:root{--bg: #f6f7f9;--surface: #ffffff;--text: #1f2328;--muted: #656d76;--border: #d0d7de;--accent: #2563eb;--accent-soft: #eff4ff;--error-bg: #fdecec;--error-text: #b42318;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #0d1117;--surface: #161b22;--text: #e6edf3;--muted: #8d96a0;--border: #30363d;--accent: #4c8dff;--accent-soft: #1a2433;--error-bg: #3a1618;--error-text: #ff9b94}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.container{max-width:960px;margin:0 auto;padding:32px 16px 64px}header h1{margin:0 0 4px}header p{margin:0 0 24px;color:var(--muted)}.dropzone{border:2px dashed var(--border);border-radius:12px;background:var(--surface);padding:48px 16px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s;overflow-wrap:anywhere}.dropzone:hover,.dropzone.dragging{border-color:var(--accent);background:var(--accent-soft)}.dropzone small{color:var(--muted)}.actions{display:flex;gap:8px;margin:16px 0;flex-wrap:wrap}button{font:inherit;padding:8px 16px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.active{border-color:var(--accent);color:var(--accent)}.error{background:var(--error-bg);color:var(--error-text);padding:12px 16px;border-radius:8px}.result{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden}.toolbar{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;padding:12px;border-bottom:1px solid var(--border)}.tabs{display:flex;gap:8px;flex-wrap:wrap}.markdown,.raw,.empty{padding:16px 24px;margin:0}.raw{white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px}.empty{color:var(--muted)}.markdown{overflow-x:auto;line-height:1.6}.markdown table{border-collapse:collapse}.markdown th,.markdown td{border:1px solid var(--border);padding:4px 8px}.markdown pre{background:var(--bg);padding:12px;border-radius:8px;overflow-x:auto}