@import url('https://fonts.googleapis.com/css2?family=Ma+Shan+Zheng&family=Noto+Serif+SC:wght@400;600;700;900&family=Oswald:wght@400;500;600&display=swap');

:root{--ink:#10130f;--museum:#151b18;--bronze:#557166;--jade:#9ed9bb;--scan:#e7ff48;--paper:#eee9dc;--clay:#d96e48;--indigo:#25244d;--violet:#6659d8;--line:rgba(238,233,220,.2);--serif:"Noto Serif SC",serif;--condensed:"Oswald",sans-serif;--display:"Ma Shan Zheng",cursive}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--museum);color:var(--paper);font-family:var(--serif);overflow-x:hidden}.grain{position:fixed;inset:0;pointer-events:none;z-index:20;opacity:.14;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E")}.section-shell{width:min(1320px,calc(100% - 72px));margin:auto}.topbar{height:84px;display:flex;align-items:center;justify-content:space-between;padding:0 36px;border-bottom:1px solid var(--line);position:relative;z-index:10}.brand{color:var(--paper);text-decoration:none;display:flex;align-items:center;gap:12px;font-weight:700}.brand small{display:block;font-family:var(--condensed);font-size:10px;letter-spacing:.18em;font-weight:400;margin-top:2px;color:#a9b4ab}.brand-seal{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--scan);color:var(--scan);font-family:var(--display);font-size:22px;transform:rotate(-3deg)}.topbar nav{display:flex;gap:30px}.topbar nav a,.mini-cta{font-family:var(--condensed);font-size:12px;letter-spacing:.12em;color:#cbd2cc;text-decoration:none}.mini-cta{border-bottom:1px solid var(--scan);color:var(--scan);padding-bottom:4px}.hero{min-height:760px;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:42px;position:relative;padding:70px 0 90px}.hero:before{content:"";position:absolute;left:-12vw;top:0;width:55vw;height:55vw;background:radial-gradient(circle,rgba(85,113,102,.22),transparent 65%);pointer-events:none}.eyebrow,.section-index,.section-kicker,.archive-no{font-family:var(--condensed);letter-spacing:.18em;text-transform:uppercase}.eyebrow{font-size:12px;color:#bcc6bd;display:flex;gap:10px;align-items:center}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--scan);box-shadow:0 0 18px var(--scan)}.archive-no{font-size:11px;color:#77847c;margin:54px 0 8px}.hero h1{font-size:clamp(74px,9vw,142px);line-height:.78;margin:0;font-weight:900;letter-spacing:-.09em}.hero h1 span{display:block}.hero h1 .scan-type{color:var(--scan);margin-left:1em;position:relative;font-family:var(--display);font-weight:400;letter-spacing:.01em}.hero h1 .scan-type:after{content:"SCANNING";font-family:var(--condensed);font-size:10px;letter-spacing:.2em;position:absolute;right:10%;top:12px;color:#181d19;background:var(--scan);padding:5px 8px}.hero-lead{max-width:650px;font-size:18px;line-height:1.9;color:#c9d0ca;margin:42px 0 30px}.hero-lead strong{color:var(--scan)}.hero-actions{display:flex;gap:12px}.button{min-height:48px;padding:0 22px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);font:600 13px var(--serif);letter-spacing:.05em;text-decoration:none;cursor:pointer;transition:.25s}.button.primary{background:var(--scan);color:#141813;border-color:var(--scan)}.button.primary:hover{box-shadow:7px 7px 0 var(--bronze);transform:translate(-2px,-2px)}.button.ghost{color:var(--paper)}.button.dark{background:var(--ink);color:var(--paper);border-color:var(--ink);width:100%}.button:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid #fff;outline-offset:3px}.hero-facts{display:grid;grid-template-columns:repeat(3,1fr);margin-top:56px;border-top:1px