/* Lär dig matte: quiet paper, useful colour and one mathematical action per frame. */
.lm{--lm-border:#dce3d8;--lm-soft:#f1f4eb;--lm-purple:#70628f;--lm-gold:#b57c2e;max-width:1280px;margin-inline:auto}
.lm button,.lm a{touch-action:manipulation}.lm a.primary{text-decoration:none}.lm .eyebrow{letter-spacing:1.6px;font-size:.68rem}.lm h1{letter-spacing:-1.6px}.lm h2{letter-spacing:-.6px}.lm p{line-height:1.6}.lm select{font:inherit;color:var(--ink)}
.lm-hero{background:#174e43;color:#fffbed;border-radius:24px;display:grid;grid-template-columns:1.15fr 1fr;padding:30px 38px;position:relative;overflow:hidden;align-items:center;min-height:295px}.lm-hero .eyebrow{color:#c8ddc6}.lm-hero h1{font-size:clamp(2.8rem,5vw,4.5rem);margin-bottom:12px;line-height:1.08}.lm-hero h1>span{color:#ffcf55}.lm-hero p{color:#dbe8d5;font-size:1.1rem;margin-bottom:24px}.lm-hero-art{width:100%;max-width:440px;justify-self:center}.lm-hero .primary{gap:26px;min-height:48px;padding:12px 19px}.lm-hub-meta{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 2px 24px;font-size:.78rem;color:#667969}.lm-hub-meta b{color:var(--green)}.lm-hub-meta .text-button{font-size:.78rem;padding:8px 0;min-height:40px}
.lm-search-bar{display:grid;grid-template-columns:1fr 265px;gap:18px;margin-bottom:17px}.lm-search-bar label{display:block;font-size:.83rem;font-weight:800;margin-bottom:7px}.lm-search-bar input,.lm-search-bar select{width:100%;min-height:48px;background:#fff;border:1.5px solid #d3ded0;border-radius:11px;padding:10px 14px;box-sizing:border-box;min-width:0}.lm-search-bar input{background:#fff}.lm-search-bar input::placeholder{color:#6d7b70;font-size:.88rem}
.lm-filters{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:32px}.lm-filters button{border:1px solid var(--lm-border);background:transparent;border-radius:30px;padding:8px 13px;min-height:40px;font-size:.78rem;font-weight:700;color:#587060}.lm-filters button[aria-pressed=true]{background:#215d4b;color:#fff;border-color:#215d4b}.lm-filters button:hover{border-color:#597f68}
.lm-area-section{margin:0 0 32px}.lm-area-heading{display:flex;align-items:center;gap:13px;margin-bottom:14px}.lm-icon{width:45px;height:45px;flex:none}.lm-area-heading h2{font-size:1.3rem;margin:0 0 4px}.lm-area-heading p{margin:0;font-size:.82rem}.lm-area-heading>span{margin-left:auto;color:#6f7e70;font-size:.75rem;white-space:nowrap}.lm-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.lm-topic-card{display:flex;flex-direction:column;border:1px solid var(--lm-border);border-radius:15px;padding:20px;background:#fff;color:var(--ink);text-decoration:none;box-shadow:0 3px 0 #164b3910;transition:transform .15s,box-shadow .15s;position:relative;overflow:hidden}.lm-topic-card:before{content:'';position:absolute;inset:0 0 auto;height:4px;background:#b9d7c3}.lm-topic-card.lm-blue:before{background:#a7c6d7}.lm-topic-card.lm-peach:before{background:#e5bc92}.lm-topic-card.lm-purple:before{background:#b9add1}.lm-topic-card.lm-yellow:before{background:#e6c36d}.lm-topic-card:hover{transform:translateY(-3px);box-shadow:0 6px 0 #164b3914}.lm-topic-level{font-size:.66rem;font-weight:800;color:#687d6e;letter-spacing:.4px}.lm-topic-level>span{margin:0 5px}.lm-topic-card h3{font-size:1.16rem;line-height:1.25;margin:14px 0 8px;letter-spacing:-.3px}.lm-topic-card p{font-size:.83rem;margin:0 0 21px;line-height:1.55;flex:1}.lm-topic-card>div{display:flex;justify-content:space-between;align-items:center;gap:8px}.lm-topic-card>div>b{font-size:1.25rem;color:#59725f}.lm-topic-state{font-size:.72rem;font-weight:700;color:#647e6a}.lm-topic-state.lm-tried{color:#326b50}.lm-device-note{border-top:1px solid var(--lm-border);padding:20px 0;font-size:.78rem;display:flex;gap:24px;color:#728173}.lm-device-note b{color:#486553;white-space:nowrap}.lm-empty{background:#fff;border:1px dashed #b4c7b5;border-radius:16px;padding:36px;text-align:center;margin:20px 0}.lm-empty h2{font-size:1.3rem}
.lm-toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:15px;min-height:42px}.lm-toolbar>div{display:flex;gap:8px;align-items:center}.lm-toolbar .back{font-size:.85rem;text-decoration:none;font-weight:700;padding:8px 0}.lm-toolbar .question-tool{font-size:.76rem;min-height:40px;padding:9px 12px}.lm-lesson-heading{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:16px}.lm-lesson-heading .eyebrow{margin-bottom:7px}.lm-lesson-heading h1{font-size:clamp(1.8rem,3.3vw,2.6rem);margin-bottom:7px;outline:none}.lm-lesson-heading p{margin:0;font-size:.85rem;max-width:680px}.lm-mode-switch{display:flex;border:1px solid var(--lm-border);border-radius:12px;padding:4px;background:#eaf0e4;flex:none;gap:3px}.lm-mode-switch button{min-height:40px;border-radius:8px;padding:8px 16px;background:transparent;font-size:.8rem;font-weight:800;white-space:nowrap}.lm-mode-switch button[aria-pressed=true]{background:white;color:#205c45;box-shadow:0 2px 3px #2b513114}
.lm-methods,.lm-example-picker{display:flex;gap:15px;align-items:center;margin-bottom:12px}.lm-methods>span,.lm-example-picker>span{font-size:.72rem;font-weight:800;min-width:83px;color:#647968}.lm-methods>div,.lm-example-picker>div{display:flex;flex-wrap:wrap;gap:7px;min-width:0}.lm-methods button{background:white;border:1px solid var(--lm-border);padding:8px 14px;min-height:40px;border-radius:9px;font-size:.79rem;font-weight:700}.lm-methods button[aria-pressed=true]{background:#dfecdf;border-color:#719b7a;box-shadow:inset 0 0 0 1px #719b7a}.lm-example-picker button{background:transparent;border-radius:8px;padding:6px 10px;min-height:36px;display:flex;align-items:center;gap:8px;font-size:.73rem;text-align:left;max-width:300px}.lm-example-picker button>b{display:grid;place-items:center;width:22px;height:22px;flex:none;background:#e5eadd;border-radius:50%;font-size:.68rem}.lm-example-picker button[aria-pressed=true]{background:#ede8d8;color:#5c572f}.lm-example-picker button[aria-pressed=true]>b{background:#d3a64d;color:#fff}
