:root {
  --rb-canvas: #f5f2ea;
  --rb-surface: #fffdf7;
  --rb-ink: #101216;
  --rb-action: #0f4c75;
  --rb-cyan: #20b7ea;
  --rb-teal: #79a9ad;
  --rb-secondary: #5e625f;
  --rb-line: #d8d6ce;
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--rb-canvas); }

body {
  min-width: 320px;
  margin: 0;
  color: var(--rb-ink);
  background:
    linear-gradient(150deg, rgb(32 183 234 / 12%), transparent 32rem),
    var(--rb-canvas);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

main {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0;
}

header { margin-bottom: 28px; }

.eyebrow {
  color: var(--rb-action);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 8px 0 10px;
  color: var(--rb-ink);
  font-size: clamp(38px, 7vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.035em;
}

h2 {
  margin: 36px 0 12px;
  color: var(--rb-ink);
  font-size: 25px;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

p,
li {
  color: var(--rb-secondary);
  font-size: 17px;
}

p { margin: 0 0 16px; }

a {
  color: var(--rb-action);
  text-underline-offset: 0.16em;
}

a:hover { color: #083c5e; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--rb-action);
  outline-offset: 3px;
}

.card {
  padding: 26px;
  background: var(--rb-surface);
  border: 1px solid var(--rb-line);
  border-radius: 18px;
}

.card p:last-child,
.section p:last-child { margin-bottom: 0; }

.section {
  margin-top: 34px;
  padding-top: 8px;
  border-top: 1px solid var(--rb-line);
}

.updated {
  margin: 0;
  color: var(--rb-secondary);
}

.language-switcher {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-bottom: 22px;
}

.language-switcher button {
  min-width: 44px;
  min-height: 44px;
  padding: 0 14px;
  color: var(--rb-action);
  background: var(--rb-surface);
  border: 1px solid var(--rb-line);
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.language-switcher button:hover,
.language-switcher button[aria-pressed="true"] {
  color: var(--rb-surface);
  background: var(--rb-action);
  border-color: var(--rb-action);
}

.policy-lang[hidden] { display: none; }

@media (max-width: 520px) {
  main {
    width: min(100% - 28px, 880px);
    padding: 28px 0 44px;
  }

  .language-switcher { margin-bottom: 28px; }
  .card { padding: 22px; }
  h2 { font-size: 23px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}