/* roulang page: index */
:root {
      --primary: #0F2744;
      --primary-dark: #0A1B30;
      --primary-light: #1A3D68;
      --accent: #10B981;
      --accent-hover: #059669;
      --cyan: #0EA5E9;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-dark: #0B132B;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border: #E2E8F0;
      --border-dark: #1E293B;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    }

    * {
      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", "WenQuanYi Micro Hei", system-ui, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    @media (min-width: 768px) {
      .container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }

    /* 顶部服务栏 */
    .top-bar {
      background-color: var(--primary-dark);
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-bar-badges {
      display: flex;
      gap: 1.25rem;
      align-items: center;
    }
    .top-bar-badges span {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
    }
    .top-bar-badges span::before {
      content: "";
      width: 6px;
      height: 6px;
      background-color: var(--accent);
      border-radius: 50%;
      display: inline-block;
    }

    /* 导航栏 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      transition: all 0.3s ease;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 4.5rem;
    }
    .logo-wrapper {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .logo-badge {
      width: 2.5rem;
      height: 2.5rem;
      background: linear-gradient(135deg, var(--primary), var(--cyan));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 800;
      font-size: 1.25rem;
      box-shadow: 0 4px 10px rgba(15, 39, 68, 0.2);
    }
    .brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-sub {
      display: block;
      font-size: 0.75rem;
      font-weight: 500;
      color: var(--text-muted);
      letter-spacing: 0.05em;
    }
    .nav-menu {
      display: none;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }
    @media (min-width: 1024px) {
      .nav-menu {
        display: flex;
      }
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--text-body);
      position: relative;
      padding: 0.5rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link:hover::after, .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--accent);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.65rem 1.4rem;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
      min-height: 44px;
      min-width: 44px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 12px rgba(15, 39, 68, 0.15);
    }
    .btn-primary:hover {
      background-color: var(--primary-light);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.25);
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(16, 185, 129, 0.35);
    }
    .btn-outline {
      border-color: var(--border);
      background-color: #FFF;
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: #F8FAFC;
    }
    .btn-dark-outline {
      border-color: rgba(255, 255, 255, 0.2);
      background-color: rgba(255, 255, 255, 0.05);
      color: #FFF;
    }
    .btn-dark-outline:hover {
      background-color: rgba(255, 255, 255, 0.15);
      border-color: #FFF;
    }

    /* 汉堡按钮 */
    .menu-toggle {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 44px;
      height: 44px;
      background: none;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      cursor: pointer;
      padding: 10px;
    }
    @media (min-width: 1024px) {
      .menu-toggle {
        display: none;
      }
    }
    .menu-toggle span {
      width: 100%;
      height: 2px;
      background-color: var(--text-main);
      transition: all 0.2s ease;
    }
    .mobile-drawer {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      width: 100%;
      background-color: #FFF;
      border-bottom: 2px solid var(--border);
      box-shadow: var(--shadow-xl);
      padding: 1.5rem;
    }
    .mobile-drawer.open {
      display: block;
    }
    .mobile-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .mobile-nav-list a {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      display: block;
      padding: 0.5rem 0;
      border-bottom: 1px solid #F1F5F9;
    }

    /* 板块结构样式 */
    .section-padding {
      padding: 5rem 0;
    }
    @media (min-width: 768px) {
      .section-padding {
        padding: 6.5rem 0;
      }
    }
    .bg-white {
      background-color: #FFFFFF;
    }
    .bg-light {
      background-color: #F8FAFC;
    }
    .bg-dark-section {
      background-color: var(--bg-dark);
      color: #E2E8F0;
    }

    .section-header {
      margin-bottom: 3.5rem;
      max-width: 820px;
    }
    .section-header.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .tag-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      padding: 0.3rem 0.85rem;
      border-radius: 9999px;
      background-color: rgba(16, 185, 129, 0.12);
      color: #065F46;
      margin-bottom: 1rem;
    }
    .tag-badge.dark {
      background-color: rgba(14, 165, 233, 0.15);
      color: #38BDF8;
      border: 1px solid rgba(56, 189, 248, 0.2);
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 1rem;
      letter-spacing: -0.015em;
    }
    @media (min-width: 768px) {
      .section-title {
        font-size: 2.45rem;
      }
    }
    .section-title.white {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .section-desc.light {
      color: #94A3B8;
    }

