/* roulang page: index */
:root {
      --primary: #0F2B48;
      --primary-light: #1A4B78;
      --accent: #FF6B00;
      --accent-hover: #FF8533;
      --dark-bg: #0A1929;
      --dark-card: #13273D;
      --light-bg: #F4F6F9;
      --white: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border-color: rgba(226, 232, 240, 0.85);
      --border-dark: rgba(255, 255, 255, 0.08);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-xl: 24px;
      --shadow-sm: 0 4px 12px rgba(15, 43, 72, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 43, 72, 0.08);
      --shadow-lg: 0 20px 35px -10px rgba(15, 43, 72, 0.12);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--white);
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    ul, ol {
      list-style: none;
    }

    button, input, textarea, select {
      font-family: inherit;
      font-size: 1rem;
      outline: none;
      border: none;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部通栏 */
    .topbar {
      background-color: var(--dark-bg);
      color: var(--text-light);
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid var(--border-dark);
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .topbar-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .topbar-item b {
      color: #38BDF8;
    }

    /* 主导航 */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }
    .navbar-content {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--accent) 0%, #E05600 100%);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 20px;
      box-shadow: 0 4px 10px rgba(255, 107, 0, 0.35);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: #334155;
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--accent);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
      color: #fff;
      padding: 10px 22px;
      border-radius: 50px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 14px rgba(255, 107, 0, 0.28);
      cursor: pointer;
    }
    .nav-cta:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(255, 107, 0, 0.38);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--primary);
      cursor: pointer;
    }

    /* 通用组件 */
    .section-spacing {
      padding: 90px 0;
    }
    .section-spacing-sm {
      padding: 60px 0;
    }
    .bg-light {
      background-color: var(--light-bg);
    }
    .bg-dark {
      background-color: var(--dark-bg);
      color: #fff;
    }
    .section-head {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px;
    }
    .badge-sub {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(255, 107, 0, 0.1);
      color: var(--accent);
      border: 1px solid rgba(255, 107, 0, 0.25);
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }
    .badge-sub.dark {
      background: rgba(56, 189, 248, 0.12);
      border-color: rgba(56, 189, 248, 0.3);
      color: #38BDF8;
    }
    .section-head h2 {
      font-size: 34px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .bg-dark .section-head h2 {
      color: #FFFFFF;
    }
    .section-head p {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .bg-dark .section-head p {
      color: var(--text-light);
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
      color: #fff;
      box-shadow: 0 6px 18px rgba(255, 107, 0, 0.28);
    }
    .btn-primary:hover {
      box-shadow: 0 8px 22px rgba(255, 107, 0, 0.38);
      transform: translateY(-2px);
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: transparent;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
    }
    .btn-white {
      background: #fff;
      color: var(--primary);
      box-shadow: 0 4px 15px rgba(0,0,0,0.06);
    }
    .btn-white:hover {
      background: #F8FAFC;
      transform: translateY(-2px);
    }

