:root{color-scheme:dark;--bg:#060b13;--panel:#0c1420;--panel2:#0a121c;--text:#e5eef4;--muted:#a1b0c0;--line:#263441;--line2:#354757;--cyan:#8aedff;--pink:#ff70b6;--amber:#ffc46b}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.6}
a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:wait;opacity:.5}
button:focus-visible,a:focus-visible,#viewer:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
header{height:90px;max-width:1600px;margin:auto;padding:0 4vw;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}
.wordmark{display:flex;gap:13px;align-items:center;font-weight:600;font-size:14px;letter-spacing:1.5px;white-space:nowrap}
.wordmark small{display:block;font-size:11px;letter-spacing:4px;color:var(--muted);line-height:1.1}
.mark{font-size:22px;color:var(--cyan);border-right:1px solid var(--line);padding-right:16px;letter-spacing:-2px}
nav{display:flex;gap:30px;font-size:14px}nav a:hover{color:var(--cyan)}
.header-code{font-family:ui-monospace,monospace;font-size:12px;letter-spacing:2px;color:var(--muted);white-space:nowrap}
main{max-width:1600px;margin:auto;padding:0 4vw}
.intro{display:flex;justify-content:space-between;align-items:end;padding:42px 0 25px;gap:30px}
.eyebrow{font-family:ui-monospace,monospace;font-size:12px;letter-spacing:2px;color:var(--cyan);margin:0 0 10px}
h1{margin:0;font-weight:500;font-size:38px;letter-spacing:3px;line-height:1.3}
h1 span{font-size:12px;letter-spacing:4px;display:block;color:var(--muted);margin-top:10px}
.intro-note{color:var(--muted);font-size:14px;line-height:1.9;margin:0 0 1px;text-align:right}
.viewer-shell{border:1px solid var(--line2);background:#07121c;position:relative}
.viewer-shell:fullscreen{display:flex;flex-direction:column;height:100%;width:100%;background:var(--bg)}
.viewer-shell:fullscreen #viewer{height:auto;flex:1}
#viewer{height:clamp(360px,51vw,640px);position:relative;overflow:hidden;background:#08131e}
#scene-canvas{display:block;width:100%;height:100%;opacity:0;transition:opacity .7s;touch-action:none}
#viewer.loaded #scene-canvas{opacity:1}
.viewer-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.24;filter:saturate(.65);transition:opacity .6s;pointer-events:none}
#viewer.loaded .viewer-poster{opacity:0}
#load-state{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;width:min(80%,430px);font-size:14px;color:#ecf4fb}
.loading-line{display:block;width:120px;height:2px;background:var(--cyan);margin:auto;box-shadow:0 0 18px var(--cyan);animation:pulse 1.5s infinite}
#viewer.loaded #load-state{display:none}
.viewer-top{position:absolute;top:23px;left:26px;right:26px;display:flex;justify-content:space-between;pointer-events:none;font-family:ui-monospace,monospace;font-size:12px;letter-spacing:1.8px;color:#c6d3df;text-shadow:0 1px 8px #000}
.view-label{border-left:2px solid var(--pink);padding-left:10px}#view-status{color:var(--cyan);letter-spacing:1px}
.scene-coordinate{position:absolute;bottom:22px;left:26px;font-family:ui-monospace,monospace;line-height:1.8;font-size:12px;letter-spacing:2px;pointer-events:none;color:#d3e0ec;text-shadow:0 1px 8px #000}
.scene-coordinate span{font-size:10px;color:#96aabc}
.viewer-controls{padding:15px 19px;display:flex;justify-content:space-between;gap:12px;background:#0c1722;border-top:1px solid #263744;flex-wrap:wrap}
.presets,.tool-controls{display:flex;gap:7px;flex-wrap:wrap}
.viewer-controls button{border:1px solid #344552;border-radius:2px;background:transparent;font-size:14px;padding:8px 16px;transition:background .2s}
.viewer-controls button:hover{background:#1b2e3c}
.viewer-controls button.active,.viewer-controls button[aria-pressed=true]{background:#16323d;border-color:#609eae;color:#bdf5ff}
.tool-controls button{border-color:transparent;color:#c3d1de}
