:root {
  --ink: #17201f;
  --muted: #66706e;
  --paper: #fffefb;
  --canvas: #f1f4f1;
  --line: #d9dfdc;
  --accent: #136f63;
  --accent-dark: #0c554c;
  --accent-soft: #e5f3ef;
  --warning: #9b4b25;
  --warning-soft: #fff0e8;
  --radius: 13px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--canvas); color: var(--ink); line-height: 1.5; }
h1, h2 { line-height: 1.18; }
h2 { font-size: 1.15rem; margin: 0 0 .5rem; }
.muted { color: var(--muted); }
.fineprint { color: var(--muted); font-size: .82rem; }
.hidden { display: none !important; }
.eyebrow, .step-label {
  color: var(--accent);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 3px 14px rgba(22, 47, 42, .055);
  padding: 1.45rem;
}
.center-page { min-height: 100vh; display: grid; place-items: center; padding: 2rem 1rem; }
.card-narrow { max-width: 590px; width: 100%; }
.instruction-card { max-width: 760px; width: 100%; }
.card-narrow h1 { margin: .35rem 0 .75rem; }
.instruction-card h1 { margin: .35rem 0 .75rem; }
.instruction-grid { display: grid; gap: .7rem; grid-template-columns: 1fr 1fr; margin: 1rem 0; }
.instruction-grid > div { border: 1px solid var(--line); border-radius: 10px; padding: .8rem; }
.instruction-grid p { color: var(--muted); font-size: .9rem; margin: .25rem 0 0; }
.practice-form { display: grid; gap: .8rem; margin-top: 1rem; }
.practice-item legend { font-family: ui-serif, Georgia, serif; font-weight: 650; }
.notice { background: var(--accent-soft); border-radius: 10px; padding: .8rem 1rem; margin: 1rem 0; }
.error, .error-banner { color: #8b302d; font-weight: 650; }
.error-banner { background: #fff0ef; border: 1px solid #efcfcc; padding: .8rem 1rem; border-radius: 10px; }

.stack-form { display: grid; gap: 1rem; margin-top: 1.2rem; }
.stack-form > label { font-weight: 650; }
input[type="text"], input[type="password"], select, textarea {
  width: 100%;
  border: 1px solid #bfc9c5;
  border-radius: 9px;
  background: white;
  color: var(--ink);
  font: inherit;
  padding: .65rem .75rem;
  margin-top: .28rem;
}
textarea { resize: vertical; }
fieldset { border: 1px solid var(--line); border-radius: 10px; padding: .8rem 1rem; }
legend { font-weight: 700; padding: 0 .3rem; }
.radio-line, .consent-line { display: flex; gap: .55rem; align-items: flex-start; margin: .4rem 0; font-weight: 450 !important; }

.btn {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: white;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: .65rem 1rem;
}
.btn-primary { background: var(--accent); color: white; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dark); }
.btn:disabled { opacity: .48; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-secondary { background: white; }
.btn-flag { color: var(--warning); border-color: #e4c2b4; }
.btn-flag-confirm { background: var(--warning); color: white; margin-top: .7rem; }
.inline-form { display: inline; }
.link-button { border: 0; background: none; color: var(--muted); text-decoration: underline; cursor: pointer; }

.topbar {
  align-items: center;
  background: rgba(255, 254, 251, .94);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  padding: .8rem 1.2rem;
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-right { align-items: center; display: flex; gap: .9rem; font-size: .86rem; }
.phase-chip, .condition-chip {
  background: var(--accent-soft);
  border-radius: 999px;
  color: var(--accent-dark);
  display: inline-block;
  font-size: .75rem;
  font-weight: 750;
  margin-left: .45rem;
  padding: .18rem .52rem;
}
.condition-chip { margin: 0 0 1rem; }

.page { display: grid; gap: 1rem; margin: 0 auto; max-width: 920px; padding: 1.25rem 1rem 5rem; }
.task-card { border-top: 4px solid var(--accent); }
.qa-block + .qa-block { border-top: 1px solid var(--line); margin-top: 1rem; padding-top: 1rem; }
.qa-label { color: var(--muted); font-size: .75rem; font-weight: 800; letter-spacing: .06em; margin-bottom: .3rem; text-transform: uppercase; }
.qa-text { font-family: ui-serif, Georgia, serif; font-size: 1.08rem; white-space: pre-wrap; }
.audio-block { margin-top: 1rem; }
.audio-block audio { display: block; margin-bottom: .3rem; width: 100%; }

.form-section + .form-section { border-top: 1px solid var(--line); margin-top: 1.35rem; padding-top: 1.35rem; }
.form-section h2 { margin-top: .35rem; }
.help { color: var(--muted); margin: .3rem 0 .8rem; }
.choice-list { display: grid; gap: .55rem; }
.choice-card {
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  gap: .65rem;
  padding: .7rem .8rem;
}
.choice-card:has(input:checked), .pill-radio:has(input:checked) { background: var(--accent-soft); border-color: var(--accent); }
.choice-card small { color: var(--muted); display: block; margin-top: .12rem; }
.scale-field { display: grid; gap: .45rem; margin-top: 1rem; }
.scale-field output { background: var(--accent); border-radius: 6px; color: white; font-weight: 800; margin: 0 .4rem; padding: .08rem .4rem; }
input[type="range"] { accent-color: var(--accent); width: 100%; }
.field-group { margin-top: 1rem; }
.field-title { display: block; font-weight: 750; margin-bottom: .5rem; }
.option-row { display: flex; flex-wrap: wrap; gap: .48rem; }
.pill-radio { border: 1px solid var(--line); border-radius: 999px; cursor: pointer; padding: .45rem .75rem; }
.pill-radio input { margin-right: .36rem; }

.descriptor-grid { overflow-x: auto; }
.descriptor-head, .descriptor-row {
  align-items: center;
  display: grid;
  gap: .25rem;
  grid-template-columns: minmax(145px, 1fr) repeat(6, 52px);
  min-width: 520px;
}
.descriptor-head { color: var(--muted); font-size: .67rem; text-align: center; }
.descriptor-row { border-top: 1px solid #edf0ee; padding: .48rem 0; }
.descriptor-row label { cursor: pointer; text-align: center; }
.descriptor-row label span { border-radius: 7px; display: inline-block; font-size: .78rem; padding: .24rem .38rem; }
.descriptor-row input { position: absolute; opacity: 0; }
.descriptor-row input:checked + span { background: var(--accent); color: white; font-weight: 800; }

.actions { border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.4rem; padding-top: 1.1rem; }
.flag-panel { background: var(--warning-soft); border: 1px solid #e4c2b4; border-radius: 10px; margin-top: 1rem; padding: 1rem; }

@media (max-width: 680px) {
  .topbar { align-items: flex-start; gap: .5rem; }
  .topbar-right { align-items: flex-end; flex-direction: column; gap: .2rem; }
  .card { padding: 1rem; }
  .qa-text { font-size: 1rem; }
  .instruction-grid { grid-template-columns: 1fr; }
}