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/* Covers provide the pause; the content opens without extra interface copy. */
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html:has(.home-page),body.home-page{background:var(--paper)}
html:has(.home-page){scroll-padding-top:0}

/* A shared exhibition shelf, with a distinct cover for each medium. */
.works-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;max-width:1240px;margin:34px auto 0;align-items:start}.works-grid .work-frame{width:100%;margin:0}.work-caption{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding-top:20px}.work-caption h3{font-size:18px;font-weight:500;line-height:1.5;letter-spacing:-.03em;margin:0}.work-caption p{font-size:10px;line-height:1.5;color:var(--muted);white-space:nowrap;margin:0}.interactive-work{display:block;min-width:0;text-decoration:none}.mechanism-cover{height:auto;aspect-ratio:320/243;position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;border:1px solid var(--line);background:#ebebe4;color:var(--ink)}.cover-context{display:flex;gap:9px;font-size:13px}.cover-context span{border:1px solid #bfbfb4;min-width:44px;text-align:center;padding:8px 10px}.cover-network{position:relative;width:58%;display:flex;flex-direction:column;gap:8px;padding:0}.cover-network i{display:block;height:13px;background:#d8d9cf;border:1px solid #b9bdb2}.cover-network::before{content:"";position:absolute;inset:-25px 22%;background:repeating-linear-gradient(90deg,transparent 0,transparent calc(33.33% - 1px),#b7bcb0 calc(33.33% - 1px),#b7bcb0 33.33%);z-index:0}.cover-network i{position:relative;z-index:1}.cover-flow{position:absolute;left:calc(50% - 3px);top:-22px;width:6px;height:6px;border-radius:50%;background:#56776a;z-index:2;opacity:0}.cover-distribution{height:76px;display:flex;gap:24px;align-items:stretch}.cover-distribution>div{width:38px;display:flex;flex-direction:column;justify-content:flex-end;gap:8px;align-items:center;font-size:11px}.cover-bar{width:100%;height:var(--bar);background:#839d90;transform-origin:bottom}.cover-distribution>div:first-child .cover-bar{background:#56776a}.interactive-work:hover .work-caption h3{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:6px}@media(hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference){.interactive-work:hover .cover-flow{animation:cover-flow 2.2s var(--ease) infinite}.interactive-work:hover .cover-bar{animation:cover-probability 2.2s var(--ease) infinite}.interactive-work:hover .cover-distribution>div:nth-child(2) .cover-bar{animation-delay:.12s}.interactive-work:hover .cover-distribution>div:nth-child(3) .cover-bar{animation-delay:.24s}}@keyframes cover-flow{0%{transform:translateY(0);opacity:0}20%{opacity:1}70%{transform:translateY(94px);opacity:1}90%,100%{transform:translateY(94px);opacity:0}}@keyframes cover-probability{0%,50%,100%{transform:scaleY(1)}70%{transform:scaleY(.65)}}
.experiment{max-width:1320px;margin:0 auto;padding:42px var(--gutter) 60px}.experiment-heading{display:flex;justify-content:space-between;align-items:baseline;gap:24px;border-bottom:1px solid var(--ink);padding-bottom:28px}.experiment-heading h1{font-size:clamp(27px,3.4vw,46px);line-height:1.4;font-weight:500;letter-spacing:-.055em;margin:0}.experiment-heading p{font-size:12px;color:var(--muted);margin:0;white-space:nowrap}.token-experiment{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:clamp(30px,5vw,74px);padding-top:32px}.token-scene{min-width:0}.token-phases{display:flex;list-style:none;justify-content:space-between;gap:16px;padding:0 0 20px;margin:0;font-size:11px;color:var(--muted)}.token-phases li{position:relative;transition:color .3s}.token-phases [aria-current]{color:var(--ink)}.token-phases [aria-current]::after{content:"";position:absolute;bottom:-9px;left:0;right:0;height:1px;background:var(--ink)}#c{display:block;width:100%;height:410px}.token-output{display:flex;gap:20px;border-top:1px solid var(--line);padding-top:18px;align-items:baseline}.token-output>span{font-size:10px;color:var(--muted);flex:none}.token-output p{font-size:22px;line-height:1.6;font-weight:500;letter-spacing:-.04em;margin:0}.token-console{border-left:1px solid var(--line);padding-left:28px}.token-actions{display:flex;gap:12px}.token-console button{border:1px solid var(--line);border-radius:0;background:transparent;color:var(--ink);padding:11px 15px;font-size:12px;min-height:44px}.token-actions .token-play{background:var(--ink);border-color:var(--ink);color:var(--paper);min-width:76px}.token-console button:hover{border-color:var(--ink)}.token-console button:disabled{opacity:.35;cursor:default}.token-next{width:100%;margin-top:12px}.token-sliders{margin:28px 0}.token-sliders label{display:flex;justify-content:space-between;font-size:11px;margin:22px 0 8px}.token-sliders output{font-variant-numeric:tabular-nums;color:var(--muted)}.token-sliders input{width:100%;accent-color:#56776a;cursor:pointer;height:24px;margin:0}.token-current h2{font-size:18px;font-weight:500;margin:28px 0 12px;letter-spacing:-.03em}.token-current p{font-size:12px;line-height:1.9;color:var(--muted);min-height:68px;margin:0}.token-candidates{list-style:none;padding:0;margin:22px 0 0;font-size:12px}.token-candidates li{position:relative;display:flex;justify-content:space-between;isolation:isolate;padding:8px 10px;margin:5px 0}.token-candidates li::before{content:"";position:absolute;z-index:-1;inset:0 auto 0 0;width:var(--probability);background:#dce3da;transition:width .2s}.token-candidates .is-chosen::before{background:#e8d8c1}.experiment-note{font-size:11px;color:var(--muted);margin-top:32px;border-top:1px solid var(--line);padding-top:18px;line-height:1.9}.experiment-note summary{cursor:pointer;width:fit-content}.experiment-note p{max-width:730px;margin:14px 0 0}.experiment-fallback{font-size:14px;line-height:1.9}
@media(max-width:1000px){.works-grid{gap:28px}.work-caption{display:block}.work-caption p{margin-top:6px}.mechanism-cover{gap:17px}.cover-context{font-size:11px}.cover-context span{min-width:36px;padding:6px 8px}.cover-distribution{height:60px}.cover-distribution>div{width:30px}.cover-network{width:65%}.token-experiment{grid-template-columns:minmax(0,1fr) 235px;gap:26px}.token-console{padding-left:20px}.token-console button{padding-left:10px;padding-right:10px}}
@media(max-width:700px){.works-grid{grid-template-columns:1fr;gap:36px;margin-top:22px}.mechanism-cover{aspect-ratio:16/9;min-height:210px;gap:18px}.cover-network{width:50%;max-width:240px}.cover-context{font-size:12px}.cover-context span{padding:7px 10px}.cover-distribution{height:65px}.work-caption{display:flex;padding-top:14px}.work-caption h3{font-size:17px}.work-caption p{margin:0}.experiment{padding-top:28px}.experiment-heading{display:block;padding-bottom:22px}.experiment-heading h1{font-size:clamp(25px,6.5vw,36px)}.experiment-heading p{margin-top:12px;font-size:11px}.token-experiment{grid-template-columns:1fr;gap:28px;padding-top:26px}.token-phases{font-size:10px;gap:10px;padding-bottom:10px}.token-console{border-left:0;border-top:1px solid var(--line);padding:22px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:0 22px}.token-actions,.token-next{grid-column:1/-1}.token-actions button{flex:1}.token-sliders{margin:0}.token-current h2{margin-top:22px;font-size:17px}.token-current p{min-height:90px}.token-candidates{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:0 14px;margin-top:16px}.token-output p{font-size:21px}.experiment-note{margin-top:28px}}

.experiment-heading h1{transform-origin:0 0}.article-entering .token-experiment{animation:reader-arrive .9s var(--ease) both}
@media(max-width:700px){.token-experiment{grid-template-columns:1fr 1fr;gap:22px}.token-scene{grid-column:1/-1;grid-row:2}.token-console{display:contents}.token-actions{grid-column:1;grid-row:1;gap:8px}.token-actions .token-play{min-width:0}.token-console button{font-size:11px;padding:10px 6px}.token-next{grid-column:2;grid-row:1;margin:0}.token-sliders{grid-column:1;grid-row:3}.token-current{grid-column:2;grid-row:3}.token-candidates{grid-column:1/-1;grid-row:4;margin-top:0}.token-current h2{margin-top:22px}}

/* Three works share a single, quiet exhibition rhythm. */
.works-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;max-width:1360px}.works-grid .mechanism-cover,.ontology-cover{aspect-ratio:16/9;min-height:0}.works-grid .work-caption{display:block}.works-grid .work-caption p{margin-top:6px}.works-grid .mechanism-cover{gap:14px}.works-grid .cover-context{font-size:11px}.works-grid .cover-context span{padding:5px 8px;min-width:32px}.works-grid .cover-network{gap:5px}.works-grid .cover-network i{height:9px}.works-grid .cover-distribution{height:48px;gap:18px}.works-grid .cover-distribution>div{width:28px;font-size:10px;gap:5px}.ontology-cover{display:grid;place-items:center;background:#ebebe4;border:1px solid var(--line);overflow:hidden}.ontology-cover svg{display:block;width:100%;height:100%}.onto-cover-nodes{transition:transform .8s var(--ease);transform-origin:center}@media(hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference){.interactive-work:hover .onto-cover-nodes{transform:scale(1.035)}}
.ontology-stages{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;margin:22px 0 0;border-bottom:1px solid var(--line)}.ontology-stages button{position:relative;border:0;background:none;color:var(--muted);padding:14px 0;font-size:12px;min-height:44px}.ontology-stages [aria-current]{color:var(--ink)}.ontology-stages [aria-current]::after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:1px;background:var(--ink)}.ontology-experiment{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:clamp(28px,4vw,64px);margin-top:30px}.ontology-board{min-width:0}.ontology-board svg{display:block;width:100%;height:410px;overflow:visible;font-family:var(--body)}.onto-label{font-size:13px;fill:#36362f}.onto-secondary{font-size:11px;fill:#797971}.onto-cell rect,.onto-class rect{fill:var(--paper);stroke:#c6c6bc;stroke-width:1;transition:fill .5s,stroke .5s}.onto-person rect{fill:#e1e6dc;stroke:#9caa94}.onto-goods rect{fill:#dce4df;stroke:#96aba0}.onto-place rect{fill:#eee3d5;stroke:#bfa78c}.onto-cell{transition:transform .85s cubic-bezier(.65,0,.35,1),opacity .5s}.onto-class,.onto-fade{transition:opacity .65s}.onto-class{opacity:0}.onto-hull{fill:none;stroke:#a7b19e;stroke-width:1;stroke-dasharray:4 6}.onto-place .onto-hull{stroke:#bca78c}.onto-goods .onto-hull{stroke:#96aba0}.onto-edge{fill:none;stroke-width:1.5;stroke-dasharray:1;stroke-dashoffset:1;opacity:0;transition:stroke-dashoffset .8s var(--ease),opacity .4s}.onto-edge.is-shown{stroke-dashoffset:0;opacity:1}.ontology-legend{display:flex;justify-content:center;gap:24px;margin:10px 0 0;font-size:10px;color:var(--muted);transition:opacity .4s}.ontology-legend span{display:flex;align-items:center;gap:7px}.ontology-legend span::before{content:"";width:16px;height:1px;background:var(--relation)}.ontology-console{border-left:1px solid var(--line);padding-left:28px}.ontology-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px}.ontology-actions button{border:1px solid var(--line);background:none;font-size:12px;color:var(--ink);padding:10px 8px;min-height:44px}.ontology-actions button:first-child{color:var(--paper);background:var(--ink);border-color:var(--ink)}.ontology-actions button:last-child{grid-column:1/-1}.ontology-actions button:disabled{opacity:.35;cursor:default}.ontology-actions button:hover{border-color:var(--ink)}.ontology-status h2{font-size:22px;font-weight:500;letter-spacing:-.03em;line-height:1.4;margin:34px 0 15px}.ontology-status p{font-size:13px;line-height:1.9;color:var(--muted);margin:0;min-height:98px}.ontology-status ul{list-style:none;margin:25px 0 0;padding:18px 0 0;border-top:1px solid var(--line);font-size:12px;line-height:2.1;color:#58584e}.article-entering .ontology-stages,.article-entering .ontology-experiment{animation:reader-arrive .9s var(--ease) both}
@media(max-width:1000px) and (min-width:701px){.works-grid{gap:24px;grid-template-columns:repeat(2,minmax(0,1fr))}.works-grid .work-frame{grid-column:1/-1;width:min(100%,800px);margin:auto}.works-grid .work-frame .work-caption{display:flex}.works-grid .work-frame .work-caption p{margin:0}.ontology-experiment{grid-template-columns:minmax(0,1fr) 210px;gap:24px}.ontology-console{padding-left:20px}.ontology-actions{gap:8px}.ontology-actions button{font-size:11px}}
@media(max-width:700px){.works-grid{grid-template-columns:1fr;gap:32px}.works-grid .work-caption{display:flex}.works-grid .work-caption p{margin:0}.works-grid .mechanism-cover{min-height:185px}.ontology-stages{gap:7px;margin-top:16px}.ontology-stages button{font-size:10px;padding:13px 0}.ontology-experiment{grid-template-columns:1fr;margin-top:22px;gap:26px}.ontology-console{display:contents}.ontology-actions{grid-row:1;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.ontology-actions button{font-size:11px;padding:10px 5px}.ontology-actions button:last-child{grid-column:auto}.ontology-board{grid-row:2}.ontology-status{grid-row:3;border-top:1px solid var(--line);padding-top:20px}.ontology-status h2{font-size:21px;margin-top:0}.ontology-status p{min-height:0}.ontology-status ul{margin-top:18px;padding-top:12px}.ontology-legend{gap:18px;font-size:10px}.ontology-board .onto-label{font-size:12px}.ontology-board .onto-secondary{font-size:10px}}

