:root{--bg:#f3f2f8;--panel:#fff;--ink:#28242f;--muted:#837c90;--accent:#0ca678;--accent-dark:#087f5b;--line:#d9efe8;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--safe-x:env(safe-area-inset-left,0px)}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);margin:0;font-family:system-ui,-apple-system,PingFang SC,Segoe UI,sans-serif;overflow-x:hidden}#app-root{flex-direction:column;min-height:100dvh;display:flex}header{padding:14px 22px;padding-top:max(14px, var(--safe-top));background:var(--panel);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;display:flex}.brand{min-width:0}.brand h1{color:var(--accent);margin:0;font-size:20px;display:inline}.tagline{color:var(--muted);margin-left:12px;font-size:12.5px}.actions{flex-shrink:0;align-items:center;gap:10px;display:flex}.lang-select{border:1px solid var(--line);background:var(--panel);cursor:pointer;border-radius:10px;align-items:center;gap:4px;padding:6px 10px;font-size:13px;display:inline-flex}.lang-select:hover{border-color:var(--accent)}.lang-select .lang-globe{font-size:14px;line-height:1}.lang-select select{color:var(--ink);font:inherit;cursor:pointer;background:0 0;border:none;outline:none;padding:0 2px}.lang-select select:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.btn{border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer;white-space:nowrap;border-radius:10px;padding:8px 16px;font-size:13.5px}.btn:hover{border-color:var(--accent);color:var(--accent)}.btn:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{color:#fff;filter:brightness(1.08)}.btn-primary:disabled{opacity:.5;cursor:default;filter:none}.params{background:var(--panel);border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:flex-start;gap:12px 26px;padding:14px 22px;display:flex}.param{color:var(--muted);flex-direction:column;gap:4px;font-size:12px;display:flex}.param b{color:var(--ink)}.param input[type=range]{width:150px;accent-color:var(--accent)}.param select{font:inherit;color:var(--ink);background:var(--panel);border:1px solid var(--line);cursor:pointer;border-radius:8px;outline:none;padding:6px 8px;font-size:12.5px}.param select:focus-visible{border-color:var(--accent);outline:2px solid var(--accent);outline-offset:1px}.param-content{flex:100%}.param-content textarea{font:inherit;color:var(--ink);background:var(--panel);border:1px solid var(--line);resize:vertical;border-radius:10px;outline:none;width:100%;min-width:0;padding:10px 12px;font-size:14px}.param-content textarea:focus{border-color:var(--accent)}.param-color input[type=color]{border:1px solid var(--line);background:var(--panel);cursor:pointer;border-radius:8px;width:48px;height:32px;padding:0}.param-color input[type=color]::-webkit-color-swatch-wrapper{padding:3px}.param-color input[type=color]::-webkit-color-swatch{border:none;border-radius:5px}main{flex:1;grid-template-columns:1fr 1fr;align-items:start;gap:18px;width:100%;max-width:1200px;margin:0 auto;padding:22px;display:grid}.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;width:100%;padding:18px}.panel h2{margin:0 0 14px;font-size:14px}.panel h2 em{color:var(--accent);font-style:normal;font-weight:600}.qr-wrap{border:1px solid var(--line);background:conic-gradient(#e3f7f0 25%, #f6fdfb 0 50%, #e3f7f0 0 75%, #f6fdfb 0) 0 0 / 18px 18px;border-radius:10px;justify-content:center;align-items:center;min-height:240px;padding:18px;display:flex}.qr-wrap img{width:auto;max-width:100%;height:auto;max-height:360px;display:block}.qr-wrap.is-empty{background:var(--panel)}.qr-empty{color:var(--muted);text-align:center;padding:40px 16px;font-size:13px}.meta{color:var(--muted);text-align:center;margin:12px 0 0;font-size:12.5px}.preset-row{align-items:center;gap:10px;margin-top:14px;display:flex}.preset-label{color:var(--muted);flex-shrink:0;font-size:12px}.presets{flex-wrap:wrap;gap:6px;display:flex}.preset-btn{border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer;border-radius:6px;padding:5px 10px;font-size:12px}.preset-btn:hover{border-color:var(--accent);color:var(--accent)}.result-actions{gap:10px;margin-top:14px;display:flex}.btn-download{cursor:pointer;color:var(--ink);background:#e6f7f2;border:none;border-radius:8px;flex:1;padding:9px 0;font-size:12.5px}.btn-download:hover:not(:disabled){background:var(--accent);color:#fff}.btn-download:disabled{opacity:.5;cursor:default}.camera-wrap{border:1px solid var(--line);aspect-ratio:1;background:#000;border-radius:10px;justify-content:center;align-items:center;margin-bottom:14px;display:flex;overflow:hidden}.camera-wrap video{object-fit:cover;width:100%;height:100%;display:block}.decode-dropzone{border:2px dashed var(--line);cursor:pointer;text-align:center;background:#f6fdfb;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;min-height:240px;margin-bottom:14px;padding:24px;transition:border-color .15s,background .15s;display:flex;position:relative}.decode-dropzone:hover,.decode-dropzone:focus-visible{border-color:var(--accent);background:#eafaf4;outline:none}.decode-preview{border-radius:6px;max-width:100%;max-height:220px;margin-bottom:12px;display:block}.dropzone-empty{color:var(--muted);padding:24px 16px;font-size:13px;line-height:1.6}.dropzone-hint{color:var(--muted);margin:8px 0 0;font-size:12.5px}.dropzone-link{color:var(--accent);font-weight:600;text-decoration:none}.dropzone-link:hover{text-decoration:underline}.decode-actions{gap:10px;margin-bottom:14px;display:flex}.decode-result{border:1px solid var(--line);background:#eafaf4;border-radius:10px;padding:14px}.result-label{color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;font-size:11.5px;font-weight:600}.result-text{color:var(--ink);word-break:break-all;white-space:pre-wrap;margin-bottom:12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;line-height:1.5}.error-text{color:#d9534f;text-align:center;margin-top:10px;font-size:12.5px}@media (width<=980px){main{grid-template-columns:1fr}}@media (width<=640px){header{padding:12px 14px;padding-top:max(12px, var(--safe-top));flex-wrap:wrap;gap:10px}.brand{flex:100%}.brand h1{font-size:18px}.tagline{display:none}.actions{flex:100%;gap:8px}.actions .btn{flex:1 1 0;min-width:0}.actions .lang-select{flex:none}.btn{padding:9px 10px;font-size:13px}.lang-select{padding:8px 10px}.params{grid-template-columns:repeat(2,1fr);gap:12px 14px;padding:12px 14px;display:grid}.param-content{grid-column:1/-1}.param input[type=range]{width:100%}main{padding:12px 14px;padding-bottom:max(12px, var(--safe-bottom))}.panel{border-radius:12px;padding:14px}.panel h2{font-size:13.5px}.preset-btn{padding:7px 12px}.btn-download{padding:10px 0;font-size:12px}}@media (width<=380px){.params{grid-template-columns:1fr}.actions .btn{white-space:normal}}@media (width<=980px) and (orientation:landscape) and (height<=500px){header{padding-top:6px;padding-bottom:6px}.panel{padding:12px}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}