/* 全局样式重置和基础设置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary-color: #1a1a1a;
            --secondary-color: #f5f5f7;
            --accent-color: #0066cc;
            --text-color: #1d1d1f;
            --light-text: #86868b;
            --border-color: #d2d2d7;
            --max-width: 100vw;
            --header-height: 4.2em;
            --container-padding: 5%;
            
            /* 新增背景颜色变量 */
            --bg-light: #fbfbfd;
            --bg-lighter: #f5f5f7;
            --bg-white: #ffffff;
        }
        
        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-color);
            line-height: 1.6;
            background-color: #fff;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        
        ul {
            list-style: none;
        }
        
        .container {
            width: 100%;
            max-width: var(--max-width);
            padding: 0 var(--container-padding);
            margin: 0 auto;
        }
        
        .section-title {
            font-size: 2.5em;
            font-weight: 600;
            text-align: center;
            margin-bottom: 1.5em;
            letter-spacing: -0.02em;
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.8s ease;
        }
        
        .section-title.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.8em 1.8em;
            background-color: var(--accent-color);
            color: white;
            border-radius: 0.5em;
            font-weight: 500;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            gap: 0.5em;
        }
        
        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.6s ease;
        }
        
        .btn:hover::before {
            left: 100%;
        }
        
        .btn:hover {
            background-color: #004499;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 102, 204, 0.2);
        }
        
        .btn-outline {
            background-color: transparent;
            border: 1px solid var(--accent-color);
            color: var(--accent-color);
        }
        
        .btn-outline:hover {
            background-color: var(--accent-color);
            color: white;
        }
        
        /* 主导航栏 */
        .main-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid var(--border-color);
            z-index: 999;
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: all 0.3s ease;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }
        
        .main-nav {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: relative;
        }
        
        .logo-container {
            display: flex;
            align-items: center;
            position: relative;
            z-index: 1000;
        }
        
        .logo-icon {
            width: 2.8em;
            height: 2.8em;
            background: linear-gradient(135deg, var(--accent-color), #004499);
            border-radius: 0.6em;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 0.8em;
            font-weight: 800;
            color: white;
            font-size: 1.2em;
            box-shadow: 0 4px 12px rgba(0, 102, 204, 0.25);
            position: relative;
            overflow: hidden;
        }
        
        .logo-icon::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(to bottom right, rgba(255,255,255,0.3) 0%, rgba(255,255,255,0) 80%);
            transform: rotate(30deg);
        }
        
        .logo-text {
            font-size: 1.6em;
            font-weight: 700;
            color: var(--primary-color);
            letter-spacing: -0.01em;
        }
        
        /* 新导航样式 */
        .nav-links {
            display: flex;
            align-items: center;
        }
        
        .nav-item {
            position: relative;
            margin-right: 1.8em;
            font-weight: 500;
            font-size: 0.95em;
        }
        
        .nav-link {
            display: flex;
            align-items: center;
            gap: 0.5em;
            padding: 0.5em 0;
            position: relative;
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-color), #004499);
            transition: width 0.3s ease;
        }
        
        .nav-item:hover .nav-link::after {
            width: 100%;
        }
        
        /* 下拉菜单样式 - 居中显示 */
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(10px);
            width: 800px;
            background: white;
            border-radius: 0.8em;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
            padding: 2em;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 100;
            border: 1px solid rgba(210, 210, 215, 0.5);
            overflow: hidden;
        }
        
        .dropdown-menu::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
        }
        
        .nav-item:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        
        /* 确保下拉菜单不会超出屏幕 */
        .dropdown-menu {
            max-width: calc(100vw - 40px);
        }
        
        .dropdown-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 2em;
            padding-bottom: 1.5em;
            border-bottom: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .header-content {
            flex: 1;
        }
        
        .dropdown-title {
            font-size: 1.8em;
            font-weight: 700;
            margin-bottom: 0.5em;
            color: var(--primary-color);
        }
        
        .dropdown-desc {
            color: var(--accent-color);
            font-size: 0.95em;
            font-weight: 500;
        }
        
        .header-feature {
            flex: 1;
            text-align: right;
            padding-left: 2em;
        }
        
        .feature-text {
            color: var(--light-text);
            margin-bottom: 1em;
            font-size: 0.9em;
            line-height: 1.5;
        }
        
        .feature-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5em;
            color: var(--accent-color);
            font-weight: 500;
            font-size: 0.9em;
            padding: 0.5em 1em;
            border-radius: 0.4em;
            background: rgba(0, 102, 204, 0.05);
            transition: all 0.3s ease;
        }
        
        .feature-btn:hover {
            background: rgba(0, 102, 204, 0.1);
            transform: translateX(5px);
        }
        
        .dropdown-columns {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2em;
        }
        
        .dropdown-category {
            margin-bottom: 1.5em;
        }
        
        .category-title {
            display: flex;
            align-items: center;
            gap: 0.5em;
            font-size: 1.1em;
            font-weight: 600;
            margin-bottom: 1em;
            color: var(--primary-color);
            padding-bottom: 0.5em;
            border-bottom: 1px solid rgba(210, 210,215, 0.3);
        }
        
        .dropdown-links {
            display: flex;
            flex-direction: column;
            gap: 0.8em;
        }
        
        .dropdown-links a {
            display: flex;
            align-items: center;
            gap: 0.5em;
            padding: 0.6em;
            border-radius: 0.4em;
            color: var(--light-text);
            font-size: 0.9em;
            transition: all 0.3s ease;
        }
        
