@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--ink:#153e36;--green:#16473e;--muted:#61746e;--lime:#d7f08a;--paper:#f5f7f3;--line:#dce3da;--white:#fff;--blue:#e2ecff;--orange:#f5d8b1;--radius:24px}*{box-sizing:border-box}body{margin:0;font:16px/1.55 'DM Sans',sans-serif;background:var(--paper);color:var(--ink)}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid #2666cc;outline-offset:4px}button:disabled{cursor:default}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:Manrope,sans-serif;letter-spacing:-.045em}h1{font-size:clamp(2rem,4vw,3.1rem);line-height:1.15;font-weight:800}h2{font-size:1.6rem;line-height:1.3}h3{font-size:1.2rem;line-height:1.35}.shell{display:flex;min-height:100vh}.sidebar{width:250px;flex-shrink:0;background:white;border-right:1px solid var(--line);padding:36px 25px;position:fixed;inset:0 auto 0 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var(--line);border-radius:20px;padding:28px;max-width:420px;width:calc(100% - 32px);color:var(--ink)}dialog::backdrop{background:#153e3680}dialog p{margin:14px 0 23px}.install-help{background:#e8effa;border-radius:16px;padding:20px;margin-top:24px;font-size:14px}.install-help p{margin-top:7px}
@media(min-width:1450px){main{padding-top:50px}.feature{min-height:340px}}
@media(max-width:1050px){.sidebar{width:210px;padding:30px 17px}.workspace{margin-left:210px}.teacher span{display:none}.cards{gap:12px}.trail{padding:18px}.bottom-grid{grid-template-columns:1fr 1fr}.feature-copy{padding:27px}}
@media(max-width:760px){.sidebar{display:none}.workspace{margin-left:0}.topbar{min-height:100px;padding:15px 20px;display:block}.mobile-brand{display:block;font-size:16px;margin-bottom:12px}.topbar-caption{display:none}.level-control{display:inline-flex}.level-control button{font-size:13px;padding:7px 12px}main{padding:27px 20px 20px;min-height:calc(100vh - 210px)}.intro{gap:12px;margin-bottom:22px}.intro h1{font-size:29px}.intro p{font-size:14px}.teacher img{width:40px;height:40px}.eyebrow{font-size:11px}.feature{grid-template-columns:1fr;min-height:0}.feature-copy{padding:25px}.feature h2{font-size:32px;max-width:none}.feature p{max-width:none}.feature-photo{height:185px;grid-row:2}.feature button{margin-top:18px}.meta-row{margin-top:13px}.cards{grid-template-columns:1fr;gap:12px}.trail{padding:20px;position:relative}.trail .symbol{margin-bottom:15px}.trail p{min-height:0}.trail-foot{margin-top:16px}.bottom-grid{grid-template-columns:1fr;margin-top:16px}.tip{padding:20px}.mini-progress{padding:20px}.section-heading{margin-top:26px}.section-heading h2{font-size:22px}.section-heading .text-link{font-size:13px}.footer{padding:20px 20px 100px;flex-wrap:wrap;gap:8px}.mobile-nav{position:fixed;bottom:0;left:0;right:0;background:#fffffffa;border-top:1px solid var(--line);display:flex;justify-content:space-around;padding:10px 5px calc(10px + env(safe-area-inset-bottom));z-index:20;backdrop-filter:blur(15px)}.mobile-nav .nav-item{padding:3px;display:flex;flex-direction:column;gap:3px;font-size:11px;font-weight:500;flex:1;border-radius:0}.mobile-nav .nav-item.active{background:transparent;color:var(--green);font-weight:700}.mobile-nav .nav-item svg{width:22px;height:22px}.mobile-nav .nav-item.active svg{background:var(--lime);border-radius:7px;box-sizing:content-box;padding:4px;margin-top:-4px;margin-bottom:-4px}.lesson-panel{padding:22px 18px}.lesson-header h1{font-size:30px}.comparison{gap:10px}.definition{padding:16px}.definition strong{font-size:21px}.lesson-image{max-height:220px}.lesson-actions{flex-wrap:wrap}.lesson-actions .primary{flex:1}.stats{gap:8px}.stat{padding:17px 12px}.stat strong{font-size:26px}.stat span{font-size:12px}.domain-grid{grid-template-columns:1fr}.lesson-banner{display:block}.lesson-banner .primary{margin-top:15px}.book-cover{min-height:175px}.topbar .level-control{max-width:100%}.option{padding:14px}.stepper span{font-size:13px}.lesson-actions button{font-size:14px}}
@media(prefers-reduced-motion:no-preference){main{animation:appear .22s ease}@keyframes appear{from{opacity:.65;transform:translateY(4px)}to{opacity:1;transform:none}}button{transition:background .15s,transform .15s}button:active{transform:translateY(1px)}}
/* Learning activities share the established collection palette. */
.card-domain{display:block;margin-bottom:8px;letter-spacing:.055em}.activity-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.875rem;color:var(--muted);margin-top:18px}.activity-meta .text-link{padding:0}.trail .progress-track{margin-top:12px}.trail-foot{margin-top:15px}.activity-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.domain-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.domain-tabs a{border:1px solid var(--line);border-radius:30px;background:white;padding:10px 15px;font-size:.875rem;font-weight:600}.learning-area{scroll-margin-top:25px}.stepper button{flex:1;padding:12px 8px;background:transparent;border:0;border-bottom:3px solid var(--line);color:var(--muted);font-size:.875rem;min-height:48px}.stepper button.active{border-color:var(--green);color:var(--green);font-weight:700}.science-model{background:#f0f4f8;border:1px solid #d5dfe8;border-radius:18px;padding:23px;margin:22px 0}.model-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:22px}.model-diagram svg{width:100%;display:block}.model-grid p{font-size:1rem}.moon-diagram{width:100%;max-width:230px;justify-self:center}.lab-controls{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 18px}.lab-controls button{background:white;border:1px solid #bacbd7;border-radius:10px;color:var(--ink);padding:10px 14px;font-size:.875rem;min-height:44px}.lab-controls button[aria-pressed=true]{background:var(--green);color:white;border-color:var(--green)}.range-label{display:flex;justify-content:space-between;gap:12px;font-size:1rem;font-weight:600;margin:14px 0 8px}.range-label output{color:var(--green);white-space:nowrap}input[type=range]{width:100%;min-height:44px;accent-color:var(--green);cursor:pointer}input[type=range]:focus-visible{outline:3px solid #2666cc;outline-offset:3px}.thermal-output{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0 15px}.reading span{display:block;font-size:.875rem;color:var(--muted)}.reading strong{display:block;font:800 1.5rem Manrope;margin-top:4px}.temperature-scale{height:14px;background:#d9e3ec;border-radius:6px;overflow:hidden}.temperature-scale>div{height:100%;background:#bd6638}.scale-labels{display:flex;justify-content:space-between;font-size:.875rem;color:var(--muted);margin-top:5px}.model-equation{font-size:.875rem;overflow-wrap:anywhere}.food-chain{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:24px 0}.food-chain>div{flex:1;text-align:center;padding:16px 8px;background:white;border:1px solid #c2d5c8;border-radius:12px}.food-chain strong{display:block;font-size:1rem}.food-chain span{display:block;font-size:.875rem;color:var(--muted);margin-top:6px}.food-chain>span{font-size:24px;color:var(--green);margin:0}.progress-list{display:grid;gap:12px}.progress-heading{display:flex;justify-content:space-between;gap:15px;align-items:center}.progress-heading>span{font-weight:700}.result-total{font-size:1.6rem;color:var(--muted)}.definition strong{font-size:1.3rem}.signature,.eyebrow,.badge,.footer,.meta-row,.photo-credit{font-size:.875rem}.feature p,.trail p,.tip p,.definition p,.callout,.review-item p,.book p,.intro p{font-size:1rem}.mobile-nav .nav-item{font-size:.875rem}.stepper button,.level-control button{font-size:.875rem}
@media(max-width:760px){.activity-grid{grid-template-columns:1fr}.science-model{padding:18px 14px}.model-grid{grid-template-columns:1fr;gap:12px}.model-diagram svg{max-width:300px;margin:auto}.thermal-output{gap:8px}.reading strong{font-size:1.25rem}.food-chain{flex-direction:column;gap:8px}.food-chain>div{width:100%;padding:10px}.food-chain>span{transform:rotate(90deg)}.food-chain span{margin-top:3px}.domain-tabs a{padding:9px 12px}.intro h1{font-size:1.8rem}.mobile-nav .nav-item{font-size:.875rem}.stat span{font-size:.875rem}.trail-foot{flex-wrap:wrap}.level-control button{font-size:.875rem}.eyebrow{letter-spacing:.055em}.feature-photo{height:155px}.stepper button{font-size:.875rem;padding:10px 3px}.comparison{grid-template-columns:1fr}.stat{min-width:0}.range-label{flex-wrap:wrap}.quiz-top{flex-wrap:wrap;gap:6px}}
@media(max-width:360px){main{padding-left:14px;padding-right:14px}.stats{grid-template-columns:1fr}.thermal-output{grid-template-columns:1fr}.mobile-nav .nav-item{font-size:.75rem}.stepper{flex-wrap:wrap}.stepper button{min-width:100%}}
.book-link{display:block;margin-top:12px}.badge{white-space:normal}.feature-photo img{object-position:center}.model-grid strong,.model-grid h3{overflow-wrap:anywhere}
/* Laboratory: prediction, evidence and explanation. */
.nav-short{display:none}.lab-launcher{display:flex;align-items:center;justify-content:space-between;gap:22px;background:#e1efd4;border:1px solid #c7dcb3;border-radius:20px;padding:24px;margin-top:23px}.lab-launcher h2{margin:7px 0}.lab-launcher p{color:var(--muted);max-width:550px}.lab-launcher .primary{flex-shrink:0}.lab-card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.lab-card{padding:25px;background:white;border:1px solid var(--line);border-radius:22px;display:flex;flex-direction:column;align-items:flex-start}.lab-card-top{display:flex;align-items:center;justify-content:space-between;gap:15px;width:100%;margin-bottom:22px}.lab-card .symbol{display:flex;width:48px;height:48px;align-items:center;justify-content:center;border-radius:14px}.lab-card h2{margin:7px 0 13px;font-size:1.5rem}.lab-card p{margin-bottom:22px;color:var(--muted);flex:1}.lab-note{margin-top:25px}.lab-card .primary{min-width:145px}.investigation-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin:20px 0 25px}.investigation-steps span{padding:12px 