/* roulang page: index */
:root {
      --primary: #124E78;
      --primary-dark: #0A2E46;
      --primary-light: #EBF3F8;
      --accent: #2E933C;
      --accent-hover: #257831;
      --surface-light: #F7F9FB;
      --surface-dark: #0A192F;
      --surface-card: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-full: 9999px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-family);
      color: var(--text-main);
      background-color: var(--surface-light);
      line-height: 1.7;
      letter-spacing: 0.015em;
      overflow-x: hidden;
    }

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

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

    button, input {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部元信息栏与主导航 */
    .top-meta-bar {
      background-color: var(--primary-dark);
      color: #CBD5E1;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .top-meta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10B981;
    }
    .top-links {
      display: flex;
      gap: 18px;
    }

    .site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      z-index: 100;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
    }
    .site-brand svg {
      width: 32px;
      height: 32px;
      fill: var(--primary);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-item a {
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 4px;
      position: relative;
    }
    .nav-item a:hover {
      color: var(--primary);
    }
    .nav-item a.active {
      color: var(--primary);
      font-weight: 700;
    }
    .nav-item a.active::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: var(--radius-full);
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .btn-primary {
      background-color: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(46, 147, 60, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(46, 147, 60, 0.35);
    }
    .btn-outline {
      border-color: var(--border-color);
      color: var(--text-main);
      background-color: #FFFFFF;
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .btn-primary-ghost {
      background-color: rgba(18, 78, 120, 0.08);
      color: var(--primary);
    }
    .btn-primary-ghost:hover {
      background-color: rgba(18, 78, 120, 0.15);
    }

    /* 板块通用规范 */
    .section-spacing {
      padding: 96px 0;
    }
    .section-spacing-sm {
      padding: 64px 0;
    }
    .section-header {
      margin-bottom: 56px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background-color: var(--primary-light);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      margin-bottom: 14px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 18px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 1：Hero */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #F0F4F8 0%, #E8F0F7 100%);
      padding: 72px 0 96px;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      opacity: 0.05;
      background-image: url('/assets/images/e10a7aa5453d01ea.png');
      background-size: cover;
      background-position: center;
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }
    .hero-h1 {
      font-size: 3.2rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--primary-dark);
      margin-bottom: 22px;
      letter-spacing: -0.02em;
    }
    .hero-lead {
      font-size: 1.15rem;
      color: #334155;
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .hero-search-box {
      max-width: 680px;
      margin: 0 auto 24px;
      position: relative;
      display: flex;
      box-shadow: 0 12px 30px rgba(18, 78, 120, 0.12);
      border-radius: var(--radius-full);
      background: #FFFFFF;
      padding: 6px 8px 6px 20px;
      border: 1px solid rgba(18, 78, 120, 0.15);
    }
    .hero-search-box input {
      flex: 1;
      border: none;
      outline: none;
      font-size: 1.05rem;
      color: var(--text-main);
      background: transparent;
    }
    .hero-hot-chips {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      align-items: center;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .chip {
      background: #FFFFFF;
      padding: 5px 14px;
      border-radius: var(--radius-full);
      border: 1px solid var(--border-color);
      color: var(--primary);
      font-weight: 500;
      transition: all 0.2s;
    }
    .chip:hover {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
    }

    /* 板块 2：品类入口 */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .category-card {
      background: var(--surface-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: var(--shadow-sm);
    }
    .category-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .category-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
      font-size: 1.5rem;
      font-weight: bold;
    }
    .category-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .category-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 3：技术定位蓝图图文 */
    .overview-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .overview-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .overview-badges {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(10, 25, 47, 0.85);
      backdrop-filter: blur(8px);
      padding: 14px 20px;
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      display: flex;
      justify-content: space-around;
      font-size: 0.85rem;
    }
    .badge-item strong {
      display: block;
      color: #38BDF8;
      font-size: 1.1rem;
    }

    /* 板块 4：六宫格核心架构 */
    .strengths-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .strength-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .strength-card::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      opacity: 0;
      transition: opacity 0.3s;
    }
    .strength-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .strength-card:hover::after {
      opacity: 1;
    }
    .strength-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary-light);
      margin-bottom: 12px;
    }
    .strength-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .strength-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 5：特色功能重型模块 */
    .modules-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .module-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s;
    }
    .module-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .module-card-img {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .module-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .module-card:hover .module-card-img img {
      transform: scale(1.05);
    }
    .module-status {
      position: absolute;
      top: 14px;
      right: 14px;
      background: rgba(18, 78, 120, 0.85);
      backdrop-filter: blur(4px);
      color: #FFFFFF;
      padding: 4px 10px;
      font-size: 0.75rem;
      font-weight: 600;
      border-radius: var(--radius-full);
    }
    .module-content {
      padding: 28px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .module-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .module-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      flex: 1;
    }
    .module-feature-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .module-feature-list li {
      position: relative;
      padding-left: 20px;
      font-size: 0.9rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .module-feature-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--accent);
      font-weight: bold;
    }

    /* 板块 6：深色沉浸式生态 */
    .ecosystem-section {
      background: var(--surface-dark);
      color: #F8FAFC;
      position: relative;
    }
    .ecosystem-section .section-title {
      color: #FFFFFF;
    }
    .ecosystem-section .section-desc {
      color: #94A3B8;
    }
    .ecosystem-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 48px;
    }
    .ecosystem-box {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 32px;
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
    }
    .ecosystem-box-title {
      font-size: 1.2rem;
      color: #38BDF8;
      margin-bottom: 14px;
      font-weight: 600;
    }
    .ecosystem-box-desc {
      font-size: 0.95rem;
      color: #CBD5E1;
      line-height: 1.65;
    }

    /* 板块 7：多场景实操与落地故事 */
    .scenario-tabs-wrap {
      display: grid;
      grid-template-columns: 320px 1fr;
      gap: 36px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }
    .scenario-nav {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .scenario-btn {
      text-align: left;
      padding: 18px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      background: var(--surface-light);
      cursor: pointer;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      transition: all 0.25s;
    }
    .scenario-btn.active, .scenario-btn:hover {
      background: var(--primary-light);
      border-color: var(--primary);
      color: var(--primary);
    }
    .scenario-content {
      padding: 10px 20px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .scenario-content h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--primary-dark);
    }
    .scenario-content p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .scenario-kpi {
      display: flex;
      gap: 32px;
      padding-top: 20px;
      border-top: 1px dashed var(--border-color);
    }
    .kpi-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--accent);
    }
    .kpi-label {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 板块 8：性能指标计量带 */
    .metrics-bar {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #FFFFFF;
      padding: 60px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-value {
      font-size: 2.8rem;
      font-weight: 800;
      color: #A7F3D0;
      font-variant-numeric: tabular-nums;
      margin-bottom: 8px;
    }
    .metric-title {
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: #FFFFFF;
    }
    .metric-sub {
      font-size: 0.85rem;
      color: #CBD5E1;
    }

    /* 板块 9：全网同类方案多维对比表 */
    .comparison-table-wrapper {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comparison-table th, .comparison-table td {
      padding: 20px 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .comparison-table th {
      background: #F8FAFC;
      font-weight: 700;
      color: var(--text-main);
    }
    .comparison-table th.highlight-col, .comparison-table td.highlight-col {
      background: rgba(18, 78, 120, 0.04);
      color: var(--primary-dark);
      font-weight: 600;
      border-left: 2px solid var(--primary);
      border-right: 2px solid var(--primary);
    }

    /* 板块 10：社会认同与社群口碑评价 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }
    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 24px;
      flex: 1;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 18px;
    }
    .user-avatar-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--primary);
    }
    .user-meta h4 {
      font-size: 0.95rem;
      font-weight: 700;
    }
    .user-meta p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块 11：资讯与学术快讯摘要 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      justify-content: space-between;
    }
    .news-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .news-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .news-tag {
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      align-self: flex-start;
    }

    /* 板块 12：终极收口行动与保障条 */
    .conversion-section {
      background: linear-gradient(135deg, #0A192F 0%, #124E78 100%);
      color: #FFFFFF;
      padding: 80px 0;
      text-align: center;
      position: relative;
    }
    .conversion-inner {
      max-width: 860px;
      margin: 0 auto;
    }
    .conversion-inner h2 {
      font-size: 2.4rem;
      font-weight: 800;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .conversion-inner p {
      font-size: 1.1rem;
      color: #CBD5E1;
      margin-bottom: 36px;
      line-height: 1.8;
    }
    .conversion-form {
      display: flex;
      justify-content: center;
      gap: 12px;
      max-width: 560px;
      margin: 0 auto 40px;
    }
    .conversion-form input {
      flex: 1;
      padding: 14px 20px;
      border-radius: var(--radius-full);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.1);
      color: #FFFFFF;
      font-size: 0.95rem;
      outline: none;
    }
    .conversion-form input::placeholder {
      color: #94A3B8;
    }
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 48px;
      padding-top: 40px;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
    }
    .assurance-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: #E2E8F0;
    }
    .assurance-icon {
      font-size: 1.5rem;
      color: #38BDF8;
    }

    /* 底部固定转化条 (移动端优先) */
    .mobile-sticky-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: #FFFFFF;
      padding: 10px 16px;
      box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
      z-index: 999;
      border-top: 1px solid var(--border-color);
    }
    .mobile-sticky-inner {
      display: flex;
      gap: 10px;
      align-items: center;
    }
    .mobile-sticky-inner .btn {
      flex: 1;
      padding: 10px 16px;
      font-size: 0.9rem;
    }

    /* 页脚 */
    .site-footer {
      background: #061120;
      color: #94A3B8;
      padding: 64px 0 32px;
      font-size: 0.9rem;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand {
      color: #FFFFFF;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-desc {
      line-height: 1.7;
      margin-bottom: 20px;
      color: #64748B;
    }
    .footer-title {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .category-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .strengths-grid, .modules-grid, .ecosystem-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-meta-bar {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .hero-h1 {
        font-size: 2.2rem;
      }
      .overview-wrapper {
        grid-template-columns: 1fr;
      }
      .scenario-tabs-wrap {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .strengths-grid, .modules-grid, .ecosystem-grid, .testimonials-grid, .category-grid, .news-grid, .assurance-grid {
        grid-template-columns: 1fr;
      }
      .mobile-sticky-bar {
        display: block;
      }
      body {
        padding-bottom: 60px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }