/* roulang page: index */
:root {
      --primary: #0F172A;
      --primary-light: #1E293B;
      --accent: #10B981;
      --accent-hover: #059669;
      --secondary: #3B82F6;
      --bg-main: #FAFAFA;
      --bg-card: #FFFFFF;
      --bg-dark: #090D16;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 10px 15px -5px rgba(0,0,0,0.03);
      --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.08);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-pill: 9999px;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

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

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航系统 */
    .top-bar {
      height: 36px;
      background-color: #0B0F19;
      color: var(--text-light);
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 100%;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #E2E8F0;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
      100% { opacity: 1; transform: scale(1); }
    }

    .header-nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .main-nav-inner {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 10px;
      letter-spacing: -0.02em;
    }
    .brand-logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: 900;
      font-size: 16px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--secondary);
    }
    .btn-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background-color: var(--accent);
      color: #FFFFFF;
      font-weight: 600;
      font-size: 14px;
      border-radius: var(--radius-pill);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-cta:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
      transform: translateY(-1px);
    }
    .btn-outline {
      background-color: transparent;
      color: var(--primary);
      border: 1px solid var(--border-color);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      background-color: rgba(15, 23, 42, 0.04);
    }

    /* 通用板块规范 */
    section {
      padding: 96px 0;
    }
    .section-header {
      margin-bottom: 56px;
    }
    .section-header.center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--secondary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 12px;
      background: rgba(59, 130, 246, 0.08);
      padding: 4px 12px;
      border-radius: var(--radius-pill);
    }
    .section-title {
      font-size: 34px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.3;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero 蓝图：白皮书资料获客模式 */
    .hero-section {
      padding: 80px 0 96px 0;
      background: radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.06) 0%, rgba(16, 185, 129, 0.04) 50%, var(--bg-main) 100%);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 46px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      letter-spacing: -0.03em;
      margin-bottom: 24px;
    }
    .hero-summary {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-kpis {
      display: flex;
      gap: 32px;
      margin-top: 36px;
      padding-top: 32px;
      border-top: 1px solid var(--border-color);
    }
    .kpi-item h3 {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 6px;
    }
    .kpi-item h3 span {
      font-size: 18px;
      color: var(--accent);
    }
    .kpi-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .report-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .report-badge {
      position: absolute;
      top: 16px;
      right: 16px;
      background: #ECFDF5;
      color: var(--accent);
      font-size: 12px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: var(--radius-pill);
    }
    .report-meta {
      display: flex;
      gap: 16px;
      align-items: center;
      margin-bottom: 20px;
    }
    .report-thumb {
      width: 72px;
      height: 96px;
      border-radius: 4px;
      object-fit: cover;
      box-shadow: var(--shadow-sm);
    }
    .report-info h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .report-info p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .report-toc {
      list-style: none;
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      padding: 16px;
      margin-bottom: 20px;
      font-size: 13px;
      color: var(--text-main);
    }
    .report-toc li {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 8px;
    }
    .report-toc li:last-child {
      margin-bottom: 0;
    }
    .report-toc span.dot {
      width: 6px;
      height: 6px;
      background: var(--secondary);
      border-radius: 50%;
    }
    .lead-form-mini input {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      margin-bottom: 12px;
      outline: none;
      transition: var(--transition);
    }
    .lead-form-mini input:focus {
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    }

    /* 2. 痛点透视区 */
    .pain-section {
      background-color: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
    }
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pain-card {
      padding: 32px;
      border-radius: var(--radius-md);
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
      border-color: #EF4444;
    }
    .pain-tag {
      font-size: 12px;
      font-weight: 700;
      color: #EF4444;
      background: #FEF2F2;
      padding: 4px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 14px;
    }
    .pain-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .pain-card p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. 自主研发架构方案 */
    .arch-section {
      background-color: var(--bg-main);
      border-bottom: 1px solid var(--border-color);
    }
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .arch-img-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .arch-points {
      list-style: none;
      margin-top: 24px;
    }
    .arch-point-item {
      margin-bottom: 20px;
      display: flex;
      gap: 16px;
    }
    .arch-point-item .icon-circle {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(16, 185, 129, 0.1);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
    }
    .arch-point-item h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .arch-point-item p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 4. 核心技术优势（6 宫格） */
    .feature-section {
      background-color: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
    }
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      transition: var(--transition);
    }
    .feature-card:hover {
      border-color: rgba(16, 185, 129, 0.4);
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
    }
    .feature-index {
      font-size: 13px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .feature-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 5. 3大版本矩阵 */
    .edition-section {
      background-color: var(--bg-main);
      border-bottom: 1px solid var(--border-color);
    }
    .edition-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .edition-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .edition-card.popular {
      border-color: var(--accent);
      box-shadow: 0 0 0 1px var(--accent), var(--shadow-sm);
    }
    .badge-pop {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 2px 14px;
      border-radius: var(--radius-pill);
    }
    .edition-card h3 {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .edition-card .edition-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 48px;
    }
    .edition-features {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
      font-size: 14px;
    }
    .edition-features li {
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .edition-features li:last-child {
      border-bottom: none;
    }
    .check-mark {
      color: var(--accent);
      font-weight: bold;
    }

