:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--paper:#f7f4ed;--ink:#14233a;--muted:#5d6878;--accent:#9d4d3d}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--paper);min-height:100vh;color:var(--ink);margin:0;font-family:system-ui,-apple-system,Segoe UI,Noto Sans JP,sans-serif}.skip-link{position:absolute;left:-9999px}.skip-link:focus{top:1rem;left:1rem}.placeholder{text-align:center;place-content:center;gap:1rem;min-height:100vh;padding:2rem;display:grid}.placeholder__brand{color:var(--accent);letter-spacing:.18em;text-transform:uppercase;margin:0;font-size:.8rem;font-weight:700}.placeholder h1{margin:0;font-family:Yu Mincho,Hiragino Mincho ProN,serif;font-size:clamp(2rem,7vw,4rem);line-height:1.3}.placeholder p:last-child{color:var(--muted);margin:0}.message-page{place-content:center;min-height:100vh;padding:2rem;display:grid}.message-page__inner{max-width:40rem}.message-page__title{font-family:Yu Mincho,Hiragino Mincho ProN,serif}a,button{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}