@view-transition{navigation:auto}::view-transition-old(main-content){animation:.2s ease-out both fade-out}::view-transition-new(main-content){animation:.3s ease-in both fade-in}@keyframes fade-out{0%{opacity:1}to{opacity:0}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.db-topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:28px;min-height:64px;padding:0 5vw;background:color-mix(in srgb,var(--paper) 92%,transparent);border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.db-brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink);font-weight:800;font-size:1.18rem;text-decoration:none;letter-spacing:-.02em}.db-brand img{width:28px;height:28px}.db-nav{display:flex;align-items:center;gap:4px}.db-nav a{display:inline-flex;align-items:center;gap:7px;padding:9px 12px;color:var(--text-secondary);border-radius:9px;text-decoration:none;font-weight:650}.db-nav a:hover,.db-nav a.active{color:var(--primary-hover);background:var(--accent-10)}.db-actions{margin-left:auto;display:flex;align-items:center;gap:9px}.midi-diagnostics{position:relative}.midi-status-dot{position:absolute;right:5px;bottom:5px;width:8px;height:8px;border:2px solid var(--paper);border-radius:50%}.midi-status-dot.unavailable{background:var(--error)}.icon-button{display:inline-grid;place-items:center;width:35px;height:35px;color:var(--text-secondary);background:transparent;border:1px solid var(--line);border-radius:9px;cursor:pointer}.icon-button:hover{color:var(--primary-hover);border-color:var(--primary-light)}.db-user{max-width:120px;overflow:hidden;color:var(--ink);border-radius:999px;text-overflow:ellipsis;white-space:nowrap;font-size:.85rem;font-weight:700;text-decoration:none}.db-account-link{display:inline-flex;min-height:35px;align-items:center;justify-content:center;gap:7px;padding:7px 11px;color:var(--text-secondary);border:1px solid var(--line);border-radius:9px;background:transparent;font-size:.85rem;font-weight:700;text-decoration:none;white-space:nowrap}.db-account-link:hover,.db-account-link:focus-visible,.db-account-link.active{color:var(--primary-hover);border-color:var(--primary-light);background:var(--accent-10);text-decoration:none}.db-user{display:inline-flex;align-items:center;gap:.35rem;padding:2px 6px 2px 2px}.db-user .user-avatar{flex-basis:1.9rem}.db-user-name{min-width:0;overflow:hidden;text-overflow:ellipsis}.db-user:hover,.db-user:focus-visible{color:var(--primary-hover);background:var(--accent-10);text-decoration:none}.db-app{flex:1 0 auto;width:min(1280px,calc(100% - 32px));min-width:0;max-width:100%;margin:0 auto;padding:42px 0 10px}.learning-page{display:grid;gap:var(--page-section-gap)}.learning-intro{max-width:700px}.learning-intro h1{margin:7px 0 10px;font-size:clamp(2rem,5vw,3.4rem);line-height:1.02;letter-spacing:-.045em}.learning-intro p{max-width:620px;color:var(--text-secondary);font-size:1.05rem;line-height:1.6}.course-grid,.progress-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:16px}.db-course-card,.progress-card{min-height:204px;text-align:left;padding:22px;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:0 6px 22px var(--ink-4);cursor:pointer;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}.db-course-card:hover{transform:translateY(-3px);border-color:var(--primary-light);box-shadow:0 12px 30px var(--accent-15)}.db-course-card h2,.progress-card h2{margin:16px 0 8px;font-size:1.1rem}.db-course-card p{min-height:44px;margin:0;color:var(--text-secondary);line-height:1.45}.course-visibility,.block-kind{display:inline-block;color:var(--primary-hover);font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.09em}.course-open{display:flex;align-items:center;gap:4px;margin-top:18px;color:var(--primary-hover);font-size:.85rem;font-weight:750}.curriculum-panel,.lesson-viewer{padding:28px;background:var(--paper);border:1px solid var(--line);border-radius:18px}.curriculum-panel header{border-bottom:1px solid var(--line);padding-bottom:17px}.curriculum-panel h2,.lesson-viewer h2{margin:5px 0 7px}.curriculum-panel header p,.lesson-viewer>p{margin:0;color:var(--text-secondary)}.curriculum-section{margin-top:28px}.curriculum-section>p{margin-top:-5px;color:var(--muted)}.curriculum-level{margin:17px 0 0;padding:15px;border:1px solid var(--line);border-radius:12px}.curriculum-level h4{margin:0 0 9px}.lesson-card{display:flex;align-items:center;width:100%;gap:10px;padding:12px 8px;color:var(--ink);text-align:left;background:transparent;border:0;border-top:1px solid var(--line);cursor:pointer}.lesson-card:hover strong{color:var(--primary-hover)}.lesson-card span:nth-child(3){display:grid;gap:3px;flex:1}.lesson-card small{color:var(--muted)}.lesson-number{color:var(--muted);font-size:.82rem}.lesson-status{width:9px;height:9px;border:2px solid var(--muted);border-radius:50%}.lesson-status.in_progress{border-color:var(--warning);background:var(--warning)}.lesson-status.completed{border-color:var(--ok);background:var(--ok)}.lesson-status.locked{border-color:var(--line);background:var(--line)}.lesson-viewer{display:grid;gap:18px}.lesson-block{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px;border:1px solid var(--line);border-radius:12px}.lesson-block h3{margin:5px 0}.lesson-block p{margin:0;color:var(--text-secondary)}.practice-action{display:grid;gap:7px;flex:0 0 auto}.practice-action button,.db-state button{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 14px;color:#fff;background:var(--primary);border:0;border-radius:9px;cursor:pointer;font-weight:750}.practice-action button:disabled{opacity:.7}.practice-action small{max-width:210px;color:var(--error)}.practice-shell{display:grid;gap:14px}.back-link{justify-self:start;display:inline-flex;align-items:center;gap:5px;color:var(--primary-hover);background:none;border:0;cursor:pointer;font-weight:700}.db-state{display:flex;align-items:center;justify-content:center;gap:10px;min-height:150px;padding:22px;color:var(--text-secondary);text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:16px}.db-state.error{display:grid;color:var(--error)}.db-state.error p{margin:0;color:var(--text-secondary)}.db-state.error button{justify-self:center}.db-spinner{width:20px;height:20px;border:3px solid var(--accent-20);border-top-color:var(--primary);border-radius:50%;animation:db-spin .7s linear infinite}@keyframes db-spin{to{transform:rotate(360deg)}}.progress-card strong{font-size:1.8rem}.progress-bar{height:8px;margin:15px 0 10px;overflow:hidden;background:var(--accent-10);border-radius:999px}.progress-bar span{display:block;height:100%;background:var(--primary);border-radius:inherit}.progress-card p{min-height:38px;color:var(--text-secondary)}.progress-card a{display:inline-flex;align-items:center;gap:3px;color:var(--primary-hover);font-weight:700;text-decoration:none}@media(max-width:480px){.db-account-link{width:36px;height:36px;min-height:36px;padding:0}.db-account-link span{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}}.course-menu{position:relative}.course-menu>summary{display:inline-flex;align-items:center;gap:7px;padding:9px 12px;color:var(--text-secondary);border-radius:9px;cursor:pointer;font-weight:650;list-style:none}.course-menu>summary::-webkit-details-marker{display:none}.course-menu>summary:hover,.course-menu.active>summary,.course-menu[open]>summary{color:var(--primary-hover);background:var(--accent-10)}.course-menu>summary svg:last-child{transition:transform .16s ease}.course-menu[open]>summary svg:last-child{transform:rotate(180deg)}.course-menu-popover{position:absolute;top:calc(100% + 12px);left:0;z-index:30;display:grid;width:min(340px,calc(100vw - 32px));padding:8px;background:var(--paper);border:1px solid var(--line);border-radius:13px;box-shadow:0 18px 42px var(--ink-15)}.course-menu-heading{padding:8px 10px 6px;color:var(--muted);font-size:.69rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.course-menu-popover button,.course-menu-progress{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;padding:10px;color:var(--ink);text-align:left;background:transparent;border:0;border-radius:8px;cursor:pointer;font:inherit;font-size:.88rem}.course-menu-popover button:hover,.course-menu-popover button.selected,.course-menu-progress:hover,.course-menu-progress.selected{color:var(--primary-hover);background:var(--accent-10)}.course-menu-popover button span,.course-menu-progress span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-menu-popover small{flex:0 0 auto;color:var(--primary-hover);font-size:.68rem;font-weight:750}.course-menu-state{padding:10px;color:var(--muted);font-size:.84rem}.course-menu-progress{justify-content:flex-start;margin-top:6px;border-top:1px solid var(--line);text-decoration:none}.course-menu-progress small{margin-left:auto;max-width:155px;overflow:hidden;color:var(--muted);font-size:.72rem;text-overflow:ellipsis;white-space:nowrap}.compact-curriculum{padding:0;overflow:hidden}.compact-curriculum>.course-overview{display:grid;grid-template-columns:minmax(0,1fr) minmax(250px,.62fr);gap:32px;align-items:end;padding:28px 30px 24px;background:linear-gradient(135deg,var(--paper),var(--accent-6))}.midi-learning-note{display:grid;gap:5px;margin:0;padding:15px 18px;border-left:3px solid var(--primary);background:color-mix(in srgb,var(--accent-6) 72%,var(--paper))}.midi-learning-note header{padding:0;border:0}.midi-learning-note h2{margin:0;color:var(--primary-hover);font-size:1.05rem;line-height:1.3}.midi-learning-note p{max-width:880px;margin:0;color:var(--text-secondary);font-size:.88rem;line-height:1.5}.midi-learning-note-mobile-title,.midi-learning-note-mobile-copy{display:none}.connection-notice{display:grid;grid-template-columns:auto minmax(0,1fr);gap:13px;margin:24px 30px 0;padding:17px 19px;background:linear-gradient(135deg,var(--gold-10),var(--accent-5));border:1px solid var(--gold-25);border-radius:14px}.connection-notice-icon{display:grid;place-items:center;width:42px;height:42px;color:var(--primary-hover);background:var(--paper);border:1px solid var(--accent-15);border-radius:12px}.connection-notice-copy{display:grid;gap:5px}.connection-notice-copy .eyebrow{color:var(--primary-hover)}.connection-notice-copy h2{margin:0;font-size:1.05rem}.connection-notice-copy p{max-width:820px;margin:0;color:var(--text-secondary);line-height:1.5}.connection-notice-link{display:inline-flex;align-items:center;justify-self:start;gap:3px;margin-top:3px;color:var(--primary-hover);font-size:.86rem;font-weight:800;text-decoration:underline;text-underline-offset:3px}.connection-notice-link:hover{color:var(--primary)}.connection-notice-link:focus-visible{outline:3px solid var(--primary-light);outline-offset:3px;border-radius:4px}.course-overview h1{margin:4px 0 7px;font-size:clamp(1.55rem,3vw,2.15rem);letter-spacing:-.035em}.course-overview p{max-width:670px;margin:0;color:var(--text-secondary);line-height:1.55}.course-metrics{align-self:center}.course-metrics>strong{display:block;font-size:1.45rem}.course-metrics>strong small{color:var(--muted);font-size:.8rem;font-weight:600}.course-metrics .progress-bar{margin:9px 0}.next-lesson{display:flex;align-items:center;gap:6px;color:var(--text-secondary);font-size:.78rem}.next-lesson a{color:var(--primary-hover);font-weight:700;text-decoration:underline;text-underline-offset:2px}.next-lesson a:hover{color:var(--primary)}.curriculum-stream{display:grid;gap:24px;padding:24px 30px 30px}.compact-curriculum .curriculum-section{margin:0}.compact-curriculum .curriculum-section>header{display:flex;gap:14px;align-items:flex-start;padding:0 0 13px;border-bottom:1px solid var(--line)}.section-label{padding-top:4px;color:var(--primary-hover);font-size:.67rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}.compact-curriculum .curriculum-section h2{margin:0;font-size:1.15rem}.compact-curriculum .curriculum-section header p{margin:4px 0 0;color:var(--muted);font-size:.86rem}.compact-curriculum .curriculum-level{margin:13px 0 0;padding:0;overflow:hidden;border:1px solid var(--line);border-radius:11px}.level-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:11px 14px;background:var(--accent-5)}.level-heading>div{display:flex;align-items:baseline;gap:8px}.level-heading span{color:var(--muted);font-size:.68rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.level-heading h3{margin:0;font-size:.92rem}.level-heading>small{color:var(--muted);font-size:.75rem}.lesson-list{display:grid}.compact-curriculum .lesson-card{min-height:58px;gap:11px;padding:9px 14px;border-top:1px solid var(--line)}.compact-curriculum .lesson-card:first-child{border-top:0}.compact-curriculum .lesson-card:hover,.compact-curriculum .lesson-card.selected{background:var(--accent-6)}.compact-curriculum .lesson-card.selected{box-shadow:inset 3px 0 0 var(--primary)}.lesson-copy{display:grid;min-width:0;gap:2px;flex:1}.lesson-copy strong,.lesson-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-copy