/* roulang page: index */
:root {
      --primary-dark: #0b0f19;
      --secondary-dark: #0f172a;
      --navy-deep: #1e293b;
      --brand-blue: #0284c7;
      --brand-blue-hover: #0369a1;
      --cyan-accent: #0ea5e9;
      --accent-emerald: #059669;
      --accent-amber: #f59e0b;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border-light: #e2e8f0;
      --border-dark: #334155;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --text-light: #f8fafc;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-light);
    }

    body {
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部公告条 */
    .top-bar {
      background-color: var(--primary-dark);
      color: #94a3b8;
      font-size: 13px;
      border-bottom: 1px solid var(--border-dark);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-tags span {
      display: inline-flex;
      align-items: center;
      margin-right: 18px;
    }
    .top-bar-tags span::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--accent-emerald);
      border-radius: 50%;
      margin-right: 6px;
    }

    /* 主导航 */
    header.site-header {
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(8px);
      position: sticky;
      top: 0;
      z-index: 100;
      border-bottom: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 20px;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }
    .logo-badge {
      background: var(--brand-blue);
      color: #fff;
      font-size: 11px;
      padding: 2px 7px;
      border-radius: 4px;
      font-weight: 600;
    }
    .nav-links {
      display: flex;
      list-style: none;
      gap: 24px;
    }
    .nav-links a {
      font-size: 14px;
      font-weight: 500;
      color: #475569;
      transition: color 0.2s;
    }
    .nav-links a:hover {
      color: var(--brand-blue);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 8px;
      transition: all 0.2s ease;
      cursor: pointer;
      border: 1px solid transparent;
    }
    .btn-primary {
      background: var(--brand-blue);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--brand-blue-hover);
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
    }
    .btn-outline {
      background: transparent;
      border-color: #cbd5e1;
      color: #334155;
    }
    .btn-outline:hover {
      border-color: var(--brand-blue);
      color: var(--brand-blue);
      background: #f0f9ff;
    }
    .btn-dark {
      background: #1e293b;
      color: #fff;
    }
    .btn-dark:hover {
      background: #334155;
    }

    /* Section 通用规范 */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-title-wrap {
      margin-bottom: 48px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--brand-blue);
      background: #e0f2fe;
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 12px;
    }
    .section-tag.dark-tag {
      background: rgba(14, 165, 233, 0.15);
      color: #38bdf8;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
      line-height: 1.7;
    }

    /* 1. Hero：白皮书获客蓝图 */
    #hero {
      padding: 60px 0 90px;
      background: linear-gradient(180deg, #f0fdf4 0%, #f8fafc 100%), url('/assets/images/e3e9292b9acca77f.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      border-bottom: 1px solid var(--border-light);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-left h1 {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 20px;
    }
    .hero-intro {
      font-size: 15px;
      color: #475569;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .whitepaper-preview {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 20px;
      box-shadow: var(--shadow-md);
      margin-bottom: 24px;
    }
    .wp-header {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 12px;
    }
    .wp-badge {
      background: #fee2e2;
      color: #dc2626;
      font-size: 11px;
      padding: 2px 6px;
      border-radius: 4px;
    }
    .wp-toc {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      font-size: 13px;
      color: #334155;
    }
    .wp-toc li {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .wp-toc li::before {
      content: "✓";
      color: var(--accent-emerald);
      font-weight: bold;
    }
    .lead-form-box {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 14px;
      padding: 32px 28px;
      box-shadow: var(--shadow-xl);
    }
    .lead-form-box h3 {
      font-size: 19px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .lead-form-box p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 12px;
      font-weight: 600;
      color: #475569;
      margin-bottom: 6px;
    }
    .form-input {
      width: 100%;
      height: 42px;
      padding: 0 12px;
      border: 1px solid #cbd5e1;
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: border 0.2s;
    }
    .form-input:focus {
      border-color: var(--brand-blue);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
    }
    .form-btn-submit {
      width: 100%;
      height: 44px;
      margin-top: 10px;
    }
    .form-note {
      font-size: 11px;
      color: #94a3b8;
      text-align: center;
      margin-top: 10px;
    }

