:root{
  --ink: oklch(24% 0.025 78);
  --muted: oklch(47% 0.024 78);
  --paper: oklch(97% 0.018 83);
  --wash: oklch(92% 0.024 83);
  --line: oklch(76% 0.035 83);
  --blue: oklch(48% 0.12 253);
  --green: oklch(48% 0.105 150);
  --red: oklch(50% 0.13 30);
  --sidebar: oklch(94% 0.028 85);
  --serif: Georgia, "Songti SC", "STSong", serif;
  --sans: Optima, "Avenir Next", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*{box-sizing:border-box} body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--sans);font-size:16px;line-height:1.62}
a{color:var(--blue);text-decoration:none} a:hover{text-decoration:underline;text-underline-offset:3px}
.wiki-sidebar{position:fixed;inset:0 auto 0 0;width:292px;background:linear-gradient(90deg,var(--sidebar),oklch(96% 0.014 88));border-inline-end:1px solid var(--line);padding:18px 18px 32px;overflow:auto}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);margin-bottom:18px}.brand:hover{text-decoration:none}.brand-mark{display:grid;place-items:center;width:48px;height:48px;border:1px solid var(--ink);border-radius:50%;font-family:var(--serif);font-size:28px}.brand strong{display:block;letter-spacing:.11em}.brand em{display:block;color:var(--muted);font-size:12px;font-style:normal}
.search-box{position:relative;margin:16px 0 22px}.search-box input{width:100%;padding:10px 12px;border:1px solid var(--line);background:oklch(99% 0.012 83);font:inherit}#search-results{position:absolute;z-index:10;top:44px;left:0;right:0;background:var(--paper);border:1px solid var(--line);box-shadow:0 10px 30px oklch(25% 0.03 80/.16);display:none;max-height:360px;overflow:auto}#search-results a{display:block;padding:9px 11px;border-bottom:1px solid var(--wash)}#search-results small{display:block;color:var(--muted)}
.sidebar-nav h2{font-family:var(--serif);font-size:16px;margin:22px 0 7px;padding-top:10px;border-top:1px solid var(--line)}.sidebar-nav ul{list-style:none;margin:0;padding:0}.sidebar-nav li{margin:2px 0}.sidebar-nav a{display:block;color:var(--ink);font-size:14px;padding:4px 6px}.sidebar-nav a.active{background:oklch(88% 0.045 83);font-weight:700}
.wiki-page{margin-left:292px;min-height:100vh}.page-tabs{height:45px;display:flex;align-items:end;justify-content:flex-end;gap:0;border-bottom:1px solid var(--line);background:oklch(98% 0.012 83);padding-right:34px}.page-tabs a{padding:10px 16px;border:1px solid transparent;border-bottom:0;color:var(--blue)}.page-tabs .selected{background:var(--paper);border-color:var(--line);color:var(--ink)}
.article-shell{max-width:1120px;margin:0 auto;padding:36px clamp(20px,4vw,64px) 90px}.article-header{border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:26px}.eyebrow{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;font-size:12px;margin:0 0 6px}.article-header h1{font-family:var(--serif);font-size:clamp(34px,5vw,58px);line-height:1.04;font-weight:500;margin:0;color:oklch(23% 0.032 78)}.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.tag{font-size:12px;border:1px solid var(--line);padding:3px 8px;background:oklch(96% 0.025 83);color:var(--muted)}
.article-content{max-width:82ch}.article-content h1,.article-content h2,.article-content h3{font-family:var(--serif);font-weight:500;line-height:1.18;margin:34px 0 12px}.article-content h1{font-size:36px}.article-content h2{font-size:28px;border-bottom:1px solid var(--line);padding-bottom:5px}.article-content h3{font-size:22px}.article-content p{margin:12px 0}.article-content ul,.article-content ol{padding-left:1.5rem}.article-content li{margin:5px 0}.article-content table{border-collapse:collapse;width:100%;margin:20px 0;background:oklch(98% 0.012 83);font-size:14px}.article-content th{background:oklch(89% 0.035 83);font-weight:700}.article-content th,.article-content td{border:1px solid var(--line);padding:8px 10px;vertical-align:top}.article-content blockquote{margin:18px 0;padding:12px 16px;background:oklch(94% 0.026 83);border:1px solid var(--line)}code{font-family:"SF Mono",Menlo,monospace;background:oklch(92% 0.016 83);padding:1px 4px}pre{overflow:auto;background:oklch(91% 0.018 83);padding:16px;border:1px solid var(--line)}.missing{color:var(--red)}
.metadata-box{margin-top:60px;border-top:1px solid var(--line);padding-top:18px;max-width:82ch}.metadata-box h2{font-family:var(--serif);font-weight:500}.portal-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;margin-top:24px}.portal-panel{border:1px solid var(--line);background:oklch(97% 0.016 83);padding:18px}.portal-panel h2{margin-top:0;background:oklch(89% 0.04 83);padding:8px 10px;font-size:18px}.portal-panel.feature h2{background:oklch(88% 0.05 250)}.portal-panel small{display:block;color:var(--muted)}.lead{font-size:20px;max-width:68ch}.tag-section{max-width:80ch}.tag-section li{display:flex;justify-content:space-between;border-bottom:1px solid var(--wash);padding:6px 0}.tag-section span{color:var(--muted);font-size:13px}
@media (max-width: 860px){.wiki-sidebar{position:static;width:auto;max-height:50vh}.wiki-page{margin-left:0}.page-tabs{justify-content:flex-start;padding-left:16px}.portal-grid{grid-template-columns:1fr}}