:root{--background:#f7f4ed;--panel:#fffdf8;--text:#171513;--muted:#68615a;--border:#ddd6ca;--border-strong:#bdb4a7;--orange:#f48120;--orange-hover:#ff963e;--checker:#5c4f4114;--success:#237447;--error:#9f2828;--error-bg:#fff0ed;--error-border:#efb6ad;--shadow:0 16px 50px #392d1e14;color:var(--text);background:var(--background);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at 85% 8%, #f4812024, transparent 25rem), var(--background);min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}@media (prefers-color-scheme:dark){:root{--background:#141311;--panel:#1c1a17;--text:#f5f0e8;--muted:#afa79c;--border:#35312b;--border-strong:#575047;--checker:#ffffff0b;--success:#71d29a;--error:#ffaaa1;--error-bg:#351b19;--error-border:#713b35;--shadow:0 16px 50px #0003}}.app-shell{width:min(1120px,100% - 40px);margin:0 auto;padding:72px 0 40px}.intro{max-width:760px;margin-bottom:36px}.eyebrow{color:var(--orange);letter-spacing:.13em;text-transform:uppercase;margin:0 0 12px;font-size:.78rem;font-weight:800}h1{letter-spacing:-.055em;max-width:700px;margin:0 0 18px;font-size:clamp(2.5rem,7vw,5.3rem);line-height:.98}.intro>p:last-child{max-width:680px;color:var(--muted);font-size:1.06rem}.upload-card{border:1px solid var(--border);background:var(--panel);box-shadow:var(--shadow);border-radius:18px;align-items:center;gap:16px;padding:18px;display:flex}.file-picker{cursor:pointer;border:1px solid var(--border-strong);background:var(--background);color:var(--text);border-radius:10px;flex-shrink:0;font-weight:700;display:inline-flex;position:relative;overflow:hidden}.file-picker span{padding:11px 16px}.file-picker input{opacity:0;width:1px;height:1px;position:absolute}.file-picker:focus-within{outline:3px solid color-mix(in srgb, var(--orange) 35%, transparent);outline-offset:2px}.hint{color:var(--muted);flex:1;margin:0;font-size:.9rem}button{background:var(--orange);color:#17100c;font:inherit;cursor:pointer;border:0;border-radius:10px;padding:12px 18px;font-weight:800}button:hover:not(:disabled){background:var(--orange-hover)}button:focus-visible{outline:3px solid color-mix(in srgb, var(--orange) 35%, transparent);outline-offset:2px}button:disabled{cursor:not-allowed;opacity:.55}.file-picker:has(input:disabled){cursor:not-allowed;opacity:.55}.error{border:1px solid var(--error-border);background:var(--error-bg);color:var(--error);border-radius:10px;margin:18px 0 0;padding:13px 16px}.results{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px;display:grid}.preview-card{border:1px solid var(--border);background:var(--panel);box-shadow:var(--shadow);border-radius:18px;overflow:hidden}.image-frame{background:linear-gradient(45deg, var(--checker) 25%, transparent 25%), linear-gradient(-45deg, var(--checker) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, var(--checker) 75%), linear-gradient(-45deg, transparent 75%, var(--checker) 75%);background-position:0 0,0 8px,8px -8px,-8px 0;background-size:16px 16px;place-items:center;min-height:350px;padding:16px;display:grid}.image-frame img{object-fit:contain;width:100%;height:350px;display:block}.converted-frame p{color:var(--muted)}.preview-details{border-top:1px solid var(--border);padding:18px 20px 20px}.preview-details h2{margin:0 0 5px;font-size:1rem}.preview-details p{color:var(--muted);margin:0;font-size:.9rem}.preview-details strong{color:var(--success)}footer{color:var(--muted);text-align:center;margin-top:32px;font-size:.85rem}code{border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:5px;padding:3px 6px}@media (width<=720px){.app-shell{width:min(100% - 24px,1120px);padding-top:40px}.upload-card{flex-direction:column;align-items:stretch}.file-picker{justify-content:center}.results{grid-template-columns:1fr}.image-frame,.image-frame img{height:250px;min-height:250px}}