strong{font-size:.88rem}.lesson-copy small{color:var(--muted);font-size:.76rem}.lesson-state{min-width:74px;color:var(--muted);font-size:.74rem;text-align:right}.lesson-status{display:inline-grid;place-items:center;flex:0 0 10px;color:var(--ok)}.lesson-status.completed{width:14px;height:14px;border:0;background:transparent}.lesson-number{min-width:21px}.lesson-viewer{padding:25px 30px}.lesson-content{display:grid;gap:12px}.progress-page{max-width:760px}.selected-course-progress{min-height:auto;max-width:560px;cursor:default}.selected-course-progress strong{display:block;margin-top:10px}.selected-course-progress p a{color:var(--primary-hover);font-weight:700;text-decoration:underline;text-underline-offset:2px}.selected-course-progress p a:hover{color:var(--primary)}.selected-course-progress .full-course-link{margin:.35rem 0 0}.selected-course-progress .full-course-link span{color:var(--text-secondary)}@media(max-width:720px){.course-menu-popover{left:-58px}.connection-notice{grid-template-columns:1fr;margin:16px 19px 0;padding:16px}.connection-notice-icon{width:38px;height:38px}.midi-learning-note{margin:0;padding:14px 15px}.midi-learning-note-desktop-title,.midi-learning-note-desktop-copy{display:none}.midi-learning-note-mobile-title,.midi-learning-note-mobile-copy{display:block}.midi-learning-note h2{font-size:.98rem}.midi-learning-note p{font-size:.84rem}.compact-curriculum>.course-overview{grid-template-columns:1fr;gap:16px;padding:21px 19px}.curriculum-stream{padding:19px;gap:20px}.lesson-state{display:none}.compact-curriculum .lesson-card{padding:10px}.lesson-copy strong{font-size:.84rem}.lesson-viewer{padding:20px 19px}}@media(max-width:720px){.db-brand-name{display:none}.db-topbar{gap:8px;padding:0 4vw}.db-nav{min-width:0;gap:2px}.db-nav a,.course-menu>summary{gap:6px;padding:8px 7px;font-size:.82rem;white-space:nowrap}.db-nav a svg,.course-menu>summary svg{width:18px;height:18px}.course-menu>summary svg:last-child{display:block;width:14px;height:14px}.db-user{display:none}.db-app{padding-top:28px}.lesson-block{align-items:flex-start;flex-direction:column}.practice-action,.practice-action button{width:100%}.curriculum-panel,.lesson-viewer{padding:19px}}@media(max-width:720px)and (orientation:portrait){.course-menu>summary svg:first-child,.journey-nav-link svg{display:none}}.admin-preview-indicator{display:inline-flex;align-items:center;gap:7px;margin-left:auto;padding:6px 8px 6px 10px;border:1px solid color-mix(in srgb,var(--primary) 45%,var(--line));border-radius:999px;color:var(--primary-hover);background:var(--accent-10);font-size:var(--text-xs);font-weight:800;white-space:nowrap}.admin-preview-indicator button{padding:4px 9px;border:0;border-radius:999px;color:var(--text-inverse);background:var(--primary);font:inherit;font-size:var(--text-xs);font-weight:800;cursor:pointer}.admin-preview-indicator button:hover{background:var(--primary-hover)}@media(max-width:700px){.admin-preview-indicator span{display:none}}:root{color-scheme:light;--primary: #28768A;--primary-hover: #236A7C;--primary-light: #78B7C5;--accent-warm: #FFC857;--accent-gold: #E1BD6D;--success: #0B775E;--error: #C93312;--warning: #8F5700;--bg: #FAF5EC;--paper: rgba(255, 255, 255, .92);--ink: #242424;--muted: #56666B;--accent: #28768A;--accent-deep: #236A7C;--accent-soft: rgba(40, 118, 138, .12);--line: rgba(36, 36, 36, .12);--ok: #0B775E;--warn: #8F5700;--text-secondary: #3D4649;--accent-strong: var(--accent-deep);--danger: var(--error);--paper-alt: rgba(255, 255, 255, .96);--surface-muted: #EFE8DE;--border: rgba(36, 36, 36, .16);--text-inverse: #fff;--ink-8: rgba(36, 36, 36, .08);--ink-20: rgba(36, 36, 36, .2);--accent-18: rgba(40, 118, 138, .18);--accent-3: rgba(40, 118, 138, .03);--accent-5: rgba(40, 118, 138, .05);--accent-6: rgba(40, 118, 138, .06);--accent-8: rgba(40, 118, 138, .08);--accent-10: rgba(40, 118, 138, .1);--accent-12: rgba(40, 118, 138, .12);--accent-15: rgba(40, 118, 138, .15);--accent-20: rgba(40, 118, 138, .2);--accent-25: rgba(40, 118, 138, .25);--accent-30: rgba(40, 118, 138, .3);--accent-35: rgba(40, 118, 138, .35);--accent-40: rgba(40, 118, 138, .4);--gold-6: rgba(255, 200, 87, .06);--gold-8: rgba(255, 200, 87, .08);--gold-10: rgba(255, 200, 87, .1);--gold-12: rgba(255, 200, 87, .12);--gold-15: rgba(255, 200, 87, .15);--gold-18: rgba(255, 200, 87, .18);--gold-20: rgba(255, 200, 87, .2);--gold-25: rgba(255, 200, 87, .25);--ink-3: rgba(36, 36, 36, .03);--ink-4: rgba(36, 36, 36, .04);--ink-5: rgba(36, 36, 36, .05);--ink-6: rgba(36, 36, 36, .06);--ink-10: rgba(36, 36, 36, .1);--ink-15: rgba(36, 36, 36, .15);--white-4: rgba(255, 255, 255, .04);--white-6: rgba(255, 255, 255, .06);--white-8: rgba(255, 255, 255, .08);--white-45: rgba(255, 255, 255, .45);--white-50: rgba(255, 255, 255, .5);--white-56: rgba(255, 255, 255, .56);--white-60: rgba(255, 255, 255, .6);--white-80: rgba(255, 255, 255, .8);--surface: #F5CDB4;--border-warm: #D9B382;--star-3: #FFC857;--star-2: #E1BD6D;--star-1: #D9B382;--star-3-bg: rgba(255, 200, 87, .2);--star-2-bg: rgba(225, 189, 109, .18);--star-1-bg: rgba(217, 179, 130, .14);--piano-key-white: #fff;--piano-key-black: #242424;--piano-key-stroke: #A7B1B4;--piano-label-muted: #39464A;--piano-label-strong: #1E2629;--piano-right-text: #236A7C;--piano-left-text: #8F5700;--piano-right-stroke: #28768A;--piano-left-stroke: #8F5700;--piano-right-fill: #c8e2ea;--piano-left-fill: #f5dfc5;--piano-right-chord: #8ec5d0;--piano-left-chord: #e5c8a0;--piano-right-black-chord: #2d7a8f;--piano-left-black-chord: #c47a1a;--piano-pressed: #F5CDB4;--piano-wrong-fill: #fdd5cc;--piano-wrong-text: #C93312;--piano-wrong-black-stroke: #8a2510;--piano-key-shadow: rgba(0, 0, 0, .06);--piano-key-black-top: #3a3a3a;--piano-key-black-bottom: #1a1a1a;--player-screen-bg: #d7e4e8;--player-surface: #cfdee3;--player-panel: #c8dbe1;--player-border: #86aab4;--player-tabs: #8fb4bf;--player-tab-text: #244e5a;--player-tab-active-bg: #f7fbfc;--player-tab-active-text: #0c2831;--player-tab-hover-bg: #b9d1d8;--player-tab-hover-text: #102f39;--player-preview-bg: #177e96;--player-preview-border: #176f85;--player-previewing-bg: #c8622e;--player-previewing-border: #a64d21;--player-control-bg: #f2f8f9;--player-control-text: #0e5365;--player-next-bg: #b9dce4;--player-next-text: #07546a;--player-midi-bg: #f3fafb;--player-midi-text: #07566c;--player-midi-border: #167f98;--player-connected-bg: #08785f;--player-connected-border: #07644f;--player-score-bg: #f8fbfc;--player-score-control-bg: rgba(207, 226, 231, .95);--player-score-control-border: #78a5b1;--player-score-control-text: #123f4a;--player-follow-bg: #087d95;--player-tab-shadow: rgba(21, 75, 90, .28);--player-preview-shadow: rgba(13, 78, 94, .3);--player-score-shadow: rgba(19, 68, 81, .2);--rh-next: #78B7C5;--lh-next: #F1BB7B;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;--font-display: "Playfair Display", "Georgia", serif;--font-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;--text-2xs: .68rem;--text-xs: .75rem;--text-sm: .82rem;--text-base: .9rem;--text-md: .95rem;--text-lg: 1.1rem;--text-xl: 1.35rem;--text-2xl: 1.8rem;--text-3xl: clamp(3.2rem, 8vw, 5.8rem);--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--space-3xl: 72px;--page-section-gap: 3px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--radius-xl: 24px;--radius-pill: 999px;--shadow-sm: 0 2px 8px rgba(50, 42, 25, .06);--shadow-md: 0 8px 24px rgba(50, 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var(--transition-fast)}.exercise-card:first-child{padding-top:0;border-top:0}.exercise-rank,.outline-index{display:grid;place-items:center;font-weight:700}.exercise-rank{width:40px;height:40px;border-radius:50%;background:var(--accent-soft);color:var(--accent-deep);font-size:var(--text-md);transition:background var(--transition-fast),color var(--transition-fast)}.exercise-copy,.outline-copy{min-width:0;display:grid}.exercise-copy{gap:12px}.goal-copy{padding:14px 16px;border-radius:var(--radius-md);background:var(--ink-4);font-size:var(--text-md);color:var(--text-secondary)}.goal-panel,.license-panel{padding:18px}.license-panel p+p{margin-top:8px}.outline-compact-grid{display:grid;grid-template-columns:repeat(auto-fill,36px);gap:6px;padding:4px 0}.outline-compact-item{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;font-size:var(--text-sm);font-weight:600;color:var(--muted);background:#00000008;border:1.5px solid transparent;text-decoration:none;transition:all var(--transition-fast);cursor:pointer}.outline-compact-item:hover{background:var(--accent-8);color:var(--ink)}.outline-compact-item.active{background:var(--accent);color:#fff;border-color:var(--accent-deep);font-weight:700}.outline-compact-item.done{background:var(--ok);color:#fff}.outline-compact-item.done.active{background:var(--accent)}[data-theme=dark] .outline-compact-item{background:#ffffff0d}.outline-list{margin:0;padding:0;list-style:none;display:grid;gap:10px}.outline-link{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid transparent;border-radius:var(--radius-md);background:transparent;transition:background var(--transition-base),border-color var(--transition-base),transform var(--transition-base),box-shadow 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var(--transition-base);cursor:pointer;min-height:88px;border:1.5px solid transparent;position:relative;background-image:radial-gradient(circle 60px at var(--mx, 50%) var(--my, 50%),rgba(255,200,87,0),transparent)}.shelf-cell:hover{background-image:radial-gradient(circle 60px at var(--mx, 50%) var(--my, 50%),rgba(255,200,87,.18),transparent);transform:translateY(-5px) scale(1.03);box-shadow:var(--shadow-lg);z-index:2}.hover-note{position:absolute;top:-4px;right:6px;font-size:16px;color:var(--accent-gold);opacity:0;pointer-events:none;z-index:3}.hover-note:before{content:"♪"}.shelf-cell:hover .hover-note,.song-card:hover .hover-note{animation:note-rise .7s ease-out forwards}@keyframes 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cubic-bezier(.34,1.56,.64,1) both}.shelf-complete:before{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(135deg,transparent 30%,rgba(255,255,255,.2) 50%,transparent 70%);background-size:250% 250%;animation:shelf-shimmer 4s ease-in-out 1;pointer-events:none;z-index:1}@keyframes shelf-shimmer{0%,to{background-position:0% 0%}50%{background-position:100% 100%}}.shelf-complete .trophy-icon{transform:scale(1.3);filter:drop-shadow(0 2px 8px rgba(255,200,87,.6)) drop-shadow(0 0 4px rgba(255,200,87,.3))}@keyframes shelf-complete-in{0%{transform:scale(.9);opacity:.5}to{transform:scale(1);opacity:1}}.shelf-cell:hover .trophy-icon{animation:trophy-wiggle .4s ease}@keyframes trophy-wiggle{0%{transform:rotate(0)}25%{transform:rotate(-8deg)}75%{transform:rotate(8deg)}to{transform:rotate(0)}}.shelf-complete .shelf-cell-bar-fill{background:var(--accent-warm)}.shelf-complete .shelf-cell-label{color:var(--accent-gold)}.shelf-placeholder{min-height:88px;border-radius:var(--radius-sm);background:#00000004;opacity:.5}.shelf-row-full{padding:0}.shelf-cell-wide{display:flex;align-items:center;gap:12px;padding:14px 18px;border-radius:var(--radius-md);text-decoration:none;color:inherit;transition:all var(--transition-base);cursor:pointer;border:1.5px solid transparent}.shelf-cell-wide:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.shelf-row-level{font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--muted);width:36px;height:36px;display:flex;align-items:center;justify-content:center;text-align:center;flex-shrink:0;background:#00000008;border-radius:50%}[data-theme=dark] .shelf-row-level{background:#ffffff0d}.shelf-wide-title{flex:1;font-size:var(--text-base);font-weight:600}.shelf-wide-progress{font-size:var(--text-sm);color:var(--muted);font-weight:600;white-space:nowrap}.shelf-wide-bar{width:80px;flex-shrink:0}.shelf-tier-beginner{padding:20px 16px}.shelf-tier-mastery{border-top:2px solid var(--accent)}.shelf-tier-mastery .shelf-cell-label{font-weight:800}.shelf-tier-beginner.shelf-pending{background:var(--accent-5)}.shelf-tier-intermediate.shelf-pending{background:linear-gradient(145deg,var(--accent-6),var(--gold-6))}.shelf-tier-mastery.shelf-pending{background:linear-gradient(145deg,var(--gold-8),rgba(241,187,123,.08))}.shelf-tier-mastery{border-top-color:var(--accent-gold)}@keyframes cellEnter{0%{opacity:0;transform:translateY(12px) scale(.92)}to{opacity:1;transform:translateY(0) scale(1)}}.catalog-triptych .shelf-cell,.catalog-triptych .shelf-cell-wide{animation:cellEnter .4s cubic-bezier(.16,1,.3,1) both;animation-delay:calc(var(--cell-idx, 0) * 30ms + .2s)}.catalog-triptych .song-card{animation:cellEnter .4s cubic-bezier(.16,1,.3,1) both;animation-delay:calc(var(--cell-idx, 0) * 60ms + .2s)}.song-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.song-card{display:flex;flex-direction:column;align-items:center;gap:8px;padding:var(--space-lg) var(--space-md);border-radius:var(--radius-md);text-decoration:none;color:inherit;transition:all