@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{--bg:#f7f8fa;--ink:#20292d;--muted:#7c858a;--line:#e7eaeb;--green:#1c7861;--pale:#e9f2ed;--orange:#e58c5b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px 'DM Sans',sans-serif}button,input,textarea,select{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #e4ae60;outline-offset:3px}button{border:0;background:none;color:inherit}h1,h2,h3,h4,p{margin:0}h1,h2,h3{font-family:Manrope,sans-serif}h1{font-size:35px;letter-spacing:-1.2px;line-height:1.3}h2{font-size:21px;letter-spacing:-.6px}h3{font-size:17px}p{line-height:1.7}.sidebar{position:fixed;left:0;top:0;bottom:0;width:238px;background:white;border-right:1px solid var(--line);padding:34px 20px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;font-size:27px;font-weight:800;letter-spacing:-1px;padding-left:12px}.brand-icon{background:var(--green);color:white;border-radius:10px;font-size:25px;width:35px;height:35px;text-align:center;margin-right:9px;line-height:30px;position:relative}.brand-icon span{font-size:16px;position:absolute;right:2px;top:0}.brand-dot{color:var(--green)}.workspace-label{font-size:10px;letter-spacing:1.8px;color:#9aa1a3;font-weight:700;margin:47px 14px 16px}nav{display:grid;gap:7px}nav a{display:flex;align-items:center;gap:12px;padding:13px 14px;color:#707a7f;border-radius:7px;font-size:18px}nav a span{font-size:13px;font-weight:500}nav a.active{background:var(--pale);color:var(--green)}nav small,nav i{margin-left:auto;font-size:8px;letter-spacing:.7px;font-style:normal;background:#ecf4ef;color:#478770;padding:4px 5px;border-radius:4px}.sidebar-bottom{margin-top:auto}.mini-promo{margin:30px 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var(--line);border-radius:12px}.article h2{margin:25px 0 12px}.article p{margin:12px 0;color:#657077}.article pre{white-space:pre-wrap;background:#20362e;color:#d1e8d7;padding:24px;border-radius:8px;line-height:1.8;overflow:auto}.article code{font:12px/1.8 monospace}.note{padding:16px;background:#f7f1df;border-left:3px solid #c9a155;border-radius:4px;margin:20px 0;font-size:13px;line-height:1.7}.quiz{margin-top:25px;padding:22px;background:#f2f6f3;border-radius:8px}.quiz button{display:block;text-align:left;background:white;border:1px solid var(--line);border-radius:6px;padding:12px;width:100%;margin-top:8px}.quiz button.correct{border-color:var(--green);background:#dfeee5}.quiz button.wrong{border-color:#c66f57;background:#faebe7}.quiz-result{margin:15px 0}.lesson-side{align-self:start;position:sticky;top:20px}.lesson-side a{display:block;font-size:12px;padding:12px 5px;border-bottom:1px solid 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p{font-size:12px;margin-top:12px;color:#74816f}.suggestion{display:block;padding:12px;text-align:left;background:white;border:1px solid #dce5d8;margin-top:10px;width:100%;border-radius:6px;font-size:12px}.chat{border:1px solid var(--line);border-radius:11px;overflow:hidden;background:white}.chat-messages{padding:25px;min-height:350px;max-height:570px;overflow-y:auto;display:flex;flex-direction:column;gap:18px}.message{padding:16px 20px;background:#f0f4f1;border-radius:2px 12px 12px 12px;max-width:92%;font-size:13px;line-height:1.8;white-space:pre-wrap}.message.user{align-self:flex-end;background:#e9edf9;border-radius:12px 2px 12px 12px}.chat form{display:flex;padding:15px;border-top:1px solid var(--line);gap:10px}.chat input{border:0;flex:1;min-width:0;padding:10px;outline-offset:-2px}.status-line{font-size:11px;color:#829078;padding:14px 24px;border-bottom:1px solid var(--line)}dialog{border:1px solid var(--line);border-radius:14px;padding:25px;width:600px;max-width:92vw;max-height:80vh;box-shadow:0 30px 