/* roulang page: index */
:root {
      --primary: #0F172A;
      --primary-light: #1E293B;
      --accent: #FF4655;
      --accent-hover: #E03544;
      --cyan: #00F0FF;
      --cyan-dim: rgba(0, 240, 255, 0.12);
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B0F19;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --text-inverse: #F8FAFC;
      --border-light: #E2E8F0;
      --border-dark: #1E293B;
      --border-accent: rgba(255, 70, 85, 0.35);
      --shadow-sm: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-glow: 0 0 25px rgba(0, 240, 255, 0.18);
      --radius-sm: 4px;
      --radius-md: 6px;
      --transition: all 0.22s ease-in-out;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      background-color: var(--bg-light);
      color: var(--text-main);
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部辅助条与导航 */
    .top-bar {
      background-color: var(--bg-dark);
      color: var(--text-light);
      font-size: 12px;
      border-bottom: 1px solid var(--border-dark);
      padding: 6px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--cyan);
    }
    .status-dot {
      width: 6px;
      height: 6px;
      background-color: var(--cyan);
      border-radius: 50%;
      box-shadow: 0 0 6px var(--cyan);
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-dark);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .logo-symbol {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--accent), #B3192B);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 18px;
      letter-spacing: -1px;
    }
    .logo-text {
      font-size: 18px;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      color: var(--text-light);
      font-size: 14px;
      font-weight: 500;
      position: relative;
      padding: 6px 0;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: #FFFFFF;
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: var(--transition);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(255, 70, 85, 0.35);
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
    }
    .btn-outline {
      background-color: transparent;
      color: #FFFFFF;
      border-color: rgba(255, 255, 255, 0.25);
    }
    .btn-outline:hover {
      border-color: var(--cyan);
      color: var(--cyan);
      transform: translateY(-2px);
    }
    .btn-cyan {
      background: var(--cyan);
      color: var(--bg-dark);
      font-weight: 700;
    }
    .btn-cyan:hover {
      background: #38f4ff;
      box-shadow: var(--shadow-glow);
      transform: translateY(-2px);
    }

    /* 移动端菜单控制 */
    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      color: #FFFFFF;
      font-size: 24px;
      cursor: pointer;
    }

    /* 板块排版公用 */
    .section-wrap {
      padding: 88px 0;
      position: relative;
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: var(--text-inverse);
    }
    .section-white {
      background-color: var(--bg-white);
    }
    .section-light {
      background-color: var(--bg-light);
    }
    .section-header {
      margin-bottom: 52px;
      max-width: 820px;
    }
    .tag-label {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .tag-label-cyan {
      color: var(--cyan);
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-muted);
    }
    .section-dark .section-desc {
      color: var(--text-light);
    }

    /* 1. Hero 轮播看板区 */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(255, 70, 85, 0.12) 0%, transparent 60%),
                  radial-gradient(circle at 10% 80%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
                  #0B0F19;
      color: #fff;
      padding: 80px 0 100px;
      border-bottom: 1px solid var(--border-dark);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 44px;
      line-height: 1.15;
      font-weight: 900;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #FFFFFF, var(--cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-p {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-light);
      margin-bottom: 32px;
    }
    .hero-btns {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-kpi-bar {
      display: flex;
      gap: 28px;
      border-top: 1px solid var(--border-dark);
      padding-top: 24px;
    }
    .kpi-item h4 {
      font-size: 26px;
      font-weight: 800;
      color: var(--cyan);
      font-family: monospace;
    }
    .kpi-item p {
      font-size: 12px;
      color: var(--text-light);
    }
    /* Hero 右侧数据看板 */
    .faux-board {
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
      padding: 24px;
      position: relative;
    }
    .board-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-dark);
      padding-bottom: 14px;
      margin-bottom: 18px;
    }
    .board-title {
      font-size: 14px;
      font-weight: 700;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .board-title::before {
      content: "";
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
    }
    .board-meta {
      font-size: 12px;
      color: var(--cyan);
      font-family: monospace;
    }
    .queue-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .queue-row {
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 14px;
      background: rgba(255, 255, 255, 0.03);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--cyan);
      font-size: 13px;
    }
    .queue-row.high-priority {
      border-left-color: var(--accent);
    }
    .queue-type {
      font-weight: 600;
      color: #FFFFFF;
    }
    .queue-latency {
      font-family: monospace;
      font-size: 12px;
      color: var(--cyan);
    }

