.trainer-intro { max-width: 850px; }
.trainer-rules {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: -8px 0 22px;
}
.trainer-rules span {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--panel);
  color: var(--muted);
  font-size: .79rem;
  line-height: 1.35;
}
.trainer-rules strong { display: block; color: var(--text); font-size: .86rem; }
.trainer-shell {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.trainer-topbar {
  display: grid;
  grid-template-columns: repeat(3, minmax(90px, 1fr)) minmax(110px, .9fr);
  border-bottom: 1px solid var(--line);
}
.trainer-stat,
.trainer-timer-stat {
  min-height: 76px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  padding: 16px;
  border-right: 1px solid var(--line);
}
.trainer-timer-stat { border-right: 0; background: #f8f9f3; }
.trainer-stat span,
.trainer-timer-stat span {
  color: var(--muted);
  font-size: .72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .055em;
}
.trainer-stat strong,
.trainer-timer-stat strong { font-size: 1.55rem; letter-spacing: -.04em; }
.trainer-timer-stat em { color: var(--muted); font-size: .72rem; font-style: normal; font-weight: 700; }
.trainer-timer-track { height: 5px; background: #eceee5; }
.trainer-timer-track span { display: block; width: 100%; height: 100%; background: var(--accent); transform-origin: left center; transition: transform .1s linear; }
.trainer-grid {
  display: grid;
  grid-template-columns: minmax(330px, .78fr) minmax(0, 1.22fr);
  min-height: 650px;
}
.trainer-challenge-panel { padding: 24px; border-right: 1px solid var(--line); }
.trainer-plan-panel { padding: 24px; min-width: 0; }
.trainer-round-row,
.trainer-plan-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}
.trainer-round-row h2,
.trainer-plan-head h2 { margin: 0; font-size: 1.22rem; }
.trainer-reset { padding: 8px 11px; white-space: nowrap; }
.trainer-room-size {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 18px;
}
.trainer-room-size > div,
.trainer-condition-list > div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fff;
}
.trainer-room-size span,
.trainer-condition-list span { display: block; color: var(--muted); font-size: .72rem; font-weight: 750; }
.trainer-room-size strong { display: block; margin-top: 4px; font-size: 1.2rem; letter-spacing: -.025em; }
.trainer-center-heading {
  margin-top: 14px;
  padding: 12px 14px 0;
  border-top: 1px solid var(--line);
}
.trainer-center-heading span { display: block; color: var(--text); font-size: .72rem; font-weight: 900; letter-spacing: .055em; }
.trainer-center-heading strong { display: block; margin-top: 3px; color: var(--muted); font-size: .72rem; line-height: 1.35; }
.trainer-condition-list { display: grid; gap: 8px; margin-top: 9px; }
.trainer-condition-list > div {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(150px, 1.1fr);
  gap: 12px;
  align-items: center;
  border-width: 2px;
  transition: border-color .15s ease, background .15s ease;
}
.trainer-condition-list strong { text-align: right; font-size: .9rem; line-height: 1.2; }
.trainer-condition-card.is-tile { border-color: #d9e870; background: #fbfde9; }
.trainer-condition-card.is-grid { border-color: #72796e; background: #f1f3ee; }
.trainer-condition-card.is-tile strong { color: #556100; }
.trainer-condition-card.is-grid strong { color: #1f251e; }
.trainer-condition-list-compact {
  grid-template-columns: 1fr 1fr;
}
.trainer-condition-list-compact > div {
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px;
  padding: 10px 12px;
}
.trainer-condition-list-compact span {
  font-size: .68rem;
  font-weight: 900;
  letter-spacing: .05em;
}
.trainer-condition-list-compact strong {
  font-size: .76rem;
}
.trainer-fixed-note {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  padding: 12px 14px;
  border-radius: 13px;
  background: var(--dark);
  color: #fff;
}
.trainer-fixed-note strong { color: var(--accent); font-size: .78rem; }
.trainer-fixed-note span { text-align: right; font-size: .75rem; color: #d8ddd2; }
.trainer-answer-grid { display: grid; gap: 10px; margin-top: 18px; }
.trainer-answer {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 10px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.trainer-answer-letter {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #fff;
  font-size: 1rem;
  font-weight: 900;
}
.trainer-answer-a .trainer-answer-letter { background: #b5483b; }
.trainer-answer-b .trainer-answer-letter { background: #356da6; }
.trainer-answer-copy { min-width: 0; }
.trainer-answer-copy strong { display: block; font-size: .82rem; line-height: 1.35; }
.trainer-answer-copy small { display: block; margin-top: 3px; color: var(--muted); font-size: .69rem; line-height: 1.35; }
.trainer-answer-input {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--panel);
