/* ==================== 服务项目 ==================== */
.service-section {
  background: #FFFFFF;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 25px;
  max-width: 1200px;
  margin: 0 auto;
}

.service-item {
  background: var(--bg-card, #FFFFFF);
  padding: 30px 20px;
  border-radius: 12px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--border-color, #E5E6EB);
}

.service-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.service-icon {
  width: 90px;
  height: 90px;
  margin: 0 auto 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
  border-radius: 50%;
  padding: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.service-icon img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.service-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.service-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==================== AI能力建设 ==================== */
.ai-section {
  background: linear-gradient(180deg, #f8fbff 0%, #fff 100%);
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
  max-width: 1100px;
  margin: 0 auto 35px;
}

.ai-item {
  background: #FFFFFF;
  padding: 30px 20px;
  border-radius: 16px;
  text-align: center;
  border: 1px solid var(--border-color, #E5E6EB);
  transition: all 0.3s ease;
}

.ai-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
  border-color: #1A1A1D;
}

.ai-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-card, #FFFFFF) 0%, #fff 100%);
  border-radius: 50%;
  color: #1A1A1D;
  transition: all 0.3s ease;
}

.ai-item:hover .ai-icon {
  background: var(--blue);
  color: #fff;
  transform: scale(1.1);
}

.ai-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.ai-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.ai-features {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
}

.feature-tag {
  padding: 8px 20px;
  background: var(--bg-card, #FFFFFF);
  color: #1A1A1D;
  font-size: 14px;
  font-weight: 500;
  border-radius: 20px;
  border: 1px solid var(--border-color, #E5E6EB);
  transition: all 0.3s ease;
}

.feature-tag:hover {
  background: var(--blue);
  color: #fff;
}

/* ==================== AI应用场景 ==================== */
.ai场景-section {
  background: #FFFFFF;
}

.场景-list {
  max-width: 900px;
  margin: 0 auto;
}

.场景-item {
  display: flex;
  align-items: flex-start;
  gap: 25px;
  padding: 30px;
  background: linear-gradient(135deg, var(--bg-card, #FFFFFF) 0%, #fff 100%);
  border-radius: 16px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color, #E5E6EB);
  transition: all 0.3s ease;
}

.场景-item:hover {
  transform: translateX(10px);
  box-shadow: 0 8px 25px rgba(0,0,0, 0.12);
  border-color: #1A1A1D;
}

.场景-num {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  border-radius: 12px;
}

.场景-content {
  flex: 1;
}

.场景-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.场景-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ==================== 经典案例 ==================== */
.cases-section {
  background: var(--bg-card, #FFFFFF);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.case-item {
  background: #FFFFFF;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
}

.case-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.case-item img {
  width: 100%;
  height: 180px;
  object-fit: contain;
  background: var(--bg-card, #FFFFFF);
  padding: 15px;
  box-sizing: border-box;
}

.case-label {
  padding: 12px;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  background: #FFFFFF;
}

/* ==================== 为什么选择我们 ==================== */
.chose-section {
  background: #FFFFFF;
}

.chose-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.chose-item {
  text-align: center;
  padding: 30px 20px;
  background: var(--bg-card, #FFFFFF);
  border-radius: 12px;
  border: 1px solid var(--border-color, #E5E6EB);
  transition: transform 0.3s, box-shadow 0.3s;
}

.chose-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.chose-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #F5F5F5;
  border-radius: 50%;
  padding: 15px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
  transition: all 0.3s ease;
  color: #1A1A1D;
}

.chose-item:hover .chose-icon {
  background: var(--blue);
  box-shadow: 0 8px 25px rgba(0,0,0,0.2);
  transform: scale(1.05);
  color: #fff;
}

.chose-item:hover .chose-icon svg {
  stroke: #fff;
}

.chose-icon img,
.chose-icon svg {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: stroke 0.3s ease;
}

.chose-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.chose-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==================== CTA（背景由 product.css 统一提供） ==================== */
.cta-section {
  padding: 50px 0;
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1000px;
  margin: 0 auto;
  gap: 30px;
}

.cta-content h3 {
  font-size: 26px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.cta-content p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

.cta-btn {
  display: inline-block;
  padding: 14px 36px;
  background: #FFFFFF;
  color: #1A1A1D;
  font-size: 16px;
  font-weight: 600;
  border-radius: 30px;
  text-decoration: none;
  transition: transform 0.3s, box-shadow 0.3s;
  white-space: nowrap;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  color: #1A1A1D;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .ai-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cases-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .chose-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cta-box {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .banner-subtitle {
    font-size: 16px;
  }
  
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .service-icon {
    width: 70px;
    height: 70px;
  }
  
  .service-title {
    font-size: 16px;
  }
  
  .service-desc {
    font-size: 13px;
  }
  
  .ai-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .ai-icon {
    width: 60px;
    height: 60px;
  }
  
  .ai-title {
    font-size: 16px;
  }
  
  .ai-desc {
    font-size: 13px;
  }
  
  .ai-features {
    gap: 8px;
    margin-top: 24px;
  }
  
  .feature-tag {
    padding: 6px 14px;
    font-size: 13px;
  }
  
  .场景-item {
    padding: 20px;
    gap: 15px;
  }
  
  .场景-num {
    width: 50px;
    height: 50px;
    font-size: 18px;
  }
  
  .场景-content h3 {
    font-size: 18px;
  }
  
  .场景-content p {
    font-size: 14px;
  }
  
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .case-item img {
    height: 140px;
  }
  
  .chose-grid {
    grid-template-columns: 1fr 1fr;
    gap: 15px;
  }
  
  .chose-icon {
    width: 70px;
    height: 70px;
  }
  
  .chose-title {
    font-size: 16px;
  }
  
  .chose-desc {
    font-size: 13px;
  }
  
  .cta-box {
    padding: 0 20px;
  }
  
  .cta-content h3 {
    font-size: 22px;
  }
  
  .cta-btn {
    padding: 12px 28px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .service-grid {
    grid-template-columns: 1fr;
    max-width: 300px;
  }
  
  .ai-grid {
    grid-template-columns: 1fr;
    max-width: 280px;
    margin: 0 auto;
  }
  
  .场景-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .场景-item:hover {
    transform: translateY(-5px);
  }
  
  .cases-grid {
    grid-template-columns: 1fr;
    max-width: 280px;
    margin: 0 auto;
  }
  
  .chose-grid {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin: 0 auto;
  }
}