    /* 2. 行业挑战与痛点对比 */
    .challenges-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .challenge-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      position: relative;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .challenge-card:hover {
      border-color: var(--accent);
      transform: translateY(-3px);
    }
    .challenge-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 12px;
      display: block;
    }
    .challenge-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .challenge-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 3. 架构与硬核参数 */
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .arch-specs {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }
    .spec-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      padding: 16px;
      background: var(--bg-light);
      border-left: 3px solid var(--primary);
      border-radius: var(--radius-sm);
    }
    .spec-item strong {
      display: block;
      font-size: 15px;
      color: var(--text-main);
    }
    .spec-item span {
      font-size: 13px;
      color: var(--text-muted);
    }
    .arch-visual {
      background: #0B0F19;
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      padding: 20px;
    }
    .arch-visual img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      border-radius: var(--radius-sm);
      opacity: 0.9;
    }

    /* 4. 6卡片核心优势网格 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 28px;
      position: relative;
      transition: var(--transition);
    }
    .adv-card:hover {
      border-color: var(--cyan);
      box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
      transform: translateY(-2px);
    }
    .adv-index {
      position: absolute;
      top: 20px;
      right: 20px;
      font-size: 14px;
      font-weight: 800;
      color: var(--text-light);
      font-family: monospace;
    }
    .adv-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin: 12px 0 10px;
    }
    .adv-card p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 5. 核心产品矩阵 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-col {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      display: flex;
      flex-direction: column;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .product-col:hover {
      border-color: var(--accent);
      transform: translateY(-3px);
    }
    .prod-head {
      padding: 28px 24px 20px;
      border-bottom: 1px solid var(--border-light);
    }
    .prod-head h3 {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .prod-head p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .prod-body {
      padding: 24px;
      flex-grow: 1;
    }
    .feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 24px;
    }
    .feature-list li {
      font-size: 13.5px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .feature-list li::before {
      content: "✓";
      color: var(--accent);
      font-weight: bold;
    }
    .prod-foot {
      padding: 16px 24px 24px;
    }

    /* 6. 深色安全与合规理念 */
    .philosophy-banner {
      background: #060911;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .phil-quote {
      font-size: 28px;
      font-weight: 800;
      line-height: 1.4;
      margin-bottom: 20px;
      color: #FFFFFF;
      max-width: 900px;
    }
    .phil-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 40px;
      border-top: 1px solid var(--border-dark);
      padding-top: 36px;
    }
    .phil-box h4 {
      font-size: 16px;
      color: var(--cyan);
      margin-bottom: 10px;
    }
    .phil-box p {
      font-size: 13.5px;
      color: var(--text-light);
      line-height: 1.6;
    }

