/* roulang page: index */
:root {
      --primary: #0B5C43;
      --primary-dark: #073B2B;
      --primary-light: #128260;
      --accent: #CCFF00;
      --accent-hover: #b5e600;
      --dark: #111614;
      --dark-surface: #18201C;
      --gray-bg: #F7F9F8;
      --gray-card: #FFFFFF;
      --gray-border: #E2E8E5;
      --text-main: #1C2421;
      --text-muted: #596560;
      --text-light: #F7F9F8;
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      --shadow-sm: 0 2px 8px rgba(11, 92, 67, 0.04);
      --shadow-md: 0 6px 24px -4px rgba(11, 92, 67, 0.08);
      --shadow-lg: 0 16px 36px -6px rgba(11, 92, 67, 0.14);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.28s ease-in-out;
    }

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

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

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--gray-bg);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
      outline: none;
    }

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

    /* 顶部通栏导航 */
    header.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(--gray-border);
      box-shadow: var(--shadow-sm);
    }

    .header-top {
      background: var(--dark);
      color: #9AA7A1;
      font-size: 0.775rem;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .header-top .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .header-top-tags {
      display: flex;
      gap: 16px;
    }

    .header-main {
      padding: 14px 0;
    }
    .header-main .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo-badge {
      background: var(--primary);
      color: var(--accent);
      width: 34px;
      height: 34px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: 900;
      font-size: 1rem;
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .site-nav a {
      font-weight: 500;
      color: var(--text-main);
      font-size: 0.95rem;
      position: relative;
    }
    .site-nav a:hover {
      color: var(--primary);
    }
    .site-nav a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    .site-nav a:hover::after {
      width: 100%;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      font-size: 0.95rem;
      text-align: center;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(11, 92, 67, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(11, 92, 67, 0.35);
    }
    .btn-accent {
      background-color: var(--accent);
      color: var(--dark);
      box-shadow: 0 4px 14px rgba(204, 255, 0, 0.3);
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
    }
    .btn-outline {
      border-color: rgba(255,255,255,0.4);
      color: #FFFFFF;
      background: transparent;
    }
    .btn-outline:hover {
      background: rgba(255,255,255,0.1);
      border-color: #FFFFFF;
      transform: translateY(-2px);
    }
    .btn-outline-dark {
      border-color: var(--gray-border);
      color: var(--text-main);
      background: #FFFFFF;
    }
    .btn-outline-dark:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #F0F6F3;
    }

    /* 通用板块样式 */
    section {
      padding: 84px 0;
      position: relative;
    }
    .section-header {
      max-width: 780px;
      margin: 0 auto 52px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      background: rgba(11, 92, 67, 0.08);
      color: var(--primary);
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--dark);
      line-height: 1.3;
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero 板块 */
    #hero {
      padding: 120px 0 110px;
      background: linear-gradient(135deg, rgba(7, 43, 31, 0.94) 0%, rgba(17, 22, 20, 0.96) 100%),
                  url('/assets/images/a79c0fda4f7c2b11.webp') center/cover no-repeat;
      color: #FFFFFF;
      position: relative;
    }
    .hero-content {
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-pretitle {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(204, 255, 0, 0.12);
      border: 1px solid rgba(204, 255, 0, 0.35);
      color: var(--accent);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.875rem;
      font-weight: 700;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -1px;
      margin-bottom: 24px;
    }
    .hero-lead {
      font-size: 1.15rem;
      color: #CFDBD5;
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .hero-trust-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      padding-top: 36px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }
    .trust-item h4 {
      font-size: 1.75rem;
      color: var(--accent);
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 4px;
    }
    .trust-item p {
      font-size: 0.825rem;
      color: #A3B3AC;
    }

    /* 2. 架构与产品介绍 */
    #about {
      background: #FFFFFF;
    }
    .split-layout {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .tech-stack-visual {
      background: var(--dark);
      border-radius: var(--radius-lg);
      padding: 32px;
      position: relative;
      border: 1px solid #232E29;
      box-shadow: var(--shadow-lg);
    }
    .tech-stack-visual img {
      border-radius: var(--radius-md);
      margin-bottom: 24px;
      width: 100%;
      height: 260px;
      object-fit: cover;
    }
    .param-box {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(204, 255, 0, 0.2);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .param-label {
      color: #8C9E95;
      font-size: 0.85rem;
    }
    .param-val {
      color: var(--accent);
      font-weight: 700;
      font-size: 1.15rem;
      font-family: monospace;
    }
    .about-article h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--dark);
      line-height: 1.35;
      margin-bottom: 20px;
    }
    .about-article p {
      color: var(--text-muted);
      font-size: 1rem;
      margin-bottom: 20px;
    }
    .feature-check-list {
      list-style: none;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-top: 24px;
    }
    .feature-check-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      font-size: 0.925rem;
      color: var(--dark);
    }
    .feature-check-list li::before {
      content: '✓';
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      background: #E8F5EE;
      color: var(--primary);
      border-radius: 50%;
      font-size: 0.75rem;
      font-weight: 900;
    }

    /* 3. 核心优势 3x2 网格 */
    #advantages {
      background: var(--gray-bg);
    }
    .grid-3x2 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background: var(--gray-card);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .advantage-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(11, 92, 67, 0.3);
    }
    .card-icon {
      width: 54px;
      height: 54px;
      border-radius: var(--radius-sm);
      background: rgba(11, 92, 67, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
    }
    .advantage-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 12px;
    }
    .advantage-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 4. 解决方案 3 大热门卡片 */
    #products {
      background: #FFFFFF;
    }
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-card {
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-lg);
      background: #FFFFFF;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .product-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-6px);
      border-color: rgba(11, 92, 67, 0.4);
    }
    .product-thumb {
      height: 200px;
      width: 100%;
      overflow: hidden;
      background: #111;
    }
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .product-card:hover .product-thumb img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 28px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-body h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 12px;
    }
    .product-body p {
      font-size: 0.925rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .badge-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 24px;
    }
    .badge {
      font-size: 0.775rem;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      background: #EEF4F1;
      color: var(--primary);
      font-weight: 600;
    }
    .badge-highlight {
      background: rgba(204, 255, 0, 0.2);
      color: #0B5C43;
      border: 1px solid rgba(204, 255, 0, 0.5);
    }

    /* 5. 深色案例与大屏区 */
    #dark-cases {
      background: var(--dark);
      color: #FFFFFF;
      padding: 96px 0;
    }
    #dark-cases .section-title {
      color: #FFFFFF;
    }
    #dark-cases .section-desc {
      color: #9AA7A1;
    }
    .dark-showcase {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
      background: var(--dark-surface);
      border: 1px solid #283630;
      border-radius: var(--radius-lg);
      padding: 36px;
    }
    .dark-showcase img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 380px;
      object-fit: cover;
      box-shadow: 0 12px 30px rgba(0,0,0,0.5);
    }
    .dark-info h3 {
      font-size: 1.75rem;
      font-weight: 800;
      margin-bottom: 18px;
      color: var(--text-light);
    }
    .dark-info p {
      color: #A3B3AC;
      font-size: 0.95rem;
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .dark-spec-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 28px;
    }
    .spec-card {
      background: rgba(255,255,255,0.03);
      padding: 14px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent);
    }
    .spec-card h5 {
      font-size: 0.8rem;
      color: #8C9E95;
      margin-bottom: 4px;
    }
    .spec-card span {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
    }

    /* 6. 客户落地故事 */
    #user-stories {
      background: var(--gray-bg);
    }
    .story-card-wrap {
      display: flex;
      flex-direction: column;
      gap: 36px;
    }
    .story-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-lg);
      padding: 36px;
      align-items: center;
    }
    .story-item.reverse {
      grid-template-columns: 1fr 1fr;
      direction: rtl;
    }
    .story-item.reverse .story-text {
      direction: ltr;
    }
    .story-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 280px;
    }
    .story-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-text h3 {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 14px;
    }
    .story-meta {
      font-size: 0.825rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 12px;
      display: block;
    }
    .story-text p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .story-outcome {
      display: inline-block;
      background: #F0F7F4;
      border-left: 4px solid var(--primary);
      padding: 10px 16px;
      font-size: 0.875rem;
      color: var(--dark);
      font-weight: 600;
    }

    /* 7. 工程与运营数据指标 */
    #metrics {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #FFFFFF;
      padding: 64px 0;
    }
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-box h3 {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--accent);
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: monospace;
    }
    .metric-box h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: #FFFFFF;
    }
    .metric-box p {
      font-size: 0.85rem;
      color: #D3E0DA;
    }

    /* 8. 客户反馈评价区 */
    #testimonials {
      background: #FFFFFF;
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .testimonial-card {
      background: var(--gray-bg);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .quote-text {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }
    .quote-text::before {
      content: '“';
      font-size: 3rem;
      line-height: 1;
      color: rgba(11, 92, 67, 0.15);
      position: absolute;
      top: -16px;
      left: -12px;
      font-family: Georgia, serif;
    }
    .client-info {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--gray-border);
      padding-top: 16px;
    }
    .client-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--primary);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }
    .client-details h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark);
    }
    .client-details p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 9. 体育资讯动态区 */
    #news {
      background: var(--gray-bg);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      margin-bottom: 40px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .news-thumb {
      height: 180px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-meta {
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .news-content h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark);
      line-height: 1.45;
      margin-bottom: 12px;
    }
    .news-content p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .news-action {
      text-align: center;
    }

