/* ============ 产品详情页 - 高品质视觉规范 ============ */
:root {
  --pd-primary: #009348;
  --pd-primary-dark: #007a3b;
  --pd-primary-soft: rgba(0, 147, 72, 0.08);
  --pd-dark: #111827;             /* 标题 — 近纯黑 15.4:1 */
  --pd-text: #374151;             /* 正文 — 深炭灰  9.7:1 */
  --pd-text-muted: #4b5563;       /* 辅助说明 —      7.0:1 (原 #6b7785 仅 4.3:1) */
  --pd-border: #e2e8f0;
  --pd-bg-soft: #f8fafc;
  --pd-shadow-sm: 0 4px 16px rgba(15, 30, 60, 0.06);
  --pd-shadow-md: 0 12px 36px rgba(15, 30, 60, 0.10);
  --pd-shadow-lg: 0 24px 60px rgba(15, 30, 60, 0.14);
  --pd-radius: 14px;
}

body { color: var(--pd-text); background: #fff; }

.pd-wrapper { padding-top: 86px; }

/* ----------- Hero ----------- */
.pd-hero {
  position: relative;
  padding: 70px 0 80px;
  background: linear-gradient(135deg, #0e2a4a 0%, #103762 45%, #1a5a8a 100%);
  color: #fff;
  overflow: hidden;
}
.pd-hero::before, .pd-hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}
.pd-hero::before {
  width: 480px; height: 480px;
  background: rgba(31, 187, 107, 0.45);
  top: -180px; right: -120px;
}
.pd-hero::after {
  width: 380px; height: 380px;
  background: rgba(74, 148, 240, 0.4);
  bottom: -180px; left: -100px;
}
.pd-hero-inner { position: relative; z-index: 2; }

.pd-breadcrumb {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.82);  /* 提升对比 */
  margin-bottom: 26px;
  letter-spacing: 0.3px;
}
.pd-breadcrumb a {
  color: rgba(255, 255, 255, 0.82);   /* 提升可读性 */
  text-decoration: none;
  transition: color .2s;
}
.pd-breadcrumb a:hover { color: #fff; }
.pd-breadcrumb span { color: #fff; }

.pd-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(31, 187, 107, 0.18);
  border: 1px solid rgba(31, 187, 107, 0.45);
  border-radius: 100px;
  font-size: 13px;
  color: #4ee18f;
  margin-bottom: 22px;
}
.pd-tag .iconfont { font-size: 14px; }

.pd-title {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 18px;
  color: #fff;
  letter-spacing: -0.5px;
}
.pd-subtitle {
  font-size: 20px;
  font-weight: 500;
  color: #d1fae5;          /* 亮绿白 — ≈12:1 on #0e2a4a */
  margin: 0 0 16px;
  line-height: 1.5;
}
.pd-desc {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);  /* 提升到 0.88 — ≈11:1 on hero bg */
  margin: 0 0 32px;
  max-width: 560px;
}

.pd-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.pd-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all .25s ease;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.pd-btn-primary {
  background: var(--pd-primary);
  color: #fff !important;
  box-shadow: 0 6px 20px rgba(31, 187, 107, 0.4);
}
.pd-btn-primary:hover {
  background: var(--pd-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(31, 187, 107, 0.5);
}
.pd-btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff !important;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
}
.pd-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}
.pd-btn-lg { padding: 16px 40px; font-size: 16px; }

.pd-hero-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 320px;
  position: relative;
}
.pd-hero-icon::before {
  content: '';
  position: absolute;
  inset: 30px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 187, 107, 0.35) 0%, transparent 70%);
  animation: pdPulse 4s ease-in-out infinite;
}
.pd-hero-icon .iconfont {
  position: relative;
  font-size: 180px;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 10px 40px rgba(31, 187, 107, 0.6);
}
@keyframes pdPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.08); opacity: 1; }
}

/* ----------- 数据统计 ----------- */
.pd-stats {
  background: #fff;
  padding: 0;
  margin-top: -40px;
  position: relative;
  z-index: 3;
}
.pd-stats-inner {
  background: #fff;
  border-radius: var(--pd-radius);
  box-shadow: var(--pd-shadow-lg);
  padding: 36px 20px;
}
.pd-stat-item {
  text-align: center;
  padding: 12px 0;
  border-right: 1px solid var(--pd-border);
}
.pd-stat-item:last-child { border-right: none; }
.pd-stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--pd-primary);
  line-height: 1;
  margin-bottom: 8px;
}
.pd-stat-num small { font-size: 18px; margin-left: 2px; color: var(--pd-primary); }
.pd-stat-label {
  font-size: 14px;
  color: var(--pd-text-muted);
}

/* ----------- Section 通用 ----------- */
.pd-section { padding: 80px 0; }
.pd-section-alt { background: var(--pd-bg-soft); }
.pd-section-head {
  text-align: center;
  margin-bottom: 56px;
}
.pd-h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--pd-dark);
  margin: 0 0 14px;
  letter-spacing: -0.3px;
  position: relative;
  display: inline-block;
  padding-bottom: 14px;
}
.pd-h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: var(--pd-primary);
  border-radius: 2px;
}
.pd-section-sub {
  font-size: 16px;
  color: var(--pd-text-muted);
  margin: 18px 0 0;
}