}
.trainer-answer-input:focus-within { outline: 3px solid var(--accent-soft); border-color: #9da74b; }
.trainer-answer-input input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  padding: 11px 0;
  color: var(--text);
  font: inherit;
  font-weight: 800;
}
.trainer-answer-input input:disabled { color: #9b9e96; }
.trainer-answer-input span { color: var(--muted); font-size: .78rem; font-weight: 750; }
.trainer-input-help { margin: 9px 0 0; color: var(--muted); font-size: .72rem; }
.trainer-actions { margin-top: 16px; }
.trainer-actions .primary-button { width: 100%; min-height: 48px; }
.trainer-feedback {
  margin-top: 14px;
  padding: 14px;
  border-radius: 13px;
  border: 1px solid var(--line);
  font-size: .79rem;
  line-height: 1.5;
}
.trainer-feedback strong { display: block; margin-bottom: 4px; font-size: .94rem; }
.trainer-feedback.is-correct { background: #f3f7d8; border-color: #d7e77d; }
.trainer-feedback.is-wrong { background: #fff4f1; border-color: #efc8bf; }
.trainer-feedback .trainer-result-line { margin-top: 6px; font-weight: 800; }
.trainer-feedback .trainer-explain { margin-top: 8px; color: #555b4f; }
.trainer-canvas-wrap {
  margin-top: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fbfcf8;
}
.trainer-svg { display: block; width: 100%; height: auto; min-height: 430px; }
.trainer-room { fill: #fff; stroke: #242922; stroke-width: 3; }
.trainer-center { stroke: #c8ccc3; stroke-width: 1.5; stroke-dasharray: 7 7; }
.trainer-center-tile-patch {
  fill: #f7fadf;
  stroke: #d9e49a;
  stroke-width: 1.25;
}
.trainer-center-tile-line {
  stroke: #bdc97a;
  stroke-width: 1.7;
}
.trainer-main { stroke: #1f251e; stroke-width: 3.2; }
.trainer-cross { stroke: #9ca398; stroke-width: 1.6; }
.trainer-overall-dim { stroke: #686e64; stroke-width: 1.25; }
.trainer-overall-text { fill: #343a32; font-size: 17px; font-weight: 800; }
.trainer-wall-label { fill: #636960; font-size: 13px; font-weight: 850; letter-spacing: .08em; }
.trainer-start-box { fill: #1f251e; }
.trainer-start-text { fill: #e7f449; font-size: 12px; font-weight: 900; letter-spacing: .06em; }
.trainer-a-line { stroke: #b5483b; fill: none; stroke-width: 3; }
.trainer-b-line { stroke: #356da6; fill: none; stroke-width: 3; }
.trainer-a-fill { fill: #b5483b; }
.trainer-b-fill { fill: #356da6; }
.trainer-ab-text { fill: #fff; font-size: 16px; font-weight: 900; text-anchor: middle; dominant-baseline: central; }
.trainer-ab-value { font-size: 14px; font-weight: 900; }
.trainer-rout-dot { fill: #b5483b; stroke: #fff; stroke-width: 2; }
.trainer-cue-main { stroke: #20261f; stroke-width: 4; }
.trainer-cue-rout { fill: #fff; stroke: #20261f; stroke-width: 3; }
.trainer-cue-label { fill: #343a32; font-size: 11px; font-weight: 900; letter-spacing: .035em; }
.trainer-center-label {
  fill: #30362e;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .03em;
  paint-order: stroke;
  stroke: #fff;
  stroke-width: 5px;
  stroke-linejoin: round;
}
.trainer-plan-caption { fill: #666c62; font-size: 13px; font-weight: 700; }
.trainer-reveal-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}
.trainer-reveal-result {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  min-width: 0;
  padding: 12px 13px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.trainer-reveal-result-a { border-color: #e2b8b1; background: #fff8f6; }
.trainer-reveal-result-b { border-color: #b8cee2; background: #f6faff; }
.trainer-reveal-letter {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 900;
}
.trainer-reveal-result-a .trainer-reveal-letter { background: #b5483b; }
.trainer-reveal-result-b .trainer-reveal-letter { background: #356da6; }
.trainer-reveal-result strong {
  display: block;
  font-size: 1.42rem;
  letter-spacing: -.035em;
  line-height: 1;
}
.trainer-reveal-result-a strong { color: #963a31; }
.trainer-reveal-result-b strong { color: #2e5e90; }
.trainer-reveal-result small,
.trainer-reveal-result em {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: .68rem;
  line-height: 1.35;
  font-style: normal;
}
.trainer-reveal-result em { font-weight: 800; }
.trainer-ab-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 13px;
  color: var(--muted);
  font-size: .74rem;
  font-weight: 720;
}
.trainer-ab-legend span { display: inline-flex; align-items: center; gap: 7px; }
.trainer-ab-legend i {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 7px;
  color: #fff;
  font-style: normal;
  font-weight: 900;
}
.trainer-a-key i { background: #b5483b; }
.trainer-b-key i { background: #356da6; }
.trainer-plan-note { margin: 10px 0 0; color: var(--muted); font-size: .74rem; line-height: 1.5; }
.trainer-shell + .resource-inline-callout { margin-top: 22px; }
.trainer-mobile-context,
.trainer-mobile-play { display: none; }

