/* roulang page: index */
:root {
      --primary: #0F3B38;
      --primary-light: #165b56;
      --accent: #00D084;
      --accent-deep: #00A896;
      --surface: #F7F9FA;
      --surface-subtle: #EEF4F6;
      --dark-surface: #0A1926;
      --text-main: #1A202C;
      --text-muted: #4A5568;
      --text-light: #718096;
      --border: #E2E8F0;
      --white: #FFFFFF;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-soft: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 12px 28px -4px rgba(15, 59, 56, 0.12);
      --container-max: 1240px;
    }

    *, *::before, *::after {
      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", "Segoe UI", Roboto, sans-serif;
      line-height: 1.7;
      color: var(--text-main);
      background-color: var(--white);
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 顶部微型信息条 */
    .topbar {
      background-color: var(--primary);
      color: rgba(255, 255, 255, 0.82);
      font-size: 0.825rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .topbar-items {
      display: flex;
      gap: 1.5rem;
      align-items: center;
    }
    .topbar-tag {
      background: rgba(0, 208, 132, 0.18);
      color: var(--accent);
      padding: 0.15rem 0.6rem;
      border-radius: 999px;
      font-weight: 500;
    }

    /* 主导航 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 3px rgba(0,0,0,0.06);
      transition: all 0.3s;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--primary);
    }
    .logo-badge {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent-deep));
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: 800;
      font-size: 1.1rem;
    }
    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
      align-items: center;
    }
    .nav-links a {
      font-weight: 500;
      color: var(--text-main);
      font-size: 0.95rem;
      position: relative;
      padding: 0.4rem 0;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--accent-deep);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--accent);
      transition: width 0.25s ease;
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .btn-cta {
      background: var(--accent-deep);
      color: var(--white);
      padding: 0.65rem 1.4rem;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid var(--accent-deep);
      cursor: pointer;
      display: inline-block;
      text-align: center;
      box-shadow: 0 4px 14px rgba(0, 168, 150, 0.25);
    }
    .btn-cta:hover {
      background: var(--accent);
      color: var(--primary);
      border-color: var(--accent);
      transform: translateY(-2px);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 板块公用规范 */
    section {
      padding: 5rem 0;
      scroll-margin-top: 80px;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 3.5rem;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--accent-deep);
      background: rgba(0, 168, 150, 0.1);
      padding: 0.3rem 0.85rem;
      border-radius: 999px;
      margin-bottom: 0.85rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .section-title {
      font-size: 2.15rem;
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 1.15rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 板块 1: Hero 旗舰展厅 */
    #hero {
      position: relative;
      background: linear-gradient(180deg, #0A1926 0%, #0F3B38 100%);
      color: var(--white);
      padding: 4.5rem 0 6rem;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: url('/assets/images/3dd44a0c108299b4.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      pointer-events: none;
    }
    .hero-inner {
      position: relative;
      z-index: 2;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-h1 span {
      color: var(--accent);
    }
    .hero-intro {
      font-size: 1.15rem;
      color: rgba(255, 255, 255, 0.88);
      max-width: 860px;
      margin-bottom: 2.5rem;
      line-height: 1.8;
    }
    .hero-actions {
      display: flex;
      gap: 1.25rem;
      margin-bottom: 3.5rem;
      flex-wrap: wrap;
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.12);
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.25);
      padding: 0.65rem 1.6rem;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      display: inline-block;
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.22);
      border-color: rgba(255, 255, 255, 0.4);
    }
    /* 旗舰店系列导航条叠加大图卡片 */
    .hero-series-bar {
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 1.5rem;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }
    .series-item {
      padding: 1rem;
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: all 0.3s;
    }
    .series-item:hover {
      background: rgba(255, 255, 255, 0.12);
      transform: translateY(-3px);
      border-color: var(--accent);
    }
    .series-name {
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 0.35rem;
      color: var(--accent);
    }
    .series-brief {
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.72);
      line-height: 1.5;
    }

