@charset "UTF-8";
:root{--paper:#f8f7f2;--ink:#233e37;--muted:#64726a;--line:#d9ded3;--sun:#f4bd55;--blue:#346b9a;--green:#e9efe3;--white:#fffefa;--orange:#aa531c;--radius:20px;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{touch-action:manipulation}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}button{color:inherit}h1,h2,h3,p{margin:0}p{line-height:1.75}h1{font-size:42px;line-height:1.25;letter-spacing:-1.5px;font-weight:650}h2{font-size:26px;line-height:1.45;letter-spacing:-.6px}h3{font-size:20px;line-height:1.5}small{font-size:13px}svg{max-width:100%;display:block}button{min-height:44px}input,textarea{width:100%;border:1px solid #b8c5ba;border-radius:10px;background:var(--white);padding:13px 15px;font-size:18px;color:var(--ink)}textarea{resize:vertical;min-height:90px}label{display:block;line-height:1.5;font-size:15px}label input,label 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svg{margin-top:20px}.login-form{align-self:center;padding:30px;background:var(--white);border:1px solid var(--line);border-radius:20px}.login-form h2{font-size:25px}.login-form p{font-size:14px;margin:12px 0 24px;color:var(--muted)}.form-stack{display:grid;gap:20px}.error{color:#984220;font-size:14px;line-height:1.6}.notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#233e37;color:#fff;padding:14px 22px;max-width:min(90vw,560px);border-radius:12px;z-index:20;box-shadow:0 5px 30px #233e3720;line-height:1.6;font-size:14px}.lesson-top{display:flex;gap:22px;align-items:center;margin-bottom:24px}.back{display:inline-flex;gap:8px;align-items:center;padding:10px 0;border:0;background:none;font-size:14px;white-space:nowrap}.lesson-progress{display:flex;gap:5px;flex:1;max-width:500px;margin:auto}.lesson-progress span{height:5px;flex:1;border-radius:3px;background:#dfe4d9}.lesson-progress span.done{background:#6b8c6f}.lesson-progress 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svg{width:100%}.stage-caption{margin-top:16px;font-size:13px;text-align:center;line-height:1.7;color:#5a7055}.question-panel{padding:34px;display:flex;flex-direction:column;min-width:0}.question-panel h1{font-size:27px;letter-spacing:-.5px;line-height:1.5;margin-bottom:14px}.question-panel .lead{font-size:16px;color:var(--muted);line-height:1.85;margin-bottom:24px}.phase{font-size:12px;color:var(--blue);margin-bottom:14px;letter-spacing:.6px}.takeaway{border-left:3px solid var(--sun);padding:12px 15px;background:#faf5e8;line-height:1.85;font-size:15px;margin:22px 0}.desk-action{margin-top:auto;padding-top:22px}.instruction{font-size:13px;color:var(--muted);margin-bottom:16px;line-height:1.7}.choice-list{display:grid;gap:11px;margin:6px 0 18px}.choice{padding:14px 17px;border:1px solid #ccd4c6;border-radius:10px;background:transparent;text-align:left;display:flex;align-items:center;gap:13px;font-size:16px;line-height:1.65;min-height:55px}.choice-letter{font-size:12px;border:1px solid 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h3{font-size:19px;margin-bottom:10px}.feedback p{font-size:15px}.feedback .answer-line{margin-top:8px;font-size:14px;color:#617157}.small-note{font-size:12px;color:var(--muted);margin-top:10px;line-height:1.7}.number-pad{display:flex;flex-wrap:wrap;justify-content:center;gap:5px;margin-top:12px}.number-pad button{border:1px solid #ccd7c5;background:#fffefa;border-radius:8px;min-width:39px;min-height:44px;padding:6px;font-size:15px}.number-pad button.selected{background:var(--ink);color:white}.range-label{font-size:13px;color:#50654b;margin-top:18px}.range-label span{float:right;font-variant-numeric:tabular-nums}.range-label input{padding:0;border:0;background:transparent;min-height:32px;accent-color:var(--ink)}.fraction-grid{display:flex;border:2px solid #346b9a;border-radius:10px;overflow:hidden;margin:55px 0 