:root {
  --bg: #f6f6f8;
  --header: #4f46e5;
  --accent: #06b6d4;
  --card: #ffffff;
  --text: #111;
  --muted: #666;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }

/* Header/hero */
.site-header {
  padding: 1rem;
  text-align: center;
  background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  color: white;
}
.site-header h1 { margin: 0; font-size: 1.4rem; letter-spacing: .5px; }
.site-header p { margin: .25rem 0 0; opacity: .95; }

/* Hero area for emphasis (optional) */
.hero {
  padding: 1rem 1rem 0;
  text-align: left;
}
.hero h2 { margin: 0 0 .5rem; font-size: 1.25rem; }
.hero form { display: flex; gap: .5rem; align-items: center; }
.hero input[type="text"] {
  flex: 1;
  padding: .6rem 0.8rem;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 1rem;
}
.hero button {
  padding: .6rem 1rem;
  border: none;
  background: #4f46e5;
  color: white;
  border-radius: 6px;
  cursor: pointer;
}
.grid { padding: 1rem; }
.grid-inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.card {
  background: var(--card);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
  text-decoration: none;
}
.card-number { font-weight: 600; color: #333; }
.card-title { font-size: 1.05rem; margin-top: .25rem; }
.card-subtitle { font-size: .85rem; color: var(--muted); }

@media (min-width: 600px) {
  .grid-inner { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 900px) {
  .grid-inner { grid-template-columns: repeat(4, 1fr); }
}

.site-footer {
  padding: 12px 16px;
  text-align: center;
  font-size: 0.85rem;
  color: #666;
  border-top: 1px solid #eee;
  background: #fff;
}
.site-footer a { color: #666; text-decoration: none; margin: 0 6px; }