:root{--fg:#1d2433;--muted:#5d6779;--bg:#f6f8f7;--card:#fff;--line:#e1e6e3;--accent:#1f5fbf;--warn:#c77800;--bad:#c62828;--ok:#2e7d32;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--fg:#e8ebf2;--muted:#9aa3b5;--bg:#111613;--card:#1a201c;--line:#2b3530;--accent:#7fb0ff}}*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--fg);background:var(--bg)}a{color:var(--accent)}.wrap{max-width:1100px;margin:0 auto;padding:0 16px}.site-header{background:var(--card);border-bottom:1px solid var(--line)}.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;flex-wrap:wrap}.brand{font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--fg)}.site-header nav{display:flex;gap:14px;flex-wrap:wrap;font-size:.95rem}.site-header nav a{text-decoration:none;color:var(--muted)}h1{font-size:1.9rem;margin:20px 0 4px;line-height:1.2}.lede{color:var(--muted);margin:0 0 16px}.crumbs{font-size:.85rem;color:var(--muted);margin-top:14px}.muted{color:var(--muted)}.small{font-size:.85rem}.center{text-align:center;justify-content:center}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:16px}.row,.controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:8px 0}button,.btn,select,input,textarea{font:inherit;color:inherit}button,.btn{border:1px solid var(--line);background:var(--card);border-radius:8px;padding:7px 14px;cursor:pointer;text-decoration:none;display:inline-block}button:hover,.btn:hover{border-color:var(--accent)}button.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}button.big{font-size:1.1rem;padding:10px 22px}button:disabled{opacity:.5;cursor:not-allowed}select,input[type=number],input:not([type]),textarea{border:1px solid var(--line);border-radius:8px;padding:6px 8px;background:var(--bg)}input[type=number]{width:5em}textarea{width:100%;resize:vertical;display:block;margin-top:4px}label.file input{display:none}label.file{border:1px dashed var(--line);border-radius:8px;padding:7px 14px;cursor:pointer}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:700px){.grid2{grid-template-columns:1fr}}details summary{cursor:pointer;font-weight:600}.gen{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}@media(max-width:800px){.gen{grid-template-columns:1fr}}.field{display:flex;flex-direction:column;gap:2px;font-size:.9rem}.field input,.field select{width:100%}.fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px;margin:10px 0}input.data{width:100%;font-size:1.15rem;padding:8px 10px;font-family:ui-monospace,Menlo,monospace}.preview{background:#fff;border:1px solid var(--line);border-radius:10px;min-height:180px;display:flex;align-items:center;justify-content:center;padding:16px;overflow:auto}[hidden]{display:none!important}.preview svg{width:100%;max-width:440px;height:auto;max-height:340px}.status{font-weight:600;margin:8px 0}.status.ok{color:var(--ok)}.status.bad{color:var(--bad)}.status.wait{color:var(--muted)}.err{color:var(--bad);font-weight:600}.note{color:var(--muted);font-size:.9rem}.notice{border-left:4px solid var(--warn);background:color-mix(in srgb,var(--warn) 10%,var(--card));padding:10px 14px;border-radius:6px;margin:12px 0;font-size:.95rem}.downloads{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.result-big{font-size:1.6rem;font-family:ui-monospace,Menlo,monospace;font-weight:700}table.bulk{width:100%;border-collapse:collapse;font-size:.9rem}table.bulk td,table.bulk th{border-bottom:1px solid var(--line);padding:4px 6px;text-align:left}td.ok{color:var(--ok)}td.bad{color:var(--bad)}.sheet-preview{background:#fff;border:1px solid var(--line);border-radius:6px;padding:8px}.sheet-preview svg{width:100%;height:auto;max-height:640px}.pro-note{background:#fff6e0;color:#5b4300;border-radius:8px;padding:8px 12px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.prose{max-width:760px}.prose h2{margin-top:28px}.faq details{border-bottom:1px solid var(--line);padding:8px 0}.related{columns:2}.ad-slot{margin:20px 0;min-height:90px}.site-footer{border-top:1px solid var(--line);margin-top:40px;padding:20px 0;font-size:.9rem}.tool-links{display:flex;flex-wrap:wrap;gap:6px 16px}