:root {
  color-scheme: light dark;
  --bg: #f7f7f4;
  --panel: #ffffff;
  --text: #202124;
  --muted: #5f6368;
  --line: #dcded8;
  --accent: #176b87;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111312;
    --panel: #1b1d1c;
    --text: #f1f3f2;
    --muted: #bdc3c0;
    --line: #343836;
    --accent: #7bc7dd;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

header,
main,
footer {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
}

header {
  padding: 40px 0 20px;
}

main {
  padding-bottom: 40px;
}

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.94rem;
  padding: 24px 0 36px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.12;
  margin: 8px 0 10px;
}

h2 {
  border-top: 1px solid var(--line);
  font-size: 1.35rem;
  margin: 32px 0 12px;
  padding-top: 24px;
}

h3 {
  font-size: 1.05rem;
  margin: 24px 0 8px;
}

p,
ul,
ol {
  margin: 0 0 16px;
}

ul,
ol {
  padding-left: 22px;
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

nav a,
.button {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  padding: 8px 14px;
  text-decoration: none;
}

.muted {
  color: var(--muted);
}

.lang {
  margin-top: 28px;
}

.summary-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 24px;
}

.summary-grid section {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.summary-grid h2 {
  border: 0;
  font-size: 1.05rem;
  margin: 0 0 8px;
  padding: 0;
}

@media (max-width: 640px) {
  header,
  main,
  footer {
    width: min(100% - 28px, 920px);
  }

  .card {
    padding: 20px;
  }
}