:root {
  color-scheme: light dark;
  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #5d687b;
  --line: #dfe5ee;
  --accent: #1769e0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1119;
    --card: #151b26;
    --text: #f2f5fa;
    --muted: #aeb8c8;
    --line: #2b3443;
    --accent: #78aaf8;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
main { width: min(760px, calc(100% - 32px)); margin: 48px auto; }
article { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: clamp(24px, 5vw, 52px); }
h1 { margin: 0 0 8px; font-size: clamp(2rem, 6vw, 3rem); line-height: 1.1; }
h2 { margin-top: 2rem; font-size: 1.25rem; line-height: 1.3; }
p, li { color: var(--muted); }
a { color: var(--accent); }
.eyebrow { color: var(--accent); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.meta { margin: 0 0 2rem; }
nav { display: flex; flex-wrap: wrap; gap: 16px; margin: 24px 0 0; }
nav a { font-weight: 600; }
.button { display: inline-block; padding: 11px 16px; border-radius: 10px; background: var(--accent); color: white; font-weight: 700; text-decoration: none; }
footer { margin: 24px 0; color: var(--muted); text-align: center; font-size: .9rem; }