover-detail{display:contents}
.library-page .doc-cover-detail>span{grid-column:1/-1;grid-row:3;font-size:.75rem;line-height:1.5;color:var(--cover-soft);overflow-wrap:anywhere}
.library-page .doc-cover-detail svg{grid-column:2;grid-row:2;align-self:center;justify-self:end;display:block;width:82px;max-width:100%;height:48px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;color:var(--cover-soft);pointer-events:none}
.library-page .doc-body{display:flex;flex-direction:column;flex:1;min-width:0;padding:16px}
.library-page .doc-item .doc-title{margin:0;color:var(--ink);font-size:.9375rem;font-weight:600;line-height:1.6;overflow-wrap:anywhere}
.library-page .doc-item .doc-teaser{margin:6px 0 0;color:var(--muted);font-size:.875rem;line-height:1.75;overflow-wrap:anywhere}
.library-page .doc-topics{display:flex;flex-wrap:wrap;gap:5px;margin:10px 0 0;padding:0;list-style:none}
.library-page .doc-topics li{font-size:.75rem;line-height:1.5;color:#47616e;background:#edf3f4;border:1px solid #e2eaed;padding:2px 7px;border-radius:4px;overflow-wrap:anywhere}
.library-page .doc-item .doc-use{font-size:.75rem;line-height:1.7;color:var(--muted);margin:8px 0 0;overflow-wrap:anywhere}
.library-page .doc-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;margin-top:auto;padding-top:14px}
.library-page .doc-item .doc-read{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:44px;margin:0;padding:9px 14px;border:1px solid var(--ink);border-radius:7px;background:var(--ink);color:#fff;font:600 .875rem/1.5 var(--sans);cursor:pointer;transition:background .18s,border-color .18s}
.library-page .doc-item .doc-read:hover{background:var(--accent-dark);border-color:var(--accent-dark)}
.library-page .doc-read-arrow{display:inline-block;transition:transform .18s}
.library-page .doc-item .doc-download{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;margin:0;padding:8px 4px;color:#566d78;border:0;background:transparent;font-size:.8125rem;font-weight:400;line-height:1.5;text-decoration:none}
.library-page .doc-item .doc-download:hover{color:var(--accent-dark);text-decoration:underline;text-underline-offset:4px}
.library-page .library-utilities{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:22px;padding-top:16px;border-top:1px solid var(--line);font-size:.875rem}
.library-page .library-utilities a{display:inline-flex;align-items:center;min-height:44px;color:var(--accent-dark)}
.library-page .doc-empty{padding:28px 24px;text-align:center;border:1px dashed #b7cad2;border-radius:10px;background:#eef3f4;margin-top:4px}
.library-page .doc-empty h2{font-size:1.25rem;margin:0 0 8px;line-height:1.5}
.library-page .doc-empty p{font-size:.9375rem;margin:0 0 18px;line-height:1.8}
.library-page #doc-reset{min-height:44px;font-size:.875rem;padding:10px 16px}
@media(hover:hover){.library-page .doc-item:hover{transform:translateY(-2px);border-color:#9db4c0;box-shadow:0 6px 18px #142f3f0b}.library-page .doc-read:hover .doc-read-arrow{transform:translateX(2px)}}
@media(max-width:1100px){.library-page .documents{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.library-page.shell{padding-top:26px;padding-bottom:44px}.library-page .pagehead h1{font-size:1.875rem}.library-page .pagehead p{font-size:.9375rem}.library-page .section-tabs{margin-bottom:18px}.library-page .library-toolbar{align-items:stretch;gap:10px;margin-bottom:14px}.library-page #doc-count{width:100%}.library-page .library-search{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;width:100%}.library-page .library-search input{width:100%;margin:0}.library-page .documents{grid-template-columns:minmax(0,1fr);gap:14px}.library-page .doc-cover{grid-template-columns:minmax(0,1fr) 72px}.library-page .doc-cover-detail svg{width:72px;height:43px}.library-page .doc-body{padding:15px 16px}.library-page .library-utilities{margin-top:18px}.library-page .doc-empty{padding:24px 18px}}
@media(max-width:380px){.library-page .library-search{grid-template-columns:minmax(0,1fr);gap:6px}.library-page .doc-cover{grid-template-columns:minmax(0,1fr) 64px;gap:6px 10px}.library-page .doc-cover-detail svg{width:64px;height:38px}}
@media(prefers-reduced-motion:reduce){.library-page .doc-item:hover,.library-page .doc-read:hover .doc-read-arrow{transform:none}}
.source-return{margin-bottom:24px}.source-all{display:inline-block;margin-left:24px;color:var(--accent-dark);font-size:.9375rem;min-height:44px}.source-row{grid-template-columns:64px minmax(0,1fr);gap:24px;padding:30px 0;border-color:var(--line)}.source-row .sid{font:600 1rem/1.8 var(--sans);color:var(--accent-dark)}.source-row h2{font-size:1.375rem;line-height:1.6;margin-bottom:12px}.source-row p{font-size:1rem}
footer{margin:0;color:var(--ink);background:#edf2f2;border-top:1px solid var(--line)}.footer-inner.footer-compact{max-width:1400px;display:flex;align-items:baseline;justify-content:space-between;gap:24px;padding:30px 5vw}.footer-compact strong{font-size:1rem;font-weight:600}.footer-compact :is(summary,a,p){font-size:.875rem;color:var(--muted)}.footer-compact summary{cursor:pointer;min-height:44px}.footer-compact>a{min-height:44px}.footer-compact p{line-height:2;margin-top:12px}
dialog{width:min(1060px,94vw);max-height:90dvh;border:1px solid var(--line);border-radius:14px;color:var(--ink);background:var(--paper);box-shadow:0 24px 100px #071b2e44}dialog::backdrop{background:#0b243ab8;backdrop-filter:blur(5px)}.reader-toolbar{background:#f8f9f7f5;border-color:var(--line);padding:20px 28px}.reader-toolbar h2{font-size:1.125rem;line-height:1.6}.reader-toolbar button{font-size:.875rem;min-height:44px}#reader-body{padding:32px clamp(24px,5vw,64px) 48px}#reader-body p{font-size:1rem;line-height:2;color:#3e5562}#reader-body :is(h2,h3,h4){color:var(--ink);scroll-margin-top:110px;margin:32px 0 18px}#reader-body h2{font-size:1.75rem}#reader-body h3{font-size:1.375rem}#reader-body h4{font-size:1.125rem}#reader-body .reader-summary{background:#eaf2f4;padding:20px 24px;border-left:3px solid var(--teal);border-radius:0 8px 8px 0}#reader-body table{font-size:.875rem}#reader-body :is(th,td){text-align:left;padding:12px;border:1px solid #c6d7df}#reader-body th{background:#eaf2f4}.reader-toc{padding:16px 0;border-block:1px solid var(--line);margin:24px 0}.reader-toc summary{min-height:44px;cursor:pointer;font-size:1rem}.reader-toc nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 24px;max-height:300px;overflow:auto;margin-top:16px}.reader-toc a{color:#08666b;font-size:.9375rem;padding:6px 0}.reader-toc a:hover{text-decoration:underline}
/* Entrance and film share the same theme; no route-specific global overrides. */
.welcome-wrap{max-width:1440px;margin-inline:auto;padding-inline:5vw}.welcome-hero{padding-block:46px 40px}.welcome-hero-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:7vw}.welcome-copy{padding-block:16px 32px}.welcome-kicker{font-size:.9375rem;color:var(--muted);margin-bottom:28px;display:flex;align-items:center;gap:14px}.welcome-kicker::before{content:'';width:26px;height:2px;background:var(--accent)}.welcome-copy h1{font-size:clamp(4.5rem,7.5vw,7rem);line-height:1.16;margin:0 0 30px;letter-spacing:-.045em}.welcome-copy h1 span{color:var(--accent)}.welcome-copy>p{font-size:1.125rem;line-height:1.9;margin-bottom:32px}.welcome-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px 24px}.welcome-primary{display:inline-flex;align-items:center;gap:32px;min-height:54px;padding:14px 24px;border-radius:30px;background:var(--ink);color:#fff;font-size:1rem;font-weight:600;transition:background .2s,box-shadow .2s}.welcome-primary:hover{background:var(--accent-dark);box-shadow:0 6px 20px #142f3f16}.welcome-film{display:inline-flex;align-items:center;gap:12px;min-height:48px;color:var(--accent-dark);font-size:1rem}.welcome-film:hover{color:var(--ink)}.welcome-arrow{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;flex-shrink:0}
.welcome-art{position:relative;margin:0;min-width:0;padding-top:12px}.welcome-art::before{content:'';position:absolute;left:20px;right:-16px;top:0;height:calc(100% - 38px);border:1px solid #b43d3265;border-radius:320px 320px 8px 8px;pointer-events:none}.welcome-picture{overflow:hidden;height:clamp(440px,40vw,560px);position:relative;border-radius:320px 320px 8px 8px;background:var(--ink)}.welcome-picture::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 65%,#071b2e35);pointer-events:none}.welcome-visual{width:100%;height:100%;display:block;object-fit:cover;object-position:82% center}.welcome-art figcaption{padding-top:12px;display:flex;justify-content:flex-end;font-size:.8125rem;color:var(--muted)}.welcome-art figcaption a{border-bottom:1px solid var(--line)}.welcome-art figcaption a:hover{color:var(--accent-dark);border-color:var(--accent)}.welcome-caption{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-top:32px;margin-top:10px;font-size:.875rem;color:var(--muted)}.welcome-caption span:last-child{display:flex;align-items:center;gap:18px}.welcome-caption span:last-child::before{content:'';width:50px;height:1px;background:#9daeb7}
.welcome-explore{padding-block:48px 72px;border-top:1px solid var(--line)}.welcome-section-head{display:flex;align-items:baseline;margin-bottom:30px;gap:24px}.welcome-section-head h2{font-size:1.75rem;margin:0}.welcome-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.welcome-card{min-width:0}.welcome-card-image{width:100%;height:230px;overflow:hidden;border-radius:var(--radius);background:#e4edef}.welcome-card-image img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.65,.3,1)}.welcome-card-copy{display:flex;justify-content:space-between;align-items:center;gap:18px;padding-top:22px}.welcome-card h3{font-size:1.5rem;margin:0}.welcome-card-copy .welcome-arrow{color:var(--accent);transition:transform .22s}.welcome-card p{font-size:1rem;margin:10px 0 0}.welcome-card-image--signal{background:#e4edef}.welcome-signal-graphic{display:block;width:100%;height:100%}
.film-screen{max-width:1100px;margin-inline:auto}.film-controls{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:22px}.film-language{display:flex;flex-wrap:wrap;gap:8px;padding:5px;border:1px solid var(--line);border-radius:12px;background:#edf2f2}.film-language button{font:400 1rem/1.5 var(--sans);min-height:46px;padding:10px 18px;color:var(--muted);background:transparent;border:1px solid transparent;border-radius:8px;transition:background .18s,color .18s}.film-language button[aria-pressed=true]{color:#fff;background:var(--ink)}.film-language button:hover{color:var(--accent-dark)}.film-language button[aria-pressed=true]:hover{color:#fff;background:#264b60}.film-runtime{font-size:.875rem;color:var(--muted);white-space:nowrap}.film-player{display:block;width:100%;height:auto;aspect-ratio:16/9;background:#0a1c2c;border-radius:var(--radius);color-scheme:dark;box-shadow:0 12px 36px #142f3f14}.film-caption{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:12px 24px;padding-top:18px}.film-caption p,.film-caption a{margin:0;font-size:.875rem;line-height:1.85}.film-caption p{color:var(--muted)}.film-caption a{color:var(--accent-dark);min-height:44px;display:inline-flex;align-items:center}
@media(hover:hover){.welcome-card:hover .welcome-card-image img{transform:scale(1.035)}.welcome-card:hover .welcome-arrow{transform:translate(2px,-2px)}}
@media(max-width:1100px){.welcome-hero-grid{gap:5vw}.welcome-copy h1{font-size:5rem}.welcome-picture{height:460px}.welcome-card-image{height:200px}}
@media(max-width:1050px){.header nav{gap:24px}.gallery-layout{grid-template-columns:minmax(0,1fr)}.topic-directory{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:900px){.header{min-height:80px}.menu{display:block}.header nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:18px 5vw;max-height:calc(100dvh - 80px);overflow:auto;box-shadow:0 16px 28px #142f3f14}.header nav.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 24px}.header nav a{font-size:1rem;min-height:48px}.exhibit-overview>div,.experience-single-copy{padding:28px}.welcome-copy h1{font-size:4.5rem}.welcome-picture{height:430px}.welcome-card-grid{gap:22px}.welcome-card-image{height:180px}}
@media(max-width:700px){
 html{scroll-padding-top:100px}.header{padding-inline:24px;gap:12px}.brand{font-size:1.25rem;gap:10px}.brand img{width:32px;height:32px}.shell{padding:32px 24px 48px}.pagehead{margin-bottom:24px}.pagehead h1{font-size:2rem}.section-tabs{gap:0 20px;margin-bottom:28px}.section-tabs a{font-size:.9375rem}.section-tabs[aria-label='主题展览阅读方向']{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
 .exhibit-overview,.experience-single,.tech-layout,.split{grid-template-columns:minmax(0,1fr);gap:24px}.exhibit-overview,.experience-single{gap:0}.exhibit-overview>img,.experience-single-visual>img{height:240px}.exhibit-overview>div,.experience-single-copy{padding:26px}.topic-directory{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-directory a>div{padding:12px}.topic-directory h3{font-size:.875rem}.exhibition-topics-heading{display:block}.exhibition-topics-heading p{margin-top:8px}.board-menu button{flex-basis:160px}.board-discussion{padding:20px}.board-choice-buttons button{width:100%}.gallery-layout>.board-menu{grid-row:1}.gallery-actions{display:grid;grid-template-columns:1fr 1fr}.gallery-actions .meta{text-align:center}.gallery-text>p strong{display:block}.diagram,#tech-detail{padding:26px}.diagram h3{font-size:1.5rem}.portrait-type{min-height:260px;padding:32px}.time-row{grid-template-columns:minmax(0,1fr);gap:8px}.story-grid{grid-template-columns:minmax(0,1fr)}.story{padding:20px}.content-fold-body .split{gap:0}
 .experience-role-diagram{padding:24px}.experience-role{padding:16px;gap:16px}.experience-role strong{min-width:76px;font-size:1.25rem}.frame-top{display:block}.frame-top h2{margin-bottom:16px}.frame-tools{gap:8px}.frame-tools .button{padding:10px 14px}.frame-wrap{height:80dvh;min-height:560px}.xt-header{align-items:flex-start;flex-wrap:wrap;gap:16px}.xt-toolbar{align-items:flex-start;flex-wrap:wrap}.xt-messages{height:390px;padding:20px 16px}.xt-message{max-width:98%}.xt-text{font-size:1rem}.xt-categories{flex-wrap:wrap;gap:0 24px}.xt-input-note{flex-wrap:wrap}.session-plan{padding:24px}.plan-row{grid-template-columns:92px minmax(0,1fr);gap:12px}
 .documents{grid-template-columns:minmax(0,1fr)}.doc-item{padding:24px}.library-search{display:block}.library-search input{width:100%;display:block;margin-top:10px}.source-row{grid-template-columns:40px minmax(0,1fr);gap:16px}.source-row h2{font-size:1.25rem}.source-all{display:block;margin:0 0 10px}.footer-inner.footer-compact{display:flex;flex-direction:column;gap:8px;padding:28px 24px}.reader-toolbar{padding:16px;gap:12px;align-items:flex-start}.reader-toolbar h2{font-size:1rem}.reader-toolbar .button{padding:10px 12px}#reader-body{padding:24px}.reader-toc nav{grid-template-columns:minmax(0,1fr)}
 .welcome-wrap{padding-inline:24px}.welcome-hero{padding-block:32px 30px}.welcome-hero-grid{grid-template-columns:minmax(0,1fr);gap:32px}.welcome-copy{padding:0}.welcome-kicker{font-size:.875rem;margin-bottom:22px}.welcome-copy h1{font-size:clamp(3.75rem,15vw,5.5rem);margin-bottom:22px}.welcome-copy>p{font-size:1rem;margin-bottom:24px}.welcome-actions{gap:12px 18px}.welcome-art{margin-left:12%}.welcome-art::before{right:-10px;left:14px}.welcome-picture{height:360px}.welcome-caption{align-items:flex-start;padding-top:26px;margin:0;font-size:.8125rem}.welcome-caption span:first-child{max-width:210px}.welcome-caption span:last-child{white-space:nowrap}.welcome-caption span:last-child::before{width:20px}.welcome-explore{padding-block:34px 48px}.welcome-section-head h2{font-size:1.5rem}.welcome-card-grid{grid-template-columns:minmax(0,1fr);gap:32px}.welcome-card-image{height:240px}.welcome-card-copy{padding-top:18px}.film-controls{gap:14px;margin-bottom:18px}.film-language button{padding-inline:14px;font-size:.9375rem}.film-caption{display:block}.film-caption a{margin-top:8px}
}
@media(max-width:380px){.header,.shell{padding-inline:18px}.brand{font-size:1.125rem;gap:8px}.brand img{width:28px;height:28px}.menu{padding-inline:10px}.pagehead h1{font-size:1.875rem}.xt-identity{gap:10px}.xt-compose{flex-wrap:wrap}.xt-compose input{flex-basis:100%}.xt-compose button{margin-left:auto}.experience-role{flex-wrap:wrap;gap:4px 16px}.plan-row{grid-template-columns:minmax(0,1fr);gap:4px}.welcome-wrap{padding-inline:18px}.welcome-picture{height:310px}.welcome-caption{gap:12px}.welcome-caption span:last-child::before{display:none}.welcome-card-image{height:210px}.film-language{width:100%;gap:4px}.film-language button{flex:1;padding-inline:8px}}
/* Long source names and enlarged text must reflow inside their reading columns. */
.library-page .doc-item{cursor:pointer}
#main p,.source-row h2,.source-row a,.doc-item h2{overflow-wrap:anywhere}
.brand{min-width:0;flex-shrink:1}.brand img,.menu{flex-shrink:0}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.welcome-card:hover .welcome-card-image img,.welcome-card:hover .welcome-arrow{transform:none}}

@media(max-width:400px){.topic-directory{grid-template-columns:minmax(0,1fr)}.topic-directory>a{display:grid;grid-template-columns:40% minmax(0,1fr);align-items:center}.topic-directory img{border-bottom:0;height:100%;object-fit:cover}.topic-directory h3{margin-bottom:6px}.board-menu button{flex-basis:150px}}
@media(max-width:680px){.section-tabs[aria-label="主题展览阅读方向"]{display:flex;flex-wrap:nowrap;gap:24px;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;padding-bottom:0}.section-tabs[aria-label="主题展览阅读方向"] a{flex-shrink:0;white-space:nowrap;min-height:48px;padding-block:10px}}
.board-menu{overflow-y:hidden;scrollbar-width:thin}

/* 04. museum-refined.css */
/* Railway exhibition. October 7: spatial entrance and one continuous exhibit narrative. */
:root {
  --ink: #132b36;
  --muted: #59666a;
  --paper: #f6f5f0;
  --surface: #fff;
  --line: #cdd2ce;
  --accent: #805b38;
  --accent-dark: #664328;
  --teal: #246a6c;
  --radius: 4px;
  --serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', SimSun, serif;
}
html { scroll-padding-top: 96px; }
body { background: var(--paper); line-height: 1.8; }
h1, h2, h3, h4 { letter-spacing: -.035em; }
img { max-width: 100%; }
a { text-decoration: none; }
.header {
  min-height: 82px;
  padding: 14px max(4.4vw,24px);
  background: var(--paper);
  backdrop-filter: none;
  border-bottom: 1px solid var(--line);
}
.brand { font-size: 1.25rem; letter-spacing: -.04em; }
.brand img { width: 34px; height: 34px; border-radius: 3px; }
.brand small { display: block; margin-top: 1px; font-size: .75rem; font-weight: 400; letter-spacing: .12em; color: var(--muted); }
.header nav { gap: 34px; }
.header nav a { font-size: .9375rem; }
.menu { border-radius: 3px; background: transparent; }
.shell { max-width: 1480px; padding: 38px max(4.4vw,24px) 64px; }
.pagehead { margin-bottom: 22px; }
.pagehead .eyebrow { margin-bottom: 8px; font-size: .875rem; }
.pagehead h1 { font-family: var(--serif); font-size: clamp(2rem,3.2vw,3rem); line-height: 1.35; margin-bottom: 12px; letter-spacing: -.03em; }
.pagehead p { max-width: 760px; }
.section-tabs { margin-bottom: 26px; gap: 30px; }
.section-tabs a { min-height: 48px; font-size: .9375rem; padding-block: 10px; }
.eyebrow, .meta { font-size: .875rem; }
.button { border-radius: 3px; padding: 11px 20px; font-weight: 500; min-height: 46px; }
.button:hover { box-shadow: none; background: var(--accent-dark); }
.button.light { background: transparent; border-color: #adb7b6; }
.button.light:hover { background: #e8ece8; }
.text-link { font-size: .9375rem; min-height: 36px; padding-block: 5px; display: inline-flex; align-items: center; }
button.text-link { background: transparent; border: 0; border-bottom: 1px solid #ad3e3050; border-radius: 0; cursor: pointer; font-weight: 400; }
.source-link, .source-links { font-size: .875rem; }
.notice { border-radius: 3px; border-left: 3px solid var(--teal); background: #e9eeeb; color: var(--muted); font-size: .9375rem; }
.editorial-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 26px; }
.editorial-heading .eyebrow { display: block; margin-bottom: 6px; }
.editorial-heading h2 { margin: 0; font-size: 1.75rem; line-height: 1.5; }
.editorial-heading p { margin: 0 0 4px; font-size: .9375rem; }


/* Exhibition landing and reading. */
.exhibit-overview { grid-template-columns: 1.15fr 1fr; border: 0; border-radius: 0; background: #e8ede9; }
.exhibit-image { position: relative; overflow: hidden; min-width: 0; }
.exhibit-image img { display: block; width: 100%; height: 100%; min-height: 330px; object-fit: cover; }
.exhibit-overview > .exhibit-image { padding: 0; display: block; }
.image-label { position: absolute; bottom: 0; left: 0; background: var(--ink); color: #fff; padding: 7px 14px; font-size: .75rem; }
.exhibit-overview > div:last-child { padding: 30px 36px; }
.exhibit-overview h2 { font-family: var(--serif); font-size: 2rem; line-height: 1.55; margin-block: 8px 14px; }
.exhibit-overview .meta { font-size: .8125rem; }
.exhibition-topics { margin-top: 36px; }
.exhibition-topics-heading h2 { font-size: 1.625rem; }
.topic-directory { grid-template-columns: repeat(4,minmax(0,1fr)); gap: 28px 22px; }
.topic-directory > a { border: 0; background: transparent; border-radius: 0; }
.topic-directory a:hover { transform: none; box-shadow: none; }
.topic-directory a > div { padding: 12px 0 0; }
.topic-directory img { border: 1px solid #d0d7d3; }
.topic-directory h3 { font-size: 1rem; margin-block: 7px 9px; }
.topic-directory a:hover h3 { color: var(--accent); }
.topic-directory a > div > span, .topic-directory p { font-size: .8125rem; }
.gallery-layout > .board-menu { order: 0; margin-top: 0; }
.board-intro h2 { font-size: clamp(1.4rem,2.2vw,1.9rem); }
.board-intro { margin-bottom: 18px; }
.exhibit { border-radius: 0; }
.board-menu button { border-radius: 3px; }
.board-menu-label > span { font-size: .75rem; }
.board-menu-label > strong { font-size: .875rem; }
.board-discussion { border-radius: 0; background: #e8ede9; margin-top: 22px; padding: 24px; }
.board-discussion h3 { font-size: 1.125rem; }
.board-choice-buttons button { border-radius: 3px; font-size: .9375rem; }
.board-feedback { border-radius: 3px; }
.boards-page .pagehead h1 { font: 600 1.2rem/1.6 var(--sans); letter-spacing: 0; margin: 0; }
.boards-page .pagehead .eyebrow, .boards-page .pagehead p { display: none; }
.boards-page .pagehead { margin-bottom: 8px; }
.board-finish { display: flex; flex-wrap: wrap; gap: 14px 24px; border-top: 1px solid var(--line); margin-top: 22px; padding-top: 18px; }
.content-fold { margin-top: 24px; }
.gallery-text { border-radius: 0; }

/* Guided route is a reading aid, not a claimed achievement tracker. */
.visit-bar { max-width: 1480px; margin: 20px auto -12px; padding: 10px max(4.4vw,24px); display: flex; align-items: center; gap: 18px; font-size: .875rem; background: #e5ebe7; color: var(--ink); border-block: 1px solid #ced8d0; }
.visit-bar > a:first-child { color: var(--ink); font-weight: 600; }
.visit-bar > span { color: var(--muted); white-space: nowrap; }
.visit-continue { margin-left: auto; color: var(--accent-dark); padding-block: 4px; }
.visit-bar button { background: none; border: 0; color: var(--muted); font-size: .8125rem; min-height: 36px; cursor: pointer; }
.visit-stations { list-style: none; padding: 0; margin: 32px 0; }
.visit-stations li { display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 30px; border-top: 1px solid var(--line); padding: 25px 0; }
.visit-stations li:last-child { border-bottom: 1px solid var(--line); }
.station-number { font: 2.5rem Georgia,serif; color: var(--accent); }
.visit-stations h2 { font-size: 1.4rem; margin: 0 0 5px; }
.visit-stations p { margin: 0; }
.visit-reflection { margin-top: 28px; background: #e8ede9; padding: 32px; max-width: 900px; }
.visit-reflection h2 { font-size: 1.6rem; margin: 8px 0; }
.visit-reflection .actions { margin-top: 24px; display: flex; flex-wrap: wrap; }
.visit-reflection .meta { margin-top: 20px; }
.visit-home { margin-top: 20px; }

