@charset "UTF-8";
:root{--ink:#14283f;--muted:#73818b;--teal:#278ea5;--mint:#4d9b88;--lime:#a2b86b;--paper:#f8f9f6;--line:#dce4e2;--surface:#edf1f1;--serif:Georgia,'Noto Serif SC','SimSun',serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.8 'Segoe UI','Microsoft YaHei',sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:5px}img,svg{max-width:100%}img{display:block}p,h1,h2,h3,h4{margin-top:0}p{color:#5d6e7b}h1,h2,h3{font-weight:600;letter-spacing:-.035em;line-height:1.5}h1{font-size:clamp(34px,4vw,58px);line-height:1.35}h2{font-size:30px}h3{font-size:20px}small{font-size:12px}.wrap{max-width:1440px;margin:auto;padding:0 60px}.eyebrow,.mono{font-family:'Segoe UI',sans-serif;font-size:11px;font-weight:600;letter-spacing:.17em;text-transform:uppercase}.eyebrow{display:flex;align-items:center;gap:10px;color:var(--teal);margin-bottom:24px}.eyebrow:before{content:'';width:22px;height:1px;background:currentColor}.tag{display:inline-block;border:1px solid var(--line);padding:3px 10px;font-size:11px;letter-spacing:.03em;color:#637983;border-radius:2px}.tag.demo{background:#eef2e5;color:#6c7f43;border-color:#dce5c9}.text-link{display:inline-flex;align-items:center;gap:24px;color:var(--ink);font-size:13px;font-weight:600}.text-link span{color:var(--teal);font-size:20px;transition:transform .2s}.text-link:hover span{transform:translateX(5px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:28px;padding:13px 21px;background:var(--ink);color:white;border:1px solid var(--ink);border-radius:3px;font-size:13px;transition:background .2s}.btn:hover{background:#24455f}.btn.secondary{background:transparent;color:var(--ink);border-color:#cbd7d5}.section{padding:78px 0;border-top:1px solid var(--line)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:35px;margin-bottom:34px}.section-heading h2{margin:0}.section-heading p{max-width:420px;font-size:13px;margin:0}.section-heading .eyebrow{margin-bottom:12px}.number{font-family:var(--serif);font-style:italic;color:#a9b8b9;font-size:15px}.pill-row{display:flex;gap:8px;flex-wrap:wrap}.skip{position:absolute;top:-80px;left:20px;background:white;padding:10px;z-index:999}.skip:focus{top:10px}.masthead{border-bottom:1px solid var(--line);font-size:10px;letter-spacing:.14em;color:#85918e;padding:8px 0}.masthead .wrap{display:flex;justify-content:space-between}.site-header{position:sticky;top:0;z-index:100;background:rgba(248,249,246,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{height:83px;display:flex;align-items:center;justify-content:space-between;gap:25px}.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}.brand-mark{width:42px;height:42px}.brand strong{font-size:21px;letter-spacing:-.035em;line-height:1.2;display:block}.brand small{display:block;letter-spacing:.15em;color:#83908e;font-size:8px;margin-top:5px}.nav{display:flex;gap:25px;align-items:center}.nav a{font-size:12px;color:#63717a;white-space:nowrap;position:relative;padding:28px 0}.nav a.active,.nav a:hover{color:var(--ink)}.nav a.active:after{content:'';position:absolute;bottom:18px;left:0;right:0;height:2px;background:var(--teal)}.header-action{font-size:11px;padding:8px 13px;border:1px solid var(--line);border-radius:2px}.mobile-toggle{display:none;border:1px solid var(--line);background:transparent;padding:7px 12px}.hero{display:grid;grid-template-columns:.87fr 1.25fr;gap:30px;min-height:585px;padding-top:56px;padding-bottom:35px;align-items:center}.hero-copy{padding-bottom:24px}.hero-copy .eyebrow{margin-bottom:23px}.hero-copy h1{font-size:clamp(34px,3.65vw,52px);margin-bottom:23px;letter-spacing:-.055em}.hero-copy h1 .subline{color:var(--teal);font-weight:400}.hero-copy>p{max-width:430px;font-size:14px;line-height:2.05;margin-bottom:28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero-note{display:flex;gap:18px;align-items:center;margin-top:29px;font-size:10px;color:#83918d}.hero-note .dot{width:5px;height:5px;background:var(--lime);border-radius:50%}.hero-index{border-top:1px solid var(--line);display:grid;grid-template-columns:1.2fr repeat(3,1fr);padding:20px 0;gap:28px}.hero-index>div{font-size:11px;color:var(--muted)}.hero-index strong{display:block;font-family:var(--serif);font-size:22px;line-height:1.4;color:var(--ink);font-weight:400}.hero-index .label{font-size:10px;letter-spacing:.13em;color:#8e9b98}.hero-index p{margin:0;font-size:12px}.graph-shell{position:relative;align-self:stretch;display:flex;flex-direction:column;justify-content:center;min-width:0;background:radial-gradient(ellipse at 48% 45%,#e8f0e9 0,transparent 65%)}.graph-toolbar{display:flex;justify-content:space-between;align-items:center;padding:0 4px;font-size:10px;color:#83928e}.graph-toolbar .live-dot{display:inline-block;width:5px;height:5px;background:var(--mint);border-radius:50%;margin-right:8px}.reset-btn{background:transparent;border:0;font-size:11px;color:#71878c;padding:5px}.graph-controls{display:flex;gap:7px;align-items:center;flex-wrap:wrap;margin:9px 0 6px}.filter-btn{border:1px solid transparent;background:transparent;padding:4px 8px;font-size:10px;color:#7c8c8c;border-radius:3px}.filter-btn.active{border-color:#cad9d3;background:#fff;color:var(--ink)}.filter-btn i{display:inline-block;height:5px;width:5px;border-radius:50%;background:var(--node);margin-right:5px}.graph-svg{width:100%;height:auto;overflow:visible}.graph-edge{stroke:#a9bdb7;stroke-width:1;fill:none;transition:opacity .2s,stroke .2s}.graph-edge-hit{stroke:transparent;stroke-width:14;cursor:pointer}.graph-edge.selected{stroke:var(--teal);stroke-width:2}.graph-node{cursor:pointer;transition:opacity .2s}.graph-node .node-halo{fill:var(--node);opacity:.07}.graph-node .node-core{fill:var(--paper);stroke:var(--node);stroke-width:1.25}.graph-node .node-dot{fill:var(--node)}.graph-node text{fill:#637b7b;font-size:9px;font-family:'Microsoft YaHei',sans-serif}.graph-node.major text{fill:var(--ink);font-size:11px}.graph-node.major .node-core{fill:var(--node)}.graph-node.major .node-dot{fill:white}.graph-node.selected .node-halo{opacity:.2}.graph-node.selected .node-core{stroke-width:2.5}.graph-node.muted,.graph-edge.muted{opacity:.12}.graph-detail{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;border:1px solid #d4e1d9;border-radius:4px;background:rgba(255,255,255,.85);padding:13px 17px;margin:4px 16px 0;min-height:81px;box-shadow:0 8px 25px #183e3c04}.graph-detail strong{font-size:12px}.graph-detail p{font-size:10px;line-height:1.7;margin:3px 0 0}.graph-detail a{font-size:11px;color:var(--teal)}.graph-mobile{display:none}.graph-note{font-size:9px;letter-spacing:.03em;color:#97a59c;margin:10px 16px 0}.entry-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;grid-template-rows:160px 160px;gap:15px}.entry{position:relative;padding:25px 28px;border:1px solid var(--line);overflow:hidden;background:#f5f7f3;display:flex;flex-direction:column;align-items:start}.entry:hover{border-color:#a8c1b9}.entry .number{margin-bottom:8px}.entry h3{font-size:19px;margin:0 0 7px}.entry p{font-size:12px;max-width:250px;margin:0}.entry .arrow{position:absolute;right:22px;top:22px;color:var(--teal)}.entry.large{grid-row:span 2;background:#e8eeea;justify-content:end}.entry.large h3{font-size:25px}.entry.large img{position:absolute;width:230px;height:150px;top:5px;right:-15px;opacity:.6}.entry:last-child{grid-column:span 2;background:#edf2f1}.entry:last-child p{max-width:450px}.entry .category{font-size:9px;letter-spacing:.12em;color:#889990;margin-bottom:10px}.path-story{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;margin-top:29px}.path-node{position:relative;text-align:left;border:1px solid var(--line);border-radius:3px;padding:19px 16px;background:#fff;min-height:130px}.path-node:not(:last-child):after{content:'→';position:absolute;right:-17px;top:45px;color:#8da79b}.path-node .number{font-size:13px}.path-node b{display:block;font-size:12px;margin:14px 0 4px}.path-node small{color:#8b9995;font-size:9px}.path-node.active{border-color:var(--teal);background:#edf5f2}.path-detail{border-left:2px solid var(--lime);margin-top:25px;padding:6px 20px;font-size:12px;display:flex;align-items:center;justify-content:space-between;gap:22px}.path-detail p{margin:0}.workbench{background:var(--ink);color:white;border-radius:4px;padding:38px;overflow:hidden}.workbench-head{display:flex;justify-content:space-between;border-bottom:1px solid #ffffff20;padding-bottom:18px;margin-bottom:30px}.workbench-head .mono{color:#86aaa7;font-size:10px}.workbench-head .tag{color:#b3c2b7;border-color:#ffffff30}.workbench-grid{display:grid;grid-template-columns:.8fr 