:root {
  --background-color: #0d0d1a;
  --text-color: #c0c0d0;
  --primary-color: #00e5ff;
  --container-bg-color: rgba(10, 25, 47, 0.5);
  --border-color: rgba(0, 229, 255, 0.3);
  --font-family-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-family-heading: 'Exo 2', sans-serif;
}

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

html, body {
  height: 100%;
}

body {
  font-family: var(--font-family-body);
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.site-header {
  width: 100%;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  font-family: var(--font-family-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}

#root {
  display: flex;
  justify-content: center;
  padding: 2rem 1rem;
}

.container {
  width: 100%;
  max-width: 800px;
  background-color: var(--container-bg-color);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

h1, h2 {
  font-family: var(--font-family-heading);
  color: #fff;
  letter-spacing: 0.5px;
}

h1 {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

p {
  margin-bottom: 1rem;
}

.intro {
  font-size: 1.1rem;
  color: #e0e0e0;
}

ul {
  list-style-type: none;
  padding-left: 0.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
}

li::before {
  content: '■';
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--primary-color);
  font-size: 0.8rem;
}

section {
  margin-bottom: 1.5rem;
}

.back-link {
  display: inline-block;
  text-decoration: none;
  color: var(--primary-color);
  margin-bottom: 2rem;
  font-size: 1rem;
  transition: all 0.2s ease-in-out;
}

.back-link:hover {
  color: #fff;
  text-shadow: 0 0 5px var(--primary-color);
  transform: translateX(-5px);
}

@media (max-width: 768px) {
  .site-header {
    padding: 1rem 1.5rem;
  }
  .container {
    padding: 1.5rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.5rem;
  }
}