Changed around line 1
+ :root {
+ --primary-color: #ff6b6b;
+ --secondary-color: #4ecdc4;
+ --background-color: #f7fff7;
+ --text-color: #292f36;
+ --accent-color: #ffe66d;
+ }
+
+ body {
+ font-family: 'Segoe UI', system-ui, sans-serif;
+ line-height: 1.6;
+ margin: 0;
+ padding: 0;
+ background-color: var(--background-color);
+ color: var(--text-color);
+ }
+
+ header {
+ background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
+ color: white;
+ padding: 2rem;
+ text-align: center;
+ }
+
+ h1 {
+ font-size: 2.5rem;
+ margin-bottom: 0.5rem;
+ }
+
+ nav {
+ background-color: var(--text-color);
+ padding: 1rem;
+ }
+
+ nav ul {
+ list-style: none;
+ display: flex;
+ justify-content: center;
+ gap: 2rem;
+ margin: 0;
+ padding: 0;
+ }
+
+ nav a {
+ color: white;
+ text-decoration: none;
+ font-weight: bold;
+ transition: color 0.3s ease;
+ }
+
+ nav a:hover {
+ color: var(--accent-color);
+ }
+
+ main {
+ padding: 2rem;
+ max-width: 1200px;
+ margin: 0 auto;
+ }
+
+ section {
+ margin-bottom: 3rem;
+ }
+
+ h2 {
+ color: var(--primary-color);
+ margin-bottom: 1.5rem;
+ }
+
+ .command-grid, .challenge-grid {
+ display: grid;
+ grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+ gap: 2rem;
+ }
+
+ .command, .challenge {
+ background: white;
+ padding: 1.5rem;
+ border-radius: 8px;
+ box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+ transition: transform 0.3s ease;
+ }
+
+ .command:hover, .challenge:hover {
+ transform: translateY(-5px);
+ }
+
+ footer {
+ background-color: var(--text-color);
+ color: white;
+ text-align: center;
+ padding: 1rem;
+ }
+
+ @media (max-width: 768px) {
+ h1 {
+ font-size: 2rem;
+ }
+
+ nav ul {
+ flex-direction: column;
+ gap: 1rem;
+ }
+
+ .command-grid, .challenge-grid {
+ grid-template-columns: 1fr;
+ }
+ }