    /* 板块一：首屏 Hero (无大图首屏，图标矩阵 + 状态条 + 短标题) */
    .hero-section {
      background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
      padding: 70px 0 80px;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }
    .hero-top-status {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 6px 16px;
      border-radius: 40px;
      font-size: 13px;
      color: #334155;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10B981;
      position: relative;
    }
    .status-dot::after {
      content: '';
      position: absolute;
      inset: -3px;
      border-radius: 50%;
      background: rgba(16, 185, 129, 0.35);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { transform: scale(1); opacity: 0.8; }
      50% { transform: scale(1.6); opacity: 0; }
    }
    .hero-header-box {
      text-align: center;
      max-width: 980px;
      margin: 0 auto;
    }
    .hero-title {
      font-size: 44px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }
    .hero-title span {
      background: linear-gradient(135deg, var(--accent) 0%, #D95500 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.75;
      max-width: 820px;
      margin: 0 auto 32px;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }
    /* 图标矩阵 */
    .hero-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 10px;
    }
    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: left;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .matrix-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--accent);
      opacity: 0;
      transition: var(--transition);
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 107, 0, 0.4);
    }
    .matrix-card:hover::before {
      opacity: 1;
    }
    .matrix-icon-wrap {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(15, 43, 72, 0.05);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--primary);
      margin-bottom: 14px;
    }
    .matrix-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .matrix-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块二：资料目录与技术规程速查（#hero-catalog） */
    .catalog-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .catalog-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .catalog-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
    }
    .catalog-tag {
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: var(--accent);
      background: rgba(255, 107, 0, 0.1);
      padding: 4px 10px;
      border-radius: 4px;
      align-self: flex-start;
      margin-bottom: 16px;
    }
    .catalog-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .catalog-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .catalog-meta {
      border-top: 1px dashed var(--border-color);
      padding-top: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: var(--text-light);
    }
    .catalog-action {
      color: var(--accent);
      font-weight: 600;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块三：核心价值点三连（#features） */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 36px 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(255, 107, 0, 0.3);
    }
    .feature-badge-num {
      position: absolute;
      top: 28px;
      right: 28px;
      font-size: 32px;
      font-weight: 900;
      color: #E2E8F0;
      line-height: 1;
    }
    .feature-icon-box {
      width: 54px;
      height: 54px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, rgba(15, 43, 72, 0.08) 0%, rgba(255, 107, 0, 0.12) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: var(--primary);
      margin-bottom: 24px;
    }
    .feature-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 14px;
    }
    .feature-p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .feature-checklist {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 14px;
      color: #475569;
    }
    .feature-checklist li {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .feature-checklist li::before {
      content: '✓';
      color: var(--accent);
      font-weight: 800;
    }

    /* 板块四：工艺技术标准与参数架构（#about） */
    .about-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .about-image-card {
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .about-image-card img {
      width: 100%;
      height: 480px;
      object-fit: cover;
    }
    .floating-data-chip {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(15, 43, 72, 0.88);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      color: #FFFFFF;
      display: flex;
      justify-content: space-around;
      text-align: center;
    }
    .chip-item b {
      font-size: 20px;
      color: var(--accent);
      display: block;
    }
    .chip-item span {
      font-size: 12px;
      color: #94A3B8;
    }
    .about-text-content h3 {
      font-size: 28px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.35;
      margin-bottom: 20px;
    }
    .about-text-content p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .spec-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }
    .spec-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
    }
    .spec-box-label {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 4px;
    }
    .spec-box-val {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
    }

    /* 板块五：核心优势矩阵6卡网格（#strengths） */
    .strengths-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .strength-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .strength-item:hover {
      border-color: var(--accent);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .strength-num {
      font-size: 14px;
      font-weight: 800;
      color: var(--accent);
      background: rgba(255, 107, 0, 0.08);
      display: inline-block;
      padding: 2px 10px;
      border-radius: 20px;
      margin-bottom: 16px;
    }
    .strength-item h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .strength-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块六：热门产品矩阵（#products） */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .product-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-5px);
      border-color: rgba(255, 107, 0, 0.35);
    }
    .product-thumb {
      height: 240px;
      overflow: hidden;
      position: relative;
      background: #E2E8F0;
    }
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }
    .product-card:hover .product-thumb img {
      transform: scale(1.05);
    }
    .product-badge {
      position: absolute;
      top: 14px;
      right: 14px;
      background: rgba(15, 43, 72, 0.85);
      backdrop-filter: blur(6px);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 20px;
    }
    .product-body {
      padding: 28px 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .product-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .product-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 22px;
    }
    .param-pill {
      font-size: 12px;
      background: var(--light-bg);
      color: #334155;
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid var(--border-color);
      font-weight: 500;
    }
    .product-foot {
      margin-top: auto;
      border-top: 1px solid var(--border-color);
      padding-top: 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .product-foot .price-tag {
      font-size: 13px;
      color: var(--text-light);
    }
    .product-foot .price-tag b {
      color: var(--primary);
      fontsize: 15px;
    }