@media (max-width: 920px) {
  .trainer-grid { grid-template-columns: 1fr; }
  .trainer-challenge-panel { border-right: 0; border-bottom: 1px solid var(--line); }
  .trainer-plan-panel { padding-top: 20px; }
}

@media (max-width: 680px) {
  .trainer-rules {
    grid-template-columns: 1fr 1fr;
    gap: 7px;
    margin-bottom: 14px;
  }
  .trainer-rules span { padding: 9px 10px; font-size: .7rem; }
  .trainer-rules strong { font-size: .78rem; }

  .trainer-shell { border-radius: 15px; }
  .trainer-topbar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    background: var(--panel);
  }
  .trainer-stat,
  .trainer-timer-stat {
    min-height: 49px;
    gap: 3px;
    padding: 8px 4px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  .trainer-timer-stat { order: -1; border-right: 1px solid var(--line); }
  .trainer-stat:nth-child(3) { border-right: 0; }
  .trainer-stat span,
  .trainer-timer-stat span { font-size: .57rem; letter-spacing: .045em; }
  .trainer-stat strong,
  .trainer-timer-stat strong { font-size: 1.15rem; line-height: 1; }
  .trainer-timer-stat em { display: none; }
  .trainer-timer-track { height: 4px; }

  .trainer-grid { display: block; min-height: 0; }
  .trainer-challenge-panel { display: none; }
  .trainer-plan-panel { padding: 10px 10px 12px; }
  .trainer-plan-head { display: none; }

  .trainer-mobile-reset {
    display: block;
    width: fit-content;
    margin: 7px auto 0;
    border: 0;
    background: transparent;
    color: var(--muted);
    padding: 5px 8px;
    font: inherit;
    font-size: .65rem;
    font-weight: 800;
    text-decoration: underline;
    text-underline-offset: 2px;
    cursor: pointer;
  }

  .trainer-canvas-wrap {
    margin-top: 0;
    border-radius: 12px;
  }
  .trainer-svg {
    width: 100%;
    height: auto;
    min-height: 0;
  }
  .trainer-overall-text { font-size: 25px; }
  .trainer-wall-label { font-size: 18px; }
  .trainer-start-text { font-size: 16px; }
  .trainer-ab-text { font-size: 21px; }
  .trainer-cue-label { font-size: 15px; }
  .trainer-plan-caption { display: none; }

