/* roulang page: index */
:root {
      --bg-dark: #060a14;
      --bg-darker: #04070d;
      --bg-gradient: radial-gradient(circle at 50% 15%, #0b1c3d 0%, #060a14 70%);
      --primary: #00d2ff;
      --primary-hover: #38dcff;
      --accent-green: #00f5a0;
      --accent-purple: #7928ca;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --glass-bg: rgba(15, 23, 42, 0.65);
      --glass-border: rgba(255, 255, 255, 0.12);
      --glass-glow-border: rgba(0, 210, 255, 0.45);
      --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
      --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }

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

    body {
      background: var(--bg-dark);
      background-image: var(--bg-gradient);
      background-attachment: fixed;
      color: var(--text-main);
      font-family: var(--font-stack);
      line-height: 1.7;
      overflow-x: hidden;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: all 0.3s ease;
    }

    a:hover, a:focus {
      color: var(--accent-green);
    }

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

    /* 顶部双行频道导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(6, 10, 20, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--glass-border);
    }

    .header-brand-row {
      padding: 12px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .brand-logo {
      font-size: 22px;
      font-weight: 700;
      color: #ffffff;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      letter-spacing: 0.5px;
    }

    .brand-logo i {
      color: var(--primary);
      font-size: 24px;
    }

    .brand-subline {
      font-size: 13px;
      color: var(--text-dim);
      margin-left: 12px;
      padding-left: 12px;
      border-left: 1px solid rgba(255, 255, 255, 0.15);
    }

    .brand-meta {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 20px;
      font-size: 13px;
      color: var(--text-muted);
    }

    .header-channel-row {
      overflow-x: auto;
      white-space: nowrap;
      scrollbar-width: none;
    }

    .header-channel-row::-webkit-scrollbar {
      display: none;
    }

    .channel-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 8px 0;
    }

    .channel-item {
      display: inline-block;
      padding: 8px 18px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 6px;
      transition: all 0.25s ease;
    }

    .channel-item:hover, .channel-item.active {
      color: #ffffff;
      background: rgba(0, 210, 255, 0.15);
      border: 1px solid rgba(0, 210, 255, 0.35);
    }

    /* 按钮通用 */
    .glow-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 600;
      color: #ffffff !important;
      border-radius: 6px;
      background: linear-gradient(135deg, #00d2ff 0%, #0066ff 100%);
      box-shadow: 0 0 20px rgba(0, 210, 255, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.2);
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .glow-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(0, 210, 255, 0.7);
      background: linear-gradient(135deg, #38dcff 0%, #1e78ff 100%);
    }

    .glow-btn-sm {
      padding: 8px 18px;
      font-size: 13px;
    }

    .secondary-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 600;
      color: #ffffff !important;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid var(--glass-border);
      backdrop-filter: blur(10px);
      transition: all 0.3s ease;
    }

    .secondary-btn:hover {
      background: rgba(255, 255, 255, 0.16);
      border-color: rgba(255, 255, 255, 0.3);
    }

    /* 板块容器与排版 */
    section {
      padding: 84px 0;
      position: relative;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

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

    .section-head.text-left {
      text-align: left;
    }

    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--primary);
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.25);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
      line-height: 1.8;
    }

    .section-head.text-left .section-desc {
      margin: 0;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--glass-shadow);
      border-radius: 12px;
      padding: 32px;
      transition: all 0.35s ease;
      height: 100%;
    }

    .glass-card:hover {
      border-color: var(--glass-glow-border);
      transform: translateY(-4px);
      box-shadow: 0 12px 36px 0 rgba(0, 210, 255, 0.15);
    }

    /* 1. 首屏全宽矮横幅 (Hero) */
    #hero {
      padding: 60px 0 70px 0;
      background: linear-gradient(180deg, rgba(11, 28, 61, 0.5) 0%, rgba(6, 10, 20, 0.95) 100%), url('/assets/images/f78f500d8da14184.jpg') center/cover no-repeat;
      position: relative;
    }

    .hero-h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      color: #ffffff;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-h1 span {
      background: linear-gradient(90deg, #00d2ff, #00f5a0);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-summary {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.85;
      margin-bottom: 30px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-badges-row {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 13px;
      color: var(--text-dim);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 20px;
    }

    .hero-badges-row span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .hero-badges-row i {
      color: var(--accent-green);
    }

    .hero-preview-board {
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
      background: #090f1d;
    }

    .hero-preview-board img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* 2. 客户案例 (Cases) */
    .case-card {
      position: relative;
      border-radius: 12px;
      overflow: hidden;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .case-card-img {
      position: relative;
      height: 200px;
      overflow: hidden;
    }

    .case-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-card-img img {
      transform: scale(1.05);
    }

    .case-tag-float {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(6, 10, 20, 0.85);
      color: var(--primary);
      font-size: 11px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid rgba(0, 210, 255, 0.3);
    }

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

    .case-card-title {
      font-size: 20px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .case-card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .case-metric-highlight {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 14px;
      font-size: 13px;
      color: var(--text-dim);
    }

    .case-metric-highlight strong {
      color: var(--accent-green);
      font-size: 16px;
    }

    /* 3. 结果数据条 (Metrics) */
    .metric-item {
      text-align: center;
      padding: 24px 16px;
      background: rgba(15, 23, 42, 0.4);
      border: 1px solid var(--glass-border);
      border-radius: 10px;
    }

    .metric-number {
      font-size: 44px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }

    .metric-label {
      font-size: 15px;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 4px;
    }

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

    /* 4. 前后对比 (Comparison) */
    .diff-table-container {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      overflow: hidden;
    }

    .diff-row {
      display: flex;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .diff-row:last-child {
      border-bottom: none;
    }

    .diff-col {
      flex: 1;
      padding: 20px 24px;
      font-size: 14px;
    }

    .diff-col.dimension {
      flex: 0 0 220px;
      background: rgba(255, 255, 255, 0.02);
      font-weight: 600;
      color: #ffffff;
      display: flex;
      align-items: center;
    }

    .diff-col.legacy {
      color: var(--text-muted);
      border-right: 1px solid rgba(255, 255, 255, 0.06);
    }

    .diff-col.modern {
      color: #ffffff;
      background: rgba(0, 210, 255, 0.03);
    }

    .diff-head .diff-col {
      font-weight: 700;
      font-size: 15px;
      padding: 16px 24px;
      background: rgba(255, 255, 255, 0.05);
    }

    .diff-head .diff-col.modern {
      color: var(--primary);
      background: rgba(0, 210, 255, 0.1);
    }

    /* 5. 架构与方法说明 (Methodology) */
    .method-step-card {
      background: rgba(15, 23, 42, 0.5);
      border: 1px solid var(--glass-border);
      border-radius: 10px;
      padding: 24px;
      height: 100%;
      position: relative;
    }

    .step-index {
      font-size: 28px;
      font-weight: 800;
      color: rgba(0, 210, 255, 0.25);
      margin-bottom: 8px;
      line-height: 1;
    }

    .step-title {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
    }

    .step-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 6. 核心能力矩阵 (Capabilities) */
    .capability-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 10px;
      padding: 28px;
      height: 100%;
      transition: all 0.3s ease;
    }

    .capability-card:hover {
      border-color: rgba(0, 210, 255, 0.4);
      transform: translateY(-3px);
    }

    .cap-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: rgba(0, 210, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 22px;
      margin-bottom: 18px;
      border: 1px solid rgba(0, 210, 255, 0.2);
    }

    .cap-title {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
    }

    .cap-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 14px;
    }

    .cap-tag {
      font-size: 12px;
      color: var(--accent-green);
      background: rgba(0, 245, 160, 0.08);
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
    }

    /* 7. 解决方案与全景映射 (Solutions) */
    .sol-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      padding: 32px;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .sol-icon {
      font-size: 32px;
      color: var(--primary);
      margin-bottom: 18px;
    }

    .sol-title {
      font-size: 22px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .sol-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .sol-list {
      list-style: none;
      margin: 0 0 24px 0;
      padding: 0;
    }

    .sol-list li {
      font-size: 13px;
      color: #cbd5e1;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .sol-list li i {
      color: var(--accent-green);
      font-size: 12px;
    }

    /* 8. 演示控制台与截图舞台 (Showcase) */
    .mockup-window {
      background: #090e1c;
      border: 1px solid rgba(0, 210, 255, 0.35);
      border-radius: 14px;
      box-shadow: 0 0 50px rgba(0, 210, 255, 0.25);
      overflow: hidden;
    }

    .mockup-header {
      background: rgba(255, 255, 255, 0.04);
      padding: 12px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--glass-border);
    }

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

    .mockup-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.2);
    }

    .mockup-dot:nth-child(1) { background: #ff5f56; }
    .mockup-dot:nth-child(2) { background: #ffbd2e; }
    .mockup-dot:nth-child(3) { background: #27c93f; }

    .mockup-title {
      font-size: 12px;
      color: var(--text-dim);
      font-family: monospace;
    }

    .mockup-body {
      padding: 24px;
    }

    .stat-dashboard-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-bottom: 20px;
    }

    .dash-box {
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid var(--glass-border);
      border-radius: 8px;
      padding: 16px;
    }

    .dash-box-label {
      font-size: 12px;
      color: var(--text-dim);
      margin-bottom: 6px;
    }

    .dash-box-val {
      font-size: 22px;
      font-weight: 700;
      color: #ffffff;
    }

    /* 9. 资讯与行业动态 (News) */
    .news-featured-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      overflow: hidden;
      height: 100%;
    }

    .news-featured-card img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }

    .news-featured-body {
      padding: 28px;
    }

    .news-item-row {
      display: flex;
      gap: 20px;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 10px;
      padding: 18px 24px;
      margin-bottom: 16px;
      align-items: center;
      transition: all 0.3s ease;
    }

    .news-item-row:hover {
      border-color: rgba(0, 210, 255, 0.4);
      transform: translateX(4px);
    }

    .news-item-date {
      flex: 0 0 90px;
      text-align: center;
      padding: 10px 8px;
      background: rgba(255, 255, 255, 0.03);
      border-radius: 6px;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .news-item-day {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1;
    }

    .news-item-month {
      font-size: 12px;
      color: var(--text-dim);
      margin-top: 4px;
    }

    .news-item-content {
      flex-grow: 1;
    }

    .news-item-content h4 {
      font-size: 16px;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 6px;
    }

    .news-item-content p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.6;
    }

    /* 10. 口碑与评价墙 (Testimonials) */
    .review-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 10px;
      padding: 24px;
      height: 100%;
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .review-avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #00d2ff, #7928ca);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 18px;
      color: #ffffff;
    }

    .review-user-name {
      font-size: 16px;
      font-weight: 700;
      color: #ffffff;
      line-height: 1.2;
    }

    .review-user-role {
      font-size: 12px;
      color: var(--text-dim);
    }

    .review-stars {
      color: #f59e0b;
      font-size: 12px;
      margin-bottom: 12px;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 11. 常见异议拆解与问答 (FAQ) */
    .faq-accordion-box {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      overflow: hidden;
    }

    .faq-item-custom {
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 24px 32px;
    }

    .faq-item-custom:last-child {
      border-bottom: none;
    }

    .faq-q-title {
      font-size: 17px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .faq-q-title i {
      color: var(--primary);
      font-size: 16px;
    }

    .faq-a-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      padding-left: 28px;
    }

    /* 12. 方案选型与套餐对比 (Pricing / Packages) */
    .pricing-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      padding: 36px 28px;
      height: 100%;
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .pricing-card.featured {
      border-color: var(--primary);
      box-shadow: 0 0 35px rgba(0, 210, 255, 0.25);
      background: rgba(15, 28, 54, 0.75);
    }

    .pricing-featured-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(90deg, #00d2ff, #00f5a0);
      color: #060a14;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 20px;
      text-transform: uppercase;
    }

    .pricing-level {
      font-size: 20px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 8px;
    }

    .pricing-desc {
      font-size: 13px;
      color: var(--text-dim);
      margin-bottom: 24px;
    }

    .pricing-features-list {
      list-style: none;
      margin: 0 0 32px 0;
      padding: 0;
      flex-grow: 1;
    }

    .pricing-features-list li {
      font-size: 14px;
      color: #cbd5e1;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .pricing-features-list li i {
      color: var(--primary);
      font-size: 13px;
    }

    /* 13. 咨询入口与商业开通 (Contact & Consultation) */
    #contact {
      background: linear-gradient(180deg, rgba(6, 10, 20, 0.8) 0%, rgba(11, 28, 61, 0.6) 100%);
    }

    .form-glass-box {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      padding: 36px;
    }

    .form-group-item {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: #cbd5e1;
      margin-bottom: 8px;
    }

    .form-input-control {
      width: 100%;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--glass-border);
      border-radius: 6px;
      padding: 12px 16px;
      font-size: 14px;
      color: #ffffff;
      outline: none;
      transition: all 0.3s ease;
    }

    .form-input-control:focus {
      border-color: var(--primary);
      background: rgba(255, 255, 255, 0.08);
      box-shadow: 0 0 12px rgba(0, 210, 255, 0.3);
    }

    /* 统一页脚 (Footer) */
    .site-footer {
      background: #04070d;
      border-top: 1px solid var(--glass-border);
      padding: 60px 0 30px 0;
      font-size: 14px;
      color: var(--text-dim);
    }

    .footer-brand-title {
      font-size: 20px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .footer-brand-title i {
      color: var(--primary);
    }

    .footer-info-p {
      line-height: 1.8;
      margin-bottom: 16px;
      max-width: 380px;
    }

    .footer-links-title {
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
    }

    .footer-links-nav {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .footer-links-nav li {
      margin-bottom: 10px;
    }

    .footer-links-nav a {
      color: var(--text-muted);
      font-size: 13px;
    }

    .footer-links-nav a:hover {
      color: var(--primary);
    }

    .footer-bottom-copy {
      margin-top: 48px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 13px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    @media screen and (max-width: 768px) {
      .hero-h1 {
        font-size: 32px;
      }
      .brand-subline {
        display: none;
      }
      .stat-dashboard-grid {
        grid-template-columns: 1fr;
      }
      .diff-row {
        flex-direction: column;
      }
      .diff-col.dimension {
        flex: 1;
        background: rgba(255, 255, 255, 0.05);
      }
      .news-item-row {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-bottom-copy {
        flex-direction: column;
        text-align: center;
      }
    }