/* roulang page: index */
:root {
      --primary-dark: #0B0F19;
      --primary-slate: #0F172A;
      --brand-teal: #0D9488;
      --accent-emerald: #10B981;
      --accent-orange: #F97316;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-light: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.08);
      --shadow-sm: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 12px 28px -4px rgba(15, 23, 42, 0.12);
      --radius-md: 10px;
      --radius-lg: 14px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      padding-bottom: 74px; /* for sticky bar */
    }

    a { color: var(--brand-teal); text-decoration: none; transition: all 0.25s ease; }
    a:hover { color: var(--accent-emerald); }
    img { max-width: 100%; height: auto; display: block; }
    h1, h2, h3, h4, h5 { font-weight: 700; color: var(--primary-slate); letter-spacing: -0.02em; }

    .site-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部微型信息条与主导航 */
    .top-bar-micro {
      background: #080C14;
      color: #94A3B8;
      font-size: 13px;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background: var(--accent-emerald);
      border-radius: 50%;
      margin-right: 6px;
      box-shadow: 0 0 8px var(--accent-emerald);
    }
    .site-header {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--primary-slate);
    }
    .nav-brand .brand-badge {
      background: linear-gradient(135deg, var(--brand-teal), var(--accent-emerald));
      color: #fff;
      width: 38px;
      height: 38px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
    }
    .nav-links {
      display: flex;
      gap: 24px;
      list-style: none;
      margin: 0;
    }
    .nav-links a {
      color: #334155;
      font-size: 15px;
      font-weight: 500;
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--brand-teal);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-ghost {
      border: 1px solid var(--border-light);
      padding: 8px 18px;
      border-radius: 6px;
      font-size: 14px;
      color: var(--text-main);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-ghost:hover {
      background: var(--bg-light);
      border-color: #CBD5E1;
    }
    .btn-primary-tech {
      background: linear-gradient(135deg, #0F766E, #0D9488);
      color: #FFF !important;
      padding: 9px 20px;
      border-radius: 6px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
    }
    .btn-primary-tech:hover {
      background: linear-gradient(135deg, #0D9488, #10B981);
      transform: translateY(-1px);
    }

    /* 板块通用 */
    .section-spacing {
      padding: 85px 0;
    }
    .section-spacing-alt {
      background: #FFFFFF;
      padding: 85px 0;
    }
    .section-header {
      margin-bottom: 48px;
      max-width: 820px;
    }
    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--brand-teal);
      margin-bottom: 8px;
      background: rgba(13, 148, 136, 0.1);
      padding: 4px 12px;
      border-radius: 4px;
    }
    .section-title {
      font-size: 32px;
      line-height: 1.35;
      margin-bottom: 14px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.7;
    }

    /* 1. Hero 板块（路线图预告与版本节点） */
    .hero-roadmap-stage {
      position: relative;
      background: #080E1A url('/assets/images/ecde30c12535e23c.jpg') center center / cover no-repeat;
      color: #FFFFFF;
      padding: 90px 0 100px;
      border-bottom: 1px solid var(--border-dark);
    }
    .hero-roadmap-stage::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(8, 14, 26, 0.88) 0%, rgba(11, 15, 25, 0.96) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-h1 {
      color: #FFFFFF;
      font-size: 44px;
      line-height: 1.25;
      margin-bottom: 20px;
      font-weight: 800;
    }
    .hero-lead {
      color: #CBD5E1;
      font-size: 17px;
      line-height: 1.75;
      max-width: 780px;
      margin-bottom: 35px;
    }
    /* 路线图节点条 */
    .roadmap-timeline-strip {
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 24px;
      backdrop-filter: blur(12px);
      margin-top: 40px;
    }
    .roadmap-nodes-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .roadmap-node-card {
      position: relative;
      padding: 16px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.06);
    }
    .roadmap-node-card.active-node {
      border-color: var(--accent-emerald);
      background: rgba(16, 185, 129, 0.08);
    }
    .roadmap-tag {
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 8px;
    }
    .tag-live { background: var(--accent-emerald); color: #080C14; }
    .tag-upcoming { background: rgba(255, 255, 255, 0.15); color: #E2E8F0; }
    .roadmap-node-title { font-size: 15px; font-weight: 700; color: #FFFFFF; margin-bottom: 4px; }
    .roadmap-node-desc { font-size: 13px; color: #94A3B8; line-height: 1.5; }

    /* 2. 卖点三连：深度数字化指标 */
    .metric-spotlight-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 30px;
      height: 100%;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .metric-spotlight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .spotlight-num {
      font-size: 38px;
      font-weight: 800;
      color: var(--brand-teal);
      line-height: 1;
      margin-bottom: 12px;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    .spotlight-num span { font-size: 18px; font-weight: 600; margin-left: 2px; }

    /* 3. 核心优势六宫格 */
    .strength-grid-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      margin-bottom: 24px;
      height: calc(100% - 24px);
      transition: all 0.25s ease;
    }
    .strength-grid-card:hover {
      border-color: var(--brand-teal);
      box-shadow: var(--shadow-hover);
    }
    .strength-icon {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: rgba(13, 148, 136, 0.1);
      color: var(--brand-teal);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
    }

    /* 4. 硬件与SaaS矩阵 */
    .product-tier-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .product-thumb-wrap {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .product-thumb-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .product-tier-card:hover .product-thumb-wrap img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .product-param-table {
      margin-top: 16px;
      font-size: 13px;
      background: #F1F5F9;
      border-radius: 6px;
      padding: 10px 14px;
      list-style: none;
      margin-bottom: 20px;
    }
    .product-param-table li {
      display: flex;
      justify-content: space-between;
      padding: 4px 0;
      border-bottom: 1px dashed #CBD5E1;
    }
    .product-param-table li:last-child { border-bottom: none; }

    /* 5. 深色云架构解析区 */
    .architecture-dark-sec {
      background: #080C16;
      color: #E2E8F0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .arch-layer-box {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(15, 23, 42, 0.6);
      border-radius: var(--radius-md);
      padding: 22px;
      margin-bottom: 16px;
    }
    .arch-layer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 8px;
    }

    /* 6. 场景落地左右分屏 */
    .scenario-split-item {
      display: flex;
      align-items: center;
      gap: 40px;
      margin-bottom: 48px;
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 30px;
    }
    .scenario-split-item.reverse {
      flex-direction: row-reverse;
    }
    .scenario-text { flex: 1; }
    .scenario-media {
      flex: 1;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0,0,0,0.06);
    }
    .scenario-media img {
      width: 100%;
      height: 280px;
      object-fit: cover;
    }

    /* 7. 社会认同统计条 */
    .social-proof-strip {
      background: linear-gradient(135deg, #0F172A, #1E293B);
      color: #FFF;
      border-radius: var(--radius-lg);
      padding: 40px 24px;
      box-shadow: 0 10px 30px rgba(15, 23, 42, 0.2);
    }
    .proof-stat-item {
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    .proof-stat-item:last-child { border-right: none; }
    .proof-stat-val {
      font-size: 36px;
      font-weight: 800;
      color: var(--accent-emerald);
      margin-bottom: 4px;
      font-family: ui-monospace, SFMono-Regular, monospace;
    }

    /* 8. 对比表格 */
    .comparison-table-wrapper {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .tech-comparison-table {
      width: 100%;
      margin: 0;
      border-collapse: collapse;
    }
    .tech-comparison-table th {
      background: #0F172A;
      color: #FFF;
      font-weight: 700;
      padding: 18px 24px;
      text-align: left;
    }
    .tech-comparison-table th.highlight-col {
      background: var(--brand-teal);
    }
    .tech-comparison-table td {
      padding: 16px 24px;
      border-bottom: 1px solid #EDF2F7;
      font-size: 15px;
    }
    .tech-comparison-table tr:hover td {
      background: #F8FAFC;
    }
    .tech-comparison-table td.highlight-cell {
      background: rgba(13, 148, 136, 0.04);
      font-weight: 600;
      color: #0F766E;
    }

    /* 9. 客户评价卡片 */
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .quote-icon {
      font-size: 24px;
      color: #CBD5E1;
      margin-bottom: 12px;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 20px;
      padding-top: 16px;
      border-top: 1px solid var(--border-light);
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-teal);
      font-weight: bold;
    }

    /* 10. 资讯动态 */
    .news-card-tech {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 100%;
    }
    .news-img {
      height: 160px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-content {
      padding: 20px;
    }

    /* 11. FAQ 手风琴改造 */
    .foundation-faq-wrap .accordion-title {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      margin-bottom: 8px;
      border-radius: 6px;
      font-weight: 600;
      color: var(--primary-slate);
      padding: 16px 20px;
    }
    .foundation-faq-wrap .accordion-title:hover {
      background: #F8FAFC;
    }
    .foundation-faq-wrap .accordion-content {
      border: 1px solid var(--border-light);
      border-top: none;
      background: #FFFFFF;
      margin-top: -8px;
      margin-bottom: 14px;
      border-bottom-left-radius: 6px;
      border-bottom-right-radius: 6px;
      padding: 20px;
      color: #475569;
    }

    /* 12. 终极预约表单 */
    .final-booking-panel {
      background: linear-gradient(135deg, #0F172A, #064E3B);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      color: #FFFFFF;
    }
    .booking-input {
      background: rgba(255, 255, 255, 0.08) !important;
      border: 1px solid rgba(255, 255, 255, 0.2) !important;
      color: #FFFFFF !important;
      border-radius: 6px !important;
      height: 46px !important;
      margin-bottom: 0 !important;
    }
    .booking-input::placeholder { color: #94A3B8; }

    /* 底部固定转化条 */
    .sticky-bottom-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: rgba(11, 15, 25, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      z-index: 999;
      display: flex;
      align-items: center;
    }
    .sticky-bar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .sticky-bar-text {
      color: #F1F5F9;
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* 统一页脚 */
    .site-footer {
      background: #080C14;
      color: #94A3B8;
      padding: 60px 0 30px;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 16px;
      margin-bottom: 18px;
    }
    .footer-col ul { list-style: none; margin: 0; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a { color: #94A3B8; font-size: 14px; }
    .footer-col ul li a:hover { color: var(--accent-emerald); }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 40px;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 响应式调整 */
    @media (max-width: 840px) {
      .nav-links, .top-bar-micro { display: none; }
      .hero-h1 { font-size: 30px; }
      .roadmap-nodes-grid { grid-template-columns: 1fr; }
      .scenario-split-item, .scenario-split-item.reverse { flex-direction: column; }
      .proof-stat-item { border-right: none; margin-bottom: 20px; }
      .sticky-bar-text { display: none; }
      .sticky-bar-inner { justify-content: center; }
    }