/* roulang page: index */
:root {
      --primary: #0F4C81;
      --primary-dark: #0A3258;
      --primary-light: #1E6CB0;
      --secondary: #0EA5E9;
      --secondary-light: #38BDF8;
      --accent: #06B6D4;
      --bg-main: #FFFFFF;
      --bg-subtle: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-dark: #0B132B;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --text-light: #F1F5F9;
      --border-color: #E2E8F0;
      --border-hover: #CBD5E1;
      --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
      --shadow-xl: 0 12px 24px -4px rgba(15, 76, 129, 0.12), 0 8px 12px -6px rgba(15, 23, 42, 0.06);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      color: var(--text-body);
      background-color: var(--bg-main);
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

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

    @media (max-width: 640px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

    /* 顶部双行导航系统 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      box-shadow: var(--shadow-sm);
      border-bottom: 1px solid var(--border-color);
    }

    .topbar {
      background-color: #0B192C;
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .topbar-wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .topbar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--secondary-light);
      font-weight: 500;
    }

    .topbar-badge::before {
      content: "";
      display: inline-block;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background-color: #10B981;
    }

    .topbar-meta {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .main-nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-weight: 900;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(15, 76, 129, 0.25);
    }

    .brand-logo-text small {
      display: block;
      font-size: 0.72rem;
      font-weight: 600;
      letter-spacing: 1.2px;
      color: var(--text-muted);
    }

    .nav-menu {
      display: flex;
      list-style: none;
      align-items: center;
      gap: 28px;
    }

    .nav-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-body);
      padding: 6px 2px;
      position: relative;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }

    .nav-link::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: var(--transition);
    }

    .nav-link:hover::after {
      width: 100%;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 0.925rem;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(15, 76, 129, 0.25);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(15, 76, 129, 0.35);
    }

    .btn-secondary {
      background-color: #FFFFFF;
      color: var(--primary);
      border-color: #CBD5E1;
    }

    .btn-secondary:hover {
      background-color: #F1F5F9;
      border-color: var(--primary);
      color: var(--primary);
    }

    .btn-accent {
      background: linear-gradient(135deg, var(--secondary), var(--accent));
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      width: 36px;
      height: 36px;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
    }

    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      transition: var(--transition);
    }

    /* 板块通用标准 */
    .section {
      padding-top: 96px;
      padding-bottom: 96px;
      position: relative;
    }

    .section-alt {
      background-color: var(--bg-subtle);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      max-width: 820px;
      margin: 0 auto 56px auto;
      text-align: center;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--primary);
      background-color: #E0F2FE;
      padding: 4px 14px;
      border-radius: 9999px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 模块1：Hero 裂变邀请与强 CTA 首屏 */
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 60%),
                  radial-gradient(circle at 10% 80%, rgba(15, 76, 129, 0.05) 0%, transparent 50%),
                  #FFFFFF;
      padding-top: 60px;
      padding-bottom: 80px;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.2;
      color: var(--text-main);
      letter-spacing: -1px;
      margin-bottom: 20px;
    }

    .hero-h1 span {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro {
      font-size: 1.075rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-badges-row {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }

    .hero-badge-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .hero-badge-item svg {
      width: 18px;
      height: 18px;
      fill: var(--primary);
    }

    .hero-referral-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 32px;
      box-shadow: var(--shadow-xl);
      position: relative;
    }

    .hero-referral-card::before {
      content: "";
      position: absolute;
      top: -1px;
      left: 15%;
      right: 15%;
      height: 3px;
      background: linear-gradient(90deg, transparent, var(--secondary), transparent);
    }

    .ref-header {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      margin-bottom: 14px;
    }

    .ref-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .ref-status {
      font-size: 0.8rem;
      font-weight: 700;
      color: #059669;
      background: #ECFDF5;
      padding: 2px 10px;
      border-radius: 9999px;
    }

    .ref-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }

    .progress-bar-container {
      background-color: #F1F5F9;
      border-radius: 9999px;
      height: 10px;
      width: 100%;
      overflow: hidden;
      margin-bottom: 10px;
    }

    .progress-bar-fill {
      width: 68%;
      height: 100%;
      background: linear-gradient(90deg, var(--secondary), var(--primary));
      border-radius: 9999px;
    }

    .progress-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.825rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .ref-steps {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-bottom: 24px;
    }

    .ref-step {
      background-color: var(--bg-subtle);
      padding: 12px;
      border-radius: var(--radius-sm);
      text-align: center;
      border: 1px dashed var(--border-color);
    }

    .ref-step-num {
      font-weight: 800;
      font-size: 0.85rem;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .ref-step-name {
      font-size: 0.8rem;
      color: var(--text-body);
      font-weight: 600;
    }

    /* 模块2：优惠阶梯与签约权益 */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .tier-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .tier-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-xl);
      border-color: var(--secondary);
    }

    .tier-card.popular {
      border: 2px solid var(--primary);
      background: linear-gradient(180deg, #FFFFFF, #F8FAFC);
    }

    .tier-popular-tag {
      position: absolute;
      top: -13px;
      right: 24px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 9999px;
      letter-spacing: 0.5px;
    }

    .tier-name {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .tier-tagline {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      min-height: 42px;
    }

    .tier-subsidy {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 20px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .tier-subsidy small {
      font-size: 0.85rem;
      font-weight: 500;
      color: var(--text-muted);
    }

    .tier-features {
      list-style: none;
      margin-bottom: 30px;
      flex-grow: 1;
    }

    .tier-features li {
      position: relative;
      padding-left: 24px;
      margin-bottom: 12px;
      font-size: 0.92rem;
      color: var(--text-body);
    }

    .tier-features li::before {
      content: "✓";
      position: absolute;
      left: 0;
      top: 0;
      color: #10B981;
      font-weight: 800;
    }

    /* 模块3：问题陈述（传统链游痛点拆解） */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .pain-card {
      background: #FFFFFF;
      border-left: 4px solid #EF4444;
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      padding: 26px 24px;
      box-shadow: var(--shadow-sm);
      border-top: 1px solid var(--border-color);
      border-right: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .pain-icon {
      font-size: 1.5rem;
      margin-bottom: 12px;
    }

    .pain-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .pain-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 模块4：核心研发架构体系（非对称双栏） */
    .split-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .arch-points {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin-top: 24px;
    }

    .arch-point-item {
      display: flex;
      gap: 16px;
    }

    .arch-num {
      width: 40px;
      height: 40px;
      background-color: #E0F2FE;
      color: var(--primary);
      border-radius: 50%;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .arch-content h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .arch-content p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .split-image-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-xl);
      border: 1px solid var(--border-color);
    }

    .split-image-wrap img {
      width: 100%;
      height: 420px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .split-image-wrap:hover img {
      transform: scale(1.03);
    }

    /* 模块5：六大核心研发优势矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .matrix-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-xl);
      border-color: var(--secondary-light);
    }

    .matrix-icon-box {
      width: 52px;
      height: 52px;
      background: #F0F9FF;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 20px;
      font-size: 1.5rem;
      border: 1px solid #BAE6FD;
    }

    .matrix-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .matrix-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 模块6：三大热门链游产品方案 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .solution-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .solution-card:hover {
      box-shadow: var(--shadow-xl);
      transform: translateY(-4px);
    }

    .solution-img-box {
      position: relative;
      height: 220px;
      overflow: hidden;
    }

    .solution-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .solution-card:hover .solution-img-box img {
      transform: scale(1.05);
    }

    .solution-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.85);
      color: #FFFFFF;
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 600;
      backdrop-filter: blur(4px);
    }

