/* ========================================
   行业解决方案详情页专属样式
   ======================================== */

/* ==================== 面包屑导航 ==================== */
.breadcrumb {
  background: var(--gray-50);
  /* 固定导航栏(80px)悬浮于页面顶部，需让位避免被遮挡，移动端在媒体查询中调整 */
  padding: calc(80px + 1rem) 0 var(--spacing-lg);
}

.breadcrumb-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--gray-500);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.breadcrumb-item a {
  color: var(--tech-blue);
  transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--tech-blue-dark);
}

.breadcrumb-item.active {
  color: var(--gray-700);
  font-weight: 600;
}

.breadcrumb-separator {
  color: var(--gray-300);
}

/* ==================== 详情页Hero区 ==================== */
.detail-hero {
  background: var(--gradient-primary);
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.detail-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 40%, rgba(0, 82, 163, 0.35) 0%, transparent 50%),
    radial-gradient(circle at 80% 60%, rgba(0, 168, 120, 0.25) 0%, transparent 45%);
}

.detail-hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.detail-hero-text h1 {
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-lg);
  line-height: 1.3;
}

.detail-hero-text p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
}

.detail-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.detail-hero-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.detail-hero-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
}

.detail-hero-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

/* ==================== 行业挑战 ==================== */
.challenges-section {
  background: var(--gray-50);
}

.challenges-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.challenge-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  text-align: center;
}

.challenge-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.challenge-card-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto var(--spacing-lg);
  background: linear-gradient(135deg, var(--tech-blue) 0%, var(--eco-green) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.challenge-card-icon svg {
  width: 35px;
  height: 35px;
  color: var(--white);
}

.challenge-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: var(--spacing-sm);
}

.challenge-card-desc {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ==================== 解决方案架构 ==================== */
.architecture-section {
  background: var(--white);
}

.architecture-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.architecture-diagram {
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  position: relative;
  overflow: hidden;
}

.architecture-diagram::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 168, 120, 0.1) 0%, transparent 70%);
}

.architecture-flow {
  position: relative;
  z-index: 1;
}

.architecture-step {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  backdrop-filter: blur(4px);
}

.architecture-step:last-child {
  margin-bottom: 0;
}

.architecture-step-number {
  width: 40px;
  height: 40px;
  background: var(--eco-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  flex-shrink: 0;
}

.architecture-step-content {
  flex: 1;
}

.architecture-step-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--spacing-xs);
}

.architecture-step-desc {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

.architecture-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.architecture-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  color: var(--gray-700);
  font-weight: 500;
}

.architecture-feature svg {
  width: 18px;
  height: 18px;
  color: var(--eco-green);
}

/* ==================== 案例展示 ==================== */
.case-section {
  background: var(--gray-50);
}

.case-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.case-card-image {
  height: 220px;
  overflow: hidden;
}

.case-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.case-card:hover .case-card-image img {
  transform: scale(1.05);
}

.case-card-content {
  padding: var(--spacing-xl);
}

.case-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.case-card-industry {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(0, 82, 163, 0.1);
  color: var(--tech-blue);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.case-card-date {
  font-size: 0.8125rem;
  color: var(--gray-400);
}

.case-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: var(--spacing-sm);
}

.case-card-desc {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.case-card-stats {
  display: flex;
  gap: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--gray-100);
}

.case-stat-item {
  text-align: center;
}

.case-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--tech-blue);
}

.case-stat-label {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-top: var(--spacing-xs);
}

/* ==================== 技术规格 ==================== */
.specs-section {
  background: var(--white);
}

.specs-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--gray-100);
  padding-bottom: var(--spacing-lg);
}

.specs-tab {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-500);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.specs-tab.active {
  color: var(--tech-blue);
  background: rgba(0, 82, 163, 0.1);
}

.specs-tab:hover {
  color: var(--tech-blue-dark);
}

.specs-content {
  display: none;
}

.specs-content.active {
  display: block;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table th,
.specs-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--gray-100);
}