/* Human stories: grounded records first; dates and biographies remain distinct. */
.story-opening { display: grid; grid-template-columns: .32fr 1fr; gap: 54px; background: var(--ink); color: var(--paper); padding: 36px; margin-bottom: 42px; }
.story-opening h2 { font-family: var(--serif); font-size: 1.85rem; line-height: 1.6; margin: 6px 0 16px; color: #fff; }
.story-opening p { color: #dae1df; }
.story-opening .eyebrow { color: #d5b4a6; }
.story-opening .source-links { color: #c4d2ce; }
.story-opening .source-link, .story-opening .text-link { color: #f5ccba; border-color: #d5b4a680; }
.story-date { display: flex; flex-direction: column; border-right: 1px solid #4c6065; gap: 8px; font-size: .875rem; }
.story-date strong { font: 3.5rem/1.5 Georgia,serif; font-weight: 400; }
.story-person { display: grid; grid-template-columns: .55fr 1fr; gap: 54px; align-items: center; padding-bottom: 30px; }
.story-person .portrait-type { background: transparent; border: 0; border-left: 3px solid var(--accent); border-radius: 0; padding: 8px 0 8px 28px; min-height: 0; }
.story-person .portrait-type strong { color: var(--ink); }
.story-person .portrait-type span, .story-person .portrait-type p { color: var(--muted); }
.portrait-type strong { font-family: var(--serif); font-size: 3rem; }
.portrait-type span { font-size: 1.125rem; }
.story-person h2 { font-size: 1.5rem; }
.story-records { margin-top: 18px; }
.timeline { border-radius: 0; }
.time-row { grid-template-columns: 140px 1fr; padding: 22px 0; }
.time-row time { font: 1.3rem/1.7 Georgia,serif; color: var(--accent); }
.time-row h3 { font-size: 1.125rem; }
.time-row p { margin-bottom: 0; }
.time-row .source-links { margin: 8px 0 0; }
.story { border-radius: 0; background: transparent; }

/* Reading resources use editorial rows instead of oversized empty cards. */
.reading-selection { margin-bottom: 30px; border-bottom: 1px solid var(--line); padding-bottom: 28px; }
.reading-selection > h2 { font-size: 1.375rem; margin: 0 0 18px; }
.reading-selection > div { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 28px; }
.reading-selection article { padding-left: 18px; border-left: 2px solid var(--accent); }
.reading-selection p { margin: 8px 0; font-size: .9375rem; }
.reading-selection .text-link { font-size: .875rem; }
.library-toolbar { margin-top: 6px; margin-bottom: 18px; }
.library-page .documents { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 34px; }
.library-page .doc-item { display: grid; grid-template-columns: 116px minmax(0,1fr); padding: 24px 0; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: transparent; gap: 20px; transition: none; }
.library-page .doc-item:hover { box-shadow: none; transform: none; }
.library-page .doc-cover { display: flex; flex-direction: column; gap: 8px; padding: 14px 12px; border-radius: 2px; min-height: 170px; align-self: start; }
.library-page .doc-cover-top { gap: 4px; }
.library-page .doc-cover .doc-index { font-size: .6875rem; }
.library-page .doc-number { display: none; }
.library-page .doc-item .doc-hook { font-family: var(--serif); font-size: 1.35rem; line-height: 1.55; margin-block: 4px 2px; font-weight: 500; }
.library-page .doc-cover-detail { display: flex; flex-direction: column; gap: 6px; }
.library-page .doc-cover-detail > span { font-size: .6875rem; }
.library-page .doc-cover-detail svg { width: 68px; height: 40px; }
.library-page .doc-body { padding: 0; min-width: 0; }
.library-page .doc-item .doc-title { font-size: 1.125rem; font-weight: 600; color: var(--ink); line-height: 1.7; margin: 0 0 9px; }
.doc-teaser { font-size: .9375rem; line-height: 1.8; margin: 0 0 10px; }
.library-page .doc-topics { display: none; }
.doc-use { font-size: .8125rem; margin: 4px 0 10px; }
.doc-actions { margin: 0; gap: 18px; }
.doc-read { padding: 6px 0; color: var(--accent-dark); border-radius: 0; background: none; font-size: .9375rem; font-weight: 500; }
.doc-read:hover { background: none; color: var(--ink); }
.doc-read-arrow { display: none; }
.doc-download { font-size: .875rem; }
.library-search input { border-radius: 3px; background: #fff; min-height: 46px; }
.session-plan { border-radius: 3px; }
.source-row { border-radius: 0; }
.source-row h2 { font-size: 1.35rem; line-height: 1.6; }
.tech-layout { gap: 40px; }
.diagram { border-radius: 0; }
.diagram-caption { font-size: .8125rem; }
.diagram-flow button { border-radius: 3px; }
.diagram h3 { font-family: var(--serif); }
.definition { border-radius: 0; }
.frame-wrap { border-radius: 3px; }
.film-page .pagehead h1 { font-family: var(--serif); }
.film-screen { border-radius: 0; }
.film-language button { border-radius: 3px; }
.footer-inner.footer-compact { max-width: 1480px; padding: 28px max(4.4vw,24px); }
footer { background: #e8ece7; border-top: 1px solid var(--line); }
.footer-inner.footer-compact > strong { font-size: 1rem; }
.footer-inner.footer-compact > a, .footer-inner summary { font-size: .875rem; }
dialog#reader { border-radius: 4px; background: var(--paper); width: min(1020px,94vw); }
.reader-toolbar { border-bottom: 1px solid var(--line); background: var(--paper); }
.reader-toolbar h2 { font-size: 1.125rem; }
#reader-body { padding: 30px 44px 44px; }
.reader-article { max-width: 780px; margin-inline: auto; }
.reader-article h2, .reader-article h3, .reader-article h4 { scroll-margin-top: 95px; font-family: var(--serif); }
.reader-article p { scroll-margin-top: 95px; }
.reader-article p, .reader-summary { font-size: 1rem; line-height: 2; }
.reader-toc { border-radius: 0; background: #e8ede9; }

@media (max-width: 1080px) {
  .topic-directory { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .library-page .documents { gap: 0 24px; }
  .library-page .doc-item { grid-template-columns: 98px minmax(0,1fr); gap: 16px; }
}
@media (max-width: 900px) {
  .header { min-height: 76px; }
  .header nav.open { background: var(--paper); border: 1px solid var(--line); border-radius: 3px; box-shadow: 0 8px 20px #132b3612; }
  .header nav.open a { min-height: 48px; }
  .exhibit-overview h2 { font-size: 1.7rem; }
  .exhibit-overview > div:last-child { padding: 24px; }
  .story-opening { gap: 28px; grid-template-columns: .34fr 1fr; }
  .story-person { gap: 30px; }
}
@media (max-width: 680px) {
  html { scroll-padding-top: 82px; }
  .header { padding: 12px 20px; gap: 16px; }
  .brand { font-size: 1.125rem; }
  .brand img { width: 30px; height: 30px; }
  .brand small { font-size: .6875rem; letter-spacing: .04em; }
  .menu { min-height: 42px; padding: 8px 12px; }
  .shell { padding: 26px 20px 42px; }
  .pagehead { margin-bottom: 18px; }
  .pagehead h1 { font-size: 2rem; line-height: 1.45; margin-bottom: 10px; }
  .pagehead p { font-size: .9375rem; }
  .pagehead .eyebrow { font-size: .8125rem; }
  .experience-page > .pagehead h1 { font: 600 1.125rem/1.6 var(--sans); letter-spacing: 0; margin: 0; }
  .experience-page > .pagehead .eyebrow, .experience-page > .pagehead p { display: none; }
  .experience-page > .pagehead { margin-bottom: 8px; }
  .section-tabs { margin-bottom: 22px; gap: 22px; }
  .section-tabs a { font-size: .875rem; }
  .editorial-heading { gap: 12px; margin-bottom: 18px; align-items: flex-start; }
  .editorial-heading h2 { font-size: 1.375rem; }
  .editorial-heading > p { display: none; }
  .editorial-heading .eyebrow { font-size: .8125rem; }
  .editorial-heading > a { font-size: .8125rem; white-space: nowrap; }
  .exhibit-overview { grid-template-columns: minmax(0,1fr); }
  .exhibit-image img { min-height: 0; height: 230px; }
  .exhibit-overview > div:last-child { padding: 22px; }
  .exhibit-overview h2 { font-size: 1.7rem; margin-block: 4px 12px; }
  .exhibit-overview h2 br { display: none; }
  .exhibit-overview p { font-size: .9375rem; }
  .exhibition-topics-heading { display: block; }
  .exhibition-topics-heading h2 { font-size: 1.375rem; }
  .exhibition-topics-heading p { margin-top: 8px; }
  .topic-directory { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px 16px; }
  .topic-directory > a { display: block; }
  .topic-directory h3 { font-size: .9375rem; }
  .topic-directory a > div > span { font-size: .75rem; }
  .topic-directory p { font-size: .75rem; }
  .board-menu button { flex-basis: 150px; }
  .board-intro h2 { font-size: 1.375rem; }
  .board-intro p { font-size: .9375rem; }
  .boards-page .board-content { display: flex; flex-direction: column; }
  .boards-page .board-intro { order: 1; }
  .boards-page .exhibit { order: 2; }
  .boards-page .gallery-actions { order: 3; }
  .boards-page .board-transcript { order: 4; }
  .boards-page #board-interaction { order: 5; }
  .boards-page .gallery-text { padding: 20px 0; }
  .boards-page .gallery-text h2 { font-size: 1.3rem; }
  .boards-page .gallery-text p { font-size: 1rem; }
  .board-discussion { padding: 20px; }
  .gallery-actions { flex-wrap: wrap; }
  .gallery-actions .button { padding-inline: 10px; font-size: .8125rem; }
  .visit-bar { margin-top: 12px; padding: 10px 20px; flex-wrap: wrap; gap: 4px 14px; }
  .visit-bar > a:first-child { flex-basis: 65%; }
  .visit-continue { margin-left: 0; flex: 1; font-size: .8125rem; }
  .visit-stations li { grid-template-columns: 40px minmax(0,1fr); gap: 10px 18px; padding: 20px 0; }
  .visit-stations li > a { grid-column: 2; justify-self: start; }
  .station-number { font-size: 1.8rem; }
  .visit-stations h2 { font-size: 1.125rem; }
  .visit-stations p { font-size: .9375rem; }
  .visit-reflection { padding: 22px; }
  .visit-reflection h2 { font-size: 1.375rem; }
  .story-opening { grid-template-columns: minmax(0,1fr); padding: 24px; gap: 18px; margin-bottom: 28px; }
  .story-date { flex-direction: row; align-items: baseline; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid #4c6065; padding-bottom: 12px; gap: 12px; }
  .story-date strong { font-size: 1.8rem; }
  .story-opening h2 { font-size: 1.5rem; }
  .story-opening p { font-size: .9375rem; }
  .story-person { grid-template-columns: minmax(0,1fr); gap: 20px; }
  .portrait-type strong { font-size: 2.5rem; }
  .story-person p { font-size: .9375rem; }
  .time-row { grid-template-columns: minmax(0,1fr); gap: 5px; padding-block: 20px; }
  .time-row time { font-size: 1.125rem; }
  .reading-selection > div { grid-template-columns: minmax(0,1fr); gap: 20px; }
  .reading-selection p { margin-block: 3px; }
  .library-page .documents { grid-template-columns: minmax(0,1fr); gap: 0; }
  .library-page .doc-item { grid-template-columns: 88px minmax(0,1fr); gap: 16px; padding-block: 22px; }
  .library-page .doc-cover { min-height: 152px; padding: 12px 9px; }
  .library-page .doc-item .doc-hook { font-size: 1.125rem; }
  .library-page .doc-cover-detail > span { font-size: .625rem; }
  .library-page .doc-item .doc-title { font-size: 1rem; margin-bottom: 7px; }
  .doc-teaser { font-size: .875rem; margin-bottom: 7px; }
  .doc-use { font-size: .75rem; }
  .doc-actions { gap: 14px; flex-wrap: wrap; }
  .doc-read, .doc-download { font-size: .8125rem; min-height: 38px; }
  .library-search input { width: 100%; }
  .footer-inner.footer-compact { padding: 24px 20px; }
  #reader-body { padding: 24px 22px 36px; }
  .reader-toolbar { padding: 14px; }
  .reader-toolbar h2 { font-size: 1rem; }
  .source-row h2 { font-size: 1.125rem; }
}
@media (max-width: 360px) {
  .topic-directory { grid-template-columns: minmax(0,1fr); }
  .topic-directory > a { display: grid; grid-template-columns: 40% minmax(0,1fr); gap: 14px; }
  .topic-directory a > div { padding: 0; }
  .topic-directory img { aspect-ratio: 16/9; height: auto; object-fit: contain; }
  .library-page .doc-item { grid-template-columns: 76px minmax(0,1fr); gap: 12px; }
  .library-page .doc-item .doc-hook { font-size: 1rem; }
  .library-page .doc-cover-detail { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}

/* Spatial exhibition entrance and a continuous three-part visit. */
.header{min-height:76px;padding-block:12px;background:#102a34;border-bottom:1px solid #35505a;color:#f8f7f0}
.header .brand{color:#f8f7f0}.header .brand small{color:#b7c9ca}.header nav a{color:#c5d2d2}.header nav a:hover,.header nav a[aria-current="page"]{color:#fff}.header nav a[aria-current="page"]::after{background:#d9b582}
.header nav .nav-search{display:inline-flex;align-items:center;gap:9px;border-left:1px solid #46616a;padding-left:25px}.header nav .nav-search svg{flex-shrink:0}
.header .menu{color:#f6f6ee;border-color:#55717a;background:transparent}.header nav.open{background:#102a34;border-color:#49646b}.header nav.open a:hover{background:#1c3c47}.header :is(a,button):focus-visible{outline:3px solid #e8c28d;outline-offset:5px}
.pagehead h1{font-family:var(--sans);font-weight:600;letter-spacing:-.04em;font-size:clamp(1.9rem,3vw,2.7rem)}.pagehead{margin-bottom:16px;padding-bottom:8px}.pagehead p{margin-bottom:14px}.section-tabs{margin-bottom:24px}
.museum-hero{position:relative;background:#102a34;color:#f8f7f0;overflow:hidden}
.museum-hero-art{position:absolute;inset:0 0 0 37%;overflow:hidden}.museum-hero-art:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#102a34 0%,#102a342e 36%,#102a3400 62%)}
.museum-hero-art img{width:100%;height:calc(100% + 100px);object-fit:cover;object-position:55% 50%;display:block;transform:translateY(-15px)}
.museum-hero-inner{position:relative;max-width:1480px;margin:auto;min-height:625px;padding:68px max(4.4vw,24px) 76px}
.museum-hero-copy{position:relative;z-index:1;max-width:520px}.museum-kicker{font-size:.8125rem;letter-spacing:.12em;color:#d4ded9;display:flex;align-items:center;gap:12px;margin:0 0 27px}.museum-kicker>span{width:21px;height:2px;background:#ddba89;flex-shrink:0}
.museum-hero h1{font:500 clamp(3.6rem,6.4vw,6.4rem)/1.08 var(--serif);letter-spacing:-.07em;margin:0 0 25px;color:#f8f7f0}.museum-hero h1 em{color:#dfbd8b;font-style:normal}.museum-hero-lead{font-size:1.0625rem;line-height:1.95;color:#d0dcd9;margin:0 0 28px}
.museum-hero .museum-start{display:inline-flex;align-items:center;gap:32px;background:#e0bc88;border-color:#e0bc88;color:#152f38;min-height:52px;font-weight:600;padding:12px 23px}.museum-hero .museum-start:hover{background:#efd0a1;color:#102a34}
.museum-watch{display:flex;width:fit-content;align-items:center;gap:12px;color:#dce6e1;font-size:.875rem;margin-top:19px;padding-block:4px}.museum-watch>span{font-size:1.5rem;line-height:1}.museum-watch:hover{color:#e7c28f}
.museum-enter{position:absolute;right:max(4.4vw,24px);bottom:57px;display:flex;align-items:center;justify-content:space-between;gap:50px;padding:20px 24px;background:#f6f5efeF;color:#17323c;min-width:300px;z-index:1;border:1px solid #ffffff80}.museum-enter span{font-weight:600}.museum-enter small{display:block;font-size:.75rem;font-weight:400;color:#536b6e;margin-top:4px}.museum-enter b{font-size:1.75rem;font-weight:400}.museum-enter:hover{background:#fff;color:#9b5639}
.museum-scene-label{position:absolute;right:max(4.4vw,24px);bottom:23px;color:#e2ecea;background:#102a34c9;padding:3px 8px;font-size:.6875rem;letter-spacing:.05em}
.museum-chapters{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-width:1480px;margin:0 auto;padding:0 max(4.4vw,24px);border-bottom:1px solid var(--line);background:#f0f0e9}
.museum-chapters a{display:grid;grid-template-columns:35px 1fr;gap:3px 15px;padding:25px 32px;color:var(--ink)}.museum-chapters a:first-child{padding-left:0}.museum-chapters a+a{border-left:1px solid var(--line)}.museum-chapters span{grid-row:span 2;color:#9a704b;font-size:.8125rem;padding-top:2px}.museum-chapters strong{font-size:1.0625rem;font-weight:600}.museum-chapters small{font-size:.8125rem;color:var(--muted)}.museum-chapters a:hover strong{color:var(--accent)}
.museum-section{padding-top:64px;padding-bottom:58px}.museum-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:35px;margin-bottom:29px}.museum-section-number{display:block;color:#906445;font-size:.75rem;font-weight:600;letter-spacing:.11em;margin-bottom:14px}.museum-section-head h2{font-size:clamp(1.65rem,2.7vw,2.4rem);font-weight:600;line-height:1.4;margin:0}.museum-section-head>p{color:var(--muted);font-size:.9375rem;line-height:1.85;margin:0;flex-shrink:0}
.museum-signal-layout{grid-template-columns:1.45fr 1fr;gap:0;align-items:stretch;border:1px solid #c6ceca;background:#fff}.museum-signal-layout #tech-detail{padding:35px 36px;display:flex;flex-direction:column;justify-content:center;min-width:0}.museum-signal-layout #tech-detail h2{font-family:var(--sans);font-size:clamp(1.4rem,2vw,1.85rem);line-height:1.6;margin:12px 0 20px}.museum-signal-layout .device-takeaway{border-left:2px solid #bd9768;padding-left:18px;font-size:1.1875rem;line-height:1.7;color:var(--ink);margin:0 0 18px}.museum-signal-layout #tech-detail>p:not(.device-takeaway){font-size:.9375rem;line-height:1.95}.museum-signal-layout .notice{margin-top:24px;font-size:.8125rem;background:#f1f3ee;border-left:0;padding:14px 16px}
.museum-section-foot{display:flex;gap:24px;flex-wrap:wrap;align-items:center;padding-top:21px;font-size:.875rem}.museum-section-foot>span{margin-right:auto;color:var(--muted)}.museum-section-foot>a{color:var(--teal);min-height:36px;display:inline-flex;align-items:center;gap:20px}
.museum-team{background:#e9ede7;border-block:1px solid #d3dbd2}.museum-team-inner{display:grid;grid-template-columns:.82fr 1.18fr;gap:9%;padding-top:64px;padding-bottom:64px;align-items:center}.museum-team-intro h2{font:500 clamp(2.3rem,3.5vw,3.35rem)/1.35 var(--serif);margin:0 0 25px}.museum-team-intro>p{font-size:1rem;line-height:1.95;max-width:410px}.museum-team-intro .button{margin-top:16px;background:#173641;border-color:#173641;display:inline-flex;align-items:center;gap:24px}.museum-team-scope{display:block;font-size:.75rem;color:#5d6e6c;margin-top:18px;line-height:1.8}
.museum-field-record{padding:26px 34px 6px;background:#f7f7f0;border-top:3px solid #a6825b;box-shadow:0 10px 26px #263c3207}.museum-record-header{display:flex;justify-content:space-between;color:#7d684f;font-size:.75rem;letter-spacing:.06em;padding-bottom:17px;border-bottom:1px solid #d1d8cf}.museum-field-record h3{font-size:1.375rem;line-height:1.6;margin:23px 0}.museum-field-record ol{list-style:none;padding:0;margin:0}.museum-field-record li{display:grid;grid-template-columns:100px 1fr;gap:20px;position:relative;padding:0 0 26px}.museum-field-record time{font-variant-numeric:tabular-nums;font-size:.8125rem;color:#836448;padding-top:3px}.museum-field-record strong{font-size:.9375rem;font-weight:600}.museum-field-record p{font-size:.8125rem;line-height:1.8;margin:7px 0}.museum-field-record li a{font-size:.75rem;color:var(--teal);padding-block:5px;display:inline-block}
.museum-reading-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.museum-reading-item{color:var(--ink);display:flex;flex-direction:column;min-width:0}.museum-board-preview{padding:12px;background:#e7eae3;border:1px solid #dce1d8;overflow:hidden}.museum-board-preview img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;box-shadow:0 4px 10px #102a3412}.museum-reading-meta{color:var(--muted);font-size:.75rem;margin-top:19px}.museum-reading-item h3{font-size:1.2rem;font-weight:600;line-height:1.75;margin:6px 0 17px;max-width:24em}.museum-reading-link{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:12px;margin-top:auto;color:var(--teal);font-size:.8125rem}.museum-reading-item:hover h3{color:var(--accent)}
.museum-takeaway{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center;border-top:1px solid #b6c5bd;padding-top:48px;padding-bottom:55px}.museum-takeaway h2{font-size:clamp(1.65rem,2.8vw,2.4rem);line-height:1.55;margin:0 0 15px;font-weight:500}.museum-takeaway p{font-size:.9375rem;color:var(--muted);margin:0}.museum-takeaway-actions{display:flex;flex-direction:column;align-items:flex-start;gap:15px}.museum-takeaway-actions>.button{display:flex;gap:35px;background:#163742;border-color:#163742;min-height:52px}.museum-takeaway-actions details{margin-top:5px;width:100%;padding-top:14px;border-top:1px solid var(--line);font-size:.8125rem}.museum-takeaway-actions summary{cursor:pointer;padding-block:5px;color:var(--muted)}.museum-takeaway-actions details a{display:inline-flex;margin:12px 20px 0 0;color:var(--teal);min-height:30px}
:is(#signal-lab,#team-story,#innovation){scroll-margin-top:10px}
@media(max-width:1080px){.museum-hero-inner{min-height:590px;padding-block:52px 65px}.museum-hero-art{left:30%}.museum-hero-art:after{background:linear-gradient(90deg,#102a34,#102a344d 52%,#102a340a)}.museum-hero-copy{max-width:440px}.museum-hero h1{font-size:5.2rem}.museum-enter{min-width:250px;gap:25px;padding:16px 18px}.museum-signal-layout{grid-template-columns:1.25fr 1fr}.museum-signal-layout #tech-detail{padding:25px}.museum-team-inner{gap:6%}.museum-field-record{padding-inline:24px}.museum-field-record li{grid-template-columns:85px 1fr;gap:12px}.museum-section-head>p{max-width:270px;flex-shrink:1}}
@media(max-width:780px){.museum-hero-inner{min-height:565px}.museum-hero h1{font-size:4.5rem}.museum-kicker{font-size:.75rem;letter-spacing:.03em}.museum-enter{bottom:30px;min-width:220px}.museum-scene-label{bottom:6px}.museum-chapters a{padding:20px 16px;grid-template-columns:25px 1fr;gap:0 5px}.museum-chapters small{display:none}.museum-chapters strong{font-size:.9375rem}.museum-signal-layout{grid-template-columns:minmax(0,1fr)}.museum-signal-layout #tech-detail{padding:28px}.museum-team-inner{grid-template-columns:minmax(0,1fr);gap:32px}.museum-team-intro{max-width:600px}.museum-team-intro h2 br{display:none}.museum-team-intro h2{font-size:2.5rem}.museum-reading-grid{gap:20px}.museum-reading-item h3{font-size:1.0625rem}.museum-takeaway{gap:35px}.museum-section-head{align-items:start}.museum-section-head>p br{display:none}}
@media(max-width:600px){.header{min-height:72px}.museum-hero-art{position:relative;inset:auto;height:260px;order:2}.museum-hero-art:after{background:linear-gradient(180deg,#102a34 0%,#102a3400 32%)}.museum-hero{display:flex;flex-direction:column}.museum-hero-inner{position:static;min-height:0;padding:33px 22px 0;order:1;width:100%}.museum-hero-copy{max-width:none}.museum-kicker{margin-bottom:18px;font-size:.6875rem;gap:8px}.museum-kicker>span{width:17px}.museum-hero h1{font-size:clamp(3.35rem,15vw,4.65rem);line-height:1.14;margin-bottom:17px}.museum-hero h1 br{display:block}.museum-hero-lead{font-size:.9375rem;line-height:1.8;margin-bottom:20px}.museum-hero-lead br{display:none}.museum-start{font-size:.875rem}.museum-hero .museum-start{min-height:48px;padding:10px 18px;gap:22px}.museum-watch{display:inline-flex;margin:14px 0 4px;font-size:.8125rem;gap:7px}.museum-hero-copy .museum-start{margin-right:18px}.museum-enter{position:absolute;right:20px;bottom:35px;min-width:220px;padding:13px 16px;gap:30px}.museum-enter span{font-size:.875rem}.museum-enter small{font-size:.6875rem}.museum-scene-label{right:20px;bottom:8px;font-size:.625rem}.museum-chapters{padding:0 20px}.museum-chapters a{display:flex;gap:6px;padding:19px 10px;flex-wrap:wrap;justify-content:center}.museum-chapters a:first-child{padding-left:0}.museum-chapters span{font-size:.6875rem;padding-top:2px}.museum-chapters strong{font-size:.8125rem;white-space:nowrap}.museum-section{padding-top:38px;padding-bottom:36px}.museum-section-head{display:block;margin-bottom:22px}.museum-section-number{font-size:.6875rem;margin-bottom:10px}.museum-section-head h2{font-size:1.7rem;line-height:1.5}.museum-section-head>p{font-size:.875rem;margin-top:12px;max-width:none}.museum-section-head>.text-link{margin-top:10px}.museum-signal-layout #tech-detail{padding:23px}.museum-signal-layout #tech-detail h2{font-size:1.5rem;margin-block:9px 15px}.museum-signal-layout .device-takeaway{font-size:1.0625rem}.museum-signal-layout #tech-detail>p:not(.device-takeaway){font-size:.875rem}.museum-section-foot{gap:6px 18px;padding-top:15px;font-size:.8125rem}.museum-section-foot>span{flex-basis:100%}.museum-team-inner{padding-top:38px;padding-bottom:36px;gap:28px}.museum-team-intro h2{font-size:2.2rem;margin-bottom:17px}.museum-team-intro>p{font-size:.9375rem}.museum-field-record{padding:19px 20px 0}.museum-field-record h3{font-size:1.2rem;margin:19px 0}.museum-field-record li{grid-template-columns:1fr;gap:5px;padding-bottom:22px}.museum-field-record p{margin-top:5px}.museum-field-record time{font-size:.75rem}.museum-reading-grid{grid-template-columns:minmax(0,1fr);gap:26px}.museum-board-preview{padding:12px}.museum-reading-meta{margin-top:14px}.museum-reading-item h3{font-size:1.125rem;margin-bottom:12px}.museum-takeaway{grid-template-columns:minmax(0,1fr);gap:26px;padding-top:34px;padding-bottom:38px}.museum-takeaway h2{font-size:1.8rem}.museum-takeaway-actions{gap:10px}.museum-takeaway-actions>.text-link{font-size:.8125rem}:is(#signal-lab,#team-story,#innovation){scroll-margin-top:10px}}

