/* roulang page: index */
:root {
      --primary-dark: #0F5132;
      --primary: #10B981;
      --primary-hover: #059669;
      --accent-orange: #F97316;
      --accent-orange-hover: #EA580C;
      --bg-dark: #0B1315;
      --bg-dark-card: #142125;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-dark: #1E2E33;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
      --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.08);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --container-max: 1200px;
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-family);
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

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

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

    input, select, textarea, button {
      font-family: inherit;
      font-size: 1rem;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      padding: 0.85rem 1.75rem;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      min-height: 44px;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
    }

    .btn-accent {
      background-color: var(--accent-orange);
      color: #FFFFFF;
    }
    .btn-accent:hover {
      background-color: var(--accent-orange-hover);
      box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
    }

    .btn-outline {
      background-color: transparent;
      color: #FFFFFF;
      border-color: rgba(255, 255, 255, 0.4);
    }
    .btn-outline:hover {
      background-color: rgba(255, 255, 255, 0.1);
      border-color: #FFFFFF;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 3.5rem auto;
    }
    .section-badge {
      display: inline-block;
      padding: 0.3rem 0.85rem;
      background-color: rgba(16, 185, 129, 0.12);
      color: var(--primary-dark);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: 9999px;
      margin-bottom: 0.85rem;
      letter-spacing: 0.5px;
    }
    .section-badge-dark {
      background-color: rgba(16, 185, 129, 0.2);
      color: var(--primary);
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 1rem;
    }
    .section-title-dark {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .section-desc-dark {
      color: var(--text-light);
    }

    /* 顶部导航 */
    .top-bar {
      background-color: #0d1618;
      color: var(--text-light);
      font-size: 0.825rem;
      padding: 0.45rem 0;
      border-bottom: 1px solid #1a272a;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-links a {
      color: var(--text-light);
      margin-left: 1.25rem;
    }
    .top-bar-links a:hover {
      color: var(--primary);
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .main-nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--primary-dark);
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      fill: var(--primary);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.5rem;
    }
    .nav-item a {
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-main);
      padding: 0.5rem 0.25rem;
      position: relative;
    }
    .nav-item a:hover {
      color: var(--primary);
    }
    .nav-item a.active {
      color: var(--primary);
    }
    .nav-cta {
      display: flex;
      align-items: center;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 0.5rem;
    }

    /* 板块 1: 首屏 Hero KV */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(11, 19, 21, 0.88) 0%, rgba(15, 81, 50, 0.82) 100%),
                  url('/assets/images/5587a10c5bcb1e02.webp') center/cover no-repeat;
      color: #FFFFFF;
      padding: 5.5rem 0 4.5rem 0;
      overflow: hidden;
    }
    .hero-content {
      max-width: 860px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-tagline {
      display: inline-block;
      padding: 0.4rem 1.1rem;
      background: rgba(16, 185, 129, 0.2);
      border: 1px solid rgba(16, 185, 129, 0.4);
      color: #34D399;
      font-size: 0.9rem;
      font-weight: 700;
      border-radius: 9999px;
      margin-bottom: 1.5rem;
    }
    .hero-title {
      font-size: 3rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 1.5rem;
      letter-spacing: -0.5px;
    }
    .hero-description {
      font-size: 1.15rem;
      line-height: 1.8;
      color: #E2E8F0;
      margin-bottom: 2.25rem;
    }
    .hero-buttons {
      display: flex;
      justify-content: center;
      gap: 1rem;
      flex-wrap: wrap;
      margin-bottom: 3rem;
    }
    .hero-countdown-bar {
      background: rgba(0, 0, 0, 0.45);
      border: 1px solid rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(6px);
      border-radius: var(--radius-md);
      padding: 1rem 1.5rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 1.5rem;
      flex-wrap: wrap;
    }
    .countdown-text {
      font-size: 0.95rem;
      color: #E2E8F0;
    }
    .countdown-digits {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-weight: 700;
    }
    .digit-box {
      background: var(--accent-orange);
      color: #FFFFFF;
      padding: 0.25rem 0.6rem;
      border-radius: var(--radius-sm);
      font-size: 1rem;
    }

    /* 板块 2: 运营痛点 */
    .painpoints-section {
      padding: 5rem 0;
      background-color: var(--bg-white);
    }
    .painpoints-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .painpoint-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem 1.5rem;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .painpoint-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .painpoint-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      color: #DC2626;
      background: #FEE2E2;
      padding: 0.2rem 0.55rem;
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
    }
    .painpoint-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }
    .painpoint-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1rem;
    }
    .painpoint-stat {
      font-size: 0.85rem;
      font-weight: 700;
      color: #B91C1C;
      border-top: 1px dashed var(--border-color);
      padding-top: 0.75rem;
    }

