/* roulang page: index */
:root {
      --bg-main: #060B18;
      --bg-sec: #0B1528;
      --bg-card: rgba(16, 31, 60, 0.7);
      --bg-card-hover: rgba(22, 42, 80, 0.85);
      --primary: #0066FF;
      --primary-light: #00E5FF;
      --accent-green: #00F298;
      --accent-purple: #7B2CBF;
      --text-main: #FFFFFF;
      --text-muted: #94A3B8;
      --text-light: #CBD5E1;
      --border-color: rgba(0, 229, 255, 0.15);
      --border-glow: rgba(0, 102, 255, 0.4);
      --shadow-glow: 0 0 25px rgba(0, 102, 255, 0.25);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
    }

    body {
      line-height: 1.6;
      overflow-x: hidden;
      background-color: var(--bg-main);
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部通知栏与双行导航 */
    .top-bar {
      background: rgba(6, 11, 24, 0.95);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 13px;
      color: var(--text-muted);
      padding: 6px 0;
    }

    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--accent-green);
    }

    .status-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-green);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% { opacity: 0.4; }
      50% { opacity: 1; }
      100% { opacity: 0.4; }
    }

    .main-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 21, 40, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      padding: 16px 0;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .logo {
      font-size: 22px;
      font-weight: 800;
      background: linear-gradient(135deg, #FFFFFF, var(--primary-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .logo i {
      color: var(--primary-light);
      -webkit-text-fill-color: var(--primary-light);
    }

    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
      align-items: center;
    }

    .nav-links a {
      color: var(--text-light);
      font-size: 15px;
      font-weight: 500;
      position: relative;
    }

    .nav-links a:hover, .nav-links a.active {
      color: var(--primary-light);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary-light);
      transition: var(--transition);
    }

    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 26px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), #004ecc);
      color: #FFFFFF;
      box-shadow: 0 0 20px rgba(0, 102, 255, 0.45);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #1a75ff, var(--primary));
      transform: translateY(-2px);
      box-shadow: 0 0 25px rgba(0, 102, 255, 0.65);
    }

    .btn-outline {
      background: rgba(16, 31, 60, 0.5);
      border-color: var(--border-color);
      color: var(--text-light);
    }

    .btn-outline:hover {
      background: rgba(0, 229, 255, 0.1);
      border-color: var(--primary-light);
      color: #FFFFFF;
      transform: translateY(-2px);
    }

    .menu-toggle {
      display: none;
      font-size: 24px;
      color: var(--text-light);
      cursor: pointer;
    }

    /* 板块通用样式 */
    section {
      padding: 90px 0;
      position: relative;
    }

    .section-dark {
      background-color: var(--bg-sec);
      border-top: 1px solid rgba(255, 255, 255, 0.03);
      border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    }

    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(0, 229, 255, 0.1);
      border: 1px solid var(--border-color);
      color: var(--primary-light);
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      margin-bottom: 16px;
      color: #FFFFFF;
    }

    .section-desc {
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
      font-size: 16px;
    }

    .card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: var(--transition);
    }

    .card:hover {
      background: var(--bg-card-hover);
      border-color: rgba(0, 229, 255, 0.35);
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    /* 1. Hero 工业参数首屏 */
    #hero {
      padding: 100px 0 80px 0;
      background: linear-gradient(180deg, rgba(6, 11, 24, 0.7) 0%, rgba(6, 11, 24, 0.95) 100%), url('/assets/images/b37a86d54926e4c9.webp') center/cover no-repeat;
      position: relative;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto 50px auto;
    }

    .hero-title {
      font-size: 46px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #00E5FF, #0066FF);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-light);
      margin-bottom: 36px;
      line-height: 1.7;
    }

    .hero-cta {
      display: flex;
      justify-content: center;
      gap: 20px;
    }

    .hero-metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 50px;
      background: rgba(11, 21, 40, 0.8);
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: var(--radius-md);
    }

    .hero-metric-item {
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
    }

    .hero-metric-item:last-child {
      border-right: none;
    }

    .hero-metric-val {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-light);
      margin-bottom: 4px;
    }

    .hero-metric-label {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 2. 品牌与产品架构介绍区 */
    .about-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 26px;
      margin-bottom: 18px;
      color: #FFFFFF;
    }

    .about-text p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 15px;
    }

    .tech-specs-list {
      list-style: none;
      margin-top: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .tech-specs-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-light);
    }

    .tech-specs-list i {
      color: var(--accent-green);
    }

    .about-image {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }

    /* 3. 核心功能与优势矩阵区（6卡片） */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .adv-icon {
      width: 50px;
      height: 50px;
      background: rgba(0, 102, 255, 0.15);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      color: var(--primary-light);
      margin-bottom: 20px;
      border: 1px solid rgba(0, 229, 255, 0.2);
    }

    .card h4 {
      font-size: 19px;
      margin-bottom: 12px;
      color: #FFFFFF;
    }

    .card p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.6;
    }

    /* 4. 产线能力与解决方案（3卡片） */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .solution-card {
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .solution-img {
      height: 180px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 20px;
    }

    .solution-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .solution-card h4 {
      font-size: 20px;
      margin-bottom: 12px;
    }

