/* roulang page: index */
:root {
      --primary: #d97706;
      --primary-hover: #b45309;
      --primary-light: #fef3c7;
      --accent: #15803d;
      --accent-hover: #166534;
      --dark-bg: #1c1917;
      --dark-surface: #292524;
      --dark-border: #44403c;
      --dark-text: #f5f5f4;
      --dark-muted: #a8a29e;
      --light-bg: #f8fafc;
      --light-surface: #ffffff;
      --light-border: #e2e8f0;
      --light-text: #1e293b;
      --light-muted: #64748b;
      --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --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-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-base);
      background-color: var(--light-bg);
      color: var(--light-text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
    }
    ul, ol {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.2s ease;
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      color: #ffffff;
    }
    .btn-outline {
      background-color: transparent;
      border-color: var(--dark-border);
      color: var(--dark-text);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #ffffff;
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
    }
    .btn-sm {
      padding: 6px 14px;
      font-size: 13px;
    }
    .badge {
      display: inline-block;
      padding: 2px 8px;
      font-size: 12px;
      font-weight: 600;
      border-radius: 2px;
      text-transform: uppercase;
    }
    .badge-amber {
      background-color: var(--primary-light);
      color: #92400e;
    }
    .badge-green {
      background-color: #dcfce7;
      color: #166534;
    }
    .badge-dark {
      background-color: #374151;
      color: #f3f4f6;
    }
    .badge-gray {
      background-color: #f1f5f9;
      color: #475569;
    }
    
    /* 导航栏 */
    .site-header {
      background-color: var(--dark-bg);
      border-bottom: 1px solid var(--dark-border);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-mark {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary) 0%, #ca8a04 100%);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-size: 20px;
      font-weight: 800;
    }
    .brand-name {
      font-size: 20px;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      color: var(--dark-muted);
      font-weight: 500;
    }
    .nav-link:hover, .nav-link.active {
      color: #ffffff;
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* 工业参数首屏 Hero */
    .hero-section {
      background-color: var(--dark-bg);
      color: var(--dark-text);
      padding: 60px 0 80px 0;
      border-bottom: 1px solid var(--dark-border);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.25fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-desc {
      font-size: 16px;
      line-height: 1.7;
      color: var(--dark-muted);
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .hero-metrics-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      padding-top: 24px;
      border-top: 1px solid var(--dark-border);
    }
    .metric-unit {
      border-left: 2px solid var(--primary);
      padding-left: 14px;
    }
    .metric-value {
      font-size: 26px;
      font-weight: 700;
      color: #ffffff;
      font-family: monospace;
    }
    .metric-label {
      font-size: 13px;
      color: var(--dark-muted);
      margin-top: 4px;
    }
    .hero-specs-card {
      background-color: var(--dark-surface);
      border: 1px solid var(--dark-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-lg);
    }
    .card-terminal-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 14px;
      margin-bottom: 16px;
      border-bottom: 1px solid var(--dark-border);
    }
    .terminal-title {
      font-size: 14px;
      font-weight: 600;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .terminal-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #22c55e;
      box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 13px;
    }
    .spec-table th, .spec-table td {
      padding: 10px 8px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      text-align: left;
    }
    .spec-table th {
      color: var(--dark-muted);
      font-weight: 500;
    }
    .spec-table td {
      color: #ffffff;
      font-family: monospace;
    }
    .spec-trend-up {
      color: #22c55e;
    }
    .spec-trend-flat {
      color: var(--primary);
    }

    /* 板块标准排版 */
    .section-standard {
      padding: 64px 0;
      border-bottom: 1px solid var(--light-border);
    }
    .section-dark {
      background-color: var(--dark-bg);
      color: var(--dark-text);
      border-bottom: 1px solid var(--dark-border);
    }
    .section-header {
      margin-bottom: 36px;
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      flex-wrap: wrap;
      gap: 16px;
    }
    .section-title {
      font-size: 26px;
      font-weight: 700;
      color: inherit;
      line-height: 1.3;
      letter-spacing: -0.5px;
    }
    .section-intro {
      font-size: 15px;
      color: var(--light-muted);
      max-width: 680px;
      margin-top: 8px;
      line-height: 1.6;
    }
    .section-dark .section-intro {
      color: var(--dark-muted);
    }

    /* 左右分栏：资讯流与热榜 */
    .split-layout {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 36px;
    }
    .news-feed-item {
      display: flex;
      gap: 20px;
      padding: 20px 0;
      border-bottom: 1px solid var(--light-border);
    }
    .news-feed-item:first-child {
      padding-top: 0;
    }
    .news-feed-item:last-child {
      border-bottom: none;
    }
    .feed-item-tag {
      flex-shrink: 0;
      width: 110px;
      font-size: 13px;
      color: var(--light-muted);
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .feed-item-content h3 {
      font-size: 17px;
      font-weight: 600;
      line-height: 1.4;
      margin-bottom: 6px;
      color: var(--light-text);
    }
    .feed-item-content h3 a:hover {
      color: var(--primary);
    }
    .feed-item-content p {
      font-size: 14px;
      color: var(--light-muted);
      line-height: 1.6;
    }

    /* 右侧热榜 */
    .side-card-panel {
      background-color: var(--light-surface);
      border: 1px solid var(--light-border);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }
    .side-panel-title {
      font-size: 16px;
      font-weight: 700;
      padding-bottom: 12px;
      margin-bottom: 14px;
      border-bottom: 2px solid var(--primary);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .side-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .side-list-item {
      display: flex;
      align-items: baseline;
      gap: 10px;
      font-size: 14px;
    }
    .rank-idx {
      font-size: 13px;
      font-weight: 700;
      color: #94a3b8;
      width: 20px;
    }
    .rank-idx.top {
      color: var(--primary);
    }
    .rank-text {
      flex: 1;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      color: var(--light-text);
    }
    .rank-text:hover {
      color: var(--primary);
    }

    /* 专题条横向滑轨 / 网格 */
    .topics-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .topic-feature-card {
      background-color: var(--light-surface);
      border: 1px solid var(--light-border);
      border-radius: var(--radius-md);
      padding: 24px;
      border-top: 4px solid var(--primary);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .topic-feature-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .topic-icon-label {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 10px;
      letter-spacing: 0.5px;
    }
    .topic-feature-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 10px;
      color: var(--light-text);
    }
    .topic-feature-card p {
      font-size: 13px;
      color: var(--light-muted);
      line-height: 1.6;
    }

    /* 参数速览表格 */
    .specs-table-wrapper {
      background-color: var(--light-surface);
      border: 1px solid var(--light-border);
      border-radius: var(--radius-md);
      overflow-x: auto;
    }
    .industrial-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .industrial-table th {
      background-color: #f8fafc;
      padding: 14px 18px;
      font-weight: 600;
      color: var(--light-text);
      border-bottom: 1px solid var(--light-border);
    }
    .industrial-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--light-border);
      color: var(--light-text);
    }
    .industrial-table tr:last-child td {
      border-bottom: none;
    }
    .industrial-table tr:hover td {
      background-color: #f1f5f9;
    }

    /* 快捷入口矩阵 */
    .portal-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .portal-box {
      background-color: var(--light-surface);
      border: 1px solid var(--light-border);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      text-align: center;
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
    }
    .portal-box:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }
    .portal-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--light-text);
    }
    .portal-subtitle {
      font-size: 12px;
      color: var(--light-muted);
    }

    /* 种植管理方案流程 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .step-item-card {
      background-color: var(--light-surface);
      border: 1px solid var(--light-border);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-badge-no {
      position: absolute;
      top: 18px;
      right: 18px;
      font-size: 22px;
      font-weight: 800;
      color: #e2e8f0;
      font-family: monospace;
    }
    .step-item-card h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--light-text);
    }
    .step-item-card p {
      font-size: 13px;
      color: var(--light-muted);
      line-height: 1.6;
    }

    /* 产销匹配清单 */
    .order-feed-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .order-feed-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      background-color: var(--light-surface);
      border: 1px solid var(--light-border);
      border-radius: var(--radius-sm);
    }
    .order-core-info {
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .order-origin {
      font-weight: 700;
      font-size: 15px;
      color: var(--light-text);
    }
    .order-detail-meta {
      font-size: 13px;
      color: var(--light-muted);
      display: flex;
      gap: 16px;
    }

    /* 媒体与合作展示 */
    .partner-logo-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .partner-logo-box {
      background-color: var(--light-surface);
      border: 1px solid var(--light-border);
      border-radius: var(--radius-sm);
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 14px;
      color: var(--light-muted);
      text-align: center;
      padding: 0 12px;
    }
    .partner-logo-box:hover {
      color: var(--primary);
      border-color: #cbd5e1;
    }

    /* 口碑气泡评测 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-bubble {
      background-color: var(--light-surface);
      border: 1px solid var(--light-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .bubble-author-bar {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .bubble-avatar {
      width: 42px;
      height: 42px;
      background-color: #e2e8f0;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #475569;
    }
    .author-details h4 {
      font-size: 15px;
      font-weight: 600;
    }
    .author-details span {
      font-size: 12px;
      color: var(--light-muted);
    }
    .testimonial-bubble p {
      font-size: 14px;
      color: #334155;
      line-height: 1.6;
    }

    /* 生产供应保障体系 */
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .assurance-box {
      border: 1px solid var(--dark-border);
      background-color: var(--dark-surface);
      border-radius: var(--radius-md);
      padding: 24px;
    }
    .assurance-box h3 {
      font-size: 17px;
      color: #ffffff;
      margin-bottom: 10px;
    }
    .assurance-box p {
      font-size: 13px;
      color: var(--dark-muted);
      line-height: 1.6;
    }

    /* 订阅与App下载联动条 */
    .subscribe-action-bar {
      background: linear-gradient(90deg, #1e293b 0%, #0f172a 100%);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 44px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }
    .action-text h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .action-text p {
      font-size: 14px;
      color: #94a3b8;
    }
    .action-form-wrap {
      display: flex;
      gap: 10px;
      flex-shrink: 0;
      max-width: 480px;
      width: 100%;
    }
    .form-input {
      flex: 1;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid #334155;
      background-color: #0f172a;
      color: #ffffff;
      font-size: 14px;
    }
    .form-input:focus {
      outline: none;
      border-color: var(--primary);
    }

    /* 全局页脚 */
    .site-footer {
      background-color: var(--dark-bg);
      color: var(--dark-muted);
      padding: 60px 0 30px 0;
      border-top: 1px solid var(--dark-border);
      font-size: 13px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-about h3 {
      color: #ffffff;
      font-size: 16px;
      margin-bottom: 14px;
    }
    .footer-about p {
      line-height: 1.7;
      max-width: 420px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 14px;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-links-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list a:hover {
      color: #ffffff;
    }
    .footer-bottom-bar {
      padding-top: 24px;
      border-top: 1px solid var(--dark-border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .split-layout {
        grid-template-columns: 1fr;
      }
      .topics-matrix {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .portal-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .partner-logo-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .testimonials-grid, .assurance-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 28px;
      }
      .nav-links {
        display: none;
      }
      .subscribe-action-bar {
        flex-direction: column;
        align-items: flex-start;
        padding: 30px 20px;
      }
      .action-form-wrap {
        width: 100%;
        flex-direction: column;
      }
      .hero-metrics-bar {
        grid-template-columns: 1fr;
      }
      .order-feed-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }
      .portal-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
    }