:root {
  color-scheme: light;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --accent: #16a34a;
  --accent-soft: #f0fdf4;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); line-height: 1.65; }
main { width: min(860px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 32px; }
h1 { margin: 0 0 8px; font-size: 32px; line-height: 1.2; }
h2 { margin-top: 32px; font-size: 22px; }
h3 { margin-top: 22px; font-size: 18px; }
p, li { color: var(--muted); }
strong { color: var(--text); }
a { color: var(--accent); font-weight: 600; text-decoration: none; }
a:hover { text-decoration: underline; }
nav, .language-switcher { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 0; }
.language-switcher { margin: 0 0 20px; justify-content: flex-end; }
nav a, .button, .language-switcher a { display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--border); border-radius: 999px; padding: 10px 14px; background: #ffffff; }
.footer { margin-top: 28px; font-size: 14px; color: var(--muted); }
.notice { border-left: 4px solid var(--accent); padding: 12px 16px; background: var(--accent-soft); border-radius: 12px; }
@media (max-width: 640px) { main { padding: 28px 0; } .card { padding: 22px; border-radius: 14px; } h1 { font-size: 26px; } .language-switcher { justify-content: flex-start; } }