@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/font-0.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(fonts/font-1.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(fonts/font-2.ttf) format('truetype');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(fonts/font-3.ttf) format('truetype');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/font-4.ttf) format('truetype');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(fonts/font-5.ttf) format('truetype');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(fonts/font-6.ttf) format('truetype');
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(fonts/font-7.ttf) format('truetype');
}
:root{--paper:#f5f5f0;--ink:#20251d;--muted:#72766d;--line:#dedfd5;--lime:#c5f277;--lavender:#e5dcf9;--peach:#f7d9c5;--blue:#d7e9f5;--dark:#161a14;--radius:20px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans',sans-serif;font-size:15px;-webkit-tap-highlight-color:transparent}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button,a{color:inherit}a{text-decoration:none}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #6e9635;outline-offset:4px}button{border:0;background:none}svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}h1,h2,h3,p{margin:0}h1,h2,h3,.display,.brand{font-family:'Space Grotesk',sans-serif}h1{font-size:38px;line-height:1.15;letter-spacing:-1.7px;font-weight:600}h2{font-size:24px;letter-spacing:-.8px;font-weight:600}h3{font-size:18px;font-weight:600;letter-spacing:-.4px}p{line-height:1.65}.muted{color:var(--muted)}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:700;text-transform:uppercase}.skip{position:fixed;top:-80px;left:12px;z-index:100;background:var(--lime);padding:14px}.skip:focus{top:10px}.sidebar{position:fixed;inset:0 auto 0 0;width:228px;background:var(--dark);color:#fafbf5;display:flex;flex-direction:column;padding:37px 24px 24px;z-index:20}.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:27px;letter-spacing:-1.5px}.brand-mark{display:grid;place-items:center;width:35px;height:35px;background:var(--lime);color:var(--dark);border-radius:10px}.brand-mark svg{width:24px;height:24px}.brand small{color:var(--lime);font-size:12px;align-self:start;margin-top:3px}.tagline{font-size:11px;color:#9fa695;margin:10px 0 47px;letter-spacing:.4px}.nav-label{color:#808974;font-size:9px;letter-spacing:1.8px;margin:0 12px 14px}.nav{display:grid;gap:9px}.nav a{display:flex;align-items:center;gap:12px;padding:14px 15px;border-radius:11px;font-weight:500;font-size:14px;color:#aeb4a6;min-height:48px}.nav a:hover{background:#262d21;color:white}.nav a.active{background:var(--lime);color:var(--dark)}.nav a svg{width:20px;height:20px}.sidebar-bottom{margin-top:auto}.side-card{border:1px solid #3c4434;border-radius:15px;padding:17px;margin-top:35px}.side-card p{font-size:12px;color:#b1b7a9;margin-top:8px}.side-card .eyebrow{color:var(--lime)}.side-foot{display:flex;align-items:center;gap:8px;color:#828b78;font-size:10px;margin-top:22px}.dot{display:inline-block;width:6px;height:6px;background:var(--lime);border-radius:50%}.shell{margin-left:228px}.topbar{height:83px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 45px}.breadcrumb{color:var(--muted);font-size:12px;display:flex;gap:12px;align-items:center}.breadcrumb b{font-weight:500;color:var(--ink)}.stats{display:flex;align-items:center;gap:22px;font-size:12px;font-weight:650}.stat{display:flex;gap:6px;align-items:center}.stat svg{width:17px;height:17px}.stat:first-child svg{color:#b36b34}.avatar{width:34px;height:34px;border:1px solid #c7cbbd;border-radius:50%;display:grid;place-items:center;background:#e5e9dc;font-family:'Space Grotesk';font-size:11px}.mobile-brand{display:none}.content{max-width:1320px;margin:auto;padding:37px 45px 32px}.page-heading{display:flex;align-items:end;justify-content:space-between;gap:15px;margin-bottom:26px}.page-heading .eyebrow{color:var(--muted);margin-bottom:12px}.page-heading