/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-hover: #0d449b;
      --accent: #00D084;
      --accent-glow: rgba(0, 208, 132, 0.2);
      --danger: #FF4D4F;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B0F19;
      --bg-dark-card: #151D2F;
      --text-main: #111827;
      --text-body: #374151;
      --text-muted: #6B7280;
      --border-color: #E2E8F0;
      --border-dark: #222F48;
      --radius-sm: 6px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --radius-full: 9999px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 20px 25px -5px rgba(15, 82, 186, 0.1);
      --font-mono: "JetBrains Mono", "SF Mono", monospace;
    }

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

    html {
      scroll-behavior: smooth;
      text-rendering: optimizeLegibility;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    body {
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    ul, ol {
      list-style: none;
    }

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

    button, input, select, textarea {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部微型信息栏 */
    .top-bar {
      background: #060911;
      color: #94A3B8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 8px 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #E2E8F0;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 8px var(--accent);
    }
    .top-links {
      display: flex;
      gap: 20px;
    }
    .top-links a:hover {
      color: #FFFFFF;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 20px;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }
    .logo-badge {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-md);
      font-weight: 900;
      font-size: 18px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-item {
      font-size: 15px;
      font-weight: 600;
      color: #4B5563;
      padding: 6px 0;
      position: relative;
    }
    .nav-item:hover, .nav-item.active {
      color: var(--primary);
    }
    .nav-item.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
    }
    .nav-cta {
      background: var(--primary);
      color: #FFFFFF;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      display: inline-block;
      transition: background 0.2s, transform 0.2s;
    }
    .nav-cta:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
    }

    /* 移动端汉堡与抽屉 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 通用组件 */
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
      padding: 14px 30px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-md);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-md);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-secondary:hover {
      background: #F1F5F9;
      border-color: #CBD5E1;
    }

    /* 板块 1: Hero 路线图与版本节点 */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #F0F4FA 0%, #FFFFFF 100%);
      padding: 80px 0 60px;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
      opacity: 0.05;
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }
    .hero-title {
      font-size: 46px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
      line-height: 1.25;
      margin-bottom: 24px;
    }
    .hero-title span {
      color: var(--primary);
    }
    .hero-lead {
      font-size: 18px;
      color: var(--text-body);
      margin-bottom: 32px;
      line-height: 1.8;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-tags {
      display: flex;
      justify-content: center;
      gap: 24px;
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .hero-tags span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .hero-tags span::before {
      content: "✓";
      color: var(--accent);
      font-weight: bold;
    }

    /* 路线图预告节点条 */
    .roadmap-bar {
      margin-top: 60px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .roadmap-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 1px solid #F1F5F9;
    }
    .roadmap-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .roadmap-status-tag {
      background: #E0F2FE;
      color: #0284C7;
      padding: 2px 10px;
      border-radius: var(--radius-full);
      font-size: 12px;
      font-weight: 600;
    }
    .roadmap-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .node-item {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 14px;
      text-align: left;
    }
    .node-version {
      font-family: var(--font-mono);
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .node-name {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .node-desc {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 2: 行业痛点洞察 */
    .pain-points-section {
      padding: 90px 0;
      background: #FFFFFF;
    }
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pain-card {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      position: relative;
      overflow: hidden;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .pain-badge {
      display: inline-block;
      background: #FEE2E2;
      color: var(--danger);
      font-size: 12px;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: var(--radius-full);
      margin-bottom: 16px;
    }
    .pain-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .pain-card p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .pain-impact {
      font-size: 13px;
      color: #991B1B;
      background: #FEF2F2;
      padding: 10px 12px;
      border-radius: var(--radius-sm);
      font-weight: 500;
    }

    /* 板块 3: 品牌与全景中台展示 */
    .overview-section {
      padding: 90px 0;
      background: #F1F5F9;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .overview-image {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
      border: 1px solid var(--border-color);
    }
    .spec-list {
      margin-top: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .spec-box {
      background: #FFFFFF;
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .spec-val {
      font-family: var(--font-mono);
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
    }
    .spec-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 板块 4: 核心优势矩阵 */
    .matrix-section {
      padding: 90px 0;
      background: #FFFFFF;
    }
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .matrix-card {
      padding: 30px;
      border-radius: var(--radius-lg);
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      transition: all 0.25s ease;
    }
    .matrix-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }
    .matrix-icon {
      width: 48px;
      height: 48px;
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: bold;
      margin-bottom: 20px;
    }
    .matrix-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .matrix-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 5: 热门解决方案 */
    .solutions-section {
      padding: 90px 0;
      background: #F8FAFC;
    }
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .solution-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .solution-thumb {
      height: 180px;
      overflow: hidden;
    }
    .solution-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s;
    }
    .solution-card:hover .solution-thumb img {
      transform: scale(1.05);
    }
    .solution-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .solution-body h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .solution-body p {
      font-size: 14px;
      color: var(--text-body);
      margin-bottom: 16px;
      line-height: 1.6;
    }
    .solution-features {
      margin-top: auto;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .solution-features li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .solution-features li::before {
      content: "•";
      color: var(--primary);
      font-size: 16px;
    }

