Changed around line 1
+ :root {
+ --primary-color: #2563eb;
+ --secondary-color: #1e40af;
+ --background-color: #f8fafc;
+ --text-color: #1e293b;
+ --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
+ }
+
+ * {
+ margin: 0;
+ padding: 0;
+ box-sizing: border-box;
+ }
+
+ body {
+ font-family: system-ui, -apple-system, sans-serif;
+ line-height: 1.6;
+ color: var(--text-color);
+ background-color: var(--background-color);
+ }
+
+ .container {
+ max-width: 1200px;
+ margin: 0 auto;
+ padding: 0 20px;
+ }
+
+ .header {
+ background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
+ color: white;
+ padding: 4rem 0;
+ text-align: center;
+ }
+
+ .header h1 {
+ font-size: 3rem;
+ margin-bottom: 1rem;
+ }
+
+ .navbar {
+ background-color: white;
+ box-shadow: var(--card-shadow);
+ position: sticky;
+ top: 0;
+ z-index: 100;
+ }
+
+ .navbar ul {
+ display: flex;
+ justify-content: center;
+ list-style: none;
+ padding: 1rem 0;
+ }
+
+ .navbar a {
+ color: var(--text-color);
+ text-decoration: none;
+ padding: 0.5rem 1rem;
+ transition: color 0.3s;
+ }
+
+ .navbar a:hover {
+ color: var(--primary-color);
+ }
+
+ .section {
+ padding: 4rem 0;
+ }
+
+ .section h2 {
+ font-size: 2rem;
+ margin-bottom: 2rem;
+ text-align: center;
+ }
+
+ .card-grid, .guide-list, .case-grid, .video-grid {
+ display: grid;
+ gap: 2rem;
+ }
+
+ .card-grid {
+ grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+ }
+
+ .card {
+ background: white;
+ padding: 2rem;
+ border-radius: 8px;
+ box-shadow: var(--card-shadow);
+ text-align: center;
+ }
+
+ .card h3 {
+ margin-bottom: 1rem;
+ }
+
+ .btn {
+ display: inline-block;
+ background-color: var(--primary-color);
+ color: white;
+ padding: 0.5rem 1rem;
+ border-radius: 4px;
+ text-decoration: none;
+ transition: background-color 0.3s;
+ }
+
+ .btn:hover {
+ background-color: var(--secondary-color);
+ }
+
+ .guide-list {
+ max-width: 800px;
+ margin: 0 auto;
+ }
+
+ .guide {
+ background: white;
+ padding: 1.5rem;
+ border-radius: 8px;
+ box-shadow: var(--card-shadow);
+ }
+
+ .video-card {
+ background: white;
+ padding: 1.5rem;
+ border-radius: 8px;
+ box-shadow: var(--card-shadow);
+ text-align: center;
+ }
+
+ .video-placeholder {
+ background: #e2e8f0;
+ height: 200px;
+ border-radius: 8px;
+ margin: 1rem 0;
+ }
+
+ .footer {
+ background-color: var(--text-color);
+ color: white;
+ text-align: center;
+ padding: 2rem 0;
+ }
+
+ @media (max-width: 768px) {
+ .header h1 {
+ font-size: 2rem;
+ }
+
+ .navbar ul {
+ flex-direction: column;
+ align-items: center;
+ }
+
+ .card-grid {
+ grid-template-columns: 1fr;
+ }
+ }