:root {
  --bg: #f7f5ef;
  --surface: #ffffff;
  --text: #1c2422;
  --muted: #5b6763;
  --accent: #137f86;
  --accent-soft: #e1f1ee;
  --line: #e4e0d5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101615;
    --surface: #18201f;
    --text: #e9efed;
    --muted: #9aa8a4;
    --accent: #5cc0b5;
    --accent-soft: #1d2f2d;
    --line: #2a3533;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
}
main { max-width: 640px; margin: 0 auto; padding: 56px 20px 40px; }
a { color: var(--accent); }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.brand img { width: 44px; height: 44px; border-radius: 10px; }
.brand span { font-weight: 700; font-size: 20px; letter-spacing: -0.01em; }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 40px 0 12px; }
.lede { color: var(--muted); font-size: 19px; margin: 0 0 28px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; margin: 16px 0; }
.card h2 { font-size: 17px; margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); }
.pill { display: inline-block; background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 4px 12px; font-size: 14px; font-weight: 600; }
footer { max-width: 640px; margin: 0 auto; padding: 24px 20px 48px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }
footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-bottom: 8px; }