/* roulang page: index */
:root {
      --primary: #00D084;
      --primary-hover: #00b371;
      --dark-navy: #0B132B;
      --graphite: #1C2541;
      --track-gray: #F4F7F6;
      --alert-orange: #FF6B35;
      --text-main: #2C3E50;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --white: #FFFFFF;
      --radius: 10px;
      --shadow-sm: 0 4px 12px rgba(11, 19, 43, 0.04);
      --shadow-md: 0 10px 30px rgba(11, 19, 43, 0.08);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * { box-sizing: border-box; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-main);
      background-color: var(--white);
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }

    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    p { margin-bottom: 1.25rem; }
    h1, h2, h3, h4 { color: var(--dark-navy); font-weight: 700; line-height: 1.35; margin-top: 0; }
    img { max-width: 100%; height: auto; display: block; border-radius: 8px; }

    /* 顶部双行导航系统 */
    .top-bar-notice {
      height: 36px;
      background: var(--dark-navy);
      color: #94A3B8;
      font-size: 13px;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-bar-notice a { color: #94A3B8; }
    .top-bar-notice a:hover { color: var(--primary); }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
    }

    .main-nav-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(10px);
      box-shadow: 0 2px 15px rgba(0,0,0,0.05);
      height: 76px;
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1rem;
    }
    .brand-logo {
      font-size: 22px;
      font-weight: 800;
      color: var(--dark-navy);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .brand-logo i {
      color: var(--primary);
      font-size: 24px;
    }

    /* 图标网格导航 */
    .icon-nav-list {
      display: flex;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 1.5rem;
    }
    .icon-nav-item a {
      display: flex;
      flex-direction: column;
      align-items: center;
      font-size: 13px;
      font-weight: 600;
      color: var(--graphite);
      padding: 6px 10px;
      border-radius: 6px;
    }
    .icon-nav-item a i {
      font-size: 17px;
      margin-bottom: 3px;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .icon-nav-item a:hover {
      color: var(--primary-hover);
      background: var(--track-gray);
    }
    .icon-nav-item a:hover i {
      color: var(--primary);
      transform: translateY(-2px);
    }
    .nav-cta-btn {
      background: var(--primary);
      color: var(--white) !important;
      padding: 8px 18px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 14px;
      box-shadow: 0 4px 12px rgba(0, 208, 132, 0.3);
    }
    .nav-cta-btn:hover {
      background: var(--primary-hover);
      color: var(--white);
      transform: translateY(-1px);
    }

    /* 通用板块规范 */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-gray {
      background-color: var(--track-gray);
    }
    .section-dark {
      background-color: var(--dark-navy);
      color: var(--white);
    }
    .section-dark h2, .section-dark h3 {
      color: var(--white);
    }
    .section-title-wrap {
      margin-bottom: 45px;
      text-align: center;
    }
    .section-subtitle {
      color: var(--primary);
      font-size: 14px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      display: block;
      margin-bottom: 8px;
    }
    .section-main-title {
      font-size: 32px;
      letter-spacing: -0.5px;
      margin-bottom: 14px;
    }
    .section-desc {
      max-width: 760px;
      margin: 0 auto;
      color: var(--text-muted);
      font-size: 16px;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 按钮组件 */
    .btn-action {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 6px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .btn-action-primary {
      background-color: var(--primary);
      color: var(--white);
      box-shadow: 0 4px 14px rgba(0, 208, 132, 0.3);
    }
    .btn-action-primary:hover {
      background-color: var(--primary-hover);
      color: var(--white);
      transform: translateY(-2px);
    }
    .btn-action-outline {
      background-color: transparent;
      border-color: rgba(255,255,255,0.3);
      color: var(--white);
    }
    .btn-action-outline:hover {
      border-color: var(--primary);
      background-color: rgba(0,208,132,0.1);
      color: var(--primary);
    }

    /* 1. 首屏 Hero 动效区 */
    #hero {
      position: relative;
      min-height: 580px;
      padding: 100px 0 80px;
      background: linear-gradient(135deg, rgba(11,19,43,0.92) 0%, rgba(28,37,65,0.85) 100%), url('/assets/images/ddb67abac8988a07.jpg') center/cover no-repeat;
      display: flex;
      align-items: center;
      color: var(--white);
    }
    .hero-tag {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(0,208,132,0.2);
      border: 1px solid var(--primary);
      border-radius: 20px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .hero-h1 {
      color: var(--white);
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 20px;
    }
    .hero-lead {
      color: #CBD5E1;
      font-size: 17px;
      line-height: 1.8;
      margin-bottom: 30px;
      max-width: 640px;
    }
    .hero-mockup-wrap {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.15);
      backdrop-filter: blur(12px);
      border-radius: 12px;
      padding: 20px;
      box-shadow: var(--shadow-md);
    }

