:root{--paper:#fbfaf6;--ink:#22272a;--muted:#5a564c;--faint:#8a8578;--line:#e9e5da;--chip:#d9d3c4;--accent:#5b4be0;--accent-dark:#3b2fc0;--hover-bg:#f6f3ea;--canvas:#f1eee5;--sans:"Noto Sans JP", sans-serif;--serif:"Shippori Mincho", "Noto Sans JP", serif;--grotesk:"Space Grotesk", sans-serif;--pad-x:64px}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;margin:0}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}h1,h2,h3{font-family:var(--serif);margin:0;font-weight:600}p{margin:0}.container{width:min(1440px,100%);margin:0 auto}.section{border-top:1px solid var(--line)}.section>.container{padding:96px var(--pad-x)}.eyebrow{align-items:center;gap:14px;display:flex}.eyebrow:before{content:"";background:var(--accent);width:36px;height:1px}.eyebrow span{font-family:var(--grotesk);letter-spacing:.22em;color:var(--accent);font-size:13px}.num-heading{align-items:baseline;gap:24px;display:flex}.num-heading .num{font-family:var(--grotesk);letter-spacing:.24em;color:var(--faint);font-size:13px}.num-heading h2{letter-spacing:.06em;font-size:36px}.num-heading .rule{background:var(--line);flex:1;align-self:center;height:1px}.btn{border:1px solid var(--ink);color:var(--ink);border-radius:999px;padding:16px 48px;font-size:15px;font-weight:500;transition:background .2s,color .2s;display:inline-block}.btn:hover{background:var(--ink);color:var(--paper)}.text-link{border-bottom:1px solid var(--ink);align-items:center;gap:12px;padding-bottom:6px;font-size:15px;font-weight:700;transition:color .2s,border-color .2s;display:inline-flex}.text-link .arrow{color:var(--accent)}.text-link:hover{color:var(--accent);border-bottom-color:var(--accent)}.page-intro h1{letter-spacing:.04em;margin-top:24px;font-size:52px;line-height:1.5}.page-intro .lede{color:var(--muted);text-wrap:pretty;max-width:640px;margin-top:24px;font-size:15px;line-height:2.1}.split{grid-template-columns:minmax(280px,400px) 1fr;gap:80px;display:grid}.dot-list .row{border-top:1px solid var(--line);align-items:baseline;gap:18px;padding:20px 0;font-size:15px;display:flex}.dot-list .row:last-child{border-bottom:1px solid var(--line)}.dot-list .row:before{content:"";background:var(--accent);flex:none;align-self:center;width:8px;height:8px}.prose p{color:var(--muted);text-wrap:pretty;margin:0 0 28px;font-size:15px;line-height:2.3}.prose h2{letter-spacing:.04em;margin:48px 0 24px;font-size:22px}.prose h3{letter-spacing:.04em;margin:32px 0 16px;font-size:17px}.prose ul{margin:0 0 28px;padding:0;list-style:none}.prose li{border-bottom:1px solid var(--line);color:var(--muted);align-items:baseline;gap:14px;padding:12px 0;font-size:15px;line-height:2;display:flex}.prose li:before{content:"";background:var(--accent);flex:none;align-self:center;width:8px;height:8px}.prose strong{color:var(--ink)}.prose a{color:var(--accent);border-bottom:1px solid var(--accent)}.prose a:hover{color:var(--accent-dark)}@media (width<=960px){:root{--pad-x:24px}.section>.container{padding:64px var(--pad-x)}.num-heading h2{font-size:28px}.page-intro h1{font-size:36px}.split{grid-template-columns:1fr;gap:40px}}header[data-astro-cid-nen7h5rs]{border-bottom:1px solid var(--line)}.inner[data-astro-cid-nen7h5rs]{padding:0 var(--pad-x);align-items:center;gap:36px;height:88px;display:flex}.logo[data-astro-cid-nen7h5rs] img[data-astro-cid-nen7h5rs]{width:auto;height:24px}nav[data-astro-cid-nen7h5rs]{gap:32px;margin-left:auto;font-size:14px;display:flex}nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs].active{border-bottom:2px solid var(--accent);padding-bottom:2px;font-weight:700}.right[data-astro-cid-nen7h5rs]{align-items:center;gap:20px;display:flex}.lang-switch[data-astro-cid-nen7h5rs]{align-items:center;gap:2px;font-size:13px;display:flex}.lang-switch[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{color:var(--faint);border-bottom:2px solid #0000;padding:4px 6px}.lang-switch[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs].on{color:var(--ink);border-bottom-color:var(--accent);font-weight:700}.lang-switch[data-astro-cid-nen7h5rs] .sep[data-astro-cid-nen7h5rs]{color:#c8c2b4}.btn-header[data-astro-cid-nen7h5rs]{padding:12px 26px;font-size:14px}@media (width<=960px){.inner[data-astro-cid-nen7h5rs]{flex-wrap:wrap;gap:16px 24px;height:auto;padding-top:16px;padding-bottom:16px}nav[data-astro-cid-nen7h5rs]{order:3;gap:20px;width:100%;margin-left:0}.right[data-astro-cid-nen7h5rs]{margin-left:auto}.btn-header[data-astro-cid-nen7h5rs]{padding:10px 20px}}.inner[data-astro-cid-jo6i4kqk]{padding:40px var(--pad-x);color:var(--faint);align-items:center;gap:28px;font-size:13px;display:flex}.inner[data-astro-cid-jo6i4kqk] img[data-astro-cid-jo6i4kqk]{width:auto;height:18px}.copy[data-astro-cid-jo6i4kqk]{margin-left:auto}@media (width<=640px){.inner[data-astro-cid-jo6i4kqk]{flex-wrap:wrap;gap:16px 24px}}