solid var(--line);padding-top:18px;max-width:650px}.hero-facts div{border-right:1px solid var(--line);padding-left:18px}.hero-facts div:first-child{padding-left:0}.hero-facts b{display:block;font:10px var(--condensed);letter-spacing:.18em;color:#6f8178}.hero-facts span{display:block;font-size:13px;margin-top:8px}.scan-chamber{height:610px;border:1px solid rgba(158,217,187,.34);position:relative;overflow:hidden;background:linear-gradient(145deg,rgba(158,217,187,.06),rgba(0,0,0,.18)),radial-gradient(circle at 50% 46%,rgba(158,217,187,.18),transparent 42%)}.chamber-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(158,217,187,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(158,217,187,.08) 1px,transparent 1px);background-size:38px 38px;mask-image:linear-gradient(to bottom,transparent,#000 20%,#000 80%,transparent)}.scan-chamber:before,.scan-chamber:after{content:"";position:absolute;width:70px;height:70px;border-color:var(--scan)}.scan-chamber:before{left:18px;top:18px;border-left:2px solid;border-top:2px solid}.scan-chamber:after{right:18px;bottom:18px;border-right:2px solid;border-bottom:2px solid}.scan-line{position:absolute;left:3%;right:3%;height:2px;top:20%;z-index:3;background:linear-gradient(90deg,transparent,var(--scan),transparent);box-shadow:0 0 28px 8px rgba(231,255,72,.28);animation:scan 4s ease-in-out infinite alternate}.artifact-tree{position:absolute;left:50%;bottom:108px;width:260px;height:390px;transform:translateX(-50%);filter:drop-shadow(0 16px 25px rgba(0,0,0,.5))}.tree-trunk{position:absolute;left:50%;bottom:35px;width:28px;height:270px;transform:translateX(-50%);background:linear-gradient(90deg,#375148,#8db4a2 45%,#405e53);clip-path:polygon(32% 0,68% 0,82% 100%,18% 100%)}.tree-base{position:absolute;left:50%;bottom:0;width:170px;height:52px;transform:translateX(-50%);border:18px solid #557a6c;border-radius:50%;box-shadow:inset 0 0 0 2px #9ab7aa}.tree-crown{position:absolute;left:50%;width:250px;height:100px;transform:translateX(-50%);border-top:10px solid #668c7d;border-radius:50%}.crown-one{top:82px}.crown-two{top:174px;width:210px}.tree-crown i{position:absolute;width:38px;height:58px;border:8px solid #668c7d;border-radius:50% 50% 42% 42%;top:-56px}.tree-crown i:nth-child(1){left:20px;transform:rotate(-20deg)}.tree-crown i:nth-child(2){left:105px;top:-79px}.tree-crown i:nth-child(3){right:20px;transform:rotate(20deg)}.target{position:absolute;font:10px var(--condensed);letter-spacing:.14em;color:var(--jade);border-left:1px solid var(--scan);padding-left:9px}.target-a{left:28px;top:26%}.target-b{right:28px;top:47%}.target-c{left:40px;bottom:23%}.chamber-label{position:absolute;left:28px;bottom:24px}.chamber-label b{font:22px var(--condensed);color:var(--scan)}.chamber-label span{font-size:11px;display:block;color:#9cad9f;margin-top:2px}.vertical-mark{position:absolute;right:-28px;bottom:90px;writing-mode:vertical-rl;font:10px var(--condensed);letter-spacing:.26em;color:#617067}.mission{display:grid;grid-template-columns:.8fr 1.2fr;gap:100px;padding:130px 0;border-top:1px solid var(--line)}.section-index{color:var(--scan);font-size:11px}.section-intro h2,.paths h2,.city-callout h2,.register h2{font-size:clamp(42px,5vw,74px);line-height:1.18;margin:16px 0 24px;letter-spacing:-.05em}.section-intro>p:last-child,.city-callout>p{line-height:1.9;color:#aeb8b0;max-width:540px}.mission-ledger{border-top:1px solid var(--line)}.mission-ledger