@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;600;700;800&display=swap');
:root{--ink:#203b35;--muted:#718078;--paper:#f6f5ef;--green:#244f41;--line:#dadfd5;--M:#e4bc71;--A:#9dc4b2;--T:#b7b4d7;--H:#e5aa94;--O:#98c4d4}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px 'DM Sans',sans-serif}.shell{max-width:1600px;margin:auto;padding:0 5%}header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{font:800 29px Manrope,sans-serif;letter-spacing:3px;text-decoration:none;color:var(--ink)}.brand>span{color:#b38432}.brand small{display:block;font:600 9px 'DM Sans',sans-serif;letter-spacing:2.6px;margin-top:4px}.header-actions{display:flex;gap:14px;align-items:center}button,.import-button{font:600 13px 'DM Sans',sans-serif;border:1px solid #cdd5ca;background:transparent;color:var(--ink);border-radius:8px;padding:12px 16px;cursor:pointer}button:hover,.import-button:hover{background:#e7ebe1}button:disabled{opacity:.45;cursor:default}button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #bb8731;outline-offset:3px}.status{font-size:12px;color:#597c64}.intro{display:flex;justify-content:space-between;align-items:center;margin:42px 0 28px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px}h1{font:600 clamp(25px,2.6vw,40px) Manrope,sans-serif;letter-spacing:-1.4px;margin:10px 0}p{color:var(--muted);line-height:1.6}.intro p{margin:8px 0}.progress{text-align:right;display:grid;gap:3px}.progress strong{font:600 44px Manrope}.progress span{color:var(--muted);font-size:12px}.play-area{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:24px}.current{background:#fff;border:1px solid var(--line);border-radius:16px;min-height:355px;padding:25px 32px;display:flex;flex-direction:column}.card-top{display:flex;justify-content:space-between;align-items:center}.card-top>span:last-child{font-size:12px;color:var(--muted)}.hero-math{min-height:165px;display:flex;gap:24px;align-items:center;justify-content:center;font-size:clamp(25px,3.4vw,54px);overflow:auto}.empty-title{font:600 30px Manrope;letter-spacing:-1px;color:#809083}.letter-badge{display:inline-flex;align-items:center;justify-content:center;background:var(--accent);color:var(--ink);width:64px;height:72px;border-radius:12px;font:800 42px Manrope;flex-shrink:0}#currentHint{text-align:center;color:var(--muted);font-size:13px;margin:0 0 20px}#answerArea{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #e5e8e0;padding-top:17px;margin-top:auto}#answerArea>span{font-size:10px;letter-spacing:1px;color:#6f7e72}#answerMath{font-size:25px}aside{border-radius:16px;background:#e9eddf;padding:27px}h2{font:600 22px Manrope;letter-spacing:-.6px;margin:10px 0}aside h2{font-size:23px}aside p{font-size:13px}aside label{font-size:11px;font-weight:700;display:block;margin:20px 0 8px}select{width:100%;padding:12px;border:1px solid #cfd7c8;border-radius:7px;background:#f8faf4;color:var(--ink);font:14px 'DM Sans'}.primary{display:flex;justify-content:space-between;background:var(--green);color:white;width:100%;padding:16px;margin-top:12px;border:0;font-size:15px}.primary:hover{background:#32664f}#remaining{text-align:center;font-size:11px}.small-actions{display:flex;justify-content:space-between;gap:4px}.small-actions button{padding:8px;border:0;font-size:11px}.tip{border-top:1px solid #d4dcc9;padding-top:16px;margin-bottom:0;font-size:11px}.history-section{margin:40px 0 30px}.section-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.section-heading>span{font-size:12px;color:var(--muted)}.board{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.column{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}.column-head{background:var(--accent);display:flex;justify-content:space-between;align-items:center;padding:14px 17px}.column-head strong{font:800 27px Manrope}.column-head span{font-size:10px}.column-calls{padding:8px 14px;min-height:130px}.history-item{padding:16px 0;border-bottom:1px solid #e9ece6;overflow:auto}.history-item:last-child{border-bottom:0}.history-item.newest{background:#f5f7f0}.history-question{font-size:18px;white-space:nowrap}.history-answer{font-size:14px;color:#657b69;margin-top:9px}.call-index{font-size:9px;color:#7c897e;margin-bottom:8px}.no-calls{color:#99a396;text-align:center;font-size:12px;margin:40px 0}details{border:1px solid var(--line);border-radius:12px;padding:20px;background:#fff}summary{cursor:pointer;font-weight:700}#bankCount{color:var(--muted);font-weight:400;margin-left:10px}.edit-label{float:right;font-size:12px;font-weight:400}.bank-intro{font-size:13px}.notice{background:#fff3db;border-radius:8px;padding:13px;font-size:13px;margin:12px 0;line-height:1.6}.bank-row{display:grid;grid-template-columns:48px 1fr 1fr 80px;gap:12px;padding:16px 0;border-bottom:1px solid var(--line);align-items:center}.bank-row input[type=text]{width:100%;padding:10px;border:1px solid #cfd7ca;border-radius:6px;font:13px monospace}.bank-row label{font-size:11px;color:#758371}.bank-row .preview{padding:8px 0;font-size:18px;overflow:auto}.bank-note{grid-column:2 / -1;font-size:12px;color:#96622c}.bank-actions{display:flex;gap:12px;margin-top:20px}.import-button{display:inline-block}footer{margin:38px 0 24px;font-size:12px;letter-spacing:2px;font-weight:700;display:flex;justify-content:space-between;color:#768574}footer span{font-size:11px;letter-spacing:0;font-weight:400}#message{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#244f41;color:white;border-radius:8px;padding:12px 20px;display:none;max-width:90vw}.display #controls,.display #answerArea,.display #bankSection,.display #openDisplay,.display .history-answer,.display .status{display:none}.display .play-area{grid-template-columns:1fr}.display .current{min-height:320px}.display .hero-math{font-size:clamp(40px,5vw,85px);min-height:190px}.display .history-question{font-size:clamp(16px,1.8vw,30px)}.display .intro{margin:26px 0 20px}.display .intro h1{font-size:28px}.display .history-section{margin-top:28px}.display .column-calls{max-height:none}.display .current #currentHint{margin-bottom:0}mjx-container{margin:0!important}@media(max-width:850px){.status{display:none}.play-area{grid-template-columns:1fr}.board{gap:5px}.column-calls{padding:5px}.column-head{padding:10px}.history-question{font-size:13px}.shell{padding:0 3%}.bank-row{grid-template-columns:35px 1fr 1fr 45px}.header-actions button{padding:9px;font-size:11px}.hero-math{font-size:30px}.letter-badge{width:45px;height:55px;font-size:30px}.intro h1{font-size:25px}}
/* Give each column enough room for expressions on smaller screens. */
.small-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.small-actions button{min-height:44px;font-size:12px}#reset{border:1px solid #aebca3;background:#f8faf4;font-weight:700}#reset:hover{background:#fff}.current,.intro>div,.section-heading>div,.bank-row>div{min-width:0}
@media(max-width:1000px){.board{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.column-calls{padding:10px 16px}.history-question,.display .history-question{font-size:20px}.column-head{padding:14px 17px}}
@media(max-width:650px){header{height:auto;min-height:100px;padding:20px 0;flex-wrap:wrap;gap:18px}.header-actions{flex-wrap:wrap;gap:8px}.intro{gap:16px;align-items:flex-start}.progress strong{font-size:32px}.progress span{max-width:80px}.current{padding:20px;min-height:300px}.hero-math,.display .hero-math{font-size:30px;gap:16px}.board{grid-template-columns:repeat(2,minmax(0,1fr))}.section-heading{flex-wrap:wrap;align-items:flex-start;gap:10px}.section-heading h2{line-height:1.35}.history-section{margin-top:30px}.bank-row{grid-template-columns:40px minmax(0,1fr);gap:10px}.bank-row>div{grid-column:2}.bank-row>label{grid-column:2;min-height:44px;display:flex;align-items:center}.bank-note{grid-column:2}.edit-label{float:none;display:block;margin-top:10px}#bankCount{display:block;margin:8px 0 0}.bank-actions{flex-wrap:wrap}footer{gap:16px;flex-wrap:wrap}}
@media(max-width:440px){.board{grid-template-columns:minmax(0,1fr)}.column-calls{min-height:80px;padding:8px 18px}.no-calls{margin:20px 0}.history-question,.display .history-question{font-size:24px}.history-answer{font-size:19px}.column-head strong{font-size:30px}.column-head span{font-size:11px}.hero-math,.display .hero-math{font-size:25px}.intro h1,.display .intro h1{font-size:25px}.empty-title{font-size:25px}}

.display .live-section-link{display:none}

.edition-nav{margin:24px 0;font-size:13px}.edition-nav a{color:var(--green);font-weight:600}.display .edition-nav{display:none}