.viewer-caption{display:flex;justify-content:space-between;gap:28px;margin-top:14px;color:var(--muted);font-size:12px;line-height:1.7}
.viewer-caption p{margin:0}.viewer-caption p:last-child{max-width:600px;text-align:right}
.stills,.film,.data,.doc-sec,.downloads{padding-top:76px;scroll-margin-top:24px}
.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:23px;gap:20px}
h2{font-size:25px;font-weight:500;letter-spacing:1px;line-height:1.4;margin:0}
.section-heading>span{font-size:13px;color:var(--muted)}
.gallery{display:grid;grid-template-columns:1fr 1fr;gap:30px 24px}
.gallery-card{display:block;background:none;border:0;text-align:left;padding:0;min-width:0;width:100%}
.feature-card{grid-column:1/-1}.gallery-item{min-width:0}
.image-wrap{position:relative;overflow:hidden;border:1px solid #293a48;background:#050a11}
.gallery-card img{width:100%;height:auto;display:block;transition:transform .5s;aspect-ratio:16/9;object-fit:cover}
.gallery-card:hover img{transform:scale(1.025)}
.expand{position:absolute;bottom:18px;right:18px;font-size:13px;background:#07111dd9;padding:6px 12px;border:1px solid #61788e;opacity:0;transition:opacity .2s}
.gallery-card:hover .expand,.gallery-card:focus-visible .expand{opacity:1}
.card-caption{display:flex;align-items:center;justify-content:space-between;gap:8px;padding-top:13px;font-size:15px}
.card-caption b{color:var(--cyan);font-family:ui-monospace,monospace;font-size:12px;margin-right:16px;font-weight:400}
.card-caption small{font-family:ui-monospace,monospace;font-size:11px;letter-spacing:1.5px;color:var(--muted)}
.card-meta{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted);margin-top:4px;font-family:ui-monospace,monospace}
.card-meta a{color:var(--cyan)}.card-meta a:hover{text-decoration:underline}
video{display:block;width:100%;border:1px solid #293a48;background:#000;aspect-ratio:16/9}
.film-note{margin:14px 0 0;color:var(--muted);font-size:13px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.film-note a{color:var(--cyan)}
.sheet{margin-top:26px}.sheet .gallery-card img{aspect-ratio:auto}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.stat{padding:22px 22px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--panel2)}
.stat .num{font-family:ui-monospace,monospace;font-size:30px;color:#fff;letter-spacing:1px;line-height:1.2}
.stat:nth-child(4n+1) .num{color:var(--cyan)}.stat:nth-child(4n+3) .num{color:var(--pink)}
.stat .lbl{font-size:14px;margin-top:8px}.stat .sub{font-size:12px;color:var(--muted);margin-top:2px}
.doc{border:1px solid var(--line2);background:var(--panel2);padding:clamp(20px,3.4vw,46px) clamp(18px,4vw,56px);font-size:15px;line-height:1.85;position:relative}
.doc.collapsed{max-height:720px;overflow:hidden}
.doc.collapsed::after{content:"";position:absolute;left:0;right:0;bottom:0;height:200px;background:linear-gradient(transparent,var(--panel2) 85%);pointer-events:none}
.doc-toggle{display:block;margin:16px auto 0;border:1px solid #344552;background:transparent;padding:9px 22px;font-size:14px;border-radius:2px}
.doc-toggle:hover{background:#1b2e3c}
.doc h1{font-size:24px;letter-spacing:1px;margin:0 0 18px}
.doc h2{font-size:20px;margin:40px 0 14px;padding-top:26px;border-top:1px solid var(--line)}
.doc h3{font-size:16px;color:var(--cyan);font-weight:600;margin:28px 0 8px}
.doc blockquote{margin:0 0 20px;padding:10px 18px;border-left:2px solid var(--pink);background:#0e1826;color:#cfdae4}
.doc blockquote p{margin:6px 0}
.doc code{font-family:ui-monospace,monospace;font-size:.87em;background:#132230;color:#bdf5ff;padding:1px 6px;border-radius:2px;word-break:break-all}
.doc pre{background:#050a11;border:1px solid var(--line);padding:14px 16px;overflow-x:auto}
.doc pre code{background:none;padding:0;color:#d9e6f0;word-break:normal;white-space:pre}
.doc strong{color:#fff}.doc li{margin:4px 0}.doc ul,.doc ol{padding-left:1.4em}
