/* roulang page: index */
:root {
      --primary-dark: #0F3A40;
      --primary-light: #14B8A6;
      --accent-violet: #6366F1;
      --accent-amber: #F59E0B;
      --bg-slate: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-deep: #0B131E;
      --text-main: #0F172A;
      --text-body: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 4px;
      --radius-md: 6px;
      --radius-lg: 8px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
      --shadow-glow: 0 0 20px rgba(20, 184, 166, 0.2);
      --max-width: 1240px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-slate);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

    button, input, select, textarea {
      font: inherit;
    }

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部双行导航系统 */
    .top-bar {
      height: 36px;
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
    }

    .top-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 100;
      height: 72px;
      background-color: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 20px;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }

    .brand-logo svg {
      width: 32px;
      height: 32px;
      fill: var(--primary-dark);
    }

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

    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }

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

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary-light);
      transition: width 0.2s ease;
    }

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

    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all 0.2s ease;
      border: 1px solid transparent;
    }

    .btn:hover {
      transform: translateY(-1px);
    }

    .btn-primary {
      background-color: var(--primary-dark);
      color: #FFFFFF;
      box-shadow: var(--shadow-sm);
    }

    .btn-primary:hover {
      background-color: #174c54;
      color: #FFFFFF;
    }

    .btn-accent {
      background-color: var(--primary-light);
      color: #07272C;
    }

    .btn-accent:hover {
      background-color: #0d9488;
      color: #FFFFFF;
    }

    .btn-outline {
      background-color: transparent;
      border-color: var(--border-color);
      color: var(--text-main);
    }

    .btn-outline:hover {
      border-color: var(--primary-dark);
      background-color: #F8FAFC;
    }

    .btn-gold {
      background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
      color: #FFFFFF;
      font-weight: 700;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    /* 板块排版公用 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-bg-white {
      background-color: var(--bg-white);
    }

    .section-bg-slate {
      background-color: var(--bg-slate);
    }

    .section-bg-deep {
      background-color: var(--bg-deep);
      color: #E2E8F0;
    }

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

    .section-header.center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }

    .badge-sub {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      background-color: rgba(20, 184, 166, 0.12);
      color: var(--primary-light);
      margin-bottom: 12px;
    }

    .section-bg-deep .badge-sub {
      background-color: rgba(20, 184, 166, 0.2);
      color: #2DD4BF;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-bg-deep .section-title {
      color: #FFFFFF;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .section-bg-deep .section-desc {
      color: #94A3B8;
    }

    /* 板块 1: Hero（黑金会员俱乐部质感） */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(20, 184, 166, 0.15) 0%, transparent 60%),
                  radial-gradient(circle at 20% 80%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
                  #0A1118;
      color: #FFFFFF;
      padding: 90px 0 80px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      position: relative;
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 6px 14px;
      background: linear-gradient(90deg, rgba(245, 158, 11, 0.2) 0%, rgba(20, 184, 166, 0.1) 100%);
      border: 1px solid rgba(245, 158, 11, 0.4);
      border-radius: 20px;
      margin-bottom: 22px;
    }

    .hero-badge-icon {
      width: 16px;
      height: 16px;
      fill: #F59E0B;
    }

    .hero-badge-text {
      font-size: 13px;
      font-weight: 600;
      color: #FCD34D;
    }

    .hero-title {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
      color: #F8FAFC;
    }

    .hero-title span {
      background: linear-gradient(135deg, #2DD4BF 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro {
      font-size: 16px;
      line-height: 1.75;
      color: #94A3B8;
      margin-bottom: 32px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .hero-card-panel {
      background: rgba(15, 23, 42, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
      backdrop-filter: blur(12px);
      position: relative;
    }

    .hero-card-panel::before {
      content: '';
      position: absolute;
      top: 0;
      left: 10%;
      right: 10%;
      height: 2px;
      background: linear-gradient(90deg, transparent, #14B8A6, #F59E0B, transparent);
    }

    .hero-tier-card {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 20px;
    }

    .tier-badge {
      display: inline-block;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      background: rgba(245, 158, 11, 0.15);
      color: #FBBF24;
      font-size: 12px;
      font-weight: 700;
      border: 1px solid rgba(245, 158, 11, 0.3);
    }

    .tier-specs {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      font-size: 14px;
      color: #CBD5E1;
    }

    .tier-specs li {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .tier-specs li svg {
      width: 18px;
      height: 18px;
      fill: #14B8A6;
      flex-shrink: 0;
    }

    /* 板块 2: 定位与白皮书 */
    .whitepaper-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .topo-img-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      background: #FFF;
    }

    .topo-img-box img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    .spec-check-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .spec-check-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 15px;
      color: var(--text-body);
    }

    .spec-check-item svg {
      width: 20px;
      height: 20px;
      fill: var(--primary-light);
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* 板块 3: 核心优势矩阵（严格 6 卡片 3x2） */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .advantage-card {
      background-color: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      position: relative;
    }

    .advantage-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: rgba(20, 184, 166, 0.4);
    }

    .card-num {
      position: absolute;
      top: 24px;
      right: 24px;
      font-size: 24px;
      font-weight: 800;
      color: #E2E8F0;
      font-family: monospace;
    }

    .adv-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-md);
      background: rgba(20, 184, 166, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary-dark);
    }

    .adv-icon svg {
      width: 24px;
      height: 24px;
      fill: currentColor;
    }

    .adv-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .adv-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 4: 热门产品线 (3 张深度卡片) */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .product-deep-card {
      background-color: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }

    .product-deep-card:hover {
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-light);
    }

    .product-img-wrap {
      height: 200px;
      overflow: hidden;
      position: relative;
    }

    .product-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .product-deep-card:hover .product-img-wrap img {
      transform: scale(1.05);
    }

    .product-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .product-tag-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 12px;
    }

    .prod-tag {
      font-size: 11px;
      font-weight: 600;
      padding: 2px 8px;
      background: #F1F5F9;
      color: var(--text-muted);
      border-radius: 4px;
    }

    .product-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .product-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      flex-grow: 1;
      line-height: 1.6;
    }

    .product-footer {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    /* 板块 5: 全栈工作流 (深色架构) */
    .workflow-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
      margin-top: 40px;
    }

    .workflow-step {
      background: rgba(30, 41, 59, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 26px 20px;
      position: relative;
    }

    .step-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      background: var(--primary-light);
      color: #0F3A40;
      font-weight: 800;
      border-radius: 50%;
      margin-bottom: 16px;
    }

    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 10px;
    }

    .step-desc {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块 6: 案例与工程实践 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .case-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

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

    .case-client {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary-dark);
    }

    .case-stat-badge {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-light);
      background: rgba(20, 184, 166, 0.1);
      padding: 4px 10px;
      border-radius: 4px;
    }

    .case-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 14px;
    }

    /* 板块 7: 深度场景交错混排 */
    .scenario-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
      margin-bottom: 50px;
    }

    .scenario-item:last-child {
      margin-bottom: 0;
    }

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

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

    .scenario-thumb {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      height: 320px;
    }

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

    .scenario-content h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .scenario-content p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }

    /* 板块 8: 效能数据带 (横向4栏) */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px 30px;
      box-shadow: var(--shadow-sm);
    }

    .metric-col {
      text-align: center;
      position: relative;
    }

    .metric-col:not(:last-child)::after {
      content: '';
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background-color: var(--border-color);
    }

    .metric-val {
      font-size: 38px;
      font-weight: 800;
      color: var(--primary-dark);
      font-family: monospace;
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .metric-sub {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 9: 专家评语 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .quote-content {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 24px;
      flex-grow: 1;
      position: relative;
    }

    .quote-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 18px;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary-dark);
      font-size: 14px;
    }

    .author-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 10: 资讯与版本演进 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.2s ease;
    }

    .news-card:hover {
      border-color: var(--primary-light);
      transform: translateY(-2px);
    }

    .news-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .news-date {
      color: var(--primary-light);
      font-weight: 600;
    }

    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-dark);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .news-link:hover {
      color: var(--primary-light);
    }

    /* 板块 11: FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-summary {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      user-select: none;
    }

    .faq-summary::-webkit-details-marker {
      display: none;
    }

    .faq-icon-arrow {
      width: 18px;
      height: 18px;
      fill: var(--text-muted);
      transition: transform 0.25s ease;
    }

    details[open] .faq-icon-arrow {
      transform: rotate(180deg);
      fill: var(--primary-light);
    }

    .faq-body {
      padding: 0 24px 22px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      margin-top: -4px;
      padding-top: 16px;
    }

    /* 板块 12: 转化与试用申请 */
    .cta-container-card {
      background: #FFFFFF;
      border: 2px solid var(--primary-light);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      box-shadow: var(--shadow-lg), var(--shadow-glow);
    }

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

    .cta-info h3 {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .cta-info p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .trust-badges {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .trust-badge-item {
      display: flex;
      align-items: center;
      gap: 8px;
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 8px 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-dark);
    }

    .trust-badge-item svg {
      width: 18px;
      height: 18px;
      fill: var(--primary-light);
    }

    .trial-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
      background: #F8FAFC;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-input {
      padding: 10px 14px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      font-size: 14px;
      background: #FFFFFF;
      outline: none;
      transition: border-color 0.2s ease;
    }

    .form-input:focus {
      border-color: var(--primary-light);
    }

    /* 页脚系统 */
    .site-footer {
      background-color: #070F18;
      color: #94A3B8;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 60px;
      padding-bottom: 30px;
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-brand h4 {
      font-size: 18px;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      color: #64748B;
    }

    .footer-col-title {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      color: #94A3B8;
      transition: color 0.2s;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: #64748B;
    }

    .footer-bottom a {
      color: #94A3B8;
    }

    /* 抽屉导航（移动端） */
    .mobile-drawer {
      position: fixed;
      top: 0;
      right: -100%;
      width: 280px;
      height: 100vh;
      background: #FFFFFF;
      box-shadow: -4px 0 20px rgba(0,0,0,0.15);
      z-index: 1000;
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 20px;
      transition: right 0.3s ease;
    }

    .mobile-drawer.open {
      right: 0;
    }

    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 12px;
    }

    .drawer-close {
      background: none;
      border: none;
      font-size: 20px;
      cursor: pointer;
      color: var(--text-muted);
    }

    .drawer-menu {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .drawer-link {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
    }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.5);
      z-index: 999;
      display: none;
    }

    .drawer-overlay.active {
      display: block;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid, .whitepaper-grid, .cta-inner-grid {
        grid-template-columns: 1fr;
      }
      .advantage-grid, .products-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 30px;
      }
      .metric-col:nth-child(2)::after {
        display: none;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .advantage-grid, .products-grid, .cases-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .scenario-item, .scenario-item.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .scenario-item.reverse .scenario-content {
        direction: ltr;
      }
      .hero-title {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .metrics-bar {
        grid-template-columns: 1fr;
      }
      .metric-col::after {
        display: none !important;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }