/* roulang page: index */
:root {
      --primary: #0B131F;
      --accent: #00D084;
      --accent-hover: #00b371;
      --secondary: #1E293B;
      --surface-light: #F8FAFC;
      --surface-card: #FFFFFF;
      --text-main: #0F172A;
      --text-sub: #334155;
      --text-muted: #64748B;
      --text-light: #F8FAFC;
      --text-light-sub: #94A3B8;
      --border-color: #E2E8F0;
      --border-dark: #334155;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.05);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      line-height: 1.7;
      color: var(--text-main);
      background-color: #FFFFFF;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

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

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

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 顶部双行导航 */
    .topbar {
      background-color: #080D1A;
      color: #94A3B8;
      font-size: 0.75rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .topbar-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      color: var(--accent);
      font-weight: 500;
    }
    .topbar-pulse {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background-color: var(--accent);
      box-shadow: 0 0 8px var(--accent);
    }

    .main-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);
    }
    .nav-content {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 4.5rem;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-logo .logo-icon {
      width: 2.25rem;
      height: 2.25rem;
      background: linear-gradient(135deg, #0B131F 0%, #1E293B 100%);
      border: 2px solid var(--accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 900;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.75rem;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-sub);
    }
    .nav-link:hover {
      color: var(--accent);
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      padding: 0.6rem 1.25rem;
      background-color: var(--primary);
      color: var(--text-light);
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      font-weight: 600;
      border: 1px solid #334155;
    }
    .nav-cta:hover {
      background-color: #1a273a;
      border-color: var(--accent);
      color: var(--accent);
      transform: translateY(-1px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.75rem 1.5rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all 0.2s ease;
      border: 1px solid transparent;
    }
    .btn-accent {
      background-color: var(--accent);
      color: #062419;
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 4px 12px rgba(0, 208, 132, 0.3);
      transform: translateY(-2px);
    }
    .btn-outline-dark {
      background-color: transparent;
      border-color: rgba(255,255,255,0.25);
      color: var(--text-light);
    }
    .btn-outline-dark:hover {
      background-color: rgba(255,255,255,0.08);
      border-color: var(--accent);
      color: var(--accent);
      transform: translateY(-2px);
    }
    .btn-dark {
      background-color: var(--primary);
      color: #FFFFFF;
    }
    .btn-dark:hover {
      background-color: #1a273a;
      transform: translateY(-2px);
    }

    /* 板块通用 */
    .section-spacing {
      padding: 5rem 0;
    }
    .section-spacing-sm {
      padding: 3.5rem 0;
    }
    .section-dark {
      background-color: var(--primary);
      color: var(--text-light);
    }
    .section-light {
      background-color: var(--surface-light);
      color: var(--text-main);
    }
    .section-white {
      background-color: #FFFFFF;
      color: var(--text-main);
    }
    .section-header {
      margin-bottom: 3.25rem;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      padding: 0.3rem 0.8rem;
      border-radius: var(--radius-full);
      margin-bottom: 0.75rem;
    }
    .tag-accent {
      background-color: rgba(0, 208, 132, 0.15);
      color: #008753;
      border: 1px solid rgba(0, 208, 132, 0.3);
    }
    .section-dark .tag-accent {
      background-color: rgba(0, 208, 132, 0.12);
      color: var(--accent);
      border-color: rgba(0, 208, 132, 0.25);
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1rem;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .section-dark .section-desc {
      color: var(--text-light-sub);
    }

