:root{--bg-void: #06070a;--bg-deep: #0c0e14;--bg-surface: #13161f;--bg-elevated: #1a1e2a;--bg-hover: #222738;--gold: #c9a555;--gold-bright: #e8c46a;--gold-dim: #8a7338;--gold-glow: rgba(201, 165, 85, .15);--ivory: #f2e8d5;--ivory-soft: #d9ccb4;--ivory-dim: #9e9282;--rose: #b84040;--rose-soft: #d45c5c;--sage: #5a9e6f;--sage-soft: #7ab88a;--text-bright: #f0e8da;--text-primary: #c8bda8;--text-secondary: #7a7062;--text-muted: #4a4238;font-family:Figtree,system-ui,sans-serif;line-height:1.5;font-weight:400;color:var(--text-primary);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.font-display{font-family:Cormorant,Georgia,serif}*{margin:0;padding:0;box-sizing:border-box}body{min-width:320px;min-height:100vh;background:repeating-linear-gradient(90deg,transparent,transparent 79px,rgba(201,165,85,.025) 79px,rgba(201,165,85,.025) 80px),radial-gradient(ellipse 70% 40% at 50% -5%,rgba(201,165,85,.07) 0%,transparent 100%),var(--bg-void);background-attachment:fixed}#root{width:100%}button{font-family:inherit}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.stagger-1{animation:fadeSlideUp .7s cubic-bezier(.16,1,.3,1) .1s both}.stagger-2{animation:fadeSlideUp .7s cubic-bezier(.16,1,.3,1) .25s both}.stagger-3{animation:fadeSlideUp .7s cubic-bezier(.16,1,.3,1) .4s both}.stagger-4{animation:fadeSlideUp .7s cubic-bezier(.16,1,.3,1) .55s both}::-webkit-scrollbar{height:6px;width:6px}::-webkit-scrollbar-track{background:var(--bg-deep)}::-webkit-scrollbar-thumb{background:var(--gold-dim);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--gold)}::selection{background:#c9a5554d;color:var(--ivory)}[data-theme=light]{--bg-void: #f5f0e8;--bg-deep: #efe9de;--bg-surface: #faf6ef;--bg-elevated: #fff;--bg-hover: #f0ead8;--gold: #9a7b30;--gold-bright: #b8922a;--gold-dim: #c4aa6a;--gold-glow: rgba(154, 123, 48, .1);--ivory: #2a2520;--ivory-soft: #3a3530;--ivory-dim: #6a6258;--rose: #c04040;--rose-soft: #e05555;--sage: #3a8a55;--sage-soft: #50a868;--text-bright: #1a1510;--text-primary: #3a3328;--text-secondary: #8a7e6e;--text-muted: #c4b8a4}[data-theme=light] body{background:repeating-linear-gradient(90deg,transparent,transparent 79px,rgba(154,123,48,.04) 79px,rgba(154,123,48,.04) 80px),radial-gradient(ellipse 70% 40% at 50% -5%,rgba(154,123,48,.06) 0%,transparent 100%),var(--bg-void)}[data-theme=midnight]{--bg-void: #0a0e1a;--bg-deep: #0f1425;--bg-surface: #151c32;--bg-elevated: #1c2540;--bg-hover: #243050;--gold: #6a9fd8;--gold-bright: #8cb8ef;--gold-dim: #4a7ab0;--gold-glow: rgba(106, 159, 216, .12);--ivory: #e0e8f5;--ivory-soft: #b8c8e0;--ivory-dim: #7a8ea8;--rose: #c05070;--rose-soft: #e06888;--sage: #50a080;--sage-soft: #68b898;--text-bright: #e8f0ff;--text-primary: #a0b4d0;--text-secondary: #5a7090;--text-muted: #2a3a55}[data-theme=midnight] body{background:repeating-linear-gradient(90deg,transparent,transparent 79px,rgba(106,159,216,.02) 79px,rgba(106,159,216,.02) 80px),radial-gradient(ellipse 70% 40% at 50% -5%,rgba(106,159,216,.06) 0%,transparent 100%),var(--bg-void)}[data-theme=rosewood]{--bg-void: #110a08;--bg-deep: #1a0f0c;--bg-surface: #221612;--bg-elevated: #2c1e18;--bg-hover: #382820;--gold: #d4956a;--gold-bright: #e8b088;--gold-dim: #a06840;--gold-glow: rgba(212, 149, 106, .12);--ivory: #f0e0d0;--ivory-soft: #d8c4b0;--ivory-dim: #a08878;--rose: #c85050;--rose-soft: #e06868;--sage: #6aa070;--sage-soft: #80b888;--text-bright: #f5e8da;--text-primary: #c8aa90;--text-secondary: #806858;--text-muted: #4a3830}[data-theme=rosewood] body{background:repeating-linear-gradient(90deg,transparent,transparent 79px,rgba(212,149,106,.02) 79px,rgba(212,149,106,.02) 80px),radial-gradient(ellipse 70% 40% at 50% -5%,rgba(212,149,106,.06) 0%,transparent 100%),var(--bg-void)}[data-theme=ivory]{--bg-void: #faf5eb;--bg-deep: #f5efe3;--bg-surface: #fffcf5;--bg-elevated: #fff;--bg-hover: #f2ebdb;--gold: #8a6e30;--gold-bright: #a08028;--gold-dim: #b8a06a;--gold-glow: rgba(138, 110, 48, .08);--ivory: #1a1510;--ivory-soft: #2a2520;--ivory-dim: #5a5248;--rose: #b03535;--rose-soft: #d04848;--sage: #358045;--sage-soft: #489858;--text-bright: #100c08;--text-primary: #3a3228;--text-secondary: #8a7e6e;--text-muted: #d0c4b0}[data-theme=ivory] body{background:repeating-linear-gradient(90deg,transparent,transparent 79px,rgba(138,110,48,.04) 79px,rgba(138,110,48,.04) 80px),radial-gradient(ellipse 70% 40% at 50% -5%,rgba(138,110,48,.05) 0%,transparent 100%),var(--bg-void)}[data-theme=emerald]{--bg-void: #060e0a;--bg-deep: #0a1610;--bg-surface: #101e16;--bg-elevated: #18281e;--bg-hover: #203428;--gold: #5ac080;--gold-bright: #78d898;--gold-dim: #3a8a58;--gold-glow: rgba(90, 192, 128, .12);--ivory: #e0f0e8;--ivory-soft: #b8d8c8;--ivory-dim: #7aa890;--rose: #c06050;--rose-soft: #d88070;--sage: #50b078;--sage-soft: #68c890;--text-bright: #e8f8f0;--text-primary: #a0c8b0;--text-secondary: #587868;--text-muted: #2a4035}[data-theme=emerald] body{background:repeating-linear-gradient(90deg,transparent,transparent 79px,rgba(90,192,128,.02) 79px,rgba(90,192,128,.02) 80px),radial-gradient(ellipse 70% 40% at 50% -5%,rgba(90,192,128,.06) 0%,transparent 100%),var(--bg-void)}.piano-key{position:relative;cursor:pointer;user-select:none;-webkit-user-select:none;border-radius:0 0 6px 6px}.piano-key--white{flex:1;height:220px;background:linear-gradient(180deg,#f5ead6,#f8f0e0 4%,#faf5ec 15%,#faf5ec 80%,#efe5d2 95%,#e6dbc6);border-right:1px solid #c8bda8;border-bottom:1px solid #b8a890;z-index:1;transition:transform .04s ease,box-shadow .04s ease,background .06s ease;box-shadow:inset 0 -4px 6px #0000000a,0 2px 4px #00000026}.piano-key--white:first-child{border-radius:0 0 0 6px}.piano-key--white:last-child{border-right:none;border-radius:0 0 6px}.piano-key--white:hover{background:linear-gradient(180deg,#f0e4cc,#f5edd8 15%,#f5edd8 80%,#e8ddc5)}.piano-key--black{position:absolute;top:0;width:1.45%;height:145px;z-index:2;transform:translate(-50%);transition:transform .04s ease,box-shadow .04s ease,background .06s ease;border-radius:0 0 5px 5px;background:linear-gradient(180deg,#2e2a26,#1e1b18 8%,#171411 50%,#0e0c0a 90%,#0a0908);box-shadow:0 4px 8px #0009,0 8px 16px #0000004d,inset 0 1px #ffffff0f,inset 0 -3px 6px #0006;border:1px solid #0a0908;border-top:none}.piano-key--black:hover{background:linear-gradient(180deg,#3a3530,#252220 8%,#1c1a17 50%,#121010)}.piano-key--active.piano-key--mouse.piano-key--white{transform:scaleY(.99) translateY(1px);background:linear-gradient(180deg,#e8dcc4,#efe3cc 15%,#efe3cc 80%,#ddd0b8)!important;box-shadow:inset 0 2px 6px #0000001a,0 1px 2px #0000001a}.piano-key--active.piano-key--mouse.piano-key--black{transform:translate(-50%) scaleY(.98) translateY(2px);background:linear-gradient(180deg,#262320,#1a1816,#0d0c0a)!important;box-shadow:0 2px 4px #00000080,inset 0 1px #ffffff08,inset 0 2px 6px #00000080}.piano-key--active.piano-key--midi.piano-key--white{transform:scaleY(.99) translateY(1px);background:linear-gradient(180deg,#c4d8f0,#d0e0f5)!important;box-shadow:inset 0 2px 6px #00000014,0 0 16px #78a0dc40}.piano-key--active.piano-key--midi.piano-key--black{transform:translate(-50%) scaleY(.98) translateY(2px);background:linear-gradient(180deg,#2c4a6a,#1a3450)!important;box-shadow:0 2px 4px #00000080,0 0 12px #78a0dc4d}.piano-key--active.piano-key--song.piano-key--white{transform:scaleY(.99) translateY(1px);background:linear-gradient(180deg,#f5e6c0,#f0ddb0)!important;box-shadow:inset 0 2px 4px #0000000f,0 0 20px #c9a55559,0 0 40px #c9a55526}.piano-key--active.piano-key--song.piano-key--black{transform:translate(-50%) scaleY(.98) translateY(2px);background:linear-gradient(180deg,#5c4a20,#3a3015)!important;box-shadow:0 2px 4px #00000080,0 0 16px #c9a5554d}@keyframes pulseGold{0%,to{box-shadow:0 0 8px #c9a5554d,inset 0 0 4px #c9a5551a}50%{box-shadow:0 0 16px #c9a55580,inset 0 0 8px #c9a55526}}.piano-key--upcoming.piano-key--white{background:linear-gradient(180deg,#f8efd5,#faf3e0)!important;animation:pulseGold 1.2s ease-in-out infinite;border-color:var(--gold-dim)}.piano-key--upcoming.piano-key--black{background:linear-gradient(180deg,#4a3d20,#2e2510)!important;animation:pulseGold 1.2s ease-in-out infinite}.piano-key__label{position:absolute;bottom:10px;left:50%;transform:translate(-50%);font-family:Figtree,sans-serif;font-size:10px;font-weight:600;pointer-events:none;white-space:nowrap;letter-spacing:.02em}.piano-key--white .piano-key__label{color:#9e9282}.piano-key--black .piano-key__label{color:#c9a55599;bottom:8px;font-size:8px}.piano-container{position:relative;margin:0;background:linear-gradient(180deg,#14110e,#0d0b09);padding:0 3px 3px;overflow-x:auto;border-radius:0;box-shadow:inset 0 1px #c9a5551a;flex-shrink:0}.piano-white-keys{display:flex;width:100%}.piano-black-keys{position:absolute;top:0;left:3px;right:3px;height:145px;pointer-events:none}.piano-black-keys .piano-key--black{pointer-events:auto}.falling-notes{position:relative;flex:1;width:100%;min-height:0;overflow:hidden;background:linear-gradient(180deg,#0c0e14fa,#0c0e14eb);border-top:1px solid rgba(201,165,85,.06)}.falling-notes__canvas{width:100%;height:100%;display:block}.midi-status{display:flex;align-items:center;gap:8px;padding:5px 12px 5px 10px;background:var(--bg-surface);border:1px solid var(--text-muted);border-radius:20px;font-size:12px;font-weight:500;color:var(--text-secondary);letter-spacing:.02em;transition:border-color .3s ease}.midi-status--connected{border-color:#5a9e6f40}.midi-status--error{border-color:#b8404033}.midi-status__dot{width:8px;height:8px;border-radius:50%;background-color:var(--ivory-dim);flex-shrink:0;transition:all .3s ease}.midi-status--connected .midi-status__dot{background-color:var(--sage);box-shadow:0 0 8px var(--sage)}.midi-status--error .midi-status__dot{background-color:var(--rose)}.midi-status__text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:180px}.theme-picker{position:relative}.theme-picker__trigger{display:flex;align-items:center;padding:5px 8px;background:transparent;border:1px solid var(--text-muted);border-radius:20px;cursor:pointer;transition:all .2s ease}.theme-picker__trigger:hover{border-color:var(--ivory-dim)}.theme-picker__swatch{display:flex;gap:3px}.theme-picker__swatch-dot{width:10px;height:10px;border-radius:50%;border:1px solid rgba(128,128,128,.3)}.theme-picker__dropdown{position:absolute;top:calc(100% + 8px);right:0;min-width:180px;background:var(--bg-surface);border:1px solid rgba(128,128,128,.15);border-radius:10px;padding:4px;box-shadow:0 8px 32px #00000059,0 2px 8px #0003;z-index:60;animation:themeDropIn .2s cubic-bezier(.16,1,.3,1) both}@keyframes themeDropIn{0%{opacity:0;transform:translateY(-6px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.theme-picker__option{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;background:transparent;border:none;border-radius:7px;cursor:pointer;transition:background .15s ease;font-family:inherit;text-align:left}.theme-picker__option:hover{background:var(--bg-hover)}.theme-picker__option--active{background:var(--gold-glow)}.theme-picker__option-colors{display:flex;gap:2px}.theme-picker__dot{width:12px;height:12px;border-radius:50%;border:1px solid rgba(128,128,128,.25)}.theme-picker__option-label{flex:1;font-size:12px;font-weight:500;color:var(--text-primary)}.theme-picker__option--active .theme-picker__option-label{color:var(--gold-bright);font-weight:600}.theme-picker__check{color:var(--gold-bright);flex-shrink:0}.user-menu{position:relative;flex-shrink:0}.user-menu__trigger{width:32px;height:32px;border-radius:50%;border:2px solid var(--gold-dim);background:var(--bg-elevated);cursor:pointer;padding:0;overflow:hidden;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.user-menu__trigger:hover{border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-glow)}.user-menu__avatar{width:100%;height:100%;object-fit:cover}.user-menu__initials{font-size:12px;font-weight:700;color:var(--gold-bright);letter-spacing:.02em;line-height:1}.user-menu__dropdown{position:absolute;top:calc(100% + 8px);right:0;min-width:220px;background:var(--bg-elevated);border:1px solid rgba(201,165,85,.15);border-radius:14px;box-shadow:0 4px 24px #00000080,0 0 0 1px #c9a5550f;overflow:hidden;animation:userMenuIn .18s cubic-bezier(.16,1,.3,1) both;z-index:200}@keyframes userMenuIn{0%{opacity:0;transform:translateY(-6px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.user-menu__profile{display:flex;align-items:center;gap:10px;padding:14px 16px}.user-menu__profile-avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;flex-shrink:0;border:1px solid var(--gold-dim)}.user-menu__profile-initials{width:36px;height:36px;border-radius:50%;background:var(--bg-hover);border:1px solid var(--gold-dim);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--gold-bright);flex-shrink:0}.user-menu__profile-info{display:flex;flex-direction:column;gap:2px;overflow:hidden}.user-menu__name{font-size:13px;font-weight:600;color:var(--text-bright);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-menu__email{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-menu__divider{height:1px;background:#c9a55514;margin:0 8px}.user-menu__item{display:flex;align-items:center;gap:8px;width:100%;padding:10px 16px;background:transparent;border:none;color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:all .12s ease;text-align:left}.user-menu__item:hover{background:var(--bg-hover);color:var(--text-bright)}.user-menu__item:last-child{border-radius:0 0 14px 14px}.user-menu__item--danger:hover{background:#b8404026;color:#d45c5c}.header{display:flex;justify-content:space-between;align-items:center;padding:14px 0;flex-wrap:wrap;gap:14px}.header__brand{display:flex;align-items:center;gap:12px}.header__home-btn{display:flex;align-items:center;gap:10px;background:transparent;border:none;padding:4px 6px;border-radius:8px;cursor:pointer;transition:background .15s ease}.header__home-btn:hover{background:var(--bg-elevated)}.header__home-btn:hover .header__title{color:var(--gold-bright)}.header__logo{border-radius:8px;flex-shrink:0}.header__title{font-size:28px;font-weight:600;color:var(--gold);letter-spacing:.01em;line-height:1;transition:color .15s ease}.header__level-badge{display:flex;align-items:center;gap:5px;padding:4px 10px;background:var(--gold-glow);border-radius:8px;color:var(--gold-bright);font-size:11px;font-weight:600;letter-spacing:.02em;white-space:nowrap}.header__level-emoji{font-size:13px;line-height:1}@media (max-width: 700px){.header__level-badge .header__level-label{display:none}.header__level-badge{padding:4px 8px}}.header__controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.header__divider{width:1px;height:20px;background:var(--text-muted);margin:0 4px}.header__toggle{display:flex;align-items:center;gap:8px;padding:5px 10px 5px 6px;background:transparent;border:1px solid var(--text-muted);border-radius:20px;cursor:pointer;transition:all .2s ease;color:var(--text-secondary);font-size:12px;font-weight:500;letter-spacing:.03em}.header__toggle:hover{border-color:var(--ivory-dim);color:var(--ivory-soft)}.header__toggle--on{border-color:var(--gold-dim);background:var(--gold-glow);color:var(--gold-bright)}.header__toggle--on:hover{border-color:var(--gold)}.header__toggle-track{position:relative;width:28px;height:16px;background:var(--bg-elevated);border-radius:8px;transition:background .2s ease;flex-shrink:0}.header__toggle--on .header__toggle-track{background:var(--gold-dim)}.header__toggle-thumb{position:absolute;top:2px;left:2px;width:12px;height:12px;background:var(--ivory-dim);border-radius:50%;transition:all .2s cubic-bezier(.16,1,.3,1)}.header__toggle--on .header__toggle-thumb{left:14px;background:var(--gold-bright)}.header__toggle-label{text-transform:uppercase;letter-spacing:.06em}.header__help-btn{width:30px;height:30px;border-radius:50%;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease;flex-shrink:0}.header__help-btn:hover{border-color:var(--gold-dim);color:var(--gold-bright);background:var(--gold-glow)}.sidebar__backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#06070a99;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:49;opacity:0;pointer-events:none;transition:opacity .3s ease}.sidebar--open .sidebar__backdrop{opacity:1;pointer-events:auto}.sidebar__panel{position:fixed;top:0;left:0;height:100%;width:280px;background:var(--bg-deep);border-right:1px solid rgba(201,165,85,.12);z-index:50;display:flex;flex-direction:column;transform:translate(-100%);transition:transform .3s cubic-bezier(.16,1,.3,1);box-shadow:4px 0 32px #00000080}.sidebar--open .sidebar__panel{transform:translate(0)}.sidebar__header{display:flex;align-items:center;justify-content:space-between;padding:20px 