* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Montserrat', sans-serif;
  background: linear-gradient(to right, #667db6, #485563);
  background-size: cover;
  color: #333;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.container {
  background: rgba(255, 255, 255, 0.94);
  padding: 40px 30px;
  border-radius: 20px;
  max-width: 400px;
  width: 100%;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  text-align: center;
  animation: fadeIn 0.8s ease-in-out;
}
@keyframes fadeIn {
  from {opacity: 0; transform: translateY(20px);}
  to {opacity: 1; transform: translateY(0);}
}
.circle-photo {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #ddd;
  margin-bottom: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}
.subscribers {
  font-size: 15px;
  color: #777;
  margin-bottom: 12px;
}
h1 {
  font-size: 24px;
  margin-bottom: 20px;
  color: #222;
  font-weight: 600;
}
ul {
  text-align: left;
  list-style: none;
  padding-left: 0;
  margin-bottom: 30px;
}
ul li {
  margin-bottom: 12px;
  padding-left: 28px;
  position: relative;
  font-size: 15px;
  color: #444;
}
ul li::before {
  content: none;
  color: #4CAF50;
  position: absolute;
  left: 0;
  font-size: 16px;
}
a.black-button {
  display: inline-block;
  width: 100%;
  background-color: #000;
  color: #fff;
  text-align: center;
  text-decoration: none;
  padding: 14px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}
a.black-button:hover {
  background-color: #333;
  transform: scale(1.02);
}
@media (max-width: 480px) {
  .container {
    padding: 30px 20px;
  }
  h1 {
    font-size: 20px;
  }
  ul li {
    font-size: 14px;
  }
  .subscribers {
    font-size: 13px;
  }
  .circle-photo {
    width: 90px;
    height: 90px;
  }
  a.black-button {
    padding: 12px;
    font-size: 15px;
  }
}