:root{--bg:#0a0a0a;--surface:#141414;--surface2:#1a1a1a;--line:#2a2a2a;--fg:#f6f6f6;--fg2:#c2c2c2;--mut:#999;--gold:#facc15;--max:1240px;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,select{touch-action:manipulation}button{cursor:pointer}a:hover{color:var(--gold)}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #7cc4ff;outline-offset:4px}button{color:inherit}p{margin:0 0 16px}h1,h2,h3{margin:0;line-height:1.35}h2{font-size:28px;letter-spacing:-.03em}h3{font-size:18px}.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}.site-head{border-bottom:1px solid 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.more-results{text-align:center;padding:23px 0 0}.more-results p{font-size:12px;color:var(--mut);margin:0 0 12px}.more-results button{border:1px solid #4c4320;border-radius:6px;background:#221e0f;color:var(--gold);padding:10px 24px;font-size:14px}
/* Main-site integration and reader-focused ranking guide */
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@media(max-width:800px){.intro{gap:24px;grid-template-columns:1.4fr 1fr}.intro h1{font-size:32px}.snapshot{padding:19px}.snapshot h2{font-size:22px}.hero-subtitle{font-size:17px}.research-badges{gap:6px}.research-badges span{font-size:11px;padding:2px 6px}}@media(max-width:700px){.intro{display:block;padding:25px 0}.intro h1{font-size:33px}.snapshot{margin-top:23px}.snapshot h2{font-size:22px}.snapshot h2 br{display:none}.research-badges{margin:12px 0 16px}.mini-stats{padding-top:12px}.snapshot-link{margin-top:13px}.page-nav{gap:8px 17px;font-size:12px}.editor-note{font-size:11px;margin-bottom:26px}.preview-tag{font-size:10px}.breadcrumb{font-size:11px!important;gap:7px!important}.method-grid.concise article{padding:20px}.section-intro{font-size:14px}.about-ranking>p{font-size:14px}.article-credit{flex-direction:column;font-size:11px}.reading-notes{padding-top:30px}.section-top h2{font-size:23px}.hero-subtitle{font-size:17px}}
/* Clear model attribution, prominent page navigation and local Chinese copy */
:root{--max:1240px}.ssh-inner,.ssh-footer-inner{max-width:1240px}.intro{grid-template-columns:1.12fr 1fr;gap:44px;padding:26px 0 28px;align-items:center}.intro h1{font-size:clamp(33px,3.4vw,45px);line-height:1.25;margin-bottom:16px}.intro .eyebrow{font-family:inherit;letter-spacing:.07em;font-size:13px}.hero-subtitle{font-size:17px;font-weight:600;line-height:1.7;margin-bottom:11px}.intro .lead{font-size:15px;line-height:1.8;color:#bcbcbc;margin-bottom:20px}.hero-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin:0 0 21px}.primary-action{display:inline-flex;align-items:center;gap:22px;background:var(--gold);color:#111;border-radius:7px;font-size:15px;font-weight:750;padding:11px 18px;min-height:46px}.primary-action:hover{background:#ffe775;color:#111}.secondary-action{font-size:14px;color:var(--fg2);text-decoration:underline;text-underline-offset:5px}.model-panel{background:#141414;border:1px solid #333;border-top:3px solid var(--gold);border-radius:8px;padding:20px 22px}.model-panel-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:7px}.model-panel-heading .eyebrow{margin:0}.model-panel-heading a{font-size:12px;color:#c6b657}.model-panel h2{font-size:22px;line-height:1.4;margin-bottom:12px}.model-row{display:flex;align-items:center;gap:11px;padding:11px 0;border-bottom:1px solid #2e2e2e}.model-row>div{flex:1}.model-row strong{font-size:15px;display:block;line-height:1.4}.model-row strong span{font-size:11px;color:#999;font-weight:400;margin-left:6px}.model-row p{font-size:14px;color:#e2e2e;margin:2px 0 0;line-height:1.5}.model-row>a{font-size:11px;color:#d7c878;border:1px solid #4b4326;border-radius:4px;padding:3px 7px;white-space:nowrap}.model-rationale{font-size:12px;color:#bcbcbc;line-height:1.75;margin:13px 0 12px}.model-rationale strong{color:#efefef}.model-protocol{display:flex;gap:8px;flex-wrap:wrap;font-size:11px;color:#ddd}.model-protocol span{border-left:2px solid #b7a229;padding-left:7px}.model-caption{font-size:11px;line-height:1.6;color:#999;margin:11px 0 0}.page-nav{position:sticky;top:68px;z-index:30;display:flex;gap:9px;align-items:center;background:#141414;border:1px solid #3c3c3c;box-shadow:0 6px 22px #0005;border-radius:9px;padding:11px 12px;flex-wrap:nowrap}.page-nav-label{color:#b5b5b5;font-size:12px;white-space:nowrap;padding:0 8px}.page-nav a{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:8px 10px;border:1px solid #424242;border-radius:6px;background:#202020;font-size:13px;font-weight:600;white-space:nowrap;color:#e3e3e3}.page-nav a span{font:11px ui-monospace,monospace;color:#aaa}.page-nav a b{font-size:13px;font-weight:400;color:#999}.page-nav a:first-of-type,.page-nav a[aria-current=location]{background:#facc15;border-color:#facc15;color:#111}.page-nav a:first-of-type span,.page-nav a:first-of-type b,.page-nav a[aria-current=location] span,.page-nav a[aria-current=location] b{color:#66530a}.page-nav a:hover{border-color:var(--gold);color:var(--gold)}.page-nav a:first-of-type:hover{color:#111;background:#ffe46b}.editor-note{margin:14px 0 26px}.ranking-page section[id],.reading-notes details[id]{scroll-margin-top:155px}html{scroll-padding-top:12px}.view-tabs{gap:10px;padding:5px;background:#141414;border:1px solid #343434;border-radius:8px;margin-bottom:6px}.view-tabs button{flex:1;padding:11px 16px;border:1px solid transparent;border-radius:5px;color:#bfbfbf;background:#141414}.view-tabs button[aria-pressed=true]{border-color:#e6c53c;background:#2b260f;color:#ffdd50}.view-tabs button:hover{background:#252525}.filters label{font-size:13px;color:#b9b9b9}.filters select,.filters input{font-size:14px;min-height:46px}.section-top .eyebrow{font-family:inherit;letter-spacing:.08em}.table-scroll .aggregate-table{font-size:13px;min-width:1120px}.aggregate-table th{font-size:11px;padding:13px 10px;white-space:normal}.aggregate-table td{padding:18px 10px}.aggregate-table .merchant-cell{min-width:205px;max-width:240px}.aggregate-table .merchant-name{font-size:14px}.aggregate-table .ai-score{font-size:17px}.aggregate-table .index-score{font-size:23px}.aggregate-table .ai-meta{font-size:10px}.external-cell{min-width:94px}.external-link{display:inline-flex;align-items:center;justify-content:center;gap:5px;min-height:35px;padding:5px 9px;border:1px solid #474747;border-radius:5px;font-size:12px;color:#e6e6e6;background:#202020;white-space:nowrap}.external-link:hover{border-color:#cfb638;color:var(--gold);background:#28240f}.external-link.map-link{border-color:#415548;color:#cfdfd2}.external-cell .row-sub{font-size:10px;max-width:100px}.external-missing{font-size:12px;color:#949494}.scroll-hint{display:none}.contact-profile-links{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0}.contact-profile-links .external-link{font-size:14px;padding:8px 15px}.source-grid{display:none}#sources .source-grid{display:grid}.source-grid a{padding:7px 0;display:inline-block}.table-note{line-height:1.8}
@media(max-width:1050px){.intro{gap:28px}.page-nav-label{display:none}.page-nav a{font-size:12px;gap:6px;padding:8px}.page-nav a span{display:none}.scroll-hint{display:block;font-size:12px;color:#c8bb85;margin-bottom:10px}.aggregate-table .merchant-cell{position:sticky;left:0;background:#101010;z-index:1}.aggregate-table th:nth-child(2){position:sticky;left:0;background:#1a1a1a;z-index:2}.table-scroll{max-width:100%}}@media(max-width:820px){.page-nav{top:64px}.intro{grid-template-columns:1fr 1fr;gap:24px}.intro h1{font-size:34px}.model-panel{padding:17px}.model-row>a{display:none}.hero-actions{gap:12px}.hero-subtitle{font-size:16px}.intro .lead{font-size:14px}}@media(max-width:700px){.intro{display:block;padding:22px 0 20px}.intro h1{font-size:34px}.model-panel{margin-top:22px}.model-panel-heading .eyebrow{font-size:12px}.model-panel h2{font-size:20px}.model-row>a{display:block}.model-row{padding:9px 0}.model-row strong span{font-size:10px}.hero-actions{margin-bottom:17px}.primary-action{font-size:14px;padding:10px 15px}.secondary-action{font-size:13px}.page-nav{margin-left:-5px;margin-right:-5px;overflow-x:auto;justify-content:flex-start;padding:8px;gap:7px;border-radius:7px}.page-nav a{flex:0 0 auto;padding:8px 12px;font-size:12px;min-height:39px}.page-nav a b{display:none}.view-tabs button{font-size:13px;padding:10px 5px}.view-tabs span{display:none}.ranking-page section[id],.reading-notes details[id]{scroll-margin-top:140px}.aggregate-table{min-width:1090px!important}.aggregate-table .merchant-cell{min-width:165px;max-width:180px}.aggregate-table .merchant-name{font-size:13px}.aggregate-table .row-sub{font-size:11px}.aggregate-table .affiliated{margin-left:0}.aggregate-table td{padding:16px 9px}.editor-note{font-size:11px}.section-top h2{font-size:24px}#sources .source-grid{display:block}.model-rationale{font-size:13px}.model-caption{font-size:11px}.filters label{font-size:12px}}

/* Full-width headline and continuous FAQ answers. */
.intro .hero-heading{grid-column:1/-1;width:100%;min-width:0}.intro{row-gap:20px}.intro .hero-heading h1{font-size:clamp(25px,3vw,38px);line-height:1.4;margin:0;letter-spacing:-.03em}.hero-heading .eyebrow{margin-bottom:12px}.intro .hero-heading h1 span{white-space:nowrap}.method-detail p,.method-detail .formula{max-width:none;width:100%;white-space:normal;overflow-wrap:anywhere}.method-detail p{margin-top:15px;margin-bottom:0}.method-detail a{display:inline}.reading-notes .method-detail{width:100%}.page-nav{flex-wrap:nowrap}.intro .hero-heading+.hero-heading{display:none}@media(max-width:700px){.intro .hero-heading{margin-bottom:18px}.intro .hero-heading h1{font-size:27px}.model-panel{margin-top:22px}.method-detail p{font-size:14px;line-height:1.85}}