/* 全局样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'OpenSans', 'Arial', sans-serif;
        }

        /* 引入OpenSans字体（如需在线加载） */
        @import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;700&display=swap');

        /* FAQ容器 */
        .converter-faq-container {
            max-width: 900px;
            margin: 30px auto;
            padding: 0 20px;
        }

        /* FAQ主标题 */
        .faq-main-title {
            font-size: 26px;
            color: #1B1B1B;
            margin-bottom: 25px;
            font-weight: 700; /* OpenSans-Bold */
            font-family: 'OpenSans-Bold', 'Open Sans', sans-serif;
            border-bottom: 1px solid #e6e6e6;
            padding-bottom: 10px;
        }

        /* 单个FAQ项 */
        .faq-item {
            margin-bottom: 12px;
            border: 1px solid #e1e4e8;
            border-radius: 8px;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }

        .faq-item:hover {
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        /* FAQ问题栏（Q标题） */
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            background-color: #f9f9f9;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700; /* OpenSans-Bold */
            font-family: 'OpenSans-Bold', 'Open Sans', sans-serif;
            color: #1B1B1B; /* Q标题色号 */
            transition: background-color 0.3s ease;
        }

        /* 移动端Q标题适配 */
        @media (max-width: 768px) {
            .faq-question {
                font-size: 14px;
                padding: 15px 18px;
            }
        }

        /* 展开/收起图标 */
        .faq-toggle-icon {
            font-size: 20px;
            font-weight: bold;
            color: #007185;
            transition: transform 0.3s ease;
        }

        /* 展开时图标旋转 */
        .faq-item.active .faq-toggle-icon {
            transform: rotate(45deg);
        }

        /* FAQ答案栏（A内容） */
        .faq-answer {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease, padding 0.5s ease;
            line-height: 1.7;
            color: #616161; /* A内容色号 */
            background-color: #fff;
            font-size: 15px;
            font-weight: 400; /* OpenSans-Regular */
            font-family: 'OpenSans-Regular', 'Open Sans', sans-serif;
        }

        /* 展开答案样式 */
        .faq-item.active .faq-answer {
            padding: 20px 22px 25px;
            max-height: 800px;
        }

        /* 答案内列表样式 */
        .faq-answer ul {
            margin: 8px 0 0 20px;
        }

        .faq-answer li {
            margin-bottom: 5px;
        }

        /* 移动端A内容适配 */
        @media (max-width: 768px) {
            .faq-answer {
                font-size: 13px;
                line-height: 1.6;
            }
            .faq-item.active .faq-answer {
                padding: 15px 18px 20px;
            }
        }