:root{--bg:#ffffff;--surface:#f6f8fa;--border:#d0d7de;--line-subtle:#eaeef2;--text:#1f2328;--muted:#59636e;--accent:#0a3069;--radius:14px}:root[data-theme=dark]{--bg:#0d1117;--surface:#161b22;--border:#30363d;--line-subtle:#21262d;--text:#e6edf3;--muted:#8b949e;--accent:#58a6ff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);transition:background-color .2s ease,color .2s ease}a{color:inherit;text-decoration:none}.container{width:min(980px,92vw);margin:0 auto}.gh-header{border-bottom:1px solid var(--line-subtle);background:var(--bg);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);position:-webkit-sticky;position:sticky;top:0;z-index:10}.gh-header-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px;width:min(1240px,96vw);margin:0 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ul{margin:0;padding-left:18px;display:grid;grid-gap:4px;gap:4px}.about-disclosure-references a{color:var(--muted);font-size:13px;word-break:break-all}@media (max-width:1024px){.featured-card,.featured-link{grid-template-columns:1fr}.post-detail-content-grid{grid-template-columns:minmax(0,1fr);gap:20px}.post-toc-sidebar{position:static;order:-1}.overview-layout{width:min(980px,92vw)}.overview-main-layout{grid-template-columns:1fr;gap:24px}.overview-profile-column{position:static}.overview-main-grid{grid-template-columns:minmax(0,1fr)}.overview-aside{position:static}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.about-hero-card{grid-template-columns:1fr}}@media (max-width:768px){.gh-header-inner{min-height:56px;width:min(1240px,calc(100vw - 24px))}.gh-header-tools{gap:8px}.gh-share-feedback{right:12px;top:60px;font-size:11px}.hero{padding-top:44px}.section-gap{padding:16px 0 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