:root{--ink:#1d2321;--muted:#5b6661;--line:#d9ded9;--bg:#f6f7f4;--card:#fff;--accent:#2f7d32;--warn:#b3261e;--weak:#8a6100}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:980px;margin:0 auto;padding:24px 16px 48px}h1{font-size:1.9rem;line-height:1.2;margin:.2em 0 .4em}h2{font-size:1.25rem;margin:0 0 .6em}h3{font-size:1.05rem;margin:1.4em 0 .5em}
.lead{font-size:1.05rem}.hint{color:var(--muted);font-size:.92rem}.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin:16px 0}
.grid{display:grid;gap:12px}.grid.three{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}label{display:flex;flex-direction:column;gap:4px;font-weight:600;font-size:.93rem}label.inl{flex-direction:row;align-items:center;gap:8px;flex-wrap:wrap}label.wide{margin-top:8px}
input,select,textarea{font:inherit;font-weight:400;padding:8px 10px;border:1px solid #b9c1bb;border-radius:6px;background:#fff;width:100%}label.inl input{width:auto}textarea{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.88rem}
.btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:6px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}.btn.ghost{background:#fff;color:var(--accent);border:1px solid var(--accent)}.link{background:none;border:0;color:var(--accent);text-decoration:underline;cursor:pointer;font:inherit;padding:0 4px}
.result{border:2px solid var(--accent)}.issues{padding-left:1.3em}.issues li{margin:.45em 0}.issues li.breaks strong{color:var(--warn)}.issues li.weak strong{color:var(--weak)}code{background:#eef1ee;padding:1px 5px;border-radius:4px;font-size:.88em}.src{display:block;color:var(--muted);font-size:.82rem}
.upsell{background:#f1f7f0;border-radius:8px;padding:12px 14px;margin-top:14px}.pro{border-color:#9bc59d}.steps li{margin:.5em 0}.steps pre{white-space:pre-wrap;background:#f4f5f2;padding:10px;border-radius:6px;font-size:.82rem}
.diff li.add strong{color:var(--accent)}.diff li.chg strong{color:var(--weak)}.diff li.rm strong{color:var(--muted)}canvas{image-rendering:pixelated;border:1px solid var(--line);vertical-align:middle;background:repeating-conic-gradient(#eee 0 25%,#fff 0 50%) 0 0/16px 16px}
.scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.9rem}th,td{border-bottom:1px solid var(--line);padding:6px 8px;text-align:left;white-space:nowrap}.foot{color:var(--muted);font-size:.85rem}