    .solution-body {
      padding: 26px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .solution-body h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .solution-body p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .solution-specs {
      background-color: var(--bg-subtle);
      border-radius: var(--radius-sm);
      padding: 14px;
      margin-top: auto;
      font-size: 0.84rem;
      color: var(--text-body);
      border: 1px solid var(--border-color);
    }

    .solution-specs div {
      display: flex;
      justify-content: space-between;
      margin-bottom: 6px;
    }

    .solution-specs div:last-child {
      margin-bottom: 0;
    }

    /* 模块7：安全合规与智能合约审计标准 */
    .compliance-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .compliance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .compliance-item {
      text-align: center;
      padding: 20px 16px;
      background-color: var(--bg-subtle);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .compliance-item-icon {
      font-size: 2rem;
      margin-bottom: 12px;
      color: var(--primary);
    }

    .compliance-item h4 {
      font-size: 1.05rem;      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .compliance-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 模块8：沉浸式深色区块链案例演示区 */
    .section-dark {
      background-color: var(--bg-dark);
      color: var(--text-light);
      position: relative;
      overflow: hidden;
    }

    .section-dark .section-tag {
      background-color: rgba(14, 165, 233, 0.2);
      color: var(--secondary-light);
    }

    .section-dark .section-title {
      color: #FFFFFF;
    }

    .section-dark .section-desc {
      color: #94A3B8;
    }

    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    .dark-case-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 36px;
      transition: var(--transition);
      backdrop-filter: blur(10px);
    }

    .dark-case-card:hover {
      border-color: var(--secondary);
      box-shadow: 0 0 25px rgba(14, 165, 233, 0.25);
      transform: translateY(-4px);
    }

    .case-header-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
    }

    .case-type {
      font-size: 0.825rem;
      color: var(--secondary-light);
      font-weight: 600;
      text-transform: uppercase;
    }

    .case-chain-pill {
      font-size: 0.75rem;
      background: rgba(255, 255, 255, 0.08);
      color: #E2E8F0;
      padding: 3px 10px;
      border-radius: 9999px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .dark-case-card h3 {
      font-size: 1.45rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
    }

    .dark-case-card p {
      font-size: 0.95rem;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .case-metrics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 20px;
    }

    .case-metric-val {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--secondary-light);
      display: block;
      margin-bottom: 4px;
    }

    .case-metric-label {
      font-size: 0.775rem;
      color: #64748B;
    }

    /* 模块9：交付流程时间线与研发工期 */
    .timeline-wrapper {
      position: relative;
      max-width: 1040px;
      margin: 0 auto;
    }

    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 18px;
      position: relative;
    }

    .timeline-step {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .timeline-step::after {
      content: "→";
      position: absolute;
      right: -14px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 1.1rem;
      color: var(--secondary);
      font-weight: 800;
      z-index: 2;
    }

    .timeline-step:last-child::after {
      display: none;
    }

    .timeline-idx {
      width: 34px;
      height: 34px;
      background: var(--primary);
      color: #FFFFFF;
      font-weight: 800;
      font-size: 0.9rem;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px auto;
    }

    .timeline-step h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .timeline-step p {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 模块10：关键研发数据统计条（Metrics Bar） */
    .metrics-bar-section {
      background: linear-gradient(135deg, var(--primary-dark), var(--primary));
      color: #FFFFFF;
      padding: 64px 0;
    }

    .metrics-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .metric-box {
      border-right: 1px solid rgba(255, 255, 255, 0.15);
      padding: 0 16px;
    }

    .metric-box:last-child {
      border-right: none;
    }

    .metric-num {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.1;
      margin-bottom: 8px;
      color: #FFFFFF;
      letter-spacing: -1px;
    }

    .metric-num span {
      color: var(--secondary-light);
    }

    .metric-label {
      font-size: 0.95rem;
      color: #CBD5E1;
      font-weight: 500;
    }

    /* 模块11：客户真实评价与行业口碑 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 16px;
      letter-spacing: 2px;
    }

