:root {
  --bg: #f7fafc;
  --panel: #ffffff;
  --text: #172033;
  --muted: #5f6f85;
  --line: #d8e0ea;
  --primary: #2563eb;
  --green: #16a34a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

header,
main,
footer {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  padding: 44px 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 6px;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 8px;
  font-size: 22px;
  letter-spacing: 0;
}

p,
li {
  color: var(--muted);
}

a {
  color: var(--primary);
  font-weight: 700;
}

.hero,
.card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.hero {
  display: grid;
  gap: 18px;
  margin-bottom: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(22, 163, 74, 0.12);
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  background: #eef3f8;
  color: #0f172a;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

footer {
  padding: 28px 0 44px;
  color: var(--muted);
}

@media (max-width: 720px) {
  .grid {
    grid-template-columns: 1fr;
  }
}