        .dropdown-links a:hover {
            color: var(--accent-color);
            background: rgba(0, 102, 204, 0.05);
            transform: translateX(5px);
        }
        
        /* 简化版下拉菜单 */
        .dropdown-simple {
            width: 600px;
        }
        
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1em;
            margin-top: 1.5em;
            padding-top: 1.5em;
            border-top: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .case-item {
            padding: 1em;
            background: rgba(0, 102, 204, 0.05);
            border-radius: 0.5em;
            text-align: center;
            font-weight: 500;
            color: var(--accent-color);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        .case-item:hover {
            background: rgba(0, 102, 204, 0.1);
            transform: translateY(-3px);
        }
        
        .nav-phone {
            display: flex;
            align-items: center;
            font-weight: 500;
            background: linear-gradient(135deg, var(--accent-color), #004499);
            color: white;
            padding: 0.7em 1em;
            border-radius: 0.5em;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .nav-phone::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.6s ease;
        }
        
        .nav-phone:hover::before {
            left: 100%;
        }
        
        .nav-phone:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 102, 204, 0.25);
        }
        
        .phone-icon {
            width: 1em;
            height: 1em;
            margin-right: 0.5em;
        }
        
        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 2em;
            height: 1.5em;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0;
            z-index: 1000;
        }
        
        .mobile-menu-btn span {
            width: 100%;
            height: 2px;
            background-color: var(--primary-color);
            border-radius: 1px;
            transition: all 0.3s ease;
        }
        
        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(0.65em) rotate(45deg);
        }
        
        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }
        
        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-0.65em) rotate(-45deg);
        }
        
        /* 移动端导航菜单 */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background-color: white;
            z-index: 998;
            padding-top: calc(var(--header-height) + 2em);
            overflow-y: auto;
            transform: translateX(-100%);
            transition: transform 0.4s ease;
        }
        
        .mobile-nav.active {
            transform: translateX(0);
        }
        
        .mobile-nav-list {
            padding: 1.5em;
        }
        
        .mobile-nav-item {
            border-bottom: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .mobile-nav-item a {
            display: block;
            padding: 1.2em 0;
            font-weight: 500;
            font-size: 1.1em;
        }
        
        .mobile-nav-item.has-dropdown > a {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .mobile-dropdown-toggle {
            width: 1.2em;
            height: 1.2em;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
        }
        
        .mobile-nav-item.active .mobile-dropdown-toggle {
            transform: rotate(180deg);
        }
        
        .mobile-dropdown-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding-left: 1em;
        }
        
        .mobile-nav-item.active .mobile-dropdown-menu {
            max-height: 500px;
        }
        
        .mobile-dropdown-item {
            padding: 0.8em 0;
            border-bottom: 1px solid rgba(210, 210, 215, 0.2);
        }
        
        .mobile-dropdown-item:last-child {
            border-bottom: none;
        }
        
        /* 移动端联系电话 */
        .mobile-phone {
            display: none;
            align-items: center;
            font-weight: 500;
            background: linear-gradient(135deg, var(--accent-color), #004499);
            color: white;
            padding: 0.6em 1em;
            border-radius: 0.5em;
            margin-left: auto;
            margin-right: 1em;
            position: relative;
            overflow: hidden;
        }
        
        .mobile-phone .phone-text {
            display: none;
        }
        
        /* 主体内容 */
        .main-content {
            margin-top: var(--header-height);
        }
        
        /* Banner部分 */
        .banner-section {
            height: 85vh;
            min-height: 600px;
            overflow: hidden;
            position: relative;
            background-color: #000;
        }
        
        .banner-container {
            width: 100%;
            height: 100%;
            position: relative;
        }
        
        .banner-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 1.5s ease;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-start;
            padding-left: var(--container-padding);
            background-size: cover;
            background-position: center;
        }
        
        .banner-slide.active {
            opacity: 1;
        }
        
        .banner-slide:nth-child(1) {
            background: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 100%), url('https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
        }
        
        .banner-slide:nth-child(2) {
            background: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 100%), url('https://images.unsplash.com/photo-1499951360447-b19be8fe80f5?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
        }
        
        .banner-slide:nth-child(3) {
            background: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 100%), url('https://images.unsplash.com/photo-1460925895917-afdab827c52f?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2026&q=80');
        }
        
        .banner-title {
            font-size: 2.6em;
            font-weight: 700;
            color: white;
            margin-bottom: 0.5em;
            line-height: 1.1;
            letter-spacing: 0.01em;
            max-width: 60%;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease 0.2s;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }
        
        .banner-title.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .banner-subtitle {
            font-size: 1.5em;
            color: rgba(255, 255, 255, 0.9);
            max-width: 50%;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease 0.4s;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        }
        
        .banner-subtitle.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .banner-dots {
            position: absolute;
            bottom: 2em;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 1em;
        }
        
        .banner-dot {
            width: 0.85em;
            height: 0.85em;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.3);
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .banner-dot::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background: white;
            transform: scale(0);
            transition: transform 0.3s ease;
        }
        
        .banner-dot.active::before {
            transform: scale(1);
        }
        
        .banner-dot.active {
            transform: scale(1.2);
            box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
        }
        
        .banner-notice {
            position: absolute;
            top: 50%;
            right: var(--container-padding);
            transform: translateY(-50%);
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 1em;
        }
        
