.learning-media { max-width: 1080px; margin: 0 auto; padding: 32px 0 72px; font-size: 18px; font-weight: 400; }
.media-breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; font-size: 14px; color: var(--ink-soft); }
.media-draft-note { margin-bottom: 18px; font-size: 14px; color: var(--ink-soft); }
.learning-media h1 { max-width: 20ch; font-size: clamp(2.3rem,5vw,3.6rem); line-height: 1.08; }
.learning-media h2 { font-size: 1.65rem; line-height: 1.2; }
.learning-media h3 { font-family: var(--sans); font-size: 1.12rem; font-weight: 600; }
.learning-media .resource-original h3 { font-family: var(--serif); font-size: 1.65rem; font-weight: 400; line-height: 1.2; }
.learning-media .resource-original h4 { font-family: var(--sans); font-size: 1.12rem; font-weight: 600; }
.pilot-lead { max-width: 68ch; color: var(--ink-soft); font-size: 1.1em; }
.learning-media button { min-height: 44px; padding: 10px 16px; border: 1px solid var(--rule-strong); border-radius: var(--radius-sm); color: var(--ink); background: var(--paper-deep); font-weight: 600; cursor: pointer; }
.learning-media button:hover { border-color: var(--terracotta-text); }
.learning-media button:disabled { opacity: .55; cursor: default; }
.learning-media button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.learning-media :focus-visible { outline: 2px solid var(--terracotta-text); outline-offset: 4px; }
.pilot-predict { margin: 34px 0 24px; max-width: 70ch; }
.learning-media #figure-status { margin: 14px 0 0; font-size: 16px; color: var(--ink-soft); }
.mechanism { margin: 0; border-top: 1px solid var(--rule-strong); }
.mechanism-row { display: grid; grid-template-columns: minmax(220px,.85fr) minmax(0,1.3fr); gap: 24px; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--rule-strong); }
.mechanism-row h2 { margin-bottom: 8px; }
.resource-original .mechanism-row h3 { margin-bottom: 8px; }
.mechanism-row p { margin-bottom: 12px; }
.mechanism-result { font-size: 16px; color: var(--ink-soft); }
.mechanism svg { width: 100%; max-width: 360px; height: auto; overflow: visible; justify-self: center; }
.mechanism svg text { fill: var(--ink); font: 500 18px var(--sans); }
.mechanism .signal { stroke: var(--terracotta-text); stroke-width: 3; fill: none; }
.mechanism marker path { fill: var(--terracotta-text); }
.mechanism .node { fill: var(--paper-deep); stroke: var(--rule-strong); stroke-width: 1.5; }
.mechanism .block-symbol { display: none; stroke: var(--danger); stroke-width: 4; }
.mechanism[data-blocked="true"] .block-symbol { display: block; }
.mechanism[data-blocked="true"] .dependent, .mechanism[data-blocked="true"] .output { stroke: var(--ink-faint); stroke-dasharray: 5 5; }
.mechanism[data-blocked="true"] .dependent { opacity: .45; }
.mechanism figcaption { margin-top: 16px; max-width: 75ch; font-size: 14px; color: var(--ink-soft); }
.pilot-audio, .pilot-case, .pilot-sources { max-width: 72ch; margin-top: 48px; }
.pilot-audio audio { display: block; width: min(100%,520px); margin: 18px 0; }
.pilot-audio > p, .pilot-sources { font-size: 16px; color: var(--ink-soft); }
.learning-media details { margin: 16px 0; padding-top: 14px; border-top: 1px solid var(--rule-strong); }
.learning-media summary { min-height: 44px; padding: 8px 0; font-weight: 600; cursor: pointer; }
.learning-media #transcript { padding-top: 16px; }
.learning-media fieldset { padding: 0; margin: 20px 0; border: 0; }
.learning-media legend { font-weight: 600; margin-bottom: 10px; }
.learning-media #case-form label { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-bottom: 1px solid var(--rule); cursor: pointer; }
.learning-media input { flex: 0 0 auto; margin-top: 8px; accent-color: var(--terracotta-text); }
.learning-media #case-feedback { margin-top: 20px; padding: 20px; background: var(--paper-deep); border-radius: var(--radius-sm); }
.media-read-aloud { margin: 24px 0; padding: 24px 0 0; border-top: 1px solid var(--rule-strong); }
.media-read-aloud > p { color: var(--ink-soft); font-size: 16px; }
.media-voice-options { display: grid; grid-template-columns: minmax(0,2fr) minmax(90px,1fr) minmax(120px,1fr); gap: 12px; margin: 20px 0 14px; }
.media-voice-options label { display: grid; gap: 6px; min-width: 0; font-size: 15px; font-weight: 500; }
.media-voice-options select { width: 100%; min-width: 0; min-height: 44px; padding: 8px; border: 1px solid var(--rule-strong); border-radius: var(--radius-sm); color: var(--ink); background: var(--paper); }
.media-speech-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.media-speech-status { margin: 16px 0 8px; }
.media-speech-hint { margin-bottom: 0; }
@media(max-width:700px) { .mechanism-row { grid-template-columns: 1fr; gap: 8px; } .media-voice-options { grid-template-columns: 1fr 1fr; } .media-voice-options label:first-child { grid-column: 1/-1; } }
@media(prefers-reduced-motion:reduce) { .learning-media { scroll-behavior: auto; } }
@media print { :root,:root[data-theme="dark"],:root:not([data-theme]) { --paper:#fff; --paper-deep:#fff; --paper-edge:#ddd; --ink:#111; --ink-soft:#333; --ink-faint:#444; --rule:#ccc; --rule-strong:#999; --terracotta-text:#333; background:#fff; color:#111; } body { background:#fff; color:#111; } .media-read-aloud,.media-breadcrumb,.pilot-predict button,.learning-media audio,.learning-media form { display: none; } .learning-media { font-size: 11pt; padding: 0; } .learning-media h1 { font-size: 25pt; } .mechanism-row { break-inside: avoid; } .pilot-audio,.pilot-case,.pilot-sources { margin-top: 24px; } .learning-media details:not([open]) > :not(summary) { display: block; } }
@media print {
  .learning-media details::details-content { content-visibility: visible !important; }
  .media-device-fallback { display: none; }
}