/* roulang page: index */
:root {
      --primary-color: #0A5C5A;
      --primary-light: #12827F;
      --primary-dark: #06403E;
      --accent-orange: #FF6B35;
      --accent-orange-hover: #E8551F;
      --dark-surface: #111927;
      --dark-card: #1B2433;
      --bg-light: #F8F9FA;
      --bg-white: #FFFFFF;
      --text-main: #1F2937;
      --text-secondary: #4B5563;
      --text-muted: #9CA3AF;
      --border-color: #E5E7EB;
      --border-subtle: #F0F2F5;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 12px 32px -4px rgba(10, 92, 90, 0.12);
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    body {
      font-family: var(--font-family);
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
    }

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

    /* 顶部微型信息栏 */
    .top-bar {
      background-color: #06403E;
      color: #A3C9C8;
      font-size: 0.85rem;
      padding: 7px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-contact {
      display: flex;
      gap: 20px;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
    }

    /* 主导航栏 */
    .site-header {
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
      border-bottom: 1px solid var(--border-color);
    }
    .navbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--primary-color);
      letter-spacing: -0.5px;
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-weight: 900;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(10, 92, 90, 0.25);
    }
    .nav-links {
      display: flex;
      list-style: none;
      gap: 28px;
      align-items: center;
    }
    .nav-link {
      font-size: 0.96rem;
      font-weight: 500;
      color: var(--text-secondary);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-color);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary-color);
      transition: width 0.25s ease;
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--accent-orange);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
    }
    .btn-primary:hover {
      background-color: var(--accent-orange-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 107, 53, 0.4);
    }
    .btn-outline {
      background-color: transparent;
      border-color: var(--primary-color);
      color: var(--primary-color);
    }
    .btn-outline:hover {
      background-color: var(--primary-color);
      color: #FFFFFF;
    }
    .btn-outline-white {
      border-color: rgba(255, 255, 255, 0.4);
      color: #FFFFFF;
    }
    .btn-outline-white:hover {
      background-color: rgba(255, 255, 255, 0.1);
      border-color: #FFFFFF;
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 板块通用样式 */
    .section-padding {
      padding: 85px 0;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 52px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      background-color: rgba(10, 92, 90, 0.08);
      color: var(--primary-color);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      font-size: 1.02rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* 板块 1: Hero Area */
    .hero-section {
      background: linear-gradient(135deg, #094B49 0%, #063432 100%), url('/assets/images/ec6e23d39d07934f.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      color: #FFFFFF;
      padding: 95px 0 75px 0;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background-color: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 0.88rem;
      color: #D1FAE5;
      margin-bottom: 24px;
    }
    .hero-h1 {
      font-size: 2.9rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 22px;
      letter-spacing: -1px;
    }
    .hero-p {
      font-size: 1.05rem;
      color: #D1E5E4;
      line-height: 1.75;
      margin-bottom: 34px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 32px;
      flex-wrap: wrap;
    }
    .hero-guarantee {
      display: flex;
      gap: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding-top: 24px;
    }
    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.88rem;
      color: #E2ECEB;
    }
    .hero-visual-card {
      background: rgba(255, 255, 255, 0.07);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }
    .card-terminal-header {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 14px;
      margin-bottom: 18px;
    }
    .terminal-dots {
      display: flex;
      gap: 6px;
    }
    .terminal-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .terminal-dot.r { background: #FF5F56; }
    .terminal-dot.y { background: #FFBD2E; }
    .terminal-dot.g { background: #27C93F; }

    /* 工控参数状态条 */
    .hero-metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-lg);
      margin-top: -45px;
      position: relative;
      z-index: 10;
      border: 1px solid var(--border-subtle);
    }
    .metric-col {
      text-align: center;
      border-right: 1px solid var(--border-color);
    }
    .metric-col:last-child {
      border-right: none;
    }
    .metric-val {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-color);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-label {
      font-size: 0.88rem;
      color: var(--text-secondary);
    }

