:root{--bg:#ffffff;--fg:#0E1B33;--muted:#54617A;--accent:#1F4FD8;--card:#F3F6FC;--line:#D9E1F2}
@media (prefers-color-scheme:dark){:root{--bg:#0B1220;--fg:#F2F6FF;--muted:#A3B0C9;--accent:#6C93FF;--card:#16203A;--line:#2A3654}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:780px;margin:0 auto;padding:32px 20px 80px}
header{display:flex;align-items:center;gap:14px;padding:26px 0 8px;border-bottom:1px solid var(--line);margin-bottom:28px}
.mark{width:48px;height:48px;border-radius:13px;background:linear-gradient(160deg,#4B83FF,#102C8C);display:grid;place-items:center;flex:0 0 auto}
.mark svg{width:30px;height:30px}
h1{font-size:1.6rem;margin:0}
h2{font-size:1.15rem;margin:34px 0 10px}
h3{font-size:1rem;margin:22px 0 6px}
p,li{color:var(--fg)}
.muted{color:var(--muted)}
a{color:var(--accent)}
nav{margin-bottom:22px}
nav a{margin-right:16px;font-weight:600;text-decoration:none}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:18px 0}
ul{padding-left:20px}
footer{margin-top:56px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
table{width:100%;border-collapse:collapse;margin:14px 0}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);font-size:.94rem;vertical-align:top}