:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--text:#1a1a1a;--text-secondary:#5a5a66;--background:#fff;--surface:#f7f8fa;--border:#e5e5ea;--brand-blue:#2e6bb8;--brand-green:#2fae7a;--link:#2e6bb8;--shadow:0 1px 2px #1018280f, 0 4px 12px #1018280f}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--text:#f0f0f2;--text-secondary:#a8a8b3;--background:#101114;--surface:#1a1b1f;--border:#2a2b30;--brand-blue:#6ea8ff;--brand-green:#4fd8a0;--link:#6ea8ff;--shadow:0 1px 2px #0000004d, 0 4px 16px #00000059}}*{box-sizing:border-box}body{background:var(--background);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.65}a{color:var(--link)}.topbar{border-bottom:1px solid var(--border);background:var(--background);z-index:10;position:sticky;top:0}.topbar-inner{align-items:center;gap:10px;max-width:1080px;margin:0 auto;padding:14px 24px;display:flex}.topbar-logo{width:28px;height:28px}.topbar-title{letter-spacing:-.01em;font-size:1.05rem;font-weight:600}.hero{background:linear-gradient(135deg, color-mix(in srgb, var(--brand-blue) 12%, transparent), color-mix(in srgb, var(--brand-green) 12%, transparent));border-bottom:1px solid var(--border)}.hero-inner{max-width:1080px;margin:0 auto;padding:56px 24px 40px}.hero-inner h1{letter-spacing:-.02em;margin:0 0 10px;font-size:2.4rem}.hero-sub{color:var(--text-secondary);margin:0 0 18px;font-size:1.05rem}.badge{background:var(--surface);border:1px solid var(--border);color:var(--text-secondary);border-radius:999px;padding:6px 12px;font-size:.85rem;display:inline-block}.layout{grid-template-columns:220px minmax(0,1fr);align-items:start;gap:48px;max-width:1080px;margin:0 auto;padding:40px 24px 100px;display:grid}@media (width<=800px){.layout{grid-template-columns:1fr;gap:24px}}.toc{position:sticky;top:72px}.toc-title{text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);margin:0 0 10px;font-size:.75rem;font-weight:600}.toc ol{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.toc a{color:var(--text-secondary);border-radius:8px;padding:6px 10px;font-size:.92rem;text-decoration:none;display:block}.toc a:hover{background:var(--surface);color:var(--text)}@media (width<=800px){.toc{border:1px solid var(--border);background:var(--surface);border-radius:12px;padding:16px;position:static}.toc ol{flex-flow:wrap}.toc a{padding:4px 8px}}.content{min-width:0}.lede{color:var(--text-secondary);margin-top:0;font-size:1.05rem}.content section{margin-top:3rem;padding-top:.5rem}.content section:first-of-type{margin-top:2.5rem}h2{letter-spacing:-.01em;align-items:center;gap:12px;margin:0 0 1rem;scroll-margin-top:80px;font-size:1.4rem;display:flex}.num{background:linear-gradient(135deg, var(--brand-blue), var(--brand-green));color:#fff;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;font-size:.9rem;font-weight:700;display:inline-flex}h3{margin-top:1.5rem;font-size:1.05rem}p,li{color:var(--text)}ul{padding-left:1.4rem}.check-list{flex-direction:column;gap:8px;padding-left:0;list-style:none;display:flex}.check-list li{padding-left:1.7rem;position:relative}.check-list li:before{content:"✓";color:var(--brand-green);font-weight:700;position:absolute;left:0}.callout{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--brand-blue);border-radius:8px;padding:14px 16px}.page-footer{border-top:1px solid var(--border);color:var(--text-secondary);margin-top:4rem;padding-top:1.5rem;font-size:.9rem}@media print{.topbar,.toc{display:none}.layout{display:block}}