.menu_open {
    position: fixed;
    /*background: #15395a;*/
    z-index: 2000;
    width: 80px;
    height: 20px;
    left: auto;
    right: 0;
    top: 10px;
    bottom: auto;
    opacity: 0;
    transition: opacity 0.5s;
    text-align: center;
    opacity: 1;
    transition: opacity 2.5s, top 1.5s;
}

.this_open .menu_open {
    /*background: rgba(0, 174, 239, 0);*/
}



.this_open { height: 100%; overflow: hidden; }

@media (min-width: 992px) {

    .menu_open {
        top: 15%;
        height: 80px;
    }

    .this_open .menu_open {
        top: 30%;
    }
}


@media (min-width: 1200px) {

    .menu_open {
        top: 50%;
        transform: translateY(-50%);
        left: -10px;
    }

    .this_open .menu_open {
        top: 10%;
    }
}

@media (min-width: 1400px) {

    .menu_open {
        left: 30px;
    }

    .this_open .menu_open {
        top: 10%;
    }

    .menu_vline {
        position: fixed;
        top: 0;
        left: 80px;
        width: 0;
        height: 100vh;
        z-index: 2;
        /*border-left: 1px solid #000000;*/
        border-left: 1px solid rgba(208, 222, 142, 0.21);
    }

    .this_open .menu_vline {
        border-left: 1px solid rgba(208, 222, 142, 0.21);
    }

    .menu_vline {
        left: 120px;
    }
}

@media (min-width: 1530px) {
    .menu_open {
        left: 20px;
    }
    .menu_vline {
        left: 120px;
    }
}

@media (min-width: 1600px) {
    .menu_vline {
        position: fixed;
        top: 0;
        left: 80px;
        width: 0;
        height: 100%;
        border-left: 1px solid rgba(208, 222, 142, 0.21);
    }

    .this_open .menu_vline {
        border-left: 1px solid rgba(208, 222, 142, 0.21);
    }

    .menu_vline {
        left: 140px;
    }
}

/*body.Main_page .menu_open {
    display: block;
    transition: 1s;
    transform: perspective(1000px) translate3d(0, 0, 00px);
}*/

.this_open .nav_bg {
    opacity: 0;
    transition: 1s;
}

.nav_bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}


.this_open .menu_openc {
    overflow: inherit;
}

.best_nav {
    height: 80px;
    width: 50px;
    position: absolute;
    margin: 0 auto;
    right: 0;
    left: 0;
    top: 45%;
    cursor: pointer;
}

.best_nav .top {
    top: 0;
    animation: levitatetop 3s infinite;
    animation-timing-function: cubic-bezier(0.51, 0.55, 0.27, 0.7);
}

.this_open .top.line {
    transform: rotate(-45deg) translateX(8px);
    background: #bcd2de;
}

.best_nav .middle {
    top: 0;
    animation: levitatemid 2s infinite;
    animation-timing-function: cubic-bezier(0.51, 0.55, 0.27, 0.7);
}

.this_open .middle.line {
    opacity: 0;
    transition: 0.7s;
}

.best_nav .bottom {
    bottom: 0;
    animation: levitatebot 3s infinite;
    animation-timing-function: cubic-bezier(0.51, 0.55, 0.27, 0.7);
}

.best_nav .run {
    position: absolute;
    top: 32px;
    height: 1px;
    width: 20px;
    background-color: #bcd2de;
    animation: runline 3s infinite;
    animation-timing-function: cubic-bezier(0.51, 0.55, 0.27, 0.7);
    display: none;
}

.this_open .bottom.line {
    transform: rotate(45deg) translateX(-8px);
    background: #bcd2de;
}

.best_nav .circle {
    width: 7px;
    height: 7px;
    position: absolute;
    top: -35px;
    right: 0;
    border-radius: 100%;
    border: 1px solid #bcd2de;
    animation: rotation 2.5s linear 0s infinite;
    background: #bcd2de;
}

.best_nav .circle:after {
    content: " ";
    width: 3px;
    height: 3px;
    position: absolute;
    top: -15px;
    right: -5px;
    border-radius: 100%;
    border: 1px solid var(--base_color);
}

.this_open .best_nav .circle {
    background-color: #3d66a3;
    border: 1px solid #3d66a3;
}

.this_open .best_nav .circle:after {
    background-color: #3d66a3;
    border: 1px solid #3d66a3;
}


.m_tt {
    transition: 0.8s;
}

.m_tt {
    text-align: center;
    color: #00729d;
    bottom: 0;
    left: 0;
    right: 0;
    margin-bottom: 100%;
    font-size: 1.8rem;
    position: absolute;
    line-height: 1.2;
    margin-top: 50%;
    font-size: 0.9em;
}

.this_open .m_tt {
    opacity: 0;
}

.menu_cover {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: -150%;
    z-index: 1000;
    background: var(--base_color);
    display: block;
    transition: 1s 0s;
}

.this_open .menu_cover {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    background: var(--base_color);
    display: block;
    transition: 1s 0s;
}

.this_open .menu_cover:before {
    transition: 2s;
    transform: translate3d(125%, 0, 0);
    z-index: 10;
}

.menu_cover:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 174, 239, 0.5);
    transition: 4.5s;
    transform: translate3d(-100%, 0, 0);
}

.best_nav .line {
    position: relative;
    width: 2px;
    height: 35px;
    margin: 10px 0;
    background-color: #00729d;
    display: inline-block;
    transition: 0.7s;
}


#menuList dt a { display: block; color: #fff; padding: 8px 0; position: relative; }

#menuList dd a { display: block; color: #fff; padding: 10px 0; position: relative; }

#menuList a:after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    top: 0;
    background: #3d66a3;
    left: 0;
    filter: blur(30px);
    z-index: -1;
    opacity: 0;
    width: 0;
    transition: 0.8s all;
    border-radius: 5px;
}

#menuList a:hover:after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    top: 0;
    background: #3d66a3;
    left: 0;
    filter: blur(10px);
    z-index: -1;
    opacity: 0.3;
    width: 100%;
    transition: 0.5s all;
}

#menuList a.active:after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    top: 0;
    background: #3d66a3;
    left: 0;
    filter: blur(10px);
    z-index: -1;
    opacity: 0.3;
    width: 100%;
    transition: 0.5s all;
}

#menuList a:hover {
    color: #fff;
}

@keyframes navuidh {
    0% {
        opacity: 1;
        transform: perspective(1000px) translate3d(0, 0, 0px);
        filter: blur(0);
    }

    50% {
        opacity: 0;
        transform: perspective(1000px) translate3d(0, 0, 250px);
        filter: blur(0px);
    }

    100% {
        opacity: 0;
        filter: blur(0);
    }

}

@keyframes rotation {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes runline {
    0% {
        left: -30px;
        opacity: 1;
    }

    30% {
        left: 100px;
        top: 32px;
        opacity: 1;
    }

    50% {
        top: 60px;
        left: 100px;
    }

    60% {
        top: 60px;
        left: 100px;
    }

    70% {
        left: -50px;
        opacity: 1;
        top: 60px;
    }

    100% {
        left: -50px;
        opacity: 1;
        top: 32px;
    }
}

@keyframes levitatetop {
    0% {
        top: -5px;
    }

    50% {
        top: 5px;
    }

    100% {
        top: -5px;
    }
}

@keyframes levitatemid {
    0% {
        top: 0px;
    }

    50% {
        top: 0;
    }

    100% {
        top: 0px;
    }
}

@keyframes levitatebot {
    0% {
        bottom: 5px;
    }

    50% {
        bottom: -5px;
    }

    100% {
        bottom: 5px;
    }
}