/* 主体内容区域 */
.content-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    height: 93vh;
    background-color:#e1ecee;
}

/* 会员类型选项按钮 */
.member-option {
    width: 90%;
    max-width: 400px; /* 限制最大宽度，大屏也不会过宽 */
    height: 80px;
    line-height: 80px;
    background-color: #fff;
    border-radius: 8px;
    margin-bottom: 25px;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 24px;
    color: #333;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05); /* 轻微阴影更贴近原图质感 */
}

.option-arrow {
    font-size: 20px;
    color: #999;
}

.option-arrow img{
    width:24px;
}

/* 适配小屏幕手机（320px及以下） */
@media (max-width: 320px) {
    .member-option {
        height: 70px;
        line-height: 70px;
        font-size: 20px;
    }
    .main-nav .nav-title {
        font-size: 18px;
    }
    .back-btn {
        font-size: 18px;
    }
}

/* 适配大屏手机（420px及以上） */
@media (min-width: 420px) {
    .member-option {
        height: 90px;
        line-height: 90px;
        font-size: 26px;
        margin-bottom: 30px;
    }
    .main-nav {
        padding: 20px 15px;
    }
    .main-nav .nav-title {
        font-size: 22px;
    }
}