:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  line-height: 1.65;
  --accent: #23824d;
  --background: #f7f7f2;
  --surface: #ffffff;
  --text: #172019;
  --muted: #626b64;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--background); color: var(--text); }
main { width: min(720px, calc(100% - 40px)); margin: 0 auto; padding: 64px 0 96px; }
header { margin-bottom: 44px; }
h1 { margin: 8px 0 12px; font-size: clamp(2rem, 7vw, 3.5rem); line-height: 1.12; }
h2 { margin-top: 40px; font-size: 1.2rem; }
p, li { color: var(--muted); }
a { color: var(--accent); }
.brand { color: var(--accent); font-weight: 700; }
.card { background: var(--surface); border-radius: 24px; padding: 24px; margin-top: 20px; }
.notice { border-left: 4px solid var(--accent); padding-left: 16px; }
footer { margin-top: 56px; font-size: .9rem; color: var(--muted); }

@media (prefers-color-scheme: dark) {
  :root { --background: #0b120e; --surface: #171c18; --text: #f4f6f4; --muted: #b5bcb7; --accent: #52c77c; }
}