@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');
.scene .network{gap:6px}.scene .network .rack{height:68px;overflow:hidden}.scene .network .wire{height:10px;flex-shrink:0}.scene .network .flow{line-height:1}
:root{--paper:#faf7ef;--ink:#293c34;--muted:#6e7970;--green:#32694b;--lime:#dcecae;--orange:#ee9d61;--line:#e5e5d9;--white:#fffefa;--pink:#f3d9dc}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 'DM Sans',sans-serif}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #ad652e;outline-offset:4px}button:disabled{cursor:default;opacity:.4}a{color:var(--green)}.topbar{max-width:1240px;margin:auto;padding:24px 36px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:14px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-family:Outfit,sans-serif;font-size:23px;font-weight:600}.brand-mark{display:inline-flex;align-items:center;justify-content:center;background:var(--green);color:var(--lime);width:42px;height:42px;border-radius:14px;transform:rotate(-7deg);font-size:27px;letter-spacing:-3px;padding-right:4px}.brand-mark span{color:var(--orange)}.tagline,.eyebrow,.small-label{font-size:11px;font-weight:700;letter-spacing:1.7px}.tagline{color:var(--muted)}.quiet{border:0;background:transparent;color:var(--muted);padding:9px 8px;font-size:13px}.intro{text-align:center;padding:47px 20px 38px}.eyebrow{color:var(--green)}h1,h2,h3{font-family:Outfit,sans-serif;line-height:1.17}h1{font-size:clamp(33px,4.6vw,53px);font-weight:600;letter-spacing:-1.8px;margin:14px 0 17px}h1 span{color:var(--green)}.intro p{font-size:14px;color:var(--muted);margin:0}.workspace{display:grid;grid-template-columns:255px minmax(0,1fr);gap:34px;max-width:1080px;margin:auto;padding:0 22px}.map{align-self:start;padding-top:13px}.map-title{font-size:13px;font-weight:600;display:flex;justify-content:space-between;gap:10px;margin-bottom:18px}.map-title span{color:var(--muted);font-size:11px}#lesson-nav{display:flex;flex-direction:column;gap:3px}.stone{display:flex;align-items:center;gap:12px;text-align:left;width:100%;padding:8px 10px;background:transparent;border:1px solid transparent;border-radius:13px;color:var(--muted);font-size:13px}.stone .letter{width:30px;height:30px;border-radius:10px;background:#eeeee4;display:grid;place-items:center;color:#7d8675;font:500 15px Outfit,sans-serif;flex-shrink:0}.stone.active{background:#e9eddc;border-color:#dce3cc;color:var(--ink);font-weight:600}.stone.active .letter{background:var(--green);color:var(--white)}.stone.complete:not(.active) .letter{background:var(--lime);color:var(--green)}.stone .check{margin-left:auto;font-size:11px}.map-foot{margin:25px 10px;font-size:11px;color:var(--muted)}.tiny-flowers{font-size:28px;letter-spacing:8px;color:#a8b992;margin-top:12px}.lesson{background:var(--white);border:1px solid var(--line);border-radius:24px;padding:29px 34px 25px;box-shadow:0 5px 0 #eeeee3}.lesson-top{display:flex;justify-content:space-between;align-items:center;gap:15px}#readtime{font-size:10px;letter-spacing:1.1px;color:var(--muted)}h2{font-size:34px;letter-spacing:-.9px;margin:15px 0 10px}.lead{font-size:15px;color:var(--muted);margin:0 0 24px;max-width:560px}.picture{background:#f0f2e6;border-radius:18px;overflow:hidden;position:relative;background-image:radial-gradient(#d5dbc8 .8px,transparent .8px);background-size:18px 18px}.scene{height:252px;position:relative;display:flex;align-items:center;justify-content:center;padding:24px;gap:18px}.picture-footer{display:flex;align-items:center;gap:8px;padding:10px 16px;background:#e8ecdc;font-size:11px;min-height:44px}.dot{width:6px;height:6px;border-radius:50%;background:var(--green);flex-shrink:0}.replay{margin-left:auto;white-space:nowrap;background:transparent;border:0;font-size:11px;color:var(--green);padding:4px}.step-controls{display:flex;justify-content:center;gap:18px;align-items:center;margin:14px 0 22px}.circle{width:31px;height:31px;border:1px solid var(--line);border-radius:50%;background:var(--white);color:var(--ink)}#step-dots{display:flex;gap:8px}#step-dots button{padding:0;border:0;width:9px;height:9px;background:#dedfd5;border-radius:50%}#step-dots button[aria-current=true]{background:var(--green);width:24px;border-radius:8px}.small-label{color:var(--muted);font-size:10px}h3{font-size:23px;font-weight:500;margin:8px 