    /* 1. Hero 板块：线索获客提问式首屏 */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #0A1B30 0%, #0F2744 100%);
      color: #FFF;
      padding: 4.5rem 0 5.5rem;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.12;
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr;
      gap: 3rem;
      align-items: center;
    }
    @media (min-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1.15fr 0.85fr;
        gap: 4rem;
      }
    }
    .hero-content h1 {
      font-size: 2.25rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    @media (min-width: 768px) {
      .hero-content h1 {
        font-size: 3.1rem;
      }
    }
    .hero-content h1 span {
      background: linear-gradient(135deg, #34D399 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-pain-point {
      font-size: 1.25rem;
      font-weight: 600;
      color: #F8FAFC;
      margin-bottom: 1rem;
      padding-left: 1rem;
      border-left: 4px solid var(--accent);
    }
    .hero-desc {
      font-size: 1.05rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .hero-meta-points {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1rem;
      margin-bottom: 2rem;
    }
    .hero-meta-item {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.9375rem;
      color: #E2E8F0;
    }
    .hero-meta-item svg {
      width: 18px;
      height: 18px;
      color: var(--accent);
      flex-shrink: 0;
    }
    
    /* 首屏获客卡片 */
    .hero-form-card {
      background-color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      color: var(--text-main);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .hero-form-card h3 {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 0.5rem;
    }
    .hero-form-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      line-height: 1.6;
    }
    .form-group {
      margin-bottom: 1.15rem;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: #1E293B;
      margin-bottom: 0.35rem;
    }
    .form-control {
      width: 100%;
      height: 44px;
      padding: 0 0.85rem;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      background-color: #F8FAFC;
      color: var(--text-main);
      transition: all 0.2s ease;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background-color: #FFF;
      box-shadow: 0 0 0 3px rgba(15, 39, 68, 0.1);
    }
    .form-submit-btn {
      width: 100%;
      height: 48px;
      background-color: var(--primary);
      color: #FFF;
      font-weight: 700;
      font-size: 1rem;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
      margin-top: 0.5rem;
    }
    .form-submit-btn:hover {
      background-color: var(--primary-light);
    }

    /* 2. 分类入口矩阵 (#categories) */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(1, 1fr);
      gap: 1.5rem;
    }
    @media (min-width: 640px) {
      .category-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (min-width: 1024px) {
      .category-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }
    .category-card {
      background-color: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
    }
    .category-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-xl);
      border-color: var(--accent);
    }
    .category-icon {
      width: 3.25rem;
      height: 3.25rem;
      border-radius: var(--radius-sm);
      background-color: rgba(15, 39, 68, 0.05);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
    }
    .category-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.65rem;
    }
    .category-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
    }
    .category-arrow {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }
    .category-card:hover .category-arrow {
      color: var(--accent-hover);
    }

    /* 3. 精选推荐与功能亮点 (#features) */
    .feature-layout {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    @media (min-width: 768px) {
      .feature-layout {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (min-width: 1024px) {
      .feature-layout {
        grid-template-columns: repeat(3, 1fr);
      }
    }
    .feature-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      padding: 2rem;
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-xl);
      border-color: #CBD5E1;
    }
    .feature-badge {
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.2rem 0.55rem;
      border-radius: 4px;
      background-color: #F1F5F9;
      color: var(--text-muted);
      display: inline-block;
      margin-bottom: 1rem;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .feature-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }
    .feature-meta {
      border-top: 1px solid #F1F5F9;
      padding-top: 1rem;
      font-size: 0.8125rem;
      color: #94A3B8;
      display: flex;
      justify-content: space-between;
    }

