*{box-sizing:border-box;margin:0;padding:0}body{color:#333;background:#f8f9fa;font-family:Nunito,sans-serif;font-size:14px}.app{margin:0;padding:0 8px 8px}.top-bar{z-index:100;background:#fff;border-bottom:1px solid #e0e0e0;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin:0 -8px 8px;padding:8px 12px;display:flex;position:sticky;top:0;box-shadow:0 2px 8px #0000000f}.top-bar-title{color:#5c6bc0;white-space:nowrap;cursor:pointer;font-size:15px;font-weight:800}.top-bar-title:hover{opacity:.7}.top-bar-center{align-items:center;gap:8px;margin:0 auto;display:flex}.top-bar-right{align-items:center;gap:8px;display:flex}.channel-selector,.playback-controls,.toolbar-group{background:#eceff1;border:1px solid #b0bec5;border-radius:6px;gap:0;display:flex}.channel-selector>:first-child,.playback-controls>:first-child,.toolbar-group>:first-child{border-radius:5px 0 0 5px!important}.channel-selector>:last-child,.playback-controls>:last-child,.toolbar-group>:last-child{border-radius:0 5px 5px 0!important}.zoom-control{background:#eceff1;border:1px solid #b0bec5;border-radius:6px;align-items:center;gap:0;display:flex}.zoom-btn{color:#546e7a;cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;width:28px;height:28px;padding:0;font-family:inherit;font-size:14px;font-weight:700;line-height:1;transition:background .15s;display:flex}.zoom-btn:first-child{border-right:1px solid #b0bec5;border-radius:5px 0 0 5px}.zoom-btn:last-child{border-left:1px solid #b0bec5;border-radius:0 5px 5px 0}.zoom-btn:hover:not(:disabled){background:#0000000f}.zoom-btn:disabled{opacity:.3;cursor:not-allowed}.zoom-label{color:#546e7a;text-align:center;-webkit-user-select:none;user-select:none;min-width:36px;font-size:11px;font-weight:600}[data-tooltip]{position:relative}[data-tooltip]:hover:after{content:attr(data-tooltip);color:#fff;white-space:nowrap;z-index:1000;pointer-events:none;background:#000c;border-radius:4px;padding:4px 10px;font-size:11px;font-weight:400;position:absolute;top:calc(100% + 6px);left:50%;transform:translate(-50%)}.ch-btn{color:#546e7a;cursor:pointer;background:0 0;border:none;border-right:1px solid #b0bec5;padding:8px 11px;font-family:inherit;font-size:12px;font-weight:700;transition:all .15s;position:relative;border-radius:0!important}.ch-btn:last-child{border-right:none}.ch-btn:hover{background:#0000000f}.ch-btn.active{color:#fff;background:#26a69a}.ch-btn.muted{color:#bbb;background:#e8e8e8}.ch-btn.ch-all.active{color:#fff;background:#ef6c00}.solo-label{opacity:.9;font-size:8px;line-height:1;position:absolute;bottom:1px;left:50%;transform:translate(-50%)}.mode-selector{background:#eceff1;border:1px solid #b0bec5;border-radius:6px;gap:0;display:flex}.mode-btn{cursor:pointer;background:0 0;border:none;border-right:1px solid #b0bec5;padding:4px 8px;font-size:20px;line-height:24px;transition:all .15s;border-radius:0!important}.mode-btn:first-child{border-radius:5px 0 0 5px!important}.mode-btn:last-child{border-right:none;border-radius:0 5px 5px 0!important}.mode-btn:hover:not(:disabled){background:#0000000f}.mode-btn.active{color:#fff;background:#5c6bc0}.mode-btn:disabled{opacity:.35;cursor:default}.ch4-label-btn{color:#fff;cursor:pointer;background:#26a69a;border:1px solid #b0bec5;border-radius:4px;margin:2px 0 2px 8px;padding:5px 11px;font-size:12px;font-weight:700;position:relative}.ch4-label-btn:hover{background:#2bbbad}.ch4-label-btn.muted{color:#bbb;background:#e8e8e8}.pb-btn,.tb-btn{color:#546e7a;cursor:pointer;background:0 0;border:none;border-right:1px