.tabs {flex-wrap:wrap;gap:12px 28px;}
.trainer {max-width:940px;margin:0 auto;}
.trainer-welcome {display:flex;gap:18px;align-items:center;margin:8px 0 26px;}
.trainer-symbol {display:grid;place-items:center;flex:none;width:68px;height:68px;border-radius:20px;background:#dff1eb;color:#087b72;font-size:42px;}
.trainer-symbol svg {display:block;width:36px;height:36px;}
.trainer-summary-symbol {display:inline-flex;align-items:center;justify-content:center;font-size:54px;color:#087b72;}
.trainer-summary-symbol svg {display:block;width:48px;height:48px;}
.trainer-eyebrow {margin:0 0 4px;font-size:14px;color:#087b72;font-weight:700;}
.trainer-welcome h2 {font-size:32px;margin:0 0 6px;}
.trainer-welcome p:last-child {margin:0;color:var(--muted);font-size:18px;}
.trainer-home-grid {display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:22px;}
.trainer-start-card,.trainer-progress-card {padding:26px;border:1px solid var(--line);border-radius:18px;background:white;min-width:0;}
.trainer-start-card {background:#e9f3ff;border-color:#c5dcf3;}
.trainer h3 {font-size:21px;margin:0 0 14px;}
.trainer-start-card select {display:block;appearance:none;-webkit-appearance:none;height:52px;min-height:52px;width:100%;padding:12px 36px 12px 12px;border:1px solid #8ab3df;border-radius:9px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='12' viewBox='0 0 16 12'%3E%3Cpath d='m2 3 6 6 6-6' fill='none' stroke='%2317324d' stroke-width='2'/%3E%3C/svg%3E") no-repeat right 12px center;color:var(--ink);}
.trainer-start-card>p {font-size:16px;color:var(--muted);margin:16px 0;}
.trainer-start-card .primary {width:100%;}
.trainer .trainer-small {font-size:15px;line-height:1.55;color:var(--muted);}
.trainer-subject-stats {margin:20px 0;display:grid;gap:12px;}
.trainer-subject-stats p {padding:14px 16px;background:#f5f9ff;border:1px solid var(--line);border-radius:10px;font-size:17px;margin:0;}
.trainer-adult-details {margin:20px 0 0;border-top:1px solid var(--line);padding-top:8px;}
.trainer-adult-details p {max-width:760px;font-size:16px;color:var(--muted);}
.trainer-data-controls {border-top:1px solid var(--line);margin-top:22px;padding-top:12px;}
.trainer-data-controls .text-button {padding-left:0;text-decoration:underline;text-underline-offset:3px;}
#trainer-clear-confirm {padding:16px;background:white;border:1px solid var(--line);border-radius:12px;}
#trainer-clear-confirm button {margin:4px 8px 4px 0;}
.trainer-play-top {display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:16px;}
#trainer-play {max-width:680px;margin:0 auto;text-align:center;border:1px solid #c5dcf3;border-radius:20px;padding:22px 28px;background:#e9f3ff;}
#trainer-timer {font-variant-numeric:tabular-nums;font-size:20px;}
#trainer-progress {display:block;width:100%;height:8px;accent-color:#087b72;margin:12px 0 10px;}
#trainer-session-progress {margin:0 0 8px;}
.trainer #trainer-question {font-size:clamp(40px,7vw,58px);margin:22px 0;letter-spacing:-1.5px;line-height:1.2;font-variant-numeric:tabular-nums;}
.trainer-answer-form {display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px;}
#trainer-answer {min-width:0;width:135px;min-height:56px;font-size:30px;text-align:center;padding:6px 12px;border:2px solid #8ab3df;border-radius:9px;background:white;color:var(--ink);}
.trainer-answer-form button {min-height:56px;padding:12px 18px;}
.trainer-feedback {min-height:30px;font-size:18px;line-height:1.5;margin:12px 0;}
