/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "微软雅黑", sans-serif;
}

body {
    color: #333;
    line-height: 1.6;
}

/* 导航栏 */
header {
    background-color: #237EF5;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 999;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.logo {
    height: 30px;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

nav a {
    text-decoration: none;
    color: #fff;
    font-size: 14px;
    transition: color 0.3s;
}

nav a:hover {
    color: #e65c00;
}

/* 移动端汉堡菜单（适配手机） */
.menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: #fff;
}

/* 关于软件模块 */
.about-section {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.section-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
    position: relative;
    padding-left: 20px;
}

.section-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: #e65c00;
}

.about-intro {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

/* 功能模块：整图展示 */
.feature-full-image {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px;
    text-align: center;
}
.feature-full-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
    margin: 0 auto;
}

/* 参数模块 */
.params-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin: 40px 0;
    text-align: center;
}

.param-item .num {
    font-size: 24px;
    font-weight: bold;
    color: #e65c00;
    margin-bottom: 5px;
}

.param-item .label {
    font-size: 14px;
    color: #666;
}

/* 产品模块 */
.products-section {
    background: #f8f8f8;
    padding: 40px 20px;
}

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

.product-item {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: center;
}

.product-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.product-info h3 {
    font-size: 32px;
    color: #888;
    margin-bottom: 20px;
}

.product-img img {
    max-width: 45%;
    height: auto;
    border-radius: 8px;
    display: block;
    margin: 0 auto;
}
.product-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    background: #fdf5eb;
    padding: 20px;
    border-radius: 8px;
}

.spec-item .value {
    font-size: 24px;
    font-weight: bold;
    color: #e65c00;
    margin-bottom: 5px;
}

.spec-item .label {
    font-size: 14px;
    color: #666;
}

/* 页脚 */
        footer {
            background-color: #f0f0f0;
            padding: 30px 20px;
            border-top: 5px solid #fff;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }
        .footer-title {
            color: #0056b3;
            font-size: 14px;
            margin-bottom: 10px;
        }
        .footer-subtitle {
            font-size: 14px;
            color: #666;
            margin-bottom: 20px;
            position: relative;
        }
        .footer-subtitle::before,
        .footer-subtitle::after {
            content: "";
            position: absolute;
            top: 50%;
            width: 20%;
            height: 1px;
            background-color: #999;
        }
        .footer-subtitle::before {
            left: 10%;
        }
        .footer-subtitle::after {
            right: 10%;
        }
        .footer-contact {
            display: flex;
            justify-content: space-around;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
        }
        .contact-info {
            text-align: left;
            font-size: 14px;
            color: #666;
            line-height: 2;
        }
        .qrcode {
            width: 100px;
            height: 100px;
            background-color: #fff;
            border: 1px solid #ddd;
        }
		
		.qrcode img{
		    width: 100px;
		    height: 100px;
		}

/* 响应式适配（手机端） */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    nav ul {
        display: none;
        width: 100%;
        flex-direction: column;
        background: #fff;
        padding: 15px;
        border-top: 1px solid #eee;
    }
    nav a{
        color: #333;
    }

    nav ul.active {
        display: flex;
    }

    .product-item {
        grid-template-columns: 1fr;
    }

    .product-specs {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 18px;
    }

    .about-intro {
        font-size: 15px;
    }
}