  .trainer-mobile-play {
    display: block;
    margin-top: 8px;
  }
  .trainer-mobile-answer-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 7px;
  }
  .trainer-mobile-answer {
    min-width: 0;
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 7px;
    align-items: center;
    padding: 8px;
    border: 2px solid var(--line);
    border-radius: 12px;
    background: #fff;
    text-align: left;
    font: inherit;
    cursor: pointer;
    transition: border-color .12s ease, background .12s ease, box-shadow .12s ease;
  }
  .trainer-mobile-answer:disabled { cursor: default; opacity: .62; }
  .trainer-mobile-answer:disabled.is-correct,
  .trainer-mobile-answer:disabled.is-wrong { opacity: 1; }
  .trainer-mobile-answer:not(:disabled).is-selected { box-shadow: 0 0 0 3px var(--accent-soft); }
  .trainer-mobile-answer-a.is-selected { border-color: #b5483b; background: #fff8f6; }
  .trainer-mobile-answer-b.is-selected { border-color: #356da6; background: #f6faff; }
  .trainer-mobile-answer.is-correct { border-color: #8e9b2c; background: #f7fadf; }
  .trainer-mobile-answer.is-wrong { border-color: #d27d70; background: #fff4f1; }
  .trainer-mobile-answer-letter {
    width: 29px;
    height: 29px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    color: #fff;
    font-size: .86rem;
    font-weight: 900;
  }
  .trainer-mobile-answer-a .trainer-mobile-answer-letter { background: #b5483b; }
  .trainer-mobile-answer-b .trainer-mobile-answer-letter { background: #356da6; }
  .trainer-mobile-answer-text { min-width: 0; }
  .trainer-mobile-answer-text small {
    display: block;
    overflow: hidden;
    color: var(--muted);
    font-size: .56rem;
    font-weight: 750;
    line-height: 1.15;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .trainer-mobile-answer-text strong {
    display: block;
    margin-top: 2px;
    color: var(--text);
    font-size: 1.03rem;
    line-height: 1;
    letter-spacing: -.025em;
  }
  .trainer-mobile-answer-text em {
    display: block;
    min-height: .65rem;
    margin-top: 2px;
    color: var(--muted);
    font-size: .54rem;
    font-style: normal;
    font-weight: 750;
    line-height: 1.15;
  }

  .trainer-mobile-pad {
    margin-top: 7px;
    padding: 7px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #f8f9f3;
    transition: opacity .12s ease;
  }
  .trainer-mobile-pad.is-disabled { opacity: .48; pointer-events: none; }
  .trainer-mobile-pad-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 5px;
    padding: 0 2px;
  }
  .trainer-mobile-pad-heading span {
    color: var(--text);
    font-size: .58rem;
    font-weight: 900;
    letter-spacing: .055em;
  }
  .trainer-mobile-pad-heading small { color: var(--muted); font-size: .55rem; }
  .trainer-mobile-whole-pad {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 5px;
    padding: 1px;
  }
  .trainer-mobile-whole-pad button,
  .trainer-mobile-fraction-pad button {
    border: 1px solid #cfd3ca;
    background: #fff;
    color: var(--text);
    font: inherit;
    font-weight: 850;
    cursor: pointer;
  }
  .trainer-mobile-whole-pad button {
    width: 100%;
    height: 35px;
    border-radius: 9px;
    font-size: .7rem;
  }
  .trainer-mobile-whole-pad button[data-action] {
    color: var(--muted);
    font-size: .62rem;
  }
  .trainer-mobile-fraction-heading { margin-top: 2px; }
  .trainer-mobile-fraction-pad {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 4px;
  }
  .trainer-mobile-fraction-pad button {
    min-width: 0;
    height: 33px;
    padding: 0 2px;
    border-radius: 8px;
    font-size: .62rem;
  }
  .trainer-mobile-whole-pad button.is-selected,
  .trainer-mobile-fraction-pad button.is-selected {
    border-color: #778116;
    background: var(--accent);
    color: #1f251e;
  }

  .trainer-mobile-feedback {
    margin-top: 7px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 11px;
    font-size: .68rem;
    line-height: 1.35;
  }
  .trainer-mobile-feedback.is-correct { border-color: #d7e77d; background: #f3f7d8; }
  .trainer-mobile-feedback.is-wrong { border-color: #efc8bf; background: #fff4f1; }
  .trainer-mobile-feedback strong { font-size: .74rem; }
  .trainer-mobile-feedback details { margin-top: 4px; }
  .trainer-mobile-feedback summary { cursor: pointer; font-weight: 850; }
  .trainer-mobile-feedback .trainer-explain { margin-top: 5px; color: #555b4f; }
  .trainer-mobile-primary {
    width: 100%;
    min-height: 44px;
    margin-top: 7px;
  }

  .trainer-reveal-results,
  .trainer-ab-legend,
  .trainer-plan-note { display: none !important; }
}

@media (max-width: 440px) {
  .trainer-mobile-context-main { gap: 3px 8px; }
  .trainer-mobile-context-main span { font-size: .54rem; }
  .trainer-mobile-context-main strong { font-size: .62rem; }
  .trainer-mobile-answer { grid-template-columns: 27px minmax(0, 1fr); padding: 7px 6px; }
  .trainer-mobile-answer-letter { width: 27px; height: 27px; }
  .trainer-mobile-answer-text strong { font-size: .96rem; }
  .trainer-mobile-fraction-pad button { font-size: .58rem; }
}