.trainer-feedback[data-correct="true"] {color:#087b72;font-weight:600;}
.trainer-keypad {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:250px;max-width:100%;margin:14px auto;}
.trainer-keypad button {min-width:44px;min-height:48px;padding:4px;border:1px solid #bfd7ef;border-radius:9px;background:white;color:var(--ink);font-size:23px;font-weight:600;touch-action:manipulation;user-select:none;-webkit-user-select:none;}
.trainer-keypad button:active {background:#d4e9ff;}
.trainer button:disabled {opacity:.55;cursor:default;}
.trainer-hint {text-align:left;background:white;padding:18px 20px;border:1px solid #a8d4c6;border-left:4px solid #087b72;border-radius:12px;margin:20px 0 0;}
.trainer-hint-top {display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;align-items:center;}
.trainer-hint h3 {font-size:18px;color:#087b72;margin:0;}
#trainer-hint-text {font-size:18px;margin:12px 0 0;white-space:pre-line;}
.trainer-hint-visual {display:flex;flex-wrap:wrap;gap:6px;margin-top:12px;}
.trainer-hint-visual:empty {display:none;}
.trainer-hint-group {display:flex;flex-wrap:wrap;align-content:center;justify-content:center;gap:4px;width:54px;min-height:54px;padding:6px;background:#eaf7f3;border:1px solid #add8d0;border-radius:9px;}
.trainer-hint-dot {width:7px;height:7px;border-radius:50%;background:#087b72;}
.trainer-reassurance {font-size:15px;color:var(--muted);margin:18px 0 0;}
.trainer-paused,.trainer-last-task {font-size:16px;padding:12px 14px;border-radius:10px;background:white;color:var(--ink);}
.trainer-summary {text-align:center;max-width:720px;margin:20px auto;padding:28px;background:#eaf7f3;border:1px solid #add8d0;border-radius:18px;}
.trainer-summary-symbol {font-size:54px;color:#087b72;}
.trainer-summary h2 {font-size:28px;}
.trainer-summary-stats {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:24px 0;}
.trainer-summary-stats p {margin:0;padding:16px 8px;border-radius:12px;background:white;font-size:15px;line-height:1.5;}
.trainer-summary-stats strong {display:block;font-size:30px;color:#087b72;}
.trainer-summary .result-actions {justify-content:center;}
body[data-view="trainer"] .operation-switch,body[data-view="trainer"] .intro,
body[data-view="trainer"] .history-details,body[data-view="trainer"] .help-details,
body[data-view="trainer-session"] header,body[data-view="trainer-session"] footer,
body[data-view="trainer-session"] .tabs,body[data-view="trainer-session"] .operation-switch,
body[data-view="trainer-session"] .intro,body[data-view="trainer-session"] .help-details,
body[data-view="trainer-session"] .history-details {display:none;}
body[data-view="trainer"] .tabs {margin-top:20px;}
body[data-view="trainer-session"] main {padding-top:20px;padding-bottom:24px;}
@media(max-width:1000px) {
  .tabs {display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;}
  .tabs [data-tab="trainer"] {grid-column:1/-1;}
}
@media(max-width:650px) {
  .trainer-home-grid {grid-template-columns:1fr;gap:16px;}
  .trainer-welcome {align-items:flex-start;gap:12px;}
  .trainer-symbol {width:48px;height:48px;font-size:32px;border-radius:14px;}
  .trainer-welcome h2 {font-size:27px;}
  .trainer-welcome p:last-child {font-size:16px;}
  .trainer-start-card,.trainer-progress-card {padding:20px;}
  .trainer-summary {padding:22px 16px;}
  .trainer-summary-stats {gap:8px;}
  .trainer-summary-stats p {padding:12px 4px;font-size:14px;}
  .trainer-summary-stats strong {font-size:27px;}
}
@media(max-width:400px) {
