:root{--ink:#192c3b;--muted:#566b79;--line:#dae4e8;--blue:#196b97;--teal:#167970;--bg:#f5f7f7;--serif:Georgia,"Noto Serif CJK SC","Songti SC",serif}
.version-history{list-style:none;margin:12px 0 0;padding:0;font-size:13px;color:var(--muted)}
.version-history li{padding:9px 0;border-top:1px solid var(--line);display:flex;gap:8px 14px;flex-wrap:wrap}
.version-history strong{color:var(--ink)}
*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.75 system-ui,-apple-system,"Noto Sans CJK SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}a:hover{color:var(--blue)}:focus-visible{outline:3px solid #117bab;outline-offset:5px}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;z-index:20;background:white;padding:12px}.container{width:min(1420px,calc(100% - 80px));margin:auto}.masthead{background:white;border-bottom:1px solid var(--line)}.mastrow{height:86px;display:flex;align-items:center;gap:42px}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}.brand svg{width:35px;height:35px}.brand strong{font-size:25px;letter-spacing:-1px}.brand small{display:block;font-size:11px;line-height:1.3;letter-spacing:3px;color:var(--muted)}.mainnav{display:flex;gap:30px;align-items:center;font-size:15px;font-weight:600}.mainnav a{padding:26px 0}.mainnav .current{color:var(--teal);box-shadow:0 3px var(--teal)}.topnote{margin-left:auto;color:var(--muted);font-size:13px}.intro{display:flex;align-items:flex-end;justify-content:space-between;padding:27px 0 23px;gap:20px}.intro h1{font-size:28px;margin:0;letter-spacing:-.8px;line-height:1.5}.intro p{font-size:14px;color:var(--muted);margin:4px 0 0}.edition{color:var(--muted);font-size:12px;white-space:nowrap;padding-bottom:4px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:1px;color:var(--teal)}.feature-grid{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(320px,1fr);gap:24px}.lead{position:relative;min-height:496px;border-radius:16px;overflow:hidden;background:#172938;color:white;display:flex;align-items:flex-end}.lead>img{position:absolute;width:100%;height:100%;object-fit:cover;object-position:center 44%;inset:0}.lead:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,16,29,.04) 12%,rgba(7,18,32,.14) 33%,rgba(7,18,32,.9) 100%)}.lead-copy{position:relative;z-index:1;padding:30px 34px;width:100%}.lead .eyebrow{color:#fff0d1}.lead h2{font-size:34px;line-height:1.4;letter-spacing:-.7px;max-width:650px;margin:12px 0 10px;text-wrap:balance}.lead a:hover{color:white}.lead p{max-width:650px;color:#eef0f2;margin:0 0 20px;font-size:15px}.lead-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:12px;color:#e1e7ed}.lead-bottom b{font-size:14px;color:white}.pill{display:inline-block;padding:3px 9px;background:#ffffff22;border:1px solid #ffffff4d;border-radius:4px}.side-stack{display:flex;flex-direction:column;gap:18px}.side-card{background:white;border:1px solid var(--line);border-radius:14px;display:grid;grid-template-columns:1fr 126px;gap:18px;padding:22px;flex:1}.side-card h2{font-size:21px;line-height:1.5;margin:8px 0}.side-card p{font-size:13px;color:var(--muted);margin:0 0 13px}.side-card .mini-meta{font-size:11px;color:var(--muted)}.mini-art{border-radius:10px;overflow:hidden;align-self:stretch;display:flex;align-items:center;justify-content:center;background:#e5f0eb}.mini-art svg{width:100%;height:auto}.violet{background:#eeebf8}.label{font-size:11px;font-weight:700;color:var(--teal);background:#eaf4ef;padding:3px 7px;border-radius:4px}.label.purple{color:#674da2;background:#f1ecfb}.under-feature{font-size:10px;color:var(--muted);margin:7px 0 21px}.browse-head{display:flex;align-items:center;justify-content:space-between;gap:24px;border-top:1px solid var(--line);padding:22px 0 15px}.browse-head h2{font-size:21px;margin:0}.browse-head p{font-size:12px;color:var(--muted);margin:2px 0 0}.search{display:flex;align-items:center;gap:10px;background:white;border:1px solid #c7d7dc;border-radius:8px;padding:8px 12px;width:300px}.search svg{width:18px;flex:none}.search input{border:0;background:transparent;min-width:0;width:100%;font-size:13px;color:var(--ink);outline-offset:1px}.