/* Shared palette and accessibility primitives come from /assets/brand.css. */
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:var(--ink);
    color:var(--bone);
    font-family:'IBM Plex Mono',monospace;
    -webkit-font-smoothing:antialiased;
    min-height:100vh;
  }
  ::selection{ background:var(--signal); color:var(--ink); }
  a{ color:inherit; }

  .wrap{
    max-width:960px;
    margin:0 auto;
    padding:0 24px;
  }

  /* ---------- HEADER ---------- */
  header{
    border-bottom:1px solid var(--line);
    padding:22px 0;
  }
  .head-row{
    display:flex; align-items:center; justify-content:space-between;
  }
  .wordmark{
    font-family:'IBM Plex Mono',monospace;
    font-weight:700;
    font-size:18px;
    letter-spacing:0.02em;
  }
  .wordmark span{ color:var(--ash); }
  .head-tag{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    color:var(--ash);
    letter-spacing:0.06em;
    text-transform:uppercase;
  }

  /* ---------- HERO ---------- */
  .hero{
    padding:64px 0 40px;
    border-bottom:1px solid var(--line);
  }
  .eyebrow{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--ash);
    text-transform:uppercase;
    letter-spacing:0.08em;
    margin-bottom:18px;
  }
  h1{
    font-weight:600;
    font-size:clamp(24px,3.8vw,36px);
    line-height:1.2;
    letter-spacing:0.02em;
    margin:0 0 20px;
    max-width:16ch;
    text-transform:uppercase;
  }
  h1 em{
    font-style:normal;
    color:var(--parchment);
  }
  .sub{
    font-size:16px;
    line-height:1.6;
    color:#B7B6AC;
    max-width:52ch;
    margin:0;
  }
  .sub b{ color:var(--bone); font-weight:600; }

  /* ---------- GAUGE ---------- */
  .gauge-block{
    display:flex;
    gap:48px;
    align-items:center;
    margin-top:44px;
    flex-wrap:wrap;
  }
  .gauge-svg{ width:220px; height:130px; flex:none; }
  .gauge-labels{
    display:flex;
    justify-content:space-between;
    width:220px;
    margin-top:6px;
    font-family:'IBM Plex Mono',monospace;
    font-size:10px;
    letter-spacing:0.06em;
    text-transform:uppercase;
  }
  .gauge-labels .l-dark{ color:var(--signal); }
  .gauge-labels .l-light{ color:var(--parchment); }

  .verdict-readout{ min-width:220px; }
  .readout-label{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    color:var(--ash);
    text-transform:uppercase;
    letter-spacing:0.08em;
    margin-bottom:8px;
  }
  .readout-value{
    font-family:'Bebas Neue',sans-serif;
    font-weight:400;
    font-size:34px;
    letter-spacing:0.02em;
    color:var(--ash);
    transition:color .3s;
  }
  .readout-value.is-dark{ color:var(--signal); }
  .readout-value.is-light{ color:var(--parchment); }
  .readout-score{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    color:var(--ash);
    margin-top:6px;
  }

  /* ---------- INPUT PANEL ---------- */
  .panel{
    padding:44px 0;
    border-bottom:1px solid var(--line);
  }
  .panel-label{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    color:var(--ash);
    text-transform:uppercase;
    letter-spacing:0.08em;
    margin-bottom:12px;
    display:flex;
    justify-content:space-between;
  }
  textarea{
    width:100%;
    min-height:220px;
    resize:vertical;
    background:var(--graphite);
    border:1px solid var(--line);
    border-radius:0px;
    color:var(--bone);
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    line-height:1.6;
    padding:18px;
    outline:none;
  }
  textarea::placeholder{ color:var(--ash); }
  textarea:focus{ border-color:var(--ash); }
  textarea:focus-visible{ outline:2px solid var(--parchment); outline-offset:2px; }

  .panel-footer{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-top:16px;
    gap:16px;
    flex-wrap:wrap;
  }
  .hint{
    font-size:12.5px;
    color:var(--ash);
    max-width:44ch;
  }
  button.run{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    font-weight:600;
    letter-spacing:0.04em;
    text-transform:uppercase;
    background:var(--graphite);
    color:var(--parchment);
    border:1px solid var(--line);
    border-radius:0px;
    padding:13px 22px;
    cursor:pointer;
    transition:border-color .15s ease, color .15s ease;
    flex:none;
  }
  button.run:hover{ border-color:var(--signal); color:var(--signal); }
  button.run:active{ transform:scale(0.97); }
  button.run:disabled{ background:var(--graphite); color:var(--ash); border-color:var(--line); cursor:progress; }
  button.run:focus-visible{ outline:2px solid var(--signal); outline-offset:2px; }

  .error-msg{
    font-family:'IBM Plex Mono',monospace;
    font-size:12.5px;
    color:var(--signal);
    margin-top:10px;
    display:none;
  }

  /* ---------- FINDINGS ---------- */
  .results{
    padding:44px 0 60px;
    display:none;
  }
  .results.show{ display:block; }
  .summary{
    font-size:16px;
    line-height:1.65;
    color:var(--bone);
    max-width:58ch;
    margin:0 0 32px;
    padding:18px 20px;
    background:var(--graphite);
    border-left:2px solid var(--ash);
  }
  .summary.dark{ border-left-color:var(--signal); }
  .summary.light{ border-left-color:var(--parchment); }

  .findings-label{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    color:var(--ash);
    text-transform:uppercase;
    letter-spacing:0.08em;
    margin-bottom:14px;
  }
  .findings{
    display:flex;
    flex-direction:column;
    border-top:1px solid var(--line);
  }
  .finding{
    display:flex;
    align-items:flex-start;
    gap:16px;
    padding:16px 0;
    border-bottom:1px solid var(--line);
    opacity:0;
  }
  .finding-mark{
    flex:none;
    width:24px; height:24px;
    border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    font-weight:600;
    margin-top:1px;
  }
  .finding-mark.pass{ background:var(--line); color:var(--parchment); }
  .finding-mark.fail{ background:var(--signal-dim); color:var(--signal); }
  .finding-body b{
    display:block;
    font-family:'IBM Plex Mono',monospace;
    font-weight:600;
    font-size:14.5px;
    margin-bottom:3px;
  }
  .finding-body span{
    font-size:13.5px;
    color:#A7A69D;
    line-height:1.5;
  }

  /* ---------- PRO UPGRADE ---------- */
  .cta{
    border:1px solid var(--line);
    border-left:2px solid var(--parchment);
    background:var(--graphite);
    border-radius:0px;
    padding:26px 24px;
    margin:0 0 10px;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
  }
  .cta-label{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--parchment);
  }
  .cta-title{
    font-family:'IBM Plex Mono',monospace;
    font-size:24px;
    font-weight:600;
    margin:0;
  }
  .cta-title span{ color:var(--signal); }
  .cta-copy{
    font-size:13.5px;
    line-height:1.6;
    color:#A7A69D;
    max-width:62ch;
    margin:0;
  }
  .cta-btn{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    font-weight:600;
    letter-spacing:0.04em;
    text-transform:uppercase;
    background:var(--graphite);
    color:var(--parchment);
    border:1px solid var(--line);
    text-decoration:none;
    border-radius:0px;
    padding:13px 22px;
    margin-top:6px;
    transition:border-color .15s ease, color .15s ease;
  }
  .cta-btn:hover{ border-color:var(--signal); color:var(--signal); }
  .cta-note{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    color:var(--ash);
  }

  /* ---------- FOOTER ---------- */
  footer{
    padding:26px 0 48px;
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    color:var(--ash);
    letter-spacing:0.02em;
  }

  @media (prefers-reduced-motion: reduce){
    *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; }
  }