/* roulang page: index */
:root {
      --bg-page: #FBFBFA;
      --bg-subtle: #F4F5F7;
      --bg-card: #FFFFFF;
      --color-primary: #111625;
      --color-accent: #1E3A8A;
      --color-slate: #64748B;
      --color-gold: #D97706;
      --color-dark: #0C0F17;
      --text-main: #1E293B;
      --text-muted: #475569;
      --border-color: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.08);
      --radius-sm: 8px;
      --radius-md: 12px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 10px 25px -5px rgba(0, 0, 0, 0.03);
      --shadow-hover: 0 12px 30px -4px rgba(17, 24, 39, 0.08);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

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

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

    /* 容器体系 */
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部辅助条 */
    .topbar {
      background-color: #F1F3F5;
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--color-slate);
      padding: 8px 0;
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topbar-left {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .topbar-left span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .topbar-right {
      display: flex;
      gap: 16px;
    }
    .topbar-right a:hover {
      color: var(--color-primary);
    }

    /* 主导航 */
    .navbar {
      background: rgba(251, 251, 250, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .nav-content {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      color: var(--color-primary);
      letter-spacing: -0.01em;
    }
    .brand-logo i {
      font-size: 24px;
      color: var(--color-accent);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--color-primary);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--color-accent);
      transition: var(--transition);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-nav {
      background-color: var(--color-primary);
      color: #FFFFFF;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-nav:hover {
      background-color: #1e293b;
      transform: translateY(-1px);
    }

    /* 移动端汉堡按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 22px;
      color: var(--color-primary);
      cursor: pointer;
    }

    /* 通用区块排版 */
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-subtle {
      background-color: var(--bg-subtle);
    }
    .section-dark {
      background-color: var(--color-dark);
      color: #FFFFFF;
    }
    .section-header {
      margin-bottom: 56px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--color-accent);
      background: rgba(30, 58, 138, 0.08);
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .section-dark .section-tag {
      background: rgba(255, 255, 255, 0.1);
      color: #93C5FD;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--color-primary);
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 按钮样式 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--color-primary);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background: #1e293b;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(17, 24, 39, 0.15);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--color-primary);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      background: #F8FAFC;
      border-color: #CBD5E1;
      transform: translateY(-2px);
    }
    .btn-gold {
      background: var(--color-gold);
      color: #FFFFFF;
    }
    .btn-gold:hover {
      background: #B45309;
      transform: translateY(-2px);
    }

    /* 1. Hero 沉浸大图板块 */
    .hero-section {
      position: relative;
      background: #0f172a;
      background-image: linear-gradient(135deg, rgba(17, 22, 37, 0.94) 0%, rgba(12, 15, 23, 0.98) 100%), url('/assets/images/4715a0ff7e4d4520.webp');
      background-size: cover;
      background-position: center;
      color: #FFFFFF;
      padding: 110px 0 120px 0;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      color: #E2E8F0;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 46px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
      margin-bottom: 24px;
      color: #FFFFFF;
    }
    .hero-p {
      font-size: 17px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 620px;
    }
    .hero-cta {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-trust-list {
      display: flex;
      gap: 28px;
      font-size: 13px;
      color: #94A3B8;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
    }
    .hero-trust-list span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .hero-trust-list i {
      color: #38BDF8;
    }

    /* 首屏右侧拟真交互台 */
    .hero-workbench {
      background: #1A2234;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
      overflow: hidden;
    }
    .workbench-header {
      background: #131A29;
      padding: 14px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .workbench-dots {
      display: flex;
      gap: 6px;
    }
    .workbench-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #334155;
    }
    .workbench-dots span:nth-child(1) { background: #EF4444; }
    .workbench-dots span:nth-child(2) { background: #F59E0B; }
    .workbench-dots span:nth-child(3) { background: #10B981; }
    .workbench-body {
      padding: 24px;
    }
    .wb-clause {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-sm);
      padding: 16px;
      margin-bottom: 16px;
      font-size: 13px;
      line-height: 1.7;
    }
    .wb-clause-title {
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 8px;
      display: flex;
      justify-content: space-between;
    }
    .wb-risk-tag {
      background: rgba(239, 68, 68, 0.15);
      color: #F87171;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 11px;
    }
    .wb-del {
      color: #F87171;
      text-decoration: line-through;
      background: rgba(239, 68, 68, 0.1);
      padding: 0 4px;
    }
    .wb-add {
      color: #34D399;
      background: rgba(16, 185, 129, 0.1);
      padding: 0 4px;
    }
    .wb-advise {
      background: rgba(30, 58, 138, 0.25);
      border-left: 3px solid #38BDF8;
      padding: 12px 14px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      font-size: 12px;
      color: #BAE6FD;
      line-height: 1.6;
    }