.lm-workspace{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.9fr);border:1px solid #d2ddcd;background:#fff;border-radius:20px;overflow:hidden;box-shadow:0 4px 0 #2057350b;min-height:360px}.lm-board{padding:22px 28px 24px;background-color:#f1f5e9;background-image:radial-gradient(#9eb69d35 1px,transparent 1px);background-size:18px 18px;display:flex;flex-direction:column;min-width:0;position:relative}.lm-board-top{display:flex;justify-content:space-between;gap:12px;font-size:.65rem;font-weight:800;letter-spacing:.8px;text-transform:uppercase;color:#617b61;margin-bottom:14px}.lm-visual{display:flex;justify-content:center;align-items:center;min-height:215px;flex:1;overflow-x:auto;scrollbar-width:thin;padding:8px 0 12px}.lm-svg{display:block;width:100%;max-height:310px;min-width:0;overflow:visible}.lm-formula{background:#fffaf0de;border:1px solid #e3decb;border-radius:10px;padding:12px 14px;font-size:1.06rem;font-weight:800;text-align:center;line-height:1.45;overflow-wrap:anywhere;min-height:49px;display:grid;place-items:center;margin-top:6px}
.lm-coach{padding:26px 30px;display:flex;flex-direction:column;min-width:0}.lm-step-track{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:24px}.lm-step-track button{width:28px;height:28px;min-width:28px;border-radius:50%;background:#edf1e7;border:1px solid #e1e6da;color:#78866f;font-size:.67rem;font-weight:800}.lm-step-track button.lm-reached{background:#dcebdc;color:#376b48;border-color:#c4d9c1}.lm-step-track button[aria-current=step]{background:#215d4b;color:#fff;border-color:#215d4b}.lm-step-copy{flex:1;min-height:160px}.lm-step-copy small{font-size:.63rem;font-weight:900;letter-spacing:1.3px;color:#94703b}.lm-step-copy h2{font-size:clamp(1.3rem,2.5vw,1.75rem);line-height:1.2;margin:10px 0 15px;outline:none}.lm-step-copy p{font-size:1rem;line-height:1.7;margin:0 0 22px;color:#536e5b}.lm-step-actions{display:flex;gap:10px;align-items:center}.lm-step-actions .primary{flex:1;min-height:46px;padding:11px 18px;font-size:.85rem;justify-content:space-between;gap:10px;box-shadow:0 3px 0 #092f28}.lm-step-actions .secondary{min-height:46px;padding:10px 15px;font-size:1.2rem}.lm-test-shortcut{font-size:.73rem;padding:12px 0 0;align-self:flex-start;min-height:35px}.lm-reminder{display:flex;align-items:flex-start;gap:13px;background:#f0eddf;border:1px solid #e4dfcd;border-radius:12px;padding:14px 18px;margin-top:17px}.lm-reminder>span{font-size:1.4rem;line-height:1;color:#b88735}.lm-reminder b{font-size:.75rem}.lm-reminder p{font-size:.8rem;margin:3px 0 0;color:#746b51}.lm-lesson-bottom{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font-size:.72rem;color:#74836f;padding:14px 2px}.lm-lesson-bottom a{font-weight:700}.lm-notice{font-size:.78rem;color:#42734e;padding-top:10px;min-height:20px}.lm-focus-title:focus{outline:none}.lm-share-fallback{margin:0 0 12px;background:#fff;padding:12px;border:1px solid var(--lm-border);border-radius:10px}.lm-share-fallback label{font-size:.8rem;display:block}.lm-share-fallback input{width:100%;font-size:.8rem;padding:8px}
.lm-columns{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;min-width:min-content;padding:8px 0}.lm-columns table{border-collapse:separate;border-spacing:3px 1px}.lm-columns thead th{font:700 .61rem "Trebuchet MS",sans-serif;letter-spacing:.5px;color:#6c7f67;padding-bottom:9px;min-width:40px}.lm-columns tbody th{text-align:right;font:700 1.4rem "Trebuchet MS",sans-serif;max-width:78px;padding-right:10px;color:#507759}.lm-columns td{font-size:2.4rem;text-align:center;line-height:1.3;min-width:45px;height:49px;font-weight:700;border-radius:8px}.lm-columns .lm-small-row td{font-size:1.1rem;color:#b07335;height:25px;font-weight:800}.lm-columns .lm-small-row th{font-size:.57rem;line-height:1.3;font-weight:400}.lm-columns .lm-result-row td{border-top:2px solid #6a8c6b;border-radius:0;color:#2b6b4d;padding-top:8px}.lm-columns .lm-active-cell{background:#ffe0a0}.lm-columns .lm-exchanged{text-decoration:line-through;text-decoration-color:#a56d43;text-decoration-thickness:2px;color:#748571}
.lm-big-equation{font-size:clamp(2rem,4.4vw,3.6rem);font-weight:800;letter-spacing:-1px;text-align:center;line-height:1.5;overflow-wrap:anywhere;max-width:100%}.lm-place{display:flex;justify-content:center;gap:9px;flex-wrap:wrap}.lm-place>div{display:flex;flex-direction:column;text-align:center;background:#e1e9d9;border-radius:12px;padding:14px 10px;min-width:72px}.lm-place span{font-size:.65rem;color:#648063}.lm-place strong{font-size:2.8rem;line-height:1.7}.lm-place small{font-size:.7rem}.lm-highlight{background:#ffdf9e!important;box-shadow:inset 0 0 0 1px #e4c071}.lm-parts{width:100%;font-size:1.2rem;display:grid;gap:22px}.lm-parts>div{display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap}.lm-parts b{padding:8px 10px;background:#e3e9d8;border-radius:8px}.lm-parts>div>strong{font-size:1.8rem;margin-right:8px}.lm-chunks{width:min(100%,350px)}.lm-chunk-start{font-size:2.7rem;font-weight:800}.lm-chunk-start span{font-size:1.5rem;color:#7e8b70}.lm-chunks table{width:100%;font-size:1.15rem;border-collapse:collapse}.lm-chunks th{font-size:.7rem;text-align:left;padding:8px;border-bottom:1px solid #c7d5bc}.lm-chunks td{padding:9px 8px;border-bottom:1px solid #dce5d3}.lm-chunk-total{font-weight:800;margin-top:12px;color:#35744d}.lm-chunk-total>span{font-weight:400;font-size:.8rem}.lm-area-grid{display:grid;grid-template-columns:40px repeat(var(--lm-cols),minmax(80px,1fr));gap:5px;width:100%;max-width:390px;text-align:center;align-items:stretch}.lm-area-grid>b{font-size:1rem;padding:12px 6px}.lm-area-grid>span{min-height:85px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#e0e8d5;color:#7e8d72;border-radius:5px;font-size:.85rem}.lm-area-grid>span.lm-cell-shown{background:#c7ddbc;color:#38603a}.lm-area-grid