* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background: #0b0b12;
  color: white;
}

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 30px;
}

.tag {
  letter-spacing: 5px;
  font-size: 14px;
  font-weight: bold;
}

h1 {
  font-size: clamp(42px, 8vw, 90px);
  line-height: 0.95;
  margin: 20px 0;
}

h1 span {
  opacity: 0.55;
}

.subtitle {
  max-width: 620px;
  font-size: 18px;
  line-height: 1.6;
  opacity: 0.7;
}

button {
  margin-top: 20px;
  padding: 14px 24px;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  font-size: 16px;
}

#message {
  min-height: 24px;
  margin-top: 18px;
}