:root{--bg:#fff;--fg:#14181f;--muted:#5b6573;--line:#e3e7ed;--accent:#0f766e;--card:#f6f8fa}
@media(prefers-color-scheme:dark){:root{--bg:#0f1419;--fg:#e8ecf1;--muted:#98a3b3;--line:#232c37;--accent:#2dd4bf;--card:#161d25}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;justify-content:space-between;align-items:center;height:56px}
header a{color:var(--fg);text-decoration:none;font-weight:600}
header nav a{font-weight:400;color:var(--muted);margin-left:16px}
h1{font-size:2rem;line-height:1.2;margin:48px 0 12px}
h2{font-size:1.25rem;margin:36px 0 8px}
p,li{color:var(--fg)}
.lead{font-size:1.1rem;color:var(--muted);margin:0 0 24px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:10px 18px;border-radius:8px;text-decoration:none;font-weight:600}
@media(prefers-color-scheme:dark){.btn{color:#0f1419}}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:16px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.card b{display:block;margin-bottom:4px}
table{border-collapse:collapse;width:100%;font-size:.95rem;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
a{color:var(--accent)}
footer{border-top:1px solid var(--line);margin-top:56px;padding:20px 0;color:var(--muted);font-size:.9rem}
details{margin:8px 0}summary{cursor:pointer;font-weight:600}