20px;height:95px;background:white}.fraction-grid button{flex:1;border:0;border-right:2px solid #346b9a;background:white;color:var(--blue);font-size:21px;min-width:0}.fraction-grid button:last-child{border:0}.fraction-grid button.selected{background:#346b9a;color:white}.fraction-grid button:focus-visible{outline-offset:-5px;outline-color:#f4bd55}.fraction-readout{text-align:center;font-size:35px;font-weight:550;color:var(--blue)}.stage-controls{margin-top:20px;text-align:center}.equation{font-size:23px;text-align:center;font-variant-numeric:tabular-nums;letter-spacing:1px;margin-top:10px}.summary-wrap{max-width:750px;margin:35px auto;text-align:center}.summary-mark{font-size:35px;width:76px;height:76px;border-radius:50%;display:grid;place-items:center;background:var(--sun);margin:0 auto 22px}.summary-wrap h1{font-size:34px;margin-bottom:18px}.summary-wrap p{color:var(--muted);margin-bottom:18px}.summary-evidence{background:var(--green);padding:24px;border-radius:18px;margin:28px 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p{font-size:14px;margin-top:8px;overflow-wrap:anywhere}.evidence-row details{margin-top:10px;font-size:14px;color:var(--muted)}.evidence-row summary{cursor:pointer;min-height:35px;padding:6px 0}.record-answer{display:flex;gap:20px;flex-wrap:wrap}.conflict{border:1px solid #caa969;background:#fff7e9;border-radius:12px;margin:15px 0;padding:16px;font-size:14px;line-height:1.7}.conflict button{margin-top:10px}.saved-reason{white-space:pre-wrap;overflow-wrap:anywhere}.diagram-text{font-family:inherit}.angle-controls{max-width:350px;margin:auto;width:100%}.inline-error{margin-top:12px;color:#984220;font-size:14px;line-height:1.6}.stack-actions{display:flex;justify-content:center;gap:15px;flex-wrap:wrap}
@media(min-width:1450px){main{padding-top:50px}.hero{min-height:380px}.hero-copy{padding-top:45px}.hero h1{font-size:46px}}
@media(max-width:1190px){main{margin:0 30px}.topbar{padding:20px 30px}.lesson-row{grid-template-columns:35px 1fr .85fr auto;gap:14px}.check-banner{grid-template-columns:1fr}.check-groups{justify-content:flex-start}.hero-copy{padding:30px 0 30px 28px}.hero-visual{padding-right:20px}}
@media(max-width:740px){.topbar{padding:16px 20px 0;gap:12px;flex-wrap:wrap;min-height:105px}.brand{font-size:20px}.brand-symbol{width:33px;height:33px;font-size:27px;border-radius:10px}.account{font-size:12px;gap:5px}.main-nav{order:3;width:100%;justify-content:space-between;gap:20px;font-size:13px}.main-nav a{padding-bottom:14px}main{margin:0;padding:24px 20px 45px}.hello{font-size:12px;margin-bottom:18px}.hello strong{font-size:16px}.hello .duration{display:none}.hero{grid-template-columns:1fr;min-height:0;border-radius:20px}.hero-copy{padding:28px 25px 0}.hero h1{font-size:34px;letter-spacing:-.9px}.hero .lead{font-size:15px;max-width:none}.hero-action{margin-top:22px}.hero .primary{width:100%;justify-content:space-between}.hero-visual{padding:8px 25px 22px;height:218px}.hero-visual svg{height:100%;width:auto;max-width:100%;transform:rotate(-2deg)}.lesson-row{grid-template-columns:25px 1fr auto;gap:9px;padding:20px 0}.lesson-state{grid-column:2/4;font-size:13px;margin-top:0}.lesson-row .lesson-actions{grid-column:3;grid-row:1/2;flex-direction:column}.lesson-row .secondary{padding:8px 13px;min-width:74px;font-size:13px}.lesson-row h3{font-size:17px}.lesson-meta{font-size:12px}.routes-section{margin-top:27px}.section-heading{margin-bottom:15px}.section-heading h2{font-size:20px}.section-heading span{font-size:12px}.check-banner{padding:24px 20px;gap:16px;margin-top:26px}.check-banner h3{font-size:19px}.check-groups{display:grid;grid-template-columns:1fr;gap:8px}.check-groups button{min-height:50px;display:flex;align-items:center;justify-content:space-between;gap:10px}.check-groups small{margin:0;font-size:12px}.due-banner{padding:15px;align-items:flex-start;flex-direction:column}.lesson-top{gap:12px;margin-bottom:17px}.lesson-progress{gap:3px}.learn-title{align-items:flex-start;gap:10px;margin-bottom:15px}.learn-title p{font-size:12px}.save-status{font-size:11px;white-space:nowrap}.learning-desk{grid-template-columns:1fr;border-radius:17px;min-height:0}.stage{padding:32px 20px 20px;border-right:0;border-bottom:1px solid var(--line);min-height:230px}.stage-label{top:14px;left:20px;font-size:11px}.stage svg{max-height:225px}.question-panel{padding:24px 21px}.question-panel h1{font-size:23px;margin-bottom:12px}.question-panel .lead{font-size:15px;margin-bottom:16px}.takeaway{font-size:14px;margin:16px 0}.fraction-grid{height:70px;margin:15px 0}.fraction-readout{font-size:29px}.stage-caption{font-size:12px;margin-top:12px}.stage-controls{margin-top:12px}.equation{font-size:20px}.choice{font-size:15px;padding:12px}.question-only .question-panel{padding:26px 21px}.choice-letter{width:22px;height:22px}.answer-actions .primary{flex:1}.help-line{align-items:flex-start;flex-wrap:wrap}.summary-wrap{margin:20px 0}.summary-wrap h1{font-size:29px}.concept-summary{grid-template-columns:1fr;gap:12px;margin:24px 0}.concept{padding:15px 18px;border-top:0;border-left:3px solid #97ad8d}.concept h3{display:inline-block;margin-right:12px}.concept .pill{margin-top:0}.records-head{display:block}.records-head h1{font-size:29px}.records-head .secondary{margin-top:16px}.evidence-top{flex-wrap:wrap;gap:8px}.login-wrap{grid-template-columns:1fr;gap:25px;margin:5px 0}.login-visual{padding:0}.login-visual h1{font-size:35px}.login-visual svg{display:none}.login-form{padding:25px}.preview-note{padding:8px 16px;text-align:left;font-size:11px}.number-pad{gap:4px}.number-pad button{min-width:36px}.footer-note{font-size:12px}.notice{bottom:16px;width:calc(100% - 32px);max-width:500px}.range-label{margin-top:10px}}
@media(max-width:360px){main{padding-left:14px;padding-right:14px}.topbar{padding-left:14px;padding-right:14px}.hero-copy{padding-left:20px;padding-right:20px}.hero h1{font-size:29px}.question-panel{padding:22px 17px}.hello strong{font-size:15px}.lesson-row{gap:7px;grid-template-columns:18px 1fr auto}.lesson-row h3{font-size:16px}.main-nav{gap:8px}.account{max-width:105px}.account span{max-width:62px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.number-pad button{min-width:33px}}
@media(prefers-reduced-motion:no-preference){.choice,.primary,.secondary{transition:background .16s,border-color .16s}.hero-visual svg{animation:paper-in .5s ease-out}@keyframes paper-in{from{opacity:0;transform:translateY(8px) rotate(-3deg)}to{opacity:1;transform:translateY(0) rotate(-3deg)}}}

.mobile-prompt{display:none}
@media(max-width:740px){.mobile-prompt{display:block;padding:23px 21px 6px;background:#eef1e7}.mobile-prompt h1{font-size:23px;line-height:1.5;letter-spacing:-.5px;margin-bottom:12px}.mobile-prompt .lead{font-size:15px;line-height:1.85;color:var(--muted)}.mobile-prompt~.question-panel>h1,.mobile-prompt~.question-panel>.phase,.mobile-prompt~.question-panel>.lead{display:none}.mobile-prompt+.stage{padding-top:16px}.mobile-prompt+.stage>.stage-label{display:none}}

.number-pad button{min-width:44px}.range-label input{min-height:44px}

@media(min-width:741px){#graphic svg{height:280px;width:100%}.learning-desk .stage{padding-top:42px}}

