:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--color-bg:#faf7f2;--color-surface:#fff;--color-fg:#1f1b18;--color-muted:#5b544d;--color-border:#e2dbd1;--color-accent:#b7282e;--color-accent-strong:#8f1d22;--color-accent-soft:#fbeceb;--color-on-accent:#fff;--color-focus:#1d4ed8;--color-ink:#2d2925;--font-sans:system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Noto Sans JP", sans-serif;--radius:12px;--radius-sm:8px;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-6:1.5rem;--space-8:2rem;--space-12:3rem;--space-16:4rem;--container:64rem;--tap:44px}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{background:var(--color-bg);color:var(--color-fg);font-family:var(--font-sans);overflow-wrap:anywhere;margin:0;font-size:1rem;line-height:1.8}h1,h2,h3{letter-spacing:.01em;margin:0 0 var(--space-4);line-height:1.35}h1{font-size:clamp(1.9rem,1.2rem + 3vw,3rem);font-weight:800}h2{font-size:clamp(1.4rem,1.1rem + 1.5vw,1.9rem);font-weight:700}h3{font-size:1.125rem;font-weight:700}p,ul,ol,dl{margin:0 0 var(--space-4)}a{color:var(--color-accent-strong);text-underline-offset:.15em}a:hover{color:var(--color-accent)}:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}svg{max-width:100%;height:auto}.section{padding-block:var(--space-16) var(--space-8);scroll-margin-top:var(--space-4)}.container{width:min(100% - 2 * var(--space-4), var(--container));margin-inline:auto}.lead{color:var(--color-muted);max-width:40rem;font-size:1.125rem}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-6)}.button{min-height:var(--tap);padding:var(--space-2) var(--space-6);border:2px solid var(--color-accent);background:var(--color-accent);color:var(--color-on-accent);font:inherit;cursor:pointer;border-radius:999px;justify-content:center;align-items:center;font-weight:700;text-decoration:none;display:inline-flex}.button:hover{background:var(--color-accent-strong);border-color:var(--color-accent-strong);color:var(--color-on-accent)}.button[disabled]{cursor:not-allowed;opacity:.5}.button--secondary{color:var(--color-accent-strong);background:0 0}.button--secondary:hover{background:var(--color-accent-soft);color:var(--color-accent-strong)}.checklist{padding:0;list-style:none}.checklist li{margin-bottom:var(--space-2);padding-left:1.75rem;position:relative}.checklist li:before{content:"✓";color:var(--color-accent);font-weight:700;position:absolute;top:0;left:0}.visually-hidden{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{top:var(--space-2);left:var(--space-2);z-index:10;padding:var(--space-2) var(--space-4);background:var(--color-surface);color:var(--color-fg);border:2px solid var(--color-focus);border-radius:var(--radius-sm);position:absolute;transform:translateY(-200%)}.skip-link:focus-visible{transform:none}