    /* 10. 对比矩阵 */
    #comparison {
      background: #FFFFFF;
    }
    .compare-table-wrap {
      overflow-x: auto;
      background: #FFFFFF;
      border:1px solid var(--gray-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .compare-table th, .compare-table td {
      padding: 20px 24px;
      border-bottom: 1px solid var(--gray-border);
    }
    .compare-table th {
      background: #F4F7F5;
      color: var(--dark);
      font-weight: 700;
      font-size: 1rem;
    }
    .compare-table th.highlight-col {
      background: #E8F2ED;
      color: var(--primary);
      font-size: 1.05rem;
      border-left: 2px solid var(--primary);
      border-right: 2px solid var(--primary);
    }
    .compare-table td.highlight-col {
      background: #F8FCFA;
      color: var(--dark);
      font-weight: 600;
      border-left: 2px solid var(--primary);
      border-right: 2px solid var(--primary);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .badge-check {
      color: var(--primary);
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .badge-cross {
      color: #9CA7A2;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 11. FAQ 手风琴 */
    #faq {
      background: var(--gray-bg);
    }
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item[open] {
      border-color: rgba(11, 92, 67, 0.4);
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 22px 28px;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--dark);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-icon-arrow {
      width: 20px;
      height: 20px;
      transition: transform 0.25s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
    }
    .faq-item[open] .faq-icon-arrow {
      transform: rotate(180deg);
    }
    .faq-content {
      padding: 0 28px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
    }

    /* 12. 交付保障条 */
    #guarantee {
      background: #FFFFFF;
      border-top: 1px solid var(--gray-border);
      border-bottom: 1px solid var(--gray-border);
      padding: 56px 0;
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-box {
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }
    .guarantee-symbol {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: #E8F5EE;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.25rem;
      flex-shrink: 0;
    }
    .guarantee-body h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 4px;
    }
    .guarantee-body p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 13. 底部收口行动区与表单 */
    #bottom-cta {
      background: linear-gradient(135deg, rgba(7, 43, 31, 0.97) 0%, rgba(17, 22, 20, 0.98) 100%),
                  url('/assets/images/3db3616565582fa4.webp') center/cover no-repeat;
      color: #FFFFFF;
      padding: 96px 0;
    }
    #bottom-cta .section-title {
      color: #FFFFFF;
    }
    #bottom-cta .section-desc {
      color: #A3B3AC;
    }
    .cta-form-card {
      max-width: 820px;
      margin: 0 auto;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 44px;
      color: var(--dark);
      box-shadow: var(--shadow-lg);
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 24px;
    }
    .form-group-full {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--dark);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      transition: var(--transition);
      background: #FAFCFB;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(11, 92, 67, 0.12);
    }
    .form-btn-wrap {
      text-align: center;
    }
    .form-notice {
      text-align: center;
      font-size: 0.8rem;
      color: #7A8983;
      margin-top: 14px;
    }

    /* 底部固定转化条 */
    .sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(17, 22, 20, 0.96);
      backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255,255,255,0.12);
      padding: 12px 0;
      z-index: 999;
      box-shadow: 0 -4px 20px rgba(0,0,0,0.25);
    }
    .sticky-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
    }
    .sticky-bar-text h5 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
    }
    .sticky-bar-text p {
      color: #A3B3AC;
      font-size: 0.825rem;
    }
    .sticky-bar-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    /* 页脚 */
    footer.site-footer {
      background: #0B0E0D;
      color: #8D9B95;
      padding: 72px 0 36px;
      font-size: 0.875rem;
      border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 56px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
      letter-spacing: -0.3px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-contact-item {
      margin-bottom: 12px;
      display: flex;
      gap: 8px;
    }
    .footer-contact-item span {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8rem;
    }
    .footer-bottom a:hover {
      color: #FFFFFF;
    }

    /* 移动端菜单抽屉与断点 */
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
      flex-direction: column;
      gap: 5px;
    }
    .nav-toggle span {
      width: 24px;
      height: 2px;
      background: var(--dark);
      transition: var(--transition);
    }

    @media (max-width: 1024px) {
      .grid-3x2, .product-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .dark-showcase {
        grid-template-columns: 1fr;
      }
      .dark-showcase img {
        height: 300px;
      }
      .hero-trust-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .header-top {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        gap: 16px;
      }
      .site-nav.open {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .hero-title {
        font-size: 2.15rem;
      }
      .split-layout, .story-item, .story-item.reverse {
        grid-template-columns: 1fr;
        direction: ltr !important;
        gap: 32px;
      }
      .grid-3x2, .product-grid, .testimonials-grid, .news-grid, .metrics-bar, .guarantee-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .cta-form-card {
        padding: 24px 18px;
      }
      .sticky-bar-text {
        display: none;
      }
      .sticky-bar-actions {
        width: 100%;
        justify-content: space-between;
      }
      .sticky-bar-actions .btn {
        flex: 1;
      }
    }