.group-tabs{display:flex;gap:8px;margin:18px 0 22px;flex-wrap:wrap}.group-tabs button{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:9px;background:var(--white);padding:10px 16px;font-size:14px}.group-tabs button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:white}.group-tabs span{font-size:11px;opacity:.75}.activity-buttons{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}.activity-buttons .secondary{padding:10px 14px}.activity-buttons .selected{background:var(--ink);color:white;border-color:var(--ink)}.clock-face{max-width:320px;margin:auto}.clock-readout{text-align:center;font-variant-numeric:tabular-nums;font-size:30px;font-weight:600;margin-top:5px}.hand-legend{display:flex;justify-content:center;gap:20px;font-size:12px;margin-top:10px}.hand-legend span:last-child{color:var(--blue)}.strategy-equation{font-size:26px;font-weight:550;text-align:center;margin:22px 0 10px;font-variant-numeric:tabular-nums}.duration-lab{text-align:center;padding:22px 6px 0}.lab-kicker{font-size:13px;color:var(--muted)}.duration-target{font-size:76px;font-weight:600;letter-spacing:-3px;line-height:1.5}.duration-target small{font-size:19px;letter-spacing:0;margin-left:10px;font-weight:400}.duration-lab p{font-size:14px;max-width:350px;margin:8px auto}.experiment-running{padding:10px;background:#e0e9d6;border-radius:8px;color:#4b624a}.experiment-result{padding:16px;background:var(--white);border:1px solid #d1dbc6;border-radius:12px;margin-top:20px}.experiment-result strong{font-size:21px}.experiment-result p{font-size:13px}.minute-blocks{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:32px 0}.minute-blocks span{display:grid;place-items:center;min-height:70px;background:#dce7d3;border:1px solid #b9ccaa;border-radius:10px;font-size:20px}.fact-family{text-align:center;font-size:24px;line-height:1.8;padding:30px 0 0}.fact-family .fact-main{font-weight:600;color:var(--blue)}.fact-family>div{display:flex;gap:20px;justify-content:center;font-size:21px}.fact-family span{font-size:12px;color:var(--muted)}.fact-family hr{border:0;border-top:1px dashed #b5c4a9;margin:24px 0}.partner-strip,.equivalent-strip{display:grid;grid-template-columns:repeat(var(--parts),1fr);gap:3px;margin-top:35px}.partner-strip button,.equivalent-strip button{min-width:0;min-height:76px;background:var(--white);border:1px solid #9bb890;border-radius:5px;padding:4px 0;font-size:17px}.partner-strip button.filled,.equivalent-strip button.filled{background:var(--blue);color:white;border-color:var(--blue)}.partner-goal{text-align:center;color:var(--muted);font-size:14px}.equivalent-readout{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;margin:26px 0 14px;font-size:25px;font-variant-numeric:tabular-nums}.equivalent-readout strong{font-weight:550}.equivalent-readout span{color:#829178;font-size:20px}.number-reference{text-align:left;font-size:13px;margin-top:22px}.number-reference summary{min-height:44px;padding:10px 0;cursor:pointer;color:var(--muted)}.number-reference table{width:100%;border-collapse:collapse;background:#fffefa;font-size:15px;text-align:center}.number-reference th,.number-reference td{padding:10px;border-bottom:1px solid var(--line)}.number-reference th{font-size:12px;color:var(--muted);font-weight:400}.experiment-records{margin:20px 0 38px;padding:24px;border:1px solid var(--line);border-radius:14px}.experiment-row{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:17px 0;border-bottom:1px solid var(--line);font-size:14px}.experiment-row p{font-size:12px;color:var(--muted);margin-top:5px}.experiment-row:last-child{border:0}.experiment-row>span{color:var(--blue);white-space:nowrap}
@media(max-width:740px){.group-tabs{gap:6px}.group-tabs button{font-size:13px;padding:9px 12px;gap:7px}.clock-face{max-width:245px}.clock-face svg{max-height:245px}.clock-readout{font-size:26px}.activity-buttons .secondary{font-size:13px;padding:10px 12px}.hand-legend{gap:14px;font-size:11px}.strategy-equation{font-size:22px}.duration-target{font-size:60px}.duration-lab{padding-top:4px}.partner-strip{grid-template-columns:repeat(4,1fr);gap:5px}.partner-strip button{min-height:54px;font-size:16px}.equivalent-strip button{min-height:70px}.equivalent-readout{gap:8px;font-size:22px}.fact-family{padding-top:8px;font-size:21px}.fact-family>div{gap:14px;font-size:18px}.experiment-records{padding:18px}.experiment-row{align-items:flex-start;flex-direction:column;gap:8px}.section-heading{gap:12px}.section-heading h2{font-size:19px}.section-heading>span{flex-shrink:0}.stage .small-note{text-align:center}}
@media(max-width:360px){.group-tabs button{padding:9px;font-size:12px}.group-tabs span{display:none}.activity-buttons{gap:5px}.activity-buttons .secondary{padding:9px 10px}.equivalent-readout{font-size:19px;gap:7px}.strategy-equation{font-size:20px}.fact-family>div{font-size:16px;gap:12px}}

@media(max-width:740px){.equivalent-strip{grid-template-columns:repeat(4,1fr);height:128px}.equivalent-strip button{min-height:0}}

select{font:inherit;min-height:48px;padding:12px 36px 12px 12px;border:1px solid #b8c5ba;border-radius:9px;background:var(--white);color:var(--ink);width:100%;margin-top:8px}select:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.daily-hero{display:grid;grid-template-columns:1.12fr 1fr;background:#e9eee2;border:1px solid #d6ddcc;border-radius:24px;overflow:hidden}.daily-copy{padding:36px 0 32px 36px}.daily-copy h1{font-size:35px;line-height:1.45;letter-spacing:-1px;max-width:540px}.daily-copy>.lead{font-size:15px;color:var(--muted);margin:18px 0 8px;max-width:420px}.daily-context{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:10px}.daily-context .text-button{font-size:12px;padding-left:0}.daily-visual{align-self:center;padding:25px;text-align:center}.daily-visual svg{width:100%;height:230px}.daily-visual p{font-size:13px;color:var(--muted);margin-top:8px}.daily-stages{list-style:none;margin:20px 0 0;padding:0;display:flex;border:1px solid var(--line);border-radius:14px;overflow:hidden}.daily-stages li{flex:1;padding:19px 17px;display:flex;align-items:flex-start;gap:12px;border-right:1px solid var(--line);min-width:0}.daily-stages li:last-child{border-right:0}.stage-index{width:26px;height:26px;border-radius:50%;background:#e8edde;font-size:13px;display:grid;place-items:center;flex-shrink:0}.daily-stages strong{font-size:14px}.daily-stages p{font-size:12px;color:var(--muted);margin-top:5px}.stage-time{font-size:11px;color:var(--muted);white-space:nowrap;margin-left:auto;padding-top:4px}.other-session{display:flex;align-items:center;justify-content:space-between;gap:15px;border-bottom:1px solid var(--line);padding:12px 0;font-size:13px;color:var(--muted)}.daily-footnote{font-size:12px;color:var(--muted);margin-top:16px}.source-label{font-size:11px;line-height:1.8;color:var(--muted);margin:-3px 0 16px}.definition-card{padding:20px 4px 10px}.definition-card>span{display:block;font-size:12px;color:var(--muted);letter-spacing:1px;margin-bottom:20px}.definition-card>p{font-size:24px;line-height:1.85;font-weight:500}.definition-keywords{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}.definition-keywords strong{font-size:13px;font-weight:500;background:#fff7df;padding:8px 12px;border-bottom:2px solid #ddb65e}.recall-prompt{min-height:210px;display:flex;flex-direction:column;justify-content:center;text-align:center}.recall-prompt b{font-size:26px}.recall-prompt p{font-size:16px;color:var(--muted);margin-top:20px}.worked-lines{list-style:none;padding:0;margin:25px 0 20px;min-height:190px}.worked-lines li{display:flex;align-items:baseline;gap:18px;padding:15px 0;border-bottom:1px solid #d2ddc8;line-height:1.8}.worked-lines span{font-size:12px;color:#7d9271}.worked-lines p{font-size:23px;overflow-wrap:anywhere}.absolute-readout{display:flex;justify-content:center;gap:25px;flex-wrap:wrap;font-size:14px}.absolute-readout b{font-size:22px;padding-left:6px}.absolute-readout span:last-child{color:var(--blue)}.visited-points{font-size:12px;color:var(--muted);margin-top:13px}.visited-points span{display:inline-block;margin-left:8px}.reverse-answer{text-align:center;font-size:20px;color:var(--blue)}.term-heading{display:flex;gap:30px;justify-content:space-between;align-items:flex-start;margin-bottom:30px}.term-heading h1{font-size:35px;margin-bottom:18px}.term-heading p:not(.eyebrow){max-width:740px;font-size:15px;color:var(--muted)}.term-heading>.secondary{white-space:nowrap}.plan-settings{display:grid;grid-template-columns:1fr 1.1fr;gap:35px;padding:28px;background:#eef1e7;border-radius:17px;margin-bottom:34px}.plan-settings h2{font-size:21px;margin-bottom:14px}.plan-settings p{font-size:14px;color:var(--muted)}#study-profile-form{display:grid;grid-template-columns:1fr 160px;gap:17px}#study-profile-form>label:first-child{grid-column:1/-1}#study-profile-form .primary{align-self:end;height:49px;min-height:49px}#study-profile-form .small-note{grid-column:1/-1;margin:0;font-size:12px}.chapter{border-top:1px solid var(--line)}.chapter:last-child{border-bottom:1px solid var(--line)}.chapter>summary{display:flex;gap:21px;align-items:center;padding:25px 0;cursor:pointer;list-style:none}.chapter>summary::-webkit-details-marker{display:none}.chapter-number{font-size:27px;letter-spacing:-1px;color:#8b9a7c;width:43px;flex-shrink:0}.chapter summary strong{font-size:22px;font-weight:550}.chapter summary small{display:block;margin-top:8px;color:var(--muted);font-size:13px;line-height:1.6}.chapter-expand{margin-left:auto;font-size:25px;color:var(--muted)}.chapter[open] .chapter-expand{transform:rotate(45deg)}.chapter-content{padding:0 0 25px 63px}.textbook-unit{padding:20px;border:1px solid var(--line);margin-bottom:13px;border-radius:12px}.textbook-unit.current-unit{border-left:3px solid #aa712b;background:#faf6e9}.unit-heading{display:flex;align-items:baseline;justify-content:space-between;gap:15px;margin-bottom:10px}.unit-heading h3{font-size:16px}.unit-heading>span{font-size:11px;color:var(--muted)}.textbook-lesson{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:13px 0;border-top:1px solid #e0e4d9}.textbook-lesson strong{font-size:15px;font-weight:500}.textbook-lesson .small-note{display:block;margin-top:6px}.textbook-lesson .secondary{font-size:13px;white-space:nowrap;padding:10px 15px}.family-rhythm{padding:28px 0 0}.family-rhythm h2{font-size:22px;margin-bottom:14px}.family-rhythm p{font-size:14px;color:var(--muted);max-width:850px}.weekly-overview{background:#edf1e6;border:1px solid #d8dfce;padding:26px;border-radius:18px;margin-bottom:22px}.weekly-overview .section-heading{margin-bottom:18px}.weekly-numbers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.weekly-numbers>div{display:flex;flex-direction:column;border-left:1px solid #cbd6c1;padding-left:20px}.weekly-numbers>div:first-child{border:0;padding-left:0}.weekly-numbers strong{font-size:35px;font-weight:550;font-variant-numeric:tabular-nums}.weekly-numbers small{font-size:14px;font-weight:400;color:var(--muted)}.weekly-numbers span{font-size:13px;margin-top:9px}.weekly-clear{font-size:13px;margin-top:15px;color:var(--muted)}.family-attention{padding-top:23px;margin-top:20px;border-top:1px solid #c9d5bf}.family-attention h3{font-size:18px;margin-bottom:15px}.family-attention article{margin-top:12px;padding:15px;background:#fffefa;border-left:3px solid #c48d41}.family-attention strong{font-size:14px}.family-attention p{font-size:13px;margin-top:5px}.exam-section{margin:0 0 30px;border:1px solid var(--line);border-radius:12px;padding:0 22px 15px}.exam-section>summary{cursor:pointer;padding:19px 0 8px;font-size:17px}.exam-section>summary small{float:right;font-size:12px;color:var(--muted)}.exam-list article{display:flex;justify-content:space-between;align-items:center;gap:18px;border-bottom:1px solid var(--line);padding:14px 0}.exam-list strong{font-size:14px;font-weight:500}.exam-list small{font-size:12px;display:block;color:var(--muted);margin-top:5px}.exam-list article>span{font-size:24px;font-variant-numeric:tabular-nums}.exam-form{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:22px}.exam-form input{font-size:16px}.exam-form .small-note{margin-top:0}.exam-form label{font-size:13px}
