/* 全局样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', sans-serif;
        }
		h1,h2,h3,hr{margin:10px 0px}
        /* 变量定义 - 统一管理配色/字体/间距 */
        :root {
            --primary-color: #0f4c81; /* 主色调：商务蓝 */
            --secondary-color: #f98e2c; /* 辅助色：暖橙 */
            --bai-color: #ffffff; /* 辅助色：白色 */
            --text-dark: #333;
            --text-light: #fff;
            --bg-light: #f8f9fa;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* 更顺滑的过渡曲线 */
            --section-padding:150px 0px 200px 0px; /* 统一section间距 */
            --section-padding-mobile: 60px 0;
			--gradient: linear-gradient(135deg, #0a2463, #3e92cc);
        }

        /* 基础样式 */
        body {
            color: var(--text-dark);
            line-height: 1.6;
            background-color: #fff;
            scroll-behavior: smooth; /* 全局平滑滚动 */
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        ul {
            list-style: none;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section {
            padding: var(--section-padding);
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 60px;
            color: var(--primary-color);
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
            margin: 20px auto 0;
            transition: width var(--transition);
        }

        .section-title:hover::after {
            width: 120px; /* 标题下划线hover动效 */
        }

        .btn {
            display: inline-block;
            padding: 12px 30px;
            background-color: var(--secondary-color);
            color: var(--text-light);
            border-radius: 4px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .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 {
            background-color: #e87e14;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn:hover::before {
            left: 100%; /* 按钮流光动效 */
        }

        /* 导航栏样式 */
        header {
            background-color: var(--text-light);
            box-shadow: var(--shadow);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 999;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .logo {
            font-size:2rem;
            font-weight: 700;
            color: var(--primary-color);
            transition: color var(--transition);
        }

        .logo span {
            color: var(--secondary-color);
        }
        .logo img {
            width:50px;height:auto;float: left; margin-right: 10px;
        }

        .logo:hover {
            color: #0a3a61; /* logo hover深色变化 */
        }

        /* 语言切换按钮 - 优化样式 */
        .lang-switch {
            display: flex;
            gap: 10px;
            margin-right: 20px;
        }

        .lang-btn {
            padding: 6px 12px;
            border: 1px solid var(--primary-color);
            border-radius: 4px;
            background: transparent;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
        }

        .lang-btn.active {
            background-color: var(--primary-color);
            color: var(--text-light);
            box-shadow: 0 2px 8px rgba(15, 76, 129, 0.3);
        }

        .lang-btn:hover:not(.active) {
            border-color: var(--secondary-color);
            color: var(--secondary-color);
        }

        /* 导航菜单 */
        .nav-menu {
            display: flex;
            gap: 30px;
        }

        .nav-link {
            font-weight: 600;
            color: var(--text-dark);
            position: relative;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: var(--transition);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        /* 移动端菜单按钮 - 优化点击区域 */
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 5px;
            z-index: 1000;
        }

        /* 英雄区样式 */
        .hero {
            min-height:80vh;
            background: linear-gradient(rgba(15, 76, 129, 0.8), rgba(15, 76, 129, 0.8)), url('https://images.unsplash.com/photo-1556742049-0cfed4f6a45d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
            color: var(--text-light);
            display: flex;
            align-items: center;
            text-align: center;
            padding-top:100px;
			padding-bottom: 80px;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .hero-title {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        /* 关于我们样式 */
        .about {
            background-color: var(--bg-light);
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
		.info{margin-top:50px}
        .info-content {
            display: grid;
            grid-template-columns: 1fr;
            align-items: center;
			line-height:180%;
        }

        .about-text {
            font-size: 1.1rem;
            line-height: 1.8;
        }

        .about-text p {
            margin-bottom: 20px;
        }

        .about-img {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .about-img:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
        }

        .about-img img {
            width: 100%;
            height: auto;
            display: block;
            loading: lazy; /* 图片懒加载 */
        }

        /* 核心优势样式 */
        .advantages {
            background-color: #fff;
        }

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

        .advantage-card {
            background-color: var(--bg-light);
            padding: 40px 25px;
            border-radius: 8px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .advantage-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--secondary-color);
            transform: scaleX(0);
            transition: transform var(--transition);
        }

        .advantage-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }

        .advantage-card:hover::before {
            transform: scaleX(1); /* 卡片顶部线条动效 */
        }

        .advantage-icon {
            font-size: 3rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }

        .advantage-title {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--primary-color);
        }

        /* 功能介绍样式 - 增加背景图+渐变叠加 */
        .features {
            /* 背景图 + 渐变叠加，保证文字清晰 */
            background: var(--gradient);
            color: var(--text-light);
            position: relative;
        }

        /* 增加装饰性元素 */
        .features::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 80px;
        }

        .features .section-title {
            color: var(--text-light);
        }

        .features .section-title::after {
            background-color: var(--secondary-color);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            position: relative;
            z-index: 1; /* 高于装饰元素 */
        }

        .feature-card {
            background-color: rgba(255, 255, 255, 0.1);
            padding: 30px 20px;
            border-radius: 8px;
            text-align: center;
            backdrop-filter: blur(5px);
            transition: var(--transition);
            border: 1px solid rgba(255,255,255,0.1);
        }

        .feature-card:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
            border-color: rgba(255,255,255,0.3);
        }

        .feature-icon {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: var(--bai-color);
        }

        .feature-title {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        /* APP下载样式 */
        .download {
            background-color: var(--bg-light);
            text-align: center;
        }

        .download-content {
            max-width: 700px;
            margin: 0 auto;
        }

        .download-text {
            font-size: 1.2rem;
            margin-bottom: 40px;
        }

        .download-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .download-btn {
            display: flex;
            align-items: center;
            gap: 10px;
            background-color: var(--text-dark);
            padding: 15px 30px;
            border-radius: 8px;
            color: var(--text-light);
            font-weight: 600;
            transition: var(--transition);
        }

        .download-btn i {
            font-size: 1.5rem;
        }

        .download-btn:hover {
            background-color: #222;
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        /* 页脚样式 - 优化间距 */
        footer {
            background-color: var(--primary-color);
            color: var(--text-light);
            padding: 60px 0 20px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h3 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background-color: var(--secondary-color);
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col a:hover {
            color: var(--secondary-color);
            padding-left: 5px; /* 链接hover位移 */
        }

        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
        }

        /* 响应式设计 - 平板 */
        @media (max-width: 992px) {
            .about-content {
                grid-template-columns: 1fr;
            }

            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero-title {
                font-size: 2.8rem;
            }
        }

        /* 响应式设计 - 手机 */
        @media (max-width: 768px) {
		.logo img {
            width:40px;height:auto;float: left; margin-right:2px;
        }
		.logo {font-size:1.6rem;}
            .menu-toggle {
                display: block;
            }

            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                flex-direction: column;
                background-color: var(--text-light);
                width: 100%;
                padding: 20px 0;
                box-shadow: var(--shadow);
                transition: var(--transition);
                text-align: center;
            }

            .nav-menu.active {
                left: 0;
            }

            .advantages-grid {
                grid-template-columns: 1fr;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .footer-content {
                grid-template-columns:repeat(2, 1fr);
            }

            .hero-title {
                font-size: 2.2rem;
            }

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

            /* 移动端语言切换位置调整 */
            .lang-switch {
                margin-right: 0;
            }
        }