:root {
  color-scheme: light;
  --background: #f4f7fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #626b7b;
  --border: #e2e8f0;
  --primary: #3157c8;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--primary); }

.wrap {
  width: min(880px, calc(100% - 32px));
  margin-inline: auto;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding-block: 14px;
}

.brand {
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  margin-right: auto;
}

main {
  background: var(--surface);
  margin-block: 28px;
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgb(28 45 80 / 6%);
}

h1 { font-size: clamp(1.8rem, 5vw, 2.5rem); line-height: 1.2; margin-top: 0; }
h2 { font-size: 1.2rem; line-height: 1.35; margin-top: 1.8em; }
.updated, footer { color: var(--muted); font-size: .92rem; }
.cards { display: grid; gap: 16px; margin-top: 30px; }
.card { padding: 20px; border: 1px solid var(--border); border-radius: 12px; }
.card h2 { margin-top: 0; }
footer { padding-block: 4px 36px; }

@media (max-width: 620px) {
  nav { gap: 12px; }
  .brand { flex-basis: 100%; }
}