/* roulang page: index */
:root {
      --primary: #0A5C36;
      --primary-dark: #074327;
      --accent: #00E676;
      --accent-glow: rgba(0, 230, 118, 0.25);
      --secondary: #FFB300;
      --bg-base: #F4F7F5;
      --bg-card: #FFFFFF;
      --dark-surface: #101820;
      --dark-card: #18232C;
      --text-main: #0D1F17;
      --text-body: #37474F;
      --text-muted: #78909C;
      --border-light: rgba(10, 92, 54, 0.08);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 4px 16px rgba(10, 30, 20, 0.04);
      --shadow-hover: 0 12px 32px rgba(10, 92, 54, 0.12);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-base);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    h1, h2, h3, h4, h5, h6 { color: var(--text-main); font-weight: 700; line-height: 1.3; }

    /* 控制台式卡片导航 */
    .header-nav-wrapper {
      position: sticky;
      top: 16px;
      z-index: 1000;
      padding: 0 1rem;
      margin-bottom: 24px;
    }
    .header-card {
      max-width: 1280px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 12px 24px;
      box-shadow: 0 8px 24px rgba(10, 40, 25, 0.06);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      font-size: 1.5rem;
      color: var(--accent);
      background: var(--primary);
      padding: 8px;
      border-radius: 10px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
      margin: 0;
    }
    .nav-card-item a {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-body);
      background: transparent;
      border: 1px solid transparent;
    }
    .nav-card-item.active a, .nav-card-item a:hover {
      background: rgba(10, 92, 54, 0.05);
      color: var(--primary);
      border-color: rgba(10, 92, 54, 0.12);
    }
    .header-cta-btn {
      background: var(--primary);
      color: #fff;
      padding: 10px 20px;
      font-size: 0.9rem;
      font-weight: 700;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 1px solid var(--primary);
      cursor: pointer;
    }
    .header-cta-btn:hover {
      background: var(--accent);
      color: var(--dark-surface);
      border-color: var(--accent);
      box-shadow: 0 4px 16px var(--accent-glow);
    }

    /* 容器与通用Section */
    .content-container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 1.25rem;
    }
    .site-section {
      padding: 54px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 42px;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary);
      background: rgba(10, 92, 54, 0.08);
      padding: 4px 12px;
      border-radius: 999px;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 1.85rem;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.6;
    }

    /* 蓝图：斜切 Hero */
    .hero-angled-section {
      position: relative;
      background: linear-gradient(135deg, var(--dark-surface) 0%, var(--primary-dark) 100%);
      color: #FFFFFF;
      padding: 70px 0 100px;
      clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
      margin-top: -16px;
      margin-bottom: 40px;
    }
    .hero-content {
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-tag {
      background: rgba(0, 230, 118, 0.15);
      color: var(--accent);
      border: 1px solid var(--accent);
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 700;
      display: inline-block;
      margin-bottom: 20px;
    }
    .hero-title {
      color: #FFFFFF;
      font-size: 2.5rem;
      line-height: 1.25;
      margin-bottom: 20px;
    }
    .hero-desc {
      font-size: 1.05rem;
      color: #CFD8DC;
      line-height: 1.7;
      margin-bottom: 32px;
      text-align: justify;
      text-justify: inter-ideograph;
    }
    .hero-action {
      display: flex;
      justify-content: center;
      gap: 16px;
    }
    .btn-hero-main {
      background: var(--accent);
      color: var(--dark-surface);
      font-weight: 700;
      padding: 14px 32px;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-hero-main:hover {
      background: #FFFFFF;
      color: var(--primary);
      box-shadow: 0 0 24px var(--accent-glow);
    }

    /* 板块组件系统 */
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border-left: 4px solid var(--primary);
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .metric-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
    }
    .metric-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.4;
    }

    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .pain-card {
      background: #FFF5F5;
      border: 1px solid #FFEBEE;
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .pain-icon {
      color: #E53935;
      font-size: 1.5rem;
      margin-bottom: 12px;
    }
    .pain-title {
      font-size: 1rem;
      color: #C62828;
      margin-bottom: 8px;
    }
    .pain-text {
      font-size: 0.85rem;
      color: #5D4037;
      line-height: 1.5;
    }

    .service-matrix {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(10, 92, 54, 0.2);
    }
    .matrix-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .matrix-icon-box {
      width: 44px;
      height: 44px;
      background: rgba(10, 92, 54, 0.08);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 1.25rem;
    }
    .matrix-title {
      font-size: 1.15rem;
      margin: 0;
    }
    .matrix-desc {
      font-size: 0.9rem;
      color: var(--text-body);
      margin-bottom: 20px;
      line-height: 1.55;
    }
    .matrix-tags {
      margin-top: auto;
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .matrix-tag-item {
      background: var(--bg-base);
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      color: var(--text-muted);
    }

    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: rgba(10, 92, 54, 0.2);
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-title {
      font-size: 1.05rem;
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 软件基准多列卡片 */
    .benchmark-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .bench-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .bench-card.featured {
      border: 2px solid var(--primary);
    }
    .featured-badge {
      position: absolute;
      top: -12px;
      right: 16px;
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      padding: 2px 10px;
      border-radius: 999px;
      font-weight: 700;
    }
    .bench-name {
      font-size: 1.2rem;
      margin-bottom: 6px;
    }
    .bench-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      border-bottom: 1px solid #EEE;
      padding-bottom: 12px;
    }
    .bench-spec-list {
      list-style: none;
      margin: 0 0 20px;
      font-size: 0.85rem;
    }
    .bench-spec-list li {
      margin-bottom: 8px;
      display: flex;
      justify-content: space-between;
    }
    .bench-spec-list span:first-child { color: var(--text-muted); }
    .bench-spec-list span:last-child { font-weight: 600; color: var(--text-main); }
    .bench-rating {
      color: var(--secondary);
      font-size: 0.9rem;
      margin-bottom: 16px;
    }

    /* 场景与指标卡片 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      gap: 20px;
    }
    .scenario-icon {
      font-size: 2rem;
      color: var(--primary);
      flex-shrink: 0;
    }

    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .insight-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
    }
    .insight-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .insight-title {
      font-size: 1.1rem;
      margin-bottom: 10px;
    }
    .insight-desc {
      font-size: 0.85rem;
      color: var(--text-body);
      line-height: 1.5;
    }

    /* 证言与保障 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .testi-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #CFD8DC;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--dark-surface);
    }
    .testi-quote {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.6;
      font-style: italic;
    }

    /* FAQ 手风琴样式 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      padding: 16px 20px;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-answer {
      padding: 0 20px 16px;
      color: var(--text-body);
      font-size: 0.9rem;
      line-height: 1.6;
    }

    /* 底部收口卡片 */
    .final-cta-card {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      border-radius: var(--radius-lg);
      padding: 48px;
      color: #FFFFFF;
      text-align: center;
      box-shadow: 0 16px 40px rgba(10, 92, 54, 0.2);
    }
    .final-cta-card h2 { color: #FFFFFF; font-size: 2rem; margin-bottom: 16px; }
    .final-cta-card p { max-width: 760px; margin: 0 auto 24px; color: #E8F5E9; font-size: 1rem; line-height: 1.6; }

    /* 全局页脚 */
    .global-footer {
      background: var(--dark-surface);
      color: #B0BEC5;
      padding: 60px 0 24px;
      margin-top: 60px;
      font-size: 0.88rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
      gap: 32px;
      margin-bottom: 40px;
    }
    .footer-title {
      color: #FFFFFF;
      font-size: 1rem;
      margin-bottom: 16px;
      font-weight: 700;
    }
    .footer-list {
      list-style: none;
      margin: 0;
    }
    .footer-list li { margin-bottom: 8px; }
    .footer-list a:hover { color: var(--accent); }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 0.8rem;
      color: #78909C;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .metric-grid, .pain-grid, .benchmark-grid, .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-matrix, .insights-grid, .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 640px) {
      .header-card { flex-direction: column; gap: 12px; }
      .nav-links { flex-wrap: wrap; justify-content: center; }
      .hero-title { font-size: 1.8rem; }
      .metric-grid, .pain-grid, .benchmark-grid, .step-grid,
      .service-matrix, .insights-grid, .testimonial-grid,
      .scenario-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .final-cta-card { padding: 28px 16px; }
    }