    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: normal;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      background: #E2E8F0;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }

    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 模块12：自研架构 vs 传统外包方案对比差异表格 */
    .table-container {
      overflow-x: auto;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .compare-table th, .compare-table td {
      padding: 20px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

    .compare-table th {
      background-color: var(--bg-subtle);
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table th.highlight-col {
      background-color: #E0F2FE;
      color: var(--primary);
      border-top: 3px solid var(--primary);
    }

    .compare-table td.highlight-col {
      background-color: #F0F9FF;
      font-weight: 600;
      color: var(--primary);
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    /* 模块13：前沿研发洞见证据区 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .insight-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .insight-card:hover {
      box-shadow: var(--shadow-xl);
      transform: translateY(-4px);
    }

    .insight-thumb {
      height: 190px;
      overflow: hidden;
    }

    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .insight-card:hover .insight-thumb img {
      transform: scale(1.05);
    }

    .insight-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .insight-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .insight-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.45;
    }

    .insight-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .insight-link {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 模块14：常见问题 FAQ 折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item[open] {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-question::-webkit-details-marker {
      display: none;
    }

    .faq-question::after {
      content: "+";
      font-size: 1.4rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.2s ease;
    }

    .faq-item[open] .faq-question::after {
      content: "−";
    }

    .faq-answer {
      padding: 0 24px 22px 24px;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }

    /* 模块15：交付保障与需求登记收口 */
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 50px;
      padding: 24px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
    }

    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .guarantee-icon {
      font-size: 1.75rem;
      color: #10B981;
    }

    .guarantee-item h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }

    .guarantee-item p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .contact-form-box {
      max-width: 860px;
      margin: 0 auto;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 44px;
      box-shadow: var(--shadow-xl);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full-width {
      grid-column: 1 / -1;
    }

    .form-label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-body);
      outline: none;
      transition: var(--transition);
      background-color: #FAFAFA;
    }

    .form-control:focus {
      border-color: var(--primary);
      background-color: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.1);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 底部常驻浮动转化条 */
    .fixed-action-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 23, 42, 0.96);
      backdrop-filter: blur(8px);
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding: 12px 24px;
      z-index: 998;
      box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.2);
    }

    .fixed-bar-wrap {
      max-width: 1280px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .fixed-bar-info {
      display: flex;
      align-items: center;
      gap: 16px;
      color: #FFFFFF;
    }

    .fixed-bar-title {
      font-weight: 700;
      font-size: 0.95rem;
    }

    .fixed-bar-sub {
      font-size: 0.825rem;
      color: #94A3B8;
    }

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

    /* 统一页脚 Footer */
    .site-footer {
      background-color: #060D1E;
      color: #94A3B8;
      font-size: 0.875rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 64px;
      padding-bottom: 90px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 18px;
      font-size: 0.875rem;
    }

    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col a:hover {
      color: var(--secondary-light);
    }

    .footer-contact-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
      line-height: 1.6;
    }

    .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: 14px;
      font-size: 0.8125rem;
    }

    .footer-bottom a {
      color: #64748B;
    }

    .footer-bottom a:hover {
      color: #E2E8F0;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .split-layout {
        grid-template-columns: 1fr;
      }
      .matrix-grid, .tier-grid, .pain-grid, .solution-grid, .insights-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .compliance-grid, .guarantee-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline-steps {
        grid-template-columns: 1fr;
      }
      .timeline-step::after {
        display: none;
      }
      .metrics-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-box {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .menu-toggle {
        display: flex;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-xl);
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .matrix-grid, .tier-grid, .pain-grid, .solution-grid, .insights-grid, .testimonials-grid, .cases-grid {
        grid-template-columns: 1fr;
      }
      .compliance-grid, .guarantee-bar {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .contact-form-box {
        padding: 24px 18px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .fixed-bar-sub {
        display: none;
      }
    }