:root {
  color-scheme: light dark;
  --bg: #0b0d10;
  --panel: #151922;
  --text: #f5f7fa;
  --muted: #aeb7c4;
  --line: #2a3140;
  --accent: #7dd3fc;
}
* { box-sizing: border-box; }
html { font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.65; }
main { width: min(900px, calc(100% - 36px)); margin: 0 auto; padding: 64px 0 80px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 32px; }
h1, h2 { line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); margin: 0 0 16px; }
h2 { margin-top: 32px; font-size: 1.35rem; }
p, li { color: var(--muted); }
a { color: var(--accent); }
nav { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 28px; }
footer { margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line); font-size: .95rem; color: var(--muted); }
.badge { display: inline-block; border: 1px solid var(--line); border-radius: 999px; padding: 6px 11px; margin-bottom: 18px; color: var(--muted); font-size: .9rem; }
@media (prefers-color-scheme: light) {
  :root { --bg: #f5f7fb; --panel: #ffffff; --text: #111827; --muted: #4b5563; --line: #dbe1ea; --accent: #0369a1; }
}