/* Four experiments form two balanced rows. */
.works-grid{grid-template-columns:repeat(2,minmax(0,1fr));max-width:1200px;gap:44px 36px}.works-grid .work-frame{grid-column:auto;width:100%;margin:0}.works-grid .work-frame .work-caption{display:block}.works-grid .work-frame .work-caption p{margin-top:6px}.knowledge-cover svg{transition:transform .8s var(--ease)}
.knowledge-metrics{margin-top:28px;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.knowledge-metrics>div{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.knowledge-metrics strong{font-size:15px;font-weight:500;color:var(--ink);font-variant-numeric:tabular-nums}.knowledge-experiment .ontology-status h2{margin-top:25px}.knowledge-experiment .ontology-status p{min-height:110px}.kg-plane{transition:opacity .6s var(--ease)}.kg-surface{fill:#eeeee7;stroke:#d9d9cf;stroke-width:1}.kg-label{font-size:13px;fill:#34362e}.kg-small{font-size:10px;fill:#797971}.kg-plane-label{font-size:12px;fill:#6b6e61}.kg-node rect{stroke:#c3c3b7;fill:var(--paper);stroke-width:1;transition:fill .5s,stroke .5s}.kg-person rect{fill:#e1e6dc;stroke:#9caa94}.kg-goods rect{fill:#dce4df;stroke:#96aba0}.kg-place rect{fill:#eee3d5;stroke:#bfa78c}.kg-mappings{opacity:0;transition:opacity .6s}.kg-map{stroke-dasharray:3 5}.kg-edge{transition:stroke-width .5s}.kg-edge.is-premise{stroke-width:3}.kg-extra{opacity:0;stroke-dasharray:5 4;transition:opacity .6s,stroke-dashoffset .9s var(--ease);stroke-dashoffset:1}.kg-extra.is-shown{opacity:1;stroke-dashoffset:0}.kg-violation rect{stroke:#b74b3e;stroke-width:2}.kg-validation-result li:first-child{color:#a44338}.kg-inference-result li:last-child{color:#9b6729;font-weight:500}.knowledge-experiment .ontology-status ul{line-height:2.1}.article-entering .knowledge-experiment{animation:reader-arrive .9s var(--ease) both}@media(hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference){.interactive-work:hover .knowledge-cover svg{transform:scale(1.035)}}
@media(max-width:700px){.works-grid{grid-template-columns:1fr;gap:32px}.works-grid .work-frame .work-caption{display:flex}.works-grid .work-frame .work-caption p{margin:0}.knowledge-experiment .ontology-status p{min-height:0}.knowledge-metrics{grid-row:3;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:20px;border-top:0}.knowledge-metrics>div{display:block;padding-top:4px}.knowledge-metrics strong{display:block;margin-top:8px;font-size:18px}.knowledge-experiment .ontology-status{grid-row:4}.knowledge-experiment .ontology-status h2{margin-top:0}.knowledge-experiment .kg-label{font-size:12px}.knowledge-experiment .kg-plane-label{font-size:11px}.knowledge-experiment .kg-small{font-size:10px}}
.kg-extra{stroke-dasharray:.025 .018}.kg-inferred{stroke-width:2}

/* Knowledge demonstrations are a subsection of Experiments. */
.video-experiment{width:min(100%,960px,calc((100svh - 250px)*16/9));margin:34px auto 0}.video-experiment .work-caption{display:flex}.knowledge-section{margin-top:76px;scroll-margin-top:32px}.knowledge-section-heading{padding-bottom:18px;border-bottom:1px solid var(--line)}.knowledge-section-heading h3{margin:0;font-size:20px;line-height:1.4;font-weight:500;letter-spacing:-.03em}.knowledge-grid{grid-template-columns:repeat(3,minmax(0,1fr));max-width:1360px;margin-top:28px;gap:30px}.knowledge-grid .work-caption h4{font-size:18px;font-weight:500;line-height:1.5;letter-spacing:-.03em;margin:0}.interactive-work:hover .work-caption h4{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:6px}
@media(max-width:900px) and (min-width:701px){.knowledge-grid{gap:20px}.knowledge-grid .work-caption h4{font-size:16px}}
@media(max-width:700px){.video-experiment{width:100%;margin-top:22px}.knowledge-section{margin-top:52px}.knowledge-section-heading h3{font-size:19px}.knowledge-grid{grid-template-columns:1fr;gap:32px;margin-top:22px}.knowledge-grid .work-caption h4{font-size:17px}}

/* The film archive runs backwards in time; attribution stays with each clip. */
.film-timeline{position:relative;max-width:1180px;margin:36px auto 0}.film-timeline::before{content:"";position:absolute;left:99px;top:6px;bottom:0;width:1px;background:var(--line)}.film-year-group{display:grid;grid-template-columns:100px minmax(0,1fr);gap:30px;margin:0 0 66px}.film-year-group:last-child{margin-bottom:0}.film-year{font:800 34px/1 var(--display);letter-spacing:-.05em;margin:0;position:sticky;top:30px;align-self:start}.film-year-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.film-year-grid.is-single{grid-template-columns:1fr;max-width:900px}.timeline-film{width:100%;margin:0;min-width:0}.timeline-film .work-cover{width:100%}.film-caption{padding-top:18px}.film-caption h4{font-size:19px;font-weight:500;line-height:1.5;letter-spacing:-.03em;margin:0}.film-caption p{font-size:11px;line-height:1.8;color:var(--muted);margin-top:7px}.film-source{display:inline-block;font-size:10px;color:var(--muted);text-decoration:underline;text-underline-offset:3px;margin-top:7px}.film-source:hover{color:var(--ink)}.cinema-stage{aspect-ratio:var(--film-aspect,1.7777778);width:min(calc(100% - 100px),1440px,calc((100dvh - 130px)*var(--film-ratio,1.7777778)))}
@media(max-width:700px){.film-timeline{margin-top:26px}.film-timeline::before{display:none}.film-year-group{grid-template-columns:1fr;gap:20px;margin-bottom:42px}.film-year{position:static;font-size:29px}.film-year-grid{grid-template-columns:1fr;gap:30px}.film-caption{padding-top:13px}.film-caption h4{font-size:18px}.film-caption p{font-size:10px}.cinema-stage{width:100%}}
.knowledge-grid .mechanism-cover{width:100%;min-width:0;min-height:0}

