:root {
  --bg: #f6f6f4;
  --surface: #ffffff;
  --text: #1b1b1a;
  --muted: #5d5d59;
  --border: #e3e3df;
  --accent: #2563eb;
  --on-accent: #ffffff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --surface: #1c1c1c;
    --text: #ececea;
    --muted: #a9a9a4;
    --border: #2d2d2d;
    --accent: #6f95f0;
    --on-accent: #111111;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, 'Segoe UI', 'Noto Sans KR', sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 64px; }
header { padding-bottom: 8px; }
header img { border-radius: 12px; display: block; margin-bottom: 16px; }
h1 { font-family: Georgia, 'Times New Roman', serif; font-size: 40px; line-height: 1.15; margin: 0 0 8px; }
h2 { font-size: 18px; margin: 36px 0 8px; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 20px; }
.muted { color: var(--muted); margin-top: 0; }
a { color: var(--accent); }
ul { padding-left: 20px; }
li + li { margin-top: 6px; }
code { font-size: 14px; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; overflow-wrap: anywhere; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
.button {
  display: inline-block; padding: 9px 16px; border-radius: 5px; text-decoration: none;
  border: 1px solid var(--border); background: var(--surface); color: var(--text); font-weight: 500;
}
.button.primary { background: var(--accent); border-color: transparent; color: var(--on-accent); }
.back { margin: 0 0 24px; }
section { border-top: 1px solid var(--border); margin-top: 32px; }
footer { border-top: 1px solid var(--border); margin-top: 40px; color: var(--muted); font-size: 14px; }