@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:#173b37;--muted:#73817a;--green:#195b4c;--lime:#d8ef9b;--paper:#f7f8f2;--line:#e1e6dc;--purple:#e9e4f4}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px 'DM Sans',sans-serif}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #7cab50;outline-offset:4px}a{color:inherit;text-decoration:none}button{border:0;background:none;color:inherit}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:Manrope,sans-serif}h1{letter-spacing:-3px;line-height:1.1;font-weight:500}h2{letter-spacing:-1.3px;font-weight:600}p{line-height:1.7}.wrap{max-width:1250px;margin:auto;padding:0 48px}header{height:94px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.logo{font:800 23px 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Georgia}.float1{top:20px;right:35px;transform:rotate(10deg)}.float2{bottom:18px;left:24px;transform:rotate(-12deg)}.sample{background:#fff;position:absolute;left:42px;right:37px;top:70px;border:1px solid #e4e8de;border-radius:14px;box-shadow:0 18px 40px #244a3215;transform:rotate(-3deg);padding:23px}.sample-head{display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted)}.sample h3{margin:23px 0 16px;font-size:15px}.equation{font-family:Georgia,'Times New Roman',serif;font-size:29px;line-height:1.7;letter-spacing:.3px}.sample .equation{background:#f7f8f2;border-radius:7px;text-align:center;padding:12px}.sample-step{display:flex;gap:10px;align-items:center;margin-top:18px;font-size:11px}.round{height:24px;width:24px;flex-shrink:0;display:grid;place-items:center;border-radius:50%;background:#edf3e2;color:#597c40;font-size:11px}.understood{position:absolute;bottom:35px;right:18px;background:#fff;padding:13px 18px;border-radius:10px;box-shadow:0 6px 25px 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@media(min-width:1500px){.wrap{max-width:1370px}.hero{gap:100px}.hero-art{height:440px}.hero h1{font-size:68px}}
@media(max-width:900px){.wrap{padding:0 24px}.hero{gap:25px}.hero h1{font-size:46px}.hero-art{height:360px}.sample{left:20px;right:20px;top:55px;padding:18px}.nav{gap:15px}.nav a{display:none}.dashboard-layout{grid-template-columns:1fr}.progress-card{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.studio{grid-template-columns:1fr 1fr}.problem-pane{padding:22px}.steps-pane{padding:22px 18px}.step-actions{flex-wrap:wrap}.trust{gap:20px}.subject-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){header{height:76px}.logo{font-size:20px}.nav{gap:8px}.nav .btn{padding:10px 12px;font-size:11px}.hero{grid-template-columns:1fr;padding:38px 0 35px;gap:30px}.hero h1{font-size:48px}.hero p{font-size:14px}.hero-art{height:350px}.sample{left:30px;right:30px;top:42px}.understood{bottom:20px}.trust{flex-wrap:wrap;font-size:10px;gap:12px 23px}.section{padding:35px 0}.section-top{align-items:start;gap:12px}.section h2{font-size:25px}.class-grid{gap:10px}.class-card{padding:17px 12px;min-height:160px}.class-card .tag{top:13px;right:9px;font-size:7px;padding:4px}.class-card .roman{font-size:30px;margin-top:12px}.class-card .card-bottom{font-size:9px;gap:5px}.how{grid-template-columns:1fr;gap:23px}.how .num{float:left;margin-right:20px;font-size:22px}.how p{margin-left:44px}.bottom-banner{padding:25px;display:block}.bottom-banner .btn{margin-top:20px}.bottom-banner h2{font-size:22px}footer{flex-wrap:wrap}.subject-grid{grid-template-columns:1fr 1fr;gap:10px}.subject{padding:20px}.page-head h1{font-size:32px}.topic{padding:20px;gap:15px}.topic-icon{height:48px;width:48px;font-size:24px}.topic h3{font-size:17px}.topic-meta{flex-wrap:wrap;gap:10px}.topic .btn{padding:10px 13px}.studio-top{align-items:start}.studio-top h2{font-size:19px}.studio{grid-template-columns:1fr}.problem-pane{border-right:0;border-bottom:1px solid var(--line);padding:24px}.concept{margin-top:20px}.steps-pane{padding:24px}.studio-top .btn{font-size:10px;padding:11px}.studio-top .mode{font-size:8px;padding:6px}.chat-panel{padding:17px}.chat-head{gap:10px}.chat-head small{max-width:150px;text-align:right}.chat-form .btn{padding:12px}.practice-layout{grid-template-columns:1fr}.panel{padding:22px}.lesson-row{padding:17px;gap:12px}.lesson-row .btn{padding:9px 12px;font-size:10px}.lesson-row h3{font-size:13px}.view-header{align-items:start;gap:20px}.view-header .btn{padding:10px;font-size:10px}.crumb{flex-wrap:wrap}.section-top .pill{white-space:nowrap}}
@media(max-width:450px){header{gap:10px}.nav .back-btn{font-size:10px;white-space:nowrap}.nav .btn{font-size:10px;padding:10px;white-space:nowrap}.hero-actions .btn{font-size:11px;padding:13px 15px;white-space:nowrap}.sample{left:22px;right:22px;padding:16px}.sample h3{font-size:13px;margin:18px 0 12px}.sample .equation{font-size:20px;white-space:nowrap;padding:12px 3px}.sample-step{font-size:10px;gap:8px;margin-top:14px}.sample-head{font-size:8px}.understood{right:12px;bottom:20px;padding:11px 13px}.understood b{font-size:11px}.hero-art{height:330px}.class-card .arrow{font-size:18px}}
@media(max-width:450px){.nav>button[data-action="progress"]{font-size:10px;max-width:42px;padding:0;line-height:1.4}.topic{gap:11px;padding:17px}.topic-main{min-width:0}.topic-icon{width:42px;height:48px}.topic-meta .btn{margin-left:0!important}}
@media(max-width:450px){.studio-top{display:block}.studio-top>div:last-child{margin-top:14px}.studio-top .mode{white-space:nowrap;font-size:10px}.studio-top .btn{font-size:11px}.problem-pane .equation{font-size:20px;padding:16px 5px}.chat-head{align-items:flex-start}}
/* Supplied Heycloud identity and a viewport-fitted learning workspace. */
.logo{display:inline-flex;flex-shrink:0;line-height:0}
.logo img{display:block;width:172px;height:auto;border-radius:5px}
.modal .logo img{width:160px}
.lesson-view{height:100dvh;display:flex;flex-direction:column;max-width:1500px}
.lesson-view>header{height:76px;flex-shrink:0}
.lesson-view>main{display:flex;flex-direction:column;flex:1;min-height:0}
.lesson-view>footer{display:none}
.lesson-view .crumb{margin:14px 0 0;flex-shrink:0}
.lesson-view .studio-top{margin:18px 0;flex-shrink:0}
.lesson-workspace{display:grid;grid-template-columns:1fr 1fr;gap:18px;flex:1;min-height:0;margin-bottom:20px}
.worksheet{overflow-y:auto;overscroll-behavior:contain;min-height:0;min-width:0;padding:23px;background:#f0f3e9;border:1px solid var(--line);border-radius:13px;scrollbar-gutter:stable}
.worksheet .problem-pane{padding:0;background:none;border:0;display:block}
.worksheet .problem-pane h3{font-size:17px;margin:12px 0;line-height:1.5}
.worksheet .problem-pane .equation{font-size:24px;padding:12px}
.worksheet .source{font-size:10px;margin:12px 0 19px}
.worksheet .steps-pane{padding:18px 0 0;border-top:1px solid #dce4d2}
.worksheet .pane-label{margin-bottom:13px}
.worksheet .step{padding:12px;gap:10px}
.worksheet .step .formula{font-size:17px}
.worksheet .step-actions{position:sticky;bottom:-23px;background:#f0f3e9;padding:14px 0 10px;margin-top:8px;border-top:1px solid #dce4d2;flex-wrap:wrap}
.lesson-workspace .chat-panel{margin:0;min-width:0;min-height:0;padding:23px;display:flex;flex-direction:column;overflow:hidden}
.lesson-workspace .chat-head{align-items:flex-start;gap:15px;flex-shrink:0;margin-bottom:14px}
.lesson-workspace .chat-head small{max-width:180px;text-align:right;line-height:1.5}
.lesson-workspace #context{flex-shrink:0}
.lesson-workspace .chat-messages{flex:1;min-height:0;max-height:none;overflow-y:auto;overscroll-behavior:contain;align-content:start;padding:6px 0 18px;scrollbar-gutter:stable}
.lesson-workspace .chat-messages>.note{align-self:center;text-align:center;padding:30px 20px;max-width:360px;justify-self:center}
.chat-welcome-icon{display:block;font-size:30px;color:#88a56b;margin-bottom:15px}
.chat-messages>.note strong{display:block;color:var(--ink);font-size:18px;line-height:1.5}
.lesson-workspace .chat-form{flex-shrink:0;border-top:1px solid var(--line);padding-top:17px}
.lesson-workspace .chat-panel>.note{flex-shrink:0;font-size:10px;line-height:1.5}
.lesson-workspace .bubble{overflow-wrap:anywhere}
@media(max-width:900px) and (min-width:651px){.lesson-view .nav a{display:none}.lesson-view .studio-top h2{font-size:18px}.lesson-workspace{gap:12px}.worksheet,.lesson-workspace .chat-panel{padding:18px}.lesson-workspace .chat-head{flex-direction:column;gap:5px}.lesson-workspace .chat-head small{max-width:none;text-align:left}.lesson-view .studio-top .btn{padding:10px}}
@media(max-width:650px){.logo img{width:140px}.lesson-view{padding:0 14px}.lesson-view>header{height:63px}.lesson-view .crumb{display:none}.lesson-view .studio-top{display:flex;align-items:center;gap:10px;margin:12px 0}.lesson-view .studio-top h2{font-size:15px;letter-spacing:-.4px;margin:5px 0 0}.lesson-view .studio-top .eyebrow{font-size:8px;letter-spacing:1px}.lesson-view .studio-top>div:last-child{margin:0;flex-shrink:0}.lesson-view .studio-top .mode{display:none}.lesson-view .studio-top .btn{font-size:10px;padding:10px}.lesson-workspace{grid-template-columns:1fr;grid-template-rows:minmax(0,.9fr) minmax(0,1.1fr);gap:10px;margin-bottom:12px}.worksheet{padding:15px}.worksheet .problem-pane h3{font-size:14px;margin:8px 0}.worksheet .problem-pane .equation{font-size:20px;padding:8px}.worksheet .source{margin:8px 0;font-size:9px}.worksheet .steps-pane{padding-top:12px}.worksheet .step-actions{bottom:-15px;padding:10px 0}.lesson-workspace .chat-panel{padding:14px}.lesson-workspace .chat-head{margin-bottom:6px;font-size:12px}.lesson-workspace .chat-head small{font-size:8px;max-width:120px}.lesson-workspace .chat-messages{padding:0 0 8px}.lesson-workspace .chat-messages>.note{padding:10px;font-size:11px}.chat-welcome-icon{font-size:22px;margin-bottom:5px}.chat-messages>.note strong{font-size:15px}.lesson-workspace .chat-form{padding-top:10px}.lesson-workspace .chat-form input{padding:11px;font-size:11px}.lesson-workspace .chat-panel>.note{font-size:9px}.lesson-workspace .bubble{padding:10px;font-size:11px}.lesson-workspace .context-chip{font-size:9px;padding:5px 8px;margin:0 0 5px}}
@media(max-width:360px){.logo img{width:118px}.nav{gap:5px}}