body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
}

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

header {
    background-color: #4CAF50;
    color: white;
    padding: 20px 0;
    text-align: center;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    text-align: left;
    display: flex;
    align-items: center;
}

.logo-section img {
    height: 150px; /* 与捐赠二维码图片大小一致 */
    width: 150px; /* 与捐赠二维码图片大小一致 */
    object-fit: contain; /* 保持图片比例 */
    margin-right: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.logo-section h2 {
    margin: 0;
    display: inline-block;
    vertical-align: middle;
}

.donate-section {
    text-align: center;
}

.donate-section img {
    max-width: 150px; /* 调整捐赠二维码大小 */
    height: auto;
    margin-bottom: 10px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.download-section {
    text-align: right;
}

.download-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
    font-size: 16px;
}

.download-btn:hover {
    background-color: #45a049;
}

.download-btn i {
    margin-right: 5px;
}

main {
    padding: 40px 0;
}

section {
    margin-bottom: 40px;
}

section h2 {
    margin-bottom: 20px;
    color: #4CAF50;
}

#interface {
    max-width: 100%;
    height: auto;
    margin-top: 10px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 20px 0;
    position: relative;
    width: 100%;
}

footer p {
    margin: 0;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: center;
    }

    .logo-section img {
        margin-right: 0;
        margin-bottom: 20px;
    }

    .logo-section h2 {
        margin-top: 10px;
    }

    .donate-section {
        margin-bottom: 20px;
    }

    .container {
        padding: 0 10px;
    }
}