:root {
  --ink: #0F172A;
  --sub: #475569;
  --muted: #94A3B8;
  --primary: #6366F1;
  --primary2: #8B5CF6;
  --teal: #0D9488;
  --line: #E2E8F0;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --primary-soft: #EEF2FF;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #F1F5F9;
    --sub: #A6B4C8;
    --muted: #64748B;
    --primary: #818CF8;
    --primary2: #A78BFA;
    --teal: #2DD4BF;
    --line: #243044;
    --bg: #0B1220;
    --card: #141E32;
    --primary-soft: #232C4A;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  text-decoration: none;
}

.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 800; font-size: 18px;
}

.brand-name {
  font-weight: 800; font-size: 20px; color: var(--ink);
}

h1 { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; margin: 0 0 8px; }
h2 { font-size: 20px; font-weight: 700; margin: 36px 0 12px; color: var(--ink); }
h3 { font-size: 16px; font-weight: 700; margin: 24px 0 8px; color: var(--ink); }
p { color: var(--sub); margin: 0 0 14px; }
a { color: var(--primary); }

.meta { color: var(--muted); font-size: 14px; margin-bottom: 28px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--sub);
}
th { color: var(--ink); font-weight: 700; }

hr { border: none; border-top: 1px solid var(--line); margin: 36px 0; }

.lang-divider {
  display: flex; align-items: center; gap: 12px;
  margin: 44px 0 20px; color: var(--muted); font-weight: 700; font-size: 13px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.lang-divider::before, .lang-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--line);
}

footer {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 13px;
}
footer a { color: var(--sub); }

code {
  background: var(--primary-soft); padding: 2px 6px; border-radius: 4px; font-size: 13px;
}