:root {
  --bg: #ffffff;
  --surface: #f7f7f8;
  --border: #e3e3e7;
  --text: #1a1a1e;
  --muted: #5c5c66;
  --accent: #2f5bd7;
  --accent-soft: #eef2fd;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131316;
    --surface: #1c1c21;
    --border: #2e2e36;
    --text: #e8e8ec;
    --muted: #a0a0ad;
    --accent: #8aa6f5;
    --accent-soft: #1e2334;
  }
}

:root[data-theme="dark"] {
  --bg: #131316;
  --surface: #1c1c21;
  --border: #2e2e36;
  --text: #e8e8ec;
  --muted: #a0a0ad;
  --accent: #8aa6f5;
  --accent-soft: #1e2334;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px 72px;
}

header.site {
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
  padding: 40px 0 28px;
}

.brand {
  font-size: 1.55rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 0;
}

.brand a { color: inherit; text-decoration: none; }

.tagline {
  color: var(--muted);
  margin: 8px 0 0;
}

h1 {
  font-size: 1.85rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

h2 {
  font-size: 1.2rem;
  letter-spacing: -0.01em;
  margin: 40px 0 12px;
  padding-top: 4px;
}

h3 {
  font-size: 1.02rem;
  margin: 28px 0 8px;
}

p, ul, ol, table { margin: 0 0 16px; }

ul, ol { padding-left: 22px; }

li { margin-bottom: 6px; }

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

a:hover { text-decoration: none; }

.meta {
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 32px;
}

.meta strong { color: var(--text); font-weight: 600; }

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 12px;
  text-decoration: none;
  color: inherit;
}

.card h3 { margin: 0 0 4px; font-size: 1.05rem; }

.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.card .policy-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--accent);
}

.callout {
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  margin: 0 0 20px;
}

.callout p:last-child { margin-bottom: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
}

th, td {
  text-align: left;
  padding: 9px 12px;
  border: 1px solid var(--border);
  vertical-align: top;
}

th { background: var(--surface); font-weight: 600; }

code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 5px;
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

footer.site {
  border-top: 1px solid var(--border);
  margin-top: 56px;
  padding-top: 24px;
  color: var(--muted);
  font-size: 0.92rem;
}

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

.back {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 0.93rem;
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  h1 { font-size: 1.55rem; }
  header.site { padding: 28px 0 22px; margin-bottom: 30px; }
  th, td { padding: 8px 9px; }
}