:root {
  --bg: #0e1117;
  --panel: #161b22;
  --border: #2a313c;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}
header { padding: 2.5rem 1.5rem 1rem; text-align: center; }
header h1 { margin: 0; font-size: 2rem; letter-spacing: -0.02em; }
header p { color: var(--muted); margin: 0.3rem 0 0; }

.grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.2rem;
  padding: 1.5rem;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  align-content: start;
}
.card {
  display: block;
  padding: 1.4rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .icon { font-size: 2rem; }
.card h2 { margin: 0.5rem 0 0.3rem; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.88rem; line-height: 1.4; }

footer { text-align: center; color: var(--muted); padding: 1.2rem; font-size: 0.8rem; }