* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0f172a;
  --card-bg: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --radius: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 480px;
}

header {
  text-align: center;
  margin-bottom: 32px;
}

header h1 {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 8px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 16px;
}

.card-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.card h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.info-item {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.info-item .label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.info-item .value {
  font-size: 14px;
  font-weight: 600;
}

footer {
  text-align: center;
  margin-top: 32px;
}

footer p {
  color: var(--text-muted);
  font-size: 12px;
}

/* 响应式 */
@media (max-width: 360px) {
  .info-grid {
    grid-template-columns: 1fr;
  }
  header h1 {
    font-size: 24px;
  }
}