/* 全局样式 */
body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #000;
    color: #fff;
    font-size: 16px;
}

.header {
    background: linear-gradient(to right, #8B0000, #000);
    padding: 20px;
    text-align: center;
}

.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.features {
    display: flex;
    justify-content: space-between;
    margin: 30px 0;
}

.feature {
    flex: 1;
    margin: 0 10px;
    text-align: center;
}

.download-btn {
    display: inline-block;
    background: #FFD700;
    color: #000;
    padding: 15px 30px;
    text-decoration: none;
    font-weight: bold;
    margin: 20px 0;
    border-radius: 5px;
    transition: background 0.3s;
}

.download-btn:hover {
    background: #FFC107;
}

.footer {
    background: #000;
    padding: 20px;
    text-align: center;
    margin-top: 30px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .features {
        flex-direction: column;
    }
    .feature {
        margin: 10px 0;
    }
}