strong{font-size:1.6rem}.lm-decimal{font:700 2.3rem ui-monospace,SFMono-Regular,monospace;display:flex;flex-direction:column;align-items:flex-end}.lm-decimal strong{border-top:2px solid #698c6b;padding-top:8px;margin-top:8px}.lm-decimal small{font:400 .68rem "Trebuchet MS",sans-serif;margin-top:15px;color:#728467}.lm-balance{display:flex;align-items:center;justify-content:center;gap:15px;flex-wrap:wrap;width:100%}.lm-balance>div{padding:18px 15px;background:#e1e9d7;border:1px solid #c4d5b8;border-radius:12px;font-size:1.5rem;font-weight:800;min-width:100px;text-align:center}.lm-balance>strong{font-size:2rem}.lm-balance svg{width:90%;max-height:70px;margin-top:-15px}.lm-balance>span{font-size:.75rem;color:#6a7f64}.lm-terms,.lm-distribute{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;font-size:1.3rem}.lm-terms b{padding:18px 15px;background:#eedfc4;border-radius:10px}.lm-terms b.lm-x-term{background:#d8d1e8;color:#655781}.lm-distribute>strong{font-size:2.2rem}.lm-distribute>div{display:flex;align-items:center;gap:12px;padding:15px;background:#dce7d4;border-radius:15px}.lm-distribute b{padding:10px;border-radius:8px}.lm-distribute small{display:block;text-align:center;border-top:1px solid #cdbb89;padding-top:10px;margin-top:12px}.lm-data{display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap}.lm-data>span{text-align:center}.lm-data b{display:block;background:#dce6d3;border-radius:10px;padding:15px;font-size:1.6rem}.lm-data small{font-size:.65rem;display:block;margin-top:6px}.lm-powers{display:flex;gap:9px;justify-content:center;align-items:center;flex-wrap:wrap}.lm-powers b{padding:14px 17px;border-radius:10px;background:#e1ddef;font-size:1.9rem;color:#6e608b}.lm-powers small{flex-basis:100%;text-align:center;font-size:.75rem;margin-top:8px}.lm-growth{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px}.lm-growth>div{display:flex;flex-direction:column;background:#e0e9d6;padding:14px;border-radius:10px;text-align:center}.lm-growth span,.lm-growth small{font-size:.65rem;color:#6c7e60}.lm-growth b{font-size:1.2rem;padding-block:7px}.lm-unit-flow{display:flex;align-items:center;gap:20px;text-align:center;flex-wrap:wrap;justify-content:center}.lm-unit-flow>b{font-size:2.5rem;padding:15px;border-radius:12px;background:#e6e4cf}.lm-unit-flow small{display:block;font-size:.7rem;font-weight:400;max-width:150px}.lm-unit-flow>span{font-size:2rem}.lm-ratio{display:flex;flex-direction:column;text-align:center;align-items:center;font-size:1.8rem}.lm-ratio strong{border-bottom:2px solid #76936d;padding-bottom:10px;font-size:3rem}.lm-ratio small{font-size:1rem}.lm-groups{display:flex;justify-content:center;flex-wrap:wrap;gap:8px}.lm-groups>b{padding:10px 14px;border:1px solid #a6bfa2;border-radius:7px;background:#dce9d4;text-align:center;font-size:1.3rem}.lm-groups small{display:block;font-size:.6rem}.lm-groups>span{align-self:center;font-size:.9rem;padding:10px}
.lm-practice-top{margin-bottom:17px}.lm-practice-top>div{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:.78rem;color:#708068}.lm-level-pill{display:inline-block;border-radius:30px;background:#e8e0ef;color:#74618a;font-size:.72rem;font-weight:800;padding:5px 12px}.lm-practice-top progress{display:block;width:100%;height:6px;margin:10px 0;border:0;border-radius:8px;overflow:hidden;accent-color:#377654;background:#e3eada}.lm-practice-top progress::-webkit-progress-bar{background:#e3eada}.lm-practice-top progress::-webkit-progress-value{background:#498465;border-radius:8px}.lm-practice-top p{font-size:.73rem;margin:0}.lm-problem{font-size:clamp(1.3rem,2.3vw,1.65rem);line-height:1.45;margin:8px 0 18px;font-weight:800;letter-spacing:-.3px;outline:none}.lm-practice-art{display:flex;align-items:center;justify-content:center;gap:22px;flex:1;min-height:140px}.lm-area-art{width:115px;height:115px;flex:none}.lm-practice-art span{font-size:1rem;font-weight:700;line-height:1.6;color:#789072}.lm-paper-note{font-size:.68rem;color:#6f8168;margin-top:14px}.lm-question-visual .lm-svg{max-height:260px}.lm-practice .lm-coach{padding:26px 30px}.lm-coach form label{display:block;font-size:.9rem;font-weight:800;margin-bottom:9px}.lm-coach form label>span{font-weight:400}.lm-coach input{width:100%;border:1.5px solid #adbfac;border-radius:10px;min-height:59px;background:#fffdf5;font-size:1.7rem;font-weight:700;padding:10px 14px;margin:0 0 7px;color:#224f37}.lm-coach input[aria-invalid=true]{border-color:#b97f45}.lm-coach input:disabled{background:#edf3e8;color:#397250}.lm-coach form small{display:block;font-size:.68rem;color:#708368;margin:0 0 17px}.lm-coach form>.primary{width:100%;min-height:46px;padding:11px 16px;font-size:.86rem;justify-content:space-between;box-shadow:0 3px 0 #092f28}.lm-feedback{font-size:.85rem;color:#74806b;min-height:60px;margin:18px 0 8px;line-height:1.55}.lm-feedback-right{font-weight:800;color:#2b7049}.lm-feedback-try{color:#a06d38}.lm-practice-next{font-size:.85rem;min-height:45px;padding:10px 14px;justify-content:space-between;gap:8px}.lm-help-actions{display:flex;justify-content:space-between;align-items:center;gap:15px;flex-wrap:wrap}.lm-help-actions .secondary{min-height:38px;padding:7px 12px;font-size:.75rem}.lm-help-actions .text-button{font-size:.72rem;padding:6px 0;min-height:38px}.lm-hint{margin:10px 0 0;background:#f3eddd;border-radius:8px;padding:12px;font-size:.8rem;color:#8c744e}.lm-solution{display:grid;grid-template-columns:1fr 1fr;gap:24px;background:#fff7e9;border:1px solid #e6d2aa;border-radius:16px;padding:24px;margin-top:18px}.lm-solution h2{font-size:1.3rem}.lm-solution p{font-size:.88rem}.lm-solution>div:last-child{display:grid;place-items:center}.lm-solution-actions{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}.lm-solution-actions button{font-size:.8rem;padding:10px 14px;min-height:42px}
