:root {
  --bg: #0e0f14;
  --surface: #171922;
  --text: #f2f3f7;
  --muted: #a9aeb8;
  --accent: #c6f432;
  --on-accent: #151a04;
  --line: #2e3140;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f5f7;
    --surface: #ffffff;
    --text: #0e0f14;
    --muted: #555b6c;
    --accent: #c6f432;
    --on-accent: #151a04;
    --line: #d8dbe2;
  }
  a { color: #4a6400; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
main { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
header img { width: 56px; height: 56px; border-radius: 16px; }
header a { color: var(--text); text-decoration: none; font-weight: 800; font-size: 22px; letter-spacing: -0.3px; }
nav { margin-left: auto; display: flex; gap: 16px; font-weight: 700; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
h1 { font-size: clamp(30px, 6vw, 46px); line-height: 1.1; letter-spacing: -1px; margin: 8px 0 12px; }
h2 { font-size: 21px; margin: 32px 0 8px; letter-spacing: -0.3px; }
p, li { color: var(--muted); }
strong { color: var(--text); }
.lead { font-size: 19px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 22px; padding: 18px 20px; margin: 16px 0; }
.btn { display: inline-block; background: var(--accent); color: var(--on-accent); font-weight: 800; padding: 13px 22px; border-radius: 999px; text-decoration: none; }
footer { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }