:root {
  color-scheme: light;
  --ink: #101828;
  --muted: #667085;
  --line: #e4e7ec;
  --brand: #2f80ed;
  --surface: #ffffff;
  --canvas: #f7f9fc;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: var(--brand); }
header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.nav, main, footer {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}
.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand { color: var(--ink); font-size: 22px; font-weight: 800; text-decoration: none; }
.links { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; }
.links a { color: var(--muted); text-decoration: none; }
main {
  margin-top: 40px;
  margin-bottom: 56px;
  padding: clamp(24px, 5vw, 56px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 16px 48px rgba(16, 24, 40, .06);
}
h1 { margin-top: 0; font-size: clamp(32px, 6vw, 48px); line-height: 1.15; }
h2 { margin-top: 36px; font-size: 23px; }
h3 { margin-top: 26px; font-size: 18px; }
p, li { color: #344054; }
.meta, .note { color: var(--muted); }
.note {
  padding: 16px 18px;
  border: 1px solid #bfd7ff;
  border-radius: 14px;
  background: #f2f7ff;
}
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 16px; }
.card { border: 1px solid var(--line); border-radius: 16px; padding: 20px; text-decoration: none; }
.card strong { display: block; color: var(--ink); margin-bottom: 8px; }
.card span { color: var(--muted); }
.language { margin-top: 56px; padding-top: 40px; border-top: 2px solid var(--line); }
footer { padding-bottom: 40px; color: var(--muted); font-size: 14px; }
@media (max-width: 640px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  main { margin-top: 20px; border-radius: 18px; }
}