    /* 板块七：场景演示（#scenarios） */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .scenario-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
    }
    .scenario-img-wrap {
      height: 180px;
      overflow: hidden;
      position: relative;
    }
    .scenario-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .scenario-card:hover .scenario-img-wrap img {
      transform: scale(1.06);
    }
    .scenario-content {
      padding: 22px 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .scenario-tag {
      font-size: 12px;
      color: var(--accent);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .scenario-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .scenario-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 14px;
    }
    .scenario-stat {
      margin-top: auto;
      background: var(--light-bg);
      border-radius: var(--radius-sm);
      padding: 10px 12px;
      font-size: 12px;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .scenario-stat b {
      color: var(--accent);
      font-size: 14px;
    }

    /* 板块八：深色工业智能调度体系与数字孪生案例区（#dark-cases） */
    .dark-cases-container {
      background: linear-gradient(180deg, #0A1929 0%, #0F2B48 100%);
      border-radius: var(--radius-xl);
      padding: 60px 48px;
      border: 1px solid var(--border-dark);
      box-shadow: var(--shadow-lg);
    }
    .dispatch-split {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .dispatch-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255,255,255,0.12);
      box-shadow: 0 16px 36px rgba(0,0,0,0.4);
    }
    .dispatch-visual img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .dispatch-visual-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 50%, rgba(10, 25, 41, 0.9) 100%);
      display: flex;
      align-items: flex-end;
      padding: 24px;
    }
    .dispatch-visual-overlay p {
      font-size: 13px;
      color: #94A3B8;
      letter-spacing: 0.5px;
    }
    .dispatch-content h3 {
      font-size: 28px;
      font-weight: 700;
      color: #FFFFFF;
      line-height: 1.35;
      margin-bottom: 18px;
    }
    .dispatch-content p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .dispatch-points {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .dispatch-point-item {
      display: flex;
      gap: 14px;
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.06);
      padding: 16px 18px;
      border-radius: var(--radius-md);
    }
    .point-icon {
      width: 32px;
      height: 32px;
      border-radius: 6px;
      background: rgba(56, 189, 248, 0.15);
      color: #38BDF8;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-weight: 700;
    }
    .point-text h5 {
      font-size: 15px;
      color: #FFFFFF;
      margin-bottom: 4px;
    }
    .point-text span {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.5;
    }

    /* 板块九：标杆客户现场用户故事与落地成果（#case-studies） */
    .case-card-large {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .case-img-side {
      height: 100%;
      min-height: 420px;
      position: relative;
    }
    .case-img-side img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content-side {
      padding: 48px 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-badge-type {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
      background: rgba(255, 107, 0, 0.1);
      padding: 4px 12px;
      border-radius: 4px;
      align-self: flex-start;
      margin-bottom: 16px;
    }
    .case-content-side h3 {
      font-size: 26px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .case-content-side p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .case-roi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }
    .roi-item b {
      font-size: 24px;
      font-weight: 800;
      color: var(--accent);
      display: block;
      line-height: 1.2;
    }
    .roi-item span {
      font-size: 13px;
      color: var(--text-light);
    }

