/* roulang page: index */
:root {
      --bg-main: #F4F7F9;
      --bg-white: #FFFFFF;
      --bg-dark: #0D1520;
      --bg-dark-card: #131F2E;
      --primary: #00A896;
      --primary-hover: #028090;
      --secondary: #05668D;
      --accent: #F4A261;
      --accent-strong: #E76F51;
      --text-main: #0B132B;
      --text-body: #3A405A;
      --text-muted: #6C7A89;
      --border-light: rgba(0, 168, 150, 0.15);
      --border-dark: rgba(255, 255, 255, 0.08);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-sm: 0 4px 12px rgba(13, 21, 32, 0.04);
      --shadow-md: 0 10px 25px rgba(13, 21, 32, 0.08);
      --shadow-lg: 0 16px 36px rgba(13, 21, 32, 0.12);
      --container-max: 1200px;
    }

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

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.75;
      letter-spacing: 0.02em;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部服务状态条 */
    .top-bar {
      background-color: #080D14;
      color: #94A3B8;
      font-size: 0.825rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 8px 0;
    }
    .top-bar-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10B981;
    }

    /* 主导航 */
    .site-header {
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: var(--shadow-sm);
      border-bottom: 1px solid #E2E8F0;
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--accent-strong), var(--accent));
      color: #FFF !important;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      box-shadow: 0 4px 14px rgba(231, 111, 81, 0.3);
      border: none;
      cursor: pointer;
    }
    .nav-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(231, 111, 81, 0.4);
    }

    /* 移动端菜单控制 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 8px;
    }

    /* 板块通用基底 */
    .section-wrap {
      padding: 80px 0;
    }
    .section-wrap.alt-bg {
      background-color: #FFFFFF;
    }
    .section-wrap.dark-theme {
      background-color: var(--bg-dark);
      color: #E2E8F0;
    }
    .section-header {
      margin-bottom: 48px;
      max-width: 820px;
    }
    .section-header.center-text {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--primary);
      background-color: rgba(0, 168, 150, 0.1);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-wrap.dark-theme .section-tag {
      background-color: rgba(0, 168, 150, 0.2);
      color: #2DD4BF;
    }
    .section-title {
      font-size: 2.1rem;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 16px;
      font-weight: 700;
    }
    .section-wrap.dark-theme .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .section-wrap.dark-theme .section-desc {
      color: #94A3B8;
    }

    /* 板块 1：促销主视觉 Hero（带角标与限时活动） */
    .hero-banner {
      position: relative;
      background: linear-gradient(135deg, #09131D 0%, #102438 100%), url('/assets/images/90d5d55420409db6.jpg') center/cover no-repeat;
      background-blend-mode: overlay;
      color: #FFFFFF;
      padding: 90px 0 100px;
      overflow: hidden;
    }
    .hero-banner::after {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      background: radial-gradient(circle at 80% 20%, rgba(0, 168, 150, 0.25) 0%, transparent 60%);
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-promo-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(90deg, #E76F51, #F4A261);
      color: #FFFFFF;
      font-weight: 700;
      font-size: 0.85rem;
      padding: 6px 16px;
      border-radius: 30px;
      box-shadow: 0 4px 15px rgba(231, 111, 81, 0.4);
      margin-bottom: 20px;
      animation: pulseGlow 2s infinite;
    }
    @keyframes pulseGlow {
      0% { transform: scale(1); }
      50% { transform: scale(1.02); }
      100% { transform: scale(1); }
    }
    .hero-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 24px;
      color: #FFFFFF;
    }
    .hero-title span {
      background: linear-gradient(90deg, #2DD4BF, #38BDF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-summary {
      font-size: 1.1rem;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 32px;
      max-width: 640px;
    }
    .hero-action-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .btn-primary-hero {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #FFF;
      font-size: 1.05rem;
      font-weight: 700;
      padding: 14px 34px;
      border-radius: var(--radius-md);
      box-shadow: 0 8px 24px rgba(0, 168, 150, 0.4);
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .btn-primary-hero:hover {
      background: linear-gradient(135deg, #029483, #045271);
      transform: translateY(-2px);
    }
    .btn-secondary-hero {
      background: rgba(255, 255, 255, 0.08);
      color: #FFF;
      font-size: 1.05rem;
      font-weight: 600;
      padding: 14px 30px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.2);
      backdrop-filter: blur(8px);
    }
    .btn-secondary-hero:hover {
      background: rgba(255, 255, 255, 0.16);
      border-color: rgba(255, 255, 255, 0.4);
    }
    .hero-stage-card {
      background: var(--bg-dark-card);
      border: 1px solid rgba(0, 168, 150, 0.3);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .stage-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-dark);
      margin-bottom: 16px;
    }
    .stage-metric-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--accent);
    }
    .stage-img-thumb {
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 16px;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    /* 板块 2：多端交互指标看板 */
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -40px;
      position: relative;
      z-index: 10;
    }
    .metric-box {
      background: #FFFFFF;
      padding: 28px 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid #E2E8F0;
      border-top: 4px solid var(--primary);
    }
    .metric-box-num {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .metric-box-num span {
      font-size: 1.1rem;
      color: var(--primary);
      font-weight: 600;
    }
    .metric-box-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-box-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 3：多人捕鱼互动游戏会员系统技术中台介绍 */
    .about-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .about-media-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-light);
    }
    .tech-spec-bar {
      margin-top: 24px;
      background: #EDF5F6;
      border-left: 4px solid var(--primary);
      padding: 16px 20px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }
    .tech-spec-bar p {
      font-size: 0.95rem;
      color: var(--secondary);
      font-weight: 600;
      margin-bottom: 4px;
    }
    .tech-spec-bar span {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 板块 4：核心功能矩阵（6卡片网格） */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background-color: #FFFFFF;
      padding: 32px 28px;
      border-radius: var(--radius-md);
      border: 1px solid #E2E8F0;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary);
    }
    .feature-icon-badge {
      width: 50px;
      height: 50px;
      background: rgba(0, 168, 150, 0.1);
      color: var(--primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }
    .feature-card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .feature-card-desc {
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 板块 5：热门部署方案与产品矩阵（对比定价） */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .pricing-card {
      background: #FFFFFF;
      border: 1px solid #E2E8F0;
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .pricing-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
      transform: scale(1.02);
      background: #FAFDFD;
    }
    .pricing-ribbon {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
    }
    .pricing-tier {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .pricing-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 48px;
    }
    .pricing-spec-list {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .pricing-spec-list li {
      padding: 10px 0;
      font-size: 0.925rem;
      color: var(--text-body);
      border-bottom: 1px dashed #E2E8F0;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pricing-spec-list li::before {
      content: "✔";
      color: var(--primary);
      font-weight: bold;
    }
    .btn-plan {
      display: block;
      text-align: center;
      padding: 12px;
      font-weight: 700;
      border-radius: var(--radius-md);
      background: #E2E8F0;
      color: var(--text-main);
    }
    .pricing-card.featured .btn-plan {
      background: var(--primary);
      color: #FFF;
    }
    .btn-plan:hover {
      opacity: 0.9;
    }

    /* 板块 6：深色模式架构解析与运作理念 */
    .arch-flow-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 36px;
    }
    .arch-node {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      padding: 30px 24px;
      border-radius: var(--radius-md);
      position: relative;
    }
    .arch-node-seq {
      font-size: 0.8rem;
      font-weight: 800;
      color: #38BDF8;
      background: rgba(56, 189, 248, 0.1);
      display: inline-block;
      padding: 2px 10px;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .arch-node h3 {
      font-size: 1.15rem;
      color: #FFF;
      margin-bottom: 10px;
    }
    .arch-node p {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.7;
    }

    /* 板块 7：结果数据前后直观对比区 */
    .compare-table-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid #E2E8F0;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 20px 24px;
      font-size: 0.95rem;
    }
    .compare-table thead th {
      background: #0D1520;
      color: #FFFFFF;
      font-weight: 700;
    }
    .compare-table thead th:nth-child(2) {
      color: #94A3B8;
    }
    .compare-table thead th:nth-child(3) {
      color: #2DD4BF;
      background: #131F2E;
    }
    .compare-table tbody tr {
      border-bottom: 1px solid #E2E8F0;
    }
    .compare-table tbody tr:last-child {
      border-bottom: none;
    }
    .compare-table td:nth-child(3) {
      font-weight: 700;
      color: var(--secondary);
      background-color: #F8FAFC;
    }

    /* 板块 8：系统演进与关键里程碑 */
    .timeline-wrap {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }
    .timeline-wrap::before {
      content: "";
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      top: 0;
      bottom: 0;
      width: 2px;
      background: #CBD5E1;
    }
    .timeline-item {
      display: flex;
      align-items: center;
      margin-bottom: 40px;
      position: relative;
    }
    .timeline-item:nth-child(odd) {
      flex-direction: row-reverse;
    }
    .timeline-content {
      width: 44%;
      background: #FFFFFF;
      padding: 24px 28px;
      border-radius: var(--radius-md);
      border: 1px solid #E2E8F0;
      box-shadow: var(--shadow-sm);
    }
    .timeline-dot {
      width: 18px;
      height: 18px;
      background: var(--primary);
      border-radius: 50%;
      border: 4px solid #FFFFFF;
      box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.4);
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      z-index: 2;
    }
    .timeline-date {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 6px;
    }

    /* 板块 9：行业落地故事与场景方案 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .scenario-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid #E2E8F0;
      box-shadow: var(--shadow-sm);
    }
    .scenario-img {
      height: 200px;
      overflow: hidden;
    }
    .scenario-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .scenario-card:hover .scenario-img img {
      transform: scale(1.05);
    }
    .scenario-body {
      padding: 24px;
    }
    .scenario-body h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .scenario-body p {
      font-size: 0.9rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .scenario-meta {
      font-size: 0.825rem;
      font-weight: 600;
      color: var(--primary);
    }

    /* 板块 10：关键运营数据统计条 */
    .global-stats-bar {
      background: linear-gradient(135deg, #0A141F 0%, #102131 100%);
      color: #FFFFFF;
      padding: 60px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .stats-flex {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      text-align: center;
      gap: 24px;
    }
    .stats-item h4 {
      font-size: 2.6rem;
      font-weight: 800;
      color: #2DD4BF;
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .stats-item h4 span {
      font-size: 1.3rem;
      color: var(--accent);
    }
    .stats-item p {
      font-size: 0.95rem;
      color: #94A3B8;
    }

    /* 板块 11：合作伙伴与运营方评价区 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .review-card {
      background: #FFFFFF;
      padding: 32px 28px;
      border-radius: var(--radius-md);
      border: 1px solid #E2E8F0;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 1rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 14px;
      padding-top: 16px;
      border-top: 1px solid #F1F5F9;
    }
    .reviewer-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--secondary);
      font-size: 1.1rem;
    }
    .reviewer-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块 12：技术动态与运营资讯摘要 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid #E2E8F0;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-card-img {
      height: 180px;
      overflow: hidden;
    }
    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-card-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .news-link:hover {
      color: var(--primary);
    }

    /* 板块 13：高可用性平台安全保障 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .security-badge-item {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      padding: 30px 20px;
      border-radius: var(--radius-md);
      text-align: center;
    }
    .security-icon {
      width: 52px;
      height: 52px;
      margin: 0 auto 16px;
      background: rgba(45, 212, 191, 0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #2DD4BF;
      font-size: 1.4rem;
    }
    .security-badge-item h3 {
      font-size: 1.05rem;
      color: #FFFFFF;
      margin-bottom: 10px;
    }
    .security-badge-item p {
      font-size: 0.825rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块 14：常见问题 FAQ 折叠手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid #E2E8F0;
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 22px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question::after {
      content: "+";
      font-size: 1.5rem;
      line-height: 1;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-question::after {
      content: "-";
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFCFD;
      color: var(--text-body);
      font-size: 0.925rem;
      line-height: 1.8;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 0 24px 22px;
      border-top: 1px dashed #E2E8F0;
    }

    /* 板块 15：意向合作与技术接入表单 */
    .contact-split {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 48px;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 50px;
      box-shadow: var(--shadow-md);
      border: 1px solid #E2E8F0;
    }
    .contact-info-panel h3 {
      font-size: 1.85rem;
      color: var(--text-main);
      margin-bottom: 18px;
    }
    .contact-info-panel p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .direct-contacts {
      list-style: none;
    }
    .direct-contacts li {
      margin-bottom: 16px;
      font-size: 0.95rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .direct-contacts li span {
      width: 32px;
      height: 32px;
      background: rgba(0, 168, 150, 0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
    }
    .contact-form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      font-size: 0.925rem;
      background-color: #FFF;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.15);
    }
    .btn-submit {
      background: linear-gradient(135deg, var(--accent-strong), var(--accent));
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(231, 111, 81, 0.3);
      transition: all 0.25s ease;
    }
    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(231, 111, 81, 0.45);
    }
    .form-feedback {
      display: none;
      padding: 12px 16px;
      background: #ECFDF5;
      color: #065F46;
      border: 1px solid #A7F3D0;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      text-align: center;
    }

    /* 页脚 */
    .site-footer {
      background: #090F17;
      color: #94A3B8;
      padding: 60px 0 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 1.2rem;
      margin-bottom: 14px;
      font-weight: 700;
    }
    .footer-brand p {
      line-height: 1.8;
      margin-bottom: 16px;
      max-width: 320px;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 1rem;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8rem;
    }
    .footer-legal-links {
      display: flex;
      gap: 20px;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .metrics-row {
        grid-template-columns: repeat(2, 1fr);
        margin-top: 20px;
      }
      .about-split {
        grid-template-columns: 1fr;
      }
      .features-grid, .pricing-grid, .arch-flow-grid, .scenarios-grid, .news-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pricing-card.featured {
        transform: none;
      }
      .security-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-flex {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-split {
        grid-template-columns: 1fr;
        padding: 32px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        padding: 24px;
        border-bottom: 1px solid #E2E8F0;
        box-shadow: var(--shadow-md);
        gap: 16px;
      }
      .nav-links.nav-open {
        display: flex;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .features-grid, .pricing-grid, .arch-flow-grid, .scenarios-grid, .news-grid, .reviews-grid, .metrics-row, .stats-flex, .security-grid {
        grid-template-columns: 1fr;
      }
      .timeline-wrap::before {
        left: 20px;
      }
      .timeline-item, .timeline-item:nth-child(odd) {
        flex-direction: row;
        margin-left: 20px;
      }
      .timeline-dot {
        left: 0;
        transform: translateX(-50%);
      }
      .timeline-content {
        width: 100%;
        margin-left: 20px;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

    @media (max-width: 480px) {
      .top-bar {
        display: none;
      }
      .hero-action-group {
        flex-direction: column;
      }
      .hero-action-group a {
        width: 100%;
        text-align: center;
        justify-content: center;
      }
    }