/* roulang page: index */
:root {
      --color-primary: #1E232A;
      --color-primary-dark: #111418;
      --color-accent: #FF6B00;
      --color-accent-hover: #E05E00;
      --color-warning: #E59400;
      --color-slate-deep: #0F172A;
      --color-slate-text: #334155;
      --color-slate-muted: #64748B;
      --color-surface-light: #F8FAFC;
      --color-surface-pure: #FFFFFF;
      --color-border: #E2E8F0;
      --color-border-dark: #2A323D;
      --radius-sm: 4px;
      --radius-md: 8px;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
      --shadow-lg: 0 12px 28px rgba(0,0,0,0.12);
      --max-width: 1240px;
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-family);
      color: var(--color-slate-text);
      background-color: var(--color-surface-light);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font-family: inherit;
    }
    .container {
      width: 100%;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .section-wrap {
      padding-top: 80px;
      padding-bottom: 80px;
      position: relative;
    }
    .section-dark {
      background-color: var(--color-primary-dark);
      color: #E2E8F0;
    }
    .section-pure {
      background-color: var(--color-surface-pure);
    }
    .section-gray {
      background-color: #F1F5F9;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 50px auto;
    }
    .badge-tag {
      display: inline-block;
      padding: 4px 12px;
      background-color: rgba(255, 107, 0, 0.12);
      color: var(--color-accent);
      border-left: 3px solid var(--color-accent);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
      border-radius: var(--radius-sm);
    }
    .badge-tag-dark {
      background-color: rgba(255, 107, 0, 0.2);
      color: #FFA04D;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--color-slate-deep);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--color-slate-muted);
      line-height: 1.7;
    }
    .section-dark .section-subtitle {
      color: #94A3B8;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 700;
      font-size: 15px;
      padding: 12px 26px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
      white-space: nowrap;
    }
    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(255, 107, 0, 0.28);
    }
    .btn:active {
      transform: translateY(0);
    }
    .btn-primary {
      background-color: var(--color-accent);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background-color: var(--color-accent-hover);
    }
    .btn-secondary {
      background-color: transparent;
      color: #FFFFFF;
      border-color: #475569;
    }
    .btn-secondary:hover {
      background-color: rgba(255, 255, 255, 0.08);
      border-color: #94A3B8;
    }
    .btn-outline {
      background-color: transparent;
      color: var(--color-accent);
      border-color: var(--color-accent);
    }
    .btn-outline:hover {
      background-color: var(--color-accent);
      color: #FFFFFF;
    }

    /* 顶部信息栏 */
    .topbar {
      background-color: var(--color-primary-dark);
      color: #94A3B8;
      font-size: 13px;
      border-bottom: 1px solid var(--color-border-dark);
      line-height: 38px;
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
    }
    .topbar-left, .topbar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .topbar-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .topbar-item b {
      color: var(--color-accent);
    }

    /* 主导航 */
    .navbar-sticky {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(30, 35, 42, 0.96);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      font-size: 22px;
      color: #FFFFFF;
      letter-spacing: 0.5px;
    }
    .nav-brand-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--color-accent), #FF9800);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 20px;
      box-shadow: 0 4px 10px rgba(255, 107, 0, 0.4);
    }
    .nav-menu {
      display: flex;
      list-style: none;
      align-items: center;
      gap: 24px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: #CBD5E1;
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--color-accent);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--color-accent);
      transition: width 0.2s ease;
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-cta {
      display: flex;
      align-items: center;
    }
    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid #475569;
      color: #FFFFFF;
      padding: 8px 12px;
      font-size: 18px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    /* 板块一：首屏 Hero */
    .hero-section {
      background-color: var(--color-primary-dark);
      background-image: linear-gradient(to right, rgba(17, 20, 24, 0.95) 45%, rgba(17, 20, 24, 0.7)), url('/assets/images/9c1142533fe8aa62.webp');
      background-size: cover;
      background-position: center;
      color: #FFFFFF;
      padding: 80px 0 60px 0;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .hero-h1 span {
      color: var(--color-accent);
    }
    .hero-desc {
      font-size: 16px;
      line-height: 1.75;
      color: #CBD5E1;
      margin-bottom: 30px;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 32px;
    }
    .hero-badge-item {
      display: flex;
      align-items: center;
      gap: 8px;
      background-color: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 8px 14px;
      font-size: 14px;
      border-radius: var(--radius-sm);
      color: #F1F5F9;
    }
    .hero-badge-item svg {
      color: var(--color-accent);
      flex-shrink: 0;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-showcase {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .hero-showcase img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .showcase-overlay {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 20px;
      background: linear-gradient(to top, rgba(15, 23, 42, 0.92), transparent);
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
    }
    .showcase-tag {
      background-color: var(--color-accent);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 6px;
    }
    .showcase-title {
      font-size: 16px;
      font-weight: 700;
      color: #FFFFFF;
    }

