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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #e4e4e7;
  background-color: #0f0f23;
  padding: 2rem 1rem;
  min-height: 100vh;
}

main {
  max-width: 800px;
  margin: 0 auto;
}

article {
  background-color: #1a1a2e;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  border: 1px solid #27272a;
}

h3 {
  color: #fbbf24;
  font-size: 2rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
  border-bottom: 2px solid #27272a;
  padding-bottom: 0.5rem;
}

h4 {
  color: #60a5fa;
  font-size: 1.3rem;
  margin: 2rem 0 1rem 0;
  font-weight: 500;
}

section {
  margin-bottom: 1.5rem;
}

section:first-of-type {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  color: #d4d4d8;
}

a {
  color: #34d399;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #6ee7b7;
  text-decoration: underline;
}

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

li {
  padding: 0.3rem 0;
  position: relative;
  padding-left: 1.2rem;
}

li:before {
  content: '▸';
  color: #fbbf24;
  position: absolute;
  left: 0;
  font-weight: bold;
}

i {
  color: #f97316;
  font-style: normal;
  font-weight: 500;
}

@media (max-width: 600px) {
  body {
    padding: 1rem 0.5rem;
  }
  
  article {
    padding: 1.5rem;
  }
  
  h3 {
    font-size: 1.7rem;
  }
  
  h4 {
    font-size: 1.2rem;
  }
}

article {
  animation: fadeIn 0.5s ease-in;
}

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

footer {
  max-width: 800px;
  margin: 2rem auto 0 auto;
  padding: 1.5rem 2rem;
  background-color: #1a1a2e;
  border-radius: 8px;
  border: 1px solid #27272a;
  text-align: center;
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

footer a {
  color: #34d399;
  font-weight: 500;
  transition: all 0.2s ease;
  padding: 0.5rem 1rem;
  border-radius: 4px;
}

footer a:hover {
  background-color: #27272a;
  color: #6ee7b7;
  text-decoration: none;
  transform: translateY(-2px);
}

a:focus {
  outline: 2px solid #60a5fa;
  outline-offset: 2px;
  border-radius: 2px;
}

@media (max-width: 600px) {
  footer {
    margin: 1.5rem 0.5rem 0 0.5rem;
    padding: 1rem;
    gap: 1rem;
    flex-direction: column;
  }
  
  footer a {
    padding: 0.75rem;
  }
}