.screen{position:relative;min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px}.screen .card{z-index:1}.card{background:var(--surface);border-radius:var(--radius);padding:clamp(28px,6vw,56px);width:min(520px,92vw);text-align:center;display:flex;flex-direction:column;align-items:center;gap:18px;box-shadow:0 12px 40px #00000014}.card__title{margin:0;font-size:clamp(2rem,6vw,3rem);color:var(--text)}.card__subtitle{margin:0;font-size:clamp(1.1rem,3.5vw,1.5rem);color:var(--text-soft)}.big-button{font-family:var(--font);font-size:clamp(1.3rem,4vw,1.7rem);font-weight:700;color:#fff;background:var(--accent-button);border:none;border-radius:999px;padding:16px 48px;cursor:pointer;box-shadow:0 6px 0 0 var(--accent-button-deep);transition:transform var(--motion-med) var(--ease),opacity var(--motion-med) var(--ease)}.big-button:active{transform:translateY(4px);box-shadow:0 2px 0 0 var(--accent-button-deep)}.big-button:disabled{opacity:.45;cursor:default}.text-button{font-family:var(--font);font-size:1rem;color:var(--text-soft);background:none;border:none;cursor:pointer;text-decoration:underline;padding:6px 10px}.dev-stage-picker{position:fixed;top:18px;right:18px;z-index:20;display:grid;justify-items:end}.dev-stage-picker__button{width:48px;height:48px;display:grid;place-items:center;border:2px solid rgba(255,255,255,.72);border-radius:50%;background:#ffffff8a;color:#123868;cursor:pointer;font-family:var(--font);font-size:1.55rem;font-weight:900;line-height:1;box-shadow:0 8px 20px #1044781f}.dev-stage-picker__button:active{transform:translateY(2px)}.dev-stage-picker__panel{width:min(300px,calc(100vw - 36px));max-height:min(520px,calc(100vh - 88px));margin-top:10px;overflow-y:auto;display:grid;gap:8px;padding:10px;border:2px solid rgba(255,255,255,.72);border-radius:18px;background:#eef8fde6;box-shadow:0 16px 32px #1044782e;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.dev-stage-picker__item{min-height:40px;border:0;border-radius:999px;background:#ffffff8f;color:#123868;cursor:pointer;font-family:var(--font);font-size:.9rem;font-weight:900;text-align:left;padding:0 14px}.dev-stage-picker__item.is-current{background:linear-gradient(180deg,#fff,#aee5f8);box-shadow:inset 0 0 0 2px #2f7fd638}@media (max-width: 760px){.dev-stage-picker{top:auto;right:12px;bottom:12px}.dev-stage-picker__panel{max-height:min(420px,calc(100vh - 84px))}}.progress-card{gap:14px;text-align:left;align-items:stretch;max-height:92vh;overflow-y:auto}.progress-card .card__title,.progress-card .card__subtitle{text-align:center}.progress-empty{text-align:center;color:var(--text-soft);font-size:1.05rem;padding:12px 0}.progress-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.progress-stat{display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 10px;background:#faf8f3;border:2px solid #efece4;border-radius:14px}.progress-stat strong{font-size:clamp(1.3rem,4vw,1.7rem);color:var(--text)}.progress-stat span{font-size:.85rem;font-weight:700;color:var(--text-soft)}.progress-group{display:flex;flex-direction:column;gap:10px;padding-top:14px;border-top:2px solid #efece4}.progress-group__title{margin:0;font-size:clamp(1rem,3vw,1.2rem);font-weight:800;color:var(--text-soft)}.progress-notes{display:flex;flex-direction:column;gap:8px}.progress-note{display:flex;align-items:center;gap:12px}.progress-note__name{width:24px;font-weight:800;color:var(--text)}.progress-note__bar{flex:1;height:12px;border-radius:999px;background:#ece8df;overflow:hidden}.progress-note__fill{display:block;height:100%;border-radius:999px;background:var(--key-e);transition:width var(--motion-med) var(--ease)}.progress-note__pct{width:64px;text-align:right;font-weight:800;color:var(--text);display:flex;flex-direction:column;line-height:1.1}.progress-note__pct small{font-size:.72rem;font-weight:700;color:var(--text-soft)}.progress-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.progress-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;background:#faf8f3;border:2px solid #efece4;border-radius:12px}.progress-row__title{font-weight:700;color:var(--text)}.progress-row__meta{font-size:.85rem;font-weight:700;color:var(--text-soft);white-space:nowrap}.settings-card{position:relative;gap:14px;text-align:left;align-items:stretch;max-height:92vh;overflow-y:auto}.settings-done-top{position:sticky;top:0;align-self:flex-end;z-index:2;padding:6px 16px;border:none;border-radius:10px;background:#1e3a5f14;color:#1e3a5f;font-family:var(--font);font-size:.85rem;font-weight:700;cursor:pointer;transition:background .2s ease}.settings-done-top:hover{background:#1e3a5f26}.settings-card .card__title,.settings-card .card__subtitle{text-align:center}.settings-group{display:flex;flex-direction:column;gap:12px;padding:16px 0;border-top:2px solid #efece4}.settings-group__title{margin:0;font-size:clamp(1rem,3vw,1.2rem);font-weight:800;color:var(--text-soft)}.settings-account{margin:0;font-size:clamp(.9rem,2.4vw,1rem);font-weight:600;color:var(--text);word-break:break-word}.settings-row{display:flex;align-items:center;justify-content:space-between;gap:16px}.settings-row__label{font-size:clamp(.95rem,2.6vw,1.08rem);font-weight:700;color:var(--text)}.settings-switch{display:inline-flex;align-items:center;gap:10px;border:none;background:none;cursor:pointer;font-family:var(--font);flex-shrink:0}.settings-switch__track{width:56px;height:32px;border-radius:999px;background:#d8d3c8;position:relative;transition:background var(--motion-med) var(--ease)}.settings-switch.is-on .settings-switch__track{background:var(--key-e)}.settings-switch__thumb{position:absolute;top:3px;left:3px;width:26px;height:26px;border-radius:50%;background:#fff;box-shadow:0 2px 4px #0003;transition:transform var(--motion-med) var(--ease)}.settings-switch.is-on .settings-switch__thumb{transform:translate(24px)}.settings-switch__state{font-weight:800;font-size:.95rem;color:var(--text-soft);min-width:26px}.settings-range{display:flex;align-items:center;gap:12px;flex-shrink:0}.settings-range input[type=range]{width:clamp(120px,32vw,180px);accent-color:var(--key-d)}.settings-range__value{min-width:42px;text-align:right;font-weight:800;color:var(--text)}.settings-select{min-height:40px;border:2px solid rgba(58,58,64,.16);border-radius:10px;background:#fff;color:var(--text);font-family:var(--font);font-size:1rem;font-weight:700;padding:0 12px}.settings-fab{position:fixed;top:18px;left:18px;z-index:20;width:48px;height:48px;border-radius:50%;border:1px solid rgba(58,58,64,.16);background:#ffffffe6;box-shadow:0 8px 20px #3a3a401a;cursor:pointer;font-size:1.4rem;line-height:1}.settings-fab:active{transform:translateY(2px)}@media (max-width: 760px){.settings-fab{top:auto;left:12px;bottom:12px}}.start-card{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:16px;padding:56px 48px;background:#ffffff2e;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.4);border-radius:28px;box-shadow:0 8px 40px #1e3a5f1f;min-width:340px;width:min(420px,92vw)}.start-logo-icon{font-size:40px;margin-bottom:4px}.start-logo-title{font-size:42px;font-weight:700;color:#1e3a5f;letter-spacing:-1px;line-height:1.1;text-align:center;margin:0 0 32px}.start-logo-title span{color:#3b7dd8}.btn{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:15px 36px;border-radius:14px;font-size:16px;font-weight:600;font-family:var(--font);cursor:pointer;transition:all .2s ease;text-decoration:none;border:none;letter-spacing:.3px}.btn-primary{background:#1e3a5f;color:#fff;box-shadow:0 4px 16px #1e3a5f59}.btn-primary:hover{background:#16304f;box-shadow:0 6px 24px #1e3a5f73;transform:translateY(-1px)}.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px #1e3a5f4d}.btn-primary:disabled{opacity:.6;cursor:default}.btn-secondary{background:transparent;color:#1e3a5f;border:2px solid #1E3A5F;box-shadow:none}.btn-secondary:hover{background:#1e3a5f14;transform:translateY(-1px)}.btn-secondary:active{transform:translateY(0)}.btn-secondary:disabled{opacity:.6;cursor:default}.btn-tertiary{background:transparent;color:#4a6fa5;border:none;box-shadow:none;font-weight:500;font-size:14px;padding:10px 24px;width:auto}.btn-tertiary:hover{color:#1e3a5f;background:#1e3a5f0f;border-radius:10px}.btn-icon{font-size:18px}.start-divider{width:100%;height:1px;background:#1e3a5f1a;margin:4px 0}.play-counter{margin:0;padding:6px 18px;border-radius:999px;background:#1e3a5f0f;color:#4a6fa5;font-size:13px;font-weight:500;text-align:center;letter-spacing:.02em}.settings-fab{position:fixed;top:18px;left:18px;z-index:10;width:44px;height:44px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.4);border-radius:50%;background:#ffffff2e;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:#1e3a5f;font-size:1.3rem;cursor:pointer;box-shadow:0 4px 16px #1e3a5f1a;transition:all .2s ease}.settings-fab:hover{background:#ffffff52}.song-select__level{color:var(--text-soft);font-size:clamp(.95rem,2.5vw,1.08rem);font-weight:800}.song-list{display:flex;flex-direction:column;gap:14px;width:100%;margin-top:6px}.song-item{display:flex;align-items:center;gap:16px;font-family:var(--font);font-size:clamp(1.1rem,3.5vw,1.4rem);font-weight:700;color:var(--text);background:#fbf9f4;border:3px