body, html{
    scroll-behavior: smooth;
}
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }
  .content {
    flex: 1;
  }
  .navbar {
    margin-bottom: 20px;
    background-color: transparent;
  }
  .navbar,
  .navbar-toggler {
    border: none;
  }
  .navbar-toggler:focus,
  .navbar-toggler:hover {
    outline: 0;
    background-color: rgba(0, 0, 0, 0.1);
  }
  .navbar-brand img {
    height: 1.25rem;
    margin-right: 8px;
  }
  .container-lg h2 {
    margin-bottom: 20px;
  }
  .testimonial {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 16px;
    margin: 0 0 16px;
    display: flex;
    flex-direction: column;
    position: relative;
    break-inside: avoid;
    align-items: stretch;
  }
  .testimonial p {
    margin: 0;
  }
  .testimonial-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 10px;
  }
  .user-icon {
    border-radius: 50%;
    width: 35px;
    height: 35px;
    margin-right: 15px;
  }
  .username {
    font-weight: 700;
    text-align: left;
    flex-grow: 1;
  }
  .store-icon {
    width: 20px;
    height: 20px;
  }
  .download-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    justify-content: center;
    margin: 0 auto;
    max-width: 800px;
    padding: 0 5%;
  }
  @media (min-width: 360px) {
    .download-buttons {
      grid-template-columns: repeat(3, 1fr);
    }
  }
  .download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #000;
    color: #fff;
    border-radius: 16px;
    padding: 10px;
    text-decoration: none;
    transition: background-color 0.3s, transform 0.3s;
    font-size: 0.9rem;
  }
  .download-btn:hover {
    background-color: #444;
    color: #fff;
    transform: scale(1.05);
  }
  .download-btn img {
    width: 20px;
    height: 20px;
    margin-right: 4px;
  }
  .feature-section {
    margin: 40px 0;
  }
  .testimonial-container {
    column-count: 1;
    column-gap: 16px;
  }
  @media (min-width: 576px) {
    .testimonial-container {
      column-count: 2;
    }
  }
  @media (min-width: 768px) {
    .testimonial-container {
      column-count: 3;
    }
  }
  @media (min-width: 992px) {
    .testimonial-container {
      column-count: 4;
    }
  }
  footer {
    background-color: #f1f1f1;
    text-align: center;
    padding: 16px 0 32px;
    font-size: 0.75rem;
    color: #666;
    line-height: 0.8;
  }
  footer a {
    color: #666;
  }
  .footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
  }
  .footer-content p,
  .footer-content span {
    margin: 0;
  }
  .slogan {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0;
  }
  .slogan p {
    line-height: 1.2;
    padding: 0;
    margin: 0;
  }
  .keyword0 {
    color: #2d3ed4;
    background-image: linear-gradient(120deg, #705bff, #2d3ed4, #0090ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .keyword1 {
    color: #2d3ed4;
    background-image: linear-gradient(60deg, #0090ff, #2d3ed4, #705bff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .screenshot {
    border: #e1e6ef 5px solid;
    border-radius: 16px;
    margin: 0 auto 30px;
    max-height: 400px;
    height: 400px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.1);
  }
  .symbol {
    width: 1.6rem;
    height: 1.6rem;
    margin-right: 12px;
  }