    /* 蓝图要求：Hero - 图标矩阵 + 状态条 + 短标题（无大图首屏） */
    .hero-matrix-section {
      background: radial-gradient(circle at 50% 20%, #152238 0%, #0B131F 100%);
      color: var(--text-light);
      padding: 4.5rem 0 5.5rem 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .hero-status-bar {
      display: inline-flex;
      align-items: center;
      gap: 0.85rem;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(0, 208, 132, 0.3);
      padding: 0.45rem 1.1rem;
      border-radius: var(--radius-full);
      font-size: 0.825rem;
      margin-bottom: 1.75rem;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-h1 span {
      color: var(--accent);
    }
    .hero-intro {
      font-size: 1.05rem;
      color: #94A3B8;
      max-width: 820px;
      margin: 0 auto 2.5rem auto;
      line-height: 1.8;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 1.25rem;
      margin-bottom: 3.5rem;
      flex-wrap: wrap;
    }
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
      max-width: 1100px;
      margin: 0 auto;
    }
    .matrix-card {
      background: rgba(30, 41, 59, 0.45);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 1.5rem 1.25rem;
      text-align: left;
      transition: all 0.25s ease;
      position: relative;
    }
    .matrix-card:hover {
      background: rgba(30, 41, 59, 0.75);
      border-color: rgba(0, 208, 132, 0.4);
      transform: translateY(-3px);
    }
    .matrix-icon {
      font-size: 1.5rem;
      margin-bottom: 0.75rem;
      display: inline-block;
      color: var(--accent);
    }
    .matrix-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 0.45rem;
      color: #FFFFFF;
    }
    .matrix-card p {
      font-size: 0.85rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块 2：公司亮点与基础设施 */
    .brand-profile-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .profile-banner-wrap {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
    }
    .profile-banner-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .profile-feature-list {
      list-style: none;
      margin-top: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .profile-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 0.75rem;
    }
    .profile-feature-item svg {
      flex-shrink: 0;
      width: 1.25rem;
      height: 1.25rem;
      color: #008753;
      margin-top: 0.2rem;
    }

    /* 板块 3：核心运营痛点诊断区 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .pain-card {
      background: #FFFFFF;
      border: 1px solid #F1F5F9;
      border-left: 4px solid #EF4444;
      border-radius: var(--radius-sm);
      padding: 1.75rem 1.25rem;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .pain-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .pain-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: #DC2626;
      background: #FEE2E2;
      padding: 0.2rem 0.6rem;
      border-radius: var(--radius-full);
      display: inline-block;
      margin-bottom: 0.75rem;
    }
    .pain-card h3 {
      font-size: 1.1rem;
      margin-bottom: 0.5rem;
      color: var(--text-main);
    }
    .pain-card p {
      font-size: 0.875rem;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 板块 4：热招职位与技术岗位需求 (蓝图要素融合) */
    .careers-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }
    .career-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .career-badge {
      position: absolute;
      top: 1.25rem;
      right: 1.25rem;
      background: #F1F5F9;
      color: var(--text-sub);
      font-size: 0.75rem;
      padding: 0.2rem 0.5rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .career-card h3 {
      font-size: 1.2rem;
      margin-bottom: 0.6rem;
      padding-right: 3.5rem;
    }
    .career-req {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
    }
    .career-desc {
      font-size: 0.875rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 1.25rem;
    }

    /* 板块 5：成长路径与运维演进 */
    .path-step-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .path-card {
      background: #111C2E;
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      position: relative;
    }
    .path-step-no {
      font-size: 2.25rem;
      font-weight: 900;
      color: var(--accent);
      opacity: 0.8;
      margin-bottom: 0.5rem;
      line-height: 1;
    }
    .path-card h3 {
      font-size: 1.15rem;
      margin-bottom: 0.75rem;
      color: #FFFFFF;
    }
    .path-card p {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.65;
    }

    /* 板块 6：团队氛围与运维战备工程文化 */
    .culture-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
      align-items: center;
    }
    .culture-gallery {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1rem;
    }
    .culture-img {
      border-radius: var(--radius-sm);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      height: 180px;
    }
    .culture-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* 板块 7：热门技术工具与产品矩阵 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .product-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.25rem 1.75rem;
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .product-box:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .product-box.featured {
      border: 2px solid var(--accent);
      box-shadow: 0 8px 24px rgba(0, 208, 132, 0.12);
    }
    .flagship-label {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent);
      color: #052418;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 0.25rem 0.85rem;
      border-radius: var(--radius-full);
      letter-spacing: 0.05em;
    }
    .product-box h3 {
      font-size: 1.35rem;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }
    .product-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      min-height: 48px;
    }
    .spec-list {
      list-style: none;
      margin-bottom: 2rem;
      flex-grow: 1;
    }
    .spec-list li {
      font-size: 0.875rem;
      color: var(--text-sub);
      padding: 0.5rem 0;
      border-bottom: 1px solid #F1F5F9;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .spec-list li::before {
      content: "•";
      color: var(--accent);
      font-size: 1.2rem;
    }

