* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

body {
  background: #0b0f17;
  color: #e6eaf2;
}

/* Layout */

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}

/* Header */

.header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 40px;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.title {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.3px;
}

/* Button */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;

  padding: 10px 16px;
  border-radius: 10px;

  font-size: 14px;
  font-weight: 600;

  text-decoration: none;
  cursor: pointer;

  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff;

  border: 1px solid rgba(99, 102, 241, 0.4);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.35);
}

/* Main */

.main-content {
  display: flex;
  justify-content: center;
}

.intro {
  font-size: 16px;
  line-height: 1.6;
  color: #cbd5e1;

  margin-bottom: 16px;
  max-width: 600px;
}

/* Optional: subtle card feel */

.main-content .container {
  background: linear-gradient(180deg, #111827, #0f1624);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 14px;

  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

/* Responsive */

@media (max-width: 640px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .container {
    padding: 16px;
  }
}