@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--paper:#f6f5ef;--ink:#282939;--muted:#74756f;--border:#ddddd4;--purple:#d9cdff;--green:#d8edc7;--display:'Space Grotesk',sans-serif;--body:'DM Sans',sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:14px}button,input,select{font:inherit;color:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button{border:0}button:disabled{cursor:default;opacity:.6}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #7b5acd;outline-offset:4px}input:focus,select:focus{outline:2px solid #8f77c5;outline-offset:2px}h1,h2,h3,p{margin:0}[hidden]{display:none!important}.site-header{height:100px;max-width:1320px;margin:auto;padding:0 52px;display:flex;align-items:center;border-bottom:1px solid var(--border);justify-content:space-between}.brand{font-family:var(--display);font-weight:700;font-size:39px;letter-spacing:-2.7px;display:flex;gap:5px;align-items:center}.brand-star{font-size:32px;color:#8b70bd;line-height:1}.header-note{font-size:10px;letter-spacing:1.7px;color:#707169}.quiet-button{background:transparent;padding:8px 0;font-size:12px;font-weight:600;display:inline-flex;gap:8px;align-items:center}.quiet-button:hover{text-decoration:underline}main{max-width:1216px;padding:0 0 0;margin:auto}.intro{display:flex;justify-content:space-between;align-items:center;padding:65px 0 58px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:1.8px}.tiny-star{font-size:15px;color:#8e73bf;margin-right:6px}h1{font-family:var(--display);font-weight:600;letter-spacing:-3.5px;line-height:1.08;font-size:66px}.intro h1{margin:19px 0 20px}.intro h1 span{color:#8871b7}.intro-copy{color:#74756f;line-height:1.8;font-size:14px}.math-art{width:310px;height:247px;position:relative;margin-right:48px;flex-shrink:0}.art-tile{position:absolute;width:100px;height:104px;display:grid;place-items:center;font-family:var(--display);font-size:74px;line-height:1;border:1.5px solid var(--ink);border-radius:20px;box-shadow:3px 5px 0 var(--ink)}.tile-purple{left:36px;top:14px;background:var(--purple);transform:rotate(-13deg);z-index:2}.tile-green{left:139px;top:63px;background:var(--green);transform:rotate(12deg);z-index:3}.tile-yellow{left:47px;top:119px;background:#f9e7a2;transform:rotate(7deg);z-index:4}.art-orbit{position:absolute;border:1px dashed #cbc7bb;border-radius:50%;width:300px;height:190px;top:17px;left:0;transform:rotate(-25deg)}.orbit-two{transform:rotate(35deg);width:220px;height:240px;left:20px;top:0}.art-spark{position:absolute;right:0;top:10px;font-size:44px;color:#b49cd5;transform:rotate(10deg)}.art-dot{position:absolute;background:#9aaf82;width:11px;height:11px;border-radius:50%;left:0;top:145px}.art-caption{position:absolute;bottom:-2px;right:9px;font-family:var(--display);font-size:9px;letter-spacing:1.7px;transform:rotate(-9deg)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 343px;gap:42px}.section-heading{display:flex;justify-content:space-between;align-items:center;margin:0 0 23px;gap:15px}.section-heading>div{display:flex;align-items:center;gap:12px}.step{font-family:var(--display);border:1px solid #cacac0;width:25px;height:25px;border-radius:50%;display:grid;place-items:center;font-size:10px}h2{font-family:var(--display);font-size:20px;font-weight:600;letter-spacing:-.6px}.section-note{font-size:8px;letter-spacing:1.3px;color:#85867c}.mode-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.mode-card{position:relative;background:#fdfcf8;border:1px solid var(--border);border-radius:13px;padding:19px 20px 16px;text-align:left;min-height:144px;transition:transform .15s,border-color .15s,box-shadow .15s}.mode-card:hover{transform:translateY(-2px);border-color:#ae9dc9}.mode-card[aria-pressed=true]{border:1.5px solid #8d74b5;box-shadow:0 0 0 2px #e5ddf1;background:#f1edf9}.mode-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.mode-icon{width:35px;height:35px;display:grid;place-items:center;border-radius:9px;font-family:var(--display);font-size:27px;font-weight:500;line-height:1;background:var(--purple)}.mode-icon.green{background:var(--green)}.mode-icon.orange{background:#f7dac0}.mode-icon.blue{background:#d5e5f4}.mode-icon.pink{background:#f1d4e1}.mode-icon.yellow{background:#f4e6b5}.mode-icon.mint{background:#d4e9de}.mode-icon.lilac{background:#e1dcf4}.mode-check{border:1px