16px 12px;border-bottom:1px solid rgba(201,165,85,.08)}.sidebar__title{font-size:24px;font-weight:600;color:var(--gold);margin:0}.sidebar__close{width:32px;height:32px;border-radius:8px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease}.sidebar__close:hover{border-color:var(--ivory-dim);color:var(--ivory-soft);background:var(--bg-hover)}.sidebar__tabs{display:flex;gap:6px;padding:12px 16px}.sidebar__tab{flex:1;padding:6px 0;background:transparent;border:1px solid var(--text-muted);border-radius:8px;color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.03em;cursor:pointer;transition:all .15s ease;font-family:inherit}.sidebar__tab:hover{border-color:var(--ivory-dim);color:var(--ivory-soft)}.sidebar__tab--active{background:var(--gold-glow);border-color:var(--gold-dim);color:var(--gold-bright)}.sidebar__scroll{flex:1;overflow-y:auto;padding:8px 0 120px}.sidebar__group{border-bottom:1px solid rgba(255,255,255,.03)}.sidebar__group-header{width:100%;display:flex;align-items:center;gap:8px;padding:12px 16px;background:transparent;border:none;color:var(--group-accent, var(--ivory-soft));cursor:pointer;transition:background .15s ease;font-family:inherit;text-align:left}.sidebar__group-header:hover{background:var(--bg-hover)}.sidebar__chevron{transition:transform .2s ease;transform:rotate(-90deg);flex-shrink:0;opacity:.6}.sidebar__group--open .sidebar__chevron{transform:rotate(0)}.sidebar__group-name{font-size:14px;font-weight:600;flex:1}.sidebar__group-count{font-size:11px;color:var(--text-muted);font-weight:500}.sidebar__group-body{overflow:hidden;max-height:0;transition:max-height .25s cubic-bezier(.16,1,.3,1)}.sidebar__group--open .sidebar__group-body{max-height:600px}.sidebar__song{width:100%;display:flex;align-items:baseline;justify-content:space-between;gap:8px;padding:9px 16px 9px 38px;background:transparent;border:none;border-left:3px solid transparent;text-align:left;cursor:pointer;transition:background .15s ease,border-left-color .15s ease;font-family:inherit}.sidebar__song:hover{background:var(--bg-hover)}.sidebar__song--active{border-left-color:var(--gold);background:var(--gold-glow)}.sidebar__song-title{font-size:13px;font-weight:500;color:var(--ivory-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.sidebar__song--active .sidebar__song-title{color:var(--ivory)}.sidebar__song-meta{font-size:10px;color:var(--text-muted);white-space:nowrap;flex-shrink:0}@media (max-width: 768px){.sidebar__panel{width:min(280px,85vw)}}.np{position:relative;display:flex;align-items:center;gap:12px;flex-shrink:0;padding:0 16px;height:56px;background:var(--bg-surface);border-bottom:1px solid rgba(201,165,85,.1);box-shadow:0 4px 20px #0000004d;overflow:hidden}.np__library-btn{display:flex;align-items:center;gap:6px;padding:6px 10px;background:transparent;border:1px solid var(--text-muted);border-radius:8px;color:var(--text-secondary);font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;cursor:pointer;flex-shrink:0;transition:all .15s ease;font-family:inherit}.np__library-btn:hover{border-color:var(--gold-dim);color:var(--gold-bright);background:var(--gold-glow)}.np__divider{width:1px;height:28px;background:var(--text-muted);flex-shrink:0;opacity:.5}.np__chord-info{display:flex;align-items:center;gap:8px;flex-shrink:0}.np__chord-name{font-size:18px;font-weight:600;color:var(--gold-bright);white-space:nowrap}.np__info{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}.np__title{font-size:16px;font-weight:600;color:var(--ivory);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.2}.np__meta{font-size:11px;color:var(--text-secondary)}.np__empty{flex:1;font-size:13px;color:var(--text-muted);letter-spacing:.02em}.np__controls{display:flex;align-items:center;gap:6px;flex-shrink:0}.np__btn{width:32px;height:32px;border-radius:50%;border:1px solid var(--text-muted);background:transparent;color:var(--ivory-dim);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease}.np__btn:hover{border-color:var(--ivory-dim);color:var(--ivory-soft);transform:scale(1.08)}.np__btn--play{width:38px;height:38px;background:var(--gold);border-color:var(--gold);color:var(--bg-void)}.np__btn--play:hover{background:var(--gold-bright);border-color:var(--gold-bright);box-shadow:0 0 16px #c9a5554d}.np__speed{display:flex;align-items:center;gap:3px;flex-shrink:0}.np__speed-btn{padding:3px 7px;background:transparent;border:1px solid var(--text-muted);border-radius:10px;color:var(--text-secondary);font-size:10px;font-weight:500;cursor:pointer;transition:all .15s ease;font-family:inherit}.np__speed-btn:hover{border-color:var(--ivory-dim);color:var(--ivory-soft)}.np__speed-btn--active{background:var(--gold-glow);border-color:var(--gold-dim);color:var(--gold-bright)}.np__metro-btn{width:32px;height:32px;border-radius:8px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:all .15s ease}.np__metro-btn:hover{border-color:var(--gold-dim);color:var(--gold-bright);background:var(--gold-glow)}.np__metro-btn--active{border-color:var(--gold);color:var(--gold-bright);background:var(--gold-glow);box-shadow:0 0 8px #c9a55533}.np__synth-btn{width:32px;height:32px;border-radius:8px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:all .15s ease}.np__synth-btn:hover{border-color:var(--gold-dim);color:var(--gold-bright);background:var(--gold-glow)}.np__progress{position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--bg-elevated)}.np__progress-fill{height:100%;background:linear-gradient(90deg,var(--gold-dim),var(--gold));transition:width .1s linear}@media (max-width: 600px){.np__speed{display:none}}.chord-sidebar__hint{padding:10px 16px;font-size:12px;color:var(--text-muted);border-bottom:1px solid rgba(255,255,255,.03);letter-spacing:.02em}.chord-sidebar__symbol{font-size:14px;font-weight:700;color:var(--ivory);min-width:55px}.sidebar__song--active .chord-sidebar__symbol{color:var(--gold-bright)}.chord-sidebar__notes{font-size:11px;color:var(--text-muted);white-space:nowrap;font-variant-numeric:tabular-nums}.chord-sidebar__type{border-top:1px solid rgba(255,255,255,.02)}.chord-sidebar__type-header{width:100%;display:flex;align-items:center;gap:6px;padding:8px 16px 8px 28px;background:transparent;border:none;cursor:pointer;transition:background .15s ease;font-family:inherit;text-align:left}.chord-sidebar__type-header:hover{background:var(--bg-hover)}.chord-sidebar__type-dot{width:6px;height:6px;border-radius:50%;background:var(--type-accent, var(--gold-dim));flex-shrink:0}.chord-sidebar__type-name{font-size:12px;font-weight:600;color:var(--type-accent, var(--ivory-soft));flex:1}.chord-sidebar__type-count{font-size:10px;color:var(--text-muted)}.chord-sidebar__type-chevron{color:var(--text-muted);transition:transform .2s ease;transform:rotate(-90deg);flex-shrink:0}.chord-sidebar__type--open .chord-sidebar__type-chevron{transform:rotate(0)}.chord-sidebar__type-body{overflow:hidden;max-height:0;transition:max-height .25s cubic-bezier(.16,1,.3,1)}.chord-sidebar__type--open .chord-sidebar__type-body{max-height:800px}.chord-sheet{flex-shrink:0;overflow-y:auto;max-height:50vh;animation:sheetSlideIn .35s cubic-bezier(.16,1,.3,1) both}@keyframes sheetSlideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.chord-sheet__paper{display:flex;align-items:stretch;gap:0;margin:6px 12px;padding:14px 20px;border-radius:6px;background:repeating-linear-gradient(180deg,transparent,transparent 19px,rgba(160,140,110,.06) 19px,rgba(160,140,110,.06) 20px),linear-gradient(170deg,#f8f2e6,#f5eedd 30%,#f0e8d2 70%,#ede3ca);box-shadow:0 1px 3px #0000001f,0 4px 12px #00000014,inset 0 0 0 1px #b4a58c4d;border-left:3px solid rgba(180,165,140,.4);position:relative;overflow:hidden;flex-wrap:wrap}.chord-sheet__paper:before{content:"";position:absolute;top:0;right:0;width:20px;height:100%;background:linear-gradient(90deg,transparent,rgba(0,0,0,.02));pointer-events:none}.chord-sheet__info{display:flex;flex-direction:column;gap:4px;min-width:120px;max-width:160px;padding-right:16px;border-right:1px solid rgba(160,140,110,.2)}.chord-sheet__chord-name{font-size:20px;font-weight:600;color:#3a3225;margin:0;line-height:1.2}.chord-sheet__chord-symbol{font-size:14px;font-weight:700;color:var(--chord-accent, #8a7338);letter-spacing:.03em}.chord-sheet__desc{font-size:11px;color:#7a6e5c;line-height:1.45;margin:4px 