@media(max-width:600px){.museum-enter{min-width:0;padding:12px 16px;gap:30px}.museum-enter small{display:none}}
@media(max-width:900px){.header nav.open .nav-search{grid-column:1/-1;border-left:0;border-top:1px solid #49646b;padding-left:0;padding-top:14px;margin-top:4px}}

/* Interior exhibition rooms: the same materials, with room to read. */
.section-tabs a[aria-current="page"] { color:var(--ink); border-color:#a78458; }
.section-tabs a:hover { color:var(--accent-dark); }
button.text-link { border-bottom-color:#b3987566; }
.header nav a:not([aria-current="page"]):hover::after { background:#91acae; }
.pagehead .eyebrow { color:#805b38; font-size:.75rem; letter-spacing:.08em; }
@media(min-width:1000px) {
  .pagehead { display:grid; grid-template-columns:minmax(0,1.15fr) minmax(0,1fr); align-items:end; gap:0 48px; padding-bottom:12px; }
  .pagehead .eyebrow { grid-column:1/-1; margin-bottom:10px; }
  .pagehead h1 { margin:0; }
  .pagehead > p { margin:0 0 4px; font-size:.9375rem; line-height:1.85; max-width:520px; }
  .boards-page .pagehead { display:block; padding-bottom:0; }
}

/* Scene preview: conceal screenshot controls through the layout crop only. */
.gallery-page .exhibit-overview { background:#e7ece6; border:1px solid #d4dbd2; }
.gallery-page .exhibit-image { position:relative; min-height:355px; }
.gallery-page .exhibit-photo { position:absolute; inset:0; overflow:hidden; }
.gallery-page .exhibit-photo img { width:100%; height:calc(100% + 92px); min-height:0; object-fit:cover; object-position:50% 50%; transform:translateY(-16px); }
.gallery-page .image-label { background:#102a34ed; padding:8px 15px; font-size:.6875rem; letter-spacing:.06em; }
.gallery-page .exhibit-overview > div:last-child { padding:32px 38px; }
.gallery-page .exhibit-overview h2 { font-size:clamp(1.8rem,2.6vw,2.5rem); margin:12px 0 18px; line-height:1.45; }
.gallery-page .exhibit-overview .eyebrow { font-size:.75rem; color:#805b38; letter-spacing:.1em; }
.gallery-page .exhibit-entry-actions .button { border-radius:2px; }
.gallery-page .exhibition-topics { margin-top:52px; }
.gallery-page .exhibition-topics-heading { align-items:end; margin-bottom:26px; }
.gallery-page .exhibition-topics-heading .eyebrow { font-size:.75rem; margin-bottom:8px; }
.gallery-page .exhibition-topics-heading h2 { font-size:1.75rem; }
.gallery-chapter { display:grid; grid-template-columns:185px minmax(0,1fr); gap:34px; padding:30px 0 36px; border-top:1px solid #bdc8bf; }
.gallery-chapter-heading { padding-top:2px; }
.gallery-chapter-number { display:block; font:400 2.8rem/1.2 Georgia,serif; color:#8b6e4e; margin-bottom:16px; }
.gallery-chapter-heading h3 { font-size:1.375rem; margin:0 0 12px; }
.gallery-chapter-heading p { font-size:.875rem; line-height:1.9; margin:0 0 18px; }
.gallery-chapter-range { font-size:.75rem; color:var(--muted); letter-spacing:.03em; }
.gallery-page .topic-directory { grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; align-items:stretch; }
.gallery-page .gallery-chapter:first-of-type .topic-directory { grid-template-columns:repeat(2,minmax(0,1fr)); }
.gallery-page .topic-directory > a { display:flex; flex-direction:column; align-items:stretch; min-width:0; overflow:visible; border:0; background:transparent; box-shadow:none; }
.gallery-page .topic-directory .topic-cover { padding:9px; background:#e8ebe4; border:1px solid #d7ddd3; }
.gallery-page .topic-directory img { display:block; width:100%; height:auto; min-height:0; aspect-ratio:16/9; object-fit:contain; border:0; box-shadow:0 3px 8px #102a3415; }
.gallery-page .topic-directory .topic-copy { padding:17px 0 0; flex:1; display:flex; flex-direction:column; }
.gallery-page .topic-copy > span { font-size:.75rem; color:#805b38; }
.gallery-page .topic-copy h4 { font-size:1.0625rem; font-weight:600; line-height:1.8; margin:7px 0 16px; }
.gallery-page .topic-copy p { font-size:.75rem; line-height:1.65; border-top:1px solid var(--line); padding-top:10px; margin-top:auto; color:var(--muted); gap:10px; }
.gallery-page .topic-copy p > span { color:var(--teal); font-size:1.125rem; }
.gallery-page .topic-card:hover h4 { color:var(--accent-dark); }
.gallery-page .topic-card:hover .topic-cover { border-color:#a78b69; }
.gallery-page .topic-card:focus-visible { outline-offset:7px; }

/* Put the chapter selector next to the reading surface, with full diagrams. */
.boards-page .board-menu { gap:10px; padding-bottom:12px; margin:0 0 24px; scrollbar-width:thin; scrollbar-color:#9cafac #e8ede6; }
.boards-page .board-menu button { width:148px; flex-basis:148px; border-radius:2px; border-color:#c4cec7; }
.boards-page .board-menu-label { padding:8px 10px; }
.boards-page .board-menu-label > strong { font:500 .75rem/1.65 var(--sans); }
.boards-page .board-menu-label > span { font:400 .6875rem/1.5 var(--sans); }
.boards-page .board-menu button.active { border-color:#b99466; background:#163540; }
.boards-page .board-menu button img { aspect-ratio:16/9; object-fit:contain; }

/* A small reading desk and restrained book covers. */
.library-page .reading-selection { display:grid; grid-template-columns:155px minmax(0,1fr); gap:30px; padding:26px 28px; margin:0 0 28px; background:#e8ede6; border:1px solid #d1dbd1; border-top:2px solid #a98a63; }
.library-page .reading-selection > h2 { font:500 1.6rem/1.6 var(--serif); margin:0; }
.library-page .reading-selection > div { gap:24px; }
.library-page .reading-selection article { padding-left:20px; border-left:1px solid #bbc9bd; }
.library-page .reading-selection .eyebrow { font-size:.75rem; letter-spacing:.06em; margin-bottom:9px; }
.library-page .reading-selection p { font-size:.875rem; line-height:1.85; margin:0 0 7px; }
.library-page .reading-selection .text-link { min-height:36px; padding:3px 0; font-size:.8125rem; }
.library-page .doc-item[data-doc='1'] { --cover-bg:#315754; --cover-soft:#e0e9df; }
.library-page .doc-item[data-doc='4'] { --cover-bg:#e2d7c4; --cover-ink:#263e43; --cover-soft:#4d5e5b; }
.library-page .doc-item[data-doc='5'] { --cover-bg:#344942; --cover-soft:#e1e5d9; }
.library-page .doc-cover { border:1px solid #102a3412; border-left:4px solid #102a3422; box-shadow:3px 3px 0 #dbe0d5; }
.library-page .doc-item .doc-read { padding:7px 12px; min-height:40px; border-radius:2px; font-size:.8125rem; }
.library-page .doc-item .doc-download { font-size:.8125rem; padding:7px 0; }
.library-page .library-search input { border-radius:2px; }

/* Quiet, dark screening space; native player and bilingual controls remain. */
.film-page .film-screen { padding:22px 24px 16px; background:#102a34; border-top:2px solid #b69363; max-width:1100px; }
.film-page .film-controls { margin-bottom:16px; gap:12px; }
.film-page .film-language { padding:3px; gap:4px; background:#1b3944; border-color:#557079; border-radius:3px; }
.film-page .film-language button { color:#d9e4df; font-size:.875rem; min-height:40px; padding:8px 16px; border-radius:2px; }
.film-page .film-language button[aria-pressed='true'] { color:#102a34; background:#dfbd8b; }
.film-page .film-language button:hover { color:#fff; background:#31505a; }
.film-page .film-language button[aria-pressed='true']:hover { color:#102a34; background:#efcfa1; }
.film-page .film-runtime { color:#c4d4d0; font-size:.75rem; }
.film-page .film-player { border-radius:0; box-shadow:none; background:#081d25; }
.film-page .film-caption { display:flex; gap:8px 22px; padding-top:13px; }
.film-page .film-caption p { color:#c4d4d0; font-size:.75rem; margin-right:auto; }
.film-page .film-caption a { color:#e6c69b; font-size:.75rem; min-height:36px; margin:0; }
.film-page .film-screen :is(button,a):focus-visible { outline-color:#efd4a8; }

@media(max-width:1000px) {
  .gallery-chapter { grid-template-columns:150px minmax(0,1fr); gap:25px; }
  .gallery-page .topic-directory { gap:17px; }
  .library-page .reading-selection { grid-template-columns:1fr; gap:18px; }
  .library-page .reading-selection > h2 { font-size:1.4rem; }
}
@media(max-width:760px) {
  .gallery-chapter { grid-template-columns:minmax(0,1fr); gap:22px; }
  .gallery-chapter-heading { display:grid; grid-template-columns:48px 1fr auto; gap:5px 15px; align-items:baseline; }
  .gallery-chapter-number { grid-row:1/3; margin:0; font-size:2.3rem; }
  .gallery-chapter-heading h3 { margin:0; font-size:1.25rem; }
  .gallery-chapter-heading p { grid-column:2/-1; margin:0; font-size:.8125rem; }
  .gallery-chapter-range { grid-column:3; grid-row:1; font-size:.6875rem; }
  .gallery-page .topic-directory { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .gallery-page .exhibit-overview > div:last-child { padding:25px; }
  .library-page .reading-selection { padding:23px; }
  .library-page .reading-selection > div { grid-template-columns:minmax(0,1fr); gap:15px; }
  .library-page .reading-selection article { display:grid; grid-template-columns:1fr auto; gap:2px 16px; padding:0 0 14px; border-left:0; border-bottom:1px solid #c7d2c7; }
  .library-page .reading-selection article:last-child { border-bottom:0; padding-bottom:0; }
  .library-page .reading-selection .eyebrow { margin:0; }
  .library-page .reading-selection p { grid-column:1; margin:3px 0 0; }
  .library-page .reading-selection .text-link { grid-column:2; grid-row:1/3; align-self:center; }
  .film-page .film-screen { padding:16px 16px 12px; }
  .film-page .film-caption p { flex-basis:100%; margin:0; }
}
@media(max-width:600px) {
  .gallery-page .exhibit-image { min-height:215px; }
  .gallery-page .exhibit-overview h2 { font-size:1.85rem; }
  .gallery-page .exhibition-topics { margin-top:36px; }
  .gallery-page .exhibition-topics-heading h2 { font-size:1.5rem; }
  .gallery-page .exhibition-topics-heading p { font-size:.8125rem; }
  .gallery-chapter { padding:24px 0 28px; }
  .gallery-chapter-heading { grid-template-columns:37px 1fr; gap:4px 13px; }
  .gallery-chapter-range { grid-column:2; grid-row:3; }
  .gallery-chapter-number { font-size:2rem; }
  .gallery-page .topic-directory { grid-template-columns:minmax(0,1fr); gap:26px; }
  .gallery-page .gallery-chapter:first-of-type .topic-directory { grid-template-columns:minmax(0,1fr); }
  .gallery-page .topic-directory .topic-cover { padding:10px; }
  .gallery-page .topic-copy h4 { font-size:1rem; margin-block:6px 12px; }
  .boards-page .board-menu button { width:125px; flex-basis:125px; }
  .boards-page .board-menu { margin-bottom:20px; }
  .film-page .film-screen { padding:14px 12px 10px; }
  .film-page .film-language { width:100%; }
  .film-page .film-language button { flex:1; padding-inline:8px; font-size:.8125rem; }
  .film-page .film-runtime { font-size:.6875rem; }
}
@media(max-width:380px) {
  .library-page .reading-selection article { display:block; }
  .library-page .reading-selection .text-link { margin-top:4px; }
}

/* Content reading additions, 2026-10-07. */
.technology-reading { margin: 52px 0 32px; }
.technology-reading .content-fold { margin: 0; border-bottom: 0; }
.technology-reading .content-fold:last-child { border-bottom: 1px solid var(--line); }
.story-inquiry { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(24px,5vw,72px); padding: 40px 0; border-bottom: 1px solid var(--line); }
.story-inquiry h2 { margin-top: 12px; font-size: clamp(25px,3vw,36px); line-height: 1.45; }
.story-inquiry p { line-height: 1.95; color: var(--muted); }
.story-inquiry .story-question { margin-top: 24px; border-left: 2px solid var(--accent); padding-left: 18px; color: var(--ink); }
.search-question-links { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px 24px; margin: 22px 0; padding: 20px 0; border-block: 1px solid var(--line); }
.search-question-links span { color: var(--muted); font-size: 13px; }
.search-question-links a { color: var(--accent-dark); text-underline-offset: 4px; line-height: 1.6; }
.study-example { margin: 22px 0; }
.study-example p { line-height: 1.9; }
.study-example strong { color: var(--ink); }
@media(max-width:640px) { .story-inquiry { grid-template-columns: 1fr; gap: 8px; padding: 30px 0; } .search-question-links { flex-direction: column; align-items: flex-start; } }

/* 05. experience-refined.css */
/* Experience panels only. Page heading and navigation belong to the site shell. */
.experience-refined .experience-selected {
  --xp-ink: #102a34;
  --xp-paper: #f6f5f0;
  --xp-copper: #85603d;
  --xp-gold: #d6b384;
  --xp-muted: #53666a;
  --xp-line: #cdd3ca;
  color: var(--xp-ink);
}
.experience-refined .xp-entry {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 0;
  background: var(--xp-paper);
  border: 1px solid var(--xp-line);
  border-radius: 3px;
  overflow: hidden;
}
.experience-refined .xp-entry[hidden] { display: none; }
.experience-refined .xp-media {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  margin: 0;
  min-width: 0;
  background: #e9ede6;
  border-right: 1px solid var(--xp-line);
}
.experience-refined .xp-media > img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  object-position: 45% 63%;
}
.experience-refined .xp-media figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  flex-wrap: wrap;
  padding: 11px 18px;
  color: var(--xp-paper);
  background: var(--xp-ink);
  font-size: .8125rem;
  line-height: 1.55;
}
.experience-refined .xp-media figcaption > span:first-child { color: #d6b384; }
.experience-refined .xp-sandbox-media { background: #eef0e9; }
.experience-refined .xp-role-visual {
  display: block;
  align-self: center;
  width: 100%;
  height: auto;
  max-height: 360px;
}
.experience-refined .xp-entry-copy {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0;
  padding: 26px 30px;
  min-width: 0;
}
.experience-refined .xp-kicker {
  margin: 0 0 10px;
  color: var(--xp-copper);
  font-size: .8125rem;
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: .065em;
}
.experience-refined .xp-entry-copy h2 {
  margin: 0 0 12px;
  color: var(--xp-ink);
  font-size: clamp(1.55rem, 2.6vw, 1.9rem);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -.025em;
  overflow-wrap: anywhere;
}
.experience-refined .xp-entry-copy .xp-lead {
  margin: 0;
  color: var(--xp-muted);
  font-size: .9375rem;
  line-height: 1.7;
}
.experience-refined .xp-observation {
  margin: 20px 0 18px;
  padding-left: 14px;
  border-left: 2px solid var(--xp-gold);
}
.experience-refined .xp-observation > span {
  display: block;
  margin-bottom: 5px;
  color: var(--xp-copper);
  font-size: .8125rem;
  font-weight: 600;
  line-height: 1.55;
}
.experience-refined .xp-observation p {
  margin: 0;
  color: var(--xp-ink);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
}
.experience-refined .xp-observe {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: look;
}
.experience-refined .xp-observe li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 3px 10px;
  counter-increment: look;
  font-size: .875rem;
  line-height: 1.6;
}
.experience-refined .xp-observe li::before {
  content: counter(look, decimal-leading-zero);
  grid-row: 1 / 3;
  padding-top: 1px;
  color: var(--xp-copper);
  font-size: .75rem;
  font-variant-numeric: tabular-nums;
}
.experience-refined .xp-observe strong { font-weight: 600; }
.experience-refined .xp-observe li > span { color: var(--xp-muted); }
.experience-refined .xp-launch-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 16px;
}
.experience-refined .xp-launch-row .xp-launch {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--xp-ink);
  border-radius: 3px;
  color: var(--xp-paper);
  background: var(--xp-ink);
  font: 600 .9375rem/1.5 var(--sans, "Microsoft YaHei", sans-serif);
  box-shadow: none;
}
.experience-refined .xp-launch:hover { background: #23434c; border-color: #23434c; }
.experience-refined .xp-launch > span { color: var(--xp-gold); transition: transform 160ms ease; }
.experience-refined .xp-launch:hover > span { transform: translate(2px, -2px); }
.experience-refined .xp-launch-row > p {
  margin: 0;
  color: var(--xp-muted);
  font-size: .8125rem;
  line-height: 1.6;
}
.experience-refined #experience-stage:empty { display: none; }
.experience-refined .xp-takeaway {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 16px;
  padding: 13px 0;
  border-block: 1px solid var(--xp-line);
}
.experience-refined .xp-takeaway > p {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 14px;
  margin: 0;
  font-size: .875rem;
  line-height: 1.7;
}
.experience-refined .xp-takeaway strong { color: var(--xp-ink); font-weight: 600; }
.experience-refined .xp-takeaway p > span { color: var(--xp-muted); }
.experience-refined .xp-takeaway > div { display: flex; flex-wrap: wrap; gap: 0 22px; }
.experience-refined .xp-takeaway a,
.experience-refined .xp-inline-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  color: var(--xp-ink);
  font-size: .875rem;
  font-weight: 600;
  line-height: 1.6;
  text-decoration: underline;
  text-decoration-color: #aab9bd;
  text-underline-offset: 5px;
}
.experience-refined .xp-takeaway a:hover,
.experience-refined .xp-inline-link:hover { color: var(--xp-copper); text-decoration-color: currentColor; }
.experience-refined .experience-notes { margin-top: 14px; padding-top: 0; border-top: 0; }
.experience-refined .experience-notes summary {
  display: list-item;
  width: fit-content;
  min-height: 44px;
  padding: 11px 0;
  color: var(--xp-muted);
  font-size: .875rem;
  line-height: 1.6;
}
.experience-refined .experience-notes-content {
  padding: 0 0 12px;
  max-width: 900px;
}
.experience-refined .experience-notes p {
  margin: 0 0 12px;
  color: var(--xp-muted);
  font-size: .875rem;
  line-height: 1.8;
}
.experience-refined .experience-notes .text-link { display: inline-flex; align-items: center; min-height: 44px; font-size: .875rem; }
.experience-refined .frame-top { padding-block: 16px; border-bottom: 1px solid var(--xp-line); gap: 12px; }
.experience-refined .frame-top h2 { color: var(--xp-ink); font-size: 1.25rem; }
.experience-refined .frame-tools .button { min-height: 44px; border-radius: 4px; box-shadow: none; }
.experience-refined .frame-wrap { border: 1px solid var(--xp-line); border-radius: 4px; }
.experience-refined .frame-wrap:fullscreen { border: 0; border-radius: 0; }
.experience-refined .experience-chat-single {
  display: grid;
  grid-template-columns: minmax(200px, .34fr) minmax(0, 1fr);
  align-items: start;
  gap: 32px;
  max-width: none;
  margin: 0;
}
.experience-refined .xp-chat-brief { padding-top: 16px; border-top: 2px solid var(--xp-gold); min-width: 0; }
.experience-refined .xp-chat-brief h2 { margin: 0 0 14px; font-size: 1.55rem; line-height: 1.4; letter-spacing: -.02em; }
.experience-refined .xp-chat-brief > p:not(.xp-kicker) { margin: 0 0 14px; color: var(--xp-muted); font-size: .9375rem; line-height: 1.8; }
.experience-refined .xp-chat-visual { display: block; width: 100%; max-width: 330px; height: auto; margin: 12px 0 16px; }
.experience-refined .xp-chat-steps { margin: 0; }
.experience-refined .xp-chat-steps > div { display: grid; grid-template-columns: 4em minmax(0, 1fr); gap: 10px; padding: 12px 0; border-top: 1px solid var(--xp-line); font-size: .875rem; line-height: 1.7; }
.experience-refined .xp-chat-steps dt { font-weight: 600; }
.experience-refined .xp-chat-steps dd { margin: 0; color: var(--xp-muted); }
.experience-refined .xp-chat-brief > .xp-chat-local { margin-top: 12px; font-size: .8125rem; }
.experience-refined .xp-chat-console { min-width: 0; }
.experience-refined .xp-chat-console .xt-guide { display: grid; gap: 0; }
.experience-refined .xp-chat-console .xt-guide > .eyebrow { display: none; }
.experience-refined .xt-card { grid-row: 2; border: 1px solid var(--xp-line); border-radius: 4px; background: #fff; box-shadow: none; }
.experience-refined .xt-header { padding: 18px 20px; background: var(--xp-ink); }
.experience-refined .xt-header h3 { color: var(--xp-paper); font: 600 1.25rem/1.45 var(--sans, "Microsoft YaHei", sans-serif); }
.experience-refined .xt-header h3 span,
.experience-refined .xt-header p { color: #d1dce0; font-size: .8125rem; }
.experience-refined .xt-avatar { width: 44px; height: 44px; border-radius: 4px; background: var(--xp-paper); }
.experience-refined .xt-header i { display: none; }
.experience-refined .xt-reset { min-height: 44px; padding: 10px 12px; border: 1px solid #91a8b2; border-radius: 4px; color: #fff; font-size: .8125rem; }
.experience-refined .xt-reset:hover { background: #29424e; }
.experience-refined .xt-toolbar { padding: 10px 20px; border-color: var(--xp-line); background: #fff; }
.experience-refined .xt-toolbar > span { color: var(--xp-muted); font-size: .8125rem; }
.experience-refined .xt-modes { gap: 2px; border-radius: 4px; padding: 2px; background: #eef0ed; }
.experience-refined .xt-modes button { min-height: 44px; padding: 8px 12px; border-radius: 3px; color: var(--xp-muted); font-size: .8125rem; }
.experience-refined .xt-modes button[aria-pressed="true"] { color: var(--xp-ink); background: #fff; box-shadow: none; outline: 1px solid var(--xp-line); }
.experience-refined .xt-messages { height: clamp(260px, 33dvh, 340px); padding: 20px; gap: 20px; scrollbar-color: #adbfc5 transparent; }
.experience-refined .xt-message { max-width: 100%; }
.experience-refined .xt-speaker { margin: 0 0 7px; color: var(--xp-muted); font-size: .8125rem; }
.experience-refined .xt-bot .xt-bubble { padding: 0 0 0 14px; border: 0; border-left: 2px solid var(--xp-line); border-radius: 0; color: var(--xp-ink); background: transparent; }
.experience-refined .xt-text { font-size: 1rem; line-height: 1.8; }
.experience-refined .xt-user { max-width: 85%; }
.experience-refined .xt-user .xt-bubble { padding: 12px 14px; border: 1px solid var(--xp-line); border-radius: 4px; color: var(--xp-ink); background: #eef0ea; }
.experience-refined .xt-sources { border-color: var(--xp-line); font-size: .875rem; }
.experience-refined .xt-sources summary { min-height: 44px; padding-block: 10px; line-height: 1.7; color: var(--xp-muted); }
.experience-refined .xt-sources a { color: var(--xp-ink); }
.experience-refined .xt-sources a span { color: var(--xp-muted); font-size: .8125rem; }
.experience-refined .xt-related { border-color: var(--xp-line); }
.experience-refined .xt-related a { display: inline-flex; align-items: center; min-height: 44px; color: var(--xp-copper); font-size: .875rem; }
.experience-refined .xt-follow { padding: 0 20px 16px; }
.experience-refined .xt-follow-label { color: var(--xp-muted); font-size: .8125rem; }
.experience-refined .xt-suggestions { gap: 8px; }
.experience-refined .xt-suggestions button { min-height: 44px; padding: 9px 12px; border: 1px solid var(--xp-line); border-radius: 4px; color: var(--xp-ink); background: #fff; font-size: .875rem; line-height: 1.65; }
.experience-refined .xt-suggestions button:hover { border-color: #879da7; background: var(--xp-paper); }
.experience-refined .xt-suggestions button span { color: var(--xp-copper); }
.experience-refined .xt-form { padding: 16px 20px; border-color: var(--xp-line); background: var(--xp-paper); }
.experience-refined .xt-input-label { margin-bottom: 8px; color: var(--xp-ink); font-size: .875rem; }
.experience-refined .xt-compose { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.experience-refined .xt-compose input { width: 100%; min-width: 0; min-height: 48px; padding: 11px 12px; border: 1px solid #91a8b2; border-radius: 4px; color: var(--xp-ink); background: #fff; font-size: 1rem; }
.experience-refined .xt-compose button { min-height: 48px; padding: 11px 15px; border-radius: 3px; color: var(--xp-paper); background: var(--xp-ink); font-size: .9375rem; }
.experience-refined .xt-compose button:hover { background: #23434c; }
.experience-refined .xt-input-note { flex-wrap: wrap; color: var(--xp-muted); font-size: .75rem; line-height: 1.65; }
.experience-refined .xt-starters { grid-row: 1; margin: 0 0 16px; }
.experience-refined .xt-categories { gap: 20px; margin-bottom: 10px; border-color: var(--xp-line); }
.experience-refined .xt-categories button { min-height: 44px; padding-block: 8px; color: var(--xp-muted); font-size: .875rem; }
.experience-refined .xt-categories button[aria-pressed="true"] { color: var(--xp-ink); border-bottom-color: var(--xp-copper); }
.experience-refined .xt-boundary { grid-row: 3; margin-top: 12px; color: var(--xp-muted); font-size: .8125rem; line-height: 1.75; }
.experience-refined .xt-boundary a { display: inline-flex; align-items: center; min-height: 44px; color: var(--xp-ink); }
.experience-refined .experience-selected :is(a, button, input, summary, [tabindex]):focus-visible { outline: 3px solid var(--xp-copper); outline-offset: 3px; }
.experience-refined .experience-selected .xt-header :is(a, button):focus-visible { outline-color: var(--xp-gold); }
@media (max-width: 1000px) {
  .experience-refined .xp-entry-copy { padding: 22px; }
  .experience-refined .experience-chat-single { grid-template-columns: minmax(190px, .36fr) minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 760px) {
  .experience-refined .xp-entry { grid-template-columns: minmax(0, 1fr); }
  .experience-refined .xp-media { border-right: 0; border-bottom: 1px solid var(--xp-line); }
  .experience-refined .xp-media > img { height: 180px; min-height: 0; }
  .experience-refined .xp-role-visual { height: 180px; }
  .experience-refined .xp-role-visual text[font-weight="700"],
  .experience-refined .xp-role-visual text[fill="#fff"] { font-size: 40px; }
  .experience-refined .xp-role-visual text[font-size="22"] { display: none; }
  .experience-refined .xp-entry-copy { padding: 22px; }
  .experience-refined .experience-chat-single { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .experience-refined .xp-chat-brief { display: grid; grid-template-columns: minmax(0, 1fr) minmax(160px, .65fr); gap: 0 22px; }
  .experience-refined .xp-chat-brief > :not(.xp-chat-visual) { grid-column: 1; }
  .experience-refined .xp-chat-visual { grid-column: 2; grid-row: 2 / 5; align-self: center; margin: 0; }
  .experience-refined .xp-chat-steps { display: none; }
  .experience-refined .xt-header { flex-wrap: wrap; align-items: center; gap: 12px; }
  .experience-refined .xt-toolbar { flex-wrap: wrap; align-items: center; gap: 8px; }
  .experience-refined .xt-categories { flex-wrap: wrap; gap: 0 18px; }
}
@media (max-width: 480px) {
  .experience-refined .xp-media > img { height: 170px; }
  .experience-refined .xp-role-visual { height: 170px; }
  .experience-refined .xp-media figcaption { padding: 9px 14px; font-size: .75rem; }
  .experience-refined .xp-entry-copy { padding: 19px 18px; }
  .experience-refined .xp-launch-row { align-items: flex-start; }
  .experience-refined .xp-launch-row .xp-launch { width: 100%; }
  .experience-refined .xp-launch-row > p br { display: none; }
  .experience-refined .xp-launch-row > p { line-height: 1.75; }
  .experience-refined .xp-chat-brief { display: block; }
  .experience-refined .xp-chat-visual { display: none; }
  .experience-refined .xp-chat-brief > .xp-chat-local { margin: 0 0 4px; }
  .experience-refined .xt-header { padding: 16px; }
  .experience-refined .xt-toolbar { padding: 10px 16px; }
  .experience-refined .xt-messages { padding: 18px 16px; height: 280px; }
  .experience-refined .xt-follow { padding: 0 16px 14px; }
  .experience-refined .xt-form { padding: 14px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .experience-refined .xp-launch > span { transition: none; }
  .experience-refined .xp-launch:hover > span { transform: none; }
}

