:root {
  color-scheme: light dark;
  --accent: #1A6B5A;
  --accent-link: #1F8070;
  --accent-tint: #F1F8F6;
  --bg: #FFFFFF;
  --card: #F7FAF9;
  --text: #1C1C1C;
  --muted: #5F6B69;
  --line: #E4EAE8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --accent: #5CC7AE;
    --accent-link: #5CC7AE;
    --accent-tint: #16211E;
    --bg: #0F1214;
    --card: #171D1F;
    --text: #EEF3F2;
    --muted: #9AA8A5;
    --line: #26302E;
  }
}
* { 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, "Segoe UI", Roboto, system-ui, sans-serif;
}
a { color: var(--accent-link); }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px; }

header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 64px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--accent); text-decoration: none; font-weight: 800; font-size: 24px; letter-spacing: -0.5px; }
.brand svg { width: 30px; height: 30px; }
nav.site { display: flex; gap: 16px; font-size: 15px; }
nav.site a { color: var(--muted); text-decoration: none; }
nav.site a:hover, nav.site a[aria-current] { color: var(--text); }

main { padding: 40px 0 64px; }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.5px; margin: 0 0 12px; }
h2 { font-size: 22px; line-height: 1.3; margin: 40px 0 8px; }
p, li { color: var(--muted); }
p strong, li strong { color: var(--text); }
ul { padding-left: 22px; }
li { margin: 6px 0; }
.lead { font-size: 20px; color: var(--muted); margin: 0 0 28px; }

.hero { text-align: center; padding: 24px 0 8px; }
.hero svg { width: 88px; height: 88px; margin-bottom: 16px; color: var(--accent); }
.hero h1 { font-size: 40px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin: 32px 0; }
.card { background: var(--card); border-radius: 16px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; font-size: 15px; line-height: 1.5; }
.note { background: var(--accent-tint); border-radius: 16px; padding: 20px; }
.note p { margin: 0; }
.note p + p { margin-top: 8px; }

footer.site { border-top: 1px solid var(--line); padding: 24px 0 40px; font-size: 14px; color: var(--muted); }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 8px 16px; }
footer.site a { color: var(--muted); }

@media (max-width: 520px) {
  nav.site { display: none; }
  h1, .hero h1 { font-size: 30px; }
  .lead { font-size: 18px; }
}