:root {
            --primary-color: #00296D;
            --text-color: #333;
            --bg-light: #f9f9f9;
            --border-color: #e0e0e0;
        }

        .faq-container {
            max-width: 900px;
            margin: 40px auto;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            padding: 0 20px;
        }

        .faq-title {
            text-align: center;
            color: var(--primary-color);
            margin-bottom: 30px;
            font-size: 28px;
        }

        .faq-item {
            margin-bottom: 15px; /* 控制条目间距 */
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-question {
            background-color: #fff;
            color: var(--text-color);
            padding: 18px 25px;
            width: 100%;
            text-align: left;
            border: none;
            outline: none;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s ease;
        }

        .faq-question:hover {
            background-color: #f0f4fa;
        }

        .faq-question.active {
            color: var(--primary-color);
            border-bottom: 1px solid var(--border-color);
        }

        .faq-question::after {
            content: '+';
            font-size: 22px;
            color: var(--primary-color);
            transition: transform 0.3s ease;
        }

        .faq-question.active::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            background-color: #fff;
        }

        .faq-answer-content {
            padding: 20px 25px;
            line-height: 1.6;
            color: #555;
            font-size: 15px;
        }

        .faq-answer-content strong {
            color: var(--primary-color);
        }