html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: 'Noto Sans KR', sans-serif;
  }

  body {
    background: url('img/black-background.jpg') repeat;
    background-color: #000;
    color: white;
  }

  .hero {
    position: relative;
    background: url('img/bg-tv.jpg') no-repeat top center, url('img/black-background.jpg') repeat;
    background-size: 100% auto, auto;
    background-blend-mode: normal;
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
  }

  .hero::after {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    padding: 0 20px;
  }

  .main-title {
    font-size: 4rem;
    font-weight: bold;
    color: #244cff;
    display: flex;
    align-items: center;
    justify-content: center; 
    gap: 15px; 
  }
  
  .main-title .logo {
    height: 60px; 
    vertical-align: middle;
  }

  .sub-title {
    font-size: 1.5rem;
    margin-top: 10px;
    border-bottom: 2px solid #aaa;
    display: inline-block;
    padding-bottom: 10px;
  }

  .container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    text-align: center;
  }

  .card {
    background: #111;
    border: 3px solid #223aa4;
    border-radius: 15px;
    padding: 30px;
    margin-top: 40px;
  }

  .card h2 {
    background: #223aa4;
    margin: -30px -30px 20px -30px;
    padding: 20px;
    font-size: 2rem;
    border-radius: 15px 15px 0 0;
  }

  .domain-name {
    font-size: 2.5rem;
    font-weight: bold;
    color: white;
  }

  .domain-desc {
    color: #ccc;
    margin-top: 15px;
    font-size: 1.2rem;
    line-height: 1.6;
  }

  .link-box {
    background: #333;
    border-radius: 50px;
    padding: 15px 30px;
    margin: 10px auto;
    max-width: 300px;
    font-size: 1.5rem;
  }

  .link-box a {
    color: #fff;
    text-decoration: none;
    display: block;
  }

  .link-box a:visited {
    color: #fff;
  }

  .link-box a:hover {
    text-decoration: none;
    color: #ff6666;
  }

  .telegram-box {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1e1e1e;
    padding: 20px 30px;
    border-radius: 15px;
    margin-top: 20px;
    cursor: pointer;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }
  

  .telegram-box:hover {
    background: #292929;
  }

  .telegram-box img {
    width: 60px;
    height: 60px;
    margin-right: 25px;
    flex-shrink: 0;
  }

  .telegram-info {
    text-align: center;
    width: 100%;
  }

  .telegram-info strong {
    font-size: 1.5rem;
    color: #5fb4ff;
    display: block;
    margin-bottom: 8px;
  }

  .telegram-info p {
    font-size: 1rem;
    color: #ccc;
    margin: 0;
  }

  @media (max-width: 768px) {
    .main-title {
      font-size: 2rem;
    }

    .sub-title {
      font-size: 1.1rem;
    }

    .card h2 {
      font-size: 1.5rem;
      padding: 15px;
    }

    .domain-name {
      font-size: 2rem;
    }

    .domain-desc {
      font-size: 1rem;
    }

    .link-box {
      font-size: 1.2rem;
      padding: 12px 20px;
    }

    .telegram-box {
      flex-direction: column;
      text-align: center;
    }

    .telegram-box img {
      margin: 0 0 10px 0;
    }

    .telegram-info strong {
      font-size: 1.3rem;
    }

    .telegram-info p {
      font-size: 0.9rem;
    }
  }