:root{color-scheme:light;--ink:#1b2840;--muted:#7e8ba2;--soft:#f4f7fd;--line:#e4eaf4;--blue:#397ce8;--blue2:#6a78ed;--violet:#8b78ed;--mint:#30bba7;--panel:#fff;--shadow:0 8px 28px rgba(39,66,112,.055)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:linear-gradient(180deg,#f2f6ff 0,#f7f9fd 360px,#f7f9fd 100%);color:var(--ink);font:14px/1.55 Inter,"Noto Sans JP","Segoe UI",sans-serif}button,input{font:inherit}button{cursor:pointer;color:inherit}button:disabled{opacity:.38;cursor:not-allowed}.topbar{height:76px;padding:0 clamp(16px,4vw,56px);display:flex;align-items:center;justify-content:space-between;gap:18px;background:rgba(255,255,255,.9);border-bottom:1px solid #e8edf6;position:sticky;top:0;z-index:20;backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:11px;min-width:max-content;text-decoration:none;color:var(--ink)}.brand-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(145deg,#458cf1,#8173e8);display:grid;place-items:center;color:white;font-size:25px;box-shadow:0 7px 16px #6486e833}.brand-copy strong{display:block;font-size:19px;line-height:1.1;letter-spacing:-.7px}.brand-copy strong b{color:var(--blue)}.brand-copy small{display:block;margin-top:4px;color:#9aa6b8;font-size:8px;font-weight:800;letter-spacing:2px}.topbar-right{display:flex;align-items:center;gap:9px}.local-badge{display:flex;align-items:center;gap:7px;color:#7c8ba2;font-size:11px;font-weight:600;margin-right:8px;white-space:nowrap}.local-badge i,.engine-indicator i{width:7px;height:7px;border-radius:50%;background:#39c4a6;box-shadow:0 0 0 4px #39c4a61a}.button{border:1px solid #e1e8f2;background:#fff;border-radius:11px;padding:10px 14px;color:#52627b;font-weight:700;font-size:12px;box-shadow:0 2px 6px #203b6410;transition:.18s}.button:hover:not(:disabled){border-color:#b9cdf0;background:#f8fbff;transform:translateY(-1px)}.button.primary{background:linear-gradient(110deg,#397fe9,#746fe8);border-color:transparent;color:white;box-shadow:0 6px 14px #507fe833}.button.primary:hover:not(:disabled){background:linear-gradient(110deg,#2f72db,#685fdd)}.button-icon{font-size:17px;vertical-align:-1px;margin-right:4px}.export-button{color:#5374bb}.page-shell{max-width:1560px;margin:0 auto;padding:28px clamp(14px,3.5vw,48px) 24px}.welcome-strip{min-height:150px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;padding:25px 34px;margin-bottom:22px;border:1px solid #e6edfb;border-radius:21px;background:linear-gradient(105deg,#fff 0%,#fff 52%,#f0f4ff 100%);box-shadow:var(--shadow)}.welcome-copy{position:relative;z-index:2}.eyebrow,.section-kicker{font-size:9px;letter-spacing:1.8px;color:#8a9ab4;font-weight:800}.eyebrow{display:flex;align-items:center;gap:8px;color:#6d84ae}.eyebrow-line{height:2px;width:19px;border-radius:2px;background:linear-gradient(90deg,var(--blue),var(--violet))}.welcome-copy h1{font-size:25px;letter-spacing:-1px;margin:8px 0 4px;font-weight:800}.welcome-copy p{font-size:12px;color:#8190a8;margin:0}.welcome-art{position:absolute;right:8%;top:-40px;width:260px;height:230px;display:grid;place-items:center;opacity:.9}.art-orbit{position:absolute;border:1px solid #cbd9fc;border-radius:50%;transform:rotate(-25deg)}.orbit-one{width:230px;height:112px}.orbit-two{width:190px;height:160px;transform:rotate(40deg);border-color:#d9d0fc}.art-note{width:94px;height:94px;border-radius:30px;background:linear-gradient(145deg,#dceaff,#e9e3ff);display:grid;place-items:center;color:#647ce1;font-size:56px;box-shadow:inset 0 0 0 1px #fff,0 14px 30px #90a7dc36;transform:rotate(-8deg)}.art-spark{position:absolute;color:#8d83ed;font-size:22px}.spark-one{top:52px;right:52px}.spark-two{bottom:43px;left:33px;color:#71b9ed}.app-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:20px;align-items:start}.sidebar,.workspace{display:flex;flex-direction:column;gap:16px;min-width:0}.panel{background:var(--panel);border:1px solid #e8edf5;border-radius:17px;box-shadow:var(--shadow)}.playlist-panel,.sound-panel{padding:18px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.panel-heading h2,.mixer-heading h2{font-size:15px;letter-spacing:-.3px;margin:3px 0 0;font-weight:800}.icon-button{height:30px;width:30px;border:1px solid #e9eef6;border-radius:9px;background:#fff;color:#91a0b6;font-size:17px}.icon-button:hover{background:#f5f8ff;color:#5d7fbd}.playlist{max-height:365px;overflow:auto;min-height:150px}.playlist.empty-state{display:grid;place-items:center;text-align:center;padding:22px 10px;color:#9ba8bb;font-size:11px;background:#f9fbff;border:1px dashed #e0e8f4;border-radius:12px}.playlist-item{width:100%;display:flex;align-items:center;gap:10px;text-align:left;border:1px solid transparent;background:transparent;padding:10px 9px;border-radius:11px;margin-bottom:4px;transition:.15s}.playlist-item:hover{background:#f7f9fe}.playlist-item.active{background:#eef4ff;border-color:#dce8ff}.file-icon{width:35px;height:35px;flex:none;border-radius:10px;background:linear-gradient(145deg,#e4efff,#eeeaff);color:#627de0;display:grid;place-items:center;font-size:19px}.playlist-item.active .file-icon{background:linear-gradient(145deg,#4b8af0,#8178ea);color:#fff}.file-name{display:block;max-width:185px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11px;font-weight:700;color:#43536c}.file-sub{display:block;margin-top:2px;font-size:9px;color:#9aa7ba}.sidebar-footnote{display:flex;align-items:flex-start;gap:8px;padding-top:13px;margin-top:10px;border-top:1px solid #eef1f6;font-size:9px;color:#96a3b6;line-height:1.6}.shield-icon{color:#53a79d;font-size:14px;line-height:1}.compact-heading{margin-bottom:13px}.engine-indicator{display:flex;align-items:center;gap:7px;color:#74a99c;font-size:8px;font-weight:800;letter-spacing:1px}.engine-indicator i{width:6px;height:6px}.soundfont-card{display:flex;align-items:center;gap:11px;padding:11px;background:#f7f9ff;border:1px solid #eaf0fb;border-radius:12px}.soundfont-icon{width:36px;height:36px;border-radius:10px;background:linear-gradient(145deg,#e0eaff,#eee9ff);color:#647ce0;display:grid;place-items:center;font-size:19px}.soundfont-copy strong{display:block;font-size:11px;color:#4c5e7b}.soundfont-copy span{display:block;font-size:9px;color:#9aa7ba;margin-top:2px}.sound-status{min-height:30px;margin:11px 1px 9px;font-size:10px;line-height:1.6;color:#8795aa;overflow-wrap:anywhere}.button.full{width:100%}.test-button{background:#f4f7ff;border-color:#e1eaff;color:#5777bc}.test-button:hover:not(:disabled){background:#edf3ff;border-color:#c8d9ff}.text-button{display:block;margin:9px auto 0;padding:4px 8px;border:0;background:transparent;color:#95a2b5;font-size:10px}.text-button:hover{color:#5579bd}.now-playing-panel{padding:20px 22px;display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,42%);gap:24px;align-items:center;min-height:150px}.now-playing-main{display:flex;align-items:center;gap:16px;min-width:0}.cover-art{width:78px;height:78px;flex:none;position:relative;overflow:hidden;border-radius:18px;background:linear-gradient(145deg,#4b91ee 0%,#6d7ce7 55%,#9474e8 100%);display:grid;place-items:center;color:white;font-size:40px;box-shadow:0 9px 22px #708ce533}.cover-art i{position:absolute;width:65px;height:65px;border:1px solid #ffffff50;border-radius:50%;right:-28px;top:-25px}.track-info{min-width:0}.track-info h2{font-size:17px;margin:7px 0 3px;letter-spacing:-.4px;overflow-wrap:anywhere}.muted{color:#93a0b4;font-size:10px;margin:0}.transport-area{min-width:0}.transport-buttons{display:flex;align-items:center;justify-content:center;gap:18px;margin-bottom:12px}.transport-button,.play-button{border:0;background:transparent;color:#8593aa;font-size:15px;width:28px;height:30px;border-radius:9px}.transport-button:hover{background:#f1f5fc;color:#5877b8}.stop-button{font-size:13px}.play-button{width:43px;height:43px;border-radius:50%;background:linear-gradient(140deg,#438cf0,#786fe5);color:white;font-size:17px;box-shadow:0 6px 14px #6387e84a}.play-button:hover:not(:disabled){transform:scale(1.05)}.progress-row{display:flex;align-items:center;gap:9px;color:#92a0b4;font-size:9px;font-variant-numeric:tabular-nums}.progress-row input{flex:1;min-width:0}.mixer-panel{padding:17px 21px 14px}.mixer-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.mixer-hint{font-size:9px;color:#a1adbf}.mixer-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.slider-control label{display:flex;align-items:center;gap:7px;margin-bottom:10px}.slider-label{flex:1;font-size:10px;color:#718099;font-weight:700}.slider-control label