.overview>section{max-width:1280px;margin-inline:auto;padding:clamp(2.5rem,5vw,5rem) clamp(1.25rem,4vw,4.5rem)}.overview h1{max-width:16ch;line-height:1.04}.overview h2{max-width:22ch;font-size:clamp(2rem,3.4vw,3.4rem);line-height:1.1}.overview p{line-height:1.75}.overview[lang^=zh] h1{max-width:10em;line-height:1.25}.overview-title-line{text-wrap:wrap;display:block}.overview[lang^=zh] h2{max-width:13em}.overview[lang^=zh] p{line-height:1.95}.overview .overview-lead{max-width:39rem;color:var(--muted);font-size:1.1rem}.overview-hero{grid-template-columns:minmax(0,1.5fr) minmax(15rem,.8fr);align-items:center;gap:clamp(2rem,6vw,6rem);min-height:660px;display:grid}.overview-thread{border-top:1px solid var(--thread);border-bottom:1px solid var(--thread);padding:2rem 1.5rem}.overview-thread ol{border-left:1px dashed var(--thread);margin:2rem 0 0;padding:0 0 0 1.5rem;list-style:none}.overview-thread li{padding-bottom:2rem;position:relative}.overview-thread li:last-child{padding-bottom:0}.overview-thread li:before{content:"";border:1px solid var(--thread);background:var(--paper);border-radius:50%;width:.7rem;height:.7rem;position:absolute;top:.7rem;left:-1.875rem}.overview-thread h2{margin-bottom:.5rem;font-size:1.8rem}.overview-thread p:not(.eyebrow){color:var(--muted);margin-bottom:0;font-size:.95rem}.overview-origin{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:.85fr 1.15fr;gap:3rem;display:grid}.overview-origin p{max-width:40rem;font-size:1.08rem}.overview-section-intro{max-width:48rem}.overview-section-intro>p{color:var(--muted)}.overview-columns{grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.5rem,3vw,3rem);margin-block:2.5rem;display:grid}.overview-columns article{border-top:1px dashed var(--thread);flex-direction:column;align-items:flex-start;padding-top:1.4rem;display:flex}.overview-number{color:var(--thread);font-family:var(--font-annotation);margin-bottom:1.5rem;font-size:.75rem}.overview-columns h3{font-size:clamp(1.65rem,2.5vw,2.4rem)}.overview-columns p{color:var(--muted)}.overview-columns .text-link{margin-top:auto}.overview .text-link{text-underline-offset:.3em;align-items:center;min-height:44px;text-decoration:underline;display:inline-flex}.overview-next{border-top:1px solid var(--line);grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(2rem,5vw,5rem);display:grid}.overview-next p{max-width:35rem;color:var(--muted)}.overview-about-hero{max-width:60rem}.overview-about-hero h1{max-width:21ch;font-size:clamp(2.8rem,5.8vw,5.3rem)}.overview-status{border-top:1px dashed var(--thread)}.overview-status>p{max-width:48rem;color:var(--muted)}@media (max-width:800px){.overview-hero,.overview-origin,.overview-columns,.overview-next{grid-template-columns:1fr}.overview-hero{min-height:auto}.overview-thread{padding-inline:1rem}.overview-origin{gap:.5rem}.overview-columns{gap:2rem}.overview h1{font-size:clamp(2.85rem,11vw,4.5rem)}.overview[lang^=zh] h1{font-size:clamp(1.75rem,8.5vw,3.8rem)}.overview .hero-actions{flex-direction:column;align-items:flex-start;gap:.5rem}}