:root {
  --bg: #f4f5f9;
  --card: #ffffff;
  --text: #1c1c1e;
  --muted: #5c5f6a;
  --accent: #2b59c3;
  --accent2: #6a3fc0;
  --line: #e3e5ec;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1016;
    --card: #1a1d26;
    --text: #f2f3f7;
    --muted: #a3a8b8;
    --accent: #8fb0ff;
    --accent2: #b79bff;
    --line: #2a2e3a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
header {
  background: linear-gradient(135deg, #2b59c3, #6a3fc0);
  color: #fff;
  padding: 48px 16px 40px;
  text-align: center;
}
header img { width: 88px; height: 88px; border-radius: 20px; box-shadow: 0 8px 24px rgba(0,0,0,.25); }
header h1 { margin: 16px 0 6px; font-size: 30px; line-height: 1.2; }
header p { margin: 0 auto; max-width: 560px; opacity: .9; }
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  margin: 0 0 16px;
}
h2 { font-size: 20px; margin: 0 0 10px; }
h3 { font-size: 17px; margin: 18px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 15px; }
ul { padding-left: 20px; margin: 8px 0; }
a { color: var(--accent); }
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: #fff;
  background: linear-gradient(135deg, #2b59c3, #6a3fc0);
  border-radius: 999px;
  padding: 2px 10px;
  vertical-align: middle;
}
footer { text-align: center; color: var(--muted); font-size: 14px; padding: 8px 16px 32px; }
nav { text-align: center; margin: 14px 0 0; }
nav a { color: #fff; font-weight: 600; margin: 0 10px; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.5); }