    /* 2. 产品价值区 */
    #values {
      background-color: var(--bg-white);
    }
    .values-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .value-card {
      background: #f8fafc;
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 28px;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .value-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .value-icon {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: #e0f2fe;
      color: var(--brand-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 20px;
      margin-bottom: 20px;
    }
    .value-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: #0f172a;
    }
    .value-card p {
      font-size: 14px;
      color: #475569;
      line-height: 1.65;
    }

    /* 3. 功能展示区 */
    #features {
      background-color: #f1f5f9;
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-box {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 26px;
      position: relative;
    }
    .feature-tag {
      font-size: 11px;
      font-weight: 700;
      color: var(--brand-blue);
      background: #e0f2fe;
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 14px;
    }
    .feature-box h4 {
      font-size: 17px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
    }
    .feature-box p {
      font-size: 14px;
      color: #475569;
      line-height: 1.6;
    }

    /* 4. 三步上手区 */
    #steps {
      background-color: var(--bg-white);
    }
    .steps-container {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 30px;
      background: #fafafa;
    }
    .step-num {
      width: 40px;
      height: 40px;
      background: #0f172a;
      color: #fff;
      font-weight: 800;
      font-size: 18px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
    }
    .step-card h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .step-card p {
      font-size: 14px;
      color: #64748b;
      line-height: 1.65;
    }

    /* 5. 热门套件与配置 */
    #suites {
      background-color: #f8fafc;
    }
    .suites-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .suite-card {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: 14px;
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .suite-card.highlight {
      border-color: var(--brand-blue);
      box-shadow: 0 10px 30px rgba(2, 132, 199, 0.12);
      position: relative;
    }
    .suite-card.highlight::after {
      content: "推荐部署";
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--brand-blue);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 999px;
    }
    .suite-name {
      font-size: 20px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .suite-desc {
      font-size: 13px;
      color: #64748b;
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .suite-specs {
      list-style: none;
      margin-bottom: 28px;
      font-size: 13px;
      color: #334155;
    }
    .suite-specs li {
      padding: 8px 0;
      border-bottom: 1px dashed #e2e8f0;
      display: flex;
      justify-content: space-between;
    }

    /* 6. 硬核深色理念与SOA架构蓝图 */
    #ideology {
      background-color: var(--primary-dark);
      color: var(--text-light);
    }
    .ideology-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .ideology-text h3 {
      font-size: 28px;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 20px;
      color: #f8fafc;
    }
    .ideology-text p {
      font-size: 15px;
      color: #94a3b8;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .arch-stack {
      background: #111827;
      border: 1px solid var(--border-dark);
      border-radius: 12px;
      padding: 24px;
    }
    .arch-layer {
      padding: 14px 18px;
      border-radius: 8px;
      background: #1f2937;
      border-left: 4px solid var(--brand-blue);
      margin-bottom: 12px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      font-weight: 600;
    }
    .arch-layer:last-child {
      margin-bottom: 0;
    }
    .arch-layer span.chip {
      font-size: 11px;
      background: #374151;
      padding: 2px 8px;
      border-radius: 4px;
      color: #38bdf8;
    }

    /* 7. 行业方案落地场景 */
    #scenarios {
      background-color: var(--bg-white);
    }
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .scenario-card {
      border: 1px solid var(--border-light);
      border-radius: 12px;
      overflow: hidden;
      background: #fff;
    }
    .scenario-img-wrap {
      height: 180px;
      overflow: hidden;
      background: #e2e8f0;
    }
    .scenario-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s;
    }
    .scenario-card:hover .scenario-img-wrap img {
      transform: scale(1.05);
    }
    .scenario-body {
      padding: 22px;
    }
    .scenario-body h4 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .scenario-body p {
      font-size: 13px;
      color: #64748b;
      line-height: 1.6;
    }

    /* 8. 标杆量产案例 */
    #stories {
      background-color: #f8fafc;
    }
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .story-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 14px;
      padding: 32px;
    }
    .story-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .story-client-type {
      font-size: 11px;
      font-weight: 700;
      color: #0369a1;
      background: #e0f2fe;
      padding: 3px 8px;
      border-radius: 4px;
    }
    .story-card h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .story-card p {
      font-size: 14px;
      color: #475569;
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .story-stats {
      display: flex;
      gap: 20px;
      border-top: 1px solid #f1f5f9;
      padding-top: 16px;
    }
    .story-stat-val {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent-emerald);
    }
    .story-stat-lbl {
      font-size: 12px;
      color: #94a3b8;
    }

