:root{--color-primary:#18181b;--color-on-primary:#ffffff;--color-secondary:#71717a;--color-on-secondary:#fafafa;--color-accent:#18181b;--color-on-accent:#ffffff;--color-background:#ffffff;--color-foreground:#18181b;--color-card:#ffffff;--color-card-foreground:#18181b;--color-muted:#f4f4f5;--color-muted-foreground:#71717a;--color-border:#e4e4e7;--color-destructive:#dc2626;--color-on-destructive:#ffffff;--color-ring:#a1a1aa;--space-xs:0.25rem;--space-sm:0.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem;--text-h1:clamp(1.75rem,4.5vw,2.25rem);--text-h2:clamp(1.2rem,2.8vw,1.375rem);--text-h3:1.0625rem;--text-body:1rem;--text-small:0.875rem;--text-mono:0.85rem;--shadow-sm:0 1px 2px rgba(24,24,27,0.05);--shadow-md:0 4px 12px rgba(24,24,27,0.06),0 1px 3px rgba(24,24,27,0.04);--shadow-lg:0 12px 28px rgba(24,24,27,0.08),0 4px 8px rgba(24,24,27,0.04);--shadow-xl:0 20px 40px 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var(--transition),border-color var(--transition),color var(--transition),box-shadow var(--transition),transform var(--transition)}.btn:hover:not(:disabled){opacity:.88;box-shadow:var(--shadow-sm);transform:translateY(-1px)}.btn:active:not(:disabled){transform:translateY(0)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn.secondary{background:transparent;color:var(--color-foreground);border:1px solid var(--color-border)}.btn.secondary:hover:not(:disabled){background:var(--color-muted);opacity:1}.badge{display:inline-flex;align-items:center;padding:.2rem .65rem;border-radius:999px;font-size:var(--text-small);font-weight:500;line-height:1.4;background:var(--color-muted);color:var(--color-foreground);border:1px solid var(--color-border)}.textarea{width:100%;min-height:180px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:.85rem 1rem;resize:vertical;background:var(--card);color:var(--fg);font-size:16px;line-height:1.6;transition:border-color 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var(--transition)}.skip-link:focus,.skip-link:focus-visible{top:var(--space-sm);outline:2px solid var(--color-ring);outline-offset:2px}.empty-hint{margin:.35rem 0 .65rem;color:var(--muted);font-size:.9375rem}.site-header{position:sticky;top:0;z-index:50;padding:.5rem var(--space-md) 0;background:transparent;border-bottom:none;box-shadow:none}.site-header-inner{max-width:var(--max);margin:0 auto;padding:.65rem 1rem;display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);flex-wrap:wrap;border:1px solid transparent;border-radius:999px;background:color-mix(in srgb,var(--card) 72%,transparent);backdrop-filter:blur(12px) saturate(1.1);-webkit-backdrop-filter:blur(12px) saturate(1.1);transition:background var(--transition),border-color var(--transition),box-shadow var(--transition),max-width var(--transition),border-radius var(--transition)}.site-header.is-scrolled .site-header-inner{border-color:var(--color-border);background:color-mix(in srgb,var(--card) 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a:not(.btn):hover{opacity:.7}.prose a.btn{text-decoration:none;display:inline-flex}.skill-block{margin:.75rem 0 1rem;max-height:none}.card+.card{margin-top:var(--space-md)}.prose>h2{scroll-margin-top:5rem}.rewrite-result{margin-top:var(--space-lg);padding-top:var(--space-md);border-top:1px solid var(--border)}.rewrite-result h2{margin-top:0;border-bottom:none;padding-bottom:0}details summary{cursor:pointer;padding:.35rem 0;min-height:44px;display:flex;align-items:center;transition:color var(--transition)}details summary:hover{color:var(--fg)}.illustration-frame{margin:var(--space-lg) 0;padding:0;border:none}.illustration{display:block;width:100%;max-width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-muted);box-shadow:var(--shadow-sm)}.illustration-hero{max-width:560px;margin-left:auto;margin-right:auto}.illustration-compare{max-width:520px;margin-left:auto;margin-right:auto}.illustration-empty{max-width:320px;margin:.35rem 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