* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: #ffffff;
            font-family: 'Open Sans', sans-serif;
            padding: 40px 20px;
            line-height: 1.5;
        }

        /* FAQ 模块容器 — 与规格表背景一致 */
        .faq-module {
            max-width: 1280px;
            margin: 40px auto;
            background-color: #f9fafb;
            border-radius: 24px;
            padding: 48px 24px;
        }

        .faq-title {
            font-family: 'Open Sans', sans-serif;
            font-weight: 700;
            font-size: 35px;
            color: #222222;
            text-align: center;
            margin-bottom: 32px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border-radius: 16px;
            background: #ffffff;
            transition: all 0.2s;
            border: 1px solid #e2e8f0;
        }

        /* 问题区域背景改为白色 */
        .faq-question {
            background: #ffffff;
            border-radius: 16px;
            padding: 16px 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background 0.2s;
            font-weight: 600;
            font-size: 16px;
            color: #1e2a3a;
            line-height: 1.4;
        }

        .faq-question:hover {
            background: #f8fafc;   /* 悬停时轻微灰色，保持可交互感 */
        }

        .question-text {
            flex: 1;
            font-family: 'Open Sans', sans-serif;
            font-weight: 600;
            font-size: 16px;
            color: #222222;
        }

        .faq-icon {
            color: #0047AB;
            font-weight: 700;
            font-size: 20px;
            width: 24px;
            text-align: center;
            transition: transform 0.2s;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out, padding 0.2s;
            background: transparent;
            padding: 0 24px;
            margin-top: 0;
            border-radius: 0 0 16px 16px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 16px 24px 20px 24px;
            transition: max-height 0.4s ease-in, padding 0.2s;
        }

        .faq-answer p {
            font-family: 'Open Sans', sans-serif;
            font-size: 15px;
            line-height: 1.6;
            color: #555555;
            margin: 0;
        }

        /* 移动端适配 */
        @media (max-width: 768px) {
            .faq-module {
                padding: 36px 20px;
                margin: 30px auto;
            }
            .faq-title {
                font-size: 28px;
                margin-bottom: 24px;
            }
            .faq-question {
                padding: 14px 16px;
            }
            .question-text {
                font-size: 15px;
            }
            .faq-icon {
                font-size: 18px;
                width: 22px;
            }
            .faq-answer p {
                font-size: 14px;
            }
            .faq-item.active .faq-answer {
                padding: 14px 20px 18px 20px;
            }
        }

        @media (max-width: 480px) {
            .faq-module {
                padding: 28px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 12px 16px 16px 16px;
            }
        }