/* .header-top .header-info-item {
    width: auto;
    min-width: calc(100%/5);
} */
.header-top .header-info-item .content a{
    font-family: Sans-Serif;
}
.header-section .header-bottom .main-menu li a{
    font-size: 1.4em;
    font-weight: bolder;
    text-align: center;
}
.xf-header-hidden .multi-line-fade {
    position: relative;
    line-height: 1.5em;
    max-height: 4em;           /* 3行 * 1.5em */
    overflow: hidden;
}

.xf-header-hidden .multi-line-fade::after {
    content: "...";
    position: absolute;
    bottom: 0;
    right: 0;
    padding-left: 20px;
    color: #ffffff;
    /* background: linear-gradient(to right, transparent, rgb(149, 6, 6) 50%); */
}

/* 返回顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #84171d;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: red;
    transform: translateY(-5px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
}

.back-to-top:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.arrow {
    width: 20px;
    height: 20px;
    border-top: 3px solid white;
    border-right: 3px solid white;
    transform: rotate(-45deg);
    margin-top: 5px;
}
/* 响应式设计 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
}