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

:root {
  --primary-color: #2563eb;
  --secondary-color: #1e40af;
  --text-color: #1f2937;
  --bg-color: #ffffff;
  --card-bg: #f9fafb;
  --border-color: #e5e7eb;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
    sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.container {
  max-width: 800px;
  width: 100%;
  background: var(--bg-color);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  padding: 40px;
  margin: 20px;
}

header {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 30px;
  border-bottom: 2px solid var(--border-color);
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 10px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 1.2rem;
  color: #6b7280;
  font-weight: 300;
}

.content {
  margin: 40px 0;
}

.card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 30px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.card h2 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 1.5rem;
}

.card p {
  color: #4b5563;
  line-height: 1.8;
}

.card ul {
  list-style: none;
  padding-left: 0;
}

.card ul li {
  padding: 10px 0;
  padding-left: 25px;
  position: relative;
  color: #4b5563;
}

.card ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

footer {
  text-align: center;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 2px solid var(--border-color);
  color: #6b7280;
}

/* Animations */
.fade-in {
  animation: fadeIn 1s ease-in;
}

.fade-in-delay {
  animation: fadeIn 1s ease-in 0.3s both;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 30px 20px;
    margin: 10px;
  }

  h1 {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .card {
    padding: 20px;
  }
}