:root{--bg:#f6f7f9;--card:#fff;--ink:#1d2330;--quiet:#5d6676;--line:#e2e6ec;--accent:#8a1538;--accent-soft:#f8e9ee;--chip:#eef1f5}
@media (prefers-color-scheme:dark){:root{--bg:#14171c;--card:#1d2128;--ink:#e8ebf0;--quiet:#a0a8b6;--line:#2e343e;--accent:#e2668b;--accent-soft:#3a2129;--chip:#2a2f38}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:68px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
a{color:var(--accent)}
.top{position:sticky;top:0;z-index:10;background:#8a1538;color:#fff}
.top-in{max-width:1180px;margin:0 auto;padding:0 16px;display:flex;align-items:center;gap:18px;min-height:52px;flex-wrap:wrap}
.brand{font-weight:700;font-size:17px;color:#fff;text-decoration:none;white-space:nowrap;padding:8px 0;display:flex;align-items:center;gap:10px}
.logo{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:#fff;flex:none}
.logo img{display:block}
.nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.nav a{color:#fff;text-decoration:none;font-size:15px;padding:6px 12px;border-radius:8px;opacity:.88}
.nav a:hover{background:rgba(255,255,255,.14);opacity:1}
.nav a[aria-current=page]{background:#fff;color:#8a1538;opacity:1;font-weight:600}
.wrap{max-width:1180px;margin:0 auto;padding:20px 16px 48px;display:grid;grid-template-columns:280px minmax(0,1fr);gap:28px;align-items:start}
.toc{position:sticky;top:68px;max-height:calc(100vh - 84px);overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 10px 14px 14px;font-size:14.5px}
.toc-title{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--quiet);margin:0 0 8px 6px}
.toc ol{list-style:none;margin:0;padding:0}
.toc li{margin:0}
.toc a{display:block;padding:5px 8px;border-radius:7px;color:var(--ink);text-decoration:none;border-left:3px solid transparent}
.toc a:hover{background:var(--chip)}
.toc .l2>a{font-weight:600;margin-top:4px}
.toc .l3 a{padding-left:20px;color:var(--quiet);font-size:13.5px}
.toc a.on{background:var(--accent-soft);border-left-color:var(--accent);color:var(--accent)}
.toc-mobile{display:none}
main{min-width:0}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:8px 26px 20px;margin-bottom:18px}
.lead{padding-top:18px}
h1{font-size:28px;margin:0 0 4px}
h2{font-size:22px;margin:22px 0 10px;padding-bottom:8px;border-bottom:2px solid var(--accent);color:var(--accent)}
h3{font-size:17.5px;margin:22px 0 8px}
p{margin:8px 0}
ul,ol{margin:8px 0;padding-left:24px}
li{margin:5px 0}
figure{margin:16px 0}
figure img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:8px}
.hero{display:flex;gap:24px;align-items:center;padding-bottom:18px}
.hero img{height:auto;flex:none}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin:18px 0}
.lv{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;text-decoration:none;color:var(--ink)}
.lv:hover{border-color:var(--accent)}
.lv b{display:block;font-size:20px;color:var(--accent);margin-bottom:6px}
.lv span{font-size:14px;color:var(--quiet)}
.home{max-width:980px;margin:0 auto;padding:24px 16px 48px}
footer{max-width:1180px;margin:0 auto;padding:0 16px 32px;color:var(--quiet);font-size:13px;display:flex;align-items:center;gap:14px}
footer img{height:auto}
@media (max-width:860px){
 .top{position:static}
 .nav{margin-left:0;flex-wrap:nowrap;overflow-x:auto;padding-bottom:8px;width:100%}
 .nav a{white-space:nowrap}
 .top-in{gap:0}
 html{scroll-padding-top:12px}
 .wrap{grid-template-columns:1fr;gap:14px;padding-top:14px}
 .toc{display:none}
 .toc-mobile{display:block;margin-bottom:14px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 14px}
 .toc-mobile summary{cursor:pointer;font-weight:600}
 .toc-mobile ol{list-style:none;padding:0;margin:8px 0 0}
 .toc-mobile a{display:block;padding:6px 4px;text-decoration:none;color:var(--ink)}
 .toc-mobile .l3 a{padding-left:18px;color:var(--quiet);font-size:14px}
 .card{padding:6px 16px 16px}
 h1{font-size:24px}
}