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ease;box-shadow:0 8px 32px #b91c1c80,0 0 #b91c1c4d;font-family:inherit;justify-content:center;position:relative;animation:btn-glow 3s ease-in-out infinite}@keyframes btn-glow{0%,to{box-shadow:0 8px 32px #b91c1c80,0 0 #b91c1c00}50%{box-shadow:0 8px 32px #b91c1c80,0 0 0 12px #b91c1c26}}.listen-btn:hover{transform:scale(1.05);box-shadow:0 12px 40px #b91c1c99;border-color:#ffffff59}.listen-btn:active{transform:scale(.97)}.listen-btn-icon{font-size:48px}.listen-btn-text{font-size:16px;font-weight:800;letter-spacing:-.3px}.listen-btn-hint{font-size:11px;font-weight:500;opacity:.7}.listen-status{display:flex;flex-direction:column;align-items:center;gap:16px}.listen-pulse{width:140px;height:140px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative}.listen-pulse.requesting{background:#ffffff1a;border:3px solid rgba(255,255,255,.2);animation:pulse-ring 1.5s ease-in-out infinite}.listen-pulse.listening{background:linear-gradient(135deg,var(--color-accent) 0%,#7f1d1d 100%);border:3px solid rgba(255,255,255,.3);animation:pulse-ring 1s ease-in-out infinite}.listen-pulse.identifying{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);border:3px solid rgba(255,255,255,.2);animation:spin-slow 2s linear infinite}@keyframes pulse-ring{0%{box-shadow:0 0 #b91c1c80}70%{box-shadow:0 0 0 20px #b91c1c00}to{box-shadow:0 0 #b91c1c00}}@keyframes spin-slow{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.listen-status-icon{font-size:48px}.listen-pulse.identifying .listen-status-icon{animation:spin-slow 2s linear infinite reverse}.listen-status-text{font-size:16px;font-weight:600;color:#ffffffe6}.listen-status-text strong{color:#fff;font-weight:800}.listen-bars{display:flex;align-items:flex-end;gap:4px;height:32px}.listen-bar{width:6px;background:#fffc;border-radius:3px;animation:bar-bounce .8s ease-in-out infinite}.listen-bar:nth-child(1){height:12px;animation-delay:0s}.listen-bar:nth-child(2){height:24px;animation-delay:.1s}.listen-bar:nth-child(3){height:32px;animation-delay:.2s}.listen-bar:nth-child(4){height:20px;animation-delay:.3s}.listen-bar:nth-child(5){height:16px;animation-delay:.4s}@keyframes bar-bounce{0%,to{transform:scaleY(.4)}50%{transform:scaleY(1)}}.listen-cancel{padding:8px 24px;background:#ffffff1a;border:1px solid rgba(255,255,255,.25);border-radius:50px;color:#fffc;font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;transition:all var(--transition)}.listen-cancel:hover{background:#fff3;color:#fff}.listen-result{width:100%;max-width:380px;display:flex;flex-direction:column;align-items:center;gap:12px}.demo-badge{padding:8px 16px;background:#d9770633;border:1px solid rgba(217,119,6,.4);border-radius:50px;font-size:12px;font-weight:600;color:#fbbf24;text-align:center}.listen-result-header{display:flex;align-items:center;gap:8px}.result-check{font-size:24px}.result-title{font-size:20px;font-weight:800;color:#fff}.listen-result-card{width:100%;background:#0000004d;border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);padding:20px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.result-song-info{margin-bottom:16px;text-align:center}.result-song-title{font-size:20px;font-weight:800;color:#fff;margin-bottom:2px}.result-song-artist{font-size:15px;color:#ffffffb3;font-weight:500}.result-dance-divider{text-align:center;font-size:14px;font-weight:600;color:var(--color-line-dance);padding:10px 0 6px;margin-top:4px;border-top:1px solid var(--color-border)}.result-dance-info{display:flex;flex-direction:column;gap:8px;padding:14px;background:#ffffff0f;border-radius:var(--radius-sm);margin-bottom:16px}.result-dance-row{display:flex;justify-content:space-between;align-items:center}.result-label{font-size:13px;font-weight:600;color:#ffffff80;text-transform:uppercase;letter-spacing:.5px}.result-value{font-size:15px;font-weight:700;color:#fff}.result-bpm{color:var(--color-accent-light);font-size:17px;font-weight:900}.result-links{display:flex;gap:8px}.result-hint{font-size:14px;color:#ffffffa6;line-height:1.5;margin-bottom:12px}.listen-again-btn{padding:12px 28px;background:#ffffff1f;border:1px solid rgba(255,255,255,.25);border-radius:50px;color:#fff;font-size:15px;font-weight:700;font-family:inherit;cursor:pointer;transition:all var(--transition)}.listen-again-btn:hover{background:#fff3;transform:translateY(-1px)}@media(max-width:480px){.hero{padding:24px 16px 20px}.hero-title{font-size:28px}.listen-btn{width:140px;height:140px}.listen-btn-icon{font-size:36px}.listen-btn-text{font-size:14px}.listen-pulse{width:110px;height:110px}.listen-pulse .listen-status-icon{font-size:36px}.result-links,.song-card-links{flex-direction:column}.category-btn{padding:8px 14px;font-size:13px}.bpm-presets{grid-template-columns:repeat(2,1fr)}.featured-card{min-width:220px;max-width:220px}}.guide-section,.glossary-section{max-width:600px;width:100%;margin:0 auto;padding:28px 16px}.guide-intro{text-align:center;color:var(--color-text-secondary);font-size:14px;line-height:1.5;margin-bottom:20px}.guide-list,.glossary-list{display:flex;flex-direction:column;gap:8px}.guide-item,.glossary-item{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:14px 16px;cursor:pointer;transition:background var(--transition),border-color var(--transition)}.guide-item:hover,.glossary-item:hover{background:var(--color-card-hover);border-color:var(--color-border-light)}.guide-item.open,.glossary-item.open{border-color:var(--color-primary-light);background:var(--color-card-hover)}.guide-item-header,.glossary-item-header{display:flex;align-items:center;gap:12px}.guide-icon{font-size:22px;flex-shrink:0}.guide-item-title,.glossary-term{font-size:15px;font-weight:600;color:var(--color-text);flex:1}.guide-chevron{font-size:18px;font-weight:700;color:var(--color-text-muted);flex-shrink:0;width:20px;text-align:center}.guide-item-details,.glossary-definition{margin-top:12px;font-size:14px;line-height:1.6;color:var(--color-text-secondary);padding-left:34px}.glossary-definition{padding-left:0}.glossary-search{width:100%;padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--color-border);background:var(--color-card);color:var(--color-text);font-size:14px;font-family:inherit;margin-bottom:16px;outline:none;transition:border-color var(--transition)}.glossary-search::placeholder{color:var(--color-text-muted)}.glossary-search:focus{border-color:var(--color-primary-light)}.glossary-empty{text-align:center;color:var(--color-text-muted);font-size:14px;padding:24px 0}