  .tabs {grid-template-columns:repeat(2,minmax(0,1fr));}
  #trainer-play {padding:16px 12px;}
  .trainer-play-top {gap:8px;font-size:14px;}
  .trainer-play-top .text-button {font-size:15px;padding:8px 2px;}
  .trainer-answer-form {gap:8px;}
  #trainer-answer {width:108px;}
  .trainer-answer-form button {padding:10px 12px;}
  .trainer-hint {padding:16px;}
}

.trainer-recommendation {padding:14px 16px;border-left:3px solid #087b72;background:#eaf7f3;border-radius:0 10px 10px 0;font-size:16px;line-height:1.55;}
.trainer-matrix-card {margin:22px 0 0;border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden;}
.trainer-matrix-summary {display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 24px;font-size:19px;font-weight:700;cursor:pointer;list-style:none;background:#f8fbff;}
.trainer-matrix-summary::-webkit-details-marker {display:none;}
.trainer-matrix-badge {display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:#dff1eb;color:#087b72;font-size:14px;font-weight:700;}
.trainer-matrix-body {padding:18px 24px 22px;border-top:1px solid var(--line);}
.trainer-matrix-toolbar {display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}
.trainer-matrix-tabs {display:inline-flex;gap:6px;padding:4px;border-radius:10px;background:#eef4fb;}
.trainer-matrix-tab {min-height:36px;padding:6px 14px;border:0;border-radius:7px;background:transparent;color:var(--ink);font-size:15px;font-weight:600;cursor:pointer;}
.trainer-matrix-tab.active {background:#fff;color:#087b72;box-shadow:0 1px 3px rgba(15,23,42,.1);}
.trainer-matrix-legend {display:flex;flex-wrap:wrap;gap:12px;font-size:14px;color:var(--muted);}
.legend-item {display:inline-flex;align-items:center;gap:6px;}
.legend-dot {width:12px;height:12px;border-radius:4px;display:inline-block;border:1px solid rgba(15,23,42,.15);}
.legend-dot.is-secure,.matrix-cell.is-secure {background:#d1fae5;color:#065f46;border-color:#6ee7b7;}
.legend-dot.is-building,.matrix-cell.is-building {background:#dff1eb;color:#087b72;border-color:#88d4c3;}
.legend-dot.is-uncertain,.matrix-cell.is-uncertain {background:#fef3c7;color:#92400e;border-color:#fcd34d;}
.legend-dot.is-new,.matrix-cell.is-new {background:#f8fafc;color:#334155;border-color:#cbd5e1;}
.trainer-matrix-grid {display:grid;grid-template-columns:34px repeat(10,minmax(0,1fr));gap:5px;align-items:stretch;}
.matrix-header {display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--muted);min-height:34px;border-radius:6px;background:#f1f5f9;}
.matrix-corner {background:#e2e8f0;color:var(--ink);font-size:16px;}
.matrix-cell {min-width:0;min-height:38px;padding:2px;border:1.5px solid #cbd5e1;border-radius:7px;font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;cursor:pointer;transition:transform .1s ease,box-shadow .1s ease;}
.matrix-cell:hover {transform:translateY(-1px);}
.matrix-cell.is-selected {outline:2.5px solid #087b72;outline-offset:1px;box-shadow:0 2px 6px rgba(8,123,114,.2);}
.trainer-matrix-detail {margin:14px 0 0;padding:12px 16px;border-radius:10px;background:#f5f9ff;border:1px solid var(--line);font-size:15px;line-height:1.5;color:var(--ink);}
.matrix-detail-tip {display:block;margin-top:4px;color:#087b72;font-weight:600;}
@media(max-width:650px) {
  .trainer-matrix-summary,.trainer-matrix-body {padding:14px 14px;}
  .trainer-matrix-grid {grid-template-columns:26px repeat(10,minmax(0,1fr));gap:3px;}
  .matrix-cell {min-height:32px;font-size:11px;padding:1px;}
  .matrix-header {min-height:28px;font-size:11px;}
}