:root{
    --red:#b22222;
    --bg:#f6f7fb;
    --card:#ffffff;
    --text:#2b2b2b;
    --muted:#666;
  }
  
  *{
    box-sizing: border-box;
  }
  
  body{
    margin:0;
    font-family: Arial, sans-serif;
    background:
      radial-gradient(circle at 10% 10%, #ffe7ea 0%, rgba(255,231,234,0) 45%),
      radial-gradient(circle at 90% 20%, #ffe7ea 0%, rgba(255,231,234,0) 45%),
      radial-gradient(circle at 30% 90%, #e7f0ff 0%, rgba(231,240,255,0) 45%),
      var(--bg);
    color: var(--text);
  }
  
  a{
    color: var(--red);
    text-decoration: none;
  }
  
  .btn{
    display:inline-block;
    padding: 13px 18px;
    border-radius: 12px;
    background: var(--red);
    color: #fff;
    font-weight: bold;
    border:none;
    cursor:pointer;
    box-shadow: 0 10px 18px rgba(178,34,34,.25);
    transition: transform .15s ease, box-shadow .15s ease;
  }
  
  .btn:hover{
    transform: translateY(-2px);
    box-shadow: 0 14px 22px rgba(178,34,34,.30);
  }