:root {
  --bg: #f2f8f6;
  --card: #ffffff;
  --ink: #1f3552;
  --muted: #6f8599;
  --accent: #12b3b0;
  --coral: #ff7a5c;
  --line: #dcebe8;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
header.site { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header.site a { color: var(--ink); text-decoration: none; font-weight: 700; font-size: 20px; }
.dot { width: 28px; height: 28px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #ffe68c, #f2c35b 60%, #d48a1c); box-shadow: 0 3px 0 var(--accent); flex: none; }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 6px; }
h2 { font-size: 21px; margin: 32px 0 8px; }
h3 { font-size: 18px; margin: 20px 0 6px; }
.muted { color: var(--muted); font-size: 15px; }
a { color: #0b8e93; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; margin: 16px 0; }
.lang { display: flex; gap: 12px; font-size: 15px; margin: 8px 0 24px; }
ol, ul { padding-left: 22px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
footer { margin-top: 48px; font-size: 14px; color: var(--muted); }
footer a { margin-right: 14px; }
a { overflow-wrap: anywhere; }
@media (max-width: 480px) {
  body { font-size: 16px; }
  main { padding: 24px 16px 48px; }
  h1 { font-size: 26px; }
}