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

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
    sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #f0f9ff 0%, #f8fafc 100%);
  padding: 20px;
}

.container {
  background: white;
  padding: 60px 40px;
  border-radius: 24px;
  box-shadow: 0 20px 60px -10px rgba(15, 23, 42, 0.08);
  text-align: center;
  max-width: 600px;
  width: 100%;
}

h1 {
  color: #0f172a;
  font-size: 2rem;
  margin-bottom: 12px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  color: #2563eb;
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 32px;
  letter-spacing: 0.5px;
}

.intro {
  color: #475569;
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid #e2e8f0;
  text-align: left;
}

.intro p {
  margin-bottom: 18px;
}

.intro p:last-child {
  margin-bottom: 0;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8 0%, #1e3a8a 100%);
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: #f1f5f9;
  color: #1e293b;
  border: 2px solid #e2e8f0;
}

.btn-secondary:hover {
  background: #e8eef7;
  border-color: #cbd5e1;
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

@media (max-width: 640px) {
  .container {
    padding: 40px 24px;
  }

  h1 {
    font-size: 1.75rem;
  }

  .subtitle {
    font-size: 1rem;
    margin-bottom: 32px;
  }

  .intro {
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 28px;
    padding-bottom: 28px;
  }

  .btn {
    padding: 11px 20px;
    font-size: 0.95rem;
  }
}