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

        html {
            overflow-x: hidden;}

        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC',
                sans-serif;
            background: #f5f5f5;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;}

        /* ========== 滚动出场动画 ========== */
        .scroll-animate {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s ease, transform 0.8s ease;}

        .scroll-animate.visible {
            opacity: 1;
            transform: translateY(0);}

        .scroll-animate-delay-1 {
            transition-delay: 0.1s;}

        .scroll-animate-delay-2 {
            transition-delay: 0.2s;}

        .scroll-animate-delay-3 {
            transition-delay: 0.3s;}

        .scroll-animate-delay-4 {
            transition-delay: 0.4s;}

        .scroll-animate-delay-5 {
            transition-delay: 0.5s;}

        .scroll-slide-left {
            opacity: 0;
            transform: translateX(-60px);
            transition: opacity 0.8s ease, transform 0.8s ease;}

        .scroll-slide-left.visible {
            opacity: 1;
            transform: translateX(0);}

        .scroll-slide-right {
            opacity: 0;
            transform: translateX(60px);
            transition: opacity 0.8s ease, transform 0.8s ease;}

        .scroll-slide-right.visible {
            opacity: 1;
            transform: translateX(0);}

        /* ========== 顶部快捷栏 ========== */
        .top-bar {
            background: linear-gradient(to bottom,
                    rgba(0, 0, 0, 0.3),
                    rgba(0, 0, 0, 0));
            height: 58px;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            padding: 0 60px;
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1002;
            transition: all 0.4s ease;}

        .top-bar a {
            color: #fff;
            text-decoration: none;
            font-size: 1rem;
            display: flex;
            align-items: center;
            margin-right: 15px;
            gap: 4px;}

        .top-bar a::before {
            content: '';
            width: 3px;
            height: 14px;
            background: #fff;
            opacity: 0.6;
            margin-right: 15px;}

        .top-bar.scrolled a::before {
            background: #000;}

        .top-bar a:hover {
            color: #fff;}

        .top-bar .search-icon {
            width: 20px;
            height: 20px;
            cursor: pointer;
            margin-left: 10px;
            color: #fff;}

        .top-bar.scrolled {
            background: #fff;
            position: fixed;
            top: 0;}

        .top-bar.scrolled a {
            color: #666;}

        .top-bar.scrolled a:hover {
            color: #1a5f9e;}

        .top-bar.scrolled .search-icon {
            color: #666;}

        /* ========== 主导航 ========== */
        .main-header {
            position: absolute;
            left: 0;
            right: 0;
            padding: 0 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
            z-index: 1001;
            background: transparent;
            transition: all 0.4s ease;}

        .main-header.scrolled {
            position: fixed;
            background: #fff;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            height: 80px;}
       .header-inner {
                display: flex;
                align-items: center;
                justify-content: space-between;
                gap: 16px;
                width: 100%;
                box-sizing: border-box;}

       /* Logo容器：重点，设置max-width，允许缩小 */
            .logo-section {
                position: relative;
                flex: 0 1 160px;
                /* flex: 0 1 基准宽度，不主动放大，但空间不够会缩小！ */
                max-width: 30vw;
                min-width: 20vw;
                /* logo最小不能小于100px，防止缩没了 */

                display: flex;
                align-items: center;}
                
             /* 窗口变窄：缩小文字，防止挤压 */
            @media screen and (max-width:1200px) {
                .logo-section {

                    max-width: 50vw;
                    min-width: 20vw;}

                .main-nav li a {
                    font-size: 0.9rem;
                    padding: 4px 6px;}
            }

            @media screen and (max-width:992px) {
                .logo-section {

                    max-width: 50vw;
                    min-width: 30vw;}

                .main-nav li a {
                    font-size: 0.82rem;
                    padding: 3px 5px;}
            }

        .logo-white,
        .logo-black {
                position: absolute;
                left: 0;
                top: 50%;
                transform: translateY(-50%);
                width: 100%;
                height: auto;
                max-height: 58px;
                object-fit: contain;
                object-position: left center;
                transition: opacity 0.4s ease;}

        .logo-black {
            opacity: 0;}

        .main-header.scrolled .logo-white {
            opacity: 0;}

        .main-header.scrolled .logo-black {
            opacity: 1;}

        .main-header.scrolled .logo-white,
        .main-header.scrolled .logo-black {
            height: 73px;}

        .logo-text {
            color: #fff;
            transition: all 0.4s ease;}

        .main-header.scrolled .logo-text {
            color: #333;}

        .logo-text .cn-name {
            font-family: 'Noto Serif SC', serif;
            font-size: 26px;
            font-weight: 700;
            letter-spacing: 3px;
            line-height: 1.2;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
            transition: all 0.4s ease;}

        .main-header.scrolled .logo-text .cn-name {
            text-shadow: none;
            font-size: 22px;}

        .logo-text .en-name {
            font-size: 10px;
            font-weight: 400;
            letter-spacing: 1px;
            opacity: 0.95;
            margin-top: 1px;
            transition: all 0.4s ease;}

        .main-header.scrolled .logo-text .en-name {
            opacity: 0.7;}

        .logo-text .sub-title {
            font-size: 10px;
            opacity: 0.85;
            margin-top: 2px;
            letter-spacing: 0.5px;
            transition: all 0.4s ease;}

        .main-header.scrolled .logo-text .sub-title {
            opacity: 0.6;}

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0;}

        .nav-box {
            display: flex;
            align-items: center;
            gap: 0;}

        .nav-item {
            position: relative;}

        .nav-item>a {
            color: #fff;
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 500;
            padding: 30px 20px;
            display: block;
            transition: all 0.3s;
            position: relative;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);}
 @media screen and (min-width:1380px) and (max-width:1650px) {
            .nav-item > a {
                font-size: 0.8rem;}
        }

        .main-header.scrolled .nav-item>a {
            color: #333;
            text-shadow: none;
            padding: 25px 20px;}

        .nav-item>a::after {
            content: '';
            position: absolute;
            bottom: 18px;
            left: 20px;
            right: 20px;
            height: 2px;
            background: #fff;
            transform: scaleX(0);
            transition: transform 0.3s;}

        .main-header.scrolled .nav-item>a::after {
            background: #1a5f9e;
            bottom: 15px;}

        .nav-item:hover>a::after {
            transform: scaleX(1);}

        .nav-item:hover .dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);}

        .dropdown {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(-10px);
            background: #fff;
            min-width: 160px;
            padding: 8px 0;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            border-radius: 0 0 4px 4px;}

        .dropdown::before {
            content: '';
            position: absolute;
            top: -6px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 0;
            border-left: 6px solid transparent;
            border-right: 6px solid transparent;
            border-bottom: 6px solid #056aee;}

        .dropdown a {
            display: block;
            color: black;
            text-decoration: none;
            padding: 10px 24px;
            font-size: 1.2rem;
            transition: all 0.2s;
            white-space: nowrap;
            text-align: center;}

        .dropdown a:hover {
            color: #056aee;}

        .nav-search-wrapper {
            display: flex;
            align-items: center;
            margin-left: 10px;}

        .nav-search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 22px;
            padding: 0 6px 0 14px;
            overflow: hidden;
            transition: all 0.35s ease;
            color: #f0f0f0;
            width: 42px;
            height: 38px;}

        .main-header.scrolled .nav-search-box {
            background: rgba(0, 0, 0, 0.05);
            border-color: rgba(0, 0, 0, 0.12);}

        .nav-search-box:focus-within,
        .nav-search-box.active {
            width: 210px;
            background: rgba(255, 255, 255, 0.5);
            border-color: rgba(26, 95, 158, 0.4);
            box-shadow: 0 2px 12px rgba(26, 95, 158, 0.15);}

        .nav-search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            width: 100%;
            padding: 0;
            opacity: 0;
            transition: opacity 0.3s;}

        .nav-search-box input::placeholder {
            color: #ffffff;
            opacity: 0.8;}

        .nav-search-box input::-moz-placeholder {
            color: #ffffff;
            opacity: 0.8;}

        .nav-search-box input:-ms-input-placeholder {
            color: #ffffff;}

        .main-header.scrolled .nav-search-box input {
            color: #333;}

        .main-header.scrolled .nav-search-box input::placeholder {
            color: #666;
            opacity: 0.75;}

        .main-header.scrolled .nav-search-box input::-moz-placeholder {
            color: #666;
            opacity: 0.75;}

        .main-header.scrolled .nav-search-box input:-ms-input-placeholder {
            color: #666;}

        .nav-search-box:focus-within input,
        .nav-search-box.active input {
            opacity: 1;
            padding-right: 8px;}

        .nav-search-btn {
            border: none;
            background: transparent;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
            transition: color 0.3s, transform 0.3s;}

        .main-header.scrolled .nav-search-btn {
            color: #666;}

        .nav-search-box:focus-within .nav-search-btn,
        .nav-search-box.active .nav-search-btn {
            color: #1a5f9e;}

        .nav-search-btn:hover {
            transform: scale(1.1);}

        /* ========== 页面标题栏 ========== */
        .page-banner {
            background: linear-gradient(135deg, #1a3290 0%, #1a5f9e 100%);
            padding: 68px 60px 50px;
            color: #fff;
            position: relative;
            overflow: hidden;}

        .page-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;}

        .page-banner h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: 4px;
            position: relative;}

        .page-banner .en {
            font-size: 14px;
            opacity: 0.7;
            margin-top: 8px;
            letter-spacing: 2px;}

        /* ========== 主体布局 ========== */
        .main-container {
            
            margin: 0 auto;
            padding: 40px 50px;
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 30px;}

        /* ========== 侧边栏 ========== */
        .sidebar {
            background: #fff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
            height: fit-content;}

        .sidebar-header {
            background: #1a3290;
            color: #fff;
            padding: 16px 20px;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 2px;
            display: flex;
            align-items: center;
            justify-content: space-between;}

        .sidebar-header .grid-icon {
            width: 18px;
            height: 18px;
            display: none;
            grid-template-columns: 1fr 1fr;
            grid-template-rows: 1fr 1fr;
            gap: 3px;
            cursor: pointer;
            transition: opacity 0.3s;}

        .sidebar-header .grid-icon:hover {
            opacity: 0.7;}

        .sidebar-header .grid-icon span {
            background: #fff;
            border-radius: 1px;
            opacity: 0.9;}

        .sidebar-menu {
            max-height: 2000px;
            /* 默认展开 */
            overflow: hidden;
            transition: max-height 0.4s ease;}

        .sidebar-menu.collapsed {
            max-height: 0;}

        .sidebar-menu.collapsed {
            max-height: 0;}

        .sidebar-menu>li {
            border-bottom: 1px solid #f0f0f0;}

        .sidebar-menu>li:last-child {
            border-bottom: none;}

        /* 一级导航项（有子菜单） */
        .menu-item-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px 22px;
            color: #333;
            font-size: 15px;
            transition: all 0.3s;
            position: relative;
            cursor: pointer;
            user-select: none;}

        .menu-item-header:hover {
            color: #1a5f9e;
            background: #f8f9fa;
            padding-left: 26px;}

        .menu-item-header.active-item {
            color: #1a3290;
            background: #f0f4ff;
            font-weight: 600;
            border-left: 4px solid #1a3290;
            padding-left: 18px;}

        .menu-item-header .arrow-icon {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            margin-left: 8px;
            transition: transform 0.3s, color 0.3s;}

        .menu-item-header:hover .arrow-icon {
            color: #1a5f9e;}

        .menu-item-header.expanded .arrow-icon {
            transform: rotate(90deg);}

        /* 一级导航链接（无子菜单） */
        .menu-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px 22px;
            color: #333;
            text-decoration: none;
            font-size: 15px;
            transition: all 0.3s;
            position: relative;}

        .menu-link:hover {
            color: #1a5f9e;
            background: #f8f9fa;
            padding-left: 26px;}

        .menu-link.active {
            color: #1a3290;
            background: #f0f4ff;
            font-weight: 600;
            border-left: 4px solid #1a3290;
            padding-left: 18px;}

        .menu-link .arrow-right {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            margin-left: 8px;
            transition: color 0.3s;}

        .menu-link:hover .arrow-right {
            color: #1a5f9e;}

        /* 子菜单 */
        .sub-menu {
            list-style: none;
            background: #fafbfc;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;}

        .sub-menu.open {
            max-height: 500px;}

        .sub-menu>li {
            border-bottom: 1px solid #f0f0f0;}

        .sub-menu>li:last-child {
            border-bottom: none;}

        /* 二级导航项（有子菜单） */
        .sub-menu-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 22px 12px 38px;
            color: #666;
            font-size: 14px;
            transition: all 0.3s;
            cursor: pointer;
            user-select: none;
            position: relative;}

        .sub-menu-header::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 50%;
            transform: translateY(-50%);
            width: 5px;
            height: 5px;
            background: #ccc;
            border-radius: 50%;
            transition: background 0.3s;}

        .sub-menu-header:hover {
            color: #1a5f9e;
            background: #f0f4ff;}

        .sub-menu-header:hover::before {
            background: #1a5f9e;}

        .sub-menu-header.active-item {
            color: #1a3290;
            font-weight: 600;
            background: #e8eefc;}

        .sub-menu-header.active-item::before {
            background: #1a3290;}

        .sub-menu-header .arrow-icon {
            width: 12px;
            height: 12px;
            flex-shrink: 0;
            margin-left: 8px;
            transition: transform 0.3s;}

        .sub-menu-header.expanded .arrow-icon {
            transform: rotate(90deg);}

        /* 二级导航链接（无子菜单） */
        .sub-menu-link {
            display: block;
            padding: 12px 22px 12px 38px;
            color: #666;
            text-decoration: none;
            font-size: 14px;
            transition: all 0.3s;
            position: relative;}

        .sub-menu-link::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 50%;
            transform: translateY(-50%);
            width: 5px;
            height: 5px;
            background: #ccc;
            border-radius: 50%;
            transition: background 0.3s;}

        .sub-menu-link:hover {
            color: #1a5f9e;
            background: #f0f4ff;}

        .sub-menu-link:hover::before {
            background: #1a5f9e;}

        .sub-menu-link.active {
            color: #1a3290;
            font-weight: 600;
            background: #e8eefc;}

        .sub-menu-link.active::before {
            background: #1a3290;}

        /* 三级菜单 */
        .sub-sub-menu {
            list-style: none;
            background: #f5f7fa;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;}

        .sub-sub-menu.open {
            max-height: 300px;}

        .sub-sub-menu li {
            border-bottom: 1px solid #f0f0f0;}

        .sub-sub-menu li:last-child {
            border-bottom: none;}

        .sub-sub-menu a {
            display: block;
            padding: 10px 22px 10px 54px;
            color: #888;
            text-decoration: none;
            font-size: 13px;
            transition: all 0.3s;}

        .sub-sub-menu a:hover {
            color: #1a5f9e;
            background: #e8eefc;}

        .sub-sub-menu a.active {
            color: #1a3290;
            font-weight: 600;}

        /* ========== 内容区域 ========== */
        .content-area {
            background: #fff;
            padding: 30px 35px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
            min-height: 600px;}

        .content-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 2px solid #1a3290;
            padding-bottom: 12px;
            margin-bottom: 25px;}

        .content-header h2 {
            font-size: 22px;
            color: #333;
            font-weight: 700;}

        .breadcrumb {
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 6px;}

        .breadcrumb a {
            color: black;
            text-decoration: none;
            transition: color 0.3s;}

        .breadcrumb a:hover {
            color: #1a5f9e;}

    


        /* ========== 列表样式 ========== */
        .news-list {
            list-style: none;}

        .news-list-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            border-bottom: 1px dashed #e0e0e0;
            transition: all 0.3s;
            cursor: pointer;}

        .news-list-item:hover {
            background: #f8f9fa;
            padding-left: 8px;
            padding-right: 8px;
            margin: 0 -8px;}

        .news-list-item:hover .item-title {
            color: #1a5f9e;}

        .item-dot {
            width: 6px;
            height: 6px;
            background: #1a3290;
            border-radius: 50%;
            margin-right: 12px;
            flex-shrink: 0;}

        .item-title {
            font-size: 15px;
            color: #333;
            flex: 1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color 0.3s;}

        .item-date {
            font-size: 13px;
            flex-shrink: 0;
            margin-left: 20px;
            font-family: 'Noto Sans SC', sans-serif;}

        /* ========== 分页 ========== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            margin-top: 35px;
            padding-top: 20px;}

        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 34px;
            height: 34px;
            padding: 0 10px;
            border: 1px solid #e0e0e0;
            color: #666;
            text-decoration: none;
            font-size: 13px;
            transition: all 0.3s;
            cursor: pointer;}

        .pagination a:hover {
            background: #f0f4ff;
            border-color: #1a5f9e;
            color: #1a5f9e;}

        .pagination .current {
            background: #1a3290;
            color: #fff;
            border-color: #1a3290;}

        .pagination .prev,
        .pagination .next {
            padding: 0 14px;}

        .pagination .dots {
            border: none;
            color: #999;
            cursor: default;}

        .pagination .dots:hover {
            background: transparent;
            border-color: transparent;
            color: #999;}

        /* ========== 底部 ========== */
        .footer {
            background: #0f2b5b;
            color: #fff;
            padding: 50px 60px 20px;
            margin-top: 40px;}

        .footer-content {
                max-width: 1500px;
                margin: 0 auto;
                display: grid;
                grid-template-columns: 2fr 1fr 1fr ;
                gap: 40px;
                margin-bottom: 30px;}

        .footer-section h4 {
            font-size: 16px;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);}

        .footer-section p,
        .footer-section a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
            line-height: 2;
            text-decoration: none;
            display: block;
            transition: color 0.3s;}

        .footer-section a:hover {
            color: #fff;}

        .contact-section p {
            line-height: 1.8;
            margin-bottom: 8px;}

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;}

        /* ========== 移动端 ========== */
        .mobile-menu-btn,
        .mobile-nav-panel,
        .mobile-nav-overlay {
            display: none;}

        @media screen and (max-width: 768px) {
            .sidebar-header .grid-icon {
                display: grid;}

            .sidebar-menu {
                max-height: 0;}

            .sidebar-menu.collapsed {
                max-height: 2000px;}

            .top-bar {
                padding: 0 15px;
                height: 44px;
                justify-content: space-between;}

            .top-bar a {
                font-size: 11px;
                margin-right: 5px;}

            .top-bar a::before {
                width: 1px;
                height: 10px;
                margin-right: 8px;}

            .top-bar a:nth-child(n + 5) {
                display: none;}

            .top-bar .search-icon {
                width: 18px;
                height: 18px;}

            .main-header {
                padding: 0 15px;
                height: 60px;
                top: 14px;}

            .main-header.scrolled {
                top: 0;
                height: 60px;}

      

            .main-nav {
                display: none;}

            .mobile-menu-btn {
                display: flex;
                flex-direction: column;
                gap: 5px;
                cursor: pointer;
                padding: 10px;
                z-index: 1003;}

            .mobile-menu-btn span {
                width: 24px;
                height: 2px;
                background: #fff;
                transition: all 0.3s;}

            .main-header.scrolled .mobile-menu-btn span {
                background: #333;}

            .mobile-nav-panel {
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                max-width: 320px;
                height: 100vh;
                background: #fff;
                z-index: 2000;
                transition: right 0.4s ease;
                overflow-y: auto;
                padding: 60px 20px 20px;
                box-shadow: -5px 0 30px rgba(0, 0, 0, 0.2);}

            .mobile-nav-panel.active {
                right: 0;
                display: block;}

            .mobile-nav-overlay {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0, 0, 0, 0.5);
                z-index: 1999;
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s;}

            .mobile-nav-overlay.active {
                opacity: 1;
                visibility: visible;
                display: block;}

            .mobile-nav-item {
                border-bottom: 1px solid #eee;}

            .mobile-nav-item>a {
                display: block;
                padding: 15px 0;
                color: #333;
                text-decoration: none;
                font-size: 16px;
                font-weight: 500;}

            .mobile-dropdown {
                padding-left: 15px;
                padding-bottom: 10px;
                display: none;}

            .mobile-dropdown.active {
                display: block;}

            .mobile-dropdown a {
                display: block;
                padding: 10px 0;
                color: #666;
                text-decoration: none;
                font-size: 14px;}

            .mobile-nav-search {
                display: flex;
                align-items: center;
                background: #f5f5f5;
                border-radius: 22px;
                padding: 0 6px 0 16px;
                margin-bottom: 16px;
                border: 1px solid #e0e0e0;}

            .mobile-nav-search input {
                flex: 1;
                border: none;
                outline: none;
                background: transparent;
                font-size: 14px;
                color: #333;
                padding: 10px 0;}

            .mobile-nav-search input::placeholder {
                color: #999;}

            .mobile-nav-search button {
                border: none;
                background: transparent;
                cursor: pointer;
                padding: 8px;
                color: #666;
                display: flex;
                align-items: center;}

            .mobile-nav-search button:hover {
                color: #1a5f9e;}

            .page-banner {
                padding: 70px 20px 30px;}

            .page-banner h1 {
                font-size: 24px;}

            .main-container {
                grid-template-columns: 1fr;
                padding: 20px 0px;}

            .sidebar {
                margin-bottom: 10px;}

            .sidebar-header {
                padding: 14px 20px;
                font-size: 18px;}

            .content-area {
                padding: 20px 18px;
                overflow: hidden;}

            .content-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;}

            .news-list-item {
                padding: 14px 0;
                overflow: hidden;}

            .item-title {
                width: 100px;
                font-size: 14px;
                white-space: normal;
                display: -webkit-box;
                -webkit-line-clamp: 1;
                -webkit-box-orient: vertical;}

        .item-title a,
.item-title a:link,
.item-title a:visited {
    color: inherit;
    text-decoration: none;}

            .item-date {
                font-size: 12px;}

            .footer {
                padding: 30px 20px 15px;}

            .footer-content {
                grid-template-columns: 1fr;
                gap: 25px;}

            .footer-section h4 {
                font-size: 15px;
                margin-bottom: 12px;}

            .footer-section p,
            .footer-section a {
                font-size: 13px;
                line-height: 1.8;}

            .footer-bottom {
                font-size: 11px;
                padding-top: 15px;}
        }

        @media screen and (min-width: 769px) and (max-width: 1024px) {
            .top-bar {
                padding: 0 30px;}

            .main-header {
                padding: 0 30px;}

            .nav-item>a {
                padding: 30px 12px;
                font-size: 14px;}

            .main-container {
                grid-template-columns: 220px 1fr;
                padding: 30px 20px;}

            .footer-content {
                grid-template-columns: 1fr 1fr;}
        }
        .item-title a,
        .item-title a:link,
        .item-title a:visited,
        .item-title a:active {
            text-decoration: none;
            color: inherit;}
        .item-title a:hover {
            /* hover时样式，不需要可以删掉这一段 */
            color: #0066cc;}
/* ========== 移动端面板内的搜索框 ========== */
.mobile-nav-panel .nav-search-box {
    width: 100% !important;          /* 占满面板宽度，不再折叠 */
    height: 42px;
    background: #f5f5f5;             /* 浅灰底，白面板上可见 */
    border: 1px solid #e0e0e0;
    border-radius: 22px;
    padding: 0 6px 0 16px;
    margin-bottom: 16px;
    opacity: 1;
}

/* 展开/聚焦状态也要覆盖，防止被 PC 端 .active 样式顶回去 */
.mobile-nav-panel .nav-search-box.active,
.mobile-nav-panel .nav-search-box:focus-within {
    width: 100% !important;
    background: #f5f5f5;
    border-color: #1a5f9e;
    box-shadow: none;
}

/* 输入的文字颜色：白色 → 深蓝 */
.mobile-nav-panel .nav-search-box input {
    color: #1a5f9e;                  /* 想换别的色改这里，如 #333 */
    opacity: 1;                      /* PC 端收起时 opacity 是 0，这里强制显示 */
}

/* 占位符颜色 */
.mobile-nav-panel .nav-search-box input::placeholder { color: #999; opacity: 1; }
.mobile-nav-panel .nav-search-box input::-moz-placeholder { color: #999; opacity: 1; }
.mobile-nav-panel .nav-search-box input:-ms-input-placeholder { color: #999; }

/* 搜索图标按钮颜色 */
.mobile-nav-panel .nav-search-box .nav-search-btn { color: #666; }
.mobile-nav-panel .nav-search-box.active .nav-search-btn,
.mobile-nav-panel .nav-search-box:focus-within .nav-search-btn { color: #1a5f9e; }
.mobile-nav-item > a,
.mobile-nav-row > .mobile-nav-link {   /* 新增第二个选择器 */
    flex: 1 1 auto;
    display: block;
    padding: 15px 0;
    color: #000000;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
}
/* ===== 一级标题与展开箭头分开：点标题跳转，点箭头才展开子菜单 ===== */
.mobile-nav-row { display: flex; align-items: center; }
.mobile-nav-toggle {            /* 44×44 手指热区、无边框透明按钮 */
    flex: 0 0 auto; width: 44px; height: 44px; margin-right: -12px;
    display: flex; align-items: center; justify-content: center;
    border: none; background: transparent; color: #999;
    font-size: 12px; line-height: 1;
    cursor: pointer; -webkit-tap-highlight-color: transparent;
    transition: transform .3s ease, color .3s ease;
}
.mobile-nav-toggle.active { transform: rotate(180deg); color: #1a5f9e; }