:root{--paper:#fbfbf9;--ink:#12151a;--mute:#5d646e;--line:#d6dae0;--signal:#1d4ed8;--band:#e3e8f2;--card:#ffffff;--grid:rgba(18,21,26,.045)}
@media(prefers-color-scheme:dark){:root{--paper:#0e1116;--ink:#e9ecef;--mute:#9aa3ad;--line:#2a3038;--signal:#6b9cff;--band:#1c2431;--card:#141920;--grid:rgba(233,236,239,.05)}}
*{box-sizing:border-box}
html{font:17px/1.55 "IBM Plex Sans",-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;background:var(--paper);color:var(--ink)}
body{margin:0;padding:0 1.1rem;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
main{max-width:38rem;margin:0 auto;padding:2.5rem 0 5rem}
h1,h2,h3{font-weight:600;line-height:1.2;letter-spacing:-.015em}
h1{font-size:2rem;margin:.2em 0 .5em}
h2{font-size:1.3rem;margin:2em 0 .5em}
p{margin:.7em 0}
a{color:var(--signal)}
.mono,.readout,.anchors,.axislabels,.stat b,.ncount,code{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
.mark{font-size:2.6rem;line-height:1;color:var(--signal);display:block;margin-bottom:.4rem}
.mute{color:var(--mute)}
.small{font-size:.88rem}
nav{display:flex;gap:1.4rem;font-size:.9rem;margin-bottom:2.5rem}
nav.split{justify-content:space-between}
nav a{color:var(--mute);text-decoration:none}
nav a:hover{color:var(--signal)}
hr{border:0;border-top:1px solid var(--line);margin:2.2rem 0}
button,.btn{font:inherit;font-size:1rem;background:var(--ink);color:var(--paper);border:0;border-radius:.3rem;padding:.7rem 1.2rem;cursor:pointer}
button:disabled{opacity:.35;cursor:default}
button.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
input[type=email],input[type=text],select{font:inherit;font-size:1rem;padding:.55rem .7rem;border:1px solid var(--line);border-radius:.3rem;background:var(--card);color:var(--ink);width:100%}
label.chk{display:flex;gap:.6rem;align-items:flex-start;margin:.8rem 0}
label.chk input{margin-top:.35rem;accent-color:var(--signal)}
.card{background:var(--card);border:1px solid var(--line);border-radius:.4rem;padding:1.2rem 1.3rem;margin:1.2rem 0}
footer{max-width:38rem;margin:0 auto;padding:1.5rem 0 3rem;font-size:.85rem;color:var(--mute);border-top:1px solid var(--line)}
/* instrument */
.trial{min-height:60vh;display:flex;flex-direction:column;justify-content:center}
.sentence{font-size:1.7rem;line-height:1.3;margin:0 0 .3em}
.sentence em{font-style:normal;color:var(--signal);border-bottom:2px solid var(--signal)}
.readout{font-size:1.4rem;min-height:2.2em;margin:.6em 0 .2em}
.readout.idle{color:var(--mute);font-size:1rem}
.slider{width:100%;margin:.4rem 0 0;-webkit-appearance:none;appearance:none;height:2.6rem;background:transparent;touch-action:pan-y}
.slider::-webkit-slider-runnable-track{height:2px;background:var(--ink);border-radius:0}
.slider::-moz-range-track{height:2px;background:var(--ink)}
.slider::-webkit-slider-thumb{-webkit-appearance:none;width:32px;height:32px;border-radius:50%;background:var(--signal);margin-top:-15px;border:3px solid var(--paper);box-shadow:0 1px 3px rgba(0,0,0,.35)}
.slider::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:var(--signal);border:3px solid var(--paper)}
.slider.untouched::-webkit-slider-thumb{opacity:.3}
.slider.untouched::-moz-range-thumb{opacity:.3}
.anchors{display:flex;justify-content:space-between;font-size:.7rem;color:var(--mute);margin-top:.15rem}
.anchors span{border-left:1px solid var(--line);padding-left:.15rem}
.progress{height:2px;background:var(--line);margin-bottom:2rem}
.progress i{display:block;height:100%;background:var(--signal);transition:width .2s}
.row{display:flex;gap:.8rem;align-items:center;margin-top:1.4rem}
/* result card */
.dict{margin:1rem 0}
.dict .w{display:grid;grid-template-columns:7.2rem 1fr;align-items:center;gap:.6rem;padding:.35rem 0;font-size:.95rem}
.dict .w .name{text-align:right;color:var(--mute)}
.axis{position:relative;height:1.3rem;border-left:1px solid var(--line);border-right:1px solid var(--line)}
.axis .band{position:absolute;top:.35rem;height:.6rem;background:var(--band)}
.axis .med{position:absolute;top:.2rem;width:1px;height:.9rem;background:var(--mute)}
.axis .you{position:absolute;top:.15rem;width:1rem;height:1rem;border-radius:50%;background:var(--signal);transform:translateX(-50%);border:2px solid var(--card)}
.axislabels{display:grid;grid-template-columns:7.2rem 1fr;gap:.6rem}
.axislabels div{display:flex;justify-content:space-between;font-size:.68rem;color:var(--mute)}
.headline{font-size:1.3rem;line-height:1.3;margin:.4em 0}
.stat{display:flex;gap:1.5rem;flex-wrap:wrap;margin:1rem 0}
.stat b{display:block;font-size:1.4rem;font-weight:500}
.stat span{font-size:.82rem;color:var(--mute)}