@charset "utf-8";
@import url('reset.css');

body {
    background: #fbfbfb;
    font-family: "微軟正黑體", "Microsoft JhengHei", arial;
    padding-top: 80px;
}

/* header */
header {
    width: 100%;
    height: 80px;
    background: #fbfbfb;
    text-align: center;
    position: fixed;
    padding: 26px 0;
    border-bottom: 1px solid #ccc;
    box-sizing: border-box;
    left: 0;
    top: 0;
    z-index: 999;
}

/* logo */
#logo {
    width: 300px;
    height: 28px;
    background: url('../images/logo.svg') center no-repeat;
    background-size: 100% auto;
    text-indent: -9999px;
    display: inline-block;
}

/* nav */
#nav {
    display: flex;
    align-items: center;
    position: absolute;
    top: 0;
    right: 0;
}

#nav li {
    margin-left: 40px;
}

#nav li a {
    color: #333;
    font-size: 14px;
    font-weight: bold;
    display: block;
}

#nav li .nav-btn {
    width: 80px;
    height: 80px;
    text-indent: -9999px;
    border-left: 1px solid #ccc;
    padding: 31px 28px;
    box-sizing: border-box;
}

#nav li .nav-btn::before,
#nav li .nav-btn::after {
    content: "";
    width: 24px;
    height: 2px;
    display: block;
    background: #000;
    transition: all .3s;
    position: relative;
    bottom: 1px;
}

#nav li .nav-btn hr {
    width: 24px;
    height: 2px;
    display: inline-block;
    border: none;
    background: #000;
    margin: 5px 0;
    opacity: 1;
    transition: all .3s;
}

#nav li .nav-btn.active {
    position: relative;
}

#nav li .nav-btn.active hr {
    opacity: 0;
}

#nav li .nav-btn.active::before {
    transform: rotate(-45deg);
    position: absolute;
    left: 28px;
    top: 39px;
}

#nav li .nav-btn.active::after {
    transform: rotate(45deg);
    position: absolute;
    left: 28px;
    top: 39px;
}

#main-nav {
    display: none;
    width: 100%;
    background: #fbfbfb;
    text-align: center;
    position: absolute;
    top: 101%;
    left: 0;
    z-index: 998;
    border-bottom: 1px solid #ddd;
}

#main-nav li {
    display: inline-block;
    padding: 0 20px;
}

#main-nav li a {
    height: 60px;
    color: #333;
    font-size: 16px;
    font-weight: bold;
    display: block;
    padding: 22px 0;
    border-bottom: 0 solid #fff;
    box-sizing: border-box;
    transition: all .1s;
}

#main-nav>li>a:hover,
#main-nav li a.active {
    border-bottom: 4px solid #000;
}

#main-nav li .sub-nav {
    display: none;
    width: 100%;
    background: #f4f3ee;
    text-align: center;
    position: absolute;
    top: 100%;
    left: 0;
}

#main-nav li .sub-nav li {
    display: inline-block;
    padding: 0 20px;
}

#main-nav li .sub-nav li a {
    height: auto;
    color: rgba(0, 0, 0, .6);
    font-size: 14px;
    font-weight: normal;
    transition: all .3s;
}

#main-nav li .sub-nav li a:hover {
    color: rgba(0, 0, 0, 1);
}

#main-nav .mb {
    display: none;
}

/* gotop */
#go-top {
    width: 60px;
    background: rgba(255, 255, 255, .5);
    color: #000;
    font-size: 14px;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 50%;
    padding: 22px 0;
    box-sizing: border-box;
    position: fixed;
    right: 10px;
    bottom: 50px;
    z-index: 999;
}

/* footer */
footer {
    background: #333;
    color: #fff;
    font-size: 14px;
    font-weight: normal;
    letter-spacing: 1px;
    padding: 20px 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

footer::before {
    content: "";
    width: 80px;
    height: 24px;
    background: url('../images/logo3.svg');
    background-size: 100% auto;
    display: block;
    margin-right: 10px;
}

@media screen and (max-width: 1200px) {
    header {
        text-align: left;
        padding-left: 2.5%;
    }
}

@media screen and (max-width: 767px) {
    #nav .pc {
        display: none;
    }

    #main-nav,
    #main-nav li .sub-nav {
        padding: 10px 0;
    }

    #main-nav .mb {
        display: inline-block;
    }

    #main-nav li a {
        height: 36px;
        padding: 10px 0;
    }

    #main-nav li .sub-nav li a {
        height: auto;
        font-size: 12px;
        padding: 5px 10px;
    }
}

@media screen and (max-width: 479px) {
    body {
        padding-top: 60px;
    }

    header {
        height: 60px;
        padding: 16px 0 16px 2.5%;
    }

    #logo {
        width: 220px;
    }

    #main-nav,
    #main-nav li .sub-nav {
        text-align: left;
    }

    #main-nav li {
        width: 32%;
        text-align: center;
        box-sizing: border-box;
    }

    #main-nav li .sub-nav li {
        padding: 0;
    }

    #nav li .nav-btn {
        width: 60px;
        height: 60px;
        padding: 22px 18px;
    }

    #nav li .nav-btn.active::before,
    #nav li .nav-btn.active::after {
        left: 18px;
        top: 29px;
    }
}