body{background:#f5f7fa;color:#142b45}#auscultation{max-width:1240px;margin:auto;padding:36px 24px 70px}.back{color:#37516b;font-size:14px}.intro{display:grid;grid-template-columns:1.5fr 1fr;gap:60px;align-items:center;padding:36px 0}.intro h1{font-size:clamp(38px,5vw,64px);line-height:1.05;letter-spacing:-2px;margin:14px 0 20px}.intro em{font-family:Georgia,serif;font-weight:400;color:#537a8b}.intro p{line-height:1.7}.intro-note{border-left:3px solid #a6bdc8;padding:12px 25px}.intro-note strong{font-size:24px}.intro-note p,.small{font-size:13px;color:#516479}.eyebrow{letter-spacing:2px;font-size:11px;font-weight:700}.toolbar{display:flex;gap:20px;padding:22px;background:#fff;border:1px solid #dae2e9;border-radius:16px;margin-bottom:22px}.toolbar label{flex:1;font-size:12px;font-weight:700;display:grid;gap:8px}#auscultation select{width:100%;background:#f8fafc;color:#142b45;border:1px solid #c5d1dd;padding:12px;border-radius:7px;font-size:14px}.lab{display:grid;grid-template-columns:1fr 1.15fr;gap:22px}.anatomy,.listening{background:#fff;border:1px solid #dae2e9;border-radius:18px;padding:25px;min-width:0}.panel-heading{display:flex;justify-content:space-between;gap:12px;align-items:center}.panel-heading h2{font-size:19px}.torso{position:relative;max-width:370px;margin:auto;aspect-ratio:400/470}.torso svg{width:100%;height:100%}.point{position:absolute;transform:translate(-50%,-50%);width:44px;height:44px;padding:0!important;border-radius:50%!important;border:2px solid white!important;background:#224b64!important;color:white!important;box-shadow:0 0 0 1px #8db0c1;font-weight:700}.point[aria-pressed=true]{background:#c09730!important;box-shadow:0 0 0 6px #c0973030}#orientation{font-size:12px;color:#556b7e}.small{line-height:1.6}.listening h2{font-size:28px;margin:18px 0 8px}.listening p{line-height:1.7}.soundbox{background:#132b42;border-radius:12px;padding:18px;margin:25px 0;color:white}#wave{width:100%;height:100px;background:linear-gradient(transparent 49%,#ffffff12 50%,transparent 51%)}#auscultation button{font:inherit;font-size:13px;cursor:pointer;background:#eaf0f5;border:1px solid #ccd9e3;border-radius:7px;padding:11px 15px;color:#142b45}#auscultation button:hover{filter:brightness(.95)}#auscultation button:focus-visible,#auscultation select:focus-visible{outline:3px solid #c09730;outline-offset:3px}#auscultation button:disabled{opacity:.45;cursor:not-allowed}.playbar{display:flex;gap:8px;flex-wrap:wrap}#play{background:#e4c470!important;border:0!important}.volume{display:flex;align-items:center;gap:15px;margin-top:18px;font-size:13px}.volume input{width:100%;accent-color:#e4c470}#audio-status{font-size:12px;color:#d2e1e9;margin-bottom:0}#answers{display:grid;gap:10px}#answers button{text-align:left;padding:15px}#feedback{background:#eff5f7;padding:0 15px;margin:20px 0;line-height:1.7}#feedback:not(:empty){padding:15px}.sources{margin:26px 0;border-top:1px solid #ccd9e3;padding:24px 0;font-size:14px;line-height:1.7}.sources summary{cursor:pointer;font-weight:700}.sources a{color:#235871}#auscultation [hidden]{display:none!important}@media(max-width:760px){.intro,.lab{grid-template-columns:1fr}.intro{gap:8px}.toolbar{flex-direction:column;gap:16px}.intro-note{padding:0 18px}.anatomy,.listening{padding:18px}#auscultation{padding:24px 15px}.torso{max-width:330px}}