:root {
  --red: #F40009;
  --red-dark: #C40007;
  --text: #1A1A1A;
  --muted: #555;
  --bg: #F5F5F5;
  --card: #FFFFFF;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  border-top: 6px solid var(--red);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 16px;
}

h1 {
  margin: 0 0 32px;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  display: block;
  padding: 24px;
  background: var(--card);
  border-radius: 12px;
  border-left: 5px solid var(--red);
  box-shadow: 0 1px 3px rgba(0, 0, 0, .08);
  color: inherit;
  text-decoration: none;
  transition: transform .15s, box-shadow .15s;
}

.card:hover,
.card:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .12);
  outline: none;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  color: var(--red-dark);
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}