    /* 6. 深色实战案例 */
    .case-section {
      background-color: var(--bg-dark);
      color: #F8FAFC;
      border-bottom: 1px solid var(--border-dark);
    }
    .case-section .section-title {
      color: #F8FAFC;
    }
    .case-section .section-desc {
      color: var(--text-light);
    }
    .case-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .case-spec-box {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 32px;
    }
    .spec-row {
      display: flex;
      justify-content: space-between;
      padding: 14px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 15px;
    }
    .spec-row:last-child {
      border-bottom: none;
    }
    .spec-row span.label {
      color: var(--text-light);
    }
    .spec-row span.val {
      color: var(--accent);
      font-weight: 700;
    }

    /* 7. 四步落地流程 */
    .step-section {
      background-color: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
    }
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .step-card {
      position: relative;
      padding: 28px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: var(--bg-main);
    }
    .step-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 12px;
      opacity: 0.8;
    }
    .step-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .step-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 成果数据条 */
    .metric-strip-section {
      background-color: #0F172A;
      color: #FFFFFF;
      padding: 64px 0;
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item .num {
      font-size: 42px;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 10px;
    }
    .metric-item p {
      font-size: 15px;
      color: var(--text-light);
    }

    /* 9. 客户评价与见证 */
    .quote-section {
      background-color: var(--bg-main);
      border-bottom: 1px solid var(--border-color);
    }
    .quote-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .quote-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
    }
    .quote-body {
      font-size: 15px;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: italic;
    }
    .quote-author h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
    }
    .quote-author p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 10. 多角色适配 */
    .persona-section {
      background-color: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
    }
    .persona-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .persona-card {
      padding: 24px;
      border-radius: var(--radius-md);
      background: #F8FAFC;
      border: 1px solid var(--border-color);
    }
    .persona-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--secondary);
      background: rgba(59, 130, 246, 0.1);
      padding: 4px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
    }
    .persona-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .persona-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 11. 行业动态与资讯 */
    .news-section {
      background-color: var(--bg-main);
      border-bottom: 1px solid var(--border-color);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 180px;
      width: 100%;
      object-fit: cover;
    }
    .news-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-content h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 16px;
    }

    /* 12. FAQ 手风琴 */
    .faq-section {
      background-color: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
    }
    .faq-container {
      max-width: 840px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      background: var(--bg-main);
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 17px;
      font-weight: 600;
      color: var(--primary);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-icon {
      font-size: 18px;
      transition: var(--transition);
      color: var(--text-muted);
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      color: var(--accent);
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px 24px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 13. 底部全局转化区（单行动转化收口） */
    .cta-section {
      background: radial-gradient(circle at 50% 50%, #1E293B 0%, #0F172A 100%);
      color: #FFFFFF;
      padding: 96px 0;
      position: relative;
    }
    .cta-card {
      max-width: 860px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(16, 185, 129, 0.3);
      border-radius: var(--radius-md);
      padding: 48px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }
    .cta-header {
      text-align: center;
      margin-bottom: 36px;
    }
    .cta-header h2 {
      font-size: 34px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 12px;
      letter-spacing: -0.02em;
    }
    .cta-header p {
      font-size: 16px;
      color: var(--text-light);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-bottom: 18px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 13px;
      color: var(--text-light);
    }
    .form-control {
      height: 46px;
      padding: 0 14px;
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--accent);
      background: rgba(255, 255, 255, 0.1);
    }
    select.form-control option {
      background-color: var(--primary);
      color: #FFFFFF;
    }
    .btn-submit {
      width: 100%;
      height: 50px;
      background-color: var(--accent);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      margin-top: 10px;
    }
    .btn-submit:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
    }

    /* 页脚设计 */
    .site-footer {
      background-color: #0B0F19;
      color: var(--text-light);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 72px 0 28px 0;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 56px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
      letter-spacing: 0.03em;
    }
    .footer-brand {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-desc {
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .contact-item {
      margin-bottom: 12px;
      line-height: 1.6;
    }
    .footer-bottom {
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      text-align: center;
      font-size: 13px;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: var(--accent);
    }

    /* 移动端菜单抽屉 */
    .mobile-menu-btn {
      display: none;
      flex-direction: column;
      justify-content: space-around;
      width: 26px;
      height: 20px;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 0;
    }
    .mobile-menu-btn span {
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
      transition: var(--transition);
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-grid, .case-layout {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .pain-grid, .feature-grid, .edition-grid, .quote-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid, .persona-grid, .metric-grid, .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .mobile-menu-btn {
        display: flex;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-link {
        width: 100%;
        min-height: 44px;
        display: flex;
        align-items: center;
      }
    }

    @media (max-width: 640px) {
      section {
        padding: 64px 0;
      }
      .hero-h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .pain-grid, .feature-grid, .edition-grid, .quote-grid, .news-grid,
      .step-grid, .persona-grid, .metric-grid, .footer-grid, .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .cta-card {
        padding: 28px 18px;
      }
      .hero-kpis {
        flex-direction: column;
        gap: 16px;
      }
      .top-bar {
        display: none;
      }
    }