/* ==========================================================================
   预制与智能住宅专属样式 solutions-prefab-housing.css (Western Global Partners)
   ========================================================================== */

/* 1. 业务简介与画廊 (Overview Section) */
.prefab-overview-section {
  padding: 85px 0;
  background-color: #ffffff;
}

.prefab-overview-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.prefab-gallery-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.prefab-gallery-wrap img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.prefab-gallery-wrap img.span-2 {
  grid-column: span 2;
  height: 200px;
}

/* 2. 6 大住宅建筑类型网格 (6 Housing Styles) */
.prefab-styles-section {
  padding: 90px 0;
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.prefab-styles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.prefab-style-card {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.03);
}

.prefab-style-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-gold);
  box-shadow: 0 16px 30px -8px rgba(0, 0, 0, 0.1);
}

.prefab-style-img {
  width: 100%;
  height: 190px;
  overflow: hidden;
}

.prefab-style-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.prefab-style-card:hover .prefab-style-img img {
  transform: scale(1.06);
}

.prefab-style-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.prefab-style-body h3 {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 10px;
}

.prefab-style-body p {
  font-size: 13.5px;
  color: var(--text-gray);
  line-height: 1.65;
}

/* 3. 三大价格配置梯度 (3 Price Tiers) */
.prefab-tiers-section {
  padding: 85px 0;
  background-color: #ffffff;
}

.prefab-tiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tier-card {
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 32px 28px;
  text-align: center;
  transition: all 0.25s ease;
}

.tier-card.featured-tier {
  background-color: var(--white);
  border: 2px solid var(--accent-gold);
  box-shadow: 0 12px 30px rgba(200, 154, 63, 0.15);
  position: relative;
}

.tier-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent-gold);
  color: var(--white);
  font-size: 11px;
  font-weight: 800;
  padding: 3px 14px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.tier-card:hover {
  transform: translateY(-4px);
}

.tier-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary-navy);
  margin-bottom: 12px;
}

.tier-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.65;
}

/* 4. 智能住宅与适老化并列两大展区 (Smart & Senior Sections) */
.prefab-smart-section {
  padding: 90px 0;
  background-color: var(--primary-navy);
  color: var(--white);
}

.prefab-smart-grid,
.prefab-senior-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.prefab-feature-card {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 26px 22px;
  transition: all 0.25s ease;
}

.prefab-feature-card:hover {
  background-color: rgba(255, 255, 255, 0.09);
  border-color: #ffd978;
  transform: translateY(-3px);
}

.prefab-feat-icon {
  font-size: 26px;
  color: #ffd978;
  margin-bottom: 14px;
}

.prefab-feature-card h3 {
  font-size: 16.5px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.prefab-feature-card p {
  font-size: 13px;
  color: #cbd5e1;
  line-height: 1.6;
}

/* 5. 适老化展区 (Senior Living White Section) */
.prefab-senior-section {
  padding: 90px 0;
  background-color: #ffffff;
}

.senior-card {
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 26px 22px;
  transition: all 0.25s ease;
}

.senior-card:hover {
  background-color: var(--white);
  border-color: var(--accent-gold);
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.06);
}

.senior-icon {
  font-size: 26px;
  color: var(--accent-gold);
  margin-bottom: 14px;
}

.senior-card h3 {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 8px;
}

.senior-card p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.6;
}

/* 6. 7 步合作推进流程 (7-Phase Timeline) */
.prefab-flow-section {
  padding: 85px 0;
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-color);
}

.prefab-flow-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
  margin-top: 40px;
}

.prefab-flow-card {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-top: 4px solid var(--accent-gold);
  border-radius: 8px;
  padding: 20px 14px;
  text-align: center;
  transition: all 0.25s ease;
}

.prefab-flow-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.06);
}

.prefab-flow-num {
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-gold);
  margin-bottom: 6px;
}

.prefab-flow-card h4 {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 4px;
}

.prefab-flow-card p {
  font-size: 11.5px;
  color: var(--text-gray);
  line-height: 1.45;
}

/* 响应式适配 */
@media (max-width: 1200px) {
  .prefab-styles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .prefab-smart-grid,
  .prefab-senior-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .prefab-flow-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 1024px) {
  .prefab-overview-grid {
    grid-template-columns: 1fr;
  }
  .prefab-tiers-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .prefab-styles-grid,
  .prefab-smart-grid,
  .prefab-senior-grid,
  .prefab-flow-grid,
  .prefab-gallery-wrap {
    grid-template-columns: 1fr;
  }
  .prefab-gallery-wrap img.span-2 {
    grid-column: span 1;
  }
}