    /* 首屏数据指标卡片 */
    .metric-strip {
      margin-top: 50px;
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-cell {
      background-color: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px;
      border-radius: var(--radius-sm);
      border-bottom: 3px solid var(--color-accent);
    }
    .metric-num {
      font-size: 38px;
      font-weight: 900;
      color: #FFFFFF;
      line-height: 1;
      margin-bottom: 8px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .metric-num span {
      font-size: 16px;
      color: var(--color-accent);
      font-weight: 700;
    }
    .metric-name {
      font-size: 14px;
      color: #94A3B8;
    }

    /* 板块二：工位与车间实力 */
    .workshop-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .workshop-visual {
      position: relative;
    }
    .workshop-visual img {
      width: 100%;
      height: 420px;
      object-fit: cover;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
    }
    .visual-stat-card {
      position: absolute;
      bottom: -20px;
      right: 20px;
      background-color: var(--color-primary);
      color: #FFFFFF;
      padding: 18px 24px;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--color-accent);
      box-shadow: var(--shadow-lg);
    }
    .visual-stat-card b {
      display: block;
      font-size: 24px;
      color: var(--color-accent);
    }
    .workshop-content h3 {
      font-size: 28px;
      font-weight: 800;
      color: var(--color-slate-deep);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .workshop-content p {
      font-size: 15px;
      color: var(--color-slate-text);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .facility-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 28px;
    }
    .facility-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      font-weight: 600;
      color: var(--color-slate-deep);
    }
    .facility-item svg {
      color: var(--color-accent);
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* 板块三：服务矩阵 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background-color: var(--color-surface-pure);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--color-accent);
    }
    .service-thumb {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .service-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .service-card:hover .service-thumb img {
      transform: scale(1.05);
    }
    .service-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background-color: rgba(17, 20, 24, 0.85);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--color-accent);
    }
    .service-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .service-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--color-slate-deep);
      margin-bottom: 12px;
    }
    .service-intro {
      font-size: 14px;
      color: var(--color-slate-muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .service-specs {
      list-style: none;
      margin-bottom: 20px;
      padding-top: 14px;
      border-top: 1px dashed var(--color-border);
    }
    .service-specs li {
      font-size: 13px;
      color: var(--color-slate-text);
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 8px;
    }
    .service-specs li svg {
      color: var(--color-accent);
      flex-shrink: 0;
    }
    .service-foot {
      margin-top: auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 14px;
      border-top: 1px solid var(--color-border);
    }
    .service-price {
      font-size: 13px;
      color: var(--color-slate-muted);
    }
    .service-price b {
      color: var(--color-accent);
      font-size: 18px;
    }

    /* 板块四：六大保障优势 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background-color: var(--color-surface-pure);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      padding: 28px;
      transition: all 0.25s ease;
      position: relative;
    }
    .adv-card:hover {
      border-color: var(--color-accent);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .adv-icon-box {
      width: 52px;
      height: 52px;
      background-color: #FFF7ED;
      color: var(--color-accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
    }
    .adv-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--color-slate-deep);
      margin-bottom: 10px;
    }
    .adv-text {
      font-size: 14px;
      color: var(--color-slate-muted);
      line-height: 1.65;
    }

    /* 板块五：深色疑难故障专修案例 */
    .case-box {
      background-color: #171C24;
      border: 1px solid var(--color-border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .case-nav {
      display: flex;
      background-color: var(--color-primary-dark);
      border-bottom: 1px solid var(--color-border-dark);
      overflow-x: auto;
    }
    .case-tab-btn {
      padding: 16px 28px;
      background: transparent;
      border: none;
      color: #94A3B8;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      border-bottom: 2px solid transparent;
      white-space: nowrap;
      transition: all 0.2s ease;
    }
    .case-tab-btn.active, .case-tab-btn:hover {
      color: #FFFFFF;
      border-bottom-color: var(--color-accent);
      background-color: rgba(255, 107, 0, 0.05);
    }
    .case-content-panel {
      padding: 36px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .case-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 20px;
    }
    .case-meta-tag {
      font-size: 12px;
      background-color: #232B36;
      color: #E2E8F0;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      border-left: 2px solid var(--color-accent);
    }
    .case-flow {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 20px;
    }
    .case-flow-step {
      background-color: #1F2630;
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      border-left: 3px solid #3B82F6;
    }
    .case-flow-step.danger {
      border-left-color: #EF4444;
    }
    .case-flow-step.success {
      border-left-color: #10B981;
    }
    .case-flow-title {
      font-size: 13px;
      font-weight: 700;
      color: #94A3B8;
      margin-bottom: 4px;
    }
    .case-flow-desc {
      font-size: 14px;
      color: #E2E8F0;
      line-height: 1.5;
    }
    .case-visual-wrap {
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--color-border-dark);
      position: relative;
    }
    .case-visual-wrap img {
      width: 100%;
      height: 340px;
      object-fit: cover;
    }

    /* 板块六：车主维修全流程结果对比看板 */
    .compare-container {
      background-color: var(--color-surface-pure);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--color-border);
      overflow: hidden;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 20px 24px;
      border-bottom: 1px solid var(--color-border);
      font-size: 15px;
    }
    .compare-table th {
      background-color: #F8FAFC;
      font-weight: 800;
      color: var(--color-slate-deep);
    }
    .compare-table th.highlight-col {
      background-color: #FFF7ED;
      color: var(--color-accent);
      border-top: 3px solid var(--color-accent);
    }
    .compare-table td.highlight-cell {
      background-color: rgba(255, 107, 0, 0.03);
      font-weight: 600;
      color: var(--color-slate-deep);
    }
    .status-bad {
      color: #DC2626;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-good {
      color: #059669;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块七：标准化服务交付里程碑时间轴 */
    .timeline-wrapper {
      position: relative;
      margin: 40px 0 20px 0;
    }
    .timeline-track {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline-track::before {
      content: '';
      position: absolute;
      top: 24px;
      left: 30px;
      right: 30px;
      height: 2px;
      background: linear-gradient(to right, var(--color-accent), #CBD5E1);
      z-index: 1;
    }
    .timeline-node {
      position: relative;
      z-index: 2;
      text-align: center;
    }
    .timeline-badge {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background-color: var(--color-surface-pure);
      border: 3px solid var(--color-accent);
      color: var(--color-accent);
      font-weight: 800;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      box-shadow: 0 4px 10px rgba(0,0,0,0.06);
    }
    .timeline-step-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--color-slate-deep);
      margin-bottom: 6px;
    }
    .timeline-step-desc {
      font-size: 12px;
      color: var(--color-slate-muted);
      line-height: 1.5;
    }

    /* 板块八：真实车主送修故事 */
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .story-card {
      background-color: var(--color-surface-pure);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .story-card-top {
      height: 200px;
      position: relative;
    }
    .story-card-top img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-card-body {
      padding: 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .story-header {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      margin-bottom: 12px;
    }
    .story-title {
      font-size: 18px;
      font-weight: 800;
      color: var(--color-slate-deep);
    }
    .story-car {
      font-size: 13px;
      color: var(--color-slate-muted);
      background-color: #F1F5F9;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
    }
    .story-text {
      font-size: 14px;
      color: var(--color-slate-text);
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .story-quote {
      background-color: #FFFBEB;
      border-left: 3px solid #F59E0B;
      padding: 12px 16px;
      font-size: 13px;
      color: #92400E;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-top: auto;
    }

    /* 板块九：口碑评价网格 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background-color: var(--color-surface-pure);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: #F59E0B;
      font-size: 16px;
      margin-bottom: 12px;
      display: flex;
      gap: 3px;
    }
    .review-content {
      font-size: 14px;
      color: var(--color-slate-text);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .review-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 12px;
      border-top: 1px solid #F1F5F9;
    }
    .reviewer-name {
      font-weight: 700;
      font-size: 13px;
      color: var(--color-slate-deep);
    }
    .review-tag {
      font-size: 12px;
      color: var(--color-accent);
      background-color: #FFF7ED;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
    }