solid #d5d4cb;width:17px;height:17px;border-radius:50%;color:transparent;display:grid;place-items:center;font-size:10px;margin-top:3px}.mode-card[aria-pressed=true] .mode-check{background:#8d74b5;border-color:#8d74b5;color:white}.mode-card strong{display:block;font-family:var(--display);font-size:16px;letter-spacing:-.3px;margin-bottom:4px}.mode-description{font-size:11px;color:#7a7b74}.mode-example{position:absolute;right:19px;top:31px;margin-right:24px;color:#929086;font-size:11px;font-family:var(--display)}.encouragement{display:flex;gap:15px;align-items:center;margin:26px 0;color:#7e7f75;font-size:12px;line-height:1.7}.encouragement>span{font-size:35px;color:#a3ae8e}.encouragement strong{font-weight:500;color:#4e5146}.round-panel{background:#eeeee6;border:1px solid #deded3;border-radius:15px;padding:25px 24px;height:fit-content}.round-panel .section-heading{margin-bottom:27px}.round-panel h2{font-size:18px}.round-panel .step{border-color:#c8c9bd}.field-label,legend{display:block;font-size:11px;font-weight:650;margin:0 0 9px}.field-label span{color:#85867e;font-weight:400;font-size:10px;margin-left:4px}input,select{background:#fafaf6;border:1px solid #d7d8ce;border-radius:7px;padding:12px;width:100%;font-size:12px}input::placeholder{color:#999b90}fieldset{border:0;padding:0;margin:23px 0}legend{padding:0}.segments{display:flex;border:1px solid #d4d5ca;padding:3px;border-radius:8px;gap:3px;background:#e5e6dc}.segments button{flex:1;padding:10px 2px;background:transparent;border-radius:5px;font-size:10px;color:#75776c}.segments button[aria-pressed=true]{background:#fffefa;color:#373a2c;box-shadow:0 1px 4px #3331;font-weight:650}.option-hint{font-size:10px;line-height:1.7;color:#7e8075;margin-top:8px}.parent-settings{margin-top:24px;border-top:1px solid #d5d6c9;border-bottom:1px solid #d5d6c9;padding:16px 0}summary{cursor:pointer;font-size:11px;list-style:none;display:flex;gap:7px;align-items:center}summary::-webkit-details-marker{display:none}summary span:last-child{margin-left:auto}.parent-settings[open] summary{margin-bottom:18px}.parent-settings .field-label{margin-top:14px}.round-summary{display:flex;justify-content:space-between;margin:23px 0 15px;font-size:10px;color:#6d7062}.primary-button{background:var(--ink);color:#fffefa;border:1px solid var(--ink);border-radius:8px;padding:16px 22px;font-size:13px;font-weight:550;transition:background .15s,transform .15s}.primary-button:hover{background:#45445e;transform:translateY(-1px)}.start-button{display:flex;align-items:center;justify-content:space-between;width:100%;font-size:14px}.start-button span{font-size:20px;font-weight:400}.start-note{font-size:9px;text-align:center;color:#85877a;margin-top:12px}.how-it-works{border-top:1px solid var(--border);padding:29px 0;display:flex;align-items:center;gap:33px;margin-top:21px}.how-it-works>div{display:flex;gap:12px;align-items:center}.how-it-works>div span{font-family:var(--display);font-size:10px;color:#8e8f83}.how-it-works p{font-size:11px;color:#63675a}.how-arrow{color:#b1b3a5}.how-star{margin-left:auto;font-size:30px;color:#b4a2cf}footer{max-width:1320px;margin:0 auto;padding:28px 52px;border-top:1px solid var(--border);display:flex;gap:20px;align-items:center}.footer-brand{font-size:25px;letter-spacing:-1.8px}.footer-brand span{font-size:20px;color:#8b70bd}footer p{font-size:10px;color:#898c7f}footer>span{margin-left:auto;font-size:8px;letter-spacing:1.3px;color:#8c8e83}
