body { background-image: none; }
.explanation-heading { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-bottom: 16px; }
.explanation-heading h2 { margin: 0; }
#explicacion-organizacion .explanation-heading h2 { flex: 1 1 260px; }
.speech-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.speech-controls[hidden] { display: none; }
.speech-controls button { min-height: 48px; border: 1px solid #a5b9ae; border-radius: 8px; padding: 10px 14px; background: var(--paper); color: var(--ink); font: 700 16px/1.4 Arial, sans-serif; cursor: pointer; }
.speech-controls #speech-play { background: var(--ink); color: var(--paper); }
.speech-controls button:not(:disabled):hover { background: var(--mint); color: var(--ink); }
.speech-controls button:disabled { opacity: .55; cursor: default; }
.speech-controls button:focus-visible { outline: 3px solid var(--teal); outline-offset: 4px; }
.topic-card .speech-status { color: var(--muted); font-size: 16px; margin: 0 0 16px; }
.speech-status:empty { display: none; }
.topic-page { max-width: 960px; padding: 40px 0 64px; }
.topic-page h1 { font-size: clamp(2.5rem, 6vw, 4rem); max-width: none; margin-top: 28px; }
.topic-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.topic-heading h1 { margin: 0; }
.topic-back { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; min-height: 54px; padding: 14px 22px; border: 1px solid #a5b9ae; border-radius: 10px; background: var(--paper); color: var(--ink); font: 700 18px/1.4 Arial, sans-serif; }
.topic-back:hover { background: var(--mint); }
.topic-back:focus-visible { outline: 3px solid var(--teal); outline-offset: 4px; }
@media (max-width: 700px) { .topic-heading { align-items: flex-start; flex-direction: column; gap: 18px; } .topic-back { width: 100%; } }
.topic-lead { color: var(--muted); font: 20px/1.6 Arial, sans-serif; max-width: 820px; }
.topic-card { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 32px; margin: 28px 0; }
.topic-card h2 { font-size: clamp(1.7rem, 4vw, 2.2rem); }
.topic-card p, .topic-card li { font: 20px/1.65 Arial, sans-serif; }
.topic-card li + li { margin-top: 12px; }
.topic-card ul, .topic-card ol { padding-left: 26px; }
.topic-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 24px; }
.topic-actions .button { background: var(--ink); min-height: 52px; align-items: center; }
.topic-actions .button:hover { background: var(--teal); }
.topic-related { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
.topic-related a { border: 1px solid var(--line); border-radius: 8px; padding: 12px 18px; background: var(--paper); font: 700 18px/1.5 Arial, sans-serif; }
.topic-related a:hover { background: var(--mint); }
.topic-related a:focus-visible { outline: 3px solid var(--teal); outline-offset: 4px; }
@media (max-width: 600px) { .topic-card { padding: 22px; } .topic-actions .button { width: 100%; } }