:root {
  --bg: #f8fafc; --card: #ffffff; --text: #0f172a; --muted: #475569; --line: #e2e8f0;
  --brand: #0f766e; --brand-dark: #115e59; --soft: #f0fdfa;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #020617; --card: #0f172a; --text: #e2e8f0; --muted: #94a3b8; --line: #1e293b;
          --brand: #2dd4bf; --brand-dark: #5eead4; --soft: #042f2e; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif; }
header { background: linear-gradient(135deg, #115e59, #0f766e 55%, #155e75); color: #fff; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header .wrap { padding-top: 28px; padding-bottom: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none;
  font-weight: 700; font-size: 18px; }
.brand span.tile { width: 34px; height: 34px; border-radius: 9px; background: #fff; color: #115e59;
  display: grid; place-items: center; font-size: 18px; }
header h1 { margin: 18px 0 4px; font-size: 30px; line-height: 1.2; }
header p { margin: 0; color: #ccfbf1; }
nav.lang { margin-top: 14px; font-size: 14px; }
nav.lang a { color: #fff; opacity: .85; margin-right: 14px; }
main { padding: 28px 0 48px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 8px 22px 18px; }
h2 { font-size: 20px; margin: 26px 0 6px; }
h3 { font-size: 16px; margin: 18px 0 4px; }
p, li { color: var(--muted); }
strong { color: var(--text); }
a { color: var(--brand); }
ul { padding-left: 22px; }
.note { background: var(--soft); border-radius: 12px; padding: 12px 16px; margin: 18px 0; color: var(--text); }
footer { color: var(--muted); font-size: 13px; padding: 0 0 36px; }
.links a { display: block; padding: 14px 18px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--card); text-decoration: none; color: var(--text); margin-bottom: 10px; font-weight: 600; }