/* Final mobile review: lead with the question controls, keep the explanatory aside on desktop. */
@media (max-width: 680px) {
  .experience-refined .xp-chat-brief { display: none; }
  .experience-refined .xp-chat-layout { gap: 0; }
  .experience-refined .xp-chat-console .xt-guide { display: flex; flex-direction: column; }
  .experience-refined .xp-chat-console .xt-starters { order: -1; margin-bottom: 14px; min-width: 0; }
  .experience-refined .xp-chat-console #xt-prompts { display: flex; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 6px; gap: 8px; }
  .experience-refined .xp-chat-console #xt-prompts button { flex: 0 0 auto; white-space: nowrap; min-height: 42px; padding: 9px 12px; font-size: .8125rem; }
  .experience-refined .xp-chat-console .xt-card { display: flex; flex-direction: column; }
  .experience-refined .xp-chat-console .xt-header { order: 0; padding: 16px; gap: 12px; }
  .experience-refined .xp-chat-console .xt-reset { font-size: .75rem; min-height: 38px; padding: 7px 10px; }
  .experience-refined .xp-chat-console .xt-toolbar { order: 1; padding: 10px 14px; }
  .experience-refined .xp-chat-console .xt-form { order: 2; padding: 14px; border-block: 1px solid #cdd2ce; }
  .experience-refined .xp-chat-console .xt-compose { display: flex; flex-wrap: nowrap; }
  .experience-refined .xp-chat-console .xt-compose input { flex: 1; min-width: 0; }
  .experience-refined .xp-chat-console .xt-compose button { flex: 0 0 auto; padding-inline: 13px; }
  .experience-refined .xp-chat-console .xt-messages { order: 3; height: 300px; padding: 18px 14px; }
  .experience-refined .xp-chat-console .xt-follow { order: 4; }
}

/* 06. project-study.css */
/* Project context and learning share the existing museum typography and palette. */
/* Route jumps restore position immediately; deliberate in-page motion opts in. */
html{scroll-behavior:auto}
select,textarea{font:inherit;max-width:100%}
select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:4px}
.project-intro{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;margin-top:32px}
.project-intro h2{font:600 clamp(1.75rem,3vw,2.5rem)/1.5 var(--serif);margin-bottom:20px}
.scope-panel{padding:26px 30px;border-left:3px solid var(--teal);background:#e9eeeb}
.scope-panel strong{font-size:1.125rem}.scope-panel p{margin-block:14px}
.scope-panel details{border-top:1px solid #c7d2ce;margin:18px 0;padding-top:12px}.scope-panel summary{cursor:pointer;color:var(--accent-dark);min-height:36px}.scope-panel details p{font-size:.9375rem}
.page-outline{display:flex;align-items:center;gap:10px 24px;flex-wrap:wrap;margin:24px 0 30px;padding:16px 20px;background:#eeeee8;border-left:3px solid var(--teal);font-size:.875rem}.page-outline>span{color:var(--muted);white-space:nowrap}.page-outline a{padding:6px 0;color:var(--ink);text-decoration:underline;text-underline-offset:5px;text-decoration-color:#9aa8a2}.page-outline a:hover{color:var(--accent-dark)}
.front-index{grid-template-columns:repeat(4,minmax(0,1fr))}
.project-section h2,.project-section summary,#task-path-title,.study-quiz fieldset{scroll-margin-top:110px}
@media(max-width:700px){.page-outline{gap:6px 20px;padding:14px 16px;margin:22px 0}.page-outline>span{width:100%}.project-section h2,.project-section summary,#task-path-title,.study-quiz fieldset{scroll-margin-top:94px}}
@media(max-width:700px){.front-index{grid-template-columns:repeat(2,minmax(0,1fr))}.front-index a{padding:16px 12px;grid-template-columns:24px minmax(0,1fr);gap:0 10px}.front-index a+a{border-left:0;padding-left:12px}.front-index a:nth-child(even){border-left:1px solid var(--line)}.front-index a:nth-child(n+3){border-top:1px solid var(--line)}.front-index span{grid-row:span 2}.front-index small{font-size:.75rem}.front-index strong{font-size:.9375rem}}
.project-section{margin-top:56px}.project-section>p{max-width:960px}
.context-roles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px;margin-top:26px}.context-roles article{border-top:2px solid var(--teal);padding-top:20px;min-width:0}.context-roles h3{font-size:1.125rem}.context-roles p{font-size:.9375rem}
.study-discussions>details{padding:20px 0;border-bottom:1px solid var(--line)}.study-discussions summary{cursor:pointer;font-weight:600}.study-discussions details p{margin-top:20px}
.development-timeline{padding:0;margin:0;list-style:none;border-top:1px solid var(--line)}
.development-timeline>li{display:grid;grid-template-columns:185px minmax(0,1fr);gap:36px;padding:28px 0;border-bottom:1px solid var(--line)}
.development-date{display:flex;align-items:baseline;gap:18px;color:var(--accent)}
.development-date>span{font-size:.875rem}.development-date time{font-size:1.25rem;font-weight:600}
.development-timeline h3{font-size:1.375rem;margin-bottom:12px}.development-timeline p{max-width:900px;margin-bottom:12px}
.development-question{margin-top:16px;color:var(--teal);font-size:.9375rem}
.spirit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:28px}
.spirit-card{position:relative;padding:24px;border-top:3px solid var(--ink);background:#fff;min-width:0}
.spirit-number{display:block;color:var(--accent);font-size:.875rem;margin-bottom:12px}
.spirit-card h3{font-size:1.25rem}.spirit-card p{margin-bottom:16px}
.spirit-card details{border-top:1px solid var(--line);margin-top:20px;padding-top:14px}
.spirit-card summary{cursor:pointer;color:var(--accent-dark);font-size:.9375rem;min-height:36px}
.spirit-card details p{margin-top:18px}.spirit-reflection{padding-left:14px;border-left:2px solid var(--teal)}
.project-continue{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-top:40px;padding:30px;border-block:1px solid var(--line);background:#e9eeeb}
.project-continue h2{font-size:1.375rem;margin-bottom:8px}.project-continue p{margin:0}.project-continue>.button{flex-shrink:0}
.outcome-intro{max-width:840px}.outcome-group{margin-top:40px}.outcome-group>h2{font-size:1.25rem;color:var(--accent)}
.outcome-item{display:grid;grid-template-columns:64px minmax(0,1fr);gap:24px;padding:26px 0;border-top:1px solid var(--line)}
.outcome-number{color:var(--muted);font:600 1.75rem/1.5 var(--serif)}.outcome-item h3{font-size:1.25rem;margin-bottom:10px}
.outcome-item p{max-width:800px}.outcome-item .actions{margin-top:14px}
.delivery-spec dl{display:grid;grid-template-columns:130px minmax(0,1fr);gap:16px 28px}.delivery-spec dt{font-weight:600}.delivery-spec dd{margin:0;color:var(--muted)}
.audience-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-block:24px}
.audience-tabs button{background:transparent;color:var(--ink);border:1px solid var(--line);padding:12px 18px;min-height:46px;border-radius:3px}
.audience-tabs button[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.task-route{padding:28px 32px;background:#fff;border:1px solid var(--line)}
.task-stations{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;list-style:none;padding:0;margin-top:26px}
.task-stations li{display:grid;grid-template-columns:28px minmax(0,1fr);gap:14px;min-width:0}.task-stations li>span{color:var(--accent);font-size:.875rem;padding-top:3px}
.task-stations h3{font-size:1.125rem}.task-stations p{margin-bottom:8px}.task-prompt{border-top:1px solid var(--line);padding-top:18px;margin-bottom:0;color:var(--teal)}
.study-card{padding:28px 32px;background:#fff;border:1px solid var(--line)}
.study-card label{display:block;font-weight:600;margin-bottom:22px;min-width:0}.study-card-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.study-card input,.study-card select,.study-card textarea{display:block;width:100%;padding:12px 14px;margin-top:8px;background:var(--paper);border:1px solid #aab5b4;border-radius:3px;color:var(--ink);font-weight:400}
.study-card textarea{resize:vertical;min-height:100px}.study-card select{text-overflow:ellipsis}.study-card details{margin-bottom:24px}.study-card summary{cursor:pointer;min-height:44px}.study-card details label{margin-top:14px}
.study-card-actions{display:flex;gap:12px 20px;flex-wrap:wrap;align-items:center}.study-card #study-card-status{margin:18px 0 0;min-height:26px}
.study-quiz{max-width:980px}.study-quiz fieldset{margin:0;padding:24px 0 28px;border:0;border-top:1px solid var(--line);min-width:0}
.study-quiz legend{float:left;width:100%;font-size:1.125rem;font-weight:600;padding:0;margin-bottom:18px;line-height:1.7}
.study-quiz legend span{display:inline-block;color:var(--accent);font-size:.875rem;margin-right:16px}
.quiz-options{clear:both;display:grid;grid-template-columns:1fr 1fr;gap:14px}.quiz-options label{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;background:#fff;border:1px solid var(--line);cursor:pointer;border-radius:3px;min-width:0}
.quiz-options label:has(input:checked){border-color:var(--teal);background:#e9eeeb}.quiz-options input{width:18px;height:18px;margin:5px 0 0;flex-shrink:0;accent-color:var(--teal)}
.study-quiz-result{max-width:980px;margin-top:38px;padding:28px 32px;background:#fff;border-top:3px solid var(--teal);scroll-margin-top:100px}.study-quiz-result[hidden]{display:none}
.study-quiz-result h2{font-size:1.5rem}.study-quiz-result ol{padding-left:24px}.study-quiz-result li{padding:18px 0;border-top:1px solid var(--line)}.study-quiz-result li p{margin:10px 0}
.study-quiz-result .text-link{margin-left:12px}.route-pair{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.route-feature{min-width:0}
.topic-bridge{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}.topic-bridge p{margin:0;max-width:700px}.topic-bridge a{flex-shrink:0}
@media(max-width:1080px){.spirit-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.context-roles{grid-template-columns:repeat(2,minmax(0,1fr))}.route-pair{grid-template-columns:repeat(2,minmax(0,1fr))}.project-intro{gap:28px}.task-stations{gap:18px}}
@media(max-width:700px){.project-intro{grid-template-columns:minmax(0,1fr);gap:20px;margin-top:24px}.scope-panel{padding:22px}.project-section{margin-top:36px}.development-timeline>li{grid-template-columns:minmax(0,1fr);gap:10px;padding:24px 0}.development-date time{font-size:1.125rem}.development-timeline h3{font-size:1.25rem}.spirit-grid{grid-template-columns:minmax(0,1fr);gap:20px}.spirit-card{padding:22px}.project-continue{display:block;padding:22px}.project-continue>.button{margin-top:18px}.outcome-item{grid-template-columns:32px minmax(0,1fr);gap:16px}.outcome-number{font-size:1.375rem}.delivery-spec dl{grid-template-columns:minmax(0,1fr);gap:8px}.delivery-spec dd{margin-bottom:14px}.audience-tabs{display:grid;grid-template-columns:minmax(0,1fr);gap:8px}.audience-tabs button{text-align:left}.task-route,.study-card,.study-quiz-result{padding:22px}.task-stations{grid-template-columns:minmax(0,1fr);gap:20px}.study-card-pair{grid-template-columns:minmax(0,1fr);gap:0}.quiz-options{grid-template-columns:minmax(0,1fr);gap:10px}.study-quiz legend{font-size:1rem}.study-quiz-result .text-link{display:flex;margin-left:0}.route-pair{grid-template-columns:minmax(0,1fr);gap:0}.topic-bridge{display:block}.topic-bridge a{margin-top:14px}.section-tabs[aria-label="研学资料分类"]{flex-wrap:wrap;gap:0 20px}.section-tabs[aria-label="研学资料分类"] a{min-height:46px;font-size:.875rem}}
@media(prefers-reduced-motion:reduce){.study-quiz-result{scroll-behavior:auto}}
@media(max-width:700px){.visit-bar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 14px;align-items:center}.visit-bar>a:first-child{min-width:0;flex-basis:auto}.visit-bar>span{justify-self:end}.visit-bar .visit-continue{grid-column:1;min-width:0;margin-left:0;font-size:.875rem}.visit-bar>button{grid-column:2;white-space:nowrap}.context-roles{grid-template-columns:minmax(0,1fr);gap:20px}}
.visit-bar{flex-wrap:wrap;gap:8px 16px}.visit-bar>span:first-child{font-weight:600;color:var(--ink);white-space:normal;min-width:0}.visit-bar>span:nth-child(2){font-size:.8125rem}.visit-bar>a:not(.visit-continue){font-size:.8125rem;color:var(--accent-dark);white-space:nowrap}

/* Match the gallery's quiet materials while keeping learning forms readable. */
.learning-page .page-outline { background:transparent; padding:8px 0 15px; border-left:0; border-bottom:1px solid var(--line); margin:16px 0 30px; font-size:.8125rem; }
.learning-page .page-outline > span { font-size:.75rem; }
.learning-page .task-route { background:#e9ede6; border-color:#cdd6ca; border-top:2px solid #ab8c64; }
.learning-page .study-card { background:#fffefa; border-color:#d7d9cc; border-top:3px solid #aa8860; box-shadow:0 6px 18px #263c3205; }
.learning-page .study-card input,.learning-page .study-card textarea,.learning-page .study-card select { background:#f6f6f0; border-color:#bac6bc; }
.learning-page .task-stations li > span { color:#805b38; }
.learning-page .audience-tabs button { border-color:#b9c8bd; }
.learning-page .audience-tabs button[aria-pressed='true'] { background:#173742; border-color:#173742; }
@media(max-width:700px){.visit-bar{gap:6px 12px}.visit-bar>span:first-child{grid-column:1/-1;justify-self:start}.visit-bar>span:nth-child(2){grid-column:1/-1;justify-self:start}.visit-bar .visit-continue{grid-column:1/-1;line-height:1.6;min-height:30px}.visit-bar>a:not(.visit-continue){grid-column:1;justify-self:start}.visit-bar>button{grid-column:2;grid-row:4;justify-self:end}}
@media(max-width:700px){.visit-bar.visit-final-study .visit-continue{grid-column:1;grid-row:3}.visit-bar.visit-final-study>button{grid-row:3}}

/* Shared teaching resources and route-specific workbooks. */
.teaching-tools{margin:40px 0;padding:28px 0;border-block:1px solid var(--line)}.teaching-tools>p{max-width:850px}.teaching-tools-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px}.teaching-tools-grid>a{display:block;padding:22px;border:1px solid var(--line);background:#fff;min-width:0}.teaching-tools-grid strong{display:block;color:var(--ink);margin-bottom:10px}.teaching-tools-grid span{display:block;color:var(--muted);font-size:.9375rem}.teaching-tools-grid>a:hover{border-color:var(--teal);background:#edf1ed}#task-form-panel>h3{font-size:1.35rem;margin-top:24px}.study-card-citation{overflow-wrap:anywhere}.study-card textarea{line-height:1.8}@media(max-width:700px){.teaching-tools-grid{grid-template-columns:minmax(0,1fr)}.teaching-tools{margin:28px 0}.study-card select{min-width:0;width:100%}}

