:root{--ink:#17352d;--muted:#62786f;--line:#dce5dc;--paper:#f7f8f3;--card:#fff;--green:#236a55;--green-soft:#e6f0e9;--blue:#347d97;--blue-soft:#e4f0f2;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper)}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0}
a{color:inherit}
button{font:inherit}
button:focus-visible,a:focus-visible{outline:3px solid #e69741;outline-offset:3px}
.topbar{min-height:72px;padding:12px clamp(20px,4vw,60px);display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);background:#fff}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-size:16px;font-weight:650;letter-spacing:-.03em}
.mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--green);color:#fff;font-size:28px;font-family:Georgia,serif}
.slash{color:#a7b8ac;padding:0 3px}
.back{font-size:13px;font-weight:650;text-decoration:none}
.back:hover,footer a:hover{text-decoration:underline}
main{max-width:1320px;margin:auto;padding:0 clamp(20px,4vw,60px) 64px}
.intro{padding:clamp(52px,7vw,96px) 0 48px;max-width:920px}
.eyebrow{font-size:11px;font-weight:750;letter-spacing:.17em;text-transform:uppercase;color:var(--green);margin:0 0 19px}
.intro .eyebrow{display:flex;gap:18px}
.intro .eyebrow span{color:#9caea2}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(43px,6.2vw,80px);line-height:1.04;letter-spacing:-.06em;margin-bottom:26px;font-weight:700}
h1 em{font-style:normal;color:var(--green)}
.lead{font-size:clamp(17px,2vw,22px);line-height:1.55;max-width:750px;color:#435e53;margin-bottom:28px}
.scope{display:flex;align-items:flex-start;gap:10px;max-width:830px;padding:14px 17px;background:#edf3ec;border:1px solid #d8e6d9;border-radius:9px;color:#4b6658;font-size:12px;line-height:1.5}
.scope strong{white-space:nowrap;color:var(--green)}
.scope-dot{flex:none;margin-top:5px;width:7px;height:7px;border-radius:50%;background:var(--green)}
section.overview,section.kv,section.layers,section.source{border-top:1px solid var(--line);padding-top:38px;margin-top:18px}
.section-heading{margin-bottom:24px}
.section-heading .eyebrow{margin-bottom:8px}
.section-heading h2{font-size:clamp(27px,3.2vw,37px);letter-spacing:-.045em;margin-bottom:10px}
.section-heading>p:last-child:not(.eyebrow){color:var(--muted);max-width:650px;line-height:1.6;margin:0;font-size:14px}
.overview-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.model-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;min-height:255px;display:flex;flex-direction:column}
.nanbeige-card{border-top:4px solid var(--green)}
.qwen-card{border-top:4px solid var(--blue)}
.model-head{display:flex;align-items:center;gap:14px}
.model-letter{display:grid;place-items:center;width:47px;height:47px;flex:none;border-radius:10px;background:var(--green-soft);color:var(--green);font-weight:750;font-size:25px}
.qwen-card .model-letter{background:var(--blue-soft);color:var(--blue)}
.model-family{font-size:10px;text-transform:uppercase;letter-spacing:.13em;color:var(--muted);font-weight:750;margin-bottom:3px}
.model-head h3{font-size:22px;letter-spacing:-.04em;margin:0}
.model-summary{font-size:14px;line-height:1.6;color:#526a5f;margin:19px 0 14px;max-width:48ch}
.hero-number{display:flex;align-items:baseline;gap:10px;margin-top:auto}
.hero-number strong{font-size:38px;letter-spacing:-.06em}
.hero-number span{font-size:12px;color:var(--muted);font-weight:650}
.spec-wrap{margin-top:16px;overflow-x:auto;border:1px solid var(--line);background:#fff;border-radius:12px}
.spec-table{width:100%;border-collapse:collapse;min-width:570px}
.spec-table caption{text-align:left;padding:18px 22px 11px;font-size:14px;font-weight:750}
.spec-table th,.spec-table td{padding:12px 22px;border-top:1px solid #e9eee8;text-align:left;font-size:13px}
.spec-table thead th{color:var(--muted);font-size:10px;letter-spacing:.1em;text-transform:uppercase}
.spec-table tbody th{font-weight:550;width:42%}
.spec-table tbody td{font-variant-numeric:tabular-nums;font-weight:650}
.kv-panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}
.kv-control-heading{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:14px}
.kv-control-heading label{font-weight:700;font-size:14px}
.kv-control-heading output{font-weight:750;font-size:18px;font-variant-numeric:tabular-nums;color:var(--green)}
.kv-control input{display:block;width:100%;accent-color:var(--green);cursor:pointer}
.kv-endpoints{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;margin-top:6px}
.kv-share{font-size:11px;color:var(--muted);margin:8px 0 0;text-align:right}
.kv-results{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}
.kv-result{min-width:0;border:1px solid var(--line);border-top:4px solid var(--green);border-radius:10px;background:#fafcf9;padding:19px 21px;display:flex;flex-direction:column;gap:4px}
