:root{--bg:#fffaf7;--ink:#2b2230;--accent:#d64560;--muted:#6b5f70;color:var(--ink);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{min-height:100vh;margin:0}.shell{max-width:900px;margin:0 auto;padding:48px 16px}h1{color:var(--accent);margin:0 0 8px;font-size:clamp(2rem,5vw,3.5rem)}.sub{color:var(--muted);margin:0 0 32px;font-size:1.25rem}.checks{padding:0;font-size:1.25rem;line-height:2;list-style:none}.checks li:before{content:"✓ ";color:var(--accent);font-weight:700}.a4{border-top:2px solid var(--muted);margin-top:40px;padding-top:24px}.a4 h2{margin:0 0 8px}.a4 button{border:2px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer;border-radius:8px;margin:0 12px 12px 0;padding:12px 20px;font-size:1.25rem}.a4 button.secondary{color:var(--accent);background:0 0}.a4 button:disabled{opacity:.5;cursor:default}.a4-result{color:#fff;border-radius:8px;margin:12px 0;padding:16px;font-size:clamp(1.4rem,4vw,2.2rem);font-weight:700}.a4-pass{background:#1b7f3b}.a4-fail{background:#b3261e}.a4-empty{background:#6b6b6b}.a4-error{color:#b3261e;border:2px solid #b3261e;border-radius:8px;margin:12px 0;padding:12px;font-size:1.15rem}.a4-facts{padding-left:20px;font-size:1.15rem;line-height:1.7}.a4-ua{color:var(--muted);word-break:break-word;font-size:.8rem}.a4-grid{grid-template-columns:repeat(auto-fill,minmax(90px,1fr));gap:6px;margin-top:16px;display:grid}.a4-grid img{aspect-ratio:1;object-fit:cover;border-radius:4px;width:100%}