:root{--color-text: #222;--color-text-sub: #919191;--color-bg: #f7f7f7;--color-surface: #fff;--color-border: #eee;--color-link: #1a73e8;--font-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", system-ui, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);font-size:15px;line-height:1.8;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.site-header[data-astro-cid-37fxchfa]{background:var(--color-surface);border-bottom:1px solid var(--color-border)}.header-inner[data-astro-cid-37fxchfa]{max-width:780px;margin:0 auto;padding:.9rem 1rem;display:flex;align-items:center;justify-content:space-between}.site-logo[data-astro-cid-37fxchfa]{font-size:1.1rem;font-weight:700;color:var(--color-text)}.logo-sub[data-astro-cid-37fxchfa]{font-weight:400;color:var(--color-text-sub);margin-left:.15em;font-size:.85em}.site-nav[data-astro-cid-37fxchfa]{display:flex;gap:1.25rem}.site-nav[data-astro-cid-37fxchfa] a[data-astro-cid-37fxchfa]{color:var(--color-text-sub);font-size:.85rem}.site-nav[data-astro-cid-37fxchfa] a[data-astro-cid-37fxchfa]:hover{color:var(--color-text)}.menu-toggle[data-astro-cid-37fxchfa]{display:none;width:2.75rem;height:2.75rem;border:1px solid var(--color-border);border-radius:999px;background:var(--color-surface);color:var(--color-text);align-items:center;justify-content:center;gap:.22rem;flex-direction:column;cursor:pointer}.menu-toggle[data-astro-cid-37fxchfa] span[data-astro-cid-37fxchfa]{width:1rem;height:1px;background:currentColor;transition:transform .18s ease,opacity .18s ease}body[data-mobile-nav-open=true] .menu-toggle[data-astro-cid-37fxchfa] span[data-astro-cid-37fxchfa]:nth-child(1){transform:translateY(.32rem) rotate(45deg)}body[data-mobile-nav-open=true] .menu-toggle[data-astro-cid-37fxchfa] span[data-astro-cid-37fxchfa]:nth-child(2){opacity:0}body[data-mobile-nav-open=true] .menu-toggle[data-astro-cid-37fxchfa] span[data-astro-cid-37fxchfa]:nth-child(3){transform:translateY(-.32rem) rotate(-45deg)}.main-content[data-astro-cid-37fxchfa]{max-width:780px;margin:0 auto;padding:1.5rem 1rem 3rem;min-height:100dvh}.main-content[data-astro-cid-37fxchfa].wide{max-width:780px}.mobile-nav-shell[data-astro-cid-37fxchfa]{display:none}.mobile-nav-overlay[data-astro-cid-37fxchfa],.mobile-nav-close[data-astro-cid-37fxchfa]{border:none;background:transparent}.site-footer[data-astro-cid-37fxchfa]{border-top:1px solid var(--color-border);padding:1.25rem 1rem;text-align:center;font-size:.78rem;color:var(--color-text-sub)}@media(max-width:768px){.site-nav[data-astro-cid-37fxchfa]{display:none}.menu-toggle[data-astro-cid-37fxchfa]{display:inline-flex}.mobile-nav-shell[data-astro-cid-37fxchfa]{display:block}.mobile-nav-overlay[data-astro-cid-37fxchfa]{position:fixed;inset:0;background:#14141447;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .22s ease,visibility .22s ease;z-index:40}.mobile-nav-drawer[data-astro-cid-37fxchfa]{position:fixed;top:0;right:0;width:min(84vw,320px);height:100dvh;padding:1rem 1rem 1.5rem;background:var(--color-surface);border-left:1px solid var(--color-border);transform:translate(100%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease;z-index:50;display:flex;flex-direction:column}.mobile-nav-header[data-astro-cid-37fxchfa]{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}.mobile-nav-header[data-astro-cid-37fxchfa] p[data-astro-cid-37fxchfa]{font-size:.78rem;color:var(--color-text-sub);letter-spacing:.08em;text-transform:uppercase}.mobile-nav-close[data-astro-cid-37fxchfa]{font-size:1.5rem;line-height:1;color:var(--color-text-sub);cursor:pointer;padding:.25rem}.mobile-nav-links[data-astro-cid-37fxchfa]{display:flex;flex-direction:column}.mobile-nav-link[data-astro-cid-37fxchfa]{display:block;padding:.9rem 0;border-bottom:1px solid var(--color-border);color:var(--color-text);font-size:.98rem}body[data-mobile-nav-open=true] .mobile-nav-overlay[data-astro-cid-37fxchfa]{opacity:1;visibility:visible;pointer-events:auto}body[data-mobile-nav-open=true] .mobile-nav-drawer[data-astro-cid-37fxchfa]{transform:translate(0);visibility:visible;pointer-events:auto}}@media(max-width:600px){.header-inner[data-astro-cid-37fxchfa]{padding:.7rem .75rem}.main-content[data-astro-cid-37fxchfa]{padding:1rem .75rem 2rem}}