.site-header[data-astro-cid-3ef6ksr2]{position:fixed;inset:0 0 auto;z-index:10;height:var(--header-h);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.inner[data-astro-cid-3ef6ksr2]{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;width:min(100% - 2.5rem,var(--max));height:100%;margin:0 auto;gap:1rem}.brand[data-astro-cid-3ef6ksr2]{display:inline-flex;flex-wrap:wrap;align-items:baseline;gap:.35rem;flex-shrink:0;min-width:0}.brand-icon[data-astro-cid-3ef6ksr2]{width:28px;height:28px;border-radius:50%;object-fit:cover;flex-shrink:0;align-self:center;background:#fff}.brand-name[data-astro-cid-3ef6ksr2]{font-size:.95rem;font-weight:600;letter-spacing:-.02em}.brand-tagline[data-astro-cid-3ef6ksr2]{font-size:.72rem;font-weight:400;letter-spacing:-.01em;color:var(--muted);white-space:nowrap}.header-right[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.75rem;min-width:0}.menu-toggle[data-astro-cid-3ef6ksr2]{display:none;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;padding:0;margin:0 -.35rem 0 0;border:1px solid var(--line);border-radius:.45rem;background:var(--surface);color:var(--text);cursor:pointer;transition:border-color .15s ease,background .15s ease}.menu-toggle[data-astro-cid-3ef6ksr2]:hover,.menu-toggle[data-astro-cid-3ef6ksr2]:focus-visible{outline:none;border-color:#b8b4ab}.menu-toggle-icon[data-astro-cid-3ef6ksr2],.menu-toggle-icon[data-astro-cid-3ef6ksr2]:before,.menu-toggle-icon[data-astro-cid-3ef6ksr2]:after{display:block;width:1rem;height:1.5px;background:currentColor;border-radius:1px;transition:transform .2s ease,opacity .2s ease,top .2s ease}.menu-toggle-icon[data-astro-cid-3ef6ksr2]{position:relative}.menu-toggle-icon[data-astro-cid-3ef6ksr2]:before,.menu-toggle-icon[data-astro-cid-3ef6ksr2]:after{content:"";position:absolute;left:0}.menu-toggle-icon[data-astro-cid-3ef6ksr2]:before{top:-5px}.menu-toggle-icon[data-astro-cid-3ef6ksr2]:after{top:5px}.menu-open[data-astro-cid-3ef6ksr2] .menu-toggle-icon[data-astro-cid-3ef6ksr2]{background:transparent}.menu-open[data-astro-cid-3ef6ksr2] .menu-toggle-icon[data-astro-cid-3ef6ksr2]:before{top:0;transform:rotate(45deg)}.menu-open[data-astro-cid-3ef6ksr2] .menu-toggle-icon[data-astro-cid-3ef6ksr2]:after{top:0;transform:rotate(-45deg)}.header-menu[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:1.25rem;min-width:0}nav[data-astro-cid-3ef6ksr2] ul[data-astro-cid-3ef6ksr2]{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.25rem 1.25rem;margin:0;padding:0;list-style:none}nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{font-size:.75rem;font-weight:500;letter-spacing:.1em;color:var(--muted);transition:color .15s ease}nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]:hover,nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2].active{color:var(--text)}.lang-toggle[data-astro-cid-3ef6ksr2]{display:grid;grid-template-columns:1fr 1fr;gap:.15rem;padding:.15rem;background:var(--surface);border:1px solid var(--line);border-radius:999px;flex-shrink:0}.lang-input[data-astro-cid-3ef6ksr2]{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.lang-tab[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:center;min-width:2rem;padding:.28rem .5rem;font-size:.72rem;font-weight:600;letter-spacing:.04em;color:var(--muted);background:transparent;border-radius:999px;cursor:pointer;transition:background .15s ease,color .15s ease;user-select:none;-webkit-tap-highlight-color:transparent}#lang-ja[data-astro-cid-3ef6ksr2]:checked~label[data-astro-cid-3ef6ksr2][for=lang-ja],#lang-en[data-astro-cid-3ef6ksr2]:checked~label[data-astro-cid-3ef6ksr2][for=lang-en]{color:var(--text);background:var(--bg)}.menu-backdrop[data-astro-cid-3ef6ksr2]{display:none}@media(max-width:767px){.site-header[data-astro-cid-3ef6ksr2]{position:static}.inner[data-astro-cid-3ef6ksr2]{width:min(100% - 1.5rem,var(--max))}.menu-toggle[data-astro-cid-3ef6ksr2]{display:none}.header-right[data-astro-cid-3ef6ksr2]{position:static}.header-menu[data-astro-cid-3ef6ksr2]{position:absolute;top:calc(100% + .55rem);right:0;left:0;display:none;flex-direction:column;align-items:stretch;gap:0;padding:.35rem;background:var(--surface);border:1px solid var(--line);border-radius:.65rem;box-shadow:0 12px 32px #1c1c1c14}.menu-open[data-astro-cid-3ef6ksr2] .header-menu[data-astro-cid-3ef6ksr2]{display:flex}nav[data-astro-cid-3ef6ksr2] ul[data-astro-cid-3ef6ksr2]{flex-direction:column;align-items:stretch;gap:0}nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{display:block;padding:.8rem .9rem;font-size:.8rem;border-radius:.45rem}nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]:hover,nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2].active{background:var(--bg)}.menu-backdrop[data-astro-cid-3ef6ksr2]{display:block;position:fixed;inset:var(--header-h) 0 0;z-index:1;width:100%;padding:0;border:0;background:#1c1c1c2e;cursor:default}}body.menu-open{overflow:hidden}