.nr305{max-width:1120px}.nr305-hero{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:end;margin:28px 0 18px}.nr305-hero h1{margin:5px 0 8px;font-size:clamp(2rem,5vw,3.4rem);letter-spacing:-.045em}.nr305-hero p{max-width:760px;margin:0;color:var(--muted,#667085);font-size:1.02rem}.nr305-hero-badge{min-width:180px;padding:14px 16px;border:1px solid var(--border,#e5e7eb);border-radius:18px;background:#fff;box-shadow:0 12px 36px rgba(16,24,40,.06)}.nr305-hero-badge strong,.nr305-hero-badge span{display:block}.nr305-hero-badge span{margin-top:3px;color:#667085;font-size:.86rem}.nr305-game{padding:18px;overflow:visible}.nr305-scrollrow{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.nr305-scrollrow button,.nr305-more summary{appearance:none;border:1px solid #d0d5dd;background:#fff;color:#344054;border-radius:999px;padding:8px 12px;font:inherit;font-weight:700;cursor:pointer;white-space:nowrap}.nr305-scrollrow button.active,.nr305-more button.active{background:#101828;color:#fff;border-color:#101828}.nr305-scrollrow button:focus-visible,.nr305-more summary:focus-visible{outline:3px solid #84adff;outline-offset:2px}.nr305-drills,.nr305-clefs{margin-top:9px}.nr305-label{font-size:.78rem;font-weight:800;color:#667085;text-transform:uppercase;letter-spacing:.06em;margin-right:2px}.nr305-more{position:relative}.nr305-more summary{list-style:none}.nr305-more summary::-webkit-details-marker{display:none}.nr305-more>div{position:absolute;z-index:12;top:42px;left:0;min-width:210px;padding:8px;display:grid;gap:6px;background:#fff;border:1px solid #d0d5dd;border-radius:14px;box-shadow:0 16px 40px rgba(16,24,40,.14)}.nr305-more>div button{width:100%;text-align:left;border-radius:10px}.nr305-metrics{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:14px 0 12px}.nr305-metrics>div{min-width:0;padding:10px 12px;border:1px solid #e4e7ec;background:#f9fafb;border-radius:14px}.nr305-metrics small,.nr305-metrics strong{display:block}.nr305-metrics small{font-size:.72rem;color:#667085;text-transform:uppercase;letter-spacing:.05em}.nr305-metrics strong{font-size:1.08rem;margin-top:2px;overflow:hidden;text-overflow:ellipsis}.nr305-board{border:1px solid #e4e7ec;border-radius:20px;background:linear-gradient(180deg,#fff,#fcfcfd);padding:14px}.nr305-staffcard{border:1px solid #eaecf0;border-radius:16px;padding:10px 12px;background:#fff}.nr305-promptline{display:flex;justify-content:space-between;align-items:center;gap:12px}.nr305-promptline span{color:#667085;font-size:.85rem}.nr305-staff{height:190px;display:flex;align-items:center;justify-content:center;overflow:hidden}.nr305-staff svg{display:block;width:min(100%,650px);height:190px}.nr305-staff .staff-line,.nr305-staff .ledger{stroke:#101828;stroke-width:2}.nr305-staff .note-head{fill:#101828}.nr305-staff .stem{stroke:#101828;stroke-width:3}.nr305-staff .clef{font-family:serif;font-size:72px;fill:#101828}.nr305-staff .c-clef{font-family:serif;font-size:62px;fill:#101828}.nr305-staff .key-sig,.nr305-staff .acc{font-family:serif;font-size:26px;fill:#101828}.nr305-staff .phrase-index{font:700 12px system-ui;fill:#667085}.nr305-piano-wrap{overflow-x:auto;overflow-y:hidden;margin-top:12px;padding:8px 0 2px;scrollbar-width:thin}.nr305-piano{position:relative;height:134px;min-width:max-content}.nr305-piano-inner{height:128px;position:relative}.nr305-key{position:absolute;top:0;padding:0;border:1px solid #475467;cursor:pointer}.nr305-key.white{height:126px;background:#fff;border-radius:0 0 6px 6px;z-index:1}.nr305-key.black{height:78px;width:22px;background:#101828;border-color:#101828;border-radius:0 0 5px 5px;z-index:2;color:#fff}.nr305-key span{position:absolute;bottom:5px;left:0;right:0;text-align:center;font-size:.68rem;font-weight:800}.nr305-key.correct-key{outline:4px solid #12b76a;outline-offset:-4px}.nr305-key.cursor-key{box-shadow:inset 0 0 0 4px #84adff}.nr305-names{display:grid;grid-template-columns:repeat(7,1fr);gap:7px;margin-top:12px}.nr305-names button{min-height:58px;border:1px solid #d0d5dd;border-radius:13px;background:#fff;font-size:1.15rem;font-weight:850;cursor:pointer}.nr305-feedback{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:48px;margin-top:9px}.nr305-feedback p{margin:0;font-weight:700}.nr305-remedy,.nr305-actions,.nr305-finish-actions{display:flex;gap:7px;flex-wrap:wrap}.nr305-remedy .btn,.nr305-actions .btn,.nr305-finish-actions .btn{margin:0}.nr305-actions{border-top:1px solid #eaecf0;padding-top:10px}.nr305-bottombar{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:12px}.nr305-setup{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:12px;padding:14px;border-radius:16px;background:#f9fafb;border:1px solid #eaecf0}.nr305-setup small{display:block;margin-bottom:7px;font-weight:800;color:#475467}.nr305-setup p{grid-column:1/-1;margin:0}.nr305-finish{margin-top:14px;display:flex;justify-content:space-between;align-items:center;gap:18px}.nr305-finish h2{margin:3px 0}.nr305-finish p{margin:0;color:#475467}.nr305-details{margin-top:14px}.nr305-details>summary{cursor:pointer;font-weight:850;font-size:1.03rem}.nr305-detailgrid,.nr305-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:15px}.nr305-tools{grid-template-columns:2fr 1fr}.nr305-list{display:grid;gap:7px}.nr305-row{display:grid;grid-template-columns:1fr auto;gap:2px 10px;padding:8px 0;border-bottom:1px solid #eaecf0}.nr305-row strong{font-size:.9rem}.nr305-row span{font-size:.82rem;color:#475467}.nr305-row small{grid-column:1/-1;color:#667085}.nr305-trend{display:flex;gap:5px;align-items:end;min-height:70px;padding-top:8px}.nr305-trend i{display:block;flex:1;min-width:6px;border-radius:5px 5px 2px 2px;background:#344054}.nr305-archive{display:grid;grid-template-columns:repeat(10,1fr);gap:5px}.nr305-day{padding:7px 2px;border:1px solid #eaecf0;border-radius:9px;text-align:center;font-size:.7rem}.nr305-day.done{background:#ecfdf3;border-color:#abefc6}.nr305-paused .nr305-staff,.nr305-paused .nr305-piano-wrap,.nr305-paused .nr305-names{filter:blur(6px);pointer-events:none}.nr305-game.sprint-live{box-shadow:0 0 0 2px #101828}.nr305-game.sprint-low #nr305Time{color:#b42318}.nr305-status-bad{color:#b42318}.nr305-status-good{color:#027a48}.nr305-board[aria-busy="true"]{opacity:.72}.nr305-focus .topbar,.nr305-focus .preview-note,.nr305-focus .nr305-hero,.nr305-focus .nr305-details,.nr305-focus .footer,.nr305-focus .mobile-dock{display:none!important}.nr305-focus .nr305{max-width:980px;padding-top:14px}.nr305-focus .nr305-game{margin:0}.nr305-tools .nr305-actions{border:0;padding:0}
@media(max-width:760px){.nr305-page .mobile-dock{display:none!important}.nr305-page .preview-note{display:none}.nr305-page .topbar{position:relative}.nr305-page .nav{min-height:58px}.nr305{padding-left:12px;padding-right:12px}.nr305-hero{display:block;margin:16px 0 10px}.nr305-hero h1{font-size:2.15rem}.nr305-hero p{font-size:.91rem}.nr305-hero-badge{display:none}.nr305-game{padding:12px}.nr305-scrollrow{flex-wrap:nowrap;overflow-x:auto;padding-bottom:3px;scrollbar-width:none}.nr305-scrollrow::-webkit-scrollbar{display:none}.nr305-more>div{position:fixed;left:12px;right:12px;top:auto;min-width:0}.nr305-clefs{margin-top:6px}.nr305-metrics{grid-template-columns:repeat(5,minmax(72px,1fr));overflow-x:auto;margin:9px 0 8px;padding-bottom:2px}.nr305-metrics>div{padding:7px 8px}.nr305-board{padding:9px;border-radius:16px}.nr305-staffcard{padding:7px}.nr305-staff{height:150px}.nr305-staff svg{height:150px}.nr305-piano{height:112px}.nr305-piano-inner{height:108px}.nr305-key.white{height:106px}.nr305-key.black{height:66px}.nr305-feedback{align-items:flex-start;flex-direction:column;min-height:42px}.nr305-remedy{width:100%}.nr305-actions{flex-wrap:nowrap;overflow-x:auto}.nr305-actions .btn{white-space:nowrap}.nr305-bottombar{display:block}.nr305-bottombar>#nr305Setup{margin-top:7px;width:100%}.nr305-setup{grid-template-columns:1fr;padding:10px}.nr305-setup p{grid-column:auto}.nr305-finish{display:block}.nr305-finish-actions{margin-top:12px}.nr305-detailgrid,.nr305-tools{grid-template-columns:1fr}.nr305-archive{grid-template-columns:repeat(6,1fr)}.nr305-names button{min-height:50px}.nr305-promptline{font-size:.88rem}.nr305-promptline span{font-size:.75rem}}
@media(max-width:420px){.nr305-staff{height:138px}.nr305-staff svg{height:138px}.nr305-metrics small{font-size:.64rem}.nr305-metrics strong{font-size:.96rem}.nr305-scrollrow button,.nr305-more summary{padding:7px 10px;font-size:.86rem}.nr305-hero p{display:none}}