.trainer-entry { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.trainer-entry span, .trainer-context, .trainer-muted { color: var(--ink-soft); font-size: 13px; }
.trainer-entry h3 { margin: 4px 0 0; font-size: 18px; line-height: 1.3; letter-spacing: 0; }
.trainer-primary.button { color: #fff; background: #2958ba; border-color: #2958ba; }
.trainer-primary.button:hover:not(:disabled) { background: #214894; border-color: #214894; }
.trainer-dialog { box-sizing: border-box; width: min(680px, calc(100% - 32px)); max-height: min(800px, calc(100dvh - 36px)); padding: 0; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--ink); overflow: hidden; }
.trainer-dialog[open] { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; }
.trainer-dialog::backdrop { background: rgb(12 18 27 / 52%); }
.trainer-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); padding: 12px 20px; }
.trainer-header h2 { margin: 0; font-size: 20px; line-height: 1.3; letter-spacing: 0; }
.trainer-header .icon-button { flex: 0 0 44px; width: 44px; height: 44px; }
.trainer-body { overflow: auto; overscroll-behavior: contain; padding: 16px 20px; min-height: 0; }
.trainer-brief { margin: 0 0 14px; }
.trainer-principles { margin: 16px 0 0; padding-left: 22px; }
.trainer-principles li { padding: 12px 0 12px 4px; border-top: 1px solid var(--line); }
.trainer-principles li::marker { font-weight: 800; color: var(--blue); }
.trainer-principles h3 { margin: 0 0 4px; font-size: 16px; line-height: 1.4; letter-spacing: 0; }
.trainer-principles p { margin: 0; color: var(--ink-soft); }
.trainer-quiz fieldset { display: grid; gap: 8px; min-width: 0; padding: 0; margin: 0; border: 0; }
.trainer-quiz legend { margin-bottom: 12px; padding: 0; font-size: 16px; font-weight: 800; line-height: 1.45; }
.trainer-choice { display: grid; grid-template-columns: 18px minmax(0, 1fr); align-items: start; gap: 10px; min-height: 44px; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 6px; cursor: pointer; }
.trainer-choice:has(input:checked) { border-color: var(--blue); background: var(--blue-soft); }
.trainer-choice:has(input:disabled) { cursor: default; }
.trainer-choice input { width: 17px; height: 17px; margin: 3px 0 0; accent-color: var(--blue); }
.trainer-explanation { margin-top: 16px; padding: 12px; background: var(--surface-soft); border-radius: 8px; }
.trainer-explanation p { margin: 4px 0 0; }
.trainer-voice-state { display: flex; align-items: center; gap: 12px; margin: 0 0 16px; }
.trainer-voice-mark { display: grid; place-items: center; flex: 0 0 44px; height: 44px; border: 1px solid var(--line); border-radius: 8px; color: var(--blue); }
.trainer-voice-mark svg { width: 20px; height: 20px; }
.trainer-voice-state h3 { margin: 0 0 2px; font-size: 17px; letter-spacing: 0; }
.trainer-voice-state p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.trainer-context { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 12px; margin-bottom: 12px; }
.trainer-terms { border-block: 1px solid var(--line); padding-block: 10px; }
.trainer-terms summary, .trainer-transcript summary { cursor: pointer; color: var(--blue); font-size: 14px; }
.trainer-terms dl { display: flex; flex-wrap: wrap; gap: 12px 28px; margin: 12px 0 8px; font-variant-numeric: tabular-nums; }
.trainer-terms dt, .trainer-terms dd { margin: 0; font-size: 14px; }
.trainer-terms dd { font-weight: 800; }
.trainer-terms p, .trainer-status, .trainer-hint, .trainer-error { margin: 0; font-size: 13px; }
.trainer-thread, .trainer-checks { list-style: none; margin: 14px 0 0; padding: 0; }
.trainer-message { width: fit-content; max-width: min(88%, 52ch); margin: 0 0 12px; padding: 9px 12px; border-radius: 8px; background: var(--surface-soft); }
.trainer-message span { font-size: 12px; font-weight: 800; color: var(--ink-soft); }
.trainer-message p { margin: 3px 0 0; line-height: 1.5; font-size: 15px; white-space: pre-wrap; overflow-wrap: anywhere; }
.trainer-message.trainer-admin { margin-left: auto; background: var(--blue-soft); }
.trainer-footer { display: grid; gap: 8px; padding: 12px 20px max(12px, env(safe-area-inset-bottom)); border-top: 1px solid var(--line); }
.trainer-compose { display: grid; grid-template-columns: minmax(0, 1fr) 48px; align-items: end; gap: 8px; }
.trainer-compose textarea { width: 100%; min-height: 50px; max-height: 122px; resize: vertical; padding: 9px 10px; border: 1px solid var(--line-strong); border-radius: 6px; color: var(--ink); background: var(--surface); font: inherit; font-size: 16px; }
.trainer-compose textarea::placeholder { color: var(--ink-soft); }
.trainer-send.button { padding: 0; width: 48px; height: 48px; justify-content: center; }
.trainer-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.trainer-actions .button { min-height: 44px; white-space: normal; }
.trainer-dialog button:disabled { opacity: .6; cursor: not-allowed; }
.trainer-error { color: var(--danger-ink); }
.trainer-status, .trainer-hint { color: var(--ink-soft); }
.trainer-result h3 { margin: 0 0 8px; font-size: 16px; letter-spacing: 0; }
.trainer-result p { margin: 0 0 10px; }
.trainer-checks li { padding: 9px 0; border-bottom: 1px solid var(--line); }
.trainer-checks li > div { display: flex; align-items: start; gap: 8px; }
.trainer-checks svg { flex: 0 0 17px; height: 17px; color: var(--blue); }
.trainer-checks li > p { margin: 4px 0 0 25px; color: var(--ink-soft); font-size: 14px; }
.trainer-result blockquote { margin: 4px 0 6px; color: var(--ink-soft); overflow-wrap: anywhere; white-space: pre-wrap; }
.trainer-checks blockquote { margin-left: 25px; }
.trainer-corrections, .trainer-example, .trainer-transcript { margin-top: 16px; }
.trainer-example { background: var(--blue-soft); border-radius: 8px; padding: 12px; }
.trainer-dialog :focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.trainer-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@media (max-width: 520px) {
  .trainer-dialog { width: calc(100% - 12px); max-height: calc(100dvh - 12px); }
  .trainer-header, .trainer-body, .trainer-footer { padding-inline: 12px; }
  .trainer-header h2 { font-size: 18px; }
}