var(--transition-base);cursor:pointer;border:1.5px solid transparent;text-align:center;position:relative;background-image:radial-gradient(circle 60px at var(--mx, 50%) var(--my, 50%),rgba(255,200,87,0),transparent)}.song-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);background-image:radial-gradient(circle 60px at var(--mx, 50%) var(--my, 50%),rgba(255,200,87,.18),transparent)}.song-card-emoji{display:flex;align-items:center;justify-content:center;color:var(--accent-gold);opacity:.7;transition:opacity var(--transition-base),transform 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#78b7c500}50%{border-color:#78b7c566;box-shadow:0 0 12px #78b7c50f}}[data-theme=dark] .shelf-complete{background:linear-gradient(145deg,#ffc8571f,#ffc85740);border-color:var(--gold-20);box-shadow:inset 0 0 12px #ffc85726,0 0 16px #ffc85714,var(--shadow-sm)}[data-theme=dark] .shelf-complete .shelf-cell-label{color:var(--accent-gold)}[data-theme=dark] .shelf-placeholder{border-color:#faefd10f}[data-theme=dark] .shelf-cell-bar{background:#ffffff14}[data-theme=dark] .shelf-cell-wide{background:#ffffff0a;border-color:#faefd10f}[data-theme=dark] .shelf-cell-wide:hover{background:#ffffff12}[data-theme=dark] .song-card.shelf-pending{background:#ffffff0a;border-color:#faefd114}[data-theme=dark] .shelf-tier-beginner.shelf-pending{background:var(--accent-6)}[data-theme=dark] .shelf-tier-intermediate.shelf-pending{background:linear-gradient(145deg,var(--accent-8),var(--gold-6))}[data-theme=dark] .shelf-tier-mastery.shelf-pending{background:linear-gradient(145deg,var(--gold-10),rgba(241,187,123,.06))}@media(max-width:640px){.shelf-grid{gap:4px}.shelf-cell{min-height:72px;padding:8px 4px 6px}.shelf-cell .trophy-icon{width:20px;height:20px}.shelf-cell-fraction,.shelf-cell-stars{display:none}.song-grid{grid-template-columns:1fr;gap:8px}.song-card{flex-direction:row;text-align:left;gap:12px}.song-card-title{flex:1}}.progress-empty-state{display:flex;flex-direction:column;align-items:center;text-align:center;gap:var(--space-lg);padding:var(--space-3xl) var(--space-xl);border:1px solid var(--line);border-radius:var(--radius-xl);background:var(--accent-3)}.progress-empty-state h3{font-family:var(--font-display);font-size:1.4rem;margin:0}.progress-empty-state p{color:var(--text-secondary);max-width:40ch;margin:0}.progress-header{display:grid;gap:var(--space-lg);margin-bottom:var(--space-xl)}.progress-header .section-head{padding:0}.progress-header .progress-actions 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1fr}}@media(max-width:620px){.player-profile-grid{grid-template-columns:1fr}}.catalog-triptych{display:grid;grid-template-columns:1fr 1fr 1fr;gap:var(--space-lg);align-items:stretch}.catalog-triptych>.shelf-section{animation:reveal-up .6s cubic-bezier(.16,1,.3,1) both}.catalog-triptych>.shelf-section:nth-child(1){animation-delay:0ms}.catalog-triptych>.shelf-section:nth-child(2){animation-delay:.12s}.catalog-triptych>.shelf-section:nth-child(3){animation-delay:.24s}.catalog-triptych .shelf-section{padding:var(--space-lg) var(--space-md) var(--space-md)}.catalog-triptych .shelf-title{font-size:1.2rem}.catalog-triptych .shelf-header{margin-bottom:var(--space-md);flex-direction:column;align-items:flex-start;gap:var(--space-sm)}.catalog-triptych .shelf-header-bar{width:100%}.catalog-triptych .shelf-cell,.catalog-triptych .song-card,.catalog-triptych .shelf-cell-wide{animation:cell-appear .45s cubic-bezier(.16,1,.3,1) both;animation-delay:calc(var(--cell-idx, 0) * 30ms + .2s)}@keyframes 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1fr}}@media(max-width:740px){.catalog-triptych{grid-template-columns:1fr}}.sidebar-shelves{display:flex;flex-direction:column;gap:var(--space-md)}.sidebar-shelf{display:flex;flex-direction:column;gap:var(--space-sm)}.sidebar-shelf-label{font-size:var(--text-xs);font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);padding-bottom:2px;border-bottom:1px solid var(--line)}.sidebar-shelf-grid{display:grid;gap:3px}.sidebar-shelf-cell{display:flex;align-items:center;justify-content:center;padding:6px 4px;border-radius:var(--radius-sm);text-decoration:none;transition:all var(--transition-fast);border:1.5px solid transparent;cursor:pointer;min-height:32px}.sidebar-shelf-cell:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm);z-index:2}.sidebar-shelf-celltext{font-size:var(--text-2xs);font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--ink)}.sidebar-shelf-cell-wide{display:flex;align-items:center;justify-content:center;padding:5px 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mascot-bounce{0%{transform:translateY(0)}to{transform:translateY(-8px)}}.score-spinner{display:flex;align-items:center;justify-content:center;flex-direction:column;min-height:180px;gap:12px;color:var(--muted);font-size:var(--text-base)}.score-spinner:before{content:"";width:28px;height:28px;border:2.5px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.score-skeleton{min-height:180px;background:linear-gradient(90deg,var(--line) 25%,rgba(255,255,255,.15) 50%,var(--line) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.star-rating{display:inline-flex;align-items:center;gap:2px;line-height:1}.star-icon{flex-shrink:0}.star-icon-filled{filter:drop-shadow(0 1px 2px rgba(255,200,87,.35))}.celebration-overlay{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;background:#1e1a168c;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:overlay-in .3s ease-out}@keyframes overlay-in{0%{opacity:0}to{opacity:1}}.celebration-overlay:before{content:"";position:absolute;top:50%;left:50%;width:500px;height:500px;transform:translate(-50%,-50%);background-image:radial-gradient(circle 4px at 15% 25%,var(--star-3) 50%,transparent 50%),radial-gradient(circle 3px at 75% 15%,var(--accent) 50%,transparent 50%),radial-gradient(circle 4px at 35% 85%,var(--accent-warm) 50%,transparent 50%),radial-gradient(circle 3px at 85% 55%,var(--star-2) 50%,transparent 50%),radial-gradient(circle 4px at 10% 65%,var(--primary-light) 50%,transparent 50%),radial-gradient(circle 3px at 55% 8%,var(--accent-gold) 50%,transparent 50%),radial-gradient(circle 4px at 92% 35%,var(--star-3) 50%,transparent 50%),radial-gradient(circle 3px at 25% 45%,var(--accent) 50%,transparent 50%),radial-gradient(circle 3px at 65% 75%,var(--star-2) 50%,transparent 50%),radial-gradient(circle 4px at 45% 20%,var(--accent-warm) 50%,transparent 50%),radial-gradient(circle 3px at 80% 80%,var(--primary-light) 50%,transparent 50%),radial-gradient(circle 4px at 50% 50%,var(--accent-gold) 50%,transparent 50%);animation:confetti-burst 1s cubic-bezier(.16,1,.3,1) both;pointer-events:none;z-index:0}@keyframes confetti-burst{0%{opacity:1;transform:translate(-50%,-50%) scale(.2)}60%{opacity:1}to{opacity:0;transform:translate(-50%,-50%) scale(1.8)}}.celebration-card{position:relative;background:#faefd1d9;-webkit-backdrop-filter:blur(24px) saturate(1.4);backdrop-filter:blur(24px) saturate(1.4);border:1px solid rgba(255,255,255,.5);border-radius:var(--radius-xl);box-shadow:0 24px 80px #322a1938,0 8px 24px #322a191f,inset 0 1px #ffffff80;padding:48px 56px 40px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;max-width:440px;width:calc(100vw - 48px);animation:card-in .45s cubic-bezier(.34,1.56,.64,1);overflow:hidden}@keyframes card-in{0%{opacity:0;transform:scale(.75) translateY(24px)}to{opacity:1;transform:scale(1) translateY(0)}}.celebration-stars{display:flex;gap:12px;margin-bottom:8px;position:relative}.celebration-star{animation:star-pop .5s cubic-bezier(.34,1.56,.64,1) both}.celebration-star.filled{fill:var(--accent-warm);filter:drop-shadow(0 3px 8px rgba(255,200,87,.6)) drop-shadow(0 0 4px rgba(255,200,87,.3))}.celebration-star.empty{fill:none;stroke:var(--muted);stroke-width:1.2;opacity:.25}@keyframes star-pop{0%{opacity:0;transform:scale(0) rotate(-30deg)}60%{transform:scale(1.2) rotate(5deg)}to{opacity:1;transform:scale(1) rotate(0)}}.celebration-glow{position:absolute;top:20px;left:50%;transform:translate(-50%);width:200px;height:200px;background:radial-gradient(circle,rgba(255,200,87,.25) 0%,transparent 70%);animation:glow-burst 1.2s ease-out forwards;pointer-events:none;z-index:-1}@keyframes glow-burst{0%{transform:translate(-50%) scale(.3);opacity:1}to{transform:translate(-50%) scale(2.5);opacity:0}}.celebration-title{font-family:var(--font-display);font-size:2rem;font-weight:800;letter-spacing:-.03em;margin:0;color:var(--ink);line-height:1.1}.celebration-subtitle{font-size:var(--text-md);color:var(--muted);margin:0}.celebration-hands-free-hint{display:inline-flex;align-items:center;gap:6px;margin:-6px 0 0;color:var(--accent-strong);font-size:var(--text-sm);font-weight:700}.celebration-stats{display:flex;gap:var(--space-md);font-size:var(--text-base);color:var(--muted);font-weight:600}.celebration-stat-ok,.celebration-stat-warn{display:inline-flex;align-items:center;gap:4px}.celebration-stat-ok{color:var(--ok)}.celebration-stat-warn{color:var(--warn)}.celebration-actions{display:flex;gap:12px;margin-top:8px}.celebration-btn{padding:11px 28px}.celebration-particles{position:absolute;inset:0;pointer-events:none;overflow:hidden}.celebration-particle{position:absolute;border-radius:50%;animation:particle-rise 1.6s ease-out forwards}@keyframes particle-rise{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-120px) scale(.3)}}.tools-toggle{padding:5px 12px;border-radius:7px;border:1px solid var(--line);background:var(--white-60);color:var(--muted);font-size:var(--text-sm);font-weight:600;cursor:pointer;font-family:inherit;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast);white-space:nowrap;display:inline-flex;align-items:center;gap:4px}.tools-toggle:hover{border-color:var(--accent);color:var(--accent-deep)}.tools-toggle.open{background:var(--accent-soft);border-color:var(--accent-35);color:var(--accent-deep)}.tools-toggle-arrow{font-size:var(--text-xs);transition:transform var(--transition-fast)}.tools-toggle.open .tools-toggle-arrow{transform:rotate(180deg)}.tools-toggle-icon{display:none}.practice-hand-mode-selector{display:inline-flex;flex:0 0 auto;align-items:center;gap:4px;margin-left:auto}.practice-hand-mode-button{display:inline-grid;width:38px;height:38px;min-width:38px;min-height:38px;place-items:center;padding:0;border:1px solid var(--line);border-radius:7px;color:var(--muted);background:var(--white-60);cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),box-shadow var(--transition-fast)}.practice-hand-mode-button:hover{border-color:var(--accent);color:var(--accent-deep)}.practice-hand-mode-button.active{border-color:var(--accent-35);color:var(--accent-deep);background:var(--accent-soft);box-shadow:0 1px 3px #0000001a}.practice-hand-mode-button:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.practice-hand-icon{display:inline-grid;place-items:center;line-height:0}.practice-hand-icon-left{transform:scaleX(-1)}.practice-hand-icon-both{position:relative;width:24px;height:20px}.practice-hand-icon-both svg{position:absolute;width:17px;height:17px}.practice-hand-icon-both svg:first-child{left:0;bottom:0}.practice-hand-icon-both svg:last-child{right:0;top:0}.piano-connection-setting{min-width:min(100%,240px)}.midi-connection-status{display:inline-flex;min-width:0;align-items:center;gap:5px;color:var(--muted);font-size:var(--text-sm);font-weight:600}.midi-device-select-label{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:var(--text-sm);font-weight:600}.midi-device-select-label select{min-width:150px;max-width:240px;padding:4px 7px;border:1px solid var(--line);border-radius:7px;color:var(--ink);background:var(--paper);font:inherit}.midi-connection-status.granted{color:var(--ok)}.midi-connection-status.requesting{color:var(--accent-deep)}.midi-connection-status.error{color:var(--warn)}.midi-settings-btn{min-height:30px;padding:4px 9px;border:1px solid var(--accent-35);border-radius:7px;color:var(--accent-deep);background:var(--accent-soft);font:inherit;font-size:var(--text-sm);font-weight:700;cursor:pointer}.midi-settings-btn:disabled{opacity:.6;cursor:default}.practice-bar-tools{animation:tools-reveal .2s ease-out}@keyframes tools-reveal{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.tool-group{display:inline-flex;align-items:center;gap:4px;padding-right:10px;margin-right:6px;border-right:1px solid var(--line)}.tool-group:last-child{border-right:none;padding-right:0;margin-right:0}.tool-group-label{font-size:var(--text-2xs);font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-right:2px}.course-card[data-category=method]{border-left:3px solid var(--primary)}.course-card[data-category=technique]{border-left:3px solid var(--success)}.course-card[data-category=songs]{border-left:3px solid var(--warning)}.course-card[data-category=method] .eyebrow{color:var(--primary)}.course-card[data-category=technique] .eyebrow{color:var(--success)}.course-card[data-category=songs] .eyebrow{color:var(--warning)}.course-card[data-category=method] .course-progress-bar-fill{background:var(--primary)}.course-card[data-category=technique] .course-progress-bar-fill{background:var(--success)}.course-card[data-category=songs] .course-progress-bar-fill{background:var(--warning)}.course-card[data-category=method] .progress-ring-fill{stroke:var(--primary)}.course-card[data-category=technique] .progress-ring-fill{stroke:var(--success)}.course-card[data-category=songs] .progress-ring-fill{stroke:var(--warning)}.course-card[data-category=technique] .progress-ring-text{color:var(--success)}.course-card[data-category=songs] .progress-ring-text{color:var(--warning)}.course-card[data-category=technique] .pill{background:#0b775e1a;color:var(--success)}.course-card[data-category=songs] .pill{background:#dd8d291a;color:var(--warning)}.course-card.card-complete{border-left-color:var(--ok)}.course-card.card-complete .eyebrow{color:var(--ok)}.course-card.card-complete .progress-ring-fill{stroke:var(--ok)}.course-card.card-complete .progress-ring-text{color:var(--ok)}[data-theme=dark]{color-scheme:dark;--bg: #1e1a16;--paper: rgba(35, 30, 26, .95);--ink: #FFFFFF;--muted: #D6D6D6;--accent: #8FD4E2;--accent-deep: #79C4D5;--primary-hover: #8FD4E2;--primary-light: #A8E5EE;--accent-soft: rgba(143, 212, 226, .16);--accent-3: rgba(143, 212, 226, .03);--accent-5: rgba(143, 212, 226, .05);--accent-6: rgba(143, 212, 226, .06);--accent-8: rgba(143, 212, 226, .08);--accent-10: rgba(143, 212, 226, .1);--accent-12: rgba(143, 212, 226, .12);--accent-15: rgba(143, 212, 226, .15);--accent-20: rgba(143, 212, 226, .2);--accent-25: rgba(143, 212, 226, .25);--accent-30: rgba(143, 212, 226, .3);--accent-35: rgba(143, 212, 226, .35);--accent-40: rgba(143, 212, 226, .4);--gold-6: rgba(255, 200, 87, .05);--gold-8: rgba(255, 200, 87, .06);--gold-10: rgba(255, 200, 87, .08);--gold-12: rgba(255, 200, 87, .1);--gold-15: rgba(255, 200, 87, .12);--gold-18: rgba(255, 200, 87, .15);--gold-20: rgba(255, 200, 87, .18);--gold-25: rgba(255, 200, 87, .22);--ink-3: rgba(255, 255, 255, .03);--ink-4: rgba(255, 255, 255, .04);--ink-5: rgba(255, 255, 255, .05);--ink-6: rgba(255, 255, 255, .06);--ink-10: rgba(255, 255, 255, .1);--ink-15: rgba(255, 255, 255, .15);--white-4: rgba(255, 255, 255, .04);--white-6: rgba(255, 255, 255, .06);--white-8: rgba(255, 255, 255, .08);--white-45: rgba(255, 255, 255, .14);--white-50: rgba(255, 255, 255, .16);--white-56: rgba(255, 255, 255, .2);--white-60: rgba(255, 255, 255, .24);--white-80: rgba(255, 255, 255, .32);--line: rgba(255, 255, 255, .16);--ok: #72C782;--success: #72C782;--warn: #F0B35B;--warning: #F0B35B;--text-secondary: #F1F1F1;--paper-alt: rgba(48, 41, 35, .98);--surface-muted: #342D27;--border: rgba(255, 255, 255, .22);--text-inverse: #1E1A16;--accent-strong: var(--accent-deep);--danger: var(--error);--ink-8: rgba(255, 255, 255, .08);--ink-20: rgba(255, 255, 255, .2);--accent-18: rgba(143, 212, 226, .18);--surface: #55332C;--border-warm: #7F5539;--error: #FF765B;--piano-key-white: #e8dfd2;--piano-key-black: #1e1a16;--piano-key-stroke: #7D898D;--piano-label-muted: #39464A;--piano-label-strong: #181C1F;--piano-right-text: #236A7C;--piano-left-text: #7D4F00;--piano-right-stroke: #8FD4E2;--piano-left-stroke: #F0B35B;--piano-right-fill: #d9f1f4;--piano-left-fill: #f5dfc5;--piano-right-chord: #9edbe4;--piano-left-chord: #e5c8a0;--piano-right-black-chord: #79C4D5;--piano-left-black-chord: #F0B35B;--piano-pressed: #F5CDB4;--piano-wrong-fill: #ffd9cf;--piano-wrong-text: #C93312;--piano-wrong-black-stroke: #8a2510;--piano-key-shadow: rgba(0, 0, 0, .22);--piano-key-black-top: #3a3a3a;--piano-key-black-bottom: #1a1a1a;--player-screen-bg: #151210;--player-surface: var(--paper);--player-panel: #2A2520;--player-border: var(--line);--player-tabs: #3A322C;--player-tab-text: var(--muted);--player-tab-active-bg: var(--accent-10);--player-tab-active-text: var(--ink);--player-tab-hover-bg: var(--accent-12);--player-tab-hover-text: var(--accent);--player-preview-bg: var(--accent-deep);--player-preview-border: var(--accent);--player-previewing-bg: #C46C43;--player-previewing-border: #B65B36;--player-control-bg: var(--white-6);--player-control-text: var(--accent);--player-next-bg: var(--accent-12);--player-next-text: var(--accent);--player-midi-bg: var(--white-6);--player-midi-text: var(--accent);--player-midi-border: var(--accent-30);--player-connected-bg: var(--ok);--player-connected-border: var(--ok);--player-score-bg: #1E1A16;--player-score-control-bg: #2A2520;--player-score-control-border: var(--line);--player-score-control-text: var(--ink);--player-follow-bg: var(--accent-deep);--player-tab-shadow: rgba(0, 0, 0, .28);--player-preview-shadow: rgba(0, 0, 0, .3);--player-score-shadow: rgba(0, 0, 0, .2);--accent-gold: #E1BD6D;--accent-warm: #FFC857;--star-3: #FFC857;--star-3-bg: rgba(255, 200, 87, .15);--star-2-bg: rgba(225, 189, 109, .12);--star-1-bg: rgba(217, 179, 130, .08);background:radial-gradient(circle at top left,rgba(143,212,226,.08),transparent 32%),radial-gradient(circle at bottom right,rgba(85,51,44,.12),transparent 28%),linear-gradient(180deg,#151210,#1e1a16)}[data-theme=dark] .score-viewer-wrap{background:#1e1a16;box-shadow:0 4px 16px #0003,inset 0 0 0 1px #faefd10f}[data-theme=dark] .score-viewer{background:#fffbf4f2;border-radius:var(--radius-md);padding:var(--space-md);box-shadow:inset 0 0 20px #0000000d}[data-theme=dark] .practice-range-marker{--practice-range-marker-color: #77a6ff}[data-theme=dark] .practice-range-selected-measure{background:color-mix(in srgb,#77a6ff 8%,transparent)}[data-theme=dark] kbd{background:#ffffff12;border-color:#faefd126;box-shadow:0 1px #0003;color:var(--muted)}[data-theme=dark] .mode-tab.active{background:#ffffff1f;color:var(--ink);border-color:var(--accent-15);box-shadow:0 2px 6px #0003}[data-theme=dark] .course-nav-link,[data-theme=dark] .outline-link,[data-theme=dark] .input-card,[data-theme=dark] .metric-card,[data-theme=dark] .detail-stat{background:#ffffff0a}[data-theme=dark] .action-link.secondary,[data-theme=dark] .secondary-button{background:#ffffff12}[data-theme=dark] .panel,[data-theme=dark] .status-card{background:var(--paper)}[data-theme=dark] .top-nav{border-bottom-color:#78b7c514;box-shadow:0 1px #78b7c50a}[data-theme=dark] .hero-copy{background:transparent}[data-theme=dark] .shelf-method{background:linear-gradient(135deg,rgba(59,154,178,.06) 0%,var(--paper) 100%)}[data-theme=dark] .shelf-technique{background:linear-gradient(135deg,rgba(221,141,41,.06) 0%,var(--paper) 100%)}[data-theme=dark] .shelf-songs{background:linear-gradient(135deg,rgba(255,200,87,.06) 0%,var(--paper) 100%)}[data-theme=dark] .surface-card{background:var(--paper);box-shadow:var(--shadow-sm)}[data-theme=dark] .piano-keyboard-wrap{background:linear-gradient(180deg,#2a2520,#1e1a16);border-color:#faefd10f;box-shadow:0 4px 12px #0000004d,0 1px 3px #0003,inset 0 1px #ffffff0d}[data-theme=dark] .hero-copy h1{background:linear-gradient(135deg,var(--ink) 30%,var(--accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}[data-theme=dark] .hero-panel{background-color:transparent;background-image:linear-gradient(135deg,#78b7c55c,#ffc85738 40%,#f1bb7b4d)}[data-theme=dark] .hero-inner:before{background:repeating-linear-gradient(to bottom,transparent,transparent 15px,rgba(120,183,197,.08) 15px,rgba(120,183,197,.08) 16px)}[data-theme=dark] .hero-inner:after{background:repeating-linear-gradient(90deg,transparent 0px,transparent 18px,rgba(250,239,209,.06) 18px,rgba(250,239,209,.06) 19px,transparent 19px,transparent 30px,rgba(250,239,209,.03) 30px,rgba(250,239,209,.03) 31px)}[data-theme=dark] .hero-mascot-area:before{background:radial-gradient(circle,rgba(120,183,197,.18) 0%,transparent 70%)}[data-theme=dark] .hero-mascot-area:after{border-color:#78b7c51a}[data-theme=dark] .goal-copy{background:#ffffff0a}[data-theme=dark] .tag{background:#ffffff0f}[data-theme=dark] .swing-badge{background:#8c78b426;color:#a090c0}[data-theme=dark] .dynamic-badge{background:#e1bd6d26}[data-theme=dark] .action-link.primary,[data-theme=dark] .action-button,[data-theme=dark] .start-perform-btn{color:#1e1a16}[data-theme=dark] .celebration-card{background:#1e1a16d9;border-color:#ffffff1a;box-shadow:0 24px 80px #00000080,0 8px 24px #00000059,inset 0 1px #ffffff14}[data-theme=dark] .celebration-btn.secondary{background:#ffffff12}[data-theme=dark] .celebration-btn.primary{color:#1e1a16}[data-theme=dark] .tools-toggle{background:#ffffff0f}[data-theme=dark] .tools-toggle.open{background:var(--accent-soft)}[data-theme=dark] .tempo-select-btn,[data-theme=dark] .metronome-btn,[data-theme=dark] .sight-reading-btn,[data-theme=dark] .note-labels-btn,[data-theme=dark] .auto-loop-btn{background:#ffffff14;border-color:#faefd11f;color:var(--muted)}[data-theme=dark] .tempo-select-btn:hover,[data-theme=dark] .metronome-btn:hover,[data-theme=dark] .sight-reading-btn:hover,[data-theme=dark] .note-labels-btn:hover,[data-theme=dark] .auto-loop-btn:hover{border-color:var(--accent);color:var(--accent)}[data-theme=dark] .tempo-select-btn.active,[data-theme=dark] .metronome-btn.active,[data-theme=dark] .sight-reading-btn.active,[data-theme=dark] .note-labels-btn.active,[data-theme=dark] .auto-loop-btn.active{background:var(--accent-15);border-color:var(--accent-25);color:var(--accent)}[data-theme=dark] .preview-btn,[data-theme=dark] .score-zoom-btn{background:#ffffff14;border-color:#faefd11f}[data-theme=dark] .reset-btn{border-color:#faefd11f}[data-theme=dark] .tool-group-label{color:var(--muted)}[data-theme=dark] .exercise-table-row:nth-child(2n){background:#ffffff08}[data-theme=dark] .exercise-table-num{background:#ffffff0f}[data-theme=dark] .exercise-table-row:hover{background:var(--accent-6)}[data-theme=dark] .score-zoom-controls{background:#ffffff0a}[data-theme=dark] .practice-bar-wrap{border-color:var(--line)}[data-theme=dark] .practice-bar{border-color:transparent}[data-theme=dark] .practice-bar-fill{background:linear-gradient(90deg,var(--accent-6) 0%,var(--accent-15) 100%)}[data-theme=dark] .practice-bar-actions{border-top-color:var(--line)}[data-theme=dark] .tool-group{border-right-color:var(--line)}[data-theme=dark] .midi-connect-btn{border-color:var(--accent)}[data-theme=dark] .midi-connect-btn:hover:not(:disabled){color:#1e1a16;background:var(--accent)}@media(max-width:640px){.metric-grid{grid-template-columns:repeat(2,1fr)}.kbd-hints{display:none}.sidebar-nav-actions{gap:4px}.progress-actions{flex-direction:column;align-items:flex-start}.section-head{gap:10px}}.scroll-to-top{position:fixed;bottom:28px;right:28px;z-index:100;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--paper);color:var(--accent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--shadow-lg);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform var(--transition-base),box-shadow var(--transition-base),opacity var(--transition-base);animation:fade-in .3s 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span{min-width:0;gap:3px;padding:0 16px;background:transparent;border:0;border-right:1px solid color-mix(in srgb,var(--line) 75%,transparent);border-radius:0;font-size:var(--text-xs);line-height:1.25}.profile-weekly-recap-stats span:first-child{padding-left:0}.profile-weekly-recap-stats span:last-child{padding-right:0;border-right:0}.profile-weekly-recap-stats b{font-size:1.25rem;font-weight:750}.profile-weekly-recap-highlight{margin:18px 0 0;padding:11px 13px;color:var(--ink);background:color-mix(in srgb,var(--accent) 9%,transparent);border-left:3px solid var(--accent);border-radius:0 11px 11px 0;font-size:var(--text-sm)}.profile-weekly-recap-card>.action-link{align-self:flex-start;margin-top:18px;border-radius:12px;box-shadow:0 7px 16px color-mix(in srgb,var(--primary) 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var(--line);color:var(--muted);font-size:var(--text-sm)}.teacher-roster-search{display:flex;flex:1 1 280px;align-items:center;gap:8px;min-width:min(100%,280px);padding:8px 11px;border:1px solid var(--line);border-radius:10px;color:var(--muted);background:var(--paper)}.teacher-roster-search input{width:100%;min-width:0;padding:0;border:0;outline:0;color:var(--ink);background:transparent;font:inherit}.teacher-roster-search-button{flex:0 0 auto;min-height:1.9rem;padding:.25rem .55rem;font-size:var(--text-xs)}.teacher-roster-count{margin-left:auto;color:var(--muted);font-size:var(--text-sm);white-space:nowrap}.teacher-roster-filter-hint{margin:-4px 0 4px;color:var(--muted);font-size:var(--text-xs)}.teacher-roster-pagination{display:flex;align-items:center;justify-content:center;gap:16px;padding-top:12px;border-top:1px solid var(--line);color:var(--muted);font-size:var(--text-sm)}.teacher-roster-pagination 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