* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0a0a0f;
  --bg-elev: #13131a;
  --bg-card: #1a1a24;
  --border: #2a2a38;
  --text: #e8e8f0;
  --text-dim: #9999a8;
  --accent: #a78bfa;
  --accent-2: #60a5fa;
  --green: #4ade80;
  --yellow: #fbbf24;
  --red: #f87171;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Hero */
.hero {
  text-align: center;
  padding: 80px 24px 60px;
  background: radial-gradient(ellipse at top, rgba(167, 139, 250, 0.12), transparent 60%);
}
.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.hero p { color: var(--text-dim); font-size: 1.15rem; max-width: 600px; margin: 0 auto 32px; }
.badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 999px; font-size: 0.85rem; color: var(--text-dim);
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }

/* Stats bar */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  padding: 32px 24px; max-width: 1200px; margin: 0 auto;
}
.stat {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px; text-align: center;
}
.stat .num { font-size: 1.8rem; font-weight: 700; color: var(--accent); }
.stat .label { font-size: 0.85rem; color: var(--text-dim); margin-top: 4px; }

/* Category nav */
.cat-nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0; margin-bottom: 40px;
}
.cat-nav .container { display: flex; gap: 8px; flex-wrap: wrap; overflow-x: auto; }
.cat-nav a {
  color: var(--text-dim); text-decoration: none;
  padding: 6px 14px; border-radius: 999px; font-size: 0.9rem;
  transition: all 0.2s;
}
.cat-nav a:hover, .cat-nav a.active {
  background: var(--bg-card); color: var(--text);
  border: 1px solid var(--border);
}

/* Section */
section.category { padding: 0 24px 60px; max-width: 1200px; margin: 0 auto; }
section.category h2 {
  font-size: 1.5rem; font-weight: 700; margin-bottom: 8px;
  display: flex; align-items: center; gap: 12px;
}
section.category h2 .emoji { font-size: 1.8rem; }
section.category .desc { color: var(--text-dim); margin-bottom: 24px; font-size: 0.95rem; }

/* Card grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px; transition: all 0.2s;
  text-decoration: none; color: inherit; display: block;
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(167, 139, 250, 0.15);
}
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.card-logo {
  width: 40px; height: 40px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem; color: white;
  flex-shrink: 0;
}
.card-title { font-size: 1.05rem; font-weight: 600; flex: 1; }
.card-rating { color: var(--yellow); font-size: 0.9rem; }
.card-desc { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 12px; min-height: 2.7em; }
.card-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.tag {
  font-size: 0.75rem; padding: 2px 8px; border-radius: 4px;
  background: var(--bg-elev); color: var(--text-dim);
}
.tag.free { background: rgba(74, 222, 128, 0.15); color: var(--green); }
.tag.paid { background: rgba(251, 191, 36, 0.15); color: var(--yellow); }
.tag.oss { background: rgba(96, 165, 250, 0.15); color: var(--accent-2); }
.card-cta {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 12px; border-top: 1px solid var(--border);
  font-size: 0.85rem;
}
.card-cta .price { color: var(--text-dim); }
.card-cta .go { color: var(--accent); }

/* Footer */
footer {
  padding: 60px 24px 40px; text-align: center;
  border-top: 1px solid var(--border); margin-top: 60px;
}
footer .links { display: flex; gap: 24px; justify-content: center; margin-bottom: 20px; flex-wrap: wrap; }
footer a { color: var(--text-dim); text-decoration: none; }
footer a:hover { color: var(--accent); }
footer p { color: var(--text-dim); font-size: 0.85rem; }

@media (max-width: 640px) {
  .hero h1 { font-size: 2.2rem; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .grid { grid-template-columns: 1fr; }
}