        .notice-content {
            display: flex;
            align-items: center;
            background-color: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(15px);
            border-radius: 0.5em;
            padding: 0.9em 1.3em;
            color: white;
            font-size: 0.9em;
            min-width: 328px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            position: relative;
            overflow: hidden;
        }
        
        .notice-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(to bottom, var(--accent-color), #004499);
        }
        
        .notice-icon {
            margin-right: 0.8em;
            width: 1.2em;
            height: 1.2em;
        }
        
        .notice-text {
            flex: 1;
            overflow: hidden;
            height: 1.2em;
            position: relative;
        }
        
        .notice-track {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            transition: transform 0.5s ease;
        }
        
        .notice-item {
            height: 1.2em;
            display: flex;
            align-items: center;
            white-space: nowrap;
        }
        
        /* 成功案例部分 - 浅色背景 */
        .cases-section {
            padding: 6em 0;
            background-color: var(--bg-light);
        }
        
        .cases-container {
            position: relative;
        }
        
        .cases-slider {
            overflow: hidden;
            border-radius: 1.5em;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
        }
        
        .cases-track {
            display: flex;
            transition: transform 0.8s ease;
        }
        
        .case-card {
            min-width: 100%;
            display: flex;
            background-color: white;
            border-radius: 1.5em;
            overflow: hidden;
        }
        
        .case-image {
            flex: 1.2;
            min-height: 450px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        
        .case-image::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 60px;
            height: 100%;
            background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.7));
        }
        
        .case-content {
            flex: 0.8;
            padding: 3.5em;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
        }
        
        .case-category {
            display: inline-flex;
            align-items: center;
            background-color: rgba(0, 102, 204, 0.1);
            color: var(--accent-color);
            padding: 0.5em 1.2em;
            border-radius: 2em;
            font-size: 0.85em;
            margin-bottom: 1.8em;
            align-self: flex-start;
            font-weight: 500;
        }
        
        .case-title {
            font-size: 2.4em;
            font-weight: 600;
            margin-bottom: 0.8em;
            line-height: 1.2;
        }
        
        .case-desc {
            color: var(--light-text);
            margin-bottom: 2.5em;
            line-height: 1.7;
            flex: 1;
        }
        
        .case-action {
            display: flex;
            align-items: center;
            justify-content: flex-start;
            margin-top: auto;
        }
        
        .case-link {
            display: inline-flex;
            align-items: center;
            gap: 0.6em;
            background: linear-gradient(135deg, var(--accent-color), #004499);
            color: white;
            padding: 0.9em 1.8em;
            border-radius: 0.5em;
            font-weight: 500;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }
        
        .case-link::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.6s ease;
        }
        
        .case-link:hover::before {
            left: 100%;
        }
        
        .case-link:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0, 102, 204, 0.25);
        }
        
        .link-icon {
            transition: transform 0.4s ease;
        }
        
        .case-link:hover .link-icon {
            transform: translateX(5px);
        }
		.case-notice {
			font-size: 0.75em;
			color: #86868b;
			margin-top: 0.5em;
			text-align: center;
			line-height: 1.4;
			opacity: 0.7;
			flex: auto;
		}
        
        .slider-controls {
            display: flex;
            justify-content: space-between;
            position: absolute;
            bottom: .3em;
            left: 3em;
            width: calc(100% - 6em);
        }
        
        .slider-nav {
            display: flex;
            gap: 1em;
        }
        
        .slider-btn {
            width: 3.2em;
            height: 3.2em;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.95);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        }
        
        .slider-btn:hover {
            background-color: white;
            transform: scale(1.1) translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
        }
        
        /* 核心业务领域部分 - 包含更多服务 */
        .services-section {
            padding: 6em 0;
            background-color: var(--bg-lighter);
        }
        
        .core-services {
            display: flex;
            flex-wrap: wrap;
            gap: 2em;
            margin-bottom: 4em;
        }
        
        .service-card {
            background-color: white;
            border-radius: 1.2em;
            padding: 2.8em;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
            transition: all 0.4s ease;
            opacity: 0;
            transform: translateY(30px);
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-color), #004499);
        }
        
        .service-card::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 100px;
            height: 100px;
            background: linear-gradient(135deg, rgba(0, 102, 204, 0.05), rgba(0, 68, 153, 0.05));
            border-radius: 0 0 0 100%;
        }
        
        .service-card.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        
        .service-card-large {
            flex: 2;
            min-width: 60%;
        }
        
        .service-card-small {
            flex: 1;
            min-width: 30%;
        }
        
        .service-card-equal {
            flex: 1;
            min-width: 30%;
        }
        
        .service-icon {
            width: 3.8em;
            height: 3.8em;
            margin-bottom: 1.8em;
            background-color: rgba(0, 102, 204, 0.1);
            border-radius: 0.9em;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 1;
        }
        
        .service-icon::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border-radius: 0.9em;
            background: linear-gradient(135deg, rgba(0, 102, 204, 0.1), rgba(0, 68, 153, 0.1));
            transform: rotate(45deg);
            z-index: -1;
        }
        
        .service-title {
            font-size: 1.9em;
            font-weight: 600;
            margin-bottom: 0.9em;
            position: relative;
            z-index: 1;
        }
        
        .service-desc {
            color: var(--light-text);
            margin-bottom: 1.8em;
            position: relative;
            z-index: 1;
            line-height: 1.7;
        }
        
        /* 更多专业服务部分 - 在核心业务领域内 */
        .more-services-wrapper {
            margin-top: 4em;
            position: relative;
            width: 100%;
        }
        
        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2.2em;
        }
        
        .section-header h3 {
            font-size: 1.9em;
            font-weight: 600;
            position: relative;
            padding-left: 1em;
        }
        
        .section-header h3::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            width: 5px;
            height: 1.2em;
            background: linear-gradient(to bottom, var(--accent-color), #004499);
            border-radius: 3px;
        }
        
        .scroll-header {
            display: flex;
            align-items: center;
            gap: 1.2em;
        }
        
        .scroll-buttons {
            display: flex;
            gap: 0.6em;
        }
        
        .scroll-btn {
            width: 2.8em;
            height: 2.8em;
            border-radius: 50%;
            background-color: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 10;
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
            opacity: 1;
            visibility: visible;
            transform: scale(1);
        }
        
        .scroll-btn.hidden {
            opacity: 0;
            visibility: hidden;
            transform: scale(0);
            width: 0;
            pointer-events: none;
        }
        
        .scroll-btn:hover {
            background: linear-gradient(135deg, var(--accent-color), #004499);
            color: white;
            transform: translateY(-2px) scale(1);
            box-shadow: 0 8px 20px rgba(0, 102, 204, 0.2);
        }
        
        .scroll-btn.hidden:hover {
            transform: scale(0);
        }
        
        .scroll-container {
            overflow-x: hidden;
            scroll-behavior: smooth;
            padding: 1.2em 0;
            position: relative;
        }
        
        .more-services {
            display: flex;
            gap: 1.8em;
            transition: transform 0.5s ease;
            width: max-content;
        }
        
        .more-service-card {
            width: 280px;
            background-color: white;
            border-radius: 1.2em;
            padding: 2.2em;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            text-align: left;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .more-service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            border-color: var(--accent-color);
        }
        
        .more-service-icon {
            width: 3.5em;
            height: 3.5em;
            margin-bottom: 1.4em;
            background-color: rgba(0, 102, 204, 0.1);
            border-radius: 0.8em;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .more-service-title {
            font-weight: 600;
            margin-bottom: 1em;
            font-size: 1.2em;
            color: var(--primary-color);
        }
        
        .more-service-subcategories {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6em;
            margin-bottom: 1.8em;
        }
        
        .more-service-subcategories span {
            background-color: rgba(0, 102, 204, 0.05);
            color: var(--accent-color);
            padding: 0.3em 0.8em;
            border-radius: 2em;
            font-size: 0.8em;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .more-service-card:hover .more-service-subcategories span {
            background-color: rgba(0, 102, 204, 0.1);
        }
        
        .more-service-learn {
            margin-top: auto;
            color: var(--accent-color);
            font-weight: 500;
            font-size: 0.9em;
            display: flex;
            align-items: center;
            gap: 0.3em;
            transition: all 0.3s ease;
        }
        
        .more-service-learn:hover {
            color: #004499;
            transform: translateX(5px);
        }
        
        /* 关于我们模块样式 - 更浅色背景 */
        .about-section {
            padding: 6em 0;
            background-color: var(--bg-lighter);
            position: relative;
            overflow: hidden;
        }
        
        .about-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--accent-color), #004499);
        }
        
        .about-container {
            display: flex;
            flex-wrap: wrap;
            gap: 3em;
            margin-top: 2em;
        }
        
        .about-left {
            flex: 1;
            min-width: 300px;
        }
        
        .about-right {
            flex: 1;
            min-width: 300px;
            display: flex;
            flex-direction: column;
            gap: 2.5em;
        }
        
        .about-video {
            margin-bottom: 2.5em;
        }
        
        .video-placeholder {
            width: 100%;
            height: 300px;
            background: linear-gradient(135deg, #1a1a1a, #333);
            border-radius: 1.2em;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }
        
        .video-placeholder::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('https://images.unsplash.com/photo-1517077304055-6e89abbf09b0?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover;
            opacity: 0.7;
        }
        
        .play-btn {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--accent-color), #004499);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            z-index: 2;
            box-shadow: 0 8px 25px rgba(0, 102, 204, 0.3);
        }
        
        .play-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 12px 30px rgba(0, 102, 204, 0.4);
        }
        
        .video-title {
            margin-top: 1.5em;
            color: white;
            font-weight: 600;
            font-size: 1.2em;
            position: relative;
            z-index: 2;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
        }
        
        .about-intro {
            background-color: #f8f9fa;
            border-radius: 1.2em;
            padding: 2.5em;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .about-intro h3 {
            font-size: 1.8em;
            font-weight: 600;
            margin-bottom: 1em;
            color: var(--primary-color);
        }
        
        .about-intro p {
            color: var(--light-text);
            line-height: 1.7;
            margin-bottom: 2em;
        }
        
        /* 动态数字横排布局 */
        .stats-container {
            display: flex;
            justify-content: space-between;
            background-color: white;
            border-radius: 1em;
            padding: 1em;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .stat-item {
            text-align: center;
            flex: 1;
            padding: 0 1em;
        }
        
        .stat-item:not(:last-child) {
            border-right: 1px solid rgba(210, 210, 215, 0.5);
        }
        
        .stat-number {
            font-size: 2.5em;
            font-weight: 700;
            color: var(--accent-color);
            margin-bottom: 0.3em;
            line-height: 1;
        }
        
        .stat-label {
            color: var(--light-text);
            font-size: 0.9em;
            font-weight: 500;
        }
        
