/* roulang page: index */
:root {
      --brand-primary: #e63946;
      --brand-dark: #1d3557;
      --brand-accent: #f4a261;
      --brand-surface: #ffffff;
      --brand-bg-alt: #f8fafc;
      --brand-text: #2b2d42;
      --brand-muted: #6c757d;
      --brand-border: #e9ecef;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 18px 45px rgba(230, 57, 70, 0.12);
      --transition-base: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--brand-text);
      background-color: #ffffff;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-base);
    }
    a:hover {
      color: var(--brand-primary);
    }
    .site-nav {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--brand-border);
      padding: 14px 0;
    }
    .brand-logo {
      font-size: 1.6rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--brand-primary);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .brand-logo:hover {
      color: #c92a37;
    }
    .nav-btn-action {
      background-color: var(--brand-primary);
      color: #fff;
      border-radius: 999px;
      padding: 8px 22px;
      font-weight: 600;
      border: 1px solid var(--brand-primary);
      transition: var(--transition-base);
    }
    .nav-btn-action:hover {
      background-color: #c92a37;
      color: #fff;
      box-shadow: var(--shadow-sm);
    }
    .creator-hero {
      position: relative;
      background: url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
      padding: 70px 0 60px;
      color: #ffffff;
      overflow: hidden;
    }
    .creator-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(29, 53, 87, 0.92) 0%, rgba(230, 57, 70, 0.85) 100%);
      z-index: 1;
    }
    .creator-hero-content {
      position: relative;
      z-index: 2;
    }
    .creator-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, 0.18);
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 0.88rem;
      font-weight: 500;
      margin-bottom: 20px;
    }
    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-subtitle {
      font-size: 1.12rem;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.9);
      margin-bottom: 30px;
    }
    .creator-bar {
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: var(--radius-md);
      padding: 16px 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-top: 30px;
    }
    .creator-profile {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .creator-avatar {
      width: 54px;
      height: 54px;
      border-radius: 50%;
      border: 2px solid #ffffff;
      object-fit: cover;
    }
    .creator-stat-pill {
      background: rgba(0, 0, 0, 0.2);
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.82rem;
    }
    .action-btn-light {
      background: #ffffff;
      color: var(--brand-dark);
      font-weight: 600;
      padding: 10px 24px;
      border-radius: 999px;
      border: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .action-btn-light:hover {
      background: #f1faee;
      color: var(--brand-primary);
      transform: translateY(-2px);
    }
    .action-btn-outline {
      background: transparent;
      color: #ffffff;
      border: 1px solid #ffffff;
      font-weight: 600;
      padding: 10px 24px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .action-btn-outline:hover {
      background: rgba(255, 255, 255, 0.15);
      color: #ffffff;
    }
    .app-section {
      padding: 80px 0;
    }
    .app-section-alt {
      background-color: var(--brand-bg-alt);
    }
    .section-title-wrap {
      margin-bottom: 45px;
    }
    .section-tag {
      font-size: 0.85rem;
      text-transform: uppercase;
      font-weight: 700;
      color: var(--brand-primary);
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: inline-block;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--brand-dark);
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--brand-muted);
      line-height: 1.7;
    }
    .feature-card {
      background: #ffffff;
      border: 1px solid var(--brand-border);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      height: 100%;
      transition: var(--transition-base);
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(230, 57, 70, 0.3);
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: #fef2f2;
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 20px;
    }
    .scene-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--brand-border);
      background: #ffffff;
      transition: var(--transition-base);
    }
    .scene-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .scene-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .scene-card:hover img {
      transform: scale(1.04);
    }
    .scene-card-body {
      padding: 22px;
    }
    .step-box {
      position: relative;
      background: #ffffff;
      border: 1px solid var(--brand-border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      height: 100%;
    }
    .step-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--brand-primary);
      line-height: 1;
      margin-bottom: 14px;
      opacity: 0.9;
    }
    .demo-stage {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--brand-border);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .demo-nav-tabs {
      background: var(--brand-bg-alt);
      border-bottom: 1px solid var(--brand-border);
      padding: 12px 24px;
      display: flex;
      gap: 12px;
    }
    .demo-nav-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: #e2e8f0;
    }
    .demo-nav-dot.red { background: #ff5f56; }
    .demo-nav-dot.yellow { background: #ffbd2e; }
    .demo-nav-dot.green { background: #27c93f; }
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--brand-border);
      border-radius: var(--radius-md);
      padding: 28px;
      height: 100%;
      box-shadow: var(--shadow-sm);
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 20px;
    }
    .testimonial-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      object-fit: cover;
    }
    .pricing-card {
      background: #ffffff;
      border: 1px solid var(--brand-border);
      border-radius: var(--radius-md);
      padding: 34px 28px;
      height: 100%;
      position: relative;
      transition: var(--transition-base);
    }
    .pricing-card.popular {
      border: 2px solid var(--brand-primary);
      box-shadow: var(--shadow-md);
    }
    .pricing-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--brand-primary);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
    }
    .pricing-price {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--brand-dark);
      margin: 18px 0;
    }
    .pricing-price small {
      font-size: 1rem;
      font-weight: 400;
      color: var(--brand-muted);
    }
    .news-card {
      border: 1px solid var(--brand-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #ffffff;
      height: 100%;
      transition: var(--transition-base);
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .news-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .news-body {
      padding: 20px;
    }
    .download-cta-box {
      background: linear-gradient(135deg, var(--brand-dark) 0%, #2b2d42 100%);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      color: #ffffff;
      box-shadow: var(--shadow-lg);
    }
    .download-btn {
      background: #ffffff;
      color: var(--brand-dark);
      border-radius: 12px;
      padding: 12px 24px;
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 600;
      transition: var(--transition-base);
      border: 1px solid #ffffff;
    }
    .download-btn:hover {
      background: #f1faee;
      color: var(--brand-primary);
      transform: translateY(-2px);
    }
    .matrix-btn-item {
      display: flex;
      align-items: center;
      gap: 10px;
      background: #ffffff;
      border: 1px solid var(--brand-border);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      font-weight: 600;
      color: var(--brand-dark);
      transition: var(--transition-base);
    }
    .matrix-btn-item:hover {
      border-color: var(--brand-primary);
      color: var(--brand-primary);
      box-shadow: var(--shadow-sm);
    }
    .topic-tag {
      background: var(--brand-bg-alt);
      border: 1px solid var(--brand-border);
      color: var(--brand-text);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 0.88rem;
      display: inline-block;
      margin: 4px;
      transition: var(--transition-base);
    }
    .topic-tag:hover {
      background: #fef2f2;
      border-color: var(--brand-primary);
      color: var(--brand-primary);
    }
    .site-footer {
      background-color: #111827;
      color: #9ca3af;
      padding: 60px 0 30px;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-title {
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-link {
      color: #9ca3af;
      margin-bottom: 10px;
      display: block;
    }
    .footer-link:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 40px;
      padding-top: 25px;
      text-align: center;
      font-size: 0.85rem;
    }
    @media (max-width: 991px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .app-section {
        padding: 60px 0;
      }
    }
    @media (max-width: 576px) {
      .hero-title {
        font-size: 1.85rem;
      }
      .creator-bar {
        flex-direction: column;
        align-items: flex-start;
      }
    }