/* 综合类大数据与分析系统 - 企业级深黑科技风（与主站统一） */

.bd-page {
  --bd-accent-1: #22d3ee;
  --bd-accent-2: #0ea5e9;
  min-height: 100vh;
  background: var(--color-bg);
}

main.bd-main {
  padding-top: calc(var(--header-height) + 1.25rem);
  padding-bottom: 4rem;
}

.bd-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0 0 1.5rem;
}

.bd-breadcrumb a {
  color: rgba(56, 189, 248, 0.9);
}

.bd-breadcrumb a:hover {
  color: #7dd3fc;
}

.bd-breadcrumb__sep {
  opacity: 0.45;
}

/* 顶部两栏：文 + 插图 */
.bd-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2.5rem 2rem;
  align-items: center;
  margin-bottom: 3rem;
}

@media (max-width: 900px) {
  .bd-hero {
    grid-template-columns: 1fr;
  }
}

.bd-hero__tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #22d3ee;
  margin-bottom: 0.5rem;
}

.bd-hero__line {
  display: block;
  width: 3rem;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, #22d3ee, #0ea5e9, #38bdf8);
  margin-bottom: 0.9rem;
  box-shadow: 0 0 12px rgba(14, 165, 233, 0.35);
}

.bd-hero__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.bd-hero__lead {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  color: var(--color-text);
  margin: 0;
  max-width: 40em;
}

/* 右侧 Dashboard / 分析插图区 */
.bd-illust {
  position: relative;
  border-radius: var(--radius-lg);
  aspect-ratio: 4 / 3;
  min-height: 200px;
  background: linear-gradient(155deg, #0a1220 0%, #05070d 100%);
  border: 1px solid rgba(0, 180, 216, 0.1);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(56, 189, 248, 0.06);
  overflow: hidden;
}

.bd-illust::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.4;
  pointer-events: none;
}

.bd-illust__svg {
  position: absolute;
  inset: 8%;
  width: 84%;
  height: 84%;
  color: rgba(34, 211, 238, 0.45);
}

.bd-illust::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(0deg, rgba(3, 7, 12, 0.65) 0%, transparent 100%);
  pointer-events: none;
}

/* 产品体系 */
.bd-section {
  margin-top: 0.5rem;
}

.bd-section__head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.bd-section__line {
  width: 2.5rem;
  height: 2px;
  background: linear-gradient(90deg, #22d3ee, #0ea5e9);
  border-radius: 1px;
  flex-shrink: 0;
}

.bd-section__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: #e0f2fe;
  margin: 0;
  letter-spacing: 0.02em;
}

.bd-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem 1.25rem;
}

@media (max-width: 720px) {
  .bd-grid {
    grid-template-columns: 1fr;
  }
}

.bd-card {
  padding: 1.25rem 1.2rem 1.35rem;
  background: linear-gradient(165deg, rgba(20, 28, 42, 0.65) 0%, rgba(8, 12, 20, 0.88) 100%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3), inset 0 0 0 1px rgba(14, 165, 233, 0.04);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.bd-card:hover {
  border-color: rgba(0, 180, 216, 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(34, 211, 238, 0.06);
}

.bd-card h3 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #f0f9ff;
  margin: 0 0 0.5rem;
  line-height: 1.45;
  padding-left: 0.6rem;
  border-left: 2px solid #22d3ee;
  box-shadow: -1px 0 0 0 rgba(14, 165, 233, 0.25);
}

.bd-card p {
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin: 0;
}

.bd-cta {
  margin-top: 2.5rem;
  padding: 1.5rem 1.25rem;
  text-align: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(6, 40, 55, 0.35) 0%, rgba(8, 20, 35, 0.55) 100%);
  border: 1px solid rgba(34, 211, 238, 0.12);
}

.bd-cta p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0 0 0.9rem;
}

.bd-cta .btn--primary,
.bd-cta a.stocks-btn {
  margin: 0 0.25rem;
}