/* Language chooser at the site root (static, no inline styles: CSP-safe). */
html { color-scheme: dark; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #0a0d10;
  color: #e9edf1;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial,
    "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
main { max-width: 640px; padding: 32px 24px; }
h1 { font-size: 1.4rem; margin: 0 0 8px; letter-spacing: -0.01em; }
p { color: #a3aeba; margin: 0 0 24px; }
ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; }
a {
  display: block;
  padding: 10px 14px;
  border: 1px solid #2e3a47;
  border-radius: 9px;
  color: #e9edf1;
  text-decoration: none;
}
a:hover, a:focus-visible { border-color: #c8a35a; color: #c8a35a; }