* {
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
  }
  
  body {
    margin: 0;
    background: #e6e6e6;
  }
  
  /* HEADER */
  .header {
    background: #0b3d2e;
    color: #fff;
    padding: 15px 20px;
  }
  
  .header-container {
    max-width: 1200px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .header a {
    color: #fff;
    text-decoration: none;
    margin-left: 15px;
    font-size: 14px;
  }
  
  /* MAIN */
  .main {
    padding: 30px 15px;
  }
  
  .container {
    max-width: 1200px;
    margin: auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
  }
  
  /* CARDS */
  .card {
    background: #fff;
    border-radius: 6px;
    padding: 25px;
    box-shadow: 0 2px 5px rgba(0,0,0,.1);
  }
  
  /* LOGIN */
  .login-card h2 {
    margin-top: 0;
    font-size: 20px;
  }
  
  .input-group {
    display: flex;
    margin-bottom: 10px;
  }
  
  .input-group input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
  }
  
  .keyboard-btn {
    background: #7dbb3a;
    border: none;
    color: #fff;
    padding: 0 12px;
    cursor: pointer;
  }
  
  .checkbox {
    margin: 10px 0;
    font-size: 14px;
  }
  
  .hint {
    font-size: 12px;
    color: #666;
  }
  
  .captcha {
    margin: 15px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid #ccc;
    padding: 10px;
  }
  
  .btn-primary {
    width: 100%;
    background: #7dbb3a;
    color: #fff;
    border: none;
    padding: 12px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 4px;
  }
  
  .activation {
    margin-top: 15px;
    font-size: 13px;
  }
  
  /* SIDEBAR */
  .sidebar .ad {
    background: #f5f5f5;
    height: 180px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
  }
  
  /* WARNING */
  .warning-card {
    max-width: 1200px;
    margin: 30px auto 0;
  }
  
  .warning-card h3 {
    margin-top: 0;
    color: #666;
  }
  
  .load-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
  }

  .spacer {
    padding: 30px;
  }
  
  /* FOOTER */
  .footer {
    text-align: center;
    padding: 20px;
    font-size: 12px;
    color: #666;
  }

  /* HTML: <div class="loader"></div> */
.loader {
    --d:22px;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    color: #7dbb3a;
    box-shadow: 
      calc(1*var(--d))      calc(0*var(--d))     0 0,
      calc(0.707*var(--d))  calc(0.707*var(--d)) 0 1px,
      calc(0*var(--d))      calc(1*var(--d))     0 2px,
      calc(-0.707*var(--d)) calc(0.707*var(--d)) 0 3px,
      calc(-1*var(--d))     calc(0*var(--d))     0 4px,
      calc(-0.707*var(--d)) calc(-0.707*var(--d))0 5px,
      calc(0*var(--d))      calc(-1*var(--d))    0 6px;
    animation: l27 1s infinite steps(8);
  }
  @keyframes l27 {
    100% {transform: rotate(1turn)}
  }
  
  /* RESPONSIVE */
  @media (max-width: 900px) {
    .container {
      grid-template-columns: 1fr;
    }
  
    .sidebar {
      order: 1;
    }

    .sidebar img {
        max-width: 250px;
    }
  }