:root{
  --sand:#f7f5ef; --dune:#e0dac3; --dune-deep:#cbc3a6; --ink:#242320; --muted:#5f5d57;
  --paper:#fffdf8; --error:#9b2c1c;
  --display:"Syne",system-ui,sans-serif; --mono:"IBM Plex Mono",ui-monospace,monospace;
  --rail:220px; --gap:clamp(20px,4vw,56px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--sand);color:var(--ink);font:400 17px/1.6 var(--display);-webkit-font-smoothing:antialiased}
a{color:inherit}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.skip{position:fixed;left:16px;top:-60px;background:var(--ink);color:var(--sand);padding:10px 14px;z-index:20}
.skip:focus{top:12px}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

.top{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--gap);background:color-mix(in srgb,var(--sand) 92%,transparent);backdrop-filter:blur(8px)}
.logo img{display:block;height:24px;width:auto}
.save{font:400 12px/1 var(--mono);color:var(--muted);letter-spacing:.02em}
.progress{position:sticky;top:60px;z-index:10;height:2px;background:var(--dune)}
.progress span{display:block;height:100%;width:0;background:var(--ink);transition:width .4s ease}

main{padding:0 var(--gap)}
.eyebrow{font:500 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 18px}
h1{font-weight:500;font-size:clamp(40px,7vw,88px);line-height:.98;letter-spacing:-.035em;margin:0 0 28px;max-width:12ch}
h2{font-weight:500;font-size:clamp(28px,3.4vw,40px);line-height:1.05;letter-spacing:-.025em;margin:0 0 10px}
.lede{font-size:clamp(18px,1.6vw,21px);line-height:1.5;max-width:40ch;margin:0 0 32px}

.hero{max-width:1200px;margin:0 auto;padding:clamp(48px,9vw,120px) 0 clamp(40px,6vw,72px);border-bottom:1px solid var(--dune-deep)}
.meta{list-style:none;padding:0;margin:0 0 36px;display:flex;flex-wrap:wrap;gap:8px 28px;font:400 13px/1.5 var(--mono);color:var(--muted)}
.meta li::before{content:"\2014\00a0";}
.group-note{max-width:58ch;margin:0;padding:18px 20px;background:var(--dune);font-size:15px;line-height:1.55}
.group-note strong{font-weight:600}

.layout{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:var(--rail) minmax(0,1fr);gap:var(--gap)}
.rail{position:relative}
.rail ol{position:sticky;top:104px;list-style:none;margin:56px 0 0;padding:0;font-size:14px}
.rail a{display:flex;gap:12px;align-items:baseline;padding:7px 0;text-decoration:none;color:var(--muted);transition:color .2s}
.rail a .n{font:400 11px/1 var(--mono);width:20px}
.rail a:hover,.rail a.active{color:var(--ink)}
.rail a.active{font-weight:600}
.rail a.done::after{content:"\2713";font:400 11px/1 var(--mono);margin-left:auto;color:var(--ink)}

form{max-width:680px;padding-bottom:40px}
.hp{position:absolute;left:-9999px}
.sec{padding:56px 0 24px;border-bottom:1px solid var(--dune-deep)}
.sec-intro{color:var(--muted);margin:0 0 32px;max-width:52ch}

.q{margin:0 0 30px;border:0;padding:0;min-width:0}
label,legend,.scale-head{display:block;font-weight:500;font-size:17px;line-height:1.4;margin:0 0 10px;padding:0}
.req{font:400 11px/1 var(--mono);color:var(--muted);letter-spacing:.04em;margin-left:8px;text-transform:uppercase;vertical-align:2px}
.hint{font-size:14px;color:var(--muted);margin:-4px 0 12px;line-height:1.5}
input[type=text],input[type=email],textarea{width:100%;font:inherit;font-size:16px;color:var(--ink);background:var(--paper);
  border:1px solid var(--dune-deep);border-radius:2px;padding:12px 14px;transition:border-color .15s,box-shadow .15s}
textarea{resize:vertical;min-height:88px;line-height:1.55}
input:hover,textarea:hover{border-color:var(--muted)}
input:focus,textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 1px var(--ink)}
[aria-invalid=true]{border-color:var(--error)!important;box-shadow:0 0 0 1px var(--error)!important}
input[type=file]{font:400 14px/1.4 var(--mono);color:var(--muted)}
input[type=file]::file-selector-button{font:500 14px var(--display);background:var(--paper);border:1px solid var(--dune-deep);padding:9px 14px;margin-right:14px;cursor:pointer;color:var(--ink)}

