:root{
      color-scheme:light;
      --bg:#f4f6f7;--surface:#ffffff;--surface-2:#edf1f2;--ink:#142025;--muted:#5d6b70;
      --line:#d8e0e2;--accent:#087f5b;--accent-2:#066a4c;--accent-soft:#dff4ec;--warning:#9a5b05;
      --danger:#b43a3a;--shadow:0 18px 48px rgba(30,52,58,.09);--radius:18px;
    }
    
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,"Microsoft YaHei",sans-serif;min-height:100vh}
    button,input,select{font:inherit}button{cursor:pointer}.wrap{width:min(1180px,calc(100% - 40px));margin:0 auto;padding:52px 0 72px}
    .hero{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:end;margin-bottom:30px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:13px;font-weight:700;margin-bottom:13px}
    .eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 5px var(--accent-soft)}
    h1{font-size:clamp(34px,5.2vw,64px);letter-spacing:-.05em;line-height:1.06;margin:0;max-width:760px;font-weight:700}
    .hero p{margin:0;color:var(--muted);font-size:15px;line-height:1.85;max-width:430px}
    .dropzone{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow);min-height:228px;display:grid;place-items:center;text-align:center;padding:34px;transition:.2s ease;overflow:hidden}
    .dropzone:before{content:"";position:absolute;inset:12px;border:1.5px dashed var(--line);border-radius:18px;pointer-events:none}.dropzone.drag{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-2px)}
    .dropzone input{display:none}.dropzone label{position:absolute;inset:0;display:grid;place-items:center;cursor:pointer;z-index:1;padding:28px}.upload-mark{width:58px;height:58px;border-radius:50%;background:var(--accent-soft);display:grid;place-items:center;color:var(--accent);margin:0 auto 14px}.upload-mark svg{width:27px}
    .dropzone strong{display:block;font-size:19px;margin-bottom:6px}.dropzone span{display:block;color:var(--muted);font-size:13px}.dropzone .choose{display:inline-block;color:var(--accent);font-weight:700;margin-top:14px;font-size:14px}
    .privacy{display:flex;gap:10px;align-items:flex-start;margin:14px 10px 0;color:var(--muted);font-size:12px;line-height:1.6}.privacy svg{width:16px;flex:none;margin-top:2px;color:var(--accent)}
    .workspace{display:none;margin-top:30px}.workspace.visible{display:block}.queue{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .queue-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line)}.queue-head h2{font-size:16px;margin:0}.queue-head small{font-family:"IBM Plex Mono",monospace;color:var(--muted);margin-left:10px}.link-btn{border:0;background:none;color:var(--muted);padding:6px;font-size:13px}.link-btn:hover{color:var(--danger)}
    .file-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));max-height:330px;overflow:auto}.file-row{display:grid;grid-template-columns:42px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}.file-row:nth-child(odd){border-right:1px solid var(--line)}
    .thumb{width:42px;height:42px;border-radius:8px;overflow:hidden;background:var(--surface-2);display:grid;place-items:center;color:var(--muted);font-size:10px;font-family:"IBM Plex Mono",monospace}.thumb img{width:100%;height:100%;object-fit:cover}.file-info{min-width:0}.file-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px;font-weight:600}.file-meta{font-size:11px;color:var(--muted);margin-top:3px}.remove{border:0;background:none;color:var(--muted);width:30px;height:30px;border-radius:8px;font-size:18px}.remove:hover{background:var(--surface-2);color:var(--danger)}
    .tool-shell{display:grid;grid-template-columns:215px minmax(0,1fr);gap:20px;margin-top:20px}.tool-nav{display:flex;flex-direction:column;gap:7px;align-self:start;position:sticky;top:20px}.tool-tab{border:0;background:transparent;color:var(--muted);text-align:left;padding:12px 14px;border-radius:11px;font-weight:600;display:flex;align-items:center;gap:11px}.tool-tab svg{width:19px;height:19px}.tool-tab.active{background:var(--ink);color:var(--bg)}.tool-tab:not(.active):hover{background:var(--surface-2);color:var(--ink)}
    .panel{display:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px}.panel.active{display:block}.panel-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:24px}.panel h2{font-size:24px;margin:0 0 6px;letter-spacing:-.02em}.panel-head p{margin:0;color:var(--muted);font-size:13px}.step{font-family:"IBM Plex Mono",monospace;color:var(--accent);font-size:12px;background:var(--accent-soft);padding:6px 9px;border-radius:7px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.field{display:flex;flex-direction:column;gap:8px}.field.full{grid-column:1/-1}.field label{font-size:12px;font-weight:700;color:var(--muted)}.field input,.field select{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:10px;padding:11px 12px;outline:0}.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
    .range-line{display:flex;align-items:center;gap:12px}.range-line input[type=range]{padding:0;accent-color:var(--accent);border:0;background:transparent}.range-value{font-family:"IBM Plex Mono",monospace;font-size:13px;min-width:44px;text-align:right;color:var(--accent)}
    .hint{font-size:11px;color:var(--muted);line-height:1.6}.preview-name{background:var(--surface-2);border-radius:10px;padding:11px 12px;color:var(--muted);font-family:"IBM Plex Mono",monospace;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .action-row{display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.primary{border:0;border-radius:11px;padding:12px 20px;background:var(--accent);color:#fff;font-weight:700;min-width:150px}.primary:hover{background:var(--accent-2)}.primary:disabled{opacity:.45;cursor:not-allowed}.status{font-size:12px;color:var(--muted);line-height:1.5}.status.error{color:var(--danger)}.status.ok{color:var(--accent)}
    .mode-switch{display:flex;gap:6px;padding:4px;background:var(--surface-2);border-radius:11px;margin-bottom:20px;width:max-content;max-width:100%}.mode-switch button{border:0;background:transparent;color:var(--muted);border-radius:8px;padding:8px 13px;font-size:13px;font-weight:600}.mode-switch button.active{background:var(--surface);color:var(--ink);box-shadow:0 2px 8px rgba(0,0,0,.08)}
    .callout{margin-top:18px;background:var(--accent-soft);border-radius:11px;padding:12px 14px;color:var(--ink);font-size:12px;line-height:1.65}.callout strong{color:var(--accent)}
    .empty-note{border:1px dashed var(--line);border-radius:12px;padding:18px;text-align:center;color:var(--muted);font-size:13px}.footer-note{margin-top:24px;text-align:center;color:var(--muted);font-size:11px}
    .toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,18px);background:var(--ink);color:var(--bg);padding:11px 16px;border-radius:10px;font-size:12px;opacity:0;pointer-events:none;transition:.25s;z-index:10;box-shadow:var(--shadow)}.toast.show{opacity:1;transform:translate(-50%,0)}
    @media(max-width:780px){.wrap{width:min(100% - 24px,680px);padding:30px 0 50px}.hero{grid-template-columns:1fr;gap:16px;margin-bottom:22px}.hero p{font-size:14px}.dropzone{min-height:205px;padding:26px 18px;border-radius:20px}.file-list{grid-template-columns:1fr}.file-row:nth-child(odd){border-right:0}.tool-shell{grid-template-columns:1fr}.tool-nav{position:static;display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.tool-tab{padding:10px 8px;justify-content:center;text-align:center;flex-direction:column;gap:5px;font-size:11px}.tool-tab svg{width:18px;height:18px}.panel{padding:20px 16px}.panel h2{font-size:21px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.panel-head{margin-bottom:20px}.action-row{align-items:stretch;flex-direction:column}.primary{width:100%}.status{text-align:center}.queue-head{padding:15px}.queue-head small{display:block;margin:4px 0 0}.mode-switch{width:100%}.mode-switch button{flex:1;padding-inline:7px}.step{display:none}}
    @media(max-width:420px){h1{font-size:36px}.tool-nav{grid-template-columns:repeat(2,1fr)}.file-row{grid-template-columns:38px minmax(0,1fr) auto}.thumb{width:38px;height:38px}}
    @media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
  
.file-row{grid-template-columns:42px minmax(0,1fr) auto}.file-actions{display:flex;gap:3px;align-items:center}.file-actions button{min-width:32px;min-height:36px}.file-actions .move{font-size:12px}.rename-list{max-height:160px;overflow:auto;white-space:normal;line-height:1.8}.task-controls{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:18px 0}.error-list{padding:12px 18px;background:#fff4ed;border:1px solid #fed7aa;border-radius:12px;color:#9a3412;font-size:13px;line-height:1.7}.error-list:empty{display:none}.dropzone[aria-disabled=true]{opacity:.6;pointer-events:none}.dropzone:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.preview-dialog{max-width:min(96vw,1000px);max-height:90vh;width:900px;border:1px solid var(--line);border-radius:18px;padding:20px}.preview-dialog img{display:block;max-width:100%;max-height:65vh;margin:auto}.preview-dialog::backdrop{background:rgba(15,23,42,.55)}.preview-dialog header{display:flex;justify-content:space-between;gap:12px;align-items:center}.preview-dialog pre{white-space:pre-wrap;overflow-wrap:anywhere;max-height:65vh;overflow:auto}