article{min-height:150px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:70px 1fr 40px;align-items:center;gap:18px;position:relative}.mission-ledger article:before{content:"";position:absolute;inset:0;background:var(--scan);transform:scaleX(0);transform-origin:left;transition:.4s;z-index:-1}.mission-ledger article:hover:before{transform:scaleX(1)}.mission-ledger article:hover{color:var(--ink)}.mission-ledger span{font:12px var(--condensed);letter-spacing:.15em}.mission-ledger b{font-size:22px}.mission-ledger p{font-size:13px;line-height:1.7;color:#9aa69d}.mission-ledger article:hover p{color:#3e473f}.mission-ledger em{font:50px var(--condensed);font-style:normal;color:#36413b}.paths{padding:110px 0 150px}.section-kicker{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px;font-size:10px;color:#839087}.paths h2{max-width:850px;margin:48px 0 60px}.path-grid{display:grid;grid-template-columns:repeat(5,1fr);border-left:1px solid var(--line)}.path-card{padding:24px 20px 36px;border-right:1px solid var(--line);border-top:1px solid var(--line);border-bottom:1px solid var(--line);min-height:310px;position:relative;transition:.35s}.path-card:hover{background:var(--paper);color:var(--ink);transform:translateY(-12px)}.path-icon{display:block;font-size:48px;color:var(--scan);margin-bottom:70px}.path-card:hover .path-icon{color:var(--clay)}.path-card small{font:10px var(--condensed);letter-spacing:.15em;color:#6f7f75}.path-card h3{font-size:21px;margin:10px 0 12px}.path-card p{font-size:12px;line-height:1.75;color:#909c93}.path-card:hover p{color:#5a625c}.demos{padding:90px 0 140px}.section-intro.compact{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:68px}.section-intro.compact h2{margin-top:0}.demo-stack{display:grid;gap:30px}.demo-card{border:1px solid var(--line);background:#111613;padding:32px;opacity:0;transform:translateY(28px);transition:.7s}.demo-card.is-visible{opacity:1;transform:none}.demo-head{display:grid;grid-template-columns:100px 1fr 1fr;align-items:end;border-bottom:1px solid var(--line);padding-bottom:25px;margin-bottom:28px}.demo-head span{font:11px var(--condensed);letter-spacing:.16em;color:var(--scan)}.demo-head h3{font-size:32px;margin:0}.demo-head p{margin:0;color:#9ca89e;font-size:13px;justify-self:end}.chat-workbench{display:grid;grid-template-columns:250px 1fr;gap:24px}.artifact-picker{display:grid;gap:8px}.artifact-option{background:transparent;border:1px solid var(--line);color:var(--paper);text-align:left;padding:13px;display:flex;align-items:center;gap:12px;cursor:pointer;font-family:var(--serif)}.artifact-option.active{border-color:var(--scan);background:rgba(231,255,72,.06)}.mini-artifact{width:48px;height:48px;display:grid;place-items:center;background:#2a352f;color:var(--jade);font-family:var(--display);font-size:22px}.bronze-shape:before{content:"♜";font-size:27px}.chat-panel{background:#1a211d;padding:30px;min-height:300px;display:flex;flex-direction:column}.chat-meta{display:flex;justify-content:space-between;font-size:12px}.live-chip{font:10px var(--condensed);letter-spacing:.12em;color:var(--scan)}.chat-panel blockquote{font-size:24px;line-height:1.75;margin:36px 0 auto;max-width:900px}.mode-switch{display:flex;gap:8px;margin-top:26px}.mode-switch button{background:transparent;border:1px solid var(--line);color:#aeb8b0;padding:9px 12px;cursor:pointer}.mode-switch button.active{background:var(--scan);color:var(--ink);border-color:var(--scan)}.source-line{font-size:10px;color:#77847b;margin:16px 