:root {
  --bg: #f4f5f2;
  --card: #ffffff;
  --text: #1c1f1d;
  --muted: #5d655f;
  --accent: #16804a;
  --line: #e2e5e0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1210;
    --card: #181c19;
    --text: #eef1ee;
    --muted: #a3aca5;
    --accent: #26b366;
    --line: #2a302b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 ui-rounded, -apple-system, BlinkMacSystemFont, "SF Pro Rounded", "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
header.brand img { width: 44px; height: 44px; border-radius: 10px; }
header.brand a { color: var(--text); text-decoration: none; font-weight: 700; font-size: 20px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 4px 20px 12px; margin: 16px 0; }
.lang { display: flex; gap: 12px; margin: 8px 0 24px; font-size: 15px; }
.summary li { margin: 8px 0; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.hero { text-align: center; padding: 48px 0 16px; }
.hero img { width: 96px; height: 96px; border-radius: 22px; box-shadow: 0 6px 20px rgba(0,0,0,.15); }
.hero h1 { font-size: 36px; margin-top: 20px; }
.hero p { font-size: 19px; color: var(--muted); margin: 0 auto; max-width: 480px; }
nav.links { display: flex; justify-content: center; gap: 20px; margin-top: 28px; }