p{color:var(--muted);font-size:13px;margin-top:9px}.date-pill{border:1px solid var(--line);padding:9px 12px;border-radius:30px;font-size:10px;white-space:nowrap;display:flex;gap:7px;align-items:center}.date-pill .dot{background:#638745}.dashboard{display:grid;grid-template-columns:minmax(0,1fr) 283px;gap:25px}.hero{position:relative;min-height:300px;overflow:hidden;background:var(--lime);border-radius:var(--radius);padding:30px 30px 28px}.hero-text{position:relative;z-index:2;max-width:65%}.hero .eyebrow{display:flex;align-items:center;gap:7px;font-size:9px}.hero .eyebrow span{width:6px;height:6px;border-radius:50%;background:var(--ink)}.hero h2{font-size:42px;line-height:1.05;letter-spacing:-2px;margin:24px 0 15px;font-weight:600}.hero p{font-size:12px;max-width:265px;line-height:1.6}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:12px 20px;border-radius:9px;font-size:12px;font-weight:650;transition:transform .15s,background .15s}.primary{background:var(--ink);color:#fff}.primary:hover{background:#37412b;transform:translateY(-1px)}.primary.lime{background:var(--lime);color:var(--ink)}.secondary{border:1px solid var(--line);background:transparent;color:var(--ink)}.secondary:hover{background:#e9ece0}.primary svg,.secondary svg{width:17px;height:17px}.hero .primary{margin-top:23px}.hero-meta{font-size:9px;opacity:.7;margin-left:10px}.neural-art{position:absolute;right:-26px;bottom:7px;width:300px;height:290px;transform:rotate(-12deg);pointer-events:none}.neural-art svg{width:100%;height:100%;stroke:none}.hero-sticker{position:absolute;right:23px;top:25px;border:1px solid #6f953f;border-radius:30px;padding:7px 11px;font-size:9px;font-weight:700;transform:rotate(8deg)}.section-heading{display:flex;align-items:center;justify-content:space-between;margin:30px 0 16px;gap:12px}.section-heading h2{font-size:20px}.text-link{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:#65784e;min-height:36px;font-weight:600}.text-link svg{width:14px;height:14px}.course-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.course-card{border:1px solid var(--line);background:#fafaf7;border-radius:15px;padding:20px;transition:transform .2s,border-color .2s;position:relative;display:block}.course-card:hover{border-color:#99ab7c;transform:translateY(-3px)}.course-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:21px}.icon-tile{width:42px;height:42px;border-radius:12px;display:grid;place-items:center}.lime-bg{background:var(--lime)}.lavender-bg{background:var(--lavender)}.peach-bg{background:var(--peach)}.blue-bg{background:var(--blue)}.course-number{font-family:'Space Grotesk';font-size:11px;color:#8a8e81}.course-card .eyebrow{font-size:8px;letter-spacing:1.4px;color:#7b8071;margin-bottom:8px}.course-card h3{font-size:16px}.course-card p{font-size:11px;color:var(--muted);margin:7px 0 16px}.course-bottom{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#767d6e}.course-bottom svg{width:17px;height:17px;color:var(--ink)}.track{height:4px;background:#e7e9df;border-radius:10px;overflow:hidden}.track span{height:100%;display:block;background:#71904a;border-radius:10px;transition:width .3s}.course-card .track{margin-top:12px}.aside-stack{display:flex;flex-direction:column;gap:17px}.panel{background:#fafaf7;border:1px solid var(--line);border-radius:17px;padding:22px}.panel-head{display:flex;align-items:center;justify-content:space-between}.panel-head h3{font-size:15px}.tiny-label{font-size:8px;font-weight:700;letter-spacing:1px;padding:5px 7px;border:1px solid var(--line);border-radius:5px}.rank-ring{width:145px;height:145px;margin:23px auto 18px;border-radius:50%;background:conic-gradient(#a7cf6b var(--progress),#e8ebdf 0);padding:9px;transform:rotate(-30deg)}.rank-ring-inner{width:100%;height:100%;background:#fafaf7;border-radius:50%;display:flex;flex-direction:column;justify-content:center;align-items:center;transform:rotate(30deg)}.rank-ring .rank-symbol{width:49px;height:49px;border:1px solid #d7ddca;background:#edf2e4;display:grid;place-items:center;border-radius:15px;transform:rotate(-8deg);margin-bottom:8px}.rank-symbol svg{width:27px;height:27px;transform:rotate(8deg)}.rank-ring strong{font-family:'Space Grotesk';font-size:21px}.rank-ring small{font-size:8px;color:var(--muted);margin-top:2px}.rank-name{text-align:center;font-size:15px;font-family:'Space Grotesk';font-weight:600}.rank-sub{text-align:center;font-size:10px;color:var(--muted);margin-top:6px}.rank-summary{border-top:1px solid var(--line);margin-top:19px;padding-top:16px;display:flex;justify-content:space-between;align-items:center;font-size:10px}.rank-summary b{font-weight:500}.lab-teaser{background:var(--lavender);border:0;position:relative;overflow:hidden;min-height:191px}.lab-teaser h3{font-size:22px;margin:11px 0 9px;max-width:165px;line-height:1.12}.lab-teaser p{font-size:11px;max-width:165px;color:#61566d}.lab-teaser .text-link{color:var(--ink);margin-top:9px}.mini-chip{position:absolute;right:-11px;bottom:28px;transform:rotate(-15deg);width:70px;height:70px;border:7px double #8e7daa;border-radius:12px;display:grid;place-items:center;font-family:'Space Grotesk';font-size:14px;color:#7a6996;background:#ddd1ef}.quote{padding:20px 5px}.quote .eyebrow{font-size:9px;color:#8b907f}.quote p{font-size:13px;margin-top:12px;line-height:1.7}.quote strong{background:#e7efd9;font-weight:500}.footer{border-top:1px solid var(--line);margin-top:31px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;font-size:10px;color:#898e80}.footer a{text-decoration:underline;text-underline-offset:3px}.bottom-nav{display:none}.back{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--muted);min-height:44px;margin-bottom:15px}.back svg{width:16px;height:16px}.chapter-banner{border-radius:20px;padding:29px;margin-bottom:23px}.chapter-banner .icon-tile{background:#ffffff70;margin-bottom:18px}.chapter-banner h1{margin:12px 0}.chapter-banner p{font-size:14px;max-width:540px}.lesson-list{display:grid;gap:12px}.lesson-row{display:flex;align-items:center;gap:18px;padding:20px;border:1px solid var(--line);border-radius:14px;background:#fafaf7;transition:background .2s}.lesson-row:hover{background:#ebefdf}.lesson-index{font-family:'Space Grotesk';font-size:19px;display:grid;place-items:center;background:#ecefe4;width:47px;height:47px;border-radius:50%;flex-shrink:0}.lesson-index.done{background:var(--lime)}.lesson-row h3{font-size:16px}.lesson-row p{font-size:12px;color:var(--muted);margin-top:4px}.lesson-row>svg{margin-left:auto}.lesson-duration{margin-left:auto;font-size:10px;color:var(--muted);white-space:nowrap}.reading{max-width:720px;margin:0 auto}.lesson-top{display:flex;justify-content:space-between;align-items:center;gap:10px}.lesson-top .back{margin:0}.lesson-top .eyebrow{font-size:9px;color:var(--muted)}.step-track{display:flex;gap:5px;margin:17px 0 35px}.step-track span{height:5px;flex:1;background:#dfe3d5;border-radius:5px}.step-track span.on{background:#86ab50}.lesson-card{background:#fffefa;border:1px solid var(--line);border-radius:23px;padding:35px}.lesson-card .eyebrow{color:#7b8e5e;margin-bottom:17px}.lesson-card h1{font-size:33px;margin-bottom:17px}.lesson-card .lead{font-size:16px;color:var(--muted);margin-bottom:27px}.lesson-body{font-size:17px;line-height:1.85}.analogy{font-size:36px;margin-bottom:20px}.takeaway{background:#edf4df;border-left:3px solid #91b854;padding:21px;border-radius:0 12px 12px 0;margin:20px 0;line-height:1.75;font-size:17px}.lesson-actions{display:flex;justify-content:space-between;gap:12px;margin-top:26px}.lesson-actions .primary{min-width:170px}.source{font-size:11px;color:var(--muted);line-height:1.6;margin-top:23px}.source a{text-decoration:underline;text-underline-offset:3px}.answers{display:grid;gap:11px;margin-top:25px}.answer{border:1px solid