/* Foundation shares NoteUnlock's palette and keeps its practice map in place. */
.foundation-top,.foundation-workspace{min-width:0}
.foundation-top{max-width:1140px;margin:8px auto 28px}
.foundation-introduction,.foundation-hero{padding:clamp(24px,4vw,44px)}
.foundation-introduction h1,.foundation-hero h1{max-width:850px;font-size:clamp(28px,3.4vw,42px);line-height:1.4;letter-spacing:-.65px}
.foundation-introduction p,.foundation-hero p{max-width:850px;line-height:1.85;font-size:16px;overflow-wrap:break-word}
.foundation-introduction .eyebrow,.foundation-hero .eyebrow{font-size:12px;letter-spacing:1.25px}
.foundation-introduction .foundation-lead,.foundation-hero .foundation-lead{font-size:19px;font-weight:650;color:var(--green);margin-top:20px}
.foundation-introduction p:last-child,.foundation-hero p:last-child{margin-bottom:0}
.foundation-positioning{border-left:4px solid var(--green);padding:13px 18px;margin:20px 0;background:var(--mint);border-radius:0 10px 10px 0;font-weight:650;line-height:1.75}
.foundation-top>.foundation-actions{margin:22px 0}
.foundation-top h2{font-size:25px;line-height:1.45;margin:26px 0 14px}
.foundation-lesson-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0 24px}
.foundation-lesson-list>button,.foundation-lesson-card{position:relative;display:grid;grid-template-columns:38px minmax(0,1fr) 24px;align-items:start;gap:12px;width:100%;min-height:132px;padding:18px;border:2px solid #99aa9d;border-radius:14px;text-align:left;background:var(--panel);box-shadow:0 2px 0 #23362e12;line-height:1.55}
.foundation-lesson-number{display:grid;place-items:center;width:36px;height:36px;border:1px solid #9aa99e;border-radius:50%;color:var(--green);background:var(--soft);font-size:16px;font-weight:750;font-variant-numeric:tabular-nums}
.foundation-lesson-card h3,.foundation-lesson-title{display:block;font-size:17px;line-height:1.5;color:var(--ink);font-weight:750;margin:0 0 6px;overflow-wrap:break-word}
.foundation-lesson-card p,.foundation-lesson-description{display:block;font-size:13px;line-height:1.65;font-weight:400;color:var(--muted);margin:0}
.foundation-lesson-card small,.foundation-lesson-state{display:block;margin-top:9px;font-size:12px;color:var(--green);font-weight:650}
.foundation-lesson-arrow{align-self:center;color:var(--green);font-size:28px;line-height:1}
.foundation-lesson-card[aria-current=step],.foundation-lesson-list>button[aria-current=step]{border-color:var(--green);background:var(--mint);box-shadow:inset 3px 0 0 var(--green)}
.foundation-lesson-card[aria-current=step] .foundation-lesson-number{background:var(--green);border-color:var(--green);color:white}
.foundation-lesson-card:disabled,.foundation-lesson-list>button:disabled{color:var(--muted);background:var(--soft);border-color:#c4ccc2;border-style:dashed;box-shadow:none}
.foundation-lesson-card:disabled .foundation-lesson-arrow,.foundation-lesson-card:disabled .foundation-lesson-state{color:var(--muted)}
.foundation-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin:5px 0 18px;min-width:0}
.foundation-heading h1{font-size:clamp(26px,2.8vw,36px);line-height:1.4;letter-spacing:-.5px}
.foundation-heading p{font-size:14px;line-height:1.7;color:var(--muted);margin:7px 0 0}
.foundation-heading .eyebrow{font-size:12px;color:var(--green);margin:0 0 7px}
.foundation-heading>button{flex:none}
.foundation-context{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:0 0 18px;padding:24px}
.foundation-context>div,.foundation-context>article,.foundation-context>details{min-width:0}
.foundation-context h2,.foundation-context h3{font-size:17px;line-height:1.5;color:var(--green);margin:0 0 10px}
.foundation-context p{font-size:14px;line-height:1.8;overflow-wrap:break-word;margin:0}
.foundation-context>div+div,.foundation-context>article+article{border-left:1px solid var(--line);padding-left:22px}
.foundation-stepper,.foundation-lesson-progress{display:flex;gap:8px;overflow-x:auto;overscroll-behavior-x:contain;scroll-padding:3px;padding:3px 2px 10px;margin:0 0 16px}
.foundation-stepper button,.foundation-lesson-progress button{position:relative;flex:0 0 148px;min-height:56px;padding:10px 22px 10px 12px;border:2px solid #99aa9d;border-radius:10px;text-align:left;line-height:1.4;font-size:13px;white-space:normal}
.foundation-stepper button::after,.foundation-lesson-progress button::after{content:'›';position:absolute;right:9px;top:50%;transform:translateY(-50%);font-size:23px;line-height:1;color:var(--green)}
.foundation-stepper button[aria-current=step],.foundation-lesson-progress button[aria-current=step]{background:var(--mint);border-color:var(--green);box-shadow:inset 0 0 0 1px var(--green);font-weight:750}
.foundation-stepper button[aria-current=step] strong,.foundation-lesson-progress button[aria-current=step] strong{text-decoration:underline;text-underline-offset:3px}
.foundation-stepper span,.foundation-lesson-progress span{display:block;font-size:11px;color:var(--muted);font-weight:400}
.foundation-coach{display:flex;align-items:center;justify-content:space-between;gap:24px;border-left:4px solid var(--green);padding:20px 24px;margin:0 0 18px}
.foundation-coach>div{min-width:0}
.foundation-coach h2{font-size:21px;line-height:1.4;margin-bottom:8px}
.foundation-coach p{font-size:15px;line-height:1.75;margin:0;overflow-wrap:break-word}
.foundation-coach .foundation-primary{flex:none;min-width:190px;max-width:300px}
.foundation-primary,.foundation-actions button,.foundation-controls button{min-height:52px;white-space:normal;line-height:1.4}
.foundation-primary.primary{min-height:56px;font-size:15px;padding:14px 20px}
.foundation-workbench{min-width:0;padding:22px;margin-bottom:18px}
.foundation-workbench>h2{font-size:21px;line-height:1.4;margin-bottom:14px}
.foundation-controls{display:flex;align-items:flex-end;flex-wrap:wrap;gap:10px 14px;margin:0 0 18px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.foundation-controls label,.foundation-controls .foundation-setting{display:flex;flex-direction:column;gap:7px;min-width:130px;flex:1;font-size:12px;font-weight:650;line-height:1.5}
.foundation-controls select,.foundation-controls input[type=number],.foundation-mastery select{width:100%;max-width:100%;min-width:0;min-height:48px;border:2px solid #99aa9d;border-radius:9px;padding:10px 12px;background:var(--panel);color:var(--ink);font-size:14px;cursor:pointer}
.foundation-controls input[type=number]{cursor:text}
.foundation-controls fieldset{min-width:0;border:0;padding:0;margin:0;flex:1}
.foundation-controls legend{font-size:12px;font-weight:650;padding:0;margin-bottom:7px}
.foundation-control-group,.foundation-mode-controls,.foundation-form-controls{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}
.foundation-control-group button,.foundation-mode-controls button,.foundation-form-controls button{min-height:48px;font-size:13px;padding:10px 13px;line-height:1.4}
.foundation-control-group button[aria-pressed=true],.foundation-mode-controls button[aria-pressed=true],.foundation-form-controls button[aria-pressed=true]{background:var(--mint);border-color:var(--green);box-shadow:inset 0 0 0 1px var(--green);font-weight:750}
.foundation-prompt{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:12px 0 16px;padding:17px 20px;background:var(--mint);border-left:4px solid var(--green);border-radius:0 12px 12px 0;min-height:88px}
.foundation-prompt h2,.foundation-prompt h3,.foundation-prompt strong{font-size:clamp(23px,3vw,34px);line-height:1.25;letter-spacing:-.5px;color:var(--green);margin:0}
.foundation-prompt p,.foundation-prompt small{display:block;font-size:13px;line-height:1.6;color:var(--muted);margin:7px 0 0}
.foundation-prompt .foundation-timer{flex:none;font-size:19px;color:var(--ink);font-weight:750;white-space:nowrap;margin:0}
.foundation-timer{font-variant-numeric:tabular-nums}
.foundation-board-scroll{max-width:100%;min-width:0;overflow-x:auto;overscroll-behavior-x:contain;scroll-padding-inline:32px;border:1px solid #d4ddd0;border-radius:12px;background:#f8f7ef;padding:12px 5px 8px;scrollbar-color:#8da38e #edf0e6}
.foundation-board{display:block;width:100%;max-width:none;height:auto;overflow:visible;margin:auto;touch-action:pan-x pan-y}
.foundation-board:not([data-layout=compact]):not(.compact){min-width:1100px}
.foundation-board[data-layout=compact],.foundation-board.compact{width:100%;min-width:0;max-width:780px}
.foundation-board-scroll:has(.foundation-board[data-layout=compact]),.foundation-board-scroll:has(.foundation-board.compact){overflow-x:hidden}
.foundation-wire{stroke:#8f9989;stroke-width:2;pointer-events:none}
.foundation-fret{stroke:#b8c1b0;stroke-width:2;pointer-events:none}
.foundation-nut{stroke:#3c4c40;stroke-width:5;pointer-events:none}
.foundation-fret-label,.foundation-string-label,.foundation-board .fret-label,.foundation-board .string-label{font-family:'Segoe UI','Yu Gothic UI',Arial,sans-serif;font-size:16px;fill:var(--muted);pointer-events:none}
.foundation-cell{cursor:pointer;outline:none;touch-action:manipulation}
.foundation-cell>.cell-hit,.foundation-cell>rect{fill:#fffef800;stroke:transparent;stroke-width:2;rx:6px;ry:6px}
.foundation-cell>rect:hover,.foundation-cell:hover>.cell-hit{fill:#dcebd358;stroke:#9caf96}
.foundation-cell:focus-visible>.cell-hit,.foundation-cell:focus-visible>rect{fill:#e5f2fb80;stroke:#277baa;stroke-width:3}
.foundation-cell:active>.cell-hit,.foundation-cell:active>rect{fill:#d2e0c8;stroke:var(--green);stroke-width:3}
.foundation-cell[aria-disabled=true]{cursor:default;pointer-events:none}
.foundation-cell[aria-disabled=true]>rect{fill:transparent;stroke:transparent}
.foundation-cell text{pointer-events:none}
.foundation-note circle,.foundation-note>circle{fill:#e4e9dc;stroke:#819376;stroke-width:2}
.foundation-note text{font-family:'Segoe UI','Yu Gothic UI',Arial,sans-serif;font-size:18px;font-weight:750;fill:#344d36;pointer-events:none;text-anchor:middle}
.foundation-note .foundation-role,.foundation-note text.role-label{font-size:12px;font-weight:700}
.foundation-note.root circle,.foundation-note[data-role=root] circle,.foundation-note[data-role='1'] circle{fill:var(--green);stroke:#88a473;stroke-width:3}
.foundation-note.root text,.foundation-note[data-role=root] text,.foundation-note[data-role='1'] text{fill:white}
.foundation-note.third circle,.foundation-note[data-role=third] circle,.foundation-note[data-role='3'] circle{fill:#f0ce93;stroke:#8a6630;stroke-width:2.5}
.foundation-note.third text,.foundation-note[data-role=third] text,.foundation-note[data-role='3'] text{fill:#503616}
.foundation-note.fifth circle,.foundation-note[data-role=fifth] circle,.foundation-note[data-role='5'] circle{fill:#d7e8ef;stroke:#437e95;stroke-width:2.5}
.foundation-note.fifth text,.foundation-note[data-role=fifth] text,.foundation-note[data-role='5'] text{fill:#24566b}
.foundation-note.seventh circle,.foundation-note[data-role=seventh] circle,.foundation-note[data-role='7'] circle{fill:#e8ddf0;stroke:#80618e;stroke-width:2.5}
.foundation-note.seventh text,.foundation-note[data-role=seventh] text,.foundation-note[data-role='7'] text{fill:#674979}
.foundation-note text.role-label{fill:#344d36;paint-order:stroke;stroke:#f1f0e7;stroke-width:2px}
#foundation-question-action{margin:12px 0}
#foundation-question-action:empty{display:none}
#foundation-question-action button{min-height:56px}
.foundation-live .foundation-next p{font-size:14px;line-height:1.5;margin:6px 0 0}
.foundation-note.found circle,.foundation-note.correct circle,.foundation-cell[aria-pressed=true] circle{stroke:var(--green);stroke-width:4}
.foundation-cell.correct>.cell-hit,.foundation-cell[data-result=correct]>rect{fill:#dcebd380;stroke:#68845f;stroke-width:2}
.foundation-cell.wrong>.cell-hit,.foundation-cell[data-result=wrong]>rect{fill:#ffe8d975;stroke:#ae6843;stroke-width:2}
.foundation-note.target circle,.foundation-note.active circle,.foundation-note[data-current=true] circle{stroke:#277baa;stroke-width:4}
.foundation-board[data-interactive=false] .foundation-cell,.foundation-board[aria-readonly=true] .foundation-cell{cursor:default;pointer-events:none}
.foundation-octave-line{stroke:#277baa;stroke-width:3;stroke-dasharray:7 5;fill:none;pointer-events:none}
.foundation-board-caption,.foundation-scroll-help{font-size:12px;line-height:1.7;color:var(--muted);margin:12px 0 0}
.foundation-scroll-help{display:flex;align-items:center;gap:8px;color:var(--green)}
.foundation-scroll-help::before{content:'↔';font-size:20px;font-weight:750}
.foundation-role-legend{display:flex;align-items:center;flex-wrap:wrap;gap:8px 18px;padding:13px 0 0;font-size:12px;line-height:1.5;color:var(--muted)}
.foundation-role-legend>span,.foundation-role-legend>div{display:inline-flex;align-items:center;gap:7px}
.foundation-role-legend i,.foundation-role-legend b{display:inline-grid;place-items:center;min-width:26px;height:26px;border:2px solid #819376;border-radius:50%;font-style:normal;font-weight:750;font-size:11px;color:#344d36;background:#e4e9dc}
.foundation-role-legend [data-role=root] i,.foundation-role-legend .root i,.foundation-role-legend [data-role='1'] i{background:var(--green);border-color:#88a473;color:white}
.foundation-role-legend [data-role=third] i,.foundation-role-legend .third i,.foundation-role-legend [data-role='3'] i{background:#f0ce93;border-color:#8a6630;color:#503616}
.foundation-role-legend [data-role=fifth] i,.foundation-role-legend .fifth i,.foundation-role-legend [data-role='5'] i{background:#d7e8ef;border-color:#437e95;color:#24566b}
.foundation-role-legend [data-role=seventh] i,.foundation-role-legend .seventh i,.foundation-role-legend [data-role='7'] i{background:#e8ddf0;border-color:#80618e;color:#674979}
.foundation-feedback{min-height:48px;display:flex;align-items:center;gap:10px;margin:14px 0 0;padding:11px 14px;border-left:3px solid #96a590;background:var(--soft);border-radius:0 9px 9px 0;font-size:14px;line-height:1.6}
.foundation-feedback.success,.foundation-feedback[data-result=correct]{color:#214f3d;background:#e7efdf;border-left-color:#3f794d}
.foundation-feedback.error,.foundation-feedback[data-result=wrong]{color:#754728;background:#fff0e4;border-left-color:#b07844}
.foundation-feedback:empty{visibility:hidden}
.foundation-fret-pad{display:grid;grid-template-columns:repeat(auto-fit,minmax(52px,1fr));gap:8px;width:100%;max-width:940px;margin:16px auto 4px;padding:4px 6px;overflow:visible}
.foundation-fret-pad button{min-width:0;min-height:56px;padding:11px 6px;border:2px solid #99aa9d;border-radius:10px;background:var(--panel);font-size:17px;font-weight:750;line-height:1.3;text-align:center;white-space:nowrap;font-variant-numeric:tabular-nums}
.foundation-fret-pad button:disabled{background:var(--soft);border-color:#c4ccc2;border-style:dashed;color:#778479;box-shadow:none}
.foundation-fret-pad button[data-result=correct]{background:var(--mint);border-color:var(--green)}
.foundation-fret-pad button[data-result=wrong]{background:#fff0e4;border-color:#b07844}
.foundation-results{margin-top:18px;padding:22px;background:var(--mint);border:1px solid #aec3a1;border-radius:14px}
.foundation-results h2{font-size:22px;line-height:1.4;margin:0 0 10px}
.foundation-results p{font-size:14px;line-height:1.75;margin:10px 0 0}
.foundation-result-stats,.foundation-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:16px 0}
.foundation-result-stats>div,.foundation-stats>div{min-width:0;padding:13px 0;border-top:1px solid #b7c9aa}
.foundation-result-stats strong,.foundation-stats strong{display:block;font-size:clamp(23px,2.5vw,31px);line-height:1.3;font-variant-numeric:tabular-nums;color:var(--green)}
.foundation-result-stats span,.foundation-stats span{display:block;font-size:12px;line-height:1.55;margin-top:6px;color:var(--muted)}
.foundation-improvement{font-weight:650;color:var(--green);font-size:14px;line-height:1.7}
.foundation-mastery{padding:22px;margin-top:18px;border:1px solid var(--line);background:var(--panel);border-radius:14px}
.foundation-mastery h2{font-size:22px;line-height:1.4;margin:0 0 10px}
.foundation-mastery>p{font-size:14px;color:var(--muted);line-height:1.75}
.foundation-mastery>label,.foundation-mastery form>label,.foundation-mastery .foundation-mastery-check{display:flex;align-items:flex-start;gap:12px;min-height:54px;border:2px solid #a4b2a5;border-radius:10px;padding:12px 14px;margin:10px 0;font-size:14px;line-height:1.65;cursor:pointer}
.foundation-mastery input[type=checkbox],.foundation-mastery input[type=radio]{flex:none;width:21px;height:21px;accent-color:var(--green);margin:2px 0 0;cursor:pointer}
.foundation-mastery>label:has(input:checked),.foundation-mastery form>label:has(input:checked),.foundation-mastery .foundation-mastery-check:has(input:checked){border-color:var(--green);background:var(--mint);box-shadow:inset 0 0 0 1px var(--green)}
.foundation-mastery>label:has(input:focus-visible),.foundation-mastery form>label:has(input:focus-visible),.foundation-mastery .foundation-mastery-check:has(input:focus-visible){outline:3px solid #277baa;outline-offset:3px}
.foundation-mastery label:has(select){display:flex;flex-direction:column;gap:8px;padding:0;border:0;margin:16px 0;cursor:default}
.foundation-mastery .foundation-confidence{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 16px}
.foundation-confidence button{flex:1;min-width:160px;min-height:48px;font-size:13px;line-height:1.45;text-align:left;white-space:normal}
.foundation-confidence button[aria-pressed=true]{background:var(--mint);border-color:var(--green)}
.foundation-live{display:grid;grid-template-columns:.8fr 1.3fr .8fr;gap:18px;align-items:center;padding:18px 20px;background:var(--mint);border-radius:12px;margin:14px 0}
.foundation-live>div{min-width:0}
.foundation-live small,.foundation-live>div>span{display:block;font-size:12px;color:var(--muted);line-height:1.5;margin-bottom:5px}
.foundation-live p{font-size:13px;line-height:1.65;color:var(--muted);margin:7px 0 0}
.foundation-live strong{display:block;font-size:clamp(25px,4vw,45px);line-height:1.2;color:var(--green);overflow-wrap:break-word}
.foundation-live .foundation-next strong{font-size:clamp(22px,3vw,30px)}
.foundation-live .foundation-target strong{font-size:clamp(22px,3vw,30px)}
.foundation-live .foundation-next{border-left:1px solid #afc2a0;padding-left:18px}
.foundation-live-cue{font-size:13px;line-height:1.7;margin-top:7px;color:var(--muted)}
.foundation-transport{position:sticky;bottom:12px;display:flex;align-items:center;justify-content:space-between;gap:14px;margin:16px 0 0;padding:13px 16px;border:1px solid var(--line);border-radius:13px;background:var(--panel);box-shadow:0 4px 20px #23382f10;z-index:9}
.foundation-transport>div{display:flex;align-items:center;gap:8px;min-width:0}
.foundation-transport button{min-height:52px;white-space:normal;line-height:1.35;font-size:14px;padding:11px 15px}
.foundation-transport .foundation-timer,.foundation-transport #foundation-music-time{flex:none;margin-left:auto;text-align:right;color:var(--muted);font-size:12px;line-height:1.5;font-variant-numeric:tabular-nums}
.foundation-transport>button.primary{flex:1;max-width:420px;min-width:0}
.foundation-actions{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.foundation-actions button{flex:1;min-width:150px;font-size:14px;line-height:1.45;padding:12px 16px}
.foundation-actions button.primary{flex:2}
.foundation-secondary-tools{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}
.foundation-secondary-tools button{min-height:48px;font-size:13px;line-height:1.4;white-space:normal}
.foundation-workspace details>summary{min-height:48px;padding:12px 14px;border:2px solid #a5b3a6;border-radius:10px;background:var(--panel);color:var(--green);cursor:pointer;font-size:14px;font-weight:650;line-height:1.5}
.foundation-workspace details[open]>summary{background:#eef2e8;border-color:var(--green)}
.foundation-workspace details>p{font-size:14px;line-height:1.8;margin-top:14px}
.foundation-playing .foundation-context{display:none}
.foundation-playing .foundation-context p,.foundation-playing .foundation-controls{display:none}
.foundation-playing .foundation-context h2,.foundation-playing .foundation-context h3{margin:0;font-size:14px}
.foundation-playing .foundation-coach{padding-block:14px}
.foundation-playing .foundation-coach h2{font-size:17px}
.foundation-playing .foundation-coach p{font-size:14px}
.foundation-playing .foundation-board-scroll{scroll-behavior:smooth}
.foundation-role-legend>span:nth-of-type(1){color:var(--green)}
.foundation-role-legend>span:nth-of-type(2){color:#795528}
.foundation-role-legend>span:nth-of-type(3){color:#24566b}
.foundation-role-legend>span:nth-of-type(4){color:#674979}

