:root {
  color-scheme: light dark;
  --bg: #101418;
  --card: #182027;
  --text: #f2f5f7;
  --muted: #b9c4cc;
  --accent: #78d8b3;
  --line: #30404b;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.7 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
main { width: min(760px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0 48px; }
h1 { font-size: clamp(2rem, 6vw, 3.25rem); line-height: 1.15; margin: 0 0 16px; }
h2 { margin-top: 40px; font-size: 1.35rem; }
p, li { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; margin: 24px 0; }
.tag { color: var(--accent); font-weight: 700; letter-spacing: .03em; }
a { color: var(--accent); }
nav, footer { display: flex; flex-wrap: wrap; gap: 16px; }
nav { margin-bottom: 48px; }
footer { border-top: 1px solid var(--line); margin-top: 56px; padding-top: 20px; font-size: .9rem; }