    /* 4. 高校落地资讯与政策解读 (#news) */
    .news-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    @media (min-width: 768px) {
      .news-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-xl);
    }
    .news-thumb {
      height: 180px;
      position: relative;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-tag {
      position: absolute;
      top: 1rem;
      left: 1rem;
      background: rgba(15, 39, 68, 0.85);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.25rem 0.65rem;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .news-body {
      padding: 1.75rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-body h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.5;
    }
    .news-body p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
    }
    .news-foot {
      font-size: 0.8125rem;
      color: #94A3B8;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid #F1F5F9;
      padding-top: 0.85rem;
    }

    /* 5. 核心模块与教务效能排行榜 (#ranking) */
    .ranking-container {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    @media (min-width: 1024px) {
      .ranking-container {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
      }
    }
    .ranking-box {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      box-shadow: var(--shadow-sm);
    }
    .ranking-box h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 1.5rem;
      display: flex;
      align-items: center;
      gap: 0.65rem;
    }
    .ranking-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }
    .ranking-item {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      padding-bottom: 1.25rem;
      border-bottom: 1px solid #F1F5F9;
    }
    .ranking-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .ranking-num {
      width: 2rem;
      height: 2rem;
      border-radius: var(--radius-sm);
      background-color: #F1F5F9;
      color: var(--text-muted);
      font-weight: 800;
      font-size: 0.9375rem;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-family: var(--font-mono);
    }
    .ranking-item:nth-child(1) .ranking-num {
      background-color: #FEF3C7;
      color: #D97706;
    }
    .ranking-item:nth-child(2) .ranking-num {
      background-color: #E0E7FF;
      color: #4F46E5;
    }
    .ranking-item:nth-child(3) .ranking-num {
      background-color: #DCFCE7;
      color: #15803D;
    }
    .ranking-info h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.35rem;
    }
    .ranking-info p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .ranking-rate {
      margin-left: auto;
      text-align: right;
      flex-shrink: 0;
    }
    .ranking-rate span {
      display: block;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      font-family: var(--font-mono);
    }
    .ranking-rate small {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 6. 成功案例与实施故事 (#cases) */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2.5rem;
    }
    @media (min-width: 1024px) {
      .cases-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .case-card:hover {
      box-shadow: var(--shadow-xl);
      border-color: #CBD5E1;
    }
    .case-img-box {
      height: 240px;
      position: relative;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-body {
      padding: 2.25rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-tags {
      display: flex;
      gap: 0.5rem;
      margin-bottom: 1rem;
    }
    .case-tags span {
      font-size: 0.75rem;
      padding: 0.25rem 0.65rem;
      background-color: #F1F5F9;
      color: var(--text-body);
      border-radius: 4px;
      font-weight: 600;
    }
    .case-body h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 0.85rem;
    }
    .case-body p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .case-metrics-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1rem;
      padding-top: 1.25rem;
      border-top: 1px solid #F1F5F9;
      text-align: center;
    }
    .case-metric-val {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--accent);
      font-family: var(--font-mono);
    }
    .case-metric-label {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 7. 深色理念区与数据技术底座 (#tech-core) */
    .tech-core-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2.5rem;
      align-items: center;
    }
    @media (min-width: 1024px) {
      .tech-core-grid {
        grid-template-columns: 1.1fr 0.9fr;
      }
    }
    .tech-spec-list {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.5rem;
    }
    @media (min-width: 640px) {
      .tech-spec-list {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    .tech-spec-card {
      background-color: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      transition: all 0.3s ease;
    }
    .tech-spec-card:hover {
      background-color: rgba(255, 255, 255, 0.07);
      border-color: rgba(56, 189, 248, 0.3);
    }
    .tech-spec-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .tech-spec-card p {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.65;
    }
    .tech-visual-card {
      background: radial-gradient(circle at top right, #1E293B, #0F172A);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 2rem;
      position: relative;
    }
    .tech-pipeline-step {
      display: flex;
      gap: 1.25rem;
      margin-bottom: 1.5rem;
      position: relative;
    }
    .tech-pipeline-step:last-child {
      margin-bottom: 0;
    }
    .tech-step-icon {
      width: 2.75rem;
      height: 2.75rem;
      border-radius: 50%;
      background-color: rgba(16, 185, 129, 0.15);
      border: 1px solid rgba(16, 185, 129, 0.3);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      flex-shrink: 0;
    }
    .tech-step-body h5 {
      font-size: 1.05rem;
      color: #F8FAFC;
      margin-bottom: 0.25rem;
    }
    .tech-step-body p {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.5;
    }

