:root{--accent:#347687;--accent-light:#4a9ab0;--accent-dark:#255868;--accent-rgb:52, 118, 135;--black:30, 30, 30;--gray:100, 116, 139;--gray-light:226, 232, 240;--gray-dark:51, 65, 85;--bg:#f6f7f9;--card-bg:#fff;--box-shadow:0 1px 2px #0f172a0a, 0 1px 3px #0f172a0d;--box-shadow-hover:0 10px 28px #0f172a1a;--radius-card:16px;--radius-tile:20px;--radius-pill:999px;--surface-soft:rgba(var(--accent-rgb), .07);--border-soft:rgba(var(--accent-rgb), .16);--article-text:#3c3c3c;--article-heading:#1a1a1a;--article-border:#e0e0e0;--article-border-light:#f0f0f0;--article-sub-bg:#f8f9fa;--article-radius:10px;--font-mono:ui-monospace, SFMono-Regular, Menlo, Consolas, "Hiragino Kaku Gothic ProN", monospace}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:rgb(var(--black));letter-spacing:.01em;word-wrap:break-word;overflow-wrap:break-word;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;margin:0;padding:0;font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,Noto Sans JP,sans-serif;font-size:17px;line-height:1.8}h1,h2,h3,h4,h5,h6{color:rgb(var(--black));margin:0 0 .5rem;scroll-margin-top:100px;line-height:1.3}h1{font-size:2.1rem}h2{margin:1rem 0 .5rem;font-size:1.65rem}h3{font-size:1.35rem}h4{font-size:1.18rem}a{color:var(--accent);text-decoration:none}@media (hover:hover) and (pointer:fine){a:hover{color:var(--accent-light)}}p{margin:0 0 1em}img{border-radius:8px;max-width:100%;height:auto}strong,b{font-weight:700}code{background-color:rgb(var(--gray-light));font-family:var(--font-mono);border-radius:4px;padding:2px 6px;font-size:.875em}blockquote{border-left:4px solid var(--accent);color:rgb(var(--gray-dark));margin:0 0 1em;padding:.5em 0 .5em 1.25em;font-style:italic}hr{border:none;border-top:1px solid rgb(var(--gray-light));margin:2em 0}table{border-collapse:collapse;width:100%}th,td{border:1px solid rgb(var(--gray-light));text-align:left;padding:.5em .75em}th{background:rgb(var(--gray-light))}ul,ol{padding-left:1.5em}#back-to-top[data-astro-cid-vy5be4ad]{z-index:100;background:var(--accent);color:#fff;cursor:pointer;opacity:0;visibility:hidden;border:none;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;transition:opacity .3s,visibility .3s,background .15s;display:flex;position:fixed;bottom:1.5rem;right:1.5rem;box-shadow:0 2px 10px #00000026}#back-to-top[data-astro-cid-vy5be4ad].visible{opacity:1;visibility:visible}#back-to-top[data-astro-cid-vy5be4ad]:hover{background:var(--accent-dark)}@media (width<=640px){#back-to-top[data-astro-cid-vy5be4ad]{bottom:1rem;right:1rem}}footer[data-astro-cid-jo6i4kqk]{background:var(--card-bg);border-top:1px solid var(--border-soft);color:rgb(var(--gray-dark));margin-top:3rem;padding:2.75rem 1.25rem 3.5rem}.footer-inner[data-astro-cid-jo6i4kqk]{max-width:1300px;margin:0 auto}.footer-brand[data-astro-cid-jo6i4kqk]{margin-bottom:2rem}.footer-logo[data-astro-cid-jo6i4kqk]{letter-spacing:.04em;color:var(--accent-dark);margin:0;font-size:1.3rem;font-weight:700}.footer-tagline[data-astro-cid-jo6i4kqk]{color:rgb(var(--gray));margin:.1rem 0 0;font-size:.88rem}.footer-cols[data-astro-cid-jo6i4kqk]{border-bottom:1px solid var(--article-border-light);grid-template-columns:repeat(3,minmax(0,1fr));gap:1.75rem;padding-bottom:2rem;display:grid}.footer-col-title[data-astro-cid-jo6i4kqk]{color:var(--article-heading);margin:0 0 .75rem;font-size:.95rem;font-weight:700}.footer-col[data-astro-cid-jo6i4kqk] ul[data-astro-cid-jo6i4kqk]{flex-direction:column;gap:.5rem;margin:0;padding:0;list-style:none;display:flex}.footer-col[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]{color:rgb(var(--gray-dark));font-size:.92rem;text-decoration:none;transition:color .15s}@media (hover:hover) and (pointer:fine){.footer-col[data-astro-cid-jo6i4kqk] a[data-astro-cid-jo6i4kqk]:hover{color:var(--accent)}}.footer-bottom[data-astro-cid-jo6i4kqk]{padding-top:1.75rem}.disclaimer-note[data-astro-cid-jo6i4kqk]{color:rgb(var(--gray));margin:0 0 .6rem;font-size:.83rem;line-height:1.7}.copyright[data-astro-cid-jo6i4kqk]{color:rgb(var(--gray));margin:1rem 0 0;font-size:.88rem}@media (width<=640px){footer[data-astro-cid-jo6i4kqk]{padding:2.25rem 1.25rem 3rem}.footer-cols[data-astro-cid-jo6i4kqk]{grid-template-columns:1fr;gap:1.5rem}}.tile-band[data-astro-cid-2bcyqgzq]{background:#e9eff1;padding:33px 1.25rem}.tile-band-inner[data-astro-cid-2bcyqgzq]{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;max-width:1260px;margin:0 auto;display:grid}.tile[data-astro-cid-2bcyqgzq]{border-radius:8px;text-decoration:none;transition:transform .18s,box-shadow .18s;display:block;position:relative;overflow:hidden;box-shadow:0 2px 6px #0f172a0f}.tile[data-astro-cid-2bcyqgzq].is-current{outline:2px solid var(--accent);outline-offset:2px}@media (hover:hover) and (pointer:fine){.tile[data-astro-cid-2bcyqgzq]:hover{transform:translateY(-3px);box-shadow:0 10px 20px #0f172a1f}}.tile-img[data-astro-cid-2bcyqgzq]{aspect-ratio:16/9;object-fit:cover;border-radius:0;width:100%;height:auto;display:block}.sr-only[data-astro-cid-2bcyqgzq]{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (width<=900px){.tile-band[data-astro-cid-2bcyqgzq]{padding:20px 1.25rem}.tile-band-inner[data-astro-cid-2bcyqgzq]{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}}@media (width<=560px){.tile-band[data-astro-cid-2bcyqgzq]{padding:10px .75rem}.tile-band-inner[data-astro-cid-2bcyqgzq]{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-width:92%}}body.mobile-menu-open{overflow:hidden}.skip-link[data-astro-cid-nen7h5rs]{color:var(--accent-dark);border-radius:0 0 var(--radius-card) var(--radius-card);z-index:200;background:#fff;padding:.5rem 1rem;font-size:.85rem;font-weight:600;text-decoration:none;position:fixed;top:-100%;left:1rem;box-shadow:0 2px 8px #00000026}.skip-link[data-astro-cid-nen7h5rs]:focus{top:0}.announcement-bar[data-astro-cid-nen7h5rs]{background-color:#ef4444;justify-content:center;align-items:center;gap:.75rem;padding:.6rem 2.5rem .6rem 1rem;display:flex;position:relative}.announcement-link[data-astro-cid-nen7h5rs]{color:#fff;text-align:center;flex-wrap:wrap;justify-content:center;align-items:center;gap:.5em;font-size:.88rem;font-weight:600;line-height:1.4;text-decoration:none;display:inline-flex}@media (hover:hover) and (pointer:fine){.announcement-link[data-astro-cid-nen7h5rs]:hover{text-underline-offset:2px;text-decoration:underline}}.announcement-close[data-astro-cid-nen7h5rs]{color:#ffffffbf;cursor:pointer;background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;width:28px;height:28px;font-size:1.3rem;line-height:1;display:flex;position:absolute;top:50%;right:.75rem;transform:translateY(-50%)}@media (hover:hover) and (pointer:fine){.announcement-close[data-astro-cid-nen7h5rs]:hover{color:#fff;background:#ffffff26}}@media (width<=480px){.announcement-link[data-astro-cid-nen7h5rs]{font-size:.78rem}}header[data-astro-cid-nen7h5rs]{background-color:var(--card-bg);border-bottom:1px solid var(--border-soft);z-index:100;position:sticky;top:0}.inner[data-astro-cid-nen7h5rs]{align-items:center;gap:1.25rem;max-width:1300px;height:100px;margin:0 auto;padding:0 1.25rem;display:flex}.logo[data-astro-cid-nen7h5rs]{flex-shrink:0;align-items:center;gap:.6rem;margin-right:auto;text-decoration:none;display:inline-flex}.logo-mark[data-astro-cid-nen7h5rs]{background:var(--surface-soft);width:40px;height:40px;color:var(--accent);border-radius:11px;flex-shrink:0;padding:5px;display:inline-flex}.logo-mark[data-astro-cid-nen7h5rs] svg[data-astro-cid-nen7h5rs]{width:100%;height:100%}.logo-text[data-astro-cid-nen7h5rs]{flex-direction:column;line-height:1.25;display:flex}.logo-title[data-astro-cid-nen7h5rs]{color:var(--accent-dark);letter-spacing:.04em;font-size:1.4rem;font-weight:700}.logo-tagline[data-astro-cid-nen7h5rs]{color:rgb(var(--gray));letter-spacing:.02em;font-size:.76rem}.site-nav[data-astro-cid-nen7h5rs]{align-items:center;gap:.35rem;display:flex}.nav-link[data-astro-cid-nen7h5rs]{color:rgb(var(--gray-dark));border-radius:var(--radius-pill);white-space:nowrap;padding:.45em .7em;font-size:.98rem;font-weight:500;text-decoration:none;transition:color .15s,background .15s;position:relative}.nav-link[data-astro-cid-nen7h5rs].active{color:var(--accent-dark);font-weight:700}.nav-link[data-astro-cid-nen7h5rs].active:after{content:"";border-radius:var(--radius-pill);background:var(--accent);height:2px;position:absolute;bottom:.1em;left:.7em;right:.7em}@media (hover:hover) and (pointer:fine){.nav-link[data-astro-cid-nen7h5rs]:hover{color:var(--accent-dark);background:var(--surface-soft)}}.header-actions[data-astro-cid-nen7h5rs]{flex-shrink:0;align-items:center;gap:.6rem;display:flex}.icon-button[data-astro-cid-nen7h5rs]{border-radius:var(--radius-pill);width:46px;height:46px;color:var(--accent-dark);background:var(--surface-soft);justify-content:center;align-items:center;text-decoration:none;transition:background .15s,color .15s;display:inline-flex}@media (hover:hover) and (pointer:fine){.icon-button[data-astro-cid-nen7h5rs]:hover{background:rgba(var(--accent-rgb), .15);color:var(--accent-dark)}}.header-cta[data-astro-cid-nen7h5rs]{border-radius:var(--radius-pill);background:var(--accent);color:#fff;white-space:nowrap;min-height:46px;box-shadow:0 2px 8px rgba(var(--accent-rgb), .28);justify-content:center;align-items:center;padding:.55rem 1.35rem;font-size:.95rem;font-weight:700;text-decoration:none;transition:background .15s,transform .15s;display:inline-flex}@media (hover:hover) and (pointer:fine){.header-cta[data-astro-cid-nen7h5rs]:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px)}}.mobile-menu[data-astro-cid-nen7h5rs],.quick-nav[data-astro-cid-nen7h5rs]{display:none}.quick-link[data-astro-cid-nen7h5rs]{color:rgb(var(--gray-dark));flex-direction:column;flex:1;align-items:center;gap:.1rem;min-width:0;padding:.4rem .25rem .45rem;text-decoration:none;display:flex;position:relative}.quick-link[data-astro-cid-nen7h5rs]+.quick-link[data-astro-cid-nen7h5rs]:before{content:"";background:var(--border-soft);width:1px;position:absolute;top:22%;bottom:22%;left:0}.quick-icon[data-astro-cid-nen7h5rs]{color:var(--accent);display:inline-flex}.quick-label[data-astro-cid-nen7h5rs]{letter-spacing:.02em;font-size:.78rem;font-weight:600}@media (width<=1024px){.site-nav[data-astro-cid-nen7h5rs]{display:none}.mobile-menu[data-astro-cid-nen7h5rs]{display:block;position:relative}.quick-nav[data-astro-cid-nen7h5rs]{background:var(--card-bg);border-bottom:1px solid var(--border-soft);max-width:1300px;margin:0 auto;padding:0 .5rem;display:flex}}@media (width<=640px){.inner[data-astro-cid-nen7h5rs]{gap:.4rem;height:60px;padding:0 1rem}.logo-mark[data-astro-cid-nen7h5rs]{border-radius:9px;width:30px;height:30px}.logo-title[data-astro-cid-nen7h5rs]{font-size:1.05rem}.logo-tagline[data-astro-cid-nen7h5rs],.header-cta[data-astro-cid-nen7h5rs]{display:none}}@media (width<=1024px){.mobile-menu[data-astro-cid-nen7h5rs]>.mobile-menu-backdrop[data-astro-cid-nen7h5rs],.mobile-menu[data-astro-cid-nen7h5rs]>.mobile-menu-panel[data-astro-cid-nen7h5rs]{display:block}.mobile-menu[data-astro-cid-nen7h5rs]>summary[data-astro-cid-nen7h5rs]{z-index:135;list-style:none;position:relative}.mobile-menu[data-astro-cid-nen7h5rs]>summary[data-astro-cid-nen7h5rs]::-webkit-details-marker{display:none}.menu-toggle[data-astro-cid-nen7h5rs]{cursor:pointer;background:0 0;border:none;flex-direction:column;justify-content:center;align-items:center;gap:.28rem;width:44px;height:44px;padding:0;display:inline-flex}.menu-toggle[data-astro-cid-nen7h5rs]:focus-visible{outline:2px solid rgba(var(--accent-rgb), .6);outline-offset:2px}.menu-toggle-bar[data-astro-cid-nen7h5rs]{border-radius:var(--radius-pill);background:var(--accent-dark);width:20px;height:2px;transition:transform .15s,opacity .15s;display:block}.mobile-menu[data-astro-cid-nen7h5rs][open] .menu-toggle-bar[data-astro-cid-nen7h5rs]:first-child{transform:translateY(6px)rotate(45deg)}.mobile-menu[data-astro-cid-nen7h5rs][open] .menu-toggle-bar[data-astro-cid-nen7h5rs]:nth-child(2){opacity:0}.mobile-menu[data-astro-cid-nen7h5rs][open] .menu-toggle-bar[data-astro-cid-nen7h5rs]:nth-child(3){transform:translateY(-6px)rotate(-45deg)}.mobile-menu-backdrop[data-astro-cid-nen7h5rs]{opacity:0;pointer-events:none;z-index:130;background:#0f172a52;transition:opacity .2s;position:fixed;inset:0}.mobile-menu-panel[data-astro-cid-nen7h5rs]{width:min(300px,100vw - 2.5rem);height:100dvh;padding:calc(1rem + env(safe-area-inset-top)) 1.5rem calc(1.5rem + env(safe-area-inset-bottom));pointer-events:none;z-index:140;background:#fff;flex-direction:column;transition:transform .24s;display:flex;position:fixed;top:0;right:0;overflow-y:auto;transform:translate(100%);box-shadow:-8px 0 24px #0f172a1a}.mobile-menu[data-astro-cid-nen7h5rs][open] .mobile-menu-backdrop[data-astro-cid-nen7h5rs]{opacity:1;pointer-events:auto}.mobile-menu[data-astro-cid-nen7h5rs][open] .mobile-menu-panel[data-astro-cid-nen7h5rs]{pointer-events:auto;transform:translate(0)}.mobile-menu-close[data-astro-cid-nen7h5rs]{color:#94a3b8;width:44px;height:44px;font:inherit;cursor:pointer;background:0 0;border:none;flex-shrink:0;justify-content:center;align-self:flex-end;align-items:center;margin-bottom:1.25rem;margin-left:auto;padding:0;font-size:1.6rem;line-height:1;display:flex}.mobile-menu-close[data-astro-cid-nen7h5rs]:hover{color:#475569}.mobile-nav[data-astro-cid-nen7h5rs]{flex-direction:column;display:flex}.mobile-nav[data-astro-cid-nen7h5rs] .nav-link[data-astro-cid-nen7h5rs]{text-align:left;color:#334155;border-bottom:1px solid var(--article-border-light);background:0 0;border-radius:0;width:100%;padding:.85rem 0;font-size:.95rem;font-weight:500;display:block}.mobile-nav[data-astro-cid-nen7h5rs] .nav-link[data-astro-cid-nen7h5rs]:first-child{border-top:1px solid var(--article-border-light)}.mobile-nav[data-astro-cid-nen7h5rs] .nav-link[data-astro-cid-nen7h5rs].active{color:var(--accent-dark);background:0 0;font-weight:700}.mobile-nav[data-astro-cid-nen7h5rs] .nav-link[data-astro-cid-nen7h5rs].active:after{display:none}@media (hover:hover) and (pointer:fine){.mobile-nav[data-astro-cid-nen7h5rs] .nav-link[data-astro-cid-nen7h5rs]:hover{color:var(--accent-dark);background:0 0}}.mobile-cta[data-astro-cid-nen7h5rs]{border-radius:var(--radius-pill);background:var(--accent);color:#fff;text-align:center;justify-content:center;align-items:center;min-height:46px;margin-top:1.5rem;padding:.6rem 1.2rem;font-size:.9rem;font-weight:700;text-decoration:none;display:inline-flex}}