@font-face {
    font-family: 'GangwonEduPowerExtraBoldA';
    src: url('https://fastly.jsdelivr.net/gh/projectnoonnu/noonfonts_2201-2@1.0/GangwonEduPowerExtraBoldA.woff') format('woff');
    font-weight: normal;
    font-style: normal;
}
#banner{
    width: 100%;
    margin-top: 100px;
}
.banner{
    width: 100%;
    
}
.banner img{
    width: 100%;
}
/* main_btn */
.main_btn{
    display:flex;
    align-items:stretch;
    justify-content:center;
    gap:0;
    background:#fff;
    border-radius:14px;
    box-shadow:0 10px 24px rgba(0,0,0,.12);
    overflow:hidden;
    max-width:960px;
    margin:16px auto;
}

/* 각 버튼 앵커 */
.main_btn .btn{
    position:relative;
    flex:1 1 25%;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:14px 22px;   /* 이미지 좌우 여백 */
    text-decoration:none;
}

/* 버튼 메인 이미지 */
.main_btn .btn img:first-child{
    display:block;
    max-width:100%;
    height:auto;
}

/* 분리선(bar.png): 두 번째 <img>를 세로선처럼 오른쪽에 고정 */
.main_btn .btn img + img{
    position:absolute;
    right:0;
    top:12px;
    bottom:12px;       /* 위아래 12px 여백 */
    width:auto;
    height:calc(100% - 24px);
    pointer-events:none;
}

/* 마지막 버튼은 bar 숨김 */
.main_btn .btn:last-child img + img{ display:none; }

/* ===== 반응형: 태블릿/모바일(≤768px)에서는 2×2로 ===== */
@media (max-width:768px){
    .main_btn{
        flex-wrap:wrap;
        width:calc(100% - 32px);  /* 화면 가장자리와 간격 */
    }
    .main_btn .btn{
        flex:1 1 50%;
        padding:12px 10px;
        min-width:0;
    }

    /* 모바일에선 bar.png 모두 숨김 (줄바꿈 시 어긋남 방지) */
    .main_btn .btn img + img{ display:none; }

    /* 모바일용 구분선(얇은 보더)로 대체 */
    .main_btn .btn{
        border-top:1px solid rgba(0,0,0,.06);
        border-left:1px solid rgba(0,0,0,.06);
    }
    .main_btn .btn:nth-child(1),
    .main_btn .btn:nth-child(2){ border-top:none; }
    .main_btn .btn:nth-child(1),
    .main_btn .btn:nth-child(3){ border-left:none; }
}

/* 아주 작은 화면(≤360px)에서 아이콘 살짝 축소 */
@media (max-width:360px){
    .main_btn .btn img:first-child{ max-width:88%; }
}

.main_tit{
    display: flex;
    justify-content: center;
    text-align: center;
}
.main_tit p{
    font-size: 1.8rem;
    padding: 0 2%;
    font-family: 'GangwonEduPowerExtraBoldA';
    font-weight: 400;
    font-style: normal;
    color: #606161;
    border-bottom: 5px double #606161;
}
/* main_tit */
.main_tit{
    display: flex;
    justify-content: center;
    text-align: center;
}
.main_tit p{
    font-size: 1.8rem;
    padding: 0 2%;
    font-family: 'GangwonEduPowerExtraBoldA';
    font-weight: 400;
    font-style: normal;
    color: #606161;
    border-bottom: 5px double #606161;
}

/* ov_content */
#overview{
    width: 80%;
    margin: 10% auto;
}
.ov_content{
    margin-top: 5%;
    display: flex;
    gap: 5%;
}
.ov_poster{
    width: 500px;
}
.ov_poster img{
    width: 100%;
    object-fit: contain;
    box-shadow: 1px 1px 4px 0px rgba(13, 63, 111, 0.25);
}
.ov_text{
    width: 60%;
    margin-left: 3%;
}
.ov_text hr{
    background: #0c0c0c;
    height: 1px;
    border: 0;
}
.ov_text_list{
    display: flex;
    margin:5% 0 5% 0;
    gap: 5%;
}
.ov_text img{
    width: 20%;
    object-fit:contain;
    margin-left: 90%;
    margin-top: -10%;
}
.ov_tit{
    font-size: 1.25rem;
    font-weight: 700;
    padding-left: 2%;
    width: 20%;
}
.ov_detail{
    font-size: 1.25rem;
    font-weight: 500;
    width: 80%;
}
.ov_detail span{
    font-weight: 400;
    font-size: 1.1rem;
}
.ov_detail a{
    font-weight: 700;
    color: #E5896C;
    font-size: 1.1rem;
}
.ov_detail a:hover{
    border-bottom: 2px solid #E5896C;
}

/* invitation */
.invitation_text{
    margin-top: 5%;
    color: #0c0c0c;
    text-align: center;
}
.invitation_text p{
    font-size: 1.25rem;
    font-weight: 500;
}
/* speakers */
#speakers{
    width: 80%;
    margin: 10% auto;
}
.swiper{
    width: 100%;
    height: 300px;
}
.swiper-slide{
    position:  relative ;
}
.sp_wrap{
    width: 100%;
    height: 250px;
    padding: 1%;
    border-radius: 0.625rem;
    border: 2px solid #CFCFCF;
    background: #FFF;
    box-shadow: 2px 2px 10px 0px rgba(13, 63, 111, 0.25);
    margin-top: 5%;
}
.sp_pic{
    margin: 5% auto;
    width: 120px;
    height: 120px;
    border-radius: 100%;
}
.sp_detail{
    width: 100%;
    margin: 0 auto;
    text-align: center;
}
.sp_detail:nth-child(-n+1){
    margin-top: 30%;
}
.sp_detail .name{
    font-size: 18px;
    font-weight: 700;
}
.sp_detail .business{
    font-size: 15px;
    font-weight: 500;
}
.swiper-button-prev::after,
.swiper-button-next::after {
  display:none;
}
.swiper-pagination {
    width: 100%;
}
.swiper-pagination-bullet {
    opacity: 0.5;
    background-color: #FBB957!important;
}

.sp_wrap:hover{
    border: 2px solid #FBB957;
    transition: all 0.1s;
}
/* video */
#replay .video_wrap{
    margin: 3% 0;
    text-align: center;
}
/* live */
#live{
    margin-top: 10%;
}
#live .video_wrap{
    margin: 3% 0;
    text-align: center;
}

/* greeting */
.intro_greetings{
    width: 90%;
    margin: 0 auto;
    margin-bottom: 5%;
}
.greetings_text{
    margin-top: 4%;
    color: #0c0c0c;
    text-align: center;
    word-break:keep-all;
}
.greetings_text p{
    font-size: 1.2rem;
    font-weight: 500;
}
.greetings_text span{
    font-weight: 700;
}
.hoste_logo{
    width: 40%;
    margin: 5% auto;
    display: flex;
    gap: 5%;
    justify-content: center;
    align-items: center;
}
.hoste_logo img{
    width: 100%;
}