/* ==========================================================================
   油气投资与咨询服务专属样式 solutions-oil-gas.css (Western Global Partners)
   ========================================================================== */

/* 1. 业务总览与 3 图画廊展区 (Oil & Gas Overview) */
.oil-overview-section {
  padding: 85px 0;
  background-color: #ffffff;
}

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

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

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

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

/* 2. 六大核心油气咨询服务 (6 Services Grid) */
.oil-services-section {
  padding: 90px 0;
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

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

.oil-service-card {
  background-color: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 32px 26px;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
}

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

.oil-service-icon {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  background-color: var(--bg-light);
  color: var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  border: 1px solid var(--border-color);
  transition: all 0.25s ease;
}

.oil-service-card:hover .oil-service-icon {
  background-color: var(--primary-navy);
  color: #ffd978;
  border-color: var(--primary-navy);
}

.oil-service-card h3 {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 12px;
  line-height: 1.35;
}

.oil-service-card p {
  font-size: 13.5px;
  color: var(--text-gray);
  line-height: 1.65;
  flex: 1;
}

/* 3. 核心竞争优势 (Advantages - 深蓝展区) */
.oil-adv-section {
  padding: 90px 0;
  background-color: var(--primary-navy);
  color: var(--white);
}

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

.oil-adv-card {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 28px 22px;
  transition: all 0.25s ease;
}

.oil-adv-card:hover {
  background-color: rgba(255, 255, 255, 0.09);
  border-color: #ffd978;
  transform: translateY(-4px);
}

.oil-adv-icon {
  font-size: 26px;
  color: #ffd978;
  margin-bottom: 16px;
}

.oil-adv-card h3 {
  font-size: 16.5px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

.oil-adv-card p {
  font-size: 13.5px;
  color: #cbd5e1;
  line-height: 1.65;
}

/* 4. 八阶段严谨交易与尽调流程 (8-Stage Workflow) */
.oil-flow-section {
  padding: 85px 0;
  background-color: #ffffff;
}

.oil-flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.oil-flow-card {
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-top: 4px solid var(--accent-gold);
  border-radius: 8px;
  padding: 22px 18px;
  text-align: center;
  transition: all 0.25s ease;
}

.oil-flow-card:hover {
  background-color: var(--white);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
}

.oil-flow-num {
  font-size: 11.5px;
  font-weight: 800;
  color: var(--accent-gold);
  margin-bottom: 6px;
}

.oil-flow-card h4 {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 6px;
}

.oil-flow-card p {
  font-size: 12px;
  color: var(--text-gray);
  line-height: 1.45;
}

/* 响应式适配 */
@media (max-width: 1200px) {
  .oil-services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .oil-adv-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .oil-flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

@media (max-width: 768px) {
  .oil-services-grid,
  .oil-adv-grid,
  .oil-flow-grid,
  .oil-gallery-wrap {
    grid-template-columns: 1fr;
  }
  .oil-gallery-wrap img.span-2 {
    grid-column: span 1;
  }
}