.bv-reader{position:fixed;right:1rem;bottom:1rem;z-index:9998;font-family:system-ui,sans-serif}.bv-reader-toggle{border:0;border-radius:999px;padding:.8rem 1rem;background:#4b1d87;color:#fff;box-shadow:0 12px 32px #0003;font-weight:700}.bv-reader-panel{width:min(360px,calc(100vw - 2rem));margin-top:.5rem;padding:1rem;border-radius:1.25rem;background:#fff;color:#20152e;box-shadow:0 18px 50px #0004;border:1px solid #ddd}.bv-reader-head{display:flex;justify-content:space-between;gap:.75rem;align-items:center}.bv-reader-head span{font-size:.75rem;background:#eee7ff;padding:.3rem .55rem;border-radius:999px}.bv-reader-controls{display:grid;grid-template-columns:repeat(5,1fr);gap:.4rem;margin:.8rem 0}.bv-reader-controls button{border:1px solid #d9ccef;background:#faf7ff;border-radius:.65rem;padding:.55rem}.bv-reader label{display:block;font-size:.85rem;margin:.65rem 0}.bv-reader select,.bv-reader input{width:100%;margin-top:.25rem}.bv-reading-active{outline:3px solid #f5c842!important;outline-offset:4px;border-radius:.25rem;background:linear-gradient(90deg,#fff8c9aa,transparent)!important}#bv-reader-status{font-size:.82rem;color:#5e5269;margin-top:.75rem}@media(max-width:600px){.bv-reader{right:.5rem;bottom:.5rem}.bv-reader-panel{max-height:70vh;overflow:auto}}@media(prefers-reduced-motion:reduce){.bv-reader *{scroll-behavior:auto!important;transition:none!important}}

/* 4.2.3 · sincronización y continuidad */
.bv-reading-word{background:#fff2a8;color:#24164b;border-radius:.25rem;padding:0 .08em;box-decoration-break:clone}
.bv-reader-controls{display:grid;grid-template-columns:repeat(7,minmax(2.2rem,1fr));gap:.35rem}
.bv-reader-controls button{min-height:2.6rem;border-radius:.7rem}
@media(max-width:520px){.bv-reader-panel{width:min(94vw,26rem)}.bv-reader-controls{grid-template-columns:repeat(4,1fr)}}