* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #0f0f0f;
            color: #f1f1f1;
            line-height: 1.6;
            padding: 20px;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        header {
            text-align: center;
            padding: 20px 0 30px;
            border-bottom: 1px solid #333;
            margin-bottom: 30px;
        }
        
        h1 {
            color: #ff0000;
            margin-bottom: 10px;
            font-size: 2.2rem;
        }
        
        .subtitle {
            color: #aaa;
            font-size: 1rem;
        }
        
        .instructions {
            background-color: #1a1a1a;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 25px;
            border-left: 4px solid #ff0000;
        }
        
        .instructions h3 {
            color: #ff0000;
            margin-bottom: 8px;
        }
        
        .instructions ul {
            padding-left: 20px;
            color: #ccc;
        }
        
        .instructions li {
            margin-bottom: 5px;
        }
        
        .instructions code {
            background-color: #333;
            padding: 2px 6px;
            border-radius: 4px;
            font-family: monospace;
        }
        
        .videos-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            margin-bottom: 40px;
        }
        
        .video-card {
            background-color: #1a1a1a;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            cursor: pointer;
            border: 1px solid #333;
        }
        
        .video-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(255, 0, 0, 0.1);
            border-color: #ff0000;
        }
        
        .thumbnail {
            position: relative;
            width: 100%;
            height: 180px;
            overflow: hidden;
        }
        
        .thumbnail img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        
        .video-card:hover .thumbnail img {
            transform: scale(1.05);
        }
        
        .play-button {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: rgba(255, 0, 0, 0.8);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 24px;
            opacity: 0.9;
            transition: all 0.3s ease;
        }
        
        .video-card:hover .play-button {
            background-color: #ff0000;
            opacity: 1;
            width: 65px;
            height: 65px;
        }
        
        .video-info {
            padding: 15px;
        }
        
        .video-title {
            font-weight: 600;
            margin-bottom: 8px;
            font-size: 1.1rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 52px;
        }
        
        .video-description {
            color: #aaa;
            font-size: 0.9rem;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .video-meta {
            display: flex;
            justify-content: space-between;
            color: #888;
            font-size: 0.85rem;
            border-top: 1px solid #333;
            padding-top: 12px;
        }
        
        footer {
            text-align: center;
            padding: 20px;
            color: #666;
            font-size: 0.9rem;
            border-top: 1px solid #333;
            margin-top: 30px;
        }
        
        /* Modal for link selection */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }
        
        .modal-content {
            background-color: #1a1a1a;
            padding: 30px;
            border-radius: 12px;
            width: 90%;
            max-width: 500px;
            border: 1px solid #ff0000;
            text-align: center;
        }
        
        .modal h3 {
            color: #fff;
            margin-bottom: 15px;
            font-size: 1.5rem;
        }
        
        .modal p {
            color: #ccc;
            margin-bottom: 25px;
        }
        
        .button-group {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .btn {
            padding: 12px 24px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn-app {
            background-color: #ff0000;
            color: white;
        }
        
        .btn-web {
            background-color: #333;
            color: white;
        }
        
        .btn-cancel {
            background-color: transparent;
            color: #aaa;
            border: 1px solid #555;
        }
        
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        
        .btn-app:hover {
            background-color: #cc0000;
        }
        
        .btn-web:hover {
            background-color: #444;
        }
        
        /* Responsive adjustments */
        @media (max-width: 768px) {
            .videos-container {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
                gap: 20px;
            }
            
            .thumbnail {
                height: 160px;
            }
        }
        
        @media (max-width: 576px) {
            .videos-container {
                grid-template-columns: 1fr;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            .button-group {
                flex-direction: column;
            }
            
            .btn {
                width: 100%;
                justify-content: center;
            }
        }