body {
    font-family: Arial, sans-serif;
    background-color: #d4d7ff; 
    color: #ffffff;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* 容器样式 */
.container {
    background-color: #697af9;
    border-radius: 15px;
    padding: 20px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

/* 标题样式 */
h1 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 24px;
    color: #ffffff;
}

/* 功能项样式 */
.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

/* 按钮样式 */
.btn {
    background-color: #0d47a1; /* 深蓝色按钮 */
    color: #ffffff;
    border: none;
    padding: 10px 15px;
    border-radius: 25px; /* 圆角按钮 */
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #003380; /* 悬停时更深的蓝色 */
}

/* 开关按钮样式 */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #2196f3; /* 蓝色开关 */
}

input:checked + .slider:before {
    transform: translateX(26px);
}