.fc-panel{--fc-bg: #FDF6E3;--fc-surface: rgba(0,0,0,.025);--fc-surface2: rgba(0,0,0,.05);--fc-border: rgba(0,0,0,.09);--fc-border-soft: rgba(0,0,0,.05);--fc-text: #111827;--fc-text-2: #4b5563;--fc-text-3: #6b7280;--fc-accent: #B58900;--fc-accent-light: rgba(181,137,0,.1);--fc-accent-ring: rgba(181,137,0,.22);--fc-radius: 12px;--fc-radius-sm: 8px;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;display:flex;flex-direction:column;height:100%;width:100%;background:var(--fc-bg);color:var(--fc-text);overflow:hidden}.fc-topbar{display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid var(--fc-border);background:var(--fc-bg);flex-shrink:0;min-height:52px}.fc-back-btn{display:flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--fc-radius-sm);border:1px solid var(--fc-border);background:var(--fc-surface);color:var(--fc-text-2);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;white-space:nowrap;font-family:inherit}.fc-back-btn:hover{background:var(--fc-surface2);color:var(--fc-text);border-color:var(--fc-accent)}.fc-back-btn svg{flex-shrink:0}.fc-topbar-title{font-size:15px;font-weight:700;flex:1;background:var(--fc-gradient, var(--fc-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.fc-topbar-badge{font-size:11px;font-weight:500;padding:3px 10px;border-radius:20px;background:var(--fc-accent-light);color:var(--fc-accent);border:1px solid var(--fc-accent-ring)}.fc-body{flex:1;display:flex;flex-direction:column;align-items:center;overflow-y:auto;padding:24px 20px 40px;gap:20px;max-width:720px;width:100%;margin:0 auto}.fc-dropzone{width:100%;border:2px dashed var(--fc-border);border-radius:var(--fc-radius);padding:48px 24px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--fc-surface);transition:all .2s;cursor:pointer;text-align:center;min-height:200px;position:relative}.fc-dropzone:hover{border-color:var(--fc-accent);background:var(--fc-accent-light)}.fc-dropzone--active{border-color:var(--fc-accent)!important;background:var(--fc-accent-light)!important;box-shadow:0 0 0 4px var(--fc-accent-ring)}.fc-dropzone--has-file{padding:20px 24px;min-height:auto;border-style:solid}.fc-drop-overlay{display:none;position:fixed;inset:0;z-index:9999;background:#b5890014;backdrop-filter:blur(2px);border:3px dashed var(--fc-accent);pointer-events:none;flex-direction:column;align-items:center;justify-content:center;gap:16px}.fc-drop-overlay.visible{display:flex;pointer-events:auto}.fc-drop-overlay__icon{color:var(--fc-accent);opacity:.7}.fc-drop-overlay__text{font-size:22px;font-weight:700;color:var(--fc-accent);text-shadow:0 1px 4px rgba(0,0,0,.06)}.fc-drop-overlay__hint{font-size:14px;color:var(--fc-text-2)}.fc-dropzone__icon{color:var(--fc-text-3);opacity:.6}.fc-dropzone__title{font-size:16px;font-weight:600;color:var(--fc-text-2)}.fc-dropzone__hint{font-size:13px;color:var(--fc-text-3)}.fc-dropzone__hint b{color:var(--fc-accent);font-weight:600;cursor:pointer}.fc-dropzone input[type=file]{display:none}.fc-file-card{display:flex;align-items:center;gap:14px;width:100%}.fc-file-card__icon{flex-shrink:0}.fc-file-card__info{flex:1;min-width:0}.fc-file-card__name{font-size:14px;font-weight:600;color:var(--fc-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.fc-file-card__meta{font-size:12px;color:var(--fc-text-3);margin-top:2px}.fc-file-card__remove{padding:6px;border:none;background:none;cursor:pointer;color:var(--fc-text-3);border-radius:6px;transition:all .15s;display:flex;align-items:center;justify-content:center}.fc-file-card__remove:hover{background:#ef44441a;color:#ef4444}.fc-target-section{width:100%;display:none}.fc-target-section.visible{display:block}.fc-target-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--fc-text-3);margin-bottom:10px}.fc-target-grid{display:flex;flex-wrap:wrap;gap:8px}.fc-target-btn{padding:10px 20px;border-radius:var(--fc-radius-sm);border:1px solid var(--fc-border);background:var(--fc-bg);color:var(--fc-text-2);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;font-family:inherit;display:flex;align-items:center;gap:8px}.fc-target-btn:hover{border-color:var(--fc-accent);color:var(--fc-accent);background:var(--fc-accent-light)}.fc-target-btn.active{background:var(--fc-accent);border-color:var(--fc-accent);color:#fff;box-shadow:0 2px 8px var(--fc-accent-ring)}.fc-convert-btn{padding:12px 40px;border-radius:var(--fc-radius-sm);border:none;background:var(--fc-accent);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:all .15s;font-family:inherit;box-shadow:0 2px 10px var(--fc-accent-ring);display:none;margin-top:4px}.fc-convert-btn.visible{display:inline-flex;align-items:center;gap:8px}.fc-convert-btn:hover{opacity:.9;transform:translateY(-1px)}.fc-convert-btn:active{transform:translateY(0)}.fc-convert-btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.fc-progress{display:none;width:100%}.fc-progress.visible{display:block}.fc-progress-bar{width:100%;height:6px;border-radius:3px;background:var(--fc-surface2);overflow:hidden}.fc-progress-fill{height:100%;border-radius:3px;background:var(--fc-accent);transition:width .3s ease;width:0%}.fc-progress-text{font-size:12px;color:var(--fc-text-3);margin-top:8px;text-align:center}.fc-result{display:none;width:100%}.fc-result.visible{display:block}.fc-result-card{border:1px solid var(--fc-border);border-radius:var(--fc-radius);overflow:hidden;background:var(--fc-bg);box-shadow:0 2px 12px #0000000f}.fc-result-header{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--fc-border-soft);background:var(--fc-surface)}.fc-result-header__icon{flex-shrink:0}.fc-result-header__info{flex:1}.fc-result-header__name{font-size:14px;font-weight:600;color:var(--fc-text)}.fc-result-header__meta{font-size:12px;color:var(--fc-text-3);margin-top:2px}.fc-result-preview{padding:16px 18px;max-height:280px;overflow-y:auto;font-size:13px;line-height:1.7;color:var(--fc-text-2);white-space:pre-wrap;font-family:SF Mono,Fira Code,monospace;background:var(--fc-bg)}.fc-result-preview::-webkit-scrollbar{width:4px}.fc-result-preview::-webkit-scrollbar-thumb{background:var(--fc-border);border-radius:2px}.fc-result-actions{display:flex;gap:10px;padding:14px 18px;border-top:1px solid var(--fc-border-soft);background:var(--fc-surface)}.fc-download-btn{flex:1;padding:10px 20px;border-radius:var(--fc-radius-sm);border:none;background:var(--fc-accent);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s;font-family:inherit;display:flex;align-items:center;justify-content:center;gap:8px}.fc-download-btn:hover{opacity:.9}.fc-newfile-btn{padding:10px 20px;border-radius:var(--fc-radius-sm);border:1px solid var(--fc-border);background:var(--fc-bg);color:var(--fc-text-2);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;font-family:inherit}.fc-newfile-btn:hover{border-color:var(--fc-accent);color:var(--fc-accent)}.fc-error{display:none;width:100%;padding:14px 18px;border-radius:var(--fc-radius-sm);border:1px solid rgba(239,68,68,.2);background:#ef44440f;color:#dc2626;font-size:13px;line-height:1.6}.fc-error.visible{display:block}.fc-formats-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;padding:8px 0;width:100%}.fc-format-tag{padding:4px 12px;border-radius:20px;font-size:11px;font-weight:600;border:1px solid var(--fc-border-soft);background:var(--fc-surface);color:var(--fc-text-3);letter-spacing:.03em;text-transform:uppercase}.fc-mode-toggle{display:flex;gap:2px;background:var(--fc-surface2);border-radius:8px;padding:2px;margin-left:auto}.fc-mode-btn{padding:5px 14px;border-radius:6px;border:none;font-size:12px;font-weight:500;cursor:pointer;background:transparent;color:var(--fc-text-3);transition:all .2s ease;white-space:nowrap;font-family:inherit}.fc-mode-btn.active{background:var(--fc-accent);color:#fff;box-shadow:0 1px 4px #0003}.fc-mode-btn:hover:not(.active){color:var(--fc-text);background:var(--fc-surface)}.fc-online-wrap{display:none;width:100%;padding:32px 24px 48px;box-sizing:border-box}.fc-online-wrap.visible{display:block}.fc-online-header{text-align:center;margin-bottom:28px}.fc-online-header img{height:40px;margin-bottom:12px}.fc-online-header h2{font-size:20px;font-weight:700;color:var(--fc-text);margin:0 0 6px}.fc-online-header p{font-size:13px;color:var(--fc-text-3);margin:0}.fc-online-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;max-width:720px;margin:0 auto}.fc-online-card{display:flex;flex-direction:column;align-items:center;padding:20px 12px;border-radius:12px;border:1px solid var(--fc-border);background:var(--fc-surface);cursor:pointer;transition:all .25s ease;text-decoration:none;font-family:inherit}.fc-online-card:hover{border-color:var(--fc-accent);transform:translateY(-2px);box-shadow:0 6px 20px #00000014}.fc-online-card__icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:10px;font-size:20px}.fc-online-card__title{font-size:13px;font-weight:600;color:var(--fc-text);text-align:center}.fc-online-card__desc{font-size:11px;color:var(--fc-text-3);margin-top:4px;text-align:center}.fc-online-hint{text-align:center;margin-top:24px;font-size:12px;color:var(--fc-text-3)}.fc-online-hint svg{vertical-align:middle;margin-right:4px}@media (max-width: 640px){.fc-body{padding:16px 12px 32px}.fc-dropzone{padding:32px 16px;min-height:160px}.fc-dropzone__title{font-size:14px}.fc-topbar{padding:10px 14px}.fc-topbar-title{font-size:14px}.fc-target-btn{padding:8px 14px;font-size:12px}.fc-convert-btn{padding:10px 32px;font-size:14px}.fc-result-preview{max-height:200px;font-size:12px}.fc-mode-btn{padding:4px 10px;font-size:11px}.fc-online-grid{grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px}.fc-online-wrap{padding:20px 14px 32px}.fc-online-card{padding:14px 8px}}