    /* 8. 关键成效数据统计条 (#statistics) */
    .stats-bar {
      background-color: var(--primary);
      border-radius: var(--radius-lg);
      padding: 3rem 2rem;
      box-shadow: var(--shadow-xl);
      color: #FFF;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 2rem;
      text-align: center;
    }
    @media (min-width: 1024px) {
      .stats-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }
    .stat-number {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1;
      margin-bottom: 0.65rem;
      font-family: var(--font-mono);
      background: linear-gradient(135deg, #FFFFFF 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .stat-label {
      font-size: 0.9375rem;
      color: #CBD5E1;
      font-weight: 500;
    }

    /* 9. 产品多维规格参数速览 (#specs) */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }
    .specs-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 720px;
      text-align: left;
    }
    .specs-table th, .specs-table td {
      padding: 1.15rem 1.5rem;
      border-bottom: 1px solid var(--border);
    }
    .specs-table th {
      background-color: #F8FAFC;
      font-weight: 700;
      color: var(--primary);
      font-size: 0.9375rem;
    }
    .specs-table tr:last-child td {
      border-bottom: none;
    }
    .specs-table tr:hover td {
      background-color: #F8FAFC;
    }
    .specs-module-name {
      font-weight: 700;
      color: var(--text-main);
    }
    .status-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.2rem 0.5rem;
      border-radius: 4px;
      background-color: #DCFCE7;
      color: #166534;
    }

    /* 10. 适用场景矩阵与应用拆解 (#scenarios) */
    .scenarios-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 1.75rem;
    }
    @media (min-width: 768px) {
      .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (min-width: 1024px) {
      .scenarios-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }
    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .scenario-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .scenario-head {
      margin-bottom: 1rem;
    }
    .scenario-head h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .scenario-head span {
      font-size: 0.8125rem;
      color: var(--accent);
      font-weight: 600;
    }
    .scenario-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
    }
    .scenario-checklist {
      list-style: none;
      font-size: 0.8125rem;
      color: var(--text-body);
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
    }
    .scenario-checklist li {
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }
    .scenario-checklist li::before {
      content: "✓";
      color: var(--accent);
      font-weight: 800;
    }

    /* 11. 功能对比与版本选型 (#comparison) */
    .pricing-table-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    @media (min-width: 1024px) {
      .pricing-table-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }
    .pricing-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      padding: 2.25rem;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
    }
    .pricing-card.featured {
      border-color: var(--accent);
      box-shadow: 0 12px 30px -10px rgba(16, 185, 129, 0.2);
      transform: scale(1.02);
    }
    @media (max-width: 1023px) {
      .pricing-card.featured {
        transform: none;
      }
    }
    .featured-tag {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.25rem 0.85rem;
      border-radius: 9999px;
    }
    .pricing-title {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .pricing-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      min-height: 2.6rem;
    }
    .pricing-feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      margin-bottom: 2rem;
      flex-grow: 1;
    }
    .pricing-feature-list li {
      font-size: 0.875rem;
      color: var(--text-body);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .pricing-feature-list li.dimmed {
      color: #94A3B8;
      text-decoration: line-through;
    }

    /* 12. 院校口碑与评价墙 (#testimonials) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    @media (min-width: 768px) {
      .testimonial-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 1.5rem;
      position: relative;
    }
    .testimonial-quote::before {
      content: "“";
      font-size: 2.5rem;
      color: #CBD5E1;
      line-height: 0;
      position: absolute;
      top: 0.5rem;
      left: -0.75rem;
      opacity: 0.3;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      border-top: 1px solid #F1F5F9;
      padding-top: 1rem;
    }
    .author-avatar {
      width: 2.75rem;
      height: 2.75rem;
      border-radius: 50%;
      background-color: var(--primary-light);
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9375rem;
    }
    .author-info h5 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 13. 合作伙伴与院校生态 (#partners) */
    .partner-logo-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.25rem;
      align-items: center;
    }
    @media (min-width: 640px) {
      .partner-logo-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }
    @media (min-width: 1024px) {
      .partner-logo-grid {
        grid-template-columns: repeat(6, 1fr);
      }
    }
    .partner-badge-item {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 1.25rem 0.75rem;
      text-align: center;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-muted);
      transition: all 0.2s ease;
    }
    .partner-badge-item:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: #F8FAFC;
    }

    /* 14. 平台保障与安全认证条 (#guarantee) */
    .guarantee-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    @media (min-width: 768px) {
      .guarantee-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }
    .guarantee-item {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
    }
    .guarantee-icon {
      width: 2.75rem;
      height: 2.75rem;
      border-radius: var(--radius-sm);
      background-color: rgba(16, 185, 129, 0.1);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .guarantee-text h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.25rem;
    }
    .guarantee-text p {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 15. 收口行动转化与演示预约区 (#trial) */
    .cta-container {
      background: linear-gradient(135deg, #0F2744 0%, #0A1B30 100%);
      border-radius: var(--radius-xl);
      padding: 3rem 1.5rem;
      color: #FFF;
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    @media (min-width: 768px) {
      .cta-container {
        padding: 4.5rem 3.5rem;
      }
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 3rem;
      align-items: center;
      position: relative;
      z-index: 1;
    }
    @media (min-width: 1024px) {
      .cta-grid {
        grid-template-columns: 1.1fr 0.9fr;
      }
    }
    .cta-text-side h2 {
      font-size: 2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1rem;
      color: #FFF;
    }
    @media (min-width: 768px) {
      .cta-text-side h2 {
        font-size: 2.5rem;
      }
    }
    .cta-text-side p {
      font-size: 1.05rem;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 1.75rem;
    }
    .cta-checklist {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .cta-checklist li {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 0.9375rem;
      color: #E2E8F0;
    }
    .cta-checklist li span {
      color: var(--accent);
      font-weight: 800;
    }
    .cta-form-card {
      background-color: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 2.25rem;
      color: var(--text-main);
      box-shadow: var(--shadow-xl);
    }
    .cta-form-card h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 0.35rem;
    }
    .cta-form-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
    }

    /* 页脚系统规范 (Footer) */
    .site-footer {
      background-color: var(--bg-dark);
      color: #94A3B8;
      padding: 5rem 0 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 3rem;
      margin-bottom: 4rem;
    }
    @media (min-width: 640px) {
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (min-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1.5fr 1fr 1.2fr 1.3fr;
        gap: 2.5rem;
      }
    }
    .footer-brand h4 {
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFF;
      margin-bottom: 1rem;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 1.5rem;
      color: #94A3B8;
    }
    .footer-nav-col h5, .footer-contact-col h5, .footer-cert-col h5 {
      font-size: 1rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 1.25rem;
    }
    .footer-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-nav-list a:hover {
      color: #FFF;
      padding-left: 4px;
    }
    .footer-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 0.5rem;
    }
    .footer-badges {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .badge-item {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(255, 255, 255, 0.05);
      padding: 0.5rem 0.85rem;
      border-radius: var(--radius-sm);
      font-size: 0.8125rem;
      color: #CBD5E1;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 2rem;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      text-align: center;
    }
    @media (min-width: 768px) {
      .footer-bottom {
        flex-direction: row;
        text-align: left;
      }
    }
    .footer-bottom p {
      font-size: 0.8125rem;
      color: #64748B;
    }
    .footer-bottom-links {
      display: flex;
      gap: 1.5rem;
      font-size: 0.8125rem;
    }
    .footer-bottom-links a:hover {
      color: #FFF;
    }