    /* 板块 2: 系统中台拓扑与架构 */
    .topology-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .arch-points {
      list-style: none;
      margin-top: 24px;
    }
    .arch-point {
      margin-bottom: 20px;
      display: flex;
      gap: 16px;
    }
    .arch-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background-color: rgba(10, 92, 90, 0.1);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
    }
    .compliance-badges {
      margin-top: 28px;
      padding-top: 20px;
      border-top: 1px dashed var(--border-color);
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .badge-chip {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      font-size: 0.82rem;
      color: var(--text-secondary);
      font-weight: 500;
    }

    /* 板块 3: 核心优势六宫格 */
    .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-md);
      padding: 30px;
      transition: all 0.3s ease;
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(10, 92, 90, 0.3);
    }
    .feature-icon-box {
      width: 48px;
      height: 48px;
      background: rgba(10, 92, 90, 0.08);
      color: var(--primary-color);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: bold;
      margin-bottom: 20px;
    }
    .feature-card h3 {
      font-size: 1.22rem;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .feature-card p {
      font-size: 0.93rem;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* 板块 4: 硬件与版本对比矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 34px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .matrix-card.featured {
      border: 2px solid var(--primary-color);
      box-shadow: var(--shadow-lg);
    }
    .matrix-ribbon {
      position: absolute;
      top: -14px;
      right: 24px;
      background: var(--accent-orange);
      color: white;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
    }
    .matrix-price {
      font-size: 1.9rem;
      font-weight: 800;
      color: var(--text-main);
      margin: 14px 0 20px 0;
    }
    .matrix-price span {
      font-size: 0.9rem;
      font-weight: 400;
      color: var(--text-muted);
    }
    .matrix-specs {
      list-style: none;
      margin-bottom: 28px;
      flex-grow: 1;
    }
    .matrix-specs li {
      padding: 9px 0;
      font-size: 0.92rem;
      color: var(--text-secondary);
      border-bottom: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .matrix-specs li::before {
      content: "✓";
      color: var(--primary-color);
      font-weight: bold;
    }

    /* 板块 5: 深色高并发技术底座 */
    .dark-section {
      background: var(--dark-surface);
      color: #FFFFFF;
      position: relative;
    }
    .dark-section .section-title {
      color: #FFFFFF;
    }
    .dark-section .section-subtitle {
      color: #9CA3AF;
    }
    .dark-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .dark-card {
      background: var(--dark-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 30px;
    }
    .dark-tag {
      color: #6EE7B7;
      font-size: 0.8rem;
      font-family: monospace;
      margin-bottom: 12px;
      display: block;
    }
    .dark-card h3 {
      font-size: 1.18rem;
      margin-bottom: 12px;
      color: #F3F4F6;
    }
    .dark-card p {
      font-size: 0.92rem;
      color: #9CA3AF;
      line-height: 1.65;
    }

    /* 板块 6: 实体经营实操故事 */
    .story-card {
      background: var(--bg-light);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
    }
    .story-content {
      padding: 44px;
    }
    .story-quote {
      font-size: 1.15rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .story-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 24px;
    }
    .story-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #D1D5DB;
    }
    .story-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      background: #FFFFFF;
      padding: 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }
    .stat-box-num {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--accent-orange);
    }

    /* 板块 7: 业务数据统计 */
    .stats-stripe {
      background: linear-gradient(90deg, #0A5C5A 0%, #084947 100%);
      color: #FFFFFF;
      padding: 55px 0;
    }
    .stats-stripe-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .stat-digit {
      font-size: 2.6rem;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -1px;
    }
    .stat-desc {
      font-size: 0.95rem;
      color: #D1E5E4;
      margin-top: 4px;
    }

    /* 板块 8: 口碑与行业信赖 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: #F59E0B;
      font-size: 0.95rem;
      margin-bottom: 12px;
    }
    .review-text {
      font-size: 0.94rem;
      color: var(--text-secondary);
      margin-bottom: 20px;
      line-height: 1.65;
    }
    .reviewer-info {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid var(--border-subtle);
      padding-top: 14px;
      font-size: 0.85rem;
    }
    .reviewer-name {
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-store {
      color: var(--text-muted);
    }

