@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Noto+Sans+JP:wght@400;450;500;550;600;650;700&display=swap');
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@media(min-width:1500px){main{padding-top:50px}.explorer-layout{grid-template-columns:370px minmax(0,1fr)}.score-card{padding-left:38px;padding-right:38px}.staff-container{height:182px}.keyboard{height:150px}.piano-key.black{height:93px}.page-heading{margin-bottom:36px}.selector-card{padding-top:29px}.selector-divider{margin-top:23px;margin-bottom:24px}.quality-key{height:38px}}
@media(max-width:1190px){.sidebar{width:200px;padding-left:16px;padding-right:16px}.brand{font-size:21px;gap:9px}.app-shell{margin-left:200px}.topbar{padding:0 28px}main{padding:32px 28px 0}.explorer-layout{grid-template-columns:300px minmax(0,1fr);gap:17px}.selector-card{padding-left:18px;padding-right:18px}.score-card{padding-left:23px;padding-right:23px}.keyboard-controls{gap:12px}.keyboard-legend{display:none}.play-button{padding:12px}.play-button kbd{display:none}.chord-title{font-size:58px}.chord-title>span{font-size:31px}.toast{left:calc(50% + 100px)}}
@media(max-width:1000px){.sidebar{width:77px;align-items:center;padding:26px 12px}.brand>span:last-child,.workspace-label,.nav-item>.nav-active-dot,.nav-count,.sidebar-note,.sidebar-help,.sidebar-footer{display:none}.sidebar nav{margin-top:38px;width:100%}.nav-item{font-size:0;justify-content:center;gap:0;padding:15px}.nav-item .icon{width:19px;height:19px}.app-shell{margin-left:77px}.topbar{height:65px}main{padding-top:29px}h1{font-size:25px}.explorer-layout{grid-template-columns:285px minmax(0,1fr);gap:16px}.selector-card{padding:20px 16px 0}.score-card{padding:20px 21px 0}.chord-formula{display:none}.tone-chip{padding:5px 8px}.playback-section{flex-wrap:wrap;gap:13px}.playback-info p{font-size:8px}.playback-pattern{display:none}.play-button{font-size:10px;gap:7px}.keyboard-heading p{max-width:350px}.toast{left:calc(50% + 38px)}}
@media(max-width:780px){.sidebar{display:none}.app-shell{margin-left:0}.topbar{padding:0 24px}.topbar .header-right{gap:13px}.sound-status{font-size:8px}main{padding:29px 24px 0}.explorer-layout{grid-template-columns:265px minmax(0,1fr)}.selector-card{padding-left:14px;padding-right:14px}.score-card{padding-left:18px;padding-right:18px}.page-heading{align-items:flex-start}.shuffle-button{font-size:9px;padding:10px;margin-top:29px}.tone-row{gap:5px}.tone-chip{font-size:10px;padding:5px 7px;gap:5px}.playback-section{padding:15px 0}.play-button{width:100%}.playback-info{display:flex;align-items:center;gap:12px}.playback-info p{margin:0}.keyboard-heading{align-items:flex-start}.keyboard-controls{margin-top:0}.keyboard-heading p{max-width:300px;font-size:8px}.toast{left:50%}.section-label{gap:6px}.section-label h2{font-size:11px}.text-button{font-size:8px}.selector-foot{font-size:7px}.staff-container{height:164px}.page-footer>span:first-child{font-size:7px}}
@media(max-width:620px){.topbar{height:58px;padding:0 18px}.breadcrumb{gap:9px;font-size:9px}.breadcrumb>span:nth-child(2){display:none}.breadcrumb .slash{display:none}.sound-status{font-size:7px;letter-spacing:1px}.icon-button{height:30px;width:30px}main{padding:26px 17px 0}.page-heading{margin-bottom:23px;gap:8px}h1{font-size:23px;letter-spacing:.2px}.eyebrow{font-size:8px;letter-spacing:1.7px;margin-bottom:9px}.page-heading p{font-size:9px;line-height:1.8;max-width:230px}.shuffle-button{padding:9px;width:33px;height:33px;overflow:hidden;font-size:0;gap:0;margin-top:26px;flex-shrink:0}.shuffle-button .icon{width:15px;height:15px}.explorer-layout{grid-template-columns:1fr;gap:15px}.selector-card{padding:20px 19px 0}.section-label{margin-bottom:20px;gap:9px}.section-label h2{font-size:12px}.text-button{font-size:9px}.root-grid{grid-template-columns:repeat(12,1fr);gap:4px}.root-key{height:35px;font-size:11px;border-radius:4px}.root-key.accidental{font-size:9px}.selector-divider{margin:15px 0 18px}.quality-grid{grid-template-columns:repeat(6,1fr)}.category-tabs{justify-content:flex-start;gap:22px}.category-tabs button{font-size:10px}.selected-description{margin-bottom:12px}.selector-foot{font-size:8px;padding:12px 0}.score-card{padding:19px 24px 0;min-height:425px}.chord-title{font-size:60px}.chord-title>span{font-size:34px}.chord-title-row{margin-top:3px}.chord-formula{display:block}.staff-container{height:146px;margin-top:7px}.tone-row{gap:8px;margin-bottom:18px}.tone-chip{font-size:11px;padding:6px 10px}.playback-section{flex-wrap:nowrap;gap:8px;padding:18px 0}.playback-info{display:block}.playback-info p{margin-top:7px;font-size:8px}.play-button{width:auto;padding:13px 14px;font-size:10px}.keyboard-card{margin-top:15px;padding:20px 17px 14px}.keyboard-heading{flex-wrap:wrap;gap:12px;margin-bottom:17px}.keyboard-heading p{max-width:100%;font-size:9px;line-height:1.9}.keyboard-controls{width:100%;justify-content:space-between;flex-direction:row-reverse}.keyboard-legend{display:flex}.keyboard{height:126px;min-width:580px}.piano-key.black{height:78px}.keyboard-bottom>span:last-child{display:none}.keyboard-bottom{font-size:8px}.page-footer{padding-top:20px;font-size:7px;gap:15px;line-height:1.8}.page-footer>span:last-child{font-size:6px;letter-spacing:.7px}.footer-dot{margin:0 4px}.toast{width:max-content;max-width:90vw}.keyboard-scroll{scrollbar-width:thin;scrollbar-color:#d9e2ce transparent}}
.card{min-width:0}.root-key{min-width:0;padding:0}.explorer-layout>*{min-width:0}
.native-sound-panel{padding:16px;margin:14px 0;background:var(--pale);border:1px solid var(--line);border-radius:8px}.native-sound-panel>strong{font-size:13px;color:var(--green)}.native-sound-panel p{font-size:11px;line-height:1.8;color:#7c8872;margin:8px 0 12px}.native-sound-actions{display:flex;flex-wrap:wrap;gap:8px}.native-sound-panel #native-host-status{font-size:10px;margin-bottom:0}
@media(max-width:620px){.root-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.root-key{font-size:12px}.root-key.accidental{font-size:10px}}
@media(max-width:360px){h1{font-size:19px;white-space:nowrap}.page-heading p{font-size:8px}.shuffle-button{margin-top:22px}.category-tabs{gap:17px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}