var(--line);background:#fffefa;border-radius:12px;padding:16px;display:flex;align-items:center;gap:12px;min-height:62px;text-align:left;font-size:14px;line-height:1.5}.answer:hover:not(:disabled){background:#f0f4e7;border-color:#9cb77b}.answer:disabled{opacity:1}.answer-letter{width:28px;height:28px;border-radius:7px;background:#edf0e6;display:grid;place-items:center;flex-shrink:0;font-family:'Space Grotesk';font-size:12px}.answer.correct{background:#e9f5d7;border-color:#8cb854}.answer.wrong{background:#fff0e8;border-color:#d69a79}.feedback{margin-top:20px;padding:19px;border-radius:12px;background:#e9f5d7;font-size:14px;line-height:1.7}.feedback.wrong{background:#fff0e8}.feedback strong{display:block;margin-bottom:4px}.completion{text-align:center;padding:28px 0}.completion .big-icon{width:100px;height:100px;border-radius:30px;background:var(--lime);display:grid;place-items:center;margin:0 auto 27px;transform:rotate(-6deg)}.big-icon svg{width:50px;height:50px;transform:rotate(6deg)}.completion h1{margin-bottom:16px}.completion p{color:var(--muted);margin:0 auto 24px;max-width:400px}.xp-award{display:inline-flex;padding:9px 15px;background:#e9f1dc;border-radius:25px;color:#5f7a3d;font-family:'Space Grotesk';font-weight:600;margin-bottom:20px}.completion .primary,.completion .secondary{margin:5px}.lab-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.lab-card{padding:26px;border-radius:18px;border:1px solid var(--line);background:#fafaf7;display:flex;flex-direction:column;align-items:start}.lab-card .icon-tile{margin-bottom:20px}.lab-card h2{font-size:22px;margin-bottom:10px}.lab-card p{font-size:13px;color:var(--muted);margin-bottom:20px}.lab-card .text-link{margin-top:auto}.lab-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:26px}.lab-controls,.lab-output{border:1px solid var(--line);border-radius:18px;padding:26px;background:#fafaf7}.lab-output{background:var(--dark);color:white}.field{display:block;margin-bottom:24px}.field:last-child{margin-bottom:0}.field-head{display:flex;justify-content:space-between;gap:10px;font-size:12px;margin-bottom:11px}.field-head output{font-family:'Space Grotesk';font-weight:600;color:#638344}.field input[type=range]{width:100%;accent-color:#729547;min-height:28px}.field input[type=text],.search-input,select{width:100%;background:#fffefa;border:1px solid #cdd3c0;border-radius:10px;padding:13px;color:var(--ink);font-size:16px;min-height:48px}textarea{width:100%;min-height:110px;font:inherit;padding:15px;border:1px solid #cdd3c0;border-radius:10px;resize:vertical;background:#fffefa;color:var(--ink);font-size:16px}.lab-note{font-size:12px;line-height:1.7;color:var(--muted);margin-top:19px}.metric{font-family:'Space Grotesk';font-size:57px;letter-spacing:-3px;line-height:1.2;margin:21px 0 8px;color:var(--lime)}.metric small{font-size:20px;letter-spacing:-.5px}.lab-output .muted{color:#aeb9a2}.metric-row{display:flex;justify-content:space-between;font-size:12px;margin:16px 0;gap:10px}.lab-output .track{height:12px;background:#3c4433;margin:18px 0}.lab-output .track span{background:var(--lime)}.lab-output .eyebrow{color:#b4c29f}.token-output{display:flex;flex-wrap:wrap;gap:6px;margin-top:24px;min-height:70px;align-content:start}.token{padding:9px 11px;background:var(--lime);color:var(--ink);font-family:monospace;font-size:14px;border-radius:6px;white-space:pre-wrap;overflow-wrap:anywhere;max-width:100%}.token:nth-child(3n+2){background:var(--lavender)}.token:nth-child(3n+3){background:var(--peach)}.prob-row{display:grid;grid-template-columns:60px 1fr 42px;gap:10px;align-items:center;font-size:12px;margin:15px 0}.prob-bar{height:13px;border-radius:3px;background:#3b4433;overflow:hidden}.prob-bar span{height:100%;display:block;background:var(--lime);transition:width .2s}.sampling-result{margin:20px 0;padding:18px;border:1px solid #4a573d;border-radius:10px;font-family:'Space Grotesk';font-size:20px}.segmented{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}.segmented button{min-height:43px;padding:10px 17px;background:#e8ecdf;border-radius:8px;font-size:13px}.segmented