solid #b0bec5;padding:2px 10px;font-family:inherit;font-size:20px;font-weight:700;line-height:28px;transition:all .15s;border-radius:0!important}.pb-btn:last-child,.tb-btn:last-child{border-right:none}.pb-btn:hover,.tb-btn:hover{background:#0000000f}.pb-btn:disabled,.tb-btn:disabled{opacity:.35;cursor:not-allowed}.pb-btn.play-btn{color:#fff;background:#66bb6a}.pb-btn.play-btn:hover{background:#4caf50}.pb-btn.stop-btn{color:#fff;background:#ef5350}.pb-btn.stop-btn:hover{background:#e53935}.pb-btn.rewind-btn,.pb-btn.play-btn,.pb-btn.stop-btn{padding:5px 12px;font-size:14px;line-height:normal}.pb-btn.loop-btn{padding:0 10px;font-size:22px;line-height:28px}.pb-btn.loop-btn.active{color:#fff;background:#42a5f5}.reset-btn{color:#ef5350;cursor:pointer;background:0 0;border:1px solid #ef5350;border-radius:12px;padding:5px 14px;font-size:14px;font-weight:600;transition:background .15s}.reset-btn:hover{background:#ffebee}.feedback-btn{padding:0 6px;font-size:24px;line-height:28px}.tones-btn:hover{background:#c5cae9}.locator-area{cursor:pointer;-webkit-user-select:none;user-select:none;height:16px;padding-left:48px;position:relative;overflow:hidden}.locator-scroll-inner{will-change:transform;height:100%;position:relative}.locator-marker{pointer-events:none;filter:drop-shadow(0 0 2px #42a5f580);font-size:12px;line-height:16px;position:absolute;top:-2px;transform:translate(-6px)}.locator-preview{opacity:.35;filter:none}.piano-roll-container{overscroll-behavior-x:none;scrollbar-width:thin;scrollbar-color:silver transparent;overflow:auto hidden}.piano-roll-v-scroll{min-width:fit-content;min-height:200px;max-height:calc(100vh - 300px);transition:max-height .2s;overflow:clip auto}.piano-roll-container.rhythm-collapsed .piano-roll-v-scroll{max-height:calc(100vh - 240px)}.piano-roll-container::-webkit-scrollbar{width:6px;height:6px}.piano-roll-container::-webkit-scrollbar-track{background:0 0}.piano-roll-container::-webkit-scrollbar-thumb{background:silver;border-radius:3px}.piano-roll-container::-webkit-scrollbar-thumb:hover{background:#999}.piano-roll-v-scroll{scrollbar-width:thin;scrollbar-color:silver transparent}.piano-roll-v-scroll::-webkit-scrollbar{width:6px}.piano-roll-v-scroll::-webkit-scrollbar-track{background:0 0}.piano-roll-v-scroll::-webkit-scrollbar-thumb{background:silver;border-radius:3px}.piano-roll-v-scroll::-webkit-scrollbar-thumb:hover{background:#999}.piano-roll{cursor:crosshair;display:block}.piano-roll-wrapper{padding-right:56px;display:inline-block;position:relative}.piano-roll-wrapper:focus{outline:none}.selection-toolbar{z-index:50;pointer-events:auto;background:#fff;border:1px solid #e0e0e0;border-radius:10px;gap:2px;padding:4px;display:flex;position:absolute;box-shadow:0 2px 12px #0000001f}.selection-toolbar button{cursor:pointer;background:#f5f5f5;border:none;border-radius:8px;justify-content:center;align-items:center;width:28px;height:28px;padding:0;font-size:14px;transition:background .15s;display:flex}.selection-toolbar button:hover{background:#e0e0e0}.drag-hint{pointer-events:none;color:#fff;white-space:nowrap;z-index:10;background:#000000bf;border-radius:4px;padding:3px 8px;font-size:11px;position:absolute}.note-hover-tooltip{pointer-events:none;color:#fff;white-space:nowrap;z-index:10;background:#000c;border-radius:4px;padding:4px 10px;font-size:11px;font-weight:400;position:absolute}.drop-overlay{z-index:200;pointer-events:none;background:#5c6bc026;border:3px dashed #5c6bc0;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.drop-overlay-text{color:#5c6bc0;background:#fff;border-radius:12px;padding:16px 32px;font-size:18px;font-weight:700;box-shadow:0 4px 16px #0000001f}.step-params-area{margin-top:4px}.step-params-editor{padding:4px 0}.step-param-row{align-items:center;display:flex}.step-param-label{color:#777;-webkit-user-select:none;user-select:none;z-index:3;background:#fff;justify-content:flex-end;align-items:center;gap:1px;width:48px;min-width:48px;height:22px;padding-right:2px;font-size:10px;font-weight:600;display:flex;position:sticky;left:0;box-shadow:2px 0 4px -1px #00000014}.step-param-label-text{text-align:right;flex:1}.step-param-label-value{border-radius:3px;justify-content:center;align-items:center;min-width:22px;height:18px;padding:0 3px;font-size:10px;font-weight:700;display:inline-flex}.step-param-label-value-q{color:#e65100;background:#fff3e0}.step-param-label-value-vol{color:#43a047;background:#e8f5e9}.step-param-cells{scrollbar-width:none;gap:0;display:flex;overflow:visible}.step-param-cells::-webkit-scrollbar{display:none}.step-cell{cursor:pointer;-webkit-user-select:none;user-select:none;border:1px solid #e0e0e040;border-radius:0;justify-content:center;align-items:center;width:28px;min-width:28px;height:22px;font-size:11px;font-weight:700;transition:filter .1s;display:flex}.step-cell.first{border-radius:4px 0 0 4px}.step-cell.last{border-radius:0 4px 4px 0}.step-cell:hover{filter:brightness(.92)}.cell-fixed-tooltip{pointer-events:none;color:#fff;white-space:nowrap;z-index:1000;background:#000c;border-radius:4px;padding:4px 10px;font-size:11px;font-weight:400}.step-cell.inherited{opacity:.5}.step-cell.vol-cell{color:#2e7d32;background:#e8f5e9}.step-cell.vol-cell.set{color:#1b5e20;background:#c8e6c9}.step-cell.q-cell{color:#e65100;background:#fff3e0}.step-cell.q-cell.set{color:#bf360c;background:#ffe0b2}.cell-dropdown{background:#fff;border:1px solid #e0e0e0;border-radius:12px;min-width:80px;max-height:240px;overflow-y:auto;box-shadow:0 4px 16px #0000001f}.cell-dropdown-item{color:#333;cursor:pointer;white-space:nowrap;border-left:3px solid #0000;padding:4px 8px;font-family:inherit;font-size:11px}.cell-dropdown-item:hover{background:#f0f0f0}.cell-dropdown-item.inherit{color:#aaa;font-style:italic}.param-group{align-items:center;gap:4px;display:flex}.param-group label{color:#777;font-size:12px;font-weight:600}.param-group input[type=number]{color:#333;text-align:center;background:#fff;border:1px solid #d0d0d0;border-radius:8px;width:54px;padding:3px 4px;font-family:inherit;font-size:13px}.param-group select{color:#333;background:#fff;border:1px solid #d0d0d0;border-radius:8px;padding:3px 4px;font-family:inherit;font-size:13px}.modal-overlay{z-index:200;background:#0000004d;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{background:#fff;border:none;border-radius:16px;width:90%;max-width:600px;max-height:80vh;overflow-y:auto;box-shadow:0 8px 32px #00000026}.modal-header{color:#333;letter-spacing:1px;background:#f5f5f5;border-radius:16px 16px 0 0;justify-content:space-between;align-items:center;padding:10px 16px;font-size:13px;font-weight:700;display:flex}.modal-close{color:#999;cursor:pointer;background:0 0;border:none;border-radius:8px;padding:2px 6px;font-size:16px}.modal-close:hover{color:#333;background:#e0e0e0}.update-modal-overlay{z-index:10000}.update-modal-content{max-width:420px}.update-modal-body{padding:20px}.update-version{color:#333;margin:0 0 