*, *::before, *::after {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background-color: #0f1115;
  color: #e0e0e0;
  line-height: 1.6;
}
header {
  background: #1a1d23;
  padding: 2rem 1rem;
  text-align: center;
  border-bottom: 1px solid #333;
}
header h1 {
  font-size: 2.5rem;
  color: #00c8ff;
  margin: 0;
}
.subtitle {
  color: #999;
  font-size: 1.1rem;
}
nav {
  background: #121418;
  border-bottom: 1px solid #222;
}
.nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 0;
  padding: 0.5rem 0;
}
.nav li {
  margin: 0 1rem;
}
.nav a {
  color: #ccc;
  text-decoration: none;
  transition: color 0.2s ease;
}
.nav a:hover {
  color: #00c8ff;
}
main {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 0 1rem;
}
.section {
  margin-bottom: 2rem;
}
.section h2 {
  color: #00c8ff;
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}
.section ul {
  padding-left: 1.5rem;
}
.section ul li {
  margin-bottom: 0.5rem;
}
footer {
  background: #1a1d23;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #777;
}
.license {
  font-size: 0.85rem;
  color: #888;
  margin-top: 1rem;
}
a {
  color: #00c8ff;
}
#download-links-wrapper {
  background-color: #111827;
  border: 1px solid #2d3748;
  border-radius: 0.5rem;
  padding: 1.5rem;
  margin-top: 2rem;
}
.install-os {
  margin-top: 2rem;
  background-color: #1a1d23;
  padding: 1rem;
  border-radius: 8px;
}
.install-os h3 {
  color: #00c8ff;
  margin-bottom: 1rem;
}
.install-card {
  border: 1px solid #2c2f36;
  background-color: #181b20;
  margin-bottom: 1rem;
  border-radius: 6px;
  cursor: pointer;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}
.install-card:hover {
  box-shadow: 0 0 8px rgba(0, 200, 255, 0.2);
}
.install-card-title {
  padding: 0.75rem 1rem;
  font-weight: bold;
  color: #00c8ff;
  font-size: 1rem;
  text-align: left;
}
.install-card-title::after {
  content: "▼";
  float: right;
  font-size: 0.8rem;
  color: #888;
  transition: transform 0.3s ease;
  margin-left: 8px; 
}
.install-card.open .install-card-title::after {
  transform: rotate(180deg);
  color: #00c8ff;
}
.install-card-content {
  padding: 0 1rem 0.75rem;
  font-size: 0.95rem;
  color: #ccc;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  text-align: left;
  line-height: 1.5;
  visibility: hidden;
  opacity: 0;
  transition: all 0.4s ease;
}
.install-card.open .install-card-content {
  max-height: 1000px;
  visibility: visible;
  opacity: 1;
}
.install-card-content code,
.install-card-content pre {
  font-family: "Courier New", monospace;
  background-color: #121212;
  color: #00f0ff;
  padding: 0.25rem 0.5rem;
  display: block;
  margin: 0.5rem 0;
  border-radius: 4px;
  white-space: pre-wrap;
  font-size: 0.9rem;
}
.install-card-content a {
  color: #00c8ff;
  text-decoration: underline;
  transition: color 0.2s ease;
}

.install-card-content a:hover {
  color: #00e0ff;
  text-decoration: none;
}