        /* 特色优势 - 2x2网格布局 */
        .features-container {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5em;
            background-color: white;
            border-radius: 1.2em;
            padding: 2em;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .feature-item {
            display: flex;
            align-items: flex-start;
            padding: 1.2em;
            border-radius: 0.8em;
            transition: all 0.3s ease;
            border: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .feature-item:hover {
            background-color: #f8f9fa;
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .feature-icon {
            width: 2.6em;
            height: 2.6em;
            background-color: rgba(0, 102, 204, 0.1);
            border-radius: 0.8em;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1.2em;
            flex-shrink: 0;
        }
        
        .feature-content h4 {
            font-size: 1.1em;
            font-weight: 600;
            margin-bottom: 0.4em;
            color: var(--primary-color);
        }
        
        .feature-content p {
            color: var(--light-text);
            font-size: 0.9em;
            line-height: 1.5;
        }
        
        .founder-card {
            display: flex;
            align-items: center;
            background-color: white;
            border-radius: 1.2em;
            padding: 2em;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .founder-image {
            margin-right: 1.5em;
        }
        
        .founder-img-placeholder {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--accent-color), #004499);
			background: url(https://xuweixuan.com/api/images/peo1.png) center / cover;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2em;
            font-weight: 700;
            color: white;
            box-shadow: 0 8px 20px rgba(0, 102, 204, 0.25);
        }
 
        .founder-info {
            flex: 1;
        }
        
        .founder-info h3 {
            font-size: 1.4em;
            font-weight: 600;
            margin-bottom: 0.3em;
            color: var(--primary-color);
        }
        
        .founder-title {
            color: var(--light-text);
            font-size: 0.9em;
            margin-bottom: 0.8em;
        }
        
        .founder-quote {
            font-style: italic;
            color: var(--accent-color);
            margin-bottom: 1em;
            padding-left: 1em;
            border-left: 3px solid var(--accent-color);
        }
        
        .founder-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5em;
            color: var(--accent-color);
            font-weight: 500;
            font-size: 0.9em;
            transition: all 0.3s ease;
        }
        
        .founder-link:hover {
            transform: translateX(5px);
            color: #004499;
        }
        
        /* 新闻动态部分 - 浅色背景 */
        .news-section {
            padding: 6em 0;
            background-color: var(--bg-light);
        }
        
        .news-container {
            display: flex;
            flex-wrap: wrap;
            gap: 3.2em;
        }
        
        .faq-section {
            flex: 1;
            min-width: 45%;
            background-color: white;
            border-radius: 1.5em;
            padding: 2.8em;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(210, 210, 215, 0.3);
        }
        
        .faq-title {
            font-size: 1.9em;
            font-weight: 600;
            margin-bottom: 1.6em;
            position: relative;
            padding-left: 1.2em;
        }
        
        .faq-title::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            width: 5px;
            height: 1.2em;
            background: linear-gradient(to bottom, var(--accent-color), #004499);
            border-radius: 3px;
        }
        
        .faq-list {
            flex: 1;
        }
        
        .faq-item {
            border-bottom: 1px solid rgba(210, 210, 215, 0.5);
            padding: 1.6em 0;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .faq-item:hover {
            border-bottom-color: var(--accent-color);
        }
        
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
            font-size: 1.05em;
        }
        
        .faq-question svg {
            transition: transform 0.3s ease;
        }
        
        .faq-item.active .faq-question svg {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            color: var(--light-text);
            transition: max-height 0.5s ease, margin-top 0.3s ease;
            line-height: 1.6;
        }
        
        .faq-item.active .faq-answer {
            max-height: 300px;
            margin-top: 1.2em;
        }
        
        .faq-more {
            margin-top: 2.2em;
            display: inline-flex;
            align-items: center;
            gap: 0.6em;
            font-weight: 500;
            color: var(--accent-color);
            align-self: flex-start;
            transition: all 0.3s ease;
            padding: 0.6em 1em;
            border-radius: 0.4em;
        }
        
        .faq-more:hover {
            background-color: rgba(0, 102, 204, 0.05);
            transform: translateX(5px);
        }
        /* FAQ切换链接样式 */
		.faq-toggle {
			display: inline-flex;
			align-items: center;
			justify-content: center;
			gap: 0.5em;
			margin-top: 1.2em;
			padding: 0.6em 1.2em;
			background-color: transparent;
			border: 1px solid var(--accent-color);
			color: var(--accent-color);
			border-radius: 0.4em;
			font-size: 0.9em;
			font-weight: 500;
			cursor: pointer;
			transition: all 0.3s ease;
			text-decoration: none;
			position: relative;
			overflow: hidden;
		}

		.faq-toggle:hover {
			background-color: rgba(0, 102, 204, 0.05);
			transform: translateY(-2px);
			text-decoration: none;
		}

		/* 当FAQ项展开时链接样式 */
		.faq-item.active .faq-toggle {
			background-color: var(--accent-color);
			color: white;
		}

		.faq-item.active .faq-toggle:hover {
			background-color: #004499;
		}

		/* FAQ答案内容样式调整 */
		.faq-answer-content {
			overflow: hidden;
			transition: all 0.5s ease;
			line-height: 1.6;
			color: var(--light-text);
			position: relative;
		}

		/* 简短内容显示 */
		.faq-answer-short {
			display: block;
		}

		.faq-answer-full {
			display: none;
			margin-top: 1em;
			padding-top: 1em;
			border-top: 1px solid rgba(210, 210, 215, 0.3);
		}

