/* roulang page: index */
:root {
      --primary: #0A58CA;
      --primary-hover: #084298;
      --primary-light: #E7F1FF;
      --accent: #00A86B;
      --accent-hover: #008f5a;
      --warning: #F59E0B;
      --dark-navy: #0B132B;
      --dark-card: #1C2541;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-title: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 10px 15px -3px rgba(15, 23, 42, 0.03);
      --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-family);
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.68;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
      outline: none;
    }

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

    /* 顶部微型信息条 */
    .topbar {
      background-color: #0F172A;
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      position: relative;
      z-index: 60;
    }
    .topbar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 38px;
    }
    .topbar-badges {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .topbar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #CBD5E1;
    }
    .topbar-badge svg {
      width: 14px;
      height: 14px;
      fill: var(--accent);
    }
    .topbar-contact {
      display: flex;
      gap: 20px;
    }
    .topbar-contact a:hover {
      color: #FFFFFF;
    }

    /* 内缩圆角浮动主导航 */
    .site-header {
      position: sticky;
      top: 16px;
      z-index: 50;
      margin-top: 12px;
      padding: 0 16px;
    }
    .nav-container {
      max-width: 1280px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      padding: 0 24px;
      transition: box-shadow 0.3s ease, border-color 0.3s ease;
    }
    .nav-container:hover {
      border-color: #CBD5E1;
      box-shadow: var(--shadow-lg);
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--text-title);
      letter-spacing: -0.02em;
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, var(--primary) 0%, #1E40AF 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      box-shadow: 0 4px 10px rgba(10, 88, 202, 0.3);
    }
    .brand-icon svg {
      width: 22px;
      height: 22px;
      fill: currentColor;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 24px;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      background-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(10, 88, 202, 0.25);
      transition: background-color 0.25s, transform 0.2s, box-shadow 0.25s;
      min-height: 44px;
    }
    .btn-cta:hover {
      background-color: var(--primary-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(10, 88, 202, 0.35);
      color: #FFFFFF;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      border: 1.5px solid var(--border-color);
      color: var(--text-body);
      background-color: #FFFFFF;
      transition: all 0.2s ease;
      min-height: 44px;
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }

    /* 板块通用布局 */
    .section-spacing {
      padding-top: 84px;
      padding-bottom: 84px;
      position: relative;
    }
    .section-spacing-alt {
      padding-top: 84px;
      padding-bottom: 84px;
      background-color: var(--bg-white);
      position: relative;
    }
    .section-heading-wrap {
      max-width: 820px;
      margin: 0 auto 52px;
      text-align: center;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      font-size: 0.8125rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.04em;
      margin-bottom: 14px;
      background-color: var(--primary-light);
      color: var(--primary);
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-title);
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. 首屏对比 Hero 板块 */
    .hero-section {
      padding: 60px 0 80px;
      background: linear-gradient(180deg, rgba(231, 241, 255, 0.45) 0%, rgba(248, 250, 252, 0) 100%);
    }
    .hero-header-box {
      text-align: center;
      max-width: 890px;
      margin: 0 auto 40px;
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 850;
      line-height: 1.25;
      color: var(--text-title);
      margin-bottom: 20px;
      letter-spacing: -0.025em;
    }
    .hero-h1 span {
      color: var(--primary);
    }
    .hero-intro {
      font-size: 1.1rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      margin-top: 48px;
    }
    .compare-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      position: relative;
      overflow: hidden;
    }
    .compare-card.before-card {
      background: #FAFAFA;
      border-left: 4px solid #94A3B8;
    }
    .compare-card.after-card {
      border-left: 4px solid var(--accent);
      background: linear-gradient(180deg, #FFFFFF 0%, #F0FDF4 100%);
      box-shadow: var(--shadow-lg);
    }
    .compare-tag {
      font-size: 0.8125rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 16px;
    }
    .before-card .compare-tag {
      background-color: #E2E8F0;
      color: #475569;
    }
    .after-card .compare-tag {
      background-color: #DCFCE7;
      color: #166534;
    }
    .compare-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-title);
    }
    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .compare-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.95rem;
      line-height: 1.6;
    }
    .compare-icon {
      width: 20px;
      height: 20px;
      flex-shrink: 0;
      margin-top: 3px;
    }