.lm-result{text-align:center;border:1px solid var(--lm-border);border-radius:20px;background:#fff;padding:28px 40px}.lm-result-spark{font-size:3rem;line-height:1.1;color:#d5a13f;margin-bottom:10px}.lm-result h2{font-size:clamp(1.5rem,3vw,2.2rem);max-width:700px;margin:0 auto 15px;line-height:1.2}.lm-result>p{font-size:.88rem;max-width:650px;margin:0 auto 18px}.lm-result-levels{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:640px;margin:20px auto}.lm-result-levels>div{background:#eff4e8;padding:14px;border-radius:12px;display:flex;flex-direction:column}.lm-result-levels span{font-size:.73rem;font-weight:800}.lm-result-levels b{font-size:1.8rem;margin:6px 0}.lm-result-levels small{font-size:.63rem;color:#6d7e62}.lm-next-advice{max-width:640px;margin:0 auto 20px;text-align:left;background:#f7f0df;border-radius:10px;padding:15px 18px}.lm-next-advice b{font-size:.75rem}.lm-next-advice p{font-size:.82rem;color:#82724d;margin:4px 0 0}.lm-result-actions{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap}.lm-result-actions button{min-height:44px;padding:10px 16px;font-size:.8rem}.lm-result-actions a{font-size:.77rem;font-weight:700}.lm-result p.lm-save-status{font-size:.68rem;color:#829078;margin:20px auto 0}.lm-teacher-dialog{max-width:580px;width:calc(100% - 32px);padding:35px;border:1px solid var(--lm-border);border-radius:20px;color:var(--ink)}.lm-teacher-dialog h2{font-size:1.65rem}.lm-teacher-dialog p,.lm-teacher-dialog li{font-size:.88rem;line-height:1.7}.lm-teacher-dialog ol{padding-left:22px}.lm-teacher-dialog .primary{min-height:44px;padding:10px 16px;font-size:.8rem}.lm-teacher-dialog::backdrop{background:#123b3290}
body.question-presenting main>.lm,main:fullscreen>.lm{max-width:1420px;margin-inline:auto}.question-presenting .lm-toolbar,main:fullscreen .lm-toolbar{position:sticky;top:0;z-index:4;background:var(--paper);padding-block:0 10px;margin-bottom:10px}.question-presenting .lm-lesson-heading h1,main:fullscreen .lm-lesson-heading h1{font-size:clamp(1.8rem,3.4vmin,3rem)}.question-presenting .lm-step-copy p,main:fullscreen .lm-step-copy p{font-size:clamp(1rem,1.8vmin,1.25rem)}.question-presenting .lm-workspace,main:fullscreen .lm-workspace{min-height:min(57dvh,660px)}.question-presenting .lm-visual,main:fullscreen .lm-visual{min-height:210px}.question-presenting .lm-svg,main:fullscreen .lm-svg{max-height:min(37dvh,430px)}
@media(max-width:1150px){.header{gap:20px;padding-inline:24px}.header nav{gap:17px;min-width:0;overflow-x:auto;scrollbar-width:thin}.nav-button{flex:none;font-size:.86rem}.brand{flex:none}.account{flex:none;max-width:150px}.lm-hero{padding:28px}.lm-example-picker button{max-width:235px}.lm-coach{padding:22px}.lm-board{padding:20px}}
@media(min-width:821px) and (max-height:750px){.lm-toolbar{margin-bottom:7px}.lm-lesson-heading{margin-bottom:12px}.lm-lesson-heading h1{font-size:1.8rem}.lm-lesson-heading p{font-size:.77rem}.lm-methods,.lm-example-picker{margin-bottom:9px}.lm-methods button{padding:6px 12px;min-height:36px}.lm-example-picker button{min-height:32px}.lm-workspace{min-height:310px}.lm-board{padding:15px 20px}.lm-visual{min-height:170px;padding:0}.lm-svg{max-height:220px}.lm-coach{padding:18px 24px}.lm-step-track{margin-bottom:12px}.lm-step-copy{min-height:145px}.lm-step-copy h2{font-size:1.4rem;margin:7px 0 11px}.lm-step-copy p{font-size:.9rem;margin-bottom:16px}.lm-reminder{margin-top:12px;padding:10px 16px}.lm-formula{font-size:.95rem;padding:9px;min-height:40px}.lm-board-top{margin-bottom:6px}.lm-lesson-bottom{padding-block:9px}.lm-practice-top{margin-bottom:12px}.lm-practice-top p{display:none}.lm-practice .lm-coach{padding:18px 24px}.lm-problem{font-size:1.25rem}.lm-feedback{margin-top:12px;min-height:47px}.lm-practice-art{min-height:110px}.lm-columns td{height:41px;font-size:2rem}.lm-columns .lm-small-row td{height:19px;font-size:.9rem}.lm-result{padding:20px 35px}.lm-result-spark{font-size:2.4rem}.lm-result-levels{margin:14px auto}.lm-result-levels>div{padding:10px}.lm-result-levels b{font-size:1.5rem}}
@media(max-width:820px){.lm-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lm-workspace{grid-template-columns:1fr 1fr}.lm-lesson-heading{align-items:flex-start}.lm-lesson-heading h1{font-size:1.8rem}.lm-mode-switch button{padding:8px 11px;font-size:.75rem}.lm-methods,.lm-example-picker{align-items:flex-start;gap:8px;flex-direction:column}.lm-example-picker>div{flex-wrap:nowrap;overflow-x:auto;width:100%;padding-bottom:5px}.lm-example-picker button{flex:0 0 auto;max-width:260px}.lm-coach{padding:20px}.lm-step-copy h2{font-size:1.4rem}.lm-step-copy p{font-size:.9rem}.lm-board{padding:16px}.lm-board-top{font-size:.6rem}.lm-hero h1{font-size:3rem}.lm-hub-meta{flex-wrap:wrap;gap:5px 18px}.lm-search-bar{grid-template-columns:1fr 225px;gap:12px}.lm-columns td{min-width:34px;font-size:2rem}.lm-columns thead th{min-width:34px}.lm-growth{gap:6px}.lm-growth>div{padding:10px}.lm-growth b{font-size:1rem}}
@media(max-width:620px){.lm-hero{grid-template-columns:1fr;padding:28px 25px;min-height:auto}.lm-hero p{font-size:1rem;margin-bottom:18px}.lm-hero-art{position:absolute;width:170px;right:-38px;bottom:-23px;opacity:.28;pointer-events:none}.lm-hero>div{position:relative;z-index:1}.lm-hero h1{font-size:2.7rem}.lm-hero .primary{font-size:.85rem;gap:16px}.lm-hub-meta{font-size:.7rem;padding-bottom:17px}.lm-hub-meta .text-button{width:100%;text-align:left}.lm-search-bar{grid-template-columns:1fr}.lm-search-bar label{font-size:.78rem}.lm-search-bar input::placeholder{font-size:.76rem}.lm-search-bar select{font-size:.83rem}.lm-filters{flex-wrap:nowrap;overflow-x:auto;margin-bottom:23px;padding:0 0 8px;gap:6px}.lm-filters button{white-space:nowrap;flex:none;min-height:40px;font-size:.72rem}.lm-topic-grid{grid-template-columns:1fr}.lm-topic-card{padding:18px}.lm-topic-card h3{font-size:1.15rem;margin-top:11px}.lm-topic-card p{margin-bottom:16px}.lm-area-heading p{font-size:.73rem}.lm-area-heading