:root{color-scheme:light dark;--color-bg:#fff;--color-bg-warm:#f6f5f4;--color-surface:#fff;--color-hover:#37352f0f;--color-border:#37352f17;--color-border-strong:#37352f29;--color-text:#37352f;--color-heading:#1f1e1b;--color-body:#37352f;--color-muted:#37352fa6;--color-faint:#37352f73;--color-primary:#4f3bc9;--color-primary-dark:#3730a3;--color-link:#37352f;--color-link-line:#37352f66;--color-button:#4f3bc9;--color-button-hover:#3f2fb0;--color-button-text:#fff;--color-ghost:#37352f0f;--color-ghost-hover:#37352f1a;--bg-gray:#f1f1ef;--bg-brown:#f4eeee;--bg-orange:#fbecdd;--bg-yellow:#fbf3db;--bg-green:#edf3ec;--bg-blue:#e7f3f8;--bg-purple:#f4f0f7;--bg-pink:#f9eef3;--bg-red:#fdebec;--code-text:#eb5757;--shadow-mockup:0 0 0 1px #0f0f0f0d, 0 8px 24px #0f0f0f1a;--radius:12px;--radius-small:6px;--radius-button:8px;--container:1080px;--page:720px;--ease:.16s ease;color:var(--color-text);background:var(--color-bg);-webkit-text-size-adjust:100%;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,Meiryo,sans-serif;line-height:1.75}@media (prefers-color-scheme:dark){:root{--color-bg:#191919;--color-bg-warm:#202020;--color-surface:#252525;--color-hover:#ffffff0f;--color-border:#ffffff17;--color-border-strong:#ffffff29;--color-text:#ffffffcf;--color-heading:#ffffffeb;--color-body:#ffffffcf;--color-muted:#ffffff85;--color-faint:#ffffff61;--color-primary:#a99cff;--color-primary-dark:#c4baff;--color-link:#ffffffcf;--color-link-line:#ffffff59;--color-button:#5b47d6;--color-button-hover:#6a57e0;--color-ghost:#ffffff12;--color-ghost-hover:#ffffff1f;--bg-gray:#2f2f2f;--bg-brown:#4a3228;--bg-orange:#5c3b23;--bg-yellow:#564328;--bg-green:#243d30;--bg-blue:#143a4e;--bg-purple:#3c2d49;--bg-pink:#4e2c3c;--bg-red:#522e2a;--code-text:#ff7369;--shadow-mockup:0 0 0 1px #ffffff14, 0 8px 24px 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a[aria-current=page]{background:var(--color-ghost-hover);color:var(--color-heading)}.button{border-radius:var(--radius-button);text-align:center;transition:background var(--ease);padding:9px 16px;font-weight:600;line-height:1.4;text-decoration:none;display:inline-block}.button--primary,.button--light{background:var(--color-button);color:var(--color-button-text)}.button--primary:hover,.button--light:hover{background:var(--color-button-hover);color:var(--color-button-text)}.button--ghost{background:var(--color-ghost);color:var(--color-heading)}.button--ghost:hover{background:var(--color-ghost-hover);color:var(--color-heading)}.actions{flex-wrap:wrap;gap:10px;margin-top:28px;display:flex}.actions--center{justify-content:center}.hero{text-align:center;padding:72px 0 0}.hero__inner{flex-direction:column;align-items:center;display:flex}.hero__en{background:var(--bg-yellow);color:var(--color-text);border-radius:9999px;margin:0 0 16px;padding:2px 12px;font-size:.9rem;font-weight:600}.hero h1{letter-spacing:-.035em;max-width:820px;margin:0 0 20px;font-size:clamp(2.1rem,7vw,3.9rem);line-height:1.12}.hero__lead{max-width:640px}.hero__lead p{color:var(--color-muted);margin:0 0 10px;font-size:clamp(1rem,2.4vw,1.2rem)}.hero__shot{width:100%;max-width:980px;margin-top:48px}.shot{border-radius:var(--radius);box-shadow:var(--shadow-mockup);background:#fff;overflow:hidden}.section{padding:72px 0}.section--soft{background:var(--color-bg-warm)}.section h2{letter-spacing:-.03em;margin:0 0 28px;font-size:clamp(1.6rem,4.6vw,2.4rem);line-height:1.2}.page-head{padding:56px 0 8px}.page-icon{margin-bottom:16px;font-size:3.4rem;line-height:1;display:block}.page-head h1{letter-spacing:-.03em;margin:0 0 12px;font-size:clamp(1.9rem,6vw,2.6rem);line-height:1.2}.page-head p{color:var(--color-muted);margin:0;font-size:1.05rem}.points{gap:16px;margin:0;padding:0;list-style:none;display:grid}@media (width>=760px){.points{grid-template-columns:repeat(3,1fr)}}.points li{border-radius:var(--radius);background:var(--bg-yellow);padding:28px 24px}.points li:nth-child(3n+2){background:var(--bg-blue)}.points li:nth-child(3n){background:var(--bg-red)}.points__icon{margin-bottom:14px;font-size:2rem;line-height:1;display:block}.points h3{letter-spacing:-.01em;margin:0 0 8px;font-size:1.15rem}.points p{color:var(--color-text);margin:0}.feature-list,.article-list{border-top:1px solid var(--color-border);margin:0;padding:0;list-style:none}.feature-list li,.article-list li{border-bottom:1px solid var(--color-border)}.feature-list a,.article-list a{color:var(--color-text);transition:background var(--ease);align-items:flex-start;gap:14px;padding:16px 8px;text-decoration:none;display:flex}.feature-list a:hover,.article-list a:hover{background:var(--color-hover);color:var(--color-text)}.row-icon{flex:none;font-size:1.4rem;line-height:1.5}.row-text{min-width:0;display:block}.feature-list strong,.article-list 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0}.article-figure .shot{border-radius:var(--radius-small)}.page-head--illust,.points-head--illust{align-items:center;gap:16px;display:grid}.illustration{justify-self:center;width:100%;max-width:280px;height:auto}@media (width>=760px){.page-head--illust,.points-head--illust{grid-template-columns:1fr 260px}}.points-head{margin-bottom:28px}.points-head h2{margin:0}.site-footer{background:var(--color-bg-warm);margin-top:72px;padding:48px 0 36px}.site-footer a:not(.button){color:var(--color-text)}.site-footer__cta{border-bottom:1px solid var(--color-border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding-bottom:24px;display:flex}.site-footer__cta p{color:var(--color-heading);margin:0;font-weight:600}.site-footer__links{flex-wrap:wrap;gap:8px 24px;margin:24px 0 16px;padding:0;list-style:none;display:flex}.site-footer__note,.credit{color:var(--color-muted);margin:0;font-size:.8rem}.credit{margin-top:8px}.spotlight{border-radius:var(--radius);background:var(--bg-purple);padding:clamp(28px,6vw,56px)}.spotlight__icon{margin-bottom:14px;font-size:2.6rem;line-height:1;display:block}.spotlight__label{border-radius:var(--radius-small);background:var(--color-surface);margin:0 0 10px;padding:1px 10px;font-size:.85rem;font-weight:600;display:inline-block}.spotlight h2{margin-bottom:12px}.spotlight>p{max-width:640px;font-size:1.05rem}.spotlight__list{margin:16px 0 0;padding-left:1.3em}.spotlight__list li{margin:4px 0}