5px;text-align:center;font-size:.875rem;border-bottom:3px solid var(--line);color:var(--muted)}.investigation-steps span.active{border-color:var(--green);font-weight:700;color:var(--green)}.option.selected{background:#e2efd5;border-color:#7e9f58}.primary:disabled{opacity:.55;cursor:default;transform:none}.lab-hypothesis{margin:20px 0;padding:16px 18px;background:#e8effa;border-radius:13px;font-size:1rem}.lab-selects{display:grid;grid-template-columns:1fr 1fr;gap:16px}.lab-select-label{display:block;font-weight:600;font-size:1rem;margin:12px 0}.lab-select-label select{display:block;width:100%;font:inherit;color:var(--ink);background:white;border:1px solid #bacbd7;border-radius:10px;min-height:48px;padding:10px 12px;margin-top:8px;cursor:pointer}.lab-select-label select:focus-visible{outline:3px solid #2666cc;outline-offset:3px}.separation-diagram{margin-top:25px}.separation-node{padding:20px;background:white;border:1px solid #c1d1dc;border-radius:15px;text-align:center;display:flex;flex-direction:column;gap:8px}.separation-node strong{font-size:1.2rem}.separation-node p{margin:3px 0;font-size:1rem}.separation-operation{text-align:center;padding:14px 0;font-weight:600}.separation-operation>span{display:block;font-size:25px;line-height:1.1}.result-node{background:#e5f0db;border-color:#bfd0ab}.lab-bar-chart{background:white;border-radius:14px;padding:18px}.lab-bar-row{display:grid;grid-template-columns:48px 1fr 70px;align-items:center;gap:12px;margin:16px 0;font-size:.875rem}.lab-bar-track{height:22px;background:#e4ecf0;border-radius:5px;overflow:hidden}.lab-bar-track i{display:block;height:100%;background:#bf7447}.lab-bar-row:nth-of-type(2) .lab-bar-track i{background:#497f96}.lab-bar-row strong{text-align:right}.observation-list{display:grid;gap:10px;margin:18px 0}.observation{display:flex;align-items:flex-start;gap:13px;padding:17px;background:#f3f5ef;border:1px solid var(--line);border-radius:13px}.observation-number{display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--green);color:white;width:28px;height:28px;border-radius:8px;font-size:.875rem;font-weight:700}.observation>div{min-width:0;flex:1}.observation strong{font-size:1rem}.observation p{margin:5px 0 0;color:var(--muted);font-size:1rem}.observation-remove{border:0;color:var(--muted);background:transparent;min-height:36px;padding:2px 7px;font-size:.875rem}.lab-final-question{margin-top:30px}.lab-evolution{margin-top:35px}.lab-evolution .progress-heading{flex-wrap:wrap}.lab-evolution .progress-heading>span{font-size:.875rem;font-weight:500;color:var(--muted)}.experiment-shortcuts{margin-bottom:16px}.laboratory-lesson .back{display:inline-block}.investigation-controls{border-bottom:1px solid #d5dfe8;padding-bottom:16px;margin-bottom:20px}.science-model>div>svg{max-width:100%}
@media(max-width:760px){.mobile-nav [href="#laboratorio"] .nav-full{display:none}.mobile-nav .nav-short{display:inline}.lab-launcher{display:block;padding:22px}.lab-launcher .primary{margin-top:17px}.lab-card-grid{grid-template-columns:1fr;gap:15px}.lab-card{padding:22px}.investigation-steps{gap:4px}.investigation-steps span{font-size:.875rem;padding:10px 0}.lab-selects{grid-template-columns:1fr;gap:0}.lab-bar-chart{padding:14px}.lab-bar-row{gap:8px;grid-template-columns:42px 1fr 65px}.observation{padding:14px;gap:10px;flex-wrap:wrap}.observation>div{flex-basis:calc(100% - 42px)}.observation-remove{margin-left:38px}.lab-launcher h2{font-size:1.5rem}.lab-card h2{font-size:1.4rem}}
@media(max-width:360px){.investigation-steps{grid-template-columns:repeat(2,1fr)}.lab-card-top{flex-wrap:wrap}}
.nav-item{min-width:0}.nav-item span{min-width:0;overflow-wrap:anywhere}.mobile-nav .nav-item span{max-width:100%;line-height:1.25}.lab-card,.science-model,.lesson-panel{min-width:0}.lab-card h2,.lab-hypothesis,.observation strong{overflow-wrap:anywhere}.model-grid>svg{width:100%;height:auto}.investigation-steps span{overflow-wrap:anywhere}
/* Preparation and targeted practice reuse the app's study surfaces. */
.prep-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:25px 0}.prep-card{display:grid;grid-template-columns:42px 1fr;align-items:start;gap:15px;background:#e3ecfa;border:1px solid #ccd8e9;border-radius:21px;padding:24px;min-width:0}.prep-card.review-card{background:#e7efdd;border-color:#d0ddbe}.prep-card .symbol{width:42px;height:42px;background:white;border-radius:12px;display:flex;align-items:center;justify-content:center}.prep-card .symbol svg{width:23px;height:23px}.prep-card h2{font-size:1.35rem;margin:7px 0 10px}.prep-card p{font-size:1rem;color:var(--muted)}.prep-card>a{grid-column:2;justify-self:start;margin-top:2px}.session-resume{display:flex;align-items:center;justify-content:space-between;gap:20px;background:white;border:1px solid var(--line);padding:24px;border-radius:19px;margin:22px 0}.session-resume