  <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial, sans-serif;
        }
        :root {
            --main-green: #1A4D3A;
            --orange: #F27C22;
            --cream: #F8F5ED;
            --white: #ffffff;
            --text-gray: #333;
            --teal: #289989;
        }
        body {
            background-color: var(--cream);
            color: var(--text-gray);
        }

        /* 导航栏 */
        header {
            background: var(--main-green);
            position: sticky;
            top: 0;
            z-index: 999;
        }
        .nav-wrap {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            padding: 0 20px;
            position: relative;
        }
        .company-name {
            color: #fff;
            font-size: 20px;
            font-weight: 600;
        }

        /* 桌面端导航 */
        .desktop-nav {
            display: flex;
            list-style: none;
            gap: 35px;
        }
        .desktop-nav li a {
            color: #fff;
            text-decoration: none;
            font-size: 16px;
        }
        .desktop-nav li a:hover {
            color: var(--orange);
        }

        /* 移动端汉堡按钮 */
        .menu-btn {
            display: none;
            color: #fff;
            font-size: 28px;
            cursor: pointer;
        }

        /* 移动端下拉导航 */
        .mobile-nav {
            display: none;
            position: absolute;
            top: 70px;
            left: 0;
            width: 100%;
            background: var(--main-green);
            list-style: none;
            padding: 0 20px;
        }
        .mobile-nav li {
            padding: 15px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .mobile-nav li a {
            color: #fff;
            text-decoration: none;
            font-size: 16px;
            display: block;
        }
        .mobile-nav.show {
            display: block;
        }

        /* ========== Banner轮播样式（新增箭头+指示器） ========== */
        .banner {
            width: 100%;
            height: auto;
            overflow: hidden;
            position: relative;
        }
        .banner-slide {
            width: 100%;
            display: none;
        }
        .banner-slide.active {
            display: block;
        }
        .banner-slide img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 左右切换箭头 */
        .banner-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 44px;
            height: 44px;
            background: rgba(0,0,0,0.3);
            color: #fff;
            font-size: 24px;
            text-align: center;
            line-height: 44px;
            cursor: pointer;
            border-radius: 50%;
            transition: background 0.3s;
            z-index: 10;
        }
        .banner-arrow:hover {
            background: rgba(0,0,0,0.6);
        }
        .arrow-prev {
            left: 20px;
        }
        .arrow-next {
            right: 20px;
        }

        /* 底部轮播指示点 */
        .banner-dots {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
            z-index: 10;
        }
        .dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255,255,255,0.5);
            cursor: pointer;
        }
        .dot.active {
            background: var(--orange);
        }

        /* 通用容器 */
        .container {
            max-width: 80%;
            margin: 0 auto;
            padding: 60px 20px;
        }
        .section-title {
            text-align: center;
            font-size: 28px;
            color: var(--main-green);
            margin-bottom: 40px;
            position: relative;
        }
        .section-title::after {
            content: "";
            width: 60px;
            height: 3px;
            background: var(--orange);
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: -10px;
        }


  @media (max-width:768px) {
	     .container {
            max-width: 100%;
            margin: 0 auto;
            padding: 10px 10px;
        }
	  }

        /* 公司简介：左图 右文字 */
        .about-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .about-img-box {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
        }
        .about-img-box::before {
            content: "";
            position: absolute;
            width: 100%;
            height: 100%;
            border: 3px solid var(--orange);
            top: -15px;
            left: -15px;
            border-radius: 12px;
            z-index: -1;
        }
        .about-img-box img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            display: block;
        }
        .about-text h3 {
            color: var(--main-green);
            font-size: 30px;
            margin-bottom: 10px;
        }
		 .about-text h4 {
            color: var(--main-green);
            font-size: 22px;
            margin-bottom: 20px;
        }
		
        .about-text p {
            line-height: 1.8;
            font-size: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 8;
            -webkit-box-orient: vertical;
            overflow: hidden;
            text-overflow: ellipsis;
        }

 @media (max-width:768px) {
	      .about-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            align-items: center;
        }
	   .about-text h3 {
            color: var(--main-green);
            font-size: 22px;
            margin-bottom: 20px;
        }
	 .about-text h4 {
            color: var(--main-green);
            font-size: 19px;
            margin-bottom: 10px;
        }
	  }

        /* 产品展示 */
        .product-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }
        .product-item {
            background: #fff;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 3px 15px rgba(26,77,58,0.12);
        }
        .product-item img {
            width: 100%;
          /*  height: 240px;*/
            object-fit: cover;
            display: block;
        }
        .product-item h4 {
            padding: 15px;
            text-align: center;
            color: var(--main-green);
        }

        /* 产品优势 */
        .advantage-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }
        .advantage-item {
            background: #fff;
            padding: 30px 20px;
            text-align: center;
            border-top: 4px solid var(--main-green);
            border-radius: 10px;
        }
        .advantage-item h4 {
            color: var(--main-green);
            margin: 15px 0 10px;
        }

        /* 联系我们 */
        .contact-box {
            background: #fff;
            padding: 60px 20px;
            text-align: center;
        }
        .contact-box h2 {
            color: var(--teal);
            font-size: 36px;
            margin-bottom: 15px;
            position: relative;
        }
        .contact-box h2::after {
            content: '';
            width: 60px;
            height: 3px;
            background: var(--teal);
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: -10px;
        }
        .contact-row {
            max-width: 1200px;
            margin: 40px auto 0;
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 20px;
        }
        .contact-col h4 {
            font-size: 20px;
            margin-bottom: 15px;
            color: #222;
        }
        .contact-col p {
            font-size: 16px;
            color: #444;
        }

        /* 页脚 */

        .copyright-footer {
            background: #222222;
            color: #fff;
            text-align: center;
            padding: 30px 20px;
        }
        .copyright-footer p {
            line-height: 1.8;
        }

@media (max-width:768px) {
	.contact-box {
    background: #fff;
    padding: 10px 10px;
    text-align: center;
}
	.contact-box h2 {
    color: var(--teal);
    font-size: 28px;
    margin-bottom: 1px;
    position: relative;
}
	.contact-box .contact-col{
       border-bottom: 1px dashed #ccc;

}
}
        /* 移动端适配 */
        @media (max-width:768px) {
            .desktop-nav {
                display: none;
            }
            .menu-btn {
                display: block;
            }
            .about-wrap {
                grid-template-columns: 1fr;
            }
            .product-wrap {
                grid-template-columns: repeat(2,1fr);
            }
            .advantage-wrap {
                grid-template-columns: repeat(2,1fr);
            }
            .contact-row {
                grid-template-columns: repeat(1,1fr);
            }
            .company-name {
                font-size: 16px;
                display: block;
            }
            .banner-arrow {
                width: 36px;
                height: 36px;
                line-height: 36px;
                font-size: 18px;
            }
			.copyright-footer {
    background: #222222;
    color: #fff;
    text-align: center;
    padding: 30px 20px 1px;
}
        }
    </style>