@font-face{font-family:Campus;src:url('/fonts/campus-sans.woff2') format('woff2');font-weight:100 900;font-display:swap}
:root{--paper:#f3f5f1;--ink:#213c36;--dim:#586b64;--mute:#62736d;--accent:#ae4a29;--line:#dce4dc;--surface:#fffefa;--sans:Campus,'Microsoft YaHei','Segoe UI',sans-serif;font:16px/1.65 var(--sans);color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;overflow:hidden}button,input,select{font:inherit;color:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0}button:disabled{cursor:default;opacity:.4}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid #ae4a29;outline-offset:4px}[hidden]{display:none!important}a{color:inherit}#viewport{position:fixed;inset:0}#viewport>canvas{display:block;width:100%;height:100%}
header{position:fixed;inset:0 0 auto;z-index:8;display:flex;align-items:center;gap:24px;padding:26px 34px;pointer-events:none}header>*{pointer-events:auto}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;flex-shrink:0}.brand-mark{width:44px;height:48px;border:1px solid #315247;display:grid;place-items:center;font:20px Georgia,serif;letter-spacing:-2px}.brand-name{font-size:19px;font-weight:600;letter-spacing:2px}.brand small{display:block;font-size:12px;color:var(--dim);font-weight:400;letter-spacing:1px}.primary-nav{display:flex;align-items:center;gap:30px;margin:auto}.primary-nav button{background:transparent;padding:9px 0;font-size:15px;color:var(--dim);position:relative;white-space:nowrap}.primary-nav button.selected,.primary-nav button.playing{color:var(--ink)}.primary-nav button.selected:after,.primary-nav button.playing:after{content:'';position:absolute;bottom:0;left:calc(50% - 8px);height:3px;width:16px;background:var(--accent);border-radius:2px}.primary-nav b{font-weight:400;margin-right:6px}.header-right{display:flex;gap:20px;align-items:center;font-size:13px}.phase-name{white-space:nowrap;color:var(--dim)}.phase-name:before{content:'';display:inline-block;width:5px;height:5px;background:var(--accent);border-radius:50%;margin-right:8px}.header-right button{font-size:13px;background:transparent;white-space:nowrap;padding:7px 0}
.intro{position:fixed;left:36px;top:148px;z-index:3;pointer-events:none;max-width:350px}.eyebrow{font-size:11px;letter-spacing:3px;color:var(--dim)}.intro h1{font-size:clamp(34px,3vw,48px);line-height:1.4;font-weight:500;letter-spacing:-1px;margin:17px 0 14px}.intro h1 span{color:var(--accent)}.intro p{font-size:15px;margin:0;color:var(--dim)}.intro-tour{pointer-events:auto;margin-top:26px;padding:12px 17px;background:var(--ink);color:var(--surface);font-size:14px;border-radius:7px;display:flex;gap:25px;align-items:center}.intro-tour span{font-size:20px}
.campus-search{position:fixed;right:34px;top:128px;width:290px;z-index:9}.search-field{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid #e0e7df;border-radius:30px;padding:13px 18px;box-shadow:0 8px 28px #284d3610}.search-field input{border:0;background:transparent;width:100%;min-width:0;font-size:16px}.search-field kbd{font:13px var(--sans);color:#6b7d72}.search-symbol{position:relative;display:block;border:1.5px solid #61766c;border-radius:50%;width:13px;height:13px;flex-shrink:0}.search-symbol:after{content:'';position:absolute;width:6px;height:1.5px;background:#61766c;transform:rotate(45deg);right:-4px;bottom:-2px}#search-results{margin-top:10px;background:var(--surface);border:1px solid var(--line);box-shadow:0 12px 30px #213c361a;border-radius:12px;padding:15px}.results-heading{font-size:12px;color:var(--dim);display:flex;justify-content:space-between;margin:0 5px 8px}#search-results ul{padding:0;margin:0;list-style:none;max-height:min(45vh,370px);overflow:auto}#search-results li button{width:100%;text-align:left;display:flex;align-items:center;justify-content:space-between;background:transparent;padding:11px 7px;font-size:15px;border-radius:6px}#search-results li button:hover{background:#eff3e9}.result-type{color:var(--dim);font-size:11px;margin-left:12px;flex-shrink:0}.search-empty{font-size:14px;color:var(--dim)}
.building-card{position:fixed;left:36px;top:148px;width:300px;z-index:5;padding:23px 24px;background:var(--surface);border:1px solid #e3e9e0;border-radius:14px;box-shadow:0 14px 40px #294e3614}.card-eyebrow{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--dim)}.card-eyebrow button{width:30px;height:30px;font-size:24px;background:transparent;color:var(--dim)}.building-card h2{font-size:29px;font-weight:500;line-height:1.5;overflow-wrap:anywhere;margin:10px 0 14px}.building-card>p{font-size:16px;line-height:1.9;margin:0 0 23px;color:#465d51}.building-actions{display:grid;gap:8px}.building-actions button{font-size:14px;border-radius:7px;background:#edf2e8;padding:11px 14px}.building-actions .primary-action{background:var(--ink);color:var(--surface);display:flex;justify-content:space-between}.building-note{display:block;margin-top:16px;font-size:11px;color:var(--dim)}body.has-selection .intro{display:none}
.tools{position:fixed;z-index:5;right:34px;top:220px;display:flex;flex-direction:column;gap:8px}.tools button{width:54px;min-height:57px;padding:6px;background:var(--surface);color:var(--dim);border:1px solid #e1e8e0;border-radius:10px;box-shadow:0 4px 14px #31523d0c;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;line-height:1.5}.tool-icon{font-size:23px;line-height:1.2}.tools button.active{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.scene-panel{position:fixed;left:36px;bottom:65px;z-index:6}#viewpoints{display:flex;padding:5px;background:var(--surface);border:1px solid var(--line);box-shadow:0 8px 26px #2c4c3510;border-radius:11px;gap:3px}#viewpoints button{background:transparent;font-size:13px;padding:12px 15px;border-radius:6px;white-space:nowrap;color:var(--dim)}#viewpoints button.selected{color:var(--surface);background:var(--ink)}#archives{position:absolute;left:0;bottom:calc(100% + 12px);font-size:12px;color:var(--dim)}#archives summary{cursor:pointer;list-style:none;background:var(--surface);border:1px solid var(--line);padding:7px 12px;border-radius:6px;white-space:nowrap}#archives summary:after{content:' ⌃';margin-left:8px}#archives[open]{background:var(--surface);border:1px solid var(--line);padding:13px;border-radius:10px;min-width:270px}#archives[open] summary{border:0;padding:0}#scenes{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:12px}.scene-card{position:relative;background:#edf1e7;color:var(--ink);border:1px solid var(--line);border-radius:6px;min-height:65px;padding:7px;overflow:hidden}.scene-card img{display:none}.scene-card small{display:block;font-size:11px;color:var(--dim)}.scene-card span{font-size:13px}.scene-card.selected{border-color:var(--accent)}.scope-note{font-size:11px;margin:10px 0 0}
.guide-dock{position:fixed;right:31px;bottom:59px;width:218px;z-index:6;background:transparent}.guide-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:7px 11px 7px 14px;box-shadow:0 4px 18px #284d3610}.guide-heading>div{display:flex;align-items:center;gap:8px}.guide-heading strong{font-size:15px;font-weight:500}.guide-heading small{font-size:11px;color:var(--dim)}.guide-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#697c45;flex-shrink:0}.guide-heading button{height:26px;width:26px;background:transparent;font-size:23px;line-height:1}.guide-stage{height:245px;background:transparent}.guide-stage iframe{display:block;width:100%;height:100%;border:0;background:transparent;color-scheme:light}.guide-controls{display:flex;align-items:center;justify-content:space-between;gap:7px;background:var(--surface);border:1px solid var(--line);border-radius:9px;padding:8px 11px;font-size:11px;box-shadow:0 4px 18px #284d3610}#guide-state{color:var(--dim)}#voice-toggle{display:flex;align-items:center;gap:5px;background:transparent;font-size:12px;white-space:nowrap}#voice-toggle b{font-weight:400}#guide-expand{position:fixed;bottom:66px;right:34px;z-index:6;background:var(--surface);border:1px solid var(--line);padding:15px 18px;border-radius:28px;display:flex;gap:12px;align-items:center;box-shadow:0 5px 24px #284d3610;font-size:14px}
#caption-bar{position:fixed;left:50%;bottom:166px;transform:translateX(-50%);width:min(560px,calc(100vw - 600px));z-index:7;background:var(--surface);border:1px solid #d9e3d6;border-radius:12px;padding:15px 20px;box-shadow:0 10px 30px #284d3620}#caption-note{display:block;color:var(--dim);font-size:11px;margin-bottom:5px}#caption-text{font-size:18px;line-height:1.8;min-height:3.6em;margin:0;color:var(--ink)}.caption-controls{display:flex;justify-content:flex-end;align-items:center;gap:9px;margin-top:5px;font-size:11px;color:var(--dim)}.caption-controls button{background:transparent;font-size:14px;padding:2px 6px;color:var(--dim)}#caption-stop{margin-left:auto;font-size:12px}
#tour-progress{position:fixed;left:50%;bottom:64px;transform:translateX(-50%);width:340px;z-index:7;background:var(--surface);border:1px solid var(--line);border-radius:11px;padding:12px 17px;box-shadow:0 6px 24px #284d3614}.tour-heading{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--dim)}.tour-heading strong{font-size:12px;font-weight:500;color:var(--ink)}.tour-track{height:3px;border-radius:2px;background:#e5ebe0;margin:9px 0}.tour-track i{display:block;height:100%;width:0;background:var(--accent);transition:width .5s}.tour-controls{display:flex;gap:18px}.tour-controls button{font-size:12px;background:transparent;padding:3px 0}.tour-controls button:last-child{margin-left:auto;color:var(--dim)}body.touring .scene-panel{display:none}
footer{position:fixed;z-index:4;bottom:0;left:35px;right:35px;height:38px;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#4d6558;pointer-events:none}footer span:last-child{font-size:10px;letter-spacing:1px}#loading,#error{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);padding:28px 32px;background:var(--surface);border:1px solid var(--line);z-index:20;border-radius:12px;box-shadow:0 14px 50px #294d3620;text-align:center;width:min(360px,calc(100vw - 40px))}#loading strong,#loading>span{display:block}#loading strong{font-size:17px;font-weight:500;margin:15px 0 8px}#loading>span,#error p{font-size:13px;color:var(--dim)}.progress{height:3px;background:#e4eadf;margin-top:22px}.progress i{display:block;height:100%;background:var(--accent);width:0;transition:width .2s}.loader-line{height:3px;width:50px;background:#e4eadf;margin:auto;overflow:hidden}.loader-line i{display:block;height:100%;width:20px;background:var(--accent);animation:loading 1.2s infinite alternate}@keyframes loading{to{transform:translateX(30px)}}#error button{background:var(--ink);color:var(--surface);padding:10px 17px;border-radius:5px}#walk-help{position:fixed;left:50%;bottom:50px;transform:translateX(-50%);z-index:10;background:var(--surface);padding:15px 20px;border-radius:8px;font-size:14px}body.clean-view .intro,body.clean-view .tools,body.clean-view .scene-panel,body.clean-view .campus-search,body.clean-view .guide-dock,body.clean-view #guide-expand,body.clean-view #caption-bar,body.clean-view #tour-progress,body.clean-view .building-card,body.clean-view .brand,body.clean-view .primary-nav,body.clean-view .phase-name,body.clean-view footer{display:none}body.clean-view header{justify-content:flex-end}body.walking .intro,body.walking .building-card,body.walking .scene-panel{display:none}
@media(min-width:1700px){.intro{top:170px;left:48px}.building-card{top:170px;left:48px;width:320px}.guide-dock{width:240px}.guide-stage{height:290px}}
@media(max-width:1150px){header{padding:22px 25px;gap:16px}.brand-name{font-size:16px}.brand small{font-size:11px}.primary-nav{gap:22px}.phase-name{display:none}.header-right{gap:15px}.intro{left:26px;max-width:280px;top:132px}.intro h1{font-size:35px}.intro p{font-size:13px}.campus-search{right:25px;top:118px;width:260px}.building-card{left:26px;top:132px;width:270px;padding:20px}.building-card h2{font-size:26px}.building-card>p{font-size:15px}.tools{right:25px;top:220px}.tools button{width:47px;min-height:52px}.guide-dock{right:23px;width:180px;bottom:57px}.guide-stage{height:205px}.guide-heading{padding-left:10px}.guide-heading small{font-size:10px}.guide-heading>div{gap:5px}.guide-controls{padding:7px 9px}.scene-panel{left:26px}#viewpoints button{padding:11px 12px}#caption-bar{left:27px;transform:none;bottom:146px;width:min(540px,calc(100vw - 260px))}#tour-progress{left:26px;transform:none}.guide-controls #guide-state{font-size:10px}}
