:root{--ink:#041E42;--ink-soft:#4C5C78;--page-bg:#F5F7FB;--card-bg:#FFFFFF;--card-border:#D6DEEC;--surface-tint:#E8EEF9;--brand:#003087;--brand-strong:#001F5C;--brand-solid:#003087;--brand-solid-hover:#001F5C;--header-bg:#003087;--header-nav-text:#C9D6F0;--gold:#FFB81C;--gold-strong:#04234D;--gold-bg:#FFF6E2;--gold-border:#F3D48A;--success:#2F9E55;--success-bg:#E3F6E8;--success-text:#1C6B38;--error:#C8102E;--error-bg:#FBE7EA;--error-text:#8C0A20;--highlight:#D9480F;--highlight-text:#A04529;--white:#FFFFFF;--key-white-bg:#FFFFFF;--key-white-text:#35435F;--key-black-bg:#202E4E;--key-start-white-bg:#FFE1A0;--key-start-black-bg:#93652C;--key-picked-white-bg:#82A8FF;--key-picked-black-bg:#EC895F;--key-picked-white-text:#152A55;--key-picked-black-text:#1F2436}
[data-theme="dark"]{--ink:#EAF0FF;--ink-soft:#A9BEDD;--page-bg:#0A1830;--card-bg:#102243;--card-border:#24406E;--surface-tint:#1B3260;--brand:#7C9EE8;--brand-strong:#A8C2F2;--brand-solid:#003087;--brand-solid-hover:#001F5C;--header-bg:#1450B8;--header-nav-text:#CFE0FF;--gold:#FFB81C;--gold-strong:#04234D;--gold-bg:#3A2C0C;--gold-border:#6B4E1D;--success:#55CC88;--success-bg:#17301F;--success-text:#8CEBB0;--error:#F0798A;--error-bg:#3A141B;--error-text:#F5A6B2;--highlight:#FF7A3D;--highlight-text:#FFAB8A;--white:#FFFFFF}
body{transition:background 0.2s ease,color 0.2s ease}
.theme-toggle{background:rgba(255,255,255,0.14);border:1.5px solid rgba(255,255,255,0.4);color:var(--header-nav-text);border-radius:10px;padding:7px 11px;font-weight:800;cursor:pointer;font-size:1.05rem;line-height:1;display:inline-flex;align-items:center;gap:6px}
.theme-toggle:hover{background:rgba(255,255,255,0.24)}
:root{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--page-bg);font-size:16px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}button{font:inherit;cursor:pointer}button:disabled{cursor:not-allowed}a{color:inherit}.site-header{background:var(--header-bg);color:var(--white)}.site-header-inner{max-width:1180px;margin:auto;padding:16px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-weight:850;font-size:1.12rem;text-decoration:none}.site-header nav{display:flex;gap:13px;align-items:center;flex-wrap:wrap}.site-header nav a,.site-header nav span{font-size:.9rem;color:var(--header-nav-text);text-decoration:none;padding:7px 9px;border-radius:8px}.site-header nav .current{background:var(--brand-solid-hover);color:var(--white)}.site-header nav a:hover{background:var(--brand-solid-hover)}.layout{max-width:1180px;margin:auto;padding:32px 22px 70px}.eyebrow{text-transform:uppercase;color:var(--brand);font-weight:850;letter-spacing:.1em;font-size:.78rem}.page-head{max-width:830px;margin-bottom:28px}.page-head h1{font-size:clamp(2.1rem,4.8vw,3.4rem);line-height:1.08;letter-spacing:-.045em;margin:8px 0 12px}.page-head p{font-size:1.12rem;line-height:1.55;color:var(--ink-soft);margin:0}.lesson-section{margin:28px 0}.section-heading{margin:0 0 16px}.section-heading h2{font-size:clamp(1.55rem,3vw,2rem);letter-spacing:-.03em;margin:7px 0}.section-heading p{color:var(--ink-soft);line-height:1.5;margin:0;max-width:760px}.concept-grid{display:grid;gap:16px}.concept-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.concept-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.concept{background:var(--card-bg);border:1px solid var(--card-border);border-radius:17px;padding:21px;min-width:0}.concept-number{display:inline-block;background:var(--surface-tint);color:var(--brand);border-radius:8px;padding:6px 9px;font-weight:850;font-size:.8rem;margin-bottom:12px}.concept h3{font-size:1.3rem;letter-spacing:-.02em;margin:0 0 8px}.concept p{color:var(--ink-soft);line-height:1.48;margin:0 0 12px}.pattern{display:flex;gap:5px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--surface-tint);border-radius:9px;padding:10px;margin:10px 0;color:var(--brand)}.pattern:empty{display:none}.pattern b{background:var(--card-bg);border-radius:6px;min-width:28px;text-align:center;padding:5px 7px}.pattern span{font-size:.81rem;font-weight:750}.score-figure{margin:8px 0 10px}.score{width:100%;min-height:172px}.score svg{max-width:100%;height:auto}.score-figure figcaption{font-size:.85rem;color:var(--ink-soft);font-weight:700;margin-top:-4px}.listen{background:var(--surface-tint);border:0;color:var(--brand);border-radius:9px;padding:8px 12px;font-weight:800}.listen:hover{background:var(--surface-tint)}.bridge-note{background:var(--surface-tint);border-left:4px solid var(--brand);border-radius:0 9px 9px 0;color:var(--ink-soft);padding:13px 16px;margin:18px 0 30px;line-height:1.5}.practice{margin-top:36px}.practice-header{display:flex;align-items:end;justify-content:space-between;gap:15px;margin-bottom:16px}.practice-header h2{font-size:clamp(1.55rem,3vw,2rem);margin:6px 0}.practice-header p{color:var(--ink-soft);margin:0;line-height:1.45}.progress-badge{background:var(--surface-tint);color:var(--brand);font-weight:850;border-radius:99px;padding:9px 13px;white-space:nowrap}.practice-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(325px,420px);gap:18px;align-items:start}.workspace,.activity-panel{background:var(--card-bg);border:1px solid var(--card-border);border-radius:17px;box-shadow:0 12px 30px var(--header-bg)09;min-width:0}.workspace{padding:22px}.active-question{background:var(--surface-tint);color:var(--brand-strong);border-radius:10px;font-weight:800;padding:12px 14px;line-height:1.4;margin-bottom:17px}.keyboard{--key-w:40px;position:relative;width:calc(var(--white-count) * var(--key-w));max-width:100%;margin:0 auto;height:190px;display:flex;user-select:none}.key{border:1px solid var(--card-border);display:flex;justify-content:center;align-items:flex-end;padding:0 2px 9px;box-sizing:border-box}.key.white{flex:0 0 var(--key-w);width:var(--key-w);height:190px;background:var(--key-white-bg);color:var(--key-white-text);border-radius:0 0 7px 7px}.key.white.start{background:var(--key-start-white-bg)}.key.white.picked{background:var(--key-picked-white-bg);color:var(--key-picked-white-text)}.key.black{position:absolute;z-index:2;top:0;transform:translateX(-50%);width:calc(var(--key-w) * .62);height:116px;border-color:var(--key-black-bg);background:var(--key-black-bg);color:var(--white);border-radius:0 0 6px 6px;font-size:.72rem}.key.black.start{background:var(--key-start-black-bg)}.key.black.picked{background:var(--key-picked-black-bg);color:var(--key-picked-black-text)}.key:hover{filter:brightness(.94)}.keyboard-note{font-size:.91rem;color:var(--ink-soft);margin:11px 0}.chosen{display:flex;align-items:center;gap:7px;flex-wrap:wrap;min-height:42px;margin:10px 0 14px}.chosen-label{color:var(--ink-soft);font-weight:750;font-size:.9rem;margin-right:3px}.note-chip{background:var(--surface-tint);color:var(--brand);border-radius:8px;padding:7px 9px;min-width:39px;text-align:center;font-weight:850}.empty{color:var(--ink-soft);font-style:italic}.workspace-actions{display:flex;gap:8px;flex-wrap:wrap}.workspace-actions button,.footer-nav a,.hero-link{border:0;border-radius:9px;padding:10px 14px;font-weight:800}.primary{background:var(--brand-solid);color:var(--white)}.secondary{background:var(--surface-tint);color:var(--brand-strong)}.workspace-actions