/* roulang page: index */
:root {
      --bg-primary: #0B1026;
      --bg-secondary: #101735;
      --card-bg: #131A35;
      --card-border: #1E293B;
      --card-hover: #182346;
      --cyan-bright: #00F2FF;
      --cyan-glow: rgba(0, 242, 255, 0.25);
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --max-width: 1240px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.6;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 16, 38, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      height: 72px;
      display: flex;
      align-items: center;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.2px;
    }

    .brand-logo .logo-icon {
      width: 32px;
      height: 32px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, #00F2FF, #0077FF);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 12px var(--cyan-glow);
    }

    .brand-logo .logo-icon svg {
      width: 20px;
      height: 20px;
      fill: #0B1026;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-item {
      font-size: 15px;
      color: var(--text-muted);
      font-weight: 500;
      position: relative;
      padding: 6px 0;
    }

    .nav-item:hover, .nav-item.active {
      color: var(--cyan-bright);
    }

    .nav-item.active::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--cyan-bright);
      border-radius: 1px;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      transition: all var(--transition-fast);
      min-height: 44px;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--cyan-bright);
      color: #0B1026;
      box-shadow: 0 0 16px var(--cyan-glow);
      position: relative;
    }

    .btn-primary:hover {
      filter: brightness(1.12);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.24);
      color: var(--text-main);
    }

    .btn-outline:hover {
      border-color: var(--cyan-bright);
      color: var(--cyan-bright);
      background: rgba(0, 242, 255, 0.05);
    }

    /* 板块通用 */
    .section-wrap {
      padding: 88px 0;
      position: relative;
    }

    .section-alt {
      background-color: var(--bg-secondary);
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .section-head {
      margin-bottom: 48px;
    }

    .section-head.center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      background: rgba(0, 242, 255, 0.1);
      border: 1px solid rgba(0, 242, 255, 0.25);
      border-radius: 20px;
      font-size: 13px;
      color: var(--cyan-bright);
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 34px;
      line-height: 1.3;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 卡片体系 */
    .card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
      overflow: hidden;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
      border-color: rgba(0, 242, 255, 0.3);
    }

    /* 板块 1: Hero */
    .hero-section {
      min-height: 680px;
      display: flex;
      align-items: center;
      position: relative;
      background-image: linear-gradient(180deg, rgba(11, 16, 38, 0.85) 0%, rgba(11, 16, 38, 0.96) 100%), url('/assets/images/backpic/back-1.jpg');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 96px 0 80px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
    }

    .hero-h1 {
      font-size: 48px;
      font-weight: 800;
      line-height: 1.22;
      color: var(--text-main);
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }

    .hero-h1 span {
      background: linear-gradient(90deg, #FFFFFF, var(--cyan-bright));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 36px;
      max-width: 620px;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
    }

    .pulse-btn {
      animation: pulseGlow 2.5s infinite;
    }

    @keyframes pulseGlow {
      0% { box-shadow: 0 0 0 0 rgba(0, 242, 255, 0.6); }
      70% { box-shadow: 0 0 0 14px rgba(0, 242, 255, 0); }
      100% { box-shadow: 0 0 0 0 rgba(0, 242, 255, 0); }
    }

    .hero-visual-card {
      background: rgba(19, 26, 53, 0.85);
      border: 1px solid rgba(0, 242, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 24px;
      backdrop-filter: blur(10px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }

    .visual-top-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 14px;
      margin-bottom: 20px;
    }

    .visual-dots {
      display: flex;
      gap: 6px;
    }

    .visual-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #1E293B;
    }

    .visual-dots span:nth-child(1) { background: #FF5F56; }
    .visual-dots span:nth-child(2) { background: #FFBD2E; }
    .visual-dots span:nth-child(3) { background: #27C93F; }

    .visual-stream {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .stream-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: rgba(11, 16, 38, 0.7);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 13px;
    }

    .stream-label {
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .stream-val {
      color: var(--cyan-bright);
      font-weight: 600;
      font-family: monospace;
      font-size: 14px;
    }

    /* 板块 2: 信任合作伙伴条 */
    .partner-bar-section {
      background: #080D20;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 30px 0;
    }

    .partner-flex {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      flex-wrap: wrap;
    }

    .partner-title {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--text-dim);
      font-weight: 600;
    }

    .partner-list {
      display: flex;
      align-items: center;
      gap: 42px;
      flex-wrap: wrap;
    }

    .partner-brand {
      color: var(--text-dim);
      font-size: 17px;
      font-weight: 700;
      letter-spacing: 0.5px;
      transition: color var(--transition-fast);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .partner-brand:hover {
      color: var(--text-main);
    }

    /* 板块 3: 核心价值概览 */
    .overview-grid {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 48px;
      align-items: center;
    }

    .overview-img-wrap {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--card-border);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
    }

    .overview-img-wrap img {
      width: 100%;
      height: 380px;
    }

    .value-stack {
      display: flex;
      flex-direction: column;
      gap: 22px;
    }

    .value-item {
      padding: 18px 22px;
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--cyan-bright);
    }

    .value-item h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .value-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 4: 核心功能矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .matrix-card {
      padding: 28px;
      display: flex;
      flex-direction: column;
    }

    .matrix-icon {
      width: 44px;
      height: 44px;
      border-radius: 8px;
      background: rgba(0, 242, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .matrix-icon svg {
      width: 24px;
      height: 24px;
      stroke: var(--cyan-bright);
      fill: none;
    }

