:root{--sumi:#1b1815;--sumi-deep:#131110;--washi:#ede6d6;--washi-dim:#aaa498;--kincha:#c8a46a;--kincha-deep:#8a6e42;--kincha-ink:#6b5330;--surface:#262220;--edge:#3a342e;--measure:38rem;--gap:1rem;--section-gap:clamp(4rem, 9vw, 7rem);--radius:4px;--rail:3.5rem;--font:system-ui, -apple-system, "Segoe UI", "Yu Gothic UI", "Hiragino Sans", Meiryo, sans-serif;--mono:ui-monospace, "Cascadia Mono", "Consolas", monospace}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--sumi);color:var(--washi);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:clamp(1rem,.95rem + .2vw,1.0625rem);line-height:1.95}h1,h2,h3{text-wrap:balance;line-break:strict;margin:0;font-weight:700;line-height:1.35}h1{letter-spacing:-.03em;word-break:auto-phrase;font-size:clamp(1.9rem,1.4rem + 2.2vw,2.9rem);line-height:1.28}h2{letter-spacing:-.02em;font-size:clamp(1.5rem,1.25rem + 1.1vw,2.05rem)}h3{letter-spacing:-.01em;font-size:1.0625rem;line-height:1.6}p{max-width:var(--measure);text-wrap:pretty;line-break:strict;margin:0}a{color:inherit}ul,ol{margin:0}.wrap{width:100%;max-width:64rem;margin-inline:auto;padding-inline:clamp(1.25rem,4vw,2.5rem)}.section{padding-block:var(--section-gap);border-top:1px solid var(--edge);scroll-margin-top:5.5rem}.section__grid{gap:calc(var(--gap) * 1.5);grid-template-columns:minmax(0,1fr);display:grid}.section__body>*+*{margin-top:calc(var(--gap) * 1.5)}@media (width>=60rem){.section__grid{grid-template-columns:var(--rail) minmax(0, 1fr);gap:0}}.marker{color:var(--kincha);letter-spacing:.22em;margin:0;font-size:.8125rem;font-weight:600;line-height:1}@media (width>=60rem){.marker{writing-mode:vertical-rl;text-orientation:mixed;place-self:start;width:fit-content;height:fit-content;margin-top:.4rem}}.lead{color:var(--washi-dim);font-size:1.0625em}.cards{gap:var(--gap);grid-template-columns:repeat(auto-fit,minmax(min(18rem,100%),1fr));padding:0;list-style:none;display:grid}.card{background:var(--surface);border:1px solid var(--edge);border-radius:var(--radius);padding:calc(var(--gap) * 1.25)}.card h3{margin-bottom:.4rem}.card p{color:var(--washi-dim);max-width:none;font-size:.9375rem}.btn{border-radius:var(--radius);border:1px solid var(--edge);align-items:center;gap:.5rem;padding:.7rem 1.5rem;font-weight:600;line-height:1.4;text-decoration:none;display:inline-flex}.btn--primary{background:var(--kincha);border-color:var(--kincha);color:var(--sumi-deep)}.btn--ghost{color:var(--washi-dim);background:0 0}.btn--ghost:hover{color:var(--washi);border-color:var(--washi-dim)}.logo{letter-spacing:-.01em;align-items:center;gap:.6rem;font-weight:700;text-decoration:none;display:inline-flex}.logo svg{width:2rem;height:2rem;display:block}:where(a,button,input,[tabindex]):focus-visible{outline:2px solid var(--kincha);outline-offset:3px;border-radius:2px}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}