#game-view{max-width:800px;margin:48px auto 70px}.game-top{display:flex;justify-content:space-between;align-items:center;gap:15px}.game-level{font-size:11px;background:#e8e1f3;padding:7px 13px;border-radius:20px}.game-stats{display:flex;justify-content:space-between;margin:35px 0 24px}.game-stats>div{display:flex;flex-direction:column;gap:7px}.game-stats>div:nth-child(2){text-align:center}.game-stats>div:last-child{text-align:right}.game-stats span,.result-stats span{font-size:9px;letter-spacing:1.5px;color:var(--muted)}.game-stats strong{font-family:var(--display);font-size:30px;font-weight:500;font-variant-numeric:tabular-nums}.timer-urgent{color:#b8403c}.progress-track{height:5px;background:#e6e4db;border-radius:10px;overflow:hidden}.progress-track>div{background:#9d85c8;height:100%;transition:width .2s}.question-card{background:#fffefa;border:1px solid var(--border);border-radius:18px;padding:45px 50px 25px;margin-top:24px;text-align:center}.question-card>.eyebrow{color:#838474}.equation{font-size:82px;font-family:var(--display);font-weight:500;letter-spacing:-4px;margin:38px 0}.question-title{font-family:var(--display);font-size:24px;margin:28px 0 20px;letter-spacing:-.6px}#answer-form{max-width:360px;margin:auto}#answer-label{display:block;font-size:12px;margin-bottom:10px;color:#74786b}.answer-row{display:flex;gap:10px}.answer-row input{font-family:var(--display);text-align:center;font-size:28px;min-width:0;background:var(--paper)}.answer-row .primary-button{white-space:nowrap;min-width:116px}#answer-hint{font-size:10px;color:var(--muted);margin-top:12px}#feedback{min-height:53px;padding-top:20px;font-weight:600;font-size:14px}#feedback.correct{color:#4b783c}#feedback.incorrect{color:#aa5045}#skip-question{color:#7d8075;font-size:11px}.game-bottom{text-align:center;color:#8a8b7f;font-size:12px;margin-top:25px}.clock{width:195px;height:195px;display:block;margin:20px auto}.clock text{font-family:var(--display);font-size:13px;fill:var(--ink)}.number-line{width:100%;max-width:570px;display:block;margin:30px auto}.number-line text{font-family:var(--display);font-size:16px;fill:var(--ink)}#results-view{max-width:800px;margin:50px auto 70px}.result-card{text-align:center;background:#f1edf8;border:1px solid #d6cbe9;border-radius:20px;padding:35px 35px 30px}.result-star{color:#9479c2;font-size:60px;line-height:1;margin-bottom:20px}.result-card h1{font-size:46px;letter-spacing:-2px;margin:12px 0}.result-card>p:not(.eyebrow){line-height:1.7}#result-message{color:#74707f;font-size:13px}.result-stats{display:flex;justify-content:center;gap:65px;margin:30px 0}.result-stats>div{display:flex;flex-direction:column;gap:6px}.result-stats strong{font-family:var(--display);font-size:36px;font-weight:500}.goal-result{font-size:14px;font-weight:600}.reward-result{background:var(--green);border-radius:8px;padding:12px;margin:14px auto 0;max-width:400px}.result-actions{display:flex;justify-content:center;gap:12px;margin-top:25px}.secondary-button{border:1px solid #c8c8bf;background:transparent;border-radius:8px;padding:13px 20px;font-size:12px}.secondary-button:hover{background:#e7e5dc}.review{margin-top:35px}.review .section-heading{margin-bottom:10px}.review>p{font-size:12px;color:var(--muted);margin-bottom:20px}.review-row{display:grid;grid-template-columns:30px 1fr 140px 85px;align-items:center;gap:15px;border-bottom:1px solid var(--border);padding:15px 5px;font-size:13px}.review-row .review-icon{background:#e1ead7;color:#4c6e34;width:24px;height:24px;border-radius:50%;display:grid;place-items:center}.review-row.missed .review-icon{background:#f2dfd6;color:#a25942}.review-answer{font-size:11px;color:var(--muted)}.review-correct{font-size:11px;color:#647752;text-align:right}#history-view{min-height:65vh;padding:40px 0 70px}.history-heading{display:flex;justify-content:space-between;align-items:center;margin-top:35px}.history-heading h1{font-size:50px;margin:15px 0}.history-heading .secondary-button{align-self:center}.history-row{display:grid;grid-template-columns:1.4fr 1fr 1fr auto;gap:20px;border:1px solid var(--border);background:#fffefa;border-radius:10px;padding:20px;margin-top:12px;align-items:center}.history-row p{font-size:11px;color:var(--muted);margin-top:5px}.history-row>span{font-family:var(--display);font-size:20px}.history-empty{padding:60px 20px;text-align:center;color:var(--muted);border:1px dashed var(--border);border-radius:12px;margin:30px 0}dialog{border:1px solid var(--border);border-radius:15px;padding:30px;max-width:440px;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#28293966}dialog p{font-size:13px;color:var(--muted);line-height:1.7;margin-top:12px}
