:root { --bg:#f7f8fb; --surface:#fff; --text:#12141c; --muted:#5b6070; --accent:#5d47e3; --line:#e2e4ec; }
@media (prefers-color-scheme: dark) { :root { --bg:#0b0c14; --surface:#161824; --text:#f2f3f7; --muted:#a0a6b8; --accent:#8b78ff; --line:#262a3a; } }
* { box-sizing:border-box; }
body { margin:0; background:var(--bg); color:var(--text); font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif; }
.wrap { max-width:760px; margin:0 auto; padding:48px 20px 80px; }
header { display:flex; align-items:center; gap:14px; margin-bottom:8px; }
.logo { width:52px; height:52px; border-radius:13px; background:linear-gradient(135deg,#7b68ef,#05a99c); display:flex; align-items:center; justify-content:center; color:#fff; font-weight:700; font-size:22px; }
h1 { font-size:30px; margin:22px 0 6px; letter-spacing:-.4px; }
h2 { font-size:20px; margin:34px 0 10px; letter-spacing:-.2px; }
p, li { color:var(--text); }
.muted { color:var(--muted); font-size:14px; }
a { color:var(--accent); }
.card { background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:20px 22px; margin:18px 0; }
ul { padding-left:20px; }
footer { margin-top:52px; padding-top:20px; border-top:1px solid var(--line); color:var(--muted); font-size:14px; }
.nav { display:flex; gap:16px; margin:10px 0 0; font-size:14px; }
h3 { font-size:17px; margin:26px 0 4px; letter-spacing:-.1px; }
.btn { display:inline-block; background:linear-gradient(135deg,#7b68ef,#05a99c); color:#fff; text-decoration:none; font-weight:600; padding:14px 28px; border-radius:12px; }
.logo { flex:0 0 auto; }