.sound-root{--sound-ink:#0f172a;--sound-soft:#475569;--sound-paper:#f8fafc;--sound-card:#ffffff;--sound-accent:#1d4ed8;--sound-accent-soft:#dbeafe;--sound-wave:#38bdf8;background:radial-gradient(1200px 500px at 10% -10%,#dbeafe 0,transparent 55%),radial-gradient(900px 420px at 100% 0,#e0e7ff 0,transparent 50%),var(--sound-paper);color:var(--sound-ink);min-height:100dvh}.sound-header .global-brand-mark{letter-spacing:-.03em}.sound-brand-mark{display:inline-grid;place-items:center;width:1.75rem;height:1.75rem;border-radius:.45rem;background:var(--sound-accent);color:#fff;font-size:.95rem;line-height:1}.sound-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:1.75rem;align-items:center;padding:1.5rem 0 .5rem}.sound-hero h1{margin:.35rem 0 .75rem;font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.02;letter-spacing:-.04em}.sound-hero-lede{margin:0 0 1rem;color:var(--sound-soft);font-size:1.05rem;line-height:1.65;max-width:36rem}.sound-hero-chips{display:flex;flex-wrap:wrap;gap:.45rem;margin:0 0 1rem;padding:0;list-style:none}.sound-hero-chips li{padding:.28rem .65rem;border-radius:999px;background:var(--sound-accent-soft);color:var(--sound-accent);font-size:.78rem;font-weight:700}.sound-hero-copy{min-width:0}.sound-hero-controls{display:flex;flex-wrap:wrap;gap:.65rem;margin-bottom:1.1rem}.sound-accent,.sound-speed,.sound-voice{display:inline-flex;align-items:center;gap:.3rem;padding:.28rem;border:1px solid rgba(15,23,42,.12);border-radius:999px;background:#fff}.sound-accent-label,.sound-speed-label,.sound-voice-label{padding:0 .4rem;font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--sound-soft)}.sound-accent button,.sound-speed button,.sound-voice button{border:0;background:transparent;border-radius:999px;padding:.35rem .7rem;font-size:.85rem;font-weight:650;color:var(--sound-ink);cursor:pointer}.sound-accent button.is-on,.sound-speed button.is-on,.sound-voice button.is-on{background:var(--sound-accent);color:#fff}.sound-playlist-btn{border:1px solid rgba(15,23,42,.14);border-radius:999px;padding:.4rem .85rem;background:#fff;font-size:.82rem;font-weight:650;color:var(--sound-ink);cursor:pointer}.sound-playlist-btn.is-on,.sound-playlist-btn:hover{background:var(--sound-accent);border-color:var(--sound-accent);color:#fff}.sound-word-actions{display:inline-flex;align-items:center;gap:.35rem;flex-wrap:wrap;justify-content:flex-end}.sound-hero-panel{display:grid;place-items:center;gap:.85rem;min-height:240px;padding:1.5rem;border-radius:1.25rem;background:linear-gradient(160deg,#0f172a,#1e3a8a);color:#e2e8f0;box-shadow:0 18px 50px rgba(15,23,42,.22)}.sound-wave{display:flex;align-items:flex-end;gap:.35rem;height:72px}.sound-wave span{display:block;width:.55rem;border-radius:999px;background:var(--sound-wave);animation:sound-bounce 1.1s ease-in-out infinite}.sound-wave span:first-child{height:28%;animation-delay:0s}.sound-wave span:nth-child(2){height:55%;animation-delay:.08s}.sound-wave span:nth-child(3){height:80%;animation-delay:.16s}.sound-wave span:nth-child(4){height:100%;animation-delay:.24s}.sound-wave span:nth-child(5){height:62%;animation-delay:.32s}.sound-wave span:nth-child(6){height:42%;animation-delay:.4s}.sound-wave span:nth-child(7){height:70%;animation-delay:.48s}@keyframes sound-bounce{0%,to{transform:scaleY(.55);opacity:.65}50%{transform:scaleY(1);opacity:1}}.sound-hero-panel-label{margin:0;font-size:.9rem;letter-spacing:.02em}.sound-empty{margin:.5rem 0 2rem;padding:1.4rem 1.25rem;border:1px dashed rgba(29,78,216,.35);border-radius:1rem;background:rgba(255,255,255,.7)}.sound-empty-title{margin:0 0 .4rem;font-size:1.15rem;font-weight:750}.sound-empty p{margin:.35rem 0;color:var(--sound-soft);line-height:1.6}.sound-empty-meta{font-size:.9rem}.sound-tutor-pair{margin:1.75rem 0 1rem;padding:1.2rem 