:root{--color-bg:#fff;--color-text:#2b2e2c;--color-text-sub:#5d635f;--color-text-mute:#6e746f;--color-primary:#5e7a6a;--color-primary-strong:#48614f;--color-surface:#eef2ec;--color-accent:#b7aecb;--color-accent-soft:#eeeaf3;--color-accent-strong:#5f5680;--color-highlight:#ebcb7e;--color-line:#e2e6e1;--color-line-strong:#c9d0ca;--color-caution-bg:#fbf5e6;--color-caution-line:#e8d29c;--color-caution-ink:#7a5b17;--color-danger:#a8432a;--color-focus:#48614f;--fig-bg:#f3f5f1;--fig-shoe:#fff;--fig-line:#333835;--lace-left:#ecb548;--lace-right:#3e7db8;--font-heading:"Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", sans-serif;--font-body:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;--radius-xs:4px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-pill:999px;--border:1px solid var(--color-line);--container:1120px;--measure:38em;--icon-stroke:1.5px}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font-body);color:var(--color-text);background:var(--color-bg);overflow-wrap:anywhere;-webkit-font-smoothing:antialiased;margin:0;font-size:1rem;line-height:1.85}h1,h2,h3,h4{font-family:var(--font-heading);font-feature-settings:"palt";letter-spacing:.05em;word-break:auto-phrase;margin:0;font-weight:700;line-height:1.5}.heading{font-family:var(--font-heading);font-feature-settings:"palt";letter-spacing:.05em;word-break:auto-phrase;font-weight:700}a{color:inherit;text-decoration:none}img,svg{max-width:100%;height:auto}svg{display:block}:focus-visible{outline:2px solid var(--color-focus);outline-offset:3px;border-radius:2px}.wrap{width:100%;max-width:calc(var(--container) + 40px);margin-inline:auto;padding-inline:20px}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.visually-hidden:focus{z-index:10;clip:auto;color:#fff;background:var(--color-primary-strong);border-radius:var(--radius-pill);width:auto;height:auto;padding:.5em 1em;position:fixed;top:.5rem;left:.5rem}.icon{fill:none;stroke:currentColor;stroke-width:var(--icon-stroke);stroke-linecap:round;stroke-linejoin:round;color:var(--color-text);overflow:visible}.icon .icon-fill{fill:var(--tint-accent,#fff)}.tile{aspect-ratio:1;background:var(--tint,var(--color-surface));border-radius:var(--radius-md);place-items:center;display:grid;position:relative;overflow:hidden}.tile .icon{width:72%;height:auto;position:relative}.chip{letter-spacing:.04em;color:var(--tint-ink,var(--color-primary-strong));background:var(--tint,var(--color-surface));border-radius:var(--radius-xs);padding:2px 10px;font-size:.75rem;font-weight:700;line-height:1.7;display:inline-block}a.chip:hover{text-underline-offset:.25em;text-decoration:underline}.pr-tag{letter-spacing:.06em;color:var(--color-text-sub);border:1px solid var(--color-line-strong);border-radius:3px;flex:none;padding:0 6px;font-size:.6875rem;font-weight:700;line-height:1.6}.sec-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px 24px;margin-bottom:28px;display:flex}.sec-title{font-size:1.5rem;line-height:1.5}.sec-desc{color:var(--color-text-sub);word-break:auto-phrase;margin:4px 0 0;font-size:.9375rem}.text-link{color:var(--color-primary-strong);text-decoration:underline 1px;text-decoration-color:var(--color-line-strong);text-underline-offset:.3em;font-size:.875rem}.text-link:hover{text-decoration-color:currentColor}.btn{color:#fff;background:var(--color-primary);border-radius:var(--radius-pill);justify-content:center;align-items:center;gap:8px;min-height:48px;padding:10px 24px;font-size:.9375rem;font-weight:700;line-height:1.5;transition:background-color .2s;display:inline-flex}.btn:hover,a:hover .btn{background:var(--color-primary-strong)}.crumbs ol{color:var(--color-text-mute);flex-wrap:wrap;margin:0;padding:0;font-size:.75rem;line-height:1.7;list-style:none;display:flex}.crumbs li:not(:last-child):after{content:"/";color:var(--color-line-strong);margin:0 .6em}.crumbs a:hover{color:var(--color-text);text-underline-offset:.25em;text-decoration:underline}.prose{line-height:1.95}:where(.prose>*+*){margin-top:1.1em}:where(.prose>*),.prose p{margin-bottom:0}.prose a:not([class]){color:var(--color-primary-strong);text-underline-offset:.25em;text-decoration:underline 1px}.prose a:not([class]):hover{text-decoration-thickness:2px}.prose h2{margin-top:3.4em;font-size:1.5rem;line-height:1.5}.prose h2:before{content:"";background:var(--color-primary);border-radius:2px;width:28px;height:3px;margin-bottom:16px;display:block}.prose h3{margin-top:2.2em;font-size:1.1875rem;line-height:1.6}.prose :is(h2,h3)+*{margin-top:.75em}.prose h2,.prose h3{scroll-margin-top:24px}.prose :is(ul,ol):not([class]){padding-left:1.4em}.prose :is(ul,ol):not([class])>li+li{margin-top:.35em}.prose ul:not([class])>li::marker{color:var(--color-primary)}.prose ol:not([class])>li::marker{font-family:var(--font-heading);color:var(--color-primary-strong);font-weight:700}.prose strong{-webkit-box-decoration-break:clone;box-decoration-break:clone;background:linear-gradient(#0000 62%,#f5e6bf 62%);font-weight:700}.prose blockquote{color:var(--color-text-sub);border-left:3px solid var(--color-line-strong);margin-inline:0;padding:4px 0 4px 20px}.prose table{border-collapse:collapse;border-top:1px solid var(--color-line-strong);width:100%;font-size:.9375rem;line-height:1.75}.prose th,.prose td{text-align:left;vertical-align:top;border-bottom:var(--border);padding:.75em .9em}.prose th{white-space:nowrap;background:var(--color-surface);font-weight:700}.prose hr{border:0;border-top:var(--border);margin-block:3em}.prose img{border-radius:var(--radius-md)}.fig-bg{fill:var(--fig-bg)}.fig-shoe{fill:var(--fig-shoe);stroke:var(--fig-line);stroke-width:2px}.fig-eyelet{fill:var(--fig-bg);stroke:var(--fig-line);stroke-width:2px}.fig-edge,.fig-lace-l,.fig-lace-r,.fig-arrow{fill:none;stroke-linecap:round;stroke-linejoin:round}.fig-edge{stroke:var(--fig-line);stroke-width:11px}.fig-lace-l{stroke:var(--lace-left);stroke-width:6px}.fig-lace-r{stroke:var(--lace-right);stroke-width:6px}.fig-arrow{stroke:var(--fig-line);stroke-width:2.5px}.fig-knot{fill:var(--lace-right);stroke:var(--fig-line);stroke-width:2.5px}@media (width<=719px){.wrap{padding-inline:16px}.sec-title,.prose h2{font-size:1.3125rem}.prose h3{font-size:1.125rem}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition:none!important;animation:none!important}}.logo[data-astro-cid-f7espo7c]{color:var(--color-text);align-items:center;gap:10px;display:inline-flex}.logo-mark[data-astro-cid-f7espo7c]{flex:none;width:34px;height:34px}.logo-text[data-astro-cid-f7espo7c]{font-family:var(--font-heading);font-feature-settings:"palt";letter-spacing:.08em;white-space:nowrap;font-size:1.25rem;font-weight:700;line-height:1.4}.site-footer[data-astro-cid-jo6i4kqk]{color:var(--color-text-sub);background:var(--color-surface);margin-top:120px;padding-block:56px 32px}.footer-in[data-astro-cid-jo6i4kqk]{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr);gap:40px;display:grid}.about[data-astro-cid-jo6i4kqk]{max-width:24em;margin:16px 0 0;font-size:.875rem;line-height:1.85}.foot-title[data-astro-cid-jo6i4kqk]{letter-spacing:.06em;color:var(--color-text);margin:0;font-size:.8125rem;font-weight:700}.foot-links[data-astro-cid-jo6i4kqk]{gap:6px;margin:12px 0 0;padding:0;font-size:.875rem;line-height:1.7;list-style:none;display:grid}.foot-links[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]:hover{color:var(--color-text);text-underline-offset:.25em;text-decoration:underline}.copy[data-astro-cid-jo6i4kqk]{border-top:1px solid var(--color-line-strong);grid-column:1/-1;margin:0;padding-top:24px;font-size:.75rem}@media (width<=719px){.site-footer[data-astro-cid-jo6i4kqk]{margin-top:96px;padding-top:44px}.footer-in[data-astro-cid-jo6i4kqk]{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px 24px}.brand[data-astro-cid-jo6i4kqk]{grid-column:1/-1}}.site-header[data-astro-cid-nen7h5rs]{background:var(--color-bg);border-bottom:var(--border)}.header-in[data-astro-cid-nen7h5rs]{justify-content:space-between;align-items:center;gap:12px 32px;min-height:76px;display:flex}.gnav[data-astro-cid-nen7h5rs] ul[data-astro-cid-nen7h5rs]{gap:4px;margin:0;padding:0;list-style:none;display:flex}.gnav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{color:var(--color-text-sub);border-radius:var(--radius-pill);align-items:center;gap:8px;padding:6px 12px 6px 6px;font-size:.875rem;line-height:1.5;transition:background-color .2s,color .2s;display:flex}.gnav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]:hover,.gnav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs][aria-current=page]{color:var(--color-text);background:var(--tint)}.gnav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs][aria-current=page] .gnav-label[data-astro-cid-nen7h5rs]{font-weight:700}.gnav-ico[data-astro-cid-nen7h5rs]{--icon-stroke:1.25px;background:var(--tint);border-radius:50%;flex:none;place-items:center;width:32px;height:32px;display:grid}.gnav-ico[data-astro-cid-nen7h5rs] .icon{width:26px;height:26px}.gnav-label[data-astro-cid-nen7h5rs]{white-space:nowrap}@media (width<=959px){.gnav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{padding-right:10px;font-size:.8125rem}}@media (width<=879px){.header-in[data-astro-cid-nen7h5rs]{flex-direction:column;align-items:stretch;gap:10px;min-height:0;padding-block:14px 10px}.header-in[data-astro-cid-nen7h5rs]>.logo{align-self:center}.gnav[data-astro-cid-nen7h5rs] ul[data-astro-cid-nen7h5rs]{grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;display:grid}.gnav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{text-align:center;border-radius:var(--radius-md);flex-direction:column;gap:4px;height:100%;padding:6px 2px;font-size:.8125rem;line-height:1.4}.gnav-label[data-astro-cid-nen7h5rs]{white-space:normal;word-break:auto-phrase}.gnav-ico[data-astro-cid-nen7h5rs]{border-radius:var(--radius-md);width:40px;height:40px}.gnav-ico[data-astro-cid-nen7h5rs] .icon{width:32px;height:32px}}