button.active{background:var(--lime)}.gpu{border:1px solid #536044;border-radius:12px;padding:15px;margin:14px 0}.gpu-label{font-size:10px;color:#b8c4a9;margin-bottom:12px}.gpu-blocks{display:flex;gap:6px}.gpu-blocks span{background:var(--lime);color:var(--ink);border-radius:5px;padding:10px 5px;flex:1;text-align:center;font-family:'Space Grotesk';font-size:11px}.gpu:nth-child(even) .gpu-blocks span{background:var(--lavender)}.search-box{position:relative;margin:25px 0 14px}.search-box svg{position:absolute;left:16px;top:14px;color:var(--muted);width:20px}.search-input{padding-left:47px}.search-count{font-size:11px;color:var(--muted);margin-bottom:20px}.glossary-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.term{border:1px solid var(--line);border-radius:12px;background:#fafaf7;padding:19px}.term summary{cursor:pointer;min-height:26px;font-family:'Space Grotesk';font-weight:500;font-size:16px}.term p{font-size:13px;color:#666f5b;margin-top:14px}.term .text-link{margin-top:8px}.empty{padding:35px;text-align:center;color:var(--muted);grid-column:1/-1}.challenge-hero{background:var(--dark);color:white;padding:40px;border-radius:22px;position:relative;overflow:hidden}.challenge-hero h1{font-size:45px;margin:18px 0;max-width:500px}.challenge-hero p{color:#aeb8a4;max-width:500px;font-size:14px;margin-bottom:25px}.challenge-hero .eyebrow{color:var(--lime)}.challenge-facts{display:flex;gap:30px;margin:30px 0}.challenge-facts strong{font-family:'Space Grotesk';font-size:26px;color:var(--lime);display:block}.challenge-facts span{font-size:11px;color:#aeb8a4}.badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin:24px 0}.badge{border:1px solid var(--line);border-radius:15px;padding:21px 12px;text-align:center;opacity:.55}.badge.earned{opacity:1;background:#eef4e3;border-color:#b6cb95}.badge svg{width:32px;height:32px;margin-bottom:12px}.badge h3{font-size:13px;margin-bottom:7px}.badge p{font-size:10px;color:var(--muted)}.profile-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:25px 0}.profile-summary .panel strong{font-family:'Space Grotesk';font-size:33px;display:block;margin-bottom:5px}.profile-summary .panel span{font-size:12px;color:var(--muted)}.data-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.fine-print{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.7}.source-list{display:grid;gap:10px;margin-top:23px}.source-list a{display:flex;justify-content:space-between;padding:15px;border:1px solid var(--line);border-radius:10px;font-size:13px;background:#fafaf7}.source-list svg{width:16px}#toast{position:fixed;bottom:25px;left:calc(50% + 100px);transform:translateX(-50%);padding:14px 22px;background:#28321f;color:white;font-size:13px;border-radius:12px;box-shadow:0 6px 25px #0002;z-index:100;max-width:90vw;display:none}#toast.show{display:block}.confetti{position:fixed;inset:0;pointer-events:none;z-index:80;overflow:hidden}.confetti i{position:absolute;top:-20px;width:9px;height:17px;background:var(--lime);animation:fall 1.7s ease-in forwards}.confetti i:nth-child(2n){background:#a18ac5}.confetti i:nth-child(3n){background:#efa472}@keyframes fall{to{transform:translateY(110vh) rotate(560deg)}}@media(min-width:1500px){.content{padding-top:45px}.hero{min-height:326px}.hero h2{font-size:49px}.neural-art{right:0;width:330px;height:310px}.course-card{padding:23px}.course-card h3{font-size:18px}.dashboard{grid-template-columns:minmax(0,1fr) 300px;gap:28px}}
@media(max-width:1190px){.sidebar{width:200px;padding:30px 18px}.shell{margin-left:200px}.topbar{padding:0 28px}.content{padding:28px}.dashboard{grid-template-columns:minmax(0,1fr) 245px;gap:18px}.hero{padding:25px}.hero h2{font-size:35px}.neural-art{right:-55px;width:260px}.hero-text{max-width:75%}.hero p{max-width:230px}.hero-meta{display:none}.course-card{padding:16px}.course-card h3{font-size:15px}.panel{padding:19px}.page-heading h1{font-size:32px}.date-pill{display:none}}
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