:root{color-scheme:light;--ink: #17181c;--ink-soft: #363940;--ink-muted: #676b73;--ink-faint: #9599a1;--surface: #f8f8f9;--surface-strong: #ffffff;--surface-subtle: #f1f2f4;--line: #dfe2e6;--line-strong: #cdd1d7;--accent-yellow: #ffad00;--accent-orange: #fe8929;--accent-pink: #ff196c;--accent-violet: #910098;--accent-indigo: #5400b2;--focus: #5400b2;--signal-gradient: linear-gradient( 90deg, var(--accent-yellow) 0%, var(--accent-orange) 24%, var(--accent-pink) 49%, var(--accent-violet) 74%, var(--accent-indigo) 100% );--primary-label: 23, 24, 28;--secondary-label: 103, 107, 115;--tertiary-label: 149, 153, 161;--quaternary-label: 223, 226, 230;--theme-yellow: 255, 173, 0;--theme-orange: 254, 137, 41;--theme-pink: 255, 25, 108;--theme-purple: 145, 0, 152;--theme-indigo: 84, 0, 178;--gray: 103, 107, 115;--gray2: 149, 153, 161;--gray3: 181, 185, 191;--gray4: 205, 209, 215;--gray5: 223, 226, 230;--gray6: 241, 242, 244;--base-bg: 248, 248, 249;--footer-bg: 23, 24, 28;--white: 255, 255, 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auto;padding:0}.prose .main-content{min-width:0}.prose .main-content>:first-child{margin-top:0}.prose p,.prose li{font-size:1rem;line-height:1.85}.prose p{margin-block:1.25em}.prose ol,.prose ul{margin-block:1.25em;padding-inline-start:1.35em}.prose h2{position:relative;margin:2.6em 0 .8em;padding-top:.85rem;border-top:1px solid var(--line)}.prose h2:before{content:"";position:absolute;top:-1px;left:0;width:4rem;height:2px;background:var(--signal-gradient)}.prose h3{margin:2.1em 0 .7em}.prose h3:before{content:none}.prose a{text-decoration-color:rgba(var(--theme-indigo),.4);text-decoration-thickness:1px;text-underline-offset:.18em}.prose a:hover{color:var(--accent-indigo)}.prose blockquote{position:relative;margin:var(--space-6) 0;padding:var(--space-5);color:var(--ink-soft);background:var(--surface-subtle);border:1px solid var(--line);border-left:3px solid var(--accent-indigo);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:1rem}.prose blockquote p{margin:0}.prose 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1024px){.show-pc{display:block!important}.hide-pc{display:none!important}.prose{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:clamp(2rem,5vw,4rem);align-items:start}.prose aside{grid-column:2;grid-row:1}.prose .main-content{grid-column:1;grid-row:1}.prose p,.prose li{font-size:1.0625rem}}.section-reveal{opacity:1;transform:none}.js .section-reveal{opacity:0;transform:translateY(12px);transition:opacity .48s cubic-bezier(.22,1,.36,1),transform .48s cubic-bezier(.22,1,.36,1)}.js .section-reveal.is-visible{opacity:1;transform:translateY(0)}.section-reveal[data-reveal-order="1"]{transition-delay:0ms}.section-reveal[data-reveal-order="2"]{transition-delay:40ms}.section-reveal[data-reveal-order="3"]{transition-delay:80ms}.section-reveal[data-reveal-order="4"]{transition-delay:.12s}.section-reveal[data-reveal-order="5"]{transition-delay:.16s}@media (prefers-reduced-motion: 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var(--line);list-style:none}.mobile-menu[data-astro-cid-3ef6ksr2] li[data-astro-cid-3ef6ksr2]{border-bottom:1px solid var(--line)}.mobile-link[data-astro-cid-3ef6ksr2]{display:grid;min-height:68px;grid-template-columns:2rem 1fr auto;align-items:center;gap:.5rem;font-size:clamp(1.25rem,6vw,1.75rem);font-weight:700;text-decoration:none}.mobile-link__index[data-astro-cid-3ef6ksr2]{color:var(--ink-faint);font-family:OttercoDisplay,sans-serif;font-size:.65rem;font-weight:500;letter-spacing:.08em}.mobile-link__arrow[data-astro-cid-3ef6ksr2]{color:var(--ink-muted);font-size:.9rem;font-weight:400}.mobile-menu__language[data-astro-cid-3ef6ksr2]{display:flex;margin-top:var(--space-6);align-items:center;gap:1rem;color:var(--ink-muted);font-size:.75rem;letter-spacing:.08em}.mobile-menu__language[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{display:inline-flex;min-width:44px;min-height:44px;align-items:center;justify-content:center;color:var(--ink);border:1px solid var(--line);border-radius:var(--radius-pill);text-decoration:none}@media (min-width: 768px){.site-header[data-astro-cid-3ef6ksr2]{height:var(--header-height-tab)}.logo[data-astro-cid-3ef6ksr2]{width:34px;height:34px}.text-logo[data-astro-cid-3ef6ksr2]{height:14px;margin-left:10px}.mobile-menu[data-astro-cid-3ef6ksr2]{height:calc(100dvh - var(--header-height-tab))}}@media (min-width: 1024px){.site-header[data-astro-cid-3ef6ksr2]{height:var(--header-height-pc)}.desktop-nav[data-astro-cid-3ef6ksr2]{display:block}.menu-toggle[data-astro-cid-3ef6ksr2],.mobile-menu[data-astro-cid-3ef6ksr2]{display:none}.logo[data-astro-cid-3ef6ksr2]{width:38px;height:38px}.text-logo[data-astro-cid-3ef6ksr2]{height:15px}}@media (prefers-reduced-motion: reduce){.mobile-menu[data-astro-cid-3ef6ksr2],.menu-toggle__icon[data-astro-cid-3ef6ksr2] span[data-astro-cid-3ef6ksr2],.nav-link[data-astro-cid-3ef6ksr2]:after{transition:none}}.site-footer[data-astro-cid-sz7xmlte]{position:relative;overflow:hidden;color:#fff;background:#141519}.site-footer[data-astro-cid-sz7xmlte]:before{content:"";position:absolute;inset:0;opacity:.12;background-image:linear-gradient(rgba(255,255,255,.18) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.18) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(circle at 16% 40%,black,transparent 62%)}.footer-signal[data-astro-cid-sz7xmlte]{position:relative;z-index:1;display:grid;width:min(180px,48vw);height:3px;grid-template-columns:repeat(5,1fr)}.footer-signal[data-astro-cid-sz7xmlte] i[data-astro-cid-sz7xmlte]{background:var(--accent-yellow)}.footer-signal[data-astro-cid-sz7xmlte] i[data-astro-cid-sz7xmlte]:nth-child(2){background:var(--accent-orange)}.footer-signal[data-astro-cid-sz7xmlte] i[data-astro-cid-sz7xmlte]:nth-child(3){background:var(--accent-pink)}.footer-signal[data-astro-cid-sz7xmlte] i[data-astro-cid-sz7xmlte]:nth-child(4){background:var(--accent-violet)}.footer-signal[data-astro-cid-sz7xmlte] i[data-astro-cid-sz7xmlte]:nth-child(5){background:var(--accent-indigo)}.footer-shell[data-astro-cid-sz7xmlte],.footer-sub[data-astro-cid-sz7xmlte]{position:relative;z-index:1;width:min(calc(100% - (var(--gutter) * 2)),var(--container-wide));margin-inline:auto}.footer-shell[data-astro-cid-sz7xmlte]{display:grid;padding-block:clamp(3rem,6vw,4.5rem);gap:var(--space-7)}.logo-box[data-astro-cid-sz7xmlte]{display:inline-flex;min-height:44px;align-items:center;text-decoration:none}.logo[data-astro-cid-sz7xmlte]{width:38px;height:38px}.text-logo[data-astro-cid-sz7xmlte]{width:auto;height:15px;margin-left:.65rem}.company-message[data-astro-cid-sz7xmlte]{max-width:560px;margin:var(--space-5) 0 0;color:#fff;font-size:clamp(1.35rem,1.08rem + 1.1vw,1.9rem);font-weight:300;letter-spacing:-.02em;line-height:1.2}.company-message--ja[data-astro-cid-sz7xmlte]{max-width:620px;font-family:LINE Seed JP,system-ui,sans-serif;font-weight:700;letter-spacing:-.045em;line-height:1.45}.footer-description[data-astro-cid-sz7xmlte]{max-width:34rem;margin:var(--space-4) 0 0;color:#ffffff94;font-size:.86rem;line-height:1.75}.footer-nav[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-6)}.footer-nav-title[data-astro-cid-sz7xmlte]{margin:0 0 var(--space-3);color:#fff6;font-size:.64rem;letter-spacing:.14em}.footer-nav[data-astro-cid-sz7xmlte] ul[data-astro-cid-sz7xmlte]{margin:0;padding:0;list-style:none}.footer-nav[data-astro-cid-sz7xmlte] li[data-astro-cid-sz7xmlte]+li[data-astro-cid-sz7xmlte]{margin-top:.35rem}.footer-nav[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{display:inline-flex;min-height:38px;align-items:center;color:#ffffffd1;font-size:.84rem;text-decoration:none;transition:color .16s ease,transform .16s ease}.footer-nav[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:#fff;transform:translate(3px)}.footer-sub[data-astro-cid-sz7xmlte]{display:flex;padding-block:var(--space-5);align-items:center;justify-content:center;border-top:1px solid rgba(255,255,255,.1)}.copyright[data-astro-cid-sz7xmlte]{color:#ffffff6b;font-size:.68rem;text-align:center}@media (min-width: 720px){.footer-shell[data-astro-cid-sz7xmlte]{grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);align-items:start}}@media (prefers-reduced-motion: reduce){.footer-nav[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{transition:none}}.skip-link[data-astro-cid-37fxchfa]{position:fixed;top:.75rem;left:.75rem;z-index:1000;padding:.65rem 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