.event_content {
    font-size: 1vw;
    color: #231815;
    line-height: 1.4;
    font-weight: 400;
    background-image: url(../img/bg-main.jpg);
    background-size: 100% auto;
/*    min-height: 1000px;*/
    padding-bottom: 1.6vw;
    position: relative;
}
.event_content:after {
    position: absolute;
    content: '';
    background-image: url(../img/deco-01.png);
    background-size: contain;
    aspect-ratio: 346/226;
    width: 18vw;
    right: 0;
    bottom: 0;
}
.event_content * {
    font-family: "Noto Sans TC", sans-serif;
}
.event_content *, .event_content *:before, .event_content *:after {
    box-sizing: border-box;
	 -webkit-box-sizing: border-box;
}
.event_content img {
    vertical-align: bottom;
}
.event_content .light {
    color: #d13e2b;
}
.flex {
    display: flex;
}
.full {
    width: 100%;
}
.flex_1 {
    flex: 1;
}
.max100 {
    max-width: 100%;
}
.r {
    position: relative;
}
.tc {
    text-align: center;
}
.hide {
/*    display: none;*/
/*    opacity: 0;*/
}
.footer {
/*    padding-bottom: 50px;*/
}
.link1 {
    text-decoration: underline;
    color: #6347d0;
    font-weight: 400;
}
.link2 {
    text-decoration: underline;
    color: currentColor;
}
.btn {
    cursor: pointer;
    background-size: contain;
    margin: auto;
    background-color: transparent;
    display: block;
}
.btns_wrap {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 1vw;
    padding-bottom: 1vw;
}
.btns_wrap img {
    height: 5.625vw; 
}
.box1 {
    padding: 4.3vw 3.5vw;
    width: 69vw;
    background: #f5f2e8;
    margin: auto;
    position: relative;
}
.box2 {
    position: relative;
}
.box2_in {
    background: #fff;
    border: 3px solid rgb(35, 24, 21);
    padding: 3.6vw 1.5vw;
    position: relative;
    top: -1.6vw;
}
.box2_tit {
    margin: auto;
    width: 29vw;
    background: #fdd10d;
    border: 3px solid rgb(35, 24, 21);
    text-align: center;
    height: 3.2vw;
    position: relative;
    left: 0;
    /* transform: translateX(-50%); */
    /* top: -1.6vw; */
    font-size: 1.6vw;
    font-weight: 900;
    z-index: 1;
}
.acc_btn {
    cursor: pointer;
    padding: 0 3.3vw;
}
.acc_btn:after {
    position: absolute;
    content: '';
    background-image: url(../img/icon-plus.png);
    background-size: contain;
    aspect-ratio: 1;
    width: 1.8vw;
    right: 0.8vw;
    top: 50%;
    transform: translateY(-50%);
}
.acc_wrap.open .acc_btn:after {
    background-image: url(../img/icon-minus.png);
}
.acc_con {
    display: none;
}
.box2_tit .txt {
    position: relative;
    display: inline-block;
    vertical-align: middle;
}
.tit_5g .txt:before {
    position: absolute;
    content: '';
    background-image: url(../img/icon-bat.png);
    background-size: contain;
    aspect-ratio: 31/53;
    width: 1.6vw;
    left: -2vw;
    top: 50%;
    transform: translateY(-50%);
}
.tit_HiNet .txt:before {
    position: absolute;
    content: '';
    background-image: url(../img/icon-ball.png);
    background-size: contain;
    aspect-ratio: 1;
    width: 2vw;
    left: -2.3vw;
    top: 50%;
    transform: translateY(-50%);
}
.box2 + .box2 {
     margin-top: 2vw; 
}
.upper-alpha {
    list-style: upper-alpha;
    margin-left: 2.5ch;
}
.event_content ol {
    margin-bottom: 0;
}
/* .event_content */


.pc {
    display: inherit;
}
.mo {
    display: none;
}

@media screen and (max-width: 768px) {
    .btns_wrap {
        padding: 3vw;
    }
    .btns_wrap img {
        height: 12vw;
    }
    .event_content {
        font-size: 3.7vw;
        background: #eae4d0;
        padding-bottom: 10vw;
    }
    .event_content:after {
        opacity: 0;
    }
    .box1 {
        width: 85vw;
    }
    .box2_tit {
        border-width: 2px;
        font-size: 4.2vw;
        height: 8.2vw;
        width: fit-content;
        margin: auto;
    }
    .acc_btn {
        padding: 0 10vw;
    }
    .acc_btn:after {
        width: 4.5vw;
        right: 3vw;
    }
    .tit_5g .txt:before {
        width: 4vw;
        left: -5vw;
    }
    .tit_HiNet .txt:before {
        width: 5.5vw;
        left: -7vw;
    }
    .box2_in {
        border-width: 2px;
        top: -4vw;
        padding: 8vw 4vw;
    }
    .box2 + .box2 {
        margin-top: 5vw;
    }
    .pc {
        display: none;
    }
    .mo {
        display: inherit;
    }
}