.opts{display:flex;flex-wrap:wrap;gap:8px}
.opt{position:relative;margin:0;font-weight:400;font-size:15px}
.opt input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.opt span{display:block;padding:9px 14px;border:1px solid var(--dune-deep);background:var(--paper);border-radius:2px;transition:background .15s,color .15s,border-color .15s;cursor:pointer}
.opt:hover span{border-color:var(--muted)}
.opt input:checked+span{background:var(--ink);border-color:var(--ink);color:var(--sand)}
.opt input:focus-visible+span{outline:2px solid var(--ink);outline-offset:2px}

.scale{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) 52px;align-items:center;gap:16px;border:0;margin:0;padding:12px 0;border-top:1px solid var(--dune)}
.scale-head+.hint+.scale,.scale-head+.scale{border-top:0}
.scale:last-of-type{border-bottom:1px solid var(--dune)}
.scale+.q{margin-top:30px}
.end{font-size:15px}
.end-r{text-align:left}
.scale .end:first-of-type{text-align:right}
.dots{display:flex;align-items:center;gap:6px;position:relative}
.dots::before{content:"";position:absolute;left:10px;right:10px;top:50%;height:1px;background:var(--dune-deep)}
.dot{position:relative;margin:0;width:24px;height:24px;display:grid;place-items:center;cursor:pointer}
.dot input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.dot span{width:14px;height:14px;border-radius:50%;background:var(--sand);border:1px solid var(--muted);transition:transform .15s,background .15s}
.dot:hover span{transform:scale(1.2)}
.dot input:checked+span{background:var(--ink);border-color:var(--ink);transform:scale(1.3)}
.dot input:focus-visible+span{outline:2px solid var(--ink);outline-offset:3px}
.clear{font:400 11px/1 var(--mono);background:none;border:0;color:var(--muted);text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:6px 0;justify-self:start}

.submit-sec{border-bottom:0;padding-bottom:0}
.actions{display:flex;flex-wrap:wrap;gap:12px}
button.primary,button.ghost{font:500 16px/1 var(--display);padding:17px 26px;border-radius:2px;cursor:pointer;transition:background .2s,color .2s,transform .1s}
button.primary{background:var(--ink);color:var(--sand);border:1px solid var(--ink)}
button.primary:hover{background:#000}
button.primary[disabled]{opacity:.6;cursor:progress}
button.ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
button.ghost:hover{background:var(--dune)}
button:active{transform:translateY(1px)}
.error{color:var(--error);font-size:15px;margin:0 0 18px;padding:12px 14px;border-left:2px solid var(--error);background:#fbefe9}

.done{max-width:1200px;margin:0 auto;padding:clamp(64px,12vw,160px) 0}
.done:focus{outline:none}

.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:40px var(--gap) 32px;margin-top:64px;border-top:1px solid var(--dune-deep);font:400 12px/1.5 var(--mono);color:var(--muted)}

@media (max-width:900px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .rail{display:none}
  form{max-width:none}
}
@media (max-width:560px){
  body{font-size:16px}
  .top{padding:14px 16px}
  .progress{top:52px}
  main{padding:0 16px}
  .foot{padding:32px 16px}
  .scale{grid-template-columns:1fr 1fr;grid-template-areas:"l r" "d d" "c c";gap:8px 12px;padding:16px 0}
  .scale .end:first-of-type{grid-area:l;text-align:left}
  .end-r{grid-area:r;text-align:right}
  .dots{grid-area:d;justify-content:space-between}
  .dots::before{left:12px;right:12px}
  .dot{width:40px;height:40px}
  .clear{grid-area:c}
  .opt span{padding:10px 14px}
  .actions button{width:100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}