:root {
  color-scheme: light dark;
  --bg: #f1f5f9;
  --card-bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --brand: #0d6efd;
  --border: #e2e8f0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card-bg: #1e293b;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --brand: #4d94ff;
    --border: #334155;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  display: flex;
  justify-content: center;
  padding: 24px 16px 64px;
}

main { width: 100%; max-width: 680px; }

.topbar { display: flex; justify-content: flex-end; padding: 8px 4px 16px; }
.lang-switch a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; }
.lang-switch a:hover { color: var(--brand); }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  margin-bottom: 24px;
}

h1 { font-size: 28px; margin: 0 0 12px; }
h2 { font-size: 18px; margin: 24px 0 8px; }
h2:first-child { margin-top: 0; }
p { color: var(--muted); margin: 0 0 12px; }
ul { color: var(--muted); margin: 0 0 12px; padding-left: 20px; }
li { margin-bottom: 6px; }
a { color: var(--brand); }

.links { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }
.badges { display: flex; gap: 12px; flex-wrap: wrap; margin: 20px 0; }

.badge {
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 16px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

.badge[hidden] { display: none; }

footer { color: var(--muted); font-size: 13px; text-align: center; margin-top: 16px; }