:root {
  --bg: #f5f7fa;
  --card: #fff;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --text: #1f2937;
  --sub: #6b7280;
  --border: #e5e7eb;
  --success: #059669;
  --danger: #dc2626;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  padding: 1.5rem;
}
.wrap { max-width: 1200px; margin: 0 auto; }

/* Header */
header { text-align: center; margin-bottom: 1.5rem; }
h1 { font-size: 1.75rem; margin-bottom: 0.25rem; }
.subtitle { color: var(--sub); font-size: 0.95rem; }

/* Category Nav */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 1rem 0 1.5rem;
}
.cat-btn {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text);
}
.cat-btn:hover, .cat-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Search */
#search {
  width: 100%;
  max-width: 500px;
  margin: 0 auto 1.5rem;
  display: block;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.card {
  background: var(--card);
  border-radius: 10px;
  padding: 1.25rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.card h3 { margin: 0 0 0.4rem; font-size: 1.1rem; }
.card a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  word-break: break-all;
  display: block;
  margin-bottom: 0.5rem;
}
.card a:hover { text-decoration: underline; }
.card p { color: var(--sub); font-size: 0.9rem; margin: 0.5rem 0; }
.tag {
  display: inline-block;
  background: #eef2ff;
  color: var(--primary);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  margin-right: 0.4rem;
}
.status { font-size: 0.8rem; margin-top: 0.5rem; }
.status.active { color: var(--success); }
.status.inactive { color: var(--danger); }

/* Suggestions Section */
.suggest-section {
  background: var(--card);
  border-radius: 10px;
  padding: 1.5rem;
  text-align: center;
  margin: 2rem 0;
  border: 1px dashed var(--border);
}
.suggest-section h2 { margin-bottom: 0.5rem; font-size: 1.2rem; }
.suggest-section p { color: var(--sub); margin-bottom: 1rem; }
.suggest-btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.2s;
}
.suggest-btn:hover { background: var(--primary-hover); }
.note { display: block; margin-top: 0.75rem; color: var(--sub); font-size: 0.85rem; }

/* Footer */
.disc {
  text-align: center;
  font-size: 0.85rem;
  color: var(--sub);
  padding: 1rem 0 2rem;
}

/* Responsive */
@media (max-width: 600px) {
  .category-nav { justify-content: flex-start; overflow-x: auto; padding-bottom: 0.5rem; }
  .cat-btn { flex-shrink: 0; }
}