    /* 板块十：机修与保养常识内嵌资讯 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .insight-card {
      background-color: var(--color-surface-pure);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .insight-pic {
      height: 180px;
    }
    .insight-pic img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 22px;
      flex: 1;
    }
    .insight-date {
      font-size: 12px;
      color: var(--color-slate-muted);
      margin-bottom: 8px;
    }
    .insight-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--color-slate-deep);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-text {
      font-size: 13px;
      color: var(--color-slate-muted);
      line-height: 1.65;
    }

    /* 板块十一：常见问题 FAQ */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background-color: var(--color-surface-pure);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.2s ease;
    }
    .faq-item:hover {
      border-color: var(--color-accent);
    }
    .faq-header {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--color-slate-deep);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      background-color: #FFFFFF;
    }
    .faq-icon {
      font-size: 20px;
      color: var(--color-accent);
      transition: transform 0.25s ease;
    }
    .faq-content {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--color-slate-text);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-content {
      display: block;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 板块十二：工况预约与精准报价 CTA */
    .booking-card {
      background: linear-gradient(135deg, #1A1F26 0%, #111418 100%);
      border: 1px solid var(--color-border-dark);
      border-radius: var(--radius-md);
      padding: 48px;
      color: #FFFFFF;
      box-shadow: var(--shadow-lg);
    }
    .booking-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .booking-form-box h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 12px;
      color: #FFFFFF;
    }
    .booking-form-box p {
      font-size: 14px;
      color: #94A3B8;
      margin-bottom: 24px;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      color: #CBD5E1;
      font-weight: 600;
    }
    .form-control {
      background-color: #242B35;
      border: 1px solid #333F4E;
      border-radius: var(--radius-sm);
      padding: 12px 14px;
      color: #FFFFFF;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--color-accent);
      box-shadow: 0 0 0 2px rgba(255, 107, 0, 0.2);
    }
    .booking-direct {
      background-color: #212832;
      border-radius: var(--radius-sm);
      padding: 30px;
      border: 1px dashed #3E4B5B;
      text-align: center;
    }
    .direct-phone-label {
      font-size: 14px;
      color: #94A3B8;
      margin-bottom: 8px;
    }
    .direct-phone-val {
      font-size: 32px;
      font-weight: 900;
      color: var(--color-accent);
      line-height: 1.2;
      margin-bottom: 12px;
    }
    .direct-work-time {
      font-size: 13px;
      color: #CBD5E1;
      line-height: 1.6;
    }

    /* 页脚 */
    .site-footer {
      background-color: #0D1014;
      color: #94A3B8;
      padding-top: 60px;
      padding-bottom: 30px;
      border-top: 1px solid #1E252E;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.9fr 1.2fr 0.9fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand-title {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .footer-desc {
      font-size: 13px;
      line-height: 1.7;
      color: #94A3B8;
      margin-bottom: 16px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-col h4::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background-color: var(--color-accent);
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      font-size: 13px;
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: var(--color-accent);
      padding-left: 4px;
    }
    .footer-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 13px;
    }
    .footer-contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      line-height: 1.6;
    }
    .footer-contact-list svg {
      color: var(--color-accent);
      margin-top: 3px;
      flex-shrink: 0;
    }
    .footer-bottom {
      border-top: 1px solid #1A2028;
      padding-top: 24px;
      text-align: center;
      font-size: 12px;
      color: #64748B;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .services-grid, .advantages-grid, .reviews-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-track {
        grid-template-columns: repeat(4, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background-color: var(--color-primary-dark);
        flex-direction: column;
        padding: 24px;
        gap: 18px;
        border-bottom: 2px solid var(--color-accent);
      }
      .nav-menu.open {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .hero-grid, .workshop-grid, .case-content-panel, .stories-grid, .booking-grid {
        grid-template-columns: 1fr;
      }
      .services-grid, .advantages-grid, .reviews-grid, .insights-grid {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 30px;
      }
      .section-title {
        font-size: 24px;
      }
      .timeline-track {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .timeline-track::before {
        display: none;
      }
      .timeline-node {
        display: flex;
        text-align: left;
        align-items: center;
        gap: 16px;
      }
      .timeline-badge {
        margin: 0;
        flex-shrink: 0;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .booking-card {
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }