/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-hover: #0c4398;
      --accent: #FF5E13;
      --accent-hover: #e04e0a;
      --dark-bg: #0B132B;
      --dark-card: #141f3d;
      --light-bg: #F4F7FC;
      --white: #ffffff;
      --text-main: #1C2541;
      --text-muted: #5A6785;
      --border-color: #E2E8F0;
      --border-dark: #27355c;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-sm: 0 4px 12px rgba(15, 82, 186, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 82, 186, 0.08);
      --shadow-lg: 0 20px 35px -10px rgba(11, 19, 43, 0.15);
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      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(--white);
      line-height: 1.65;
      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;
      font-size: 1rem;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部通栏 */
    .top-bar {
      background-color: var(--dark-bg);
      color: #94a3b8;
      font-size: 0.8125rem;
      border-bottom: 1px solid var(--border-dark);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #34d399;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10b981;
    }
    .top-bar-links {
      display: flex;
      gap: 20px;
    }
    /* 主导航 */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo span {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-links a {
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--text-main);
      padding: 8px 0;
      position: relative;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: var(--transition);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 24px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      gap: 8px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: var(--white);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 4px 14px rgba(15, 82, 186, 0.35);
    }
    .btn-accent {
      background-color: var(--accent);
      color: var(--white);
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 4px 14px rgba(255, 94, 19, 0.35);
    }
    .btn-outline {
      background-color: transparent;
      border-color: rgba(255, 255, 255, 0.3);
      color: var(--white);
    }
    .btn-outline:hover {
      background-color: rgba(255, 255, 255, 0.1);
      border-color: var(--white);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
    }
    /* 通用 Section 样式 */
    section {
      padding: 90px 0;
    }
    .section-light {
      background-color: var(--light-bg);
    }
    .section-dark {
      background-color: var(--dark-bg);
      color: var(--white);
    }
    .section-title-wrap {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px auto;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background-color: rgba(15, 82, 186, 0.1);
      color: var(--primary);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 14px;
    }
    .section-badge-dark {
      background-color: rgba(255, 94, 19, 0.2);
      color: #ff854d;
    }
    .section-heading {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 18px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-desc-dark {
      color: #94a3b8;
    }
    /* 板块 01: Hero 沉浸 Banner */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(11, 19, 43, 0.94), rgba(15, 82, 186, 0.88)), url('/assets/images/4f3327c479e46a3a.webp') center/cover no-repeat;
      color: var(--white);
      padding: 110px 0 100px 0;
      overflow: hidden;
    }
    .hero-content {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-text h1 {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }
    .hero-text p {
      font-size: 1.125rem;
      line-height: 1.75;
      color: #cbd5e1;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-tags {
      display: flex;
      gap: 20px;
      font-size: 0.9rem;
      color: #94a3b8;
    }
    .hero-tag-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .hero-tag-item::before {
      content: '✓';
      color: var(--accent);
      font-weight: bold;
    }
    .countdown-bar {
      margin-top: 25px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .countdown-timer {
      display: flex;
      gap: 12px;
      font-weight: 700;
      color: var(--accent);
    }
    .countdown-timer span {
      background: rgba(0, 0, 0, 0.3);
      padding: 4px 8px;
      border-radius: 4px;
      color: #fff;
      font-size: 0.9rem;
    }
    .hero-dashboard-mockup {
      background: rgba(20, 31, 61, 0.85);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-lg);
    }
    .mockup-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-dark);
      padding-bottom: 14px;
      margin-bottom: 18px;
      font-size: 0.9rem;
      font-weight: 600;
    }
    .mockup-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .mockup-item {
      background: rgba(255, 255, 255, 0.05);
      padding: 16px;
      border-radius: var(--radius-sm);
    }
    .mockup-label {
      font-size: 0.8rem;
      color: #94a3b8;
      margin-bottom: 4px;
    }
    .mockup-val {
      font-size: 1.5rem;
      font-weight: 700;
      color: #38bdf8;
    }
    /* 板块 02: 裂变邀请机制 */
    .fission-box {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }
    .fission-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .progress-bar-wrap {
      margin: 24px 0;
    }
    .progress-label-bar {
      display: flex;
      justify-content: space-between;
      margin-bottom: 8px;
      font-size: 0.9rem;
      font-weight: 600;
    }
    .progress-track {
      height: 12px;
      background: var(--light-bg);
      border-radius: 6px;
      overflow: hidden;
    }
    .progress-fill {
      width: 78%;
      height: 100%;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      border-radius: 6px;
    }
    .leaderboard {
      background: var(--light-bg);
      border-radius: var(--radius-md);
      padding: 20px;
    }
    .leaderboard h4 {
      font-size: 1rem;
      margin-bottom: 14px;
      display: flex;
      justify-content: space-between;
    }
    .leader-row {
      display: flex;
      justify-content: space-between;
      padding: 10px 0;
      border-bottom: 1px dashed var(--border-color);
      font-size: 0.875rem;
    }
    .leader-row:last-child {
      border-bottom: none;
    }
    /* 板块 03: 架构与系统定位介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 4fr 6fr;
      gap: 48px;
      align-items: center;
    }
    .about-image {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }
    .trust-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 24px;
    }
    .badge-card {
      background: var(--light-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 10px 16px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
    }
    /* 板块 04: 卖点三连 */
    .selling-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .selling-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .selling-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .selling-icon {
      width: 52px;
      height: 52px;
      background: rgba(15, 82, 186, 0.1);
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: bold;
      margin-bottom: 20px;
    }
    .selling-card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
    }
    .selling-card p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }
    /* 板块 05: 场景演示卡 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .scenario-card {
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .scenario-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }
    .scenario-body {
      padding: 20px;
    }
    .scenario-tag {
      font-size: 0.75rem;
      color: var(--primary);
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 8px;
      display: block;
    }
    .scenario-body h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
    }
    .scenario-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    /* 板块 06: 本地化与多渠道接入能力 */
    .localize-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }
    .localize-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .localize-item {
      display: flex;
      gap: 14px;
    }
    .localize-item-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(15, 82, 186, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-weight: bold;
    }
    /* 板块 07: 核心优势矩阵 (6 卡片) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }
    .matrix-card h3 {
      font-size: 1.15rem;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .matrix-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* 板块 08: 热门产品与部署方案 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .pricing-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .pricing-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
      transform: scale(1.03);
    }
    .featured-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent);
      color: var(--white);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
    }
    .pricing-name {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .pricing-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .pricing-specs {
      list-style: none;
      margin-bottom: 30px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 0.9rem;
    }
    .pricing-specs li {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pricing-specs li::before {
      content: '✓';
      color: #10b981;
      font-weight: bold;
    }
    /* 板块 09: 高可用架构与安全理念 */
    .security-topology {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      margin-top: 40px;
    }
    .topo-item {
      background: var(--dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 26px;
    }
    .topo-item h4 {
      font-size: 1.15rem;
      margin-bottom: 10px;
      color: #38bdf8;
    }
    .topo-item p {
      font-size: 0.925rem;
      color: #94a3b8;
      line-height: 1.6;
    }
    /* 板块 10: 全网关键数据统计条 */
    .stats-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .stat-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 28px 16px;
    }
    .stat-num {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.2;
      margin-bottom: 8px;
    }
    .stat-title {
      font-size: 0.95rem;
      color: #cbd5e1;
    }
    /* 板块 11: 运营成果与客户案例 */
    .case-box {
      background: var(--white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      box-shadow: var(--shadow-md);
    }
    .case-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content {
      padding: 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-quote {
      font-size: 1.15rem;
      font-style: italic;
      line-height: 1.7;
      margin-bottom: 24px;
      color: var(--text-main);
    }
    .case-author {
      font-weight: 700;
      color: var(--primary);
    }
    .case-author-title {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    /* 板块 12: 多维度能力对比矩阵 */
    .table-container {
      overflow-x: auto;
      background: var(--white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }
    .compare-table th {
      background: var(--light-bg);
      font-weight: 700;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .highlight-col {
      background: rgba(15, 82, 186, 0.03);
      font-weight: 700;
      color: var(--primary);
    }
    /* 板块 13: 运维实践与行业资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-card h3 {
      font-size: 1.15rem;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    /* 板块 14: FAQ 常见疑问拆解 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: var(--white);
    }
    .faq-question::after {
      content: '+';
      font-size: 1.3rem;
      color: var(--primary);
      transition: var(--transition);
    }
    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    /* 板块 15: 保障承诺与收口表单 */
    .cta-container {
      background: linear-gradient(135deg, var(--dark-bg), #141f3d);
      border-radius: var(--radius-lg);
      padding: 48px;
      color: var(--white);
      box-shadow: var(--shadow-lg);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-form {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.85rem;
      margin-bottom: 6px;
      color: #cbd5e1;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      color: var(--white);
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--accent);
      background: rgba(255, 255, 255, 0.15);
    }
    /* 页脚 */
    footer {
      background: #080c1d;
      color: #94a3b8;
      padding: 80px 0 24px 0;
      border-top: 1px solid var(--border-dark);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 60px;
    }
    .footer-col h4 {
      color: var(--white);
      font-size: 1.05rem;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      text-align: center;
      padding-top: 24px;
      border-top: 1px solid var(--border-dark);
      font-size: 0.85rem;
      color: #64748b;
    }
    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-content {
        grid-template-columns: 1fr;
      }
      .about-grid, .fission-grid, .localize-grid, .case-box, .cta-grid {
        grid-template-columns: 1fr;
      }
      .selling-grid, .pricing-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .hero-text h1 {
        font-size: 2.15rem;
      }
      .section-heading {
        font-size: 1.75rem;
      }
      .selling-grid, .pricing-grid, .news-grid, .matrix-grid, .scenario-grid, .stats-bar, .security-topology {
        grid-template-columns: 1fr;
      }
      .pricing-card.featured {
        transform: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-container {
        padding: 28px 20px;
      }
    }