@media(max-width:760px){header{padding:16px 18px;flex-wrap:wrap;gap:12px}.brand-mark{width:35px;height:39px;font-size:17px}.brand-name{font-size:15px}.brand small{font-size:10px}.primary-nav{order:3;width:100%;justify-content:center;gap:38px}.primary-nav button{font-size:14px;padding:5px 0}.header-right{margin-left:auto;gap:12px}.header-right button{font-size:12px}.campus-search{top:120px;left:18px;right:18px;width:auto}.search-field{padding:11px 17px}.intro{top:190px;left:21px;max-width:280px}.intro h1{font-size:30px;margin:8px 0;line-height:1.4}.intro .eyebrow{font-size:10px}.intro p{font-size:12px}.intro-tour{font-size:12px;padding:8px 12px;margin-top:15px}.tools{right:16px;top:205px;gap:6px}.tools button{width:43px;min-height:48px;font-size:10px}.tool-icon{font-size:21px}.building-card{top:190px;left:18px;width:calc(100vw - 94px);max-width:310px;padding:17px}.building-card h2{font-size:23px;margin:5px 0 10px}.building-card>p{font-size:14px;line-height:1.8;margin-bottom:12px}.building-actions{grid-template-columns:1fr 1fr;gap:7px}.building-actions button{font-size:12px;padding:10px 8px}.building-note{display:none}.scene-panel{left:18px;bottom:44px;right:18px}#viewpoints{justify-content:space-between;gap:0}#viewpoints button{font-size:12px;padding:10px 9px;flex:1}#archives{bottom:calc(100% + 9px)}.guide-dock{width:140px;right:15px;bottom:113px}.guide-heading{padding:5px 8px}.guide-heading small{display:none}.guide-heading strong{font-size:13px}.guide-stage{height:153px}.guide-controls{font-size:10px;gap:3px;padding:7px}.guide-controls #guide-state{font-size:10px}#voice-toggle{font-size:10px;gap:2px}#guide-expand{right:18px;bottom:115px;font-size:12px;padding:10px 13px}#caption-bar{left:18px;bottom:125px;width:calc(100vw - 186px);padding:12px 13px;max-width:none;min-width:0}#caption-text{font-size:16px;line-height:1.8;min-height:0}#caption-note{font-size:10px}.caption-controls{gap:3px;flex-wrap:wrap}#caption-stop{font-size:11px}#tour-progress{left:18px;right:18px;bottom:44px;width:auto;padding:9px 14px}.tour-controls button{font-size:12px}footer{left:18px;right:18px;height:30px;font-size:10px}footer span:last-child{display:none}#search-results ul{max-height:38vh}}
@media(max-width:370px){.brand-name{font-size:13px}.brand-mark{width:30px}.brand{gap:7px}.header-right{gap:9px}.header-right button{font-size:11px}.intro h1{font-size:27px}.intro p{max-width:220px}.guide-dock{width:117px;right:13px}.guide-stage{height:132px}.guide-controls{padding:6px}.guide-controls #guide-state{display:none}.guide-controls #voice-toggle{margin:auto}#caption-bar{width:calc(100vw - 157px);padding:10px}#caption-text{font-size:15px}.building-actions{grid-template-columns:1fr}.building-card>p{font-size:13px}#viewpoints button{font-size:11px;padding:10px 6px}}
@media(max-height:650px) and (min-width:761px){header{padding-top:14px}.intro,.building-card{top:110px}.intro h1{font-size:30px}.guide-stage{height:135px}.guide-dock{width:160px;bottom:48px}.tools{top:190px;flex-direction:row}.tools button{min-height:43px}.scene-panel{bottom:49px}.campus-search{top:103px}.building-card>p{font-size:14px;margin-bottom:12px}.building-card h2{margin:4px 0 8px}.building-card{padding:15px 18px}.building-note{display:none}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}

/* Product revision: explore buildings visually, without sequential narration. */
.header-right{margin-left:auto}.school-logo{width:245px;height:auto;object-fit:contain;filter:brightness(0) saturate(100%) invert(20%) sepia(15%) saturate(1024%) hue-rotate(112deg) brightness(92%);order:5;margin-left:7px}.brand-name{font-size:20px;letter-spacing:1px}.brand small{font-size:10px;letter-spacing:1.7px}.building-actions{grid-template-columns:1fr}.has-selection .intro{display:none}.guide-stage{height:245px}.guide-heading{border-radius:12px}.guide-dock{bottom:60px}body.clean-view .school-logo{display:none}
#search-results li button span{overflow-wrap:anywhere}.intro{max-width:calc(100vw - 110px)}
@media(max-width:1150px){.school-logo{width:218px}.guide-stage{height:205px}}
@media(max-width:760px){header{gap:10px;flex-wrap:nowrap;padding:15px 18px}.school-logo{width:144px;margin:0;order:0}.header-right{gap:9px;flex-wrap:wrap;justify-content:flex-end;max-width:152px}.header-right button{font-size:11px;padding:0}.brand-name{font-size:17px}.brand small{font-size:8px;letter-spacing:.5px}.campus-search{top:104px}.intro{top:174px;max-width:calc(100vw - 100px)}.intro h1{font-size:29px}.intro p{font-size:13px}.building-card{top:174px}.tools{top:190px}.guide-stage{height:153px}.guide-dock{bottom:113px}.guide-heading strong{font-size:13px}}
@media(max-width:370px){.school-logo{width:125px}.brand-name{font-size:15px}.header-right{max-width:135px}.intro h1{font-size:26px}.guide-stage{height:132px}}
@media(max-height:650px) and (min-width:761px){.guide-stage{height:135px}.tools{top:190px}}