b{font-size:10px;color:#5579c5;font-variant-numeric:tabular-nums}.slider-icon{display:grid;place-items:center;width:23px;height:23px;border-radius:7px;background:#eef4ff;color:#6483cf;font-size:12px}.volume-icon{background:#f0efff;color:#8373d9}.zoom-icon{background:#edf8f7;color:#48a998}input[type=range]{width:100%;height:5px;margin:0;accent-color:#6289e7;cursor:pointer}.slider-scale{display:flex;justify-content:space-between;margin-top:5px;color:#aab4c3;font-size:8px}.piano-panel,.tracks-panel{padding:18px 19px}.piano-heading,.tracks-heading{margin-bottom:13px}.info-pill{display:inline-flex;align-items:center;min-height:25px;padding:4px 9px;border:1px solid #e5ecf8;border-radius:8px;background:#f8faff;color:#8292ab;font-size:9px;font-weight:600;white-space:nowrap}.roll-wrap{width:100%;overflow:auto;background:#f8fbff;border:1px solid #e2eaf5;border-radius:11px}.roll-wrap canvas{display:block;width:100%;height:auto;min-width:900px}.legend{display:flex;align-items:center;justify-content:space-between;margin-top:9px;color:#a0adbf;font-size:9px}.legend span:first-child{display:flex;align-items:center;gap:6px}.legend-note{width:10px;height:7px;border-radius:3px;background:#648ee8}.tracks-empty{padding:17px 2px;color:#99a6b8;font-size:11px}.track-row{display:grid;grid-template-columns:minmax(130px,1.1fr) minmax(85px,.5fr) minmax(180px,1.5fr) 76px;align-items:center;gap:12px;padding:11px 3px;border-top:1px solid #f0f3f8}.track-title{font-size:11px;font-weight:700;color:#50617c;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.track-detail{font-size:9px;color:#99a6b9}.track-row select{width:100%;min-width:0;padding:8px 9px;background:#fbfcff;color:#60708a;border:1px solid #e5ebf4;border-radius:9px;font-size:10px;outline:none}.track-row select:focus{border-color:#9ab6ef;box-shadow:0 0 0 3px #6b94e71a}.mute-label{font-size:10px;color:#8c9ab0;display:flex;align-items:center;gap:5px;white-space:nowrap}.mute-label input{accent-color:#678ae2}.page-footer{display:flex;align-items:center;justify-content:center;gap:9px;padding:2px 0 8px;color:#a2adbd;font-size:9px}.footer-brand{font-weight:800;letter-spacing:1.5px;color:#7186b0}.footer-dot{font-size:6px;color:#8b7de0}.toast{position:fixed;bottom:22px;left:50%;transform:translate(-50%,18px);opacity:0;pointer-events:none;max-width:min(92vw,540px);padding:11px 17px;border:1px solid #d9e4f7;border-radius:12px;background:#fff;color:#52647f;box-shadow:0 10px 30px #293f671c;transition:.22s;z-index:30;font-size:11px;text-align:center}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1100px){.app-layout{grid-template-columns:245px minmax(0,1fr)}.now-playing-panel{grid-template-columns:1fr;gap:14px}.transport-area{max-width:460px;width:100%;justify-self:center}.welcome-art{right:1%}}
@media(max-width:800px){.topbar{height:auto;min-height:70px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}.topbar-right{width:100%;overflow-x:auto;padding-bottom:2px}.local-badge{display:none}.page-shell{padding-top:18px}.app-layout{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:1fr 1fr;align-items:start}.playlist{max-height:220px}.welcome-strip{min-height:130px;padding:22px}.welcome-art{right:-35px;opacity:.55}.track-row{grid-template-columns:minmax(100px,1fr) minmax(65px,.4fr) minmax(150px,1.3fr) 70px}}
@media(max-width:580px){.brand-copy strong{font-size:17px}.topbar-right{gap:6px}.button{font-size:10px;padding:9px 10px;white-space:nowrap}.page-shell{padding:12px 10px 20px}.welcome-strip{padding:18px 17px;min-height:125px}.welcome-copy h1{font-size:21px}.welcome-copy p{max-width:245px;font-size:10px}.welcome-art{right:-100px}.sidebar{grid-template-columns:1fr;gap:11px}.playlist-panel,.sound-panel{padding:15px}.now-playing-panel{padding:15px}.cover-art{width:61px;height:61px;border-radius:15px;font-size:32px}.track-info h2{font-size:14px}.transport-buttons{gap:17px}.mixer-panel,.piano-panel,.tracks-panel{padding:15px}.mixer-controls{grid-template-columns:1fr;gap:15px}.mixer-heading h2,.panel-heading h2{font-size:14px}.mixer-hint{display:none}.roll-wrap canvas{min-width:820px}.track-row{grid-template-columns:minmax(0,1fr) minmax(70px,.5fr);gap:7px;padding:12px 1px}.track-row>div:nth-child(2){text-align:right}.track-row select{grid-column:1/3}.track-row .mute-label{grid-column:1/3}.legend{font-size:8px}.page-footer{flex-wrap:wrap;font-size:8px;gap:6px}}