    /* 板块 3: 软硬件体系 */
    .solutions-section {
      padding: 5.5rem 0;
      background-color: var(--bg-light);
    }
    .solutions-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .solutions-media img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      object-fit: cover;
      width: 100%;
      height: 380px;
    }
    .solutions-detail h3 {
      font-size: 1.85rem;
      font-weight: 800;
      margin-bottom: 1.25rem;
      color: var(--text-main);
    }
    .solutions-detail p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
      line-height: 1.75;
    }
    .specs-highlight {
      background: rgba(16, 185, 129, 0.08);
      border-left: 4px solid var(--primary);
      padding: 1rem 1.25rem;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-bottom: 1.5rem;
    }
    .specs-highlight span {
      display: block;
      font-weight: 700;
      color: var(--primary-dark);
      font-size: 0.95rem;
      margin-bottom: 0.35rem;
    }
    .specs-highlight p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }
    .solutions-check-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.75rem;
    }
    .solutions-check-list li {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .solutions-check-list li::before {
      content: "✓";
      color: var(--primary);
      font-weight: 800;
    }

    /* 板块 4: 核心优势六卡片 */
    .features-section {
      padding: 5.5rem 0;
      background-color: var(--bg-white);
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .feature-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.75rem;
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary);
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .feature-card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }
    .feature-card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 5: 热门软硬件一体化产品 */
    .products-section {
      padding: 5.5rem 0;
      background-color: var(--bg-light);
    }
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      align-items: stretch;
    }
    .product-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.25rem 2rem;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .product-card.featured {
      border: 2px solid var(--primary);
      box-shadow: 0 8px 24px rgba(16, 185, 129, 0.15);
    }
    .product-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #FFFFFF;
      font-size: 0.8rem;
      font-weight: 700;
      padding: 0.25rem 0.9rem;
      border-radius: 9999px;
      white-space: nowrap;
    }
    .product-name {
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 0.5rem;
      color: var(--text-main);
    }
    .product-subtitle {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      padding-bottom: 1rem;
      border-bottom: 1px solid var(--border-color);
    }
    .product-specs {
      list-style: none;
      margin-bottom: 2rem;
      flex-grow: 1;
    }
    .product-specs li {
      font-size: 0.925rem;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      display: flex;
      align-items: flex-start;
      gap: 0.5rem;
    }
    .product-specs li::before {
      content: "•";
      color: var(--primary);
      font-weight: 800;
      font-size: 1.1rem;
      line-height: 1;
    }

    /* 板块 6: 深色案例与运营理念 */
    .dark-cases-section {
      padding: 5.5rem 0;
      background-color: var(--bg-dark);
      color: #FFFFFF;
    }
    .dark-cases-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .dark-media-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-dark);
      box-shadow: 0 12px 30px rgba(0,0,0,0.5);
    }
    .dark-media-card img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .dark-ideas {
      display: flex;
      flex-direction: column;
      gap: 1.75rem;
    }
    .idea-item {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      transition: border-color 0.25s ease;
    }
    .idea-item:hover {
      border-color: var(--primary);
    }
    .idea-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }
    .idea-desc {
      font-size: 0.925rem;
      color: var(--text-light);
      line-height: 1.7;
    }

    /* 板块 7: 落地方法与实施步骤 */
    .methodology-section {
      padding: 5.5rem 0;
      background-color: var(--bg-white);
    }
    .timeline-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .timeline-step {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      position: relative;
    }
    .step-number {
      font-size: 2.25rem;
      font-weight: 900;
      color: rgba(16, 185, 129, 0.35);
      line-height: 1;
      margin-bottom: 0.75rem;
    }
    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.65rem;
      color: var(--text-main);
    }
    .step-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 8: 标杆场馆故事深度解析 */
    .stories-section {
      padding: 5.5rem 0;
      background-color: var(--bg-light);
    }
    .stories-list {
      display: flex;
      flex-direction: column;
      gap: 3rem;
    }
    .story-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1fr;
      box-shadow: var(--shadow-sm);
    }
    .story-card.reverse {
      grid-template-columns: 1fr 1fr;
      direction: rtl;
    }
    .story-card.reverse .story-body {
      direction: ltr;
    }
    .story-card.reverse .story-media {
      direction: ltr;
    }
    .story-media img {
      width: 100%;
      height: 100%;
      min-height: 320px;
      object-fit: cover;
    }
    .story-body {
      padding: 2.5rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary-dark);
      background: rgba(16, 185, 129, 0.12);
      padding: 0.25rem 0.75rem;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 0.75rem;
      width: fit-content;
    }
    .story-title {
      font-size: 1.45rem;
      font-weight: 800;
      margin-bottom: 1rem;
      color: var(--text-main);
    }
    .story-detail {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 1.5rem;
    }
    .story-author {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--text-main);
      border-left: 3px solid var(--primary);
      padding-left: 0.75rem;
    }

    /* 板块 9: 关键数据统计条 */
    .metrics-section {
      background: linear-gradient(135deg, var(--primary-dark) 0%, #082d1c 100%);
      color: #FFFFFF;
      padding: 4rem 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-item {
      padding: 1rem;
    }
    .metric-number {
      font-size: 2.85rem;
      font-weight: 900;
      color: #34D399;
      line-height: 1.1;
      margin-bottom: 0.5rem;
      font-variant-numeric: tabular-nums;
    }
    .metric-label {
      font-size: 1.05rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 0.35rem;
    }
    .metric-sub {
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.7);
    }

    /* 板块 10: 馆长评价区 */
    .reviews-section {
      padding: 5.5rem 0;
      background-color: var(--bg-white);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .review-card {
      background: var(--bg-light);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.75rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .review-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .review-stars {
      color: #F59E0B;
      font-size: 1.15rem;
      margin-bottom: 1rem;
      letter-spacing: 2px;
    }
    .review-content {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 1.5rem;
      font-style: normal;
    }
    .review-profile {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1rem;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFFFFF;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      flex-shrink: 0;
    }
    .review-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .review-venue {
      font-size: 0.825rem;
      color: var(--text-muted);
    }

    /* 板块 11: 前沿动态区 */
    .news-section {
      padding: 5.5rem 0;
      background-color: var(--bg-light);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .news-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .news-media img {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }
    .news-body {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 0.75rem;
    }
    .news-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      background: rgba(16, 185, 129, 0.1);
      padding: 0.2rem 0.5rem;
      border-radius: var(--radius-sm);
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.45;
    }
    .news-summary {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }
    .news-link:hover {
      color: var(--primary-hover);
    }

    /* 板块 12: 常见疑问手风琴 */
    .faq-section {
      padding: 5.5rem 0;
      background-color: var(--bg-white);
    }
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      background: #FFFFFF;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }
    .faq-item:hover {
      border-color: var(--primary);
    }
    .faq-toggle {
      position: absolute;
      opacity: 0;
      z-index: -1;
    }
    .faq-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1.25rem 1.5rem;
      cursor: pointer;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-main);
      user-select: none;
    }
    .faq-icon {
      font-size: 1.25rem;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 1.5rem;
      background: var(--bg-light);
    }
    .faq-body p {
      padding: 1.25rem 0;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
    }
    .faq-toggle:checked ~ .faq-body {
      max-height: 300px;
      border-top: 1px solid var(--border-color);
    }
    .faq-toggle:checked ~ .faq-header .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    /* 板块 13: 底部线索表单与转化 */
    .cta-section {
      padding: 5.5rem 0;
      background: linear-gradient(135deg, var(--bg-dark) 0%, #0F3723 100%);
      color: #FFFFFF;
    }
    .cta-card {
      background: rgba(20, 33, 37, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 3.5rem 3rem;
      backdrop-filter: blur(8px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .cta-form {
      max-width: 860px;
      margin: 2rem auto 0 auto;
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 1.25rem;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
      text-align: left;
    }
    .form-group label {
      font-size: 0.85rem;
      font-weight: 600;
      color: #E2E8F0;
    }
    .form-control {
      padding: 0.85rem 1rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.08);
      color: #FFFFFF;
      outline: none;
      transition: border-color 0.2s ease, background 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: rgba(255, 255, 255, 0.15);
    }
    .form-control option {
      background: var(--bg-dark);
      color: #FFFFFF;
    }
    .cta-submit-wrap {
      grid-column: span 3;
      margin-top: 1rem;
      text-align: center;
    }
    .form-notice {
      grid-column: span 3;
      font-size: 0.8rem;
      color: var(--text-light);
      text-align: center;
      margin-top: 0.5rem;
    }

    /* 页脚 */
    .site-footer {
      background-color: #070D0E;
      color: #94A3B8;
      padding: 4.5rem 0 2rem 0;
      font-size: 0.9rem;
      border-top: 1px solid #142125;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1.2fr 1.5fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h4 {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }
    .footer-hotline {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
    }
    .footer-col h5 {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-bottom {
      border-top: 1px solid #142125;
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.825rem;
    }
    .footer-copyright {
      color: #64748B;
    }
    .footer-badges {
      display: flex;
      gap: 1rem;
    }

    /* 移动端与响应式适配 */
    @media (max-width: 1024px) {
      .painpoints-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .features-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .main-nav-container {
        height: 64px;
      }
      .nav-menu {
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        display: none;
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 2.15rem;
      }
      .hero-section {
        padding: 4rem 0 3rem 0;
      }
      .painpoints-grid,
      .features-grid,
      .products-grid,
      .timeline-container,
      .metrics-grid,
      .reviews-grid,
      .news-grid {
        grid-template-columns: 1fr;
      }
      .solutions-wrap,
      .dark-cases-layout,
      .story-card,
      .story-card.reverse {
        grid-template-columns: 1fr;
      }
      .story-body {
        padding: 1.5rem;
      }
      .story-media img {
        min-height: 220px;
      }
      .cta-form {
        grid-template-columns: 1fr;
      }
      .cta-submit-wrap,
      .form-notice {
        grid-column: span 1;
      }
      .cta-card {
        padding: 2rem 1.5rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }