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

    body {
      font-family: 'Segoe UI', sans-serif;
      background: linear-gradient(to bottom right, #000, #1a1a1a);
      color: #ffffff;
      min-height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 20px;
    }

    .card {
      background: #111;
      border-radius: 18px;
      padding: 40px 25px;
      max-width: 460px;
      width: 100%;
      text-align: center;
      box-shadow: 0 12px 40px rgba(255, 0, 0, 0.25);
      border: 1px solid #333;
    }

    .logo {
      width: 130px;
      border-radius: 16px;
      margin-bottom: 20px;
      border: 3px solid #ff4d4d;
      animation: pulse 2s infinite;
      box-shadow: 0 0 18px rgba(255, 0, 0, 0.75);
    }

    @keyframes pulse {
      0% { transform: scale(1); box-shadow: 0 0 18px rgba(255, 0, 0, 0.5); }
      50% { transform: scale(1.07); box-shadow: 0 0 30px rgba(255, 0, 0, 1); }
      100% { transform: scale(1); box-shadow: 0 0 18px rgba(255, 0, 0, 0.5); }
    }

    .headline {
      font-family: 'Russo One', sans-serif;
      font-size: 32px;
      font-weight: 900;
      color: #ffffff;
      margin-bottom: 20px;
      text-shadow: 0 0 6px rgba(255, 0, 0, 0.6);
    }

    .subtext {
      font-size: 16px;
      color: #ffffff;
      margin-bottom: 28px;
      line-height: 1.5;
    }

    .btn-download {
      display: inline-block;
      background: linear-gradient(to right, #00ff90, #00c853);
      color: #ffffff;
      padding: 14px 40px;
      font-size: 18px;
      font-weight: 700;
      border-radius: 50px;
      text-decoration: none;
      box-shadow: 0 0 20px rgba(0, 255, 120, 0.6);
      transition: all 0.3s ease;
      margin-bottom: 30px;
      border: 2px solid #00e676;
    }

    .btn-download:hover {
      transform: scale(1.07);
      box-shadow: 0 0 30px rgba(0, 255, 120, 0.9);
    }

    .features {
      text-align: left;
      font-size: 16px;
      color: #ffffff;
      padding: 0 10px;
      margin-bottom: 20px;
    }

    .features li {
      margin: 10px 0;
      list-style: none;
      display: flex;
      align-items: center;
    }

    .features li::before {
      content: "✓";
      color: #00ff90;
      margin-right: 10px;
      font-weight: bold;
    }

    .footer {
      margin-top: 25px;
      font-size: 16px;
      color: #ffffff;
      background-color: #1e1e1e;
      padding: 12px 18px;
      border-radius: 12px;
      line-height: 1.6;
    }

    .heart {
      color: red;
    }  
    @media (max-width: 480px) {
      .headline {
        font-size: 24px;
      }

      .btn-download {
        width: 100%;
        padding: 14px 0;
      }

      .features {
        font-size: 15px;
      }
    }