    /* 板块十：全流程运行关键数据统计条（#metrics） */
    .metrics-band {
      background: linear-gradient(135deg, var(--primary) 0%, #0A1929 100%);
      color: #fff;
      padding: 60px 0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-cell {
      padding: 0 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    .metric-cell:last-child {
      border-right: none;
    }
    .metric-num {
      font-size: 42px;
      font-weight: 900;
      color: #FFFFFF;
      line-height: 1.1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-num sup {
      font-size: 22px;
      color: var(--accent);
      margin-left: 2px;
    }
    .metric-name {
      font-size: 15px;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 板块十一：行业客户评价与信誉背书（#testimonials） */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
      position: relative;
    }
    .testi-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: rgba(15, 43, 72, 0.2);
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 15px;
      letter-spacing: 2px;
      margin-bottom: 16px;
    }
    .testi-quote {
      font-size: 15px;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: normal;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--light-bg);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      border: 1px solid var(--border-color);
    }
    .author-info h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 板块十二：搬运机器人前沿资讯与应用指南（#news） */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
      transform: translateY(-3px);
    }
    .news-date {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 12px;
    }
    .news-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.45;
      margin-bottom: 12px;
    }
    .news-excerpt {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .news-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块十三：常见选型与异议拆解手风琴（#faq） */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .faq-header {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 16px;
      color: var(--primary);
      user-select: none;
    }
    .faq-header:hover {
      color: var(--accent);
    }
    .faq-icon {
      font-size: 20px;
      color: var(--text-light);
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--accent);
    }
    .faq-body {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }
    .faq-item.active .faq-body {
      padding: 0 24px 22px 24px;
      max-height: 300px;
    }

    /* 意向咨询与方案获取表单（#contact） */
    .contact-card-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 50px 40px;
      box-shadow: var(--shadow-lg);
      max-width: 900px;
      margin: 0 auto;
    }
    .contact-form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 28px;
    }
    .form-group-full {
      grid-column: 1 / -1;
    }
    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
      display: block;
    }
    .form-control {
      width: 100%;
      border: 1px solid var(--border-color);
      background: var(--light-bg);
      padding: 13px 16px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--accent);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 服务保障横条（#guarantee） */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .guarantee-icon {
      font-size: 26px;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .guarantee-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .guarantee-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 页脚 Footer */
    .site-footer {
      background-color: var(--dark-bg);
      color: var(--text-light);
      padding: 70px 0 30px;
      border-top: 1px solid var(--border-dark);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-logo {
      font-size: 22px;
      font-weight: 800;
      color: #FFFFFF;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }
    .footer-p {
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 20px;
      font-size: 13px;
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 10px;
    }
    .footer-title::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--accent);
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-link {
      color: #94A3B8;
      transition: var(--transition);
    }
    .footer-link:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-contact-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      color: #94A3B8;
      font-size: 13px;
    }
    .footer-contact-list b {
      color: #E2E8F0;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-dark);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 12px;
      color: #64748B;
    }

    /* 底部固定转化条 */
    .sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 43, 72, 0.94);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255,255,255,0.12);
      z-index: 990;
      padding: 12px 0;
      box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
      transition: transform 0.3s ease;
    }
    .sticky-bar.hide {
      transform: translateY(100%);
    }
    .sticky-content {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .sticky-info {
      display: flex;
      align-items: center;
      gap: 16px;
      color: #FFFFFF;
    }
    .sticky-hotline {
      font-size: 18px;
      font-weight: 800;
      color: var(--accent);
    }
    .sticky-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .sticky-close-btn {
      background: none;
      border: none;
      color: #94A3B8;
      cursor: pointer;
      font-size: 18px;
      padding: 4px;
    }

    /* 移动端与平板响应式断点 */
    @media (max-width: 1024px) {
      .hero-matrix {
        grid-template-columns: repeat(2, 1fr);
      }
      .catalog-grid, .features-grid, .strengths-grid, .products-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .metric-cell:nth-child(2) {
        border-right: none;
      }
      .dispatch-split, .case-card-large, .about-split {
        grid-template-columns: 1fr;
      }
      .case-img-side {
        min-height: 300px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .navbar-content {
        height: 64px;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        gap: 16px;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .hero-title {
        font-size: 32px;
      }
      .section-head h2 {
        font-size: 26px;
      }
      .hero-matrix, .catalog-grid, .features-grid, .strengths-grid, .products-grid, .scenarios-grid, .testimonials-grid, .news-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .contact-form-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .case-roi-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .metric-cell {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 20px;
      }
      .metric-cell:last-child {
        border-bottom: none;
      }
      .dark-cases-container {
        padding: 36px 20px;
      }
      .sticky-info {
        display: none;
      }
      .sticky-content {
        justify-content: center;
      }
    }