:root{
--ink-950:#171a2f;--ink-800:#282d49;--ink-700:#3c425f;--ink-500:#68708b;--ink-300:#a9afbf;
--primary:#735967;--primary-strong:#5f4655;--accent:#bc7155;--teal:#2f756e;--success:#276454;--danger:#a6404d;
--surface:#f4f3f5;--surface-soft:#f8f7f8;--surface-warm:#fcf8f5;--white:#fff;--line:#dde0e8;--line-strong:#c7ccd8;
--shadow-sm:0 5px 18px rgba(24,28,48,.06);--shadow-md:0 18px 44px rgba(24,28,48,.10);
--radius-sm:.18rem;--radius-md:.22rem;--radius-lg:.28rem;--container:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink-950);background:var(--surface-soft);font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.container{width:min(calc(100% - 36px),var(--container));margin-inline:auto}.skip-link{position:fixed;left:12px;top:-70px;z-index:9999;padding:10px 14px;color:#fff;background:var(--ink-950)}.skip-link:focus{top:12px}.noscript-notice{padding:14px;text-align:center;color:#fff;background:var(--danger)}h1,h2,h3{margin:0;line-height:1.36;letter-spacing:-.025em}h1{font-size:clamp(2rem,4.7vw,4.25rem)}h2{font-size:clamp(1.45rem,2.8vw,2.25rem)}h3{font-size:1.05rem}p{margin:0}.eyebrow{color:var(--accent);font-size:.78rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}.lead{color:var(--ink-700);font-size:clamp(1rem,1.9vw,1.17rem)}.muted{color:var(--ink-500)}.site-main{overflow:hidden}.section{padding:82px 0}.section-soft{background:var(--surface)}.section-white{background:#fff}.section-heading{max-width:760px;margin-bottom:34px}.section-heading .eyebrow{margin-bottom:8px}.section-heading h2{margin-bottom:12px}.section-heading p{color:var(--ink-500)}.prose{max-width:850px}.prose h2{margin:2.2rem 0 .8rem}.prose h3{margin:1.55rem 0 .55rem}.prose p,.prose ul{margin:.7rem 0;color:var(--ink-700)}.prose ul{padding-left:1.25rem}.prose a{color:var(--primary-strong);text-decoration:underline;text-underline-offset:3px}.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;padding:18px 0;color:var(--ink-500);font-size:.76rem}.breadcrumb span::before{content:"/";margin-right:8px}.page-hero{padding:58px 0 54px;background:linear-gradient(135deg,#f2eef0 0%,#f9f7f5 60%,#f3ece8 100%);border-bottom:1px solid var(--line)}.page-hero p{max-width:760px;margin-top:14px;color:var(--ink-700)}.tag{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border:1px solid var(--line-strong);background:#fff;color:var(--ink-700);font-size:.72rem;font-weight:800}.tag-dot{width:7px;height:7px;background:var(--teal);border-radius:50%}