/* ----------- 功能卡片 ----------- */
.pd-feature-card {
  background: #fff;
  border-radius: var(--pd-radius);
  padding: 36px 28px;
  height: 100%;
  border: 1px solid var(--pd-border);
  transition: all .3s ease;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.pd-feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pd-primary), #4ee18f);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.pd-feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--pd-shadow-md);
  border-color: transparent;
}
.pd-feature-card:hover::before { transform: scaleX(1); }

.pd-feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  background: var(--pd-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: all .3s;
}
.pd-feature-card:hover .pd-feature-icon {
  background: var(--pd-primary);
  transform: rotate(-6deg) scale(1.05);
}
.pd-feature-icon .iconfont {
  font-size: 28px;
  color: var(--pd-primary);
  transition: color .3s;
}
.pd-feature-card:hover .pd-feature-icon .iconfont { color: #fff; }

.pd-feature-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--pd-dark);
  margin: 0 0 12px;
}
.pd-feature-desc {
  font-size: 14px;
  color: var(--pd-text-muted);
  line-height: 1.75;
  margin: 0;
}

/* ----------- 适用场景 ----------- */
.pd-scenario {
  background: #fff;
  border-radius: var(--pd-radius);
  padding: 40px 32px;
  height: 100%;
  position: relative;
  border: 1px solid var(--pd-border);
  margin-bottom: 24px;
  overflow: hidden;
  transition: all .3s;
}
.pd-scenario:hover {
  transform: translateY(-4px);
  box-shadow: var(--pd-shadow-md);
}
.pd-scenario-num {
  font-size: 56px;
  font-weight: 800;
  color: var(--pd-primary-soft);
  line-height: 1;
  position: absolute;
  top: 20px;
  right: 24px;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  letter-spacing: -2px;
}
.pd-scenario h5 {
  font-size: 18px;
  font-weight: 600;
  color: var(--pd-dark);
  margin: 0 0 14px;
  position: relative;
  z-index: 2;
}
.pd-scenario p {
  font-size: 14px;
  color: var(--pd-text-muted);
  line-height: 1.8;
  margin: 0;
  position: relative;
  z-index: 2;
}

/* ----------- 价值收益 ----------- */
.pd-benefit {
  display: flex;
  gap: 18px;
  padding: 28px;
  background: #fff;
  border-radius: var(--pd-radius);
  border: 1px solid var(--pd-border);
  margin-bottom: 24px;
  transition: all .3s;
}
.pd-benefit:hover {
  border-color: var(--pd-primary);
  box-shadow: var(--pd-shadow-sm);
}
.pd-benefit-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--pd-primary), #4ee18f);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}
.pd-benefit-content h5 {
  font-size: 16px;
  font-weight: 600;
  color: var(--pd-dark);
  margin: 0 0 8px;
}
.pd-benefit-content p {
  font-size: 14px;
  color: var(--pd-text-muted);
  line-height: 1.7;
  margin: 0;
}

/* ----------- CTA Section ----------- */
.pd-cta-section {
  padding: 70px 0;
  background: linear-gradient(135deg, #0e2a4a 0%, #103762 60%, #1a5a8a 100%);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.pd-cta-section::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 187, 107, 0.25) 0%, transparent 65%);
  top: -300px; left: 50%;
  transform: translateX(-50%);
  filter: blur(40px);
}
.pd-cta-section > .container { position: relative; z-index: 2; }
.pd-cta-section h2 {
  font-size: 36px;
  font-weight: 700;
  margin: 0 0 14px;
  color: #fff;
}
.pd-cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);   /* 提升对比度 */
  margin: 0 0 32px;
}
.pd-cta-section .pd-cta {
  justify-content: center;
}

/* ----------- 相关产品 ----------- */
.pd-related {
  padding: 60px 0 80px;
  background: var(--pd-bg-soft);
}
.pd-related-card {
  background: #fff;
  border-radius: var(--pd-radius);
  padding: 24px;
  text-decoration: none !important;
  display: block;
  transition: all .3s;
  border: 1px solid var(--pd-border);
  margin-bottom: 20px;
  height: 100%;
}
.pd-related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--pd-shadow-md);
  border-color: var(--pd-primary);
}
.pd-related-card .iconfont {
  font-size: 24px;
  color: var(--pd-primary);
  margin-bottom: 10px;
  display: block;
}
.pd-related-card h6 {
  font-size: 15px;
  font-weight: 600;
  color: var(--pd-dark);
  margin: 0 0 6px;
}
.pd-related-card span {
  font-size: 12px;
  color: var(--pd-text-muted);
}

/* ----------- 响应式 ----------- */
@media (max-width: 768px) {
  .pd-hero { padding: 50px 0 60px; }
  .pd-title { font-size: 32px; }
  .pd-subtitle { font-size: 17px; }
  .pd-desc { font-size: 14px; }
  .pd-section { padding: 56px 0; }
  .pd-h2 { font-size: 26px; }
  .pd-cta-section h2 { font-size: 26px; }
  .pd-stat-item { border-right: none; border-bottom: 1px solid var(--pd-border); padding: 16px 0; }
  .pd-stat-item:last-child { border-bottom: none; }
  .pd-stat-num { font-size: 28px; }
  .pd-stats-inner { padding: 16px; }
}