.desktop-container {
    max-width: 1200px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.desktop-header {
    background: #2c3e50;
    color: #fff;
    padding: 15px 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.desktop-header h1 {
    font-size: 24px;
    font-weight: normal;
}

.desktop-header .tagline {
    font-size: 14px;
    color: #bdc3c7;
    margin-top: 5px;
}

.desktop-main {
    flex: 1;
    display: flex;
    padding: 20px;
    gap: 20px;
}

.desktop-sidebar {
    width: 220px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 15px;
}

.desktop-sidebar h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 8px;
}

.search-box {
    margin-bottom: 20px;
}

.search-box input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 14px;
}

.search-box input:focus {
    outline: none;
    border-color: #3498db;
}

.category-list {
    list-style: none;
}

.category-list li {
    padding: 10px 12px;
    cursor: pointer;
    border-radius: 3px;
    margin-bottom: 5px;
    transition: background 0.2s;
}

.category-list li:hover {
    background: #ecf0f1;
}

.category-list li.active {
    background: #3498db;
    color: #fff;
}

.category-list .count {
    float: right;
    font-size: 12px;
    color: #999;
}

.category-list li.active .count {
    color: #fff;
}

.desktop-content {
    flex: 1;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 20px;
}

.section-title {
    font-size: 18px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #ecf0f1;
    color: #2c3e50;
}

.app-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.app-card {
    width: calc(33.333% - 14px);
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 15px;
    transition: box-shadow 0.2s;
    background: #fff;
}

.app-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.app-card .icon {
    width: 64px;
    height: 64px;
    background: #ecf0f1;
    border-radius: 8px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #95a5a6;
}

.app-card h4 {
    font-size: 16px;
    margin-bottom: 5px;
    color: #2c3e50;
}

.app-card .summary {
    font-size: 13px;
    color: #666;
    margin-bottom: 10px;
    height: 40px;
    overflow: hidden;
}

.app-card .meta {
    font-size: 12px;
    color: #999;
    margin-bottom: 10px;
}

.app-card .meta span {
    margin-right: 15px;
}

.app-card .download-btn {
    display: inline-block;
    padding: 8px 20px;
    background: #2563eb;
    color: #fff;
    border-radius: 3px;
    font-size: 14px;
    transition: background 0.2s;
}

.app-card .download-btn:hover {
    background: #1d4ed8;
}

.featured-section {
    margin-bottom: 30px;
}

.desktop-footer {
    background: #34495e;
    color: #bdc3c7;
    text-align: center;
    padding: 15px;
    font-size: 13px;
}

.breadcrumb {
    margin-bottom: 20px;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #3498db;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.app-detail {
    padding: 20px;
}

.app-detail-header {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #ecf0f1;
}

.app-detail-header .icon {
    width: 120px;
    height: 120px;
    background: #ecf0f1;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: #95a5a6;
    flex-shrink: 0;
}

.app-detail-header .info {
    flex: 1;
}

.app-detail-header h2 {
    font-size: 24px;
    margin-bottom: 10px;
    color: #2c3e50;
}

.app-detail-header .category {
    display: inline-block;
    padding: 4px 12px;
    background: #3498db;
    color: #fff;
    border-radius: 3px;
    font-size: 13px;
    margin-bottom: 15px;
}

.app-detail-header .meta {
    font-size: 14px;
    color: #666;
    line-height: 2;
}

.app-detail-header .meta span {
    margin-right: 20px;
}

.app-detail-header .actions {
    margin-top: 20px;
}

.app-detail-header .download-btn {
    display: inline-block;
    padding: 12px 40px;
    background: #2563eb;
    color: #fff;
    border-radius: 4px;
    font-size: 16px;
    transition: background 0.2s;
}

.app-detail-header .download-btn:hover {
    background: #1d4ed8;
}

.app-detail-content {
    line-height: 1.8;
}

.app-detail-content h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #2c3e50;
}

.app-detail-content p {
    margin-bottom: 15px;
    color: #555;
}