/*
 * 产品、解决方案、案例、视频、技术问答详情页共用标题规则。
 * 标题字号统一收小，优先保持单行；空间不足时再自然换行。
 */

.product-detail-summary h1,
.solution-detail-header h1,
.case-detail-header h1,
.video-detail-header h1,
.question-detail-header h1 {
    margin-top: 0;
    font-size: clamp(24px, 1.8vw, 28px);
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -.02em;
    overflow-wrap: normal;
    word-break: normal;
}

.product-detail-empty h1,
.solution-detail-empty h1,
.case-detail-empty h1,
.video-detail-empty h1,
.question-not-found h1 {
    font-size: clamp(24px, 1.8vw, 28px);
    line-height: 1.3;
}

@media (max-width: 640px) {
    .product-detail-summary h1,
    .solution-detail-header h1,
    .case-detail-header h1,
    .video-detail-header h1,
    .question-detail-header h1,
    .product-detail-empty h1,
    .solution-detail-empty h1,
    .case-detail-empty h1,
    .video-detail-empty h1,
    .question-not-found h1 {
        font-size: 24px;
        line-height: 1.35;
    }
}