solid var(--key-d);border-radius:18px;padding:16px 22px;cursor:pointer;text-align:left;transition:transform var(--motion-med) var(--ease),background var(--motion-med) var(--ease)}.song-item:active{transform:translateY(3px)}.song-item__note{font-size:1.6rem;color:var(--key-d)}.song-item.is-soon{color:var(--text-soft);border-color:#ded8cc;background:#f4f1ea;cursor:default;opacity:.7}.song-item.is-soon .song-item__note{color:var(--text-soft)}.song-select__next{margin-top:18px;width:100%;font-family:var(--font);font-size:clamp(1.1rem,3.5vw,1.35rem);font-weight:800;color:#fff;background:var(--key-d);border:none;border-radius:18px;padding:16px 22px;cursor:pointer;transition:transform var(--motion-med) var(--ease),filter var(--motion-med) var(--ease)}.song-select__next:hover{filter:brightness(1.05)}.song-select__next:active{transform:translateY(3px)}.piano-key{position:relative;flex:1 1 0;min-width:0;height:100%;border:4px solid var(--glow);border-radius:0 0 14px 14px;background:#fff;cursor:pointer;font-family:var(--font);color:#2b2b30;display:flex;align-items:flex-end;justify-content:center;padding-bottom:8%;touch-action:none;box-shadow:inset 0 -10px 14px #0000000f;transition:background var(--motion-med) var(--ease)}.piano-key__label{font-size:clamp(1.6rem,5vw,3.6rem);font-weight:700;pointer-events:none}.key-c{--glow: var(--glow-c)}.key-d{--glow: var(--glow-d)}.key-e{--glow: var(--glow-e)}.key-f{--glow: var(--glow-f)}.key-g{--glow: var(--glow-g)}.key-a{--glow: var(--glow-a)}.key-b{--glow: var(--glow-b)}.piano-key.is-pressed{background:#e9e7e0}.piano-key.is-correct{background:#d9f2df;border-color:var(--key-e-deep);box-shadow:inset 0 -10px 14px #0000000a,0 0 28px #1f7a4347}.piano-key.is-wrong{background:#f9dddd;border-color:#d34b4b;animation:key-shake .22s var(--ease) both}.piano-key.is-inactive{cursor:default}.piano-key.is-glowing{z-index:3;animation:gentle-glow 2.2s var(--ease) infinite}@keyframes key-shake{0%,to{transform:translate(0)}30%{transform:translate(-4px)}60%{transform:translate(4px)}}@keyframes gentle-glow{0%,to{box-shadow:inset 0 -10px 14px #0000000f,0 0 0 0 transparent}50%{box-shadow:inset 0 -10px 14px #0000000f,0 0 48px 16px var(--glow)}}.piano{position:relative;width:min(900px,92vw);height:min(46vh,380px);margin:0 auto;--black-key-width: 9%;--black-key-half-width: 4.5%}.piano__whites{display:flex;width:100%;height:100%}.piano__blacks{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.black-key{position:absolute;top:0;width:var(--black-key-width);height:62%;padding:0;background:linear-gradient(180deg,#2a2a2e,#050507);border:0;border-radius:0 0 12px 12px;box-shadow:0 6px 10px #0006,inset 0 -6px 8px #ffffff14;color:#fff;font:inherit;z-index:2}.black-key.is-active{cursor:pointer;pointer-events:auto;touch-action:none}.black-key.is-pressed{transform:translateY(3px);background:linear-gradient(180deg,#17171b,#000);box-shadow:0 3px 7px #0006,inset 0 -3px 6px #ffffff0f}.black-key__label{position:absolute;left:50%;bottom:14px;transform:translate(-50%);font-size:clamp(.9rem,2vw,1.15rem);font-weight:800;line-height:1}.black-key--1{left:calc(14.286% - var(--black-key-half-width))}.black-key--2{left:calc(28.571% - var(--black-key-half-width))}.black-key--3{left:calc(57.143% - var(--black-key-half-width))}.black-key--4{left:calc(71.429% - var(--black-key-half-width))}.black-key--5{left:calc(85.714% - var(--black-key-half-width))}.instruction{margin:0;text-align:center;font-size:clamp(1.4rem,4.5vw,2.2rem);font-weight:700;color:var(--text);min-height:1.4em;line-height:1.2}.progress-dots{display:flex;gap:12px;justify-content:center;align-items:center}.progress-dot{width:14px;height:14px;border-radius:50%;background:#ded8cc;transition:background var(--motion-med) var(--ease),transform var(--motion-med) var(--ease)}.progress-dot.is-done{background:var(--key-e-deep)}.progress-dot.is-current{background:var(--key-d);transform:scale(1.25)}.hold-track{position:relative;width:100%;min-height:96px;overflow:hidden;display:flex;align-items:flex-start;padding-top:8px}.hold-track__inner{position:relative;display:flex;gap:28px;align-items:flex-start;will-change:transform;transition:transform .3s var(--ease)}.hold-cell{position:relative;flex:0 0 auto;transition:opacity var(--motion-med) var(--ease),transform var(--motion-med) var(--ease)}.hold-bar{position:relative;width:100%;height:52px;border:3px solid var(--bar);border-radius:12px;background:#fbf9f4;overflow:hidden}.bar-c{--bar: var(--glow-c)}.bar-d{--bar: var(--glow-d)}.bar-e{--bar: var(--glow-e)}.bar-f{--bar: var(--glow-f)}.bar-g{--bar: var(--glow-g)}.bar-a{--bar: var(--glow-a)}.bar-b{--bar: var(--glow-b)}.bar-rest{--bar: #c7c2b6}.hold-cell.is-current{opacity:1;transform:scale(1.06)}.hold-cell.is-upcoming{opacity:.4}.hold-cell.is-done{opacity:.25}.hold-bar__fill{position:absolute;left:0;top:0;height:100%;background:var(--bar);transition:width 60ms linear}.hold-bar__fill.is-paused{animation:hold-flash 1.1s var(--ease) infinite}@keyframes hold-flash{0%,to{opacity:1}50%{opacity:.75}}.hold-bar__tick{position:absolute;top:0;width:2px;height:100%;background:#0000001f;transform:translate(-1px)}.hold-bar__label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.3rem;color:var(--text);mix-blend-mode:multiply;pointer-events:none}.bar-rest .hold-bar__label{font-size:1rem;letter-spacing:2px;color:var(--text-soft)}.hold-bar__lyric{position:absolute;top:100%;left:50%;transform:translate(-50%);margin-top:8px;white-space:nowrap;font-size:.9rem;font-weight:600;color:var(--text-soft);pointer-events:none}.hold-bar__lyric-join{position:absolute;top:100%;left:calc(100% + 14px);transform:translate(-50%);margin-top:8px;font-size:.9rem;font-weight:600;color:var(--text-soft);pointer-events:none}.celebration{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:10}.celebration__card{background:var(--surface);border-radius:var(--radius);padding:clamp(24px,5vw,44px) clamp(32px,7vw,64px);text-align:center;box-shadow:0 16px 48px #0000001f;border:3px solid var(--accent);animation:pop-in var(--motion-slow) var(--ease) both}.celebration.is-big .celebration__card{border-color:var(--key-e-deep)}.celebration__star{font-size:clamp(2.5rem,9vw,4.5rem);line-height:1}.celebration__title{margin:12px 0 0;font-size:clamp(1.5rem,5vw,2.4rem);font-weight:700;color:var(--text)}.celebration__subtitle{margin:6px 0 0;font-size:clamp(1rem,3.5vw,1.4rem);color:var(--text-soft)}@keyframes pop-in{0%{opacity:0;transform:scale(.85)}60%{opacity:1;transform:scale(1.03)}to{opacity:1;transform:scale(1)}}.stage{position:relative;min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:clamp(16px,4vh,36px) 16px clamp(20px,5vh,44px);gap:16px}.stage>*:not(.music-decor):not(.celebration):not(.stage__finger-photo){position:relative;z-index:1}.stage__header{display:flex;flex-direction:column;align-items:center;gap:14px}.stage__finger-photo{position:fixed;top:clamp(12px,3vh,26px);left:clamp(12px,3vw,26px);z-index:10;width:clamp(180px,24vw,300px);aspect-ratio:1 / 1.05;border:2px solid rgba(68,83,117,.18);border-radius:8px;background:#ffffffc7;box-shadow:0 8px 18px #2a35531a;overflow:hidden;pointer-events:none}.stage__finger-photo img{display:block;width:100%;height:100%;object-fit:contain}@media (max-width: 1024px){.stage__finger-photo{top:12px;left:12px;width:clamp(120px,18vw,175px)}}@media (max-width: 760px){.stage__finger-photo{width:clamp(96px,28vw,132px)}}@media (max-width: 420px){.stage__finger-photo{width:clamp(82px,24vw,108px)}}.stage__level{font-size:clamp(1rem,3vw,1.3rem);font-weight:700;color:var(--text-soft)}.stage__level-title{font-weight:400}.stage__top{width:min(900px,92vw);min-height:64px;display:flex;align-items:center;justify-content:center}.stage__main{display:flex;flex-direction:column;align-items:center;gap:18px;flex:1 1 auto;justify-content:center;width:100%}.stage__finger-cue{min-width:154px;min-height:96px;display:grid;grid-template-rows:auto 1fr;place-items:center;padding:10px 22px 14px;border:2px solid rgba(68,83,117,.22);border-radius:8px;background:#ffffff9e;color:var(--text);box-shadow:0 10px 24px #2a355314}.stage__finger-cue span{font-size:.9rem;font-weight:700;color:var(--text-soft)}.stage__finger-cue strong{font-size:clamp(2.2rem,9vw,4rem);line-height:.95}.finger-level{position:relative;min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:clamp(16px,4vh,34px) 16px clamp(18px,4vh,34px);gap:16px;overflow:hidden}.finger-level>*:not(.music-decor){position:relative;z-index:1}.finger-level__header{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}.finger-level__eyebrow{color:var(--text-soft);font-size:clamp(.95rem,2.5vw,1.08rem);font-weight:700}.finger-level__title{margin:0;color:var(--text);font-size:clamp(1.75rem,5vw,2.7rem);line-height:1.05}.finger-level__intro{flex:1;width:min(960px,96vw);display:flex;align-items:center;justify-content:center}.both-hands-graphic{position:relative;width:min(920px,94vw);aspect-ratio:1266 / 726;animation:hands-settle .72s var(--ease) both}.both-hands-graphic img{display:block;width:100%;height:100%;object-fit:contain}.finger-level__focus{flex:1;width:min(1040px,96vw);display:grid;grid-template-columns:minmax(290px,1fr) minmax(260px,360px);align-items:center;justify-items:center;gap:clamp(16px,4vw,44px);animation:hand-focus-slide .64s var(--ease) both}.finger-level__focus--left{animation-name:hand-focus-slide-left}.finger-level__hand-zone{width:min(460px,84vw);position:relative;display:flex;align-items:center;justify-content:center}.finger-level__panel{min-height:260px;width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;text-align:center}.finger-level__ordinal{color:var(--text);font-size:clamp(3.8rem,12vw,7.2rem);font-weight:900;line-height:.95}.finger-level__prompt{margin:0;color:var(--text);font-size:clamp(1.25rem,4vw,2rem);font-weight:800;line-height:1.15}.finger-level__answers{width:100%;display:grid;grid-template-columns:repeat(auto-fit,minmax(84px,1fr));gap:10px}.finger-level__answer{min-height:86px;border:3px solid rgba(58,58,64,.14);border-radius:8px;background:#fff;color:var(--text);font-family:var(--font);font-weight:900;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;box-shadow:0 6px #3a3a401f;transition:transform var(--motion-med) var(--ease),border-color var(--motion-med) var(--ease),background var(--motion-med) var(--ease)}.finger-level__answer:active{transform:translateY(4px);box-shadow:0 2px #3a3a401f}.finger-level__answer span{font-size:clamp(1.25rem,4vw,1.75rem)}.finger-level__answer small{color:var(--text-soft);font-size:.9rem}.finger-level__answer.is-correct{border-color:var(--key-e);background:#e7f5eb}.finger-level__answer.is-wrong{border-color:#c95d5d;background:#fff1f1}.finger-level__quiz-note{min-height:1.3em;color:var(--text-soft);font-size:clamp(1rem,3vw,1.25rem);font-weight:800}.hand-graphic{position:relative;width:min(100%,430px);aspect-ratio:1 / 1.18;overflow:visible}.hand-graphic--compact{width:min(40vw,300px)}.hand-graphic img{display:block;width:100%;height:100%;object-fit:contain}@keyframes hands-settle{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes hand-focus-slide{0%{opacity:0;transform:translate(12vw)}to{opacity:1;transform:translate(0)}}@keyframes hand-focus-slide-left{0%{opacity:0;transform:translate(-12vw)}to{opacity:1;transform:translate(0)}}@media (max-width: 760px){.finger-level{justify-content:flex-start}.finger-level__focus{grid-template-columns:1fr;align-content:start;gap:8px}.finger-level__hand-zone{width:min(350px,88vw)}.finger-level__panel{min-height:210px}.hand-graphic--compact{width:min(45vw,220px)}.both-hands-graphic{width:min(560px,94vw)}}.ear-listen-button{display:inline-flex;align-items:center;gap:12px;font-family:var(--font);font-size:clamp(1rem,2.6vw,1.3rem);font-weight:700;color:var(--text);background:var(--surface);border:3px solid var(--accent-button);border-radius:999px;padding:12px 24px;cursor:pointer;box-shadow:0 6px 16px #4f97c72e;transition:transform var(--motion-med) var(--ease),background var(--motion-med) var(--ease)}.ear-listen-button:hover{background:#eef6fc}.ear-listen-button:active{transform:scale(.97)}.ear-listen-button__icon{font-size:1.6em;line-height:1}.ear-listen-button__label{pointer-events:none}.sheet-level{height:100dvh;min-height:100dvh;overflow:hidden;gap:clamp(6px,1.2vh,10px);padding:clamp(8px,1.6vh,14px) 12px clamp(10px,1.8vh,16px)}.sheet-level .stage__header{gap:clamp(6px,1vh,10px);flex:0 0 auto}.sheet-level__main{width:min(900px,94vw);flex:1 1 0;min-height:0;display:grid;grid-template-rows:minmax(130px,1fr) auto;align-items:center;justify-items:center;gap:clamp(6px,1.4vh,12px)}.sheet-panel,.sheet-review,.sheet-summary{width:min(820px,100%);border:2px solid rgba(58,58,64,.14);border-radius:8px;background:#ffffffc7;box-shadow:0 10px 24px #2a355314}.sheet-panel{padding:clamp(2px,.8vw,6px);overflow:hidden}.sheet-staff,.sheet-review-staff{display:block;width:100%;overflow:visible}.sheet-staff{height:clamp(150px,31vh,260px)}.sheet-review-staff{height:clamp(96px,21vh,170px)}.sheet-staff__lines line{stroke:#3a3a40a3;stroke-width:4;stroke-linecap:round}.sheet-clef{fill:var(--text);font-family:Times New Roman,Noto Music,Bravura,serif;font-size:252px;line-height:1;-webkit-user-select:none;user-select:none}.sheet-hit-zone{fill:#79b8e01a;stroke:#2f7fd629;stroke-width:2}.sheet-active-line{stroke:#2f7fd6;stroke-width:5;stroke-linecap:round}.sheet-note{--sheet-note-color: var(--glow-c);opacity:.88;transform-box:fill-box;transform-origin:center;transition:opacity .16s var(--ease),transform .16s var(--ease)}.sheet-note.is-active{opacity:1;animation:sheet-note-pulse .9s var(--ease) infinite}.sheet-note.is-correct{--sheet-note-color: var(--key-e-deep);animation:sheet-note-pop .32s var(--ease) both}.sheet-note.is-missed{--sheet-note-color: #d34b4b;animation:sheet-note-shake .26s var(--ease) both}.sheet-note--c{--sheet-note-color: var(--glow-c)}.sheet-note--d{--sheet-note-color: var(--glow-d)}.sheet-note--e{--sheet-note-color: var(--glow-e)}.sheet-note--f{--sheet-note-color: var(--glow-f)}.sheet-note--g{--sheet-note-color: var(--glow-g)}.sheet-note--a{--sheet-note-color: var(--glow-a)}.sheet-note--b{--sheet-note-color: var(--glow-b)}.sheet-note__head{fill:var(--sheet-note-color);stroke:#3a3a40b8;stroke-width:3}.sheet-note.is-long .sheet-note__head{filter:drop-shadow(0 4px 5px rgba(42,53,83,.16))}.sheet-note__head--long{stroke-width:3}.sheet-note__hold-fill{fill:#ffffff61;pointer-events:none;transition:width 40ms linear}.sheet-note__count-tick{stroke:#ffffffb8;stroke-width:2;stroke-linecap:round;pointer-events:none}.sheet-note__stem,.sheet-note__ledger{stroke:#3a3a40bd;stroke-width:4;stroke-linecap:round}.sheet-note__label{fill:#fff;stroke:none;font-family:var(--font);font-size:18px;font-weight:900;text-anchor:middle;dominant-baseline:central;pointer-events:none}.sheet-note__duration{pointer-events:none}.sheet-note__duration rect{fill:#fffffff5;stroke:var(--sheet-note-color);stroke-width:2;filter:drop-shadow(0 2px 3px rgba(42,53,83,.14))}.sheet-note__duration text{fill:var(--text);font-family:var(--font);font-size:12px;font-weight:900;text-anchor:middle;dominant-baseline:central}.sheet-review{min-height:0;max-height:100%;display:grid;grid-template-columns:minmax(180px,.9fr) minmax(250px,1.1fr);grid-template-rows:1fr auto;align-items:center;gap:clamp(8px,2vw,18px);padding:clamp(10px,2vw,18px)}.sheet-review__copy{min-width:0}.sheet-review__eyebrow{margin:0 0 6px;color:var(--text-soft);font-size:clamp(.9rem,2vw,1.05rem);font-weight:800;text-transform:uppercase;letter-spacing:0}.sheet-review h1{margin:0;color:var(--text);font-size:clamp(1.8rem,4.5vw,3.1rem);line-height:.95}.sheet-review p{margin:8px 0 0;color:var(--text-soft);font-size:clamp(.88rem,2vw,1.1rem);line-height:1.35}.sheet-review .sheet-review__duration-tip{display:flex;align-items:center;gap:8px;margin-top:12px;padding:9px 11px;border:1px solid rgba(47,127,214,.18);border-radius:8px;background:#79b8e01a;color:var(--text);font-size:clamp(.82rem,1.8vw,1rem);font-weight:750}.sheet-review__duration-tip span{flex:0 0 auto;color:var(--accent-button);font-size:1.35em}.sheet-review-staff{align-self:center}.sheet-review__start,.sheet-summary__continue{min-height:clamp(42px,6vh,50px);border:0;border-radius:8px;background:var(--accent-button);color:#fff;cursor:pointer;font-family:var(--font);font-size:clamp(1.1rem,3vw,1.5rem);font-weight:800;box-shadow:0 8px 0 var(--accent-button-deep)}.sheet-review__start{grid-column:1 / -1}.sheet-review__start:active,.sheet-summary__continue:active{transform:translateY(4px);box-shadow:0 4px 0 var(--accent-button-deep)}.sheet-game-status{width:min(860px,100%);min-height:1.6em;display:grid;grid-template-columns:minmax(96px,1fr) minmax(0,2fr) minmax(96px,1fr);align-items:center;gap:12px;color:var(--text-soft);font-size:clamp(1rem,2.8vw,1.3rem);font-weight:800}.sheet-game-status span{min-width:0}.sheet-game-status span:last-child{text-align:right}.sheet-game-status__instruction{color:var(--text);text-align:center;white-space:nowrap}.sheet-summary{display:grid;grid-template-columns:minmax(130px,.42fr) minmax(260px,1fr);gap:clamp(14px,3vw,28px);padding:clamp(10px,2vw,18px);align-items:center}.sheet-summary__score{min-height:clamp(86px,14vh,118px);border-radius:8px;display:grid;place-items:center;align-content:center;background:#f5fbf7;border:2px solid rgba(31,122,67,.18)}.sheet-summary__score span{color:var(--key-e-deep);font-size:clamp(3rem,9vw,5.6rem);font-weight:900;line-height:1}.sheet-summary__score p{margin:6px 0 0;color:var(--text-soft);font-size:clamp(.95rem,2.4vw,1.2rem);font-weight:700}.sheet-summary__columns{display:grid;grid-template-columns:1fr 1fr;gap:12px}.sheet-summary__list{min-height:96px;padding:14px;border-radius:8px;background:#fbf9f4;border:1px solid rgba(58,58,64,.12)}.sheet-summary__list h2{margin:0 0 8px;color:var(--text);font-size:clamp(1rem,2.4vw,1.25rem)}.sheet-summary__list p{margin:0;color:var(--text-soft);font-size:clamp(1rem,2.4vw,1.2rem);line-height:1.35}.sheet-summary__continue{grid-column:1 / -1}@media (max-width: 760px){.sheet-level{padding-top:8px}.sheet-level__main{grid-template-rows:auto auto;align-content:center}.sheet-panel,.sheet-review,.sheet-summary{width:min(620px,94vw)}.sheet-review{grid-template-columns:1fr;min-height:0}.sheet-review-staff{height:clamp(130px,25vh,190px)}}@media (max-height: 720px){.sheet-staff{height:clamp(124px,27vh,200px)}.sheet-review-staff{height:clamp(82px,18vh,130px)}.sheet-game-status{font-size:clamp(.9rem,2.2vw,1.05rem)}.sheet-level .instruction{font-size:clamp(1.05rem,3vw,1.45rem);min-height:1.2em}}@keyframes sheet-note-pulse{0%,to{filter:drop-shadow(0 0 0 transparent)}50%{filter:drop-shadow(0 0 10px rgba(47,127,214,.35))}}@keyframes sheet-note-pop{0%{transform:scale(1);transform-origin:center}55%{transform:scale(1.18);transform-origin:center}to{transform:scale(1);transform-origin:center}}@keyframes sheet-note-shake{0%,to{transform:translate(0)}30%{transform:translate(-5px)}60%{transform:translate(5px)}}@media (max-width: 520px){.sheet-panel,.sheet-review,.sheet-summary{width:96vw}.sheet-level__main{gap:10px}.sheet-game-status{grid-template-columns:minmax(64px,.8fr) minmax(0,1.7fr) minmax(82px,1fr);gap:6px;font-size:clamp(.82rem,3.4vw,1rem)}.sheet-summary,.sheet-summary__columns{grid-template-columns:1fr}}.free-play{justify-content:center;gap:clamp(28px,7vh,54px);overflow:hidden}.free-play__header{position:relative;z-index:1;width:min(900px,92vw);display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;color:#123868;text-align:center}.free-play__header h1{margin:0;color:#fff;font-size:clamp(2.3rem,7vw,4.2rem);font-weight:900;line-height:1;text-shadow:-3px -3px 0 #123868,3px -3px 0 #123868,-3px 3px 0 #123868,3px 3px 0 #123868,0 7px 0 rgba(47,127,214,.7)}.free-play__header p{margin:8px 0 0;color:#123868;font-size:clamp(1rem,3vw,1.35rem);font-weight:900}.free-play__back{min-height:46px;border:2px solid rgba(255,255,255,.78);border-radius:999px;padding:0 18px;background:#ffffff8f;color:#123868;cursor:pointer;font-family:var(--font);font-size:1rem;font-weight:900;box-shadow:0 8px 18px #1044781f}.free-play__back:active{transform:translateY(2px)}.free-play__piano-zone{position:relative;width:min(900px,92vw);height:min(46vh,380px);isolation:isolate}.free-play__piano-zone:before{content:"";position:absolute;z-index:0;top:-14px;right:-18px;bottom:-18px;left:-18px;border-radius:24px;background:linear-gradient(90deg,#ff4545,#ff9f1c,#ffe14d,#51d96b,#35d6dc,#4386ff,#8f5be8,#ea4daf);opacity:.56;filter:blur(17px);animation:free-play-rainbow-breathe 2.4s ease-in-out infinite alternate}.free-play__piano-zone .piano{z-index:2;width:100%;height:100%}.free-play__note-effects{position:absolute;top:0;right:0;bottom:0;left:0;z-index:1;overflow:visible;pointer-events:none}.free-play-note{position:absolute;left:var(--note-x);top:0;color:var(--particle-color);filter:drop-shadow(0 8px 7px rgba(18,56,104,.2));transform:translate(-50%,12px) scale(.15);transform-origin:center;will-change:transform,opacity;animation:free-play-note-rise var(--particle-duration) cubic-bezier(.18,.72,.22,1) var(--particle-delay) forwards}.free-play-note__symbol{position:relative;display:block;color:var(--particle-color);font-family:Times New Roman,Noto Music,serif;font-size:clamp(2.5rem,6vw,4.3rem);font-weight:900;line-height:1;text-shadow:0 3px 0 rgba(255,255,255,.9),0 0 14px var(--particle-color),0 0 26px var(--particle-accent)}.free-play .key-c{--pressed-accent: #ff9f1c;--pressed-accent-two: #ffd93d}.free-play .key-d{--pressed-accent: #39d5ff;--pressed-accent-two: #8d5cff}.free-play .key-e{--pressed-accent: #8de33f;--pressed-accent-two: #20d8c4}.free-play .key-f{--pressed-accent: #ffd93d;--pressed-accent-two: #ff5f56}.free-play .key-g{--pressed-accent: #4f83ff;--pressed-accent-two: #e04bca}.free-play .key-a{--pressed-accent: #ff7a45;--pressed-accent-two: #8d5cff}.free-play .key-b{--pressed-accent: #32d6d0;--pressed-accent-two: #67d94c}.free-play .piano-key.is-pressed{z-index:3;transform:translateY(4px);background:linear-gradient(150deg,color-mix(in srgb,var(--glow) 21%,#ffffff),color-mix(in srgb,var(--pressed-accent) 23%,#ffffff),color-mix(in srgb,var(--pressed-accent-two) 17%,#ffffff));box-shadow:inset 0 -5px 10px #00000012,-9px 0 26px color-mix(in srgb,var(--glow) 62%,transparent),9px 0 26px color-mix(in srgb,var(--pressed-accent) 62%,transparent)}.free-play .key-c-sharp{--pressed-color: #ef7b2d;--pressed-accent: #ffd93d;--pressed-accent-two: #ff4fa3}.free-play .key-d-sharp{--pressed-color: #36a6c9;--pressed-accent: #4de88b;--pressed-accent-two: #5078ff}.free-play .key-f-sharp{--pressed-color: #d2aa19;--pressed-accent: #89e64a;--pressed-accent-two: #ff8c32}.free-play .key-g-sharp{--pressed-color: #9b4fc0;--pressed-accent: #ff4fa3;--pressed-accent-two: #46d8ff}.free-play .key-a-sharp{--pressed-color: #d94f9c;--pressed-accent: #9f62e8;--pressed-accent-two: #ffd93d}.free-play .black-key.is-pressed{background:linear-gradient(145deg,color-mix(in srgb,var(--pressed-color) 76%,#15151a),color-mix(in srgb,var(--pressed-accent) 58%,#101015),color-mix(in srgb,var(--pressed-accent-two) 52%,#08080b),#050507);box-shadow:0 3px 7px #0000006b,-7px 0 25px color-mix(in srgb,var(--pressed-color) 74%,transparent),8px 0 25px color-mix(in srgb,var(--pressed-accent) 68%,transparent),inset 0 -3px 6px #ffffff1f}@keyframes free-play-note-rise{0%{opacity:0;transform:translate(-50%,12px) rotate(0) scale(.2)}16%{opacity:1;transform:translate(-50%,-36px) rotate(-5deg) scale(var(--particle-pop-scale))}70%{opacity:1}to{opacity:0;transform:translate(calc(-50% + var(--particle-drift)),var(--particle-rise)) rotate(var(--particle-tilt)) scale(var(--particle-scale))}}@keyframes free-play-rainbow-breathe{0%{opacity:.4;transform:scaleX(.98)}to{opacity:.68;transform:scaleX(1.015)}}@media (max-width: 620px){.free-play__header{grid-template-columns:1fr}.free-play__back{justify-self:start}.free-play{gap:clamp(18px,4vh,30px)}}.student-select-card{gap:16px;align-items:stretch;text-align:left;max-width:min(520px,92vw)}.student-select-card .card__title,.student-select-card .card__subtitle{text-align:center}.student-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.student-list__button{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;border:2px solid #d8d3c8;border-radius:14px;background:#fff;font-family:var(--font);cursor:pointer;transition:border-color var(--motion-med) var(--ease)}.student-list__button:hover{border-color:var(--accent-button)}.student-list__label{font-size:clamp(1rem,2.8vw,1.15rem);font-weight:800;color:var(--text)}.student-list__id{font-size:.9rem;font-weight:600;color:var(--text-soft)}.student-empty{margin:0;text-align:center;color:var(--text-soft);font-weight:600}.student-add{display:flex;flex-direction:column;gap:12px;padding-top:8px;border-top:2px solid #efece4}.student-add .big-button{align-self:center}.student-add__field{display:flex;flex-direction:column;gap:8px}.student-add__label{font-size:.95rem;font-weight:700;color:var(--text)}.student-add__input{font-family:var(--font);font-size:1rem;color:var(--text);background:#fff;border:2px solid #d8d3c8;border-radius:14px;padding:12px 14px;outline:none}.student-add__input:focus{border-color:var(--accent-button)}.student-error{margin:0;text-align:center;font-weight:700;color:#b42318}.music-decor{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;overflow:hidden;pointer-events:none}.decor{position:absolute;line-height:1;-webkit-user-select:none;user-select:none;cursor:pointer;pointer-events:auto;display:inline-block;transition:transform .25s cubic-bezier(.34,1.56,.64,1),opacity .25s ease,filter .25s ease,text-shadow .25s ease}.decor:hover{opacity:1!important;transform:scale(1.5) rotate(0)!important;filter:saturate(2) brightness(1.2);text-shadow:0 0 24px currentColor,0 0 48px currentColor;z-index:10}.orientation-gate{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:32px;text-align:center;background:var(--bg);color:var(--text)}.orientation-gate__phone{font-size:clamp(3.5rem,18vw,6rem);line-height:1;animation:orientation-rotate 1.8s var(--ease) infinite}.orientation-gate__title{margin:0;font-size:clamp(1.6rem,7vw,2.4rem);font-weight:800}.orientation-gate__subtitle{margin:0;max-width:22ch;font-size:clamp(1rem,4.5vw,1.4rem);color:var(--text-soft)}@keyframes orientation-rotate{0%,35%{transform:rotate(0)}65%,to{transform:rotate(-90deg)}}:root{--bg: #FCE4EC;--surface: #ffffff;--text: #3a3a40;--text-soft: #6b6b72;--glow-c: #e23b3b;--glow-d: #2f7fd6;--glow-e: #1f7a43;--glow-f: #c47a12;--glow-g: #7d54c7;--glow-a: #c23d79;--glow-b: #237d82;--key-d: #79b8e0;--key-e: #2f9e5a;--key-e-deep: #1f7a43;--accent: #b9a3e3;--accent-button: #79b8e0;--accent-button-deep: #4f97c7;--radius: 28px;--gap: 20px;--ease: cubic-bezier(.4, 0, .2, 1);--motion-slow: .6s;--motion-med: .3s;--font: "Trebuchet MS", "Segoe UI", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-user-select:none;user-select:none;overscroll-behavior:none}@media (prefers-reduced-motion: reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important}}