* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft Yahei", Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    display: inline-block;
    margin-right: 20px;
}

header .stats {
    display: inline-block;
    margin-right: 20px;
    font-size: 14px;
    color: #bdc3c7;
}

header .stats span {
    margin-right: 15px;
}

header .admin-btn {
    float: right;
    background-color: #3498db;
    color: white;
    padding: 5px 15px;
    border-radius: 3px;
    text-decoration: none;
    margin-top: 5px;
}

main {
    padding: 30px 0;
}

.app-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.app-card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 20px;
    transition: transform 0.3s;
}

.app-card:hover {
    transform: translateY(-5px);
}

.app-icon {
    text-align: center;
    margin-bottom: 15px;
}

.app-icon img {
    width: 120px;
    height: 120px;
    border-radius: 15px;
    object-fit: cover;
}

.app-name {
    font-size: 18px;
    margin-bottom: 10px;
    color: #2c3e50;
}

.app-desc {
    color: #7f8c8d;
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 15px;
    height: 45px;
    overflow: hidden;
}

.app-meta {
    font-size: 12px;
    color: #95a5a6;
    margin-bottom: 15px;
}

.app-meta span {
    display: inline-block;
    margin-right: 10px;
    margin-bottom: 5px;
}

.download-btn {
    display: block;
    width: 100%;
    background-color: #3498db;
    color: white;
    text-align: center;
    padding: 10px 0;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.3s;
}

.download-btn:hover {
    background-color: #2980b9;
}

.empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 50px 0;
    color: #7f8c8d;
    font-size: 18px;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 50px;
    font-size: 14px;
}

@media (max-width: 1200px) {
    .container {
        width: 100%;
    }
    .app-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .app-list {
        grid-template-columns: 1fr;
    }
    header .stats {
        display: block;
        margin-top: 10px;
    }
}