/* V7：全站主要标题统一为开源思源黑体 / Noto Sans CJK 无衬线体系。 */
:root {
  --title-sans: "Source Han Sans SC", "Source Han Sans CN", "Noto Sans CJK SC",
    "Noto Sans SC", "PingFang SC", "Microsoft YaHei UI", Arial, sans-serif;
}

.hero-copy h1,
.section-title h2,
.company-copy h2,
.certificate-copy h3,
.science-grid h4,
.research-feature h3,
.research-cards h3,
.product-copy h3,
.product-honors-copy h2,
.brand-quote strong,
.hero-certificate strong {
  font-family: var(--title-sans) !important;
  font-style: normal;
}