:root {
  --background-color: #0b1220;
  --card-background-color: #111a2e;
  --card-border-color: rgba(255,255,255,0.06);
  --text-primary-color: #e6edf3;
  --primary-color: #5b9cff;
}

/* 整体背景更深一点（高级感关键） */
body {
  background: radial-gradient(circle at top, #0f1a2e, #0b1220);
}

/* 卡片升级 */
.card {
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 12px 30px rgba(0,0,0,0.35);
  transition: all 0.2s ease;
}

/* hover 提升层级感 */
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(91,156,255,0.35);
  box-shadow: 0 18px 40px rgba(0,0,0,0.45);
}

/* service 卡片更紧凑高级 */
.service {
  border-radius: 14px;
  padding: 10px 12px;
}

/* 标题更“产品化” */
h1, h2, h3 {
  letter-spacing: 0.3px;
  font-weight: 600;
}

/* 搜索框更现代 */
input {
  border-radius: 12px !important;
}