80px #20352a25}dialog::backdrop{background:#1e302b55;backdrop-filter:blur(3px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.close{font-size:26px}dialog input{padding:14px;width:100%;border:1px solid var(--line);border-radius:7px;margin-bottom:15px}#search-results a{display:block;padding:13px;border-bottom:1px solid var(--line);font-size:13px}#search-results small{display:block;color:var(--muted);margin-top:5px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#203c30;color:white;padding:13px 22px;border-radius:8px;box-shadow:0 7px 25px #0002;z-index:50;opacity:0;pointer-events:none;transition:opacity .2s;font-size:12px}.empty{padding:50px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--muted)}.completion-card{text-align:center;padding:30px}.completion-card b{font-size:44px;color:var(--green)}
@media(min-width:1500px){main{padding-top:45px}.hero{min-height:300px}.hero-art{right:45px;top:10px}.course{padding:28px}.sidebar{width:260px}.shell{margin-left:260px}}
@media(max-width:1150px){.sidebar{width:205px;padding:30px 14px}.shell{margin-left:205px}header{padding:0 26px}main{padding:27px 26px}.hero{padding:28px}.hero h1{font-size:30px}.hero-art{transform:scale(.83);transform-origin:right center;right:0}.stat{padding:0 15px;gap:10px}.stat small{font-size:9px}.course{padding:18px}.tiny-code{display:none}.search-trigger span,.search-trigger kbd{display:none}.lesson-layout{grid-template-columns:1fr}.lesson-side{position:static}.coach-layout{grid-template-columns:210px 1fr}}
@media(max-width:800px){.sidebar{transform:translateX(-100%);visibility:hidden;transition:transform .2s;width:238px;box-shadow:10px 0 40px #0001}.sidebar.open{transform:translateX(0);visibility:visible}.shell{margin:0}.mobile-menu{display:block;font-size:20px}header{height:65px;padding:0 20px}.breadcrumb{margin-right:auto;margin-left:15px}.header-right{gap:15px}.streak{display:none}main{padding:25px 20px}.hero-copy{width:64%}.hero-art{right:-25px;transform:scale(.7)}.hero h1{font-size:29px}.hero p{max-width:270px}.courses{gap:12px}.course{padding:16px}.course h3{font-size:15px}.stats{padding:16px 0}.stat{padding:0 12px}.stat-icon{display:none}.stat b{font-size:20px}.date-label{display:none}footer{margin:0 20px}.coach-layout{grid-template-columns:1fr}.coach-info .suggestion{display:inline-block;width:auto;margin-right:5px}.editors{grid-template-columns:1fr}.editor{border:0;border-bottom:1px solid #3b4b44}.editor textarea{height:180px}.toolbar-actions{flex-wrap:wrap}.editor-toolbar{align-items:flex-start}.editor-toolbar .primary{padding:9px}.editor-toolbar label{display:none}}
@media(max-width:560px){.greeting h1{font-size:24px}.hero{padding:25px;min-height:300px;align-items:flex-start}.hero-copy{width:100%}.hero h1{font-size:30px}.hero p{max-width:280px}.hero-art{opacity:.18;right:-95px;top:55px}.hero .actions{gap:12px}.hero-copy{position:relative}.courses{grid-template-columns:1fr}.course p{min-height:0}.course-top{margin-bottom:13px}.lower-grid{grid-template-columns:1fr}.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.stat:nth-child(2){border:0}.stat-icon{display:grid}.course-meta{margin:13px 0}.section-heading h2{font-size:19px}.section-heading p{font-size:11px}.section-heading .text-link{font-size:10px}.challenge-grid{grid-template-columns:1fr}.article{padding:20px}.article pre{padding:16px}.lesson-row{padding:16px;gap:11px}.lesson-row .pill{font-size:8px}.lesson-row h3{font-size:12px}.page-heading h1{font-size:28px}.chat-messages{padding:16px}.preview-toolbar{flex-wrap:wrap}.editor-toolbar{flex-wrap:wrap}.editor-toolbar select{max-width:140px}.toolbar-actions{gap:4px}.toolbar-actions .secondary{padding:8px}footer span{display:none}}