:root{font-family:Inter,-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:#282b27;background:#f6f4ef;font-synthesis:none;font-weight:400;--paper:#f6f4ef;--white:#fffefa;--ink:#282b27;--muted:#81847b;--line:#e2e2d9;--orange:#ca5834;--sage:#74846c;--radius:20px;font-size:14px}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{cursor:pointer;color:inherit;-webkit-tap-highlight-color:transparent}button:disabled{cursor:default;opacity:.42}button{touch-action:manipulation}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #ca583480;outline-offset:4px}a{color:var(--orange);text-underline-offset:4px}svg{flex-shrink:0}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:600}h1{letter-spacing:-1.8px}button{border:0;background:none}p{line-height:1.8}.app-shell{max-width:1200px;margin:auto;padding:0 54px}.site-header{height:104px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.brand{display:flex;gap:12px;align-items:center;text-align:left;padding:0}.brand>span:last-child{font-size:31px;font-weight:800;letter-spacing:-1.5px;line-height:.95}.brand-dot{color:var(--orange)}.brand small{display:block;font-size:8px;letter-spacing:2.1px;font-weight:600;margin-top:9px}.brand-mark{width:33px;height:34px;display:flex;align-items:center;gap:3px;transform:rotate(-13deg)}.brand-mark i{display:block;width:5px;height:16px;border-radius:2px;background:var(--ink)}.brand-mark i:nth-child(2){height:32px}.brand-mark i:nth-child(3){height:24px;background:var(--orange)}.brand-mark i:nth-child(4){height:12px}.site-header nav{display:flex;background:#ebece5;padding:5px;gap:2px;border-radius:12px}.site-header nav button{padding:10px 18px;display:flex;align-items:center;gap:8px;border-radius:9px;color:#707569;font-size:13px}.site-header nav button.active{background:var(--white);color:var(--ink);box-shadow:0 1px 3px #282b2709}.local-tag{font-size:11px;color:#757b6d;display:flex;align-items:center;gap:8px}.local-tag>span{width:6px;height:6px;border-radius:50%;background:var(--sage)}main{min-height:75vh}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:55px;align-items:center;padding:64px 0 50px}.eyebrow{font-size:10px;letter-spacing:1.7px;font-weight:600;color:#777c70;display:flex;gap:9px;align-items:center;line-height:1.6}.short-line{display:inline-block;width:21px;height:1px;background:var(--orange)}.hero h1{font-size:clamp(38px,4.1vw,52px);line-height:1.43;margin:20px 0 17px;font-weight:550}.accent-word{color:var(--orange)}.hero p{color:#75796e;font-size:13px}.hero-chips{display:flex;gap:17px;margin-top:23px;color:#858a7f;font-size:10px}.hero-chips span{display:flex;align-items:center;gap:6px}.rhythm-art{padding:24px 27px 21px;transform:rotate(-3deg);background:#e8eade;border:1px solid #dce0d1;position:relative;max-width:430px}.rhythm-art:after{content:"";position:absolute;inset:10px -11px -11px 10px;z-index:-1;border:1px solid #dfe0d5}.art-title{font-size:8px;letter-spacing:1.3px;display:flex;justify-content:space-between;border-bottom:1px solid #cdd2c4;padding-bottom:16px;color:#798171}.art-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:12px;margin:24px 0}.art-grid span{border:1px solid #cad0bf;aspect-ratio:1;border-radius:50%;font-size:26px;text-align:center;display:flex;justify-content:center;align-items:center;color:#e8eade}.art-grid .ink{background:#3f4c3a;border-color:#3f4c3a}.art-grid .n1{background:var(--orange);border-color:var(--orange)}.art-grid .n2{background:none;color:#3f4c3a;border-width:2px}.art-label{font-size:8px;color:#7f8675;letter-spacing:1.1px;display:flex;gap:14px;align-items:center}.art-label i{height:1px;background:#cdd2c4;flex:1}.practice-layout{display:grid;grid-template-columns:1.55fr 1fr;gap:24px}.practice-card,.answer-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px}.section-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:25px}.section-top h2{margin-top:7px}.section-top>h2{margin:0}h2{font-size:21px;letter-spacing:-.4px;line-height:1.4}.quiet-pill{font-size:10px;padding:7px 10px;border:1px solid var(--line);border-radius:6px;color:#72796b;white-space:nowrap}.grade-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:20px 0}.grade-tabs button{border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;padding:17px 14px;align-items:start;gap:8px;text-align:left;transition:background .18s,border-color .18s}.grade-tabs button>span{font-size:8px;letter-spacing:1.5px;color:#82877b}.grade-tabs strong{font-size:32px;font-weight:500;letter-spacing:-1.4px}.grade-tabs small{font-size:11px;color:#82877b}.grade-tabs button.selected{background:#eef0e7;border-color:#909b83;box-shadow:inset 0 0 0 1px #909b8335}.grade-tabs button.selected strong{color:#546548}.task-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:22px}.task-tabs button{display:flex;align-items:center;gap:10px;padding:13px 10px;border:1px solid transparent;border-radius:10px;text-align:left}.task-tabs button.selected{background:#f6f4ef;border-color:#e9e3d9}.task-tabs button>span{flex:1;font-weight:550;font-size:12px}.task-tabs small{display:block;font-size:10px;color:#8d8d81;margin-top:6px;font-weight:400}.task-tabs svg{color:#7e8273}.practice-meta{margin:24px 0 17px;display:flex;justify-content:space-between;gap:10px;font-size:11px;color:#848879}.button{min-height:48px;border-radius:10px;padding:13px 20px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:13px;font-weight:550;transition:background .15s,transform .15s}.button:active:not(:disabled){transform:translateY(1px)}.primary{background:var(--ink);color:#fffdf4}.primary:hover:not(:disabled){background:#42483d}.secondary{background:transparent;border:1px solid #d9dbd0}.secondary:hover:not(:disabled){background:#eeeee6}.start-button{width:100%;justify-content:start}.start-button svg:last-child{margin-left:auto}.approach-card{padding:29px 31px;background:#eceee4;border-radius:20px;display:flex;flex-direction:column;border:1px solid #e2e5d8}.approach-card>.eyebrow{font-size:8px;letter-spacing:1.6px}.approach-card>h2{font-size:31px;line-height:1.5;font-weight:500;margin:20px 0 25px;color:#4d5a45}.approach-card ol{list-style:none;padding:0;margin:0}.approach-card li{display:flex;gap:15px;font-size:13px;margin-bottom:20px}.approach-card li>span{font-size:10px;color:#8b9580;padding-top:3px}.approach-card li p{font-size:11px;color:#858d7c;margin-top:5px}.approach-note{display:flex;align-items:center;gap:14px;border-top:1px solid #dce0d1;padding-top:19px;margin-top:auto;color:#7b856e;font-size:11px}.focus-section{margin-top:46px}.section-description{font-size:11px;color:#8a8e82}.focus-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.focus-card{position:relative;display:flex;gap:18px;align-items:start;padding:25px 22px;border:1px solid var(--line);border-radius:14px;text-align:left;background:#faf9f5;min-height:134px;transition:background .18s,border-color .18s}.focus-card:hover{background:#fffefa;border-color:#aaafa0}.focus-number{font-size:10px;color:#9da28f;padding-top:4px;letter-spacing:1px}.focus-card h3{font-size:15px}.focus-english{font-size:9px;letter-spacing:.6px;color:#939789;display:block;margin:5px 0 12px}.focus-card p{font-size:11px;color:#838778}.focus-card>svg{margin-left:auto;align-self:center;color:#909683}.focus-card.featured{background:#f1e9df;border-color:#e7d5c5}.focus-card.featured h3{color:#a65436}.recommended{position:absolute;right:17px;top:16px;font-size:9px;color:#a87055}.home-footer{display:flex;align-items:center;gap:9px;font-size:10px;color:#8c9281;margin:30px 0 50px}.home-footer button{margin-left:auto;display:flex;align-items:center;gap:3px;font-size:11px}.site-footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;padding:25px 0 32px;align-items:center}.site-footer>span:first-child{font-weight:750;font-size:18px;letter-spacing:-.8px}.site-footer>span:first-child>span{font-size:10px;font-weight:400;letter-spacing:1px;color:#979b8f;margin-left:13px}.site-footer>span:last-child{font-size:8px;letter-spacing:1.7px;color:#9ba08e}.resume-card{display:flex;align-items:center;justify-content:space-between;width:100%;padding:17px 20px;background:#e8ecdf;color:#5e6f50;border:1px solid #d8dece;border-radius:12px;margin-bottom:20px;font-size:12px}.resume-card>span{display:flex;align-items:center;gap:12px}.exercise-page{max-width:880px;margin:auto;padding-bottom:45px}.exercise-heading{display:flex;align-items:center;justify-content:space-between;margin-top:30px;font-size:11px;color:#89907e;gap:10px}.back-button{display:flex;align-items:center;gap:8px;font-size:12px;min-height:44px;padding:0}.dot-separator{padding:0 8px}.exercise-title{display:flex;align-items:center;justify-content:space-between;margin:30px 0 28px}.exercise-title h1{font-size:35px;margin-top:12px;letter-spacing:-.9px}.exercise-number{font-size:40px;font-weight:450;color:#929b86;letter-spacing:-1px}.exercise-number small{font-size:12px;letter-spacing:0}.steps{display:flex;align-items:center;gap:13px;font-size:11px;color:#a4a998;margin:0 0 28px}.steps span{white-space:nowrap}.steps i{height:1px;flex:1;background:#e0e3d6}.steps .current{color:var(--orange);font-weight:600}.steps .done{color:#6f8162}.listen-card{min-height:410px;display:flex;flex-direction:column;align-items:center;text-align:center;border:1px solid var(--line);background:var(--white);border-radius:20px;padding:37px 22px}.listen-symbol{height:120px;display:flex;align-items:center;font-size:70px;font-weight:400;color:#77866a}.listen-card h2{font-size:24px;font-weight:500}.listen-card p{font-size:12px;margin-top:10px;color:#909582}.beat-dots{display:flex;gap:13px;margin:30px 0}.beat-dots i{height:9px;width:9px;border-radius:50%;background:#e1e5d7;transition:background .1s}.beat-dots i.lit{background:var(--orange);box-shadow:0 0 0 5px #ca583410}.listen-card .button{min-height:42px;font-size:11px}.answer-card{margin-bottom:20px}.answer-card .helper{margin-top:-10px;margin-bottom:20px}.helper{font-size:11px;line-height:1.9;color:#8c9281}.edit-tools{display:flex;align-items:center;gap:12px;font-size:12px;color:#818775}.icon-button{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:9px;background:#fafbf6}.edit-tools .icon-button{border:0;background:none}.bar+.bar{margin-top:23px}.bar-heading{display:flex;justify-content:space-between;font-size:9px;text-transform:uppercase;letter-spacing:1px;color:#8f9782;margin-bottom:8px}.beat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.beat-group{min-width:0}.grid-line{display:grid;gap:4px;align-items:center;margin-bottom:5px}.beat-group:not(:first-child) .voice-label{display:none}.beat-group:not(:first-child) .grid-line{grid-template-columns:repeat(var(--cells,2),minmax(0,1fr))!important}.beat-group:not(:first-child) .ruler>span:first-child{display:none}.grid-line.ruler{color:#8f9684;font-size:10px;text-align:center;margin-bottom:9px}.voice-label{font-size:10px;white-space:nowrap}.voice-label b{display:block;font-weight:500}.voice-label small{font-size:8px;color:#939a88;display:block;margin-top:3px}.cell-wrap{min-width:0}.cell{height:44px;min-width:0;width:100%;border-radius:7px;border:1px solid #e4e6dc;background:#f5f6f0;font-size:23px;color:#b3b9a8;display:flex;align-items:center;justify-content:center;position:relative;transition:background .1s,border-color .1s}.empty-dot{font-size:20px;color:#c6ccba}.cell.filled{background:#747f6a;border-color:#747f6a;color:#fff}.cell.filled.kick{background:#444c3e;border-color:#444c3e;font-size:17px}.cell.filled.snare{background:#87907c;border-color:#87907c;font-size:17px}.cell.filled.crash{background:#9c8969;border-color:#9c8969}.cell.filled.open-hat{background:#f1e6d9;border-color:#b48660;color:#aa7149;font-size:29px}.cell:hover:not(:disabled){border-color:#778469}.cell:disabled{opacity:1;cursor:default}.cell.matched{border-color:#729961}.cell.missed,.cell.extra{background:#f4dacf;color:#b35b3d;border:1px dashed #cb8b70}.cell.confused{background:#f4e7c5;border:1px dashed #ba9651;color:#94722a}.cell.playhead{box-shadow:0 0 0 2px var(--orange);z-index:1;transform:translateY(-1px)}.cell.playhead:not(.filled){background:#f6dfd4}.tiny-check{position:absolute;right:2px;bottom:2px}.grid-legend{display:flex;gap:15px;flex-wrap:wrap;font-size:10px;color:#8b9280;margin-top:16px}.muted{color:#a0a694}.division-control{display:flex;align-items:center;justify-content:space-between;font-size:9px;gap:4px;margin-bottom:12px;min-height:29px;color:#818a74}.division-control button{background:#eef0e6;border-radius:5px;padding:6px;font-size:10px;display:flex;gap:8px}.division-control button:disabled{opacity:1}.hand-cell{height:28px;display:block;width:100%;font-size:10px;color:#797f6f}.hand-cell:disabled{opacity:1}.hidden-notes{font-size:9px;color:#a56647;line-height:1.6;margin-top:8px;padding:4px 0}.answer-actions{display:grid;grid-template-columns:1.4fr 1fr;gap:10px;margin-top:30px}.answer-secondary{display:flex;justify-content:space-between;align-items:center;margin-top:14px}.answer-secondary button{display:flex;align-items:center;gap:7px;min-height:44px;font-size:11px;color:#878d7d}.answer-secondary button:last-child{color:var(--orange)}.feedback{padding:15px;border:1px solid #e6ddc9;background:#f5f0e4;color:#8d7957;display:flex;align-items:center;gap:10px;font-size:12px;line-height:1.8;border-radius:9px;margin-top:22px}.feedback.positive{background:#eef3e6;border-color:#dce5ce;color:#657c51}.exercise-bottom{display:flex;gap:20px;justify-content:space-between;align-items:center;margin:22px 0}.tempo-control{display:flex;gap:18px;align-items:center}.tempo-control small{display:block;font-size:9px;color:#9aa18e}.tempo-control strong{font-weight:500;font-size:24px}.tempo-control strong>span{font-size:9px;margin-left:6px;color:#999f8e}.tempo-buttons{display:flex;align-items:center;gap:6px}.tempo-buttons .icon-button{width:36px;height:36px;background:transparent}.reset-tempo{display:flex;align-items:center;gap:4px;font-size:9px;color:#87917a;min-height:40px}.listen-count{display:flex;align-items:center;gap:7px;font-size:10px;color:#8d957f;flex-wrap:wrap}.compact{min-height:40px;padding:10px 14px;font-size:11px}.result-summary{display:flex;gap:17px;margin:35px 0 27px;align-items:center}.result-summary h2{font-size:22px;font-weight:500}.result-summary p{font-size:12px;color:#8b937d;margin-top:8px}.result-icon{width:57px;height:57px;background:#e7ecdc;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#728560;flex-shrink:0}.original{border-color:#cfd8c1}.diff-legend{display:flex;flex-wrap:wrap;gap:15px;font-size:10px;margin-top:17px}.legend-match{color:#688554}.legend-miss{color:#b77559}.legend-confuse{color:#ad8a44}.differences{margin:35px 0}.differences>h2{font-size:18px;margin-bottom:17px}.diff-list{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#f9faf4}.diff-item{padding:17px 20px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line)}.diff-item:last-child{border:0}.diff-item strong{font-size:12px;font-weight:550}.diff-item p{font-size:11px;color:#8b917e;margin-top:6px}.diff-symbol{font-size:23px;color:#ad775a;width:22px;text-align:center}.diff-item.partial{background:#edf1e3;color:#6f855b}.diff-item.partial p{color:#7f8b71}.all-correct{display:flex;align-items:center;gap:10px;font-size:13px;color:#6c8358;padding:15px 0}.result-actions{display:grid;grid-template-columns:1fr 1.2fr;gap:13px}.text-button{font-size:11px;color:#7a8a69;min-height:44px;padding-left:0}.sticking-note{border-left:2px solid #adba9d;padding:9px 14px;background:#f3f5ec;font-size:11px;color:#7b8a6d;line-height:1.9;margin-bottom:23px}.sticking-result{padding:17px 0;border-top:1px solid var(--line);margin-top:20px}.sticking-result h3{font-size:13px;margin-bottom:8px}.sticking-result p{font-size:12px;color:#838b76}.secondary-page{max-width:830px;margin:55px auto}.secondary-page>h1{font-size:37px;margin-top:16px;font-weight:500}.page-intro{color:#879079;margin:17px 0 35px;font-size:13px}.journal-overview{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);background:#edeee4;border-radius:16px;padding:24px;margin-bottom:25px}.journal-overview>div{padding:0 20px;border-right:1px solid #dadecf}.journal-overview>div:first-child{padding-left:0}.journal-overview>div:last-child{border:0}.journal-overview span{font-size:11px;color:#879178;display:block}.journal-overview strong{font-size:33px;font-weight:450;display:block;margin-top:15px}.journal-overview strong small{font-size:11px;color:#8d987b}.tag-bars{padding:12px 0}.tag-bars>div{display:grid;grid-template-columns:160px 1fr 25px;align-items:center;gap:15px;margin:19px 0;font-size:12px;color:#7b856d}.tag-bars b{font-weight:500;text-align:right;color:#69785a}.tag-track{height:6px;background:#eef0e6;border-radius:8px}.tag-track i{height:100%;background:#9eab8b;display:block;border-radius:8px}.recent-list{margin-top:40px}.recent-list>h2{font-size:19px;margin-bottom:12px}.journal-row{display:flex;align-items:center;gap:17px;padding:20px 0;border-bottom:1px solid var(--line)}.journal-icon{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid #dfe3d3;border-radius:10px;color:#899878}.journal-row h3{font-size:13px;font-weight:500}.journal-row p{font-size:10px;color:#959d88;margin-top:6px}.outcome{margin-left:auto;font-size:10px;white-space:nowrap;color:#a6805f}.outcome.correct{color:#728a5f}.settings-page>.answer-card>p:not(.helper){font-size:12px;color:#808a72;margin:15px 0 20px}.settings-page .helper{margin:0 0 20px}.sound-packs{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin:20px 0}.sound-pack{border:1px solid var(--line);border-radius:12px;padding:16px}.sound-pack.selected{border-color:#93a57d;background:#f4f6ed}.pack-choice{display:flex;align-items:center;justify-content:space-between;text-align:left;width:100%;padding:0;color:#6c7e59;min-height:44px}.pack-choice strong{font-size:13px;font-weight:550}.pack-choice small{font-size:10px;display:block;margin-top:7px;color:#899579}.radio-dot{width:16px;height:16px;border-radius:50%;border:1px solid #cbd4bc}.sample-buttons{display:flex;flex-wrap:wrap;gap:5px;margin-top:16px}.sample-buttons button{padding:8px;min-height:36px;border-radius:6px;border:1px solid #e0e5d6;font-size:10px;display:flex;gap:5px;align-items:center;color:#7a896a}.setting-row{display:flex;gap:20px;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding:23px 0 7px;margin-top:15px}.setting-row strong{font-size:12px;font-weight:550;display:block}.setting-row small{font-size:10px;color:#8b947e;display:block;margin-top:8px;line-height:1.8}.setting-row input{appearance:none;width:40px;min-width:40px;height:24px;border-radius:20px;background:#dde1d2;position:relative;cursor:pointer;margin:0}.setting-row input:before{content:"";position:absolute;width:18px;height:18px;border-radius:50%;background:#fffefa;left:3px;top:3px;transition:transform .15s}.setting-row input:checked{background:#7c9167}.setting-row input:checked:before{transform:translate(16px)}.select-row{display:flex;gap:20px;margin:22px 0}.select-row label{font-size:11px;color:#8a957c;flex:1}.select-row select{width:100%;display:block;padding:12px;margin-top:8px;background:#f5f6ee;color:#59694b;border:1px solid #dfe5d5;border-radius:7px}.backup-buttons{display:flex;gap:12px}.backup-buttons .button{font-size:12px}.offline-status{font-size:12px;color:#81906c;display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:20px 0}.offline-status small{flex-basis:100%;font-size:10px;color:#9da88e;padding-left:14px}.status-dot{width:6px;height:6px;display:inline-block;background:#aaa995;border-radius:50%}.status-dot.ready{background:#7d925f}.about-details{font-size:11px;color:#8d9980;margin:27px 0}.about-details summary{cursor:pointer;min-height:44px;padding:14px 0}.about-details p{margin:12px 0;line-height:1.9}.about-details a{display:inline-block;margin:10px 20px 0 0;font-size:10px}.empty-state{text-align:center;padding:75px 25px;color:#849477;display:flex;align-items:center;flex-direction:column;gap:19px}.empty-state h2{font-size:23px}.empty-state.small{padding:35px 10px;gap:12px}.empty-state.small h3{font-size:15px;font-weight:500}.empty-state p{font-size:11px;color:#a0a993}.alert{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:20px 0;padding:15px 17px;border:1px solid #e7c2aa;border-radius:10px;background:#faf0e8;color:#ab6646;font-size:12px;line-height:1.8}.alert button{flex-shrink:0;min-height:40px}.toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%);background:#30382bef;color:#f4f5ed;max-width:90vw;width:max-content;padding:15px 24px;border-radius:12px;font-size:12px;z-index:50;box-shadow:0 8px 30px #29372320;line-height:1.7}.