/* 右侧瀑布流区域（CSS 多列布局） */
        .portfolio-container {
            flex: 1;
            min-width: 260px;
            background: var(--light-bg);
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 24px;}
        .portfolio-header {
            margin-bottom: 24px;
            border-left: 5px solid var(--accent-brown);
            padding-left: 16px;}
        .portfolio-header h3 {
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--text-dark);}
        /* 瀑布流核心样式 */
        .masonry {
            column-count: 3;
            column-gap: 24px;}
        .masonry-item {
            break-inside: avoid;
            margin-bottom: 24px;
            background: #FAFBF1;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.25s, box-shadow 0.25s;
            border: 1px solid var(--border-light);}
        .masonry-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent-brown);}
        .masonry-img {
            width: 100%;
            display: block;
            background-color: #E2DCD0;}
        .masonry-info {
            padding: 14px 12px;}
        .masonry-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-dark);}
        .masonry-info p {
            font-size: 0.8rem;
            color: var(--text-gray);
            margin-bottom: 6px;}
        .masonry-tag {
            display: inline-block;
            background: var(--primary-warm);
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 0.7rem;
            color: var(--accent-dark);}
        /* 分页 */
        .pagination {
            margin-top: 40px;
            text-align: center;}
        .pagination a {
            display: inline-block;
            padding: 8px 14px;
            margin: 0 4px;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            color: var(--text-dark);
            transition: 0.2s;}
        .pagination a.active, .pagination a:hover {
            background: var(--accent-brown);
            color: white;
            border-color: var(--accent-brown);}

        /* 移动端菜单折叠及瀑布流列数响应式 */
        @media (max-width: 992px) {
            .two-column-layout {
                flex-direction: column;}
            .sidebar-menu {
                flex: auto;
                width: 100%;}
            .menu-content {
                display: none;}
            .menu-content.open {
                display: block;}
            .masonry {
                column-count: 2;
                column-gap: 20px;}
        }
        @media (min-width: 993px) {
            .sidebar-header {
                cursor: default;}
            .sidebar-header .toggle-icon {
                display: none;}
            .menu-content {
                display: block !important;}
        }
        @media (max-width: 640px) {
            .masonry {
                column-count: 1;
                column-gap: 16px;}
            .portfolio-container {
                padding: 16px;}
        }/* CSS Document */