.study-self-check{border:0;border-block:1px solid var(--line);padding:20px 0 12px;margin:24px 0;min-width:0}.study-self-check legend{padding:0 8px 0 0;font-weight:600;font-size:1rem}.study-card .study-self-check label{display:flex;gap:12px;align-items:flex-start;font-weight:400;margin:10px 0 16px;cursor:pointer}.study-card .study-self-check input{display:inline-block;width:19px;height:19px;padding:0;margin:5px 0 0;accent-color:var(--teal);flex:none}.teacher-intro>p{max-width:850px}.teacher-intro h2{font:600 clamp(1.65rem,3vw,2.1rem)/1.6 var(--serif)}.teacher-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px 30px;padding-left:24px;margin:26px 0 32px}.teacher-steps li{padding-left:4px;color:var(--teal)}.teacher-form{margin:26px 0;max-width:1100px}.teacher-form #teacher-assignment{font-size:.9375rem;line-height:1.8;min-height:360px;background:#edf0e8;white-space:pre-wrap}.teacher-form #teacher-status{margin:18px 0 0;min-height:28px}.teacher-form .study-card-pair{grid-template-columns:1fr 1.5fr}@media(max-width:700px){.teacher-steps{grid-template-columns:minmax(0,1fr);gap:12px}.teacher-form .study-card-pair{grid-template-columns:minmax(0,1fr)}.study-card-actions>.button{max-width:100%;white-space:normal;text-align:center}.teacher-form #teacher-assignment{min-height:420px}}
/* A visit starts with a question; writing tools stay in the optional teaching drawer. */
.learning-page.task-page.shell{padding-top:24px}
.learning-page.task-page .pagehead{padding:0;margin-bottom:14px}
.learning-page.task-page .pagehead h1{font-size:clamp(1.75rem,2.5vw,2.4rem)}
.learning-page.task-page .section-tabs{margin-bottom:22px}
.task-opening{scroll-margin-top:100px}
.task-opening-head{display:flex;align-items:center;gap:12px;margin:0 0 18px}
.task-opening-head p{margin:0;color:var(--muted);font-size:.875rem}
.task-stage-number{flex:none;display:inline-grid;place-items:center;width:32px;height:32px;border:1px solid #c7d3ca;border-radius:50%;color:var(--accent-dark);font-size:.75rem;font-weight:600;font-variant-numeric:tabular-nums}
.task-opening .audience-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-width:780px;margin:0 0 18px;gap:8px}
.task-opening .audience-tabs button{min-width:0;padding:12px 18px;text-align:left;border-radius:8px;background:#fffefa;border-color:#c7d3ca}
.task-opening .audience-tabs button[aria-pressed='true']{background:var(--ink);color:#fffefa;border-color:var(--ink)}
.task-opening .audience-tabs button:not([aria-pressed='true']):hover{background:#e9eeea;border-color:#7d9b92}
.task-opening .audience-tabs span{display:block;font-weight:600;font-size:1rem}
.task-opening .audience-tabs small{display:block;font-size:.75rem;margin-top:3px;opacity:.8}
.task-page .task-next-steps{display:grid;gap:12px;margin:24px 0}
.task-page .task-route{padding:0;background:transparent;border:0}
.task-page .task-fold{margin:0;padding:0;border:1px solid var(--line);border-radius:12px;background:#fffefa;overflow:clip}
.task-page .task-fold>summary{display:flex;align-items:center;gap:18px;padding:22px 24px;min-height:96px;list-style:none;cursor:pointer}
.task-page .task-fold>summary::-webkit-details-marker{display:none}
.task-page .task-fold>summary::after{content:none}
.task-page .task-fold>summary:hover{background:#f0f3ed}
.task-page .task-fold>summary>div{min-width:0;flex:1}
.task-page .task-fold h2{display:block;margin:0;font:600 1.125rem/1.6 var(--sans,sans-serif);scroll-margin-top:110px}
.task-page .task-fold>summary p{font-size:.8125rem;color:var(--muted);line-height:1.7;margin:4px 0 0}
.task-page .task-fold-toggle{font-size:1.4rem;color:var(--teal);flex:none;line-height:1}
.task-page .task-fold[open]>.task-fold-body{border-top:1px solid var(--line)}
.task-page .task-fold[open]>summary .task-fold-toggle{transform:rotate(45deg)}
.task-page .task-fold-body{padding:24px;margin:0}
.task-page .task-stations{margin:0;gap:24px}
.task-page .task-stations li{grid-template-columns:24px minmax(0,1fr);gap:10px}
.task-page .task-stations h3{font-size:1rem;line-height:1.6;margin:0 0 10px}
.task-page .task-stations p{font-size:.875rem;line-height:1.85}
.task-page .task-stations .text-link{font-size:.875rem}
.task-purpose{border-top:1px solid var(--line);padding-top:14px;margin-top:22px}
.task-purpose summary{cursor:pointer;color:var(--accent-dark);min-height:44px;font-size:.875rem}
.task-purpose p{max-width:900px;font-size:.875rem}
.task-page .task-extras{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:28px 0 12px;align-items:start}
.task-page .task-resources{border-top:1px solid var(--line);padding:8px 0 0;min-width:0}
.task-page .task-resources>summary{cursor:pointer;display:grid;grid-template-columns:1fr 20px;gap:4px 12px;padding:12px 0;min-height:72px;list-style:none}
.task-page .task-resources>summary::-webkit-details-marker{display:none}
.task-page .task-resources>summary::after{content:'＋';grid-column:2;grid-row:1/3;align-self:center;color:var(--teal);font-size:1.2rem}
.task-page .task-resources[open]>summary::after{content:'−'}
.task-page .task-resources>summary>span{font-size:.9375rem;font-weight:600}
.task-page .task-resources>summary>small{font-size:.75rem;color:var(--muted);line-height:1.7}
.task-page .task-resources-body{padding:12px 0 8px;font-size:.875rem}
.task-page .task-resources .teaching-tools-grid{grid-template-columns:1fr;gap:10px;margin-top:16px}
.task-page .task-resources .teaching-tools-grid>a{padding:16px;border-radius:8px;background:#fffefa}
.task-page .task-resources .teaching-tools-grid strong{margin-bottom:4px}
.task-page .task-resources .teaching-tools-grid span{font-size:.8125rem}
.task-page .study-discussions>details{padding:14px 0;border-top:1px solid var(--line)}
.task-page .study-discussions>details:first-child{border-top:0}
.task-page .study-discussions>details>summary{line-height:1.8;cursor:pointer}
.task-page .study-card{padding:24px;border-radius:12px;background:#f8f8f2}
.task-page .study-card input,.task-page .study-card select,.task-page .study-card textarea{border-radius:8px;background:#fffefa}
.task-page .study-example{margin:16px 0}
.task-page .study-card-actions .button{border-radius:8px}
.task-page>.notebook-toolbar{margin-top:20px;padding:10px 0;border-bottom:1px solid var(--line)}
@media(max-width:700px){
  .learning-page.task-page.shell{padding-top:16px}
  .learning-page.task-page .pagehead{margin-bottom:8px}
  .learning-page.task-page .pagehead .eyebrow,.learning-page.task-page .pagehead p{display:none}
  .learning-page.task-page .pagehead h1{font-size:1.65rem;line-height:1.45;margin-bottom:4px}
  .learning-page.task-page .section-tabs{gap:0 16px;margin-bottom:14px}
  .learning-page.task-page .section-tabs a{font-size:.8125rem;min-height:40px}
  .task-opening-head{gap:9px;margin-bottom:12px}
  .task-opening-head p{font-size:.8125rem}
  .task-stage-number{width:26px;height:26px;font-size:.6875rem}
  .task-opening .audience-tabs{gap:6px;margin-bottom:12px}
  .task-opening .audience-tabs button{padding:10px 7px;text-align:center}
  .task-opening .audience-tabs span{font-size:.875rem}
  .task-opening .audience-tabs small{font-size:.625rem;line-height:1.5}
  .task-page .task-next-steps{margin:18px 0;gap:10px}
  .task-page .task-fold>summary{gap:12px;padding:17px 16px;min-height:86px}
  .task-page .task-fold h2{font-size:1rem;scroll-margin-top:94px}
  .task-page .task-fold>summary p{font-size:.75rem}
  .task-page .task-fold-body{padding:18px 16px}
  .task-page .task-stations{grid-template-columns:1fr;gap:20px}
  .task-page .task-stations li+li{border-top:1px solid var(--line);padding-top:18px}
  .task-page .task-stations h3{margin-bottom:5px}
  .task-page .task-extras{grid-template-columns:1fr;gap:4px;margin-top:24px}
  .task-page .task-resources>summary{min-height:68px}
  .task-page .study-card{padding:18px 14px}
  .task-page .study-card-pair{grid-template-columns:1fr;gap:0}
  .task-page .study-card label{font-size:.875rem}
  .task-page .study-card-actions{gap:10px}
  .task-page .study-card-actions>.button{width:100%}
}

/* Optional study tools are a quiet page-end utility, outside the visit sequence. */
.task-page .task-optional-tools{margin:30px 0 12px;padding-top:10px;border-top:1px solid var(--line)}
.task-page .task-optional-tools>summary{display:grid;grid-template-columns:1fr 20px;gap:4px 14px;min-height:66px;padding:12px 0;list-style:none;cursor:pointer;color:var(--muted)}
.task-page .task-optional-tools>summary::-webkit-details-marker{display:none}
.task-page .task-optional-tools>summary>span{font-size:.875rem;font-weight:500}
.task-page .task-optional-tools>summary>small{font-size:.75rem;font-weight:400;line-height:1.7}
.task-page .task-optional-tools>summary::after{content:'＋';grid-column:2;grid-row:1/3;align-self:center;font-size:1.2rem;color:var(--teal)}
.task-page .task-optional-tools[open]>summary::after{content:'−'}
.task-page .task-optional-body{padding:14px 0 0}
.task-page .task-optional-links{display:flex;flex-wrap:wrap;gap:8px 24px;margin:0 0 16px;font-size:.8125rem}
.task-page .task-record>summary{background:transparent;min-height:78px}
.task-page .task-record h2{font-size:1rem}
.task-page .task-next-steps{margin-bottom:0}
.task-page .task-route-fold>summary{min-height:82px}
.task-page .task-route-fold h2{font-size:1rem}
.task-page .task-opening-head{margin-bottom:12px}
@media(max-width:700px){
  .task-page .task-optional-tools{margin-top:22px}
  .task-page .task-optional-tools>summary{min-height:60px}
  .task-page .task-optional-tools>summary>span{font-size:.8125rem}
  .task-page .task-optional-tools>summary>small{font-size:.6875rem}
  .task-page .task-optional-links{gap:4px 16px;font-size:.75rem}
  .task-page .task-route-fold>summary{min-height:76px}
}

/* 07. museum-search.css */
/* Museum search follows the existing paper, ink and red exhibition palette. */
.museum-search { max-width: 1220px; }
.museum-search .pagehead { padding-bottom: 0; margin-bottom: 18px; }
.museum-search .pagehead .eyebrow { display: none; }
.museum-search .pagehead h1 { font-size: clamp(1.75rem,2.5vw,2.2rem); }
.museum-search .pagehead p { max-width: 900px; font-size: .875rem; }
.museum-search-form { max-width: 940px; margin: 0 0 14px; }
.museum-search-form label { display: block; margin-bottom: 9px; color: var(--ink, #132b36); font-weight: 600; }
.museum-search-input-row { display: flex; gap: 12px; align-items: stretch; }
.museum-search-input-row input { min-width: 0; flex: 1; padding: 12px 16px; border: 1px solid var(--line, #cdd2ce); border-radius: 3px; background: var(--surface, #fff); color: var(--ink, #132b36); font-size: 1rem; }
.museum-search-input-row input::placeholder { color: var(--muted, #59666a); }
.museum-search-input-row .button { flex-shrink: 0; }
.museum-search-help { margin: 9px 0 0; font-size: .875rem; color: var(--muted, #59666a); }
.museum-search-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.museum-search-filters button { min-height: 44px; padding: 8px 18px; border: 1px solid var(--line, #cdd2ce); border-radius: 3px; background: transparent; color: var(--ink, #132b36); font-size: .9375rem; }
.museum-search-filters button:hover { background: #e9eeeb; }
.museum-search-filters button[aria-pressed="true"] { background: var(--ink, #132b36); color: #fff; border-color: var(--ink, #132b36); }
.museum-search-examples { display: flex; flex-wrap: wrap; gap: 0 16px; align-items: center; margin: 6px 0 12px; font-size: .8125rem; color: var(--muted, #59666a); }
.museum-search-examples button { min-height: 44px; padding: 4px 0; color: var(--teal, #246a6c); background: transparent; text-decoration: underline; text-underline-offset: 4px; }
.museum-search-status { margin: 0 0 18px; padding-bottom: 12px; border-bottom: 1px solid var(--line, #cdd2ce); font-size: .875rem; color: var(--muted, #59666a); }
.museum-search-group { margin-bottom: 34px; }
.museum-search-group > h2, .museum-search-recommend > h2 { font-size: 1.375rem; margin-bottom: 18px; }
.museum-search-group > h2 span { display: inline-block; margin-left: 13px; font-size: .875rem; font-weight: 400; letter-spacing: 0; color: var(--muted, #59666a); }
.museum-search-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 28px; }
.museum-search-result { min-width: 0; display: flex; flex-direction: column; align-items: flex-start; padding: 23px 25px; border: 1px solid var(--line, #cdd2ce); border-radius: 3px; background: var(--surface, #fff); overflow-wrap: anywhere; }
.museum-search-kind { font-size: .8125rem; color: var(--teal, #246a6c); margin-bottom: 9px; }
.museum-search-result h3 { font-size: 1.1875rem; margin: 0 0 12px; line-height: 1.55; }
.museum-search-result p { margin: 0 0 16px; font-size: .9375rem; line-height: 1.9; }
.museum-search-result mark { background: #f4e0b7; color: var(--ink, #132b36); padding: 0 .06em; border-radius: 1px; }
.museum-search-open { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; padding: 4px 0; margin-top: auto; border: 0; border-bottom: 1px solid #ad3e3066; background: transparent; color: var(--accent, #ad3e30); font-size: .9375rem; }
.museum-search-open:hover { color: var(--accent-dark, #903026); border-bottom-color: currentColor; }
.museum-search-empty { padding: 26px 0 10px; max-width: 680px; }
.museum-search-empty h2 { font-size: 1.5rem; }
.museum-search :is(a, button, input):focus-visible { outline: 3px solid #c1842b; outline-offset: 4px; }
@media (max-width: 680px) {
  .museum-search-input-row { gap: 8px; }
  .museum-search-input-row input { padding: 11px 12px; }
  .museum-search-input-row .button { padding-inline: 12px; }
  .museum-search-filters { gap: 7px; }
  .museum-search-filters button { padding-inline: 13px; }
  .museum-search-grid { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .museum-search-result { padding: 20px; }
  .museum-search-group { margin-bottom: 28px; }
}

/* 08. signal-exhibit.css */
/* One scoped teaching exhibit: location and responsibility, not an engineering topology. */
.signal-exhibit {
  --signal-night: #102b3d;
  --signal-light: #e8f0e9;
  --signal-muted: #afc3c8;
  --signal-teal: #8bd1c3;
  --signal-copper: #e2bb82;
  min-width: 0;
  padding: 28px;
  color: var(--signal-light);
  background: var(--signal-night);
  border: 1px solid #315063;
  border-radius: 5px;
  overflow: hidden;
}
.signal-stage-heading { padding: 2px 2px 0; display:flex; align-items:center; justify-content:space-between; gap:14px; }
.signal-stage-hint { font-size:.6875rem; color:var(--signal-muted); }
.signal-exhibit .signal-kicker { color: var(--signal-copper); font-size: .75rem; letter-spacing: .12em; }
.signal-exhibit .signal-stage-heading h2 { color: var(--signal-light); font-family: var(--serif, serif); font-size: clamp(1.55rem, 2.3vw, 2rem); line-height: 1.5; margin: 13px 0 10px; font-weight: 500; letter-spacing: -.03em; }
.signal-exhibit .signal-stage-heading p { color: var(--signal-muted); font-size: .875rem; line-height: 1.7; margin: 0; }
.signal-canvas { margin: 10px -12px 12px; position: relative; }
.signal-map { display: block; width: 100%; height: auto; max-height:300px; overflow: visible; }
.signal-map text { font-family: var(--sans, sans-serif); font-size: 20px; font-weight: 600; letter-spacing: .015em; fill: currentColor; }
.signal-map .signal-zone-labels { color: #809eab; }
.signal-map .signal-zone-labels text { font-size: 14px; font-weight: 400; letter-spacing: .12em; }
.signal-part { color: #afc6ce; }
.signal-device-body { fill: #1a3c50; stroke: #71939f; stroke-width: 1.7; }
.signal-halo { fill: transparent; stroke: transparent; stroke-width: 1; }
.signal-information-path { stroke: #526f7e; stroke-width: 2; stroke-dasharray: 6 6; opacity: .65; }
.signal-radio-waves { stroke: #688998; }
.signal-device-dot, .signal-position-dot { fill: currentColor; }
.signal-map .signal-label-cn { font-size: 18px; font-weight: 400; }
.signal-map .signal-optional-label { font-size: 14px; font-weight: 400; }
.signal-optional-device { stroke-dasharray: 5 4; }
.signal-exhibit[data-selected="0"] .signal-part-rbc,
.signal-exhibit[data-selected="1"] .signal-part-balise { color: var(--signal-copper); }
.signal-exhibit[data-selected="2"] .signal-part-atp,
.signal-exhibit[data-selected="3"] .signal-part-ato { color: var(--signal-teal); }
.signal-exhibit[data-selected="0"] .signal-part-rbc .signal-halo,
.signal-exhibit[data-selected="1"] .signal-part-balise .signal-halo { fill: #e2bb8210; stroke: #e2bb8240; }
.signal-exhibit[data-selected="2"] .signal-part-atp .signal-halo,
.signal-exhibit[data-selected="3"] .signal-part-ato .signal-halo { fill: #8bd1c32c; stroke: #8bd1c399; }
.signal-exhibit[data-selected="0"] .signal-part-rbc .signal-device-body,
.signal-exhibit[data-selected="1"] .signal-part-balise .signal-device-body { fill: #4c4437; stroke: var(--signal-copper); stroke-width: 2; }
.signal-exhibit[data-selected="2"] .signal-part-atp .signal-device-body,
.signal-exhibit[data-selected="3"] .signal-part-ato .signal-device-body { fill: #244e51; stroke: var(--signal-teal); stroke-width: 2; }
.signal-exhibit[data-selected="0"] .signal-rbc-link,
.signal-exhibit[data-selected="1"] .signal-balise-link { stroke: var(--signal-copper); stroke-width: 3; opacity: 1; }
.signal-exhibit[data-selected="0"] .signal-radio-waves { stroke: var(--signal-copper); }
.signal-device-buttons { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.signal-exhibit .signal-device-buttons button { display: flex; min-width: 0; align-items: center; gap: 10px; padding: 13px 12px; min-height: 75px; color: var(--signal-light); background: #ffffff03; border: 1px solid #426071; border-radius: 3px; text-align: left; font: inherit; cursor: pointer; }
.signal-exhibit .signal-device-buttons button:hover { border-color: #a4bfca; background: #ffffff07; }
.signal-exhibit .signal-device-buttons button:focus-visible { outline: 3px solid #f4e0bb; outline-offset: 3px; }
.signal-button-number { align-self: flex-start; padding-top: 1px; color: #8ba7b6; font-size: .6875rem; font-variant-numeric: tabular-nums; }
.signal-button-copy { min-width: 0; flex: 1; }
.signal-button-copy strong { display: block; font-size: .9375rem; font-weight: 500; line-height: 1.5; }
.signal-button-copy small { display: block; margin-top: 4px; color: var(--signal-muted); font-size: .6875rem; line-height: 1.65; }
.signal-button-arrow { color: #8ba7b6; font-size: .875rem; flex: 0 0 auto; }
.signal-exhibit .signal-device-buttons button[aria-pressed="true"] { border-color: var(--signal-copper); background: #e2bb820f; }
.signal-exhibit .signal-device-buttons button[aria-pressed="true"] .signal-button-number,
.signal-exhibit .signal-device-buttons button[aria-pressed="true"] .signal-button-arrow { color: var(--signal-copper); }
.signal-exhibit[data-selected="2"] .signal-device-buttons button[aria-pressed="true"],
.signal-exhibit[data-selected="3"] .signal-device-buttons button[aria-pressed="true"] { border-color: var(--signal-teal); background: #8bd1c30c; }
.signal-exhibit[data-selected="2"] .signal-device-buttons button[aria-pressed="true"] .signal-button-number,
.signal-exhibit[data-selected="2"] .signal-device-buttons button[aria-pressed="true"] .signal-button-arrow,
.signal-exhibit[data-selected="3"] .signal-device-buttons button[aria-pressed="true"] .signal-button-number,
.signal-exhibit[data-selected="3"] .signal-device-buttons button[aria-pressed="true"] .signal-button-arrow { color: var(--signal-teal); }
.signal-exhibit .signal-current { display: flex; align-items: flex-start; gap: 9px; margin: 15px 0 0; min-height: 2em; font-size: .8125rem; line-height: 1.8; color: #d9e5e4; }
.signal-current-dot { display: block; flex: 0 0 5px; height: 5px; margin-top: 9px; background: var(--signal-copper); border-radius: 50%; }
.signal-exhibit[data-selected="2"] .signal-current-dot,
.signal-exhibit[data-selected="3"] .signal-current-dot { background: var(--signal-teal); }
.signal-exhibit .signal-stage-note { border-top: 1px solid #3a5666; margin: 12px 0 0; padding-top: 12px; color: #9cb5c0; font-size: .6875rem; line-height: 1.8; }
@media (min-width: 901px) { .signal-exhibit { align-self: start; } }
@media (min-width: 1100px) { .signal-device-buttons { grid-template-columns:repeat(4,minmax(0,1fr)); } .signal-exhibit .signal-device-buttons button { display:block; padding:11px 12px; } .signal-button-number { display:none; } .signal-button-copy strong { font-size:.8125rem; } .signal-button-arrow { display:none; } }
@media (max-width: 440px) {
  .signal-exhibit { padding: 21px 16px 18px; }
  .signal-exhibit .signal-stage-heading h2 { font-size: 1.55rem; }
  .signal-canvas { margin: 8px -13px 14px; }
  .signal-scene-detail { display: none; }
  .signal-map .signal-zone-labels text { font-size: 20px; letter-spacing: 0; }
  .signal-map .signal-part text { font-size: 24px; }
  .signal-map .signal-part .signal-label-cn { font-size: 23px; }
  .signal-device-buttons { gap: 8px; }
  .signal-exhibit .signal-device-buttons button { padding: 11px 9px; gap: 6px; min-height: 79px; }
  .signal-button-copy strong { font-size: .875rem; }
  .signal-button-copy small { font-size: .6875rem; }
  .signal-button-arrow { display: none; }
  .signal-exhibit .signal-current { min-height: 0; margin-top: 15px; }
}
@media (prefers-reduced-motion: no-preference) {
  .signal-halo, .signal-device-body, .signal-information-path, .signal-radio-waves { transition: fill .2s ease, stroke .2s ease, opacity .2s ease; }
  .signal-device-buttons button { transition: border-color .2s ease, background-color .2s ease; }
}
@media (forced-colors: active) {
  .signal-device-body, .signal-information-path { stroke: CanvasText; }
  .signal-exhibit .signal-device-buttons button[aria-pressed="true"] { outline: 2px solid Highlight; outline-offset: -4px; }
}

/* 09. project-research.css */
.research-intro { display:grid; grid-template-columns:1.6fr 1fr; gap:40px; padding:32px 0; }
.research-intro h2 { max-width:760px; font-family:var(--serif); font-size:clamp(25px,3vw,38px); line-height:1.55; }
.research-intro aside { border-left:2px solid var(--accent); padding:8px 0 8px 24px; }
.research-intro p,.research-section p,.research-method li { line-height:1.9; }
.research-section { margin:54px 0; }
.research-cases,.research-pair,.research-bounds { display:grid; grid-template-columns:1fr 1fr; gap:32px; }
.research-cases article { padding:30px; background:var(--surface); border-top:3px solid var(--accent); }
.research-cases h3 { font-size:24px; margin:14px 0 24px; }
.research-cases dl div,.research-finding dl div { margin:18px 0; }
.research-cases dt,.research-finding dt { color:var(--ink); font-weight:650; }
.research-cases dd,.research-finding dd { margin:6px 0 0; color:var(--muted); line-height:1.9; }
.research-comparison article { border-top:1px solid var(--line); padding:22px 0; }
.research-comparison article:last-child { border-bottom:1px solid var(--line); }
.research-comparison h3 { font-size:20px; margin:0 0 14px; }
.research-pair strong { display:block; color:var(--accent-dark); font-size:13px; margin-bottom:6px; }
.research-pair p { margin:0; }
.research-interpretation { padding:14px 20px; background:#e9ede7; margin-bottom:0; }
.research-interpretation strong { margin-right:16px; }
.research-bounds { margin-top:28px; }
.research-bounds ul,.research-method ul,.research-method ol { padding-left:24px; }
.research-bounds li { margin:10px 0; line-height:1.8; }
.research-finding { padding:30px 0; border-bottom:1px solid var(--line); }
.research-finding-title { display:flex; gap:20px; align-items:baseline; }
.research-finding-title span { color:var(--accent); font-family:Georgia,serif; font-size:32px; }
.research-finding-title h3 { margin:0; font-size:clamp(22px,2.3vw,29px); }
.research-claim { font-size:19px; color:var(--ink); }
.research-next article { border-left:2px solid var(--line); padding-left:22px; margin:26px 0; }
.research-next h3 { font-size:19px; }
.research-entry,.trial-entry { display:flex; justify-content:space-between; gap:26px; align-items:center; background:#e9ede7; padding:28px 32px; margin:30px 0; }
.research-entry h2,.trial-entry h2 { font-family:var(--serif); font-size:25px; margin:8px 0; }
.research-entry p,.trial-entry p { margin:0; line-height:1.8; max-width:760px; }
.research-entry .button,.trial-entry .button { flex-shrink:0; }
.delivery-version { margin:24px 0; padding:20px 0; border-block:1px solid var(--line); }
.delivery-version p { margin:4px 0 14px; }
@media(max-width:760px) {
 .research-intro,.research-cases,.research-pair,.research-bounds { grid-template-columns:1fr; gap:20px; }
 .research-cases article { padding:22px; }
 .research-entry,.trial-entry { flex-direction:column; align-items:flex-start; padding:24px; }
 .research-section { margin:38px 0; }
 .research-finding-title { gap:12px; }
}
@media print {
 body { background:#fff!important; }
 .research-print { max-width:none!important; padding:0!important; color:#111; background:#fff; }
 .research-print * { color:#111!important; box-shadow:none!important; }
 .research-print .no-print { display:none!important; }
 .research-print .research-intro { display:block; }
 .research-print .research-intro aside { border:0; padding:0; }
 .research-print .research-section { margin:0; break-before:page; }
 .research-print .research-cases { display:grid; grid-template-columns:1fr 1fr; gap:22px; }
 .research-print .research-cases article { padding:14px 0; }
 .research-print .research-finding,.research-print .research-cases article,.research-print .research-comparison article { break-inside:avoid; }
 .research-print .research-method { break-inside:auto; }
 .research-print .research-pair,.research-print .research-bounds { grid-template-columns:1fr 1fr; gap:18px; }
 .research-print h1 { font-size:24px; }
 .research-print h2 { font-size:21px; line-height:1.5; }
 .research-print h3 { font-size:16px; line-height:1.5; }
 .research-print h2,.research-print h3,.research-print .editorial-heading { break-after:avoid; }
 .research-print .research-intro { padding:12px 0; }
 .research-print .research-finding { padding:12px 0; }
 .research-print .research-finding dl div { display:grid; grid-template-columns:60px 1fr; gap:10px; margin:8px 0; }
 .research-print .research-finding dt { font-size:12px; }
 .research-print .research-finding dd { margin:0; }
 .research-print .research-finding-title h3 { font-size:16px; }
 .research-print .research-finding-title span { font-size:24px; }
 .research-print .research-claim { font-size:14px; }
 .research-print p,.research-print li,.research-print dd { font-size:13px; line-height:1.65; }
 .research-print .source-links { font-size:11px; margin-top:8px; }
 .research-print .research-next article { margin:14px 0; }
 .research-print .bibliography h2 { margin-top:24px; }
 .research-print a { text-decoration:none; }
 @page { size:A4; margin:16mm; }
}

.research-worked>ol{counter-reset:analysis;list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.research-worked>ol>li{background:#fff;border:1px solid var(--line);padding:22px;min-width:0}.research-worked h3{font-size:1.125rem}.research-worked>ol>li h3:before{counter-increment:analysis;content:counter(analysis,decimal-leading-zero) " / ";color:var(--accent)}@media(max-width:700px){.research-worked>ol{grid-template-columns:minmax(0,1fr)}}@media print{.research-worked>ol>li{break-inside:avoid}.research-worked .text-link{display:none}}

