:root {
    --top-banner-height: 4rem;
    font-family: Arial,sans-serif,'Times New Roman',serif;
}

body {
    margin: 0;
    color: #000;
    font-size: 1rem;
    font-family: Arial,sans-serif,'Times New Roman',serif;
}
/*
@media (min-width: 1600px) {
    .container, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl .container-xxxl {
        max-width: 1550px;
    }
}*/
.top-icon {
    border: 1px solid #fff;
    border-radius: 100%;
    margin-left: 10px;
    width: 24px;
    height: 24px;
    line-height: 24px;
    position: relative;
    padding: 0.2rem;
    font-size: 10px;
}

    .top-icon a,.top-icon a:link {
        display: -ms-flexbox;
        display: flex;
        width: 100%;
        height: 100%;
        -ms-flex-align: center;
        align-items: center;
        -ms-flex-pack: center;
        justify-content: center;
        -webkit-text-decoration: none;
        text-decoration: none;
        color:#fff;
    }

    .m-nav {
        background-color: #002046;
    }

.top-nav-con {
    background-color: #F2F2F2;
}

#mobile-menu {
    background-color: #002046;
}

    #mobile-menu .submenu {
        position: inherit;
        color: #fff;
    }

    #mobile-menu .nav-link, #mobile-menu .nav-link :link {
        color: #fff;
    }

    #mobile-menu .nav-item .dropdown-item {
        line-height: 2.2rem;
    }

    .top-banner {
        background-color: #002046;
        color: #fff;
        z-index: 999;
    }

    .top-banner a, .top-banner a:link {
        color: #fff;
        text-decoration: none;
        text-align: left;
    }

    .top-banner .breadcrumb-item + .breadcrumb-item::before {
        float: left;
        color: #fff;
        padding-left: 0px;
    }

    .top-banner .logo {
        background-image: url(../images/logo.png);
        height: var(--top-banner-height);
        background-size: auto 4.4rem;
        background-repeat: no-repeat;
        background-position-y: center;
        
    }

    .top-banner .pku-logo {
        background-image: url(../images/pku-logo.png);
        height: var(--top-banner-height);
        background-size: auto 4.4rem;
        background-repeat: no-repeat;
        background-position-y: center;
        
    }

    .top-banner .no-link {
        cursor: text;
    }


.bottom-banner {
    background-color: #002046;
    color: #fff;
    margin-top: 2rem;
    padding-top: 1.2rem;
    padding-bottom: 1.2rem;
}

    .bottom-banner .copyright {
        text-align: center;
        font-size: 0.8rem;
    }


.big-banner {
    height: calc(100vh - var(--top-banner-height));
    padding: 0px;
    /* background-image: url(../demo/banner-1.jpg);
    background-repeat:no-repeat;
    background-size:cover;*/
}

    .big-banner .carousel {
        height: 100%;
        width: 100%;
        margin: 0px;
    }

        .big-banner .carousel .carousel-inner {
            height: 100%;
        }

            .big-banner .carousel .carousel-inner .carousel-item {
                width: 100%;
                height: 100%;
                /*transform: translate3d(0, 0, 0);
                will-change: transform;*/
                transition: transform .6s ease-in-out,-webkit-transform .6s ease-in-out
            }

                .big-banner .carousel .carousel-inner .carousel-item .carousel-img {
                    width: 100%;
                    height: 100%;
                    background-position: center center;
                    background-size: cover;
                }

        .big-banner .carousel .carousel-indicators a, .big-banner .carousel .carousel-indicators a:link {
            text-decoration: none;
        }

        .big-banner .carousel .home_carousel-caption {
            bottom: 1rem;
            left: 5%;
            text-align: left;
            padding-left: 1rem;
            padding-right: 1rem;
            right: 5%;
            font-size: 1.5rem;
            background-color: rgba(00,00,00,0.4);
        }

        .big-banner .carousel .n_carousel-indicators {
            margin-left: 70%;
            margin-right: 0%;
            bottom: -0.5rem;
        }
        /* .big-banner .carousel .n_carousel-indicators .bi {
                position: relative;
                top: 1px;
                display: inline-block;
                font-style: normal;
                font-weight: normal;
                line-height: 1;
                -webkit-font-smoothing: antialiased;
                -moz-osx-font-smoothing: grayscale;
            }*/
        .big-banner .carousel .carousel-indicators li {
            height: 1.5rem;
            flex: none;
            text-indent: inherit;
            color: #fff;
            background-color: transparent;
            list-style: none;
        }

    .big-banner .no-link {
        cursor: text;
    }

.m-banner {
    height: calc(60vw);
    width: calc(100vw);
    padding: 0px;
}

    .m-banner .carousel {
        width: 100%;
        height: 100%;
        margin: 0px;
    }

        .m-banner .carousel .carousel-inner {
            height: 100%;
        }

            .m-banner .carousel .carousel-inner .carousel-item {
                width: 100%;
                height: 100%;
                /*transform: translate3d(0, 0, 0);
                will-change: transform;*/
                transition: transform .6s ease-in-out,-webkit-transform .6s ease-in-out
            }

                .m-banner .carousel .carousel-inner .carousel-item .carousel-img {
                    width: 100%;
                    height: 100%;
                    background-position: center center;
                    background-size: cover;
                }


        .m-banner .carousel .home_carousel-caption {
            bottom: 1rem;
            left: 5%;
            text-align: left;
            padding-left: 1rem;
            padding-right: 1rem;
            right: 5%;
            font-size: 1.5rem;
            background-color: rgba(00,00,00,0.4);
        }

        .m-banner .carousel .n_carousel-indicators {
            margin-left: 70%;
            margin-right: 0%;
            bottom: -0.5rem;
        }

        .m-banner .carousel .carousel-indicators li {
            height: 1.5rem;
            flex: none;
            text-indent: inherit;
            color: #fff;
            background-color: transparent;
            list-style: none;
        }



.navbar {
    list-style: none;
}

.float-nav {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0));
    width: 100%;
    height: 85px;
    position: absolute;
    display: flow;
    top: 4rem;
    z-index: 9999;
}

    .float-nav .nav-link {
        padding: 0.5rem;
        padding-top: 0.6rem;
        padding-bottom: 0.6rem;
        color: #ffffff;
        white-space: nowrap;
        text-align: left;
    }

.dropdown-menu {
    background-color: #414141;
    opacity: 0.8;
    --bs-border-radius: 0;
}

    .dropdown-menu .dropdown-item {
        background-color: #414141;
        color: #fff;
        font-size: 1rem;
    }

        .dropdown-menu .dropdown-item:hover {
            color: #fff;
            font-weight: bold;
        }

.dropdown:hover .dropdown-menu {
    display: block;
}

.panel-list {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.home-part-title {
    font-size: 2rem;
    padding-left: 1rem;
    color: rgb(50, 51, 52);
    font-family: 苹方, 微软雅黑;
    font-weight: bold;
    line-height: 3.7rem;
    margin-bottom: 1rem;
}

    .home-part-title .more {
        display: inline-block;
        font-size: 0.8rem;
        vertical-align: top;
        padding-left: 1rem;
        text-decoration:  underline;
        font-weight: 400;
        color: #004ba3;
    }

        .home-part-title .more::before {
            content: "";
            margin-right: 0.5rem;
            font-size: 0.6rem;
            vertical-align: top;            
            border-left:solid 1px #999;
        }

.grey-title {
    background-color: #f2f2f2;
}

.view-more {
    display: inline-block;
    font-size: 0.8rem;
    vertical-align: top;
    padding-left: 1rem;
    text-decoration: underline;
    font-weight: 400;
    line-height: 2rem;
}

    .view-more a, .view-more a :link {
        text-decoration: underline;
        color: #004ba3;
    }

.news-item {
    height: 100%;
    overflow: hidden;
}

    .news-item .title {
        padding: 1rem;
        padding-top: 0.5rem;
    }

        .news-item .title a {
            text-decoration: none;
            color: #000;
            line-height: 1.5rem;
            font-family: SourceSansPro-Semibold;
            /*font-weight: 500;*/
        }

            .news-item .title a:link {
                color: #000;
            }



    .news-item .img-container {
        position: relative;
        display: inline-block;
    }

        .news-item .img-container::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.3); /* 30%透明度黑色遮罩 */
            opacity: 0;
            transition: opacity 0.3s;
        }

    .news-item:hover .img-container::after {
        opacity: 1;
    }

    .news-item:hover .title a {
        color: #2F72A8;
    }

    .news-item .photo {
        background-repeat: no-repeat;
        background-position: center center;
        background-size: contain;

