/* Early multiplication lesson tools */
.ml-box{border:2px solid var(--ink);border-radius:16px;background:#fff;box-shadow:6px 6px 0 var(--pencil);padding:16px 20px;margin:14px 0 26px}
.ml-box h3{margin:0 0 4px}
.ml-svg{max-width:100%;height:auto;display:block}
.ml-ctrls{display:flex;flex-wrap:wrap;gap:10px 22px;margin:8px 0 12px}
.ml-step{display:flex;align-items:center;gap:8px;font-weight:600;font-size:.95rem}
.ml-step button{font:inherit;font-size:1.3rem;font-weight:700;width:38px;height:38px;border-radius:10px;border:1.5px solid var(--line);background:var(--grid);color:var(--ink);cursor:pointer}
.ml-step b{min-width:26px;text-align:center;font-size:1.3rem}
.ml-pic{overflow-x:auto;margin:6px 0}
.ml-say p{margin:4px 0}
.ml-big{font-size:clamp(1.4rem,5vw,2rem);font-weight:700}
.ml-say .b{color:#2f4f9e}.ml-say .g{color:#12805c}
.ml-qs{padding-left:22px;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px 26px}
.ml-qs>li{padding:10px 12px;border:1.5px solid var(--line);border-radius:12px}
.ml-qs>li.ok{border-color:var(--marker);background:#f2faf6}.ml-qs>li.no{border-color:#c0392b;background:#fdf5f4}
.ml-qpic{overflow-x:auto}
.ml-sum{font-size:1.3rem;font-weight:700;margin:6px 0;font-variant-numeric:tabular-nums}
.ml-ask{margin:4px 0;font-size:.92rem;color:var(--muted)}
.ml-in{font-size:1.2rem;font-weight:700;display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.ml-in input{width:76px;font:inherit;font-size:1.1rem;padding:4px 6px;border:1.5px solid var(--line);border-radius:8px;text-align:center}
.ml-in input::placeholder{font-size:.7rem;font-weight:400}
.ml-in input.ok{border-color:var(--marker);background:#e6f4ee}.ml-in input.no{border-color:#c0392b;background:#fbeaea}
.ml-ch{display:flex;flex-direction:column;gap:6px}
.ml-ch button{font:inherit;font-size:.9rem;text-align:left;border:1.5px solid var(--line);background:#fff;border-radius:10px;padding:6px 10px;cursor:pointer;color:var(--ink)}
.ml-ch button[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.ml-fb{font-size:.9rem;margin:6px 0 0;min-height:1.2em}
.ml-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.ml-score{font-weight:700;margin:8px 0 0}
.ml-lab{display:flex;flex-direction:column;gap:4px;font-size:.85rem;font-weight:600;color:var(--muted)}
.ml-num{font:inherit;font-size:1.25rem;font-weight:700;width:120px;padding:6px 10px;border:1.5px solid var(--line);border-radius:8px;color:var(--ink)}
.ml-x{font-size:1.6rem;font-weight:700;align-self:end;padding-bottom:6px}
.ml-ctrls:has(.ml-lab){align-items:end}
.ml-stepnote{min-height:3em;font-weight:600;margin:8px 0}
.ml-story{font-size:1.05rem;font-weight:600;margin:4px 0}
.ml-nav .btn:disabled{opacity:.45;cursor:not-allowed}
.ml-stack{font:700 1.35rem/1.35 ui-monospace,Menlo,Consolas,monospace;background:var(--grid);border-radius:12px;padding:12px 18px;display:inline-block;margin:6px 0 14px;color:var(--ink)}
.ml-gnote{font-size:.92rem;color:var(--muted);margin:4px 0 10px}
.ml-lvbar{display:flex;flex-direction:column;gap:4px;font-weight:700;margin-bottom:12px}
.ml-lvbar .mt-bar{height:10px;background:var(--grid);border-radius:99px;overflow:hidden}.ml-lvbar .mt-bar i{display:block;height:100%;background:var(--marker)}
.ml-levels{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.ml-levels>li{border:2px solid var(--line);border-radius:14px;padding:12px 16px;background:#fff;scroll-margin-top:90px}
.ml-levels>li.pass{border-color:var(--marker);background:#f4fbf7}
.ml-lvhead{display:grid;grid-template-columns:44px 1fr auto;gap:12px;align-items:center}
.ml-lvhead h3{margin:0;font-size:1.1rem}.ml-lvhead p{margin:2px 0 0;font-size:.92rem;color:var(--muted)}
.ml-lvnum{width:40px;height:40px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem}
.ml-levels>li.pass .ml-lvnum{background:var(--marker)}
.ml-tick{color:var(--marker-dark);font-size:.85rem}
.ml-lvq:not(:empty){margin-top:12px;border-top:1px dashed var(--line);padding-top:10px}
.ml-reset{background:none;border:0;color:var(--muted);text-decoration:underline;font:inherit;font-size:.85rem;margin-top:10px;cursor:pointer}
@media (max-width:640px){.ml-lvhead{grid-template-columns:40px 1fr}.ml-lvhead .ml-go{grid-column:1/-1}}
.ml-confetti{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.ml-confetti i{position:absolute;top:-30px;font-style:normal;animation:mlfall 2.2s ease-in forwards}
@keyframes mlfall{to{transform:translateY(600px) rotate(300deg);opacity:0}}
@media (max-width:640px){.ml-in input{width:88px;font-size:1.25rem;padding:8px}.ml-nav .btn{flex:1 1 100%;padding:14px;font-size:1.05rem}.ml-ch button{padding:10px 12px;font-size:1rem}}

/* rulebook: 48px targets, 8px gaps */
.ml-gquiz .kit-lv{display:flex;flex-wrap:wrap;gap:8px}
.ml-gquiz .chip,.ml-step button,.ml-go,.ml-reset,.ml-nav .btn{min-height:48px}
.ml-gquiz .chip{padding:6px 16px}
.ml-step button{min-width:48px}
.ml-num{min-height:48px}
.ml-gnote{color:var(--ink)}
.mkq-q .ml-sum{font-size:1.75rem;margin:.2em 0}.mkq-q .ml-story{font-size:1.5rem;font-weight:600;line-height:1.35}
.ml-chips{display:flex;gap:10px;flex-wrap:wrap;margin:8px 0}select.ml-num{width:auto}

.frc{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;line-height:1.05;margin:0 .08em}.frc>span:first-child{border-bottom:.09em solid currentColor;padding:0 .12em}.frc .frs{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.ml-fracpractice .chip,.ml-decpractice .chip,.ml-pctpractice .chip,.ml-ratpractice .chip,.ml-topicpractice .chip{min-height:48px}
.ml-fracpractice .mkq-ask,.ml-decpractice .mkq-ask,.ml-pctpractice .mkq-ask,.ml-ratpractice .mkq-ask,.ml-topicpractice .mkq-ask,.ml-levels-app .mkq-ask{font-size:1.5rem;font-weight:600;line-height:1.3}
.mkq-q .ml-svg{margin:0 auto}