:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5a5a5a;
  --accent: #ff9900;
  --border: #e5e5e5;
  --card: #f7f7f8;
  --max-width: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #f0f0f0;
    --muted: #a8a8a8;
    --accent: #ffb84d;
    --border: #2c2c2c;
    --card: #1c1c1e;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 20px 80px;
}

header.top {
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

header.top .brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--fg);
  font-size: 16px;
}

header.top nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  margin-left: 16px;
}

header.top nav a:hover { color: var(--accent); }

h1 {
  font-size: 28px;
  margin-bottom: 4px;
}

h2 {
  font-size: 20px;
  margin-top: 40px;
  margin-bottom: 12px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

h2:first-of-type { border-top: none; padding-top: 0; }

h3 {
  font-size: 16px;
  margin-top: 24px;
  margin-bottom: 8px;
}

p, li { color: var(--fg); }

.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 32px;
}

.lang-switch {
  font-size: 14px;
}

.lang-switch a {
  color: var(--muted);
  text-decoration: none;
}

.lang-switch a.active {
  color: var(--fg);
  font-weight: 600;
}

.tldr {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 15px;
}

.tldr strong { display: block; margin-bottom: 6px; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th { color: var(--muted); font-weight: 600; }

a { color: var(--accent); }

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}

@media (min-width: 480px) {
  .card-grid { grid-template-columns: 1fr 1fr; }
}

.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  text-decoration: none;
  color: var(--fg);
}

.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

.disclaimer {
  margin-top: 48px;
  padding: 16px 20px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}

footer.bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 60px;
  color: var(--muted);
  font-size: 13px;
}

footer.bottom a { color: var(--muted); }