/* Timeline by method: each year states how its clips were made; a bridge marks the change of approach. */
.film-year-body{min-width:0}
.film-method{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px;margin:4px 0 24px;max-width:760px}
.film-method strong{font-size:14px;font-weight:500;letter-spacing:-.01em}
.film-method span{font-size:12px;line-height:1.75;color:var(--muted)}
.film-shift{position:relative;margin:-24px 0 58px 130px;max-width:640px;padding:18px 0 18px 22px;border-left:2px solid var(--ink);font-size:16px;line-height:1.8;letter-spacing:-.01em}
.film-year-grid.is-stacked{grid-template-columns:1fr;gap:56px;max-width:900px}
.film-year-grid.is-stacked>.timeline-film{max-width:720px}
.film-prompt{font-size:12px!important;color:var(--ink)!important;margin-top:10px!important}
.film-note{font-size:12px;line-height:1.75;color:var(--muted);margin:8px 0 0;max-width:680px}
.film-compare{margin:0;min-width:0}
.film-compare-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 14px;margin-bottom:14px}
.film-compare-label{font-size:11px;color:var(--muted);letter-spacing:.02em}
.film-compare-prompt{font-size:19px;font-weight:500;line-height:1.5;letter-spacing:-.03em;margin:0}
.film-compare-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.film-compare-model{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin:10px 0 0;font-size:12px}
.film-compare-model strong{font-weight:500}
.film-compare-model span{font-size:11px;color:var(--muted)}
.film-compare>.film-note{margin-top:14px}
@media(max-width:700px){.film-method{margin:0 0 18px}
.film-shift{margin:-10px 0 40px;font-size:15px;padding:12px 0 12px 16px}
.film-year-grid.is-stacked{gap:40px}
.film-compare-prompt{font-size:17px}
.film-compare-pair{gap:8px}
.film-compare-model{font-size:11px;flex-direction:column;gap:2px}
}

/* Knowledge demos as a numbered index: each row says what question it answers and the steps it walks through. */
.knowledge-section{max-width:1180px;margin-left:auto;margin-right:auto}
.knowledge-section-heading{display:grid;grid-template-columns:100px minmax(0,1fr);gap:30px;align-items:baseline;padding-bottom:22px}
.knowledge-section-heading p{font-size:12px;line-height:1.75;color:var(--muted);margin:0;max-width:640px}
.demo-index{list-style:none;margin:0;padding:0}
.demo-row{border-bottom:1px solid var(--line)}
.demo-link{display:grid;grid-template-columns:100px minmax(0,1fr) minmax(0,440px);gap:30px;align-items:start;padding:34px 0;color:var(--ink);text-decoration:none}
.demo-num{align-self:start;font:800 34px/1 var(--display);letter-spacing:-.05em;color:#b9b9b0;transition:color .4s var(--ease)}
.demo-copy{min-width:0;max-width:520px;padding-top:2px}
.demo-copy h4{font-size:22px;font-weight:500;line-height:1.4;letter-spacing:-.03em;margin:0}
.demo-question{font-size:15px;line-height:1.7;margin:8px 0 0;color:#45453f}
.demo-stages{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:22px 0 0;padding:0}
.demo-stages li{font-size:11px;line-height:1;padding:7px 9px;border:1px solid var(--line);color:var(--muted);transition:background .35s var(--ease),color .35s var(--ease),border-color .35s var(--ease)}
.demo-meta{font-size:11px;color:var(--muted);margin:14px 0 0}
.demo-link .mechanism-cover,.demo-link .ontology-cover{width:100%;aspect-ratio:16/9;min-height:0}
.demo-link .mechanism-cover{gap:14px}
.demo-link .cover-context{font-size:11px}
.demo-link .cover-context span{padding:5px 8px;min-width:32px}
.demo-link .cover-network{gap:5px}
.demo-link .cover-network i{height:9px}
.demo-link .cover-distribution{height:52px;gap:18px}
.demo-link .cover-distribution>div{width:28px;font-size:10px;gap:5px}
.demo-link:focus-visible{outline:2px solid var(--ink);outline-offset:6px}
.demo-link:hover .demo-num,.demo-link:focus-visible .demo-num{color:var(--ink)}
.demo-link:hover h4{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:6px}
.demo-link:hover .demo-stages li,.demo-link:focus-visible .demo-stages li{background:var(--ink);border-color:var(--ink);color:var(--paper);transition-delay:calc(var(--i)*110ms)}
@media(prefers-reduced-motion:reduce){.demo-stages li{transition:none}.demo-link:hover .demo-stages li{transition-delay:0s}}
@media(max-width:900px){.demo-link{grid-template-columns:56px minmax(0,1fr) minmax(0,300px);gap:20px}
.knowledge-section-heading{grid-template-columns:1fr;gap:8px}
.demo-num{font-size:26px}
.demo-copy h4{font-size:19px}}
@media(max-width:700px){.knowledge-section-heading{grid-template-columns:1fr;gap:8px}
.demo-link{grid-template-columns:1fr;gap:14px;padding:26px 0}
.demo-num{display:none}
.demo-link .mechanism-cover,.demo-link .ontology-cover{order:-1}
.demo-copy h4{font-size:18px}
.demo-question{font-size:14px}
.demo-stages{margin-top:16px}
.demo-stages li{font-size:10px;padding:6px 7px}}

/* Forward-running film chapters: numbered like the demo index, closing on a line that leads into the demos. */
.film-year{color:#b9b9b0}
.film-when{font:800 13px/1 var(--display);letter-spacing:-.02em;color:var(--ink);margin-right:2px}
.film-landing{margin:58px 0 0 130px;max-width:640px;padding:18px 0 0;border-top:1px solid var(--line);font-size:15px;line-height:1.8;color:#45453f}
.film-landing a{display:inline-block;margin-left:10px;color:var(--ink);text-underline-offset:4px}
@media(max-width:700px){.film-landing{margin:40px 0 0;font-size:14px}}

/* ── AI 编年史 ─────────────────────────────────────────── */
.chronicle-page{--sage:#5d7466}
.chron-intro{margin:0 var(--gutter);padding:58px 0 64px;display:grid;grid-template-columns:24% 1fr;column-gap:6%;border-bottom:1px solid var(--ink)}.chron-intro h1{font-size:clamp(30px,3.7vw,58px);font-weight:500;line-height:1.3;letter-spacing:-.06em;margin:0 0 26px;max-width:900px;text-wrap:balance}.chron-intro p{font-size:15px;line-height:2;color:#35352f;max-width:640px;margin:0 0 8px}.chron-intro .chron-note{font-size:12px;color:var(--muted)}.chronicle-page .live-dot{background:var(--sage)}
.chron-overview{padding:46px var(--gutter) 34px;border-bottom:1px solid var(--line)}
.chron-map{--label:clamp(150px,17vw,240px);--sage:#5d7466}.map-axis{display:grid;grid-template-columns:var(--label) 1fr;height:34px}.map-scale{position:relative;border-bottom:1px solid var(--ink)}.map-year{position:absolute;left:var(--x);bottom:9px;padding-left:7px;font:500 12px/1 var(--body);letter-spacing:.02em}.map-now{position:absolute;left:var(--x);bottom:9px;transform:translateX(-50%);font-size:10px;color:var(--sage);white-space:nowrap}
.map-rows{list-style:none;margin:0;padding:0}.map-row{display:grid;grid-template-columns:var(--label) 1fr;min-height:88px;border-bottom:1px solid var(--line)}.map-label{display:flex;gap:14px;align-items:center;padding-right:18px;text-decoration:none;font-size:14px;letter-spacing:-.02em}.map-no{font:800 12px/1 var(--display);color:var(--muted)}.map-label:hover .map-name{text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
.map-track{position:relative;background:linear-gradient(to right,var(--line) 1px,transparent 1px) 0 0/25% 100%}.map-track::after{content:"";position:absolute;left:var(--now);top:0;bottom:0;border-left:1px dashed var(--sage);opacity:.7}.map-span{position:absolute;top:50%;left:var(--from);width:calc(var(--to) - var(--from));height:1px;background:var(--ink);transition:background .3s}.map-row:hover .map-span{background:var(--sage)}
.map-node{position:absolute;left:calc(var(--x) + var(--dx,0px));top:50%;width:0;height:0;text-decoration:none;z-index:1}.map-node:focus-visible{outline:none}.node-dot{position:absolute;left:-5px;top:-5px;width:10px;height:10px;background:var(--paper);border:1.5px solid var(--ink);transition:transform .3s var(--ease),background .3s}.map-node.is-contemporary .node-dot{background:var(--ink)}.map-node:hover .node-dot,.map-node:focus-visible .node-dot{transform:scale(1.45);background:var(--ink)}.map-node:focus-visible .node-dot{outline:2px solid var(--ink);outline-offset:3px}
.node-mark{position:absolute;left:0;top:11px;transform:translateX(-50%);font:800 10px/1 var(--display);letter-spacing:.01em;white-space:nowrap}.map-node[data-side=above] .node-mark{top:auto;bottom:11px}
.node-card{position:absolute;bottom:22px;left:-18px;width:310px;display:flex;flex-direction:column;gap:9px;padding:17px 19px 18px;background:var(--paper);border:1px solid var(--ink);box-shadow:0 18px 40px -26px rgba(0,0,0,.45);opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .25s,transform .35s var(--ease),visibility .25s;pointer-events:none}.map-node[data-anchor=end] .node-card{left:auto;right:-18px}.map-node:hover,.map-node:focus-visible{z-index:8}.map-node:hover .node-card,.map-node:focus-visible .node-card{opacity:1;visibility:visible;transform:none}
.card-meta{font-size:10px;color:var(--muted);letter-spacing:.08em}.card-title{font-size:15px;line-height:1.5;font-weight:500;letter-spacing:-.025em;color:var(--ink)}.card-line{font-size:12px;line-height:1.75;color:#35352f}.card-line b{font-weight:500;font-size:10px;letter-spacing:.1em;color:var(--muted);margin-right:9px}.card-line+.card-line{border-top:1px solid var(--line);padding-top:9px;color:var(--ink)}
.map-legend{display:flex;justify-content:flex-end;gap:26px;margin:16px 0 0;font-size:11px;color:var(--muted)}.legend-dot{display:inline-block;width:9px;height:9px;border:1.5px solid var(--ink);margin-right:9px;vertical-align:-1px}.legend-dot.is-contemporary{background:var(--ink)}
.chron-map.is-compact{margin-top:8px}.chron-map.is-compact .map-row{min-height:70px}.chron-map.is-compact .map-label{font-size:13px}.chron-teaser{padding-top:30px}.teaser-dek{font-size:13px;line-height:1.9;color:var(--muted);max-width:560px;margin:22px 0 22px}
.chron-body{padding:0 var(--gutter) 100px}.chron-controls{display:flex;gap:27px;padding:20px 0 19px;border-bottom:1px solid var(--ink)}
.chron-thread,.chron-year{display:grid;grid-template-columns:24% 1fr;column-gap:6%;padding:66px 0 44px;border-bottom:1px solid var(--line)}.thread-head{align-self:start;position:sticky;top:28px}.thread-no{display:block;font:800 clamp(58px,7.2vw,112px)/.9 var(--display);letter-spacing:-.045em;margin-bottom:24px}.thread-head h2{font-size:clamp(22px,2.2vw,32px);font-weight:500;line-height:1.35;letter-spacing:-.045em;margin:0 0 14px}.thread-arc{font-size:14px;line-height:1.9;color:#35352f;margin:0 0 18px}.thread-span{font-size:10px;letter-spacing:.08em;color:var(--muted);margin:0}
.thread-list{list-style:none;margin:0;padding:0;position:relative}.thread-list::before{content:"";position:absolute;left:5px;top:40px;bottom:40px;width:1px;background:var(--ink)}
.thread-entry>a{display:grid;grid-template-columns:118px 1fr 40px;gap:26px;position:relative;padding:30px 0 32px 36px;border-bottom:1px solid var(--line);text-decoration:none}.thread-entry:last-child>a{border-bottom:0}.thread-entry>a::before{content:"";position:absolute;left:0;top:38px;width:11px;height:11px;background:var(--ink);border:1.5px solid var(--ink);box-sizing:border-box}.thread-entry>a:has(.is-contemporary)::before{background:var(--ink)}
.entry-date{font-size:13px;line-height:1.6;letter-spacing:.02em;padding-top:6px;font-variant-numeric:tabular-nums}.entry-thread{display:block;font-size:10px;letter-spacing:.08em;color:var(--muted);margin-bottom:9px}.entry-body h3{font-size:clamp(19px,1.8vw,26px);font-weight:500;line-height:1.45;letter-spacing:-.04em;margin:0 0 18px;max-width:760px;transition:transform .5s var(--ease)}.thread-entry a:hover h3{transform:translateX(6px)}.entry-kind{font-size:10px;color:var(--muted);text-align:right;padding-top:8px}.entry-kind.is-contemporary{color:var(--ink)}
.entry-shift{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:0;max-width:820px}.entry-shift>div{border-top:1px solid var(--line);padding-top:12px}.entry-shift>div+div{border-top-color:var(--ink)}.entry-shift dt{font-size:10px;letter-spacing:.14em;color:var(--muted);margin-bottom:8px}.entry-shift dd{margin:0;font-size:13px;line-height:1.85;color:#55554e}.entry-shift>div+div dd{color:var(--ink)}
.chron-aside{align-self:start;position:sticky;top:115px;max-width:250px}.aside-series{font-size:10px;letter-spacing:.12em;color:var(--muted);text-decoration:none}.aside-series:hover{color:var(--ink)}.aside-thread{font-size:19px;font-weight:500;letter-spacing:-.035em;line-height:1.4;margin:12px 0 6px}.aside-event{font-size:11px;color:var(--muted);margin:0 0 28px}.chron-aside .entry-shift{grid-template-columns:1fr;gap:20px}.chron-aside .entry-shift dd{font-size:12px}
.byline-series{color:var(--ink);text-underline-offset:4px;text-decoration-thickness:1px}
.chron-banner{display:grid;grid-template-columns:14% 1fr 88px;gap:22px;align-items:center;padding:28px 0;border-bottom:1px solid var(--ink);text-decoration:none}.chron-banner .eyebrow{color:var(--ink)}.banner-copy{font-size:clamp(17px,1.7vw,23px);letter-spacing:-.035em;line-height:1.5}.banner-go{font-size:22px;text-align:right;transition:transform .4s var(--ease)}.chron-banner:hover .banner-go{transform:translateX(6px)}
@media(max-width:900px){.chron-intro,.chron-thread,.chron-year{grid-template-columns:19% 1fr;column-gap:5%}.chron-map{--label:150px}.thread-entry>a{grid-template-columns:96px 1fr;}.entry-kind{display:none}}
@media(max-width:700px){.chron-intro,.chron-thread,.chron-year{grid-template-columns:1fr}.chron-intro{padding:34px 0 40px}.chron-intro h1{font-size:30px;margin-bottom:18px}.chron-intro p{font-size:14px}.thread-head{position:static;margin-bottom:24px}.thread-no{font-size:58px;margin-bottom:16px}.chron-thread,.chron-year{padding:44px 0 26px}
.chron-overview{padding:30px var(--gutter) 24px}.map-axis{grid-template-columns:1fr}.map-axis-gap{display:none}.map-year{font-size:10px;padding-left:5px}.map-row{grid-template-columns:1fr;min-height:0;padding:14px 0 6px}.chron-map.is-compact .map-row{min-height:0}.map-label{padding:0 0 4px;font-size:13px;gap:10px}.map-track{height:34px}.node-mark,.node-card{display:none}.map-legend{justify-content:flex-start;gap:18px;font-size:10px}
.thread-list::before{top:30px;bottom:30px}.thread-entry>a{grid-template-columns:1fr;gap:6px;padding:22px 0 24px 28px}.thread-entry>a::before{top:27px}.entry-date{padding:0;font-size:12px}.entry-body h3{font-size:20px;margin-bottom:14px}.entry-shift{grid-template-columns:1fr;gap:14px}.entry-shift dd{font-size:13px}
.chron-banner{grid-template-columns:1fr 30px;gap:8px 12px;padding:22px 0}.chron-banner .eyebrow{grid-column:1/-1}.banner-copy{font-size:17px}
.chron-aside{position:static;max-width:none;margin-bottom:36px;padding-bottom:22px;border-bottom:1px solid var(--line)}.aside-event{margin-bottom:18px}}
/* AI 进行时：持续更新的标记 */
.map-tail{position:absolute;top:50%;left:var(--from);width:calc(var(--to) - var(--from));border-top:1px dashed var(--ink);opacity:.55}
.legend-tail{display:inline-block;width:22px;border-top:1px dashed var(--ink);margin-right:9px;vertical-align:3px}
.intro-meta .eyebrow{color:var(--ink);margin-bottom:14px}.intro-status{display:flex;align-items:center;gap:9px;font-size:12px;margin:0 0 8px}.intro-updated{font-size:10px;letter-spacing:.06em;color:var(--muted);margin:0}
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--sage,#5d7466);box-shadow:0 0 0 0 rgba(93,116,102,.5);animation:live 2.4s ease-out infinite}@keyframes live{0%{box-shadow:0 0 0 0 rgba(93,116,102,.45)}70%,100%{box-shadow:0 0 0 9px rgba(93,116,102,0)}}@media(prefers-reduced-motion:reduce){.live-dot{animation:none}}
.latest{margin-top:54px}.latest>.eyebrow{padding-bottom:14px;border-bottom:1px solid var(--ink)}.latest-all{margin-top:22px}
@media(max-width:700px){.intro-meta{margin-bottom:26px}.latest{margin-top:36px}}