1.15rem 1.3rem;border:1px solid rgba(15,23,42,.1);border-radius:1rem;background:#fff}.sound-tutor-kicker{margin:0 0 .25rem;color:var(--sound-accent);font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.sound-tutor-pair h2{margin:0 0 .4rem;font-size:clamp(1.15rem,2.4vw,1.45rem);letter-spacing:-.02em}.sound-tutor-lede{margin:0 0 1rem;color:var(--sound-soft);line-height:1.6}.sound-tutor-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:.85rem;align-items:stretch}.sound-tutor-banner{display:flex;flex-direction:column;align-items:center;gap:.55rem;padding:.55rem;border-radius:.85rem;border:1px solid rgba(15,23,42,.1);background:#fff;text-decoration:none;color:inherit;transition:border-color .16s ease,box-shadow .16s ease}.sound-tutor-banner:hover{border-color:color-mix(in srgb,var(--sound-accent) 45%,transparent);box-shadow:0 10px 28px rgba(15,23,42,.08)}.sound-tutor-banner img{display:block;width:100%;max-width:220px;height:auto;border-radius:.5rem}.sound-tutor-banner-caption{font-size:.82rem;font-weight:700;color:var(--sound-accent);letter-spacing:.01em}.sound-tutor-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.45rem;padding:1rem .75rem;border-radius:.85rem;border:1px solid rgba(15,23,42,.1);background:var(--sound-paper);text-decoration:none;color:inherit;text-align:center}.sound-tutor-card:hover{border-color:color-mix(in srgb,var(--sound-accent) 45%,transparent);background:var(--sound-accent-soft)}.sound-tutor-logo{display:flex;align-items:center;justify-content:center;min-height:2.25rem}.sound-tutor-logo img{display:block;height:1.7rem;width:auto;max-width:6.5rem}.sound-tutor-offer{font-size:.8rem;font-weight:700;color:var(--sound-accent)}.sound-tutor-cta{font-size:.82rem;font-weight:650}.sound-listen-banner{margin:1rem 0 1.25rem;padding:.85rem 1rem;border-radius:.85rem;background:var(--sound-accent-soft)}.sound-listen-kicker{margin:0 0 .45rem;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--sound-accent)}.sound-pin-layout{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:1.5rem;margin-top:.75rem}.sound-pin-visual{position:relative}.sound-pin-visual img{display:block;width:100%;height:auto;border-radius:.85rem;border:1px solid rgba(15,23,42,.08);background:#fff}.sound-share-btn{position:absolute;right:.75rem;bottom:.75rem;z-index:2;display:inline-flex;align-items:center;gap:.35rem;padding:.45rem .7rem;border:1px solid rgba(15,23,42,.12);border-radius:999px;background:rgba(255,255,255,.94);color:var(--sound-ink);font-size:.78rem;font-weight:650;letter-spacing:.01em;cursor:pointer;box-shadow:0 6px 18px rgba(15,23,42,.12);backdrop-filter:blur(6px)}.sound-share-btn:hover{background:#fff;border-color:color-mix(in srgb,var(--sound-accent) 40%,transparent);color:var(--sound-accent)}.sound-share-btn:focus-visible{outline:2px solid var(--sound-accent);outline-offset:2px}.sound-pin-chart-title{margin:-.35rem 0 .75rem;font-size:1rem;font-weight:600;color:var(--sound-soft)}.sound-pin-lede{color:var(--sound-soft);line-height:1.65}.sound-tts-btn{width:2rem;height:2rem;border-radius:999px;border:1px solid var(--sound-ink);background:#fff;cursor:pointer;font-size:.75rem}.sound-tts-btn.is-playing,.sound-tts-btn:hover{background:var(--sound-accent);border-color:var(--sound-accent);color:#fff}.sound-tts-empty{color:var(--sound-soft);font-size:.85rem}.sound-pin-card{display:flex;flex-direction:column;gap:.35rem;padding:1rem;border-radius:.85rem;border:1px solid rgba(15,23,42,.1);background:#fff;text-decoration:none;color:inherit}.sound-related{content-visibility:auto;contain-intrinsic-size:720px;margin-top:2.75rem}.sound-related .sound-related-card img{background:#f8fafc}@media (max-width:860px){.sound-hero,.sound-pin-layout,.sound-tutor-grid{grid-template-columns:1fr}.sound-tutor-banner img{max-width:260px}}