.home-shell{padding-inline:1.25rem;width:min(100%,72rem);margin-inline:auto;padding-bottom:3rem}.cover{border-bottom:1px solid var(--color-fd-border);grid-template-columns:minmax(0,1fr) minmax(10rem,18rem);align-items:center;gap:clamp(1.5rem,3vw,2.5rem);padding-block:3rem;animation:.52s ease-out both home-intro-rise;display:grid}.cover-brand{justify-content:center;align-items:center;display:flex}.cover-logo{object-fit:contain;width:100%;max-width:18rem;height:auto}.eyebrow{color:var(--color-fd-primary);letter-spacing:.12em;margin:0 0 .85rem;font-size:.72rem;font-weight:700}.cover h1,.chapter strong{font-family:var(--font-serif), "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif}.cover h1{max-width:42rem;color:var(--color-fd-foreground);letter-spacing:-.055em;text-wrap:balance;margin:0;font-size:clamp(2.6rem,5.6vw,4.8rem);font-weight:700;line-height:1.12}.cover-copy>p:last-child{max-width:36rem;color:var(--color-fd-muted-foreground);margin:1.15rem 0 0;font-size:clamp(1rem,1.6vw,1.1rem);line-height:1.75}.chapter-index{border-bottom:1px solid var(--color-fd-border);grid-template-columns:repeat(5,minmax(0,1fr));animation:.52s ease-out 80ms both home-intro-rise;display:grid}.chapter{border-inline-end:1px solid var(--color-fd-border);min-width:0;color:inherit;padding:1.5rem;text-decoration:none;transition:background .16s,transform .16s,color .16s;display:block}.chapter:last-child{border-inline-end:0}.chapter:hover{background:color-mix(in srgb, var(--chapter-accent), transparent 95%);color:var(--color-fd-primary);text-decoration:none;transform:translateY(-2px)}.chapter-line{background:var(--chapter-accent);width:2rem;height:3px;margin-bottom:1.25rem;transition:width .18s;display:block}.chapter:hover .chapter-line{width:3.25rem}.chapter-number{color:var(--color-fd-muted-foreground);letter-spacing:.08em;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.62rem;font-weight:700;display:block}.chapter strong{color:var(--color-fd-foreground);margin-top:.75rem;font-size:1.2rem;line-height:1.25;display:block}.chapter-title{color:var(--chapter-accent);margin-top:.35rem;font-size:.76rem;font-weight:700;display:block}.chapter p{color:var(--color-fd-muted-foreground);margin:1rem 0 0;font-size:.82rem;line-height:1.65}.chapter.blue{--chapter-accent:#79a7ff}.chapter.cyan{--chapter-accent:#5ec8d8}.chapter.green{--chapter-accent:#7bd88f}.chapter.amber{--chapter-accent:#f3be62}.chapter.orange{--chapter-accent:#f0a060}.utility-row{grid-template-columns:auto minmax(0,1fr);align-items:center;gap:2rem;padding-block:1.5rem;animation:.52s ease-out .14s both home-intro-rise;display:grid}.site-stat{color:var(--color-fd-muted-foreground);white-space:nowrap;margin:0;font-size:.82rem}.site-stat strong{color:var(--color-fd-primary);font-size:1.05rem}.quick-links{flex-wrap:wrap;justify-content:flex-end;gap:0;display:flex}.quick-links a{color:var(--color-fd-muted-foreground);font-size:.78rem;font-weight:600;text-decoration:none;transition:color .16s}.quick-links a:not(:last-child):after{content:"/";color:var(--color-fd-border);margin:0 .65rem}.quick-links a:hover{color:var(--color-fd-primary);text-decoration:none}.chapter:focus-visible,.quick-links a:focus-visible{outline:2px solid var(--color-fd-primary);outline-offset:4px}@keyframes home-intro-rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:64rem){.cover{grid-template-columns:minmax(0,1fr) minmax(8rem,14rem)}.chapter-index{grid-template-columns:repeat(2,minmax(0,1fr))}.chapter{border-bottom:1px solid var(--color-fd-border)}.chapter:nth-child(2n){border-inline-end:0}.chapter:last-child{border-bottom:0;grid-column:1/-1}.utility-row{grid-template-columns:1fr;gap:.9rem}.quick-links{justify-content:flex-start}}@media (max-width:40rem){.cover{grid-template-columns:1fr;justify-items:start;padding-block:1.5rem 2rem}.cover-brand{order:-1}.cover-logo{max-width:12rem}.cover h1{font-size:clamp(2.25rem,11vw,2.9rem)}.chapter-index{grid-template-columns:1fr}.chapter,.chapter:nth-child(2n){border-inline-end:0;border-bottom:1px solid var(--color-fd-border)}.chapter:last-child{border-bottom:0;grid-column:auto}}@media (prefers-reduced-motion:reduce){.cover,.chapter-index,.utility-row{animation:none}.chapter,.chapter-line{transition:none}.chapter:hover{transform:none}}