:root {
  --ink: #17171C;
  --paper: #FBF9F9;
  --muted: #888888;
  --line: rgba(251,249,249,.17);
  --sans: "Inter", ui-sans-serif, system-ui, sans-serif;
  --serif: "Times New Roman", Georgia, serif;
  --ease: cubic-bezier(.16,1,.3,1);
}
* { box-sizing: border-box; }
html { background: var(--ink); }
body { margin: 0; min-height: 100svh; overflow-x: hidden; color: var(--paper); background: var(--ink); font-family: var(--sans); }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .035; mix-blend-mode: overlay; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.45'/%3E%3C/svg%3E"); }
a { color: inherit; }
button, input, textarea { font: inherit; }
:focus-visible { outline: 2px solid var(--paper); outline-offset: 5px; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 20; padding: 10px 14px; color: var(--ink); background: var(--paper); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.form-main { position: relative; min-height: 100svh; display: grid; place-items: center; padding: 80px 24px 70px; overflow: clip; }
form { position: relative; z-index: 2; width: min(820px, 100%); }
.honeypot { position: absolute; left: -9999px; }
.form-step { display: none; min-width: 0; padding: 0; border: 0; }
.no-js .form-step { display: block; margin-bottom: 80px; }
.form-step.is-active { display: block; }
.form-step.is-entering { animation: stepIn .5s var(--ease) both; }
#diagnosticForm.dir-back .form-step.is-entering { animation-name: stepInBack; }
.form-step legend { display: block; width: 100%; margin: 0 0 58px; padding: 0; font-size: clamp(36px, 5.8vw, 72px); line-height: 1.03; letter-spacing: -.055em; font-weight: 500; }
.form-step legend span { display: block; margin-bottom: .15em; color: var(--muted); font-family: var(--serif); font-style: italic; font-weight: 400; }
.form-step legend b { color: var(--paper); font-weight: 400; }
.field-label { display: block; margin-bottom: 12px; color: var(--muted); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.text-input { width: 100%; padding: 16px 2px 18px; border: 0; border-bottom: 1px solid var(--line); border-radius: 0; outline: 0; color: var(--paper); background: transparent; font-size: clamp(22px, 3vw, 34px); transition: border-color .25s; }
.text-input::placeholder { color: rgba(255,255,255,.25); }
.text-input:focus { border-color: var(--paper); }
.text-area { resize: vertical; min-height: 150px; font-size: clamp(18px, 2.2vw, 26px); line-height: 1.5; }
.field-hint { margin: 13px 0 0; color: var(--muted); font-size: 12px; }
.field-error { min-height: 20px; margin: 10px 0 0; color: #ffd2d2; font-size: 12px; }
.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.choice { position: relative; display: block; cursor: pointer; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span { display: flex; min-height: 68px; align-items: center; padding: 16px 18px; border: 1px solid var(--line); color: #d7d7da; transition: border-color .2s, background .2s, color .2s, transform .2s; }
.choice:hover span { border-color: rgba(255,255,255,.45); transform: translateY(-2px); }
.choice input:focus-visible + span { outline: 2px solid var(--paper); outline-offset: 3px; }
.choice input:checked + span { color: var(--ink); background: var(--paper); border-color: var(--paper); }
.choice-grid-compact { grid-template-columns: repeat(3, 1fr); }
.conditional-field { margin-top: 18px; max-width: 420px; animation: stepIn .35s var(--ease) both; }
.text-input-compact { font-size: clamp(18px, 2.4vw, 24px); padding: 12px 2px 14px; }

.form-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; margin-top: 54px; }
.action-primary {
  display: inline-flex; align-items: center; gap: 30px; min-height: 48px; padding: 0 22px;
  border: 1px solid var(--paper); color: var(--ink); background: var(--paper); font-weight: 600; cursor: pointer;
}
.form-actions-secondary { display: flex; gap: 24px; }
.action-secondary, .action-skip {
  border: none; background: none; padding: 0; min-height: auto;
  color: var(--muted); font-size: 13px; text-decoration: underline; text-underline-offset: 4px; cursor: pointer;
  transition: color .2s;
}
.action-secondary:hover, .action-skip:hover { color: var(--paper); }
#submitButton { display: none; }
#backButton { visibility: hidden; }
#skipButton { display: none; }
.keyboard-hint { margin: 22px 0 0; color: var(--muted); font-size: 11px; }
kbd { padding: 3px 6px; border: 1px solid var(--line); font-family: inherit; }
.form-status { min-height: 20px; margin-top: 12px; color: var(--muted); font-size: 12px; }
@keyframes stepIn { from { opacity: 0; transform: translateX(52px); } to { opacity: 1; transform: translateX(0); } }
@keyframes stepInBack { from { opacity: 0; transform: translateX(-52px); } to { opacity: 1; transform: translateX(0); } }
@media (max-width: 720px) {
  .form-main { padding: 60px 16px 45px; align-items: start; }
  form { padding-top: 9vh; }
  .form-step legend { margin-bottom: 42px; font-size: clamp(34px, 10vw, 50px); }
  .choice-grid, .choice-grid-compact { grid-template-columns: 1fr; }
  .choice span { min-height: 58px; }
  .form-actions { margin-top: 42px; }
  .action-primary { width: 100%; justify-content: space-between; }
  .keyboard-hint { display: none; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }