:root {
  --color-primary: #1a1a1a;
  --color-accent: #2b2b2b;
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-surface: #f9fafb;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --max-width: 900px;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  padding: 3rem 0 3rem;
  text-align: center;
}

.logo {
  width: 72px;
  height: 72px;
  margin-bottom: 1rem;
}

header h1 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

header p {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

/* Cards */
main {
  padding: 3rem 0 4rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: #c0c0c0;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  text-transform: none;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.card p {
  font-size: 0.85rem;
  color: var(--color-muted);
  flex: 1;
}

.card .arrow {
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.card:hover .arrow {
  color: var(--color-text);
}

/* Footer */
footer {
  padding: 2.5rem 0;
  margin-top: 1rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-muted);
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 700px) {
  .cards {
    grid-template-columns: 1fr;
  }

  header {
    padding: 2rem 0 1.5rem;
  }
}