:root{--bg: #ffffff;--bg-alt: #f8fafc;--fg: #0f172a;--muted: #64748b;--brand: #111827;--accent: #ff9900;--accent-2: #2563eb;--border: #e5e7eb;--max: 1100px;--radius: 10px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--fg);background:var(--bg);line-height:1.65}.container{max-width:var(--max);margin:0 auto;padding:0 1.25rem}a{color:var(--accent-2)}img{max-width:100%;height:auto}.site-header{border-bottom:1px solid var(--border);background:#fff;position:sticky;top:0;z-index:50}.topbar{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem}.brand{font-weight:800;font-size:1.2rem;letter-spacing:-.02em;color:var(--brand);text-decoration:none}.nav{display:flex;gap:1.25rem;flex-wrap:wrap}.nav a{color:var(--fg);text-decoration:none;font-size:.92rem;font-weight:500}.nav a:hover{color:var(--accent-2)}.hero{padding:3rem 0 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.5rem;letter-spacing:-.02em}.article-meta{color:var(--muted);font-size:.9rem;margin-bottom:1rem}.article-meta span+span:before{content:" · "}.article-wrap h2{margin:2rem 0 .75rem;font-size:1.4rem;letter-spacing:-.01em}.article-wrap h3{margin:1.5rem 0 .5rem;font-size:1.15rem}.article-wrap p{margin:.75rem 0}.article-wrap ul,.article-wrap ol{padding-left:1.5rem}.article-wrap blockquote{border-left:4px solid var(--accent);margin:1rem 0;padding:.5rem 1rem;background:#fffbeb;color:#78350f}.toc{background:#f8fafc;border:1px solid var(--border);border-radius:8px;padding:1rem 1.25rem;margin:1.5rem 0}.toc h4{margin:0 0 .5rem;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.toc ol{margin:0;padding-left:1.25rem}.site-footer{background:#0f172a;color:#cbd5e1;padding:2.5rem 0 1.5rem;margin-top:3rem}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:2rem}.site-footer h4{color:#fff;margin:0 0 .5rem;font-size:.9rem;text-transform:uppercase;letter-spacing:.06em}.site-footer a{display:block;color:#cbd5e1;text-decoration:none;padding:.15rem 0;font-size:.9rem}.site-footer a:hover{color:#fff}.brand-footer{color:#fff;font-size:1.05rem}.feature-list{padding-left:1.25rem}.feature-list li{margin:.35rem 0}.two-col{display:grid;grid-template-columns:1.2fr 1fr;gap:2rem}@media (max-width: 760px){.two-col{grid-template-columns:1fr}}.info-panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem}.text-link{color:var(--accent-2);font-weight:600}