0 0}.chord-sheet__staff-wrap{flex:1;min-width:180px;display:flex;align-items:center;padding:0 12px}.chord-sheet__staff{width:100%;height:100%;max-height:110px}.chord-sheet__clef{font-family:Noto Music,Segoe UI Symbol,serif}.chord-sheet__keys{display:flex;gap:8px;align-items:flex-start;padding-left:16px;border-left:1px solid rgba(160,140,110,.2)}.chord-sheet__key-col{display:flex;flex-direction:column;align-items:center;gap:4px}.chord-sheet__key{width:34px;height:40px;border-radius:0 0 4px 4px;display:flex;align-items:flex-end;justify-content:center;padding-bottom:4px;background:linear-gradient(180deg,#f5ead6,#faf5ec 15%,#faf5ec 80%,#efe5d2);border:1px solid #c8bda8;box-shadow:0 2px 4px #0000001a,inset 0 -2px 3px #00000008}.chord-sheet__key--black{width:28px;height:30px;background:linear-gradient(180deg,#2e2a26,#171411,#0e0c0a);border-color:#0a0908;box-shadow:0 2px 6px #0000004d,inset 0 1px #ffffff0d}.chord-sheet__key-name{font-size:10px;font-weight:700;color:#7a7062}.chord-sheet__key--black .chord-sheet__key-name{color:#c9a555b3;font-size:9px}.chord-sheet__interval{font-size:7px;font-weight:600;color:var(--chord-accent, #8a7338);letter-spacing:.03em;text-transform:uppercase;white-space:nowrap}.chord-sheet__finger{width:16px;height:16px;border-radius:50%;background:var(--chord-accent, #8a7338);color:#fff;font-size:9px;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 2px #0003}.chord-sheet__guide-toggle{width:100%;display:flex;align-items:center;justify-content:center;gap:6px;margin-top:10px;padding:6px 0;background:#a08c6e14;border:none;border-top:1px solid rgba(160,140,110,.15);border-radius:0 0 4px 4px;font-size:11px;font-weight:600;color:#7a6e5c;cursor:pointer;font-family:inherit;transition:all .15s ease}.chord-sheet__guide-toggle:hover{background:#a08c6e24;color:#5a5040}.chord-guide{margin:0 12px 6px;padding:16px 20px;border-radius:0 0 8px 8px;background:var(--bg-surface);border:1px solid rgba(201,165,85,.08);border-top:none;display:flex;flex-direction:column;gap:16px;animation:guideSlideIn .3s cubic-bezier(.16,1,.3,1) both}@keyframes guideSlideIn{0%{opacity:0;max-height:0}to{opacity:1;max-height:800px}}.chord-guide__section{padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.04)}.chord-guide__section:last-child{border-bottom:none;padding-bottom:0}.chord-guide__heading{font-size:13px;font-weight:600;color:var(--ivory);margin:0 0 10px;display:flex;align-items:center;gap:8px}.chord-guide__badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:10px;background:var(--gold-glow);border:1px solid var(--gold-dim);color:var(--gold-bright);font-size:10px;font-weight:700;letter-spacing:.04em}.mini-piano{position:relative;height:72px;margin-bottom:10px;border-radius:0 0 6px 6px;overflow:hidden;background:#14110e;padding:0 2px 2px}.mini-piano__whites{display:flex;height:100%}.mini-piano__whites>div{flex:1;background:linear-gradient(180deg,#f0e8d5,#faf5ec 15%,#faf5ec 85%,#e8dfcc);border-right:1px solid #c0b498;border-radius:0 0 3px 3px;position:relative;transition:background .15s ease}.mini-piano__white--active{background:linear-gradient(180deg,#f0e0b8,#f5eacc)!important;box-shadow:inset 0 0 8px #c9a55533,0 0 8px var(--key-accent, var(--gold))}.mini-piano__blacks{position:absolute;top:0;left:2px;right:2px;height:38px;pointer-events:none}.mini-piano__black{position:absolute;width:calc(100% / 14 * .55);height:100%;background:linear-gradient(180deg,#2a2620,#141210 60%,#0a0908);border-radius:0 0 3px 3px;transform:translate(-50%);box-shadow:0 2px 4px #0006;transition:background .15s ease}.mini-piano__black--active{background:linear-gradient(180deg,#3a3228,#1a1610)!important;box-shadow:0 2px 4px #0006,0 0 8px var(--key-accent, var(--gold))}.mini-piano__finger{position:absolute;bottom:4px;left:50%;transform:translate(-50%);width:16px;height:16px;border-radius:50%;color:#fff;font-size:9px;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 3px #0000004d;pointer-events:none}.mini-piano__finger--dark{bottom:2px;width:14px;height:14px;font-size:8px}.mini-piano__label{position:absolute;bottom:22px;left:50%;transform:translate(-50%);font-size:7px;font-weight:600;color:#786e5f59;pointer-events:none;white-space:nowrap;letter-spacing:-.02em}.mini-piano__label--active{color:#5a4a28;font-weight:800;font-size:8px}.mini-piano__label-black{position:absolute;top:3px;left:50%;transform:translate(-50%);font-size:6px;font-weight:600;color:#b4a07840;pointer-events:none;white-space:nowrap}.mini-piano__label-black--active{color:#e8c46ad9;font-weight:800;font-size:7px}.chord-guide__hand-text{font-size:12px;color:var(--text-secondary);margin:0;line-height:1.5}.chord-guide__steps{list-style:none;counter-reset:step;display:flex;flex-direction:column;gap:8px;padding:0}.chord-guide__step{counter-increment:step;display:flex;gap:10px;font-size:12px;color:var(--text-secondary);line-height:1.5;padding:8px 12px;background:var(--bg-elevated);border-radius:8px;border-left:3px solid var(--chord-accent, var(--gold-dim))}.chord-guide__step:before{content:counter(step);display:flex;align-items:center;justify-content:center;min-width:22px;height:22px;border-radius:50%;background:var(--chord-accent, var(--gold-dim));color:var(--bg-void);font-size:10px;font-weight:800;flex-shrink:0}.chord-guide__tips{display:flex;flex-direction:column;gap:8px}.chord-guide__tip{display:flex;gap:10px;align-items:flex-start;font-size:12px;color:var(--text-secondary);line-height:1.5;padding:8px 12px;background:var(--bg-elevated);border-radius:8px}.chord-guide__tip-icon{font-size:16px;flex-shrink:0;line-height:1;margin-top:1px}.chord-guide__tip-text{flex:1}@media (max-width: 768px){.chord-sheet__paper{gap:10px;padding:10px 14px;margin:4px 8px}.chord-sheet__info{flex-direction:row;align-items:baseline;gap:8px;min-width:100%;max-width:100%;border-right:none;border-bottom:1px solid rgba(160,140,110,.2);padding-right:0;padding-bottom:8px}.chord-sheet__desc{display:none}.chord-sheet__staff-wrap{min-width:140px}.chord-sheet__keys{border-left:none;padding-left:0}.chord-guide{margin:0 8px 4px;padding:12px 14px}}.inst-grid{display:flex;flex-direction:column;align-items:center;gap:4px}.inst-grid__label{font-size:7px;font-weight:700;letter-spacing:.12em;color:var(--gold-dim);text-transform:uppercase;line-height:1}.inst-grid__cards{display:grid;grid-template-columns:repeat(3,1fr);gap:3px}.inst-tile{display:flex;flex-direction:column;align-items:center;gap:2px;padding:4px 3px 3px;background:#0000004d;border:1px solid rgba(255,255,255,.05);border-radius:5px;cursor:pointer;transition:all .12s ease;width:48px;position:relative;overflow:hidden}.inst-tile:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--inst-color, var(--gold));opacity:0;transition:opacity .12s ease;pointer-events:none}.inst-tile:hover{border-color:var(--inst-color, var(--gold-dim));transform:translateY(-1px)}.inst-tile:hover:before{opacity:.06}.inst-tile--active{border-color:var(--inst-color, var(--gold));background:#00000080;box-shadow:0 0 0 1px var(--inst-color, var(--gold)),0 2px 8px #00000080,inset 0 0 8px #0000004d}.inst-tile--active:before{opacity:.1}.inst-tile__icon{width:32px;height:32px;flex-shrink:0}.inst-tile__icon svg{width:100%;height:100%}.inst-tile__name{font-size:6.5px;font-weight:600;color:var(--text-secondary);letter-spacing:.02em;text-align:center;line-height:1.1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:42px;transition:color .12s ease}.inst-tile--active .inst-tile__name{color:var(--inst-color, var(--gold-bright))}@media (max-width: 768px){.inst-tile{width:40px;padding:3px 2px}.inst-tile__icon{width:26px;height:26px}.inst-tile__name{font-size:6px;max-width:36px}.inst-grid__cards{gap:2px}}.synth-rack{position:relative;flex-shrink:0;display:flex;align-items:stretch;gap:0;padding:10px 20px;background:repeating-linear-gradient(90deg,transparent,transparent 1px,rgba(255,255,255,.008) 1px,rgba(255,255,255,.008) 2px),linear-gradient(180deg,#1a1816,#141210,#0f0e0c);border-top:1px solid rgba(201,165,85,.15);border-bottom:1px solid rgba(0,0,0,.6);box-shadow:inset 0 1px #ffffff0a,0 2px 8px #0006;overflow-x:auto;overflow-y:hidden}.synth-rack__screw{position:absolute;width:8px;height:8px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#5a5040,#2a2520);box-shadow:inset 0 1px 1px #0009,0 0 0 1px #0000004d,0 