@media(max-width:1000px){.daily-stages li{flex-wrap:wrap}.stage-time{padding-left:38px;width:100%}.plan-settings{grid-template-columns:1fr;gap:24px}.chapter-content{padding-left:20px}.unit-heading{flex-direction:column;gap:5px}}
@media(max-width:740px){.main-nav{gap:12px}.daily-hero{grid-template-columns:1fr;border-radius:19px}.daily-copy{padding:25px 23px 0}.daily-copy h1{font-size:29px;line-height:1.45;letter-spacing:-.6px}.daily-copy .eyebrow{font-size:11px;margin-bottom:12px}.daily-copy>.lead{font-size:14px;margin:12px 0 0}.daily-context{gap:0;margin-top:8px}.daily-copy .hero-action{margin:15px 0 10px}.daily-copy .primary{width:100%;justify-content:space-between;font-size:15px}.daily-visual{padding:2px 18px 18px}.daily-visual svg{height:155px}.daily-visual p{font-size:11px;line-height:1.6;margin-top:0}.daily-stages{flex-direction:column;margin-top:16px}.daily-stages li{flex-wrap:nowrap;padding:14px 16px;border-right:0;border-bottom:1px solid var(--line)}.daily-stages li:last-child{border-bottom:0}.stage-time{padding-left:0;width:auto}.daily-stages p{font-size:11px}.other-session{flex-wrap:wrap;gap:0;padding:9px 0;font-size:12px}.other-session .text-button{padding-left:0;font-size:12px}.daily-footnote{font-size:11px}.definition-card{padding:12px 0 8px}.definition-card>p{font-size:20px;line-height:1.8}.definition-card>span{margin-bottom:15px}.definition-keywords{gap:7px;margin-top:18px}.definition-keywords strong{font-size:12px;padding:7px 9px}.recall-prompt{min-height:180px}.recall-prompt b{font-size:23px}.recall-prompt p{font-size:14px}.worked-lines{margin-top:10px;min-height:150px}.worked-lines li{gap:12px;padding:12px 0}.worked-lines p{font-size:20px}.absolute-readout{gap:18px;font-size:12px}.absolute-readout b{font-size:19px}.reverse-answer{font-size:17px}.source-label{font-size:10px}.term-heading{display:block;margin-bottom:25px}.term-heading h1{font-size:28px;line-height:1.5}.term-heading p:not(.eyebrow){font-size:14px}.term-heading>.secondary{margin-top:18px}.plan-settings{padding:22px 18px;gap:20px}.plan-settings h2{font-size:20px}.plan-settings p{font-size:13px}#study-profile-form{grid-template-columns:1fr 116px;gap:12px}#study-profile-form label{font-size:13px}#study-profile-form select{font-size:13px;min-width:0;padding-right:22px}#study-profile-form .primary{font-size:14px;padding:12px}.chapter>summary{padding:22px 0;gap:12px}.chapter-number{font-size:25px;width:34px}.chapter summary strong{font-size:20px}.chapter summary small{font-size:11px}.chapter-content{padding-left:0}.textbook-unit{padding:16px 14px}.textbook-lesson{align-items:flex-start;flex-wrap:wrap;gap:10px}.textbook-lesson strong{font-size:14px}.textbook-lesson .secondary{font-size:12px}.unit-heading h3{font-size:15px}.family-rhythm h2{font-size:20px}.weekly-overview{padding:21px 18px}.weekly-overview .section-heading{flex-wrap:wrap;gap:0}.weekly-numbers{gap:10px}.weekly-numbers>div{padding-left:10px}.weekly-numbers strong{font-size:27px}.weekly-numbers small{font-size:10px}.weekly-numbers span{font-size:11px;line-height:1.7}.weekly-overview .small-note{font-size:11px}.exam-section{padding:0 17px 15px}.exam-section>summary{font-size:16px}.exam-section>summary small{font-size:11px}.exam-form{gap:13px}.exam-form label:first-child{grid-column:1/-1}.exam-form label:nth-child(2){grid-column:1/-1}.exam-list article>span{font-size:22px}.exam-form input{min-width:0}.family-attention h3{font-size:17px}}