/* 基础自定义样式 */
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* 导航栏活动状态 */
.nav-item.active {
    background-color: #EEF2FF; /* indigo-50 */
    color: #4F46E5; /* indigo-600 */
    font-weight: 600;
}

/* 页面切换逻辑 */
.page-section {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.page-section.active {
    display: block;
}

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

/* Vis-network 容器自适应 */
#dfa-network {
    width: 100%;
    height: 100%;
}