1px 2px #0000004d;z-index:5}.synth-rack__screw--tl{top:6px;left:8px}.synth-rack__screw--tr{top:6px;right:8px}.synth-rack__screw--bl{bottom:6px;left:8px}.synth-rack__screw--br{bottom:6px;right:8px}.synth-rack__module{display:flex;flex-direction:column;align-items:center;gap:6px;padding:2px 10px;position:relative}.synth-rack__module-label{font-size:8px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-dim);text-align:center;white-space:nowrap}.synth-rack__faders{display:flex;gap:6px;align-items:flex-end}.synth-rack__filter-row{display:flex;align-items:flex-end;gap:10px}.synth-rack__module--instrument{margin-left:auto;justify-content:center;padding:0 6px}.synth-rack__divider{width:1px;align-self:stretch;margin:4px;background:linear-gradient(180deg,transparent 0%,rgba(201,165,85,.15) 30%,rgba(201,165,85,.15) 70%,transparent 100%)}.fader{display:flex;flex-direction:column;align-items:center;gap:3px;width:28px;-webkit-user-select:none;user-select:none}.fader--disabled{opacity:.3;pointer-events:none}.fader__value{font-size:8px;color:var(--text-secondary);font-variant-numeric:tabular-nums;line-height:1;white-space:nowrap}.fader__track{position:relative;width:8px;height:72px;background:var(--bg-elevated);border-radius:4px;cursor:ns-resize;touch-action:none;border:1px solid rgba(0,0,0,.4);box-shadow:inset 0 1px 3px #00000080;flex-shrink:0}.fader__fill{position:absolute;bottom:0;left:0;right:0;border-radius:4px;background:var(--fader-color, var(--gold));opacity:.55;transition:height .05s ease;pointer-events:none}.fader__thumb{position:absolute;left:50%;transform:translate(-50%);width:18px;height:14px;border-radius:3px;background:linear-gradient(180deg,#4a4238,#2a2520);border:1px solid var(--fader-color, var(--gold));box-shadow:0 1px 4px #00000080,inset 0 1px #ffffff14;pointer-events:none;transition:bottom .05s ease}.fader__thumb:after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:8px;height:1px;background:var(--fader-color, var(--gold));border-radius:1px;opacity:.8;box-shadow:0 -3px 0 var(--fader-color, var(--gold)),0 3px 0 var(--fader-color, var(--gold))}.fader__track:hover .fader__thumb{box-shadow:0 1px 6px #0009,0 0 8px var(--fader-color, var(--gold)),inset 0 1px #ffffff1a}.fader__label{font-size:7px;font-weight:700;letter-spacing:.1em;color:var(--text-muted);text-transform:uppercase;line-height:1}.hw-switch{display:flex;flex-direction:column;align-items:center;gap:3px}.hw-switch__label{font-size:8px;font-weight:700;letter-spacing:.12em;color:var(--gold-dim);text-transform:uppercase}.hw-switch__body{display:flex;flex-direction:column;gap:2px;background:#0000004d;border-radius:4px;padding:3px;border:1px solid rgba(0,0,0,.4);box-shadow:inset 0 1px 3px #00000080}.hw-switch__pos{display:flex;align-items:center;gap:5px;padding:2px 6px;background:transparent;border:none;border-radius:3px;cursor:pointer;transition:background .1s ease;font-family:inherit}.hw-switch__pos:hover{background:#ffffff0a}.hw-switch__pos--active{background:#c9a55514}.hw-switch__led{width:5px;height:5px;border-radius:50%;background:#1a1816;border:1px solid rgba(0,0,0,.4);flex-shrink:0;transition:all .15s ease}.hw-switch__pos--active .hw-switch__led{background:var(--gold-bright);box-shadow:0 0 6px var(--gold),0 0 2px var(--gold-bright);border-color:var(--gold-dim)}.hw-switch__text{font-size:8px;font-weight:600;letter-spacing:.06em;color:var(--text-muted);transition:color .1s ease;white-space:nowrap}.hw-switch__pos--active .hw-switch__text{color:var(--gold-bright)}@media (max-width: 768px){.synth-rack{padding:8px 12px}.fader__track{height:60px}.fader{width:24px}}.mp__backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#06070a99;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:49;opacity:0;pointer-events:none;transition:opacity .3s ease}.mp--open .mp__backdrop{opacity:1;pointer-events:auto}.mp__panel{position:fixed;top:0;right:0;height:100%;width:260px;background:var(--bg-deep);border-left:1px solid rgba(201,165,85,.12);z-index:50;display:flex;flex-direction:column;transform:translate(100%);transition:transform .3s cubic-bezier(.16,1,.3,1);box-shadow:-4px 0 32px #00000080}.mp--open .mp__panel{transform:translate(0)}.mp__header{display:flex;align-items:center;justify-content:space-between;padding:20px 16px 12px;border-bottom:1px solid rgba(201,165,85,.08)}.mp__title{font-size:24px;font-weight:600;color:var(--gold);margin:0}.mp__close{width:32px;height:32px;border-radius:8px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease}.mp__close:hover{border-color:var(--ivory-dim);color:var(--ivory-soft);background:var(--bg-hover)}.mp__scroll{flex:1;overflow-y:auto;padding:8px 0 120px}.mp__section{padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.03)}.mp__section--row{display:flex;align-items:center;justify-content:space-between}.mp__label{font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:8px}.mp__label--inline{margin-bottom:0;font-size:12px;color:var(--text-secondary)}.mp__power{width:100%;padding:10px;border-radius:10px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);font-size:14px;font-weight:700;letter-spacing:.1em;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:8px;font-family:inherit}.mp__power:hover{border-color:var(--ivory-dim)}.mp__power--on{background:var(--gold-glow);border-color:var(--gold);color:var(--gold-bright)}.mp__power--on:hover{background:#c9a55533}.mp__power-dot{width:10px;height:10px;border-radius:50%;background:var(--text-muted);transition:all .2s ease}.mp__power--on .mp__power-dot{background:var(--gold-bright);box-shadow:0 0 8px var(--gold)}.mp__bpm-row{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:10px}.mp__bpm-value{font-size:40px;font-weight:600;color:var(--ivory);min-width:80px;text-align:center;line-height:1}.mp__bpm-value--dim{color:var(--text-muted)}.mp__bpm-btn{width:32px;height:32px;border-radius:50%;border:1px solid var(--text-muted);background:transparent;color:var(--ivory-dim);font-size:18px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease;font-family:inherit}.mp__bpm-btn:hover:not(:disabled){border-color:var(--ivory-dim);color:var(--ivory-soft)}.mp__bpm-btn:disabled{opacity:.3;cursor:not-allowed}.mp__tap{width:100%;padding:8px;border-radius:8px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.04em;cursor:pointer;transition:all .15s ease;font-family:inherit}.mp__tap:hover:not(:disabled){border-color:var(--gold-dim);color:var(--gold-bright);background:var(--gold-glow)}.mp__tap:disabled{opacity:.3;cursor:not-allowed}.mp__beats{display:flex;gap:8px;justify-content:center}.mp__beat-dot{width:14px;height:14px;border-radius:50%;background:var(--bg-elevated);border:1px solid var(--text-muted);transition:all .1s ease}.mp__beat-dot--active{background:var(--gold);border-color:var(--gold);box-shadow:0 0 10px #c9a55580;transform:scale(1.2)}.mp__beat-dot--accent.mp__beat-dot--active{background:var(--gold-bright);box-shadow:0 0 14px #c9a555b3;transform:scale(1.3)}.mp__pills{display:flex;gap:5px;flex-wrap:wrap}.mp__pill{padding:5px 10px;background:transparent;border:1px solid var(--text-muted);border-radius:10px;color:var(--text-secondary);font-size:11px;font-weight:500;cursor:pointer;transition:all .15s ease;font-family:inherit}.mp__pill:hover:not(:disabled){border-color:var(--ivory-dim);color:var(--ivory-soft)}.mp__pill--active{background:var(--gold-glow);border-color:var(--gold-dim);color:var(--gold-bright)}.mp__pill:disabled{opacity:.3;cursor:not-allowed}.mp__toggle{background:none;border:none;cursor:pointer;padding:0;flex-shrink:0}.mp__toggle-track{position:relative;display:block;width:36px;height:20px;background:var(--bg-elevated);border-radius:10px;transition:background .2s ease;border:1px solid var(--text-muted)}.mp__toggle--on .mp__toggle-track{background:var(--gold-dim);border-color:var(--gold-dim)}.mp__toggle-thumb{position:absolute;top:2px;left:2px;width:14px;height:14px;background:var(--ivory-dim);border-radius:50%;transition:all .2s cubic-bezier(.16,1,.3,1)}.mp__toggle--on .mp__toggle-thumb{left:18px;background:var(--gold-bright)}.mp__slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;border-radius:2px;background:var(--bg-elevated);outline:none;cursor:pointer}.mp__slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--gold);border:none;cursor:pointer;transition:box-shadow .15s