:root {
            --primary-color: #1e293b;
            --accent-color: #3b82f6;
            --bg-color: #f8f9fa;
            --card-bg: #ffffff;
            --text-color: #334155;
            --border-color: #e2e8f0;
        }
        body { 
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; 
            background-color: var(--bg-color); 
            color: var(--text-color);
            line-height: 1.6;
            margin: 0;
            }
        .container {
            max-width: 1000px;
            margin: 8px auto;
            padding: 40px;
            background: #e3ece3;
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            border-radius: 16px;
        }
        header {
            text-align: center;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        header::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: linear-gradient(to right, var(--accent-color), #a78bfa);
            border-radius: 2px;
        }
        h1 { 
            color: var(--primary-color); 
            font-size: 2.5rem;
            margin-bottom: 10px;
            font-weight: 800;
        }
        .subtitle {
            color: #64748b;
            font-size: 1.1rem;
        }
        .author-info {
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin: 30px 0;
            padding: 20px;
            background: #f1f5f9;
            border-radius: 12px;
        }
        .author-info img {
            height: 40px;
            border-radius: 4px;
        }
        .download-box {
            text-align: center;
            margin: 30px 0;
        }
        .btn-download {
            display: inline-block;
            padding: 12px 24px;
            background: var(--accent-color);
            color: white;
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.2s;
        }
        .btn-download:hover {
            background: #2563eb;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }
        .btn-home {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary-color);
            color: #fff;
            text-decoration: none;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all 0.2s;
            margin-bottom: 16px;
        }
        .btn-home:hover {
            background: #334155;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(30, 41, 59, 0.3);
        }
        h2 {
            color: var(--primary-color);
            border-left: 5px solid var(--accent-color);
            padding-left: 15px;
            margin-top: 40px;
            font-size: 1.5rem;
        }
        .app-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 15px;
            margin-top: 20px;
        }
        .app-item {
            padding: 5px 20px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            justify-content: space-between;
            align-items: center;
            text-decoration: none;
            color: inherit;
            transition: all 0.2s;
        }
        .app-item:hover {
            border-color: var(--accent-color);
            background: #f0f7ff;
            transform: scale(1.02);
        }
        .app-name {
            font-weight: 500;
            color: var(--primary-color);
        }
        .app-date {
            font-size: 0.85rem;
            color: #94a3b8;
        }
        @media (max-width: 640px) {
            .container { margin: 10px; padding: 20px; }
            h1 { font-size: 1.8rem; }
            .app-grid { grid-template-columns: 1fr; }
        }