:root {
  --bg: #071a38;
  --bg-2: #0d2b57;
  --panel: #0f2f5e;
  --line: #2a4f86;
  --text: #e9f1ff;
  --muted: #a9bedb;
  --gold: #ffc861;
  --gold-2: #ff9a3d;
  --link: #8fd3ff;
  color-scheme: dark;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(120% 70% at 50% -10%, #1f6fb8 0%, var(--bg-2) 35%, var(--bg) 70%) fixed;
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "PingFang TC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

a { color: var(--link); text-underline-offset: 3px; }
a:hover { color: #c3e8ff; }

.wrap { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }

header.top { text-align: center; padding: 8px 0 20px; }
header.top img { width: min(320px, 78%); height: auto; display: inline-block; }
header.top .kicker {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

nav.pages, nav.langs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}
nav.pages a, nav.langs a {
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #0b2550cc;
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
}
nav.pages a[aria-current="page"] {
  border-color: var(--gold);
  background: linear-gradient(180deg, var(--gold), var(--gold-2));
  color: #1b1405;
  font-weight: 700;
}
nav.langs { margin-bottom: 28px; }
nav.langs a { font-size: 13px; padding: 5px 12px; color: var(--muted); }

section.lang {
  margin: 0 0 28px;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  border-radius: 16px;
  background: linear-gradient(180deg, #123668e6, #0c2a55e6);
  box-shadow: 0 18px 40px #0007;
  scroll-margin-top: 16px;
}

h1 { margin: 0 0 4px; font-size: 26px; line-height: 1.25; }
h2 { margin: 26px 0 8px; font-size: 18px; color: var(--gold); }
p, ul { margin: 0 0 12px; }
ul { padding-left: 1.25em; }
li { margin: 4px 0; }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.callout {
  margin: 14px 0;
  padding: 12px 14px;
  border-left: 3px solid var(--gold);
  border-radius: 8px;
  background: #0a2246;
}
.mail { font-size: 18px; font-weight: 700; }

footer {
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  margin-top: 36px;
}

@media (max-width: 420px) {
  section.lang { padding: 20px 16px; }
  h1 { font-size: 23px; }
}