    /* 板块 8：关键数据统计指标条 */
    .metrics-bar-section {
      background: #080E18;
      border-top: 1px solid rgba(255,255,255,0.08);
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-item {
      padding: 1rem 0;
    }
    .metric-value {
      font-size: 3rem;
      font-weight: 900;
      color: var(--accent);
      line-height: 1.1;
      margin-bottom: 0.5rem;
      letter-spacing: -0.02em;
    }
    .metric-label {
      font-size: 0.95rem;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 板块 9：客户证言与行业评价 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.75rem;
      box-shadow: var(--shadow-sm);
    }
    .testi-quote {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 1.5rem;
      font-style: normal;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      color: #334155;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }
    .testi-name {
      font-weight: 700;
      font-size: 0.95rem;
    }
    .testi-corp {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块 10：技术资讯与运营洞察区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .news-thumb {
      height: 190px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.03);
    }
    .news-body {
      padding: 1.5rem;
    }
    .news-meta {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 0.65rem;
    }
    .news-tag {
      background: #F1F5F9;
      color: var(--text-sub);
      padding: 0.15rem 0.5rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .news-card h3 {
      font-size: 1.15rem;
      line-height: 1.4;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }
    .news-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 11：技术运营 FAQ 手风琴区 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .faq-header {
      padding: 1.25rem 1.5rem;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFFFFF;
    }
    .faq-header:hover {
      color: #008753;
    }
    .faq-body {
      padding: 0 1.5rem 1.25rem 1.5rem;
      font-size: 0.925rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 板块 12：投递入口与底部行动转化区 */
    .cta-box-wrapper {
      background: radial-gradient(circle at 80% 20%, #1E293B 0%, #0B131F 100%);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 3.5rem 3rem;
      color: #FFFFFF;
    }
    .cta-inner-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .cta-form {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 2rem;
      border-radius: var(--radius-md);
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 500;
      color: #CBD5E1;
      margin-bottom: 0.4rem;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 0.75rem 1rem;
      background: rgba(11, 19, 31, 0.8);
      border: 1px solid #334155;
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      outline: none;
      transition: border 0.2s;
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--accent);
    }

    /* 页脚 Footer */
    .site-footer {
      background: #060A12;
      color: #94A3B8;
      font-size: 0.875rem;
      padding: 4.5rem 0 2rem 0;
      border-top: 1px solid rgba(255,255,255,0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1.2fr 1.2fr 1.6fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      padding-top: 2rem;
      border-top: 1px solid rgba(255,255,255,0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .brand-profile-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .pain-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .careers-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .path-step-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .products-grid {
        grid-template-columns: 1fr;
      }
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .topbar-content {
        flex-direction: column;
        align-items: flex-start;
      }
      .mobile-menu-btn {
        display: block;
        color: var(--primary);
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 4.5rem;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 1.5rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        gap: 1rem;
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .hero-h1 {
        font-size: 2.15rem;
      }
      .matrix-grid {
        grid-template-columns: 1fr;
      }
      .pain-grid {
        grid-template-columns: 1fr;
      }
      .careers-grid {
        grid-template-columns: 1fr;
      }
      .path-step-container {
        grid-template-columns: 1fr;
      }
      .culture-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .testimonial-grid {
        grid-template-columns: 1fr;
      }
      .news-grid {
        grid-template-columns: 1fr;
      }
      .cta-inner-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .cta-box-wrapper {
        padding: 2rem 1.5rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }