/* Oboroví audio průvodci — styl přehrávače kalkulačky */
.obor-audio{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(270px,.9fr);gap:16px 30px;align-items:center;margin:1rem 0 2.5rem;padding:28px 32px;border:6px solid white;border-radius:26px;background:radial-gradient(circle at 100% 0,#a9e1db,transparent 40%),linear-gradient(135deg,#e6f8f1,#c9ece8);color:#092f49;box-shadow:0 14px 35px #123d4816}.obor-audio h2{font-size:clamp(1.3rem,2vw,1.7rem);line-height:1.2;margin:0 0 .45rem;letter-spacing:-.025em}.obor-audio p{margin:0;font-size:.93rem;line-height:1.5}.obor-audio-label{display:block;color:#16888c;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;font-weight:800;margin-bottom:8px}.obor-zvuk{background:#fff;border:1px solid #dcefeb;border-radius:18px;padding:14px 16px;box-shadow:0 10px 24px #07314c13}.obor-zvuk strong{display:block;font-size:.92rem;margin-bottom:5px}.obor-zvuk audio{display:block;width:100%;height:40px}.obor-vlna{display:flex;align-items:center;height:30px;gap:4px;margin-top:9px}.obor-vlna i{display:block;width:4px;height:var(--h);border-radius:6px;background:#10a69f}.obor-vlna i:nth-child(4n){background:#f1645d}.obor-audio details{grid-column:1/-1;font-size:.92rem}.obor-audio summary{cursor:pointer;font-weight:700;color:#087f80;width:max-content;max-width:100%}.obor-audio summary:focus-visible,.obor-audio audio:focus-visible{outline:3px solid #087f80;outline-offset:4px}.obor-audio details p{max-width:90ch;margin:.75rem 0 0;line-height:1.7;white-space:pre-line}@media(max-width:700px){.obor-audio{grid-template-columns:1fr;padding:20px;gap:12px}.obor-audio details{grid-column:auto}}

/* Úsporný panel a vlna pouze během přehrávání. */
.obor-audio{padding:18px 26px;gap:10px 24px;margin-bottom:2rem}.obor-audio-label{margin-bottom:4px}.obor-audio h2{margin-bottom:.3rem}.obor-zvuk{padding:10px 14px}.obor-vlna{height:26px;margin-top:6px}.obor-audio.audio-hraje .obor-vlna i{animation:obor-vlna-pohyb .8s ease-in-out infinite alternate;animation-delay:0s}@keyframes obor-vlna-pohyb{from{transform:scaleY(.45)}to{transform:scaleY(1.15)}}@media(prefers-reduced-motion:reduce){.obor-audio.audio-hraje .obor-vlna i{animation:none}}

.obor-audio.audio-hraje .obor-vlna i:nth-child(3n){animation-delay:-.25s}.obor-audio.audio-hraje .obor-vlna i:nth-child(4n){animation-delay:-.5s}