/* 10. museum-people.css */
.people-intro{margin:2rem 0 3rem}.people-intro>p{max-width:54rem;font-size:1.12rem;line-height:1.85}.people-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;margin-top:1.5rem}.people-card{display:flex;flex-direction:column;padding:1.5rem;border:1px solid #c8d2d1;border-top:3px solid #a06c3d;border-radius:4px;text-decoration:none!important;color:#193941;background:#fff;transition:background .16s,border-color .16s}.people-card:hover{background:#f0f5f4;border-color:#68817f}.people-number{font-size:.88rem;color:#6c5a49;letter-spacing:.04em}.people-card>strong{font-size:1.8rem;margin:.8rem 0 .3rem;line-height:1.3}.people-field{font-size:.94rem;line-height:1.65}.people-card p{font-size:1rem;line-height:1.8;flex:1;margin:1rem 0}.people-card-link{font-size:.9rem;font-weight:600}.people-profile{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:3rem;padding:2.8rem 0;border-top:1px solid #cad3d1;scroll-margin-top:7rem}.people-profile h2{font-size:2rem;margin:.7rem 0}.people-profile header>p{font-size:.95rem;color:#596e70;line-height:1.8}.people-profile h3{font-size:1.25rem;line-height:1.65;margin-top:1.5rem}.people-profile-body>p{line-height:1.95;margin-top:0}.people-contribution{font-size:1.12rem}.people-boundary{font-size:.94rem;color:#566a6d;margin-top:1rem!important}.people-profile .content-fold{margin-top:1.4rem}.people-reading{padding:2rem;background:#eaf0ef;margin:1rem 0 3rem}.people-reading h2{margin-top:0}.people-reading p{line-height:1.8}.people-comparison{margin:2.5rem 0 3rem;scroll-margin-top:7rem}.people-comparison>h2{font-size:1.8rem;line-height:1.5}.people-comparison>p{line-height:1.85;max-width:66rem}.people-comparison-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.4rem;margin:1.6rem 0}.people-comparison-grid>article{padding:1.6rem;background:#fff;border:1px solid #c8d2d1}.people-comparison-grid h3{margin:0 0 1rem;font-size:1.25rem}.people-comparison-grid p{line-height:1.8}.people-comparison-grid strong{display:block;font-size:.88rem;color:#5b7477;margin-bottom:.3rem}.people-synthesis{padding:1rem 0;border-top:1px solid #c8d2d1}.people-home{padding:4.5rem 0}.people-home-heading{display:flex;justify-content:space-between;gap:2rem;align-items:end}.people-home-heading h2{font-size:2.6rem;line-height:1.4;margin:1rem 0}.people-home-heading p{line-height:1.8}.people-home .people-card{background:rgba(255,255,255,.06);border-color:#607578;color:#fff;border-top-color:#d8ae80}.people-home .people-card:hover{background:rgba(255,255,255,.12)}.people-home .people-number{color:#e0bc97}.people-home .people-field,.people-home .people-card p{color:#e0e9e8}.people-home .text-link{color:#f0d2ac}.people-overview{margin:3rem 0}.people-overview>p{line-height:1.8}.people-print{max-width:1100px;margin:0 auto;padding:2rem}.people-print-header{margin:2rem 0}.people-print-header h1{font-size:2.2rem;line-height:1.4}.people-print nav{display:flex;flex-wrap:wrap;gap:1rem}.people-print-sources{overflow-wrap:anywhere;line-height:1.8}.people-print-sources li{margin:1rem 0}.people-print .people-profiles{margin-top:3rem}.people-card:focus-visible{outline:3px solid #bb804d;outline-offset:4px}
@media(max-width:1050px){.people-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.people-profile{gap:2rem}.people-home-heading{align-items:start}.people-home-heading h2{font-size:2.2rem}}
@media(max-width:640px){.people-cards{gap:.7rem}.people-card{padding:1rem}.people-card>strong{font-size:1.6rem}.people-profile{grid-template-columns:1fr;gap:.7rem;padding:2rem 0}.people-profile h3{margin:.7rem 0}.people-profile h2{font-size:1.8rem}.people-comparison-grid{grid-template-columns:1fr}.people-home-heading{display:block}.people-home{padding:3rem 0}.people-home-heading h2{font-size:1.95rem}.people-reading{padding:1.2rem}.people-print{padding:1rem}.people-comparison>h2{font-size:1.55rem}}
@media(max-width:360px){.people-cards{grid-template-columns:1fr}.people-card p{margin:.7rem 0}}
@media print{.people-print{max-width:none;padding:0;font-size:10.5pt}.people-print nav,.people-print .people-cards,.people-print details,.people-print .actions,.people-print .people-reading{display:none}.people-profile{display:block;break-inside:avoid;padding:1rem 0}.people-profile h2{font-size:17pt}.people-profile h3{margin:.5rem 0;font-size:12pt}.people-profile-body>p{line-height:1.6}.people-comparison-grid{display:block}.people-comparison-grid>article{break-inside:avoid;margin:1rem 0}.people-print a{color:#000}.people-print-sources li{break-inside:avoid}.people-print-header h1{font-size:22pt}}
.museum-team.people-home{background:#102f38;color:#e5eeed}.people-home .people-home-heading h2{color:#fff}.people-home .people-home-heading p{color:#d5e3e1}.people-home .museum-section-number{color:#e0bc97}
.people-card-photo{display:block;height:190px;margin:1rem 0 .15rem;background:#edf0ed;border-radius:2px;overflow:hidden}.people-card-photo img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.people-home .people-card-photo{background:#dce5e2}.people-photo-sources{margin-top:1rem;font-size:.88rem;color:#586d70}.people-photo-sources summary{cursor:pointer;width:fit-content}.people-photo-sources ul{padding-left:1.25rem;line-height:1.85;margin:.65rem 0}.people-photo-sources a{color:#315b65;text-underline-offset:3px}
@media(max-width:640px){.people-card-photo{height:140px;margin-top:.8rem}.people-photo-sources{line-height:1.8}}
@media(max-width:360px){.people-card-photo{height:190px}}
@media print{.people-print .people-photo-sources{display:none}}

.people-event{margin:28px 0;padding:24px;background:#edf1ed;border-left:3px solid var(--teal,#406a64)}.people-event h3{margin:10px 0 20px}.people-event dl{margin:0}.people-event dl>div{margin-bottom:18px}.people-event dt{font-weight:600;margin-bottom:5px}.people-event dd{margin:0;line-height:1.9}.people-event .source-links{overflow-wrap:anywhere}@media(max-width:700px){.people-event{padding:20px 18px}}

/* 11. museum-startup-20261008-round2.css */
.museum-startup{color:#18313a;line-height:1.8}
.startup-fallback{max-width:1180px;margin:0 auto;padding:1.5rem clamp(1.25rem,4vw,3rem) 2.5rem}
.startup-reading-panel{border-top:1px solid #c3d0ce;padding-top:1rem}
.startup-reading-panel>summary{cursor:pointer;font-weight:600;list-style-position:inside}
.startup-reading-panel>summary span{display:inline-block;margin-left:.7rem;font-size:.8rem;font-weight:400;color:#52666c}
.startup-noscript{padding:.7rem 0;font-size:.9rem;color:#47636a}
html[data-startup-route="page"] #museum-startup>.museum-hero{display:none}
html[data-startup-route="page"] #museum-startup{min-height:55vh}
html[data-startup-route="page"] .startup-fallback{padding-top:clamp(2rem,8vh,5rem)}
.startup-needs-help .startup-fallback{padding-top:2rem}
.startup-needs-help .startup-reading-panel{margin-top:1.5rem}
#startup-status{font-size:.95rem;color:#47636a}#startup-retry{padding:.7rem 1rem;border:1px solid #254951;background:#183b46;color:#fff;border-radius:3px;font:inherit;cursor:pointer}
.startup-people{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;margin:2rem 0}
.startup-people a{display:block;padding:1.2rem;border:1px solid #c3d0ce;border-radius:4px;color:#234851;background:#f6f8f2;text-decoration:none}
.startup-people strong{display:block;font-size:1.3rem}.startup-people span{display:block;font-size:.88rem;margin-top:.4rem}
.startup-reading{display:flex;flex-wrap:wrap;gap:.6rem 1.5rem}.startup-reading a{color:#234851;text-underline-offset:4px}
.museum-startup a:focus-visible,.museum-startup button:focus-visible{outline:3px solid #a65a29;outline-offset:4px}
@media(max-width:680px){.startup-people{grid-template-columns:repeat(2,minmax(0,1fr))}.startup-reading-panel>summary span{display:block;margin-left:1.25rem}.startup-fallback{padding-bottom:2rem}}
@media(max-width:360px){.startup-people{grid-template-columns:1fr}.startup-people a{padding:.8rem 1rem}}

/* 12. museum-challenge.css */
/* One question, immediate feedback, then a clearly named next station. */
.challenge-card{display:grid;grid-template-columns:minmax(0,.88fr) minmax(0,1.12fr);gap:36px;margin:0;padding:30px;border:1px solid #c7d4cb;border-radius:12px;background:#f0f3eb;color:var(--ink,#16343f);overflow-wrap:anywhere}
.challenge-scene,.challenge-play{min-width:0}
.challenge-scene{align-self:start;padding-top:6px}
.challenge-kicker,.challenge-eyebrow{font-size:.75rem;letter-spacing:.06em;font-weight:600;color:#526f68}
.challenge-kicker{display:inline-block;padding:6px 10px;border:1px solid #c7d4cb;border-radius:6px;background:#fffefa}
.challenge-art{display:block;width:100%;height:auto;max-width:100%;margin:20px 0 0;font-family:"Microsoft YaHei","Noto Sans SC",sans-serif;overflow:visible}
.challenge-art-preview{margin:0}
.challenge-scene-note{margin:10px 0 0;text-align:center;font-size:.75rem;color:#5b726c}
.challenge-eyebrow{margin:0 0 10px;color:var(--accent-dark,#634327)}
.challenge-play h2{font:600 clamp(1.4rem,2.2vw,1.85rem)/1.5 var(--serif,serif);margin:0 0 12px;color:var(--ink,#16343f)}
.challenge-situation{font-size:.9375rem;line-height:1.8;margin:0 0 14px;max-width:650px}
.challenge-invitation{margin:0 0 12px;font-size:.8125rem;color:#546d65}
.challenge-choices{display:grid;gap:9px}
.challenge-choice{display:flex;align-items:flex-start;gap:12px;width:100%;min-width:0;text-align:left;font:inherit;font-size:.9375rem;line-height:1.65;min-height:52px;padding:12px 15px;border:1px solid #becdc3;border-radius:8px;background:#fffefa;color:var(--ink,#16343f);cursor:pointer;white-space:normal}
.challenge-letter{display:inline-grid;place-items:center;flex:0 0 25px;height:25px;border-radius:50%;background:#e8eee5;color:#466b63;font-size:.8125rem;font-weight:700;line-height:1}
.challenge-choice:hover{background:#e7eee1;border-color:#78998e}
.challenge-choice[aria-pressed=true]{background:var(--ink,#16343f);border-color:var(--ink,#16343f);color:#fffefa}
.challenge-choice[aria-pressed=true] .challenge-letter{background:#e5c190;color:#16343f}
.challenge-feedback{margin-top:16px;padding:16px 18px;border-left:3px solid #b78d5c;border-radius:0 8px 8px 0;background:#e3eade;line-height:1.8}
.challenge-feedback strong{display:block;color:#214d54;font-size:1rem}
.challenge-feedback p{margin:6px 0 0;font-size:.875rem}
.challenge-feedback .challenge-waiting{margin:0;color:#52695f;font-size:.8125rem}
.challenge-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:14px}
.challenge-continue{display:inline-flex;align-items:center;justify-content:center;background:var(--ink,#16343f);color:#fffefa;padding:12px 20px;border:1px solid var(--ink,#16343f);border-radius:8px;text-decoration:none;min-height:46px;line-height:1.6;font-size:.9375rem;font-weight:600}
.challenge-continue:hover{background:#28505b;border-color:#28505b;color:#fff}
.challenge-skip{color:#456b63;text-underline-offset:4px;line-height:1.7;font-size:.75rem;padding:7px 0;min-height:36px}
.challenge-skip[hidden],.challenge-card:has(.challenge-after:not([hidden])) .challenge-skip{display:none}
.challenge-after{margin-top:18px;padding-top:8px;border-top:1px solid #cad5c8}
.challenge-after[hidden]{display:none}
.challenge-evidence{margin:0;font-size:.8125rem;color:#42615e}
.challenge-evidence summary{cursor:pointer;padding:8px 0;min-height:44px;text-decoration:underline;text-underline-offset:4px}
.challenge-evidence p{margin:10px 0;line-height:1.85}
.challenge-sources a{display:inline-block;color:#275a62;padding:5px 8px;background:#fffefa;border:1px solid #c4d2c4;border-radius:6px;text-decoration:underline;text-underline-offset:3px;min-height:36px}
.challenge-keep{display:inline-block;border:0;background:transparent;color:#245e61;font:inherit;font-size:.8125rem;font-weight:600;min-height:44px;padding:10px 0;text-align:left;text-decoration:underline;text-underline-offset:4px;cursor:pointer;white-space:normal}
.challenge-keep-status{font-size:.8125rem;color:#356c61;line-height:1.8;margin:6px 0}
.challenge-keep-status:empty{display:none}
.challenge-card-link{display:inline-block;padding:8px 0;color:#376e69;font-size:.8125rem;text-underline-offset:4px;min-height:44px}
.challenge-choice:focus-visible,.challenge-keep:focus-visible,.challenge-continue:focus-visible,.challenge-skip:focus-visible,.challenge-evidence summary:focus-visible,.challenge-sources a:focus-visible,.challenge-card-link:focus-visible{outline:3px solid #277d81;outline-offset:4px}
.challenge-teen{background:#edf3ed}
.challenge-specialist{background:#f1f1e8}
@media(max-width:1080px){
  .challenge-card{gap:24px;padding:24px;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}
  .challenge-play h2{font-size:1.5rem}
}
@media(max-width:760px){
  .challenge-card{grid-template-columns:minmax(0,1fr);gap:10px;padding:18px;border-radius:12px}
  .challenge-scene{position:static;padding:0}
  .challenge-kicker,.challenge-scene-note,.challenge-eyebrow,.challenge-invitation{display:none}
  .challenge-art{max-width:250px;margin:0 auto}
  .challenge-art-preview{max-width:100%;margin:0}
  .challenge-play h2{font-size:1.3rem;margin-bottom:8px;line-height:1.45}
  .challenge-situation{font-size:.875rem;line-height:1.7;margin-bottom:12px}
  .challenge-choice{font-size:.875rem;padding:11px 12px;gap:9px;min-height:50px}
  .challenge-feedback{padding:13px 14px;margin-top:13px}
  .challenge-feedback p{font-size:.8125rem}
  .challenge-feedback strong{font-size:.9375rem}
  .challenge-actions{gap:5px;margin-top:12px}
  .challenge-continue{width:100%;padding:11px 14px;font-size:.875rem}
  .challenge-skip{display:block;flex-basis:100%;text-align:center;min-height:36px}
  .challenge-after{margin-top:14px}
}
@media(max-width:380px){
  .challenge-card{padding:14px;gap:8px}
  .challenge-art{max-width:210px}
  .challenge-play h2{font-size:1.2rem}
  .challenge-choice{padding:10px;font-size:.8125rem}
}
@media(prefers-reduced-motion:reduce){
  .challenge-card *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* Saving a guess is available for a class task, without interrupting the visit. */
.challenge-record-tools{font-size:.8125rem;margin-top:0;color:var(--muted,#55676c)}
.challenge-record-tools>summary{cursor:pointer;min-height:44px;padding:8px 0;font-size:.75rem;line-height:1.8}
.challenge-record-tools .challenge-keep{display:block;font-weight:400;font-size:.75rem;min-height:44px;padding:8px 0}
.challenge-record-tools .challenge-card-link{font-size:.75rem}
.challenge-record-tools .challenge-keep-status{font-size:.75rem}

/* 13. museum-guide.css */
.guide-home{padding-top:40px;padding-bottom:34px}.guide-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:24px}.guide-heading h2,.guide-page h2{font-size:clamp(1.5rem,2.3vw,2rem);line-height:1.55;margin:8px 0 0}.guide-path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.guide-path{display:flex;flex-direction:column;min-width:0;padding:25px 26px;background:#fff;border:1px solid var(--line);border-top:3px solid #a78458;border-radius:3px;text-decoration:none;color:var(--ink);transition:background .15s,border-color .15s}.guide-path:hover{background:#f2f5ef;border-color:#7d9690}.guide-path:focus-visible{outline:3px solid #407e79;outline-offset:4px}.guide-path-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:.75rem}.guide-path-meta b{font-size:.8rem;font-weight:400;white-space:nowrap}.guide-path h3{font-size:1.375rem;line-height:1.5;margin:22px 0 12px}.guide-path p{font-size:.9375rem;line-height:1.9;color:var(--muted);margin:0 0 20px}.guide-path-result{font-size:.8125rem;color:var(--teal);margin-top:auto;padding-top:8px}.guide-path-action{font-weight:600;font-size:.875rem;margin-top:24px;display:flex;align-items:center;justify-content:space-between;gap:12px}.guide-time-note{font-size:.8125rem;color:var(--muted);margin:16px 0 0}.guide-section{margin:38px 0 54px}.guide-section>p{max-width:860px}.guide-way-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:26px 0}.guide-way-grid article{border-top:1px solid var(--line);padding-top:24px;display:flex;flex-direction:column}.guide-way-symbol{font-size:.8125rem;color:#9b7650}.guide-way-grid h3{font-size:1.25rem;margin:16px 0 10px}.guide-way-grid p{color:var(--muted);font-size:.9375rem;line-height:1.9}.guide-way-grid a{margin-top:auto}.guide-finish{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:40px;background:#e9eeea;padding:30px;margin:24px 0}.guide-finish h2{margin-top:8px}.guide-finish p{max-width:730px;color:var(--muted)}.guide-finish .actions{display:flex;flex-direction:column;align-items:flex-start;gap:16px}.guide-scope{font-size:.8125rem;color:var(--muted);line-height:1.9;margin-top:30px}.site-footer .footer-inner{display:grid;grid-template-columns:minmax(200px,1fr) auto;align-items:start;gap:28px}.site-footer .footer-identity p{margin:7px 0;font-size:.8125rem;line-height:1.8;color:var(--muted)}.site-footer .footer-service-nav{display:flex;align-items:center;flex-wrap:wrap;gap:8px 24px;max-width:680px}.site-footer .footer-service-nav a{font-size:.8125rem;display:inline-flex;align-items:center;min-height:44px;color:var(--ink)}.site-footer .footer-service-nav a:hover{color:var(--teal)}.friendly-missing{max-width:900px}.friendly-missing .actions{display:flex;gap:18px;flex-wrap:wrap;margin-top:28px}.reading-tools{max-width:1320px;margin:22px auto 0;padding:0 max(4.4vw,24px)}
@media(max-width:1100px) and (min-width:901px){.header nav{gap:18px}.header nav a{font-size:.8125rem}.header nav .nav-search{padding-left:16px}.header .brand{font-size:1.25rem}.header{padding-inline:28px}}
@media(max-width:820px){.guide-path-grid{grid-template-columns:minmax(0,1fr)}.guide-path{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 18px;padding:22px}.guide-path-meta,.guide-path p{grid-column:1/-1}.guide-path h3{margin:12px 0 8px}.guide-path p{margin-bottom:10px}.guide-path-result{margin:0;padding:0}.guide-path-action{margin:0}.guide-heading{align-items:start}.guide-way-grid{grid-template-columns:minmax(0,1fr);gap:20px}.guide-finish{grid-template-columns:minmax(0,1fr);gap:12px}.guide-finish .actions{flex-direction:row;align-items:center;flex-wrap:wrap}.site-footer .footer-inner{grid-template-columns:minmax(0,1fr);gap:10px}.site-footer .footer-service-nav{gap:6px 20px}.guide-section{margin-top:30px}}
@media(max-width:600px){.guide-home{padding-top:28px;padding-bottom:30px}.guide-heading{display:block;margin-bottom:20px}.guide-heading>.text-link{display:inline-block;margin-top:10px}.guide-path{display:flex;padding:20px}.guide-path h3{font-size:1.25rem}.guide-path p{font-size:.875rem}.guide-path-action{margin-top:18px}.guide-path-result{font-size:.8125rem}.guide-finish{padding:22px}.guide-finish .actions{flex-direction:column;align-items:flex-start}.guide-scope{font-size:.8125rem}.guide-way-grid p{font-size:.875rem}.site-footer .footer-inner{padding-inline:20px}.reading-tools{padding-inline:20px}}
@media(prefers-reduced-motion:reduce){.guide-path{transition:none}}
#main>.notebook-toolbar{max-width:1480px;margin:16px auto 0;padding:0 max(4.4vw,24px) 12px}@media(max-width:600px){#main>.notebook-toolbar{padding-inline:20px}}
/* Scene previews turn route cards into question-led invitations. */
.guide-path-scene{grid-column:1/-1;margin:14px -6px 0;background:#edf2ee;border-radius:4px;overflow:hidden}.guide-path-scene svg{display:block;width:100%;height:auto;max-height:148px}.guide-path h3{margin-top:16px}.guide-path-action{margin-top:auto;padding-top:12px}.guide-path-result{margin-top:10px;padding-top:0;color:var(--muted)}
@media(max-width:820px){.guide-path h3{grid-column:1/-1}.guide-path-scene{margin:8px 0 0}.guide-path-action{grid-column:1/-1;margin-top:0}.guide-path-result{grid-column:1/-1}.guide-path-scene svg{max-height:115px}}