h2{font-size:1.15rem}.lm-icon{width:39px;height:39px}.lm-area-heading{gap:10px}.lm-area-heading>span{display:none}.lm-device-note{flex-direction:column;gap:7px}.lm-toolbar{gap:8px;align-items:center;flex-wrap:wrap}.lm-toolbar>div{gap:5px;margin-left:auto}.lm-toolbar .back{font-size:.72rem}.lm-toolbar .question-tool{font-size:.67rem;padding:8px;min-height:38px}.lm-lesson-heading{flex-wrap:wrap;gap:12px;margin-bottom:15px}.lm-lesson-heading .eyebrow{font-size:.58rem;letter-spacing:1.2px}.lm-lesson-heading h1{font-size:1.8rem}.lm-lesson-heading p{font-size:.78rem}.lm-mode-switch{width:100%}.lm-mode-switch button{flex:1;min-height:36px}.lm-methods{margin-bottom:13px}.lm-methods>div{gap:5px}.lm-methods button{font-size:.7rem;padding:8px 10px;min-height:38px}.lm-methods>span,.lm-example-picker>span{font-size:.67rem}.lm-example-picker{margin-bottom:10px}.lm-example-picker button{font-size:.66rem;max-width:235px}.lm-workspace{grid-template-columns:1fr;border-radius:16px}.lm-board{padding:16px;min-height:250px}.lm-board-top{font-size:.58rem}.lm-visual{min-height:160px;padding:0}.lm-svg{max-height:240px}.lm-formula{min-height:43px;font-size:.95rem;padding:9px}.lm-coach{padding:21px}.lm-step-track{margin-bottom:15px}.lm-step-track button{min-width:30px;width:30px;height:30px}.lm-step-copy{min-height:0}.lm-step-copy p{font-size:.94rem;line-height:1.6;margin-bottom:20px}.lm-step-copy h2{font-size:1.4rem}.lm-step-actions .primary{font-size:.82rem}.lm-reminder{padding:12px 14px;gap:10px}.lm-reminder p{font-size:.74rem}.lm-lesson-bottom{font-size:.68rem;gap:9px}.lm-practice .lm-board{min-height:240px}.lm-practice-art{min-height:75px;gap:18px}.lm-area-art{width:85px;height:85px}.lm-practice-art span{font-size:.8rem}.lm-problem{font-size:1.25rem;margin:6px 0 14px}.lm-paper-note{font-size:.63rem}.lm-practice .lm-coach{padding:21px}.lm-feedback{min-height:45px;margin:15px 0 8px}.lm-help-actions .secondary{min-height:42px}.lm-help-actions .text-button{min-height:42px}.lm-solution{grid-template-columns:1fr;padding:20px;gap:15px}.lm-result{padding:24px 18px}.lm-result-levels{gap:6px}.lm-result-levels>div{padding:11px 5px}.lm-result-levels span{font-size:.62rem}.lm-result-levels small{font-size:.53rem}.lm-result-levels b{font-size:1.5rem}.lm-result>p{font-size:.81rem}.lm-next-advice{padding:13px}.lm-next-advice p{font-size:.77rem}.lm-result-actions{flex-direction:column;gap:14px}.lm-result-actions button{width:100%}.lm-notice{font-size:.71rem}.lm-teacher-dialog{padding:30px 22px}.lm-unit-flow{gap:10px}.lm-unit-flow>b{font-size:2rem;padding:12px}.lm-unit-flow small{max-width:110px}.lm-parts>div{gap:5px}.lm-parts b{padding:8px;font-size:1rem}.lm-columns td{font-size:2.2rem;min-width:40px}.lm-columns .lm-small-row td{font-size:1.05rem}.question-presenting .lm-workspace,main:fullscreen .lm-workspace{min-height:0}.question-presenting .lm-svg,main:fullscreen .lm-svg{max-height:250px}.question-presenting .lm-visual,main:fullscreen .lm-visual{min-height:160px}.question-presenting .lm-step-copy p,main:fullscreen .lm-step-copy p{font-size:.94rem}}
@media(prefers-reduced-motion:reduce){.lm-topic-card{transition:none}.lm-topic-card:hover{transform:none}.lm *{scroll-behavior:auto!important}}
.lm-example-context{font-size:.8rem;line-height:1.5!important;color:#546d50;margin:0 0 8px;padding-bottom:8px;border-bottom:1px solid #dce4d1}.lm-frequency{width:min(100%,340px);border-collapse:collapse;text-align:center;background:#fffdf4;border:1px solid #c2d3b5;border-radius:10px;overflow:hidden}.lm-frequency caption{font-size:.8rem;font-weight:800;padding-bottom:15px}.lm-frequency th{font-size:.8rem;padding:13px;background:#dfe9d4}.lm-frequency td{font-size:1.2rem;font-weight:700;padding:12px;border-top:1px solid #dde7d0}.lm-frequency tbody th{background:#eef3e5;border-top:1px solid #dde7d0;font-size:1.1rem}
@media(min-width:621px){.lm-hero{min-height:0;padding:24px 34px}.lm-hero-art{max-height:210px}.lm-hero h1{font-size:clamp(2.8rem,4.5vw,3.6rem)}.lm-hero p{font-size:1rem;margin-bottom:18px}.lm-hub-meta{padding-bottom:18px}}
.lm-home-invite{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 28px;margin-top:26px;background:#eeefdf;border:1px solid #dbdfc6;border-radius:18px}.lm-home-invite .eyebrow{font-size:.63rem;letter-spacing:1.5px;display:block;margin-bottom:8px;color:#8b773c}.lm-home-invite h2{font-size:1.45rem;margin:0 0 9px}.lm-home-invite p{font-size:.83rem;margin:0;max-width:560px}.lm-home-invite .primary{font-size:.84rem;min-height:46px;padding:11px 17px;flex:none}
@media(max-width:620px){.lm-home-invite{padding:21px;flex-direction:column;align-items:flex-start;gap:18px}.lm-home-invite h2{font-size:1.3rem}.lm-home-invite .primary{width:100%;justify-content:space-between}.question-presenting .lm-lesson-heading p,main:fullscreen .lm-lesson-heading p{display:none}.question-presenting .lm-lesson-heading,main:fullscreen .lm-lesson-heading{gap:9px;margin-bottom:10px}.question-presenting .lm-board,main:fullscreen .lm-board{min-height:200px;padding:12px 16px}.question-presenting .lm-visual,main:fullscreen .lm-visual{min-height:120px}.question-presenting .lm-svg,main:fullscreen .lm-svg{max-height:180px}.question-presenting .lm-coach,main:fullscreen .lm-coach{padding:17px 20px}.question-presenting .lm-step-track,main:fullscreen .lm-step-track{margin-bottom:10px}.question-presenting .lm-step-copy h2,main:fullscreen .lm-step-copy h2{font-size:1.25rem;margin-bottom:9px}.question-presenting .lm-step-copy p,main:fullscreen .lm-step-copy p{font-size:.86rem;margin-bottom:15px}.question-presenting .lm-reminder,main:fullscreen .lm-reminder{margin-top:12px}}
.lm{overflow-anchor:none}.lm-step-track button{min-width:32px;width:32px;height:32px}.lm-lesson-heading .lm-mode-switch button:disabled{opacity:1}