.tbl{overflow-x:auto;margin:10px 0 20px;border:1px solid var(--line)}
.doc table{border-collapse:collapse;width:100%;min-width:560px;font-size:14px}
.doc th,.doc td{padding:9px 13px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.doc th{background:#10202c;color:var(--cyan);font-weight:500}
.dls{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.dl{display:grid;grid-template-columns:1fr auto;gap:2px 14px;padding:18px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--panel2);transition:background .2s}
.dl:hover{background:#12202c}.dl .fn{font-family:ui-monospace,monospace;color:var(--cyan);font-size:14px}
.dl .fs{grid-row:1/3;grid-column:2;align-self:center;font-family:ui-monospace,monospace;font-size:12px;color:var(--muted)}
.dl .ds{font-size:13px;color:var(--muted)}
footer{max-width:1472px;margin:78px auto 0;padding:28px 0 34px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:20px;font-family:ui-monospace,monospace;font-size:12px;color:var(--muted)}
footer>span{color:var(--cyan);letter-spacing:2px}footer p{margin:0}footer a{white-space:nowrap}
dialog{padding:20px;max-width:95vw;width:1400px;border:1px solid #3f586b;background:#08111b;color:var(--text);max-height:95vh}
dialog::backdrop{background:#000e;backdrop-filter:blur(8px)}
.lightbox-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:14px}
.lightbox-bar h2{font-size:16px}.lightbox-tools{display:flex;gap:8px;align-items:center}
.lightbox-bar button,.lightbox-bar a{background:#14232e;border:1px solid #465c6b;padding:8px 14px;font-size:14px}
dialog img{display:block;width:100%;max-height:calc(95vh - 150px);object-fit:contain}
dialog p{font-size:12px;color:var(--muted);margin:10px 0 0}
.no-script{position:absolute;inset:40% 20%;background:#07111de8;padding:20px;z-index:2}
@keyframes pulse{50%{opacity:.3}}
@media(max-width:1550px){footer{margin-left:4vw;margin-right:4vw}}
@media(max-width:1100px){nav{gap:18px}.header-code{display:none}.stats{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){header{height:auto;min-height:73px;padding:12px 5vw;flex-wrap:wrap;gap:10px}.wordmark{font-size:11px;gap:10px}.wordmark small{font-size:9px;letter-spacing:2px}.mark{font-size:20px;padding-right:10px}
nav{gap:14px;font-size:13px;overflow-x:auto;scrollbar-width:none;max-width:100%}nav a{white-space:nowrap}
main{padding:0 5vw}.intro{padding-top:30px;display:block}h1{font-size:28px;letter-spacing:2px}.intro-note{margin-top:16px;font-size:14px;text-align:left}.intro-note br{display:none}
#viewer{height:400px}.viewer-top{top:18px;left:17px;right:17px;font-size:10px}.scene-coordinate{left:17px;bottom:15px;font-size:11px}
.viewer-controls{padding:12px;gap:9px}.presets{width:100%;display:grid;grid-template-columns:1fr 1fr}.viewer-controls button{font-size:13px;padding:8px 11px}.tool-controls{margin-left:auto}
.viewer-caption{display:block;font-size:12px}.viewer-caption p:last-child{text-align:left;margin-top:8px}
.stills,.film,.data,.doc-sec,.downloads{padding-top:52px}.section-heading{display:block}h2{font-size:23px}.section-heading>span{display:block;margin-top:12px}
.gallery{display:block}.gallery-card{margin-bottom:26px}.card-caption{font-size:14px}.card-caption small{font-size:10px}.card-caption b{margin-right:10px}.expand{opacity:1;bottom:10px;right:10px;font-size:12px}
.stats{grid-template-columns:1fr 1fr}.stat{padding:16px 14px}.stat .num{font-size:22px}
.doc{font-size:14.5px}.doc.collapsed{max-height:560px}
footer{margin:50px 5vw 0;align-items:start;flex-wrap:wrap}footer p{order:3;width:100%;font-family:inherit;font-size:12px}
dialog{padding:12px;width:96vw}.lightbox-bar{margin-bottom:10px}.lightbox-bar h2{font-size:14px}.lightbox-bar button,.lightbox-bar a{padding:6px 9px;font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}