@media(hover:hover) and (pointer:fine){
  .foundation-lesson-list>button:hover:not(:disabled),.foundation-lesson-card:hover:not(:disabled){border-color:var(--green);background:#eef2e8;box-shadow:0 4px 8px #23362e18;transform:translateY(-2px)}
  .foundation-cell:hover .foundation-note circle{stroke:var(--green);stroke-width:3}
  .foundation-workspace details>summary:hover{background:#eef2e8;border-color:var(--green)}
}
@media(max-width:1000px){
  .foundation-context{gap:17px;padding:20px}
  .foundation-context>div+div,.foundation-context>article+article{padding-left:17px}
  .foundation-context h2,.foundation-context h3{font-size:16px}
  .foundation-coach{gap:18px;padding:18px 20px}
  .foundation-coach .foundation-primary{min-width:175px;max-width:240px}
  .foundation-workbench{padding:18px}
  .foundation-lesson-list>button,.foundation-lesson-card{padding:16px;gap:10px;grid-template-columns:34px minmax(0,1fr) 18px}
  .foundation-lesson-number{width:32px;height:32px;font-size:14px}
}
@media(max-width:760px){
  .foundation-top{margin:2px auto 22px}
  .foundation-introduction,.foundation-hero{padding:23px 20px}
  .foundation-introduction h1,.foundation-hero h1{font-size:29px;line-height:1.5;letter-spacing:-.5px}
  .foundation-introduction p,.foundation-hero p{font-size:15px;line-height:1.85}
  .foundation-introduction .foundation-lead,.foundation-hero .foundation-lead{font-size:17px}
  .foundation-positioning{font-size:14px;padding:12px 14px;margin:18px 0}
  .foundation-top h2{font-size:22px}
  .foundation-lesson-list{grid-template-columns:1fr;gap:10px;margin:14px 0 20px}
  .foundation-lesson-list>button,.foundation-lesson-card{grid-template-columns:32px minmax(0,1fr) 18px;padding:16px 14px;min-height:116px;gap:10px}
  .foundation-lesson-card h3,.foundation-lesson-title{font-size:16px;line-height:1.55}
  .foundation-lesson-card p,.foundation-lesson-description{font-size:13px}
  .foundation-heading{flex-wrap:wrap;align-items:flex-start;gap:12px;margin:4px 0 14px}
  .foundation-heading h1{font-size:26px;line-height:1.45}
  .foundation-heading p{font-size:13px}
  .foundation-context{grid-template-columns:1fr;gap:16px;padding:20px 18px;margin-bottom:14px}
  .foundation-context>div+div,.foundation-context>article+article{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:15px}
  .foundation-context h2,.foundation-context h3{font-size:17px;margin-bottom:7px}
  .foundation-context p{font-size:14px;line-height:1.8}
  .foundation-stepper,.foundation-lesson-progress{margin-bottom:13px}
  .foundation-stepper button,.foundation-lesson-progress button{flex-basis:146px;font-size:13px}
  .foundation-coach{display:block;padding:17px 18px;margin-bottom:14px}
  .foundation-coach h2{font-size:21px}
  .foundation-coach p{font-size:14px;line-height:1.8}
  .foundation-coach .foundation-primary{max-width:none;width:100%;margin-top:16px}
  .foundation-primary.primary{font-size:15px;min-height:56px}
  .foundation-workbench{padding:16px 10px;margin-bottom:14px}
  .foundation-workbench>h2{padding-inline:6px;font-size:20px}
  .foundation-controls{gap:11px 10px;padding-inline:6px;margin-bottom:14px}
  .foundation-controls label,.foundation-controls .foundation-setting{flex:1 1 calc(50% - 10px);min-width:0;font-size:12px}
  .foundation-controls select,.foundation-controls input[type=number]{font-size:13px;padding:10px 8px;min-height:48px}
  .foundation-control-group,.foundation-mode-controls,.foundation-form-controls{padding-inline:6px;gap:7px}
  .foundation-control-group button,.foundation-mode-controls button,.foundation-form-controls button{flex:1;min-width:65px;font-size:12px;padding:10px 8px}
  .foundation-prompt{padding:14px 15px;gap:12px;margin:12px 6px 14px;min-height:85px}
  .foundation-prompt h2,.foundation-prompt h3,.foundation-prompt strong{font-size:27px}
  .foundation-prompt p,.foundation-prompt small{font-size:12px}
  .foundation-prompt .foundation-timer{font-size:17px}
  .foundation-board-scroll{padding:10px 3px 6px;border-radius:9px}
  .foundation-board[data-layout=compact],.foundation-board.compact{min-width:var(--foundation-board-min-width,480px);max-width:none}
  .foundation-board-scroll:has(.foundation-board[data-layout=compact]),.foundation-board-scroll:has(.foundation-board.compact){overflow-x:auto}
  .foundation-board[data-layout=compact] .role-label,.foundation-board.compact .role-label{font-size:14px}
  .foundation-board-caption,.foundation-scroll-help{font-size:12px;margin:12px 6px 0}
  .foundation-role-legend{gap:8px 13px;padding:12px 6px 0;font-size:12px}
  .foundation-feedback{font-size:13px;margin:14px 6px 0;padding:10px 12px}
  .foundation-results,.foundation-mastery{padding:20px 16px;margin-top:16px}
  .foundation-results h2,.foundation-mastery h2{font-size:21px}
  .foundation-result-stats,.foundation-stats{gap:10px}
  .foundation-result-stats strong,.foundation-stats strong{font-size:25px}
  .foundation-result-stats span,.foundation-stats span{font-size:11px;line-height:1.55}
  .foundation-mastery>label,.foundation-mastery form>label,.foundation-mastery .foundation-mastery-check{font-size:13px;padding:11px 12px}
  .foundation-mastery form>.foundation-primary{width:100%;margin-top:6px}
  .foundation-confidence{display:grid!important;grid-template-columns:1fr;gap:8px}
  .foundation-confidence button{min-width:0;width:100%;font-size:13px}
  .foundation-live{grid-template-columns:.8fr 1.3fr;gap:12px;padding:16px;margin:14px 6px}
  .foundation-live strong{font-size:36px}
  .foundation-live>div:first-child strong{font-size:28px;white-space:nowrap}
  .foundation-live .foundation-target strong{font-size:24px}
  .foundation-live .foundation-next{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;border-left:0;border-top:1px solid #afc2a0;padding:11px 0 0}
  .foundation-live .foundation-next strong{font-size:25px}
  .foundation-transport{position:fixed;bottom:0;left:0;right:0;border-radius:0;margin:0;padding:10px 12px;padding-bottom:calc(10px + env(safe-area-inset-bottom));box-shadow:0 -4px 20px #23382f15;gap:10px}
  .foundation-transport>div{flex:1}
  .foundation-transport button{min-height:52px;font-size:13px;padding:10px 11px}
  .foundation-transport button.primary{flex:1;font-size:14px}
  .foundation-transport .foundation-timer,.foundation-transport #foundation-music-time{max-width:82px;font-size:11px;overflow-wrap:break-word}
  .foundation-transport>button.primary{max-width:none}
  .foundation-actions{display:grid;grid-template-columns:1fr;gap:9px;margin:16px 0}
  .foundation-actions button{width:100%;min-width:0;font-size:14px;min-height:52px}
  .foundation-secondary-tools{gap:7px;padding-inline:6px}
  .foundation-secondary-tools button{flex:1;min-width:145px;font-size:12px}
  .foundation-playing .foundation-context{grid-template-columns:1fr;gap:8px;padding:14px 16px}
  .foundation-playing .foundation-context>div+div,.foundation-playing .foundation-context>article+article{padding-top:8px}
  .foundation-playing .foundation-context h2,.foundation-playing .foundation-context h3{font-size:13px}
  .foundation-playing .foundation-coach{padding:13px 17px}
  .foundation-playing .foundation-coach h2{font-size:18px;margin-bottom:5px}
  .foundation-playing .foundation-coach p{font-size:13px}
  .foundation-playing .foundation-workbench{padding-top:14px}
}
@media(max-width:380px){
  .foundation-introduction h1,.foundation-hero h1{font-size:27px}
  .foundation-heading h1{font-size:24px}
  .foundation-lesson-list>button,.foundation-lesson-card{padding:14px 12px;gap:8px}
  .foundation-prompt h2,.foundation-prompt h3,.foundation-prompt strong{font-size:25px}
  .foundation-prompt{padding:13px 12px;gap:8px}
  .foundation-result-stats strong,.foundation-stats strong{font-size:22px}
  .foundation-controls select{font-size:12px}
}
@media(prefers-reduced-motion:reduce){
  .foundation-playing .foundation-board-scroll{scroll-behavior:auto}
  .foundation-lesson-list>button:hover:not(:disabled),.foundation-lesson-card:hover:not(:disabled){transform:none}
}

