/* 选项卡导航样式 */
.nav-tabs {
    border-bottom: 1px solid #ddd;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.nav-tabs > li {
    margin-bottom: -1px;
    margin-right: 130px;
}

.nav-tabs > li:last-child {
    margin-right: 0;
}

.nav-tabs > li > a {
    color: #555;
    border: 1px solid transparent;
    border-radius: 4px 4px 0 0;
    padding: 8px 15px;
    font-size: 2.4rem;
    transition: all 0.3s ease;
    line-height: 1.2;
}

.nav-tabs > li > a:hover {
    background-color: #eee;
    border-color: #eee #eee #ddd;
}

.nav-tabs > li.active > a,
.nav-tabs > li.active > a:hover,
.nav-tabs > li.active > a:focus {
    color: #555;
    background-color: #fff;
    border: 1px solid #ddd;
    border-bottom-color: transparent;
}

/* 选项卡内容样式 */
.tab-content {
    padding: 15px 0;
    position: relative;
}

.tab-pane {
    opacity: 0;
    display: none;
    transition: all 0.3s ease;
}

.tab-pane.active {
    opacity: 1;
    display: block;
}

/* 淡入动画 */
.tab-pane.fade-in {
    animation: fadeIn 0.3s ease forwards;
}

/* 淡出动画 */
.tab-pane.fade-out {
    animation: fadeOut 0.3s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}