    /* 板块 9: 经营避坑指引与资讯 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .insight-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .insight-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .insight-img-wrap {
      height: 180px;
      overflow: hidden;
      background-color: var(--bg-light);
    }
    .insight-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .insight-card:hover .insight-img-wrap img {
      transform: scale(1.05);
    }
    .insight-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .insight-tag {
      font-size: 0.78rem;
      color: var(--primary-color);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .insight-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-desc {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .insight-link {
      font-size: 0.88rem;
      color: var(--primary-color);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 10: 传统 vs 智能管理系统对比表 */
    .comparison-table-wrap {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comparison-table th, .comparison-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.95rem;
    }
    .comparison-table th {
      background: var(--bg-light);
      font-weight: 700;
      color: var(--text-main);
    }
    .highlight-col {
      background-color: rgba(10, 92, 90, 0.03);
      font-weight: 600;
      color: var(--primary-color);
    }
    .check-icon {
      color: #10B981;
      font-weight: 800;
      margin-right: 6px;
    }
    .cross-icon {
      color: #EF4444;
      font-weight: 800;
      margin-right: 6px;
    }

    /* 板块 11: 落地异议拆解 */
    .objection-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 26px;
    }
    .objection-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      gap: 20px;
    }
    .objection-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: rgba(255, 107, 53, 0.1);
      color: var(--accent-orange);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: bold;
      flex-shrink: 0;
    }
    .objection-body h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .objection-body p {
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* 板块 12: 常见疑问手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      padding: 20px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-question:hover {
      color: var(--primary-color);
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      transition: transform 0.3s ease;
      color: var(--primary-color);
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      color: var(--text-secondary);
      font-size: 0.94rem;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      max-height: 220px;
      padding-bottom: 20px;
    }

    /* 板块 13: 落地保障承诺条 */
    .guarantees-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-card {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }
    .guarantee-badge {
      width: 52px;
      height: 52px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      color: var(--primary-color);
      font-size: 1.3rem;
      font-weight: 800;
    }
    .guarantee-card h4 {
      font-size: 1.05rem;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .guarantee-card p {
      font-size: 0.88rem;
      color: var(--text-secondary);
    }

    /* 板块 14: 底部收口行动区 */
    .cta-banner {
      background: linear-gradient(135deg, #0A5C5A 0%, #06403E 100%);
      color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      text-align: center;
      box-shadow: var(--shadow-lg);
    }
    .cta-form {
      max-width: 580px;
      margin: 32px auto 0 auto;
      display: flex;
      gap: 12px;
    }
    .cta-input {
      flex: 1;
      padding: 14px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.3);
      outline: none;
      color: var(--text-main);
      background: #FFFFFF;
    }
    .cta-input:focus {
      border-color: var(--accent-orange);
    }

    /* 吸底浮动条 */
    .sticky-bar {
      position: fixed;
      bottom: -100px;
      left: 0;
      width: 100%;
      background: rgba(17, 25, 39, 0.95);
      backdrop-filter: blur(10px);
      color: #FFFFFF;
      padding: 14px 0;
      z-index: 999;
      box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
      transition: bottom 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .sticky-bar.visible {
      bottom: 0;
    }
    .sticky-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 页脚 */
    .site-footer {
      background-color: #0E1624;
      color: #9CA3AF;
      padding: 70px 0 24px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.92rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.3fr 0.8fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1.05rem;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-contact-item {
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .qr-box {
      width: 110px;
      height: 110px;
      background: #FFFFFF;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #000;
      font-size: 0.75rem;
      text-align: center;
      padding: 8px;
      font-weight: 600;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #6B7280;
    }

    /* 响应式样式处理 */
    @media (max-width: 1024px) {
      .hero-grid, .topology-grid, .story-card {
        grid-template-columns: 1fr;
      }
      .features-grid, .matrix-grid, .dark-grid, .insights-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-metrics-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .metric-col:nth-child(2) {
        border-right: none;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links, .nav-cta {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links.mobile-active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .features-grid, .matrix-grid, .dark-grid, .insights-grid, .reviews-grid, .objection-grid, .guarantees-row {
        grid-template-columns: 1fr;
      }
      .stats-stripe-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 30px;
      }
      .cta-form {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .sticky-bar-inner {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }