/* roulang page: index */
:root {
      --primary: #0066FF;
      --primary-hover: #1f7aff;
      --accent: #00F0FF;
      --energy: #FF6B00;
      --bg-main: #070B14;
      --bg-alt: #0D1527;
      --bg-card: rgba(13, 21, 39, 0.75);
      --text-main: #FFFFFF;
      --text-muted: #94A3B8;
      --text-faint: #64748B;
      --border-subtle: rgba(0, 240, 255, 0.15);
      --border-light: rgba(255, 255, 255, 0.08);
      --glow-blue: 0 0 25px rgba(0, 240, 255, 0.35);
      --glow-accent: 0 10px 30px -10px rgba(0, 102, 255, 0.4);
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
    }

    * { box-sizing: border-box; }
    html, body {
      margin: 0;
      padding: 0;
      font-family: var(--font-stack);
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.65;
      font-size: 16px;
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
    }

    a { color: var(--accent); text-decoration: none; transition: all 0.25s ease; }
    a:hover, a:focus { color: #fff; text-decoration: none; }
    img { max-width: 100%; height: auto; display: block; }

    /* 全局板块与容器规范 */
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .section-header {
      margin-bottom: 56px;
      text-align: center;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      border-radius: 999px;
      background: rgba(0, 240, 255, 0.08);
      color: var(--accent);
      border: 1px solid var(--border-subtle);
      margin-bottom: 14px;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto;
      line-height: 1.7;
    }

    /* 顶部双行导航 */
    .top-announce-bar {
      background: #04070D;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.85rem;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--energy);
      box-shadow: 0 0 8px var(--energy);
      margin-right: 6px;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 0.4; transform: scale(0.9); }
      50% { opacity: 1; transform: scale(1.2); }
      100% { opacity: 0.4; transform: scale(0.9); }
    }
    .main-navigation-bar {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(7, 11, 20, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
      padding: 14px 0;
      transition: all 0.3s ease;
    }
    .site-brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.02em;
    }
    .site-brand-logo .logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #04070D;
      font-size: 1.1rem;
    }
    .nav-links {
      display: flex;
      gap: 24px;
      align-items: center;
      margin: 0;
      list-style: none;
    }
    .nav-links a {
      color: var(--text-muted);
      font-size: 0.95rem;
      font-weight: 500;
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: #fff;
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
      box-shadow: 0 0 8px var(--accent);
    }
    .btn-glow-nav {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #04070D !important;
      font-weight: 700;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
      border: none;
      display: inline-block;
    }
    .btn-glow-nav:hover {
      box-shadow: 0 0 24px rgba(0, 240, 255, 0.6);
      transform: translateY(-2px);
      color: #04070D !important;
    }

    /* 按钮规范 */
    .btn-primary-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #04070D;
      font-weight: 700;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      box-shadow: var(--glow-blue);
      transition: all 0.25s ease;
      border: none;
      cursor: pointer;
    }
    .btn-primary-action:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 32px rgba(0, 240, 255, 0.7);
      color: #000;
    }
    .btn-secondary-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.05);
      color: #fff;
      font-weight: 600;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
      transition: all 0.25s ease;
    }
    .btn-secondary-action:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--accent);
      color: #fff;
    }

    /* 玻璃拟态卡片 */
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 32px;
      position: relative;
      transition: all 0.3s ease;
      height: 100%;
    }
    .glass-card:hover {
      border-color: rgba(0, 240, 255, 0.45);
      box-shadow: var(--glow-accent);
      transform: translateY(-4px);
    }

    /* Hero / 首屏轮播与直播预告 */
    .hero-banner {
      position: relative;
      background: linear-gradient(180deg, rgba(7, 11, 20, 0.75) 0%, #070B14 100%),
                  url('/assets/images/6ba54fe54aaa2bf7.webp') center center/cover no-repeat;
      padding: 100px 0 110px;
      border-bottom: 1px solid var(--border-light);
      overflow: hidden;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 24px;
      background: linear-gradient(180deg, #FFFFFF 30%, #A5C9FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-p {
      font-size: 1.15rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 640px;
    }
    .hero-badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: rgba(0, 102, 255, 0.2);
      border: 1px solid rgba(0, 240, 255, 0.3);
      border-radius: 999px;
      color: var(--accent);
      font-size: 0.9rem;
      margin-bottom: 20px;
    }
    .live-broadcast-box {
      background: rgba(13, 21, 39, 0.85);
      border: 1px solid rgba(0, 240, 255, 0.3);
      border-radius: var(--radius-lg);
      padding: 28px;
      backdrop-filter: blur(20px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
      position: relative;
    }
    .live-preview-media {
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 20px;
      border: 1px solid var(--border-light);
      position: relative;
    }
    .live-tag-float {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(255, 107, 0, 0.9);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      letter-spacing: 0.05em;
    }
    .countdown-timer-grid {
      display: flex;
      gap: 12px;
      margin: 18px 0;
    }
    .countdown-item {
      flex: 1;
      background: rgba(7, 11, 20, 0.8);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 10px;
      text-align: center;
    }
    .countdown-val {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--accent);
      font-family: monospace;
      display: block;
    }
    .countdown-lbl {
      font-size: 0.75rem;
      color: var(--text-faint);
    }

    /* 指标统计通栏 */
    .metric-strip-box {
      background: linear-gradient(90deg, #0A1020 0%, #0D162C 50%, #0A1020 100%);
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
      padding: 48px 0;
    }
    .metric-num {
      font-size: 2.85rem;
      font-weight: 800;
      color: #fff;
      font-variant-numeric: tabular-nums;
      line-height: 1;
      margin-bottom: 8px;
      background: linear-gradient(180deg, #FFFFFF, var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .metric-sub {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin: 0;
    }

    /* 技术架构两列 */
    .arch-code-window {
      background: #040812;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    }
    .arch-header {
      background: #0B1120;
      padding: 10px 16px;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid var(--border-light);
    }
    .dot-circle {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #334155;
    }
    .dot-red { background: #EF4444; }
    .dot-yellow { background: #F59E0B; }
    .dot-green { background: #10B981; }
    .arch-body {
      padding: 24px;
      font-size: 0.9rem;
      color: #A5B4FC;
      line-height: 1.8;
      font-family: Consolas, Monaco, monospace;
    }
    .spec-check-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .spec-check-list li {
      position: relative;
      padding-left: 28px;
      margin-bottom: 16px;
      color: #CBD5E1;
      font-size: 0.95rem;
    }
    .spec-check-list li i {
      position: absolute;
      left: 0;
      top: 5px;
      color: var(--accent);
      font-size: 0.9rem;
    }

    /* 产品卡片对比与高亮 */
    .product-tier-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
      height: 100%;
    }
    .product-tier-card.featured {
      border-color: var(--accent);
      box-shadow: 0 0 35px rgba(0, 240, 255, 0.2);
      background: linear-gradient(180deg, rgba(13, 21, 39, 0.95) 0%, rgba(13, 21, 39, 0.75) 100%);
    }
    .featured-badge-top {
      position: absolute;
      top: -12px;
      right: 24px;
      background: linear-gradient(90deg, var(--energy), #FF8A00);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 999px;
      text-transform: uppercase;
      box-shadow: 0 2px 10px rgba(255, 107, 0, 0.4);
    }
    .product-title {
      font-size: 1.35rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }
    .product-target {
      color: var(--accent);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 18px;
      text-transform: uppercase;
    }
    .product-feature-points {
      list-style: none;
      margin: 20px 0;
      padding: 0;
      flex-grow: 1;
    }
    .product-feature-points li {
      padding: 10px 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
      color: #CBD5E1;
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* 成果对比 Before / After 表格化卡片 */
    .compare-container {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .compare-row {
      display: flex;
      border-bottom: 1px solid var(--border-light);
    }
    .compare-row:last-child { border-bottom: none; }
    .compare-cell {
      padding: 20px 24px;
      flex: 1;
    }
    .compare-cell.dimension {
      flex: 0 0 240px;
      background: rgba(255, 255, 255, 0.02);
      font-weight: 600;
      color: #CBD5E1;
      border-right: 1px solid var(--border-light);
      display: flex;
      align-items: center;
    }
    .compare-cell.legacy {
      color: #94A3B8;
      background: rgba(255, 70, 70, 0.02);
      border-right: 1px solid var(--border-light);
    }
    .compare-cell.platform {
      color: #E2E8F0;
      background: rgba(0, 240, 255, 0.03);
      font-weight: 500;
    }
    .compare-tag-old {
      display: inline-block;
      color: #F87171;
      margin-right: 6px;
    }
    .compare-tag-new {
      display: inline-block;
      color: var(--accent);
      margin-right: 6px;
    }