0 0}.demo-card.light{background:var(--paper);color:var(--ink)}.demo-card.light .demo-head{border-color:rgba(16,19,15,.18)}.demo-card.light .demo-head span{color:#966047}.demo-card.light .demo-head p{color:#6e716b}.scanner-workbench{display:grid;grid-template-columns:320px 1fr;gap:24px}.upload-bay{border:1px solid rgba(16,19,15,.18);padding:20px;display:grid;gap:12px}.upload-preview{height:230px;border:0;background:#d9d0bd;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;overflow:hidden;color:var(--ink)}.upload-preview:after{content:"";position:absolute;inset:12px;border:1px dashed rgba(16,19,15,.3)}.upload-preview img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.upload-preview b,.upload-preview small{position:relative;z-index:1}.upload-preview small{font-size:9px;margin-top:5px}.upload-horse{font:88px var(--display);color:#4f6156}.upload-bay label{font-size:11px;margin-top:3px}.upload-bay select{height:44px;background:transparent;border:1px solid rgba(16,19,15,.28);padding:0 10px;font-family:var(--serif)}.archive-result{border:1px solid rgba(16,19,15,.18);padding:24px}.result-state{display:flex;align-items:center;gap:15px;font:12px var(--condensed);letter-spacing:.15em}.result-state:after{content:"";height:1px;flex:1;background:rgba(16,19,15,.15);order:1}.result-state i{height:3px;background:var(--clay);width:100%;transition:.1s}.archive-result dl{display:grid;grid-template-columns:1fr 1fr;margin:32px 0 16px}.archive-result dl div{padding:15px;border-top:1px solid rgba(16,19,15,.16)}.archive-result dl div:nth-child(odd){border-right:1px solid rgba(16,19,15,.16)}.archive-result .wide{grid-column:1/-1;border-right:0!important}.archive-result .accent{background:var(--scan)}.archive-result dt{font-size:10px;color:#77796f}.archive-result dd{margin:8px 0 0;font-weight:700}.archive-result>p{font-size:10px;color:#77796f}.map-demo{background:#1a1934}.map-workbench{display:grid;grid-template-columns:1fr 320px;gap:24px}.china-field{height:520px;position:relative;overflow:hidden;background:radial-gradient(circle at 55% 45%,rgba(102,89,216,.32),transparent 45%),linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:auto,34px 34px,34px 34px}.map-contour{position:absolute;inset:10% 8%;background:#302f5a;clip-path:polygon(11% 31%,27% 19%,41% 26%,51% 14%,65% 23%,78% 19%,89% 37%,85% 51%,94% 63%,77% 71%,65% 84%,51% 75%,39% 84%,30% 69%,13% 62%,6% 45%);border:1px solid #766de0}.city-node{position:absolute;left:var(--x);top:var(--y);border:0;background:transparent;color:#a8a6c9;cursor:pointer;transform:translate(-50%,-50%);z-index:2}.city-node i{display:block;width:8px;height:8px;border:1px solid #aaa6d9;border-radius:50%;margin:auto}.city-node span{display:block;font:10px var(--serif);margin-top:5px;white-space:nowrap}.city-node.lit i{background:var(--scan);border-color:var(--scan);box-shadow:0 0 18px 7px rgba(231,255,72,.35)}.city-node.active span{color:var(--scan)}.city-inspector{border:1px solid rgba(255,255,255,.14);padding:28px;display:flex;flex-direction:column}.inspector-code{font:10px var(--condensed);letter-spacing:.16em;color:#8e8bc0}.city-inspector h4{font-size:55px;margin:30px 0 6px}.city-inspector>p{color:#aaa8c7;font-size:12px}.city-stat{margin:auto 0 32px;border-top:1px solid rgba(255,255,255,.15);padding-top:22px}.city-stat b{font:70px var(--condensed);display:block;color:var(--scan)}.city-stat span{font-size:12px}.city-inspector small{font-size:9px;color:#78769c;margin-top:10px}.schedule{padding:120px 0;display:grid;grid-template-columns:.75fr 1.25fr;gap:100px;border-top:1px solid var(--line)}.schedule .section-intro.compact{display:block;margin:0}.timeline{border-top:1px solid var(--line)}.timeline article{display:grid;grid-template-columns:90px 1fr;gap:20px;border-bottom:1px solid var(--line);padding:20px 0}.timeline time{font:22px var(--condensed);color:var(--scan)}.timeline b{font-size:16px}.timeline p{margin:5px 0 0;color:#89968d;font-size:11px}.cities{padding:120px 0 160px;position:relative}.city-callout{max-width:760px}.text-link{display:inline-block;margin-top:30px;color:var(--scan);text-decoration:none;border-bottom:1px solid;padding-bottom:6px}.city-marquee{position:absolute;left:50%;bottom:35px;transform:translateX(-50%) rotate(-2deg);width:100vw;background:var(--scan);color:var(--ink);overflow:hidden;padding:13px 0;white-space:nowrap;font:600 18px var(--condensed);letter-spacing:.08em}.city-marquee span{display:block;animation:marquee 18s linear infinite}.register{margin-top:50px;margin-bottom:100px;background:var(--paper);color:var(--ink);padding:70px;display:flex;align-items:end;justify-content:space-between;position:relative}.register:before{content:"";position:absolute;inset:12px;border:1px dashed rgba(16,19,15,.25);pointer-events:none}.register p{font:11px var(--condensed);letter-spacing:.16em}.register h2{font-size:50px;margin-bottom:0}.ticket{width:330px;min-height:180px;background:var(--ink);color:var(--paper);padding:28px;text-decoration:none;display:grid;grid-template-columns:1fr auto;position:relative;z-index:1}.ticket span{font-size:26px;font-weight:700}.ticket b{font-size:30px;color:var(--scan)}.ticket small{grid-column:1/-1;align-self:end;color:#89958c}.footer{border-top:1px solid var(--line);padding:50px 0 80px;display:grid;grid-template-columns:1.5fr .5fr;gap:80px;color:#87928a}.footer b{color:var(--paper);font-size:12px}.footer p{font-size:10px;line-height:1.8;max-width:780px}.reveal{animation:rise .9s both}.reveal:nth-child(2){animation-delay:.15s}section{opacity:.72;transition:opacity .7s}section.is-visible{opacity:1}@keyframes scan{to{top:78%}}@keyframes rise{from{opacity:0;transform:translateY(25px)}to{opacity:1;transform:none}}@keyframes marquee{to{transform:translateX(-35%)}}
@media(max-width:980px){.topbar nav{display:none}.section-shell{width:min(100% - 36px,800px)}.hero{grid-template-columns:1fr;padding-top:70px}.scan-chamber{height:540px}.vertical-mark{display:none}.mission,.schedule{grid-template-columns:1fr;gap:45px}.path-grid{grid-template-columns:repeat(2,1fr)}.path-card:last-child{grid-column:1/-1}.chat-workbench,.scanner-workbench,.map-workbench{grid-template-columns:1fr}.artifact-picker{grid-template-columns:repeat(3,1fr)}.city-inspector{min-height:390px}.demo-head{grid-template-columns:80px 1fr}.demo-head p{display:none}.register{padding:50px;display:grid;gap:40px}.ticket{width:100%}}
@media(max-width:620px){.topbar{height:70px;padding:0 18px}.brand-seal{width:34px;height:34px}.mini-cta{font-size:10px}.section-shell{width:calc(100% - 28px)}.hero{padding:54px 0 70px}.archive-no{margin-top:38px}.hero h1{font-size:72px}.hero h1 .scan-type{margin-left:.45em}.hero-lead{font-size:15px}.hero-actions{display:grid}.hero-facts{grid-template-columns:1fr;gap:14px}.hero-facts div{border-right:0;border-bottom:1px solid var(--line);padding:0 0 13px}.scan-chamber{height:430px}.artifact-tree{transform:translateX(-50%) scale(.78);transform-origin:bottom}.target{font-size:8px}.mission,.paths,.demos,.schedule,.cities{padding:80px 