		/* 展开时显示完整内容 */
		.faq-item.active .faq-answer-short {
			display: none;
		}

		.faq-item.active .faq-answer-full {
			display: block;
			animation: fadeIn 0.5s ease;
		}

		/* 淡入动画 */
		@keyframes fadeIn {
			from { opacity: 0; transform: translateY(10px); }
			to { opacity: 1; transform: translateY(0); }
		}

		/* 内容渐变遮罩（展开前） */
		.faq-answer-content:not(.expanded) {
			max-height: 6.4em; /* 显示约3行文字（1.6行高 * 4行 = 6.4em） */
			overflow: hidden;
		}

		.faq-answer-content:not(.expanded)::after {
			content: '';
			position: absolute;
			bottom: 0;
			left: 0;
			width: 100%;
			height: 2em;
			background: linear-gradient(to bottom, transparent, white 80%);
			pointer-events: none;
		}

		.faq-item.active .faq-answer-content::after {
			opacity: 0;
		}

		/* 移动端调整 */
		@media (max-width: 768px) {
			.faq-toggle {
				width: 100%;
				padding: 0.8em 1.5em;
				font-size: 1em;
				text-align: center;
			}
			
			.faq-answer-content:not(.expanded) {
				max-height: 8em; /* 移动端显示更多一些 */
			}
		}

		/* 链接图标动画 */
		.faq-toggle i {
			font-size: 0.8em;
			transition: transform 0.3s ease;
		}

		.faq-toggle:hover i {
			transform: translateY(2px);
		}

		.faq-item.active .faq-toggle i {
			transform: rotate(180deg);
		}
        .news-list {
            flex: 1;
            min-width: 45%;
            background-color: white;
            border-radius: 1.5em;
            padding: 2.8em;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(210, 210, 215, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        .news-title {
            font-size: 1.9em;
            font-weight: 600;
            margin-bottom: 1.6em;
            position: relative;
            padding-left: 1.2em;
        }
        
        .news-title::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            width: 5px;
            height: 1.2em;
            background: linear-gradient(to bottom, var(--accent-color), #004499);
            border-radius: 3px;
        }
        
        .news-track {
            flex: 1;
            position: relative;
            overflow: hidden;
        }
        
        .news-items {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            transition: transform 0.5s ease;
        }
        
        .news-card {
            padding: 1.6em 0;
            border-bottom: 1px solid rgba(210, 210, 215, 0.5);
            transition: all 0.3s ease;
        }
        
        .news-card:hover {
            border-bottom-color: var(--accent-color);
        }
        
        .news-card:last-child {
            border-bottom: none;
        }
        
        .news-date {
            color: var(--light-text);
            font-size: 0.85em;
            margin-bottom: 0.6em;
        }
        
        .news-card-title {
            font-size: 1.15em;
            font-weight: 600;
            margin-bottom: 0.6em;
            transition: all 0.3s ease;
        }
        
        .news-card-title a {
            color: inherit;
        }
        
        .news-card-title a:hover {
            color: var(--accent-color);
        }
        
        .news-card-summary {
            color: var(--light-text);
            font-size: 0.95em;
            line-height: 1.5;
        }
        
        .news-more {
            display: inline-block;
            margin-top: 2.2em;
            font-weight: 500;
            color: var(--accent-color);
            transition: all 0.3s ease;
            padding: 0.6em 0;
        }
        
        .news-more:hover {
            transform: translateX(5px);
        }
        
        /* 页脚 */
        .footer {
            background-color: var(--primary-color);
            color: white;
            padding: 5em 0 2em;
            position: relative;
            overflow: hidden;
        }
        
        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--accent-color), #004499);
        }
        
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-bottom: 3.5em;
        }
        
        .contact-info {
            flex: 1;
            min-width: 300px;
            margin-bottom: 2.5em;
        }
        
        .contact-title {
            font-size: 1.6em;
            font-weight: 600;
            margin-bottom: 1.8em;
            position: relative;
            padding-left: 1.2em;
        }
        
        .contact-title::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            width: 5px;
            height: 1.2em;
            background: linear-gradient(to bottom, var(--accent-color), #004499);
            border-radius: 3px;
        }
        
        .contact-item {
            display: flex;
            align-items: center;
            margin-bottom: 1.4em;
            transition: all 0.3s ease;
            padding: 0.5em;
            border-radius: 0.4em;
        }
        
        .contact-item:hover {
            background-color: rgba(255, 255, 255, 0.05);
        }
        
        .contact-icon {
            width: 1.2em;
            height: 1.2em;
            margin-right: 1em;
            fill: white;
        }
        
        .qr-codes {
            display: flex;
            gap: 2.5em;
            margin-top: 2.5em;
        }
        
        .qr-item {
            text-align: center;
        }
        
        .qr-code {
            width: 130px;
            height: 130px;
            background-color: white;
            border-radius: 0.6em;
            margin-bottom: 0.6em;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        .qr-code img {
            width: 100%;
            height: 100%;
            border: 5px solid transparent; 
            border-radius: 8px;  
            box-shadow: 0 0 10px rgba(255, 255, 255, 0.6),  
                        0 0 20px rgba(255, 255, 255, 0.2); 
        }

        .qr-label {
            font-size: 0.85em;
            color: rgba(255, 255, 255, 0.7);
        }
        
        /* 资源下载模块 */
        .resources-section {
            flex: 1;
            min-width: 300px;
            margin-bottom: 2.5em;
        }
        
        .resource-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5em;
            margin-bottom: 2em;
        }
        
        .resource-card {
            background-color: rgba(255, 255, 255, 0.05);
            border-radius: 0.8em;
            padding: 1.8em;
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .resource-card:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-5px);
            border-color: var(--accent-color);
        }
        
        .resource-header {
            display: flex;
            align-items: center;
            margin-bottom: 1em;
        }
        
        .resource-icon {
            width: 3em;
            height: 3em;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 0.6em;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1em;
        }
        
        .resource-title {
            font-size: 1.1em;
            font-weight: 600;
            color: white;
        }
        
        .resource-desc {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9em;
            line-height: 1.5;
            margin-bottom: 1.5em;
        }
        
        .resource-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5em;
            background-color: rgba(0, 102, 204, 0.2);
            color: white;
            padding: 0.6em 1.2em;
            border-radius: 0.4em;
            font-size: 0.9em;
            transition: all 0.3s ease;
        }
        
        .resource-btn:hover {
            background-color: var(--accent-color);
            transform: translateY(-2px);
        }
        
        .links-section {
            flex: 1;
            min-width: 300px;
            margin-bottom: 2.5em;
        }
        
        .links-title {
            font-size: 1.3em;
            font-weight: 600;
            margin-bottom: 1.8em;
            position: relative;
            padding-left: 1.2em;
        }
        
        .links-title::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            width: 5px;
            height: 1.2em;
            background: linear-gradient(to bottom, var(--accent-color), #004499);
            border-radius: 3px;
        }
        
        .links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1em;
        }
        
        .links-list a {
            padding: 0.4em 0.8em;
            background-color: rgba(255, 255, 255, 0.05);
            border-radius: 0.5em;
            transition: all 0.3s ease;
            font-size: 0.8em;
        }
        
        .links-list a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        
        .footer-links {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2.2em;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            font-size: 0.9em;
            color: rgba(255, 255, 255, 0.6);
        }
        
        .footer-links a {
            color: rgba(255, 255, 255, 0.8);
            transition: all 0.3s ease;
        }
        
        .footer-links a:hover {
            color: white;
            text-decoration: underline;
        }
        
        /* 悬浮按钮 */
        .side-buttons {
            position: fixed;
            right: 1.2em;
            bottom: 2.5em;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.2em;
            z-index: 999;
        }
        
        .side-button {
            width: 3.2em;
            height: 3.2em;
            border-radius: 50%;
            background-color: white;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(210, 210, 215, 0.5);
        }
        
        .side-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-color), #004499);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .side-button:hover::before {
            opacity: 1;
        }
        
        .side-button:hover {
            transform: scale(1.1) translateY(-3px);
            box-shadow: 0 12px 25px rgba(0, 102, 204, 0.2);
        }
        
        .side-button svg {
            position: relative;
            z-index: 1;
            transition: all 0.3s ease;
        }
        
        .side-button:hover svg {
            fill: white;
        }
        
        .side-button:hover .tooltip {
            opacity: 1;
            transform: translateX(0);
        }
        
        .tooltip {
            position: absolute;
            right: 100%;
            top: 50%;
            transform: translateY(-50%) translateX(-10px);
            background-color: var(--primary-color);
            color: white;
            padding: 0.6em 1.2em;
            border-radius: 0.5em;
            font-size: 0.85em;
            white-space: nowrap;
            opacity: 0;
            transition: all 0.3s ease;
            pointer-events: none;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .tooltip::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 100%;
            transform: translateY(-50%);
            border-width: 5px;
            border-style: solid;
            border-color: transparent transparent transparent var(--primary-color);
        }
        
        /* 弹窗样式 */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            backdrop-filter: blur(5px);
        }
        
        .modal.active {
            opacity: 1;
            visibility: visible;
        }
        
        .modal-content {
            background-color: white;
            border-radius: 1.5em;
            padding: 3.5em;
            max-width: 520px;
            width: 90%;
            position: relative;
            transform: translateY(30px);
            transition: transform 0.5s ease;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
            border: 1px solid rgba(210, 210, 215, 0.5);
            overflow: hidden;
        }
        
        .modal-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--accent-color), #004499);
        }
        
        .modal.active .modal-content {
            transform: translateY(0);
        }
        
        .modal-close {
            position: absolute;
            top: 1.3em;
            right: 1.3em;
            background: none;
            border: none;
            font-size: 1.5em;
            cursor: pointer;
            color: var(--light-text);
            width: 2.2em;
            height: 2.2em;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s ease;
            background-color: rgba(245, 245, 247, 0.5);
        }
        
        .modal-close:hover {
            background-color: var(--secondary-color);
            transform: rotate(90deg);
        }
        
        .modal-title {
            font-size: 1.9em;
            font-weight: 600;
            margin-bottom: 1.8em;
            position: relative;
            padding-left: 1.2em;
        }
        
        .modal-title::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            width: 5px;
            height: 1.2em;
            background: linear-gradient(to bottom, var(--accent-color), #004499);
            border-radius: 3px;
        }
        
        .search-input {
            width: 100%;
            padding: 1.3em 1.6em;
            border: 1px solid var(--border-color);
            border-radius: 0.8em;
            font-size: 1em;
            margin-bottom: 1.8em;
            transition: all 0.3s ease;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
        }
        
        .search-input:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1), 0 5px 15px rgba(0, 0, 0, 0.08);
        }
        
        /* 优化在线客服弹窗样式 */
        .contact-modal-content {
            max-width: 620px;
        }
        
        .contact-info-modal {
            margin-bottom: 2.5em;
        }
        
        .contact-row {
            display: flex;
            margin-bottom: 1.8em;
            padding-bottom: 1.8em;
            border-bottom: 1px solid rgba(210, 210, 215, 0.5);
        }
        
        .contact-row:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        
        .contact-label {
            width: 130px;
            font-weight: 600;
            color: var(--text-color);
        }
        
        .contact-value {
            flex: 1;
            color: var(--light-text);
        }
        
        .contact-action-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2em;
            margin-top: 2.5em;
        }
        
        .qr-section {
            flex: 1;
        }
        
        .qr-modal {
            width: 160px;
            height: 160px;
            background-color: #f5f5f5;
            border-radius: 0.6em;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        }
        .qr-modal img{
            width: 100%;
            height: 100%;
        }
        .qr-text {
            text-align: center;
            margin-top: 0.8em;
            color: var(--light-text);
            font-size: 0.9em;
        }
        
        .contact-actions {
            flex: 1;
            display: flex;
            justify-content: center;
        }
        
        /* 响应式设计 - 移动端优化 */
        @media (max-width: 1200px) {
            .dropdown-menu {
                width: 700px;
                max-width: calc(100vw - 40px);
            }
            
            .dropdown-simple {
                width: 500px;
            }
        }
        
        @media (max-width: 992px) {
            :root {
                --container-padding: 4%;
            }
            
            .banner-title {
                font-size: 2.5em;
            }
            
            .banner-notice {
                top: auto;
                bottom: 2em;
                right: var(--container-padding);
                transform: none;
                flex-direction: row;
                align-items: center;
            }
            
            /* PC端导航栏调整 */
            .nav-links {
                display: none;
            }
            
            .nav-phone {
                display: none;
            }
            
            /* 移动端菜单按钮 */
            .mobile-menu-btn {
                display: flex;
            }
            
            /* 移动端联系电话 */
            .mobile-phone {
                display: flex;
            }
            
            .mobile-phone .phone-icon {
                margin-right: 0;
            }
            
            /* 移动端导航菜单 */
            .mobile-nav {
                display: block;
            }
            
            /* 移动端logo居中 */
            .main-nav {
                justify-content: center;
            }
            
            .logo-container {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
            
            /* 移动端案例卡片调整 */
            .case-card {
                flex-direction: column;
            }
            
            .case-image {
                min-height: 350px;
                flex: 1;
            }
            
            .case-content {
                flex: 1;
            }
            
            /* 关于我们模块响应式 */
            .features-container {
                grid-template-columns: 1fr;
            }
            
            /* 更多业务响应式 */
            .scroll-buttons {
                display: none;
            }
            
            /* 页脚资源下载响应式 */
            .resource-cards {
                grid-template-columns: 1fr;
            }
            
            /* 在线客服弹窗响应式 */
            .contact-action-row {
                flex-direction: column;
                gap: 1.5em;
            }
            
            .qr-section, .contact-actions {
                width: 100%;
            }
            
            /* 移动端下拉菜单不需要居中 */
            .dropdown-menu {
                left: 0;
                transform: translateY(10px);
                width: 100%;
                max-width: 100%;
            }
            
            .nav-item:hover .dropdown-menu {
                transform: translateY(0);
            }
        }
        
        @media (max-width: 768px) {
            :root {
                --container-padding: 1.8em;
                --header-height: 3.8em;
            }
            
            .section-title {
                font-size: 2.2em;
            }
            
            .banner-title {
                font-size: 2.2em;
                max-width: 90%;
            }
            
            .banner-subtitle {
                font-size: 1.2em;
                max-width: 90%;
            }
            
            .banner-notice {
                position: static;
                transform: none;
                margin-top: 2em;
                flex-direction: column;
                align-items: flex-start;
            }
            
            .core-services {
                flex-direction: column;
            }
            
            .service-card-large, .service-card-small, .service-card-equal {
                width: 100%;
            }
            
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 1.2em;
            }
            
            .scroll-header {
                width: 100%;
                justify-content: space-between;
            }
            
            .news-container {
                flex-direction: column;
            }
            
            .faq-section, .news-list {
                width: 100%;
                min-width: 100%;
            }
            
            .footer-content {
                flex-direction: column;
            }
            
            .side-buttons {
                right: 1.2em;
                bottom: 1.5em;
            }
            
            /* 关于我们模块移动端 */
            .stats-container {
                flex-direction: column;
                gap: 1.5em;
            }
            
            .stat-item:not(:last-child) {
                border-right: none;
                border-bottom: 1px solid rgba(210, 210, 215, 0.5);
                padding-bottom: 1.5em;
            }
            
            .founder-card {
                flex-direction: column;
                text-align: center;
            }
            
            .founder-image {
                margin-right: 0;
                margin-bottom: 1.5em;
            }
        }
        
        @media (max-width: 480px) {
            html {
                font-size: 14px;
            }
            
            .banner-title {
                font-size: 2em;
            }
            
            .service-card {
                padding: 2em;
            }
            
            .modal-content {
                padding: 2.5em;
            }
            
            /* 移动端联系电话显示文字 */
            .mobile-phone .phone-text {
                display: inline;
                margin-left: 0.5em;
            }
            
            .mobile-phone {
                padding: 0.6em 0.8em;
            }
        }