.specs-table th {
  background: var(--gray-50);
  font-weight: 600;
  color: var(--gray-700);
  width: 30%;
}

.specs-table td {
  color: var(--gray-600);
}

.specs-table tr:hover td {
  background: var(--gray-50);
}

.specs-highlight {
  color: var(--tech-blue);
  font-weight: 600;
}

/* ==================== 性能指标 ==================== */
.metrics-section {
  background: var(--gradient-tech);
  position: relative;
  overflow: hidden;
}

.metrics-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 90% 50%, rgba(0, 168, 120, 0.3) 0%, transparent 35%);
}

.metrics-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-2xl);
}

.metric-card {
  text-align: center;
  padding: var(--spacing-2xl);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(4px);
}

.metric-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric-icon svg {
  width: 30px;
  height: 30px;
  color: var(--white);
}

.metric-value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-xs);
}

.metric-value span {
  font-size: 1.5rem;
  font-weight: 600;
}

.metric-label {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.8);
}

/* ==================== FAQ手风琴 ==================== */
.faq-section {
  background: var(--gray-50);
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.faq-header:hover {
  background: var(--gray-50);
}

.faq-header.active {
  background: rgba(0, 82, 163, 0.05);
}

.faq-question {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary-dark);
  flex: 1;
}

.faq-toggle {
  width: 32px;
  height: 32px;
  background: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.faq-header.active .faq-toggle {
  background: var(--tech-blue);
}

.faq-toggle svg {
  width: 16px;
  height: 16px;
  color: var(--gray-600);
  transition: transform var(--transition-normal);
}

.faq-header.active .faq-toggle svg {
  color: var(--white);
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 var(--spacing-xl);
  max-height: 0;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-content.active {
  padding: var(--spacing-lg) var(--spacing-xl);
  max-height: 300px;
}

.faq-answer {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.8;
}

/* ==================== 响应式设计 ==================== */

/* 平板 (1024px - 1439px) */
@media (max-width: 1439px) {
  .detail-hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }

  .detail-hero-text h1 {
    font-size: 2.25rem;
  }

  .architecture-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 小平板 (768px - 1023px) */
@media (max-width: 1023px) {
  .detail-hero {
    padding: 120px 0 60px;
  }

  .detail-hero-text h1 {
    font-size: 2rem;
  }

  .challenges-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-card-image {
    height: 200px;
  }

  .metric-value {
    font-size: 2.5rem;
  }
}

/* 手机 (< 768px) */
@media (max-width: 767px) {
  .breadcrumb {
    padding-top: calc(70px + 0.75rem);
  }

  .detail-hero {
    padding: 110px 0 50px;
  }

  .detail-hero-text h1 {
    font-size: 1.75rem;
  }

  .detail-hero-image img {
    height: 280px;
  }

  .challenges-grid {
    grid-template-columns: 1fr;
  }

  .architecture-step {
    flex-direction: column;
    text-align: center;
  }

  .case-card-stats {
    gap: var(--spacing-md);
  }

  .case-stat-value {
    font-size: 1.25rem;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .metric-card {
    padding: var(--spacing-lg);
  }

  .metric-value {
    font-size: 2rem;
  }

  .specs-tabs {
    flex-wrap: wrap;
  }

  .specs-tab {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
  }

  .specs-table th,
  .specs-table td {
    padding: var(--spacing-sm);
    font-size: 0.875rem;
  }

  .specs-table th {
    width: 35%;
  }
}

/* 超小屏幕 (< 480px) */
@media (max-width: 479px) {
  .detail-hero-text h1 {
    font-size: 1.5rem;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .case-card-stats {
    flex-direction: column;
    align-items: center;
  }

  .specs-table th,
  .specs-table td {
    display: block;
    width: 100%;
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .specs-table th {
    background: transparent;
    font-weight: 600;
    color: var(--primary-dark);
    padding-top: var(--spacing-md);
  }
}