:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}body{margin:0}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#4f46e5;--primary-hover:#4338ca;--bg:#f8fafc;--card:#fff;--border:#e2e8f0;--text:#0f172a;--text-muted:#64748b;--radius:12px;--shadow:0 1px 3px #00000014, 0 4px 16px #0000000a}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6}.app{flex-direction:column;min-height:100vh;display:flex}.header{background:var(--primary);padding:20px 0}.header-inner{max-width:760px;margin:0 auto;padding:0 20px}.logo{color:#fff;font-size:22px;font-weight:700}.logo-sub{color:#ffffffb3;margin-top:2px;font-size:13px}.main{flex-direction:column;gap:20px;width:100%;max-width:760px;margin:0 auto;padding:24px 20px;display:flex}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.dropzone{border:2px dashed var(--border);text-align:center;cursor:pointer;border-radius:10px;margin-bottom:24px;padding:40px 20px;transition:all .2s}.dropzone:hover,.dropzone.dragging{border-color:var(--primary);background:#f0f0ff}.dropzone.has-file{border-color:var(--primary);background:#f5f3ff;border-style:solid}.upload-icon,.file-icon{margin-bottom:12px;font-size:40px}.upload-text{margin-bottom:6px;font-size:16px;font-weight:600}.upload-hint{color:var(--text-muted);font-size:13px}.file-name{color:var(--primary);margin-bottom:4px;font-size:15px;font-weight:600}.file-size{color:var(--text-muted);margin-bottom:12px;font-size:13px}.btn-change{border:1px solid var(--primary);color:var(--primary);cursor:pointer;background:0 0;border-radius:6px;padding:4px 12px;font-size:13px}.btn-change:hover{background:var(--primary);color:#fff}.section-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px;font-size:13px;font-weight:600}.format-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:20px;display:grid}.format-card{border:2px solid var(--border);cursor:pointer;border-radius:8px;padding:12px 14px;transition:all .15s}.format-card:hover{border-color:var(--primary)}.format-card.active{border-color:var(--primary);background:#f0f0ff}.format-label{margin-bottom:2px;font-size:14px;font-weight:600}.format-desc{color:var(--text-muted);font-size:12px}.error-msg{color:#dc2626;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;margin-bottom:16px;padding:10px 14px;font-size:14px}.btn-submit{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:8px;width:100%;padding:14px;font-size:15px;font-weight:600;transition:background .15s;display:flex}.btn-submit:hover:not(:disabled){background:var(--primary-hover)}.btn-submit:disabled{opacity:.5;cursor:not-allowed}.spinner-sm{border:2px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:16px;height:16px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.result-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;display:flex}.tabs{border:1px solid var(--border);border-radius:8px;gap:0;display:flex;overflow:hidden}.tab{cursor:pointer;color:var(--text-muted);background:#fff;border:none;padding:7px 16px;font-size:13px;font-weight:500;transition:all .15s}.tab.active{background:var(--primary);color:#fff}.result-actions{gap:8px;display:flex}.btn-icon{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:7px;padding:7px 12px;font-size:13px;transition:all .15s}.btn-icon:hover{background:var(--bg)}.result-body{background:#f8fafc;border-radius:8px;max-height:500px;padding:16px;overflow-y:auto}.result-body pre{white-space:pre-wrap;word-break:break-word;font-family:inherit;font-size:14px;line-height:1.8}.progress-bar-wrap{background:#e2e8f0;border-radius:2px;height:4px;margin-top:10px;overflow:hidden}.progress-bar{background:var(--primary);border-radius:2px;height:100%;transition:width .3s}@media (width<=520px){.format-grid{grid-template-columns:1fr}}