:root{--primary:#5b5bd6;--primary-strong:#4a48c4;--primary-soft:#ececfb;--primary-softer:#f5f5fd;--accent:var(--primary);--bg-app:#f5f5f8;--bg-surface:#fff;--bg-raise:#fbfbfc;--bg-subtle:#eef0f4;--bg-hover:#e9ecf1;--border:#e3e5ea;--border-strong:#cdd1da;--text:#1a1d24;--text-muted:#6b7280;--text-faint:#9aa1ad;--on-accent:#fff;--danger:#d64545;--danger-soft:#fbecec;--success:#1f9d63;--success-soft:#e9f7f0;--r-xs:6px;--r-sm:8px;--r-md:12px;--r-lg:16px;--r-full:999px;--shadow-xs:0 1px 2px #1418280d;--shadow-sm:0 2px 6px #1418280f, 0 1px 2px #1418280a;--shadow-md:0 10px 30px #14182824, 0 4px 12px #14182814;--shadow-pop:0 16px 48px #14182833, 0 6px 16px #14182814;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--ctl-h:30px;--ctl-h-sm:26px;--ctl-font:.79rem;--label-font:.66rem;--header-h:46px;--toolbar-h:44px;--transport-h:58px;--tools-w:372px;--t-fast:.12s ease;--t-med:.2s ease}*,:before,:after{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;padding:0}body{background:var(--bg-app);color:var(--text);overscroll-behavior:none;-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5;overflow:hidden}button{cursor:pointer;font:inherit;color:inherit;text-wrap:nowrap;-webkit-tap-highlight-color:transparent;background:0 0;border:none;padding:0}input,select,textarea{font:inherit;color:inherit}button:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:2px solid color-mix(in srgb, var(--primary) 65%, transparent);outline-offset:2px;border-radius:var(--r-xs)}::selection{background:var(--primary-soft);color:var(--primary-strong)}input[type=number]{appearance:textfield}input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}input[type=range]{accent-color:var(--primary)}.viewer-wrap{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}.viewer-wrap::-webkit-scrollbar{width:10px;height:10px}.viewer-wrap::-webkit-scrollbar-track{background:0 0}.viewer-wrap::-webkit-scrollbar-thumb{background:var(--border-strong);background-clip:content-box;border:2px solid #0000;border-radius:6px}.viewer-wrap::-webkit-scrollbar-thumb:hover{background:var(--text-muted);background-clip:content-box}.at-selection,.at-selection div,.at-cursor-beat,.at-cursor-note{box-shadow:none!important;background:0 0!important;border:none!important;display:none!important}