/* 14. museum-explore.css */
/* Scoped presentation for the four-field teaching exhibit. */
.explore-page,.explore-preview{--explore-ink:#183541;--explore-muted:#53686d;--explore-paper:#f6f4ee;--explore-line:#c9d3d0;--explore-gold:#976b3d;--explore-soft:#eaf0ed;color:var(--explore-ink)}
.explore-page .pagehead{max-width:850px}.explore-page .pagehead>p:last-child{max-width:720px;line-height:1.85}
.explore-choices{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:26px 0 42px}
.explore-choices>a{display:grid;grid-template-columns:25px minmax(0,1fr);gap:8px 12px;align-content:start;padding:20px 16px;border:1px solid var(--explore-line);border-top:3px solid #a27b51;background:#fff;color:var(--explore-ink);text-decoration:none;min-height:135px;border-radius:3px}
.explore-choices>a:hover{background:#eff3ee;border-color:#79918e}.explore-choices>a[aria-current]{background:#173942;border-color:#173942;color:#fff}
.explore-choice-number{font-family:Georgia,serif;font-size:15px;color:var(--explore-gold)}.explore-choices>a[aria-current] .explore-choice-number{color:#e1bf97}
.explore-choices strong{display:block;font-size:19px;line-height:1.4}.explore-choices small{display:block;font-size:13px;line-height:1.6;margin-top:5px;color:var(--explore-muted)}.explore-choices>a[aria-current] small{color:#dae5e3}
.explore-choice-state{grid-column:2;font-size:12px;margin-top:10px;font-weight:600}
.explore-page a:focus-visible,.explore-page summary:focus-visible,.explore-preview a:focus-visible{outline:3px solid #af7d40;outline-offset:5px}
.explore-domain-heading{max-width:820px;margin-bottom:24px}.explore-domain-heading h2{font-size:clamp(25px,3.3vw,36px);line-height:1.5;margin:10px 0 14px}.explore-domain-heading p{line-height:1.9;max-width:740px}
.explore-reading{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:34px;align-items:start}
.explore-figure{margin:0;padding:20px;background:var(--explore-paper);border:1px solid var(--explore-line);border-radius:4px}
.explore-figure svg{display:block;width:100%;max-width:500px;height:auto;margin:0 auto;background:#f6f4ee;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
.explore-figure figcaption{font-size:12px;line-height:1.8;color:#596b6e;padding-top:15px;margin-top:10px;border-top:1px solid var(--explore-line)}.explore-figure figcaption strong{display:block;font-size:12px;font-weight:600;color:var(--explore-ink);margin-bottom:4px}
.explore-node rect{fill:#fff;stroke:#839d9c;stroke-width:1.6}.explore-node text{fill:#163943;font-size:20px;font-weight:600}.explore-node-accent rect{fill:#1f4c55;stroke:#1f4c55}.explore-node-accent text{fill:#fff}
.explore-link{fill:none;stroke:#a47543;stroke-width:3}.explore-train{fill:#d6e2df;stroke:#526f77;stroke-width:2}.explore-window{fill:#345966}.explore-wheel{fill:#193b47;stroke:#718d91;stroke-width:3}.explore-rail{fill:none;stroke:#536f74;stroke-width:3}.explore-label{fill:#193c46;font-size:21px;font-weight:600}.explore-small{fill:#47636b;font-size:18px}.explore-hub{fill:#e5ede8;stroke:#809a91;stroke-width:2}
.explore-observations{padding:14px 0}.explore-observations h3{font-size:18px;margin:0 0 20px}.explore-observations ol{list-style:none;counter-reset:relation;padding:0;margin:0}.explore-observations li{counter-increment:relation;padding:0 0 18px 39px;position:relative;margin-bottom:20px;border-bottom:1px solid var(--explore-line)}.explore-observations li:before{content:counter(relation,decimal-leading-zero);position:absolute;left:0;top:0;font-family:Georgia,serif;font-size:20px;color:var(--explore-gold)}
.explore-observations h4{font-size:17px;line-height:1.6;margin:0 0 8px}.explore-observations p{font-size:15px;line-height:1.85;margin:0;color:var(--explore-muted)}
.explore-source-links{display:block;font-size:13px;line-height:2;color:var(--explore-muted);margin:15px 0}.explore-source-links a{display:inline-block;text-decoration:underline;text-decoration-color:#a9bbb4;text-underline-offset:4px;padding:2px 0;color:#2c5d62}
.explore-story{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:36px;border-block:1px solid var(--explore-line);margin-top:38px;padding:30px 0}.explore-story h2{font-size:24px;line-height:1.6;margin:10px 0}.explore-person-identity{font-size:13px;line-height:1.8}.explore-story>div>p{line-height:1.85;font-size:15px}.explore-story p>strong{display:block;font-size:13px;margin-bottom:6px;color:var(--explore-ink)}
.explore-task{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:28px;background:var(--explore-soft);margin:30px 0}.explore-task>div{max-width:680px}.explore-task h2{font-size:23px;line-height:1.5;margin:10px 0}.explore-task p{font-size:15px;line-height:1.9;margin:0}.explore-task p.explore-task-bridge{margin-top:14px;font-size:13px;color:var(--explore-muted)}.explore-task .button{flex-shrink:0;max-width:100%;white-space:normal;text-align:center}
.explore-evidence,.explore-bibliography{border-block:1px solid var(--explore-line);margin:24px 0;padding:18px 0}.explore-evidence summary,.explore-bibliography summary{cursor:pointer;line-height:1.75;min-height:34px}.explore-evidence summary>span{font-size:13px;color:var(--explore-gold);margin-right:18px}.explore-evidence summary>strong{font-size:18px}.explore-evidence-body{padding-top:18px;max-width:920px}.explore-evidence-body>p{font-size:15px;line-height:1.85}.explore-table-wrap{overflow-x:auto;margin:18px 0}.explore-evidence table{width:100%;border-collapse:collapse;font-size:15px;background:#fff}.explore-evidence caption{text-align:left;font-size:13px;padding:0 0 8px;color:var(--explore-muted)}.explore-evidence th,.explore-evidence td{padding:12px 16px;text-align:left;border:1px solid var(--explore-line)}.explore-evidence thead{background:var(--explore-soft)}.explore-evidence tbody th{font-weight:400}.explore-calculation{padding:15px;background:var(--explore-paper);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;color:var(--explore-ink)}
.explore-evidence-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px}.explore-evidence-pair h3{font-size:17px;line-height:1.6}.explore-evidence-pair p{font-size:15px;line-height:1.85}.explore-boundary{font-size:13px!important;color:var(--explore-muted);padding-left:14px;border-left:2px solid #b19b7b}.explore-bibliography{font-size:14px}.explore-bibliography li{margin:12px 0;line-height:1.7}.explore-bibliography li>span{display:block;font-size:12px;color:var(--explore-muted)}.explore-bibliography a{color:#2c5d62;text-decoration:underline;text-underline-offset:3px}.explore-bibliography>p{font-size:13px;line-height:1.8}
.explore-next{display:flex;align-items:start;justify-content:space-between;gap:28px;margin:30px 0 0}.explore-next p{max-width:660px;font-size:15px;line-height:1.8}.explore-next>a{flex-shrink:0;line-height:1.8}
.explore-preview .explore-choices{margin:20px 0}.explore-preview .explore-choices>a{min-height:115px}
@media(max-width:1000px){.explore-choices{grid-template-columns:repeat(2,minmax(0,1fr))}.explore-choices>a{min-height:115px}.explore-reading{gap:24px}.explore-story{gap:25px}.explore-task{display:block}.explore-task .button{margin-top:20px}.explore-next{display:block}}
@media(max-width:720px){.explore-reading,.explore-story{grid-template-columns:minmax(0,1fr)}.explore-reading{gap:14px}.explore-figure{padding:12px}.explore-observations{padding-top:10px}.explore-story{padding:24px 0;gap:8px}.explore-story h2{font-size:22px}.explore-task{padding:22px 18px}.explore-evidence-pair{grid-template-columns:minmax(0,1fr);gap:5px}.explore-choice-state{margin-top:4px}.explore-choices>a{padding:16px 12px;gap:6px 8px;grid-template-columns:22px minmax(0,1fr)}.explore-choices strong{font-size:17px}.explore-choices small{font-size:12px}.explore-evidence summary>span{display:block}.explore-evidence summary>strong{font-size:17px}.explore-evidence th,.explore-evidence td{padding:10px;font-size:14px}}
@media(max-width:380px){.explore-choices{gap:8px}.explore-choices>a{grid-template-columns:1fr;padding:13px 11px}.explore-choice-number{font-size:13px}.explore-choice-state{grid-column:1}.explore-choices strong{font-size:16px}.explore-figure{padding:8px}.explore-task h2{font-size:21px}}
@media print{.explore-page .section-tabs,.explore-choices,.explore-task .button,.explore-next{display:none}.explore-page{max-width:none;padding:0}.explore-reading{grid-template-columns:1fr 1fr;gap:20px}.explore-figure,.explore-story,.explore-task{break-inside:avoid}.explore-domain-heading h2{font-size:20pt}.explore-page p{font-size:10pt;line-height:1.5}.explore-task{padding:12px}.explore-story{gap:18px;padding:15px 0}.explore-evidence-pair{grid-template-columns:1fr 1fr}}

/* 15. museum-notebook.css */
/* Personal collection and browsing come first; study tools are optional. */
.notebook-intro{max-width:850px;font-size:.9375rem;color:var(--muted)}
.notebook-storage{padding:20px 24px;background:#e9ede6;border-left:3px solid var(--teal);border-radius:12px;margin:14px 0}
.notebook-storage>label{display:flex;gap:12px;align-items:flex-start;font-weight:600;cursor:pointer}
.notebook-storage input{width:20px;height:20px;margin:4px 0;flex:none;accent-color:var(--teal)}
.notebook-storage p{margin:12px 0 0;font-size:.8125rem;line-height:1.8}
.notebook-toolbar{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:12px 26px;margin:16px 0 24px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.notebook-toolbar button{font:inherit;font-size:.875rem}
.notebook-toolbar button[aria-pressed=true]{color:var(--teal);font-weight:600}
.notebook-resume{display:flex;align-items:center;gap:18px 24px;padding:22px 26px;border:1px solid #c8d2c6;border-radius:12px;background:#eff2eb;margin:28px 0;flex-wrap:wrap}
.notebook-resume>div{flex:1;min-width:220px}
.notebook-resume p{margin:8px 0 0;font-size:.875rem}
.notebook-visit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;margin:30px 0}
.notebook-section{margin:30px 0;padding-top:24px;border-top:1px solid var(--line);min-width:0}
.notebook-visit-grid>.notebook-section{margin:0}
.notebook-section h2{font-size:1.25rem;display:flex;align-items:center;gap:10px;margin:0 0 14px}
.notebook-section h2>span{font:500 .75rem/1.5 var(--sans,sans-serif);padding:2px 7px;background:#e8eee6;border-radius:5px;color:var(--muted)}
.notebook-empty{font-size:.875rem;color:var(--muted);margin:16px 0 8px}
.notebook-drafts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:20px 0}
.notebook-drafts article{padding:20px;border:1px solid var(--line);border-radius:12px;background:#fffefa}
.notebook-drafts h3{font-size:1rem;margin:0 0 10px}
.notebook-drafts p,.notebook-drafts .text-link{font-size:.8125rem}
.notebook-list{list-style:none;padding:0;margin:12px 0}
.notebook-list>li{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);min-width:0}
.notebook-list a{overflow-wrap:anywhere;color:var(--ink);text-decoration:underline;text-underline-offset:4px;font-size:.875rem;line-height:1.8}
.notebook-list small,.notebook-list time{display:block;color:var(--muted);font-size:.6875rem;flex:none}
.notebook-list button{flex:none;font-size:.75rem}
.notebook-stage{display:flex;align-items:center;gap:10px;font-size:.8125rem;flex-shrink:0}
.notebook-stage select{border:1px solid #aab5b4;border-radius:8px;background:#fffefa;color:var(--ink);padding:9px 10px;min-height:44px}
.notebook-settings,.notebook-learning-tools{padding:10px 0;border-top:1px solid var(--line);margin:0}
.notebook-settings>summary{display:flex;align-items:center;gap:18px;min-height:50px;padding:8px 0;font-size:.8125rem;cursor:pointer;color:var(--muted)}
.notebook-settings>summary>span{font-size:.75rem;color:var(--muted)}
.notebook-learning-tools>summary{display:grid;grid-template-columns:1fr 20px;gap:4px 14px;min-height:64px;padding:10px 0;list-style:none;cursor:pointer;color:var(--muted)}
.notebook-learning-tools>summary::-webkit-details-marker{display:none}
.notebook-learning-tools>summary>span{font-size:.875rem;font-weight:500}
.notebook-learning-tools>summary>small{font-size:.75rem;line-height:1.7}
.notebook-learning-tools>summary::after{content:'＋';grid-column:2;grid-row:1/3;align-self:center;font-size:1.2rem;color:var(--teal)}
.notebook-learning-tools[open]>summary::after{content:'−'}
.notebook-learning-body{padding:6px 0 0}
.notebook-learning-body>.notebook-section:first-child{margin-top:0;border:0}
.notebook-learning-body h2{font-size:1.0625rem}
.notebook-learning-body>.notebook-section:last-child{margin-bottom:10px}
.notebook-history-more>summary,.notebook-stage-tools>summary{min-height:44px;padding:10px 0;cursor:pointer;color:var(--teal);font-size:.8125rem}
.notebook-stage-tools{border-top:1px solid var(--line);padding-top:10px;margin-top:24px}
#notebook-clear-confirm{padding:18px 22px;border:1px solid #b77958;border-radius:8px;background:#fff8ed;margin-top:18px}
#notebook-clear-confirm[hidden]{display:none}
@media(max-width:700px){
  .notebook-visit-grid{grid-template-columns:1fr;gap:26px;margin:24px 0}
  .notebook-section h2{font-size:1.125rem}
  .notebook-drafts{grid-template-columns:minmax(0,1fr);gap:10px}
  .notebook-storage,.notebook-resume{padding:18px 20px}
  .notebook-resume>div{min-width:0;flex-basis:100%}
  .notebook-resume{gap:10px 20px}
  .notebook-resume p{font-size:.8125rem}
  .notebook-list>li{flex-wrap:wrap;align-items:center;gap:8px 14px;padding:14px 0}
  .notebook-list>li>div{width:100%}
  .notebook-visits>li{flex-wrap:nowrap}
  .notebook-list a{font-size:.8125rem}
  .notebook-toolbar{justify-content:flex-start;gap:10px 22px}
  .notebook-section{margin:24px 0}
  .notebook-stage{width:100%;justify-content:space-between}
  .notebook-stage select{min-width:140px}
  .notebook-settings>summary{gap:12px;font-size:.75rem;flex-wrap:wrap}
  .notebook-settings>summary>span{font-size:.6875rem}
  .notebook-learning-tools>summary>span{font-size:.8125rem}
  .notebook-learning-tools>summary>small{font-size:.6875rem}
  .notebook-learning-body .actions{gap:10px 18px}
  .notebook-learning-body .actions .button{width:100%;font-size:.875rem}
}

/* 16. museum-services.css */
/* Service pages share the museum palette and remain independent of its router. */
.services-page{max-width:1180px}
.services-page .pagehead{max-width:850px}
.services-nav{gap:12px 30px}
.services-nav a{min-height:48px}
.services-body{max-width:1020px}
.services-section{padding:28px 0;border-bottom:1px solid var(--line,#cdd2ce);scroll-margin-top:110px}
.services-section:first-child{padding-top:2px}
.services-section h2,.services-update h2{font-size:clamp(1.3rem,2.3vw,1.65rem);line-height:1.5;margin:0 0 16px;color:var(--ink,#132b36)}
.services-section>p,.services-update>p{max-width:55rem;margin:12px 0;overflow-wrap:anywhere}
.services-section h3{font-size:1.1rem;line-height:1.55;margin:0 0 10px}
.services-directions{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin:24px 0}
.services-directions>article{min-width:0;border-top:2px solid var(--teal,#246a6c);padding:18px 0 4px}
.services-directions p{font-size:.9375rem;margin:10px 0}
.services-directions .text-link{font-size:.875rem}
.services-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;margin:20px 0}
.services-pair>article{min-width:0;padding:18px 20px;background:var(--surface,#fff);border:1px solid var(--line,#cdd2ce);border-radius:4px}
.services-pair p{margin:10px 0 0;font-size:.9375rem}
.services-facts{display:grid;grid-template-columns:145px minmax(0,1fr);gap:15px 26px;margin:18px 0}
.services-facts dt{font-weight:600;color:var(--ink,#132b36)}
.services-facts dd{margin:0;color:var(--muted,#59666a);overflow-wrap:anywhere}
.services-links{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:18px}
.services-links>a{min-height:40px;gap:8px;text-decoration:none}
.services-outline{display:flex;flex-wrap:wrap;gap:8px 24px;padding:14px 18px;margin:0 0 26px;background:#eeeee8;border-left:3px solid var(--teal,#246a6c)}
.services-outline a{min-height:36px;display:inline-flex;align-items:center;color:var(--ink,#132b36);text-decoration:underline;text-underline-offset:5px}
.services-steps{padding-left:1.4rem;margin:18px 0}
.services-steps li{margin:15px 0;padding-left:5px;color:var(--muted,#59666a)}
.services-steps strong{color:var(--ink,#132b36)}
.services-note{padding:18px 22px;margin:24px 0;background:#e9eeeb;border-left:3px solid var(--teal,#246a6c);font-size:.9375rem;color:var(--muted,#59666a)}
.services-note p{margin:8px 0 0}
.services-note strong{color:var(--ink,#132b36)}
.services-update{padding:26px 0;border-bottom:1px solid var(--line,#cdd2ce)}
.services-update:first-child{padding-top:0}
.services-date{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.875rem;color:var(--muted,#59666a);margin:0 0 14px}
.services-date time{color:var(--accent-dark,#664328)}
.services-update ul{padding-left:1.4rem;color:var(--muted,#59666a)}
.services-update li{margin:10px 0}
.services-revision{font-size:.8125rem;margin:25px 0;color:var(--muted,#59666a)}
.services-return{margin-top:30px}
.services-page a:focus-visible{outline:3px solid var(--accent,#805b38);outline-offset:4px}
@media(max-width:760px){.services-directions{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 24px}.services-pair{grid-template-columns:1fr;gap:16px}.services-section{padding:24px 0}.services-facts{grid-template-columns:115px minmax(0,1fr);gap:12px 18px}.services-outline{padding:12px 15px;gap:4px 20px}.services-links{gap:8px 18px}}
@media(max-width:420px){.services-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 22px;overflow:visible}.services-nav>a{white-space:normal}.services-facts{grid-template-columns:1fr;gap:4px}.services-facts dd{margin-bottom:14px}.services-directions{grid-template-columns:1fr;gap:10px}.services-pair>article{padding:16px}.services-note{padding:15px 17px}.services-outline{gap:4px 18px}.services-steps{padding-left:1.25rem}}
@media print{.services-page{max-width:none;padding:0}.services-nav,.services-outline,.services-return{display:none}.services-section,.services-update{break-inside:avoid}.services-pair,.services-directions{grid-template-columns:repeat(2,minmax(0,1fr))}.services-note,.services-pair>article{background:transparent}.services-page a{color:inherit}}

/* 17. museum-design.css */
/* Canonical finishing layer. Built last by qa/design-20261008/build_styles.py.
   Keep shared controls here; module-specific behavior stays in its own stylesheet. */
:root {
  --ink:#16343f; --muted:#55676c; --paper:#f7f5ef; --surface:#fffefa;
  --line:#d3dbd6; --accent:#87603e; --accent-dark:#634327; --teal:#246b6d;
  --radius:12px; --control-radius:8px; --header-height:76px;
  --space-section:clamp(42px,5vw,80px);
}
html { scroll-padding-top:calc(var(--header-height) + 24px); }
body { background:var(--paper); text-rendering:optimizeLegibility; }
button,input,select,textarea { font:inherit; }
button,a,summary { -webkit-tap-highlight-color:transparent; }
a,button { transition:color .16s,background-color .16s,border-color .16s,box-shadow .16s; }
:is(a,button,input,select,textarea,summary,[tabindex='0']):focus-visible { outline:3px solid #247b80; outline-offset:4px; }
::selection { background:#d7e6de; color:#102f38; }
.shell { max-width:1400px; padding-inline:clamp(24px,5vw,72px); }
.header { height:var(--header-height); min-height:var(--header-height); padding:10px clamp(24px,4.4vw,74px); gap:24px; box-shadow:none; }
.header .brand { font-size:1.25rem; gap:11px; flex-shrink:0; }
.header .brand small { font-size:.6875rem; letter-spacing:.12em; margin-top:3px; }
.header .brand img { width:34px; height:34px; }
.header nav { gap:26px; }
.header nav a { font-size:.875rem; min-height:44px; }
.header nav a:after { height:2px; border-radius:2px; }
.header nav .nav-search { padding-left:24px; }
.button { border-radius:var(--control-radius); min-height:46px; padding:11px 20px; font-size:.9375rem; font-weight:600; box-shadow:none; }
.button:not(.light) { background:var(--ink); border-color:var(--ink); color:#fff; }
.button:not(.light):hover { background:#28505b; border-color:#28505b; }
.button.light { color:var(--ink); border-color:#b8c7c3; background:transparent; }
.button.light:hover { background:#e9eeea; border-color:#799792; }
.text-link { min-height:44px; align-items:center; color:var(--teal); border-bottom-color:#92b0a770; }
.pagehead { padding:6px 0 20px; margin-bottom:16px; }
.pagehead h1 { font-size:clamp(1.85rem,3.2vw,2.7rem); line-height:1.35; letter-spacing:-.035em; }
.pagehead .eyebrow { font-size:.75rem; font-weight:600; letter-spacing:.1em; }
.pagehead p { line-height:1.85; }
.section-tabs { gap:26px; scrollbar-width:thin; scrollbar-color:#bdcec8 transparent; }
.section-tabs a { min-height:46px; font-size:.875rem; }
.section-tabs a[aria-current='page'] { color:var(--ink); font-weight:600; border-color:var(--accent); }
.page-outline { border-radius:var(--control-radius); }
.content-fold,.task-fold,.guide-finish,.notebook-storage,.notebook-resume,.people-reading,.people-event { border-radius:var(--radius); }
.content-fold>summary,details>summary { min-height:44px; align-content:center; }
.notice { border-radius:var(--control-radius); line-height:1.8; }
.notebook-toolbar { font-size:.8125rem; gap:8px 20px; }
.notebook-toolbar .text-link { font-size:.8125rem; }
#main>.notebook-toolbar { max-width:1400px; margin-top:10px; padding-inline:clamp(24px,5vw,72px); }
.library-page .doc-item,.notebook-drafts article,.people-comparison-grid>article,.explore-choices>a { border-radius:var(--radius); }
.library-page .doc-cover { background:#e7ece5; }
.library-page .doc-item .doc-read { border-radius:var(--control-radius); }
.experience-refined .xp-entry,.film-stage,.museum-signal-layout { border-radius:var(--radius); overflow:hidden; }
.experience-refined .xp-entry-copy { padding:32px; }
.visit-bar { max-width:1256px; margin:20px auto 0; padding:16px 22px; border:1px solid #c4d4ca; border-radius:var(--radius); background:#eaf0e9; }
.visit-bar .visit-continue { border-radius:6px; color:var(--ink); min-height:44px; display:inline-flex; align-items:center; text-decoration:underline; text-underline-offset:4px; }

/* The homepage is a single exhibition sequence. */
.museum-hero { isolation:isolate; }
.museum-hero-inner { max-width:1400px; min-height:570px; padding:58px clamp(24px,5vw,72px) 60px; }
.museum-hero-art { left:32%; }
.museum-hero-art:after { background:linear-gradient(90deg,#102a34 0%,#102a3494 28%,#102a3410 63%),linear-gradient(0deg,#102a3466,transparent 35%); }
.museum-hero-art img { height:calc(100% + 110px); transform:translateY(-25px); object-position:57% 50%; }
.museum-hero-copy { max-width:490px; }
.museum-kicker { font-size:.75rem; letter-spacing:.06em; margin-bottom:25px; color:#cbdedb; }
.museum-hero h1 { font:500 clamp(4rem,6.2vw,6.3rem)/1.13 var(--serif); letter-spacing:-.055em; margin-bottom:23px; }
.museum-hero h1 em { color:#e5c190; }
.museum-hero-lead { font-size:1.0625rem; color:#e1e9e5; line-height:1.85; margin-bottom:27px; }
.museum-hero-actions { display:flex; align-items:center; gap:24px; flex-wrap:wrap; }
.museum-hero .museum-start { min-height:50px; padding:12px 24px; gap:38px; background:#e5c190; border-color:#e5c190; color:#102a34; }
.museum-hero .museum-start:hover { background:#f2d6ab; border-color:#f2d6ab; }
.museum-watch { margin:0; min-height:44px; color:#eff4ee; font-size:.8125rem; gap:8px; }
.museum-hero-caption { margin:23px 0 0; font-size:.6875rem; letter-spacing:.12em; color:#aebfbc; }
.museum-enter { right:max(5vw,calc((100vw - 1256px)/2)); bottom:48px; min-width:260px; border-radius:10px; padding:16px 20px; gap:28px; background:#f8f6efd9; backdrop-filter:blur(12px); border:1px solid #ffffff88; }
.museum-enter span { font-size:.9375rem; }.museum-enter small{font-size:.6875rem; margin-top:3px;}
.museum-scene-label { bottom:16px; font-size:.625rem; right:max(5vw,calc((100vw - 1256px)/2)); border-radius:3px; }
.museum-chapters { position:sticky; top:var(--header-height); z-index:20; max-width:none; padding:0 max(5vw,calc((100vw - 1256px)/2)); background:#f7f5eff5; backdrop-filter:blur(16px); box-shadow:0 4px 14px #173a3507; border-bottom:1px solid #d3dbd6; }
.museum-chapters a { position:relative; padding:18px 26px; grid-template-columns:30px 1fr; gap:1px 12px; border:0!important; }
.museum-chapters a:after { content:''; position:absolute; height:3px; bottom:-1px; left:25px; right:25px; background:transparent; border-radius:3px; }
.museum-chapters a:first-child:after { left:0; }
.museum-chapters a[aria-current='location']:after { background:var(--teal); }
.museum-chapters strong { font-size:.9375rem; }.museum-chapters small{font-size:.75rem;}
.museum-chapters a[aria-current='location'] strong { color:var(--teal); }
.museum-section { padding-top:var(--space-section); padding-bottom:var(--space-section); }
.museum-section-head { margin-bottom:30px; gap:30px; }
.museum-section-head h2 { font-size:clamp(1.65rem,2.6vw,2.35rem); letter-spacing:-.03em; }
.museum-section-head>p { font-size:.875rem; }
.museum-section-number { color:var(--accent); margin-bottom:12px; font-size:.6875rem; letter-spacing:.13em; }
.museum-signal-layout { border:1px solid #c8d4cd; box-shadow:0 12px 35px #20372b05; background:#fffefa; }
.museum-signal-layout .signal-exhibit { border:0; border-radius:0; align-self:stretch; padding:30px; }
.museum-signal-layout #tech-detail { padding:32px; }
.museum-signal-layout #tech-detail h2 { font-size:1.65rem; }
.museum-signal-layout #tech-detail>p:not(.device-takeaway) { font-size:.9375rem; }
.signal-device-buttons button { border-radius:7px!important; }
.museum-signal-layout #tech-detail .notice { margin-top:16px; border-radius:8px; }
.museum-section-foot { gap:10px 24px; font-size:.8125rem; padding-top:18px; }
.museum-section-foot>a { min-height:44px; gap:12px; }
.museum-team.people-home { padding:0; background:#183a41; border:0; }
.people-home>.shell { padding-top:var(--space-section); padding-bottom:var(--space-section); }
.people-home-heading h2 { font:500 clamp(2rem,3.4vw,3.05rem)/1.4 var(--serif); margin:4px 0 20px; }
.people-home-heading>div { max-width:400px; font-size:.875rem; }
.people-home .people-cards { gap:22px; margin-top:34px; }
.people-home .people-card { padding:0 0 12px; background:transparent; border:0; border-radius:0; }
.people-home .people-card:hover { background:transparent; }
.people-home .people-number { font-size:.75rem; letter-spacing:.03em; }
.people-home .people-card-photo { height:210px; background:#e1e9e3; border-radius:10px; margin:14px 0 16px; }
.people-home .people-card-photo img { transition:transform .3s; }
.people-home .people-card:hover .people-card-photo img { transform:scale(1.035); }
.people-home .people-card>strong { font-size:1.5rem; margin:0 0 7px; }
.people-home .people-field { font-size:.8125rem; color:#b6d0cb; }
.people-home .people-card p { font-size:.9375rem; line-height:1.7; margin:12px 0 18px; }
.people-home .people-card-link { border-top:1px solid #5a7675; padding-top:13px; color:#e9c79e; font-size:.8125rem; }
.museum-reading-grid { gap:28px; }
.museum-board-preview { border-radius:10px; padding:13px; border-color:#d1dad0; }
.museum-reading-item h3 { font-size:1.0625rem; line-height:1.65; margin-top:7px; }
.museum-reading-meta { margin-top:16px; font-size:.6875rem; }
.museum-reading-link { min-height:44px; font-size:.8125rem; }
.home-invitation { background:#e8eee5; border-block:1px solid #d4ded0; }
.home-invitation>.shell { display:grid; grid-template-columns:1.05fr 1fr; gap:12px 60px; padding-block:44px; align-items:center; }
.home-invitation h2 { font-size:clamp(1.6rem,2.6vw,2.3rem); line-height:1.5; margin:12px 0; }
.home-invitation p { font-size:.9375rem; line-height:1.8; }
.home-invitation .eyebrow { color:var(--accent); font-size:.75rem; }
.home-invitation .actions { display:flex; gap:14px 24px; flex-wrap:wrap; align-items:center; margin-top:22px; }
.home-invitation-art svg { display:block; width:100%; height:auto; max-height:235px; }
.home-invitation .notebook-resume { grid-column:1/-1; margin:12px 0 0; background:#f7faf2; padding:18px 22px; }
.home-invitation .notebook-resume p { font-size:.8125rem; }
.museum-takeaway { border:0; padding-top:56px; padding-bottom:60px; }
.museum-takeaway h2 { font-size:2rem; }.museum-takeaway p{font-size:.875rem;max-width:440px;}
body[data-route='home'] :is(#signal-lab,#team-story,#innovation,#guide-home-title){scroll-margin-top:62px;}

