@charset "UTF-8";
:root{--paper:#f6f4ee;--surface:#fffefa;--ink:#213a32;--muted:#6c756c;--green:#234f3f;--soft:#e9ede3;--line:#dcded3;--accent:#a85f3e;--serif:"Songti SC","STSong","Noto Serif CJK SC",serif;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;--mono:"SFMono-Regular",Consolas,monospace}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.8 var(--sans);-webkit-font-smoothing:antialiased}
::selection{background:#d9e4cf;color:var(--ink)}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button,a,input{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:5px}
img,svg{display:block;max-width:100%}
button{color:inherit}
.shell{width:min(1120px,calc(100% - 80px));margin:0 auto}
.skip-link{position:fixed;left:20px;top:-80px;padding:10px 18px;background:var(--green);color:white;z-index:100}
.skip-link:focus{top:16px}
.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:rgba(246,244,238,.96);backdrop-filter:blur(14px)}
.header-inner{height:90px;display:flex;align-items:center;gap:32px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:20px;font-weight:650;letter-spacing:-.8px;white-space:nowrap}
.brand img{width:31px;height:34px}
.brand-dot{color:var(--accent)}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:30px}
.main-nav a{font-size:14px;position:relative;color:#616c61;padding:10px 0}
.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--green)}
.main-nav a[aria-current=page]:after{content:"";height:3px;width:15px;position:absolute;bottom:0;left:calc(50% - 7px);background:var(--accent);border-radius:3px}
.header-actions{display:flex;align-items:center;gap:15px;margin-left:8px}
.icon-link,.menu-toggle{display:grid;place-items:center;width:36px;height:38px;border:0;background:none}
.icon-link svg,.menu-toggle svg{width:20px;height:20px}
.menu-toggle{display:none}
.eyebrow{display:block;font:11px/1.6 var(--mono);letter-spacing:1.7px;text-transform:uppercase;color:var(--green)}
.eyebrow .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin:0 10px 1px 0}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{font-family:var(--serif);font-weight:600}
.hero{padding:82px 0 72px;display:grid;grid-template-columns:1.05fr 1fr;align-items:center;gap:35px}
.hero h1{font-size:clamp(40px,4.6vw,63px);line-height:1.36;letter-spacing:-1.8px;margin:24px 0}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-copy>p{font-size:15px;line-height:2.1;color:var(--muted);max-width:440px;margin-bottom:28px}
.hero-buttons{display:flex;align-items:center;gap:25px;flex-wrap:wrap}
.button{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:12px 22px;background:var(--green);color:#fff;border:1px solid var(--green);font-size:14px;border-radius:3px;transition:background .18s,transform .18s}
.button:hover{background:#193f31;transform:translateY(-2px)}
.text-link{font-size:14px;display:inline-flex;align-items:center;gap:12px}
.text-link:hover{color:var(--accent)}
.hero-figure{margin:0;position:relative}
.hero-figure img{width:100%;height:auto}
.hero-figure figcaption{font:10px/1.6 var(--mono);text-align:right;letter-spacing:1px;color:#80877b;padding-right:30px}
.entry-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.entry{padding:25px 30px 26px 0;display:flex;gap:18px}
.entry+.entry{padding-left:30px;border-left:1px solid var(--line)}
.entry-number{font:11px var(--mono);padding-top:7px;color:var(--accent)}
.entry strong{font-size:16px;font-weight:550;display:block;margin-bottom:2px}
.entry p{font-size:12px;color:var(--muted);margin:0}
.entry:hover strong{color:var(--accent)}
.section{padding:65px 0}
.section-header{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:32px}
.section-header h2{font-size:30px;margin:9px 0 0;line-height:1.4}
.section-header .text-link{color:var(--muted);padding-bottom:3px;flex-shrink:0}
.notes-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.featured-note{padding:28px 32px 32px;background:var(--soft);position:relative;min-height:310px}
.featured-note .note-index{font:12px var(--mono);color:var(--accent)}
.featured-note h3{font-size:29px;line-height:1.55;margin:23px 0 14px;max-width:400px}
.featured-note p{font-size:14px;line-height:1.9;color:var(--muted);margin-bottom:26px}
.featured-note .math-line{font:italic 23px var(--serif);color:var(--green);margin-bottom:22px;letter-spacing:1px}
.featured-note .arrow{position:absolute;bottom:27px;right:30px;font-size:22px}
.featured-note:hover h3{color:var(--accent)}
.note-rows{display:flex;flex-direction:column;justify-content:space-between}
.note-row{border-bottom:1px solid var(--line);padding:18px 0 22px}
.note-row:first-child{padding-top:0}
.note-row:last-child{border-bottom:0;padding-bottom:0}
.meta{display:flex;align-items:center;gap:13px;flex-wrap:wrap;font:11px/1.7 var(--mono);color:var(--muted);letter-spacing:.1px}
.meta .category{color:var(--accent)}
.note-row h3{font-family:var(--sans);font-size:17px;font-weight:550;line-height:1.6;margin:10px 0 7px}
.note-row p{font-size:13px;color:var(--muted);line-height:1.8;margin:0}
.note-row:hover h3,.article-row:hover h2{color:var(--accent)}
.research-band{background:#eaece3;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:58px 0 62px}
.research-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:65px;align-items:center}
.research-intro h2{font-size:33px;line-height:1.6;margin:14px 0 18px}
.research-intro p{font-size:14px;color:var(--muted);line-height:2;max-width:360px;margin-bottom:25px}
.project-feature{background:var(--green);color:#fffefa;padding:32px 34px;position:relative;overflow:hidden}
.project-feature:after{content:"";position:absolute;width:180px;height:180px;border:1px solid #ffffff1b;border-radius:50%;right:-65px;top:55px;pointer-events:none}
.project-feature .eyebrow{color:#b9cbbb;font-size:10px}
.project-feature h3{font-size:26px;line-height:1.5;margin:22px 0 14px;position:relative}
.project-feature p{font-size:13px;color:#d1dfd0;line-height:1.9;max-width:370px}
.project-stack{display:flex;gap:8px;flex-wrap:wrap;margin-top:27px}
.project-stack span{border:1px solid #ffffff3b;padding:3px 8px;font:10px/1.5 var(--mono);color:#d9e4d7}
.project-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:27px;font-size:12px}
.live-dot{display:inline-block;width:5px;height:5px;background:#d3e1bb;border-radius:50%;margin-right:8px}
.blog-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.blog-teaser{padding-top:23px;border-top:1px solid var(--line)}
.blog-teaser h3{font-size:24px;line-height:1.6;margin:13px 0}
.blog-teaser p{font-size:14px;color:var(--muted);line-height:1.9;margin-bottom:15px}
.blog-teaser:hover h3{color:var(--accent)}
.about-line{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:30px 0 45px;border-top:1px solid var(--line)}
.about-line p{font-size:14px;color:var(--muted);margin:0;max-width:650px}
.site-footer{border-top:1px solid var(--line);padding:27px 0 30px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:25px;font-size:11px;color:var(--muted)}
.footer-inner .footer-name{font:12px var(--mono);color:var(--green)}
.footer-links{display:flex;gap:22px}
