:root { --bg:#fff; --fg:#17121c; --muted:#5f5868; --card:#f5f2f7; --line:#e7e2ec; --brand:#e8692a; }
@media (prefers-color-scheme: dark) { :root { --bg:#0d0910; --fg:#f4f0f7; --muted:#a69cb0; --card:#1a1420; --line:#2a2231; --brand:#ff8c42; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 64px; }
header { display:flex; align-items:center; gap:14px; margin-bottom: 28px; }
header img { width:64px; height:64px; border-radius:15px; }
header h1 { margin:0; font-size: 28px; line-height:1.2; }
header p { margin:2px 0 0; color: var(--muted); font-size: 15px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); font-size: 15px; }
.card { background: var(--card); border:1px solid var(--line); border-radius: 16px; padding: 18px 20px; margin: 16px 0; }
a { color: var(--brand); }
details { border-bottom: 1px solid var(--line); padding: 14px 0; }
summary { cursor: pointer; font-weight: 600; }
nav { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 15px; color: var(--muted); }
.btn { display:inline-block; background: linear-gradient(90deg,#ff8c42,#ff3d7f); color:#fff; text-decoration:none; font-weight:600; padding: 12px 22px; border-radius: 999px; }