12px;font-size:15px;font-weight:600}.update-notes{color:#555;white-space:pre-wrap;background:#f5f5f5;border-radius:8px;max-height:120px;margin-bottom:16px;padding:12px;font-size:13px;overflow-y:auto}.update-actions{flex-direction:column;gap:8px;display:flex}.update-btn{cursor:pointer;border:none;border-radius:8px;padding:10px 16px;font-family:inherit;font-size:13px;transition:background .15s}.update-btn-primary{color:#fff;background:#4a90d9;font-weight:600}.update-btn-primary:hover{background:#3a7bc8}.update-btn-secondary{color:#333;background:#e8e8e8}.update-btn-secondary:hover{background:#ddd}.update-btn-skip{color:#999;background:0 0;font-size:12px}.update-btn-skip:hover{color:#666}.update-progress-bar{background:#e8e8e8;border-radius:4px;width:100%;height:8px;margin:12px 0 8px;overflow:hidden}.update-progress-fill{background:#4a90d9;border-radius:4px;height:100%;transition:width .2s}.update-progress-text{text-align:center;color:#666;margin:0;font-size:13px}.instrument-panel{padding:8px}.inst-grid-16{grid-template-columns:repeat(4,1fr);gap:4px;margin-bottom:10px;display:grid}.inst-btn{color:#333;cursor:pointer;background:#fff;border:2px solid #e0e0e0;border-radius:10px;align-items:center;gap:4px;padding:5px 8px;font-family:inherit;font-size:11px;transition:all .1s;display:flex}.inst-btn:hover{background:#f5f5f5}.inst-btn.selected{background:#e8eaf6;box-shadow:0 0 0 2px #5c6bc0}.inst-idx{color:#5c6bc0;min-width:12px;font-size:12px;font-weight:700}.inst-name{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.inst-params{background:#fafafa;border-radius:12px;padding:8px}.inst-param-row{align-items:center;gap:8px;margin-bottom:6px;display:flex}.inst-param-row:last-child{margin-bottom:0}.inst-param-row label{color:#777;text-align:right;min-width:40px;font-size:11px;font-weight:600}.inst-param-row input[type=text]{color:#333;background:#fff;border:1px solid #d0d0d0;border-radius:8px;width:140px;padding:2px 6px;font-family:inherit;font-size:12px}.inst-param-row input[type=range]{accent-color:#5c6bc0;width:80px}.param-value{color:#5c6bc0;text-align:right;min-width:28px;font-size:12px;font-weight:600}.tone-btns{gap:2px;display:flex}.tone-btns button{color:#5c6bc0;cursor:pointer;background:#e8eaf6;border:none;border-radius:8px;padding:2px 8px;font-family:inherit;font-size:11px;font-weight:700}.tone-btns button:hover{background:#c5cae9}.tone-btns button.active{color:#fff;background:#5c6bc0}.measure-headers{align-items:center;margin-bottom:2px;display:flex}.measure-spacer{flex-shrink:0;width:48px;min-width:48px}.measure-scroll-wrapper{flex:1;min-width:0;overflow:hidden}.measure-scroll-inner{will-change:transform;display:flex}.measure-header-cell{border-top:1px solid #b0bec5;border-bottom:1px solid #b0bec5;border-right:1px solid #b0bec5}.measure-header-cell.first{border-left:1px solid #b0bec5;border-radius:5px 0 0 5px}.measure-header-cell.last{border-radius:0 5px 5px 0}.measure-header-cell.first.last{border-radius:5px}.measure-header-btn{border-radius:inherit;color:#546e7a;cursor:pointer;-webkit-user-select:none;user-select:none;background:#eceff1;border:none;justify-content:center;align-items:center;height:20px;padding:0 4px;font-family:inherit;font-size:10px;font-weight:600;transition:background .1s;display:flex}.measure-header-btn:hover{background:#0000000f}.measure-header-btn.has-override{color:#e65100;background:#fff3e0}.meas-control{background:#eceff1;border:1px solid #b0bec5;border-radius:6px;flex-shrink:0;align-items:center;gap:0;margin-left:8px;display:flex}.meas-btn{color:#546e7a;cursor:pointer;background:0 0;border:none;border-right:1px solid #b0bec5;border-radius:0;justify-content:center;align-items:center;width:22px;height:20px;padding:0;font-family:inherit;font-size:14px;font-weight:700;line-height:1;transition:background .15s;display:flex}.meas-btn:last-child{border-right:none}.meas-btn:first-child{border-radius:5px 0 0 5px}.meas-btn:last-child{border-radius:0 5px 5px 0}.meas-btn:hover:not(:disabled){background:#0000000f}.meas-btn:disabled{opacity:.3;cursor:not-allowed}.measure-settings-popup{background:#fff;border:1px solid #e0e0e0;border-radius:12px;min-width:160px;padding:8px;box-shadow:0 4px 16px #0000001a}.measure-setting-row{align-items:center;gap:6px;margin-bottom:6px;display:flex}.measure-setting-row label{color:#777;text-align:right;min-width:32px;font-size:11px;font-weight:600}.measure-setting-row select{color:#333;background:#fff;border:1px solid #d0d0d0;border-radius:8px;flex:1;padding:2px 4px;font-family:inherit;font-size:11px}.measure-reset-btn{color:#999;cursor:pointer;background:0 0;border:1px solid #d0d0d0;border-radius:8px;width:100%;margin-top:4px;padding:3px 8px;font-family:inherit;font-size:10px;font-weight:600;transition:background .15s}.measure-reset-btn:hover{color:#333;background:#f0f0f0}.about-modal{max-width:480px}.about-body{padding:20px 24px}.about-body h2{color:#333;margin-bottom:12px;font-size:18px;font-weight:800}.about-body p{color:#555;margin-bottom:12px;font-size:13px;line-height:1.7}.about-body .about-version{color:#999;margin-bottom:16px;font-size:12px}.about-body .about-tech{color:#aaa;margin-bottom:0;font-size:11px}.rhythm-editor-area{border-top:2px solid #b0bec5;margin-top:6px;padding-top:2px}.rhythm-header{z-index:3;background:#fff;align-items:center;gap:0;width:fit-content;display:flex;position:sticky;left:0}.rhythm-collapse-btn{margin-left:6px;padding:5px 10px;font-size:16px}.drum-toggle-group{background:#eceff1;border:1px solid #b0bec5;border-radius:6px;gap:0;margin-left:6px;animation:.2s fadeSlideIn;display:flex}@keyframes fadeSlideIn{0%{opacity:0;transform:translate(-8px)}to{opacity:1;transform:translate(0)}}.drum-toggle-group>:first-child{border-radius:5px 0 0 5px!important}.drum-toggle-group>:last-child{border-radius:0 5px 5px 0!important}.drum-toggle-btn{cursor:pointer;text-align:center;color:#546e7a;background:0 0;border:none;border-right:1px solid #b0bec5;min-width:32px;padding:5px 8px;font-size:12px;font-weight:600;line-height:1;border-radius:0!important}.drum-toggle-group>.drum-toggle-btn:last-child{border-right:none}.drum-toggle-btn:hover{background:#0000000f}.drum-toggle-btn.active{color:#fff}.rhythm-editor-area .rhythm-label{color:#546e7a;letter-spacing:.5px;padding:2px 0 2px 8px;font-size:11px;font-weight:700}.rhythm-editor{padding:4px 0}.rhythm-cell{transition:filter .1s;height:20px!important;font-size:10px!important}.rhythm-cell.playback{filter:brightness(1.3);box-shadow:inset 0 0 0 2px #0000004d}.step-cell.col-selected{box-shadow:inset 0 0 0 2px #42a5f5b3}.step-cell.col-dest{box-shadow:inset 0 0 0 2px #66bb6ab3}.rhythm-selection-overlay{pointer-events:none;z-index:5;background:#42a5f514;border:2px solid #42a5f5cc;border-radius:3px;position:absolute}.rhythm-dest-overlay{pointer-events:none;z-index:5;background:#66bb6a14;border:2px dashed #66bb6acc;border-radius:3px;position:absolute}.step-cell.beat-border{border-left:1px solid #0000001f}.step-cell.measure-border{border-left:2px solid #0000004d}.step-cell.locator{border-left:2px solid #42a5f5}.inst-readonly-notice{text-align:center;color:#999;padding:16px;font-size:12px;font-style:italic}.toast-notification{color:#fff;z-index:10000;pointer-events:none;background:#4a9eff;border-radius:6px;padding:10px 24px;font-size:13px;animation:.3s toast-fade-in,.5s 2.5s forwards toast-fade-out;position:fixed;bottom:24px;left:50%;transform:translate(-50%);box-shadow:0 4px 12px #0000004d}@keyframes toast-fade-in{0%{opacity:0;transform:translate(-50%)translateY(12px)}to{opacity:1;transform:translate(-50%)translateY(0)}}@keyframes toast-fade-out{0%{opacity:1}to{opacity:0}}.init-modal-content{max-width:640px}.init-modal-body{padding:20px}.init-select-buttons{justify-content:center;gap:16px;display:flex}.init-select-btn{cursor:pointer;text-align:center;background:#fff;border:2px solid #e0e0e0;border-radius:12px;flex:1;max-width:240px;padding:24px 16px;transition:border-color .15s,box-shadow .15s}.init-select-btn:hover{border-color:#5c6bc0;box-shadow:0 2px 8px #5c6bc033}.init-select-icon{margin-bottom:8px;font-size:32px}.init-select-label{color:#333;margin-bottom:4px;font-size:16px;font-weight:700}.init-select-desc{color:#888;font-size:12px}.init-form{max-width:360px;margin:0 auto}.init-form-row{align-items:center;margin-bottom:12px;display:flex}.init-form-row label{color:#555;width:80px;font-size:13px;font-weight:600}.init-form-row select{background:#fff;border:1px solid #ccc;border-radius:6px;flex:1;padding:6px 8px;font-size:13px}.init-hint{color:#888;background:#f5f5f5;border-radius:6px;margin:12px 0;padding:8px 12px;font-size:11px;line-height:1.5}.init-action-btn{color:#fff;cursor:pointer;background:#5c6bc0;border:none;border-radius:8px;width:100%;margin-top:12px;padding:10px;font-size:14px;font-weight:600;display:block}.init-action-btn:hover{background:#4a5ab8}.init-action-btn:disabled{cursor:not-allowed;background:#b0b0b0}.init-tabs{border-bottom:2px solid #e0e0e0;margin-bottom:16px;display:flex}.init-tab{color:#888;cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;flex:1;margin-bottom:-2px;padding:8px 4px;font-size:12px;font-weight:600}.init-tab.active{color:#5c6bc0;border-bottom-color:#5c6bc0}.init-tab:hover:not(.active){color:#555}.init-auto-content{min-height:240px}.init-param-group{margin-bottom:14px}.init-param-group>label{color:#555;margin-bottom:6px;font-size:12px;font-weight:600;display:block}.init-param-detail{color:#888;margin-top:4px;font-size:11px}.init-btn-grid{flex-wrap:wrap;gap:4px;display:flex}.init-btn-list{flex-direction:column;gap:4px;display:flex}.init-param-btn,.init-param-btn-wide{cursor:pointer;color:#333;text-align:center;background:#fff;border:1px solid #d0d0d0;border-radius:4px;min-width:36px;padding:5px 10px;font-size:12px}.init-param-btn-wide{padding:5px 14px}.init-param-btn.selected,.init-param-btn-wide.selected{color:#fff;background:#5c6bc0;border-color:#5c6bc0}.init-param-btn:hover:not(.selected):not(.disabled),.init-param-btn-wide:hover:not(.selected):not(.disabled){border-color:#5c6bc0}.init-param-btn.disabled,.init-param-btn-wide.disabled{opacity:.4;cursor:not-allowed}.init-auto-actions{margin-top:16px}.init-auto-btn-row{gap:8px;display:flex}.init-auto-btn-row .init-action-btn{flex:1;width:auto;min-width:0;margin-top:0}.init-play-btn{background:#66bb6a!important;flex:0 0 100px!important}.init-play-btn:hover{background:#4caf50!important}.init-accept-btn-small{background:#26a69a!important;flex:none!important;width:auto!important;padding:6px 16px!important;font-size:13px!important}.init-accept-btn-small:hover{background:#00897b!important}