    /* 2. 入口矩阵板块 */
    .portal-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .portal-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .portal-card:hover {
      border-color: var(--color-accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .portal-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: rgba(30, 58, 138, 0.06);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--color-accent);
      margin-bottom: 18px;
    }
    .portal-card h4 {
      font-size: 18px;
      font-weight: 600;
      color: var(--color-primary);
      margin-bottom: 8px;
    }
    .portal-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.6;
    }
    .portal-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--color-accent);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 3. 痛点阵列板块 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: #FFFFFF;
      border-top: 3px solid #EF4444;
      border-radius: var(--radius-md);
      border-left: 1px solid var(--border-color);
      border-right: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
    }
    .pain-index {
      font-size: 13px;
      font-weight: 700;
      color: #EF4444;
      margin-bottom: 12px;
      letter-spacing: 0.05em;
    }
    .pain-card h4 {
      font-size: 18px;
      font-weight: 600;
      color: var(--color-primary);
      margin-bottom: 12px;
    }
    .pain-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 4. 解决方案概览 */
    .solution-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 48px;
      box-shadow: var(--shadow-sm);
    }
    .solution-specs {
      margin-top: 24px;
      background: var(--bg-subtle);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      border-left: 3px solid var(--color-accent);
    }
    .solution-specs h5 {
      font-size: 14px;
      font-weight: 600;
      color: var(--color-primary);
      margin-bottom: 6px;
    }
    .solution-specs p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
    }
    .solution-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }

    /* 5. 核心优势六卡格 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .advantage-card:hover {
      border-color: #93C5FD;
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .adv-icon {
      font-size: 24px;
      color: var(--color-accent);
      margin-bottom: 20px;
    }
    .advantage-card h4 {
      font-size: 19px;
      font-weight: 600;
      color: var(--color-primary);
      margin-bottom: 12px;
    }
    .advantage-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 6. 功能套餐对比 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .pricing-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .pricing-card.featured {
      background: var(--color-primary);
      color: #FFFFFF;
      border-color: #334155;
      transform: scale(1.02);
      box-shadow: 0 20px 40px rgba(17, 24, 39, 0.2);
    }
    .pricing-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--color-accent);
      background: rgba(30, 58, 138, 0.1);
      display: inline-block;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 16px;
    }
    .pricing-card.featured .pricing-tag {
      background: rgba(255, 255, 255, 0.15);
      color: #93C5FD;
    }
    .pricing-title {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .pricing-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 28px;
      line-height: 1.6;
    }
    .pricing-card.featured .pricing-desc {
      color: #CBD5E1;
    }
    .pricing-features {
      list-style: none;
      margin-bottom: 32px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }
    .pricing-card.featured .pricing-features {
      border-top-color: rgba(255, 255, 255, 0.12);
    }
    .pricing-features li {
      font-size: 14px;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .pricing-features li i {
      color: #10B981;
      font-size: 13px;
    }
    .pricing-card.featured .pricing-features li i {
      color: #34D399;
    }

    /* 7. 工作流程板块 */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .flow-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      position: relative;
    }
    .flow-step-num {
      font-size: 32px;
      font-weight: 800;
      color: #E2E8F0;
      line-height: 1;
      margin-bottom: 16px;
    }
    .flow-item h4 {
      font-size: 17px;
      font-weight: 600;
      color: var(--color-primary);
      margin-bottom: 10px;
    }
    .flow-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 8. 深色硬核合规安全区 */
    .security-inner {
      border: 1px solid var(--border-dark);
      background: rgba(255, 255, 255, 0.02);
      border-radius: var(--radius-md);
      padding: 48px;
    }
    .security-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 36px;
    }
    .sec-card h4 {
      font-size: 18px;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .sec-card h4 i {
      color: #38BDF8;
      font-size: 18px;
    }
    .sec-card p {
      font-size: 14px;
      color: #94A3B8;
      line-height: 1.7;
    }