    .solution-features {
      list-style: none;
      margin-top: 16px;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .solution-features li {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .solution-features i {
      color: var(--primary-light);
      font-size: 11px;
    }

    /* 5. 深色实战技术与参数架构 */
    .tech-table-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
    }

    .tech-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .tech-table th, .tech-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 14px;
    }

    .tech-table th {
      background: rgba(0, 102, 255, 0.1);
      color: var(--primary-light);
      font-weight: 600;
    }

    .tech-table tr:last-child td {
      border-bottom: none;
    }

    .tech-table tr:hover {
      background: rgba(255, 255, 255, 0.02);
    }

    .tag-badge {
      display: inline-block;
      padding: 2px 8px;
      background: rgba(0, 242, 152, 0.1);
      color: var(--accent-green);
      border-radius: 4px;
      font-size: 12px;
    }

    /* 6. 实战场景与业务演示 */
    .scenarios-list {
      display: flex;
      flex-direction: column;
      gap: 40px;
    }

    .scenario-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .scenario-item.reverse {
      direction: rtl;
    }

    .scenario-item.reverse .scenario-info {
      direction: ltr;
    }

    .scenario-item.reverse .scenario-img {
      direction: ltr;
    }

    .scenario-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }

    .scenario-info h4 {
      font-size: 24px;
      margin-bottom: 14px;
      color: #FFFFFF;
    }

    .scenario-info p {
      color: var(--text-muted);
      font-size: 15px;
      margin-bottom: 20px;
    }

    /* 7. 标杆案例现场 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .case-card {
      display: flex;
      flex-direction: column;
    }

    .case-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
    }

    .case-tag {
      font-size: 12px;
      color: var(--primary-light);
      background: rgba(0, 102, 255, 0.15);
      padding: 3px 10px;
      border-radius: 4px;
    }

    .case-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 20px;
      background: rgba(6, 11, 24, 0.5);
      padding: 14px;
      border-radius: var(--radius-sm);
    }

    .case-stat-item strong {
      display: block;
      font-size: 20px;
      color: var(--accent-green);
    }

    .case-stat-item span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 8. 拼团与授权价格（3列） */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }

    .pricing-card {
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .pricing-card.popular {
      border-color: var(--primary-light);
      box-shadow: 0 0 30px rgba(0, 229, 255, 0.2);
    }

    .popular-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #060B18;
      font-weight: 700;
      font-size: 11px;
      padding: 4px 10px;
      border-radius: 12px;
      text-transform: uppercase;
    }

    .price-value {
      font-size: 38px;
      font-weight: 800;
      color: #FFFFFF;
      margin: 16px 0 8px 0;
    }

    .price-value span {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 400;
    }

    .price-features {
      list-style: none;
      margin: 24px 0;
      flex-grow: 1;
    }

    .price-features li {
      font-size: 14px;
      color: var(--text-light);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .price-features i {
      color: var(--accent-green);
    }

    /* 9. 交付流程与部署步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-item {
      text-align: center;
      position: relative;
    }

    .process-step-num {
      width: 44px;
      height: 44px;
      background: var(--bg-sec);
      border: 2px solid var(--primary-light);
      color: var(--primary-light);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin: 0 auto 16px auto;
      font-size: 16px;
      box-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
    }

    .process-item h5 {
      font-size: 16px;
      margin-bottom: 8px;
      color: #FFFFFF;
    }

    .process-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 10. 用户口碑与评价墙 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-top: 20px;
    }

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-light);
    }

    .user-meta h6 {
      font-size: 15px;
      color: #FFFFFF;
    }

    .user-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 11. 行业动态与技术资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-date {
      font-size: 12px;
      color: var(--primary-light);
      margin-bottom: 8px;
      display: block;
    }

    .news-card h4 {
      font-size: 17px;
      margin-bottom: 12px;
      line-height: 1.4;
    }

    /* 12. 询盘与测试开通表单 */
    .inquiry-box {
      max-width: 800px;
      margin: 0 auto;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-glow);
    }

    .inquiry-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-group.full {
      grid-column: span 2;
    }

    .form-label {
      display: block;
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      background: rgba(6, 11, 24, 0.8);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary-light);
      box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 页脚 */
    footer {
      background-color: #03060C;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 60px 0 24px 0;
      font-size: 14px;
      color: var(--text-muted);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h5 {
      color: #FFFFFF;
      font-size: 16px;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a:hover {
      color: var(--primary-light);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .advantages-grid, .solutions-grid, .pricing-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-sec);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active { display: flex; }
      .menu-toggle { display: block; }
      .hero-title { font-size: 32px; }
      .hero-metrics-bar { grid-template-columns: repeat(2, 1fr); }
      .hero-metric-item { border-right: none; }
      .about-grid, .scenario-item, .cases-grid { grid-template-columns: 1fr; }
      .scenario-item.reverse { direction: ltr; }
      .advantages-grid, .solutions-grid, .pricing-grid, .reviews-grid, .news-grid, .process-timeline {
        grid-template-columns: 1fr;
      }
      .inquiry-form { grid-template-columns: 1fr; }
      .form-group.full { grid-column: span 1; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    }