    .matrix-card h3 {
      font-size: 19px;
      font-weight: 600;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .matrix-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    /* 板块 5: 技术架构可视化 */
    .arch-wrap {
      background: #090E22;
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 44px;
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 40px;
      align-items: center;
    }

    .arch-layer-tree {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .arch-layer {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .arch-layer-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .arch-layer-title span {
      font-size: 11px;
      background: rgba(255, 255, 255, 0.1);
      padding: 2px 6px;
      border-radius: 4px;
      color: var(--cyan-bright);
      font-family: monospace;
    }

    .arch-layer-tech {
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 板块 6: 数字化应用场景 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .scene-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .scene-img {
      height: 190px;
      width: 100%;
    }

    .scene-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .scene-body h3 {
      font-size: 19px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .scene-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .scene-tags {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }

    .scene-tag {
      font-size: 12px;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-dim);
    }

    /* 板块 7: 运营工作流说明 */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(0, 242, 255, 0.1);
      color: var(--cyan-bright);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
      margin-bottom: 16px;
      border: 1px solid rgba(0, 242, 255, 0.3);
    }

    .step-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .step-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 8: 智能化数据处理 */
    .feature-focus-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .perf-metrics-group {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .perf-metric-box {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      padding: 20px;
      border-radius: var(--radius-sm);
    }

    .perf-metric-box .metric-num {
      font-size: 32px;
      font-weight: 700;
      color: var(--cyan-bright);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .perf-metric-box .metric-tit {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .perf-metric-box .metric-sub {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 板块 9: 行业案例墙 */
    .case-wall-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .case-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .case-thumb {
      height: 190px;
      position: relative;
    }

    .case-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .case-client-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
    }

    .case-client-name {
      font-size: 13px;
      font-weight: 600;
      color: var(--cyan-bright);
    }

    .case-content h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .case-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .case-data-summary {
      background: rgba(11, 16, 38, 0.6);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      border: 1px solid rgba(255, 255, 255, 0.04);
    }

    /* 板块 10: 实时性能/数据统计条 */
    .stats-bar-section {
      background: linear-gradient(180deg, #0B1026 0%, #0F1738 100%);
      border-top: 1px solid rgba(0, 242, 255, 0.2);
      border-bottom: 1px solid rgba(0, 242, 255, 0.2);
      padding: 56px 0;
    }

    .stats-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .stat-item {
      padding: 10px;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
    }

    .stat-item:last-child {
      border-right: none;
    }

    .stat-figure {
      font-size: 44px;
      font-weight: 800;
      color: var(--cyan-bright);
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: monospace;
    }

    .stat-caption {
      font-size: 15px;
      color: var(--text-main);
      font-weight: 600;
      margin-bottom: 4px;
    }

    .stat-desc {
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 板块 11: 用户评价专区 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .review-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(0, 242, 255, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--cyan-bright);
      border: 1px solid rgba(0, 242, 255, 0.3);
    }

    .author-info h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 板块 12: 资讯与深度观察 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .insight-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .insight-thumb {
      height: 180px;
    }

    .insight-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .insight-date {
      font-size: 12px;
      color: var(--cyan-bright);
      margin-bottom: 8px;
    }

    .insight-body h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 10px;
      line-height: 1.4;
      color: var(--text-main);
    }

    .insight-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 板块 13: FAQ 手风琴 */
    .faq-layout {
      display: grid;
      grid-template-columns: 0.8fr 1.2fr;
      gap: 48px;
      align-items: flex-start;
    }

    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-sm);
      overflow: hidden;
    }

    .faq-trigger {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-trigger svg {
      width: 18px;
      height: 18px;
      stroke: var(--cyan-bright);
      transition: transform var(--transition-fast);
      flex-shrink: 0;
    }

    .faq-content {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 14: 底部转化 CTA */
    .cta-banner-wrap {
      background: linear-gradient(135deg, #10193E 0%, #070B1A 100%);
      border: 1px solid rgba(0, 242, 255, 0.3);
      border-radius: var(--radius-lg);
      padding: 64px 32px;
      text-align: center;
      box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
    }

    .cta-banner-wrap h2 {
      font-size: 36px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }

    .cta-banner-wrap p {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 32px;
      max-width: 580px;
      margin-left: auto;
      margin-right: auto;
    }

    /* 页脚系统 */
    .site-footer {
      background: #060917;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 64px 0 32px;
      color: var(--text-muted);
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 0.8fr;
      gap: 48px;
      margin-bottom: 48px;
    }

    .footer-col h4 {
      color: var(--text-main);
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 18px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col a:hover {
      color: var(--cyan-bright);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-grid, .overview-grid, .arch-wrap, .feature-focus-grid, .faq-layout {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .matrix-grid, .scene-grid, .case-wall-grid, .review-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-bar-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stat-item {
        border-right: none;
      }
    }

    @media (max-width: 768px) {
      .section-wrap {
        padding: 56px 0;
      }
      .hero-h1 {
        font-size: 34px;
      }
      .section-title {
        font-size: 26px;
      }
      .matrix-grid, .scene-grid, .case-wall-grid, .review-grid, .insights-grid, .workflow-steps, .stats-bar-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .main-nav {
        display: none;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }