.nav-main {
    padding: 0 3rem;
    background-color: #ffffff;
    box-shadow: rgba(0, 0, 0, 0.15) 1.95px 1.95px 2.6px;
}


.sm-menu {
    border-radius: 0px;
    border: 0px;
    top: 97%;
    box-shadow: rgba(173, 173, 173, 0.2) 1px 3px 4px 0px;
    margin: 0;
    padding: 2rem 3rem;
}

/* megamenu 動作設定 */
@media (min-width: 1200px) {
    .megamenu {
        width: 100%;
        -webkit-transition: all .4s ease-in-out;
        transition: all .4s ease-in-out;
        transform: rotateX(90deg);
        transform-origin: top;
        opacity: 0;
        display: block;
        border-bottom: 1px solid #212121;
    }

    .show .megamenu {
        opacity: 1;
        transform: rotateX(0deg);
        transform-origin: top;
    }
}

/* megamenu 動作設定 end */

.nav-main .main .nav-link {
    padding: 20px 15px;
    color: #212121;
    transition: 0.2s;
}

.nav-main .main .nav-link:hover,
.nav-main .main .nav-link:focus {
    color: var(--sub-colorC);
    font-weight: 500;
}


.nav-signup {
    position: relative;
    display: flex;
    background-image: linear-gradient(120deg, #43e8ed 0%, #2454ff 100%);
    padding: 20px 15px;
    color: #ffffff;
    transition: all 0.3s ease-in;
}

.nav-signup:hover {
    color: #2cf7a6;
}

.nav-signup>i {
    transition: transform 0.3s ease-in;
}

.nav-signup:hover>i {
    transform: translateX(5px);
}

.nav-lang {
    display: inline-block;
}

.nav-signupX {
    position: relative;
    display: flex;
    background-image: linear-gradient(120deg, #9aafaf 0%, #585c69 100%);
    padding: 20px 15px;
    color: #ffffff;
    transition: all 0.3s ease-in;
}

/* ====================================================
# 報名按鈕提示框
====================================================*/
.balloon-area {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.balloon {
    position: absolute;
    padding: 7px 20px;
    margin-top: -6px;
    color: var(--main-colorM);
    font-weight: 700;
    background: #fff;
    border: 3px solid var(--main-colorM);
    box-sizing: border-box;
    border-radius: 25px;
    z-index: 3;
    box-shadow: rgba(0, 0, 0, 0.16) 0px 1px 4px;
}

.balloon::before {
    content: "";
    position: absolute;
    top: -20px;
    left: 50%;
    margin-left: -15px;
    border: 10px solid transparent;
    border-bottom: 10px solid #fff;
    z-index: 2;
}

.balloon p {
    margin: 0;
    padding: 0;
    font-size: 15px;
    line-height: 1.5;
}

.balloon:after {
    content: "";
    position: absolute;
    top: -26px;
    left: 50%;
    margin-left: -17px;
    border: 12px solid transparent;
    border-bottom: 12px solid var(--main-colorM);
    z-index: 1;
}


/* ====================================================
# nav-lang 語言切換按鈕
====================================================*/

.nav-lang span {
    font-size: 15px;
    border: 1px solid #a0a6b2;
    color: #a0a6b2;
    padding: 9px;
    border-radius: 50%;
}

.nav-lang .zh {
    font-size: 14px;
    padding: 10px 5px;
}

.nav-lang.active span {
    border: 1px solid #212121;
    color: #212121;

}


@media (max-width: 1200px) {
    .nav-main {
        padding: 0;
    }

    .nav-main .navbar-brand {
        padding-left: 20px;
    }

    .nav-main .main-toggler {
        margin-right: 20px;
    }

    .nav-signup {
        display: block;
    }

    .balloon {
        position: relative;
    }
}




/* ====================================================
# megamenu-li
====================================================*/

.megamenu-li {
    position: static;
}

.megamenu-li .dropdown-toggle::after {
    font-family: 'bootstrap-icons';
    content: "\F282";
    border: none;
    vertical-align: middle;
    font-size: 14px;
    -webkit-transition: all 0.3s ease-in-out;
    -moz-transition: all 0.3s ease-in-out;
    transition: all 0.3s ease-in-out;
}


.megamenu-li .dropdown-toggle.is-expanded::after {
    transform: rotate(180deg);
}


.megamenu .dropdown-item {
    /* white-space: pre-wrap; */
}

.megamenu-title {
    font-size: 1.3rem;
    font-weight: 400;
    /*    letter-spacing: 0.05rem;*/
    /*    writing-mode: vertical-rl;*/
}

.comingsoon-item {
    color: #999999;
    padding: 0.25rem 1.5rem;
    display: block;
    cursor: pointer;
}

.megamenu .comingsoon {
    color: #999999;
    cursor: not-allowed;
}

.megamenu .comingsoon span {
    font-size: 12px;
    margin-left: 4px;
    border: 1px #AAAAAA solid;
    padding: 2px 3px;
}

@media (max-width: 576px) {
    .megamenu-title {
        writing-mode: inherit;
    }
}


.megamenu a.dropdown-item {
    overflow: hidden;
    box-shadow: inset 0 0 0 0 #1c33a0;
    transition: color .3s ease-in-out, box-shadow .3s ease-in-out;
}

.megamenu a.dropdown-item:hover {
    color: #ffffff;
    box-shadow: inset 400px 0 0 0 #1c33a0;
}

.megamenu a.comingsoon:hover {
    color: #999999;
    box-shadow: 0 0 0 0 #666666;
}

.d-about,
.d-agenda,
.d-expo,
.d-act {
    border-top: 1px solid var(--lightgray);
    border-bottom: 1px solid var(--lightgray);
}

/* 狀態備註 */

.soon {
    color: var(--lightgray);
}

.inv {
    color: var(--main-colorM);
}

/* ====================================================
# main-toggler 
====================================================*/
.main-toggler.navbar-toggler {
    border-color: #177DB1;
}

.main-toggler .navbar-toggler-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(23,125,177, 1)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 8h24M4 16h24M4 24h24'/%3E%3C/svg%3E");
}


/*====================================================
# d-about 大會指南
==================================================== */
.d-about {
    background-color: #e9f6f6;
}

.d-about .dropdown-item {
    white-space: normal;
}

.d-about .megamenu-title {
    color: #609622;
}


/*====================================================
# d-agenda 議程
==================================================== */
.d-agenda {
    background-color: #d5e9fc;
}

.d-agenda .megamenu-title {
    color: #005DB7;
}


/*====================================================
# d-expo 展覽
==================================================== */
.d-expo {
    background-color: #f8fade;
}

.d-expo .megamenu-title {
    color: #A3A718;
}



/*====================================================
# d-act 活動
==================================================== */
.d-act {
    background-color: #fff2f2;
}

.d-act .megamenu-title {
    color: #B7367B;
}


/*====================================================
# 小板設定
==================================================== */

@media (max-width: 768px) {

    .megamenu-title,
    .mb-none {
        display: none;
    }


}

@media (min-width: 768px) {
    .mb-display {
        display: none;
    }
}


/*====================================================
# nav banner --20231117新增
==================================================== */

.nav-a {
    border: 1px solid #efefef;
}

.nav-a img {
    display: block;
    width: 100%;
}


@media (max-width:700px) {
    .nav-a {
        display: none;
    }
}