:root { --ink:#1c1b22; --muted:#6a6878; --line:#e4e2ec; --soft:#f6f5fa; --brand:#5509F8; }
* { box-sizing: border-box; }
body { margin:0; font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color:var(--ink); line-height:1.6; background:#fff; }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }
header { border-bottom: 1px solid var(--line); }
header .wrap { display:flex; align-items:center; justify-content:space-between; height:60px; }
.logo { display:flex; align-items:center; gap:10px; font-weight:700; color:var(--ink); text-decoration:none; }
.logo i { width:12px; height:12px; border-radius:3px; background:var(--brand); display:inline-block; }
nav a { color:var(--muted); text-decoration:none; margin-left:18px; font-size:14px; }
nav a:hover { color:var(--brand); }
h1 { font-size: 34px; line-height:1.2; margin: 48px 0 12px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
p, li { color:#33313d; }
.lead { font-size:18px; color:var(--muted); }
.btn { display:inline-block; margin-top:12px; padding:12px 20px; background:var(--brand); color:#fff; border-radius:6px; text-decoration:none; font-weight:600; }
.btn:hover { background:#4407c9; }
ul { padding-left: 20px; }
.card { background:var(--soft); border:1px solid var(--line); border-radius:8px; padding:16px 20px; margin:20px 0; }
footer { border-top:1px solid var(--line); margin-top:64px; padding:24px 0; color:var(--muted); font-size:14px; }
footer a { color:var(--muted); }
a { color: var(--brand); }