.join-wrapper {
    width: 900px;
    margin: 100px auto;
    display: flex;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    overflow: hidden;
}

.join-left,
.join-right {
    width: 50%;
    padding: 50px;
    text-align: center;
}

.join-left {
    border-right: 1px solid #eee;
}

.desc {
    margin: 20px 0 30px;
    color: #666;
}

.btn-normal {
    display: inline-block;
    width: 100%;
    height: 50px;
    line-height: 50px;
    background: #6496dc;
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-weight: bold;
}

.sns-btn {
    display: block;
    width: 100%;
    height: 50px;
    line-height: 50px;
    border-radius: 6px;
    margin-bottom: 15px;
    text-decoration: none;
    font-weight: bold;
}

.naver { background: #03c75a; color:#fff; }
.kakao { background: #fee500; color:#000; }
.google { background: #db4437; color:#fff; }