    }
        .news-item .photo::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            /*background: rgba(255,0,0,0.3);*/
            border:1px solid #d9d9d9;
            pointer-events: none;
        }
        /*.news-item:hover img {
        transition-delay: 0.3s;
        transform: scale(1.05);
        transition: all 0.5s ease-out 0s;
    }*/
        .event-item {
            padding-left: 1rem;
            margin-left: 1rem;
        }

    .event-item::before {
        content: "";
        position: absolute;
        left: 30px;
        top: 0;
        width: 1px;
        height: 100%;
        display: block;
        border-left: 1px dashed #ddd;
    }

    .event-item .date {
        padding-left: calc(1rem - 6px);
        font-size: 0.8rem;
        color: #999;
    }



    .event-item .title {
        padding-left: 1rem;
        padding-top: 0.5rem;
        padding-bottom: 12px;
        line-height: 0;
        position: relative;
    }

        .event-item .title::before {
            content: "";
            position: absolute;
            width: 8px;
            height: 8px;
            top: 1rem;
            left: -5px;
            display: block;
            border: 1.5px solid #999;
            border-radius: 50%;
            background-color: #fff;
            z-index: 997;
        }

        .event-item .title a, .event-item .title a:link {
            color: #000;
            text-decoration: none;
            font-size: 1rem;
            line-height: 1.5rem;
            display: -webkit-box;
            overflow: hidden;
            white-space: normal !important;
            text-overflow: ellipsis;
            word-wrap: break-word;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical
        }

    /*.event-item:not(:last-child) .title::before {
        content: "";
        position: absolute;
        left: 5px;
        top: 0;
        width: 1px;
        height: 100%;
        display: block;
        border-left: 1px dashed #ddd;
    }*/

    /*   .event-item .dot {
        display: inline-block;
        width: 8px;
        height: 8px;
        border: 1.5px solid #000;
        border-radius: 50%;
        box-sizing: border-box;
        margin-left:4px;
    }*/

    .event-item:hover {
    }

        /* .event-item:hover .dot {
            border: 1.5px solid #2F72A8;
            width:12px;
            height:12px;
        }*/
        .event-item:hover .title::before {
            border: 1.5px solid #2F72A8;
            width: 10px;
            height: 10px;
            top: calc(1rem - 1);
            left: -6px;
        }

        .event-item:hover .title a, .event-item:hover .title a:link {
            color: #2F72A8
        }

.program-item {
}

    .program-item .title {
        padding-top: 0.8rem;
        /*padding-bottom: 1rem;*/
        min-height: 4rem;
    }

        .program-item .title a {
            text-decoration: none;
            color: #000;
            line-height: 1.5rem;
            font-family: SourceSansPro-Semibold;
            font-weight: 550;
        }

            .program-item .title a:link {
                color: #000;
            }

            .program-item .title a:hover {
                color: #2F72A8;
            }

    .program-item .detail {
    }

        .program-item .detail a {
            font-size: 0.75rem;
            text-decoration: none;
            color: #333;
            display: -webkit-box;
            overflow: hidden;
            white-space: normal !important;
            text-overflow: ellipsis;
            word-wrap: break-word;
            -webkit-line-clamp: 10;
            -webkit-box-orient: vertical
        }

.program-list {
    background-color: #f2f2f2;
    padding-bottom: 1rem;
}


.document-nav {
    color: #696974;
    padding-top: 1rem;
}

    .document-nav .breadcrumb-item + .breadcrumb-item::before {
        color: #D6D6D6;
    }

    .document-nav a, .document-nav a:link {
        font-size: 1rem;
        text-decoration: none;
        color: #002046;
    }

    .document-nav .breadcrumb .breadcrumb-item:nth-child(n+2) a, .document-nav .breadcrumb .breadcrumb-item:nth-child(n+2) a:link {
        color: #696974;
    }

.documnet-nav-new {
    color: #696974;
    padding-top: 1rem;
    padding-bottom:1rem;
    font-size:1rem;
}

    .documnet-nav-new span {
        color: #D6D6D6;
        padding-left: 0.5rem;
        padding-right:0.5rem;
    }
    .documnet-nav-new a, .documnet-nav-new a:link {
        text-decoration: none;
        color: #002046;
    }
        .documnet-nav-new a:nth-child(n+2) {
            color: #696974;
        }