/* 企业 IT 与网络安全 - 与悠君主站深黑科技风统一，背景 #020617 */

.bd-page--it {
  --it-bg: #020617;
  min-height: 100vh;
  background: var(--it-bg) !important;
  color: var(--color-text);
}

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

/* 标题下短横线：蓝 → 青绿 */
.bd-page--it .bd-hero__line {
  width: 3.25rem;
  height: 3px;
  background: linear-gradient(90deg, #0ea5e9, #22d3ee, #4ade80);
  box-shadow: 0 0 16px rgba(14, 165, 233, 0.4);
}

.bd-page--it .bd-hero__title {
  color: #f8fafc;
}

.bd-page--it .bd-hero__subtitle {
  color: rgba(186, 230, 253, 0.88);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin: 0.35rem 0 0.5rem;
  letter-spacing: 0.04em;
}

.it-lead-block {
  max-width: none;
}

.it-illust-wrap {
  position: relative;
}

.it-illust-wrap::before {
  content: "";
  position: absolute;
  inset: -2rem -4% 40%;
  background-image: linear-gradient(90deg, rgba(8, 145, 178, 0.08) 1px, transparent 1px), linear-gradient(rgba(8, 145, 178, 0.06) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
  border-radius: 50% 30% 40% 30%;
  filter: blur(0.5px);
}

.it-illust-wrap .bd-illust {
  position: relative;
  z-index: 1;
  background: linear-gradient(160deg, rgba(15, 23, 42, 0.95) 0%, #020617 100%);
  border: 1px solid rgba(56, 189, 248, 0.12);
  box-shadow: 0 0 40px rgba(14, 165, 233, 0.12), inset 0 0 0 1px rgba(14, 165, 233, 0.05);
}

.it-illust-wrap .bd-illust::before {
  opacity: 0.5;
  background-size: 18px 18px;
}

/* 右侧主视觉：低透明网络 / 数据流，不压文字 */
.it-cyber-svg {
  color: #22d3ee;
  opacity: 0.28;
  filter: drop-shadow(0 0 8px rgba(14, 165, 233, 0.15));
}

.it-lead-block p + p {
  margin-top: 0.9rem;
}

.it-cap-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

/* 能力卡片 */
.it-cyber-card {
  padding: 1.35rem 1.2rem 1.4rem;
  background: rgba(15, 23, 42, 0.45) !important;
  border: 1px solid rgba(56, 189, 248, 0.14) !important;
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.35);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  animation: itFadeUp 0.6s ease backwards;
}

.it-cyber-card:nth-child(1) { animation-delay: 0.05s; }
.it-cyber-card:nth-child(2) { animation-delay: 0.1s; }
.it-cyber-card:nth-child(3) { animation-delay: 0.15s; }
.it-cyber-card:nth-child(4) { animation-delay: 0.2s; }

.it-cyber-card:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 238, 0.35) !important;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4), 0 0 24px rgba(14, 165, 233, 0.18);
}

.it-cyber-card h3 {
  border-left: 2px solid #22d3ee;
  padding-left: 0.6rem;
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  box-shadow: none;
}

.it-emoji {
  font-style: normal;
  line-height: 1.3;
  filter: grayscale(0.1);
}

.it-cta {
  margin-top: 2.5rem;
}

/* 应用场景 */
.it-scenarios {
  margin-top: 2.25rem;
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.5rem 1.35rem;
  background: linear-gradient(165deg, rgba(15, 23, 42, 0.55) 0%, rgba(2, 6, 23, 0.85) 100%);
  border: 1px solid rgba(56, 189, 248, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(34, 211, 238, 0.06);
  animation: itFadeUp 0.55s ease 0.15s backwards;
}

.it-scenarios h2 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: #e0f2fe;
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.it-scenarios__line {
  width: 2.5rem;
  height: 2px;
  background: linear-gradient(90deg, #0ea5e9, #4ade80);
  border-radius: 1px;
  flex-shrink: 0;
}

.it-scenarios ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.it-scenarios li {
  position: relative;
  padding-left: 1.25rem;
  font-size: var(--font-size-sm);
  line-height: 1.65;
  color: var(--color-text-muted);
}

.it-scenarios li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 1px;
  background: linear-gradient(135deg, #22d3ee, #4ade80);
  box-shadow: 0 0 8px rgba(34, 211, 238, 0.45);
  opacity: 0.9;
}

/* 合规说明 */
.it-compliance {
  margin-top: 2.25rem;
  padding: 1.4rem 1.35rem;
  border-radius: var(--radius-md);
  background: rgba(2, 6, 23, 0.65);
  border: 1px solid rgba(56, 189, 248, 0.2);
  box-shadow: 0 0 28px rgba(14, 165, 233, 0.08);
  animation: itFadeUp 0.6s ease 0.2s backwards;
}

.it-compliance p {
  font-size: 0.8125rem;
  line-height: 1.85;
  color: rgba(186, 230, 253, 0.82);
  margin: 0;
}

@keyframes itFadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.bd-page--it .bd-hero {
  animation: itFadeUp 0.55s ease;
}

@media (prefers-reduced-motion: reduce) {
  .it-cyber-card,
  .it-scenarios,
  .it-compliance,
  .bd-page--it .bd-hero {
    animation: none;
  }
  .it-cyber-card:hover {
    transform: none;
  }
}