:root{--bg: #f6f7f9;--card: #ffffff;--text: #1c2230;--muted: #6b7280;--border: #e2e5ea;--accent: #f38020;--accent-dark: #d96a12;--ok: #15803d;--ok-bg: #ecfdf3;--warn: #b45309;--warn-bg: #fffbeb;--err: #b91c1c;--err-bg: #fef2f2;--info: #1d4ed8;--info-bg: #eff6ff;--radius: 14px;--shadow: 0 10px 30px rgba(20, 30, 50, .08)}@media(prefers-color-scheme:dark){:root{--bg: #0f141c;--card: #171e29;--text: #e7eaf0;--muted: #9aa4b2;--border: #28303d;--ok: #4ade80;--ok-bg: #12251a;--warn: #fbbf24;--warn-bg: #251c0e;--err: #f87171;--err-bg: #2a1316;--info: #93c5fd;--info-bg: #10203a;--shadow: 0 10px 30px rgba(0, 0, 0, .35)}}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang TC,Microsoft JhengHei,Noto Sans TC,sans-serif;line-height:1.6}.app{max-width:860px;margin:0 auto;padding:40px 20px 60px}.header{text-align:center;margin-bottom:28px}.logo{font-size:30px;font-weight:800;letter-spacing:-.02em;background:linear-gradient(120deg,var(--accent),#ff9f43);-webkit-background-clip:text;background-clip:text;color:transparent}.tagline{color:var(--muted);margin:8px 0 0;font-size:15px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--card);cursor:pointer;transition:border-color .15s ease,background .15s ease,transform .1s ease;outline:none}.dropzone:hover,.dropzone:focus-visible{border-color:var(--accent)}.dropzone.dragover{border-color:var(--accent);background:var(--warn-bg);transform:scale(1.005)}.dropzone-inner{padding:48px 24px;text-align:center;pointer-events:none}.dropzone-icon{font-size:44px;line-height:1}.dropzone-title{font-size:17px;font-weight:600;margin:14px 0 4px}.dropzone-hint{color:var(--muted);font-size:13px;margin:0}.link{color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-top:18px}.hidden{display:none!important}.file-meta{display:flex;justify-content:space-between;gap:12px;align-items:baseline}.file-name{font-weight:600;word-break:break-all}.file-size{color:var(--muted);font-size:13px;white-space:nowrap}.status-row{display:flex;align-items:center;gap:10px;margin-top:12px;color:var(--muted);font-size:14px}.password-row{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}.password-label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}.password-controls{display:flex;gap:10px}.password-controls input{flex:1;min-width:0;padding:9px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font:inherit;font-size:14px}.password-controls input:focus{outline:2px solid var(--accent);outline-offset:1px}.password-error{margin:8px 0 0;color:var(--err);font-size:13px}.spinner{width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-card{border-color:var(--err);color:var(--err);background:var(--err-bg);font-size:14px;word-break:break-word}.result-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.badge{padding:4px 12px;border-radius:999px;font-size:13px;font-weight:700}.badge.text{background:var(--ok-bg);color:var(--ok)}.badge.ocr{background:var(--warn-bg);color:var(--warn)}.badge.mixed{background:var(--info-bg);color:var(--info)}.stats{color:var(--muted);font-size:13px}.warning{margin-top:14px;padding:10px 14px;border-radius:10px;background:var(--warn-bg);color:var(--warn);font-size:13px;border:1px solid color-mix(in srgb,var(--warn) 25%,transparent)}.tabs{display:flex;gap:6px;margin-top:18px;border-bottom:1px solid var(--border)}.tab{appearance:none;border:none;background:none;color:var(--muted);font:inherit;font-size:14px;font-weight:600;padding:8px 14px;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}.tab.active{color:var(--accent-dark);border-bottom-color:var(--accent)}.output{width:100%;min-height:320px;max-height:520px;margin-top:12px;padding:14px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.55;resize:vertical;white-space:pre;overflow:auto}.output:focus{outline:2px solid var(--accent);outline-offset:1px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.btn{appearance:none;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--text);font:inherit;font-size:14px;font-weight:600;padding:9px 16px;cursor:pointer;transition:background .12s ease,border-color .12s ease,opacity .12s ease}.btn:hover{border-color:var(--accent)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:var(--accent-dark)}.btn.ghost{margin-left:auto}.footer{margin-top:30px;text-align:center;color:var(--muted);font-size:12px}.footer a{color:var(--muted)}