:root{--ink:#26282B;--muted:#70747A;--main:#34383D;--aux:#8A6A52;--dark:#17191C;--bg:#F5F3EF;--soft:#E9E5DF;--accent:#C85A32;--line:#D7D1C8;--white:#fff;--radius:18px;--shadow:0 20px 50px rgba(23,25,28,.08);--shell:min(1180px,calc(100vw - 40px));font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.72}body.menu-open{overflow:hidden}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}img{max-width:100%;display:block}button,input{font:inherit}.shell{width:var(--shell);margin-inline:auto}.skip-link{position:fixed;left:12px;top:-50px;z-index:99;background:var(--dark);color:#fff;padding:10px 14px;border-radius:8px}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;z-index:50;background:rgba(245,243,239,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(52,56,61,.12)}.header-inner{min-height:82px;display:grid;grid-template-columns:auto 1fr auto;gap:26px;align-items:center}.brand{display:flex;align-items:center;gap:12px;min-width:max-content}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--dark);color:#fff;font-weight:900;font-size:22px;box-shadow:inset 0 -3px 0 rgba(200,90,50,.7)}.brand strong{display:block;font-size:20px;letter-spacing:.04em}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.05em}.site-nav{justify-self:end;display:flex;align-items:center;gap:4px}.site-nav a{padding:9px 12px;border-radius:10px;color:#4d5055;font-weight:700;font-size:14px}.site-nav a:hover,.site-nav a.is-active{background:var(--soft);color:var(--dark)}.menu-toggle{display:none}.search-toggle,.menu-toggle{border:1px solid var(--line);background:transparent;border-radius:10px;padding:9px 12px;font-weight:800;color:var(--main);cursor:pointer}.search-toggle:hover,.menu-toggle:hover{border-color:var(--accent);color:var(--accent)}.search-panel{background:var(--dark);color:#fff;border-top:1px solid #2c2f34}.search-panel[hidden]{display:none}.search-form{padding:22px 0 26px;display:grid;gap:8px}.search-form label{font-size:13px;color:#c7c8ca}.search-form div{display:grid;grid-template-columns:1fr auto;gap:8px}.search-form input{width:100%;border:1px solid #3f4247;background:#24272b;color:#fff;border-radius:10px;padding:13px 14px;outline:none}.search-form input:focus{border-color:#8e918f;box-shadow:0 0 0 3px rgba(255,255,255,.06)}.search-form button{border:0;background:var(--accent);color:#fff;border-radius:10px;padding:0 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var(--line);background:#efebe5}.ticker{min-height:54px;display:flex;align-items:center;gap:28px;overflow:auto;white-space:nowrap;font-size:13px}.ticker strong{color:var(--dark)}.ticker span{color:var(--muted)}.ticker span:before{content:"•";color:var(--accent);margin-right:10px}.section-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:46px;padding-block:76px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:28px}.section-heading h2{font-size:32px;line-height:1.1;margin:8px 0 0;color:var(--dark)}.section-heading>a{font-size:13px;font-weight:900;border-bottom:1px solid currentColor}.story-list{border-top:1px solid var(--line)}.story-row{display:grid;grid-template-columns:62px minmax(0,1fr) auto;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start}.story-time{font:900 13px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--aux)}.story-row h3{font-size:21px;line-height:1.25;margin:5px 0 7px}.story-row p{color:var(--muted);margin:0}.story-state{border:1px solid #d7c3b5;color:#8b543e;background:#f3e9e3;border-radius:99px;padding:5px 9px;font-size:11px;font-weight:900;white-space:nowrap}.sidebar-card{align-self:start;position:sticky;top:112px;background:var(--soft);padding:28px;border-radius:18px}.sidebar-card h2{font-size:26px;line-height:1.2;margin:10px 0 20px}.check-list{list-style:none;padding:0;margin:0 0 18px;counter-reset:item}.check-list li{position:relative;padding:0 0 20px 36px}.check-list li:before{counter-increment:item;content:counter(item);position:absolute;left:0;top:2px;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--dark);color:#fff;font-size:11px;font-weight:900}.check-list strong{display:block}.check-list span{display:block;color:var(--muted);font-size:13px}.topic-strip{padding-bottom:76px}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.topic-card{background:#fff;border:1px solid 