:root{--ink:#12172a;--muted:#5a6382;--line:#e3e7f2;--brand:#135AA5;--teal:#089694;--bg:#f6f8fc;--card:#fff}
@media (prefers-color-scheme:dark){:root{--ink:#eef1f8;--muted:#a6aec5;--line:#262d3f;--brand:#7CA0FF;--teal:#3CD9A4;--bg:#0b0d14;--card:#151a25}}
*{box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;max-width:760px;margin:0 auto;padding:32px 20px 64px;line-height:1.6;color:var(--ink);background:var(--bg)}
header{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.mark{width:52px;height:52px;border-radius:12px;flex:0 0 auto;background:linear-gradient(135deg,#0d2a68,#1458a2 50%,#099896)}
h1{font-size:1.6rem;margin:.2em 0}
h2{font-size:1.15rem;margin-top:2em;border-bottom:1px solid var(--line);padding-bottom:.3em}
h3{font-size:1rem;margin-top:1.6em}
a{color:var(--brand)}
.card{border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:18px 0;background:var(--card)}
.muted{color:var(--muted);font-size:.92rem}
nav ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:10px}
nav a{display:inline-block;border:1px solid var(--line);background:var(--card);border-radius:999px;padding:7px 14px;text-decoration:none;font-size:.92rem}
table{border-collapse:collapse;width:100%;margin:12px 0;font-size:.94rem}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:rgba(19,90,165,.08)}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);font-size:.86rem;color:var(--muted)}
code{background:rgba(127,127,127,.14);padding:1px 5px;border-radius:5px;font-size:.9em}