0}.explanation p,.real-world p{font-size:14px;margin:9px 0;color:#57655a}.explanation{min-height:134px}.real-world{display:flex;gap:16px;padding:15px 18px;background:#f7f5ed;border-radius:12px;margin:12px 0 25px}.book-icon{font-size:27px;color:#b18d4d}.real-world p{margin:3px 0 0;font-size:13px}.quiz{border-top:1px dashed #dcded0;padding-top:23px}.quiz h3{font-size:19px;margin:10px 0 14px}#answers{display:grid;grid-template-columns:1fr 1fr;gap:10px}#answers button{border:1px solid #dddfd3;background:var(--white);border-radius:12px;text-align:left;padding:12px 14px;color:var(--ink);font-size:13px}#answers button:hover{background:#f4f5ec}#answers button.correct{background:#e5efd3;border-color:#72985c}#answers button.incorrect{background:#f9e9dc;border-color:#d59b6c}#feedback{font-size:13px;margin:9px 0 0;min-height:22px;color:var(--green)}.lesson-bottom{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:20px;margin-top:13px}.primary{border:0;border-radius:12px;padding:12px 19px;background:var(--green);color:var(--white);font-size:13px;font-weight:600}.sources{max-width:744px;margin:30px auto 0;padding:0 22px}.sources>button{border:0;background:transparent;text-align:left;width:100%;font-size:12px;color:var(--muted);padding:13px 0}.sources>button span{float:right}#source-content{font-size:12px}#source-content li{margin-bottom:8px}footer{text-align:center;color:var(--muted);font-size:11px;padding:35px 20px}.character{width:92px;height:105px;background:var(--orange);border:2px solid #c17d4b;border-radius:36px 36px 23px 23px;position:relative;box-shadow:0 7px 0 #dce2cf;display:grid;place-items:center;flex-shrink:0;animation:bob 3s ease-in-out infinite}.face{font-size:29px;letter-spacing:7px;transform:translateX(3px);font-family:monospace;color:#5d442e}.character::after{content:'';position:absolute;width:16px;height:7px;border:2px solid #5d442e;border-top:0;border-radius:0 0 10px 10px;left:35px;top:58px}.scene-label{position:absolute;bottom:-34px;left:-30px;right:-30px;text-align:center;font-size:12px;font-weight:600;white-space:nowrap}.bubble{position:absolute;background:var(--white);border:1px solid #dddccb;border-radius:14px;padding:8px 14px;font-size:12px;top:15px;left:25px;box-shadow:0 3px 0 #e4e7d7}.machine{border:2px solid var(--green);background:#dce8c4;border-radius:20px;position:relative;min-width:117px;padding:16px;box-shadow:0 7px 0 #dce2cf;text-align:center;transition:transform .4s}.machine .face{color:var(--green);font-size:26px}.machine .machine-name{font:600 15px Outfit,sans-serif;display:block;margin-top:5px}.machine small{font-size:10px}.flow{font-size:27px;color:#6b8c60;animation:move 1.6s ease-in-out infinite}.token-row{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.token{background:var(--white);border:1px solid #cbd6bb;border-radius:9px;padding:10px 13px;font-size:14px;box-shadow:0 4px 0 #dce2cf;animation:arrive .5s both}.token:nth-child(2){animation-delay:.15s}.token:nth-child(3){animation-delay:.3s}.token:nth-child(4){animation-delay:.45s}.tile-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}.gpu{width:42px;height:39px;border:1px solid var(--green);background:#d2e5b7;border-radius:7px;display:grid;place-items:center;font-size:10px;color:var(--green);position:relative}.gpu.lit{animation:compute 1.8s ease-in-out infinite}.gpu:nth-child(2n){animation-delay:.3s}.gpu:nth-child(3n){animation-delay:.6s}.server{background:#e4e7d7;border:2px solid #8f9b81;border-radius:13px;padding:14px;position:relative}.server-title{font-size:11px;margin:0 0 8px}.stack{display:flex;flex-direction:column;gap:6px;align-items:center}.rack{width:83px;border:2px solid #607650;border-radius:8px;padding:7px;background:#dce3ce;position:relative}.rack-row{height:11px;border-radius:2px;background:#8ca578;margin:4px 0;display:flex;justify-content:space-around}.rack-row::after{content:'· · · ·';font-size:10px;color:#f5f8e7;line-height:9px}.rack-row.switch{background:#d5a465}.network{display:flex;flex-direction:column;align-items:center;width:100%;gap:12px}.network-tier{display:flex;gap:22px;align-items:center;justify-content:center;width:100%}.net-node{background:var(--white);border:1px solid #a9b99a;border-radius:8px;padding:8px 15px;font-size:12px}.wire{height:16px;border-left:2px dashed #8aa277}.net-node.spine{background:#f3dbb5;border-color:#ceaa73}.many-people{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.person{width:16px;height:23px;border-radius:9px 9px 4px 4px;background:#d99565;position:relative;animation:bob 2s ease-in-out infinite}.person:nth-child(2n){background:#8ca577;animation-delay:.4s}.person:nth-child(3n){background:#b1a3ba;animation-delay:.8s}.mini-caption{font-size:11px;text-align:center;margin-top:9px}.scene-column{display:flex;flex-direction:column;align-items:center;gap:12px}.big-number{font:600 43px Outfit,sans-serif;color:var(--green);letter-spacing:-1px}.pill{background:#fffefa;border:1px solid #d4dbc5;border-radius:20px;padding:6px 12px;font-size:12px}.batch{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;background:#e0e8d0;border:2px dashed #9caf87;padding:12px;border-radius:12px}.batch .token{font-size:11px;padding:7px}.memory{width:155px;display:grid;grid-template-columns:repeat(5,1fr);gap:4px;border:2px solid #9aad84;padding:9px;border-radius:10px}.memory span{height:22px;background:#d7dfca;border-radius:3px}.memory span.used{background:#8ca871}.memory span.cache{background:#e6ae7d}.scene.enter{animation:arrive .45s ease-out}.lab{border:1px solid #d9e2ca;background:#f5f8ed;border-radius:16px;padding:20px;margin:25px 0}.lab h3{margin-top:0}.lab-note{font-size:12px;color:var(--muted)}.fields{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}.field{display:flex;flex-direction:column;gap:5px;font-size:12px;color:#526449}.field input,.field select{min-width:0;width:100%;border:1px solid #cdd7c1;border-radius:8px;padding:9px 10px;background:var(--white);color:var(--ink)}.field small{font-size:10px;color:var(--muted)}.results{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:17px}.result{background:var(--white);border:1px solid var(--line);padding:12px;border-radius:10px}.result strong{display:block;font:600 26px Outfit,sans-serif;color:var(--green)}.result span{font-size:11px;color:var(--muted)}.math{white-space:normal;font-size:12px;background:#e8efd9;border-radius:8px;padding:12px;line-height:1.8;margin-top:13px}.error{color:#9b3f28;font-size:12px}.gpu-table{border-collapse:collapse;width:100%;font-size:12px;margin:18px 0}.gpu-table th,.gpu-table td{text-align:left;padding:10px 5px;border-bottom:1px solid #dce2d2}.gpu-table th{font-size:10px;color:var(--muted)}.legend{display:flex;gap:12px;justify-content:center;font-size:10px}.legend i{display:inline-block;width:8px;height:8px;background:#8ca871;margin-right:4px}.legend i.orange{background:#e6ae7d}body.motion-paused *,body.motion-paused *::before,body.motion-paused *::after{animation-play-state:paused!important;transition:none!important}@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}@keyframes move{0%,100%{transform:translateX(-3px);opacity:.5}50%{transform:translateX(3px);opacity:1}}@keyframes arrive{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes compute{0%,100%{background:#d2e5b7}50%{background:#98bd70}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}@media(min-width:1000px){.sources{margin-left:calc(50% - 240px)}}@media(max-width:760px){.topbar{padding:18px 20px}.tagline{display:none}.brand{font-size:20px}.intro{padding-top:30px}.workspace{grid-template-columns:1fr;gap:16px;padding:0 15px}.map{padding:0}.map-title{margin:0 3px 9px}#lesson-nav{display:grid;grid-template-columns:repeat(8,1fr);gap:5px}.stone{padding:4px;justify-content:center}.stone .stone-name,.stone .check,.map-foot{display:none}.stone .letter{width:28px;height:28px}.lesson{padding:24px 22px}.sources{margin-top:20px}.scene{gap:12px;padding:20px;height:240px}.lesson-top{gap:5px}.intro p{max-width:320px;margin:auto}}@media(max-width:400px){.lesson{padding:20px 16px}h2{font-size:29px}.scene{padding:14px;gap:9px}.character{width:68px;height:86px}.character::after{left:24px;top:48px}.machine{min-width:90px;padding:12px}.flow{font-size:20px}.gpu{width:33px;height:32px}.server{padding:10px}.network-tier{gap:9px}.net-node{padding:7px 9px}.fields{grid-template-columns:1fr}#answers{grid-template-columns:1fr}.primary{padding:10px 12px}.big-number{font-size:34px}#readtime{display:none}.topbar{padding:15px}.quiet{font-size:11px}}