:root {
  --navy: #0B2160;
  --blue-light: #1A8CFF;
  --blue-deep: #0052F5;
  --bg: #F7FBFF;
  --panel: #EEF7FE;
  --text: #10193B;
  --muted: #4A5A82;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, var(--bg) 0%, #E9F2FF 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}
.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}
.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--blue-deep);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 28px;
}
.top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}
.top-row .back {
  margin-bottom: 0;
}
.lang-switch {
  display: flex;
  gap: 4px;
  font-size: 0.82rem;
}
.lang-switch a, .lang-switch span {
  padding: 4px 9px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}
.lang-switch a:hover {
  background: var(--panel);
}
.lang-switch span.current {
  background: var(--navy);
  color: #fff;
}
header.doc-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}
header.doc-header img {
  height: 36px;
}
header.doc-header span {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
}
h1 {
  font-size: 1.7rem;
  color: var(--navy);
  margin: 24px 0 4px;
}
.updated {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 32px;
}
h2 {
  font-size: 1.15rem;
  color: var(--navy);
  margin: 36px 0 10px;
}
p, li {
  color: var(--text);
  font-size: 0.98rem;
}
ul {
  padding-left: 22px;
}
li {
  margin-bottom: 6px;
}
a {
  color: var(--blue-deep);
}
.card {
  background: var(--panel);
  border-radius: 16px;
  padding: 20px 22px;
  margin: 20px 0;
  font-size: 0.92rem;
  color: var(--muted);
}
footer {
  text-align: center;
  margin-top: 56px;
  color: var(--muted);
  font-size: 0.85rem;
}
footer a { color: var(--blue-deep); }