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.loading-page{display:flex;align-items:center;justify-content:center;gap:15px;min-height:50vh;color:#8a9b7a;font-size:13px}.spin{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.fatal{padding:70px 30px;text-align:center}.fatal p{margin:20px}.fatal button{padding:15px;background:#303d27;color:#fff;border-radius:10px}@media(min-width:761px){.beat-grid:has(.division-control){grid-template-columns:repeat(2,minmax(0,1fr))}.beat-group:has(.division-control) .voice-label{display:block}.beat-group:has(.division-control) .grid-line{grid-template-columns:52px repeat(var(--cells,4),minmax(0,1fr))!important}.beat-group:has(.division-control) .ruler>span:first-child{display:block}}@media(max-width:1000px){.app-shell{padding:0 30px}.hero{gap:35px}.art-grid{gap:8px}.practice-card{padding:23px}.approach-card{padding:26px}.task-tabs{grid-template-columns:1fr}.task-tabs button{padding:12px}.practice-meta{font-size:10px}.approach-card>h2{margin:27px 0}.approach-card li{margin-bottom:27px}.beat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.beat-group:nth-child(3) .voice-label{display:block}.beat-group:nth-child(3) .grid-line{grid-template-columns:52px repeat(var(--cells,2),minmax(0,1fr))!important}.beat-group:nth-child(3) .ruler>span:first-child{display:block}.beat-group:nth-child(odd){min-width:0}}@media(max-width:760px){.app-shell{padding:0 22px}.site-header{height:87px;gap:15px}.brand>span:last-child{font-size:28px}.brand small{font-size:7px}.brand-mark{width:26px;gap:3px}.brand-mark i{width:4px}.site-header nav{padding:4px;gap:0}.site-header nav button{padding:10px 12px;font-size:12px;gap:5px}.site-header nav svg{width:15px}.local-tag{display:none}.hero{padding:37px 0 32px;gap:10px;grid-template-columns:1fr}.hero h1{font-size:41px;line-height:1.42;letter-spacing:-1.5px;margin:16px 0}.hero .eyebrow{font-size:8px;letter-spacing:1.4px}.hero p{font-size:12px;max-width:270px}.hero-chips{font-size:9px;margin-top:19px;gap:13px}.rhythm-art{display:none}.practice-layout{grid-template-columns:1fr;gap:20px}.practice-card{padding:23px 20px}.section-top{margin-bottom:23px}.section-top h2{font-size:20px}.eyebrow{font-size:9px;letter-spacing:1.5px}.quiet-pill{font-size:9px;padding:6px 8px}.grade-tabs{gap:8px;margin:17px 0}.grade-tabs button{padding:14px 12px;gap:7px}.grade-tabs strong{font-size:30px}.grade-tabs small{font-size:10px}.task-tabs{grid-template-columns:1fr;margin-top:20px;gap:4px}.task-tabs button{padding:13px 10px}.task-tabs button>span{font-size:13px}.task-tabs small{font-size:10px;margin-top:5px}.practice-meta{font-size:10px;margin:20px 0 16px}.button{min-height:48px;font-size:12px}.approach-card{padding:23px 22px}.approach-card>.eyebrow{font-size:8px}.approach-card>h2{font-size:22px;margin:13px 0 20px;line-height:1.5}.approach-card>h2 br{display:none}.approach-card ol{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.approach-card li{display:block;font-size:11px;margin:0}.approach-card li>span{font-size:9px;display:block;margin-bottom:9px}.approach-card li p{font-size:9px;line-height:1.8;margin-top:6px}.approach-note{padding-top:17px;margin-top:20px;font-size:10px}.approach-note br{display:none}.focus-section{margin-top:35px}.section-description{display:none}.focus-grid{grid-template-columns:1fr;gap:10px}.focus-card{padding:20px;gap:15px;min-height:120px}.focus-card h3{font-size:14px}.focus-card p{font-size:10px}.focus-english{margin:5px 0 10px}.focus-number{font-size:9px}.recommended{font-size:8px;right:17px;top:18px}.home-footer{flex-wrap:wrap;justify-content:center;margin:25px 0 30px;font-size:9px;gap:7px}.home-footer button{flex-basis:100%;justify-content:center;margin:8px auto 0;min-height:38px}.site-footer{padding:22px 0 calc(24px + env(safe-area-inset-bottom));margin-top:0}.site-footer>span:last-child{font-size:7px;letter-spacing:1px}.site-footer>span:first-child>span{font-size:9px;margin-left:8px}.exercise-page{padding-bottom:25px}.exercise-heading{margin-top:17px;font-size:9px;gap:8px}.back-button{font-size:11px}.exercise-title{margin:19px 0 24px}.exercise-title h1{font-size:27px;letter-spacing:-.9px}.exercise-number{font-size:32px}.exercise-number small{font-size:10px}.steps{gap:10px;font-size:10px;margin-bottom:24px}.answer-card{padding:22px 17px;border-radius:16px}.answer-card .section-top{margin-bottom:20px}.answer-card .section-top h2{font-size:18px}.answer-card .helper{font-size:10px;line-height:1.9}.edit-tools{gap:6px;font-size:11px}.edit-tools .icon-button{width:32px;height:40px}.beat-grid{grid-template-columns:1fr;gap:15px}.beat-group{padding-bottom:6px}.beat-group .voice-label{display:block!important}.beat-group .grid-line{grid-template-columns:52px repeat(var(--cells,2),minmax(0,1fr))!important}.beat-group .ruler>span:first-child{display:block!important}.grid-line{gap:6px;margin-bottom:6px}.grid-line.ruler{font-size:10px;margin-bottom:8px}.cell{height:44px;border-radius:7px}.voice-label{font-size:10px}.voice-label small{font-size:8px}.grid-legend{font-size:9px;gap:12px;line-height:1.8}.grid-legend .muted{flex-basis:100%}.bar-heading{font-size:9px;margin-bottom:16px}.bar+.bar{margin-top:25px;padding-top:20px;border-top:1px solid var(--line)}.answer-actions{grid-template-columns:1fr;gap:10px;margin-top:25px}.answer-secondary{margin-top:12px;font-size:10px}.exercise-bottom{flex-direction:column;align-items:stretch;gap:16px;margin-top:20px}.tempo-control{justify-content:space-between}.tempo-control strong{font-size:24px}.tempo-buttons{gap:7px}.reset-tempo{font-size:9px;padding-right:0}.listen-count{justify-content:center;font-size:9px}.listen-card{min-height:410px;padding:30px 18px}.listen-card h2{font-size:22px}.listen-card p{font-size:11px}.listen-symbol{height:125px}.result-summary{align-items:start;gap:12px;margin:26px 0}.result-summary h2{font-size:19px;line-height:1.55}.result-summary p{font-size:10px;line-height:1.9}.result-icon{height:40px;width:40px}.result-icon svg{width:22px}.compact{font-size:10px;padding:9px 10px;gap:6px;min-height:40px}.differences>h2{font-size:17px}.diff-item{padding:16px 13px;gap:12px}.diff-item strong{font-size:11px;line-height:1.9}.diff-item p{font-size:10px}.diff-legend{font-size:9px;gap:10px}.result-actions{grid-template-columns:1fr 1fr;gap:9px}.result-actions .button{padding:13px 10px;font-size:11px}.secondary-page{margin:35px auto}.secondary-page>h1{font-size:29px}.page-intro{font-size:11px;line-height:1.9;margin:13px 0 27px}.journal-overview{padding:19px 14px;border-radius:14px}.journal-overview>div{padding:0 11px}.journal-overview span{font-size:9px;white-space:nowrap}.journal-overview strong{font-size:28px}.journal-overview strong small{font-size:9px}.tag-bars>div{grid-template-columns:120px 1fr 18px;gap:8px;font-size:10px}.journal-row{gap:10px;padding:18px 0}.journal-icon{height:35px;width:35px}.journal-icon svg{width:18px}.journal-row h3{font-size:11px}.journal-row p{font-size:9px;line-height:1.8;max-width:195px}.outcome{font-size:9px}.sound-packs{grid-template-columns:1fr}.sample-buttons{gap:7px}.sample-buttons button{font-size:10px;min-height:40px;padding:9px}.setting-row{gap:13px}.setting-row small{font-size:10px;line-height:1.8}.select-row{gap:12px}.backup-buttons{gap:9px}.backup-buttons .button{font-size:11px;padding:11px 13px}.toast{bottom:20px;padding:13px 17px;font-size:11px}.sticking-note{font-size:10px;padding:10px}.division-control{font-size:10px}.division-control button{min-height:36px;padding:8px 12px}.hand-cell{min-height:36px}.alert{font-size:11px;padding:12px}.resume-card{font-size:11px;padding:15px}.grid-caption{font-size:10px}.readonly .beat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.readonly .beat-group .grid-line{grid-template-columns:32px repeat(var(--cells,2),minmax(0,1fr))!important}.readonly .voice-label b{font-size:8px}.readonly .voice-label small{font-size:6px}.readonly .cell{height:30px;font-size:18px}.readonly .cell.filled.kick,.readonly .cell.filled.snare{font-size:12px}.readonly .cell.open-hat{font-size:21px}.readonly .grid-line{gap:3px;margin-bottom:4px}.readonly .division-control{font-size:8px;gap:4px;min-height:25px}.readonly .division-control button{padding:4px;font-size:8px;min-height:25px;gap:2px}.readonly .hand-cell{font-size:8px;min-height:24px;height:24px}}@media(max-width:370px){.app-shell{padding:0 15px}.site-header nav button{padding:10px}.site-header nav svg{display:none}.hero h1{font-size:36px}.quiet-pill{font-size:8px}.practice-card{padding:20px 16px}.readonly .beat-grid{grid-template-columns:1fr}.readonly .cell{height:36px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media(max-width:760px)and (min-width:371px){.drum-grid:not(.dense).editable .beat-grid{grid-template-columns:calc(50% + 26px) 1fr;gap:13px 10px}.drum-grid:not(.dense).editable .beat-group:nth-child(2n) .voice-label{display:none!important}.drum-grid:not(.dense).editable .beat-group:nth-child(2n) .grid-line{grid-template-columns:repeat(2,minmax(0,1fr))!important}.drum-grid:not(.dense).editable .beat-group:nth-child(2n) .ruler>span:first-child{display:none!important}}.answer-mode{display:flex;align-items:center;gap:4px;margin:0 0 24px;width:max-content;background:#ebece4;border-radius:9px;padding:4px}.answer-mode>span{font-size:10px;color:#939984;padding:0 10px}.answer-mode button{min-height:36px;padding:8px 15px;border-radius:7px;font-size:11px;color:#8d957e}.answer-mode button.active{background:var(--white);color:#576847;box-shadow:0 1px 3px #26341c08}.staff-instruction{font-size:11px;color:#879477;line-height:1.9;margin:0 0 15px}.staff-instruction span{display:block;font-size:10px;color:#a0a98e}.staff-bar{margin-bottom:20px;min-width:0}.staff-scroll{overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin;border:1px solid #e6e8df;border-radius:10px;background:#fffefa}.staff-svg{width:max-content;min-width:100%;height:170px}.staff-svg svg{display:block}.staff-tools{border:1px solid #e0e4d4;background:#f6f7f0;border-radius:12px;padding:18px;margin:20px 0}.staff-cursor{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.staff-cursor strong{font-size:11px;font-weight:500;color:#7c8b68}.score-bar-select{display:flex;gap:8px;margin-bottom:14px}.score-bar-select button{min-height:40px;padding:8px 15px;border-radius:7px;font-size:10px;color:#8b9877;border:1px solid #dfe5d3}.score-beats,.score-slots{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:10px}.score-beats button,.score-slots button{min-height:44px;border-radius:7px;font-size:12px;background:#edf0e5;color:#8a9976}.score-slots{display:flex}.score-slots button{flex:1}.score-beats button.active,.score-slots button.active,.score-bar-select button.active{background:#dfe7d3;color:#5c7543;border-color:#9db688}.score-voices{display:flex;gap:8px;flex-wrap:wrap;padding-top:13px;border-top:1px solid #e0e6d5}.score-voices button{min-height:60px;min-width:65px;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;border:1px solid #d9e1cc;border-radius:8px;font-size:18px;color:#869772;background:#f9faf5}.score-voices button span{font-size:10px;white-space:nowrap}.score-voices button.active{background:#778967;color:#fffefa;border-color:#778967}.score-voices button:last-child{font-size:11px;min-width:75px}.score-key{display:flex;flex-wrap:wrap;gap:13px;color:#8e9a7e;font-size:10px;margin:15px 0 5px}.score-hands{display:flex;align-items:center;gap:10px;padding-top:16px;font-size:11px;color:#8d9b7b}.score-hands button{padding:10px 13px;min-height:44px;border:1px solid #d8e0cd;border-radius:6px}.score-hands button.active{background:#e0e8d3;color:#637f49}.score-hand-list{display:flex;gap:12px;flex-wrap:wrap;font-size:10px;color:#8e9c7b}.notation-error{color:#b47557;font-size:11px;margin-bottom:12px}@media(max-width:760px){.answer-mode{margin-bottom:24px}.answer-mode button{min-height:40px;font-size:11px}.staff-tools{padding:14px}.staff-cursor strong{font-size:10px}.score-beats,.score-slots,.score-voices{gap:6px}.score-voices button{min-width:60px;font-size:17px}.score-voices button span{font-size:9px}.staff-instruction{font-size:10px}}.audio-help{padding:0 4px 24px;color:var(--muted);font-size:13px;line-height:1.7}.audio-help summary{cursor:pointer;font-weight:600;padding:10px 0}.audio-help audio{width:min(100%,360px);display:block;margin:12px 0}.session-count{display:flex;align-items:baseline;gap:5px;margin:14px 0;color:var(--muted);font-size:13px}.session-count strong{color:var(--ink);font-size:19px}.session-count span{margin-left:auto;font-size:11px}.next-question{width:100%;margin-top:16px}.session-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:8px;z-index:5;padding:4px 12px;margin:16px 0;border:1px solid var(--line);border-radius:12px;background:#f6f4eff5;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}