:root{color-scheme:light;--ink:#24324b;--muted:#536078;--paper:#fff9f1;--green:#126b59;--mint:#e4eee5;--line:#cdd7cc;--purple:#eee8f5;font-family:Arial,'Trebuchet MS',sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;font-size:18px}*{box-sizing:border-box}body{margin:0;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}button,input,textarea,select{font:inherit;color:inherit}button,a,summary,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.7}button,a,input,textarea,select,summary{outline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #843b1b}a{color:inherit}button{border:1px solid transparent;border-radius:14px;padding:12px 20px;min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;line-height:1.3;background:white}button:hover{filter:brightness(.96)}button svg{width:23px;height:23px;stroke:currentColor;stroke-width:2;fill:none;flex-shrink:0}.primary{background:var(--green);color:white}.secondary{background:#fffdf9;border-color:#899e8d}.textbtn{background:transparent;padding:11px 14px;text-decoration:underline;text-underline-offset:4px}.small,small{font-size:.85rem;line-height:1.6;color:var(--muted)}p{line-height:1.65;margin:0 0 20px}h1,h2{margin:0 0 24px;line-height:1.2}h1{font-size:clamp(28px,4vw,40px);letter-spacing:-.7px}h2{font-size:26px}header{max-width:1080px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:22px 26px}.brand{text-decoration:none;display:flex;align-items:center;gap:10px;font-size:18px;line-height:1.15}.brand 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4px;font-size:32px}.subject-sign{display:grid;place-items:center;width:90px;height:80px;border-radius:22px;background:var(--mint);font-size:40px;font-weight:bold}.swedish .subject-sign{background:var(--purple)}.subject-card .primary{width:100%;margin-top:4px;font-size:22px}.home-bottom{display:flex;justify-content:space-between;gap:15px;align-items:center;padding-top:25px;color:var(--muted);font-size:16px}.resume{display:flex;align-items:center;justify-content:space-between;gap:16px;background:var(--mint);padding:18px 22px;border-radius:20px;margin-bottom:24px}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:15px 0 26px}.page-heading h1{margin:0}.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.quick-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;border:1px solid var(--line);padding:25px 20px;border-radius:22px;background:#fffefa;min-height:210px}.quick-card strong{font-size:24px}.quick-sign{font-size:36px;color:var(--green);height:50px}.start-label{font-size:16px;color:var(--green)}details{border-top:1px solid var(--line);padding:18px 0;margin-top:22px}summary{font-weight:700;cursor:pointer;min-height:50px;padding:12px 0}details p{margin-top:15px}.customise{margin-top:35px}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}.field{margin:20px 0}.field label,legend{display:block;font-weight:700;margin-bottom:10px}.field select{width:100%;padding:12px;border:1px solid #82948a;border-radius:12px;background:#fff;min-height:50px}.field small{display:block;margin-top:8px}fieldset{border:0;padding:0;margin:0}.pills{display:flex;flex-wrap:wrap;gap:8px}.pill{min-width:50px;border-color:#899e8d}.pill[aria-pressed=true]{background:var(--green);color:white}.session{max-width:760px;margin:0 auto}.session-top{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:15px}.steps{display:flex;gap:8px;margin-bottom:22px}.steps i{height:8px;border-radius:6px;flex:1;background:#d9e2d6}.steps .current{background:var(--green);outline:2px solid var(--green);outline-offset:2px}.steps .done{background:#799b82}.exercise{background:#fffefa;border:1px solid var(--line);border-radius:25px;padding:30px}.exercise-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}.question{font-size:clamp(36px,7vw,58px);letter-spacing:0;margin:22px 0 28px;overflow-wrap:anywhere}.question.long{font-size:25px;line-height:1.6;max-width:38ch}.read-block{font-size:22px;line-height:1.75;max-width:52ch;overflow-wrap:anywhere}.passage{border-left:4px solid #b4c9b4;padding:10px 18px;margin:15px 0 25px}.passage-title{font-size:24px;margin:0}.read-unit{border-radius:4px;box-decoration-break:clone;-webkit-box-decoration-break:clone}.reading-now{background:#ffe8a3;outline:2px solid #805f19}.line-focus .passage .read-unit{display:block;margin:9px 0;padding:7px 8px;border-left:3px solid #b7c8b8;background:#f0f3ea}.line-focus .passage .reading-now{background:#ffe8a3}.wide-spacing .read-block,.wide-spacing .question.long{line-height:2;word-spacing:.16em;letter-spacing:.025em}.large-text{font-size:21px}.large-text .read-block,.large-text .question.long{font-size:26px}.answer-line{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.answer-line input{width:190px;max-width:100%;min-height:60px;font-size:28px;background:#fff;border:2px solid #768f7e;border-radius:12px;padding:12px 16px}.answer-line input[inputmode=text]{width:100%;font-size:23px}textarea{width:100%;padding:15px;border:2px solid #768f7e;border-radius:12px;min-height:150px;line-height:1.65;font-size:21px;resize:vertical;background:#fff}.answer-choices{display:grid;gap:12px}.answer-choice{border:2px solid #b6c6b7;justify-content:flex-start;text-align:left;background:#fff;min-height:56px;font-size:21px;overflow-wrap:anywhere}.answer-choice[aria-pressed=true]{background:var(--mint);border-color:var(--green);box-shadow:inset 5px 0 var(--green)}.answer-choice[aria-pressed=true]::before{content:'●';font-weight:bold;color:var(--green)}.fraction-input{width:145px}.fraction-input label{font-size:15px;display:block;margin-bottom:6px}.fraction-input input{width:100%;padding:10px;border:2px solid #768f7e;border-radius:10px;font-size:24px;min-height:50px}.fraction-line{display:block;height:2px;background:var(--ink);margin:9px 0}.main-actions{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:13px;margin-top:18px}.main-actions .primary{font-size:23px;min-height:58px}.main-actions .primary:only-child{grid-column:1/-1}.feedback{line-height:1.5;margin:18px 0}.feedback:empty{display:none}.feedback:not(:empty){background:var(--mint);padding:13px 16px;border-radius:12px}.exercise-bottom{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:20px}.exercise-bottom #sound-status{font-size:14px;color:var(--muted);flex:1}.help{padding:20px;background:var(--purple);border-radius:18px;margin-top:24px}.help-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.help h2{font-size:20px;margin:0}.help-text{font-size:21px;margin:14px 0 20px}.self-check{padding:0;list-style:none}.self-check label{display:flex;align-items:flex-start;gap:10px;padding:10px 0;line-height:1.5}.self-check input{min-width:24px;min-height:24px}.math-model{margin:10px 0 24px;padding:18px;background:#f0f4eb;border-radius:16px}.math-model figcaption{font-size:15px;line-height:1.5;color:var(--muted);margin-top:12px}.counter-set{display:grid;grid-template-columns:repeat(5,16px);gap:7px;width:max-content;max-width:100%}.counter{width:16px;height:16px;display:block;border-radius:50%;background:var(--green);border:1px solid var(--green);position:relative}.counter.second{background:#725890;border-color:#725890}.counter.removed{background:#fff}.counter.removed::after{content:'';position:absolute;width:21px;height:2px;background:#843b1b;transform:rotate(-45deg);top:6px;left:-3px}.counter-add{display:flex;gap:18px;align-items:center;flex-wrap:wrap}.counter-add>b{font-size:28px}.group-grid{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.dot-group{padding:10px;border:2px solid #9bb09c;border-radius:12px}.dot-group .counter-set{grid-template-columns:repeat(5,12px);gap:5px}.dot-group .counter{height:12px;width:12px}.empty-group{width:45px;min-height:45px;border:2px dashed #789780;border-radius:50%;display:grid;place-items:center}.fractionbar{display:flex;border:2px solid var(--green);height:36px}.fractionbar i{flex:1;border-right:1px solid var(--green)}.fractionbar i:last-child{border:0}.fractionbar