:root {
            --primary: #1a4f8b;
            --primary-light: #2d6fb8;
            --secondary: #0c2d52;
            --accent: #f39c12;
            --light: #f5f7fa;
            --dark: #333;
            --gray: #666;
            --light-gray: #e0e6ed;
            --spacing: 15px;
            --radius: 6px;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark);
            line-height: 1.6;
            background-color: #fff;
            overflow-x: hidden;
        }

  /* 顶部导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            box-shadow: var(--shadow);
            z-index: 1000;
            transition: var(--transition);
            padding: 0 5%;
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            max-width: 1600px;
            margin: 0 auto;
        }

        .logo-container {
            display: flex;
            align-items: center;
            z-index: 1002;
        }

        .logo {
            height: 60px;
            width: auto;
            margin-right: 10px;
        }

        .logo-placeholder {
            width: 300px;
            height: 65px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 24px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        /* PC端导航菜单 */
        .desktop-nav ul {
            display: flex;
            list-style: none;
        }

        .desktop-nav li {
            position: relative;
            margin: 0 12px;
        }

        .desktop-nav a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            padding: 10px 15px;
            border-radius: var(--radius);
            transition: var(--transition);
            display: block;
            font-size: 16px;
            position: relative;
        }

        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 15px;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }

        .desktop-nav a:hover::after {
            width: calc(100% - 30px);
        }

        .desktop-nav a:hover {
            color: var(--primary);
        }

        .nav-right {
            display: flex;
            align-items: center;
        }

        .contact-info {
            display: flex;
            align-items: center;
            margin-right: 25px;
        }

        .contact-info i {
            color: var(--primary);
            margin-right: 8px;
            font-size: 18px;
        }

        .sitemap-btn {
            background: var(--primary);
            color: white;
            padding: 10px 20px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2);
        }

        .sitemap-btn:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 8px rgba(37, 99, 235, 0.3);
        }

        /* 汉堡菜单按钮 - 移动端 */
        .hamburger {
            display: none;
            cursor: pointer;
            background: none;
            border: none;
            padding: 12px;
            z-index: 1001;
            background: var(--light);
            border-radius: 50%;
            width: 50px;
            height: 50px;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 3px;
            background: var(--dark);
            margin: 2.5px 0;
            transition: var(--transition);
            border-radius: 2px;
        }

        /* 移动端导航菜单 */
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            width: 85%;
            max-width: 320px;
            height: 100vh;
            background: var(--white);
            box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
            z-index: 1000;
            transition: var(--transition);
            padding: 100px 20px 30px;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
        }

        .mobile-nav.active {
            right: 0;
        }

        .mobile-nav ul {
            list-style: none;
            margin-bottom: 30px;
        }

        .mobile-nav li {
            margin: 18px 0;
            opacity: 0;
            transform: translateX(20px);
            transition: opacity 0.4s ease, transform 0.4s ease;
        }

        .mobile-nav.active li {
            opacity: 1;
            transform: translateX(0);
        }

        .mobile-nav a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            font-size: 18px;
            display: flex;
            align-items: center;
            padding: 12px 20px;
            border-radius: var(--radius);
            transition: var(--transition);
            background: rgba(243, 244, 246, 0.5);
        }

        .mobile-nav a i {
            margin-right: 15px;
            width: 25px;
            text-align: center;
            color: var(--primary);
        }

        .mobile-nav a:hover {
            background: var(--light);
            color: var(--primary);
            transform: translateX(5px);
        }

        .mobile-contact {
            padding: 20px;
            background: var(--light);
            border-radius: var(--radius);
            margin-top: auto;
        }

        .mobile-contact .contact-info {
            margin-bottom: 15px;
            font-size: 18px;
        }

        .mobile-contact .sitemap-btn {
            width: 100%;
            text-align: center;
            padding: 12px;
        }

        /* 内容区域 */
        .content {
            max-width: 1200px;
            margin: 120px auto 50px;
            padding: 0 20px;
        }

        .hero {
            text-align: center;
            padding: 80px 20px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: white;
            border-radius: var(--radius);
            margin-bottom: 40px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .hero::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -50px;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }

        .hero h1 {
            font-size: 42px;
            margin-bottom: 20px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
            position: relative;
            z-index: 1;
        }

        .hero p {
            font-size: 20px;
            max-width: 700px;
            margin: 0 auto 30px;
            position: relative;
            z-index: 1;
        }

        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .feature-card {
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 30px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }

        .feature-card i {
            font-size: 48px;
            color: var(--primary);
            margin-bottom: 20px;
            background: rgba(37, 99, 235, 0.1);
            width: 80px;
            height: 80px;
            line-height: 80px;
            border-radius: 50%;
            margin: 0 auto 20px;
        }

        .feature-card h3 {
            margin-bottom: 15px;
            color: var(--dark);
            font-weight: 700;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .desktop-nav, .nav-right {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-nav li {
                transition-delay: calc(0.1s * var(--i));
            }

            .header-container {
                height: 70px;
            }

            .logo {
                height: 50px;
            }
        }

        @media (min-width: 993px) {
            .mobile-nav {
                display: none;
            }
        }

        /* 导航激活状态 */
        .hamburger.active {
            background: var(--primary);
        }

        .hamburger.active span {
            background: white;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: translateX(-20px);
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        /* 响应式调整 */
        @media (max-width: 576px) {
            .logo-placeholder {
                width: 150px;
                height: 40px;
                font-size: 20px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero p {
                font-size: 18px;
            }

            .hamburger {
                width: 45px;
                height: 45px;
                padding: 10px;
            }

            .hamburger span {
                width: 22px;
            }

            .mobile-nav {
                width: 90%;
                padding: 90px 15px 20px;
            }
        }

        /* Banner区域 */
        .banner-section {
            position: relative;
            height: 100vh;
            margin-top: 80px;
            overflow: hidden;
        }

        .banner-slider {
            height: 100%;
            position: relative;
        }

        .banner-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0;
            transition: opacity 1s ease;
        }

        .banner-slide.active {
            opacity: 1;
        }

        .banner-content {
            position: absolute;
            top: 50%;
            left: 10%;
            transform: translateY(-50%);
            max-width: 600px;
            color: white;
            z-index: 2;
        }

        .banner-content h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 0 2px 8px rgba(0,0,0,0.3);
        }

        .banner-content p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }

        .btn-primary {
            background: var(--accent);
            color: white;
            padding: 15px 35px;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: #e67e22;
            transform: translateY(-3px);
            box-shadow: 0 8px 15px rgba(0,0,0,0.15);
        }

        .announcement-box {
            position: absolute;
            bottom: 40px;
            right: 40px;
            background: rgba(255,255,255,0.9);
            border-radius: var(--radius);
            padding: 20px;
            max-width: 400px;
            z-index: 10;
            width: 400px;
            height: 150px;
            box-shadow: var(--shadow);
        }

        .announcement-header {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--light-gray);
        }

        .announcement-header i {
            color: var(--primary);
            margin-right: 10px;
            font-size: 1.4rem;
        }

        .announcement-header h3 {
            color: var(--primary);
        }

        .announcement-content {
            height: 120px;
            overflow: hidden;
            position: relative;
        }

        .announcement-item {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            opacity: 0;
            transition: opacity 0.5s ease;
        }

        .announcement-item.active {
            opacity: 1;
        }

        .announcement-item a {
            display: block;
            padding: 8px 0;
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
        }

        .announcement-item a:hover {
            color: var(--primary);
            padding-left: 8px;
        }

        .announcement-item a::before {
            content: "•";
            margin-right: 10px;
            color: var(--accent);
        }

        /* 栏目内容区 */
        .section {
            padding: 100px 5%;
            max-width: 1600px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-header p {
            color: var(--gray);
            max-width: 700px;
            margin: 20px auto 0;
            font-size: 1.1rem;
        }

        .category-section {
            display: flex;
            background: var(--light);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .category-list {
            flex: 0 0 250px;
            background: var(--primary);
            padding: 30px 0;
        }

        .category-item {
            padding: 15px 30px;
            color: white;
            cursor: pointer;
            transition: var(--transition);
            border-left: 4px solid transparent;
        }

        .category-item:hover, .category-item.active {
            background: rgba(255,255,255,0.1);
            border-left: 4px solid var(--accent);
        }

        .category-content {
            flex: 1;
            padding: 30px;
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 25px;
        }

        .article-card {
            background: white;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }

        .article-img {
            height: 150px;
            background-size: cover;
            background-position: center;
        }

        .article-content {
            padding: 20px;
        }

        .article-content h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .article-content a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
        }

        .article-content a:hover {
            color: var(--primary);
        }

        /* 研究所简介 */
        .about-section {
            background: white;
            position: relative;
        }

        .about-container {
            display: flex;
            gap: 50px;
            align-items: center;
        }

        .about-content {
            flex: 1;
        }

        .about-content h3 {
            font-size: 1.8rem;
            margin-bottom: 25px;
            color: var(--secondary);
        }

        .about-content p {
            margin-bottom: 25px;
        }

        .lab-slider {
            flex: 1;
            height: 400px;
            position: relative;
            overflow: hidden;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .lab-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0;
            transition: opacity 1s ease;
        }

        .lab-slide.active {
            opacity: 1;
        }

        /* 荣誉资质 */
        .honor-section {
            background: var(--light);
        }

        .honor-slider {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            gap: 30px;
            overflow-x: auto;
            padding: 20px 0;
            scrollbar-width: none;
        }

        .honor-slider::-webkit-scrollbar {
            display: none;
        }

        .honor-item {
            flex: 0 0 280px;
            height: 415px;
            background: white;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .honor-img {
            height: 380px;
            background-size: cover;
            background-position: center;
        }

        .honor-content {
            padding: 5px;
            text-align: center;
        }

        .honor-content h3 {
            margin-bottom: 10px;
            color: var(--primary);
        }

        /* 合作伙伴 */
        .partners-section {
            background: white;
        }

        .partners-container {
            max-width: 1000px;
            margin: 0 auto;
            background: var(--light);
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .partners-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .partner-logo {
            height: 80px;
            background: white;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .partner-logo:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
        }

        /* 底部区域 */
        footer {
            background: var(--secondary);
            color: white;
            padding: 70px 5% 30px;
        }

        .footer-container {
            max-width: 1600px;
            margin: 0 auto;
            display: flex;
            gap: 50px;
        }

        .footer-left {
            flex: 1;
        }

        .footer-right {
            flex: 1;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .footer-col h3 {
            font-size: 1.3rem;
            margin-bottom: 25px;
            position: relative;
        }

        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--accent);
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col a {
            color: #ffffff;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: white;
            padding-left: 30px;
        }

        .contact-info-footer {
            margin-top: 25px;
        }

        .contact-info-footer div {
            display: flex;
            margin-bottom: 15px;
        }

        .contact-info-footer i {
            margin-right: 10px;
            color: var(--accent);
        }

        .footer-btn {
            background: var(--accent);
            color: white;
            padding: 12px 25px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            margin-top: 15px;
            transition: var(--transition);
        }

        .footer-btn:hover {
            background: #e67e22;
            transform: translateY(-2px);
        }

        .copyright {
            text-align: center;
            padding-top: 40px;
            margin-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #999;
            font-size: 0.9rem;
        }

        /* 响应式设计 */
        @media (max-width: 1200px) {
            .category-content {
                grid-template-columns: repeat(4, 1fr);
            }
            
            .partners-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (max-width: 992px) {
            .mega-container {
                flex-direction: column;
            }
            
            .about-container {
                flex-direction: column;
            }
            
            .lab-slider {
                width: 100%;
            }
            
            .category-content {
                grid-template-columns: repeat(3, 1fr);
            }
            
            .footer-container {
                flex-direction: column;
            }
            
            .footer-right {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-container {
                height: auto;
                padding: 15px 0;
                flex-direction: column;
            }
            
            nav ul {
                flex-wrap: wrap;
                justify-content: center;
                margin-top: 15px;
            }
            
            nav li {
                margin: 5px;
            }
            
            .mega-menu {
                position: static;
                display: none;
                padding: 15px;
            }
            
            .banner-content {
                left: 5%;
                max-width: 90%;
            }
            
            .banner-content h1 {
                font-size: 2.5rem;
            }
            
            .announcement-box {
                right: 20px;
                left: 20px;
                max-width: none;
            }
            
            .category-section {
                flex-direction: column;
            }
            
            .category-list {
                flex: auto;
                display: flex;
                flex-wrap: wrap;
                padding: 15px;
            }
            
            .category-item {
                border-left: none;
                border-bottom: 3px solid transparent;
                padding: 10px 15px;
            }
            
            .category-item:hover, .category-item.active {
                border-left: none;
                border-bottom: 3px solid var(--accent);
            }
            
            .category-content {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .partners-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            
            .footer-right {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 576px) {
            .nav-right {
                margin-top: 15px;
                flex-direction: column;
                align-items: center;
            }
            
            .contact-info {
                margin-right: 0;
                margin-bottom: 15px;
            }
            
            .banner-content h1 {
                font-size: 2rem;
            }
            
            .category-content {
                grid-template-columns: 1fr;
            }
            
            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .fa-solid, .fas{
        padding-right:5px;
        }



                .container {
                    max-width: 1600px;
                    margin: 0 auto;
                    background: #fff;
                    border-radius: 10px;
                    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
                    overflow: hidden;
                    padding: 30px;
                    margin-top: 100px;
                    margin-bottom: 50px;
                }

                .header {
                    text-align: center;
                    margin-bottom: 40px;
                    padding-bottom: 20px;
                    border-bottom: 1px solid #eee;
                }

                .header h1 {
                    font-size: 2.5rem;
                    color: #2c3e50;
                    margin-bottom: 10px;
                    font-weight: 600;
                }

                .header p {
                    color: #7f8c8d;
                    font-size: 1.1rem;
                }

                .article-list {
                    display: flex;
                    flex-direction: column;
                    gap: 30px;
                    margin-bottom: 50px;
                }

                .article-item {
                    display: flex;
                    background: #fff;
                    border-radius: 8px;
                    overflow: hidden;
                    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
                    transition: all 0.3s ease;
                    border: 1px solid #eee;
                }

                .article-item:hover {
                    transform: translateY(-5px);
                    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
                    border-color: #e0e0e0;
                }

                .article-thumb {
                    flex: 0 0 350px;
                    overflow: hidden;
                }

                .article-thumb img {
                    width: 100%;
                    height: 100%;
                    object-fit: cover;
                    transition: transform 0.5s ease;
                }

                .article-item:hover .article-thumb img {
                    transform: scale(1.05);
                }

                .article-content {
                    flex: 1;
                    padding: 5px;
                    display: flex;
                    flex-direction: column;
                    justify-content: space-between;
                    padding-left: 20px;
                    padding: 10px;
                }

                .article-title {
                    font-size: 1.6rem;
                    color: #2c3e50;
                    margin-bottom: 15px;
                    font-weight: 600;
                    line-height: 1.3;
                }

                .article-title a {
                    color: inherit;
                    text-decoration: none;
                    transition: color 0.3s;
                }

                .article-title a:hover {
                    color: #3498db;
                }

                .article-excerpt {
                    color: #555;
                    font-size: 1.05rem;
                    line-height: 1.7;
                    margin-bottom: 20px;
                    flex-grow: 1;
                }

                .article-meta {
                    display: flex;
                    justify-content: space-between;
                    align-items: center;
                    color: #7f8c8d;
                    font-size: 0.95rem;
                    padding-top: 15px;
                    border-top: 1px solid #f0f0f0;
                }

                .article-date {
                    display: flex;
                    align-items: center;
                }

                .article-date i {
                    margin-right: 8px;
                    color: #3498db;
                }

                .article-category {
                    background: #e3f2fd;
                    color: #1976d2;
                    padding: 5px 12px;
                    border-radius: 30px;
                    font-size: 0.85rem;
                }

                /* 分页样式 */
                .pagination {
                    display: flex;
                    justify-content: center;
                    margin-top: 40px;
                    padding-top: 20px;
                    border-top: 1px solid #eee;
                }

                .page-numbers {
                    display: flex;
                    list-style: none;
                    gap: 8px;
                }

                .page-numbers li {
                    display: flex;
                    align-items: center;
                    justify-content: center;
                }

                .page-numbers a,
                .page-numbers span {
                    display: block;
                    min-width: 40px;
                    height: 40px;
                    line-height: 40px;
                    text-align: center;
                    color: #2c3e50;
                    text-decoration: none;
                    border-radius: 5px;
                    font-weight: 500;
                    transition: all 0.3s;
                }

                .page-numbers a:hover {
                    background: #3498db;
                    color: white;
                }

                .page-numbers .current {
                    background: #3498db;
                    color: white;
                }

                .page-numbers .dots {
                    pointer-events: none;
                }

                .prev, .next {
                    padding: 0 15px;
                    font-weight: 500;
                }

                /* 响应式设计 */
                @media (max-width: 768px) {
                    .container {
                        padding: 15px;
                    }

                    .header h1 {
                        font-size: 2rem;
                    }

                    .article-item {
                        flex-direction: column;
                    }

                    .article-thumb {
                        flex: 0 0 200px;
                        width: 100%;
                    }

                    .article-content {
                        padding: 20px;
                    }

                    .article-title {
                        font-size: 1.4rem;
                    }

                    .article-meta {
                        flex-direction: column;
                        align-items: flex-start;
                        gap: 10px;
                    }
                }

                @media (max-width: 480px) {
                    .page-numbers a,
                    .page-numbers span {
                        min-width: 35px;
                        height: 35px;
                        line-height: 35px;
                        font-size: 0.9rem;
                    }

                    .prev, .next {
                        padding: 0 10px;
                    }
                }

                /* 加载动画 */
                @keyframes fadeIn {
                    from { opacity: 0; transform: translateY(20px); }
                    to { opacity: 1; transform: translateY(0); }
                }

                .article-item {
                    animation: fadeIn 0.5s ease forwards;
                }

                .article-item:nth-child(1) { animation-delay: 0.1s; }
                .article-item:nth-child(2) { animation-delay: 0.2s; }
                .article-item:nth-child(3) { animation-delay: 0.3s; }
                .article-item:nth-child(4) { animation-delay: 0.4s; }
                .article-item:nth-child(5) { animation-delay: 0.5s; }

                .logoimg{
                height:60px;
                }








                                .content-body {
                                    background-color: #f8f9fa;
                                    color: #333;
                                    line-height: 1.7;
                                    /*padding: 20px;*/
                                }

                                .content-container {
                                    max-width: 1200px;
                                    margin: 0 auto;
                                    background: #fff;
                                    border-radius: 12px;
                                    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
                                    overflow: hidden;
                                    position: relative;
                                    margin-top: 100px;
                                    margin-bottom: 50px;
                                }

                                /* 文章头部 */
                                .content-header {
                                    display: flex;
                                    padding: 40px;
                                    gap: 40px;
                                    background: linear-gradient(135deg, #ffffff 0%, #ffffff 100%);
                                    border-bottom: 1px solid #eaeaea;
                                }

                                .content-thumb {
                                    flex: 0 0 30%;
                                    border-radius: 8px;
                                    overflow: hidden;
                                    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
                                    transition: all 0.4s ease;
                                }

                                .content-thumb:hover {
                                    transform: translateY(-5px) scale(1.02);
                                    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
                                }

                                .content-thumb img {
                                    width: 100%;
                                    height: 100%;
                                    object-fit: cover;
                                    display: block;
                                }

                                .content-info {
                                    flex: 1;
                                    display: flex;
                                    flex-direction: column;
                                }

                                .content-title {
                                    font-size: 2.5rem;
                                    color: #2c3e50;
                                    margin-bottom: 10px;
                                    line-height: 1.3;
                                    font-weight: 700;
                                    text-align: center;
                                }

                                .content-meta {
                                    display: flex;
                                    gap: 25px;
                                    margin-bottom: 10px;
                                    flex-wrap: wrap;
                                }

                                .meta-item {
                                    display: flex;
                                    align-items: center;
                                    font-size: 1rem;
                                    color: #5e6d82;
                                }

                                .meta-item i {
                                    margin-right: 8px;
                                    color: #3498db;
                                    font-size: 1.1rem;
                                }

                                .content-excerpt {
                                    font-size: 1.15rem;
                                    color: #455a64;
                                    line-height: 1.8;
                                    margin-bottom: 10px;
                                    padding: 5px 10px;
                                    background: rgba(236, 240, 241, 0.4);
                                    border-left: 4px solid #3498db;
                                    border-radius: 0 8px 8px 0;
                                }

                                .content-actions {
                                    display: flex;
                                    gap: 20px;
                                    margin-top: auto;
                                }

                                .content-btn {
                                    flex: 1;
                                    padding: 15px 25px;
                                    font-size: 1.05rem;
                                    border-radius: 8px;
                                    text-align: center;
                                    text-decoration: none;
                                    font-weight: 600;
                                    cursor: pointer;
                                    transition: all 0.3s ease;
                                    display: flex;
                                    align-items: center;
                                    justify-content: center;
                                }

                                .content-btn-primary {
                                    background: linear-gradient(135deg, #3498db, #2980b9);
                                    color: white;
                                    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
                                }

                                .content-btn-primary:hover {
                                    transform: translateY(-3px);
                                    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.4);
                                    background: linear-gradient(135deg, #2980b9, #3498db);
                                }

                                .content-btn-outline {
                                    border: 2px solid #3498db;
                                    color: #3498db;
                                    background: transparent;
                                }

                                .content-btn-outline:hover {
                                    background: rgba(52, 152, 219, 0.1);
                                    transform: translateY(-3px);
                                }

                                .content-btn i {
                                    margin-right: 10px;
                                }

                                /* 文章内容区域 */
                                .content-main {
                                    padding: 50px 40px;
                                    font-size: 1.1rem;
                                    color: #2c3e50;
                                }

                                .content-section {
                                    margin-bottom: 50px;
                                }

                                .content-section h2 {
                                    font-size: 1.8rem;
                                    color: #2c3e50;
                                    margin-bottom: 25px;
                                    padding-bottom: 12px;
                                    border-bottom: 2px solid #eaeaea;
                                    position: relative;
                                }

                                .content-section h2::after {
                                    content: '';
                                    position: absolute;
                                    left: 0;
                                    bottom: -2px;
                                    width: 100px;
                                    height: 2px;
                                    background: #3498db;
                                }

                                .content-section p {
                                    margin-bottom: 20px;
                                    line-height: 1.8;
                                }

                                .content-section ul,
                                .content-section ol {
                                    padding-left: 30px;
                                    margin-bottom: 25px;
                                }

                                .content-section li {
                                    margin-bottom: 12px;
                                    position: relative;
                                    padding-left: 15px;
                                    line-height: 1.7;
                                }

                                .content-section ul li::before {
                                    content: '';
                                    position: absolute;
                                    left: 0;
                                    top: 10px;
                                    width: 6px;
                                    height: 6px;
                                    background: #3498db;
                                    border-radius: 50%;
                                }

                                .content-section ol {
                                    counter-reset: section;
                                }

                                .content-section ol li {
                                    counter-increment: section;
                                }

                                .content-section ol li::before {
                                    content: counter(section) '. ';
                                    position: absolute;
                                    left: 0;
                                    color: #3498db;
                                    font-weight: bold;
                                }

                                .content-highlight {
                                    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
                                    border-left: 4px solid #3498db;
                                    padding: 20px;
                                    border-radius: 0 8px 8px 0;
                                    margin: 25px 0;
                                    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
                                }

                                /* 文章导航 */
                                .content-nav {
                                    display: flex;
                                    justify-content: space-between;
                                    padding: 40px;
                                    border-top: 1px solid #eee;
                                    background: #f8fafc;
                                }

                                .nav-item {
                                    flex: 0 0 48%;
                                    padding: 20px;
                                    border-radius: 8px;
                                    text-decoration: none;
                                    color: #2c3e50;
                                    transition: all 0.3s ease;
                                    display: flex;
                                    align-items: center;
                                    background: #fff;
                                    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
                                    border: 1px solid #eee;
                                }

                                .nav-item:hover {
                                    transform: translateY(-5px);
                                    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
                                    border-color: #3498db;
                                }

                                .nav-prev .nav-icon {
                                    margin-right: 15px;
                                    color: #3498db;
                                    font-size: 1.5rem;
                                }

                                .nav-next .nav-icon {
                                    margin-left: 15px;
                                    color: #3498db;
                                    font-size: 1.5rem;
                                }

                                .nav-text {
                                    flex: 1;
                                }

                                .nav-text span {
                                    display: block;
                                    font-size: 0.9rem;
                                    color: #7f8c8d;
                                    margin-bottom: 5px;
                                }

                                .nav-text h3 {
                                    font-size: 1.2rem;
                                    line-height: 1.4;
                                }

                                /* 响应式设计 */
                                @media (max-width: 992px) {
                                    .content-header {
                                        flex-direction: column;
                                    }

                                    .content-thumb {
                                        margin-bottom: 25px;
                                    }

                                    .content-title {
                                        font-size: 2rem;
                                    }
                                }

                                @media (max-width: 768px) {
                                    .content-container {
                                        border-radius: 0;
                                    }

                                    .content-header,
                                    .content-main,
                                    .content-nav {
                                        padding: 30px;
                                    }

                                    .content-title {
                                        font-size: 1.8rem;
                                    }

                                    .content-meta {
                                        flex-direction: column;
                                        gap: 12px;
                                    }

                                    .content-actions {
                                        flex-direction: column;
                                        gap: 15px;
                                    }

                                    .content-nav {
                                        flex-direction: column;
                                        gap: 20px;
                                    }

                                    .nav-item {
                                        flex: 0 0 100%;
                                    }
                                }

                                @media (max-width: 480px) {
                                    .content-header,
                                    .content-main,
                                    .content-nav {
                                        padding: 20px;
                                    }

                                    .content-title {
                                        font-size: 1.6rem;
                                    }

                                    .content-section h2 {
                                        font-size: 1.5rem;
                                    }

                                    .content-btn {
                                        padding: 12px 20px;
                                        font-size: 1rem;
                                    }
                                }

                                /* 动画效果 */
                                @keyframes fadeInUp {
                                    from {
                                        opacity: 0;
                                        transform: translateY(30px);
                                    }
                                    to {
                                        opacity: 1;
                                        transform: translateY(0);
                                    }
                                }

                                .content-header,
                                .content-main,
                                .content-nav {
                                    animation: fadeInUp 0.6s ease-out forwards;
                                }

                                .content-main {
                                    animation-delay: 0.1s;
                                }

                                .content-nav {
                                    animation-delay: 0.2s;
                                }

                                /* 特效元素 */
                                .content-decoration {
                                    position: absolute;
                                    z-index: 0;
                                }

                                .content-decoration.circle {
                                    width: 200px;
                                    height: 200px;
                                    border-radius: 50%;
                                    background: linear-gradient(135deg, rgba(52, 152, 219, 0.1), rgba(41, 128, 185, 0.05));
                                    top: -100px;
                                    right: -100px;
                                }

                                .content-decoration.rectangle {
                                    width: 150px;
                                    height: 150px;
                                    background: linear-gradient(135deg, rgba(52, 152, 219, 0.08), rgba(41, 128, 185, 0.03));
                                    bottom: -75px;
                                    left: -75px;
                                    transform: rotate(45deg);
                                }

                                /* 内容区域动画 */
                                .content-section {
                                    opacity: 0;
                                    transform: translateY(20px);
                                    transition: all 0.6s ease-out;
                                }
/* 基础样式重置 */
        .content-main * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            line-height: 1.6;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }

        /* 内容容器样式 */
        .content-main {
            max-width: 1200px;
            margin: 10px auto;
            background: linear-gradient(135deg, #ffffff 0%, #f8fbff 100%);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 40px rgba(49, 146, 210, 0.15);
            padding: 0 20px;
            position: relative;
            border: 1px solid #e1f0ff;
            padding-top: 20px;
        }

        /* 添加装饰元素 */
        .content-main::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, #3192d2, #4da9e9, #3192d2);
            z-index: 10;
        }

        /* H2标题样式 */
        .content-main h2 {
            color: #1a7ab5;
            font-size: 26px;
            margin: 20px 0 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid #e6f2ff;
            position: relative;
            font-weight: 700;
            display: flex;
            align-items: center;
        }

        .content-main h2::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 80px;
            height: 3px;
            background: #3192d2;
            border-radius: 3px;
        }

        .content-main h2 i {
            background: #e6f2ff;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            color: #3192d2;
            font-size: 20px;
        }

 /* 核心优化：段落样式 */
        .content-main p {
            /* 基础样式 */
            margin-bottom: 2.2rem;
            text-align: justify;
            color: #2d3436;
            line-height: 1.85;
            position: relative;


            /* 增强可读性 */
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }
         .content-main dd {
             /* 基础样式 */
             margin-bottom: 0.8rem;
             text-align: justify;
             color: #2d3436;
             line-height: 1.85;
             position: relative;


             /* 增强可读性 */
             text-rendering: optimizeLegibility;
             -webkit-font-smoothing: antialiased;
         }
         .content-main dt {
             /* 基础样式 */
             margin-bottom: 0.3rem;
             text-align: justify;
             color: #2d3436;
             line-height: 1.85;
             position: relative;


             /* 增强可读性 */
             text-rendering: optimizeLegibility;
             -webkit-font-smoothing: antialiased;
             font-weight: bolder;
         }



        /* 英文段落特殊样式 */
        .content-main p:nth-of-type(3) {
            font-style: italic;
            color: #555;
            background: #f9f9f9;
            padding: 25px 30px;
            border-left: 4px solid #3498db;
            border-radius: 0 10px 10px 0;
            box-shadow: inset 5px 0 15px rgba(0,0,0,0.03);
        }

        /* 问答部分样式 */
        .content-main strong {
            color: #1a6da3;
            display: block;
            margin-bottom: 12px;
            font-size: 18px;
            background: #f0f8ff;
            padding: 5px 10px;
            border-radius: 10px;
            border-left: 4px solid #3192d2;
            position: relative;
        }

        .content-main strong::before {
            background: #3192d2;
            color: white;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            font-weight: bold;
        }

        .content-main strong + br + * {
            display: block;
            margin-left: 50px;
            background: #f8fbff;
            padding: 18px 25px;
            border-radius: 10px;
            margin-bottom: 25px;
            position: relative;
            border: 1px solid #e1f0ff;
            color: #445d76;
            font-size: 17px;
        }

        .content-main strong + br + *::before {
            background: #4da9e9;
            color: white;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            font-weight: bold;
            position: absolute;
            left: -16px;
            top: 50%;
            transform: translateY(-50%);
        }

        /* 列表样式 */
        .content-main ul {
            list-style: none;
            padding: 0;
            margin: 25px 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 18px;
            counter-reset: list-counter;
        }

        .content-main li {
            background: #f8fbff;
            padding: 10px 10px 10px 50px;
            border-radius: 10px;
            position: relative;
            transition: all 0.3s ease;
            border: 1px solid #e1f0ff;
            color: #445d76;
            font-size: 16px;
        }

        .content-main li:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 20px rgba(49, 146, 210, 0.15);
            background: #ffffff;
            border-color: #b8dcfa;
        }

        .content-main li::before {
            content: counter(list-counter);
            counter-increment: list-counter;
            position: absolute;
            left: 10px;
            top: 50%;
            transform: translateY(-50%);
            width: 32px;
            height: 32px;
            background: #e6f2ff;
            color: #3192d2;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 16px;
        }

        /* 检测仪器特殊样式 */
        .content-main > h2:nth-last-of-type(1) + ul li {
            background: linear-gradient(135deg, #e6f2ff 0%, #d4e7ff 100%);
            padding: 25px 20px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .content-main > h2:nth-last-of-type(1) + ul li::before {
            position: static;
            transform: none;
            margin-bottom: 15px;
            width: 50px;
            height: 50px;
            font-size: 20px;
            background: rgba(255, 255, 255, 0.7);
        }

        /* 响应式设计 */
        @media (max-width: 900px) {
            .content-main ul {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .content-main {
                padding: 25px;
                margin: 20px;
            }

            .content-main ul {
                grid-template-columns: 1fr;
            }

            .content-main h2 {
                font-size: 24px;
                margin-top: 35px;
            }

            .content-main strong {
                font-size: 17px;
            }
              .content-main p {
                            /* padding-left: 1.8em; */
                            font-size: 1.1rem;
                            text-indent: 1.8em;
                        }

                      /*  .content-main p:first-of-type:first-letter {
                            font-size: 3.2rem;
                        }*/
                                   .content-main dd {
                                                 /* padding-left: 1.8em; */
                                                 font-size: 1.1rem;
                                                 text-indent: 1.8em;
                                             }
                                                           .content-main dt {
                                                                         /* padding-left: 1.8em; */
                                                                         font-size: 1.1rem;
                                                                         text-indent: 1.8em;
                                                                     }

        }

        /* 页眉装饰 */
        .page-header {
            text-align: center;
            padding: 25px 0 35px;
        }

        .page-header h1 {
            color: #3192d2;
            font-size: 40px;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .page-header h1::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #3192d2, #4da9e9);
            border-radius: 2px;
        }

        .page-header p {
            color: #5a7a9a;
            max-width: 800px;
            margin: 25px auto 0;
            font-size: 18px;
            line-height: 1.8;
        }
        
        .pczz{
            line-height: 0;
        }