@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:#252d29;--muted:#687069;--cream:#f6f4ed;--paper:#fffefa;--line:#dcded4;--brick:#b7492d;--lime:#d8e79a;--green:#344f3d}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font-family:'DM Sans',Arial,sans-serif;font-size:16px;line-height:1.6}a{color:inherit}button,input,textarea,select{font:inherit}button,a,input,textarea,summary{outline-offset:5px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--brick)}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}h1,h2,h3,h4{font-family:Manrope,Arial,sans-serif;line-height:1.15;letter-spacing:-.045em;margin:0 0 18px}h1{font-size:clamp(36px,4.3vw,67px);font-weight:600}h2{font-size:30px;font-weight:600}h3{font-size:21px}p{margin:0 0 18px}.small,.eyebrow,.side-label{font-size:11px;letter-spacing:.14em;font-weight:700}.eyebrow{color:var(--brick);margin-bottom:20px}.sidebar{position:fixed;inset:0 auto 0 0;width:260px;background:var(--ink);color:#ecefe3;padding:39px 26px;display:flex;flex-direction:column;z-index:5}.brand{display:flex;gap:12px;text-decoration:none;font-size:11px;letter-spacing:.17em;line-height:1.65}.brand b{font-size:12px;letter-spacing:.04em}.brandmark{background:var(--brick);width:39px;height:40px;display:grid;place-items:center;font-size:30px;line-height:1;transform:rotate(-4deg)}.side-label{font-size:9px;color:#9ca89d;margin:55px 0 15px;letter-spacing:.12em}nav{display:grid;gap:6px}nav a{text-decoration:none;padding:12px 11px;border-radius:5px;font-size:14px;color:#c4cfc3}nav a span{display:inline-block;font-size:10px;color:#99a38f;width:26px}nav a:hover{background:#333e35}nav a.active{background:var(--lime);color:#26322a}nav a.active span{color:#455535}.sidebar-progress{margin-top:40px;border-top:1px solid #4a534a;padding-top:24px}.sidebar-progress .small{color:#a8b3a5;font-size:9px}.sidebar-progress strong{font-family:Manrope,sans-serif;font-size:38px;font-weight:500}.track{height:4px;background:#4b574a;border-radius:9px;overflow:hidden}.track i{display:block;height:100%;background:var(--lime);transition:width .3s;width:0}.sidebar-progress p{color:#b6c0ae;font-size:11px;margin-top:10px}.side-bottom{margin-top:auto;font-size:12px;color:#bac4b4}.side-bottom span{display:block;margin-top:22px;font-size:9px;letter-spacing:.1em;color:#8e9b8a}.page{margin-left:260px}header{height:85px;border-bottom:1px solid var(--line);margin:0 48px;display:flex;align-items:center;justify-content:space-between;font-size:10px;letter-spacing:.12em}.save-state{color:var(--muted);letter-spacing:.01em;font-size:11px}.save-state:first-letter{color:#688b52}main{padding:44px 48px 70px;max-width:1500px;margin:auto;min-height:80vh}.hero{display:grid;grid-template-columns:1.35fr 1fr;gap:30px;padding:10px 0 35px}.hero h1 em{font-family:Georgia,serif;font-weight:400;color:var(--brick)}.hero p{max-width:540px;color:var(--muted);font-size:16px}.pill{display:inline-block;border:1px solid var(--line);border-radius:20px;padding:5px 11px;font-size:10px;letter-spacing:.03em;margin:0 5px 8px 0}.hero-actions{margin-top:25px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}.btn{border:0;background:var(--ink);color:white;text-decoration:none;padding:13px 20px;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;gap:23px;font-size:13px;font-weight:600}.btn:hover{background:#435343}.btn.brick{background:var(--brick)}.btn.brick:hover{background:#953d27}.btn.light{background:transparent;border:1px solid var(--line);color:var(--ink)}.btn.light:hover{background:#e8eadf}.brick-art{min-height:300px;background:#e8e9df;position:relative;overflow:hidden;border-radius:6px;display:flex;flex-direction:column;justify-content:flex-end;padding:24px}.brick-art .art-label{position:absolute;top:23px;left:23px;font-size:10px;letter-spacing:.12em}.brick-art .art-number{position:absolute;right:22px;top:16px;font-size:32px;color:#9ba68e;font-family:Georgia,serif}.wall{display:grid;grid-template-columns:repeat(6,1fr);gap:5px;width:95%;margin:30px auto 5px;transform:perspective(600px) rotateY(-18deg) rotateX(15deg) rotateZ(-8deg)}.wall span{height:43px;background:#bc6749;box-shadow:inset 0 4px 0 #cf8666,3px 5px 0 #8c4934;border-radius:1px;grid-column:span 2}.wall span:nth-child(4n){background:#a95439}.wall span:nth-child(5){background:#dce5ac;box-shadow:inset 0 4px 0 #edf0c7,3px 5px 0 #a9b17d}.wall span:nth-child(7){opacity:.45}.wall span:nth-child(8){opacity:.2}.art-caption{display:flex;justify-content:space-between;align-items:end;border-top:1px solid #c7cdbd;margin-top:25px;padding-top:12px;font-size:11px}.art-caption strong{font-family:Manrope,sans-serif;font-size:19px;font-weight:500;line-height:1.3}.stats{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:40px;padding:18px 0}.stats>div{padding:0 24px;border-right:1px solid var(--line)}.stats>div:first-child{padding-left:0}.stats>div:last-child{border:0}.stats strong{font-family:Manrope,sans-serif;font-size:25px;font-weight:500}.stats span{display:block;font-size:11px;color:var(--muted)}.section-heading{display:flex;justify-content:space-between;align-items:end;margin:0 0 20px;gap:20px}.section-heading h2{margin:0}.section-heading p{font-size:12px;color:var(--muted);margin:0}.module-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.module-card{background:var(--paper);border:1px solid var(--line);border-radius:6px;overflow:hidden}.module-top{padding:23px 25px 15px;display:flex;gap:16px}.module-num{font-family:Georgia,serif;color:var(--brick);font-size:37px;line-height:1}.module-top h3{margin:3px 0 8px;font-size:19px}.module-top p{font-size:11px;color:var(--muted);margin:0}.lesson-row{display:flex;gap:12px;padding:15px 24px;border-top:1px solid #eeeee5;text-decoration:none;font-size:13px;align-items:center}.lesson-row:hover{background:#f0f2e6}.lesson-row .circle{border:1px solid #b5bcac;border-radius:50%;width:21px;height:21px;flex-shrink:0;text-align:center;font-size:11px;line-height:20px}.lesson-row.done .circle{background:var(--green);color:white;border-color:var(--green)}.lesson-row .duration{margin-left:auto;white-space:nowrap;font-size:10px;color:var(--muted)}.banner{margin:25px 0 0;background:#e9eddc;border:1px solid #d8dec9;border-radius:5px;padding:22px 25px;display:flex;align-items:center;gap:20px}.banner p{margin:4px 0 0;font-size:13px;color:var(--muted)}.banner .btn{margin-left:auto;white-space:nowrap}.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:25px}.breadcrumb a{text-decoration:none}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:38px}.lesson-article h1{font-size:40px}.lesson-meta{display:flex;gap:10px;margin-bottom:15px}.objective{font-size:17px;line-height:1.6;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:25px;margin-bottom:30px}.reading h2{font-size:23px;letter-spacing:-.03em;margin-top:28px}.reading p{font-size:16px;line-height:1.85}.callout{background:#e9eddc;border-left:3px solid #8c9d63;padding:22px 25px;margin:30px 0;border-radius:0 4px 4px 0}.callout p{font-size:14px;margin:8px 0 0}.callout.practice{background:#f0e6d9;border-color:var(--brick)}.lesson-rail{border-left:1px solid var(--line);padding-left:23px}.lesson-rail h3{font-size:15px;letter-spacing:0}.lesson-rail a{display:block;text-decoration:none;font-size:12px;color:var(--muted);padding:9px 0;border-bottom:1px solid var(--line)}.lesson-rail a.current{font-weight:700;color:var(--brick)}.sticky{position:sticky;top:24px}.quiz{background:var(--paper);border:1px solid var(--line);padding:25px;border-radius:6px;margin-top:30px}.quiz h2{font-size:25px}.quiz fieldset{border:0;border-top:1px solid var(--line);padding:20px 0;margin:0;min-width:0}.quiz legend{float:left;width:100%;font-weight:600;font-size:14px;margin:0 0 14px}.options{clear:both;display:grid;gap:8px}.option{display:flex;align-items:flex-start;gap:10px;border:1px solid var(--line);border-radius:4px;padding:11px;font-size:13px;cursor:pointer}.option:has(input:checked){border-color:var(--green);background:#edf1e3}.option input{margin-top:4px;accent-color:var(--green)}.feedback{font-size:13px;border-radius:4px;padding:10px 13px;margin-top:12px;background:#f4e4d9}.feedback.correct{background:#e4ecd8}.quiz-result{font-size:14px;padding:16px 0 0}.quiz-result strong{color:var(--green)}.lesson-bottom{display:flex;justify-content:space-between;gap:10px;margin-top:25px}.notes-label{font-size:13px;display:block;font-weight:600;margin:20px 0 8px}textarea{width:100%;min-height:110px;border:1px solid #bdc5b5;border-radius:4px;background:var(--paper);padding:13px;color:var(--ink);resize:vertical}input:not([type=radio]):not([type=checkbox]){width:100%;border:1px solid #bdc5b5;border-radius:4px;background:var(--paper);padding:11px;color:var(--ink)}.page-intro{max-width:720px;margin-bottom:30px}.page-intro h1{font-size:46px}.page-intro p{color:var(--muted)}.lab-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:25px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:27px}.panel h2{font-size:24px}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.input-grid label{font-size:12px;font-weight:600}.input-grid input{display:block;margin-top:7px}.input-grid small{font-weight:400;color:var(--muted)}.results{background:var(--ink);color:white}.result-big{font-family:Manrope,sans-serif;font-size:46px;color:var(--lime);margin:8px 0 20px;letter-spacing:-.05em}.result-row{display:flex;justify-content:space-between;border-top:1px solid #596252;padding:14px 0;font-size:13px;gap:15px}.result-row strong{white-space:nowrap}.result-note{font-size:11px;color:#ccd3c6;margin-top:15px}.formula{background:#eef0e4;padding:15px;border-radius:4px;font-size:13px;margin-top:22px}.validation{color:#a62c1c;font-size:13px;margin:10px 0}.tool-tabs{display:flex;gap:8px;margin-bottom:25px;flex-wrap:wrap}.tool-tabs button{border:1px solid #c4ccbc;border-radius:30px;background:transparent;padding:9px 17px;font-size:12px}.tool-tabs button.active{background:var(--ink);color:white;border-color:var(--ink)}.script-card{background:var(--paper);padding:25px;border:1px solid var(--line);border-radius:5px;margin-bottom:15px}.script-card h2{font-size:22px}.script-card blockquote{border-left:2px solid var(--brick);padding-left:18px;margin:15px 0;font-size:16px;line-height:1.8}.script-card p,.script-card li{font-size:14px}.checklist{list-style:none;padding:0}.checklist li{border-bottom:1px solid var(--line);padding:12px 0;font-size:14px}.checklist label{display:flex;align-items:flex-start;gap:12px;cursor:pointer}.checklist input{accent-color:var(--green);width:17px;height:17px;margin-top:3px;flex-shrink:0}.glossary{display:grid;grid-template-columns:1fr 1fr;gap:15px}.glossary .panel h2{font-size:19px}.glossary p{font-size:14px;margin:0}.sources li{margin-bottom:17px;font-size:14px}.sources p{font-size:12px;color:var(--muted)}.plan-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.plan-grid label{display:block;font-size:13px;margin:16px 0 6px;font-weight:600}.plan-grid textarea{min-height:100px}.plan-grid .full{grid-column:1/-1}.plan-actions{display:flex;gap:10px;margin:20px 0;flex-wrap:wrap}.certificate{border:1px solid #afbc93;background:#ecf0de;padding:28px;margin-top:25px}.certificate h2{font-size:28px}.certificate p{font-size:14px}.muted{color:var(--muted);font-size:12px}.error{color:#a62c1c}footer{display:flex;justify-content:space-between;gap:20px;margin:0 48px;border-top:1px solid var(--line);padding:22px 0;font-size:10px;color:var(--muted)}#toast{position:fixed;right:25px;bottom:25px;background:var(--ink);color:white;padding:12px 20px;border-radius:5px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:20}#toast.visible{opacity:1}.skip{position:fixed;top:-100px;background:white;padding:10px;z-index:25}.skip:focus{top:10px}#storage-warning{background:#ffdcb7;position:sticky;top:0;padding:8px;text-align:center;z-index:30;font-size:12px}details{border-bottom:1px solid var(--line);padding:15px 0}summary{font-weight:600;cursor:pointer}details p{margin-top:14px;font-size:14px}@media(min-width:1500px){main{padding-top:55px}.hero{gap:60px}.hero h1{font-size:70px}}@media(max-width:1150px){.sidebar{width:225px;padding:30px 18px}.page{margin-left:225px}main{padding:30px}header,footer{margin:0 30px}.hero{grid-template-columns:1.2fr 1fr;gap:20px}.hero h1{font-size:47px}.lesson-layout{grid-template-columns:1fr}.lesson-rail{display:none}.lesson-article{max-width:760px}.lab-grid{grid-template-columns:1fr}.result-big{font-size:40px}.module-top{padding:20px}.lesson-row{padding:14px 18px}}@media(max-width:800px){.sidebar{position:static;width:auto;padding:19px 22px;display:block}.brand{font-size:9px}.brand b{font-size:11px}.brandmark{height:35px;width:35px}.side-label,.sidebar-progress,.side-bottom{display:none}nav{display:flex;gap:5px;margin-top:17px;overflow-x:auto}nav a{font-size:11px;padding:8px 10px;white-space:nowrap}nav a span{display:none}.page{margin-left:0}header{height:55px;margin:0 22px}.header-course{font-size:8px}.save-state{font-size:9px}main{padding:25px 22px 45px}.hero{grid-template-columns:1fr 1fr}.hero h1{font-size:40px}.hero p{font-size:14px}.brick-art{min-height:290px;padding:18px}.art-caption{font-size:9px}.art-caption strong{font-size:16px}.wall span{height:35px}.stats{margin-bottom:30px}.section-heading h2{font-size:26px}.section-heading p{display:none}footer{margin:0 22px}.page-intro h1{font-size:39px}.lesson-article h1{font-size:36px}}@media(max-width:580px){.hero{grid-template-columns:1fr;gap:25px}.hero h1{font-size:47px}.hero p{font-size:15px}.brick-art{min-height:230px}.wall{width:72%;margin-top:25px}.wall span{height:30px}.art-caption{margin-top:16px}.module-grid,.plan-grid,.glossary{grid-template-columns:1fr}.stats strong{font-size:22px}.stats>div{padding:0 12px}.stats span{font-size:10px}.banner{align-items:flex-start;flex-direction:column}.banner .btn{margin-left:0}.input-grid{gap:13px}.panel{padding:21px}.lesson-article h1{font-size:33px}.quiz{padding:20px}.lesson-bottom .btn{font-size:11px;gap:6px;padding:12px}.lesson-row .duration{font-size:9px}.lesson-row{font-size:12px}.page-intro h1{font-size:37px}footer{flex-direction:column;gap:4px}.plan-grid .full{grid-column:auto}}
main:focus{outline:none}
@media(max-width:580px){.sidebar nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));overflow:visible;gap:6px}.sidebar nav a{font-size:12px;padding:9px 10px;white-space:normal}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}@media print{.sidebar,header,footer,.btn,.tool-tabs,.plan-actions,#toast{display:none!important}.page{margin:0}main{padding:0}.panel,.script-card,.quiz{break-inside:avoid}.plan-grid{display:block}textarea{border:0;min-height:60px}.page-intro h1{font-size:30px}}
