:root {
  --bg: #f6f3f8;
  --card: #ffffff;
  --ink: #1d1420;
  --muted: #6b5f70;
  --accent: #c23a6b;
  --line: #e6dfe9;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #160c1b;
    --card: #22142a;
    --ink: #f3ecf5;
    --muted: #b6a8bc;
    --accent: #ff7aa2;
    --line: #3a2843;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
header img { width: 64px; height: 64px; border-radius: 15px; }
header h1 { margin: 0; font-size: 28px; }
header p { margin: 2px 0 0; color: var(--muted); }
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
a { color: var(--accent); }
section { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 4px 20px 16px; margin-bottom: 20px; }
h2 { font-size: 21px; margin: 18px 0 8px; }
h3 { font-size: 17px; margin: 16px 0 4px; }
ul { padding-left: 20px; }
.muted { color: var(--muted); font-size: 15px; }
footer { color: var(--muted); font-size: 14px; text-align: center; margin-top: 32px; }