    /* 板块 2: 分类入口 */
    #categories {
      background-color: var(--surface);
    }
    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .category-card {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      box-shadow: var(--shadow-soft);
      border: 1px solid var(--border);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .category-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: var(--accent-deep);
    }
    .category-icon {
      width: 48px;
      height: 48px;
      background: var(--surface-subtle);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--accent-deep);
      margin-bottom: 1.25rem;
      font-size: 1.25rem;
    }
    .category-card h3 {
      font-size: 1.2rem;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }
    .category-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      flex-grow: 1;
      margin-bottom: 1.25rem;
      line-height: 1.6;
    }
    .card-link {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--accent-deep);
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
    }
    .card-link:hover {
      color: var(--primary);
    }

    /* 板块 3: 精选推荐套件 */
    #featured {
      background-color: var(--white);
    }
    .featured-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .featured-box {
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      background: var(--white);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .featured-box:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--accent-deep);
    }
    .featured-media {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .featured-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .featured-box:hover .featured-media img {
      transform: scale(1.05);
    }
    .featured-badge {
      position: absolute;
      top: 1rem;
      left: 1rem;
      background: var(--primary);
      color: var(--white);
      font-size: 0.75rem;
      padding: 0.25rem 0.65rem;
      border-radius: 4px;
      font-weight: 600;
    }
    .featured-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .featured-body h3 {
      font-size: 1.25rem;
      margin-bottom: 0.75rem;
    }
    .featured-body p {
      font-size: 0.925rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
      line-height: 1.65;
      flex-grow: 1;
    }
    .featured-specs {
      list-style: none;
      margin-bottom: 1.5rem;
      border-top: 1px dashed var(--border);
      padding-top: 1rem;
    }
    .featured-specs li {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 0.4rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .featured-specs li::before {
      content: '✓';
      color: var(--accent);
      font-weight: bold;
    }

    /* 板块 4: 资讯动态 */
    #insights {
      background-color: var(--surface-subtle);
    }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .insight-card {
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border);
      transition: 0.3s;
    }
    .insight-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .insight-thumb {
      height: 180px;
      overflow: hidden;
    }
    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 1.5rem;
    }
    .insight-date {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 0.5rem;
    }
    .insight-body h3 {
      font-size: 1.1rem;
      line-height: 1.45;
      margin-bottom: 0.75rem;
    }
    .insight-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 5: 排行榜 / 指标阵列 */
    #leaderboard {
      background-color: var(--white);
    }
    .leaderboard-table-wrap {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 2rem;
      border: 1px solid var(--border);
    }
    .rank-row {
      display: grid;
      grid-template-columns: 80px 2fr 1fr 1fr 1.5fr;
      align-items: center;
      padding: 1.25rem 1rem;
      border-bottom: 1px solid var(--border);
      gap: 1rem;
    }
    .rank-row:last-child {
      border-bottom: none;
    }
    .rank-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--white);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      border: 1px solid var(--border);
    }
    .rank-row:nth-child(1) .rank-num {
      background: var(--accent);
      color: var(--primary);
      border-color: var(--accent);
    }
    .rank-name {
      font-weight: 600;
      color: var(--text-main);
    }
    .rank-score {
      font-weight: 700;
      color: var(--accent-deep);
    }
    .rank-tag {
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* 板块 6: 案例与实证 */
    #cases {
      background-color: var(--surface);
    }
    .cases-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
    }
    .case-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
    }
    .case-img {
      height: 240px;
      position: relative;
    }
    .case-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-info {
      padding: 2rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .case-info h3 {
      font-size: 1.35rem;
      margin-bottom: 0.75rem;
    }
    .case-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .case-data-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1rem;
      border-top: 1px solid var(--border);
      padding-top: 1.25rem;
      margin-top: auto;
    }
    .case-stat-num {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--accent-deep);
    }
    .case-stat-label {
      font-size: 0.785rem;
      color: var(--text-light);
    }

    /* 板块 7: 战略理念与治理标准（深色对比） */
    #governance {
      background: var(--dark-surface);
      color: var(--white);
    }
    #governance .section-title {
      color: var(--white);
    }
    #governance .section-desc {
      color: rgba(255, 255, 255, 0.75);
    }
    .gov-flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .gov-step-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      position: relative;
    }
    .gov-step-num {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--accent);
      opacity: 0.65;
      margin-bottom: 1rem;
      line-height: 1;
    }
    .gov-step-card h3 {
      font-size: 1.15rem;
      margin-bottom: 0.75rem;
      color: var(--white);
    }
    .gov-step-card p {
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.65);
      line-height: 1.65;
    }

    /* 板块 8: 运行数据量化 */
    #metrics {
      background: linear-gradient(135deg, var(--primary) 0%, #165B56 100%);
      color: var(--white);
      padding: 4rem 0;
    }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-item-num {
      font-size: 3rem;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 0.25rem;
      line-height: 1;
    }
    .metric-item-label {
      font-size: 1.05rem;
      font-weight: 600;
      margin-bottom: 0.25rem;
    }
    .metric-item-sub {
      font-size: 0.825rem;
      color: rgba(255, 255, 255, 0.7);
    }

    /* 板块 9: 合作伙伴 */
    #partners {
      background-color: var(--white);
    }
    .partner-logo-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 1.25rem;
    }
    .partner-item {
      height: 80px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-light);
      background: var(--surface);
      transition: 0.2s;
    }
    .partner-item:hover {
      border-color: var(--accent-deep);
      color: var(--primary);
      background: var(--white);
    }

    /* 板块 10: 平台保障承诺条 */
    #assurance {
      background-color: var(--surface-subtle);
    }
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .assurance-box {
      background: var(--white);
      padding: 1.75rem 1.25rem;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--accent);
      box-shadow: var(--shadow-soft);
    }
    .assurance-box h3 {
      font-size: 1.1rem;
      margin-bottom: 0.5rem;
      color: var(--text-main);
    }
    .assurance-box p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 11: 适用人群/企业分栏画像卡 */
    #audience {
      background-color: var(--white);
    }
    .audience-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .audience-card {
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 2.25rem 1.75rem;
      background: var(--surface);
    }
    .audience-card h3 {
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 1rem;
    }
    .audience-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }
    .audience-card ul {
      list-style: none;
      padding-left: 0;
    }
    .audience-card ul li {
      font-size: 0.875rem;
      color: var(--text-main);
      padding: 0.35rem 0;
      border-bottom: 1px dashed rgba(0,0,0,0.06);
    }

    /* 板块 12: 试用与预约演示入口收口区 */
    #contact {
      background: linear-gradient(135deg, #0A1926 0%, #0F3B38 100%);
      color: var(--white);
    }
    .contact-card-wrap {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 3.5rem 2.5rem;
      max-width: 960px;
      margin: 0 auto;
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .contact-text h2 {
      font-size: 2.2rem;
      line-height: 1.3;
      margin-bottom: 1.25rem;
      color: var(--white);
    }
    .contact-text p {
      font-size: 0.95rem;
      color: rgba(255, 255, 255, 0.78);
      line-height: 1.75;
      margin-bottom: 1.5rem;
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 0.85rem 1rem;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      color: var(--white);
      font-size: 0.95rem;
      outline: none;
      transition: border 0.3s;
    }
    .form-select option {
      background: #0A1926;
      color: #fff;
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--accent);
      background: rgba(255, 255, 255, 0.12);
    }
    .form-privacy-note {
      font-size: 0.75rem;
      color: rgba(255, 255, 255, 0.5);
      margin-top: 0.75rem;
    }

    /* 页脚 */
    .site-footer {
      background: #06111A;
      color: rgba(255, 255, 255, 0.65);
      padding: 4.5rem 0 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      color: var(--white);
      font-size: 1.05rem;
      margin-bottom: 1.25rem;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-series-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .category-grid, .assurance-grid, .gov-flow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-logo-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .topbar { display: none; }
      .mobile-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        gap: 1rem;
      }
      .nav-links.active {
        display: flex;
      }
      .hero-h1 {
        font-size: 2.15rem;
      }
      .featured-grid, .insights-grid, .cases-split, .audience-grid, .contact-grid {
        grid-template-columns: 1fr;
      }
      .metrics-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .rank-row {
        grid-template-columns: 50px 1fr 1fr;
      }
      .rank-row > div:nth-child(4), .rank-row > div:nth-child(5) {
        display: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }