:root{--ink:#183447;--blue:#175cd3;--muted:#637587;--line:#dce5ee;--paper:#fff;--bg:#f3f6fa}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Avenir Next,Avenir,Segoe UI,sans-serif;font-size:15px;line-height:1.6}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline-offset:4px;outline:3px solid #79a9f5}a{color:inherit;text-decoration:none}button{color:inherit}h1,h2,h3,p{margin-top:0}h1{letter-spacing:-1.5px;margin-bottom:18px;font-size:42px;font-weight:600;line-height:1.16}h2{letter-spacing:-.5px;font-size:23px;line-height:1.3}h3{font-size:16px;line-height:1.4}p{color:var(--muted)}small{color:var(--muted);font-size:12px}.sidebar{border-right:1px solid var(--line);z-index:10;background:#fff;flex-direction:column;width:250px;padding:34px 22px;display:flex;position:fixed;inset:0 auto 0 0}.brand{letter-spacing:-1px;align-items:center;gap:10px;font-size:29px;font-weight:650;display:flex}.brand-dot{color:var(--blue);margin-left:-10px}.brandmark{background:var(--ink);color:#fff;border-radius:10px 3px;place-items:center;width:34px;height:38px;font-family:Georgia,serif;font-size:30px;display:grid}.sidebar-label{margin:39px 12px 15px;font-size:12px}.nav-item{text-align:left;background:0 0;border:0;border-radius:7px;align-items:center;gap:13px;width:100%;margin:5px 0;padding:12px;font-size:13px;display:flex}.nav-item.active{color:#154b9e;background:#eaf2ff;font-weight:600}.nav-item:hover{background:#f2f6fc}.sidebar-bottom{margin-top:auto;padding:30px 12px 0}.sidebar-bottom p{color:var(--ink);margin:16px 0 9px;font-size:18px;line-height:1.5}.mini-line{background:var(--blue);width:36px;height:3px}.account{background:0 0;border:0;align-items:center;gap:8px;padding:28px 0 0;font-size:12px;display:flex}main{margin-left:250px}.topbar{border-bottom:1px solid var(--line);background:#fff;justify-content:space-between;align-items:center;height:78px;padding:0 48px;font-size:12px;display:flex}.mode{align-items:center;gap:8px;display:flex}.mode i{background:#248269;border-radius:50%;width:7px;height:7px}.workspace{max-width:1350px;margin:auto;padding:44px 48px 20px}.intro{justify-content:space-between;align-items:center;margin-bottom:28px;display:flex}.intro p{margin-bottom:13px}.muted{color:var(--muted);font-size:13px}.progress-orbit{background:conic-gradient(var(--blue) var(--progress),#e1e8f0 0);border-radius:50%;place-items:center;width:124px;height:124px;margin-right:24px;display:grid}.progress-orbit>div{background:var(--bg);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:108px;height:108px;display:flex}.progress-orbit strong{font-size:30px;line-height:1.3}.progress-orbit span{color:var(--muted);font-size:11px}.continue{color:#fff;background:#183f6c;border-radius:14px;grid-template-columns:1.45fr 1fr;gap:28px;padding:32px 36px;display:grid;position:relative;overflow:hidden}.continue h2{max-width:550px;margin:18px 0 12px;font-size:28px}.continue p{color:#d0dfee;max-width:430px;font-size:13px}.continue small{color:#c4d5e8;margin-top:13px;display:block}.pill{border:1px solid #7d9cbd;border-radius:30px;padding:5px 10px;font-size:11px}.primary,.secondary,.text-button{border:0;justify-content:center;align-items:center;gap:9px;font-size:13px;font-weight:600;display:inline-flex}.primary{background:var(--blue);color:#fff;border-radius:7px;padding:12px 18px}.continue .primary{color:#173e6b;background:#fff}.secondary{background:#fff;border:1px solid #c5d3e0;border-radius:7px;padding:10px 15px}.text-button{color:#1856aa;background:0 0;padding:5px 0}.learning-art{flex-direction:column;justify-content:center;align-self:center;min-height:185px;display:flex;position:relative}.learning-art svg{width:100%;position:relative}.art-grid{background-image:linear-gradient(#ffffff0b 1px,#0000 1px),linear-gradient(90deg,#ffffff0b 1px,#0000 1px);background-size:40px 40px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(90deg,#0000,#000);mask-image:linear-gradient(90deg,#0000,#000)}.art-caption{color:#c2d6ed;text-align:right;margin:10px 5px;font-size:10px}.section-heading{justify-content:space-between;align-items:center;gap:20px;margin:37px 0 20px;display:flex}.section-heading h2{margin-bottom:5px}.section-heading p{margin-bottom:0;font-size:13px}.route-grid{grid-template-columns:1fr 1fr;gap:0 25px;display:grid}.module-tile{border:0;border-bottom:1px solid var(--line);text-align:left;background:0 0;align-items:center;gap:17px;padding:20px 4px;display:flex}.module-tile:hover{background:#eaf0f8}.module-tile>div{flex:1}.module-tile h3{margin:0 0 4px}.module-tile p{margin:0;font-size:11px}.volume{color:#225794;background:#e5edf8;border-radius:5px;place-items:center;width:39px;height:44px;font-size:16px;display:grid}.bottom-note{align-items:center;gap:17px;margin-top:26px;padding:23px 0;display:flex}.bottom-note p{flex:1;margin:0;font-size:13px}.bottom-note strong{color:var(--ink)}footer{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;gap:12px;margin-top:38px;padding:20px 0;font-size:10px;display:flex}.module-tabs{flex-wrap:wrap;gap:8px;margin:28px 0;display:flex}.module-tabs button{border:1px solid var(--line);background:#fff;border-radius:6px;padding:9px 17px}.module-tabs .selected,.answer.selected{border-color:var(--blue);color:#164b9a;background:#e8f1ff}.search-label{max-width:450px;margin:18px 0;font-size:12px;display:block}input,textarea{width:100%;color:var(--ink);background:#fff;border:1px solid #bdcbd8;border-radius:6px;margin-top:6px;padding:11px 12px;display:block}textarea{resize:vertical}.lesson-list{border:1px solid var(--line);background:#fff;border-radius:9px;overflow:hidden}.lesson-list button{border:0;border-bottom:1px solid var(--line);text-align:left;background:#fff;align-items:center;gap:17px;width:100%;padding:21px;display:flex}.lesson-list button:hover{background:#f7faff}.lesson-list strong{flex:1;font-size:14px}.lesson-check{background:#edf2f7;border-radius:50%;flex-shrink:0;place-items:center;width:30px;height:30px;display:grid}.done{color:#157255;background:#e0f3eb}.back{margin-bottom:25px}.reader-layout{grid-template-columns:minmax(0,1fr) 265px;gap:32px;display:grid}.reader{border:1px solid var(--line);background:#fff;border-radius:10px;min-width:0;padding:36px}.reader h1{font-size:32px}.reader h2{margin-top:32px;font-size:21px}.reader>p:not(.muted){color:#344b5b;font-family:Georgia,serif;font-size:17px;line-height:1.9}.reader .muted{font-size:12px}.table-wrap{margin:25px 0;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:12px}th,td{border:1px solid var(--line);text-align:left;min-width:90px;padding:10px}th{background:#eaf1f8}.study-panel{padding-top:10px}.study-panel p{font-size:13px}.study-panel .secondary{margin:10px 0}.study-panel small{display:block}.quiz{border-top:1px solid var(--line);margin-top:30px;padding-top:24px}.answer{text-align:left;background:#fff;border:1px solid #cbd7e4;border-radius:7px;width:100%;margin:8px 0;padding:12px;font-size:12px;display:block}.feedback{color:#795117;background:#fff0d8;border-radius:5px;padding:13px;font-size:13px}.correct{color:#1b674c;background:#def2e7}.lesson-actions{flex-wrap:wrap;gap:10px;margin-top:30px;display:flex}.status{color:#174e96;background:#e8f1ff;border-radius:7px;margin-bottom:20px;padding:12px 18px;font-size:13px}.lab{grid-template-columns:1fr 1fr;gap:45px;margin-top:35px;display:grid}.lab>section{border:1px solid var(--line);background:#fff;border-radius:10px;padding:30px}.lab p{font-size:13px}.field{margin-bottom:18px;font-size:13px;display:block}.lab .lab-result{background:#e7f0fc;border:0}.lab-result>strong{margin:8px 0 25px;font-size:48px;display:block}.result-row{border-bottom:1px solid #cbd9ea;justify-content:space-between;padding:15px 0;font-size:13px;display:flex}.lab-result p{margin-top:24px}.downloads a{border-bottom:1px solid var(--line);align-items:center;gap:18px;padding:22px 5px;display:flex}.downloads a>div{flex:1}.downloads small{display:block}.downloads strong{font-size:14px}.note-card{border:1px solid var(--line);background:#fff;border-radius:8px;margin-bottom:20px;padding:25px}.note-card p{white-space:pre-wrap;margin:15px 0 0}.empty{text-align:center;padding:60px 25px}.empty svg{color:var(--blue)}.empty h2{max-width:450px;margin:20px auto}.modal-overlay{z-index:50;background:#122c46a6;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal{background:#fff;border-radius:14px;max-width:480px;padding:35px;position:relative}.modal p{font-size:13px}.modal .secondary{margin-left:10px}.close{background:0 0;border:0;position:absolute;top:12px;right:12px}.modal h2{margin-top:12px}@media (min-width:1500px){.workspace{padding-top:60px}.intro h1{font-size:50px}}@media (max-width:1100px){.sidebar{width:215px;padding:28px 15px}main{margin-left:215px}.workspace{padding:30px}.topbar{padding:0 30px}.reader-layout{grid-template-columns:minmax(0,1fr)}.study-panel{max-width:650px}.reader{padding:28px}.continue{padding:27px}.continue h2{font-size:24px}.progress-orbit{margin-right:0}}@media (max-width:760px){.sidebar{border-right:0;border-bottom:1px solid var(--line);width:100%;padding:17px 20px 8px;position:static}.brand{font-size:25px}.brandmark{width:29px;height:31px;font-size:25px}.sidebar-label,.sidebar-bottom p,.sidebar-bottom small,.mini-line{display:none}.sidebar nav{gap:3px;margin-top:13px;display:flex;overflow-x:auto}.nav-item{white-space:nowrap;gap:7px;width:auto;padding:10px;font-size:11px}.nav-item svg{width:15px}.sidebar-bottom{padding:0;position:absolute;top:8px;right:20px}.account{padding-top:17px;font-size:11px}main{margin-left:0}.topbar{height:53px;padding:0 20px;font-size:10px}.workspace{padding:28px 20px}.intro h1{letter-spacing:-1px;font-size:32px}.intro p{font-size:13px}.progress-orbit{flex-shrink:0;width:77px;height:77px;margin-left:15px}.progress-orbit>div{width:66px;height:66px}.progress-orbit strong{font-size:22px}.progress-orbit span{font-size:8px}.continue{grid-template-columns:1fr;padding:25px}.learning-art{display:none}.continue h2{font-size:24px}.route-grid{grid-template-columns:1fr}.section-heading{align-items:flex-start}.section-heading .text-button{text-align:right;font-size:11px}.section-heading h2{font-size:20px}.bottom-note{flex-wrap:wrap}.bottom-note .text-button{margin-left:38px}.reader{padding:23px 19px}.reader h1{font-size:27px}.reader>p:not(.muted){font-size:16px}.lab{grid-template-columns:1fr;gap:20px}.lab>section{padding:23px}h1{font-size:33px}.lesson-list button{gap:10px;padding:17px 13px}.lesson-list strong{font-size:12px}.lesson-list small{font-size:10px}.module-tabs button{padding:8px 12px;font-size:12px}.mode{display:none}.downloads strong{font-size:12px}footer{flex-direction:column}.modal{padding:28px}.desktop{display:none}}.landing{background:#fff}.landing-nav{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;max-width:1220px;margin:auto;padding:27px 40px;display:flex}.landing-nav nav{align-items:center;gap:30px;font-size:13px;display:flex}.landing-main{max-width:1220px;margin:0 auto;padding:0 40px}.landing-hero{grid-template-columns:1.4fr 1fr;align-items:center;gap:80px;padding:85px 0;display:grid}.landing-hero