p{margin-top:7px;color:var(--muted);font-size:.875rem}.session-resume>button{flex-shrink:0}.review-overview{display:flex;align-items:center;gap:35px;padding:25px;background:#e7efdd;border-radius:20px;margin:25px 0}.review-overview>div{display:flex;flex-direction:column;gap:5px}.review-overview strong{font:800 2rem Manrope}.review-overview span{font-size:.875rem;color:var(--muted)}.review-overview button{margin-left:auto}.target-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.review-target{padding:23px;background:white;border:1px solid var(--line);border-radius:19px;min-width:0}.review-target h3{margin:8px 0 15px}.review-target p{color:var(--muted);font-size:.875rem;margin:16px 0 8px}.review-target .badge{display:inline-flex}.exam-config fieldset{border:0;padding:0;margin:0 0 25px;min-width:0}.exam-config legend{font:700 1.2rem Manrope;margin-bottom:17px;padding:0}.topic-choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}.topic-choice{display:flex;align-items:flex-start;gap:12px;padding:17px;border:1px solid var(--line);border-radius:14px;cursor:pointer;min-width:0;background:white}.topic-choice.selected{background:#eaf2df;border-color:#94ac73}.topic-choice input,.exam-length input{width:20px;height:20px;accent-color:var(--green);flex-shrink:0;margin:2px 0 0}.topic-choice>span{display:grid;grid-template-columns:24px 1fr;gap:5px 8px;min-width:0}.topic-choice svg{width:22px;height:22px;grid-row:1}.topic-choice strong{font-size:1rem}.topic-choice small{grid-column:2;font-size:.875rem;color:var(--muted);line-height:1.45}.exam-length{display:grid;grid-template-columns:1fr 1fr;gap:12px}.exam-length>label{display:flex;gap:12px;padding:18px;border:1px solid var(--line);border-radius:13px;cursor:pointer}.exam-length strong,.exam-length small{display:block}.exam-length small{font-size:.875rem;color:var(--muted);margin-top:5px}.exam-plan{padding-top:22px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.exam-plan>span{font-size:.875rem;color:var(--muted)}.training-steps{grid-template-columns:repeat(3,minmax(0,1fr))}.recap-topic{margin:25px 0;padding:23px;border:1px solid var(--line);background:#f4f7ef;border-radius:17px}.recap-topic h3{margin:7px 0 12px}.recap-topic>p{margin-bottom:18px}.recap-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}.recap-pair>div{background:white;border-radius:12px;padding:17px}.recap-pair p{font-size:1rem;margin:8px 0 0}.target-recap{border-top:1px solid var(--line);padding-top:15px;margin-top:15px}.target-recap p{margin:8px 0;font-size:1rem}.concept-help{margin:18px 0;background:#e8effa;border-radius:13px;padding:16px 19px}.concept-help summary{cursor:pointer;font-weight:600;min-height:24px}.concept-help p{margin:13px 0 0}.session-topics{display:grid;gap:9px;margin:23px 0}.session-topics>div{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:15px;background:#edf3e6;border-radius:11px}.session-topics span{font-size:.875rem;white-space:nowrap;color:var(--muted)}.support-evolution{margin:35px 0}.prep-progress-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.review-actions{display:flex;flex-wrap:wrap;gap:10px 25px}.topic-choice input:focus-visible,.exam-length input:focus-visible{outline:3px solid #2666cc;outline-offset:4px}.training-lesson .back{display:inline-block}
@media(max-width:760px){.prep-cards,.target-grid,.topic-choices,.exam-length,.prep-progress-grid{grid-template-columns:1fr}.prep-card{padding:22px 18px;gap:12px}.prep-card h2{font-size:1.3rem}.prep-card>a{grid-column:1/-1}.session-resume{display:block;padding:22px}.session-resume button{margin-top:16px}.review-overview{padding:22px;flex-wrap:wrap;gap:20px}.review-overview button{margin-left:0;flex-basis:100%}.exam-plan{flex-direction:column;align-items:stretch}.recap-topic{padding:20px 16px}.recap-pair{grid-template-columns:1fr}.session-topics>div{align-items:flex-start;flex-wrap:wrap;gap:8px}.topic-choice{padding:17px 14px}.training-steps{grid-template-columns:repeat(3,minmax(0,1fr))}.training-lesson .lesson-header h1{font-size:1.8rem}}
/* Year preferences and guided reading extend the existing study palette. */
.topbar{flex-wrap:wrap}.study-settings{display:flex;flex-wrap:wrap;gap:14px;align-items:center}.grade-picker{display:flex;align-items:center;gap:9px;font-size:.875rem;font-weight:600}.grade-picker select{font:inherit;color:var(--ink);background:white;border:1px solid var(--line);border-radius:10px;padding:10px 12px;min-height:44px;cursor:pointer}.grade-picker select:focus-visible{outline:3px solid #2666cc;outline-offset:3px}.grade-summary{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:23px 26px;border:1px solid #c7d8b2;border-radius:20px;background:#e7efdd;margin:0 0 24px}.grade-summary>div{min-width:0}.grade-summary h2{font-size:1.35rem;margin:7px 0 9px}.grade-summary p{color:var(--muted);max-width:620px}.grade-summary-actions{display:flex;flex-direction:column;align-items:flex-start;gap:12px;flex-shrink:0;font-size:.875rem;color:var(--muted)}.path-intro{border:1px solid #c7d8b2;border-radius:20px;background:#e7efdd;padding:26px;margin-bottom:20px}.path-intro p{color:var(--muted);margin:12px 0 22px}.path-list{display:grid;gap:12px}.path-step{display:grid;grid-template-columns:36px minmax(0,1fr) auto;align-items:start;gap:18px;background:white;border:1px solid var(--line);border-radius:18px;padding:23px}.path-number{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:11px;background:var(--green);color:var(--lime);font-weight:700}.path-step h3{margin:6px 0 9px}.path-step p{color:var(--muted)}.path-step-actions{display:flex;flex-direction:column;align-items:flex-end;gap:14px}.path-basis{background:#e8effa;border-radius:16px;padding:21px 24px;margin-top:24px}.path-basis summary{font-weight:600;cursor:pointer}.path-basis p{margin:14px 0 0}.connected-books{display:grid;gap:24px}.connected-book{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);background:white;border:1px solid var(--line);border-radius:24px;overflow:hidden}.connected-book-image{width:100%;height:100%;object-fit:cover;object-position:center;min-height:310px}.connected-book-copy{padding:30px;min-width:0}.connected-book-copy h2{font-size:1.75rem;margin:8px 0 9px}.connected-book-copy p{color:var(--muted);margin:9px 0 15px}.connected-book-copy h3{margin-top:22px}.connected-book-copy .badge{display:inline-block}.connected-book-copy .primary{margin:7px 0 10px}.connected-book-copy>.text-link{display:block}.reading-small-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.reading-small-card{display:grid;grid-template-columns:115px minmax(0,1fr);border:1px solid var(--line);background:white;border-radius:18px;overflow:hidden;min-width:0}.reading-small-card img{width:100%;height:100%;object-fit:cover}.reading-small-card>div{padding:20px;min-width:0}.reading-small-card h3{margin:6px 0 9px}.reading-small-card p{color:var(--muted);font-size:.875rem}.reading-preview{display:block;width:100%;max-height:340px;object-fit:cover;border-radius:16px;margin:0 0 24px}.reading-topics{padding-left:22px;margin:19px 0 25px}.reading-topics li{margin:6px 0}.reading-connections{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:24px 0}.reading-connections article{display:flex;gap:15px;align-items:flex-start;border:1px solid var(--line);background:#f4f7ef;border-radius:16px;padding:20px;min-width:0}.reading-connections article>div{min-width:0}.reading-connections .symbol{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:40px;height:40px;background:white;border-radius:12px}.reading-connections h3{margin-top:6px}.reading-connections p{color:var(--muted);font-size:1rem}.related-reading{margin:25px 0 0;padding:21px 24px;border:1px solid var(--line);background:#e8effa;border-radius:18px}.related-reading p{display:flex;flex-wrap:wrap;gap:6px 22px;margin-top:7px}.related-reading button{text-align:left;font-size:.875rem}.curriculum-evolution{margin-top:35px}.reading-lesson .lesson-panel .subtle{font-size:.875rem}.connected-book h2,.reading-small-card h3,.path-step h3{overflow-wrap:anywhere}
@media(max-width:1000px){.topbar-caption{display:none}.study-settings{width:100%;justify-content:space-between}.reading-small-grid{grid-template-columns:1fr}.connected-book{grid-template-columns:1fr 1fr}.grade-summary{flex-wrap:wrap}.grade-summary-actions{flex-direction:row;align-items:center;flex-wrap:wrap;gap:12px 20px}}
@media(max-width:760px){.study-settings{gap:12px}.study-settings .level-control{display:flex;flex:1 1 100%}.study-settings .level-control button{flex:1;min-height:44px;padding:8px}.grade-picker{justify-content:space-between;width:100%}.grade-picker select{min-width:150px}.grade-summary{padding:22px 20px;gap:17px}.grade-summary h2{font-size:1.25rem}.grade-summary-actions{width:100%;justify-content:space-between}.grade-summary-actions .primary{width:100%}.path-intro{padding:22px 20px}.path-intro .activity-meta{flex-wrap:wrap}.path-step{grid-template-columns:30px minmax(0,1fr);padding:20px 17px;gap:12px}.path-number{width:30px;height:30px;border-radius:9px}.path-step-actions{grid-column:2;flex-direction:row;align-items:center;justify-content:space-between;flex-wrap:wrap}.path-step-actions .primary,.path-step-actions .secondary{padding:10px 15px}.path-basis{padding:20px}.connected-book{grid-template-columns:1fr}.connected-book-image{height:230px;min-height:0}.connected-book-copy{padding:24px 20px}.connected-book-copy h2{font-size:1.5rem}.connected-book-copy .primary{width:100%}.reading-small-card{grid-template-columns:90px minmax(0,1fr)}.reading-small-card>div{padding:18px 15px}.reading-small-card h3{font-size:1.1rem}.reading-connections{grid-template-columns:1fr}.reading-connections article{padding:18px 15px;gap:12px}.reading-preview{max-height:230px}.related-reading{padding:20px}.reading-lesson .lesson-actions>*{flex:1 1 100%}.reading-lesson .lesson-panel>.primary{width:100%;text-align:center}}