0}.section-intro h2,.paths h2,.city-callout h2{font-size:42px}.mission-ledger article{grid-template-columns:54px 1fr 30px}.mission-ledger p{font-size:11px}.path-grid{grid-template-columns:1fr;border-left:1px solid var(--line)}.path-card:last-child{grid-column:auto}.path-card{min-height:230px}.path-icon{margin-bottom:35px}.section-intro.compact{display:block}.demo-card{padding:18px}.demo-head{grid-template-columns:1fr}.demo-head span{margin-bottom:8px}.demo-head h3{font-size:27px}.artifact-picker{grid-template-columns:1fr}.chat-panel{padding:20px}.chat-panel blockquote{font-size:18px}.mode-switch{display:grid;grid-template-columns:1fr}.scanner-workbench{grid-template-columns:1fr}.archive-result{padding:15px}.archive-result dl{grid-template-columns:1fr}.archive-result dl div{grid-column:1!important;border-right:0!important}.china-field{height:380px}.city-inspector h4{font-size:44px}.register{padding:36px 28px}.register h2{font-size:34px}.footer{grid-template-columns:1fr;gap:20px}.topbar .brand small{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}.scan-line{top:50%}}
.section-intro h2,.paths h2,.city-callout h2,.register h2{text-wrap:balance}
.city-callout{margin-bottom:54px}.city-legend{display:flex;flex-wrap:wrap;gap:18px;margin-bottom:20px;font:10px var(--condensed);letter-spacing:.1em;color:#8d9a91}.city-legend span{display:flex;align-items:center;gap:7px}.city-legend i{width:8px;height:8px;border-radius:50%;background:#68766d}.city-legend i.core{background:var(--scan);box-shadow:0 0 10px rgba(231,255,72,.5)}.city-legend i.high{background:var(--jade)}.city-legend i.project{background:var(--clay)}.historical-city-grid{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line);margin-bottom:52px}.history-city-card{min-height:220px;padding:20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);position:relative;overflow:hidden;transition:.3s}.history-city-card:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:#637169;transform:scaleX(.25);transform-origin:left;transition:.3s}.history-city-card.core:after{background:var(--scan)}.history-city-card.high:after{background:var(--jade)}.history-city-card.project:after{background:var(--clay)}.history-city-card:hover{background:rgba(255,255,255,.045);transform:translateY(-4px)}.history-city-card:hover:after{transform:scaleX(1)}.history-city-top{display:flex;justify-content:space-between;align-items:center}.history-city-top span{font:12px var(--condensed);color:#68766d}.history-city-top em{font-style:normal;font-size:9px;color:#8d9a91;border:1px solid var(--line);padding:4px 7px}.history-city-card h3{font-size:42px;margin:38px 0 4px;letter-spacing:-.06em}.history-city-card p{margin:0;color:#b8c1ba;font-size:12px}.history-city-card small{position:absolute;left:20px;bottom:20px;font:9px var(--condensed);letter-spacing:.08em;color:#68766d}
@media(max-width:980px){.historical-city-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:620px){.historical-city-grid{grid-template-columns:repeat(2,1fr)}.history-city-card{min-height:185px;padding:15px}.history-city-card h3{font-size:34px;margin-top:30px}.history-city-card small{left:15px;bottom:15px}.history-city-top em{font-size:8px}}
.brand-logo{display:block;width:124px;height:auto;flex:0 0 auto}.brand>span{white-space:nowrap}.brand>span small{color:#91a097}
@media(max-width:620px){.brand-logo{width:104px}.brand>span{display:none}}