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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #0b0f1a;
  color: #fff;
}

a {
  text-decoration: none;
  color: inherit;
}

.btn {
  padding: 10px 18px;
  border-radius: 10px;
  background: #1c1f2e;
  color: #fff;
  font-weight: 500;
}

.btn.primary {
  background: linear-gradient(135deg,#7a3cff,#a855f7);
}

.btn.big {
  padding: 14px 28px;
  font-size: 16px;
}