/* 引入优雅的无衬线字体，提升高级感 */
    @import url('https://fonts.googleapis.com/css2?family=Jost:wght@400;500;600&display=swap');

    :root {
        --primary-color: #030165; /* 品牌主色调 */
        --bg-color: #f9f9fb;
        --text-color: #333333;
        --text-light: #666666;
        --border-color: #e0e0e0;
    }

    body {
        font-family: 'Jost', sans-serif;
        background-color: var(--bg-color);
        margin: 0;
        padding: 40px 20px;
    }

    .edv-faq-wrapper {
        max-width: 800px;
        margin: 0 auto;
        background: #ffffff;
        padding: 50px;
        border-radius: 12px;
        box-shadow: 0 10px 30px rgba(3, 1, 101, 0.08); /* 略带主色调的阴影 */
    }

    .edv-faq-title {
        text-align: center;
        color: var(--primary-color);
        font-size: 32px;
        font-weight: 600;
        margin-bottom: 10px;
        letter-spacing: 1px;
    }

    .edv-faq-subtitle {
        text-align: center;
        color: var(--text-light);
        font-size: 16px;
        margin-bottom: 40px;
    }

    .edv-faq-item {
        border-bottom: 1px solid var(--border-color);
        margin-bottom: 15px;
    }

    .edv-faq-item:last-child {
        border-bottom: none;
        margin-bottom: 0;
    }

    .edv-faq-question {
        width: 100%;
        background: none;
        border: none;
        padding: 20px 15px;
        font-size: 18px;
        font-weight: 500;
        color: var(--text-color);
        text-align: left;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        transition: color 0.3s ease;
        font-family: inherit;
    }

    /* 悬停和激活状态的文字颜色变为品牌主色 */
    .edv-faq-question:hover, 
    .edv-faq-question.active {
        color: var(--primary-color);
    }

    /* 加号/减号图标设计 */
    .edv-faq-icon {
        position: relative;
        width: 20px;
        height: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .edv-faq-icon::before,
    .edv-faq-icon::after {
        content: '';
        position: absolute;
        background-color: var(--text-color);
        transition: transform 0.3s ease, background-color 0.3s ease;
    }

    .edv-faq-icon::before {
        width: 2px;
        height: 16px;
    }

    .edv-faq-icon::after {
        width: 16px;
        height: 2px;
    }

    .edv-faq-question:hover .edv-faq-icon::before,
    .edv-faq-question:hover .edv-faq-icon::after,
    .edv-faq-question.active .edv-faq-icon::before,
    .edv-faq-question.active .edv-faq-icon::after {
        background-color: var(--primary-color);
    }

    /* 激活状态下，垂直的线旋转消失，变成减号 */
    .edv-faq-question.active .edv-faq-icon::before {
        transform: rotate(90deg);
        opacity: 0;
    }

    .edv-faq-question.active .edv-faq-icon::after {
        transform: rotate(180deg);
    }

    .edv-faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-out;
    }

    .edv-faq-answer-inner {
        padding: 0 15px 25px 15px;
        color: var(--text-light);
        font-size: 16px;
        line-height: 1.6;
        border-left: 3px solid transparent;
        transition: border-color 0.3s ease;
    }

    /* 展开后左侧有一个主色调的细线装饰 */
    .edv-faq-question.active + .edv-faq-answer .edv-faq-answer-inner {
        border-left: 3px solid var(--primary-color);
    }

    /* 移动端适配 */
    @media (max-width: 600px) {
        .edv-faq-wrapper {
            padding: 30px 20px;
        }
        .edv-faq-title {
            font-size: 26px;
        }
        .edv-faq-question {
            font-size: 16px;
            padding: 15px 10px;
        }
    }