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h2{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:#c9cbce;margin:0 0 12px}.footer-grid a{display:block;color:#d7d9dc;margin:7px 0;font-size:14px}.footer-bottom{margin-top:38px;padding-top:18px;border-top:1px solid #303338;display:flex;justify-content:space-between;color:#888d92;font-size:12px}.page-shell{padding-top:64px;padding-bottom:88px}.page-header{max-width:850px;margin-bottom:44px}.page-header h1{font-size:50px}.page-header p{font-size:17px;color:var(--muted);max-width:760px}.timeline-page{max-width:980px}.timeline-entry{display:grid;grid-template-columns:72px 1fr;gap:24px;padding:0 0 34px;position:relative}.timeline-entry:not(:last-child):before{content:"";position:absolute;left:35px;top:58px;bottom:-4px;width:1px;background:var(--line)}.timeline-date{width:72px;height:72px;border-radius:50%;background:var(--soft);display:grid;place-items:center;align-content:center;line-height:1;color:var(--dark);z-index:1}.timeline-date 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img{width:100%;height:100%;object-fit:cover;filter:saturate(.6) contrast(1.05)}.video-poster:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent,rgba(23,25,28,.62))}.video-poster span{position:absolute;left:12px;bottom:12px;z-index:2;color:#fff;font-size:10px;font-weight:900}.video-copy{padding:20px}.video-copy small{color:var(--accent);font-weight:900}.video-copy h2{font-size:20px;line-height:1.28;margin:7px 0}.video-copy p{font-size:13px;color:var(--muted)}.video-copy>a{font-size:12px;font-weight:900;color:var(--accent)}.principle-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:52px}.principle-grid section{background:var(--dark);color:#fff;border-radius:16px;padding:24px;min-height:250px}.principle-grid section>span{font-size:12px;color:#b1b5b9}.principle-grid h2{font-size:22px;line-height:1.2;margin:36px 0 12px}.principle-grid p{color:#c7c9cc;font-size:14px}.method-long{max-width:920px;padding:32px 0;border-top:1px solid var(--line)}.method-long h2{font-size:30px}.method-long>p{font-size:17px;color:#5b5f63}.method-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.method-columns>div{background:var(--soft);padding:22px;border-radius:14px}.method-columns h3{margin-top:0}.method-columns li{margin:8px 0;color:#55595d}.compact-page{max-width:900px}.info-panel{background:#fff;border:1px solid rgba(52,56,61,.1);border-radius:16px;padding:26px;margin:14px 0}.info-panel h2{margin-top:0}.info-panel p,.info-panel li{color:#5f6368}.link-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.link-list a{padding:12px;background:var(--soft);border-radius:10px;font-weight:800}.not-found{min-height:55vh;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;max-width:760px}.not-found h1{font-size:50px;line-height:1.1;margin:16px 0}.not-found p{font-size:18px;color:var(--muted)}
@media(max-width:980px){:root{--shell:min(100% - 28px,900px)}.header-inner{grid-template-columns:auto auto auto;gap:10px}.menu-toggle{display:inline-flex;justify-self:end}.site-nav{position:fixed;inset:82px 0 auto 0;background:var(--bg);border-bottom:1px solid var(--line);padding:18px 14px 22px;display:none;grid-template-columns:1fr 1fr;box-shadow:0 20px 30px rgba(23,25,28,.1)}.site-nav.is-open{display:grid}.site-nav a{background:#fff;border:1px solid var(--line)}.search-toggle{justify-self:end}.brand small{display:none}.hero{grid-template-columns:1fr;gap:34px;padding-top:50px}.section-grid{grid-template-columns:1fr}.sidebar-card{position:static}.topic-grid{grid-template-columns:1fr 1fr}.card-grid{grid-template-columns:1fr 1fr}.article-shell{grid-template-columns:1fr;gap:20px}.article-aside{display:grid;grid-template-columns:1fr 1fr;gap:20px}.principle-grid{grid-template-columns:1fr 1fr}.video-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
@media(max-width:680px){:root{--shell:calc(100% - 24px)}.header-inner{min-height:70px;grid-template-columns:1fr auto auto}.brand-mark{width:38px;height:38px}.brand strong{font-size:18px}.site-nav{inset:70px 0 auto}.search-toggle,.menu-toggle{font-size:0;width:40px;height:40px;padding:0;position:relative}.search-toggle:after{content:"⌕";font-size:20px}.menu-toggle:after{content:"☰";font-size:18px}.hero{padding-top:36px;padding-bottom:42px}.hero h1,.page-header h1,.article-header h1{font-size:38px}.hero-copy p{font-size:16px}.lead-primary{padding:20px}.lead-primary h2{font-size:25px}.ticker{gap:18px}.section-grid{padding-block:54px;gap:28px}.section-heading{align-items:flex-start}.section-heading h2{font-size:27px}.story-row{grid-template-columns:46px 1fr;gap:13px}.story-state{grid-column:2;justify-self:start}.sidebar-card{padding:22px}.topic-grid{grid-template-columns:1fr}.archive-banner{padding:28px 24px;display:block}.archive-banner h2{font-size:29px}.archive-banner .button{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}.page-shell{padding-top:42px}.timeline-entry{grid-template-columns:52px 1fr;gap:14px}.timeline-date{width:52px;height:52px}.timeline-entry:not(:last-child):before{left:25px;top:48px}.timeline-body h2{font-size:21px}.card-grid{grid-template-columns:1fr}.article-shell{padding-top:38px}.article-header .dek{font-size:17px}.status-box{grid-template-columns:1fr;gap:4px}.article-aside{grid-template-columns:1fr}.video-card{grid-template-columns:1fr}.video-poster{height:210px}.principle-grid{grid-template-columns:1fr}.principle-grid section{min-height:0}.method-columns{grid-template-columns:1fr}.link-list{grid-template-columns:1fr}.search-form div,.large-search div{grid-template-columns:1fr}.search-form button,.large-search button{min-height:44px}.not-found h1{font-size:38px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media print{.site-header,.site-footer,.hero-actions,.search-panel,.article-aside{display:none!important}body{background:#fff}.shell{width:100%}.article-shell{display:block}.article-main{max-width:none}.article-section{break-inside:avoid}}
/* Detail states and reading refinements */
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(23,25,28,.06)}
.event-card,.topic-card,.video-card,.lead-item,.story-row{transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease,background-color .18s ease}
.event-card:hover{transform:translateY(-2px);border-color:#c7bfb5;box-shadow:0 16px 34px rgba(23,25,28,.06)}
.story-row:hover{background:rgba(255,255,255,.32)}
.story-row:focus-within{outline:2px solid rgba(200,90,50,.35);outline-offset:4px;border-radius:8px}
.lead-item a:focus-visible,.story-row a:focus-visible,.topic-card:focus-visible,.event-card a:focus-visible,.site-nav a:focus-visible,.button:focus-visible,.text-link:focus-visible,.footer-grid a:focus-visible{outline:3px solid rgba(200,90,50,.35);outline-offset:4px;border-radius:6px}
.article-main p{max-width:72ch}.article-main h2{color:var(--dark)}
.article-main strong{color:var(--dark)}
.article-timeline li:last-child{padding-bottom:0}
.article-timeline li:last-child span{background:var(--accent)}
.event-card:nth-child(3n+2){background:#fcfbf9}.event-card:nth-child(3n+3){background:#f8f5f1}
.topic-card:nth-child(even){background:#fbfaf8}.topic-card:hover b{letter-spacing:.02em}
.search-results article:hover h2 a{color:var(--accent)}
.video-card:hover{box-shadow:0 18px 38px rgba(23,25,28,.07);transform:translateY(-2px)}
.video-card:hover .video-poster img{transform:scale(1.025)}
.video-poster img{transition:transform .3s ease}
.page-header strong{color:var(--dark)}
.info-panel ul{padding-left:22px}.info-panel li+li{margin-top:8px}
.info-panel a{color:var(--accent);font-weight:800}
.archive-banner .eyebrow{color:#e17a56}.archive-banner .eyebrow:before{background:#e17a56}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
@supports(text-wrap:balance){.hero h1,.page-header h1,.article-header h1,.section-heading h2,.archive-banner h2{text-wrap:balance}}
@media(min-width:981px){.lead-stack{min-height:500px}.article-aside{position:sticky;top:110px;align-self:start}.topic-card:first-child{grid-column:span 1}.story-row>div:nth-child(2){padding-right:14px}}
@media(max-width:520px){.hero-actions{align-items:flex-start;flex-direction:column}.button{width:100%}.archive-banner .button{width:auto}.lead-item h2{font-size:18px}.lead-primary h2{font-size:23px}.ticker{font-size:12px}.section-heading{margin-bottom:20px}.story-row p{font-size:13px}.timeline-body>p{font-size:14px}.page-header p{font-size:15px}.event-card{min-height:0}.article-section h2,.source-note h2{font-size:24px}.article-section p,.source-note p{font-size:16px}.status-box{padding:18px}.footer-grid{gap:28px}.footer-bottom{margin-top:28px}.principle-grid section{padding:20px}.method-long h2{font-size:26px}}