:root {
  --bg: #0b0d12;
  --bg-elev: #12151d;
  --card: #161a24;
  --card-hover: #1d222f;
  --border: #262c3a;
  --text: #e8eaf0;
  --text-dim: #9aa2b4;
  --accent: #7c9cff;
  --accent-2: #a78bfa;
  --chip-bg: #1a1f2b;
  --chip-active: linear-gradient(135deg, #7c9cff, #a78bfa);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fb;
    --bg-elev: #ffffff;
    --card: #ffffff;
    --card-hover: #f0f2fa;
    --border: #e3e6ef;
    --text: #1a1d29;
    --text-dim: #5c6272;
    --accent: #4f6bed;
    --accent-2: #7c3aed;
    --chip-bg: #eef0f8;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px 64px;
}

header.hero {
  padding: 64px 0 32px;
  text-align: center;
}

header.hero h1 {
  font-size: clamp(28px, 5vw, 44px);
  margin: 0 0 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
}

header.hero p {
  color: var(--text-dim);
  font-size: 16px;
  margin: 0 auto;
  max-width: 560px;
  line-height: 1.6;
}

.search-box {
  margin: 28px auto 0;
  max-width: 480px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 13px 16px 13px 42px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: border-color .15s;
}

.search-box input:focus {
  border-color: var(--accent);
}

.search-box::before {
  content: "🔍";
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  opacity: .6;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 24px 0 8px;
}

.chip {
  border: 1px solid var(--border);
  background: var(--chip-bg);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--accent);
}

.chip.active {
  background: var(--chip-active);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}

section.category {
  margin-top: 40px;
}

section.category h2 {
  font-size: 20px;
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  transition: transform .15s, background .15s, border-color .15s;
}

.card:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card .name {
  font-size: 16px;
  font-weight: 700;
}

.card .desc {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.55;
  flex: 1;
}

.card .meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.empty {
  text-align: center;
  color: var(--text-dim);
  padding: 60px 0;
  display: none;
}

footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  padding: 40px 0 0;
}

footer a { color: var(--accent); text-decoration: none; }