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

body {
  font-family: 'Poppins', sans-serif;
  background: radial-gradient(circle at top, #1a0000, #000);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  text-align: center;
  padding: 20px;
  max-width: 800px;
}

.logo {
  width: 100px;
  height: auto;
  margin-bottom: 20px;
}

h1 {
  font-size: 2em;
  color: #fff;
  text-shadow: 0 0 10px #ff0000;
}

h1 span {
  color: #ff3333;
}

.subtitle {
  margin: 15px 0 25px;
  font-size: 1.1em;
  line-height: 1.5;
  color: #ddd;
}

.btn {
  display: inline-block;
  background: linear-gradient(90deg, #ff0000, #990000);
  color: #fff;
  text-decoration: none;
  padding: 14px 30px;
  border-radius: 50px;
  font-size: 1.1em;
  transition: 0.3s;
  box-shadow: 0 0 20px rgba(255,0,0,0.4);
}

.btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(255,0,0,0.6);
}

.tip {
  margin-top: 15px;
  font-size: 0.9em;
  color: #999;
}

.about {
  margin-top: 60px;
  background: rgba(30, 0, 0, 0.6);
  padding: 30px;
  border-radius: 20px;
  text-align: left;
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.2);
}

.about h2 {
  color: #ff3333;
  font-size: 1.6em;
  margin-bottom: 15px;
  text-align: center;
  text-shadow: 0 0 10px #ff0000;
}

.about p {
  color: #ddd;
  line-height: 1.7;
  margin-bottom: 12px;
  font-size: 1em;
}

footer {
  margin-top: 50px;
  font-size: 0.8em;
  color: #777;
}