/* Student account keeps identity, profile and progress together. */
.account-entry{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;border:1px solid var(--line);background:white;border-radius:12px;padding:10px 14px;font-weight:600;font-size:.875rem}.account-entry svg{width:22px;height:22px;flex-shrink:0}.account-entry.active{background:var(--green);color:white;border-color:var(--green)}.account-heading{display:flex;align-items:center;gap:22px;margin:0 0 30px}.account-heading>div{min-width:0}.account-heading h1{font-size:clamp(1.8rem,3vw,2.5rem);margin:7px 0 10px;overflow-wrap:anywhere}.account-heading p{color:var(--muted);margin:0 0 12px;overflow-wrap:anywhere}.account-avatar{display:inline-flex;align-items:center;justify-content:center;width:80px;height:80px;flex-shrink:0;border-radius:24px;background:var(--green);color:var(--lime);font:800 1.8rem Manrope}.account-avatar svg{width:36px;height:36px}.account-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:24px;align-items:start}.account-profile h2{margin-bottom:10px}.account-profile form{margin-top:25px}.account-profile label{display:block;font-size:1rem;font-weight:600;margin-bottom:21px}.account-profile input,.account-profile select{display:block;width:100%;font:inherit;background:white;border:1px solid #bacbd7;border-radius:10px;min-height:48px;padding:11px 12px;margin-top:9px;color:var(--ink)}.account-profile input:focus-visible,.account-profile select:focus-visible{outline:3px solid #2666cc;outline-offset:3px}.account-profile input::placeholder{font-weight:400;color:var(--muted)}.account-school{display:grid;grid-template-columns:1.4fr 1fr;gap:15px}.account-profile .primary{margin-top:14px}.account-feedback{font-size:.875rem;color:var(--muted)}.account-studies{display:grid;gap:20px}.account-summary{background:#e7efdd;border:1px solid #c7d8b2;border-radius:24px;padding:27px}.account-summary h2{font-size:1.5rem;margin:8px 0 24px}.account-stat-list{display:grid;gap:13px;margin:0 0 25px}.account-stat-list>div{display:flex;align-items:center;gap:15px;padding-bottom:13px;border-bottom:1px solid #c7d8b2}.account-stat-list strong{font:800 1.55rem Manrope;min-width:53px}.account-stat-list span{color:var(--muted);font-size:1rem}.account-summary>a{display:flex;justify-content:flex-start}.account-summary>.primary{justify-content:center;margin-bottom:8px}.account-access{padding:24px;background:#e8effa;border:1px solid #ccd8e9;border-radius:20px}.account-access .badge{display:inline-block;margin-top:12px;background:white}.account-access p{margin:12px 0;font-size:1rem;color:var(--muted)}.account-access .account-saved-date{font-size:.875rem}.account-signout{display:block;text-decoration:underline;text-underline-offset:3px}.account-signout[aria-disabled=true]{color:var(--muted);cursor:wait}.account-import{display:flex;align-items:center;justify-content:space-between;gap:24px;background:white;border:1px solid var(--line);border-radius:20px;padding:25px;margin-top:25px}.account-import>div{min-width:0}.account-import h2{margin:7px 0 12px;font-size:1.35rem}.account-import p{color:var(--muted)}.account-import button{flex-shrink:0}.account-conflict{background:#fff0ec;border:1px solid #d5856e;padding:25px;border-radius:20px;margin-top:25px}.account-conflict h2{font-size:1.35rem}.account-conflict p{margin-top:12px}.account-gate{max-width:640px;margin:45px auto;text-align:center;background:white;border:1px solid var(--line);padding:38px 30px;border-radius:24px}.account-gate h1{font-size:2rem;margin:24px 0 16px}.account-gate p{color:var(--muted);margin-bottom:25px}.account-gate .secondary{margin:15px 0 0}.account-gate .primary{display:flex;max-width:300px;margin:auto}.account-profile,.account-summary,.account-access{min-width:0}.account-entry span{white-space:nowrap}
@media(max-width:1000px){.account-layout{grid-template-columns:1fr}.account-studies{grid-template-columns:1fr 1fr;align-items:start}.account-import{flex-wrap:wrap}}
@media(max-width:760px){.study-settings .grade-picker{flex:1;width:auto}.account-heading{gap:15px;margin-bottom:24px}.account-avatar{width:64px;height:64px;border-radius:20px;font-size:1.4rem}.account-heading h1{font-size:1.8rem}.account-studies{grid-template-columns:1fr}.account-school{grid-template-columns:1fr;gap:0}.account-summary{padding:24px 20px}.account-profile .primary{width:100%}.account-access{padding:22px 20px}.account-gate{margin:20px auto;padding:30px 20px}.account-gate h1{font-size:1.6rem}.account-import{padding:22px 20px;gap:20px}.account-import button{width:100%}.account-conflict{padding:22px 20px}.account-conflict .lesson-actions>*{flex:1 1 100%}.grade-picker select{min-width:105px}}
@media(max-width:450px){.account-entry{padding:10px}.account-entry span{display:none}.grade-picker{gap:7px}.account-heading{align-items:flex-start}}

.account-deletion{margin-top:25px;padding:25px;background:white;border:1px solid #d8b7ad;border-radius:20px}.account-deletion h2{font-size:1.35rem}.account-deletion p{margin-top:12px;color:var(--muted)}.account-deletion>.text-link{color:#983b26;text-decoration:underline}.account-deletion form{margin-top:20px}.account-deletion label{display:block;font-weight:600}.account-deletion input{display:block;font:inherit;width:100%;max-width:320px;margin-top:9px;min-height:48px;padding:11px 12px;border:1px solid #a97d6f;border-radius:10px;color:var(--ink);background:white}.account-deletion input:focus-visible{outline:3px solid #2666cc;outline-offset:3px}.account-delete-button{border:0;border-radius:12px;min-height:48px;padding:12px 21px;background:#983b26;color:white;font-weight:700}.account-deletion [hidden]{display:none}@media(max-width:760px){.account-deletion{padding:22px 20px}.account-deletion .lesson-actions>*{flex:1 1 100%}.account-deletion input{max-width:none}}
.account-auth{max-width:780px;margin:25px auto;text-align:left}.account-auth h2{font-size:1.4rem;margin-bottom:12px}.account-auth p{margin:12px 0;color:var(--muted)}.account-auth label{display:block;font-weight:600;margin-top:16px}.account-auth input{display:block;width:100%;font:inherit;min-height:48px;margin:8px 0 16px;padding:12px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink)}.account-auth input:focus-visible{outline:3px solid #2666cc;outline-offset:3px}.account-auth .lesson-actions{flex-wrap:wrap;gap:12px}.account-auth button:disabled{opacity:.6;cursor:wait}@media(max-width:760px){.account-auth{padding:24px 20px}.account-auth .lesson-actions>*{flex:1 1 100%}}
/* Aulas particulares: extend the established student workspace. */
.private-row{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}.private-actions{margin:18px 0}.private-packages{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.private-packages h3{margin:12px 0 18px}.private-packages p{margin:14px 0}.private-lesson{border:1px solid var(--line);background:white;border-radius:20px;padding:26px;margin:16px 0}.private-lesson h3{margin:12px 0 8px;overflow-wrap:anywhere}.private-lesson p{color:var(--muted)}.private-form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:20px 0}.private-form-grid label,.private-teacher label{display:flex;flex-direction:column;gap:9px;font-weight:600;min-width:0}.private-form-grid input,.private-form-grid select,.private-teacher select{font:inherit;width:100%;min-width:0;padding:12px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink);min-height:46px}.private-register{margin-top:20px}.private-register summary,.private-edit summary{cursor:pointer;font-weight:600;font-size:1.05rem;min-height:30px}.private-edit{margin-top:20px;border-top:1px solid var(--line);padding-top:18px}.private-edit form+form{border-top:1px solid var(--line);padding-top:15px;margin-top:20px}.private-materials{padding-left:20px;margin-top:20px}.private-materials li{margin:12px 0;overflow-wrap:anywhere}.private-materials a{text-decoration:underline}.private-materials button{margin-left:15px}.private-teacher h2{margin:10px 0 20px}.private-teacher p{margin-top:16px}.private-notice{padding:16px;border:1px solid #8dac6d;border-radius:12px;background:#e7efdd;margin-bottom:20px}.private-stats{margin-top:20px}.private-actions p{flex:1 1 300px}.private-lesson input:focus-visible,.private-register input:focus-visible,.private-teacher select:focus-visible{outline:3px solid #2666cc;outline-offset:3px}
@media(max-width:760px){.private-packages,.private-form-grid{grid-template-columns:1fr}.private-lesson{padding:22px 18px}.private-lesson .primary{width:100%;text-align:center}.mobile-nav{overflow-x:auto;justify-content:flex-start}.mobile-nav .nav-item{flex:0 0 68px;min-width:68px}.private-register{padding:22px 18px}.private-stats .stat{padding:18px 12px}.private-stats .stat strong{font-size:2rem}}

.student-area-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:24px 0}.student-area-card{display:block;transition:border-color .15s}.student-area-card:hover{border-color:var(--green)}.student-area-card .symbol{display:flex;width:42px;height:42px;color:var(--green)}.student-area-card h2{font-size:1.5rem;margin:18px 0 12px}.student-area-card p{color:var(--muted);min-height:52px}.student-area-profile{display:flex;gap:24px;justify-content:space-between;align-items:center}.student-area-profile p{overflow-wrap:anywhere}.shared-file-list{display:grid;gap:16px}.shared-file-card{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:20px}.shared-file-card h3{margin:12px 0;overflow-wrap:anywhere}.shared-file-card p{overflow-wrap:anywhere}.shared-file-card>[role=status]{grid-column:1/-1;margin:0}#shared-upload input[type=file]{font-size:1rem}#shared-upload{margin-top:20px}@media(max-width:760px){.student-area-grid{grid-template-columns:1fr}.student-area-profile,.shared-file-card{display:block}.student-area-profile .secondary{display:inline-flex;margin-top:18px}.shared-file-card .lesson-actions{margin-top:18px}}

.admin-top-actions{margin-bottom:24px}.admin-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:24px 0}.admin-contracts{margin:18px 0 24px}.admin-filters{display:grid;grid-template-columns:2fr 1fr;gap:20px;margin-bottom:20px}.admin-filters label{display:flex;flex-direction:column;gap:8px;font-weight:600}.admin-filters input,.admin-filters select{font:inherit;padding:12px;min-height:46px;min-width:0;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink)}.admin-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:white}.admin-table{border-collapse:collapse;width:100%;font-size:1rem;text-align:left}.admin-table th{background:#edf4ee;font-weight:600;font-size:.875rem}.admin-table td,.admin-table th{padding:16px 18px;border-bottom:1px solid var(--line)}.admin-table td:first-child{min-width:220px}.admin-table td span,.admin-table td small{display:block;overflow-wrap:anywhere;max-width:300px;margin-top:6px;font-size:.875rem;color:var(--muted)}.admin-table td .badge{display:inline-block}.admin-table tr:last-child td{border-bottom:0}.admin-table tr.selected{background:#f3f7ec}.admin-table button{white-space:nowrap}.admin-detail{margin-top:40px;border-top:2px solid var(--green);padding-top:30px;scroll-margin-top:30px}.admin-detail section[id]{scroll-margin-top:24px}.admin-detail-tabs{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.admin-detail-tabs a{padding:10px 16px;border:1px solid var(--line);border-radius:9px;background:white;font-weight:600}.admin-agenda{margin-top:40px}.admin-agenda h3{font-size:1.15rem;overflow-wrap:anywhere;margin-top:12px}.admin-agenda article{margin-bottom:14px}.teacher-admin-entry{display:flex;gap:24px;align-items:center;justify-content:space-between;margin-top:24px;border-color:#8dac76;background:#e7efdd}.teacher-admin-entry h2{font-size:1.5rem}.teacher-admin-entry .primary{flex-shrink:0}@media(max-width:760px){.admin-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-filters{grid-template-columns:1fr}.admin-table td,.admin-table th{padding:14px 12px}.teacher-admin-entry{display:block}.teacher-admin-entry .primary{display:inline-flex;margin-top:14px}.admin-stats .stat{padding:18px}.admin-stats .stat strong{font-size:2rem}.admin-detail .section-heading{display:block}}

.admin-textarea{display:flex;flex-direction:column;gap:9px;font-weight:600;margin:18px 0}.admin-textarea textarea,.admin-textarea input{font:inherit;min-width:0;width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;background:white;color:var(--ink)}.admin-textarea textarea{resize:vertical}.record-paragraph{white-space:pre-wrap;overflow-wrap:anywhere}.admin-extra-records{margin-top:30px}.admin-notes,.admin-progress-entry{margin-top:16px}.admin-progress-entry h3{margin-top:14px;overflow-wrap:anywhere}.admin-payment{margin-top:18px;border-top:1px solid var(--line);padding-top:16px}.admin-payment summary{font-weight:600;cursor:pointer}.admin-week,.learner-progress{margin-top:36px}.admin-week-controls{margin:20px 0}.admin-week-controls label{display:flex;gap:10px;align-items:center}.admin-week-controls input{font:inherit;padding:10px;border:1px solid var(--line);border-radius:10px}.admin-week-scroll{overflow-x:auto;margin-bottom:16px}.admin-week-grid{display:grid;grid-template-columns:repeat(7,minmax(150px,1fr));gap:12px;min-width:1122px}.admin-week-day{border:1px solid var(--line);border-radius:14px;background:#edf4ee;padding:14px;min-height:170px}.admin-week-day h3{font-size:1rem;text-transform:capitalize;margin-bottom:14px}.admin-week-lesson{background:white;border:1px solid var(--line);border-radius:10px;padding:13px;margin-bottom:12px;overflow-wrap:anywhere}.admin-week-lesson strong{display:block;margin-top:10px}.admin-week-lesson p{font-size:.875rem;margin:9px 0}.admin-week-lesson button{font-size:.875rem;display:block;margin-top:10px;padding:8px}.admin-week-lesson.cancelled{opacity:.7}.admin-week-lesson.completed{border-color:#608f5b}.admin-low-credit,.admin-cal-panel{margin-top:26px}.admin-cal-panel details{margin-top:20px}.admin-cal-booking{margin-top:18px;padding-top:20px;border-top:1px solid var(--line)}.admin-cal-panel h3{margin-top:15px}.admin-cal-panel summary{cursor:pointer;font-weight:600}.admin-extra-records .lesson-panel{margin-bottom:16px}@media(max-width:760px){.admin-week-controls label{width:100%;justify-content:center;order:-1}.admin-week-controls button{flex:1}.admin-week-grid{min-width:1122px}.admin-payment .private-form-grid{grid-template-columns:1fr}.admin-week-controls{gap:12px}}
.admin-credit-alert{background:#fff0c4;color:#704b0a!important}.admin-extra-records .section-heading{scroll-margin-top:30px}

.return-to-site{font-size:.875rem;text-align:center}.return-to-site-desktop{margin-top:20px;width:100%;padding:12px 10px}.return-to-site-mobile{display:none}@media(max-width:760px){.return-to-site-mobile{display:inline-flex;margin-top:16px;min-height:44px;padding:10px 16px}}