i.filled{background:#729c80}.place-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));text-align:center;gap:8px;font-size:17px}.place-grid b{background:white;padding:8px;border-radius:7px;font-size:24px}.word-help{margin:0 0 22px;font-size:17px}.word-help dl{margin:0}.word-help dt{font-weight:bold;margin-top:12px}.word-help dd{margin:4px 0 12px;line-height:1.6}.scene{max-width:220px;margin:0 0 22px}.scene svg{width:100%;height:auto}.finish{max-width:650px;margin:35px auto;text-align:center}.finish-mark{width:80px;height:80px;border-radius:50%;display:grid;place-items:center;background:var(--mint);color:var(--green);font-size:45px;margin:0 auto 25px}.finish .actions{justify-content:center}.finish details{text-align:left;margin-top:35px}.actions{display:flex;gap:12px;flex-wrap:wrap}.result-list{margin:10px 0}.result-list>div{display:flex;justify-content:space-between;gap:20px;padding:10px 0;border-bottom:1px solid var(--line);line-height:1.5}.result-list dd{font-weight:bold}.history,.about{max-width:750px;margin:auto}.history details summary{line-height:1.6}.about a{overflow-wrap:anywhere}.info{background:var(--mint);padding:16px 20px;border-radius:14px}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.dialog-heading h2{margin:0}.support-options label,.guest-toggle{display:flex;gap:12px;align-items:center;min-height:50px;padding:10px 0;line-height:1.5}.support-options input,.guest-toggle input{width:24px;height:24px;flex-shrink:0;accent-color:var(--green)}.pause-actions{display:grid;gap:15px;margin-bottom:20px}dialog{width:calc(100% - 28px);max-width:560px;max-height:90dvh;overflow:auto;padding:28px;border:1px solid var(--line);border-radius:22px;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#24324b66}footer{max-width:1028px;margin:auto;padding:22px 26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:18px;font-size:14px;color:var(--muted);border-top:1px solid var(--line)}footer a{min-height:44px;display:inline-flex;align-items:center}.in-session header{padding-top:12px;padding-bottom:10px}.in-session header nav,.in-session footer{display:none}.in-session main{padding-top:15px}.skip{position:absolute;top:-100px;left:10px;background:white;padding:15px;z-index:20}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}
@media(max-width:640px){header{padding:16px 18px;gap:10px;flex-wrap:wrap}.brand{font-size:16px}nav{order:3;width:100%;justify-content:center;gap:0}nav a{padding:14px 11px;font-size:15px}.brandmark{height:40px;width:40px;font-size:27px}main{padding:22px 16px 40px}.home{margin-top:12px}.subject-grid{gap:12px}.subject-card{padding:22px 12px;border-radius:20px}.subject-card h2{font-size:25px}.subject-sign{width:65px;height:65px;font-size:31px;border-radius:18px}.subject-card button{padding:12px 10px;font-size:18px}.subject-card .textbtn{font-size:15px}.home-bottom{align-items:flex-start;font-size:15px}.home-bottom>span{max-width:135px;line-height:1.6}.resume{flex-wrap:wrap;padding:16px}.quick-grid{grid-template-columns:1fr}.quick-card{min-height:100px;display:grid;grid-template-columns:50px 1fr auto;text-align:left;gap:14px;justify-items:start}.quick-card strong{font-size:22px}.quick-sign{display:grid;place-items:center;font-size:31px}.start-label{font-size:16px}.settings-grid{grid-template-columns:1fr;gap:0}.exercise{padding:20px 16px;border-radius:20px}.exercise-tools{gap:5px}.exercise-tools button{padding:12px 13px}.question.long{font-size:22px;line-height:1.6}.read-block{font-size:21px;line-height:1.7}.passage{padding:7px 10px}.main-actions{gap:10px}.main-actions button{padding:12px}.help{padding:16px}.help-heading{flex-wrap:wrap;gap:4px}.help-text{font-size:20px}.answer-choice{font-size:20px;padding:14px}.dialog-heading .primary{padding:12px}.place-grid{font-size:13px}.group-grid{gap:7px}.dot-group{padding:8px}.counter-add{gap:12px}.page-heading{margin-top:0}.large-text .read-block,.large-text .question.long{font-size:25px}.wide-spacing .read-block{line-height:2}.session-top{font-size:16px}footer{padding:18px;font-size:13px}.finish{margin-top:25px}}
.subject-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.english .subject-sign{background:#f5dfa2}.picture-option{display:block;width:100%;max-width:170px;margin:auto}.picture-option svg{display:block;width:100%;height:auto;stroke-width:initial;fill:initial}.answer-choice:has(.picture-option){justify-content:center;min-height:125px;padding:12px}.answer-choices:has(.picture-option){grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.english-target{margin:12px 0 22px;padding:16px 18px;border-left:4px solid #c49c3b;background:#fff8e3;border-radius:0 12px 12px 0}.english-content .read-unit{margin-right:.2em}.english-example{margin-top:20px}.audio-options,.audio-instruction{font-size:16px;margin-top:8px}.english-content{overflow-wrap:anywhere}#english-audio{display:none}#english-transcript{margin:12px 0 24px}#english-transcript .english-content{margin:14px 0}.saved-draft{white-space:pre-wrap;overflow-wrap:anywhere;background:#fff;padding:15px;border-radius:12px}
@media(max-width:700px){.subject-grid{grid-template-columns:1fr}.subject-card{display:grid;grid-template-columns:64px minmax(0,1fr) 94px;gap:8px 14px;text-align:left;padding:18px}.subject-sign{grid-row:1/3;width:62px;height:62px;font-size:28px}.subject-card h2{grid-column:2;grid-row:1;font-size:25px}.subject-card .primary{grid-column:3;grid-row:1/3;margin:0;min-height:55px}.subject-card .textbtn{grid-column:2;grid-row:2;justify-self:start;padding:8px 0;min-height:44px;font-size:15px}.picture-option{max-width:140px}.answer-choices:has(.picture-option){gap:7px}.answer-choice:has(.picture-option){min-height:98px;padding:6px}.answer-choice[aria-pressed=true]:has(.picture-option)::before{position:absolute;align-self:flex-start}.answer-choice:has(.picture-option){position:relative}.english-target{padding:12px}.home-bottom{flex-wrap:wrap}.home-bottom>span{max-width:none}}
@media(max-width:360px){.subject-card{grid-template-columns:44px minmax(0,1fr) 82px;gap:7px 10px;padding:15px 12px}.subject-sign{width:44px;height:54px;font-size:23px;border-radius:12px}.subject-card h2{font-size:22px}.subject-card .primary{font-size:18px;padding:10px 7px}.subject-card .textbtn{font-size:14px}.answer-choice:has(.picture-option){min-height:87px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
@media(forced-colors:active){button,.counter,.steps i,.answer-choice{border:2px solid ButtonText}.reading-now{outline:3px solid Highlight}.answer-choice[aria-pressed=true]{outline:3px solid Highlight}}
/* NO shares the existing calm flow. Diagrams supplement short language. */
@media(min-width:701px){.subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.science .subject-sign{background:#d8e7df;color:#1c6352}.no-figure{margin:1rem 0;padding:.5rem;border-radius:18px;background:#f3f6ef;text-align:center}.no-figure svg{display:block;width:min(100%,240px);height:140px;margin:auto}.no-figure figcaption{font-size:1rem;margin:.3rem auto;max-width:28rem}#science-audio{display:none}.no-limit,.no-sources{font-size:.9rem}.no-sources{margin:.6rem 0 1rem}.no-sources summary{padding:.4rem 0}.no-sources a{overflow-wrap:anywhere}.no-sequence{display:flex;align-items:center;justify-content:center;gap:.5rem;flex-wrap:wrap;margin:.7rem 0}.no-sequence span{border:1px solid #b8c9bc;padding:.4rem .6rem;border-radius:12px}.no-comparison{border-left:4px solid #46816e;background:#edf4ee;padding:.5rem 1rem;margin:1rem 0}.no-comparison p{margin:.5rem 0}.no-run{margin:.6rem 0}.no-reading{background:#fff0b7!important;outline:2px solid #8a6928;outline-offset:2px}.answer-choices:has(.picture-option){grid-template-columns:repeat(3,minmax(0,1fr))}
/* Room for touch and keyboard use in the optional source panel. */
.no-sources a{display:inline-flex;align-items:center;min-height:44px;line-height:1.5}

@media(max-width:360px){.quick-card{grid-template-columns:35px minmax(0,1fr) auto;padding:18px 12px;gap:8px}.quick-card strong{font-size:20px;overflow-wrap:anywhere}}