.flt-app{
    /* ===== EduTaxTuber theme tokens =====
       Matched to the site's own header color (#111827) and a
       trust-blue accent common to finance/edu themes. Edit these
       six values to re-match the theme if it ever changes. */
    --flt-ink:#111827;
    --flt-ink-soft:#5B6472;
    --flt-paper:#FFFFFF;
    --flt-manila:#F1F5F9;
    --flt-manila-deep:#E2E8F0;
    --flt-line:#E2E8F0;
    --flt-amber:#2563EB;
    --flt-amber-deep:#1D4ED8;
    --flt-success:#16A34A;
    --flt-error:#DC2626;
    --flt-mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
    --flt-sans: 'Inter', -apple-system, Segoe UI, sans-serif;

    max-width: 1200px;
    margin: 2.5rem auto;
    padding: 0 1rem;
    font-family: var(--flt-sans);
    color: var(--flt-ink);
    box-sizing: border-box;
  }
  .flt-app *{ box-sizing: border-box; }

  .flt-head{ margin-bottom: 1.5rem; }
  .flt-eyebrow{
    font-family: var(--flt-mono);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.09em;
    color: var(--flt-amber-deep);
    margin: 0 0 0.5rem;
  }
  .flt-title{
    font-family: var(--flt-mono);
    font-size: 2.4rem;
    font-weight: 600;
    margin: 0 0 0.6rem;
    letter-spacing: -0.01em;
  }
  .flt-sub{
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--flt-ink-soft);
    margin: 0;
    max-width: 72ch;
  }

  /* ---- Tab bar styled like file-folder tabs ---- */
  .flt-tabs{ display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 2rem; }
  .flt-tab{
    font-family: var(--flt-mono);
    font-size: 0.84rem;
    font-weight: 500;
    background: var(--flt-manila);
    color: var(--flt-ink-soft);
    border: 1px solid var(--flt-line);
    border-bottom: none;
    padding: 0.7rem 1rem 0.65rem;
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    position: relative;
    top: 1px;
    transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
  }
  .flt-tab:hover{ background: var(--flt-manila-deep); color: var(--flt-ink); }
  .flt-tab .flt-tab-tag{
    display: block;
    font-size: 0.66rem;
    letter-spacing: 0.08em;
    color: var(--flt-amber-deep);
    margin-bottom: 0.15rem;
  }
  .flt-tab[aria-selected="true"]{
    background: var(--flt-paper);
    color: var(--flt-ink);
    border-color: var(--flt-line);
    font-weight: 600;
    transform: translateY(-2px);
  }
  .flt-tab:focus-visible{ outline: 2px solid var(--flt-amber-deep); outline-offset: 2px; }

  .flt-panel{
    background: var(--flt-paper);
    border: 1px solid var(--flt-line);
    border-radius: 0 12px 12px 12px;
    padding: 2rem;
    box-shadow: 0 1px 2px rgba(17,24,39,0.04), 0 8px 24px rgba(17,24,39,0.06);
  }

  .flt-hint{ font-size: 0.95rem; color: var(--flt-ink-soft); margin: 0 0 1.25rem; }

  /* ---- Dropzone ---- */
  .flt-dropzone{
    border: 1.5px dashed var(--flt-line);
    border-radius: 10px;
    padding: 3rem 1rem;
    text-align: center;
    cursor: pointer;
    color: var(--flt-ink-soft);
    background: repeating-linear-gradient(135deg, rgba(148,163,184,0.16) 0 2px, transparent 2px 14px);
    transition: border-color 0.15s ease, background-color 0.15s ease;
  }
  .flt-dropzone:hover, .flt-dropzone:focus-visible{
    border-color: var(--flt-amber-deep);
    background-color: rgba(37,99,235,0.05);
    outline: none;
  }
  .flt-dropzone.flt-dragover{ border-color: var(--flt-amber-deep); background-color: rgba(37,99,235,0.1); }
  .flt-dz-icon{ color: var(--flt-amber-deep); margin-bottom: 0.5rem; }
  .flt-dz-text{ margin: 0 0 0.25rem; font-size: 0.95rem; color: var(--flt-ink); }
  .flt-dz-accept{ margin: 0; font-family: var(--flt-mono); font-size: 0.72rem; color: var(--flt-ink-soft); }
  .flt-visually-hidden{ position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

  /* ---- Simple file list (files-mode tools) ---- */
  .flt-filelist{ list-style: none; margin: 1rem 0 0; padding: 0; }
  .flt-filelist:empty{ margin: 0; }
  .flt-file-row{
    display: flex; align-items: center; gap: 0.6rem;
    background: var(--flt-manila);
    border: 1px solid var(--flt-line);
    border-radius: 7px;
    padding: 0.5rem 0.7rem;
    margin-top: 0.5rem;
    font-size: 0.85rem;
  }
  .flt-file-thumb{
    width: 34px; height: 34px; border-radius: 5px; flex-shrink: 0;
    object-fit: cover; background: var(--flt-manila-deep);
    border: 1px solid var(--flt-line);
  }
  .flt-file-thumb-icon{
    width: 34px; height: 34px; border-radius: 5px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    background: var(--flt-manila-deep); border: 1px solid var(--flt-line);
    font-family: var(--flt-mono); font-size: 0.55rem; font-weight: 600;
    color: var(--flt-ink-soft);
  }
  .flt-file-draggable{ cursor: grab; }
  .flt-file-draggable.flt-dragging{ opacity: 0.4; cursor: grabbing; }
  .flt-file-draggable.flt-drop-before{ box-shadow: inset 0 2px 0 var(--flt-amber-deep); }
  .flt-file-draggable.flt-drop-after{ box-shadow: inset 0 -2px 0 var(--flt-amber-deep); }
  .flt-file-handle{ color: var(--flt-ink-soft); font-size: 0.8rem; letter-spacing: -2px; user-select: none; cursor: grab; }
  .flt-file-name{ flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .flt-file-size{ font-family: var(--flt-mono); font-size: 0.72rem; color: var(--flt-ink-soft); }
  .flt-file-move{ background: none; border: none; cursor: pointer; color: var(--flt-ink-soft); font-size: 0.9rem; line-height: 1; padding: 0.2rem 0.35rem; border-radius: 5px; }
  .flt-file-move:hover{ background: var(--flt-manila-deep); color: var(--flt-ink); }
  .flt-file-move:disabled{ opacity: 0.3; cursor: default; }
  .flt-file-remove{ background: none; border: none; cursor: pointer; color: var(--flt-error); font-size: 1rem; line-height: 1; padding: 0.2rem 0.4rem; border-radius: 5px; }
  .flt-file-remove:hover{ background: rgba(220,38,38,0.1); }

  /* ---- Page preview grid (pages-mode tools) ---- */
  .flt-pagegrid{
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(112px, 1fr));
    gap: 0.7rem;
    margin-top: 1rem;
  }
  .flt-pagegrid:empty{ margin-top: 0; }
  .flt-loading-text{
    grid-column: 1 / -1;
    font-family: var(--flt-mono); font-size: 0.78rem; color: var(--flt-ink-soft);
    margin: 0; padding: 0.5rem 0;
  }
  .flt-page-cell{
    background: var(--flt-manila);
    border: 1px solid var(--flt-line);
    border-radius: 8px;
    padding: 0.5rem;
    display: flex; flex-direction: column; align-items: center; gap: 0.35rem;
    position: relative;
  }
  .flt-page-draggable{ cursor: grab; }
  .flt-page-draggable.flt-dragging{ opacity: 0.4; }
  .flt-page-draggable.flt-drop-before{ box-shadow: inset 2px 0 0 var(--flt-amber-deep); }
  .flt-page-draggable.flt-drop-after{ box-shadow: inset -2px 0 0 var(--flt-amber-deep); }
  .flt-page-thumb-wrap{
    width: 100%; height: 110px;
    display: flex; align-items: center; justify-content: center;
    overflow: visible;
  }
  .flt-page-thumb{
    max-width: 100%; max-height: 100%;
    object-fit: contain;
    border: 1px solid var(--flt-line);
    background: #fff;
    transition: transform 0.15s ease;
  }
  .flt-page-check{ position: absolute; top: 0.5rem; left: 0.5rem; width: 16px; height: 16px; accent-color: var(--flt-amber); }
  .flt-page-remove{
    position: absolute; top: 0.35rem; right: 0.35rem;
    background: rgba(255,255,255,0.9); border: 1px solid var(--flt-line); border-radius: 50%;
    width: 20px; height: 20px; line-height: 1; font-size: 0.75rem; color: var(--flt-error);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
  }
  .flt-page-label{ font-family: var(--flt-mono); font-size: 0.66rem; color: var(--flt-ink-soft); text-align: center; }
  .flt-page-rotate{
    font-family: var(--flt-sans); font-size: 0.72rem; font-weight: 600;
    background: #fff; border: 1px solid var(--flt-line); border-radius: 6px;
    padding: 0.25rem 0.5rem; cursor: pointer; color: var(--flt-ink);
  }
  .flt-page-rotate:hover{ background: var(--flt-manila-deep); }

  /* ---- Options ---- */
  .flt-options{ margin-top: 1rem; }
  .flt-options:empty{ margin-top: 0; }
  .flt-opt-row{ margin-bottom: 0.85rem; display: flex; flex-direction: column; gap: 0.3rem; }
  .flt-opt-label{
    display: block; font-family: var(--flt-mono); font-size: 0.72rem; font-weight: 600;
    letter-spacing: 0.05em; color: var(--flt-ink-soft); text-transform: uppercase;
  }
  .flt-radio-group{ display: flex; gap: 0.5rem; flex-wrap: wrap; }
  .flt-radio-pill{
    font-family: var(--flt-mono); font-size: 0.78rem; padding: 0.4rem 0.75rem; border-radius: 20px;
    border: 1px solid var(--flt-line); background: var(--flt-manila); cursor: pointer; color: var(--flt-ink-soft);
  }
  .flt-radio-pill.flt-active{ background: var(--flt-amber); border-color: var(--flt-amber-deep); color: #fff; font-weight: 600; }
  .flt-range-label-row{ display: flex; align-items: baseline; justify-content: space-between; gap: 0.5rem; }
  .flt-range-value{ font-family: var(--flt-mono); font-size: 0.75rem; color: var(--flt-amber-deep); font-weight: 600; }
  .flt-range{
    width: 100%; -webkit-appearance: none; appearance: none; height: 6px; border-radius: 4px;
    background: var(--flt-manila-deep); margin-top: 0.35rem; outline: none;
  }
  .flt-range::-webkit-slider-thumb{
    -webkit-appearance: none; appearance: none; width: 18px; height: 18px; border-radius: 50%;
    background: var(--flt-amber); border: 2px solid #fff; box-shadow: 0 0 0 1px var(--flt-amber-deep); cursor: pointer;
  }
  .flt-range::-moz-range-thumb{
    width: 16px; height: 16px; border-radius: 50%; background: var(--flt-amber);
    border: 2px solid #fff; box-shadow: 0 0 0 1px var(--flt-amber-deep); cursor: pointer;
  }
  .flt-btn-small{ padding: 0.35rem 0.7rem; font-size: 0.78rem; align-self: flex-start; }

  /* ---- Actions ---- */
  .flt-actions{ display: flex; gap: 0.6rem; margin-top: 1.35rem; }
  .flt-btn{
    font-family: var(--flt-sans); font-size: 0.9rem; font-weight: 600; padding: 0.65rem 1.3rem;
    border-radius: 8px; border: 1px solid transparent; cursor: pointer;
    transition: background 0.15s ease, transform 0.1s ease;
  }
  .flt-btn:active{ transform: translateY(1px); }
  .flt-btn-primary{ background: var(--flt-amber); color: #fff; border-color: var(--flt-amber-deep); }
  .flt-btn-primary:hover:not(:disabled){ background: var(--flt-amber-deep); }
  .flt-btn-primary:disabled{ opacity: 0.45; cursor: not-allowed; }
  .flt-btn-ghost{ background: transparent; color: var(--flt-ink-soft); border-color: var(--flt-line); }
  .flt-btn-ghost:hover{ background: var(--flt-manila); color: var(--flt-ink); }
  .flt-btn:focus-visible{ outline: 2px solid var(--flt-amber-deep); outline-offset: 2px; }

  /* ---- Progress ---- */
  .flt-progress-wrap{ margin-top: 1.25rem; }
  .flt-progress-track{ height: 6px; border-radius: 4px; background: var(--flt-manila-deep); overflow: hidden; }
  .flt-progress-bar{ height: 100%; width: 0%; background: var(--flt-amber-deep); transition: width 0.2s ease; }
  .flt-progress-text{ font-family: var(--flt-mono); font-size: 0.75rem; color: var(--flt-ink-soft); margin: 0.5rem 0 0; }

  /* ---- Result ---- */
  .flt-result{ margin-top: 1.25rem; padding: 1rem; border-radius: 8px; background: rgba(22,163,74,0.08); border: 1px solid rgba(22,163,74,0.3); }
  .flt-result.flt-result-error{ background: rgba(220,38,38,0.08); border-color: rgba(220,38,38,0.3); }
  .flt-result-title{ font-weight: 600; margin: 0 0 0.3rem; font-size: 0.92rem; }
  .flt-result-meta{ font-size: 0.82rem; color: var(--flt-ink-soft); margin: 0 0 0.75rem; }
  .flt-result-downloads{ display: flex; flex-wrap: wrap; gap: 0.5rem; }
  .flt-download-btn{
    display: inline-block; font-family: var(--flt-sans); font-size: 0.85rem; font-weight: 600;
    text-decoration: none; background: var(--flt-ink); color: #fff; padding: 0.55rem 1rem; border-radius: 7px;
  }
  .flt-download-btn:hover{ background: #2b3646; }
  .flt-dl-size{ opacity: 0.75; font-weight: 500; }

  .flt-privacy{ font-size: 0.76rem; color: var(--flt-ink-soft); text-align: center; margin-top: 1rem; }
  .flt-credit{ font-size: 0.72rem; color: var(--flt-ink-soft); text-align: center; margin-top: 0.35rem; opacity: 0.8; }

  @media (max-width: 480px){
    .flt-title{ font-size: 1.5rem; }
    .flt-panel{ padding: 1.1rem; }
    .flt-actions{ flex-direction: column; }
    .flt-btn{ width: 100%; }
    .flt-pagegrid{ grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); }
  }

  @media (prefers-reduced-motion: reduce){ .flt-app *{ transition: none !important; } }
  .etf-faq{
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    font-family: 'Inter', -apple-system, Segoe UI, sans-serif;
    color: #111827;
    box-sizing: border-box;
  }
  .etf-faq *{ box-sizing: border-box; }
  .etf-faq-title{
    font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
    font-size: 1.6rem;
    font-weight: 600;
    margin: 1.75rem 0 1rem;
  }
  .etf-faq-steps{ margin: 0 0 0.5rem; padding-left: 1.25rem; }
  .etf-faq-steps li{ margin-bottom: 0.5rem; font-size: 1rem; line-height: 1.6; }
  .etf-faq-note{ font-size: 0.9rem; color: #5B6472; margin: 0 0 1rem; }

  .etf-faq-item{
    background: #F1F5F9;
    border: 1px solid #E2E8F0;
    border-radius: 8px;
    padding: 0.85rem 1rem;
    margin-bottom: 0.6rem;
  }
  .etf-faq-item summary{
    font-weight: 600;
    font-size: 1.02rem;
    cursor: pointer;
    list-style: none;
    position: relative;
    padding-right: 1.5rem;
  }
  .etf-faq-item summary::-webkit-details-marker{ display: none; }
  .etf-faq-item summary::after{
    content: "+";
    position: absolute;
    right: 0;
    top: 0;
    font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
    font-size: 1.1rem;
    color: #2563EB;
  }
  .etf-faq-item[open] summary::after{ content: "\2212"; }
  .etf-faq-item p{
    margin: 0.6rem 0 0;
    font-size: 0.97rem;
    line-height: 1.6;
    color: #374151;
  }
  .etf-faq-credit{
    font-size: 0.72rem;
    color: #5B6472;
    text-align: center;
    margin-top: 1.5rem;
    opacity: 0.8;
  }