@media(min-width:1450px){main{max-width:1216px}.site-header,footer{max-width:1320px}}@media(max-width:1350px){main{margin:0 52px}.workspace{gap:30px;grid-template-columns:minmax(0,1fr) 325px}.section-note{display:none}.intro h1{font-size:60px}.math-art{margin-right:20px}}@media(max-width:1000px){.site-header{padding:0 30px;height:85px}main{margin:0 30px}.intro{padding:45px 0}.intro h1{font-size:52px}.math-art{transform:scale(.85);transform-origin:right center;width:260px;margin:0}.workspace{gap:25px;grid-template-columns:minmax(0,1fr) 290px}.round-panel{padding:23px 18px}.mode-card{padding:16px 14px;min-height:146px}.mode-card strong{font-size:14px}.mode-description{font-size:10px}.mode-example{display:none}.header-note{font-size:8px;letter-spacing:1px}.how-it-works{gap:20px}footer{padding:25px 30px}}@media(max-width:740px){.header-note{display:none}.site-header{height:76px;padding:0 22px}.brand{font-size:34px}main{margin:0 22px}.intro{padding:35px 0 32px;position:relative}.intro h1{font-size:47px;letter-spacing:-2.7px}.intro-copy{font-size:12px}.intro .eyebrow{font-size:8px;letter-spacing:1.4px}.math-art{display:none}.workspace{grid-template-columns:1fr;gap:8px}.section-heading{margin-bottom:18px}h2{font-size:19px}.mode-card{min-height:143px;padding:17px}.mode-card strong{font-size:15px}.mode-description{font-size:10px;line-height:1.5;display:block}.mode-example{display:block;font-size:9px;top:31px;right:6px}.encouragement{margin:22px 0}.round-panel{padding:25px;margin-top:5px}.round-panel h2{font-size:20px}.segments button{font-size:12px}.field-label,legend{font-size:12px}.round-panel input,.round-panel select{font-size:13px}.option-hint{font-size:11px}.how-it-works{gap:15px;flex-wrap:wrap;justify-content:space-between;padding:25px 0}.how-it-works>div{gap:7px}.how-it-works p{font-size:9px}.how-arrow,.how-star{display:none}footer{padding:22px;flex-wrap:wrap;gap:15px}footer p{font-size:9px}footer>span{width:100%;font-size:7px;margin-left:0}.game-top .eyebrow{font-size:9px}#game-view{margin:30px auto 45px}.question-card{padding:30px 17px 20px}.equation{font-size:66px;margin:40px 0}.game-stats strong{font-size:25px}.game-stats span{font-size:8px}.question-title{font-size:21px}.answer-row .primary-button{padding:14px;min-width:100px}.result-card{padding:28px 17px}.result-card h1{font-size:35px}.result-stats{gap:30px}.result-stats strong{font-size:28px}.result-actions{flex-wrap:wrap}.result-actions button{flex:1;white-space:nowrap}.review-row{grid-template-columns:25px 1fr;gap:7px 12px}.review-answer{grid-column:2}.review-correct{grid-column:2;text-align:left}.review .quiet-button{font-size:10px}.review h2{font-size:17px}.history-heading{align-items:flex-start;gap:10px}.history-heading h1{font-size:36px;letter-spacing:-2px}.history-heading .secondary-button{font-size:10px;padding:10px}.history-row{grid-template-columns:1fr 1fr;gap:15px}.history-row>span{font-size:17px}.history-row>span:last-child{font-size:12px}.clock{width:180px;height:180px}.number-line{margin:30px auto}input,select{font-size:16px}#setup-form input,#setup-form select{font-size:16px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}@media print{body{background:white}.site-header,footer,#setup-view,#game-view,#history-view,.result-actions,#print-results,dialog{display:none!important}main{margin:0}#results-view{display:block!important;margin:0;max-width:none}.result-card{padding:15px;border:1px solid #bbb}.result-star{display:none}.review-row{break-inside:avoid}.result-card h1{font-size:30px}.result-stats{margin:15px 0}.review{margin-top:20px}}

.learning-tip{max-width:420px;margin:0 auto 18px;padding:13px 16px;background:#f2edf9;border-radius:9px;font-size:12px;line-height:1.7;color:#585067;text-align:left}.review-tip{grid-column:2 / -1;font-size:12px;color:#6b6076;line-height:1.7}#retry-note{max-width:470px;margin:14px auto 0}.result-actions{flex-wrap:wrap}