:root {
  --bg: #FBFAF6;
  --surface: #FFFFFF;
  --border: #E8E4DA;
  --text: #1A1815;
  --text-muted: #625E56;
  --text-faint: #8F8B82;
  --accent: #01696F;
  --accent-hover: #024F54;
  --warn-bg: #FEF3C7;
  --warn-border: #FDE68A;
  --warn-text: #78350F;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Nav --- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 250, 246, 0.85);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 0;
}
.nav-brand {
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 20px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-brand:hover { color: var(--accent); }

.nav-links {
  display: flex; gap: 20px; align-items: center;
  font-size: 14px;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
}
.nav-links a:hover { color: var(--accent); }

/* --- Main --- */
main { padding: 48px 0 80px; }

h1 {
  font-family: 'Manrope', sans-serif;
  font-size: 40px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 8px 0;
  color: var(--text);
}
.effective-date {
  color: var(--text-muted);
  font-size: 15px;
  margin: 0 0 40px 0;
}

h2 {
  font-family: 'Manrope', sans-serif;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 48px 0 16px 0;
  color: var(--text);
}
h3 {
  font-family: 'Manrope', sans-serif;
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 12px 0;
  color: var(--text);
}
p { margin: 0 0 16px 0; color: var(--text); }
ul, ol { margin: 0 0 16px 0; padding-left: 24px; }
li { margin-bottom: 8px; }

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

code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.9em;
}

a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }

.divider {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 64px 0 48px 0;
}

.lang-switch {
  display: inline-flex; gap: 12px;
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-muted);
}
.lang-switch a { color: var(--text-muted); text-decoration: none; }
.lang-switch .active { color: var(--text); font-weight: 600; text-decoration: none; }

/* --- Callout / warning box --- */
.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 0 0 24px 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout.warn {
  background: var(--warn-bg);
  border-color: var(--warn-border);
  color: var(--warn-text);
}
.callout.warn strong, .callout.warn p { color: var(--warn-text); }

/* --- Tables (pricing / plans) --- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 24px 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-size: 15px;
}
th, td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
th {
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  background: rgba(1, 105, 111, 0.06);
  color: var(--text);
}
tr:last-child td { border-bottom: none; }

/* --- Table of contents --- */
.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 0 0 40px 0;
}
.toc p { margin: 0 0 8px 0; font-weight: 600; font-family: 'Manrope', sans-serif; }
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin-bottom: 6px; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  color: var(--text-faint);
  font-size: 14px;
  margin-top: 40px;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
}
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer a { color: var(--text-muted); text-decoration: none; }
.footer a:hover { color: var(--text); }

@media (max-width: 640px) {
  h1 { font-size: 32px; }
  h2 { font-size: 20px; margin-top: 40px; }
  main { padding: 32px 0 60px; }
  table { font-size: 13px; }
  th, td { padding: 10px 10px; }
}