.kv-result.qwen-kv{border-top-color:var(--blue);background:#f9fcfd}
.kv-result p{font-size:12px;font-weight:700;color:var(--muted);margin:0 0 5px}
.kv-result strong{font-size:clamp(31px,4vw,45px);letter-spacing:-.055em;line-height:1.1;font-variant-numeric:tabular-nums}
.kv-result span{font-size:15px;font-weight:650;font-variant-numeric:tabular-nums}
.kv-result small{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;margin-top:7px}
.kv-ratio{font-size:13px;font-weight:750;color:var(--green);margin:19px 0 0}
.kv-formula{font-size:12px;font-weight:600;color:#435e53;margin:13px 0 0;line-height:1.5}
.kv-scope{font-size:12px;line-height:1.65;color:#526a5f;margin:12px 0 0;max-width:880px}
.kv-scope code{background:#e9efe7;padding:2px 4px;border-radius:3px}
.kv-scope a{color:var(--green);font-weight:700}
.legend{display:flex;gap:24px;flex-wrap:wrap;font-size:12px;font-weight:650;margin-bottom:16px}
.legend span{display:inline-flex;align-items:center;gap:8px}
.swatch{width:12px;height:12px;border-radius:3px;display:inline-block}
.swatch.full{background:var(--green)}
.swatch.linear{background:var(--blue)}
.map-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.map-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;min-width:0}
.map-title{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:17px}
.map-title h3{font-size:17px;letter-spacing:-.02em;margin:0}
.map-title span{font-size:11px;color:var(--muted);white-space:nowrap}
.layer-grid{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:5px}
.layer{min-width:0;aspect-ratio:1.4;border:1px solid transparent;border-radius:4px;cursor:pointer;font-size:10px;font-weight:750;font-variant-numeric:tabular-nums;transition:transform .12s,box-shadow .12s}
.layer.full{color:#fff;background:var(--green)}
.layer.linear{color:#fff;background:var(--blue)}
.layer:hover{transform:translateY(-2px)}
.layer[aria-pressed="true"]{box-shadow:0 0 0 3px #f3ad54;transform:translateY(-2px)}
.inspect{margin-top:16px;background:#e9f0e9;border:1px solid #d1e1d2;border-radius:12px;padding:24px}
.inspect .eyebrow{margin-bottom:8px}
.inspect h3{font-size:21px;letter-spacing:-.03em;margin-bottom:7px}
.inspect>p:not(.eyebrow){font-size:13px;color:#526b5c;line-height:1.5;max-width:760px}
.inspect dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0 0}
.inspect dl>div{background:#fff;border-radius:7px;padding:12px 14px;min-width:0}
.inspect dt{font-size:10px;color:var(--muted);font-weight:650;margin-bottom:6px}
.inspect dd{font-size:15px;line-height:1.3;font-weight:720;margin:0;overflow-wrap:anywhere}
.source{padding-bottom:24px}
.source>p{max-width:800px;line-height:1.65;color:#526a5f;font-size:14px}
.source code{font-size:.9em;background:#e9efe7;padding:2px 4px;border-radius:3px}
.source-links{display:flex;flex-wrap:wrap;gap:12px}
.source-links a{display:flex;justify-content:space-between;gap:24px;min-width:min(100%,290px);background:#fff;border:1px solid var(--line);padding:15px 17px;border-radius:8px;text-decoration:none;font-weight:700;font-size:13px}
.source-links a:hover{border-color:var(--green)}
.source-links span{color:var(--muted);font-size:11px}
footer{border-top:1px solid var(--line);padding:25px clamp(20px,4vw,60px);display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:12px}
footer a{color:var(--green);font-weight:650;text-decoration:none}

@media(max-width:760px){.topbar{min-height:60px}
.brand{font-size:13px}
.back{font-size:11px}
.intro{padding-top:53px}
.scope{display:grid;grid-template-columns:8px 1fr;gap:3px 10px}
.scope span:last-child{grid-column:2}
.scope-dot{margin-top:5px}
.overview-grid,.map-pair,.kv-results{grid-template-columns:1fr}
.model-card{min-height:220px}
.inspect dl{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media(max-width:500px){.spec-table{min-width:0;table-layout:fixed}
.spec-table tbody th{width:38%}
.spec-table th,.spec-table td{padding:10px 7px;font-size:12px;line-height:1.35;overflow-wrap:anywhere}
.spec-table thead th{font-size:10px;letter-spacing:.03em}
.spec-table caption{padding:15px 7px 9px}
}

@media(max-width:430px){main{padding-left:16px;padding-right:16px}
.topbar{padding-left:16px;padding-right:16px}
.brand{gap:7px;font-size:12px}
.mark{width:29px;height:29px;font-size:23px}
.back{max-width:106px;text-align:right}
.layer-grid{gap:4px}
.layer{font-size:9px}
.inspect{padding:17px}
.inspect dl{gap:7px}
.inspect dl>div{padding:10px}
.inspect dd{font-size:13px}
.kv-panel{padding:16px}
.kv-control-heading{display:block}
.kv-control-heading output{display:block;margin-top:4px}
.kv-result{padding:16px}
footer{display:block;padding-left:16px;padding-right:16px}
footer a{display:block;margin-top:8px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
.layer{transition:none}
}