    /* 9. 关键指标数据条 */
    #metrics {
      background-color: var(--secondary-dark);
      color: #fff;
      padding: 60px 0;
    }
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item h3 {
      font-size: 38px;
      font-weight: 900;
      color: #38bdf8;
      letter-spacing: -1px;
      margin-bottom: 6px;
    }
    .metric-item p {
      font-size: 14px;
      color: #94a3b8;
    }

    /* 10. 工程师评价墙 */
    #reviews {
      background-color: #f1f5f9;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 24px;
    }
    .review-quote {
      font-size: 14px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .reviewer-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: #64748b;
    }
    .reviewer-name {
      font-size: 14px;
      font-weight: 700;
      color: #0f172a;
    }
    .reviewer-title {
      font-size: 12px;
      color: #64748b;
    }

    /* 11. 系统环境与部署规范要求 */
    #sysreq {
      background-color: #ffffff;
    }
    .req-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .req-box {
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 28px;
    }
    .req-box h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 16px;
      color: #0f172a;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .req-list {
      list-style: none;
      font-size: 13px;
      color: #475569;
    }
    .req-list li {
      padding: 8px 0;
      border-bottom: 1px solid #f8fafc;
      display: flex;
      justify-content: space-between;
    }
    .req-list li span.val {
      font-weight: 600;
      color: #1e293b;
    }

    /* 12. 技术专栏资讯 */
    #news {
      background-color: #f8fafc;
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: 12px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 160px;
      background: #e2e8f0;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-content {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 12px;
      color: #94a3b8;
      margin-bottom: 8px;
    }
    .news-content h4 {
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-content p {
      font-size: 13px;
      color: #64748b;
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--brand-blue);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 转化收口区 */
    #cta {
      background: linear-gradient(135deg, #0b0f19 0%, #1e293b 100%);
      color: #fff;
      padding: 70px 0;
    }
    .cta-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-dark);
      border-radius: 16px;
      padding: 48px;
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }
    .cta-card h3 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 16px;
      color: #f8fafc;
    }
    .cta-card p {
      font-size: 15px;
      color: #94a3b8;
      max-width: 600px;
      margin: 0 auto 30px;
      line-height: 1.7;
    }
    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .cta-badge-list {
      display: flex;
      justify-content: center;
      gap: 24px;
      margin-top: 32px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 12px;
      color: #94a3b8;
      flex-wrap: wrap;
    }

    /* 全局页脚 */
    footer.site-footer {
      background-color: #070a12;
      color: #94a3b8;
      padding: 64px 0 32px;
      border-top: 1px solid #1e293b;
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h5 {
      color: #f8fafc;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94a3b8;
      transition: color 0.2s;
    }
    .footer-links a:hover {
      color: #38bdf8;
    }
    .footer-contact-item {
      display: flex;
      gap: 8px;
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
      color: #64748b;
    }

    /* 移动端菜单控制 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 1px solid #cbd5e1;
      padding: 6px 10px;
      border-radius: 6px;
      cursor: pointer;
      font-size: 18px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid,
      .ideology-grid,
      .stories-grid,
      .req-grid {
        grid-template-columns: 1fr;
      }
      .values-grid,
      .features-grid,
      .suites-grid,
      .scenarios-grid,
      .reviews-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--border-light);
        padding: 20px;
        gap: 14px;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-cta-btn {
        display: none;
      }
      .hero-left h1 {
        font-size: 28px;
      }
      .values-grid,
      .features-grid,
      .suites-grid,
      .steps-container,
      .scenarios-grid,
      .reviews-grid,
      .news-grid {
        grid-template-columns: 1fr;
      }
      .metrics-bar {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .wp-toc {
        grid-template-columns: 1fr;
      }
      .cta-card {
        padding: 30px 20px;
      }
      .cta-card h3 {
        font-size: 24px;
      }
    }