@media(max-width:620px){.question-presenting .lm-methods>span,.question-presenting .lm-example-picker>span,main:fullscreen .lm-methods>span,main:fullscreen .lm-example-picker>span{display:none}.question-presenting .lm-methods,main:fullscreen .lm-methods{margin-bottom:9px}.question-presenting .lm-example-picker,main:fullscreen .lm-example-picker{margin-bottom:8px}}
.lm-long-division,.lm-short-division{width:100%}@media(max-width:620px){.lm-long-division>.lm-svg{max-height:320px!important}}

/* Keep the step controls at the foot of the explanation while its text changes. */
.lm-solution>div:first-child{display:flex;flex-direction:column}.lm-solution .lm-solution-actions{margin-top:auto;padding-top:20px}

/* ---------- Utforska: interactive explorers (shared frame + kit controls, prefix lmx-) ---------- */
.lm-mode-switch button>span{margin-right:3px}
.lm-shortcuts{display:flex;gap:18px;flex-wrap:wrap;align-items:center}.lm-shortcuts .text-button{padding-inline:0}.lm-explore-shortcut{color:#7a5a1d!important}
.lm-explore-badge{font-size:.68rem;font-weight:800;color:#8a6420;background:#fff1c7;border-radius:20px;padding:3px 8px;margin-left:auto;margin-right:8px;white-space:nowrap}
.lm-explore{grid-template-columns:minmax(0,1.6fr) minmax(280px,.8fr);min-height:520px}
.lm-explore .lm-board{padding:18px 22px 22px}.lm-explore .lm-board-top{align-items:center;margin-bottom:10px}
.lmx-reset{background:#ffffffb8;border:1px solid #d3dccb;border-radius:20px;padding:5px 12px;min-height:32px;font-size:.7rem;font-weight:800;letter-spacing:.2px;text-transform:none;color:#4f6b55}.lmx-reset:hover{background:#fff}
.lmx-stage{flex:1;display:flex;flex-direction:column;gap:14px;min-height:430px;position:relative;min-width:0}
.lmx-stage-empty{align-items:center;justify-content:center;text-align:center}.lmx-loading{color:#6c826f;font-weight:700;animation:lmx-breathe 1.2s ease-in-out infinite}
.lmx-error{color:#8d4a2c;font-weight:700;text-align:center;margin:auto}
.lmx-coach{gap:0}.lmx-kicker{font-size:.62rem;font-weight:900;letter-spacing:1.3px;color:#94703b}
.lmx-title{font-size:clamp(1.25rem,2.3vw,1.6rem);line-height:1.2;margin:9px 0 10px;outline:none}
.lmx-intro{font-size:.92rem;line-height:1.6;margin:0 0 18px;color:#536e5b}
.lmx-challenges-head{display:flex;justify-content:space-between;align-items:baseline;font-size:.78rem;margin-bottom:8px}.lmx-challenges-head b{letter-spacing:.2px}.lmx-count{color:#6f8270;font-weight:700;font-size:.72rem}
.lmx-challenges{list-style:none;padding:0;margin:0 0 16px;display:grid;gap:7px}
.lmx-challenges li{display:flex;gap:11px;align-items:flex-start;padding:10px 12px;border:1px solid #e3e8dc;border-radius:12px;background:#fbfcf8;font-size:.86rem;line-height:1.45;color:#3d5a49;transition:background .25s,border-color .25s}
.lmx-check{flex:none;width:22px;height:22px;border-radius:50%;border:2px solid #b9c8b6;background:#fff;margin-top:-1px;position:relative}
.lmx-challenges li.lmx-done{background:#eaf4e6;border-color:#bcd8b9;color:#24533c}
.lmx-challenges li.lmx-done .lmx-check{background:#2f7d57;border-color:#2f7d57}
.lmx-challenges li.lmx-done .lmx-check:after{content:'';position:absolute;left:6px;top:2px;width:5px;height:10px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(45deg)}
.lmx-challenges li.lmx-just-done .lmx-check{animation:lmx-check-pop .5s cubic-bezier(.3,1.6,.5,1)}
.lmx-challenges li.lmx-just-done{animation:lmx-glow 1.2s ease-out}
.lmx-said{position:relative;min-height:0;font-size:.9rem;line-height:1.55;color:#2c4a3b;background:#fff8e3;border:1px solid #efdfae;border-radius:14px 14px 14px 4px;padding:12px 14px 12px 62px;margin:0 0 16px}
.lmx-said:empty{display:none}
.lmx-said:before{content:'';position:absolute;left:8px;bottom:6px;width:46px;height:46px;background:url(/static/assets/kangaroo.png) center/contain no-repeat}
.lmx-said-new{animation:lmx-said-in .35s ease-out}
.lmx-all-done{font-size:.86rem;line-height:1.5;background:#e3f0df;border-radius:12px;padding:12px 14px;margin-bottom:14px;color:#24533c}
.lmx-coach-actions{margin-top:auto;display:flex;gap:9px;flex-wrap:wrap}.lmx-coach-actions .primary{flex:1;min-height:46px;padding:11px 16px;font-size:.85rem;justify-content:space-between;gap:10px;box-shadow:0 3px 0 #092f28}.lmx-coach-actions .secondary{min-height:46px;font-size:.85rem}
/* kit controls */
.lmx-row{display:flex;flex-wrap:wrap;gap:10px 14px;align-items:flex-end;justify-content:center}
.lmx-panel{background:#fffffff0;border:1px solid #dfe6d9;border-radius:16px;padding:14px 16px;box-shadow:0 3px 0 #2057350d}
.lmx-slider{display:grid;gap:6px;min-width:190px;flex:1;max-width:340px}.lmx-slider.lmx-wide{max-width:none}
.lmx-slider-head{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:.78rem;font-weight:800;color:#3e5b49}
.lmx-slider-value{background:#173e35;color:#fff;border-radius:8px;padding:2px 9px;font-size:.85rem;font-variant-numeric:tabular-nums;min-width:2.4em;text-align:center}
.lmx-range{-webkit-appearance:none;appearance:none;width:100%;height:30px;background:transparent;margin:0;cursor:pointer;--lmx-fill:50%}
.lmx-range::-webkit-slider-runnable-track{height:10px;border-radius:10px;background:linear-gradient(90deg,#3f8a63 var(--lmx-fill),#dde6d6 var(--lmx-fill))}
.lmx-range::-moz-range-track{height:10px;border-radius:10px;background:#dde6d6}.lmx-range::-moz-range-progress{height:10px;border-radius:10px;background:#3f8a63}
.lmx-range::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;margin-top:-9px;border-radius:50%;background:#ffcf55;border:3px solid #173e35;box-shadow:0 2px 0 #0b2e2630;transition:transform .15s}
.lmx-range::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#ffcf55;border:3px solid #173e35}
.lmx-range:active::-webkit-slider-thumb{transform:scale(1.12)}
.lmx-range:focus-visible{outline:3px solid #e88c2e;outline-offset:3px;border-radius:12px}
.lmx-stepper{display:grid;gap:6px;justify-items:center}.lmx-stepper-label,.lmx-seg-label{font-size:.74rem;font-weight:800;color:#4e6a56}
.lmx-stepper-row{display:flex;align-items:center;gap:6px;background:#fff;border:1px solid #d6dfd0;border-radius:30px;padding:4px}
.lmx-step-btn{width:42px;height:42px;border-radius:50%;background:#e8efe2;font-size:1.35rem;font-weight:800;color:#1f5443;line-height:1}.lmx-step-btn:hover:not(:disabled){background:#d7e6d3}.lmx-step-btn:active:not(:disabled){transform:scale(.94)}.lmx-step-btn:disabled{opacity:.35}
.lmx-stepper-value{min-width:3.2ch;text-align:center;font-size:1.3rem;font-weight:800;font-variant-numeric:tabular-nums}
.lmx-seg{display:grid;gap:6px;justify-items:center}.lmx-seg-row{display:flex;flex-wrap:wrap;gap:4px;background:#e9efe3;border-radius:12px;padding:4px;justify-content:center}
.lmx-seg-btn{min-height:40px;border-radius:9px;padding:7px 13px;background:transparent;font-size:.82rem;font-weight:800;color:#4b6a55}.lmx-seg-btn[aria-pressed=true]{background:#fff;color:#173e35;box-shadow:0 2px 3px #2b513118}
.lmx-btn{min-height:44px;border-radius:11px;padding:9px 16px;font-weight:800;font-size:.85rem;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .12s,box-shadow .12s,background .15s}
.lmx-btn-primary{background:#173e35;color:#fff;box-shadow:0 3px 0 #092f28}.lmx-btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 0 #092f28}.lmx-btn-primary:active:not(:disabled){transform:translateY(2px);box-shadow:0 1px 0 #092f28}
.lmx-btn-secondary{background:#fff;border:1px solid #c3d0bf;color:#1f4b3d}.lmx-btn-secondary:hover:not(:disabled){background:#f0f5ec}
.lmx-btn-chip{background:#fff3cc;border:1px solid #ecd48a;color:#5d4510;min-height:38px;padding:6px 13px;border-radius:30px;font-size:.8rem}.lmx-btn-chip:hover:not(:disabled){background:#ffeaa8}
.lmx-btn:disabled{opacity:.45;cursor:default}
.lmx-readout{display:grid;justify-items:center;gap:1px;background:#fff;border:1px solid #dbe3d4;border-radius:14px;padding:8px 14px;min-width:92px}.lmx-readout strong{font-size:1.45rem;font-variant-numeric:tabular-nums;line-height:1.2;color:#173e35}.lmx-readout small{font-size:.66rem;font-weight:800;letter-spacing:.4px;color:#6d8070;text-transform:uppercase}
.lmx-tone-green{background:#e4f1e3;border-color:#bfd9bd}.lmx-tone-yellow{background:#fff3cc;border-color:#ecd48a}.lmx-tone-orange{background:#fbe5d3;border-color:#ecc19c}.lmx-tone-purple{background:#ece7f6;border-color:#cfc5e6}.lmx-tone-blue{background:#e1eef4;border-color:#b8d3e0}
.lmx-draggable{touch-action:none;cursor:grab;-webkit-user-select:none;user-select:none}.lmx-dragging{cursor:grabbing}
[tabindex].lmx-draggable:focus-visible,svg [tabindex]:focus-visible{outline:3px solid #e88c2e;outline-offset:3px}
.lmx-pop{animation:lmx-pop .4s cubic-bezier(.3,1.6,.5,1)}.lmx-shake{animation:lmx-shake .45s ease-in-out}
.lmx-burst{position:absolute;left:var(--x);top:var(--y);width:0;height:0;pointer-events:none;z-index:30}
.lmx-burst i{position:absolute;width:9px;height:9px;margin:-4.5px;background:#ffcf55;clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%);animation:lmx-burst .85s ease-out forwards;transform:rotate(var(--a))}
.lmx-burst i:nth-child(3n){background:#5fae86}.lmx-burst i:nth-child(4n){background:#e98b4d}
@keyframes lmx-burst{0%{transform:rotate(var(--a)) translateY(0) scale(.4);opacity:1}100%{transform:rotate(var(--a)) translateY(calc(var(--d) * -1)) scale(1);opacity:0}}
@keyframes lmx-pop{0%{transform:scale(1)}45%{transform:scale(1.14)}100%{transform:scale(1)}}
@keyframes lmx-shake{20%,60%{transform:translateX(-5px)}40%,80%{transform:translateX(5px)}}
@keyframes lmx-check-pop{0%{transform:scale(.4)}100%{transform:scale(1)}}
@keyframes lmx-glow{0%{box-shadow:0 0 0 0 #5fae8666}100%{box-shadow:0 0 0 12px #5fae8600}}
@keyframes lmx-said-in{from{opacity:.2;transform:translateY(4px)}to{opacity:1;transform:none}}
@keyframes lmx-breathe{50%{opacity:.45}}
/* walkthrough: each new step eases in so the change is easy to notice */
.lm-workspace:not(.lm-explore) .lm-visual>*{animation:lm-step-in .32s ease-out}
.lm-formula{transition:background .2s}
@keyframes lm-step-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media(max-width:1000px){.lm-explore{grid-template-columns:1fr}.lm-explore .lm-coach{border-top:1px solid #e1e8dc}.lmx-stage{min-height:380px}}
@media(max-width:620px){.lm-explore .lm-board{padding:12px 12px 16px}.lmx-stage{min-height:340px;gap:10px}.lmx-slider{min-width:150px}.lmx-said{padding-left:56px}.lm-mode-switch button{padding:8px 10px}.lm-mode-switch button>span{display:none}.lmx-coach-actions .primary,.lmx-coach-actions .secondary{width:100%}}
@media(prefers-reduced-motion:reduce){.lmx-pop,.lmx-shake,.lmx-challenges li.lmx-just-done,.lmx-challenges li.lmx-just-done .lmx-check,.lmx-said-new,.lmx-loading,.lm-workspace .lm-visual>*{animation:none!important}.lmx-burst{display:none}}

/* ---------- Typeset formulas (visuals.mjs mathInline): fractions, powers, roots, x, marked result ---------- */
.lm-eq{display:inline-flex;align-items:center;justify-content:center;flex-wrap:wrap;row-gap:.1em;line-height:1.2;max-width:100%}
.lm-eq-num{font-weight:800;white-space:nowrap;font-variant-numeric:tabular-nums}
.lm-eq-x,.lm-eq-var{font-family:Georgia,"Times New Roman",serif;font-style:italic;font-weight:700;color:#6656a6;padding:0 .05em 0 .02em}
.lm-eq-op{margin:0 .3em;font-weight:700;color:#bf6a2c}.lm-eq-eq{color:#557564}
.lm-eq-paren{font-weight:400;color:#4f6a5a;padding:0 .02em}.lm-eq-punct{margin-right:.28em}
.lm-eq-frac{display:inline-flex;flex-direction:column;align-items:center;font-weight:800;line-height:1.08;font-size:.8em;margin:0 .12em;vertical-align:middle}
.lm-eq-n{padding:0 .2em .08em;border-bottom:.075em solid currentColor;min-width:1.1em;text-align:center}.lm-eq-d{padding:.08em .2em 0;text-align:center}
.lm-eq-sup{font-size:.58em;line-height:0;vertical-align:.95em;margin-left:.05em;font-weight:800;color:#2f7d57}
.lm-eq-root{display:inline-flex;align-items:stretch;font-weight:800}.lm-eq-root-sign{font-weight:400;color:#2f7d57;padding-right:.02em}.lm-eq-radicand{border-top:.075em solid #2f7d57;padding:0 .12em;margin-top:.12em}
.lm-eq-unit,.lm-eq-word{font-size:.6em;font-weight:700;color:#5c7468;align-self:center}.lm-eq-unit{margin-left:.25em}.lm-eq-word{margin:0 .3em}
.lm-eq-unknown{display:inline-grid;place-items:center;min-width:1.15em;padding:0 .14em;border-radius:.2em;background:#ffe08a;border:.05em dashed #b7862a;color:#163e38;font-weight:800;line-height:1.15}
.lm-eq-sup .lm-eq-unknown{min-width:1em}
.lm-eq-result{display:inline-flex;align-items:center;background:#e1f0dd;color:#1d5f43;border-radius:.24em;padding:.02em .22em;box-shadow:inset 0 -.09em 0 #b7d6b3}
.lm-big-equation .lm-eq-result{animation:lm-result-in .5s .12s both cubic-bezier(.3,1.5,.5,1)}
@keyframes lm-result-in{from{opacity:0;transform:scale(.7)}to{opacity:1;transform:none}}
.lm-big-equation{font-size:clamp(2.1rem,4.4vw,3.6rem);background:#fffdf6;border:1px solid #e6e0c9;border-radius:22px;padding:.32em .6em;box-shadow:0 5px 0 #d9d2b5,0 14px 30px #16443614;max-width:100%}
.lm-formula .lm-eq{font-size:1em}.lm-formula .lm-eq-unit,.lm-formula .lm-eq-word{font-size:.9em;color:#3f5a4b}.lm-formula .lm-eq-word{margin:0 .22em}.lm-formula .lm-eq-result{box-shadow:none;background:#e7f2e3}
.lm-solution-formula{display:block}.lm-solution-formula .lm-eq{justify-content:flex-start}
@media(prefers-reduced-motion:reduce){.lm-big-equation .lm-eq-result{animation:none}}
.lm-formula{font-size:1.28rem;min-height:56px;padding:10px 14px}.lm-formula .lm-eq-frac{font-size:.82em}
@media(max-width:620px){.lm-formula{font-size:1.1rem}}
/* hub: formula tiles on cards, floating manipulatives in the hero */
.lm-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.lm-card-glyph{flex:none;font-size:1.02rem;color:#173e35;background:#e3f1e8;border-radius:11px;padding:6px 10px;min-height:38px;display:grid;place-items:center;box-shadow:inset 0 -2px 0 #0f3d3112;transition:transform .2s}
.lm-card-glyph .lm-eq-op{margin:0 .2em}.lm-card-glyph .lm-eq-frac{font-size:.78em}.lm-card-glyph .lm-eq-unit,.lm-card-glyph .lm-eq-word{font-size:.75em}
.lm-topic-card.lm-blue .lm-card-glyph{background:#e1edf3}.lm-topic-card.lm-peach .lm-card-glyph{background:#fbe8d6}.lm-topic-card.lm-purple .lm-card-glyph{background:#ece7f6}.lm-topic-card.lm-yellow .lm-card-glyph{background:#fff1c4}
.lm-topic-card:hover .lm-card-glyph{transform:rotate(-3deg) scale(1.06)}
.lm-topic-card h3{margin-top:10px}
.lm-hero-float{animation:lm-float 6s ease-in-out infinite}.lm-hero-f2{animation-delay:-2s}.lm-hero-f3{animation-delay:-4s}
@keyframes lm-float{50%{translate:0 -6px}}
@media(prefers-reduced-motion:reduce){.lm-hero-float{animation:none}.lm-topic-card:hover .lm-card-glyph{transform:none}}
.lm-card-glyph .lm-eq-result{background:none;box-shadow:none;color:inherit;padding:0}
@media(min-width:621px){.lm-hero-art{max-height:250px}}
.lmx-mobile-bar{display:none}
@media(max-width:1000px){.lmx-mobile-bar{display:grid;gap:6px;margin-top:10px}.lmx-mobile-bar p{margin:0;font-size:.82rem;line-height:1.45;border-radius:11px;padding:8px 11px}.lmx-mobile-next{background:#fff;border:1px solid #dfe6d9;font-weight:700;color:#24533c}.lmx-mobile-said{background:#fff8e3;border:1px solid #efdfae;color:#2c4a3b}.lmx-mobile-said:empty{display:none}}
.lm-reminder{position:relative;padding-left:72px;min-height:64px;align-items:center}.lm-reminder>span{position:absolute;left:12px;bottom:4px;width:50px;height:54px;font-size:0;background:url(/static/assets/kangaroo.png) center bottom/contain no-repeat}

/* ---------- Step controls under the calculation; the coach button changes moment (next example / practice) ---------- */
.lm-step-nav{display:flex;align-items:center;gap:10px;margin-top:10px}
.lm-step-nav .lm-step-track{flex:1;justify-content:center;margin:0;gap:6px}
.lm-step-prev{width:46px;height:46px;flex:none;border-radius:12px;border:1px solid #c3d0bf;background:#fff;font-size:1.25rem;color:#1f4b3d}.lm-step-prev:hover:not(:disabled){background:#f0f5ec}.lm-step-prev:disabled{opacity:.35}
.lm-step-next{min-height:46px;flex:none;border-radius:12px;padding:10px 18px;background:#173e35;color:#fff;font-weight:800;font-size:.86rem;display:inline-flex;align-items:center;gap:12px;box-shadow:0 3px 0 #092f28;transition:transform .12s,box-shadow .12s}
.lm-step-next:hover{transform:translateY(-1px);box-shadow:0 4px 0 #092f28}.lm-step-next:active{transform:translateY(2px);box-shadow:0 1px 0 #092f28}
.lm-step-next>span[aria-hidden]{font-size:1.15rem;line-height:1}
.lm-step-nav .lm-moment-label{display:none}
.lm-step-next[data-lm-example-next],.lm-step-next[data-lm-practice]{background:#ffcf55;color:#163e38;box-shadow:0 3px 0 #c79a37}
.lm-moment{display:grid;gap:8px;margin-top:auto}
.lm-moment .primary,.lm-moment .secondary{width:100%;min-height:48px;justify-content:space-between;font-size:.86rem;gap:10px;padding:11px 18px}
.lm-moment .primary{box-shadow:0 3px 0 #092f28;animation:lm-moment-in .45s ease-out}
.lm-moment .secondary{display:flex;align-items:center;color:#46604f}
.lm-moment-label{font-weight:600;opacity:.75;margin-left:4px;margin-right:auto;font-variant-numeric:tabular-nums}
.lm-moment-note{margin:0;font-size:.8rem;font-weight:800;color:#2f7d57}.lm-moment-note span{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:#2f7d57;color:#fff;font-size:.7rem;margin-right:6px}
.lm-coach .lm-step-copy{flex:1}
@keyframes lm-moment-in{from{transform:translateY(6px);opacity:.4}to{transform:none;opacity:1}}
@media(max-width:620px){.lm-step-nav{gap:6px}.lm-step-nav .lm-step-track button{width:28px;min-width:28px;height:28px}.lm-step-next{padding:10px 13px;font-size:.8rem;gap:8px}.lm-step-prev{width:42px;height:42px}}
@media(prefers-reduced-motion:reduce){.lm-moment .primary{animation:none}}
.lm-moment .lm-moment-label{font-size:.86rem;line-height:1.2}