/* CSS Document */


        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;}

        body {
            font-family: 'Segoe UI', 'Roboto', 'Noto Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            background-color: #FAFBF1;
            color: #3A3A3A;
            line-height: 1.5;}

        :root {
            --primary-warm: #D7D1C1;
            --secondary-warm: #C4BCA8;
            --accent-brown: #9B7B5C;
            --accent-dark: #6B4E3A;
            --light-bg: #FFFFFF;
            --card-bg: #FFFFFF;
            --border-light: #E8E2D4;
            --text-dark: #3A3A3A;
            --text-gray: #6B5E4A;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 24px rgba(0, 0, 0, 0.08);
            --dropdown-shadow: 0 15px 30px -12px rgba(0, 0, 0, 0.2);}

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.2s ease;}
        .container_nav {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0px 24px;}
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 20px 24px;}

        /* ========= 头部（与主页一致） ========= */
        .site-header {
            background-color: var(--primary-warm);
            color: var(--text-dark);
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;}
        .header-top {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0,0,0,0.08);}
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;}
        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;}
        .logo-img {
            height: 60px;
            width: auto;}
        .logo-img img {
            height: 60px;
            width: auto;}
        .logo-text h1 {
            font-size: 1.4rem;
            font-weight: 600;
            letter-spacing: 1px;
            color: #3A3A3A;}
        .logo-text p {
            font-size: 0.75rem;
            opacity: 0.7;
            color: #5A4A38;}
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;}
        .search-btn {
            background: rgba(0,0,0,0.08);
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            font-size: 1.2rem;
            color: var(--text-dark);}
        .search-btn:hover {
            background: var(--accent-brown);
            color: white;
            transform: scale(1.05);}
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 30px;
            height: 24px;
            cursor: pointer;
            background: transparent;
            border: none;
            padding: 0;}
        .hamburger span {
            width: 100%;
            height: 2px;
            background-color: var(--text-dark);
            border-radius: 2px;}

              /* 桌面导航 */
        .desktop-nav {
            display: block;
            background: var(--light-bg);
            border-bottom: 1px solid var(--border-light);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 20px;
            justify-content: center;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
		 .main-nav ul ul{
            display: flex;
            list-style: none;
            gap: 0px;
            justify-content: center;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .main-nav li {
            position: relative;
        }
        .main-nav > ul > li > a {
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 0;
            display: inline-block;
            color: var(--text-dark);
            border-bottom: 2px solid transparent;
            transition: 0.2s;
            position: relative;
            white-space: nowrap;
        }
        .main-nav > ul > li > a i {
            margin-left: 6px;
            font-size: 0.7rem;
            transition: transform 0.2s ease;
        }
        .main-nav > ul > li:hover > a {
            color: var(--accent-brown);
            border-bottom-color: var(--accent-brown);
        }
        .main-nav > ul > li:hover > a i {
            transform: rotate(180deg);
        }
        
        /* 二级菜单：圆角10%，每行高度40px */
        .submenu {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            background: var(--light-bg);
            min-width: 220px;
            padding: 12px 0;
            border-radius: 10%;
            box-shadow: var(--dropdown-shadow);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.25s cubic-bezier(0.2, 0.9, 0.4, 1.1), visibility 0.25s, transform 0.2s ease;
            transform: translateY(-8px);
            z-index: 200;
            list-style: none;
            border: 1px solid var(--border-light);
        }
        .main-nav li:hover > .submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .submenu li {
            width: 100%;
        }
        .submenu a {
            display: block;
            padding: 10px 24px;
            line-height: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-dark);
            border-bottom: none;
            transition: all 0.2s;
            background: transparent;
        }
        .submenu a:hover {
            background: linear-gradient(90deg, #F5F2E9, #FFFFFF);
            color: var(--accent-brown);
            padding-left: 28px;
        }

        /* 移动端侧边菜单 */
        .mobile-menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.85);
            backdrop-filter: blur(8px);
            z-index: 2000;
            visibility: hidden;
            opacity: 0;
            transition: 0.3s;
        }
        .mobile-menu-overlay.active {
            visibility: visible;
            opacity: 1;
        }
        .mobile-menu-container {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100%;
            background: var(--primary-warm);
            box-shadow: -4px 0 20px rgba(0,0,0,0.2);
            padding: 80px 20px 30px;
            transition: right 0.3s ease;
            overflow-y: auto;
        }
        .mobile-menu-overlay.active .mobile-menu-container {
            right: 0;
        }
        .close-mobile-menu {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 28px;
            color: var(--text-dark);
            cursor: pointer;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: background 0.2s;
        }
        .close-mobile-menu:hover {
            background: rgba(0,0,0,0.1);
        }
        .mobile-nav-list {
            list-style: none;
        }
        .mobile-nav-list li {
            border-bottom: 1px solid rgba(0,0,0,0.1);
        }
        .mobile-nav-list a {
            display: block;
            padding: 14px 0;
            color: var(--text-dark);
            font-weight: 500;
        }
        .mobile-submenu {
            padding-left: 20px;
            display: none;
            list-style: none;
            margin-bottom: 8px;
        }
        .mobile-submenu.active {
            display: block;
        }
        .mobile-submenu a {
            padding: 10px 0;
            font-size: 0.9rem;
            opacity: 0.85;
        }
        .mobile-has-submenu > a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }
        .mobile-has-submenu .toggle-icon {
            font-size: 0.8rem;
            transition: transform 0.2s ease;
        }
        .mobile-has-submenu.open .toggle-icon {
            transform: rotate(180deg);
        }

        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: flex; }
        }
        @media (min-width: 769px) {
            .mobile-menu-overlay { display: none; }
        }
        @media (max-width: 1280px) {
            .main-nav ul { gap: 18px; }
        }
        @media (max-width: 1100px) {
            .main-nav ul { gap: 12px; }
            .main-nav > ul > li > a { font-size: 0.9rem; }
        }


        /* ========= Subbanner 图片效果 ========= */
        .subbanner {
            width: 100%;
            height: 200px;
            background-image: linear-gradient(135deg, rgba(155,123,92,0.8), rgba(107,78,58,0.8)), url(../images/subbanner1.jpg);
            background-size: cover;
            background-position: center 30%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-align: center;}
        .subbanner h2 {
            font-size: 2.5rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-shadow: 0 2px 8px rgba(0,0,0,0.3);}
        .subbanner p {
            font-size: 1rem;
            margin-top: 8px;
            opacity: 0.9;}
        @media (max-width: 768px) {
            .subbanner { height: 140px;}
            .subbanner h2 { font-size: 1.5rem;}
        }

        /* ========= 图片新闻页布局：左侧菜单 + 右侧图片网格 ========= */
        .page-content {
            padding: 40px 0;}
        .two-column-layout {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;}
        /* 左侧菜单栏（与列表页完全一致） */
        .sidebar-menu {
            flex: 0 0 300px;
            background: var(--light-bg);
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            align-self: start;}
        /* 栏目导航标题栏（可折叠） */
        .sidebar-header {
            background-image: linear-gradient(135deg, var(--accent-brown), var(--accent-dark));
            background-size: cover;
            background-position: center;
            padding: 16px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: background 0.2s;
            border-bottom: 1px solid var(--border-light);}
        .sidebar-header h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: white;
            letter-spacing: 1px;
            text-shadow: 0 1px 3px rgba(0,0,0,0.2);
            margin: 0;}
        .sidebar-header .toggle-icon {
            color: white;
            font-size: 1.2rem;
            transition: transform 0.2s;}
        .menu-content {
            display: block;}
        /* 树形菜单样式 */
        .tree-menu {
            list-style: none;
            padding: 8px 0;}
        .tree-menu li {
            list-style: none;
            margin: 0;
            padding: 0;}
        .tree-menu .menu-item {
            display: block;
            padding: 10px 20px;
            color: var(--text-dark);
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            position: relative;}
        .tree-menu .menu-item > span {
            display: flex;
            justify-content: space-between;
            align-items: center;}
        .tree-menu .menu-item:hover {
            background: #F5F2E9;
            color: var(--accent-brown);}
        .tree-menu .has-children > .menu-item {
            font-weight: 600;}
        .tree-menu .children {
            list-style: none;
            padding-left: 20px;
            display: none;}
        .tree-menu .children.open {
            display: block;}
        .tree-menu .toggle-icon {
            font-size: 0.7rem;
            transition: transform 0.2s;}
        .tree-menu .has-children.open > .menu-item .toggle-icon {
            transform: rotate(90deg);}
        .tree-menu .children .children {
            padding-left: 20px;}
        .tree-menu .menu-item.active {
            background: var(--primary-warm);
            color: var(--accent-brown);
            border-left: 3px solid var(--accent-brown);}

        /* 右侧图片网格区域 */
        .image-grid-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;}
        .grid-header {
            margin-bottom: 24px;
            border-left: 5px solid var(--accent-brown);
            padding-left: 16px;}
        .grid-header h3 {
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--text-dark);}
			 /* 面包屑导航 */
        .breadcrumb {
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.85rem;
            color: var(--text-gray);}
        .breadcrumb a {
            color: var(--accent-brown);}
        .breadcrumb a:hover {
            text-decoration: underline;}
        .breadcrumb i {
            margin: 0 6px;
            font-size: 0.7rem;}
        /* 图片网格：一行3个，共12个 */
        .image-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;}
        .image-card {
            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);}
        .image-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent-brown);}
        .image-card-img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            display: block;
            background-color: #E2DCD0;}
        .image-card-info {
            padding: 14px 12px;}
        .image-card-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;}
        .image-card-date {
            font-size: 0.75rem;
            color: var(--text-gray);
            display: flex;
            align-items: center;
            gap: 6px;}
        .image-card-date i {
            font-size: 0.7rem;}
        /* 分页（可选） */
        .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 */
        @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;}
            .image-grid {
                grid-template-columns: repeat(2, 1fr);
                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) {
            .image-grid {
                grid-template-columns: 1fr;
                gap: 16px;}
            .image-grid-container {
                padding: 16px;}
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--primary-warm);
            padding: 40px 0 24px;
            margin-top: 20px;
            border-top: 1px solid var(--border-light);}
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 28px;}
        .footer-copyright {
            text-align: center;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid rgba(0,0,0,0.1);
            font-size: 0.8rem;}
        .footer-links a:hover {
            color: var(--accent-brown);}