    /* 资讯摘要卡 */
    .news-card-media {
      border-radius: var(--radius-md) var(--radius-md) 0 0;
      overflow: hidden;
      height: 190px;
    }
    .news-card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .glass-card-news:hover .news-card-media img {
      transform: scale(1.05);
    }
    .glass-card-news {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .news-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-faint);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-summary {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 18px;
      flex-grow: 1;
    }

    /* 手风琴 FAQ 覆写 Foundation 默认样式 */
    .accordion {
      background: transparent;
      border: none;
    }
    .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      margin-bottom: 14px;
      border-radius: var(--radius-sm) !important;
      overflow: hidden;
    }
    .accordion-title {
      background: transparent !important;
      color: #fff !important;
      font-size: 1.05rem;
      font-weight: 600;
      padding: 20px 24px;
      border: none !important;
      position: relative;
    }
    .accordion-title:hover {
      color: var(--accent) !important;
      background: rgba(255, 255, 255, 0.02) !important;
    }
    .accordion-title::before {
      color: var(--accent) !important;
      font-size: 1.2rem;
      right: 24px;
    }
    .accordion-content {
      background: rgba(7, 11, 20, 0.6) !important;
      border-top: 1px solid var(--border-light) !important;
      color: #CBD5E1 !important;
      padding: 24px;
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* 客户评价卡片 */
    .review-user-info {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }
    .review-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, #1E293B, #0F172A);
      border: 1px solid var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 1.2rem;
    }
    .review-stars {
      color: #FBBF24;
      font-size: 0.85rem;
      margin-bottom: 12px;
    }

    /* 转化表单 */
    .lead-form-panel {
      background: linear-gradient(145deg, rgba(13, 21, 39, 0.95), rgba(7, 11, 20, 0.95));
      border: 1px solid rgba(0, 240, 255, 0.3);
      box-shadow: 0 0 40px rgba(0, 102, 255, 0.25);
      border-radius: var(--radius-lg);
      padding: 44px;
    }
    .form-custom-input, .form-custom-select, .form-custom-textarea {
      background: #080D1A !important;
      border: 1px solid rgba(255, 255, 255, 0.12) !important;
      color: #fff !important;
      border-radius: var(--radius-sm) !important;
      padding: 12px 16px !important;
      height: auto !important;
      margin-bottom: 20px !important;
      box-shadow: none !important;
    }
    .form-custom-input:focus, .form-custom-select:focus, .form-custom-textarea:focus {
      border-color: var(--accent) !important;
      background: #0B1326 !important;
    }
    .form-custom-select option {
      background: #080D1A;
      color: #fff;
    }
    .form-label-custom {
      color: #CBD5E1;
      font-size: 0.9rem;
      font-weight: 500;
      margin-bottom: 6px;
    }

    /* 页脚 */
    .site-footer {
      background: #03060C;
      border-top: 1px solid var(--border-light);
      padding: 72px 0 32px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .footer-col-title {
      color: #fff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list a {
      color: var(--text-muted);
    }
    .footer-links-list a:hover {
      color: var(--accent);
    }
    .footer-bottom-copy {
      margin-top: 56px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.8rem;
      color: var(--text-faint);
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-h1 { font-size: 2.4rem; }
      .section-wrap { padding: 64px 0; }
    }
    @media (max-width: 768px) {
      .hero-h1 { font-size: 1.85rem; }
      .nav-links { display: none; }
      .compare-row { flex-direction: column; }
      .compare-cell.dimension { flex: auto; border-right: none; border-bottom: 1px solid var(--border-light); }
      .lead-form-panel { padding: 24px; }
      .section-wrap { padding: 56px 0; }
    }