:root{--ink:#18181f;--ink-soft:#4a4a57;--muted:#7a7a88;--line:#e6e4ee;--bg:#fff;--bg-soft:#f6f5fb;--brand:#3b2fd1;--brand-deep:#241a99;--accent:#ff6b4a;--radius:14px;--max:760px;--wide:1080px;color:var(--ink);background:var(--bg);-webkit-text-size-adjust:100%;font-family:Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,Yu Gothic,Meiryo,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.85}a{color:var(--brand);text-underline-offset:3px}a:hover{color:var(--brand-deep)}img{max-width:100%;height:auto}.container{max-width:var(--wide);margin:0 auto;padding:0 20px}.narrow{max-width:var(--max);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:10;background:#ffffffeb;position:sticky;top:0}.site-header .container{justify-content:space-between;align-items:center;gap:16px;height:64px;display:flex}.logo{color:var(--ink);align-items:center;gap:10px;text-decoration:none;display:flex}.logo-mark{width:30px;height:30px}.logo-text{letter-spacing:.01em;font-size:21px;font-weight:800}.logo-sub{color:var(--muted);font-size:12px;font-weight:600}.nav{gap:18px;font-size:14px;font-weight:600;display:flex}.nav a{color:var(--ink-soft);text-decoration:none}.nav a:hover{color:var(--brand)}@media (width<=720px){.nav .hide-sm,.logo-sub{display:none}}.hero{background:radial-gradient(1200px 400px at 10% -20%,#e9e6ff 0%,#0000 60%),radial-gradient(900px 380px at 100% 0,#ffe9e3 0%,#0000 55%);padding:64px 0 48px}.hero h1{letter-spacing:.01em;margin:0 0 16px;font-size:clamp(28px,4.4vw,44px);line-height:1.35}.hero p{color:var(--ink-soft);max-width:640px;margin:0;font-size:17px}.hero .eyebrow{color:var(--brand);background:#fff;border:1px solid #dcd8ff;border-radius:999px;margin-bottom:18px;padding:4px 12px;font-size:13px;font-weight:700;display:inline-block}.section{padding:40px 0}.section-title{justify-content:space-between;align-items:baseline;gap:12px;margin:0 0 20px;font-size:22px;display:flex}.section-title a{font-size:14px;font-weight:600}.chips{flex-wrap:wrap;gap:10px;display:flex}.chip{background:var(--bg-soft);border:1px solid var(--line);color:var(--ink);border-radius:999px;padding:8px 14px;font-size:14px;font-weight:600;text-decoration:none;display:inline-block}.chip:hover{border-color:var(--brand);color:var(--brand)}.grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;display:grid}.card{border:1px solid var(--line);border-radius:var(--radius);color:var(--ink);background:#fff;padding:22px;text-decoration:none;transition:border-color .15s,transform .15s;display:block}.card:hover{color:var(--ink);border-color:#bdb6ff;transform:translateY(-2px)}.card .cat{color:var(--brand);font-size:12px;font-weight:700}.card h3{margin:6px 0 8px;font-size:17px;line-height:1.55}.card p{color:var(--ink-soft);margin:0 0 10px;font-size:14px;line-height:1.7}.card time{color:var(--muted);font-size:12px}.breadcrumbs{color:var(--muted);padding:18px 0 0;font-size:13px}.breadcrumbs ol{flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li+li:before{content:"›";color:#b5b5c0;margin-right:6px}.breadcrumbs a{color:var(--muted);text-decoration:none}.article-head{padding:18px 0 8px}.article-head .cat{color:var(--brand);font-size:13px;font-weight:700;text-decoration:none}.article-head h1{margin:8px 0 14px;font-size:clamp(25px,3.6vw,34px);line-height:1.45}.article-meta{color:var(--muted);flex-wrap:wrap;gap:14px;font-size:13px;display:flex}.prose{font-size:16.5px}.prose h2{border-bottom:2px solid var(--line);margin:52px 0 16px;padding-bottom:10px;font-size:23px;line-height:1.5}.prose h3{margin:34px 0 10px;font-size:19px}.prose p{margin:0 0 1.25em}.prose ul,.prose ol{margin:0 0 1.3em;padding-left:1.4em}.prose li{margin:.35em 0}.prose table{border-collapse:collapse;width:100%;margin:0 0 1.5em;font-size:14.5px;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);text-align:left;vertical-align:top;padding:10px 12px}.prose th{background:var(--bg-soft);white-space:nowrap}.prose td:first-child{min-width:6em}.prose blockquote{background:var(--bg-soft);border-left:4px solid var(--brand);color:var(--ink-soft);border-radius:0 10px 10px 0;margin:0 0 1.4em;padding:14px 18px}.prose blockquote p:last-child{margin:0}.prose code{background:var(--bg-soft);border-radius:6px;padding:2px 6px;font-size:.92em}.prose strong{background:linear-gradient(#0000 62%,#ffe2d9 62%)}.toc{background:var(--bg-soft);border-radius:var(--radius);margin:24px 0 8px;padding:18px 22px;font-size:14.5px}.toc p{margin:0 0 6px;font-weight:700}.toc ol{margin:0;padding-left:1.3em}.toc a{color:var(--ink-soft);text-decoration:none}.toc a:hover{color:var(--brand)}.sources{border-top:1px solid var(--line);color:var(--ink-soft);margin-top:48px;padding-top:18px;font-size:13.5px}.sources h2{border:0;margin:0 0 8px;padding:0;font-size:15px}.sources ul{margin:0;padding-left:1.2em}.related{margin-top:40px}.related h2{margin:0 0 14px;font-size:19px}.cta{color:#fff;background:linear-gradient(135deg,#241a99 0%,#3b2fd1 60%,#5b4ff0 100%);border-radius:18px;margin:48px 0 8px;padding:26px}.cta .cta-label{letter-spacing:.08em;opacity:.85;font-size:12px;font-weight:700}.cta h2{color:#fff;border:0;margin:6px 0 8px;padding:0;font-size:21px}.cta p{opacity:.92;margin:0 0 16px;font-size:15px}.cta a.btn{color:var(--brand-deep);background:#fff;border-radius:999px;padding:10px 18px;font-size:14px;font-weight:800;text-decoration:none;display:inline-block}.page-head{padding:40px 0 8px}.page-head h1{margin:0 0 10px;font-size:clamp(26px,3.6vw,34px)}.page-head p{color:var(--ink-soft);margin:0}.site-footer{color:#c9c7d6;background:#15131f;margin-top:72px;font-size:14px}.site-footer .container{grid-template-columns:2fr 1fr 1fr;gap:24px;padding:40px 20px;display:grid}.site-footer a{color:#e7e5f2;text-decoration:none}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li{margin:6px 0}.site-footer .fine{color:#8e8b9e;border-top:1px solid #2c2a38;grid-column:1/-1;margin:0;padding-top:18px;font-size:12px}@media (width<=720px){.site-footer .container{grid-template-columns:1fr}}.disclosure{color:var(--ink-soft);background:var(--bg-soft);border-radius:8px;margin:14px 0 0;padding:8px 12px;font-size:13px}.article-meta a{color:inherit}.article-thumb{margin:18px 0 0}.article-thumb img,.card-thumb img{border-radius:var(--radius);width:100%;height:auto;display:block}.card-thumb{margin:-6px -6px 12px}.emdash-image-media[data-astro-cid-6depetnu]{max-width:100%;height:auto}:where(:root.dark) .emdash-image--light,:where(:root.light) .emdash-image--dark{display:none}@media (prefers-color-scheme:dark){:where(:root:not(.light)) .emdash-image--light{display:none}}@media (prefers-color-scheme:light){:where(:root:not(.dark)) .emdash-image--dark{display:none}}.has-text-align-center[data-astro-cid-44ocxh3s]{text-align:center}.has-text-align-right[data-astro-cid-44ocxh3s]{text-align:right}.has-text-align-justify[data-astro-cid-44ocxh3s]{text-align:justify}.emdash-image[data-astro-cid-nzlefzml]{margin:1.5rem 0}.emdash-image[data-astro-cid-nzlefzml] img[data-astro-cid-nzlefzml]{max-width:100%;height:auto}.emdash-image[data-astro-cid-nzlefzml] figcaption[data-astro-cid-nzlefzml]{color:var(--emdash-caption-color,var(--color-muted,#666));text-align:center;margin-top:.5rem;font-size:.875rem}.emdash-image--align-left[data-astro-cid-nzlefzml],.emdash-image--align-right[data-astro-cid-nzlefzml]{width:fit-content;max-width:50%}.emdash-image--align-left[data-astro-cid-nzlefzml]{float:left;margin:0 1.5rem 1rem 0}.emdash-image--align-right[data-astro-cid-nzlefzml]{float:right;margin:0 0 1rem 1.5rem}.emdash-image--align-center[data-astro-cid-nzlefzml]{width:fit-content;margin-inline:auto}.emdash-image--align-wide[data-astro-cid-nzlefzml],.emdash-image--align-full[data-astro-cid-nzlefzml]{width:100%}@media (width<=640px){.emdash-image--align-left[data-astro-cid-nzlefzml],.emdash-image--align-right[data-astro-cid-nzlefzml]{float:none;width:100%;max-width:100%;margin-inline:0}}.emdash-code[data-astro-cid-dgremz56]{margin:1.5rem 0}.emdash-code-filename[data-astro-cid-dgremz56]{color:#ccc;background:#2d2d2d;border-radius:.5rem .5rem 0 0;padding:.5rem 1rem;font-family:monospace;font-size:.75rem}.emdash-code[data-astro-cid-dgremz56] pre[data-astro-cid-dgremz56]{background:#1e1e1e;border-radius:.5rem;margin:0;padding:1rem;overflow-x:auto}.emdash-code-filename[data-astro-cid-dgremz56]+pre[data-astro-cid-dgremz56]{border-radius:0 0 .5rem .5rem}.emdash-code[data-astro-cid-dgremz56] code[data-astro-cid-dgremz56]{color:#e0e0e0;font-family:Fira Code,Consolas,monospace;font-size:.875rem}.emdash-embed[data-astro-cid-n4v2ghzc]{margin:1.5rem 0}.emdash-embed-video[data-astro-cid-n4v2ghzc]{height:0;padding-bottom:56.25%;position:relative;overflow:hidden}.emdash-embed-video[data-astro-cid-n4v2ghzc] iframe[data-astro-cid-n4v2ghzc],.emdash-embed-video[data-astro-cid-n4v2ghzc] video[data-astro-cid-n4v2ghzc]{border:0;width:100%;height:100%;position:absolute;top:0;left:0}.emdash-embed-audio[data-astro-cid-n4v2ghzc],.emdash-embed-audio[data-astro-cid-n4v2ghzc] audio[data-astro-cid-n4v2ghzc]{width:100%}.emdash-embed[data-astro-cid-n4v2ghzc] figcaption[data-astro-cid-n4v2ghzc]{color:var(--emdash-caption-color,var(--color-muted,#666));text-align:center;margin-top:.5rem;font-size:.875rem}.emdash-gallery[data-astro-cid-d6nmylgu]{grid-template-columns:repeat(var(--columns,3), 1fr);gap:1rem;margin:1.5rem 0;display:grid}.emdash-gallery-item[data-astro-cid-d6nmylgu]{margin:0}.emdash-gallery-item[data-astro-cid-d6nmylgu] img[data-astro-cid-d6nmylgu]{object-fit:cover;aspect-ratio:1;width:100%;height:auto}.emdash-gallery-item[data-astro-cid-d6nmylgu] figcaption[data-astro-cid-d6nmylgu]{color:var(--emdash-caption-color,var(--color-muted,#666));text-align:center;margin-top:.25rem;font-size:.75rem}@media (width<=640px){.emdash-gallery[data-astro-cid-d6nmylgu]{grid-template-columns:repeat(2,1fr)}}.emdash-columns[data-astro-cid-sjaxkm7w]{gap:2rem;margin:1.5rem 0;display:flex}.emdash-column[data-astro-cid-sjaxkm7w]{flex:1;min-width:0}@media (width<=768px){.emdash-columns[data-astro-cid-sjaxkm7w]{flex-direction:column;gap:1rem}}.emdash-break[data-astro-cid-gvovdxls]{margin:2rem 0}.emdash-break-line[data-astro-cid-gvovdxls]{border:none;border-top:1px solid var(--emdash-break-color,var(--color-border,#e0e0e0))}.emdash-break-dots[data-astro-cid-gvovdxls]{text-align:center;color:var(--emdash-break-dots-color,var(--color-muted,#999));letter-spacing:.5em}.emdash-break-space[data-astro-cid-gvovdxls]{height:2rem}iframe[data-emdash-html-block]{border:0;width:100%;margin:1.5rem 0;display:block}.emdash-html-block[data-astro-cid-7hlqo6bn]{margin:1.5rem 0}.emdash-iframe[data-astro-cid-fhxykd76]{aspect-ratio:16/9;width:100%;margin:1.5rem 0}.emdash-iframe[data-astro-cid-fhxykd76] iframe{border:0;width:100%;height:100%;display:block}.emdash-video[data-astro-cid-ymu5gvpn]{margin:1.5rem 0}.emdash-video[data-astro-cid-ymu5gvpn] video[data-astro-cid-ymu5gvpn]{width:100%;height:auto;max-height:70vh;display:block}.emdash-video[data-astro-cid-ymu5gvpn] figcaption[data-astro-cid-ymu5gvpn]{color:var(--emdash-caption-color,var(--color-muted,#666));text-align:center;margin-top:.5rem;font-size:.875rem}.emdash-table-wrapper[data-astro-cid-7uypp5bz]{overscroll-behavior-inline:contain;max-inline-size:100%;margin-block:1.5rem;overflow-x:auto}.emdash-table[data-astro-cid-7uypp5bz]{border-collapse:collapse;inline-size:100%;font-size:.9rem}.emdash-table[data-astro-cid-7uypp5bz] th[data-astro-cid-7uypp5bz],.emdash-table[data-astro-cid-7uypp5bz] td[data-astro-cid-7uypp5bz]{border:1px solid var(--color-border,#ddd);text-align:start;vertical-align:top;padding:.75rem;position:relative}.emdash-table[data-astro-cid-7uypp5bz] th[data-astro-cid-7uypp5bz] p,.emdash-table[data-astro-cid-7uypp5bz] td[data-astro-cid-7uypp5bz] p{margin:0}.emdash-table[data-astro-cid-7uypp5bz] th[data-astro-cid-7uypp5bz]{background:var(--color-surface,#f5f5f5);font-weight:600}.emdash-table[data-astro-cid-7uypp5bz] tbody[data-astro-cid-7uypp5bz] tr[data-astro-cid-7uypp5bz]:nth-child(2n){background:var(--color-bg-subtle,#fafafa)}.emdash-table[data-astro-cid-7uypp5bz] tbody[data-astro-cid-7uypp5bz] tr[data-astro-cid-7uypp5bz]:hover{background:var(--color-surface,#f0f0f0)}.emdash-button[data-astro-cid-i644adhy]{cursor:pointer;border-radius:4px;padding:.75em 1.5em;font-weight:500;text-decoration:none;transition:background-color .2s,border-color .2s,color .2s;display:inline-block}.emdash-button--default[data-astro-cid-i644adhy],.emdash-button--fill[data-astro-cid-i644adhy]{background-color:var(--emdash-button-bg,#0073aa);color:var(--emdash-button-color,#fff);border:2px solid var(--emdash-button-bg,#0073aa)}.emdash-button--default[data-astro-cid-i644adhy]:hover,.emdash-button--fill[data-astro-cid-i644adhy]:hover{background-color:var(--emdash-button-bg-hover,#005177);border-color:var(--emdash-button-bg-hover,#005177)}.emdash-button--outline[data-astro-cid-i644adhy]{color:var(--emdash-button-bg,#0073aa);border:2px solid var(--emdash-button-bg,#0073aa);background-color:#0000}.emdash-button--outline[data-astro-cid-i644adhy]:hover{background-color:var(--emdash-button-bg,#0073aa);color:var(--emdash-button-color,#fff)}.emdash-buttons[data-astro-cid-pxkpowas]{flex-wrap:wrap;gap:.75rem;margin:1.5rem 0;display:flex}.emdash-buttons--vertical[data-astro-cid-pxkpowas]{flex-direction:column;align-items:flex-start}.emdash-buttons--horizontal[data-astro-cid-pxkpowas]{flex-direction:row;align-items:center}.emdash-cover[data-astro-cid-g6rigryn]{background-color:var(--emdash-cover-fallback-bg,#333);border-radius:4px;align-items:center;margin:1.5rem 0;padding:2rem;display:flex;position:relative;overflow:hidden}.emdash-cover__background[data-astro-cid-g6rigryn]{object-fit:cover;z-index:0;width:100%;height:100%;position:absolute;inset:0}.emdash-cover__video[data-astro-cid-g6rigryn]{object-fit:cover}.emdash-cover__overlay[data-astro-cid-g6rigryn]{z-index:1;position:absolute;inset:0}.emdash-cover__content[data-astro-cid-g6rigryn]{z-index:2;width:100%;color:var(--emdash-cover-text-color,#fff);position:relative}.emdash-cover--align-left[data-astro-cid-g6rigryn]{text-align:left;justify-content:flex-start}.emdash-cover--align-center[data-astro-cid-g6rigryn]{text-align:center;justify-content:center}.emdash-cover--align-right[data-astro-cid-g6rigryn]{text-align:right;justify-content:flex-end}.emdash-cover__content[data-astro-cid-g6rigryn] h1,.emdash-cover__content[data-astro-cid-g6rigryn] h2,.emdash-cover__content[data-astro-cid-g6rigryn] h3,.emdash-cover__content[data-astro-cid-g6rigryn] h4,.emdash-cover__content[data-astro-cid-g6rigryn] p{color:inherit}.emdash-file[data-astro-cid-dsnn5jk3]{background-color:var(--emdash-file-bg,#f5f5f5);border:1px solid var(--emdash-file-border,#e0e0e0);border-radius:4px;align-items:center;gap:.75rem;margin:1rem 0;padding:1rem;display:flex}.emdash-file__link[data-astro-cid-dsnn5jk3]{color:var(--emdash-file-color,#333);flex:1;align-items:center;gap:.5rem;text-decoration:none;display:flex}.emdash-file__link[data-astro-cid-dsnn5jk3]:hover{text-decoration:underline}.emdash-file__icon[data-astro-cid-dsnn5jk3]{width:1.5rem;height:1.5rem;color:var(--emdash-file-icon-color,#666);flex-shrink:0}.emdash-file__name[data-astro-cid-dsnn5jk3]{word-break:break-all;font-weight:500}.emdash-file__download[data-astro-cid-dsnn5jk3]{background-color:var(--emdash-button-bg,#0073aa);width:2.5rem;height:2.5rem;color:var(--emdash-button-color,#fff);border-radius:4px;justify-content:center;align-items:center;transition:background-color .2s;display:flex}.emdash-file__download[data-astro-cid-dsnn5jk3]:hover{background-color:var(--emdash-button-bg-hover,#005177)}.emdash-file__download[data-astro-cid-dsnn5jk3] svg[data-astro-cid-dsnn5jk3]{width:1.25rem;height:1.25rem}.emdash-pullquote[data-astro-cid-mtrxdgkr]{border-top:4px solid var(--emdash-pullquote-border,#0073aa);border-bottom:4px solid var(--emdash-pullquote-border,#0073aa);text-align:center;margin:2rem 0;padding:1.5rem 2rem}.emdash-pullquote__text[data-astro-cid-mtrxdgkr]{color:var(--emdash-pullquote-color,#333);margin:0;font-size:1.5rem;font-style:italic;line-height:1.4}.emdash-pullquote__citation[data-astro-cid-mtrxdgkr]{color:var(--emdash-pullquote-citation-color,#666);margin-top:1rem;font-size:.9rem;font-style:normal}