/* roulang page: index */
:root {
      --primary: #4F46E5;
      --primary-hover: #4338CA;
      --primary-light: #EEF2FF;
      --accent: #06B6D4;
      --accent-hover: #0891B2;
      --text-main: #0F172A;
      --text-regular: #334155;
      --text-muted: #64748B;
      --bg-white: #FFFFFF;
      --bg-light: #F8FAFC;
      --bg-subtle: #F1F5F9;
      --bg-dark: #0B0F19;
      --bg-dark-card: #151D2F;
      --border: #E2E8F0;
      --border-dark: #1E293B;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
      --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 12px 28px -6px rgba(15, 23, 42, 0.12);
      --shadow-xl: 0 20px 36px -8px rgba(79, 70, 229, 0.18);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-regular);
      background-color: var(--bg-white);
      line-height: 1.7;
      overflow-x: hidden;
    }

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

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

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

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

    .section {
      padding: 96px 0;
      position: relative;
    }

    .section-sm {
      padding: 64px 0;
    }

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

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

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

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 56px auto;
    }

    .badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      background: var(--primary-light);
      color: var(--primary);
      margin-bottom: 16px;
    }

    .badge-tag.dark {
      background: rgba(6, 182, 212, 0.12);
      color: var(--accent);
      border: 1px solid rgba(6, 182, 212, 0.25);
    }

    .section-title {
      font-size: 34px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

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

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 13px 28px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      gap: 8px;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
    }

    .btn-accent {
      background-color: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
    }

    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
    }

    .btn-outline {
      border: 1px solid var(--border);
      background: var(--bg-white);
      color: var(--text-main);
    }

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

    .btn-outline-dark {
      border: 1px solid var(--border-dark);
      background: rgba(255, 255, 255, 0.04);
      color: #F8FAFC;
    }

    .btn-outline-dark:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: rgba(6, 182, 212, 0.08);
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }

    .top-bar {
      background: var(--bg-dark);
      color: #94A3B8;
      font-size: 12px;
      padding: 8px 0;
    }

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

    .top-bar-tags {
      display: flex;
      gap: 16px;
    }

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

    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
    }

    .brand-logo .logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 900;
      font-size: 18px;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-regular);
      position: relative;
      padding: 6px 0;
    }

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

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

    /* 移动端菜单按钮 */
    .mobile-toggle {
      display: none;
      background: transparent;
      font-size: 22px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 首屏 Hero 区块 */
    .hero-section {
      background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
      padding: 70px 0 90px;
      position: relative;
      overflow: hidden;
    }

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

    .hero-content h1 {
      font-size: 42px;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 20px;
    }

    .hero-content h1 span {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 16px;
      color: var(--text-regular);
      line-height: 1.75;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
      flex-wrap: wrap;
    }

    .hero-badges-row {
      display: flex;
      align-items: center;
      gap: 24px;
      padding-top: 24px;
      border-top: 1px solid var(--border);
    }

    .hero-badge-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    .hero-badge-item svg {
      width: 18px;
      height: 18px;
      color: var(--primary);
      flex-shrink: 0;
    }

    .hero-quiz-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      padding: 32px;
      box-shadow: var(--shadow-xl);
      position: relative;
    }

    .quiz-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .quiz-sub {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

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

    .quiz-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .quiz-group select, .quiz-group input {
      width: 100%;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 0 12px;
      font-size: 14px;
      color: var(--text-regular);
      background-color: var(--bg-light);
      transition: var(--transition);
    }

    .quiz-group select:focus, .quiz-group input:focus {
      border-color: var(--primary);
      background-color: #FFF;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
    }

    .quiz-result-box {
      background: var(--primary-light);
      border-radius: var(--radius-md);
      padding: 14px 16px;
      margin-top: 18px;
      border-left: 4px solid var(--primary);
    }

    .quiz-result-box .label {
      font-size: 12px;
      color: var(--primary);
      font-weight: 700;
      text-transform: uppercase;
    }

    .quiz-result-box .val {
      font-size: 14px;
      color: var(--text-main);
      font-weight: 600;
      margin-top: 2px;
    }

    /* 卖点三连透传区 */
    .pillar-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .pillar-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }

    .pillar-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-xl);
      border-color: rgba(6, 182, 212, 0.4);
    }

    .pillar-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 22px;
    }

    .pillar-icon svg {
      width: 28px;
      height: 28px;
    }

    .pillar-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .pillar-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .pillar-stat {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .pillar-stat span {
      font-size: 13px;
      font-weight: 500;
      color: var(--text-muted);
    }

    /* 品牌产品图文背书区 */
    .dual-feature-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .feature-img-wrapper {
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }

    .feature-img-wrapper img {
      width: 100%;
      height: 420px;
      object-fit: cover;
      transition: transform 0.6s ease;
    }

    .feature-img-wrapper:hover img {
      transform: scale(1.03);
    }

    .feature-highlight-card {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      padding: 18px 24px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #FFFFFF;
      display: flex;
      justify-content: space-around;
    }

    .highlight-item {
      text-align: center;
    }

    .highlight-item .val {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent);
    }

    .highlight-item .txt {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 2px;
    }

    .feature-text-block h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 20px;
    }

    .feature-text-block p {
      font-size: 15px;
      color: var(--text-regular);
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .spec-check-list {
      list-style: none;
      margin-bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .spec-check-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    .spec-check-item svg {
      width: 18px;
      height: 18px;
      color: var(--accent);
      flex-shrink: 0;
    }

    /* 核心优势矩阵卡片 (2x3) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .advantage-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 30px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }

    .advantage-card:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }

    .advantage-card .num-badge {
      font-size: 12px;
      font-weight: 800;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 14px;
    }

