/* roulang page: index */
/* CSS 设计变量与基础重置 */
    :root {
      --color-primary: #1E2229;
      --color-primary-dark: #111317;
      --color-accent: #FF6B35;
      --color-accent-hover: #E85924;
      --color-cyan: #0EA5E9;
      --color-bg-light: #F8F9FA;
      --color-bg-gray: #F1F3F5;
      --color-bg-dark: #0F1115;
      --color-text-main: #1A1D20;
      --color-text-muted: #606770;
      --color-text-light: #94A3B8;
      --color-border: #E2E5E9;
      --color-border-dark: #272C35;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 12px 32px -4px rgba(0, 0, 0, 0.12);
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --container-max: 1200px;
    }

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

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

    body {
      font-family: var(--font-stack);
      color: var(--color-text-main);
      background-color: #FFFFFF;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
      outline: none;
    }

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

    .container-wide {
      width: 100%;
      max-width: 1320px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部导航体系（双层顶栏） */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
    }

    .top-bar {
      background: var(--color-primary-dark);
      color: #94A3B8;
      font-size: 13px;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

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

    .top-bar-info {
      display: flex;
      gap: 20px;
    }

    .top-bar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #E2E8F0;
    }

    .top-bar-badge::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #10B981;
    }

    .main-nav-bar {
      padding: 14px 0;
    }

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

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

    .logo-cube {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 800;
    }

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

    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--color-text-main);
      position: relative;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      text-align: center;
    }

    .btn-primary {
      background-color: var(--color-accent);
      color: #FFFFFF;
    }

    .btn-primary:hover {
      background-color: var(--color-accent-hover);
      box-shadow: 0 4px 14px rgba(255, 107, 53, 0.35);
    }

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

    .btn-outline:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
      background-color: var(--color-bg-light);
    }

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

    .btn-dark:hover {
      background-color: #000000;
    }

    .btn-lg {
      padding: 14px 28px;
      font-size: 16px;
      border-radius: var(--radius-md);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 22px;
      cursor: pointer;
      color: var(--color-primary);
    }

    /* 板块通用架构 */
    .section-spacing {
      padding: 88px 0;
    }

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

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

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

    .section-header {
      margin-bottom: 52px;
    }

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

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--color-accent);
      background: rgba(255, 107, 53, 0.1);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }

    .section-header.dark .section-tag {
      background: rgba(255, 107, 53, 0.2);
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.35;
      color: var(--color-primary-dark);
      margin-bottom: 14px;
    }

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

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

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

    /* 板块 1: 首屏视觉轮播区 (Hero) */
    .hero-section {
      position: relative;
      background-color: var(--color-primary-dark);
      color: #FFFFFF;
      padding: 96px 0 100px;
      overflow: hidden;
      background-image: linear-gradient(to bottom, rgba(17, 19, 23, 0.85), rgba(17, 19, 23, 0.95)), url('/assets/images/d76407002f80803c.webp');
      background-size: cover;
      background-position: center;
    }

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

    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #FFFFFF;
      letter-spacing: -0.5px;
    }

    .hero-content p {
      font-size: 17px;
      line-height: 1.75;
      color: #CBD5E1;
      margin-bottom: 32px;
    }

    .hero-location-bar {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 30px;
      padding: 6px 16px;
      font-size: 13px;
      color: #E2E8F0;
      margin-bottom: 24px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 36px;
    }

    .hero-feature-tags {
      display: flex;
      gap: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 24px;
    }

    .hero-tag-item {
      display: flex;
      flex-direction: column;
    }

    .hero-tag-value {
      font-size: 20px;
      font-weight: 700;
      color: #FFFFFF;
    }

    .hero-tag-label {
      font-size: 13px;
      color: #94A3B8;
    }

    .hero-visual-card {
      position: relative;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 14px;
      backdrop-filter: blur(10px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }

    .hero-visual-card img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .hero-floating-stat {
      position: absolute;
      bottom: 28px;
      left: 28px;
      background: rgba(17, 19, 23, 0.88);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-md);
      padding: 12px 18px;
      color: #FFFFFF;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* 板块 2: 产品与核心技术介绍区 */
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .overview-media {
      position: relative;
    }

    .overview-media img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    .tech-specs-box {
      margin-top: 24px;
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 20px;
    }

    .tech-spec-row {
      display: flex;
      justify-content: space-between;
      padding: 8px 0;
      border-bottom: 1px solid var(--color-border);
      font-size: 14px;
    }