/* CAGED introduction and comparison cards share one literal chord diagram. */
.caged-intro{margin:18px 0 22px;padding:22px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
.caged-intro h2{font-size:23px;line-height:1.4;margin:0 0 12px;color:var(--green)}
.caged-intro>p{font-size:14px;line-height:1.85;margin:10px 0}
.caged-definition{padding-left:14px;border-left:3px solid #a8b99e;color:var(--muted)}
.caged-move-example{margin:18px 0;padding:18px;background:#f2f4ea;border-radius:12px}
.caged-example-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:10px}
.caged-example-heading h3{font-size:17px;line-height:1.55;margin:0;color:var(--green)}
.caged-shift{padding:5px 9px;border:1px solid #a8b99e;border-radius:7px;background:#e5ecd9;color:var(--green);font-size:12px;font-weight:700;white-space:nowrap}
.caged-example-diagrams{display:grid;grid-template-columns:minmax(0,1fr) 34px minmax(0,1fr);gap:10px;align-items:center;max-width:620px;margin:0 auto}
.caged-example-diagrams figure{min-width:0;margin:0;text-align:center}
.caged-example-diagrams figcaption{display:flex;flex-direction:column;gap:3px;min-height:48px;font-size:13px;line-height:1.5}
.caged-example-diagrams figcaption strong{color:var(--green);font-size:14px}
.caged-example-diagrams figcaption span{font-weight:700}
.caged-move-arrow{font-size:27px;color:#617954;text-align:center}
.caged-barre-explanation{font-size:13px;line-height:1.8;margin:12px 0 0;color:var(--green)}
.caged-playing-note{color:var(--muted)}
.caged-forms{margin:18px 0 22px}
.caged-forms h3{font-size:18px;line-height:1.55;margin:0 0 8px;color:var(--green)}
.caged-tone-summary{display:flex;align-items:center;flex-wrap:wrap;gap:6px 9px;margin:8px 0 12px;font-size:13px;line-height:1.6;color:var(--green)}
.caged-tone-summary strong{font-size:12px;color:var(--muted);margin-right:3px}
.caged-tone-summary span{white-space:nowrap}
.caged-tone-summary i{font-style:normal;color:var(--muted)}
.caged-card-help,.caged-octave-note{font-size:12px;line-height:1.7;color:var(--muted);margin:8px 0 12px}
.caged-form-cards{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.caged-form-card{display:flex;flex-direction:column;align-items:stretch;min-width:0;padding:12px 9px;border:2px solid #a3b09c;border-radius:12px;background:var(--panel);color:var(--green);text-align:left;cursor:pointer;touch-action:manipulation;transition:border-color .15s,background .15s,box-shadow .15s,transform .15s}
.caged-card-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:6px;min-height:37px;font-size:13px;line-height:1.45}
.caged-card-heading strong{font-size:14px;line-height:1.45;font-weight:750;white-space:normal}
.caged-card-selection{font-size:10px;line-height:1.7;white-space:nowrap;font-weight:600;color:var(--muted)}
.caged-card-chord{font-size:16px;line-height:1.4;font-weight:750;letter-spacing:.1px}
.caged-card-shift{font-size:11px;line-height:1.6;color:var(--muted);margin-top:4px;white-space:normal}
.caged-form-card[aria-pressed=true]{border-color:var(--green);background:#edf3e5;box-shadow:inset 0 0 0 1px var(--green)}
.caged-form-card[aria-pressed=true] .caged-card-selection{color:var(--green);font-weight:750}
button.caged-form-card[aria-pressed=true]::before{content:none}
.caged-form-card:focus-visible{outline:3px solid #277baa;outline-offset:3px}
.caged-form-card:active:not(:disabled){transform:scale(.985);background:#e2ecd5;border-color:var(--green)}
.caged-form-card:disabled{opacity:.55;cursor:default;box-shadow:none;transform:none}
.caged-diagram{display:block;width:100%;max-width:240px;height:auto;margin:7px auto 0;overflow:visible;pointer-events:none}
.caged-diagram text{font-family:'Segoe UI','Yu Gothic UI',Arial,sans-serif;text-anchor:middle;pointer-events:none}
.caged-diagram .caged-role{font-size:13px;font-weight:800}
.caged-diagram .caged-note-name{font-size:10px;font-weight:650}
.caged-diagram .caged-muted{font-size:23px;font-weight:650}
.caged-diagram .caged-fret-number{font-size:12px;font-weight:650}
.caged-diagram .caged-string-label{font-size:11px;font-weight:650}
.caged-diagram .caged-tuning-label{font-size:10px;font-weight:500}
.caged-role-key{display:flex;align-items:center;flex-wrap:wrap;gap:9px 15px;margin-top:13px;font-size:12px;line-height:1.6;color:var(--muted)}
.caged-role-key>span{display:inline-flex;align-items:center;gap:6px}
.caged-role-key b{display:inline-grid;place-items:center;width:25px;height:25px;border-radius:50%;font-size:11px;line-height:1;font-weight:750}
.caged-key-root b{background:#264b38;border:2px solid #264b38;color:white}
.caged-key-third b{background:#f0ce93;border:2px solid #8a6630;color:#503616}
.caged-key-fifth b{background:#d7e8ef;border:2px solid #437e95;color:#24566b}
.caged-role-key small{flex-basis:100%;font-size:11px;line-height:1.6}
.foundation-playing .caged-intro,.foundation-playing .caged-forms{display:none}
@media(hover:hover) and (pointer:fine){
  .caged-form-card:hover:not(:disabled){border-color:var(--green);background:#edf3e5;box-shadow:0 3px 9px #23382f15;transform:translateY(-2px)}
}
@media(max-width:1000px){
  .caged-form-cards{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:760px){
  .caged-intro{margin:14px 6px 18px;padding:17px 14px}
  .caged-intro h2{font-size:21px}
  .caged-intro>p{font-size:13px;line-height:1.85}
  .caged-move-example{padding:12px;margin:14px 0}
  .caged-example-heading h3{font-size:15px}
  .caged-example-diagrams{grid-template-columns:minmax(0,1fr) 20px minmax(0,1fr);gap:4px}
  .caged-example-diagrams figcaption{font-size:12px;min-height:67px}
  .caged-example-diagrams figcaption strong{font-size:12px}
  .caged-move-arrow{font-size:20px}
  .caged-barre-explanation{font-size:12px;line-height:1.85}
  .caged-forms{margin:14px 6px 18px}
  .caged-forms h3{font-size:16px}
  .caged-form-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
  .caged-form-card{padding:12px 8px}
  .caged-card-heading{min-height:35px;font-size:12px}
  .caged-card-heading strong{font-size:13px}
  .caged-card-selection{font-size:9px}
  .caged-card-chord{font-size:15px}
  .caged-card-shift{font-size:10px}
  .caged-role-key{gap:8px 13px;font-size:11px}
}
@media(max-width:360px){
  .caged-form-cards{grid-template-columns:minmax(0,1fr)}
}
@media(prefers-reduced-motion:reduce){
  .caged-form-card{transition:none}
  .caged-form-card:hover:not(:disabled),.caged-form-card:active:not(:disabled){transform:none}
}
@media(max-width:480px){
  .caged-example-diagrams{grid-template-columns:1fr;gap:9px}
  .caged-example-diagrams figure{width:100%;max-width:260px;margin:0 auto}
  .caged-example-diagrams figcaption{min-height:0}
  .caged-move-arrow{font-size:24px;line-height:24px;transform:rotate(90deg)}
  .caged-form-card .caged-note-name{display:none}
  .caged-form-card .caged-role{font-size:20px;transform:translateY(8px)}
  .caged-tone-summary{font-size:14px;gap:6px 8px}
}

