:root {
            --primary-color: #2563eb;
            --secondary-color: #1e40af;
            --accent-color: #e63946;
            --text-color: #333333;
            --text-light: #666;
            --white: #fff;
        } 
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
        }
        
        body {
            color: var(--text-color);
            line-height: 1.6;
            background-color: #f8fafc;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 顶部导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 15px 0;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            transition: background-color 0.3s ease;
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 40px;
            width: auto;
            max-width: 100%;
        }
        
        .nav-icons {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        
        .nav-icons i {
            font-size: 1.2rem;
            color: var(--text-light);
            cursor: pointer;
        }
        
        /* 客服弹窗样式 */
        .contact-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.7);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }
        
        .contact-container {
            width: 80%;
            max-width: 400px;
            background: white;
            padding: 30px;
            border-radius: 8px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }
        
        .contact-title {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: #333;
            font-weight: bold;
        }
        
        .contact-qr {
            width: 100%;
            max-width: 250px;
            margin: 0 auto 20px;
            border: 1px solid #eee;
        }
        
        .contact-tip {
            color: #666;
            margin-bottom: 20px;
        }
        
        .contact-button {
            background-color: #2563eb;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s;
        }
        
        .contact-button:hover {
            background-color: #1e40af;
        }

        /* 搜索弹窗样式 */
        .search-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.7);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }
        
        .search-container {
            width: 80%;
            max-width: 600px;
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }
        
        .search-input-group {
            display: flex;
            width: 100%;
        }
        
        .search-input {
            flex: 1;
            padding: 15px;
            font-size: 1.2rem;
            border: 2px solid #ddd;
            border-top-left-radius: 4px;
            border-bottom-left-radius: 4px;
            border-right: none;
            outline: none;
        }
        
        .search-input:focus {
            border-color: var(--primary-color);
        }
        
        .search-button {
            padding: 0 20px;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-top-right-radius: 4px;
            border-bottom-right-radius: 4px;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        
        .search-button:hover {
            background-color: var(--secondary-color);
        }
        
        /* 主标题区 */
        .hero {
            padding: 180px 0 40px;
            text-align: center;
        }
        
        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: var(--white);
        }
        
        .hero p {
            font-size: 1.1rem;
            color: var(--white);
            margin-bottom: 30px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .cta-button {
            display: inline-block;
            padding: 12px 30px;
            background-color: var(--text-color);
            color: var(--white);
            border-radius: 4px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .cta-button:hover {
            background-color: var(--primary-color);
            transform: translateY(-2px);
        }
        
        /* 内容导航栏 */
        .content-nav {
            display: flex;
            justify-content: center;
            margin: 30px 0;
            border-bottom: 1px solid #eee;
        }
        
        .search-bar {
            display: flex;
            width: 100%;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .search-bar .search-input {
            flex: 1;
            padding: 12px 20px;
            border: 2px solid #ddd;
            border-right: none;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
            outline: none;
        }
        
        .search-bar .search-btn {
            padding: 0 20px;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        
        .search-bar .search-btn:hover {
            background-color: var(--secondary-color);
        }
        
        /* 主要内容区 */
        .content-section {
            padding: 40px 0;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        
        .section-header h2 {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }
        
        .section-header p {
            color: var(--text-light);
        }
        
        .guide-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            max-width: 1200px;
            margin: 0 auto;
        }

        @media (max-width: 1024px) {
            .guide-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .guide-cards {
                grid-template-columns: 1fr;
            }
            .video-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 15px;
            }
            .video-card {
                margin-bottom: 15px;
            }
        }
        
        .guide-card {
            background-color: var(--white);
            border-radius: 8px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .guide-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
        }
        
        .guide-card p {
            color: var(--text-light);
            margin-bottom: 20px;
        }
        
        .guide-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }
        
        .guide-link i {
            margin-left: 5px;
        }
        /* 精选视频区样式 */
        .featured-videos {
            background-color: #fff;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-header h2 {
            font-size: 2.2rem;
            color: var(--dark-color);
        }
        
        .video-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .video-card {
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease;
        }
        
        .video-card:hover {
            transform: translateY(-10px);
        }
        
        .video-thumbnail {
            height: 200px;
            background-color: #eee;
            position: relative;
        }
        
        .video-thumbnail img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .play-icon {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            background-color: rgb(197 218 245 / 60%);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
        }
        
        .video-info {
            padding: 20px;
        }
        
        .video-info h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        
        .video-meta {
            display: flex;
            justify-content: space-between;
            color: var(--text-light);
            font-size: 0.9rem;
        }
        
        .view-all {
            text-align: center;
            margin-top: 40px;
        }
        
        .view-all a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }
        /* 宣传板块样式 */
        .promo-section {
            background-color: #f5f7fa;
            padding: 60px 0;
        }

        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        @media (max-width: 768px) {
            .promo-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .promo-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .video-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .video-thumbnail {
                height: 150px;
            }
            .video-info h3 {
                font-size: 1rem;
            }
            .video-info p {
                font-size: 0.9rem;
            }
        }

        .promo-item {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease;
        }

        .promo-item:hover {
            transform: translateY(-5px);
        }

        .promo-image {
            height: 180px;
            width: 100%;
        }

        .promo-content {
            padding: 20px;
        }

        .promo-content h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--text-color);
        }

        .promo-content p {
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .promo-time {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        /* 页脚样式 */
        footer {
            background-color: #1a1a1a;
            color: white;
            padding: 60px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        @media (max-width: 768px) {
            .footer-content {
                display: block;
            }
            
            .footer-column {
                width: 100%;
                text-align: left;
                padding: 15px;
                margin-bottom: 20px;
            }
            
            .footer-column ul {
                text-align: left;
                padding-left: 0;
            }
            
            .footer-column li {
                margin-left: 0;
            }
        }
        
        .footer-column h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column li {
            margin-bottom: 10px;
        }
        
        .footer-column a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        .footer-column a:hover {
            color: white;
        }
        
        .social-links {
            display: flex;
            gap: 15px;
        }
        
        .social-links a {
            color: white;
            font-size: 1.2rem;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }
        
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }

        /* CTA 行动号召区样式 */
        section.cta {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)) !important;
            color: white !important;
            padding: 100px 0 !important;
            text-align: center !important;
            margin: 0 !important;
        }
        
        section.cta .container {
            max-width: 800px !important;
        }
        
        section.cta h2 {
            font-size: 2.8rem !important;
            margin-bottom: 25px !important;
            color: white !important;
            font-weight: 700 !important;
            line-height: 1.2 !important;
        }
        
        section.cta p {
            font-size: 1.3rem !important;
            margin-bottom: 40px !important;
            color: rgba(255,255,255,0.9) !important;
            max-width: 600px !important;
            margin-left: auto !important;
            margin-right: auto !important;
        }
        
        .cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-top: 20px;
        }
        
        section.cta .btn {
            background-color: white !important;
            color: var(--primary-color) !important;
            font-size: 1.2rem !important;
            padding: 18px 45px !important;
            border-radius: 6px !important;
            font-weight: 600 !important;
            letter-spacing: 0.5px !important;
            transition: all 0.3s ease !important;
        }
        
        section.cta .btn-gray {
            background-color: #6b7280 !important;
            color: white !important;
        }
        
        section.cta .btn:hover {
            background-color: var(--light-color) !important;
            transform: translateY(-5px) !important;
            box-shadow: 0 10px 20px rgba(0,0,0,0.2) !important;
        }
        /* 弹窗样式 */
        .popup-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0,0,0,0.5);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            display: none;
        }
        
        .popup-content {
            background-color: white;
            padding: 30px;
            border-radius: 8px;
            width: 90%;
            max-width: 600px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            text-align: center;
        }
        
        .popup-title {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: #333;
            font-weight: bold;
        }
        
        .popup-message {
            margin-bottom: 20px;
            color: #666;
        }
        
        .popup-button {
            background-color: #2563eb;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s;
        }
        
        .popup-button:hover {
            background-color: #1e40af;
        }
        
        .popup-checkbox {
            margin: 15px 0;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .popup-checkbox input {
            margin-right: 8px;
        }
    
        /* 滑动菜单基础样式 */
        .menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .sliding-menu {
            position: fixed;
            top: 0;
            right: -300px;
            width: 300px;
            height: 100%;
            background-color: #1a1a1a;
            color: white;
            z-index: 1000;
            transition: all 0.3s ease;
            padding: 20px;
            overflow-y: auto;
        }

        .menu-header {
            padding: 20px 0;
            margin-bottom: 20px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .menu-close-btn {
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .menu-close-btn:hover {
            transform: rotate(90deg);
        }

        .menu-logo {
            font-size: 1.2rem;
            font-weight: bold;
            color: white;
        }

        .sliding-menu ul {
            list-style: none;
            padding: 0;
            margin-bottom: 30px;
        }

        .sliding-menu li {
            margin-bottom: 15px;
        }

        .sliding-menu li a {
            color: white;
            text-decoration: none;
            font-size: 1.1rem;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
        }

        .sliding-menu li a i {
            margin-right: 10px;
            font-size: 0.8rem;
        }

        .sliding-menu li.active a {
            background-color: rgba(255,255,255,0.1);
            padding: 8px 12px;
            border-radius: 4px;
        }

        .contact-info h3 {
            color: white;
            margin-bottom: 15px;
            text-transform: uppercase;
            font-size: 1rem;
            letter-spacing: 1px;
        }

        .contact-info p {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 10px;
            font-size: 0.9rem;
        }

        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-icons a {
            color: white;
            font-size: 1.2rem;
        }

        .menu-active .menu-overlay {
            opacity: 1;
            visibility: visible;
        }

        .menu-active .sliding-menu {
            right: 0;
        }