* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #171717;
  background: #fff;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #e5e5e5;
}
.brand { font-size: 1.5rem; font-weight: 700; text-decoration: none; color: #171717; }
.brand span { color: #dc2626; }
main { max-width: 800px; margin: 0 auto; padding: 2rem 1.5rem; }
.btn {
  background: #dc2626;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  text-decoration: none;
  border: none;
  font-size: 1rem;
  cursor: pointer;
}
.search { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; }
.search input { flex: 1; font: inherit; padding: 0.5rem; border: 1px solid #d4d4d4; border-radius: 6px; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(2, 1fr); }
.card {
  display: block;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  padding: 1rem;
  text-decoration: none;
  color: inherit;
}
.card:hover { background: #f5f5f5; }
.category, article .category { font-size: 0.75rem; font-weight: 600; color: #dc2626; margin: 0; }
.date { font-size: 0.8rem; color: #737373; }
.back { color: #dc2626; text-decoration: none; font-size: 0.9rem; }