    /* 2. 平台介绍与运作理念区 */
    .about-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .about-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .about-img-box img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .about-spec-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      color: #FFFFFF;
      padding: 14px 20px;
      border-radius: var(--radius-md);
      font-size: 0.875rem;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .about-lead {
      font-size: 1.15rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 16px;
      line-height: 1.6;
    }
    .about-paragraph {
      color: var(--text-body);
      margin-bottom: 16px;
      font-size: 0.98rem;
    }
    .compliance-box {
      background: var(--primary-light);
      border-left: 4px solid var(--primary);
      padding: 16px 18px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-top: 24px;
    }
    .compliance-box p {
      font-size: 0.9rem;
      color: #1E3A8A;
      font-weight: 500;
      line-height: 1.6;
    }

    /* 3. 核心优势 6 卡片网格 */
    .grid-3x2 {
      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;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #BFDBFE;
    }
    .feature-icon-wrapper {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background-color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
    }
    .feature-icon-wrapper svg {
      width: 26px;
      height: 26px;
      fill: currentColor;
    }
    .feature-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 12px;
    }
    .feature-desc {
      font-size: 0.93rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .feature-label {
      align-self: flex-start;
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--accent);
      background-color: #ECFDF5;
      padding: 3px 10px;
      border-radius: var(--radius-full);
      border: 1px solid #A7F3D0;
    }

    /* 4. 热门服务矩阵 3 大图文卡片 */
    .service-matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .matrix-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s, box-shadow 0.25s;
      display: flex;
      flex-direction: column;
    }
    .matrix-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
    }
    .matrix-thumb {
      height: 210px;
      position: relative;
      overflow: hidden;
    }
    .matrix-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .matrix-card:hover .matrix-thumb img {
      transform: scale(1.05);
    }
    .matrix-status {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(10, 88, 202, 0.9);
      backdrop-filter: blur(4px);
      color: #FFFFFF;
      font-size: 0.78rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-full);
    }
    .matrix-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .matrix-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
    }
    .matrix-desc {
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .matrix-link {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .matrix-link:hover {
      color: var(--primary-hover);
      text-decoration: underline;
    }

    /* 5. 深色对比视觉区 */
    .dark-concept-section {
      background-color: var(--dark-navy);
      color: #E2E8F0;
      padding: 90px 0;
      position: relative;
    }
    .dark-concept-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .dark-tag {
      background: rgba(0, 168, 107, 0.15);
      color: #34D399;
      border: 1px solid rgba(52, 211, 153, 0.3);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      font-size: 0.82rem;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 16px;
    }
    .dark-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1.3;
      margin-bottom: 20px;
    }
    .dark-desc {
      font-size: 1rem;
      line-height: 1.75;
      color: #94A3B8;
      margin-bottom: 28px;
    }
    .dark-card-box {
      background: var(--dark-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      gap: 20px;
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    }
    .dark-metric-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding-bottom: 16px;
    }
    .dark-metric-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .dark-metric-label {
      font-size: 0.95rem;
      color: #CBD5E1;
    }
    .dark-metric-value {
      font-size: 1.35rem;
      font-weight: 700;
      color: #38BDF8;
    }

    /* 6. 互动流转步骤区 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 28px 20px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
    }
    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFFFFF;
      font-weight: 800;
      font-size: 1.15rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 18px;
    }
    .step-name {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 10px;
    }
    .step-info {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 7. 成长故事区 */
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
    }
    .story-img {
      height: 240px;
      width: 100%;
      object-fit: cover;
    }
    .story-content {
      padding: 28px;
      flex-grow: 1;
    }
    .story-badge {
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 3px 10px;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 12px;
    }
    .story-title {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 12px;
    }
    .story-desc {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.68;
    }