    /* 7. 竞技处理流程 4 步流转 */
    .steps-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 24px;
      position: relative;
    }
    .step-num {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      font-size: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
    }
    .step-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 核心指标与量化数据 */
    .metrics-strip {
      background: var(--primary);
      color: #FFFFFF;
      padding: 56px 0;
      border-top: 1px solid rgba(255,255,255,0.1);
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .metrics-flex {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-val {
      font-size: 42px;
      font-weight: 900;
      color: var(--cyan);
      font-family: monospace;
      line-height: 1;
      margin-bottom: 8px;
    }
    .metric-lbl {
      font-size: 14px;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 9. 实战案例展示 */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .case-panel {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-thumb {
      height: 220px;
      overflow: hidden;
    }
    .case-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .case-panel:hover .case-thumb img {
      transform: scale(1.03);
    }
    .case-content {
      padding: 24px;
    }
    .case-tag {
      font-size: 11px;
      color: var(--accent);
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 8px;
      display: block;
    }
    .case-content h3 {
      font-size: 18px;
      margin-bottom: 10px;
    }
    .case-content p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .case-kpi {
      display: flex;
      gap: 20px;
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
    }
    .case-kpi span {
      font-size: 12px;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 10. 用户评价反馈墙 */
    .feedback-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feedback-item {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }
    .feedback-stars {
      color: #FFB800;
      font-size: 14px;
      margin-bottom: 12px;
    }
    .feedback-quote {
      font-size: 13.5px;
      line-height: 1.7;
      color: var(--text-main);
      margin-bottom: 20px;
    }
    .feedback-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .author-avatar {
      width: 40px;
      height: 40px;
      background: var(--bg-light);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--primary);
      border: 1px solid var(--border-light);
    }
    .author-info h5 {
      font-size: 14px;
      font-weight: 700;
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 11. 资讯动态摘要 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: var(--transition);
    }
    .news-card:hover {
      border-color: var(--cyan);
    }
    .news-img {
      height: 160px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 20px;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-body h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .news-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 12. FAQ 手风琴列表 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .accordion-item {
      border: 1px solid var(--border-light);
      background: var(--bg-white);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .accordion-trigger {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      background: transparent;
      border: none;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: var(--transition);
    }
    .accordion-trigger:hover {
      color: var(--accent);
    }
    .accordion-icon {
      font-size: 20px;
      font-weight: 300;
      transition: transform 0.2s ease;
    }
    .accordion-content {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease-out, padding 0.25s ease-out;
      background: var(--bg-light);
    }
    .accordion-content p {
      padding-bottom: 20px;
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-muted);
    }
    .accordion-item.active .accordion-content {
      max-height: 200px;
      padding-top: 14px;
    }
    .accordion-item.active .accordion-icon {
      transform: rotate(45deg);
    }

    /* 13. 部署咨询收口 CTA 区 */
    .cta-box {
      background: linear-gradient(135deg, #0F172A 0%, #1A2438 100%);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 56px 48px;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    }
    .cta-text h3 {
      font-size: 32px;
      color: #fff;
      font-weight: 800;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .cta-text p {
      font-size: 14.5px;
      color: var(--text-light);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .form-group {
      display: flex;
      gap: 12px;
    }
    .form-input {
      flex: 1;
      padding: 12px 16px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 14px;
      outline: none;
    }
    .form-input:focus {
      border-color: var(--cyan);
    }

    /* 全局页脚 */
    .site-footer {
      background: #070A10;
      color: var(--text-light);
      border-top: 1px solid var(--border-dark);
      padding: 64px 0 32px;
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 15px;
      margin-bottom: 18px;
      font-weight: 700;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col ul a:hover {
      color: var(--cyan);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-dark);
      padding-top: 28px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      color: #475569;
      text-align: center;
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
      .challenges-grid { grid-template-columns: repeat(2, 1fr); }
      .advantages-grid { grid-template-columns: repeat(2, 1fr); }
      .products-grid { grid-template-columns: 1fr; }
      .steps-row { grid-template-columns: repeat(2, 1fr); }
      .cases-grid { grid-template-columns: 1fr; }
      .feedback-grid { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .cta-box { grid-template-columns: 1fr; padding: 36px 24px; }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-links { display: none; }
      .mobile-toggle { display: block; }
      .hero-h1 { font-size: 30px; }
      .hero-btns { flex-direction: column; }
      .hero-kpi-bar { flex-wrap: wrap; gap: 16px; }
      .challenges-grid { grid-template-columns: 1fr; }
      .arch-grid { grid-template-columns: 1fr; }
      .advantages-grid { grid-template-columns: 1fr; }
      .steps-row { grid-template-columns: 1fr; }
      .metrics-flex { grid-template-columns: repeat(2, 1fr); gap: 20px; }
      .news-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .section-wrap { padding: 56px 0; }
      .form-group { flex-direction: column; }
    }