body {
    font-family: 'Roboto', sans-serif;
    background-color: #000;
    color: #0f0;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    overflow-x: hidden;
  }
  header {
    background: linear-gradient(to right, #000, #0f0, #000);
    padding: 1rem 0;
    text-align: center;
  }
  header h1 {
    margin: 0;
    font-size: 2.5em;
    color: #000;
    text-shadow: 0 0 10px #0f0, 0 0 20px #0f0, 0 0 30px #0f0;
  }
  header h1 a { color: inherit; text-decoration: none; }
  nav {
    background: #000;
    padding: 0.5rem 0;
  }
  nav ul {
    padding: 0;
    list-style: none;
    text-align: center;
  }
  nav ul li {
    display: inline;
    margin: 0 10px;
  }
  nav ul li a {
    color: #0f0;
    text-decoration: none;
    font-size: 1.2em;
    transition: all 0.3s ease;
  }
  nav ul li a:hover,
  nav ul li a.active {
    color: #fff;
    text-shadow: 0 0 10px #0f0;
  }
  .container {
    width: 80%;
    max-width: 900px;
    margin: auto;
    padding: 20px;
  }
  .section-heading {
    text-align: center;
    color: #fff;
    text-shadow: 0 0 10px #0f0, 0 0 20px #0f0;
    font-size: 2em;
    margin: 0 0 4px 0;
  }
  .subnav {
    list-style: none;
    padding: 0;
    margin: 10px 0 6px 0;
    text-align: center;
  }
  .subnav li {
    display: inline-block;
    margin: 0 4px;
  }
  .subnav a {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid #0f0;
    border-radius: 5px;
    color: #0f0;
    text-decoration: none;
    transition: all 0.3s ease;
  }
  .subnav a:hover,
  .subnav a.active {
    background-color: #0f0;
    color: #000;
  }
  .section-sub {
    text-align: center;
    margin: 0 0 30px 0;
    opacity: 0.8;
  }
  .app-box {
    border: 1px solid #0f0;
    padding: 24px;
    margin-bottom: 30px;
    transition: box-shadow 0.3s ease;
  }
  .app-box:hover {
    box-shadow: 0 0 10px #0f0, 0 0 20px #0f0;
  }
  .app-box h3 {
    margin: 0;
    color: #fff;
    font-size: 1.6em;
  }
  .app-version {
    font-size: 0.9em;
    opacity: 0.75;
  }
  .app-box ul.features {
    margin: 10px 0 20px 0;
    padding-left: 20px;
  }
  .downloads {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
  }
  .dl {
    display: block;
    border: 1px solid #0f0;
    border-radius: 5px;
    padding: 10px 14px;
    color: #0f0;
    text-decoration: none;
    transition: all 0.3s ease;
  }
  .dl:hover {
    background-color: #0f0;
    color: #000;
    box-shadow: 0 0 10px #0f0, 0 0 20px #0f0;
  }
  .dl strong { display: block; font-size: 1.1em; }
  .dl span { font-size: 0.85em; opacity: 0.8; }
  .notes {
    margin-top: 20px;
    font-size: 0.9em;
    opacity: 0.85;
  }
  .notes code {
    background: #001a00;
    border: 1px solid #0f0;
    border-radius: 3px;
    padding: 0 5px;
    color: #fff;
    font-family: 'Courier New', Courier, monospace;
  }
  .notes a { color: #0f0; }
  footer {
    text-align: center;
    padding: 20px;
    opacity: 0.8;
  }
  @media (max-width: 600px) {
    .container { width: auto; padding: 16px; }
    header h1 { font-size: 2em; }
  }
  .section-heading a { color: inherit; text-decoration: none; }
  .app-box h3 a { color: inherit; text-decoration: none; }
  .app-box h3 a:hover { text-shadow: 0 0 10px #0f0; }
  .category-apps {
    list-style: none;
    padding: 0;
    margin: 10px 0 18px 0;
  }
  .category-apps li { margin: 4px 0; }
  .category-apps a { color: #0f0; }
  .platforms { opacity: 0.75; font-size: 0.9em; }
  .cert {
    word-break: break-all;
  }