ease}.mp__slider::-webkit-slider-thumb:hover{box-shadow:0 0 10px #c9a55580}.mp__slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--gold);border:none;cursor:pointer}@media (max-width: 768px){.mp__panel{width:min(260px,85vw)}}.intro{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:var(--bg-void);animation:fadeIn .6s ease both;overflow:hidden}.intro--exiting{animation:introExit .5s ease both;pointer-events:none}@keyframes introExit{to{opacity:0;transform:scale(1.05)}}.intro__canvas{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0}.intro__pages{position:relative;z-index:1;height:100%;overflow-y:scroll;scroll-snap-type:y mandatory;scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.intro__pages::-webkit-scrollbar{display:none}.intro__page{height:100vh;min-height:100vh;scroll-snap-align:start;scroll-snap-stop:always;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}.intro__page--1{background:radial-gradient(ellipse 60% 50% at 50% 40%,rgba(201,165,85,.06) 0%,transparent 70%),var(--bg-void)}.intro__piano-bg{position:absolute;bottom:0;left:0;right:0;height:160px;display:flex;opacity:.06;pointer-events:none;overflow:hidden}.intro__bg-key-group{position:relative;flex:1}.intro__bg-white-key{width:100%;height:100%;background:linear-gradient(180deg,#d0c4a8,#f0e8d5 20%);border-right:1px solid rgba(0,0,0,.2);border-radius:0 0 3px 3px}.intro__bg-black-key{position:absolute;top:0;right:-25%;width:50%;height:60%;background:#1a1816;z-index:1;border-radius:0 0 2px 2px}.intro__content{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:28px;padding:32px 24px 20px;max-width:780px;width:100%}.intro__header{text-align:center;animation:fadeSlideDown .7s cubic-bezier(.16,1,.3,1) .1s both}@keyframes fadeSlideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.intro__logo{margin-bottom:16px;filter:drop-shadow(0 0 16px rgba(201,165,85,.3));border-radius:16px}.intro__title{font-size:52px;font-weight:600;color:var(--gold);margin:0;letter-spacing:.01em;line-height:1;text-shadow:0 2px 20px rgba(201,165,85,.2)}.intro__subtitle{font-size:16px;color:var(--ivory-dim);margin:10px 0 0;letter-spacing:.08em;text-transform:uppercase;font-weight:500}.intro__cards{display:flex;gap:16px;width:100%}.intro__card{position:relative;flex:1;aspect-ratio:1 / 1;border:1px solid rgba(255,255,255,.06);border-radius:18px;cursor:pointer;overflow:hidden;font-family:inherit;color:inherit;text-align:center;padding:0;background:transparent;animation:cardSlideIn .6s cubic-bezier(.16,1,.3,1) both;transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s ease}@keyframes cardSlideIn{0%{opacity:0;transform:translateY(30px) scale(.94)}to{opacity:1;transform:translateY(0) scale(1)}}.intro__card:hover{transform:translateY(-6px) scale(1.02);box-shadow:0 16px 48px #0006,0 0 0 1px var(--card-accent)}.intro__card:active{transform:scale(.98)}.intro__card:disabled{opacity:.4;cursor:not-allowed}.intro__card--beginner{--card-accent: #50b878}.intro__card--practice{--card-accent: #e0a040}.intro__card--musician{--card-accent: #c07070}.intro__card-bg{position:absolute;top:0;right:0;bottom:0;left:0;z-index:0;filter:blur(1px);transition:filter .3s ease,transform .3s ease}.intro__card:hover .intro__card-bg{filter:blur(0px);transform:scale(1.05)}.intro__card-bg--beginner{background:radial-gradient(circle at 30% 70%,rgba(80,184,120,.25) 0%,transparent 60%),radial-gradient(circle at 70% 30%,rgba(80,184,120,.15) 0%,transparent 50%),linear-gradient(145deg,#0a1810,#0d1f14 40%,#081208)}.intro__card-bg--practice{background:radial-gradient(circle at 60% 80%,rgba(224,160,64,.2) 0%,transparent 55%),radial-gradient(circle at 30% 20%,rgba(224,160,64,.15) 0%,transparent 50%),linear-gradient(145deg,#1a1408,#201a0a 40%,#120e06)}.intro__card-bg--musician{background:radial-gradient(circle at 50% 60%,rgba(192,112,112,.2) 0%,transparent 55%),radial-gradient(circle at 20% 30%,rgba(192,112,112,.12) 0%,transparent 50%),linear-gradient(145deg,#180a0a,#201010 40%,#100808)}.intro__card-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;height:100%;padding:20px 16px}.intro__card-emoji{font-size:36px;line-height:1;margin-bottom:4px;filter:drop-shadow(0 2px 8px rgba(0,0,0,.3))}.intro__card-title{font-size:26px;font-weight:600;color:#fff;margin:0;line-height:1.1;text-shadow:0 2px 12px rgba(0,0,0,.5)}.intro__card-subtitle{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--card-accent);margin:0}.intro__card-desc{font-size:12px;color:#ffffff8c;margin:4px 0 0;line-height:1.4;max-width:180px}.intro__card-cta{display:inline-flex;align-items:center;gap:4px;margin-top:8px;padding:5px 14px;border-radius:20px;background:var(--card-accent);color:#fff;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;box-shadow:0 2px 8px #0000004d;opacity:0;transform:translateY(6px);transition:all .25s ease}.intro__card:hover .intro__card-cta{opacity:1;transform:translateY(0)}.intro__loading{font-size:13px;color:var(--gold-dim);letter-spacing:.03em;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.6}50%{opacity:1}}.intro__scroll-hint{display:flex;align-items:center;gap:6px;background:transparent;border:1px solid rgba(201,165,85,.2);border-radius:20px;padding:7px 16px;color:var(--gold-dim);font-size:12px;font-weight:500;letter-spacing:.05em;cursor:pointer;transition:all .2s ease;animation:bounce 2s ease-in-out infinite}.intro__scroll-hint:hover{border-color:var(--gold);color:var(--gold);background:var(--gold-glow)}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(4px)}}.intro__page--2{background:radial-gradient(ellipse 80% 60% at 20% 50%,rgba(120,144,192,.06) 0%,transparent 60%),radial-gradient(ellipse 60% 40% at 80% 40%,rgba(201,165,85,.04) 0%,transparent 50%),var(--bg-void);flex-direction:column;justify-content:flex-start;align-items:stretch;gap:0;padding:0}.intro__p2-header{text-align:center;padding:16px 20px 10px;flex-shrink:0}.intro__p2-title{font-size:32px;font-weight:600;color:var(--gold);margin:0 0 3px;line-height:1.1}.intro__p2-sub{font-size:11px;color:var(--ivory-dim);letter-spacing:.08em;text-transform:uppercase;margin:0;font-weight:500}.intro__ascii-wrap{position:relative;width:100%;flex:1;min-height:0;overflow:hidden;background:#00000080;border-top:1px solid rgba(201,165,85,.12);border-bottom:1px solid rgba(201,165,85,.12)}.intro__p2-features{display:flex;width:100%;overflow-x:auto;padding:12px 16px;gap:10px;flex-shrink:0;scrollbar-width:none;-webkit-overflow-scrolling:touch;background:#00000040;border-top:1px solid rgba(201,165,85,.08)}.intro__p2-features::-webkit-scrollbar{display:none}.intro__feat-chip{display:flex;align-items:center;gap:9px;padding:9px 16px 9px 11px;background:#ffffff0a;border:1px solid rgba(255,255,255,.07);border-left:2px solid var(--feat-color, var(--gold-dim));border-radius:24px;white-space:nowrap;flex-shrink:0;transition:background .15s ease,transform .15s ease;cursor:default}.intro__feat-chip:hover{background:#ffffff14;transform:translateY(-1px)}.intro__feat-chip-icon{font-size:18px;line-height:1}.intro__feat-chip-body{display:flex;flex-direction:column;gap:2px}.intro__feat-chip-title{font-size:12px;font-weight:600;color:var(--text-bright);letter-spacing:.02em}.intro__feat-chip-desc{font-size:10.5px;color:var(--text-secondary);line-height:1.3}.intro__ascii-notes{position:absolute;top:0;left:0;right:0;height:100%;display:flex;overflow:hidden;z-index:1}.intro__ascii-stream{flex:1;display:flex;flex-direction:column;align-items:center;animation:streamFlow linear infinite}@keyframes streamFlow{0%{transform:translateY(-55%)}to{transform:translateY(15%)}}.intro__ascii-note{font-family:monospace;font-size:10px;color:#c9a55566;line-height:1.7;-webkit-user-select:none;user-select:none;text-shadow:0 0 4px rgba(201,165,85,.2)}.intro__ascii-piano{position:absolute;bottom:0;left:0;right:0;height:80px;z-index:3}.intro__ascii-blacks{display:flex;height:46px;background:#0a0806eb;border-top:1px solid rgba(201,165,85,.3);box-shadow:0 -4px 20px #c9a55514}.intro__ascii-wslot{flex:1;position:relative;border-right:1px solid rgba(201,165,85,.06)}.intro__ascii-bkey{position:absolute;top:0;left:18%;width:64%;height:82%;background:linear-gradient(180deg,#3a3028,#1a1614);border:1px solid rgba(201,165,85,.2);border-top:none;border-radius:0 0 3px 3px;z-index:2}.intro__ascii-whites{display:flex;height:34px;background:linear-gradient(180deg,#f0e8d5eb,#dcd4c4eb);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.intro__ascii-wkey{flex:1;display:flex;align-items:flex-end;justify-content:center;padding-bottom:3px;border-right:1px solid rgba(0,0,0,.12);font-family:monospace;font-size:6px;color:#00000040;font-weight:700;-webkit-user-select:none;user-select:none}.intro__ascii-glow{position:absolute;bottom:80px;left:0;right:0;height:60px;background:linear-gradient(to top,rgba(201,165,85,.18),rgba(201,165,85,.04) 60%,transparent);pointer-events:none;z-index:2}.intro__page--3{background:radial-gradient(ellipse 60% 50% at 30% 60%,rgba(201,165,85,.05) 0%,transparent 60%),var(--bg-void);justify-content:center}.intro__p3-layout{display:flex;align-items:flex-start;gap:40px;max-width:860px;width:100%;padding:0 32px}.intro__support{flex:0 0 280px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px}.intro__support-coffee-icon{font-size:56px;line-height:1;filter:drop-shadow(0 4px 16px rgba(201,165,85,.4));animation:coffeeSteam 3s ease-in-out infinite}@keyframes coffeeSteam{0%,to{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-6px) rotate(2deg)}}.intro__support-title{font-size:28px;font-weight:600;color:var(--gold);margin:0;line-height:1.1}.intro__support-desc{font-size:13px;color:var(--ivory-dim);line-height:1.6;margin:0}.intro__coffee-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:linear-gradient(135deg,#f0e8d5,#e8c46a);color:#1a1410;font-size:14px;font-weight:700;letter-spacing:.03em;border-radius:28px;text-decoration:none;box-shadow:0 4px 16px #c9a5554d,0 1px #fff3 inset;transition:all .2s ease;border:none;cursor:pointer}.intro__coffee-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px #c9a55566}.intro__coffee-emoji{font-size:18px}.intro__p3-divider{width:1px;align-self:stretch;background:linear-gradient(180deg,transparent,rgba(201,165,85,.2) 20%,rgba(201,165,85,.2) 80%,transparent)}.intro__feedback{flex:1;display:flex;flex-direction:column;gap:12px;min-width:0}.intro__feedback-title{font-size:26px;font-weight:600;color:var(--gold);margin:0}.intro__feedback-sub{font-size:12px;color:var(--text-muted);letter-spacing:.05em;text-transform:uppercase;font-weight:500;margin:0}.intro__feedback-form{display:flex;flex-direction:column;gap:10px}.intro__fb-row{display:flex;gap:10px}.intro__fb-field{display:flex;flex-direction:column;gap:4px;flex:1}.intro__fb-label{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--gold-dim)}.intro__fb-input{background:#0006;border:1px solid rgba(201,165,85,.2);border-radius:6px;padding:9px 12px;color:var(--text-bright);font-family:inherit;font-size:13px;outline:none;transition:border-color .15s ease,box-shadow .15s ease;resize:none;width:100%;box-sizing:border-box}.intro__fb-input:focus{border-color:var(--gold-dim);box-shadow:0 0 0 2px #c9a5551f}.intro__fb-input::placeholder{color:var(--text-muted)}.intro__fb-textarea{min-height:90px;resize:vertical}.intro__fb-submit{align-self:flex-start;padding:10px 24px;background:var(--gold-glow);border:1px solid var(--gold-dim);border-radius:6px;color:var(--gold-bright);font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;cursor:pointer;transition:all .15s ease}.intro__fb-submit:hover:not(:disabled){background:#c9a55526;border-color:var(--gold);color:var(--gold)}.intro__fb-submit:disabled{opacity:.5;cursor:not-allowed}.intro__fb-error{font-size:12px;color:var(--rose);margin:0}.intro__feedback-success{display:flex;flex-direction:column;align-items:center;gap:12px;padding:32px;background:#5a9e6f14;border:1px solid rgba(90,158,111,.25);border-radius:10px;text-align:center}.intro__fb-check{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:#5a9e6f26;border:1px solid rgba(90,158,111,.4);color:#5a9e6f;font-size:18px;font-weight:700}.intro__feedback-success p{font-size:14px;color:var(--ivory-soft);margin:0}.intro__dots{position:fixed;right:20px;top:50%;transform:translateY(-50%);z-index:200;display:flex;flex-direction:column;gap:8px}.intro__dot{width:8px;height:8px;border-radius:50%;background:#c9a55540;border:1px solid rgba(201,165,85,.3);cursor:pointer;padding:0;transition:all .2s ease}.intro__dot:hover{background:#c9a55580}.intro__dot--active{background:var(--gold);border-color:var(--gold);transform:scale(1.3);box-shadow:0 0 8px #c9a55580}.intro__user-badge{position:absolute;top:18px;right:20px;display:flex;align-items:center;gap:8px;padding:6px 12px 6px 6px;background:#1a1e2ad9;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(201,165,85,.2);border-radius:24px;z-index:10;animation:fadeInDown .4s cubic-bezier(.16,1,.3,1) .2s both}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.intro__user-avatar{width:26px;height:26px;border-radius:50%;object-fit:cover;border:1px solid rgba(201,165,85,.4);flex-shrink:0}.intro__user-initials{width:26px;height:26px;border-radius:50%;background:#c9a55526;border:1px solid rgba(201,165,85,.4);display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#e8c46a;flex-shrink:0}.intro__user-name{font-size:12px;font-weight:500;color:#c8bda8e6;white-space:nowrap;max-width:140px;overflow:hidden;text-overflow:ellipsis}@media (max-width: 900px){.intro__p2-header{padding:18px 16px 10px}.intro__p2-title{font-size:28px}.intro__p3-layout{flex-direction:column;padding:0 20px;gap:24px;overflow-y:auto}.intro__p3-divider{width:100%;height:1px;align-self:auto;background:linear-gradient(90deg,transparent,rgba(201,165,85,.2) 20%,rgba(201,165,85,.2) 80%,transparent)}.intro__support{flex:none}.intro__fb-row{flex-direction:column}}@media (max-width: 700px){.intro__cards{flex-direction:column;gap:12px}.intro__card{aspect-ratio:auto;min-height:120px}.intro__card-inner{flex-direction:row;justify-content:flex-start;gap:14px;padding:16px 20px;text-align:left}.intro__card-emoji{font-size:28px;margin-bottom:0}.intro__card-title{font-size:20px}.intro__card-desc{max-width:none}.intro__card-cta{opacity:1;transform:none;margin-top:4px}.intro__title{font-size:36px}.intro__content{gap:20px;padding:20px 16px 16px}.intro__piano-bg{height:100px}.intro__dots{right:10px}}.auth-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:110;background:#06070ad9;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:20px;animation:authOverlayIn .2s ease both}@keyframes authOverlayIn{0%{opacity:0}to{opacity:1}}.auth-modal{position:relative;background:var(--bg-surface);border:1px solid rgba(201,165,85,.2);border-radius:20px;padding:40px 36px 32px;max-width:380px;width:100%;text-align:center;box-shadow:0 0 0 1px #c9a5550f,0 24px 64px #0009;animation:authModalIn .3s cubic-bezier(.16,1,.3,1) both}@keyframes authModalIn{0%{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.auth-modal__close{position:absolute;top:14px;right:14px;width:28px;height:28px;border-radius:8px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease}.auth-modal__close:hover{border-color:var(--ivory-dim);color:var(--ivory-soft);background:var(--bg-elevated)}.auth-modal__emoji{font-size:40px;display:block;margin-bottom:14px;line-height:1}.auth-modal__title{font-size:26px;font-weight:600;color:var(--gold);margin-bottom:10px;letter-spacing:.01em}.auth-modal__desc{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:28px}.auth-modal__google-btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:13px 20px;background:var(--bg-elevated);border:1px solid rgba(201,165,85,.25);border-radius:12px;color:var(--text-bright);font-size:14px;font-weight:600;cursor:pointer;transition:all .18s ease;letter-spacing:.01em;margin-bottom:14px}.auth-modal__google-btn:hover{background:var(--bg-hover);border-color:var(--gold-dim);color:var(--ivory);box-shadow:0 2px 12px #c9a5551f}.auth-modal__google-btn:active{transform:scale(.98)}.auth-modal__terms{font-size:11px;color:var(--text-muted);letter-spacing:.02em}.settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#06070abf;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px;animation:settingsOverlayIn .2s ease both}@keyframes settingsOverlayIn{0%{opacity:0}to{opacity:1}}.settings-panel{background:var(--bg-surface);border:1px solid rgba(201,165,85,.15);border-radius:20px;width:100%;max-width:440px;box-shadow:0 0 0 1px #c9a5550d,0 24px 64px #0000008c;animation:settingsPanelIn .3s cubic-bezier(.16,1,.3,1) both;overflow:hidden}@keyframes