.footer-links a:hover{color:var(--accent)}
.page-header{padding:65px 0 37px;max-width:760px}
.page-header h1{font-size:46px;line-height:1.4;letter-spacing:-1px;margin:16px 0 18px}
.page-header p{color:var(--muted);font-size:15px;line-height:2;margin-bottom:0}
.filter-bar{display:flex;gap:9px;flex-wrap:wrap;padding:12px 0 28px;align-items:center}
.filter-button{border:1px solid var(--line);background:transparent;font-size:12px;padding:5px 13px;border-radius:2px}
.filter-button[aria-pressed=true]{background:var(--green);border-color:var(--green);color:white}
.filter-count{font-size:11px;color:var(--muted);margin-left:auto}
.article-list{padding-bottom:65px}
.article-row{display:grid;grid-template-columns:55px 1fr 110px;gap:20px;padding:31px 0;border-top:1px solid var(--line)}
.article-number{font:12px var(--mono);padding-top:6px;color:var(--accent)}
.article-row h2{font-size:25px;line-height:1.5;margin:6px 0 11px}
.article-row p{font-size:14px;color:var(--muted);line-height:1.9;max-width:700px;margin-bottom:12px}
.article-end{display:flex;align-items:flex-start;justify-content:flex-end;font-size:12px;color:var(--muted);padding-top:8px;gap:15px}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{font-size:11px;color:var(--muted)}
.tag:before{content:"#";color:#a4a998;margin-right:2px}
.empty-state{padding:48px 0;color:var(--muted);font-size:14px}
.project-page-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:10px 0 60px}
.project-page-grid .project-feature{min-height:330px}
.method-note{border:1px solid var(--line);padding:30px}
.method-note h2{font-size:24px;margin:12px 0}
.method-note p{font-size:14px;color:var(--muted);line-height:1.9}
.method-steps{margin:23px 0;padding:0;list-style:none}
.method-steps li{padding:11px 0;border-bottom:1px solid var(--line);display:flex;gap:15px;font-size:13px}
.method-steps span{font:11px var(--mono);color:var(--accent);padding-top:4px}
.article-header{padding:47px 0 34px;max-width:850px}
.breadcrumbs{font-size:12px;color:var(--muted);margin-bottom:26px}
.breadcrumbs a:hover{color:var(--accent)}
.article-header h1{font-size:43px;line-height:1.45;letter-spacing:-.7px;margin:20px 0 20px}
.article-lede{font-size:17px;color:var(--muted);line-height:2;margin-bottom:22px;max-width:760px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 210px;gap:80px;align-items:start;padding-bottom:65px}
.article-body{min-width:0;font-size:16px;line-height:2}
.article-body h2{font-size:26px;line-height:1.6;margin:37px 0 15px;scroll-margin-top:115px}
.article-body h2:first-child{margin-top:0}
.article-body p{margin-bottom:20px;color:#3f4c42}
.article-body ul,.article-body ol{padding-left:24px;margin-bottom:24px;color:#3f4c42}
.article-body li{padding-left:4px;margin-bottom:8px}
.article-body a{color:var(--green);text-decoration:underline;text-underline-offset:4px;text-decoration-color:#a3b5a1}
.article-body code{font:12px/1.9 var(--mono);background:#e9ede3;padding:3px 6px;overflow-wrap:anywhere;border-radius:3px}
.article-body pre{background:#203c32;color:#e6ecdf;padding:22px 24px;overflow:auto;font:12px/1.9 var(--mono);border-radius:3px;margin:23px 0}
.article-body pre code{padding:0;background:none;color:inherit;overflow-wrap:normal}
.callout{border-left:3px solid var(--accent);padding:17px 22px;background:#eeeae0;font-size:14px;line-height:1.9;margin:24px 0;color:#4c574a}
.toc{position:sticky;top:126px;padding-left:20px;border-left:1px solid var(--line);margin-top:4px}
.toc-label{font:10px var(--mono);letter-spacing:1.4px;margin-bottom:17px;color:var(--muted)}
.toc a{display:block;font-size:12px;line-height:1.75;margin:12px 0;color:var(--muted)}
.toc a:hover{color:var(--accent)}
.toc .back-top{margin-top:26px;color:var(--green)}
.related{border-top:1px solid var(--line);padding-top:25px;margin-top:45px}
.related h2{font:13px var(--sans);margin:0 0 18px}
.related a{display:block;margin:10px 0;font-size:14px}
.sources{font-size:13px;border-top:1px solid var(--line);padding-top:20px;margin-top:35px}
.sources h2{font:14px var(--sans);margin:0 0 15px}
.sources li{margin-bottom:10px;overflow-wrap:anywhere}
.about-page{display:grid;grid-template-columns:1.2fr .8fr;gap:75px;padding:0 0 70px;align-items:start}
.about-copy p{font-size:16px;line-height:2.15;color:#4f5b50;margin:0 0 23px}
.about-note{background:var(--soft);padding:30px}
.about-note h2{font-size:23px;margin:0 0 17px}
.about-note dl{font-size:13px;margin:0}
.about-note dt{color:var(--muted);margin-top:15px}
.about-note dd{margin:3px 0}
.interests{border-top:1px solid var(--line);padding-top:27px;margin-top:32px}
.interests h2{font-size:24px}
.interests h3{font:15px var(--sans);margin:23px 0 8px}
.search-form{display:flex;align-items:center;border-bottom:2px solid var(--green);padding-bottom:13px;gap:15px;margin:5px 0 19px}
.search-form svg{width:23px;flex-shrink:0}
.search-form input{font-size:20px;padding:9px 0;border:0;outline:none;background:transparent;color:var(--ink);width:100%;min-width:0}
.search-form input::placeholder{color:#969d8f}
.search-form button{border:0;background:none;font-size:13px;color:var(--muted);padding:5px}
.search-status{font-size:12px;color:var(--muted);margin-bottom:33px}
.search-result{padding:23px 0;border-top:1px solid var(--line)}
.search-result h2{font-size:22px;margin:9px 0}
.search-result p{font-size:14px;color:var(--muted);margin:0}
.search-result a:hover h2{color:var(--accent)}
.search-panel{max-width:850px;min-height:420px;padding-bottom:65px}
.demo{padding:24px 26px;background:#e9ede3;border:1px solid #d6dece;margin:0 0 35px;border-radius:3px}
.demo h2{font:17px var(--sans);margin:0 0 8px}
.demo>p{font-size:13px;margin-bottom:20px;color:var(--muted)}
.demo-controls{display:grid;grid-template-columns:1fr 100px;gap:25px;align-items:end}
.demo label{font-size:12px;display:block}
.demo input[type=range]{width:100%;accent-color:var(--green);margin:12px 0 5px}
.demo input[type=number]{width:100%;background:var(--surface);border:1px solid #c5cfbf;padding:5px 9px;color:var(--ink);font-size:13px;margin-top:7px}
.demo svg{width:100%;height:auto;margin:15px 0 8px;overflow:visible}
.demo .demo-result{font-size:13px;margin:0;color:var(--green)}
.demo .demo-result[data-unstable=true]{color:var(--accent)}
.demo-reset{background:transparent;border:0;padding:6px 0;margin-top:10px;font-size:11px;text-decoration:underline;text-underline-offset:3px}
.reading-line{height:2px;background:var(--accent);position:fixed;top:89px;left:0;width:0;z-index:30;pointer-events:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.architecture{display:flex;align-items:center;gap:15px;margin:25px 0 35px;padding:25px 20px;background:var(--soft);border:1px solid var(--line);font-size:12px;text-align:center}
.architecture>div{flex:1;min-width:0;line-height:1.8}
.architecture strong{display:block;font-size:14px;color:var(--green)}
.architecture>b{color:var(--accent)}
[hidden]{display:none!important}
@media(min-width:1500px){.shell{width:min(1200px,calc(100% - 120px))}.hero{padding-top:100px;padding-bottom:85px}.hero h1{font-size:67px}}
@media(max-width:1000px){.main-nav{gap:20px}.hero{gap:10px}.hero h1{font-size:48px}.hero-copy>p{font-size:14px}.research-grid{gap:40px}.article-layout{gap:40px;grid-template-columns:minmax(0,1fr) 175px}.notes-layout,.blog-grid{gap:32px}.article-header h1{font-size:38px}}
@media(max-width:760px){.shell{width:calc(100% - 40px)}.header-inner{height:72px;gap:10px}.brand{font-size:19px}.brand img{width:27px;height:29px}.header-actions{margin-left:auto;gap:7px}.menu-toggle{display:grid}.main-nav{display:none;position:absolute;left:0;right:0;top:72px;background:var(--paper);border-bottom:1px solid var(--line);padding:15px 20px;gap:20px;flex-wrap:wrap;margin:0}.main-nav[data-open=true]{display:flex}.main-nav a{font-size:14px;padding:9px 0}.main-nav a[aria-current=page]:after{bottom:0}.hero{grid-template-columns:1fr;padding:46px 0 35px;gap:15px}.hero h1{font-size:42px;line-height:1.4;letter-spacing:-1px;margin:20px 0}.hero-copy>p{max-width:540px;margin-bottom:24px}.hero-figure{max-width:400px;margin:2px auto 0;width:100%}.hero-figure figcaption{font-size:8px;padding-right:20px}.hero-buttons{gap:22px}.button{padding:10px 18px}.entry-strip{grid-template-columns:1fr}.entry{padding:18px 0;gap:16px}.entry+.entry{border-left:0;border-top:1px solid var(--line);padding:18px 0}.entry strong{font-size:15px}.entry p{font-size:12px}.section{padding:43px 0}.section-header{margin-bottom:25px;gap:12px}.section-header h2{font-size:26px}.section-header .text-link{font-size:12px}.notes-layout{grid-template-columns:1fr;gap:28px}.featured-note{padding:24px;min-height:280px}.featured-note h3{font-size:26px}.featured-note p{max-width:90%}.note-row{padding:17px 0}.research-band{padding:39px 0}.research-grid{grid-template-columns:1fr;gap:28px}.research-intro h2{font-size:29px}.research-intro p{max-width:100%}.project-feature{padding:26px}.project-feature h3{font-size:25px}.blog-grid{grid-template-columns:1fr;gap:25px}.blog-teaser h3{font-size:23px}.about-line{align-items:flex-start;flex-direction:column;padding:25px 0 32px;gap:15px}.footer-inner{align-items:flex-start;flex-direction:column;gap:14px}.page-header{padding:42px 0 25px}.page-header h1{font-size:35px;margin:12px 0 16px}.page-header p{font-size:14px}.filter-bar{gap:8px;padding-bottom:23px}.filter-count{width:100%;margin:6px 0 0}.article-list{padding-bottom:40px}.article-row{grid-template-columns:25px minmax(0,1fr);gap:12px;padding:24px 0}.article-end{display:none}.article-row h2{font-size:23px}.article-row p{font-size:13px}.article-number{font-size:10px}.project-page-grid{grid-template-columns:1fr;gap:25px;padding-bottom:40px}.method-note{padding:24px}.article-header{padding-top:30px}.article-header h1{font-size:32px;line-height:1.55;letter-spacing:-.5px}.article-lede{font-size:15px}.article-layout{display:block;padding-bottom:40px}.toc{display:none}.article-body{font-size:15px;line-height:2.05}.article-body h2{font-size:24px;margin-top:30px}.article-body pre{font-size:11px;padding:18px}.callout{padding:15px 18px;font-size:13px}.about-page{display:block;padding-bottom:40px}.about-copy p{font-size:15px}.about-note{margin-top:30px;padding:24px}.search-form input{font-size:17px}.search-result h2{font-size:21px}.search-status{margin-bottom:25px}.demo{padding:19px}.demo-controls{gap:15px;grid-template-columns:1fr 75px}.reading-line{top:71px}}
@media(max-width:520px){.architecture{flex-direction:column;gap:11px}.architecture>b{transform:rotate(90deg)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}