/* roulang page: index */
:root {
      --primary-dark: #0B0F19;
      --primary-navy: #0F172A;
      --accent-green: #10B981;
      --accent-green-hover: #059669;
      --accent-orange: #F97316;
      --accent-cyan: #06B6D4;
      --bg-body: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-sub: #64748B;
      --border-color: #E2E8F0;
      --border-light: rgba(226, 232, 240, 0.8);
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 6px 24px -4px rgba(15, 23, 42, 0.07);
      --shadow-lg: 0 16px 36px -6px rgba(15, 23, 42, 0.12);
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
      --font-mono: "DIN Alternate", "Roboto Mono", "Inter", monospace;
    }

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

    html {
      font-size: 16px;
      scroll-behavior: smooth;
      scroll-padding-top: 86px;
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-body);
      line-height: 1.75;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    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;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section-sp {
      padding-top: 96px;
      padding-bottom: 96px;
      position: relative;
    }

    .section-sp-dark {
      background-color: var(--primary-dark);
      color: #F8FAFC;
    }

    .section-header {
      margin-bottom: 56px;
    }

    .section-header.text-center {
      text-align: center;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background: rgba(16, 185, 129, 0.12);
      border: 1px solid rgba(16, 185, 129, 0.3);
      color: #047857;
      font-size: 0.8125rem;
      font-weight: 600;
      border-radius: 9999px;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      margin-bottom: 14px;
    }

    .section-sp-dark .section-tag {
      background: rgba(16, 185, 129, 0.18);
      border-color: rgba(16, 185, 129, 0.4);
      color: #34D399;
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: -0.01em;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .section-sp-dark .section-title {
      color: #FFFFFF;
    }

    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-sub);
      max-width: 780px;
      margin: 0 auto;
      line-height: 1.8;
    }

    .section-sp-dark .section-desc {
      color: #94A3B8;
    }

    /* 顶部复合导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 12px rgba(15, 23, 42, 0.06);
    }

    .top-bar {
      background-color: var(--primary-dark);
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 6px 0;
    }

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

    .sys-indicator {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--accent-green);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.3);
    }

    .main-nav-bar {
      padding: 12px 0;
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-navy);
      letter-spacing: -0.02em;
    }

    .brand-symbol {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 900;
      font-size: 1.15rem;
      box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
    }

    .nav-links {
      display: flex;
      gap: 22px;
      list-style: none;
      align-items: center;
    }

    .nav-item a {
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--text-muted);
      padding: 6px 4px;
      position: relative;
    }

    .nav-item a:hover,
    .nav-item a.active {
      color: var(--accent-green);
    }

    .nav-item a.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--accent-green);
      border-radius: 2px;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.9375rem;
      font-weight: 700;
      border-radius: 8px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      text-align: center;
    }

    .btn-primary {
      background-color: var(--accent-green);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
    }

    .btn-primary:hover {
      background-color: var(--accent-green-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(16, 185, 129, 0.4);
    }

    .btn-secondary {
      background-color: transparent;
      border-color: var(--border-color);
      color: var(--primary-navy);
    }

    .btn-secondary:hover {
      background-color: #F1F5F9;
      border-color: #CBD5E1;
    }

    .btn-orange {
      background-color: var(--accent-orange);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(249, 115, 22, 0.3);
    }

    .btn-orange:hover {
      background-color: #EA580C;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(249, 115, 22, 0.4);
    }

    .btn-outline-white {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.3);
      color: #FFFFFF;
    }

    .btn-outline-white:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #FFFFFF;
    }

    .btn-sm {
      padding: 6px 14px;
      font-size: 0.8125rem;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      cursor: pointer;
      color: var(--primary-navy);
    }

    /* 1. Hero 首屏 - 旗舰店视效 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(11, 15, 25, 0.92) 0%, rgba(15, 23, 42, 0.88) 100%), url('/assets/images/20d1cafde7859b6d.png') center/cover no-repeat;
      padding: 100px 0 110px;
      color: #FFFFFF;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .hero-content {
      max-width: 880px;
      margin: 0 auto;
      text-align: center;
    }

    .hero-badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(16, 185, 129, 0.4);
      padding: 6px 18px;
      border-radius: 9999px;
      font-size: 0.875rem;
      margin-bottom: 24px;
      backdrop-filter: blur(8px);
    }

    .hero-title {
      font-size: 3.25rem;
      font-weight: 900;
      line-height: 1.22;
      letter-spacing: -0.02em;
      margin-bottom: 24px;
    }

    .hero-title span {
      background: linear-gradient(90deg, #34D399 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-sub {
      font-size: 1.125rem;
      line-height: 1.85;
      color: #CBD5E1;
      margin-bottom: 36px;
      text-align: justify;
      text-justify: inter-ideograph;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
    }

    .hero-series-bar {
      background: rgba(15, 23, 42, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.12);
      backdrop-filter: blur(16px);
      border-radius: 14px;
      padding: 16px 28px;
      display: flex;
      justify-content: space-around;
      align-items: center;
      flex-wrap: wrap;
      gap: 18px;
    }

    .series-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.9375rem;
      color: #E2E8F0;
    }

    .series-icon {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: rgba(16, 185, 129, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #34D399;
      font-size: 0.9rem;
      font-weight: 700;
    }

    /* 2. 品牌与技术内核 (#about) */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .about-media {
      position: relative;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-lg);
    }

    .about-card-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(15, 23, 42, 0.9);
      backdrop-filter: blur(8px);
      padding: 14px 20px;
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #F8FAFC;
      font-size: 0.875rem;
    }

    .about-points {
      list-style: none;
      margin-top: 24px;
    }

    .about-point-item {
      display: flex;
      gap: 16px;
      margin-bottom: 18px;
    }

    .point-dot {
      width: 24px;
      height: 24px;
      border-radius: 6px;
      background: rgba(16, 185, 129, 0.15);
      color: var(--accent-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* 3. 核心优势六格网格 (#advantages) */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .adv-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
    }

    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(16, 185, 129, 0.5);
    }

    .adv-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: #ECFDF5;
      color: var(--accent-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .adv-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .adv-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .adv-tag {
      font-size: 0.75rem;
      color: var(--text-sub);
      background: #F1F5F9;
      padding: 4px 10px;
      border-radius: 6px;
      display: inline-block;
      font-weight: 600;
    }

    /* 4. 产品矩阵大卡片 (#products) */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .product-card {
      background: var(--bg-card);
      border-radius: 16px;
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }

    .product-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }

    .product-card.featured {
      border: 2px solid var(--accent-green);
      position: relative;
    }

    .product-header-badge {
      background: var(--accent-green);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      text-align: center;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .product-body {
      padding: 32px 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .product-title {
      font-size: 1.375rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .product-subtitle {
      font-size: 0.875rem;
      color: var(--text-sub);
      margin-bottom: 24px;
    }

    .product-feature-list {
      list-style: none;
      margin-bottom: 28px;
      flex-grow: 1;
    }

    .product-feature-item {
      font-size: 0.9375rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .product-feature-item::before {
      content: "✓";
      color: var(--accent-green);
      font-weight: bold;
    }

    /* 5. 战队实战工作流 (#scenarios) */
    .scenario-steps {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      position: relative;
    }

    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 32px 24px;
      position: relative;
    }

    .step-number {
      font-family: var(--font-mono);
      font-size: 2.75rem;
      font-weight: 900;
      color: rgba(16, 185, 129, 0.2);
      line-height: 1;
      margin-bottom: 12px;
    }

    .step-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .step-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 6. 深色战术复盘对比区 (#philosophy) */
    .comparison-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .comp-col {
      padding: 36px 32px;
      border-radius: 14px;
    }

    .comp-col.legacy {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .comp-col.modern {
      background: rgba(16, 185, 129, 0.06);
      border: 1px solid rgba(16, 185, 129, 0.3);
    }

    .comp-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .comp-list {
      list-style: none;
    }

    .comp-item {
      padding: 12px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9375rem;
      color: #CBD5E1;
      display: flex;
      justify-content: space-between;
    }

    .comp-item:last-child {
      border-bottom: none;
    }

    /* 7. 多端演练看板 (#demo) */
    .demo-showcase {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }

    .demo-img-box {
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-lg);
    }

    .demo-terminal-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .terminal-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 10px;
      padding: 20px 24px;
      transition: all 0.25s ease;
    }

    .terminal-card:hover {
      border-color: var(--accent-green);
      transform: translateX(6px);
    }

    /* 8. 标杆俱乐部案例 (#cases) */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-img-holder {
      height: 220px;
      overflow: hidden;
    }

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

    .case-card:hover .case-img-holder img {
      transform: scale(1.05);
    }

    .case-content {
      padding: 28px;
    }

    .case-stat-row {
      display: flex;
      gap: 24px;
      margin-top: 18px;
      padding-top: 18px;
      border-top: 1px solid var(--border-color);
    }

    .case-stat-item h4 {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--accent-green);
      font-family: var(--font-mono);
    }

    .case-stat-item p {
      font-size: 0.8125rem;
      color: var(--text-sub);
    }

    /* 9. 关键指标统计通栏 (#stats) */
    .stats-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .stat-box {
      padding: 24px 16px;
    }

    .stat-number {
      font-family: var(--font-mono);
      font-size: 3rem;
      font-weight: 900;
      color: #34D399;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .stat-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 6px;
    }

    .stat-sub {
      font-size: 0.8125rem;
      color: #94A3B8;
    }

    /* 10. 套餐授权价格与选型 (#pricing) */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      align-items: stretch;
    }

    .pricing-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 16px;
      padding: 40px 32px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
    }

    .pricing-card.popular {
      border: 2px solid var(--accent-green);
      box-shadow: var(--shadow-lg);
      transform: translateY(-8px);
    }