button:disabled{opacity:.52}.builder-feedback{margin:14px 0 0;min-height:25px;font-weight:750;color:var(--brand)}.builder-feedback.good{color:var(--success-text)}.builder-feedback.bad{color:var(--highlight-text)}.activity-panel{padding:17px;display:grid;gap:9px}.activity{border:1px solid var(--card-border);border-radius:11px;background:var(--card-bg);padding:11px;text-align:left;width:100%;color:var(--ink-soft);display:grid;grid-template-columns:27px 1fr auto;gap:8px;align-items:start}.activity.active{border-color:var(--brand);background:var(--surface-tint);box-shadow:inset 0 0 0 1px var(--brand)}.activity.done{border-color:var(--success);background:var(--success-bg)}.q-number{background:var(--surface-tint);border-radius:7px;text-align:center;padding:4px 2px;color:var(--brand);font-weight:850;font-size:.84rem}.q-text{font-weight:750;line-height:1.35}.q-state{font-size:.8rem;color:var(--ink-soft);white-space:nowrap}.activity.done .q-state{color:var(--success-text);font-weight:800}.footer-nav{display:flex;justify-content:space-between;gap:15px;margin-top:23px}.footer-nav a{text-decoration:none;display:inline-flex;align-items:center}.footer-nav .back{background:var(--surface-tint);color:var(--brand-strong)}.footer-nav .locked{background:var(--card-border);color:var(--ink-soft);pointer-events:none}.footer-nav .ready{background:var(--header-bg);color:var(--white)}.site-footer{max-width:1180px;margin:auto;padding:0 22px 25px;color:var(--ink-soft);font-size:.88rem}.hero{background:var(--header-bg);color:var(--white);border-radius:22px;padding:43px 45px;margin-bottom:38px;min-height:280px}.hero .eyebrow{color:var(--gold)}.hero h1{font-size:clamp(2.4rem,5vw,4.15rem);line-height:1.05;letter-spacing:-.05em;max-width:900px;margin:13px 0}.hero p{font-size:1.13rem;line-height:1.5;max-width:650px;color:var(--header-nav-text);margin:0 0 26px}.hero-link{display:inline-block;background:var(--gold);color:var(--brand-solid);text-decoration:none}.home-lessons{max-width:950px}.lesson-list{display:grid;gap:12px}.lesson-tile{display:grid;grid-template-columns:46px 1fr auto;align-items:center;gap:15px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:14px;padding:17px;text-decoration:none}.lesson-tile[aria-disabled=true]{opacity:.62;cursor:not-allowed}.tile-number{background:var(--surface-tint);color:var(--brand);border-radius:9px;padding:10px 0;text-align:center;font-weight:850}.tile-copy{display:grid;gap:4px}.tile-copy strong{font-size:1.13rem}.tile-copy span{color:var(--ink-soft)}.lesson-status{color:var(--brand);font-weight:800;font-size:.91rem;text-align:right}@media(max-width:950px){.practice-layout{grid-template-columns:minmax(0,1fr)}.activity-panel{order:-1}.concept-grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:660px){.site-header-inner{display:block}.site-header nav{margin-top:8px;gap:5px}.layout{padding:24px 15px 55px}.concept-grid.two,.concept-grid.three{grid-template-columns:1fr}.concept{padding:18px}.hero{padding:31px 24px;min-height:0}.practice-header{display:block}.progress-badge{display:inline-block;margin-top:12px}.workspace,.activity-panel{padding:15px}.keyboard{--key-w:30px;height:168px}.key.white{height:168px;font-size:.75rem}.key.black{height:102px;font-size:.64rem;padding-bottom:7px}.lesson-tile{grid-template-columns:42px 1fr;gap:10px}.lesson-status{grid-column:2;text-align:left}.activity{grid-template-columns:25px 1fr}.q-state{grid-column:2}.footer-nav{flex-wrap:wrap}}

.noteflight-box{margin-top:24px;background:var(--surface-tint);border:1px solid var(--surface-tint);border-radius:16px;padding:21px 23px;display:flex;justify-content:space-between;align-items:center;gap:22px}.noteflight-box h2{font-size:1.38rem;margin:5px 0 8px}.noteflight-box p{margin:0;max-width:690px;line-height:1.5;color:var(--ink-soft)}.noteflight-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.noteflight-actions a{white-space:nowrap;border-radius:9px;padding:10px 13px;font-weight:800;text-decoration:none}.noteflight-launch{background:var(--brand-solid);color:var(--white)}.musicfirst-link{background:var(--card-bg);color:var(--brand)}@media(max-width:760px){.noteflight-box{display:block}.noteflight-actions{margin-top:15px}}

.student-bar{background:var(--header-bg);color:var(--header-nav-text);font-size:.86rem;display:flex;align-items:center;gap:14px;padding:9px 22px}.student-bar-note{margin-right:auto}.student-bar-link{background:transparent;border:1px solid var(--brand-strong);color:var(--header-nav-text);border-radius:99px;padding:5px 12px;font-size:.82rem;font-weight:700}.student-bar-link:hover{background:var(--header-bg)}@media(max-width:660px){.student-bar{flex-wrap:wrap;padding:9px 15px}}

.duration-picker{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;margin-bottom:14px}.duration-chip{background:var(--surface-tint);border:1px solid var(--surface-tint);border-radius:12px;padding:10px 6px 12px;display:grid;justify-items:center;gap:2px;color:var(--brand-strong)}.duration-chip:hover{background:var(--surface-tint)}.duration-icon{width:100%;height:46px;display:flex;align-items:center;justify-content:center;overflow:hidden}.duration-icon svg{height:100%;width:auto;max-width:100%}.duration-label{font-weight:800;font-size:.9rem}.duration-sub{font-size:.8rem;color:var(--ink-soft)}.measure-wrap{display:flex;align-items:center;gap:12px;min-height:100px;margin:4px 0 14px}.measure-staff{flex:1;min-width:0;min-height:90px}.measure-staff svg{max-width:100%}.beat-total{background:var(--header-bg);color:var(--gold);border-radius:8px;padding:6px 10px;font-weight:850;font-size:.85rem;white-space:nowrap}@media(max-width:660px){.duration-picker{grid-template-columns:repeat(2,minmax(0,1fr))}.measure-wrap{flex-wrap:wrap}}

.myp-card{margin-top:24px;background:var(--gold-bg);border:1px solid var(--gold-border);border-radius:16px;padding:21px 23px}.myp-head h2{font-size:1.24rem;margin:5px 0 12px;letter-spacing:-.01em}.myp-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:14px}.myp-grid strong{display:block;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink);margin-bottom:5px}.myp-grid p{margin:0;line-height:1.45;color:var(--ink-soft)}.myp-terms{display:flex;flex-wrap:wrap;gap:7px;align-content:flex-start}.myp-chip{background:var(--gold);color:var(--gold-strong);border-radius:99px;padding:6px 12px;font-weight:850;font-size:.82rem;text-transform:uppercase}.myp-prompts{border-top:1px solid var(--gold-border);padding-top:12px;display:grid;gap:6px}.myp-prompts p{margin:0;line-height:1.5;color:var(--ink-soft)}@media(max-width:950px){.myp-grid{grid-template-columns:1fr}}

.noteflight-checklist{margin-top:14px;background:var(--card-bg);border-radius:10px;padding:12px 15px}.noteflight-checklist .eyebrow{display:block;margin-bottom:6px}.noteflight-checklist ul{margin:0;padding-left:19px;color:var(--ink-soft);line-height:1.55}

.home-lessons.pilot{margin-top:30px;padding-top:26px;border-top:1px solid var(--card-border)}.home-lessons.pilot .lesson-tile{border-color:var(--gold-border);background:var(--gold-bg)}.home-lessons.pilot .tile-number{background:var(--gold);color:var(--gold-strong)}.targets-list{background:var(--card-bg);border:1px solid var(--card-border);border-radius:14px;padding:18px 20px;margin:0;list-style:none;display:grid;gap:11px}.targets-list li{position:relative;padding-left:24px;color:var(--ink-soft);line-height:1.5;font-weight:600}.targets-list li::before{content:'';position:absolute;left:0;top:7px;width:9px;height:9px;border-radius:3px;background:var(--brand-solid)}.nf-task{background:var(--card-bg);border-radius:10px;padding:12px 15px;margin:14px 0 0;color:var(--ink-soft);line-height:1.5}.complete-row{background:var(--card-bg);border:1px solid var(--card-border);border-radius:17px;padding:20px 22px;margin-top:28px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}.complete-note{margin:0;color:var(--ink-soft);line-height:1.4;flex:1;min-width:200px}.mt-course{margin-top:34px;padding-top:30px;border-top:1px solid var(--card-border)}.mt-course-unit{margin-bottom:26px}.mt-course-unit-head{margin-bottom:12px}.mt-course-unit-head h3{font-size:1.25rem;letter-spacing:-.02em;margin:5px 0 6px}.mt-course-unit-head p{color:var(--ink-soft);line-height:1.45;margin:0;max-width:700px}.mt-course .lesson-tile span.lesson-status{white-space:normal;text-align:right;max-width:170px}@media(max-width:660px){.complete-row{display:block}.complete-note{margin-top:10px}}
.concept-grid.one{grid-template-columns:1fr}
.melody-score{width:100%;min-height:120px}
.melody-score svg{display:block;max-width:100%;height:auto}
.vocab-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px;margin:0}
.vocab-item{background:var(--card-bg);border:1px solid var(--card-border);border-radius:14px;padding:14px 16px}
.vocab-item dt{font-weight:850;color:var(--ink);margin-bottom:4px}
.vocab-item dd{margin:0;color:var(--ink-soft);line-height:1.45}
.worked-example{background:var(--card-bg);border:1px solid var(--card-border);border-radius:17px;padding:21px}
.steps-list{margin:14px 0 8px;padding-left:22px;color:var(--ink);line-height:1.6}
.steps-list li{margin-bottom:4px}
.summary-line{background:var(--surface-tint);border-radius:10px;padding:12px 14px;color:var(--brand);margin:12px 0 0;line-height:1.5}
.check-tally{font-weight:800;color:var(--brand);margin-top:6px}
.check-list{display:grid;gap:14px}
.check-q{background:var(--card-bg);border:1px solid var(--card-border);border-radius:17px;padding:18px 21px}
.check-prompt{font-weight:750;color:var(--ink);margin:0 0 10px;line-height:1.45}
.check-num{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:8px;background:var(--surface-tint);color:var(--brand);font-size:.85rem;font-weight:850;margin-right:10px}
.check-options{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.check-option{background:var(--card-bg);border:1.5px solid var(--card-border);border-radius:10px;padding:9px 14px;font-weight:750;color:var(--ink-soft);cursor:pointer;font:inherit;font-weight:750}
.check-option:hover{border-color:var(--brand)}
.check-option.picked-right{background:var(--success-bg);border-color:var(--success);color:var(--success-text)}
.check-option.picked-wrong{background:var(--error-bg);border-color:var(--error);color:var(--error-text)}
.check-feedback{margin:12px 0 0;padding:10px 13px;border-radius:10px;line-height:1.45}
.check-feedback.is-right{background:var(--success-bg);color:var(--success-text)}
.check-feedback.is-wrong{background:var(--error-bg);color:var(--error-text)}
.nf-tip{background:var(--surface-tint);border:1px solid var(--surface-tint);border-radius:17px;padding:18px 21px;margin:18px 0}
.nf-tip h3{margin:6px 0 8px}
.nf-tip ol{margin:0;padding-left:22px;line-height:1.6;color:var(--ink)}