h1{letter-spacing:-2px;font-size:60px;line-height:1.1}.landing-hero>div>p:not(.muted){max-width:510px;font-size:17px;line-height:1.8}.landing-actions{align-items:center;gap:26px;margin:30px 0 18px;display:flex}.landing-hero small{font-size:11px}.landing-map{background:#edf3fa;border-radius:60px 12px 12px;padding:36px}.map-label{color:var(--muted);margin-bottom:20px;padding-left:48px;font-size:12px}.map-step{align-items:center;gap:20px;padding:17px 0;display:flex;position:relative}.map-step:not(:last-of-type):after{content:"";background:#b4c8e0;width:1px;height:26px;position:absolute;bottom:-12px;left:11px}.map-step svg{color:var(--blue);flex-shrink:0;width:24px}.map-step strong{font-size:19px;font-weight:600}.map-step p{margin:2px 0;font-size:12px}.map-end{border-top:1px solid #d6e1ed;margin-top:15px;padding:20px 0 0 45px;font-size:12px}.landing-roadmap{scroll-margin-top:25px}.landing-roadmap .section-heading{border-top:1px solid var(--line);padding-top:34px}.landing-roadmap h2{margin:8px 0;font-size:35px}.landing-roadmap ol{grid-template-columns:1fr 1fr;gap:0 55px;padding:0;list-style:none;display:grid}.landing-roadmap li{border-bottom:1px solid var(--line);align-items:flex-start;gap:20px;padding:25px 0;display:flex}.roadmap-number{color:#97aabd;font-size:25px;line-height:1.4}.landing-roadmap li>div{flex:1}.landing-roadmap li h3{margin:0 0 7px;font-size:17px}.landing-roadmap li p{max-width:350px;margin:0;font-size:13px}.landing-roadmap li svg{color:#7c91a5;flex-shrink:0;margin-top:4px}.landing-practice{background:#f3f6fa;border-radius:12px;grid-template-columns:1.2fr 1fr;gap:80px;margin:70px 0;padding:40px;display:grid}.landing-practice h2{max-width:370px;font-size:29px}.landing-practice p{font-size:14px}.landing-benefits{align-self:center}.landing-benefits p{align-items:center;gap:13px;display:flex}.benefit-check{color:#18745c;font-size:18px}.landing-cta{text-align:center;padding:20px 0 60px}.landing-cta h2{font-size:32px}.landing-cta p{max-width:460px;margin:0 auto 25px}.login-page{max-width:490px;min-height:100vh;margin:auto;padding:45px 22px}.login-card{border:1px solid var(--line);background:#fff;border-radius:12px;margin:35px 0 20px;padding:32px}.login-card h1{font-size:32px}.login-card p{font-size:14px}.login-card form>.primary{width:100%;margin:20px 0;display:block}.login-card>.text-button{margin-top:10px}.login-card .status{margin-top:20px}.login-card small{display:block}@media (max-width:760px){.landing-nav{padding:20px}.landing-nav nav{gap:14px}.landing-nav nav>a:first-child{display:none}.landing-main{padding:0 23px}.landing-hero{grid-template-columns:1fr;gap:35px;padding:45px 0}.landing-hero h1{font-size:42px}.landing-hero>div>p:not(.muted){font-size:15px}.landing-map{padding:24px 30px}.landing-actions{flex-wrap:wrap;gap:16px}.landing-roadmap ol{grid-template-columns:1fr}.landing-roadmap .section-heading{display:block}.landing-roadmap .section-heading>p{margin-top:15px}.landing-practice{grid-template-columns:1fr;gap:15px;margin:40px 0;padding:27px}.landing-cta h2{font-size:27px}.landing-cta p{font-size:14px}.login-card{padding:26px}}.lesson-callout{border:1px solid var(--line);border-left:3px solid var(--blue);color:var(--ink);overflow-wrap:anywhere;background:#eaf1f8;margin:25px 0;padding:16px 18px;font-size:15px;font-weight:400;line-height:1.7}.lesson-callout strong{font-weight:700}.lab-privacy{font-size:13px}.lab-exercise{border:1px solid var(--line);background:#fff;border-radius:10px;margin-top:28px;padding:24px}.lab-exercise .field{max-width:280px}.lab-details{margin-top:24px}.lab-details summary{cursor:pointer;font-weight:600}.lab-details caption{text-align:left;margin-bottom:10px}.lab-result .result-row{flex-wrap:wrap;gap:18px}.lab-result .result-row b{overflow-wrap:anywhere}