/* Timed guitar practice is a status display, with one unchanged playing task. */
.caged-practice-instructions{margin:12px 0 17px;padding:18px 20px;background:#f0f4e9;border-left:4px solid #879c77;border-radius:0 10px 10px 0}
.caged-practice-instructions h2{font-size:21px;line-height:1.6;color:var(--green);margin:8px 0}
.caged-practice-start-note{font-size:13px;line-height:1.7;color:var(--muted);margin:0 0 8px}
.caged-practice-format{font-size:12px;line-height:1.65;color:var(--muted);margin:9px 0 0}
.caged-practice-live{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.2fr);grid-template-areas:'heading heading' 'now label' 'now strip' 'timing timing' 'partial beats';gap:6px 20px;margin:10px 0;padding:12px 16px;border:1px solid #b8c7aa;border-radius:12px;background:#edf3e5;color:var(--green)}
.caged-practice-live-heading{grid-area:heading;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;line-height:1.4;font-weight:650}
.caged-practice-live-heading>span:last-child{font-size:12px;font-weight:500;color:var(--muted);white-space:nowrap}
.caged-practice-live .caged-practice-route-label{grid-area:label;align-self:end;font-size:11px;line-height:1.3;color:var(--muted);margin:0}
.caged-practice-live .caged-practice-shape-strip{grid-area:strip;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;list-style:none;padding:0;margin:0}
.caged-practice-live .caged-practice-shape-strip{grid-template-columns:repeat(var(--caged-stop-count,5),minmax(0,1fr))}
.caged-practice-shape-cell{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;padding:4px 3px 3px;border-bottom:2px solid #c0cbb7;background:#f8faf3;cursor:default}
.caged-practice-shape-letter{font-size:22px;line-height:1.1;font-weight:750}
.caged-practice-shape-status{min-height:15px;margin-top:1px;font-size:10px;line-height:1.4;color:var(--muted)}
.caged-practice-shape-cell[data-current=true]{border-bottom:4px solid var(--green);background:#dce8ce;padding-bottom:1px}
.caged-practice-shape-cell[data-current=true] .caged-practice-shape-status{color:var(--green);font-weight:750}
.caged-practice-shape-cell[data-next=true]{border-bottom-color:#83976e}
.caged-practice-shape-cell[data-ended=true]{color:#5e7251;border-bottom-color:#83976e}
.caged-practice-now{grid-area:now;align-self:center;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:14px;margin:0}
.caged-practice-now>div{min-width:0}
.caged-practice-label{display:block;font-size:10px;line-height:1.4;color:var(--muted);margin-bottom:2px}
.caged-practice-now strong{display:block;font-size:24px;line-height:1.2;font-weight:750}
.caged-practice-root-anchor{padding-left:14px;border-left:1px solid #becbb5}
.caged-practice-root-anchor strong>span{font-size:15px;font-weight:650}
.caged-practice-root-anchor>span:last-child{display:block;font-size:12px;line-height:1.4;margin-top:2px}
.caged-practice-timing{grid-area:timing;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:3px 14px;padding-top:7px;border-top:1px solid #c0ccb5;font-size:13px;line-height:1.4;font-variant-numeric:tabular-nums}
.caged-practice-next{font-size:11px;white-space:nowrap;color:var(--muted)}
.caged-practice-next strong{font-size:16px;color:var(--green);margin-left:5px}
.caged-practice-timing #caged-practice-clock{font-size:13px;font-weight:650;min-width:142px}
.caged-practice-measures{font-size:11px;color:var(--muted);white-space:nowrap}
.caged-practice-beats{grid-area:beats;display:flex;gap:8px;align-items:center;justify-content:flex-end;margin:0}
.caged-practice-beats i{display:block;width:8px;height:8px;border:1px solid #9cae8f;border-radius:50%;background:#e6eddd}
.caged-practice-beats i.on{background:var(--green);border-color:var(--green);box-shadow:0 0 0 2px #cadbbb}
.caged-practice-live .caged-practice-partial-note{grid-area:partial;font-size:11px;line-height:1.45;color:#657755;margin:0}
.caged-practice-live[data-partial=true] .caged-practice-partial-note{font-weight:700;color:var(--green)}
.caged-practice-live[data-preparing=true] .caged-practice-next{font-weight:750;color:var(--green)}
.caged-practice-live[data-caged-practice-state=paused]{border-style:dashed}
.foundation-playing .caged-practice-start-note{display:none}
.caged-practice-workspace .foundation-scroll-help{margin-top:6px;line-height:1.4}
.caged-practice-workspace .foundation-role-legend{margin:6px 0 0;padding-top:4px}
@media(min-width:761px){
  .caged-practice-workspace .foundation-transport{margin-top:10px}
}
@media(max-width:760px){
  .caged-practice-instructions{margin:10px 6px 14px;padding:14px 15px}
  .caged-practice-instructions h2{font-size:18px;line-height:1.7}
  .caged-practice-start-note{font-size:12px}
  .caged-practice-format{font-size:11px}
  .caged-practice-live{grid-template-columns:minmax(0,1fr) 68px;grid-template-areas:'heading heading' 'label label' 'strip strip' 'now now' 'timing timing' 'partial beats';gap:5px 10px;padding:10px 12px;margin:10px 6px}
  .caged-practice-live-heading{font-size:13px;gap:8px;line-height:1.3}
  .caged-practice-live-heading>span:last-child{font-size:11px}
  .caged-practice-live .caged-practice-route-label{font-size:10px;line-height:1.3;margin:0}
  .caged-practice-live .caged-practice-shape-strip{gap:4px;margin:0}
  .caged-practice-shape-cell{padding:3px 2px 2px}
  .caged-practice-shape-letter{font-size:20px}
  .caged-practice-shape-status{font-size:10px;min-height:14px;line-height:1.3}
  .caged-practice-shape-cell[data-current=true]{padding-bottom:0}
  .caged-practice-now{gap:10px;margin:1px 0}
  .caged-practice-root-anchor{padding-left:10px}
  .caged-practice-now strong{font-size:22px}
  .caged-practice-label{font-size:10px;line-height:1.3}
  .caged-practice-root-anchor>span:last-child{font-size:12px;line-height:1.35}
  .caged-practice-timing{gap:2px 10px;padding-top:5px}
  .caged-practice-timing #caged-practice-clock{font-size:12px;min-width:0}
  .caged-practice-measures{flex-basis:100%;text-align:right;font-size:10px;line-height:1.3}
  .caged-practice-live .caged-practice-partial-note{font-size:11px;line-height:1.45;margin:0}
  .caged-practice-beats{gap:6px}
}

/* Warm coaching before playing, with one clear action and no moving decoration. */
.foundation-hero{border-radius:22px;background:linear-gradient(125deg,#fffef8 45%,#edf2e4);box-shadow:0 8px 25px #214f3d09}
.foundation-coach{border-left-color:#d49b55;border-radius:17px;background:linear-gradient(105deg,#fff8ec,#fffef8 70%)}
.foundation-coach h2::before{content:none}
.foundation-coach-copy{display:flex;align-items:flex-start;gap:15px;min-width:0}
.foundation-coach-copy>div{min-width:0}.foundation-coach-copy .nu-coach-avatar{flex:none;width:60px;height:60px}
.foundation-playing .foundation-coach-copy .nu-coach-avatar{display:none}
.foundation-coach .foundation-phase-message{color:#56694f;font-size:14px;margin-bottom:10px}
.foundation-lesson-card{border-radius:15px}
.foundation-lesson-number{background:#f5e2c1;color:#704a25}
.foundation-lesson-card:hover:not(:disabled){background:#f3f6ec}
.foundation-primary{border-radius:11px}
.foundation-controls .backing-style-choice small{max-width:280px}
@media(max-width:760px){
  .foundation-workspace{padding-bottom:38px}
  .foundation-transport:has(.backing-volume-control){flex-wrap:wrap;gap:5px 10px}
  .foundation-transport .backing-volume-control{order:3;flex-basis:100%;max-width:none;grid-template-columns:116px minmax(0,1fr);align-items:center;font-size:11px}
}

/* Major and minor share the lesson; minor uses three practical landmarks. */
.foundation-chord-family{display:flex;flex-wrap:wrap;gap:9px;margin:14px 0 18px}
.foundation-chord-family button{display:flex;align-items:center;justify-content:center;gap:12px;min-height:52px;min-width:150px;padding:10px 17px;border:2px solid #a3b09c;border-radius:10px;background:#fffef8;color:var(--green);cursor:pointer;touch-action:manipulation}
.foundation-chord-family button strong{font-size:15px}.foundation-chord-family button span{font-size:12px;color:var(--muted)}
.foundation-chord-family button[aria-pressed=true]{border-color:var(--green);background:#edf3e5;box-shadow:inset 0 0 0 1px var(--green)}
.foundation-chord-family button[aria-pressed=true]::before{content:none}
.foundation-chord-family button:focus-visible{outline:3px solid #277baa;outline-offset:3px}
.foundation-chord-family button:active:not(:disabled){background:#dce8ce;transform:scale(.985)}
.foundation-chord-family button:disabled{opacity:.5;cursor:default;box-shadow:none;transform:none}
.minor-forms .caged-form-cards{grid-template-columns:repeat(3,minmax(0,1fr))}
.minor-form-card .caged-card-heading{min-height:43px}
.minor-triad-card .caged-card-heading{min-height:49px}
.minor-triad-card .caged-card-heading strong{font-size:13px}
.minor-triad-heading{margin:22px 0 6px;font-size:17px;color:var(--green);line-height:1.5}
.caged-minor-change{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;padding:14px 16px;margin:16px 0;background:#f5edf3;border-left:3px solid #855f87;border-radius:0 8px 8px 0}
.caged-minor-change>strong{font-size:17px;color:var(--green)}.caged-minor-change>span,.caged-minor-change>b{font-size:14px;line-height:1.6}
.caged-minor-change>p{flex-basis:100%;font-size:13px;line-height:1.8;color:var(--muted);margin:0}
.caged-key-minor-third b{background:#ead7e7;border:2px solid #855f87;color:#634267}
.foundation-note[data-role='♭3'] circle{fill:#ead7e7;stroke:#855f87;stroke-width:2.5}
.foundation-note[data-role='♭3'] text{fill:#634267}
.foundation-role-legend [data-role='♭3'] i{background:#ead7e7;border-color:#855f87;color:#634267}
.minor-practice-live .caged-practice-shape-letter{font-size:16px;line-height:1.3;overflow-wrap:anywhere;text-align:center}
.minor-practice-live .caged-practice-now>div:first-child strong{font-size:18px;line-height:1.35;min-height:49px}
@media(hover:hover) and (pointer:fine){
 .foundation-chord-family button:hover:not(:disabled){background:#edf3e5;border-color:var(--green);box-shadow:0 3px 9px #23382f15;transform:translateY(-1px)}
}
@media(max-width:760px){
 .foundation-chord-family{margin-inline:6px;gap:8px}
 .foundation-chord-family button{flex:1;min-width:0;flex-direction:column;gap:3px;padding:10px 9px;min-height:60px}
 .foundation-chord-family button strong{font-size:14px}
 .minor-forms .caged-form-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
 .minor-triad-card .caged-card-heading{min-height:55px}
 .minor-triad-card .caged-card-heading strong{font-size:12px}
 .minor-practice-live .caged-practice-shape-letter{font-size:12px;line-height:1.25;min-height:30px;display:flex;align-items:center;justify-content:center}
 .minor-practice-live .caged-practice-now>div:first-child strong{font-size:15px;min-height:40px}
 .minor-practice-live .caged-practice-partial-note{font-size:10px}
}
@media(max-width:360px){.minor-forms .caged-form-cards{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.foundation-chord-family button:hover:not(:disabled),.foundation-chord-family button:active:not(:disabled){transform:none}}

/* The complete CAGED map is an overview; one role is the playing task. */
.foundation-focus{margin:14px 0;padding:14px 16px;border:1px solid #c6cfba;border-radius:12px;background:#f5f7ed}
.foundation-focus h3{font-size:15px;margin:0 0 10px}
.foundation-focus-options{display:flex;flex-wrap:wrap;gap:8px}
.foundation-focus-options button{min-height:48px;min-width:130px;border:2px solid #a3b09c;border-radius:9px;padding:10px 14px;background:#fffef8;cursor:pointer;touch-action:manipulation}
.foundation-focus-options button[aria-pressed=true]{background:#e4eed9;border-color:#285440;font-weight:700;box-shadow:inset 0 0 0 1px #285440}
.foundation-focus-options button[aria-pressed=true]::before{content:none}
.foundation-focus-options button:focus-visible,.foundation-follow-up summary:focus-visible,.foundation-follow-up button:focus-visible,.foundation-follow-up-active button:focus-visible{outline:3px solid #277baa;outline-offset:3px}
.foundation-focus-options button:disabled{opacity:.5;cursor:default}
.foundation-focus-options button:active:not(:disabled){background:#d8e5cb;transform:scale(.985)}
.foundation-focus-more{margin-top:9px}
.foundation-focus-more summary{cursor:pointer;padding:10px 2px;min-height:44px;font-size:13px}
.foundation-focus-support{margin:9px 0 0;font-size:13px;line-height:1.65;color:#56694f}
.foundation-active-play .foundation-focus{display:none}
.foundation-follow-up{margin:18px 0 24px;border:1px solid #bbc8af;border-radius:12px;background:#f7f8f1;padding:4px 16px}
.foundation-follow-up summary{cursor:pointer;min-height:52px;padding:14px 0;font-size:14px;font-weight:650;color:var(--green)}
.foundation-follow-up p,.foundation-follow-up-active p{font-size:13px;line-height:1.75;max-width:760px}
.foundation-follow-up button,.foundation-follow-up-active button{margin:4px 0 14px;min-height:48px;border:2px solid #899f7b;border-radius:9px;padding:10px 16px;background:#fffef8;cursor:pointer;touch-action:manipulation}
.foundation-follow-up-active{padding:10px 16px;margin:14px 0;border-left:3px solid #855f87;background:#f6eff5;border-radius:0 12px 12px 0}
.foundation-follow-up-active p{margin:4px 0 8px}.foundation-follow-up-active p span{display:inline-block;margin-left:12px;color:#634267}
.foundation-follow-up button:disabled,.foundation-follow-up-active button:disabled{opacity:.5;cursor:default}
.foundation-follow-up button:active:not(:disabled),.foundation-follow-up-active button:active:not(:disabled){background:#e7eddd;transform:scale(.985)}
.foundation-evidence{display:flex;flex-wrap:wrap;gap:7px 14px;margin:12px 0 16px;font-size:11px;line-height:1.5;color:#56694f}
.foundation-evidence>span{flex:1 1 180px;border-left:2px solid #c0cdaf;padding-left:9px}
.foundation-evidence strong{display:block;font-size:12px;color:var(--green)}
@media(hover:hover) and (pointer:fine){
 .foundation-focus-options button:hover:not(:disabled),.foundation-follow-up button:hover:not(:disabled),.foundation-follow-up-active button:hover:not(:disabled){border-color:#285440;background:#edf3e5}
 .foundation-follow-up summary:hover,.foundation-focus-more summary:hover{color:#285440;text-decoration:underline}
}
@media(max-width:760px){
 .foundation-focus{padding:12px;margin:10px 0}.foundation-focus-options button{flex:1;min-width:0;padding:10px 8px;font-size:13px}
 .foundation-follow-up{margin:14px 6px}.foundation-follow-up-active{margin:10px 6px;padding:10px 12px}
 .foundation-evidence{gap:7px 10px}.foundation-evidence>span{flex-basis:160px}
}
@media(prefers-reduced-motion:reduce){.foundation-focus-options button:active:not(:disabled),.foundation-follow-up button:active:not(:disabled),.foundation-follow-up-active button:active:not(:disabled){transform:none}}

/* Map inspection and spoken choice rehearsal disappear in active Music. */
.foundation-layers,.foundation-choice,.foundation-contrast{margin:14px 0;padding:14px 16px;border:1px solid #bccbb2;border-radius:12px;background:#f7f8f0}
.foundation-layers h3,.foundation-choice h3{margin:0 0 10px;font-size:16px;line-height:1.5}
.foundation-layers p,.foundation-choice p,.foundation-contrast p,.foundation-layer-reference{font-size:13px;line-height:1.75;max-width:850px}
.foundation-layer-options,.foundation-choice-options,.foundation-contrast-options{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.foundation-layers button,.foundation-choice button,.foundation-contrast button{min-height:48px;min-width:130px;padding:10px 13px;border:2px solid #8c9f7d;border-radius:10px;background:#fffef8;cursor:pointer;touch-action:manipulation;font-size:13px}
.foundation-layers button[aria-pressed=true],.foundation-choice button[aria-pressed=true],.foundation-contrast button[aria-pressed=true]{border-color:#285440;box-shadow:inset 0 0 0 1px #285440;background:#e7efda;font-weight:700}
.foundation-layers button[aria-pressed=true]::before,.foundation-choice button[aria-pressed=true]::before,.foundation-contrast button[aria-pressed=true]::before{content:none}
.foundation-layers button:disabled,.foundation-choice button:disabled,.foundation-contrast button:disabled{opacity:.5;cursor:default;box-shadow:none}
.foundation-layers button:focus-visible,.foundation-choice button:focus-visible,.foundation-contrast button:focus-visible,.foundation-contrast summary:focus-visible{outline:3px solid #277baa;outline-offset:3px}
.foundation-layers button:active:not(:disabled),.foundation-choice button:active:not(:disabled),.foundation-contrast button:active:not(:disabled){background:#d8e5cb;transform:scale(.985)}
.foundation-contrast summary{cursor:pointer;min-height:48px;display:list-item;font-size:14px;font-weight:650;line-height:1.8;padding:10px 0}
.foundation-layer-reference{padding:10px 14px;border-left:3px solid #6c8d7a;background:#edf3e9}
.foundation-note[data-layer=scale-color] circle{fill:#fafbf6;stroke:#a6b198;stroke-width:1.5}
.foundation-note[data-layer=scale-color] text{fill:#68755c}
.foundation-note[data-layer=chord-tone] circle{stroke-width:3}
.foundation-active-play .foundation-layers,.foundation-active-play .foundation-choice,.foundation-active-play .foundation-contrast{display:none}
@media(hover:hover) and (pointer:fine){.foundation-layers button:hover:not(:disabled),.foundation-choice button:hover:not(:disabled),.foundation-contrast button:hover:not(:disabled){border-color:#285440;background:#edf3e5}}
@media(max-width:760px){.foundation-layers,.foundation-choice,.foundation-contrast{padding:12px;margin:10px 0}.foundation-layers button,.foundation-choice button,.foundation-contrast button{flex:1 1 140px;min-width:0;font-size:12px}.foundation-layer-reference{padding:9px 11px}}
@media(prefers-reduced-motion:reduce){.foundation-layers button:active:not(:disabled),.foundation-choice button:active:not(:disabled),.foundation-contrast button:active:not(:disabled){transform:none}}