.target-chips{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0 4px}
.target-chips:empty{display:none}
.target-chip{display:inline-block;background:var(--gold-bg);color:var(--ink);border:1px solid var(--gold-border);border-radius:999px;padding:2px 9px;font-size:.74rem;font-weight:850;letter-spacing:.02em;white-space:nowrap}
.targets-list.numbered li{padding-left:0}
.targets-list.numbered li{display:flex;gap:10px;align-items:baseline}
.targets-list.numbered li::before{display:none}
.nf-studio{margin:30px 0 22px;border-radius:22px;overflow:hidden;border:1px solid var(--card-border);background:var(--surface-tint)}
.nf-studio-head{background:linear-gradient(135deg,var(--header-bg) 0%,var(--header-bg) 100%);color:var(--white);padding:26px 28px;display:flex;justify-content:space-between;gap:26px;align-items:flex-start}
.nf-studio-head .eyebrow{color:var(--header-nav-text)}
.nf-studio-head h2{color:var(--white);font-size:1.7rem;margin:6px 0 8px;letter-spacing:-.02em}
.nf-studio-head p{color:var(--header-nav-text);line-height:1.5;margin:0;max-width:640px}
.nf-task-card{margin-top:16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);border-left:4px solid var(--gold);border-radius:12px;padding:13px 16px;max-width:640px}
.nf-task-card .eyebrow{color:var(--gold)}
.nf-task-card p{color:var(--white);font-weight:650;margin-top:5px}
.nf-studio-actions{display:flex;flex-direction:column;gap:9px;min-width:200px}
.nf-studio-actions a{text-align:center;border-radius:11px;padding:12px 16px;font-weight:850;text-decoration:none;white-space:nowrap}
.nf-studio-actions .noteflight-launch{background:var(--gold);color:var(--brand-solid);font-size:1.05rem}
.nf-studio-actions .noteflight-launch:hover{background:var(--gold)}
.nf-studio-actions .musicfirst-link{background:rgba(255,255,255,.12);color:var(--white);border:1px solid rgba(255,255,255,.25)}
.nf-signin{font-size:.8rem;color:var(--header-nav-text);line-height:1.4;max-width:220px}
.nf-studio-body{padding:24px 28px 28px;display:grid;gap:24px}
.nf-block-title{display:flex;align-items:center;gap:10px;font-size:1.12rem;margin:0 0 12px;color:var(--ink)}
.nf-step{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--brand-solid);color:var(--white);font-size:.9rem;font-weight:850;flex:none}
.bp-grid{display:grid;grid-template-columns:repeat(var(--bp-cols,4),minmax(0,1fr));gap:0;background:var(--card-bg);border:2px solid var(--brand);border-radius:16px;overflow:hidden}
.bp-tile{padding:16px 16px 18px;border-right:2px solid var(--brand);min-width:0}
.bp-tile:last-child{border-right:0}
.bp-top{display:flex;justify-content:space-between;align-items:center;gap:6px;margin-bottom:8px}
.bp-measure{font-size:.76rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft)}
.bp-shape{width:100%;height:auto;display:block;margin:4px 0 8px}
.bp-staff{stroke:var(--card-border);stroke-width:1.2}
.bp-line{fill:none;stroke:var(--brand);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:6 5}
.bp-dot{fill:var(--highlight)}
.bp-move{display:block;font-size:1.08rem;color:var(--ink);margin-bottom:3px}
.bp-tile p{margin:0;color:var(--ink-soft);line-height:1.4;font-size:.93rem}
.nf-also-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.nf-also{display:flex;gap:12px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:15px;padding:15px}
.nf-also-icon{flex:none;display:grid;place-items:center;min-width:44px;height:44px;padding:0 6px;border-radius:12px;background:var(--surface-tint);color:var(--brand);font-weight:900;font-size:1.05rem}
.nf-also p{margin:6px 0 0;color:var(--ink);line-height:1.45;font-size:.95rem}
.nf-two{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.nf-two>.nf-block{background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:18px 20px}
.how-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.how-list li{display:flex;gap:11px;align-items:flex-start;color:var(--ink);line-height:1.5}
.how-num{flex:none;display:grid;place-items:center;width:24px;height:24px;border-radius:7px;background:var(--surface-tint);color:var(--brand);font-weight:850;font-size:.82rem;margin-top:1px}
kbd{display:inline-block;min-width:1.6em;text-align:center;font:inherit;font-weight:850;font-size:.9em;background:var(--card-bg);border:1px solid var(--card-border);border-bottom-width:3px;border-radius:7px;padding:1px 7px;color:var(--ink);white-space:nowrap}
.self-check-tally{margin:-4px 0 10px;font-weight:800;color:var(--brand);font-size:.9rem}
.self-check{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.self-check label{display:flex;gap:10px;align-items:flex-start;cursor:pointer;color:var(--ink);line-height:1.45}
.self-check input{width:19px;height:19px;margin-top:2px;accent-color:var(--success);flex:none}
.self-check li.done span{color:var(--success-text);text-decoration:line-through;text-decoration-color:var(--success)}
@media(max-width:900px){.nf-studio-head{flex-direction:column}.nf-studio-actions{flex-direction:row;flex-wrap:wrap;min-width:0}.nf-signin{max-width:none}.bp-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bp-tile:nth-child(2){border-right:0}.bp-tile:nth-child(-n+2){border-bottom:2px solid var(--brand)}.nf-also-grid,.nf-two{grid-template-columns:1fr}}
@media(max-width:560px){.nf-studio-head,.nf-studio-body{padding-left:16px;padding-right:16px}.bp-grid{grid-template-columns:1fr}.bp-tile,.bp-tile:nth-child(2){border-right:0;border-bottom:2px solid var(--brand)}.bp-tile:last-child{border-bottom:0}}
.analysis-table{width:100%;border-collapse:collapse;margin:16px 0 4px;font-size:.95rem}
.analysis-table th{text-align:left;font-size:.76rem;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-soft);padding:8px 10px;border-bottom:2px solid var(--card-border)}
.analysis-table td{padding:9px 10px;border-bottom:1px solid var(--card-border);color:var(--ink);vertical-align:top;line-height:1.4}
.analysis-table td:first-child{white-space:nowrap;font-weight:750;color:var(--ink)}
.worked-note{color:var(--ink-soft);line-height:1.5;margin:12px 0 0}
.check-figures{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:10px 0}
.check-figure{border:1px solid var(--card-border);border-radius:12px;padding:8px 10px 0}
.check-fig-label{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:8px;background:var(--brand-solid);color:var(--white);font-weight:850}
.bp-tile{display:flex;flex-direction:column}
.bp-example{margin-top:auto;padding-top:10px;border-top:1px dashed var(--card-border)}
.bp-ex-label{display:block;font-size:.72rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:2px}
.bp-example .score-figure{margin:0 0 6px}
.bp-example .melody-score{min-height:0}
.bp-example figcaption{font-size:.78rem;margin-top:0}
.bp-example .listen{font-size:.85rem;padding:6px 10px}
@media(max-width:700px){.check-figures{grid-template-columns:1fr}.analysis-table td:first-child{white-space:normal}}
.contour-sketch{margin:4px 0 6px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:8px 10px 6px}
.contour-sketch svg{display:block;width:100%;height:96px;overflow:visible}
.cs-line{vector-effect:non-scaling-stroke}
.cs-line{fill:none;stroke:var(--brand);stroke-width:3.5;stroke-linecap:round;stroke-linejoin:round}
.cs-dot{fill:none;stroke-width:13;stroke-linecap:round;vector-effect:non-scaling-stroke}.cs-apex{stroke:var(--highlight)}.cs-low{stroke:var(--success)}
.contour-sketch figcaption{font-size:.76rem;color:var(--ink-soft);font-weight:700;display:flex;align-items:center;gap:5px}
.cs-key{display:inline-block;width:9px;height:9px;border-radius:50%;margin-left:6px}.cs-key-apex{background:var(--highlight)}.cs-key-low{background:var(--success)}
.before-after{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:6px 0 10px}
.before-after>div{border:1px solid var(--card-border);border-radius:12px;padding:10px 12px}
.ba-label{display:inline-block;font-size:.72rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:6px;background:var(--card-bg);color:var(--ink-soft)}
.ba-label.after{background:var(--success-bg);color:var(--success-text)}
@media(max-width:700px){.before-after{grid-template-columns:1fr}}
.score-figure.narrow{max-width:360px}
.nf-one>.nf-block{background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:18px 20px}
.nf-one .self-check{grid-template-columns:1fr 1fr;column-gap:24px}
.nf-tip-text{margin:0;color:var(--ink);line-height:1.55}
@media(max-width:700px){.nf-one .self-check{grid-template-columns:1fr}}
.tile-list{margin:4px 0 0;padding-left:18px;color:var(--ink);font-size:.9rem;line-height:1.45}
.tile-list li{margin-bottom:4px}
@media(max-width:700px){.analysis-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}}

/* --- Unit cards (home) and unit pages ------------------------------------ */
.unit-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.unit-card{display:flex;flex-direction:column;gap:9px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:17px;padding:19px;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s,box-shadow .15s}
.unit-card:hover,.unit-card:focus-visible{border-color:var(--brand);transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.08)}
.unit-card-top{display:flex;align-items:center;gap:11px}
.unit-badge{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:var(--brand-solid);color:var(--white);font-weight:850;font-size:1.1rem;flex:none}
.unit-card-title{font-size:1.18rem;letter-spacing:-.02em;line-height:1.25}
.unit-card-desc{color:var(--ink-soft);line-height:1.45;font-size:.95rem;flex:1}
.unit-card-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;border-top:1px solid var(--card-border);padding-top:11px;margin-top:3px;font-size:.88rem;font-weight:800}
.unit-card-count{color:var(--ink-soft)}
.unit-progress{color:var(--brand);text-align:right}
.unit-card.is-complete{border-color:var(--success)}
.unit-card.is-complete .unit-badge{background:var(--success)}
.unit-card.is-complete .unit-progress{color:var(--success-text)}
.crumb{display:inline-block;color:var(--brand);font-weight:800;font-size:.9rem;text-decoration:none;margin-bottom:12px}
.crumb:hover{text-decoration:underline}
.unit-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.unit-tag{background:var(--surface-tint);color:var(--brand-strong);border-radius:99px;padding:5px 11px;font-size:.84rem;font-weight:750}
.unit-goal{display:flex;flex-direction:column;gap:5px;background:var(--gold-bg);border:1px solid var(--gold-border);border-radius:14px;padding:15px 18px;max-width:830px;margin-bottom:8px}
.unit-goal strong{font-size:1.1rem}
.unit-page .lesson-list{max-width:950px}
.lesson-tile:hover{border-color:var(--brand)}
.lesson-tile.is-complete{border-color:var(--success)}
.lesson-tile.is-complete .lesson-status{color:var(--success-text)}
@media(max-width:660px){.unit-grid{grid-template-columns:1fr}.unit-card{padding:16px}}