    /* 板块 6: 深色架构与理念区 */
    .architecture-section {
      background: var(--bg-dark);
      color: #FFFFFF;
      padding: 100px 0;
      position: relative;
    }
    .architecture-section .section-title {
      color: #FFFFFF;
    }
    .architecture-section .section-desc {
      color: #94A3B8;
    }
    .architecture-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
      margin-top: 48px;
    }
    .arch-code-box {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 24px;
      font-family: var(--font-mono);
      font-size: 13px;
      line-height: 1.7;
      color: #38BDF8;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }
    .arch-text-block h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 16px;
      color: #F8FAFC;
    }
    .arch-text-block p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .security-badges {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .sec-badge {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-dark);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: #E2E8F0;
    }

    /* 板块 7: 落地实施步骤 */
    .steps-section {
      padding: 90px 0;
      background: #FFFFFF;
    }
    .steps-axis {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      position: relative;
    }
    .step-index {
      font-family: var(--font-mono);
      font-size: 28px;
      font-weight: 800;
      color: rgba(15, 82, 186, 0.2);
      margin-bottom: 8px;
    }
    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块 8: 核心业务数据指标 */
    .metrics-section {
      background: #0F172A;
      padding: 60px 0;
      color: #FFFFFF;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-value {
      font-family: var(--font-mono);
      font-size: 42px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 8px;
    }
    .metric-label {
      font-size: 14px;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 板块 9: 用户故事与应用场景 */
    .scenarios-section {
      padding: 90px 0;
      background: #F8FAFC;
    }
    .scenarios-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .scenario-img-wrap {
      height: 220px;
      overflow: hidden;
    }
    .scenario-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .scenario-content {
      padding: 28px;
      flex: 1;
    }
    .scenario-content h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .scenario-content p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .scenario-stat {
      background: #EFF6FF;
      border-left: 3px solid var(--primary);
      padding: 10px 14px;
      font-size: 13px;
      color: var(--primary);
      font-weight: 600;
    }

    /* 板块 10: 客户证言与评价 */
    .testimonials-section {
      padding: 90px 0;
      background: #FFFFFF;
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      flex-direction: column;
    }
    .stars {
      color: #F59E0B;
      font-size: 16px;
      margin-bottom: 16px;
      letter-spacing: 2px;
    }
    .testimonial-quote {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 24px;
      flex: 1;
    }
    .client-profile {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .client-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .client-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .client-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 11: 资讯与运维前沿 */
    .blog-section {
      padding: 90px 0;
      background: #FFFFFF;
    }
    .blog-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .blog-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      transition: all 0.2s;
    }
    .blog-card:hover {
      border-color: var(--primary);
    }
    .blog-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .blog-card h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .blog-link {
      font-size: 14px;
      color: var(--primary);
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块 12: FAQ 手风琴 */
    .faq-section {
      padding: 90px 0;
      background: #F8FAFC;
    }
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 页脚 */
    .site-footer {
      background: var(--bg-dark);
      color: #94A3B8;
      padding: 80px 0 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 60px;
    }
    .footer-brand h2 {
      color: #FFFFFF;
      font-size: 20px;
      margin-bottom: 16px;
    }
    .footer-links h4 {
      color: #FFFFFF;
      font-size: 15px;
      margin-bottom: 20px;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .copyright {
      text-align: center;
      padding-top: 40px;
      border-top: 1px solid var(--border-dark);
      font-size: 13px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .pain-grid, .matrix-grid, .solutions-grid { grid-template-columns: repeat(2, 1fr); }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
    }
    @media (max-width: 768px) {
      .nav-menu { display: none; }
      .mobile-menu-toggle { display: block; }
      .pain-grid, .matrix-grid, .solutions-grid, .blog-grid, .testimonials-grid { grid-template-columns: 1fr; }
      .overview-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .hero-title { font-size: 36px; }
    }