:root{--ink:#10213d;--muted:#64748b;--line:#d9e2ef;--surface:#fff;--soft:#f3f7fb;--navy:#0b1730;--navy2:#132a4d;--teal:#27c6aa;--blue:#4f7cff;--gold:#f6c85f;--shadow:0 24px 70px rgba(16,33,61,.12);--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--soft);color:var(--ink);font:16px/1.75 Inter,"Noto Sans TC",system-ui,sans-serif}a{color:inherit;text-decoration:none}.shell{width:min(1160px,calc(100% - 40px));margin:auto}.nav{background:var(--navy);color:#fff;position:sticky;top:0;z-index:20;border-bottom:1px solid #ffffff15}.navin{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-weight:900;letter-spacing:.04em;font-size:19px}.brand span{color:var(--teal)}.navlinks{display:flex;align-items:center;gap:20px;font-size:14px;color:#c7d4e8}.navlinks a:hover{color:#fff}.theme{border:1px solid #ffffff30;background:#ffffff10;color:#fff;padding:8px 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/* Academy upgrade: decision-oriented cards, sources and tool feedback */
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/* Quant research upgrade: shared, compact, accessible finance surfaces */
.quant-page{background:var(--soft)}
.quant-page .tool-page{padding:0 20px 50px}
.quant-page .tool-layout{align-items:start}
.quant-page .panel,.quant-page .result{padding:26px}
.quant-page .panel p{color:var(--muted)}
.quant-page .panel textarea{min-height:154px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px;line-height:1.55}
.quant-page .calc{margin-top:20px}
.quant-page .status{min-height:24px;margin:12px 0 0;color:var(--muted);font-size:13px}
.quant-page .status.ok{color:#087f5b}.quant-page .status.error{color:#c2410c}
.quant-page .formula-note{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--muted);font-size:13px;margin-top:18px}
.quant-page .formula-note strong{color:var(--ink)}
.quant-page .metric-grid{grid-template-columns:repeat(4,minmax(0,1fr));margin:20px 0}
.quant-page .metric-grid .metric{min-width:0}
.quant-page .metric-grid .metric b{overflow-wrap:anywhere}
.quant-page .visual{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:16px;margin-top:20px}
.quant-page .visual h3{font-size:16px;margin:0 0 12px}
.quant-page .bar-chart{height:170px;display:flex;align-items:end;gap:4px;border-bottom:1px solid var(--line);padding:8px 2px 0;overflow:hidden}
.quant-page .bar-chart i{display:block;flex:1;min-width:3px;background:linear-gradient(180deg,var(--blue),var(--teal));border-radius:4px 4px 0 0;opacity:.9}
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.quant-page .source-box{margin-top:20px;border-top:1px solid var(--line);padding-top:16px;color:var(--muted);font-size:13px}
.quant-page .source-box a{color:var(--blue);font-weight:800;text-decoration:underline}
.quant-page .tool-crumb{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:24px;color:var(--muted);font-size:14px}
.quant-page .tool-crumb a{color:var(--blue);font-weight:800}
.quant-page .badge-row{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 18px}
.quant-page .badge-row span{border:1px solid var(--line);border-radius:99px;padding:4px 9px;color:var(--muted);font-size:12px;font-weight:800}
.quant-page .article-jump{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 24px}
.quant-page .article-jump a{padding:8px 11px;border:1px solid var(--line);border-radius:9px;color:var(--blue);font-size:13px;font-weight:800}
@media(max-width:850px){.quant-page .tool-page{padding:0 14px 36px}.quant-page .tool-layout{grid-template-columns:1fr}.quant-page .metric-grid{grid-template-columns:1fr 1fr}.quant-page .tool-crumb{align-items:flex-start;flex-direction:column;gap:6px}}
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