.doc-layout{display: grid;gap: 28px;align-items: start;padding-block-start: 8px}.prose{min-width: 0;max-width: 72ch}.prose h1{margin-block-end: 12px;font-size: clamp(1.6rem, 4.4vw, 2.2rem);font-weight: 900;line-height: 1.5;text-wrap: balance}.foot-guide{display: grid;grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));gap: 14px;margin-block: 18px}.fg-step{margin: 0;padding: 12px;border: 1px solid var(--border);border-radius: var(--r-lg);background: var(--card);text-align: center}.fg-step svg{display: block;width: 100%;max-width: 190px;height: auto;margin-inline: auto}.fg-step figcaption{margin-block-start: 8px;font-size: .88rem;line-height: 1.8;color: var(--muted-fg);text-align: start}.fg-step figcaption b{display: inline-grid;place-items: center;width: 22px;height: 22px;margin-inline-end: 4px;border-radius: 50%;background: var(--primary);color: var(--on-primary);font-size: .8rem}.fg-paper{fill: #fff;stroke: var(--border);stroke-width: 1.2}.fg-wall{fill: #52525b}.fg-hatch{stroke: #a1a1aa;stroke-width: 1;fill: none}.fg-label{fill: #fff;font-size: 9px;font-weight: 700}.fg-len{fill: var(--primary);font-size: 10px}.fg-sole, .fg-toe{fill: #e4e4e7;stroke: #71717a;stroke-width: 1.2}.fg-mark{fill: #e11d48}.fg-mark-line{stroke: #e11d48;stroke-width: 1.2}.fg-ruler{fill: #fde68a;stroke: #b45309;stroke-width: 1}.fg-tick{stroke: #92400e;stroke-width: 1}.fg-arrow{stroke: var(--primary);stroke-width: 1.6;fill: none;stroke-linecap: round;stroke-linejoin: round}.prose h2{margin-block: 30px 8px;font-size: 1.3rem;font-weight: 900;line-height: 1.6}.prose h3{margin-block: 20px 6px;font-size: 1.05rem;font-weight: 900}.prose p{margin: 0 0 12px;line-height: 2}.prose ul, .prose ol{margin: 0 0 14px;padding-inline-start: 24px;line-height: 2}.prose ul{list-style: disc}.prose ol{list-style: decimal}.prose li{margin-block: 4px}.prose li::marker{color: var(--primary)}.prose a{color: var(--primary);font-weight: 700;text-decoration: underline;text-underline-offset: 3px}.prose strong{font-weight: 800}.doc-nav{padding: 16px;border: 1px solid var(--border);border-radius: var(--r-lg);background: var(--card)}.doc-nav h2{margin-block-end: 8px;font-size: 1rem;font-weight: 900}.doc-nav a{display: block;padding: 6px 10px;border-radius: 10px;font-weight: 600}.doc-nav a:hover{background: var(--muted)}.doc-nav a[aria-current]{background: var(--soft-primary);color: var(--primary);font-weight: 800}.prose .contact-list{display: grid;gap: 12px;margin: 0 0 8px;padding: 0;list-style: none}.contact-list li{display: flex;align-items: center;gap: 12px;margin: 0}.contact-list .ic{flex: none;width: 22px;height: 22px;color: var(--primary)}.prose .contact-list a{text-decoration: none}.prose .contact-list a:hover{text-decoration: underline}.contact-form{display: grid;gap: 14px;max-width: 560px}.hp{position: absolute;inset-inline-start: -9999px;width: 1px;height: 1px;overflow: hidden}.size-calc{display: grid;gap: 14px;max-width: 420px;padding: 18px;border: 1px solid var(--border);border-radius: var(--r-lg);background: var(--card)}.size-result{min-height: 1.6em;line-height: 1.9}.size-result .big{display: block;font-size: 1.6rem;font-weight: 900;color: var(--primary)}.size-result p{margin: 4px 0 0}.table-wrap{overflow-x: auto;border: 1px solid var(--border);border-radius: var(--r-lg)}.size-table, .md-table{width: 100%;border-collapse: collapse;font-size: .95rem}.size-table th, .size-table td, .md-table th, .md-table td{padding: 10px 14px;text-align: start;border-block-end: 1px solid var(--border)}.size-table tbody tr:last-child td, .md-table tbody tr:last-child td{border: 0}.size-table th, .md-table th{background: var(--muted);font-weight: 800}.prose .table-wrap{margin: 0 0 16px}.size-table tr.hit td{background: var(--soft-primary);font-weight: 800}.article-head{padding-block: 8px 12px}.article-head .chip{display: inline-block;margin-block-end: 10px}.article-head h1{font-size: clamp(1.6rem, 4.6vw, 2.4rem);font-weight: 900;line-height: 1.6;text-wrap: balance}.article-meta{margin: 8px 0 0;font-size: .9rem;color: var(--muted-fg)}.article-layout{display: grid;gap: 20px;align-items: start}.toc{padding: 16px 18px;border: 1px solid var(--border);border-radius: var(--r-lg);background: var(--card)}.toc h2{margin: 0 0 6px;font-size: 1rem;font-weight: 900}.toc ol{margin: 0;padding-inline-start: 22px;list-style: decimal;line-height: 2}.toc li::marker{color: var(--primary);font-weight: 800}.toc a:hover{color: var(--primary)}@media (min-width: 900px){.article-layout{grid-template-columns: minmax(0, 1fr) 270px;gap: 40px}.article-layout .prose{grid-column: 1;grid-row: 1}.toc-box{grid-column: 2;grid-row: 1;position: sticky;inset-block-start: calc(var(--hdr) + 16px)}.doc-layout{grid-template-columns: 250px minmax(0, 1fr);gap: 40px}.doc-nav{order: -1;position: sticky;inset-block-start: calc(var(--hdr) + 16px)}}