    .tech-spec-row:last-child {
      border-bottom: none;
    }

    .tech-spec-name {
      color: var(--color-text-muted);
    }

    .tech-spec-val {
      font-weight: 600;
      color: var(--color-primary-dark);
    }

    /* 板块 3: 核心优势矩阵区 (6 卡片网格) */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .adv-card {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      transition: all 0.3s ease;
    }

    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--color-accent);
    }

    .adv-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: var(--color-bg-gray);
      color: var(--color-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 20px;
      font-weight: bold;
    }

    .adv-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--color-primary-dark);
    }

    .adv-card p {
      font-size: 15px;
      color: var(--color-text-muted);
      line-height: 1.65;
    }

    /* 板块 4: 热门功能产品与场景矩阵 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }

    .scenario-card img {
      height: 220px;
      width: 100%;
      object-fit: cover;
    }

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

    .scenario-badge {
      display: inline-block;
      align-self: flex-start;
      font-size: 12px;
      font-weight: 600;
      color: var(--color-cyan);
      background: rgba(14, 165, 233, 0.1);
      padding: 3px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }

    .scenario-body h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--color-primary-dark);
    }

    .scenario-body p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex: 1;
    }

    .scenario-list {
      list-style: none;
      padding-top: 14px;
      border-top: 1px solid var(--color-border);
      font-size: 13px;
      color: var(--color-primary);
    }

    .scenario-list li {
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .scenario-list li::before {
      content: "✓";
      color: #10B981;
      font-weight: bold;
    }

    /* 板块 5: 深色沉浸式案例与设计理念区 */
    .immersion-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .immersion-image-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--color-border-dark);
    }

    .immersion-image-box img {
      width: 100%;
      height: 440px;
      object-fit: cover;
    }

    .immersion-details h3 {
      font-size: 26px;
      color: #FFFFFF;
      margin-bottom: 18px;
      line-height: 1.4;
    }

    .immersion-details p {
      color: #94A3B8;
      font-size: 15px;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .render-pillars {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .pillar-item {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--color-border-dark);
      padding: 16px;
      border-radius: var(--radius-md);
    }

    .pillar-item h4 {
      font-size: 15px;
      color: #F8FAFC;
      margin-bottom: 6px;
    }

    .pillar-item span {
      font-size: 13px;
      color: #64748B;
    }

    /* 板块 6: 行业应用与用户故事区 */
    .timeline-stories {
      display: flex;
      flex-direction: column;
      gap: 40px;
    }

    .story-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 32px;
    }

    .story-item:nth-child(even) {
      direction: rtl;
    }

    .story-item:nth-child(even) .story-text {
      direction: ltr;
    }

    .story-item:nth-child(even) .story-img {
      direction: ltr;
    }

    .story-img img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 280px;
      object-fit: cover;
    }

    .story-step {
      font-size: 13px;
      font-weight: 700;
      color: var(--color-accent);
      margin-bottom: 8px;
    }

    .story-text h3 {
      font-size: 22px;
      font-weight: 700;
      color: var(--color-primary-dark);
      margin-bottom: 12px;
    }

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

    .story-quote {
      border-left: 3px solid var(--color-accent);
      padding-left: 14px;
      font-style: italic;
      color: var(--color-primary);
      font-size: 14px;
    }

    /* 板块 7: 关键量化数据统计条 */
    .metrics-bar {
      background: var(--color-primary-dark);
      border-top: 1px solid var(--color-border-dark);
      border-bottom: 1px solid var(--color-border-dark);
      padding: 64px 0;
      color: #FFFFFF;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .metric-number {
      font-size: 44px;
      font-weight: 800;
      color: var(--color-accent);
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: monospace, sans-serif;
    }

    .metric-title {
      font-size: 16px;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 4px;
    }

    .metric-sub {
      font-size: 13px;
      color: #94A3B8;
    }

    /* 板块 8: 客户口碑与评价墙 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 32px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }

    .rating-stars {
      color: #F59E0B;
      font-size: 16px;
      margin-bottom: 16px;
      letter-spacing: 2px;
    }

    .testimonial-content {
      font-size: 15px;
      color: var(--color-text-main);
      line-height: 1.7;
      flex: 1;
      margin-bottom: 24px;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--color-border);
      padding-top: 16px;
    }

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--color-bg-gray);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--color-primary);
    }

    .reviewer-info h4 {
      font-size: 15px;
      color: var(--color-primary-dark);
      font-weight: 600;
    }

    .reviewer-info span {
      font-size: 13px;
      color: var(--color-text-muted);
    }

