:root{color-scheme:dark;font-family:Avenir Next,Segoe UI,system-ui,sans-serif;color:#fff7de;background:#090d22;font-synthesis:none;--ink: #090d22;--stall: #121936;--stall-high: #1a2348;--paper: #fff7de;--muted: #bbc2dc;--mango: #ffc857;--guava: #ff5d8f;--mint: #4ee1b6;--sky: #73b7ff;--plum: #b996ff;--danger: #ff8a7a;--line: #39436b;--display: "Trebuchet MS", "Avenir Next", sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;min-width:320px;min-height:100vh;background:var(--ink);color:var(--paper);font-size:16px;line-height:1.55}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{color:inherit}a{color:var(--sky);text-underline-offset:4px}a:hover{color:var(--paper)}:focus-visible{outline:3px solid var(--mango);outline-offset:3px}::selection{color:var(--ink);background:var(--mango)}.skip-link{position:fixed;z-index:1000;top:8px;left:8px;padding:12px 16px;color:var(--ink);background:var(--paper);transform:translateY(-150%);border-radius:8px}.skip-link:focus{transform:translateY(0)}.site-header{display:flex;align-items:center;justify-content:space-between;max-width:1440px;min-height:76px;margin:0 auto;padding:12px clamp(20px,5vw,72px)}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--paper);font:700 1.25rem/1 var(--display);text-decoration:none;letter-spacing:.02em}.brand svg{width:36px;height:36px;fill:none;stroke:var(--mango);stroke-width:2.5}.brand svg path:nth-child(2){fill:var(--mango);stroke:none}.site-header nav,footer nav{display:flex;align-items:center;gap:24px}.site-header nav a,.nav-button{color:var(--muted);font-weight:700;text-decoration:none}.nav-button{min-height:44px;padding:0;border:0;background:none;cursor:pointer}.site-header nav a:hover,.nav-button:hover{color:var(--paper)}main{overflow:clip}.intro{position:relative;display:grid;grid-template-columns:minmax(0,.86fr) minmax(420px,1.14fr);align-items:center;gap:clamp(32px,6vw,96px);max-width:1440px;min-height:650px;margin:0 auto;padding:56px clamp(20px,5vw,72px) 112px}.intro:before{content:"";position:absolute;top:22%;left:-5%;width:230px;height:230px;background:radial-gradient(circle,rgba(255,200,87,.13),transparent 70%);pointer-events:none}.eyebrow{margin:0 0 12px;color:var(--mango);font-size:.78rem;font-weight:800;letter-spacing:.17em;text-transform:uppercase}h1,h2,h3,h4,p{margin-top:0}h1,h2{font-family:var(--display);letter-spacing:-.035em}h1{max-width:720px;margin-bottom:24px;font-size:clamp(3rem,7vw,6.5rem);line-height:.92}h1 em{color:var(--mango);font-style:normal}.intro-copy>p:not(.eyebrow){max-width:580px;margin-bottom:32px;color:var(--muted);font-size:clamp(1.05rem,1.6vw,1.25rem);line-height:1.6}.hero-art{position:relative;margin:0;transform:rotate(1.2deg)}.hero-art:before{content:"";position:absolute;inset:-12px 18px 14px -12px;border:1px solid rgba(255,200,87,.6);border-radius:31% 4% 28% 5%/5% 32% 6% 28%;transform:rotate(-2deg)}.hero-art img{position:relative;display:block;width:100%;height:auto;border:8px solid #241733;border-radius:32% 4% 28% 5%/5% 32% 6% 28%;box-shadow:0 32px 60px #0000006b}.hero-art figcaption{position:absolute;right:1rem;bottom:-2rem;max-width:280px;padding:10px 14px;color:var(--ink);background:var(--paper);font-size:.78rem;font-weight:800;transform:rotate(-2deg);box-shadow:5px 6px 0 var(--guava)}.button,.icon-button,.voice{display:inline-flex;min-height:44px;align-items:center;justify-content:center;gap:9px;padding:10px 17px;border:2px solid transparent;border-radius:8px 8px 12px 6px;font-weight:800;line-height:1.2;text-decoration:none;cursor:pointer;transition:transform .16s ease,background-color .16s ease,border-color .16s ease}.button:hover:not(:disabled),.icon-button:hover:not(:disabled),.voice:hover:not(:disabled){transform:translateY(-2px)}.button:active:not(:disabled),.icon-button:active:not(:disabled),.voice:active:not(:disabled){transform:translateY(1px)}.button:disabled,.icon-button:disabled{cursor:not-allowed;opacity:.45}.primary{color:#141427;background:var(--mango);box-shadow:4px 5px #754940}.primary:hover:not(:disabled){color:#090d22;background:#ffdc8a}.secondary{color:var(--paper);background:var(--stall-high);border-color:#66729e}.secondary:hover:not(:disabled){background:#25305b;border-color:var(--paper)}.quiet{color:var(--muted);background:transparent;border-color:var(--line)}.quiet:hover{color:var(--paper);border-color:var(--muted)}.danger{color:var(--danger)}.composer{position:relative;max-width:1440px;margin:0 auto 112px;padding:clamp(24px,4vw,56px);background:var(--stall);border:1px solid #303a62;border-radius:18px 32px 18px 36px;box-shadow:0 32px 90px #00000059}.composer:before{content:"";position:absolute;z-index:-1;inset:13px -10px -10px 12px;border:2px solid #34233d;border-radius:inherit}.section-heading{display:flex;align-items:start;justify-content:space-between;gap:24px;margin-bottom:28px}h2{margin-bottom:12px;font-size:clamp(2rem,4vw,3.5rem);line-height:1.04}h3{font-family:var(--display);font-size:1.4rem}.save-state{display:flex;flex:0 0 auto;gap:8px;align-items:center;padding:9px 12px;color:var(--mint);background:#4ee1b614;border:1px solid rgba(78,225,182,.35);border-radius:999px;font-size:.82rem;font-weight:700}.save-state span{font-size:.65rem}.song-title-wrap{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:16px;margin-bottom:24px}.song-title-wrap label,.field-label{color:var(--muted);font-size:.82rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}input,select,textarea{min-height:44px;color:var(--paper);background:#0d1330;border:1px solid #4d597f;border-radius:7px}input,textarea{padding:10px 12px}select{padding:8px 38px 8px 12px}input:hover,select:hover,textarea:hover{border-color:#7783ad}.song-title-wrap input{width:100%;padding:8px 0;background:transparent;border:0;border-bottom:1px dashed #66729e;border-radius:0;font:700 clamp(1.25rem,2vw,1.65rem)/1.3 var(--display)}.control-rack{display:grid;grid-template-columns:repeat(3,minmax(130px,.65fr)) minmax(260px,1.4fr);gap:12px;padding:18px;background:#0e1430;border-top:5px solid #29234a;border-radius:10px}.control-rack label{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:.78rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.tempo-label output{float:right;color:var(--paper);font-variant-numeric:tabular-nums}input[type=range]{width:100%;min-height:44px;padding:0;accent-color:var(--mango);background:transparent;border:0;cursor:pointer}.transport{display:flex;align-items:center;gap:12px;padding:20px 0;border-bottom:1px solid var(--line)}.transport p{margin:0 0 0 auto;color:var(--muted);font-size:.88rem;font-variant-numeric:tabular-nums}.voice-picker{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px 0 8px}.voice-picker p{margin-bottom:2px}.hint{color:var(--muted);font-size:.82rem}.voice-buttons{display:flex;flex-wrap:wrap;gap:8px}.voice{padding:9px 12px;color:var(--muted);background:#0c122c;border-color:#343f67;font-size:.88rem}.voice.active{color:var(--paper);background:#20294f;border-color:var(--paper)}.swatch{width:14px;height:14px;border-radius:4px 4px 5px 3px;box-shadow:inset 0 0 0 2px #ffffff40}.v-lantern{background:var(--guava)}.v-reed{background:var(--mint)}.v-bell{background:var(--sky)}.v-pluck{background:var(--plum)}.v-kick{background:var(--mango)}.v-clap{background:#ff9d6c}.bar-nav{display:flex;align-items:center;justify-content:center;gap:16px;padding:16px 0 8px;font-variant-numeric:tabular-nums}.icon-button{width:44px;padding:0;color:var(--paper);background:#101731;border-color:var(--line);font-size:1.25rem}.grid-help{margin:0 0 10px 70px;color:var(--muted);font-size:.8rem}.grid-scroll{display:grid;grid-template-columns:60px minmax(690px,1fr);gap:10px;overflow-x:auto;padding:6px 3px 16px;scrollbar-color:var(--mango) #0d132c}.pitch-labels{display:grid;grid-template-rows:repeat(var(--rows, 16),44px);gap:4px;position:sticky;left:0;z-index:2;padding-right:4px;background:var(--stall)}.pitch-labels span{overflow:hidden;color:var(--muted);font-size:.66rem;line-height:44px;text-align:right;text-overflow:ellipsis;white-space:nowrap}.pitch-labels span:nth-last-child(-n+2){color:var(--mango);font-weight:800}.note-grid{display:grid;grid-template-columns:repeat(16,minmax(40px,1fr));grid-template-rows:repeat(var(--rows, 16),44px);gap:4px;min-width:690px}.note-cell{position:relative;min-width:40px;min-height:44px;padding:0;background:#1b2448;border:1px solid #3e4a73;border-radius:5px 5px 7px 4px;cursor:pointer;box-shadow:inset 0 -3px #0003;transition:transform .12s ease,background-color .12s ease,box-shadow .12s ease}.note-cell.beat{border-left-color:#7a85ab}.note-cell:hover{background:#2a3560}.note-cell.active{transform:translateY(-2px);border-color:#ffffffb3;box-shadow:0 0 12px color-mix(in srgb,currentColor 50%,transparent),inset 0 -3px #0003}.note-cell.active span{position:absolute;top:5px;right:5px;width:5px;height:5px;background:var(--paper);border-radius:50%}.note-cell.active.v-lantern{color:var(--guava);background:var(--guava)}.note-cell.active.v-reed{color:var(--mint);background:var(--mint)}.note-cell.active.v-bell{color:var(--sky);background:var(--sky)}.note-cell.active.v-pluck{color:var(--plum);background:var(--plum)}.note-cell.active.v-kick{color:var(--mango);background:var(--mango)}.note-cell.active.v-clap{color:#ff9d6c;background:#ff9d6c}.note-cell.playing:after{content:"";position:absolute;inset:-3px;border:3px solid 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strong{font-size:1.05rem}.class-steps small{color:var(--muted);font-size:.9rem}footer{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:start;padding:48px max(24px,calc((100vw - 1300px)/2));color:var(--muted);background:#06091a;border-top:1px solid #262e52}footer p{margin:8px 0 0;font-size:.88rem}.footer-brand{color:var(--paper)}.credit{grid-column:1 / -1;padding-top:24px;border-top:1px solid #202746}.toast{position:fixed;z-index:200;right:20px;bottom:max(20px,env(safe-area-inset-bottom));max-width:min(420px,calc(100vw - 40px));padding:13px 17px;color:var(--ink);background:var(--paper);border:2px solid var(--ink);border-radius:8px;box-shadow:6px 7px 0 var(--mango);font-weight:750;opacity:0;transform:translateY(18px);pointer-events:none;transition:opacity .18s ease,transform .18s ease}.toast.show{opacity:1;transform:translateY(0)}.offline-banner{position:fixed;z-index:150;top:0;left:50%;padding:8px 15px;color:#161124;background:var(--mango);border-radius:0 0 9px 9px;font-size:.82rem;font-weight:800;transform:translate(-50%)}dialog{width:min(820px,calc(100vw - 28px));max-height:min(88vh,900px);padding:0;color:var(--paper);background:var(--stall);border:1px solid #66729e;border-radius:14px 26px 14px 22px;box-shadow:0 30px 100px #000}dialog::backdrop{background:#030510c7;backdrop-filter:blur(5px)}.dialog-header{position:sticky;z-index:3;top:0;display:flex;align-items:start;justify-content:space-between;padding:24px 28px 16px;background:var(--stall);border-bottom:1px solid var(--line)}.dialog-header h2{margin:0;font-size:2.25rem}#gallery-start,#gallery-board,#gallery-student{padding:28px}#gallery-start>p{color:var(--muted)}details label{display:block;margin-bottom:6px;color:var(--muted);font-size:.82rem;font-weight:800}.submit-row{display:flex;flex-wrap:wrap;gap:8px}.code-ticket{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:17px;color:var(--ink);background:var(--mango);border-radius:7px 12px 7px 10px}.code-ticket span{font-size:.8rem;font-weight:800;text-transform:uppercase}.code-ticket strong{margin-right:auto;font:800 1.3rem/1.15 var(--display)}.code-ticket .quiet{color:var(--ink);border-color:#090d2273}.privacy-note{margin:14px 0 24px;color:var(--muted);font-size:.82rem}.student-pass-title{color:var(--paper);font-size:1.05rem}.pass-steps{display:grid;gap:10px;margin:0 0 24px;padding:16px 16px 16px 36px;color:var(--muted);background:#0b112b;border-left:4px solid var(--mint);border-radius:4px 10px 10px 4px;font-size:.9rem}details{padding:18px 0;border-top:1px solid var(--line)}details summary{min-height:44px;font-weight:800;cursor:pointer}.submit-row input{flex:1 1 180px}.teacher-collect textarea{display:block;width:100%;margin-bottom:10px;resize:vertical}.gallery-list-heading{display:flex;align-items:center;justify-content:space-between;margin-top:14px}.gallery-list-heading h3{margin:0}.gallery-list-heading span{color:var(--muted);font-size:.85rem}.gallery-list{margin-top:10px;border-top:1px 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