settingsPanelIn{0%{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.settings-panel__header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 16px;border-bottom:1px solid rgba(201,165,85,.08)}.settings-panel__title{font-size:22px;font-weight:600;color:var(--gold);letter-spacing:.01em}.settings-panel__close{width:30px;height:30px;border-radius:8px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease}.settings-panel__close:hover{border-color:var(--ivory-dim);color:var(--ivory-soft);background:var(--bg-elevated)}.settings-panel__body{padding:20px 24px 24px;display:flex;flex-direction:column;gap:24px}.settings-section__label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:12px}.settings-profile{display:flex;align-items:center;gap:14px;padding:16px;background:var(--bg-elevated);border-radius:12px;border:1px solid rgba(201,165,85,.08)}.settings-profile__avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;border:2px solid var(--gold-dim);flex-shrink:0}.settings-profile__initials{width:52px;height:52px;border-radius:50%;background:var(--bg-hover);border:2px solid var(--gold-dim);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:var(--gold-bright);flex-shrink:0}.settings-profile__info{display:flex;flex-direction:column;gap:3px;overflow:hidden}.settings-profile__name{font-size:16px;font-weight:600;color:var(--text-bright);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.settings-profile__email{font-size:13px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.settings-action-btn{display:flex;align-items:center;gap:8px;padding:11px 16px;background:var(--bg-elevated);border:1px solid var(--text-muted);border-radius:10px;color:var(--text-secondary);font-size:13px;font-weight:600;cursor:pointer;transition:all .15s ease;width:100%}.settings-action-btn:hover{background:var(--bg-hover);color:var(--text-bright);border-color:var(--ivory-dim)}.settings-action-btn--danger:hover{background:#b8404026;border-color:#b8404066;color:#d45c5c}.tutorial{position:fixed;top:0;right:0;bottom:0;left:0;z-index:90;pointer-events:none}.tutorial__backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#06070aa6;pointer-events:auto;animation:fadeIn .3s ease both}.tutorial-highlight{position:relative;z-index:91!important;box-shadow:0 0 0 4px var(--gold),0 0 20px #c9a5554d!important;border-radius:8px;transition:box-shadow .3s ease}.tutorial__tooltip{position:fixed;z-index:92;pointer-events:auto;background:var(--bg-surface);border:1px solid rgba(201,165,85,.2);border-radius:14px;padding:18px 20px 14px;box-shadow:0 8px 40px #00000073,0 2px 10px #00000040,0 0 0 1px #c9a55514;animation:tooltipIn .3s cubic-bezier(.16,1,.3,1) both}@keyframes tooltipIn{0%{opacity:0;transform:translateY(8px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.tutorial__arrow{position:absolute;width:12px;height:12px;background:var(--bg-surface);border:1px solid rgba(201,165,85,.2);transform:rotate(45deg);z-index:-1}.tutorial__tooltip--bottom .tutorial__arrow{border-right:none;border-bottom:none}.tutorial__tooltip--top .tutorial__arrow{border-left:none;border-top:none}.tutorial__tooltip--left .tutorial__arrow{border-left:none;border-bottom:none}.tutorial__tooltip--right .tutorial__arrow{border-right:none;border-top:none}.tutorial__header{display:flex;align-items:center;gap:10px;margin-bottom:8px}.tutorial__step-badge{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:22px;border-radius:11px;background:var(--gold-glow);border:1px solid var(--gold-dim);color:var(--gold-bright);font-size:10px;font-weight:700;letter-spacing:.04em;flex-shrink:0}.tutorial__title{font-size:15px;font-weight:600;color:var(--ivory);margin:0;line-height:1.3}.tutorial__desc{font-size:13px;color:var(--text-secondary);line-height:1.55;margin:0 0 14px}.tutorial__actions{display:flex;align-items:center;justify-content:space-between}.tutorial__skip{background:none;border:none;color:var(--text-muted);font-size:11px;font-weight:500;cursor:pointer;padding:4px 0;transition:color .15s ease;font-family:inherit;letter-spacing:.03em}.tutorial__skip:hover{color:var(--text-secondary)}.tutorial__nav{display:flex;gap:6px}.tutorial__btn{padding:6px 14px;border-radius:8px;font-size:12px;font-weight:600;cursor:pointer;transition:all .15s ease;font-family:inherit;letter-spacing:.02em}.tutorial__btn--prev{background:transparent;border:1px solid var(--text-muted);color:var(--text-secondary)}.tutorial__btn--prev:hover{border-color:var(--ivory-dim);color:var(--ivory-soft)}.tutorial__btn--next{background:var(--gold);border:1px solid var(--gold);color:var(--bg-void)}.tutorial__btn--next:hover{background:var(--gold-bright);border-color:var(--gold-bright);box-shadow:0 0 12px #c9a5554d}.tutorial__dots{display:flex;justify-content:center;gap:5px;margin-top:12px}.tutorial__dot{width:6px;height:6px;border-radius:50%;background:var(--bg-elevated);transition:all .2s ease}.tutorial__dot--active{background:var(--gold);transform:scale(1.3);box-shadow:0 0 6px #c9a55566}.tutorial__dot--done{background:var(--gold-dim)}.learn-hub{position:fixed;top:0;right:0;bottom:0;left:0;z-index:80;background:var(--bg-void);overflow-y:auto;animation:learnIn .35s cubic-bezier(.16,1,.3,1) both}@keyframes learnIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.learn-hub__header{position:sticky;top:0;z-index:5;padding:16px 24px;background:var(--bg-void);border-bottom:1px solid rgba(201,165,85,.08);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.learn-hub__header-left{display:flex;align-items:center;gap:12px}.learn-hub__back{width:36px;height:36px;border-radius:10px;border:1px solid var(--text-muted);background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease;flex-shrink:0}.learn-hub__back:hover{border-color:var(--gold-dim);color:var(--gold-bright);background:var(--gold-glow)}.learn-hub__title{font-size:28px;font-weight:600;color:var(--gold);margin:0}.learn-hub__subtitle{font-size:13px;color:var(--text-muted);margin:0;letter-spacing:.02em}.learn-hub__body{padding:24px;max-width:1100px;margin:0 auto}.learn-hub__section{margin-bottom:32px}.learn-hub__cat-title{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-dim);margin:0 0 14px 4px;padding-bottom:8px;border-bottom:1px solid rgba(201,165,85,.08)}.learn-hub__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}.learn-card{background:var(--bg-surface);border:1px solid rgba(255,255,255,.04);border-left:4px solid var(--card-accent, var(--gold-dim));border-radius:12px;padding:18px 18px 14px;display:flex;flex-direction:column;gap:10px;transition:all .25s cubic-bezier(.16,1,.3,1);animation:cardFadeIn .5s cubic-bezier(.16,1,.3,1) both}@keyframes cardFadeIn{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.learn-card:hover{transform:translateY(-3px);border-color:#ffffff14;box-shadow:0 8px 28px #00000040,0 0 0 1px #c9a5550f}.learn-card__top{display:flex;align-items:center;gap:10px}.learn-card__emoji{font-size:24px;line-height:1;flex-shrink:0}.learn-card__title{font-size:15px;font-weight:600;color:var(--ivory);margin:0;line-height:1.3}.learn-card__desc{font-size:12px;color:var(--text-secondary);line-height:1.55;margin:0}.learn-card__links{display:flex;flex-direction:column;gap:5px;margin-top:auto;padding-top:8px;border-top:1px solid rgba(255,255,255,.04)}.learn-card__link{display:flex;align-items:center;gap:7px;padding:5px 8px;border-radius:6px;font-size:11px;font-weight:500;text-decoration:none;transition:all .15s ease;letter-spacing:.01em}.learn-card__link--article{color:var(--text-secondary)}.learn-card__link--article:hover{color:var(--ivory-soft);background:var(--bg-hover)}.learn-card__link--video{color:#d45c5c}.learn-card__link--video:hover{color:#e87070;background:#d45c5c14}.learn-card__link svg{flex-shrink:0;opacity:.7}.learn-card__link:hover svg{opacity:1}@media (max-width: 600px){.learn-hub__header{padding:12px 16px}.learn-hub__body{padding:16px}.learn-hub__grid{grid-template-columns:1fr}.learn-hub__title{font-size:22px}.learn-hub__subtitle{display:none}}.app{display:flex;flex-direction:column;min-height:100vh}.app-content{position:fixed;top:0;left:0;right:0;z-index:20;padding:0 24px;background:var(--bg-void);border-bottom:1px solid rgba(201,165,85,.08)}.piano-section{position:fixed;top:64px;bottom:0;left:0;right:0;z-index:10;display:flex;flex-direction:column;border-radius:0}.piano-spacer{flex:1;background:linear-gradient(180deg,#0c0e14fa,#0c0e14eb)}