:root { --accent: #1f5fbf; --text: #1d2430; --muted: #5b6573; --line: #e3e7ee; --bg: #ffffff; --code: #f3f5f9; }
@media (prefers-color-scheme: dark) { :root { --text: #e6e9ef; --muted: #a3acb9; --line: #2c3340; --bg: #14181f; --code: #1e242e; --accent: #6b9ef0; } }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--text); background: var(--bg); }
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 24px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.top nav a { margin-left: 16px; color: var(--muted); text-decoration: none; }
.top nav a[aria-current="page"] { color: var(--accent); font-weight: 600; }
main { max-width: 820px; margin: 0 auto; padding: 24px 16px 48px; }
.layout { display: flex; max-width: 1100px; margin: 0 auto; }
.layout main { margin: 0; flex: 1; min-width: 0; }
.toc { width: 240px; flex: none; padding: 24px 16px; position: sticky; top: 0; align-self: flex-start; }
.toc a { display: block; color: var(--muted); text-decoration: none; padding: 3px 0; }
.toc a:hover { color: var(--accent); }
h1 { font-size: 32px; margin: 8px 0; }
h2 { font-size: 22px; margin-top: 36px; padding-top: 8px; border-top: 1px solid var(--line); scroll-margin-top: 12px; }
.lead { font-size: 18px; color: var(--muted); }
a { color: var(--accent); }
code { background: var(--code); padding: 1px 5px; border-radius: 4px; font-size: 14px; word-break: break-all; }
table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: 14px; }
th, td { border: 1px solid var(--line); padding: 8px; text-align: left; vertical-align: top; }
.note { border-left: 3px solid var(--accent); padding: 8px 12px; background: var(--code); }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 24px 16px; border-top: 1px solid var(--line); }
@media (max-width: 760px) { .layout { display: block; } .toc { display: none; } }