/* Route selection gets its own spacious page, without repeating it on the homepage. */
.guide-page .pagehead { max-width:none; }
.guide-page>.page-outline { background:transparent; border:0; border-bottom:1px solid var(--line); border-radius:0; padding:0 0 16px; margin:8px 0 28px; }
.guide-path { border:1px solid #cbd7cd; border-radius:12px; padding:25px; background:#fffefa; }
.guide-path:hover { border-color:#6b918b; background:#f5f8f0; box-shadow:0 8px 24px #20382a08; }
.guide-path-scene { border-radius:8px; background:#edf2eb; margin:18px 0 2px; }
.guide-path h3 { font-size:1.25rem; line-height:1.55; }
.guide-path p { font-size:.875rem; line-height:1.8; }
.guide-path-action { color:var(--teal); padding-top:18px; border-top:1px solid #dce4d8; }
.guide-path-result { font-size:.75rem; }
.guide-section { margin:38px 0 56px; }
.guide-way-grid article { padding:22px; border:1px solid var(--line); border-radius:12px; background:#fdfcf7; }
.guide-way-symbol { font-size:1.5rem; font-family:Georgia,serif; color:#a28462; }
.guide-way-grid h3 { margin-top:10px; }.guide-way-grid p{font-size:.875rem;}
.site-footer { border-top:1px solid #d1dbd1; background:#eeeee6; }
.site-footer .footer-inner { max-width:1400px; padding:34px clamp(24px,5vw,72px); gap:28px 50px; }
.site-footer .footer-identity strong { font-size:1rem; }
.site-footer .footer-service-nav { display:grid; grid-template-columns:repeat(4,auto); gap:0 24px; }
.site-footer .footer-service-nav a { font-size:.75rem; }

@media(max-width:1100px){
  .header nav{gap:18px}.header nav a{font-size:.8125rem}.header nav .nav-search{padding-left:18px}
  .museum-hero-inner{min-height:540px}.museum-hero-copy{max-width:440px}.museum-hero h1{font-size:5rem}
  .people-home .people-cards{gap:24px}.people-home .people-card-photo{height:210px}
  .visit-bar{margin-inline:24px}
}
@media(max-width:1000px){
  .header .menu{display:block;min-height:44px;padding:8px 16px;border-radius:8px}
  .header nav{display:none;position:absolute;top:100%;left:0;right:0;padding:14px 24px 20px;background:#102a34;box-shadow:0 14px 18px #0f28281a;border-bottom:1px solid #4d696e}
  .header nav.open{display:grid;grid-template-columns:1fr 1fr;gap:8px 20px}.header nav.open a{padding:10px 12px;font-size:.9375rem;border-radius:6px;min-height:46px}
  .header nav.open .nav-search{grid-column:1/-1;border-left:0;border-top:1px solid #4d696e;margin-top:4px;padding:12px}
  .museum-enter{min-width:215px;padding:13px 16px;right:5vw}.museum-enter b{font-size:1.3rem}
  .museum-chapters a{padding-inline:14px;gap:2px 6px}.museum-chapters a:after{left:14px;right:14px}
  .museum-signal-layout{grid-template-columns:1.2fr 1fr}.museum-signal-layout #tech-detail{padding:26px}
}
@media(max-width:780px){
  .museum-signal-layout{grid-template-columns:1fr}.museum-signal-layout #tech-detail{padding:26px}
  .museum-chapters small{display:none}.museum-chapters a{padding-block:17px}
  .people-home-heading{display:block}.people-home-heading h2 br{display:none}.people-home-heading>div{max-width:none}
  .home-invitation>.shell{gap:20px;grid-template-columns:1.2fr .8fr}.home-invitation-art svg{max-height:220px}
  .site-footer .footer-inner{grid-template-columns:1fr}.site-footer .footer-service-nav{width:100%;justify-content:start;column-gap:28px}
}
@media(max-width:600px){
  :root{--header-height:64px;--space-section:40px}
  .shell{padding-inline:20px}.header{padding:8px 20px;gap:12px}.header .brand{font-size:1.0625rem;gap:9px}.header .brand img{width:28px;height:28px}.header .brand small{font-size:.5625rem;letter-spacing:.08em}.header .menu{min-height:42px;padding:7px 12px;font-size:.8125rem}
  .pagehead{padding-top:0;padding-bottom:12px}.pagehead h1{font-size:1.85rem}.pagehead p{font-size:.875rem}
  .section-tabs{gap:22px;margin-bottom:20px}.section-tabs a{font-size:.8125rem;min-height:44px}
  .museum-hero{display:block}.museum-hero-art{position:absolute;inset:0;height:100%;order:initial;opacity:.62}
  .museum-hero-art img{height:100%;object-position:67% 50%;transform:none}
  .museum-hero-art:after{background:linear-gradient(90deg,#102a34ed,#102a34a8 65%,#102a3470),linear-gradient(0deg,#102a34d9,transparent 50%)}
  .museum-hero-inner{position:relative;min-height:465px;padding:31px 22px 80px;order:initial;width:100%}
  .museum-hero-copy{max-width:none}.museum-kicker{font-size:.625rem;letter-spacing:.025em;gap:7px;margin-bottom:21px}
  .museum-kicker>span{width:14px}.museum-hero h1{font-size:clamp(3.5rem,15vw,4.65rem);line-height:1.13;margin:0 0 20px;letter-spacing:-.045em}
  .museum-hero-lead{font-size:.9375rem;line-height:1.75;margin-bottom:20px}.museum-hero-lead br{display:block}
  .museum-hero-actions{gap:13px 18px}.museum-hero .museum-start{min-height:48px;font-size:.875rem;padding:11px 19px;gap:25px;margin:0}
  .museum-watch{font-size:.75rem;gap:7px;margin:0;min-height:44px}.museum-hero-caption{display:none}
  .museum-enter{position:absolute;bottom:18px;left:22px;right:auto;min-width:0;padding:8px 0;gap:20px;border:0;border-radius:0;background:transparent;color:#d4dfdb;backdrop-filter:none;min-height:44px}
  .museum-enter:hover{background:transparent;color:#eacb9c}.museum-enter span{font-size:.75rem;font-weight:400}.museum-enter small{display:none}.museum-enter b{font-size:1.1rem}
  .museum-scene-label{right:16px;bottom:31px;font-size:.625rem;background:transparent;padding:0;color:#b8c9c4}
  .museum-chapters{padding-inline:12px;top:64px}.museum-chapters a{display:flex;justify-content:center;flex-wrap:nowrap;gap:5px;padding:16px 4px;min-width:0}.museum-chapters a:first-child{padding-left:4px}.museum-chapters span{font-size:.625rem}.museum-chapters strong{font-size:.75rem;white-space:nowrap}.museum-chapters a:after,.museum-chapters a:first-child:after{left:8px;right:8px}
  .museum-section-head{margin-bottom:23px}.museum-section-head h2{font-size:1.7rem}.museum-section-head>p{font-size:.8125rem;line-height:1.75;margin-top:12px}.museum-section-head>p br{display:none}
  .museum-signal-layout .signal-exhibit{padding:20px 16px}.museum-signal-layout #tech-detail{padding:23px 20px}.museum-signal-layout #tech-detail h2{font-size:1.35rem;margin:9px 0 15px}.museum-signal-layout .device-takeaway{font-size:1rem;padding-left:13px}.museum-signal-layout #tech-detail>p:not(.device-takeaway){font-size:.875rem}
  .museum-section-foot{gap:3px 16px}.museum-section-foot>span{flex-basis:100%;font-size:.75rem}.museum-section-foot>a{font-size:.8125rem}
  .people-home>.shell{padding-block:40px}.people-home-heading h2{font-size:1.9rem;line-height:1.45;margin-bottom:16px}.people-home-heading>div p{font-size:.875rem}.people-home-heading>div p br{display:none}
  .people-home .people-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 16px;margin-top:25px}.people-home .people-card-photo{height:150px;margin:10px 0 13px;border-radius:8px}.people-home .people-number{font-size:.6875rem;line-height:1.6}.people-home .people-card>strong{font-size:1.25rem}.people-home .people-field{font-size:.6875rem;line-height:1.65}.people-home .people-card p{font-size:.8125rem;line-height:1.75;margin:10px 0 12px}.people-home .people-card-link{font-size:.75rem;line-height:1.8;padding-top:10px}
  .museum-reading-grid{grid-template-columns:1fr;gap:26px}.museum-board-preview{padding:10px}.museum-reading-item h3{font-size:1.0625rem;margin-bottom:12px}.museum-reading-meta{font-size:.6875rem}.museum-reading-link{font-size:.75rem}
  .home-invitation>.shell{grid-template-columns:1fr;padding-block:32px;gap:12px}.home-invitation-art{grid-row:1}.home-invitation-art svg{max-height:170px}.home-invitation h2{font-size:1.55rem}.home-invitation p{font-size:.875rem}.home-invitation .actions{gap:10px 18px;margin-top:19px}.home-invitation .actions .text-link{font-size:.8125rem}
  .museum-takeaway{padding-block:38px;gap:24px}.museum-takeaway h2{font-size:1.65rem}.museum-takeaway h2 br{display:none}.museum-takeaway-actions>.button{min-height:48px;font-size:.875rem;gap:25px}
  body[data-route='home'] :is(#signal-lab,#team-story,#innovation,#guide-home-title){scroll-margin-top:38px}
  .guide-page>.page-outline{gap:4px 18px;font-size:.75rem;margin-bottom:24px;padding-bottom:10px}.guide-page>.page-outline>span{display:none}.guide-section{margin:28px 0 36px}
  .guide-path{display:grid;grid-template-columns:minmax(0,1fr) 92px;gap:8px 16px;padding:20px;border-radius:12px}.guide-path-meta{grid-column:1/-1}.guide-path-scene{grid-column:2;grid-row:2/4;margin:7px 0 0;align-self:center;background:#edf2eb;border-radius:8px}.guide-path-scene svg{height:90px;max-height:none;width:100%;object-fit:cover}.guide-path h3{grid-column:1;grid-row:2;margin:6px 0 0;font-size:1.0625rem}.guide-path p{grid-column:1/-1;grid-row:4;font-size:.8125rem;line-height:1.8;margin:3px 0 8px}.guide-path-action{grid-column:1/-1;grid-row:5;margin:0;padding-top:13px;font-size:.8125rem}.guide-path-result{grid-column:1/-1;grid-row:6;font-size:.6875rem;margin-top:2px}.guide-path-meta{font-size:.625rem}.guide-path-meta b{font-size:.6875rem}
  .guide-way-grid article{padding:20px}.guide-finish{padding:23px}.guide-finish h2{font-size:1.5rem}.guide-finish p{font-size:.875rem}
  #main>.notebook-toolbar{padding-inline:20px}.visit-bar{margin:14px 20px 0;padding:14px 17px}.visit-bar>span:first-child{font-size:.8125rem}.visit-bar>span:nth-child(2){font-size:.75rem}.visit-bar .visit-continue{font-size:.8125rem}.visit-bar button{min-height:44px}
  .experience-refined .xp-entry-copy{padding:23px 20px}.site-footer .footer-inner{padding:28px 20px;gap:18px}.site-footer .footer-service-nav{grid-template-columns:repeat(3,minmax(0,1fr));column-gap:10px}.site-footer .footer-service-nav a{font-size:.6875rem;min-height:42px}
}
@media(max-width:360px){
  .shell{padding-inline:16px}.museum-hero-inner{padding-inline:18px;min-height:455px}.museum-hero h1{font-size:3.5rem}.museum-kicker{font-size:.5625rem}.museum-hero-actions{gap:8px 14px}.museum-hero .museum-start{gap:20px;padding-inline:16px}.museum-watch{font-size:.6875rem}.museum-scene-label{display:none}.museum-enter{left:18px}
  .people-home .people-cards{gap:22px 12px}.people-home .people-card-photo{height:130px}.people-home .people-number{font-size:.625rem}.people-home .people-card p{font-size:.75rem}.people-home .people-card-link{font-size:.6875rem}
  .guide-path{grid-template-columns:minmax(0,1fr) 72px;padding:17px;gap:8px 12px}.guide-path-scene svg{height:75px}.guide-path h3{font-size:1rem}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}.people-home .people-card:hover .people-card-photo img{transform:none}
}
@media print{.museum-chapters{position:static}.header{position:static}.home-invitation-art{display:none}.museum-hero{color:#000;background:#fff}}
/* Help remains available without preceding the first route with another directory. */
.guide-quick-links{display:flex;gap:12px 24px;font-size:.8125rem;margin:0 0 18px;padding-bottom:14px;border-bottom:1px solid var(--line)}.guide-quick-links a{display:inline-flex;align-items:center;min-height:44px;color:var(--teal)}.guide-continue{margin:0 0 22px;font-size:.875rem}.guide-continue>summary{cursor:pointer;color:var(--teal);min-height:44px}.guide-continue .notebook-resume{margin:8px 0}.guide-page .guide-section:first-of-type{margin-top:22px}.guide-page .guide-section:first-of-type>.guide-heading h2{font-size:1.25rem}.guide-page .guide-section:first-of-type>.guide-heading{margin-bottom:20px}@media(max-width:600px){.guide-quick-links{gap:8px 20px;font-size:.75rem;margin-bottom:8px;padding-bottom:8px}.guide-continue{font-size:.8125rem;margin-bottom:12px}.guide-page .guide-section:first-of-type{margin-top:18px}.guide-page .guide-section:first-of-type>.guide-heading h2{font-size:1.125rem}}

/* 18. museum-visit.css */
/* Real photography and a visit-first presentation. */
.museum-hero.visit-hero .museum-hero-art{left:0;inset:0;}
.museum-hero.visit-hero .museum-hero-art img{height:100%;transform:none;object-position:64% 54%;}
.museum-hero.visit-hero .museum-hero-art:after{background:linear-gradient(90deg,#081f2be8 0%,#102d36a8 34%,#102d3610 76%),linear-gradient(0deg,#09222b60,transparent 38%);}
.visit-hero .museum-hero-copy{max-width:530px}.visit-hero .museum-hero-inner{min-height:610px;padding-block:76px 95px}
.visit-hero .museum-hero h1{font-size:clamp(4rem,6.2vw,6.3rem)}
.visit-hero .museum-scene-label{max-width:80%;background:#09222bc7;color:#e9eeeb;font-size:.68rem;padding:5px 10px}
.visit-hero .visit-photo-credit{margin:0;color:inherit}.visit-hero .visit-photo-credit a{color:inherit;text-underline-offset:3px}
.visit-photo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 28px}
.visit-photo-home{grid-template-columns:1.25fr 1fr;gap:26px}
.visit-photo-card{margin:0;min-width:0}
.visit-photo-card>button{position:relative;display:block;border:0;border-radius:10px;padding:0;background:#d5ded9;overflow:hidden;width:100%;cursor:zoom-in;text-align:inherit}
.visit-photo-card>button img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;display:block;transition:transform .28s}
.visit-photo-card>button:hover img{transform:scale(1.025)}
.visit-photo-home .visit-photo-card:first-child{grid-row:span 2;display:flex;flex-direction:column}
.visit-photo-home .visit-photo-card:first-child>button{flex:1;min-height:0}.visit-photo-home .visit-photo-card:first-child img{position:absolute;inset:0;height:100%;aspect-ratio:auto;object-position:90% center}
.visit-photo-home .visit-photo-card:not(:first-child)>button img{aspect-ratio:2.35}
.visit-photo-zoom{position:absolute;right:13px;bottom:13px;display:grid;place-items:center;background:#102c36b8;color:white;width:34px;height:34px;border-radius:50%;font-size:24px;line-height:1}
.visit-photo-card figcaption{padding-top:13px}.visit-photo-card h3{font-size:1.2rem;line-height:1.4;margin:0 0 5px}.visit-photo-card figcaption p{font-size:.85rem;color:var(--muted);margin:0;line-height:1.65}
.visit-photo-credit{display:block;font-size:.68rem;line-height:1.8;color:var(--muted);margin-top:7px}.visit-photo-credit a{text-decoration:underline;text-underline-offset:3px}
.visit-photo-footer{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.visit-equipment-heading{padding-top:60px;margin-bottom:24px}.visit-equipment-heading h2{font-size:1.8rem;margin-top:8px}
.visit-equipment-grid .visit-photo-card>button img{object-fit:contain;background:#e6e8e2}
.visit-lightbox{width:min(1200px,94vw);max-width:none;max-height:94dvh;border:0;padding:0;border-radius:12px;background:#f7f5ef;color:var(--ink);overflow:auto;box-shadow:0 28px 100px #0009}
.visit-lightbox::backdrop{background:#071b22dc;backdrop-filter:blur(5px)}body.photo-open{overflow:hidden}
.visit-photo-close{position:sticky;float:right;top:12px;margin:12px 12px -58px 0;z-index:2;min-height:44px;border:1px solid #ffffff60;background:#102c36eb;color:#fff;border-radius:8px;padding:8px 16px;cursor:pointer}
.visit-lightbox-image{background:#0e2730;display:grid;place-items:center;min-height:180px}.visit-lightbox-image img{display:block;width:100%;height:auto;max-height:70dvh;object-fit:contain}
.visit-lightbox-caption{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px 26px}.visit-lightbox-caption h2{font-size:1.4rem;margin:0 0 6px}.visit-lightbox-caption p{font-size:.9rem;margin:0;color:var(--muted)}
.visit-photo-controls{display:flex;align-items:center;gap:14px;white-space:nowrap;font-size:.875rem}.visit-photo-controls button{width:44px;height:44px;border:1px solid #b6c6bf;border-radius:50%;color:var(--ink);background:transparent;cursor:pointer}
.visit-credit-row{grid-template-columns:160px 1fr}.visit-credit-row>img{width:160px;height:100px;object-fit:cover;border-radius:8px}.visit-credit-row .visit-photo-credit{font-size:.85rem}
.visit-invitation .visit-hall-preview{display:block;position:relative;border-radius:10px;overflow:hidden;background:#18323b}.visit-hall-preview img{display:block;width:100%;height:240px;object-fit:cover}.visit-hall-preview>span{position:absolute;bottom:15px;left:16px;background:#18323be0;padding:6px 11px;color:#fff;font-size:.75rem;border-radius:4px}
.visit-guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;margin-top:26px}.visit-guide-card{display:block;background:#fffefa;border:1px solid var(--line);border-radius:12px;overflow:hidden}.visit-guide-card>img{display:block;width:100%;height:230px;object-fit:cover}.visit-guide-card:last-child>img{object-fit:contain;background:#d9e2db}.visit-guide-card>div{padding:24px}.visit-guide-card h2{font-size:1.5rem;margin:10px 0}.visit-guide-card p{font-size:.875rem;line-height:1.7;color:var(--muted);margin:0 0 12px}
.visit-guide-options{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-block:24px;border-block:1px solid var(--line)}.visit-guide-options a{display:flex;flex-direction:column;gap:8px}.visit-guide-options strong{font-size:1.1rem}.visit-guide-options span{font-size:.875rem;color:var(--muted)}.visit-guide-secondary{display:flex;gap:24px;flex-wrap:wrap;font-size:.8125rem;color:var(--muted);padding-bottom:20px}.visit-guide-secondary a{min-height:44px;align-content:center;text-decoration:underline;text-underline-offset:4px}
body[data-route='home'] #train-gallery{scroll-margin-top:62px}
.device-more{margin-top:20px;border-top:1px solid var(--line);padding-top:5px}.device-more>summary{font-size:.8125rem;color:var(--teal);cursor:pointer}.device-more p{font-size:.9rem;line-height:1.8}
.visit-secondary-tools{margin-top:36px;font-size:.875rem}.visit-secondary-tools>summary{cursor:pointer;color:var(--muted)}
@media(max-width:900px){.visit-guide-grid{gap:16px}.visit-guide-card>div{padding:18px}.visit-guide-card>img{height:190px}.visit-photo-grid{gap:24px 18px}.visit-hero .museum-hero-inner{min-height:560px}.visit-hero .museum-hero-copy{max-width:450px}}
@media(max-width:600px){
  .museum-hero.visit-hero{min-height:570px}.visit-hero .museum-hero-inner{min-height:570px;padding:40px 24px 100px;position:relative}.museum-hero.visit-hero .museum-hero-art{position:absolute;height:100%;inset:0}.museum-hero.visit-hero .museum-hero-art img{object-position:59% center}.museum-hero.visit-hero .museum-hero-art:after{background:linear-gradient(180deg,#0b2637ba 0%,#102d3638 52%,#102d3688 100%),linear-gradient(90deg,#102d3670,transparent)}
  .visit-hero .museum-hero-copy{max-width:100%}.visit-hero .museum-hero-lead{max-width:235px}.visit-hero .museum-scene-label{left:20px;right:20px;bottom:12px;max-width:none;display:block;width:fit-content}.visit-hero .museum-hero-caption{display:none}
  .visit-photo-grid,.visit-photo-home{grid-template-columns:1fr;gap:27px}.visit-photo-home .visit-photo-card:first-child{grid-row:auto;display:block}.visit-photo-home .visit-photo-card:first-child>button{min-height:0}.visit-photo-home .visit-photo-card:first-child img{position:static;height:auto;aspect-ratio:4/3}.visit-photo-home .visit-photo-card:not(:first-child)>button img{aspect-ratio:16/10}.visit-photo-card h3{font-size:1.13rem}.visit-photo-credit{font-size:.65rem}
  .visit-lightbox{max-height:96dvh;width:96vw;border-radius:9px}.visit-lightbox-caption{padding:18px;flex-direction:column;align-items:flex-start;gap:15px}.visit-lightbox-caption h2{font-size:1.25rem}.visit-lightbox-image img{max-height:64dvh}.visit-photo-controls{align-self:flex-end}.visit-credit-row{grid-template-columns:1fr}.visit-credit-row>img{width:100%;height:auto;max-height:220px;object-fit:contain}
  .visit-guide-grid{grid-template-columns:1fr;gap:20px}.visit-guide-card>img{height:190px}.visit-guide-card>div{padding:20px}.visit-guide-card h2{font-size:1.4rem}.visit-guide-options{grid-template-columns:1fr;gap:25px}.visit-invitation>.shell{grid-template-columns:1fr;gap:24px}.visit-hall-preview img{height:180px}.visit-equipment-heading{padding-top:40px}.visit-equipment-heading h2{font-size:1.6rem}
  body[data-route='home'] #train-gallery{scroll-margin-top:38px}
}
@media(prefers-reduced-motion:reduce){.visit-photo-card>button img{transition:none}.visit-photo-card>button:hover img{transform:none}}
@media(max-width:600px){
  .museum-hero.visit-hero{min-height:0;display:flex;flex-direction:column;background:#112e39}
  .visit-hero .museum-hero-inner{position:static;order:1;min-height:0;padding:34px 24px 30px;width:100%}
  .museum-hero.visit-hero .museum-hero-art{position:relative;order:2;inset:auto;left:auto;height:auto;min-height:0;width:100%}
  .museum-hero.visit-hero .museum-hero-art img{width:100%;height:auto;object-fit:contain;object-position:center;transform:none;display:block}
  .museum-hero.visit-hero .museum-hero-art:after{display:none}
  .visit-hero h1{font-size:clamp(2.8rem,12vw,3.6rem);margin-bottom:16px;line-height:1.14}
  .visit-hero .museum-kicker{font-size:.64rem;margin-bottom:18px;letter-spacing:0}
  .visit-hero .museum-hero-lead{max-width:none;font-size:.86rem;margin-bottom:19px}
  .visit-hero .museum-hero-actions{gap:16px}.visit-hero .museum-hero .museum-start{gap:20px}
  .visit-hero .museum-scene-label{bottom:8px;left:10px;right:auto;max-width:calc(100% - 20px);font-size:.6rem;padding:3px 7px}
}