:root{--font-sans:"Microsoft YaHei", "PingFang SC", system-ui, sans-serif;--heading-weight:700;--heading-tracking:-.035em;--page-title-size:clamp(38px, 4.3vw, 68px);--section-title-size:clamp(28px, 2.7vw, 42px);--content-max-width:1400px;--page-gutter:6vw;--content-width:min(var(--content-max-width), calc(100% - var(--page-gutter) * 2));--content-inset:max(var(--page-gutter), calc((100% - var(--content-max-width)) / 2))}.container,.doc-container{width:var(--content-width);margin-inline:auto}h1,h2,h3,h4,h5{font-family:var(--font-sans);font-weight:var(--heading-weight);letter-spacing:var(--heading-tracking)}@media (width<=1000px){:root{--page-gutter:32px}}@media (width<=720px){:root{--page-gutter:24px;--page-title-size:clamp(34px, 10vw, 44px);--section-title-size:28px}}