:root{color-scheme:light;--bg:#f8fafc;--surface:#ffffff;--text:#0f172a;--muted:#64748b;--border:#e2e8f0;--primary:#2563eb;--primary-hover:#1d4ed8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}a:focus-visible,button:focus-visible{outline:3px solid #93c5fd;outline-offset:3px}.site-header{background:var(--surface);border-bottom:1px solid var(--border)}.header-inner{max-width:1080px;margin:auto;padding:20px 24px;justify-content:space-between}.brand,.header-inner{display:flex;align-items:center}.brand{gap:11px;font-size:22px;font-weight:750;letter-spacing:-.7px}.brand-icon{display:grid;place-items:center;width:39px;height:39px;border-radius:11px;background:var(--primary);color:white}.language-switch{display:flex;gap:4px;padding:4px;border-radius:10px;background:#f1f5f9}.language-switch 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#bfdbfe;border-radius:15px;background:#f8fbff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px;text-align:center}.upload-zone:hover{background:#eff6ff;border-color:var(--primary)}.upload-icon{width:58px;height:58px;display:grid;place-items:center;border-radius:15px;background:#dbeafe;color:var(--primary)}.upload-title{font-size:17px;font-weight:700}.upload-hint{color:var(--muted);font-size:13px}.file-section{margin-top:30px}.section-title{font-size:16px;font-weight:700;margin-bottom:15px}.file-list{display:grid;gap:10px}.file-item{display:flex;align-items:center;gap:12px;padding:13px;border:1px solid var(--border);border-radius:12px;background:#fff}.file-icon{flex-shrink:0;color:var(--primary)}.file-name{min-width:0;flex:1 1;overflow-wrap:anywhere;font-size:13px;font-weight:600}.file-actions{display:flex;gap:5px}.icon-button{width:35px;height:35px;border:1px solid var(--border);border-radius:8px;background:white;display:grid;place-items:center;color:#475569}.icon-button:hover:not(:disabled){background:#f1f5f9}.icon-button:disabled{opacity:.3}.icon-button.danger{color:#dc2626}.primary-button{width:100%;border:0;border-radius:11px;background:var(--primary);color:white;padding:16px 20px;font-weight:700;margin-top:22px}.primary-button:hover:not(:disabled){background:var(--primary-hover)}.primary-button:disabled{opacity:.5}.download-button{display:block;margin-top:14px;padding:16px;text-align:center;border-radius:11px;background:#059669;color:white;font-weight:700;text-decoration:none}.error-message{color:#dc2626;text-align:center;margin-top:16px}.privacy-note{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:26px}.privacy-note,.site-footer{color:var(--muted);font-size:13px;text-align:center}.site-footer{border-top:1px solid var(--border);background:white;padding:26px 20px}@media (max-width:600px){.header-inner{padding:15px 18px}.page-container{padding:42px 15px 60px}.tool-card{padding:16px;border-radius:16px}.upload-zone{min-height:205px}.file-item{flex-wrap:wrap}.file-actions{margin-left:auto}}.output-settings{margin-top:24px;margin-bottom:20px;padding:20px;border:1px solid #e2e8f0;border-radius:16px;background:#f8fafc}.output-settings h3{margin:0 0 18px;font-size:16px;font-weight:700;color:#0f172a}.output-settings>label{display:block;margin-bottom:8px;font-size:14px;font-weight:600;color:#334155}.filename-field{display:flex;align-items:center;overflow:hidden;border:1px solid #cbd5e1;border-radius:10px;background:white}.filename-field:focus-within{border-color:#2563eb;box-shadow:0 0 0 3px rgba(37,99,235,.1)}.filename-field input{flex:1 1;min-width:0;width:100%;padding:13px;border:0;outline:none;background:transparent;color:#0f172a;font-size:16px}.filename-field>span{padding:13px;color:#64748b;background:#f1f5f9;font-size:14px;font-weight:600}.field-hint{margin:8px 0 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