:root{
  --indigo:#2A2D7C;
  --indigo-deep:#1E2060;
  --paper:#FBF9F3;
  --ink:#23222B;
  --ink-soft:#5B5A66;
  --rule:#D9D5C8;
  --top:#B3382C;
  --bar:#8B8FC4;
  --bar-top:#B3382C;
  --chip:#EFECE1;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:'Public Sans',system-ui,sans-serif;
  font-size:15px;
  line-height:1.5;
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
}

/* ---------- banner ---------- */
header{
  background:var(--indigo);
  color:#fff;
  padding:28px 24px 22px;
  border-bottom:6px solid var(--indigo-deep);
}
.banner-inner{max-width:980px;margin:0 auto}
h1{
  font-family:'Bricolage Grotesque',sans-serif;
  font-weight:800;
  font-size:clamp(30px,5vw,46px);
  letter-spacing:-0.01em;
  line-height:1.05;
}
.tagline{
  font-family:'IBM Plex Mono',monospace;
  font-size:13px;
  opacity:.85;
  margin-top:6px;
  min-height:1.5em;
}
.tagline.typing::after{
  content:'▌';
  animation:caret-blink .8s steps(1) infinite;
}
@keyframes caret-blink{50%{opacity:0}}
nav{
  background:var(--indigo-deep);
}
.nav-inner{max-width:980px;margin:0 auto;display:flex}
nav button{
  appearance:none;border:0;background:transparent;color:#C9CBE8;
  font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:16px;
  padding:12px 20px;cursor:pointer;border-bottom:3px solid transparent;
}
nav button:hover{color:#fff}
nav button[aria-selected="true"]{color:#fff;border-bottom-color:var(--top)}
nav button:focus-visible{outline:2px solid #fff;outline-offset:-2px}

main{max-width:980px;margin:0 auto;padding:22px 24px 80px}
.instructions{
  font-size:14px;color:var(--ink-soft);
  border:1px solid var(--rule);background:#fff;
  padding:10px 14px;margin-bottom:22px;
}
.instructions b{color:var(--ink)}

/* ---------- layout ---------- */
.diagnose-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}
@media(max-width:760px){.diagnose-grid{grid-template-columns:1fr}}

/* ---------- ranking ladder ---------- */
.ladder h2, .panel h2{
  font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:18px;
  border-bottom:2px solid var(--ink);padding-bottom:6px;margin-bottom:12px;
  display:flex;justify-content:space-between;align-items:baseline;
}
.ladder h2 .col-label{font-family:'IBM Plex Mono',monospace;font-weight:500;font-size:12px;color:var(--ink-soft)}
#ladder{list-style:none;position:relative}
#ladder li{
  display:grid;grid-template-columns:1fr 64px;align-items:center;
  gap:10px;padding:4px 6px;position:relative;
  will-change:transform;
}
#ladder li .dx-name{
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  position:relative;z-index:1;
}
#ladder li .pct{
  font-family:'IBM Plex Mono',monospace;font-weight:500;font-size:14px;
  text-align:right;font-variant-numeric:tabular-nums;
  position:relative;z-index:1;
}
#ladder li .bar{
  position:absolute;left:0;top:2px;bottom:2px;
  background:var(--chip);z-index:0;
  transition:width .45s cubic-bezier(.22,1,.36,1);
}
#ladder li.rank-1{font-weight:700;color:var(--top)}
#ladder li.rank-1 .bar{background:#F3DBD7}
#ladder li.rank-1 .pct{font-weight:600}
.verdict{
  margin-top:16px;padding:12px 14px;border:2px solid var(--ink);
  font-family:'IBM Plex Mono',monospace;font-size:13px;background:#fff;
}
.verdict b{color:var(--top)}

/* ---------- checkboxes ---------- */
.panel h3{
  font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:15px;
  margin:18px 0 8px;color:var(--indigo);
}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:2px 18px}
.check-grid label{
  display:flex;align-items:center;gap:8px;padding:3px 4px;
  cursor:pointer;user-select:none;font-size:14px;
}
.check-grid label:hover{background:var(--chip)}
.check-grid input{width:15px;height:15px;accent-color:var(--indigo);flex-shrink:0}
.reset-row{margin-top:20px}
.reset-row button, .submit-btn{
  font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:14px;
  background:var(--indigo);color:#fff;border:0;padding:9px 18px;cursor:pointer;
}
.reset-row button:hover, .submit-btn:hover{background:var(--indigo-deep)}
.reset-row button:focus-visible, .submit-btn:focus-visible{outline:2px solid var(--indigo);outline-offset:2px}

/* ---------- submit + about ---------- */
.tabpane{display:none}
.tabpane.active{display:block}
.narrow{max-width:640px}
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:4px}
.field input[type=text],.field textarea{
  width:100%;padding:8px 10px;border:1px solid var(--rule);background:#fff;
  font-family:'Public Sans',sans-serif;font-size:14px;
}
.field textarea{min-height:90px;resize:vertical}
.notice{
  font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--ink-soft);
  border-left:3px solid var(--indigo);padding:8px 12px;margin:14px 0;background:#fff;
}
.about p{margin-bottom:12px;max-width:70ch}
.about h3{font-family:'Bricolage Grotesque',sans-serif;margin:20px 0 8px}
.about code, .about pre{
  font-family:'IBM Plex Mono',monospace;font-size:12.5px;background:#fff;
  border:1px solid var(--rule);
}
.about code{padding:1px 5px}
.about pre{padding:12px;overflow-x:auto;margin:10px 0}
footer{
  border-top:1px solid var(--rule);margin-top:40px;padding-top:14px;
  font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-soft);
}