    .pricing-card:hover {
      border-color: var(--accent-green);
    }

    .pricing-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent-green);
      color: #FFFFFF;
      padding: 4px 16px;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.05em;
    }

    .pricing-tier {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .pricing-price {
      font-family: var(--font-mono);
      font-size: 2.5rem;
      font-weight: 900;
      color: var(--primary-navy);
      margin-bottom: 12px;
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

    .pricing-price span {
      font-size: 0.875rem;
      color: var(--text-sub);
      font-family: var(--font-stack);
      font-weight: normal;
    }

    .pricing-desc {
      font-size: 0.875rem;
      color: var(--text-sub);
      margin-bottom: 24px;
      min-height: 48px;
    }

    .pricing-checklist {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }

    .pricing-check-item {
      font-size: 0.9375rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .pricing-check-item::before {
      content: "●";
      color: var(--accent-green);
      font-size: 0.75rem;
    }

    /* 11. 教练与管理层用户故事 (#stories) */
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .story-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 14px;
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .story-quote {
      font-size: 0.96rem;
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 24px;
      position: relative;
    }

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

    .story-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--primary-navy);
      font-size: 1rem;
    }

    .story-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .story-info p {
      font-size: 0.8125rem;
      color: var(--text-sub);
    }

    /* 12. 评价墙与行业口碑 (#testimonials) */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .rating-stars {
      color: #F59E0B;
      font-size: 0.875rem;
      margin-bottom: 12px;
      letter-spacing: 2px;
    }

    .testi-text {
      font-size: 0.90625rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 16px;
    }

    .testi-tag {
      font-size: 0.75rem;
      padding: 3px 8px;
      background: #F1F5F9;
      border-radius: 4px;
      color: var(--text-sub);
      display: inline-block;
    }

    /* 13. 战术与运动科学资讯 (#news) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .news-thumb {
      height: 180px;
      overflow: hidden;
    }

    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .news-card:hover .news-thumb img {
      transform: scale(1.04);
    }

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

    .news-meta {
      font-size: 0.8125rem;
      color: var(--text-sub);
      margin-bottom: 10px;
    }

    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.45;
    }

    .news-excerpt {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 14. 常见问题解答 FAQ (#faq) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 10px;
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }

    .faq-item.active {
      border-color: var(--accent-green);
    }

    .faq-trigger {
      width: 100%;
      padding: 20px 24px;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.25rem;
      font-weight: 400;
      color: var(--text-sub);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--accent-green);
    }

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.9375rem;
      line-height: 1.8;
    }

    .faq-item.active .faq-body {
      max-height: 400px;
      padding-bottom: 22px;
      transition: max-height 0.35s ease-in-out;
    }

    /* 全宽底部转化预留区 (Pre-footer CTA) */
    .prefooter-section {
      background: linear-gradient(135deg, #0B0F19 0%, #1E293B 100%);
      color: #FFFFFF;
      padding: 80px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .cta-card-box {
      max-width: 820px;
      margin: 0 auto;
      text-align: center;
    }

    .cta-form-inline {
      display: flex;
      gap: 12px;
      max-width: 560px;
      margin: 32px auto 16px;
    }

    .cta-input {
      flex: 1;
      padding: 14px 20px;
      border-radius: 8px;
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.08);
      color: #FFFFFF;
      font-size: 0.9375rem;
      outline: none;
    }

    .cta-input:focus {
      border-color: var(--accent-green);
      background: rgba(255, 255, 255, 0.12);
    }

    .cta-input::placeholder {
      color: #94A3B8;
    }

    /* 页脚区域 (Footer) */
    .site-footer {
      background-color: var(--primary-dark);
      color: #94A3B8;
      padding: 72px 0 32px;
      font-size: 0.875rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 56px;
    }

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

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

    .footer-links li {
      margin-bottom: 12px;
    }

    .footer-links a:hover {
      color: var(--accent-green);
    }

    .footer-contact-item {
      margin-bottom: 10px;
      line-height: 1.6;
    }

    .footer-bottom-bar {
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
    }

    /* 移动端断点适配 */
    @media (max-width: 1024px) {
      .advantages-grid,
      .products-grid,
      .scenario-steps,
      .pricing-grid,
      .stories-grid,
      .testimonials-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-title {
        font-size: 2.5rem;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 16px 24px rgba(0, 0, 0, 0.1);
        display: none;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .about-grid,
      .comparison-wrapper,
      .demo-showcase,
      .cases-grid,
      .advantages-grid,
      .products-grid,
      .scenario-steps,
      .pricing-grid,
      .stories-grid,
      .testimonials-grid,
      .news-grid {
        grid-template-columns: 1fr;
      }
      .stats-bar-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .cta-form-inline {
        flex-direction: column;
      }
      .hero-series-bar {
        flex-direction: column;
        align-items: flex-start;
      }
    }