.entry-take{margin:0;max-width:760px;border-top:1px solid var(--ink);padding-top:12px;font-size:14px;line-height:1.85;color:var(--ink)}.entry-take span{display:block;font-size:10px;letter-spacing:.14em;color:var(--muted);margin-bottom:8px}.chron-aside .entry-take{font-size:13px}

/* ── 板块过渡（随滚动推进，往回滚会倒放）─────────────────────
   只在 JS 确认可用且未开启「减少动态效果」时启用（.scrub-on）。 */

/* 1. 首屏：往下滚时，水墨纸面缓缓后退变暗，实验区像一张纸盖上来 */
.scrub-on .hero__paper,.scrub-on .hero__reveal{transform:translate3d(0,calc(var(--p,0) * 32vh),0);opacity:calc(1 - var(--p,0) * .4);will-change:transform,opacity}
.scrub-on .chrome{opacity:calc(1 - var(--p,0) * 1.8)}
.scrub-on .work-section{position:relative;z-index:2;box-shadow:0 -24px 48px rgba(0,0,0,.16)}

/* 2. 板块交接：上一块缩小、下沉、变淡，下一块从下方升起 */
.scrub-on .scene{position:relative;will-change:transform,opacity}
.scrub-on .knowledge-section,.scrub-on #recent{z-index:1;background:var(--paper)}

/* 3. 板块标题：文字从横线下方升起，横线从左向右画出，进度跟随滚动 */
.scrub-on .heading-reveal{position:relative;border-bottom-color:transparent!important;--h:0}
.scrub-on .heading-reveal::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:var(--rule,var(--ink));transform:scaleX(var(--h));transform-origin:left center}
.scrub-on .heading-reveal>*{transform:translateY(calc((1 - var(--h)) * 100%));clip-path:inset(-.3em -2em calc((1 - var(--h)) * 100% - .4em) -2em)}
.scrub-on .knowledge-section-heading.heading-reveal{--rule:var(--line)}

/* 4. 影像时间线：竖线随滚动被墨色描深，走到哪一年，年份就亮起来 */
.film-timeline::after{content:"";position:absolute;left:99px;top:6px;bottom:0;width:1px;background:var(--ink);transform-origin:top;transform:scaleY(var(--tp,0));pointer-events:none}
.film-year{transition:color .6s var(--ease)}
.film-year-group.is-reached>.film-year{color:var(--ink)}
@media(max-width:700px){.film-timeline::after{display:none}}

/* 5. AI 进行时：线随滚动从左往右画，走到节点时节点弹出 */
.scrub-on .chron-map .map-span{transform-origin:left center;transform:scaleX(var(--r,1))}
.scrub-on .chron-map .map-tail{opacity:var(--tail,1);transition:opacity .4s}
.scrub-on .chron-map .map-node{opacity:0;transition:opacity .35s var(--ease)}
.scrub-on .chron-map .node-dot{scale:.2;transition:scale .5s cubic-bezier(.34,1.56,.64,1),transform .3s var(--ease),background .3s}
.scrub-on .chron-map .map-node.is-on{opacity:1}
.scrub-on .chron-map .map-node.is-on .node-dot{scale:1}

@media(prefers-reduced-motion:reduce){.film-timeline::after{display:none}}