*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:#f7f6f0;color:#20382f;font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}a{color:inherit;text-decoration:none}button,a,input,summary{touch-action:manipulation}:focus-visible{outline:3px solid #839b35;outline-offset:5px}.shell{width:min(1220px,calc(100% - 96px));margin:auto}header{height:110px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:-.6px}.brand span{font-weight:400;margin-left:-5px}nav{display:flex;align-items:center;gap:32px;font-size:13px}nav a:hover{text-decoration:underline}.login-link{border:1px solid #ced3c8;border-radius:30px;padding:13px 19px;background:none;color:inherit;cursor:pointer}.login-link span{margin-left:14px}.hero{display:grid;grid-template-columns:1fr 1fr;gap:55px;min-height:660px;align-items:center;padding:45px 0 85px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;display:flex;align-items:center;gap:9px}.eyebrow>span{width:7px;height:7px;border-radius:50%;background:#99a74c}h1{font-size:clamp(60px,6.3vw,88px);line-height:1.01;letter-spacing:-5px;font-weight:500;margin:25px 0}h1 em{font-family:Georgia,serif;font-weight:400;color:#5f7654;letter-spacing:-4px}.intro{max-width:375px;font-size:16px;line-height:1.75;color:#657067}.button{display:inline-flex;justify-content:space-between;align-items:center;gap:35px;padding:19px 23px;background:#dce9a5;border:0;border-radius:4px;color:#243f31;font-size:13px;font-weight:600;cursor:pointer;margin-top:18px}.button:hover{filter:brightness(.96)}.button span{font-size:19px}.fine{font-size:11px;color:#7a8277;margin-top:17px}.code-scene{position:relative;padding:60px 0 95px}.code-scene:before{content:"";position:absolute;background:#e6e9db;width:110%;height:110%;border-radius:48% 43% 47% 42%;top:-10px;left:-7%;transform:rotate(-10deg);z-index:-1}.orbit-label{font-size:10px;letter-spacing:2px;transform:rotate(-5deg);margin:0 0 18px 15px;color:#687c62}.code-window{border-radius:12px;background:#243c33;color:#e1e9da;box-shadow:0 25px 55px #263a2b22;transform:rotate(-3deg);overflow:hidden}.window-top{display:flex;justify-content:space-between;align-items:center;padding:17px 20px;background:#30483f;font:10px monospace;color:#aebcaf}.dots{color:#94a684;letter-spacing:3px;font-size:9px}.code-body{font:12px/2.3 monospace;padding:20px 15px;white-space:pre;overflow-x:auto}.code-body i{color:#8ca293;font-style:normal;margin-right:19px}.code-body b{color:#eab58f;font-weight:400}.comment{color:#91ab97}.fn{color:#d2dda7}.code-body q{quotes:none;color:#c4d69a}.terminal{background:#1d322a;padding:19px 25px;display:flex;flex-direction:column;gap:11px;font:11px monospace}.terminal>span:first-child{font-size:9px;color:#93a697;letter-spacing:1.5px}.success{color:#c3d28c;font-size:10px}.note{position:absolute;right:-10px;bottom:30px;transform:rotate(5deg);background:#e0e8b6;padding:17px 25px;display:flex;align-items:center;gap:18px;box-shadow:0 9px 20px #3c442814}.note>span{font-size:36px}.note p{font-size:13px;line-height:1.5;margin:0}.scene-caption{position:absolute;bottom:0;font-size:9px;letter-spacing:2px;color:#75816b;left:10px}.approach{background:#edf0e4;padding:55px 0}.approach-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}h2{font-size:35px;line-height:1.2;letter-spacing:-1.2px;font-weight:500;margin:18px 0}.approach-grid>p{font-size:15px;line-height:1.9;color:#65705e;max-width:455px}.practice{padding:80px 