/* CSS 变量定义 */
        :root {
            --my-blue: #0A68FF; --my-yellow: #FFC900; --my-dark: #1D2129; --my-text: #4E5969; --my-light-gray: #F7F8FA; --my-border-color: #E5E6EB;
            --bs-body-font-family: 'Roboto', 'Noto Sans SC', sans-serif;
            --bs-primary: var(--my-blue); --bs-primary-rgb: 10, 104, 255; --bs-warning: var(--my-yellow);
            --bs-body-color: var(--my-text); --bs-body-bg: #FFFFFF; --bs-link-hover-decoration: none;
            --fengrui-primary-blue: #0A2540;
            --fengrui-accent-yellow: #FFB800;
        }
        
        /* 基础样式 */
        body { font-weight: 400; scroll-behavior: smooth; min-height: 100vh; display: flex; flex-direction: column; }
        a, .btn, .nav-link, .navbar-brand { transition: all 0.3s ease; }

        /* 导航栏样式 */
        .navbar { padding: 1rem; transition: background-color 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease; }
        .navbar-transparent { background-color: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
        .navbar-scrolled { background-color: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); box-shadow: 0 4px 12px rgba(0,0,0,0.06); padding-top: 0.5rem; padding-bottom: 0.5rem; }
        .navbar .navbar-nav .nav-link { color: var(--my-dark) !important; }
        .navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link.active {
    color: var(--my-blue) !important;
}
        .navbar #brand-logo-text { color: var(--my-dark) !important; }
        .navbar-scrolled .navbar-nav .nav-link { color: var(--my-dark) !important; }
        .navbar-scrolled .navbar-nav .nav-link:hover { color: var(--my-blue) !important; }
        .navbar-scrolled #brand-logo-text { color: var(--my-dark) !important; }
        .navbar-brand img { 
    transition: filter 0.4s ease; 
    width: 240px !important; 
    height: 45px !important; 
    object-fit: contain; 
    /* filter: invert(1) brightness(0.5) sepia(1) hue-rotate(190deg) saturate(5); */ 
}
        /* .navbar-scrolled .navbar-brand img { filter: invert(1) brightness(0.5) sepia(1) hue-rotate(190deg) saturate(5); } */
/* 移除LOGO滤镜效果，保持原始颜色 */
        .navbar .nav-link { font-size: 1rem; font-weight: 500; padding: 0.5rem 1rem !important; position: relative; }
        .navbar .nav-link::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 0; height: 2px; background-color: var(--my-blue); transition: width 0.3s ease; }
        .navbar .nav-link:hover::after, .navbar .nav-link.active::after { width: 50%; }
        .navbar .nav-link.active { color: var(--my-primary) !important; font-weight: 600; position: relative; }
        .navbar .nav-link.active::after { content: ''; position: absolute; bottom: -5px; left: 50%; transform: translateX(-50%); width: 30px; height: 2px; background-color: var(--my-primary); border-radius: 1px; }
        .navbar-scrolled .nav-link.active { color: var(--my-yellow) !important; }
.navbar-scrolled .nav-link.active::after { background-color: var(--my-blue); }
        
        .dropdown { position: relative; }
        
        /* 下拉菜单样式 */
        .dropdown-menu { 
            background-color: rgba(255, 255, 255, 0.95); 
            backdrop-filter: blur(10px); 
            border: 1px solid var(--my-border-color); 
            border-radius: 8px; 
            box-shadow: 0 8px 25px rgba(0,0,0,0.15); 
            margin-top: 0; display: none; position: absolute;
            top: 100%; left: 0; z-index: 1000; min-width: 200px;
        }
        .dropdown:hover .dropdown-menu { display: block; }
        .dropdown-menu:hover { display: block; }
        .dropdown::before {
            content: ''; position: absolute; top: 100%; left: 0; right: 0;
            height: 10px; background: transparent; z-index: 999;
        }
        .dropdown:hover::before { display: block; }
        .dropdown-item { 
            color: var(--my-dark); font-weight: 500; padding: 0.75rem 1.5rem; 
            transition: all 0.3s ease; display: block; width: 100%; clear: both;
            text-align: inherit; white-space: nowrap; background-color: transparent; border: 0;
        }
        .dropdown-item:hover, .dropdown-item:focus { 
            background-color: var(--my-light-gray); color: var(--my-blue); text-decoration: none;
        }
        .dropdown-toggle::after { display: none; }
        .navbar-toggler { border: none !important; }
        .navbar-toggler:focus { box-shadow: none !important; }
        .navbar-toggler .bi-list { font-size: 2rem; color: var(--my-dark); transition: color 0.4s ease; }
        .navbar-scrolled .navbar-toggler .bi-list { color: var(--my-dark); }
        
        /* ========== 产品详情主要内容样式 ========== */
        .product-detail-section {
            padding: 80px 0;
            background-color: #fff;
        }

        /* 产品图片廊 */
        .product-gallery-container {
            position: relative;
        }
        
        .main-product-image {
            border: 1px solid var(--my-border-color);
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 1.5rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
            transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        
        .main-product-image:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.16);
        }
        
        .main-product-image img {
            width: 100%;
            height: auto;
            cursor: pointer;
            transition: transform 0.5s ease;
            display: block;
        }
        
        .main-product-image:hover img {
            transform: scale(1.03);
        }

        .product-thumbnails {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        
        .thumbnail-item {
            border: 2px solid transparent;
            border-radius: 8px;
            overflow: hidden;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            flex: 1;
            min-width: 80px;
            max-width: 120px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }
        
        .thumbnail-item img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        .thumbnail-item.active, 
        .thumbnail-item:hover {
            border-color: var(--my-blue);
            transform: translateY(-3px);
            box-shadow: 0 6px 16px rgba(10, 104, 255, 0.2);
        }

        /* 产品信息区域 */
        .product-info-container h1 {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }
        

        
        .product-short-description {
            font-size: 1.15rem;
            line-height: 1.8;
            margin-bottom: 2.5rem;
            color: var(--my-text);
            position: relative;
            padding-left: 20px;
        }
        
        .product-short-description::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(135deg, #0A68FF 0%, #0047CC 100%);
            border-radius: 4px;
        }

        /* 产品规格 */
        .product-specs {
            margin-bottom: 3rem;
            background-color: var(--my-light-gray);
            border-radius: 12px;
            padding: 0.5rem 1.5rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }
        
        .product-specs .spec-item {
            display: flex;
            padding: 1rem 0;
            border-bottom: 1px solid var(--my-border-color);
            align-items: center;
        }
        
        .product-specs .spec-item:first-child {
            border-top: 1px solid var(--my-border-color);
        }
        
        .spec-item .spec-label {
            font-weight: 600;
            color: var(--my-dark);
            width: 120px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
        }
        
        .spec-item .spec-label i {
            margin-right: 8px;
            color: var(--my-blue);
            font-size: 1.1rem;
        }
        
        .spec-item .spec-value {
            color: var(--my-text);
            flex-grow: 1;
        }

        /* spec-icon 和 hotline-contact 样式 */
        .spec-icon {
            color: var(--my-blue);
            font-size: 1.2rem;
            min-width: 24px;
        }
        
        .hotline-contact {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        @media (max-width: 992px) {
            .hotline-contact {
                text-align: center;
            }
        }

        /* 产品标签按钮样式 */
        .product-tags {
            margin-bottom: 1.5rem;
        }
        
        .product-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.35rem 0.75rem;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            border-radius: 16px;
            font-size: 0.8rem;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            border: none;
        }
        
        .product-tag.tag-support {
            background-color: #28a745;
            color: white;
        }
        
        .product-tag.tag-support:hover {
            background-color: #218838;
            color: white;
            transform: translateY(-1px);
        }
        
        .product-tag.tag-custom {
            background-color: #007bff;
            color: white;
        }
        
        .product-tag.tag-custom:hover {
            background-color: #0056b3;
            color: white;
            transform: translateY(-1px);
        }
        
        .product-tag.tag-hot {
            background-color: #ffc107;
            color: #212529;
        }
        
        .product-tag.tag-hot:hover {
            background-color: #e0a800;
            color: #212529;
            transform: translateY(-1px);
        }
        
        .product-tag i {
            margin-right: 0.4rem;
            font-size: 0.85rem;
        }



        /* 产品详情标签页 */
        .product-details-tabs {
            margin-top: 80px;
        }
        
        .product-details-tabs .nav-tabs {
            border-bottom: 2px solid var(--my-border-color);
        }
        
        .product-details-tabs .nav-link {
            color: var(--my-text);
            font-weight: 600;
            font-size: 1.15rem;
            border: none;
            border-bottom: 3px solid transparent;
            margin-right: 2.5rem;
            padding: 0.75rem 0;
            position: relative;
        }
        
        .product-details-tabs .nav-link::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 0;
            height: 3px;
            background: linear-gradient(135deg, #0A68FF 0%, #0047CC 100%);
            transition: width 0.3s ease;
        }
        
        .product-details-tabs .nav-link:hover::after {
            width: 100%;
        }
        
        .product-details-tabs .nav-link.active {
            color: var(--my-blue);
            background-color: transparent;
            border-color: transparent;
        }
        
        .product-details-tabs .nav-link.active::after {
            width: 100%;
        }
        
        .product-details-tabs .tab-content {
            padding: 2.5rem 1rem;
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--my-text);
        }
        
        .product-details-tabs .tab-content h3 {
            color: var(--my-dark);
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 1.25rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--my-border-color);
        }
        
        .product-details-tabs .tab-content ul {
            padding-left: 1.5rem;
        }
        
        .product-details-tabs .tab-content ul li {
            margin-bottom: 0.75rem;
            position: relative;
            padding-left: 1.5rem;
        }
        
        .product-details-tabs .tab-content ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.65em;
            width: 8px;
            height: 8px;
            background-color: var(--my-blue);
            border-radius: 50%;
        }
        
        .product-details-tabs .tab-content strong {
            color: var(--my-dark);
        }

        /* 规格表格 */
        .table {
            border-collapse: separate;
            border-spacing: 0;
            width: 100%;
            margin: 1.5rem 0;
        }
        
        .table thead th {
            background-color: var(--my-blue);
            color: white;
            font-weight: 500;
            border: none;
            padding: 1rem;
        }
        
        .table tbody tr {
            transition: background-color 0.2s ease;
        }
        
        .table tbody tr:hover {
            background-color: rgba(10, 104, 255, 0.05);
        }
        
        .table tbody td {
            padding: 1rem;
            border-bottom: 1px solid var(--my-border-color);
            vertical-align: middle;
        }
        
        .table-striped tbody tr:nth-of-type(odd) {
            background-color: var(--my-light-gray);
        }

        /* 富文本编辑器生成的通用表格样式 */
        .tab-content table,
        .product-details-tabs table {
            border-collapse: collapse;
            width: 100%;
            margin: 1.5rem 0;
            border: 1px solid var(--my-border-color);
        }
        
        .tab-content table th,
        .tab-content table td,
        .product-details-tabs table th,
        .product-details-tabs table td {
            border: 1px solid var(--my-border-color);
            padding: 0.75rem 1rem;
            text-align: left;
            vertical-align: middle;
        }
        
        .tab-content table th,
        .product-details-tabs table th {
            background-color: var(--my-blue);
            color: white;
            font-weight: 500;
        }
        
        .tab-content table tbody tr:nth-child(even),
        .product-details-tabs table tbody tr:nth-child(even) {
            background-color: var(--my-light-gray);
        }
        
        .tab-content table tbody tr:hover,
        .product-details-tabs table tbody tr:hover {
            background-color: rgba(10, 104, 255, 0.05);
        }

        /* 下载列表 */
        .list-group-item {
            border-color: var(--my-border-color);
            padding: 1.25rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .list-group-item:hover {
            background-color: var(--my-light-gray);
        }
        
        .btn-sm {
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
        }

        /* 移动端底部导航栏 */
        .mobile-bottom-nav { 
            background-color: #fff; padding: 0.75rem 1rem; 
            border-top: 1px solid var(--my-border-color); 
            box-shadow: 0 -4px 12px rgba(0,0,0,0.05); z-index: 1050; 
        }
        .mobile-bottom-nav .btn { font-weight: 700; border-radius: 50px; padding: 0.75rem 1.25rem; }
        .mobile-bottom-nav .btn-warning { background-color: var(--my-yellow); color: var(--my-dark); border: none; }
        
        /* 移动端响应式样式 */
        @media (max-width: 991.98px) {
            .navbar-brand-centered { position: absolute; left: 50%; transform: translateX(-50%); }
            .navbar .nav-link.active::after, .navbar .nav-link:hover::after { width: 0; }
            
            /* 侧边栏菜单 (Offcanvas) */
            .offcanvas { 
                background-color: #FFFFFF; 
                --bs-offcanvas-width: clamp(260px, 75vw, 280px); 
                --bs-offcanvas-transition: transform .4s ease-in-out; 
            }
            .offcanvas-header { border-bottom: 1px solid var(--my-border-color); padding: 1rem 1.5rem; }
            .offcanvas-title { color: var(--my-dark); font-weight: 500; font-size: 1.1rem; }
            .offcanvas-body { 
                padding: 0 !important; display: flex; flex-direction: column; 
                overflow: hidden; padding-bottom: 3rem !important;
            }
            .offcanvas .navbar-nav { padding: 2rem 1.5rem; flex-grow: 1; overflow-y: auto; -ms-overflow-style: none; scrollbar-width: none; }
            .offcanvas .navbar-nav::-webkit-scrollbar { display: none; }
            .offcanvas-footer-info { margin-top: auto; padding: 1.5rem; border-top: 1px solid var(--my-border-color); flex-shrink: 0; text-align: center; }
            .offcanvas .nav-item { margin-bottom: 2rem; }
            .offcanvas .nav-link { color: var(--my-dark) !important; font-size: 1.5rem; font-weight: 500; padding: 0.5rem 0 !important; position: relative; display: inline-block; width: auto; }
            .offcanvas .nav-link::after { content: ''; position: absolute; bottom: -8px; left: 0; transform: none; width: 0; height: 2px; background-color: var(--my-blue); transition: width 0.3s ease; }
            .offcanvas .nav-link:hover::after, .offcanvas .nav-link.active::after { width: 40px; }
            .offcanvas .nav-link.active { color: var(--my-yellow) !important; font-weight: 700; }
            .offcanvas-footer-info .contact-item { display: flex; align-items: center; justify-content: center; gap: 0.75rem; font-size: 0.9rem; color: var(--my-text); margin-bottom: 0.8rem; }
            
            /* 移动端子菜单样式 */
            .offcanvas .submenu { 
                list-style: none; padding-left: 0; margin-top: 1rem; margin-bottom: 1rem; 
                max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out;
            }
            .offcanvas .submenu.show { max-height: 300px; transition: max-height 0.3s ease-in; }
            .offcanvas .submenu li { margin-bottom: 1rem; }
            .offcanvas .submenu-link { 
                font-size: 1.2rem !important; color: var(--my-text) !important; 
                font-weight: 400 !important; padding-left: 1.5rem !important; position: relative; 
            }
            .offcanvas .submenu-link::before { 
                content: '•'; position: absolute; left: 0.5rem; color: var(--my-blue); font-weight: bold; 
            }
            .offcanvas .submenu-link:hover, .offcanvas .submenu-link.active { color: var(--my-blue) !important; }
            .offcanvas .nav-link .bi-chevron-down {
                font-size: 1.3rem; margin-left: 0.5rem; color: var(--my-blue);
                opacity: 0.8; transition: transform 0.3s ease;
            }
            .offcanvas .mobile-dropdown-toggle.active .bi-chevron-down { transform: rotate(180deg); }
            .offcanvas .mobile-dropdown-toggle { cursor: pointer; }
            .offcanvas-footer-info .company-name { 
                color: var(--fengrui-primary-blue); font-weight: 400; border-top: 1px solid var(--my-border-color); 
                margin-top: 0.75rem; padding-top: 0.3rem; font-size: 0.85rem; text-align: center; letter-spacing: 0.3px;
                background: linear-gradient(135deg, var(--fengrui-primary-blue), var(--my-blue));
                -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
            }
            #back-to-top-btn { bottom: 100px; } 
        }

        /* 面包屑导航区域样式 */
        .breadcrumb-section {
            background: linear-gradient(135deg, var(--my-blue) 0%, var(--fengrui-primary-blue) 100%);
            padding: 70px 0 30px; 
            margin-top: 76px;
            position: relative;
            overflow: hidden;
        }
        .breadcrumb-section::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
            opacity: 0.3;
        }
        .breadcrumb-section .container { position: relative; z-index: 2; }
        .breadcrumb { background: none; padding: 0; margin-bottom: 1rem; }
        .breadcrumb-item a { color: rgba(255, 255, 255, 0.8); text-decoration: none; transition: color 0.3s ease; }
        .breadcrumb-item a:hover { color: white; }
        .breadcrumb-item.active { color: white; }
        .breadcrumb-item + .breadcrumb-item::before { content: ">"; color: rgba(255, 255, 255, 0.6); }
        .page-title {
            color: white; font-size: 2.5rem; font-weight: 700;
            margin-bottom: 0; text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        @media (max-width: 768px) {
            .breadcrumb-section { padding: 50px 0 20px; }
            .page-title { font-size: 2rem; }
        }

        /* 微信二维码弹窗样式 */
        #wechatModal .modal-content {
          background: rgba(255, 255, 255, 0.7); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
          border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 24px;
          box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15); overflow: hidden;
        }
        #wechatModal .modal-header {
          border-bottom: none; padding: 1.5rem 1.5rem 0; display: flex; flex-direction: column;
          align-items: center; position: relative;
        }
        #wechatModal .wechat-icon { font-size: 2.5rem; color: #07c160; margin-bottom: 0.75rem; }
        #wechatModal .modal-title { font-size: 1.1rem; font-weight: 600; color: var(--fengrui-primary-blue); text-align: center; width: 100%; margin: 0; }
        #wechatModal .btn-close {
          position: absolute; top: 1rem; right: 1rem; background-color: rgba(0, 0, 0, 0.2);
          border-radius: 50%; width: 36px; height: 36px; opacity: 0.9;
          transition: all 0.3s ease; filter: invert(1) grayscale(100%) brightness(200%);
        }
        #wechatModal .btn-close:hover { background-color: rgba(0, 0, 0, 0.35); opacity: 1; transform: rotate(90deg); }
        #wechatModal .modal-body { padding: 1rem 2rem 2.5rem; text-align: center; }
        #wechatModal .qr-container {
          position: relative; display: inline-block; padding: 8px; border-radius: 20px;
          margin-bottom: 1.5rem; background: linear-gradient(145deg, rgba(255,255,255,0.6), rgba(255,255,255,0.2));
          box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        #wechatModal .qr-container::before {
          content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
          border-radius: 20px; border: 2px solid transparent;
          background: conic-gradient(from 180deg at 50% 50%, #07c160, var(--my-blue), #07c160) border-box;
          -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
          -webkit-mask-composite: destination-out; mask-composite: exclude;
          animation: spin 3s linear infinite;
        }
        @keyframes spin { to { transform: rotate(1turn); } }
        #wechatModal .qr-placeholder {
          width: 180px; height: 180px; border-radius: 14px;
          overflow: hidden; position: relative; cursor: pointer; background-color: white; 
        }
        #wechatModal .qr-placeholder::after {
          content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
          background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
          transition: left 0.6s ease;
        }
        #wechatModal .qr-placeholder:hover::after { left: 100%; }
        #wechatModal .qr-code-img { width: 100%; height: 100%; object-fit: contain; border-radius: 12px; }
        #wechatModal .scan-instruction { font-size: 0.95rem; color: #2c3e50; margin-bottom: 0.25rem; font-weight: 500; }
        #wechatModal .contact-info { font-size: 1rem; font-weight: 600; color: #07c160; margin: 0; letter-spacing: 1px; user-select: all; }
        #wechatModal.fade .modal-dialog {
          transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.4s ease-out;
          transform: translateY(-40px) scale(0.95); opacity: 0;
        }
        #wechatModal.show .modal-dialog { transform: translateY(0) scale(1); opacity: 1; }
        @media (max-width: 480px) {
          #wechatModal .modal-dialog { margin: 1rem; max-width: calc(100vw - 2rem); }
          #wechatModal .modal-body { padding: 0.75rem 1rem 1.5rem; }
          #wechatModal .qr-placeholder { width: 150px; height: 150px; }
        }
        
        main { flex-grow: 1; }

        .new-footer { background-color: var(--fengrui-primary-blue); color: rgba(255, 255, 255, 0.7); padding: 3rem 0; font-size: 0.9rem; }
        .new-footer h3, .new-footer h4 { color: #fff; font-family: 'Noto Sans SC', sans-serif; font-weight: 500; }
        .new-footer a { color: rgba(255, 255, 255, 0.7); text-decoration: none; transition: color 0.3s ease; }
        .new-footer a:hover { color: var(--my-yellow); }
        .new-footer .list-unstyled li { margin-bottom: 0.5rem; }
        .new-footer .small { color: rgba(255, 255, 255, 0.7); }
        .new-footer hr { border-color: rgba(255, 255, 255, 0.15); }
        #back-to-top-btn { position: fixed; bottom: 25px; right: 25px; width: 50px; height: 50px; background-color: var(--fengrui-accent-yellow); color: var(--fengrui-primary-blue); border: none; border-radius: 50%; font-size: 1.5rem; display: none; align-items: center; justify-content: center; cursor: pointer; z-index: 1080; opacity: 0; visibility: hidden; transform: translateY(20px); transition: all 0.3s ease; box-shadow: 0 4px 10px rgba(0,0,0,0.2); }
        #back-to-top-btn.show { display: flex; opacity: 1; visibility: visible; transform: translateY(0); }
        #back-to-top-btn:hover { background-color: var(--fengrui-primary-blue); color: var(--fengrui-accent-yellow); }
        @media (max-width: 991.98px) { #back-to-top-btn { bottom: 100px; } }
        
        /* SEO标签区域 - 极简响应式风格 */
        .article-tags {
            margin: 2rem 0;
            padding: 1.5rem 0 0;
            position: relative;
        }
        
        .article-tags::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--my-blue), var(--fengrui-primary-blue), var(--my-blue));
            background-size: 200% 100%;
            animation: shimmer 3s ease-in-out infinite;
        }
        
        @keyframes shimmer {
            0%, 100% { background-position: -200% 0; }
            50% { background-position: 200% 0; }
        }
        
        .tags-title {
            font-size: 1rem;
            font-weight: 500;
            color: #6c757d;
            margin-bottom: 1rem;
            text-align: left;
            letter-spacing: 0.5px;
            margin-top: 0.5rem;
        }
        
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        
        .tag-item {
            display: inline-block;
            padding: 0.4rem 0.8rem;
            background-color: #f8f9fa;
            border: 1px solid #e9ecef;
            border-radius: 4px;
            text-decoration: none;
            color: #495057;
            font-size: 0.875rem;
            font-weight: 400;
            transition: all 0.2s ease;
            line-height: 1.2;
        }
        
        .tag-item:hover {
            background-color: #e9ecef;
            border-color: #dee2e6;
            color: #212529;
            text-decoration: none;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .article-tags {
                margin: 1.5rem 0;
            }
            
            .tags-title {
                font-size: 0.9rem;
                margin-bottom: 0.8rem;
            }
            
            .tag-item {
                padding: 0.35rem 0.7rem;
                font-size: 0.8rem;
            }
        }
        
        @media (max-width: 480px) {
            .tags-container {
                gap: 0.4rem;
            }
            
            .tag-item {
                padding: 0.3rem 0.6rem;
                font-size: 0.75rem;
            }
        }