1.5fr 1fr;gap:35px}.document-list{display:grid;gap:8px}.document-list button{background:#ffffff06;border:1px solid #ffffff15;color:#a8b9be;text-align:left;padding:10px 13px;font-size:11px}.document-list button.active{border-color:#7db5a4;color:white;background:#ffffff0b}.document-list button:before{content:'▤';margin-right:12px;color:#86a99f}.pipeline{display:flex;align-items:center;justify-content:space-around;position:relative;gap:8px}.pipeline:before{content:'';position:absolute;height:1px;background:#627777;left:6%;right:6%;top:50%}.pipeline>div{position:relative;text-align:center;font-size:10px;color:#adbfbf}.pipeline i{display:flex;align-items:center;justify-content:center;font-style:normal;width:44px;height:44px;background:#1c364a;border:1px solid #587d7b;border-radius:50%;margin:auto auto 15px;color:#b0c78b;font:18px var(--serif)}.result-card{border:1px solid #ffffff20;background:#ffffff05;padding:19px}.result-card strong{font-size:13px;font-weight:400}.result-card dl{display:grid;grid-template-columns:72px 1fr;gap:9px;font-size:10px;margin-bottom:0}.result-card dt{color:#849ba5}.result-card dd{margin:0;color:#b7cbc7}.workbench-note{font-size:10px;color:#8ea3ab;margin:25px 0 0}.research-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:38px}.feature-article{border-right:1px solid var(--line);padding-right:38px}.feature-image{height:225px;overflow:hidden;background:#e9efed;position:relative;margin-bottom:24px}.feature-image img{width:100%;height:100%;object-fit:cover}.feature-image .image-label{position:absolute;left:18px;bottom:16px;font-size:10px;letter-spacing:.13em;color:#62847a}.article-meta{display:flex;gap:14px;font-size:10px;color:#85928c;margin-bottom:14px;align-items:center}.article-meta .category{color:var(--teal)}.feature-article h3{font-size:25px;margin-bottom:15px}.feature-article p,.side-article p{font-size:12px;line-height:1.95}.feature-article p{margin-bottom:18px}.side-articles{display:flex;flex-direction:column;gap:25px}.side-article{padding-bottom:25px;border-bottom:1px solid var(--line)}.side-article:last-child{border-bottom:0}.side-article h3{font-size:20px;margin-bottom:12px}.side-article p{font-size:11px}.summary-expand{font-size:11px;color:#71807c;margin-bottom:14px}.summary-expand summary{cursor:pointer;font-size:11px;color:var(--teal);margin-bottom:8px}.official-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.official-card{border-top:2px solid #b7c6bf;padding-top:22px}.official-card .number{display:block;margin-bottom:24px}.official-card h3{font-size:18px;line-height:1.8;min-height:64px}.official-card p{font-size:11px;line-height:1.95}.evidence-section{background:#edf1ed}.evidence-grid{display:grid;grid-template-columns:1fr 1.8fr;gap:70px}.evidence-intro h2{max-width:310px;font-size:33px}.evidence-intro p{font-size:13px}.evidence-level{display:grid;grid-template-columns:40px 1fr auto;gap:20px;padding:21px 0;border-bottom:1px solid #d2ded4;align-items:start}.evidence-level:first-child{padding-top:0}.evidence-level h3{font-size:15px;margin:0 0 7px}.evidence-level p{font-size:11px;margin:0}.evidence-level .mono{font-size:10px;color:#8b9d8f;padding-top:3px}.evidence-issues{display:flex;gap:7px;flex-wrap:wrap;margin-top:22px}.evidence-issues .tag{font-size:10px;border-color:#cfdbcf}.news-list{border-top:1px solid var(--line)}.news-item{display:grid;grid-template-columns:125px 1fr 35px;gap:30px;padding:28px 0;border-bottom:1px solid var(--line)}.news-date{font-family:var(--serif);font-size:20px;color:#9aaca2}.news-date small{font-family:'Segoe UI',sans-serif;font-size:9px;color:#92a097;display:block;letter-spacing:.1em}.news-item h3{font-size:18px;margin:8px 0}.news-item .article-meta{margin-bottom:0}.news-item p{font-size:11px;max-width:800px;margin-bottom:0}.news-item>a{align-self:center;color:var(--teal);font-size:23px}.topic-list{display:flex;justify-content:space-between;gap:30px;border-top:1px solid var(--line);padding:32px 0}.topic-list a{font-size:13px;display:flex;gap:20px;align-items:center}.topic-list .number{font-size:12px}.site-footer{background:#e9eeea;padding:45px 0 20px}.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px;padding-bottom:30px}.footer-top p{font-size:10px;max-width:330px;margin:18px 0 0}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;font-size:11px}.footer-title{font-size:10px;letter-spacing:.12em;color:#8a9b90;margin-bottom:16px}.footer-bottom{display:flex;justify-content:space-between;gap:30px;border-top:1px solid #d7dfd8;padding-top:18px;font-size:9px;color:#8e9c93}.back-top{position:fixed;bottom:20px;right:20px;z-index:50;display:flex;width:35px;height:35px;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--paper);font-size:14px}.breadcrumb{display:flex;gap:12px;font-size:10px;color:#8e9b93;padding-top:26px}.breadcrumb a{color:#61837a}.page-intro{display:grid;grid-template-columns:1.3fr 1fr;gap:80px;align-items:center;padding:56px 0 50px}.page-intro h1{font-size:43px;margin-bottom:15px}.page-intro p{font-size:13px;max-width:600px}.page-art{height:180px;width:100%;object-fit:contain}.page-labels{display:flex;gap:8px;margin-top:20px}.directory{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);margin-bottom:50px}.directory a{padding:25px 20px;border-right:1px solid var(--line)}.directory a:last-child{border-right:0}.directory strong{font-size:15px;display:block;margin:12px 0 8px}.directory p{font-size:10px;margin:0}.reading-layout{display:grid;grid-template-columns:225px 1fr;gap:60px;padding:45px 0 80px;border-top:1px solid var(--line);align-items:start}.toc{position:sticky;top:115px}.toc .mono{color:#8fa093;font-size:10px;margin-bottom:18px}.toc a{display:block;font-size:11px;padding:10px 0;border-bottom:1px solid var(--line);color:#657a72;line-height:1.8}.toc a:hover{color:var(--teal)}.articles{min-width:0}.article{padding:0 0 32px;margin-bottom:30px;border-bottom:1px solid var(--line);scroll-margin-top:110px}.article-summary{list-style:none;cursor:pointer;position:relative;padding-right:35px}.article-summary::-webkit-details-marker{display:none}.article-summary:after{content:'＋';position:absolute;right:0;top:35px;color:var(--teal);font-size:22px;font-weight:300}.article[open]>.article-summary:after{content:'−'}.article h2{font-size:23px;margin-bottom:13px}.article-summary>p{font-size:12px;line-height:2;margin-bottom:12px}.read-label{font-size:11px;color:var(--teal)}.article[open] .read-label{display:none}.article-body{border-top:1px solid var(--line);margin-top:25px;padding-top:28px;max-width:800px}.article-body h3{font-size:19px;margin:28px 0 14px}.article-body p{font-size:14px;line-height:2.15;color:#516675}.article-body>section:first-child h3{margin-top:0}.sources{margin-top:30px;background:#edf2ed;padding:20px 24px}.sources h3{font-size:12px;margin:0 0 12px}.sources a{display:block;font-size:11px;line-height:1.9;color:#3e827e;overflow-wrap:anywhere}.sources small{display:block;margin-top:12px;color:#94a296;font-size:9px}.related{margin-top:24px}.related h3{font-size:12px;margin:0 0 12px}.related a{font-size:11px;display:block;color:var(--teal);margin:8px 0}.article-close{background:none;border:0;border-bottom:1px solid #b9cfc6;font-size:11px;color:#6c8c80;margin-top:20px;padding:5px 0}.category-hero{background:#eaf0ec;padding:30px;margin-bottom:45px}.category-hero .path-story{margin:0}.category-hero h2{font-size:18px;margin-bottom:23px}.model-band{background:var(--ink);color:#c5d4cc;padding:32px;margin-bottom:45px}.model-band h2{font-size:18px;color:white}.model-band .pipeline{min-height:120px}.guide-entries{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-bottom:40px}.guide-entries a{border:1px solid var(--line);padding:25px;background:#edf2ed}.guide-entries h2{font-size:18px;margin:15px 0 8px}.guide-entries p{font-size:11px;margin:0}.news-intro{border-left:2px solid var(--lime);padding-left:20px;font-size:12px;margin-bottom:35px}.empty-note{font-size:12px;padding:15px;background:var(--surface)}.status-note{border-top:1px solid var(--line);padding-top:20px;font-size:10px;color:#8c9a92}.article-related-teaser{font-size:10px;margin-top:15px;color:#8c9c93}.article-related-teaser a{color:#527d74}.search-box{display:flex;border:1px solid var(--line);max-width:420px;margin-bottom:25px;background:white}.search-box input{min-width:0;width:100%;background:transparent;border:0;padding:10px 15px;font-size:12px;color:var(--ink)}.search-box span{padding:10px 15px;color:#8ba195}.search-count{font-size:11px;color:#718777;margin-bottom:20px}.article[hidden]{display:none}