0}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:30px}.small-label{font-size:9px;letter-spacing:1.5px;color:#7c8775;margin-bottom:20px}.lessons{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.lessons article{border:1px solid #d9ddd1;padding:25px;border-radius:5px}.lesson-top{display:flex;justify-content:space-between;align-items:center;font-size:9px;letter-spacing:1px;color:#6e7a66}.symbol{font:30px Georgia,serif;color:#70876a}.lessons h3{font-size:21px;font-weight:500;letter-spacing:-.5px;margin:30px 0 14px}.lessons p{font-size:13px;color:#70786a;line-height:1.9;min-height:75px}.lessons summary{font-size:12px;border-top:1px solid #dce0d5;padding-top:20px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:5px}.exercise{font-size:12px;line-height:1.7;padding-top:20px;color:#5c6c56}.exercise pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#eaf0df;border-radius:4px;padding:12px;font-size:10px}.closing{border-top:1px solid #d7ddd0;border-bottom:1px solid #d7ddd0;padding:45px 0;display:flex;align-items:center;gap:26px}.closing h2{font-size:28px}.closing p:last-child{color:#7a8273;font-size:13px}.closing-mark{font:60px Georgia,serif;color:#8da273}.closing .button{margin:0 0 0 auto}.dark{background:#284b3e;color:#f4f5e9}footer{display:flex;justify-content:space-between;gap:20px;font-size:10px;color:#7b8475;padding:35px 0 45px}dialog{border:1px solid #dce1d1;border-radius:12px;padding:40px;width:min(440px,calc(100% - 32px));background:#f7f6f0;color:#20382f;box-shadow:0 30px 100px #14291f44}dialog::backdrop{background:#20382f88;backdrop-filter:blur(4px)}.close{position:absolute;right:15px;top:9px;border:0;background:none;font-size:29px;color:inherit;cursor:pointer}.dialog-intro{color:#74806b;font-size:14px}form{display:flex;flex-direction:column;margin-top:25px}label{font-size:12px;margin:15px 0 8px}input{width:100%;padding:13px;background:white;border:1px solid #cbd4c0;border-radius:4px;color:#20382f}.error{font-size:12px;color:#a02e2b;line-height:1.5}form .button{width:100%;margin-top:22px}@media(min-width:1450px){.hero{min-height:740px}}@media(max-width:1000px){.shell{width:calc(100% - 48px)}.hero{gap:30px}h1{font-size:64px}.code-body{font-size:10px}.code-body i{margin-right:10px}.brand{font-size:15px}nav{gap:15px}.note{right:0}.approach-grid{gap:35px}.lessons article{padding:18px}}@media(max-width:700px){.shell{width:calc(100% - 40px)}header{height:85px}.brand{font-size:14px;gap:6px}.brand img{width:29px;height:29px}.brand span{margin-left:-3px}nav a{display:none}.login-link{font-size:11px;padding:10px 12px}.login-link span{display:none}.hero{display:flex;flex-direction:column;gap:20px;padding:35px 0 65px;align-items:stretch}h1{font-size:72px;letter-spacing:-4px}.intro{font-size:15px}.code-scene{margin:25px 5px 0;padding-top:25px}.code-scene:before{width:100%;left:0}.code-body{font-size:11px}.approach-grid{display:block}.approach{padding:35px 0}h2{font-size:29px}.approach-grid>p{font-size:14px}.practice{padding:50px 0}.small-label{display:none}.lessons{grid-template-columns:1fr}.lessons p{min-height:0}.lessons h3{margin-top:20px}.closing{align-items:flex-start;flex-wrap:wrap;gap:12px}.closing-mark{display:none}.closing h2{font-size:27px}.closing .button{margin:5px 0 0}footer{flex-direction:column;gap:13px;padding:25px 0}footer span:nth-child(2){display:none}dialog{padding:30px 25px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Keep rotated illustrations inside the viewport on narrow screens. */
html,body{overflow-x:clip}
@media(max-width:700px){h1{font-size:clamp(55px,18vw,72px)}}