    /* 板块 9: 版本对比与套餐方案区 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }

    .pricing-card {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 40px 32px;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .pricing-card.featured {
      border: 2px solid var(--color-accent);
      box-shadow: var(--shadow-lg);
      transform: scale(1.03);
      z-index: 2;
    }

    .pricing-ribbon {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--color-accent);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
    }

    .plan-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--color-primary-dark);
      margin-bottom: 8px;
    }

    .plan-desc {
      font-size: 14px;
      color: var(--color-text-muted);
      margin-bottom: 24px;
    }      min-height: 48px;
    }

    .plan-price {
      font-size: 38px;
      font-weight: 800;
      color: var(--color-primary-dark);
      margin-bottom: 24px;
      display: flex;
      align-items: baseline;
    }

    .plan-price span {
      font-size: 14px;
      font-weight: 400;
      color: var(--color-text-muted);
      margin-left: 6px;
    }

    .plan-features {
      list-style: none;
      margin-bottom: 32px;
      flex: 1;
    }

    .plan-features li {
      font-size: 14px;
      color: var(--color-text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .plan-features li::before {
      content: "•";
      color: var(--color-accent);
      font-weight: bold;
      font-size: 18px;
      line-height: 1;
    }

    /* 板块 10: 内嵌资讯与设计趋势模块 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .insight-card {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }

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

    .insight-card img {
      height: 200px;
      width: 100%;
      object-fit: cover;
    }

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

    .insight-date {
      font-size: 13px;
      color: var(--color-cyan);
      font-weight: 600;
      margin-bottom: 10px;
    }

    .insight-body h3 {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.45;
      color: var(--color-primary-dark);
      margin-bottom: 12px;
    }

    .insight-body p {
      font-size: 14px;
      color: var(--color-text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }

    .insight-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--color-accent);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块 11: 常见疑问解答手风琴区 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color 0.2s ease;
    }

    .faq-item:hover {
      border-color: #CBD5E1;
    }

    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 22px 28px;
      font-size: 17px;
      font-weight: 700;
      color: var(--color-primary-dark);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 20px;
      color: var(--color-text-muted);
      transition: transform 0.25s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: var(--color-bg-light);
      padding: 0 28px;
      color: var(--color-text-muted);
      font-size: 15px;
      line-height: 1.75;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 28px 24px;
      border-top: 1px solid var(--color-border);
    }

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

    /* 板块 12: 底部沉浸转化行动区 */
    .cta-box {
      background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1A2130 100%);
      border-radius: var(--radius-lg);
      padding: 64px 48px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--color-border-dark);
    }

    .cta-text h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .cta-text p {
      font-size: 16px;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .cta-features {
      display: flex;
      gap: 20px;
      font-size: 14px;
      color: #E2E8F0;
    }

    .cta-features span {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .cta-form {
      background: #FFFFFF;
      padding: 32px;
      border-radius: var(--radius-md);
      color: var(--color-primary-dark);
    }

    .cta-form h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 16px;
      text-align: center;
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-input {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--color-text-main);
      background: #FFFFFF;
    }

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

    /* 统一页脚 */
    .site-footer {
      background-color: var(--color-primary-dark);
      color: #94A3B8;
      font-size: 14px;
      padding-top: 64px;
      border-top: 1px solid var(--color-border-dark);
    }

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

    .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: 14px;
      line-height: 1.7;
      margin-bottom: 18px;
      color: #64748B;
    }

    .footer-col h5 {
      font-size: 15px;
      font-weight: 600;
      color: #F8FAFC;
      margin-bottom: 18px;
    }

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

    .footer-links li {
      margin-bottom: 10px;
    }

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

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

    .footer-contact-item {
      margin-bottom: 10px;
      color: #94A3B8;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 24px 0;
      text-align: center;
      font-size: 13px;
      color: #64748B;
    }

    .footer-bottom-links {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 10px;
    }

    /* 移动端与平板响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid,
      .overview-grid,
      .immersion-wrapper,
      .cta-box {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .advantages-grid,
      .scenarios-grid,
      .testimonials-grid,
      .pricing-grid,
      .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .pricing-card.featured {
        transform: none;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        gap: 16px;
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .advantages-grid,
      .scenarios-grid,
      .testimonials-grid,
      .pricing-grid,
      .insights-grid,
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .story-item {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .story-item:nth-child(even) {
        direction: ltr;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .cta-box {
        padding: 36px 20px;
      }
      .cta-features {
        flex-direction: column;
        gap: 8px;
      }
    }