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.filters button{border:1px solid var(--line);background:white;color:var(--muted);font-size:13px;padding:7px 16px;border-radius:30px}.filters button[aria-pressed="true"]{background:var(--teal);border-color:var(--teal);color:white}.browse-layout{display:grid;grid-template-columns:minmax(0,1fr) 342px;gap:28px}.story-list{background:white;border:1px solid var(--line);border-radius:14px;padding:0 24px}.list-item{display:grid;grid-template-columns:140px minmax(0,1fr);gap:22px;padding:23px 0;border-bottom:1px solid var(--line)}.list-item:last-of-type{border-bottom:0}.list-art{background:#e8eff1;height:118px;border-radius:8px;overflow:hidden}.list-art svg,.list-art img{width:100%;height:100%;object-fit:cover}.list-item h3{font-size:21px;line-height:1.5;margin:4px 0 6px}.list-item p{font-size:13px;color:var(--muted);margin:0 0 10px}.byline{display:flex;gap:18px;flex-wrap:wrap;font-size:11px;color:var(--muted)}.result-line{padding:13px 0;font-size:12px;color:var(--muted)}.empty{padding:35px 8px;text-align:center}.aside{display:flex;flex-direction:column;gap:20px}.connections{padding:24px;background:#e9f1f1;border-radius:14px;border:1px solid #d2e2e2}.connections h2{font-size:19px;line-height:1.4;margin:8px 0}.connections p{font-size:13px;color:var(--muted);margin:7px 0 16px}.graph{background:#fff9;border-radius:10px;padding:16px}.graph a{display:block;text-align:center;border:1px solid #bcd2d4;border-radius:7px;padding:9px;font-size:13px;font-weight:650;background:#fff}.graph .edge{text-align:center;color:var(--muted);font-size:11px;padding:4px}.graph .leafrow{display:grid;grid-template-columns:1fr 1fr;gap:10px}.aside-note{padding:2px 5px}.aside-note h3{font-size:16px;margin:0 0 9px}.reading-line{display:flex;gap:12px;border-top:1px solid var(--line);padding:14px 0;font-size:13px}.reading-line b{font-family:var(--serif);font-size:21px;color:#6c9197;font-weight:400}.reading-line p{margin:0;color:var(--muted);font-size:12px}.archive-link{margin-top:20px;padding:20px 24px;border:1px solid var(--line);border-radius:12px;display:flex;justify-content:space-between;gap:22px;background:#edf1f5;font-size:14px}.archive-link span{color:var(--muted);font-size:12px}.footer{border-top:1px solid var(--line);margin-top:35px;padding:22px 0 28px;display:flex;justify-content:space-between;gap:25px;font-size:12px;color:var(--muted)}.footer strong{color:var(--ink)}.detail{max-width:1200px;margin:26px auto}.detail:focus{outline:none}.back{font-size:13px;color:var(--teal)}.detail-head{max-width:900px;padding:20px 0 27px}.detail-head h1{font-size:40px;line-height:1.4;letter-spacing:-1px;margin:12px 0 15px;text-wrap:balance}.detail-head .dek{font-size:18px;line-height:1.85;color:var(--muted);margin:0 0 18px}.detail-columns{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:40px}.article-body{min-width:0}.article-body figure{margin:0 0 28px}.article-body figure img{width:100%;height:auto;max-height:none;border-radius:12px}.article-body figcaption{font-size:11px;color:var(--muted);line-height:1.7;margin-top:8px}.article-body h2{font-size:24px;line-height:1.5;margin:29px 0 12px}.article-body p{line-height:1.95}.article-body .summary-box{background:#e8f1ee;border-left:3px solid var(--teal);padding:20px 23px;border-radius:0 10px 10px 0;margin-bottom:25px}.summary-box h2{margin:0 0 7px;font-size:18px}.summary-box p{margin:0;font-size:15px}.article-body .boundary{background:#f7f0e3;border-left:3px solid #b28b41;padding:18px 22px;border-radius:0 9px 9px 0;margin:25px 0}.boundary strong{color:#765c2a}.boundary p{font-size:14px;margin:6px 0 0}.evidence-box{background:white;border:1px solid var(--line);border-radius:12px;padding:22px;height:max-content}.evidence-box h2{font-size:17px;margin:0 0 14px}.evidence-box p{font-size:12px;color:var(--muted)}.evidence-box ol{padding-left:20px;margin-bottom:0}.evidence-box li{margin:16px 0;font-size:13px}.evidence-box a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}.evidence-box small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.relation-inline{border-top:1px solid var(--line);padding-top:18px;margin-top:22px}.relation-inline b{display:block;font-size:13px}.relation-inline p{font-size:12px}.detail-footer{border-top:1px solid var(--line);margin-top:30px;padding-top:18px;font-size:13px;color:var(--muted)}noscript{display:block;background:#fff3d9;padding:12px}.detail:not([hidden])+.footer{margin-top:20px}
@media(min-width:1700px){.container{width:min(1500px,calc(100% - 100px))}.lead{min-height:505px}.side-card{padding:27px}.side-card h2{font-size:23px}.lead h2{font-size:37px}}
@media(max-width:1100px){.container{width:calc(100% - 48px)}.topnote{display:none}.feature-grid{grid-template-columns:1.4fr 1fr;gap:18px}.side-card{grid-template-columns:1fr;padding:20px}.mini-art{display:none}.lead h2{font-size:30px}.lead-copy{padding:25px}.browse-layout{grid-template-columns:minmax(0,1fr) 270px;gap:20px}.detail-columns{gap:24px;grid-template-columns:minmax(0,1fr) 260px}}
@media(max-width:740px){.container{width:calc(100% - 32px)}.mastrow{height:auto;min-height:76px;gap:12px;flex-wrap:wrap;padding:14px 0 0}.brand{gap:8px}.brand strong{font-size:22px}.brand small{font-size:9px}.brand svg{width:29px}.mainnav{width:100%;gap:26px;font-size:13px}.mainnav a{padding:8px 0 12px}.intro{padding:22px 0 17px}.intro h1{font-size:23px}.intro p{font-size:12px;max-width:290px}.edition{display:none}.feature-grid{grid-template-columns:1fr;gap:15px}.lead{min-height:440px}.lead-copy{padding:23px}.lead h2{font-size:29px}.lead p{font-size:14px;margin-bottom:15px}.lead-bottom{align-items:flex-start;font-size:10px}.lead-bottom b{font-size:12px}.side-stack{gap:12px}.side-card{grid-template-columns:minmax(0,1fr) 90px;gap:12px;padding:17px}.mini-art{display:flex}.side-card h2{font-size:19px;margin:7px 0}.side-card p{font-size:12px;margin-bottom:8px}.under-feature{font-size:9px;line-height:1.6;margin-bottom:18px}.browse-head{display:block;padding-top:19px}.browse-head h2{font-size:21px}.search{width:100%;margin-top:15px}.filters{gap:6px}.filters button{padding:6px 12px;font-size:12px}.browse-layout{grid-template-columns:1fr;gap:20px}.story-list{padding:0 16px}.list-item{grid-template-columns:82px minmax(0,1fr);gap:13px;padding:19px 0}.list-art{height:94px}.list-item h3{font-size:18px}.list-item p{font-size:12px}.byline{font-size:10px;gap:6px 12px}.aside{display:grid;grid-template-columns:1fr}.connections{padding:21px}.archive-link{display:block;padding:17px}.archive-link span{display:block;margin-top:5px}.footer{display:block;font-size:11px}.footer>div+div{margin-top:10px}.detail{margin-top:20px}.detail-head{padding:18px 0 22px}.detail-head h1{font-size:29px}.detail-head .dek{font-size:16px}.detail-columns{grid-template-columns:1fr}.article-body h2{font-size:22px}.article-body p{font-size:15px}.article-body figure img{max-height:none}.evidence-box{order:2}.detail-footer{margin-top:24px}.summary-box{padding:18px!important}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.search button{border:0;background:var(--blue);color:white;border-radius:6px;padding:5px 10px;cursor:pointer}.search input{min-width:0;flex:1}.list-item[hidden]{display:none!important}.filters a{padding:7px 14px;border-radius:20px;font-size:13px;color:var(--muted)}.filters a[aria-current="page"]{color:white;background:var(--ink)}.pager{display:flex;gap:20px;padding:20px 0}.credit-line{font-size:11px;color:var(--muted);margin:8px 0 0}.excerpt-source{font-size:12px;color:var(--blue)}.graph-note{font-size:12px;color:var(--muted)}.technical-item{background:#e9f0f3;color:var(--blue);display:grid;place-items:center;font:800 28px var(--mono)}.section-kind{color:var(--muted);font-size:12px;letter-spacing:.5px}.read-note{margin-top:8px;font-size:12px;color:var(--muted)}

.filters a{padding:7px 16px;border-radius:20px;font-size:13px;color:var(--muted)}.filters a[aria-current="page"]{color:#fff;background:var(--ink)}.search button{min-height:32px;white-space:nowrap}.side-card .mini-art{max-width:130px}.list-item .mini-art{height:130px;border-radius:10px}.list-item .mini-art svg{height:120px;width:100%}.lead img{position:absolute;width:100%;height:100%;object-fit:cover}.lead h2{max-width:650px}.lead h2 a{display:block}.search{height:auto}.search input{width:100%}.graph a{word-break:break-word}.graph-note{line-height:1.6}

.toc strong{display:block;margin-bottom:10px}.toc a{display:block;padding:5px 0;line-height:1.65}.toc{overflow-wrap:anywhere}
.archive-art{min-width:0;overflow:hidden;border-radius:12px}.archive-art svg{display:block;width:100%;height:auto}.list-item .archive-art{max-height:130px}.list-item .archive-art svg{height:130px}.side-card .archive-art{max-width:180px}