    .advantage-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

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

    /* 热门解决方案场景 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .scene-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .scene-card:hover {
      box-shadow: var(--shadow-xl);
      transform: translateY(-5px);
    }

    .scene-thumb {
      height: 200px;
      position: relative;
      overflow: hidden;
    }

    .scene-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .scene-card:hover .scene-thumb img {
      transform: scale(1.05);
    }

    .scene-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.85);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
    }

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

    .scene-body h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

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

    .scene-features {
      list-style: none;
      margin-bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      flex: 1;
    }

    .scene-feature-item {
      font-size: 13px;
      color: var(--text-regular);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .scene-feature-item::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
    }

    /* 深色沉浸案例区 */
    .dark-showcase-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .dark-card {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-xl);
      padding: 36px;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
    }

    .dark-card-title {
      font-size: 22px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
    }

    .dark-timeline {
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin: 24px 0;
    }

    .timeline-node {
      display: flex;
      gap: 16px;
    }

    .node-num {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(6, 182, 212, 0.15);
      border: 1px solid var(--accent);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 12px;
      flex-shrink: 0;
    }

    .node-content h4 {
      font-size: 15px;
      color: #FFFFFF;
      font-weight: 600;
      margin-bottom: 4px;
    }

    .node-content p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 标杆客户对比实践区 */
    .compare-box {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .compare-side {
      padding: 24px;
      border-radius: var(--radius-lg);
    }

    .compare-side.legacy {
      background: #FEF2F2;
      border: 1px solid #FEE2E2;
    }

    .compare-side.digital {
      background: var(--primary-light);
      border: 1px solid rgba(79, 70, 229, 0.2);
    }

    .compare-side h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .compare-side.legacy h4 { color: #991B1B; }
    .compare-side.digital h4 { color: var(--primary); }

    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 14px;
    }

    .compare-list li {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .legacy .compare-list li { color: #7F1D1D; }
    .digital .compare-list li { color: var(--text-main); font-weight: 600; }

    /* 数据统计条 */
    .stats-bar-wrapper {
      background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
      color: #FFFFFF;
      padding: 56px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .stat-item {
      position: relative;
    }

    .stat-item:not(:last-child)::after {
content: "";
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background: rgba(255, 255, 255, 0.15);
    }

    .stat-number {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.1;
      margin-bottom: 8px;
      background: linear-gradient(135deg, #FFFFFF 20%, var(--accent) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .stat-label {
      font-size: 14px;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 客户与行业评价区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testimonial-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

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

    .quote-content {
      font-size: 14px;
      color: var(--text-regular);
      line-height: 1.8;
      margin-bottom: 24px;
      position: relative;
    }

    .stars-row {
      color: #F59E0B;
      font-size: 14px;
      margin-bottom: 12px;
    }

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

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }

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

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

    /* 资讯洞察区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

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

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

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

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

    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }

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

    .news-meta-row {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }

    .news-tag {
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .news-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      flex: 1;
    }

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: var(--primary);
    }

    .faq-header {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      user-select: none;
    }

    .faq-icon {
      width: 20px;
      height: 20px;
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
      background: var(--bg-light);
    }

    .faq-body-inner {
      padding: 20px 24px;
      font-size: 14px;
      color: var(--text-regular);
      line-height: 1.75;
      border-top: 1px solid var(--border);
    }

    /* 终极转化与服务保障双列区 */
    .cta-dual-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .cta-info-box h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 18px;
    }

    .cta-info-box p {
      font-size: 15px;
      color: var(--text-regular);
      line-height: 1.75;
      margin-bottom: 30px;
    }

    .guarantee-badges {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .guarantee-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 16px;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .guarantee-icon {
      width: 36px;
      height: 36px;
      border-radius: var(--radius-sm);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .guarantee-text .title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .conversion-form-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      padding: 36px;
      box-shadow: var(--shadow-xl);
    }

    .form-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-subtitle {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

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

    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 0 14px;
      font-size: 14px;
      color: var(--text-regular);
      background-color: var(--bg-light);
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary);
      background-color: #FFF;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
    }

    textarea.form-control {
      height: 84px;
      padding: 10px 14px;
      resize: vertical;
    }

    /* 悬浮轻量吸底条 */
    .sticky-dock {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 900;
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 12px 0;
      transform: translateY(100%);
      transition: transform 0.35s ease;
    }

    .sticky-dock.active {
      transform: translateY(0);
    }

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

    .sticky-text {
      color: #FFFFFF;
      font-size: 14px;
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .sticky-text span {
      color: var(--accent);
      font-weight: 700;
    }

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

    .btn-close-dock {
      background: transparent;
      color: #94A3B8;
      font-size: 20px;
      cursor: pointer;
      padding: 4px;
    }

    /* 页脚 Footer */
    .site-footer {
      background: var(--bg-dark);
      color: #94A3B8;
      padding: 72px 0 32px;
      border-top: 1px solid var(--border-dark);
    }

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

    .footer-brand h3 {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
    }

    .footer-brand p {
      font-size: 13px;
      line-height: 1.8;
      color: #94A3B8;
      margin-bottom: 20px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
    }

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

    .footer-links a {
      font-size: 13px;
      color: #94A3B8;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .pillar-grid, .advantage-grid, .scene-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-grid, .dual-feature-grid, .dark-showcase-grid, .compare-grid, .cta-dual-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .stat-item:nth-child(2)::after {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        display: none;
        gap: 18px;
      }
      .nav-menu.open {
        display: flex;
      }
      .nav-btn-pc {
        display: none;
      }
      .pillar-grid, .advantage-grid, .scene-grid, .testimonial-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-content h1 {
        font-size: 30px;
      }
      .section-title {
        font-size: 26px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .sticky-text {
        font-size: 12px;
      }
    }