/* Connected learning story: two primary messages, optional supporting detail. */
.learning-intent{grid-template-columns:repeat(2,minmax(0,1fr))}.learning-intent>details{grid-column:1/-1;min-width:0}.learning-intent summary,.foundation-help>summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:650}.learning-intent details p+p{margin-top:8px}.welcome-story{padding:14px 0;color:var(--green);line-height:1.8}.foundation-context{grid-template-columns:repeat(2,minmax(0,1fr))}.foundation-help{margin:0 0 16px}.progression-basics{padding:20px;margin:16px 0;border:1px solid #bdcdbf;border-radius:14px;background:#fffef9;min-width:0}.progression-basics h2{font-size:1.2rem}.progression-basics h3{font-size:1rem;margin-bottom:6px}.progression-basics label{display:flex;align-items:center;gap:12px}.progression-basics select{min-height:44px;min-width:90px}.progression-family{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}.progression-family>div{display:grid;text-align:center;border:1px solid #d1ddce;border-radius:8px;padding:10px 4px}.progression-chart{display:flex;gap:8px;margin:14px 0}.progression-chart>div{display:grid;flex:1;min-width:0;text-align:center;border:2px solid #cad7c5;border-radius:10px;padding:10px 4px}.progression-chart strong{font-size:1.4rem}.progression-chart [aria-current=true]{border-color:#315e45;background:#e2efdc}.progression-task{font-weight:650}.progression-board{overflow-x:auto;margin-top:12px}.progression-board svg{display:block;width:100%;min-width:520px}.progression-basics details summary{min-height:44px;cursor:pointer}.progression-basics button{min-height:46px}.graduation-story-plan li{margin:8px 0;line-height:1.7}
@media(max-width:760px){.learning-intent,.foundation-context{grid-template-columns:1fr}.learning-intent>details{grid-column:auto}.progression-basics{padding:14px}.progression-family{grid-template-columns:repeat(4,minmax(0,1fr))}.progression-chart{gap:4px}.progression-chart strong{font-size:1.15rem}}

.foundation-workbench[hidden],#foundation-coach[hidden]{display:none!important}.progression-playing #foundation-context-slot{display:none}.progression-basics.is-playing>h2,.progression-basics.is-playing>p:not(.progression-task):not([role=status]),.progression-basics.is-playing>.progression-family,.progression-basics.is-playing>label,.progression-basics.is-playing>details{display:none}

/* Root-to-shape journey: same board, one task at a time. */
.cj-navigation{display:flex;justify-content:space-between;gap:1rem;align-items:end;flex-wrap:wrap}.cj-navigation label,.cj-controls label{display:grid;gap:.4rem;min-width:0}.cj-navigation select{max-width:100%;width:26rem}.cj-controls{display:flex;gap:1rem;flex-wrap:wrap;margin:1rem 0}.caged-journey{min-width:0}.caged-journey select{min-height:44px}.caged-journey button{min-height:44px;margin:.25rem}.cj-live{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;padding:1rem 0}.cj-live strong{font-size:2.4rem}.cj-clock{font-variant-numeric:tabular-nums;color:var(--muted,#516056)}.cj-board{max-width:100%;overflow-x:auto}.cj-task{max-width:65ch}.cj-hint{padding:.75rem;background:#f3f0e7;border-radius:.5rem}.caged-journey .foundation-actions{flex-wrap:wrap}.caged-journey .foundation-help{margin-top:1rem}@media(max-width:600px){.cj-navigation{display:block}.cj-navigation select{width:100%}.cj-controls{display:grid;grid-template-columns:1fr 1fr}.cj-controls label:last-child{grid-column:1/-1}.cj-live{gap:.6rem}.caged-journey button{white-space:normal}}

.caged-journey-workspace .foundation-heading{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1rem}

.cj-coursebar{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap;padding:.25rem 0 1rem}.cj-coursebar p{font-size:.82rem;letter-spacing:.04em}.caged-journey h1{font-size:clamp(1.35rem,2.5vw,1.9rem);line-height:1.35;margin:.9rem 0}.cj-task{margin:.65rem 0}.cj-coursebar .foundation-actions{margin:0}

.cj-board .foundation-board{max-height:360px}.cj-settings summary{cursor:pointer;min-height:44px;display:flex;align-items:center;color:#41614f}.cj-live{padding:.5rem 0}.caged-journey .foundation-actions{margin:.5rem 0}@media(min-width:761px){.cj-board:has(.foundation-board[data-dense="true"]){min-height:0}.cj-live strong{font-size:2rem}.cj-board .foundation-board{max-height:300px}}

@media(max-width:600px){.cj-navigation>.foundation-actions{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}.cj-navigation>.foundation-actions button{width:auto;min-width:0;margin:0;padding:.65rem .4rem}}

/* Lesson 2 Root-to-shape story; scroll the board, never the page. */
.l2-story{max-width:1100px;margin:0 auto;padding:0 22px 36px;min-width:0}.l2-story h2{font-size:clamp(1.2rem,2.5vw,1.6rem)}.l2-story h3{font-size:1.15rem}.l2-story p{line-height:1.8}.l2-tabs,.l2-options,.l2-shapes,.l2-nav,.l2-report>div{display:flex;flex-wrap:wrap;gap:8px}.l2-story button,.l2-story select,.l2-story input[type=number]{min-height:44px}.l2-tabs button{flex:1 1 170px}.l2-tabs [aria-current],.l2-story [aria-pressed=true]{background:#dcebd8;border-color:#356044}.l2-story fieldset{margin:22px 0;min-width:0;border:1px solid #d3d8cc;border-radius:12px;padding:18px}.l2-story fieldset legend{font-weight:700}.l2-compare{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px}.l2-compare>section{min-width:0}.l2-board{max-width:100%;min-width:0}.l2-story .foundation-board{max-height:400px}.l2-path,.l2-live>p:first-child{background:#edf2e6;padding:12px;border-radius:8px}.l2-variant{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:12px 0}.l2-practice{background:#fffdf6;border:1px solid #d6dbcd;border-radius:16px;padding:16px;margin-top:20px;min-width:0;scroll-margin-top:88px}.l2-transport{display:flex;gap:8px;position:sticky;top:76px;z-index:2;background:#fffdf6;padding:6px 0}.l2-transport button{flex:1}.l2-live{min-width:0}.l2-note{font-size:.9rem;color:#596353}.l2-settings{border-top:1px solid #d6dbcd;padding:12px 0}.l2-settings>label{display:flex;gap:10px;margin:12px 0;align-items:center;flex-wrap:wrap}.l2-settings select{max-width:100%}.l2-root-help{margin:22px 0;padding:12px;background:#edf2e6;border-radius:10px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}.l2-nav{margin-top:24px;justify-content:space-between}.l2-story summary{cursor:pointer;min-height:44px;display:flex;align-items:center}.l2-story details{min-width:0}.l2-story .l2-play-strings{overflow-wrap:anywhere}.l2-intro{max-width:1100px;margin:12px auto;padding:0 22px}.l2-story .l2-settings .backing-style-choice{display:flex;flex-wrap:wrap;gap:8px}
@media(max-width:600px){.l2-story{padding:0 14px 28px}.l2-compare{grid-template-columns:minmax(0,1fr)}.l2-tabs button{flex-basis:42%;font-size:.8rem}.l2-practice{padding:10px}.l2-transport{top:68px}.l2-transport button{font-size:.8rem;padding:10px 5px}.l2-story .foundation-board{max-height:none}.l2-report>div button{width:100%}.l2-variant select{width:100%}.l2-nav>.primary{width:100%}.l2-shapes button{flex:1 1 28%}.l2-settings input{max-width:100%}}

/* Lesson 2 Page 2: familiar open forms and their exact short-distance moves. */
.l2-open-map{min-width:0}.l2-open-gallery{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:20px 0 28px}.l2-open-prototype{margin:0;background:#fffdf7;border:1px solid #d8ddcf;border-radius:12px;padding:12px 4px;text-align:center;min-width:0}.l2-open-prototype p{font-size:.82rem;line-height:1.5;margin:4px}.l2-open-diagram{display:block;width:100%;max-width:184px;height:auto;margin:8px auto;overflow:visible}.l2-open-grid line{stroke:#b6c0b4;stroke-width:1}.l2-open-grid text{fill:#53604f;font:10px system-ui;text-anchor:middle}.l2-open-nut{stroke:#354237;stroke-width:5}.l2-open-dot circle{fill:#fff;stroke:#536751;stroke-width:2}.l2-open-dot.is-root circle{fill:#315943;stroke:#315943}.l2-open-dot text{fill:#fff;text-anchor:middle;font:bold 11px system-ui}.l2-open-dot text.l2-open-r{font-size:8px}.l2-open-dot.is-landmark circle{fill:#fafcf7;stroke:#718373;stroke-dasharray:3 2}.l2-open-dot.is-landmark text{fill:#526b56}.l2-open-finger{fill:#e6f0fa;stroke:#3273aa;stroke-width:2}.l2-open-mute{fill:#687360;text-anchor:middle;font:15px system-ui}.l2-open-nut-note{padding:18px 22px;border-left:4px solid #6d8a70;background:#edf2e8;border-radius:4px 12px 12px 4px}.l2-open-nut-note h3{margin-top:0}.l2-open-nut-note p{margin-bottom:12px}.l2-open-nut-key{display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:.9rem}.l2-open-nut-key span{display:flex;gap:8px;align-items:center}.l2-open-nut-key i{display:inline-block;flex-shrink:0}.l2-open-nut-key .nut{width:27px;height:5px;background:#354237}.l2-open-nut-key .finger{width:19px;height:19px;border:2px solid #3273aa;border-radius:50%;background:#e6f0fa}.l2-open-exercise{margin-top:30px}.l2-open-picker{display:flex;flex-wrap:wrap;gap:7px;position:sticky;top:76px;background:#f7f8f1;padding:10px 0;z-index:2}.l2-open-picker button{flex:1;min-width:70px;padding:8px}.l2-open-route{background:#e8eee0;border-radius:10px;padding:14px;margin:10px 0 16px}.l2-open-route>span{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;text-align:center;gap:4px;margin-top:8px}.l2-open-route strong{font-size:1.5rem;grid-row:1}.l2-open-route small{font-size:.8rem;grid-row:2}.l2-open-route strong:nth-of-type(1),.l2-open-route small:nth-of-type(1){grid-column:1}.l2-open-route strong:nth-of-type(2),.l2-open-route small:nth-of-type(2){grid-column:3}.l2-open-route strong:nth-of-type(3),.l2-open-route small:nth-of-type(3){grid-column:5}.l2-open-route i{font-style:normal;grid-row:1}.l2-open-route i:nth-of-type(1){grid-column:2}.l2-open-route i:nth-of-type(2){grid-column:4}.l2-open-moves{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.l2-open-move{background:#fffdf7;border:1px solid #d1daca;border-radius:14px;padding:16px;min-width:0}.l2-open-card-head h4{font-size:1.15rem;margin:8px 0}.l2-open-card-head p{font-size:.9rem;line-height:1.6;margin:6px 0}.l2-open-stage{color:#526b47;font-size:.75rem;font-weight:700;letter-spacing:.08em}.l2-open-root{background:#edf2e7;padding:8px;border-radius:7px;font-size:.9rem}.l2-open-move .l2-note{font-size:.85rem;line-height:1.6;min-height:4.8em}.l2-open-move details{border-top:1px solid #dbe2d3;font-size:.85rem;overflow-wrap:anywhere}.l2-open-summary{margin-top:28px;padding-top:8px;border-top:1px solid #d3dccc}.l2-open-summary h3{margin-top:22px}
@media(max-width:900px){.l2-open-gallery{grid-template-columns:repeat(3,minmax(0,1fr))}.l2-open-moves{gap:8px}.l2-open-move{padding:12px}}
@media(max-width:600px){.l2-open-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.l2-open-picker{top:68px}.l2-open-picker button{min-width:0;font-size:.8rem}.l2-open-moves{grid-template-columns:minmax(0,1fr);gap:16px}.l2-open-move{padding:18px}.l2-open-move .l2-note{min-height:0}.l2-open-nut-note{padding:14px}.l2-open-nut-key{gap:10px}.l2-open-route{padding:10px}.l2-open-route small{font-size:.72rem}}

/* Local Batch A follows the Lesson 1/2 page rhythm. */
.ba-story label{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:14px 0}.ba-story select{max-width:100%}.ba-instruction{max-width:75ch;font-size:1.05rem}.ba-choices{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.ba-choices button{min-width:70px}.ba-practice{background:#fffdf7;border:1px solid #d4ddce;border-radius:16px;padding:18px;margin-top:20px;scroll-margin-top:80px;min-width:0}.ba-transport{position:sticky;top:76px;display:flex;gap:8px;flex-wrap:wrap;padding:8px 0;background:#fffdf7;z-index:3}.ba-transport button{flex:1 1 130px}.ba-current,.ba-next{background:#edf2e6;border-radius:9px;padding:12px}.ba-next[data-ba-prepare=true]{background:#ffe8b8;border:2px solid #9b7027}.ba-compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.ba-compare>section{min-width:0}.ba-board{max-width:100%;min-width:0}.ba-story .foundation-board{max-height:390px}.ba-progression{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;padding:0;list-style:none}.ba-progression li{border:1px solid #d2ddc8;border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:5px}.ba-progression b{font-size:1.2rem}.ba-progression small{font-size:.8rem}.ba-practice details{border-top:1px solid #d9e0d1;margin-top:14px}.ba-practice .backing-style-choice{display:flex;gap:8px;flex-wrap:wrap}.ba-practice summary{cursor:pointer;min-height:44px;display:flex;align-items:center}
@media(max-width:600px){.ba-compare{grid-template-columns:minmax(0,1fr)}.ba-practice{padding:10px}.ba-transport{top:68px}.ba-transport button{flex-basis:40%;font-size:.83rem;padding:10px 6px}.ba-progression{grid-template-columns:repeat(2,minmax(0,1fr))}.ba-story .foundation-board{max-height:none}}

/* L3 static comparisons: both qualities stay visible, including narrow screens. */
.l3-open-pair-section{margin:24px 0 32px}.l3-open-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;max-width:620px;margin:16px auto}.l3-open-pair figure{min-width:0;margin:0;padding:14px 10px;border:1px solid #d3d8cc;border-radius:12px;background:#fffdf7;text-align:center}.l3-open-pair h4{margin:0;font-size:1.15rem}.l3-open-pair figcaption p{margin:5px 0 8px}.l3-open-pair .l2-open-diagram{display:block;width:100%;max-width:184px;height:auto;margin:auto}.l3-open-pair .l2-open-dot.is-third circle{fill:#b48446;stroke:#795b32;stroke-width:2}.l3-open-pair .l3-open-third-name{fill:#fff;font-size:12px;font-weight:700;text-anchor:middle}.l3-third-caption{margin:8px 0 0;line-height:1.5!important}.l3-third-caption b{color:#795b32}
@media(max-width:600px){.l3-open-pair{gap:10px}.l3-open-pair figure{padding:10px 4px}.l3-open-pair h4{font-size:1rem}.l3-open-pair figcaption p,.l3-third-caption{font-size:.85rem}.l3-story[data-l3-step="compare"] .l2-transport{flex-wrap:wrap;position:static}.l3-story[data-l3-step="compare"] .l2-transport button{flex-basis:42%}}

/* Lesson 3 Page 2: one Minor Open diagram per CAGED shape. */
.l3-minor-map-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px 10px;margin:22px 0}.l3-minor-card .l2-open-card-head h4{margin:8px 0;font-size:1rem}.l3-minor-card .l2-open-root{margin:8px 4px}.l3-minor-card .l3-minor-play{font-size:.78rem;line-height:1.6;margin:8px 4px}.l3-minor-open-map .l2-open-dot.is-third circle{fill:#b48446;stroke:#795b32;stroke-width:2}.l3-minor-open-map .l3-open-third-name{fill:#fff;font-size:12px;font-weight:700;text-anchor:middle}.l3-practical-outline{fill:#dfead444;stroke:#356044;stroke-width:2;stroke-dasharray:5 4;pointer-events:none}.l3-open-context{opacity:.35}.l3-open-context circle{r:7px}.l3-open-context text{display:none}.l3-minor-card .l3-grip-status{min-height:40px}.l3-minor-route{background:#e8eee0;border-radius:10px;padding:14px;margin:10px 0 16px}.l3-minor-route>span{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;text-align:center;gap:4px;margin-top:8px}.l3-minor-route strong{grid-row:1;font-size:1.5rem}.l3-minor-route small{grid-row:2;font-size:.8rem}.l3-minor-route strong:nth-of-type(1),.l3-minor-route small:nth-of-type(1){grid-column:1}.l3-minor-route strong:nth-of-type(2),.l3-minor-route small:nth-of-type(2){grid-column:3}.l3-minor-route strong:nth-of-type(3),.l3-minor-route small:nth-of-type(3){grid-column:5}.l3-minor-route i{grid-row:1;font-style:normal}.l3-minor-route i:nth-of-type(1){grid-column:2}.l3-minor-route i:nth-of-type(2){grid-column:4}
@media(max-width:1000px){.l3-minor-map-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:600px){.l3-minor-map-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 8px}.l3-minor-card .l2-open-stage{font-size:.65rem}.l3-minor-card .l2-open-card-head h4{font-size:.9rem}.l3-minor-route{padding:10px}.l3-minor-route small{font-size:.72rem}}

.l3-minor-open-map .l2-open-picker button{min-width:44px}
@media(max-width:380px){.l3-minor-open-map .l2-open-picker{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}}

.l3-third-original{fill:#fffdf7;stroke:#946a36;stroke-width:2;stroke-dasharray:3 2}.l3-third-arrow,.l3-third-arrow-head{fill:none;stroke:#946a36;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.l3-third-change{font-size:.85rem;font-weight:650;color:#795b32;margin:8px 4px}

/* Shared L2/L3: full Shape references with a fixed practical playing area. */
.foundation-practice-region{fill:#d9e7cb35;stroke:#356044;stroke-width:3;stroke-dasharray:7 5}.lesson-caged-board .is-shape-reference{opacity:.42}.lesson-caged-board .is-shape-reference.root{opacity:.72}

.lesson-caged-board .foundation-cell:not([data-practice-note]) .foundation-note{display:none}

/* Local Lesson 4: one stable, read-only 3–8F mid area. */
.l4-mid-board .foundation-board{min-width:0;width:100%;max-width:760px;height:auto}.l4-mid-board .foundation-fret-label,.l4-mid-board .foundation-string-label{font-size:21px}.l4-mid-board .foundation-note text{font-size:21px}.l4-mid-board .foundation-note .role-label{font-size:13px}.l4-mid-board{min-width:0}.l4-open-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0}.l4-open-gallery figure{margin:0;border:1px solid #d3d8cc;border-radius:12px;padding:12px;background:#fffdf7;text-align:center}.l4-open-gallery p{font-size:.85rem}.l4-range{font-size:1.2rem;font-weight:700;color:#315943}.l4-search{padding:20px 0;border-bottom:1px solid #d5dccd}.l4-search>button{min-height:44px;padding:10px 16px}.l4-chords{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:16px 0}.l4-chords>div,.l4-chords>button{padding:12px 6px;text-align:center;border:1px solid #bdcdb7;border-radius:8px;font-size:1.2rem;background:#fffdf7;min-height:44px}.l4-chords [aria-current=true],.l4-chords [aria-pressed=true]{background:#315943;color:#fff;border-color:#315943;font-weight:700}.l4-now{display:flex;justify-content:space-between;align-items:baseline;gap:12px}.l4-now h3{margin:8px 0}.l4-shape-guide>h3{margin-top:20px}.l4-frets{font-size:.85rem}.l4-live .l4-chords{position:static}
@media(max-width:600px){.l4-open-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.l4-chords{gap:5px}.l4-chords>div,.l4-chords>button{font-size:1rem;padding:10px 4px}.l4-now{align-items:center}.l4-now p{font-size:.85rem}.l4-mid-board .foundation-board{min-width:0!important}.l4-search{padding-top:12px}}

.l4-chords>button[aria-pressed="true"]:hover,.l4-chords>button[aria-pressed="true"]:focus-visible{background:#315943;color:#fff}

/* Lesson 4 uses the familiar vertical diagrams, with all four chords visible. */
.l4-voicing-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0}.l4-voicing-gallery.l4-two-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.l4-voicing-card{min-width:0;border:1px solid #d3d8cc;border-radius:12px;padding:12px;background:#fffdf7;text-align:center}.l4-voicing-card[aria-current=true]{border:2px solid #315943;background:#f1f5e9}.l4-voicing-card h3{font-size:1rem;margin:0 0 8px}.l4-voicing-card p{font-size:.85rem}.l4-voicing-card .l2-open-diagram{width:100%;max-width:184px;height:auto}.l4-voicing-card button{min-height:44px;width:100%;padding:8px}.l4-voicing-card .l4-frets{line-height:1.8}.l4-voicing-card .l3-open-context{opacity:.32}
@media(max-width:700px){.l4-voicing-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.l4-voicing-card{padding:8px}.l4-voicing-card h3{font-size:.9rem}.l4-voicing-card p{font-size:.8rem}}

.l4-live[data-l4-highlight=true] .l4-voicing-card:not([aria-current=true]) .l2-open-diagram{opacity:.4}.l4-live[data-l4-highlight=true] .l4-voicing-card[aria-current=true] .l2-open-diagram{background:#e5efdc;border-radius:8px}.l4-live[data-l4-highlight=true] .l4-voicing-card[aria-current=true] .l2-open-dot:not(.is-landmark) circle{fill:#315943;stroke:#315943}

/* Lesson 6: one fixed 5–8F map, single-note choices rather than full-grip practice. */
.l6-board{max-width:560px;margin:16px auto;background:#fffdf7;border:1px solid #d3d8cc;border-radius:12px;padding:8px}.l6-board .foundation-board{width:100%;min-width:0!important;max-width:760px;height:auto}.l6-board .foundation-note:not([data-layer]){display:none}.l6-board .foundation-fret-label,.l6-board .foundation-string-label{font-size:21px}.l6-board[data-l6-mode=pentatonic] .foundation-note circle{fill:#fffdf7;stroke:#315943;stroke-width:3}.l6-board[data-l6-mode=chord-tones] .foundation-note circle{fill:#315943;stroke:#315943}.l6-board[data-l6-mode=chord-tones] .foundation-note text:not(.role-label){fill:white;font-size:18px}.l6-board .foundation-note .role-label{font-size:13px;fill:#315943}.l6-progression{grid-template-columns:repeat(var(--l6-chord-count),minmax(0,1fr))}.l6-mode{color:#315943}.l6-board .foundation-practice-region{fill:#e5efdc;fill-opacity:.35;stroke:#315943;stroke-dasharray:6 4;stroke-width:2}

.l6-board .foundation-note.is-shape-reference{opacity:.32}

/* Optional Song Practice is independent of lesson completion and Practice Jam. */
.song-practice{max-width:1000px;margin:1rem auto;padding:clamp(1rem,3vw,2rem)}
.song-settings,.song-transport,.song-chords{display:flex;gap:.7rem;flex-wrap:wrap;margin:1rem 0}
.song-settings label{display:grid;gap:.3rem;min-width:0}.song-input{flex:1 1 240px}.song-settings input,.song-settings select{max-width:100%;min-height:44px}.song-chords button{display:grid;min-width:65px;min-height:58px}.song-chords [aria-current=true]{background:#285b43;color:white}.song-chords small{display:block}.song-board{max-width:650px;overflow:auto}.song-board svg{width:100%;min-width:0!important}.song-board .foundation-note:not([data-layer]){display:none}.song-board .foundation-note.is-shape-reference{opacity:.35}.song-practice li{margin:.7rem 0}.song-entry{margin:1rem 0;border-inline-start:4px solid #4c7b61}.song-practice button{min-height:44px}.song-practice p{line-height:1.7}.song-practice h1{overflow-wrap:anywhere;font-size:clamp(1.5rem,4vw,2.3rem)}

/* Musical CAGED: same four-card contract as position lessons, fixed lesson presets. */
.l7-page{padding:clamp(1rem,3vw,1.8rem)}.l7-chords small{display:block;font-weight:400}.l7-transport,.l7-next{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap;margin:1rem 0}.l7-transport button,.l7-next button{min-height:44px}.l7-next{justify-content:space-between}.l7-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.6rem}.l7-gallery article{min-width:0}.l7-gallery svg{width:100%;height:auto}.l7-gallery:has([aria-current=true]) article:not([aria-current=true]){opacity:.48}.l7-gallery [aria-current=true]{border-color:#326a4d;background:#e4eee4}.l7-melody-board{max-width:650px}.l7-melody-board svg{width:100%;min-width:0!important}.l7-melody-board .foundation-note:not([data-layer]){display:none}.l7-melody-board [data-layer=l7-penta] circle{fill:transparent!important;stroke:#718c79!important;opacity:.35}.l7-melody-board [data-layer=l7-penta] text{display:none}.l7-melody-board .foundation-note.is-shape-reference[data-layer=l7-tone]{opacity:.5}.l7-melody-board [data-layer=l7-tone] circle{fill:#326a4d!important;stroke:#326a4d!important}.l7-melody-board [data-layer=l7-tone] text{fill:white!important}
@media(max-width:600px){.l7-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.l7-gallery h3{font-size:.95rem}.l7-gallery p{font-size:.8rem}}

/* Show one four-bar phrase once; repeated audio uses the same eight cells. */
.l7-chords{display:grid!important;grid-template-columns:repeat(8,minmax(0,1fr));gap:.3rem!important}.l7-chords>div{min-width:0;padding:.5rem .15rem}.l7-chords b{font-size:clamp(.75rem,2.5vw,1rem)}.l7-chords small{font-size:.65rem}@media(max-width:600px){.l7-chords{grid-template-columns:repeat(8,minmax(0,1fr))}}

.l7-gallery .l7-roman{text-transform:none}

/* Local Lesson 8 uses shared fretboards and step navigation. */
.l8-page{padding:clamp(1rem,3vw,1.8rem)}.l8-board{overflow-x:auto;max-width:100%;margin:1rem 0}.l8-board svg{width:100%;min-width:560px}.l8-board .foundation-cell{cursor:default}.l8-board .foundation-note[data-role=""] circle{opacity:.2}.l8-target{text-align:center;margin:1rem 0}.l8-target span{display:block;font-size:.8rem}.l8-target strong{font-size:clamp(3rem,8vw,5rem);color:#23563e}.l8-target p,.l8-phase{text-align:center}.l8-phase{min-height:3em}.l8-controls,.l8-next{display:flex;gap:.6rem;flex-wrap:wrap;margin:1rem 0}.l8-next{justify-content:space-between}.l8-controls button,.l8-next button{min-height:44px}.l8-progression{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:.2rem}.l8-progression span{text-align:center;border:1px solid #b8c7b0;border-radius:.4rem;padding:.5rem .1rem;min-width:0}.l8-progression small{display:block}.l8-progression [aria-current]{background:#23563e;color:white}.l8-answers{font-size:.85rem;overflow-wrap:anywhere}.l8-status{font-size:.85rem}

.l8-story [data-l8-live]{scroll-margin-top:90px}

/* Local Lesson 9 only: current triad and a quiet dashed NEXT Root. */
.l9-page{max-width:1120px;margin:0 auto}.l9-page p{line-height:1.7}.l9-board{overflow-x:auto;max-width:100%;overscroll-behavior-x:contain}.l9-board .foundation-board{width:100%;min-width:var(--foundation-board-min-width)}.l9-target{text-align:center}.l9-target>strong{display:block;font-size:3.5rem;color:#285d48}.l9-controls,.l9-next{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}.l9-controls button,.l9-next button{min-height:44px}.l9-next{justify-content:space-between}.l9-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.l9-gallery article{min-width:0;border:1px solid #c9d0bd;border-radius:14px;padding:10px}.l9-gallery .foundation-board{min-width:0!important}.l9-gallery h3{margin:.3em 0}.l9-gallery p{font-size:.82rem}.l9-board [data-layer="reference"]{opacity:.28}.l9-board [data-layer="next"] circle{fill:#faf9f1;stroke:#967445;stroke-width:2.5;stroke-dasharray:4 3}.l9-board [data-layer="next"] text{fill:#755a33}.l9-board [data-layer="current-next"] circle{stroke:#967445;stroke-width:4;stroke-dasharray:5 3}.l9-now-next{display:flex;justify-content:center;gap:clamp(25px,8vw,100px);padding:15px}.l9-now-next>div{display:flex;flex-direction:column;align-items:center}.l9-now-next strong{font-size:2.3rem;color:#285d48}.l9-now-next>div+div strong{color:#80603a}.l9-progression{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:4px}.l9-progression span{display:flex;flex-direction:column;text-align:center;padding:6px 0;border:1px solid #c9d0bd;border-radius:7px}.l9-progression [aria-current]{background:#285d48;color:white}.l9-root-prep{display:flex;gap:12px;flex-wrap:wrap;font-size:.9rem}.l9-story [data-l9-live]{scroll-margin-top:95px}.l9-next-address{color:#80603a}@media(max-width:600px){.l9-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.l9-gallery .foundation-board .foundation-string-label,.l9-gallery .foundation-board .foundation-fret-label{font-size:22px}.l9-gallery .foundation-board text{font-size:25px}.l9-page{padding:16px}.l9-now-next{gap:45px}}

.l9-gallery .l2-open-diagram{display:block;width:100%;max-width:184px;height:auto;margin:auto}.l9-gallery [data-layer="reference"]{opacity:.28}.l9-gallery .l2-open-dot text{fill:#244f40}.l9-gallery .l2-open-dot.is-root text{fill:white}

.l9-board [data-layer="first-root"] circle{fill:#245d46;stroke:#173e2e;stroke-width:3}.l9-board [data-layer="first-root"] text{fill:#fff;font-weight:800}

.l9-board [data-layer="caged-reference"] circle{fill:transparent;stroke:#66806c;stroke-width:2;opacity:.7}.l9-board [data-layer="caged-reference"] text{display:none}

/* Local Lesson 10: NOW is playable, NEXT is preparation only, in separate labelled panels. */
.l10-page{max-width:1120px;margin:auto;min-width:0}.l10-panels{display:grid;grid-template-columns:1fr 1fr;gap:18px}.l10-panels>section{min-width:0;border:1px solid #c3cdbd;border-radius:14px;padding:14px}.l10-panels h3{margin-top:0}.l10-next-target{border-style:dashed!important;background:#fcf8ed}.l10-cue{font-size:clamp(1.3rem,2.5vw,1.9rem);font-weight:800;color:#8a4d13;line-height:1.4;min-height:2.8em}.l10-cue.is-landing{color:#245d46}.l10-next-note{font-weight:800;font-size:1.5rem}.l10-wait{font-weight:700;color:#765a35}.l10-board{overflow-x:auto;max-width:100%;overscroll-behavior-x:contain}.l10-board .foundation-board{width:100%;min-width:var(--foundation-board-min-width)}.l10-board [data-layer="parent"] circle{fill:none;stroke:#728773;stroke-width:2}.l10-board [data-layer="parent"] text{display:none}.l10-third-focus [data-layer="context"]{opacity:.28}.l10-third-focus [data-layer="root"]{opacity:.55}.l10-board [data-layer="target-third"] circle{fill:#f2b84b;stroke:#7e4716;stroke-width:4}.l10-board [data-layer="target-third"] text{fill:#402905;font-weight:900}.l10-position{font-size:.9rem}.l10-controls,.l10-next{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}.l10-controls button,.l10-next button{min-height:44px}.l10-next{justify-content:space-between}.l10-progression{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:4px}.l10-progression span{text-align:center;border:1px solid #cad2c0;border-radius:6px;padding:6px 0;display:flex;flex-direction:column}.l10-progression [aria-current]{background:#245d46;color:white}@media(max-width:700px){.l10-panels{grid-template-columns:1fr}.l10-page{padding:16px}.l10-cue{font-size:1.4rem}}

.l10-story [data-l10-live]{scroll-margin-top:90px}@media(max-width:700px){.l10-now .l10-board{display:none}.l10-now .l10-position{margin-bottom:0}.l10-panels{gap:12px}}

@media(max-width:700px){.l10-story [data-l10-live]{scroll-margin-top:140px}}