/* 赛博朋克主题 — 热点追踪页 */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0f;
  --panel: #0f0f1a;
  --border: #1a1a3a;
  --fg: #e0e0ff;
  --fg-dim: #a0a0c0;
  --fg-muted: #555;
  --cyan: #00f5ff;
  --magenta: #ff6ac1;
  --violet: #c0aaff;
  --link: #a0c8ff;
}

body {
  background:
    radial-gradient(ellipse at top, #12122a 0%, var(--bg) 60%),
    var(--bg);
  color: var(--fg);
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  min-height: 100vh;
  padding: 24px 16px;
  line-height: 1.5;
}

h1 {
  text-align: center;
  font-size: 2rem;
  letter-spacing: 4px;
  color: var(--cyan);
  text-shadow: 0 0 20px rgba(0, 245, 255, 0.5);
  margin-bottom: 4px;
}

.subtitle {
  text-align: center;
  color: var(--fg-muted);
  font-size: 0.85rem;
  margin-bottom: 32px;
  letter-spacing: 2px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  max-width: 1400px;
  margin: 0 auto 32px;
}

.platform-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.platform-card:hover {
  border-color: rgba(0, 245, 255, 0.35);
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.1);
}

.platform-title {
  background: linear-gradient(135deg, #0f0f2a, #1a0a2a);
  padding: 14px 18px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 2px;
  border-bottom: 1px solid var(--border);
  color: var(--violet);
}

.platform-content { padding: 12px 16px; }

.section-header {
  color: var(--magenta);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin: 10px 0 6px;
  padding-left: 6px;
  border-left: 2px solid var(--magenta);
}

.topic-item {
  padding: 6px 0;
  border-bottom: 1px solid #1a1a2a;
  font-size: 0.88rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.topic-item:last-child { border-bottom: none; }
.topic-item a {
  color: var(--link);
  text-decoration: none;
  flex: 1;
  line-height: 1.4;
}
.topic-item a:hover {
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(0, 245, 255, 0.4);
}
.extra {
  color: var(--fg-muted);
  font-size: 0.75rem;
  white-space: nowrap;
}
.topic-text {
  color: var(--fg-muted);
  font-size: 0.85rem;
  padding: 6px 0;
}

.inspiration {
  max-width: 900px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid #2a1a3a;
  border-radius: 12px;
  padding: 24px 28px;
}
.inspiration h2 {
  color: var(--magenta);
  font-size: 1rem;
  letter-spacing: 3px;
  margin-bottom: 16px;
  text-shadow: 0 0 12px rgba(255, 106, 193, 0.4);
}
.inspiration p {
  color: #c0c0e0;
  line-height: 1.8;
  margin-bottom: 8px;
  font-size: 0.92rem;
}

.footer {
  text-align: center;
  color: #444;
  font-size: 0.75rem;
  letter-spacing: 2px;
  margin-top: 32px;
  padding-top: 16px;
}

@media (max-width: 640px) {
  h1 { font-size: 1.5rem; }
  .grid { grid-template-columns: 1fr; }
}