    /* 8. 数据统计条 */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0A58CA 0%, #1E40AF 100%);
      color: #FFFFFF;
      padding: 60px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item {
      padding: 10px;
    }
    .metric-number {
      font-size: 3rem;
      font-weight: 850;
      line-height: 1.1;
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }
    .metric-unit {
      font-size: 1.5rem;
      color: #93C5FD;
      font-weight: 600;
    }
    .metric-caption {
      font-size: 0.95rem;
      color: #E2E8F0;
      font-weight: 500;
    }

    /* 9. 会员与主理人评价墙 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.68;
      margin-bottom: 20px;
      font-style: italic;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .avatar-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1rem;
    }
    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-title);
    }
    .author-info p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 10. 体育前沿与社群动态资讯区 */
    .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-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: border-color 0.2s;
    }
    .news-card:hover {
      border-color: var(--primary);
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .news-tag {
      color: var(--primary);
      font-weight: 600;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .news-summary {
      font-size: 0.9rem;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 11. FAQ 手风琴交互区 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.2s, box-shadow 0.2s;
    }
    .faq-item:hover {
      border-color: #CBD5E1;
    }
    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .faq-trigger {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-title);
      cursor: pointer;
      min-height: 52px;
    }
    .faq-arrow {
      width: 20px;
      height: 20px;
      transition: transform 0.3s ease;
      fill: var(--text-muted);
      flex-shrink: 0;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      fill: var(--primary);
    }
    .faq-content {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.3s ease;
    }
    .faq-item.active .faq-content {
      padding: 0 24px 22px;
      max-height: 300px;
    }
    .faq-content p {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 12. 底部全宽行动召唤区 */
    .final-cta-section {
      padding: 80px 0;
      background-color: var(--bg-white);
    }
    .cta-card-wrapper {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: 24px;
      padding: 64px 36px;
      text-align: center;
      color: #FFFFFF;
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }
    .cta-badge {
      display: inline-block;
      background: rgba(255, 255, 255, 0.12);
      padding: 4px 14px;
      border-radius: var(--radius-full);
      font-size: 0.8125rem;
      font-weight: 600;
      margin-bottom: 20px;
      letter-spacing: 0.04em;
    }
    .cta-heading {
      font-size: 2.25rem;
      font-weight: 800;
      margin-bottom: 18px;
      line-height: 1.3;
    }
    .cta-subtext {
      max-width: 680px;
      margin: 0 auto 36px;
      font-size: 1.05rem;
      color: #CBD5E1;
      line-height: 1.7;
    }
    .cta-btn-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .cta-btn-light {
      background-color: #FFFFFF;
      color: var(--primary);
      font-weight: 700;
      padding: 12px 28px;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
      transition: background-color 0.2s, transform 0.2s;
      min-height: 44px;
    }
    .cta-btn-light:hover {
      background-color: #F1F5F9;
      transform: translateY(-2px);
    }
    .cta-note {
      margin-top: 24px;
      font-size: 0.8125rem;
      color: #94A3B8;
    }

    /* 全局页脚 */
    .site-footer {
      background-color: #0F172A;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
      color: #94A3B8;
      font-size: 0.92rem;
    }
    .footer-title {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-contact-info p {
      margin-bottom: 10px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 0.825rem;
    }
    .footer-copy a {
      color: #CBD5E1;
    }
    .footer-badges {
      display: flex;
      gap: 16px;
    }

    /* 移动端菜单抽屉 */
    .mobile-nav-toggle {
      display: none;
      font-size: 1.5rem;
      color: var(--text-title);
      padding: 8px;
    }

    /* 响应式断点系统 */
    @media (max-width: 1024px) {
      .grid-3x2 {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .hero-compare-grid {
        grid-template-columns: 1fr;
      }
      .about-layout {
        grid-template-columns: 1fr;
      }
      .dark-concept-grid {
        grid-template-columns: 1fr;
      }
      .stories-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 32px;
      }
      .grid-3x2, .service-matrix-grid, .steps-grid, .testimonials-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .nav-menu {
        display: none;
      }
      .mobile-nav-toggle {
        display: block;
      }
      .topbar-badges {
        display: none;
      }
      .topbar-inner {
        justify-content: center;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }