:root{
    --ink:#14171C;
    --desk:#1B1F26;
    --desk-2:#20252E;
    --paper:#F2ECDD;
    --paper-dim:#DCD5C2;
    --stamp:#D34B3D;
    --stamp-dark:#A93A2F;
    --teal:#4FB3A9;
    --muted:#8B92A0;
    --line: rgba(242,236,221,0.12);
    --radius: 3px;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:
      radial-gradient(ellipse at 20% -10%, rgba(79,179,169,0.08), transparent 45%),
      radial-gradient(ellipse at 100% 0%, rgba(211,75,61,0.08), transparent 40%),
      var(--ink);
    color: var(--paper);
    font-family:'IBM Plex Sans', sans-serif;
    min-height:100vh;
    -webkit-font-smoothing:antialiased;
  }
  .desk{
    max-width: 920px;
    margin: 0 auto;
    padding: 48px 24px 80px;
  }
  header{
    margin-bottom: 36px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 28px;
  }
  .brand{
    font-family:'Fraunces', serif;
    font-weight: 600;
    font-size: clamp(32px, 5vw, 44px);
    letter-spacing: -0.01em;
    display:flex;
    align-items:baseline;
    gap: 10px;
  }
  .brand .slash{ color: var(--stamp); font-weight:400; }
  .brand .sub{
    font-family:'IBM Plex Mono', monospace;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .tagline{
    margin-top: 10px;
    color: var(--muted);
    font-size: 15px;
    max-width: 52ch;
    line-height: 1.5;
  }
  .tagline b{ color: var(--teal); font-weight:600; }

  nav.tabs{
    display:flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: -1px;
    position:relative;
    z-index: 2;
  }
  .tab{
    display:flex;
    align-items:center;
    gap: 7px;
    font-family:'IBM Plex Mono', monospace;
    font-size: 12.5px;
    letter-spacing: 0.03em;
    background: transparent;
    border: 1px solid var(--line);
    border-bottom: none;
    color: var(--muted);
    padding: 11px 15px;
    cursor:pointer;
    border-radius: 6px 6px 0 0;
    transition: color .15s, background .15s;
  }
  .tab:hover{ color: var(--paper); }
  .tab.active{
    background: var(--desk-2);
    color: var(--paper);
    border-color: var(--line);
  }
  .tab svg{
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
  }
  .tab.active svg{ stroke: var(--stamp); }

  main{
    background: var(--desk-2);
    border: 1px solid var(--line);
    border-radius: 0 8px 8px 8px;
    padding: 32px;
    min-height: 420px;
  }
  .panel{ display:none; }
  .panel.active{ display:block; animation: fade .25s ease; }
  @keyframes fade{ from{opacity:0; transform:translateY(4px);} to{opacity:1; transform:none;} }

  h2{
    font-family:'Fraunces', serif;
    font-weight:500;
    font-size: 22px;
    margin: 0 0 6px;
  }
  .desc{ color: var(--muted); font-size: 14px; margin: 0 0 24px; line-height:1.5; }

  .dropzone{
    border: 1.5px dashed var(--line);
    border-radius: 8px;
    padding: 36px 20px;
    text-align:center;
    cursor:pointer;
    transition: border-color .15s, background .15s;
    position:relative;
  }
  .dropzone:hover, .dropzone.drag{
    border-color: var(--teal);
    background: rgba(79,179,169,0.05);
  }
  .dropzone .icon{ font-size: 26px; margin-bottom: 8px; opacity:.8; }
  .dropzone p{ margin:0; color: var(--muted); font-size:13.5px; }
  .dropzone input{ display:none; }

  .stack{
    list-style:none;
    margin: 22px 0 0;
    padding:0;
    display:flex;
    flex-direction:column;
    gap: 8px;
  }
  .paper-card{
    background: var(--paper);
    color: #22242A;
    border-radius: var(--radius);
    padding: 12px 14px;
    display:flex;
    align-items:center;
    gap: 12px;
    box-shadow: 0 1px 0 rgba(0,0,0,0.25), 0 6px 14px -8px rgba(0,0,0,0.5);
    cursor: grab;
    transition: transform .12s;
  }
  .paper-card:active{ cursor:grabbing; }
  .paper-card.dragging{ opacity:0.4; }
  .paper-card .num{
    font-family:'IBM Plex Mono', monospace;
    font-size: 12px;
    color: var(--stamp-dark);
    font-weight:600;
    min-width: 20px;
  }
  .paper-card .fname{
    flex:1;
    font-size: 13.5px;
    font-weight:500;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
  }
  .paper-card .fsize{
    font-family:'IBM Plex Mono', monospace;
    font-size: 11.5px;
    color: #6b6f78;
  }
  .paper-card .rm{
    background:none;
    border:none;
    color:#9a3b30;
    cursor:pointer;
    font-size: 16px;
    line-height:1;
    padding: 2px 6px;
    border-radius:4px;
  }
  .paper-card .rm:hover{ background: rgba(154,59,48,0.12); }
  .drag-hint{ font-size: 11.5px; color: var(--muted); margin-top:10px; font-family:'IBM Plex Mono',monospace;}

  .row{ display:flex; gap: 12px; flex-wrap:wrap; align-items:center; margin-top: 20px; }
  .field{ display:flex; flex-direction:column; gap:6px; }
  .field label{ font-size:12px; color:var(--muted); font-family:'IBM Plex Mono', monospace; text-transform:uppercase; letter-spacing:.05em;}
  select, input[type=text]{
    background: var(--desk);
    border: 1px solid var(--line);
    color: var(--paper);
    padding: 9px 11px;
    border-radius: 6px;
    font-family:'IBM Plex Mono', monospace;
    font-size: 13px;
    min-width: 160px;
  }
  input[type=range]{ accent-color: var(--stamp); width: 180px; }

  button.action{
    font-family:'IBM Plex Mono', monospace;
    font-weight:600;
    font-size: 13px;
    letter-spacing: 0.03em;
    background: var(--stamp);
    color: #1a0d0a;
    border: none;
    padding: 12px 22px;
    border-radius: 6px;
    cursor:pointer;
    text-transform:uppercase;
    transition: transform .1s, background .15s;
  }
  button.action:hover{ background: #E15C4D; }
  button.action:active{ transform: scale(0.98); }
  button.action:disabled{ background:#5a5148; color:#8b8375; cursor:not-allowed; }

  .status{
    margin-top: 18px;
    font-size: 13px;
    color: var(--teal);
    font-family:'IBM Plex Mono', monospace;
    min-height: 18px;
  }
  .status.err{ color: var(--stamp); }

  .stamp-mark{
    display:inline-block;
    border: 2px solid var(--teal);
    color: var(--teal);
    font-family:'IBM Plex Mono', monospace;
    font-size: 11px;
    font-weight:700;
    letter-spacing: 0.1em;
    padding: 4px 10px;
    border-radius: 4px;
    transform: rotate(-3deg);
    margin-top: 14px;
  }

  .compare{
    display:flex;
    gap: 20px;
    margin-top: 18px;
    align-items:center;
  }
  .compare .box{
    background: var(--desk);
    border:1px solid var(--line);
    border-radius:8px;
    padding: 14px 18px;
    text-align:center;
    min-width: 120px;
  }
  .compare .box .label{ font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:.05em; font-family:'IBM Plex Mono', monospace;}
  .compare .box .val{ font-family:'Fraunces', serif; font-size: 22px; margin-top:4px; }
  .compare .arrow{ color: var(--muted); font-size: 20px; }
  .compare .pct{ color: var(--teal); font-family:'IBM Plex Mono', monospace; font-size: 13px; }

  .meta-row{
    display:flex;
    justify-content:space-between;
    gap: 16px;
    padding: 10px 16px;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    font-size: 13.5px;
  }
  .meta-row:last-child{ border-bottom:none; }
  .meta-row .k{
    font-family:'IBM Plex Mono', monospace;
    font-size: 11.5px;
    color: #6b6f78;
    text-transform: uppercase;
    letter-spacing: .04em;
    min-width: 140px;
  }
  .meta-row .v{
    flex:1;
    text-align:right;
    word-break: break-word;
    font-weight:500;
  }
  .meta-empty{ padding: 16px; font-size:13.5px; color:#6b6f78; text-align:center; }

  footer{
    text-align:center;
    margin-top: 32px;
    color: var(--muted);
    font-size: 12px;
    font-family:'IBM Plex Mono', monospace;
    letter-spacing: .03em;
  }
  footer .dot{ color: var(--teal); }

  @media (max-width: 640px){
    .desk{ padding: 28px 16px 60px; }
    main{ padding: 20px; }
    .tab{ padding: 10px 12px; font-size:12px; }
    .compare{ flex-wrap:wrap; }
  }


  .page-header{ display:flex; justify-content:space-between; align-items:center; margin-bottom:28px; flex-wrap:wrap; gap:12px; }
  .brand-mini{ font-family:'Fraunces', serif; font-weight:600; font-size:20px; color:var(--paper); text-decoration:none; }
  .brand-mini .slash{ color:var(--stamp); font-weight:400; }
  .all-tools-link{ font-family:'IBM Plex Mono', monospace; font-size:12.5px; color:var(--muted); text-decoration:none; border:1px solid var(--line); padding:8px 14px; border-radius:6px; transition:color .15s, border-color .15s; }
  .all-tools-link:hover{ color:var(--paper); border-color:var(--teal); }
  .tool-shell{ background:var(--desk-2); border:1px solid var(--line); border-radius:8px; padding:32px; }
  .related{ margin-top:36px; padding-top:24px; border-top:1px solid var(--line); }
  .related h3{ font-family:'IBM Plex Mono', monospace; font-size:12px; text-transform:uppercase; letter-spacing:.05em; color:var(--muted); margin:0 0 14px; }
  .related-links{ display:flex; flex-wrap:wrap; gap:8px; }
  .related-links a{ font-family:'IBM Plex Mono', monospace; font-size:12.5px; color:var(--paper); text-decoration:none; background:var(--desk); border:1px solid var(--line); padding:7px 12px; border-radius:6px; }
  .related-links a:hover{ border-color:var(--teal); color:var(--teal); }

  .hero{ text-align:left; margin-bottom:40px; }
  .hero p.lede{ color:var(--muted); font-size:16px; max-width:60ch; line-height:1.6; margin-top:14px; }
  .tool-grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(260px,1fr)); gap:14px; margin-top:8px; }
  .tool-card{ background:var(--desk-2); border:1px solid var(--line); border-radius:8px; padding:20px; text-decoration:none; display:flex; flex-direction:column; gap:10px; transition:border-color .15s, transform .12s; }
  .tool-card:hover{ border-color:var(--teal); transform:translateY(-2px); }
  .tool-card svg{ width:22px; height:22px; stroke:var(--stamp); fill:none; stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round; }
  .tool-card h2{ font-family:'Fraunces', serif; font-weight:500; font-size:17px; color:var(--paper); margin:0; }
  .tool-card p{ color:var(--muted); font-size:13px; line-height:1.5; margin:0; }
  .about-acerkate{ margin-top:56px; padding-top:28px; border-top:1px solid var(--line); color:var(--muted); font-size:13.5px; line-height:1.6; }
  .about-acerkate a{ color:var(--teal); }