    /* 2. 行业痛点区 */
    .pain-card {
      background: var(--white);
      border-left: 4px solid var(--alert-orange);
      padding: 28px 22px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      height: 100%;
      transition: var(--transition);
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .pain-card i {
      font-size: 28px;
      color: var(--alert-orange);
      margin-bottom: 16px;
    }
    .pain-card h3 {
      font-size: 18px;
      margin-bottom: 10px;
    }
    .pain-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
    }

    /* 3. 架构方案区 */
    .arch-spec-box {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      margin-top: 20px;
      border-top: 3px solid var(--primary);
    }
    .arch-spec-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 14px;
    }
    .arch-spec-item:last-child { margin-bottom: 0; }
    .arch-spec-item i { color: var(--primary); margin-top: 4px; }

    /* 4. 六大核心技术优势 */
    .feature-card {
      background: var(--white);
      padding: 30px 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      height: 100%;
      transition: var(--transition);
    }
    .feature-card:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      background: rgba(0,208,132,0.1);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      color: var(--primary);
      font-size: 22px;
    }

    /* 5. 三大产品矩阵 */
    .product-tier-card {
      background: var(--white);
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 32px 26px;
      height: 100%;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .product-tier-card.featured {
      border-color: var(--primary);
      box-shadow: 0 10px 30px rgba(0, 208, 132, 0.15);
    }
    .popular-ribbon {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--primary);
      color: var(--white);
      font-size: 12px;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 20px;
    }
    .product-tier-card ul {
      list-style: none;
      padding: 0;
      margin: 20px 0 25px;
    }
    .product-tier-card ul li {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .product-tier-card ul li i { color: var(--primary); }

    /* 6. 深色对比理念板块 */
    .dark-glow-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius);
      padding: 30px;
    }

    /* 7. 客户故事板块 */
    .story-box {
      background: var(--white);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      margin-bottom: 30px;
    }
    .story-content {
      padding: 36px 30px;
    }

    /* 8. 数据统计条 */
    .stat-strip-card {
      text-align: center;
      padding: 20px;
    }
    .stat-number {
      font-size: 42px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .stat-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--graphite);
    }

    /* 9. 客户口碑卡片 */
    .review-card {
      background: var(--white);
      border-radius: var(--radius);
      padding: 26px;
      border: 1px solid var(--border-color);
      height: 100%;
      box-shadow: var(--shadow-sm);
    }
    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 20px;
    }
    .user-avatar-circle {
      width: 44px;
      height: 44px;
      background: var(--track-gray);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--graphite);
    }

    /* 10. 资讯动态卡片 */
    .news-card {
      background: var(--white);
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      overflow: hidden;
      height: 100%;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .news-body {
      padding: 22px;
    }
    .news-meta {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    /* 11. FAQ 手风琴样式调整 */
    .accordion-title {
      font-size: 16px;
      font-weight: 600;
      color: var(--dark-navy) !important;
      border-radius: 6px;
      background: var(--white) !important;
      border: 1px solid var(--border-color);
      margin-bottom: 8px;
      padding: 18px 20px !important;
    }
    .accordion-content {
      border: 1px solid var(--border-color);
      border-top: none;
      margin-top: -8px;
      margin-bottom: 12px;
      border-bottom-left-radius: 6px;
      border-bottom-right-radius: 6px;
      background: var(--white);
      font-size: 15px;
      color: var(--text-muted);
      padding: 20px !important;
    }

    /* 12. 转化区 */
    #cta {
      background: linear-gradient(135deg, var(--dark-navy) 0%, var(--graphite) 100%);
      color: var(--white);
    }
    .cta-form-box {
      background: var(--white);
      border-radius: 12px;
      padding: 30px;
      color: var(--text-main);
      box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    }
    .cta-form-box input, .cta-form-box select {
      height: 44px;
      border-radius: 6px;
      margin-bottom: 14px;
      border: 1px solid var(--border-color);
      padding: 0 12px;
      font-size: 14px;
    }

    /* 页脚 */
    footer {
      background: #060B18;
      color: #94A3B8;
      padding: 70px 0 24px;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    footer h4 {
      color: var(--white);
      font-size: 16px;
      margin-bottom: 18px;
    }
    footer ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    footer ul li {
      margin-bottom: 10px;
      font-size: 14px;
    }
    footer ul li a { color: #94A3B8; }
    footer ul li a:hover { color: var(--primary); }
    .footer-bottom {
      margin-top: 50px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,0.06);
      font-size: 13px;
      text-align: center;
    }

    @media screen and (max-width: 768px) {
      .hero-h1 { font-size: 28px; }
      .section-main-title { font-size: 24px; }
      .icon-nav-list { display: none; }
      section { padding: 50px 0; }
    }