    /* 9. 数据指标统计 */
    .stats-bar {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .stats-item {
      border-right: 1px solid var(--border-color);
      padding: 0 16px;
    }
    .stats-item:last-child {
      border-right: none;
    }
    .stats-val {
      font-size: 42px;
      font-weight: 800;
      color: var(--color-primary);
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .stats-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 10. 用户故事 / 深度案例 */
    .story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .story-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .story-img {
      height: 240px;
      overflow: hidden;
    }
    .story-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .story-card:hover .story-img img {
      transform: scale(1.04);
    }
    .story-content {
      padding: 32px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .story-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--color-accent);
      margin-bottom: 12px;
    }
    .story-card h4 {
      font-size: 20px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .story-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 20px;
      flex: 1;
    }
    .story-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid var(--border-color);
      padding-top: 18px;
      font-size: 13px;
      color: var(--color-slate);
    }

    /* 11. 客户证言网格 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 13px;
      margin-bottom: 16px;
      display: flex;
      gap: 4px;
    }
    .testi-text {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--color-accent);
      font-size: 15px;
    }
    .testi-info h5 {
      font-size: 15px;
      font-weight: 600;
      color: var(--color-primary);
    }
    .testi-info span {
      font-size: 12px;
      color: var(--color-slate);
    }

    /* 12. 适用人群与多端矩阵 */
    .personas-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .persona-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      text-align: left;
    }
    .persona-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
      background: rgba(30, 58, 138, 0.08);
      color: var(--color-accent);
      margin-bottom: 14px;
    }
    .persona-card h4 {
      font-size: 17px;
      font-weight: 600;
      color: var(--color-primary);
      margin-bottom: 10px;
    }
    .persona-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 13. 资讯与法务合规风向 */
    .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: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .news-card:hover {
      border-color: #CBD5E1;
      transform: translateY(-3px);
    }
    .news-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
      font-size: 12px;
      color: var(--color-slate);
    }
    .news-type {
      background: #F1F5F9;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
      color: var(--color-primary);
    }
    .news-card h4 {
      font-size: 17px;
      font-weight: 600;
      color: var(--color-primary);
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .news-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--color-accent);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 14. 常见问题解答 FAQ */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: #93C5FD;
      box-shadow: var(--shadow-sm);
    }
    .faq-trigger {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-primary);
      cursor: pointer;
    }
    .faq-trigger i {
      font-size: 14px;
      color: var(--color-slate);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-trigger i {
      transform: rotate(180deg);
      color: var(--color-accent);
    }
    .faq-answer {
      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: 14px;
      line-height: 1.75;
    }
    .faq-item.active .faq-answer {
      max-height: 500px;
      padding-bottom: 22px;
    }

    /* 15. 转化表单区 */
    .cta-box {
      background: linear-gradient(135deg, #111625 0%, #1A2234 100%);
      border-radius: var(--radius-md);
      padding: 64px 48px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .cta-text h3 {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .cta-text p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .cta-check-list {
      list-style: none;
    }
    .cta-check-list li {
      font-size: 13px;
      color: #94A3B8;
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 10px;
    }
    .cta-check-list li i {
      color: #38BDF8;
    }
    .cta-form {
      background: #FFFFFF;
      border-radius: var(--radius-sm);
      padding: 32px;
      color: var(--text-main);
    }
    .cta-form h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 6px;
    }
    .cta-form p {
      font-size: 13px;
      color: var(--color-slate);
      margin-bottom: 20px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-input {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-input:focus {
      border-color: var(--color-accent);
      box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
    }
    .btn-submit {
      width: 100%;
      background: var(--color-primary);
      color: #FFFFFF;
      border: none;
      padding: 13px;
      border-radius: 6px;
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      transition: var(--transition);
      margin-top: 8px;
    }
    .btn-submit:hover {
      background: #1E293B;
    }

    /* 底部通用页脚 */
    .footer {
      background-color: #0B0E14;
      color: #94A3B8;
      padding: 72px 0 36px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-brand h4 {
      font-size: 20px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.75;
      color: #64748B;
      margin-bottom: 20px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 13px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-contact-info {
      font-size: 13px;
      line-height: 1.8;
      color: #94A3B8;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #CBD5E1;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .portal-grid, .pain-grid, .personas-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .advantage-grid, .pricing-grid, .security-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-box, .cta-box {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
      .stats-item {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .nav-links, .nav-action .btn-nav {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-links.mobile-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        padding: 24px;
        gap: 18px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
      }
      .hero-title {
        font-size: 32px;
      }
      .section-wrap {
        padding: 64px 0;
      }
      .section-title {
        font-size: 26px;
      }
      .portal-grid, .pain-grid, .flow-grid, .advantage-grid, .pricing-grid, .security-grid, .story-grid, .testimonial-grid, .personas-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .solution-box, .cta-box {
        padding: 28px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }