:root { --ink: #1e293b; --muted: #64748b; --line: #e2e8f0; --accent: #1d4ed8; --bg: #f8fafc; --panel: #ffffff; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 Inter, system-ui, -apple-system, "Segoe UI", sans-serif; }
.doc-topbar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 14px; padding: 10px 22px; border-bottom: 1px solid var(--line); background: #ffffffee; backdrop-filter: blur(8px); }
.doc-topbar img { width: 26px; height: 26px; object-fit: contain; }
.doc-topbar .crumb { display: flex; align-items: center; gap: 8px; min-width: 0; color: var(--muted); font-size: 14px; }
.doc-topbar .crumb a { color: var(--accent); text-decoration: none; font-weight: 600; }
.doc-topbar .crumb a:hover { text-decoration: underline; }
.doc-topbar .spacer { flex: 1; }
.doc-topbar .actions { display: flex; gap: 8px; }
.doc-topbar .actions a { display: inline-flex; align-items: center; height: 34px; padding: 0 14px; border-radius: 6px; font-size: 13.5px; font-weight: 600; text-decoration: none; }
.doc-topbar .actions a.ghost { border: 1px solid var(--line); color: var(--ink); background: var(--panel); }
.doc-topbar .actions a.primary { background: var(--accent); color: #fff; }
main { max-width: 880px; margin: 0 auto; padding: 34px 22px 80px; }
main h1 { font-size: 30px; line-height: 1.25; margin: 0 0 6px; }
main h2 { margin-top: 2.1em; padding-bottom: 6px; border-bottom: 1px solid var(--line); font-size: 22px; }
main h3 { margin-top: 1.7em; font-size: 18px; }
main a { color: var(--accent); }
main img { max-width: 100%; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
main code { background: #eef2f7; border-radius: 4px; padding: 1px 5px; font: 13.5px/1.5 "JetBrains Mono", ui-monospace, monospace; }
main pre { overflow-x: auto; padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px; background: #0f172a; color: #e2e8f0; }
main pre code { background: transparent; color: inherit; padding: 0; }
main table { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: 14.5px; }
main th, main td { padding: 8px 10px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
main th { background: #f1f5f9; }
main blockquote { margin: 1.2em 0; padding: 8px 16px; border-left: 3px solid var(--accent); background: #eff6ff; border-radius: 0 6px 6px 0; color: #334155; }
.hub-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin-top: 26px; }
.hub-card { display: block; padding: 20px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); text-decoration: none; color: var(--ink); box-shadow: 0 1px 2px rgba(15,23,42,.05); }
.hub-card:hover { border-color: var(--accent); box-shadow: 0 6px 18px rgba(29,78,216,.12); }
.hub-card h2 { margin: 0 0 8px; border: 0; padding: 0; font-size: 18px; color: var(--accent); }
.hub-card p { margin: 0; color: var(--muted); font-size: 14px; }
.hub-card small { display: block; margin-top: 12px; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.section-list { list-style: none; margin: 8px 0 0; padding: 0; }
.section-list li { border-bottom: 1px solid var(--line); }
.section-list a { display: flex; justify-content: space-between; gap: 14px; padding: 10px 4px; text-decoration: none; }
.section-list a:hover { background: #f1f5f9; }
.section-list span { color: var(--muted); font-size: 13.5px; }
.doc-footer { margin-top: 60px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13.5px; display: flex; gap: 14px; flex-wrap: wrap; }
.doc-footer a { color: var(--accent); text-decoration: none; }
@media (max-width: 640px) { .doc-topbar { flex-wrap: wrap; padding: 10px 14px; } main { padding: 24px 14px 60px; } main h1 { font-size: 24px; } }