* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Arial", "Helvetica", sans-serif;
        }
        body {
            background-color: #e8f4f8; /* 浅蓝主背景 */
            color: #333;
            line-height: 1.8;
            padding: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        /* 主标题样式 */
        .main-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            color: #2c7a99; /* 深一点的浅蓝色 */
            margin-bottom: 1.5rem;
            padding-bottom: 1rem;
            border-bottom: 3px solid #90e0a9; /* 浅绿色边框 */
        }
        /* 二级标题样式 */
        .second-title {
            font-size: 1.6rem;
            font-weight: 600;
            color: #2c7a99;
            margin: 2rem 0 1rem;
            position: relative;
            padding-left: 1rem;
        }
        .second-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 8px;
            height: 1.2rem;
            background-color: #90e0a9; /* 浅绿色小标识 */
            border-radius: 4px;
        }
        /* 三级标题/板块标题 */
        .third-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #3498db; /* 浅蓝色 */
            margin: 1.5rem 0 0.8rem;
        }
        /* 正文段落 */
        p {
            font-size: 1rem;
            margin-bottom: 1rem;
            text-align: justify;
        }
        /* 列表样式 */
        ol {
            margin: 1rem 0 1rem 2rem;
            padding-left: 1rem;
        }
        ol li {
            margin-bottom: 0.8rem;
            text-align: justify;
        }
        /* 图片容器（保留原文图片占位） */
        .img-box {
            text-align: center;
            margin: 1.5rem 0;
        }
        .img-box img {
            max-width: 80%;
            height: auto;
            border-radius: 8px;
            border: 2px solid #d1e7dd; /* 浅绿边框 */
        }
        /* 绿色发展板块样式 */
        .green-development {
            background-color: #f0fdf4; /* 浅绿背景 */
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            text-align: center;
            color: #2c7a99;
            font-weight: 500;
        }
        .green-development span {
            margin: 0 0.8rem;
        }
        /* 联系方式板块 */
        .contact {
            margin-top: 3rem;
            padding: 2rem;
            background-color: #fff;
            border-radius: 10px;
            border: 2px solid #90e0a9;
        }
        .contact p {
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
        }
        .contact a {
            color: #2c7a99;
            text-decoration: none;
        }
        .contact a:hover {
            text-decoration: underline;
            color: #1a5c77;
        }
        /* 响应式适配 */
        @media (max-width: 768px) {
            body {
                padding: 1rem;
            }
            .main-title {
                font-size: 1.6rem;
            }
            .second-title {
                font-size: 1.3rem;
            }
            .third-title {
                font-size: 1.1rem;
            }
        }