body{margin:0;padding:0}:root{--bg:#1b1230;--bg-deep:#140b26;--surface:#241a3e;--surface-2:#2e2250;--line:#3a2c5c;--text:#f4f1fa;--muted:#b3a6ce;--lime:#c8f169;--cyan:#5eead4;--coral:#ff7a6e}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:Inter,sans-serif}body{background:radial-gradient(1200px 600px at 85% -10%, #5eead41a, transparent 60%), radial-gradient(900px 500px at 5% 110%, #c8f16914, transparent 60%), var(--bg);min-height:100vh}a{color:inherit}.wrap{max-width:1180px;margin:0 auto;padding:0 28px}header{padding:26px 0 0}.nav{justify-content:space-between;align-items:center;display:flex}.brand{letter-spacing:-.01em;align-items:center;gap:10px;font-family:Space Grotesk,sans-serif;font-size:19px;font-weight:700;display:flex}.brand-mark{background:linear-gradient(135deg, var(--lime), var(--cyan));color:#161022;border-radius:9px;justify-content:center;align-items:center;width:34px;height:34px;font-family:JetBrains Mono,monospace;font-size:15px;font-weight:700;display:flex}.brand-sub{color:var(--muted);letter-spacing:.04em;margin-top:1px;font-family:JetBrains Mono,monospace;font-size:11px;font-weight:400}nav.links{color:var(--muted);gap:28px;font-size:14px;display:flex}nav.links a{text-decoration:none;transition:color .15s}nav.links a:hover{color:var(--text)}.nav-cta{background:var(--surface-2);border:1px solid var(--line);color:var(--text);white-space:nowrap;border-radius:8px;padding:9px 16px;font-family:JetBrains Mono,monospace;font-size:13px;font-weight:600;text-decoration:none}.hero{grid-template-columns:1.05fr .95fr;align-items:start;gap:56px;padding:64px 0 40px;display:grid}.eyebrow{color:var(--cyan);background:#5eead40f;border:1px solid #5eead44d;border-radius:20px;align-items:center;gap:8px;margin-bottom:22px;padding:6px 12px;font-family:JetBrains Mono,monospace;font-size:12.5px;display:inline-flex}.eyebrow:before{content:"";background:var(--lime);width:6px;height:6px;box-shadow:0 0 8px var(--lime);border-radius:50%}h1{letter-spacing:-.02em;margin-bottom:20px;font-family:Space Grotesk,sans-serif;font-size:clamp(34px,4.4vw,54px);font-weight:700;line-height:1.05}h1 .hl{color:var(--lime)}h1 .hl2{color:var(--cyan)}.lede{color:var(--muted);max-width:480px;margin-bottom:30px;font-size:17px;line-height:1.6}.track-row{flex-wrap:wrap;gap:10px;margin-bottom:36px;display:flex}.track{color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:8px 13px;font-family:JetBrains Mono,monospace;font-size:12.5px}.track b{color:var(--lime);font-weight:600}.proof{border-top:1px solid var(--line);gap:32px;padding-top:24px;display:flex}.proof .num{color:var(--text);font-family:Space Grotesk,sans-serif;font-size:26px;font-weight:700}.proof .lbl{color:var(--muted);margin-top:2px;font-size:12.5px}.term{background:var(--bg-deep);border:1px solid var(--line);border-radius:14px;position:sticky;top:24px;overflow:hidden;box-shadow:0 30px 60px -20px #0009,0 0 0 1px #ffffff05}.term-bar{background:var(--surface);border-bottom:1px solid var(--line);align-items:center;gap:8px;padding:13px 16px;display:flex}.dot{border-radius:50%;width:10px;height:10px}.dot.r{background:#ff6b6b}.dot.y{background:#ffd166}.dot.g{background:#6be39a}.term-title{color:var(--muted);margin-left:8px;font-family:JetBrains Mono,monospace;font-size:12px}.term-body{padding:22px 22px 24px}.code-line{color:var(--muted);font-family:JetBrains Mono,monospace;font-size:13px;line-height:1.9}.code-line .kw{color:var(--cyan)}.code-line .fn{color:var(--lime)}.code-line .punc{color:var(--muted)}.field-row{margin:14px 0}.field-label{color:var(--cyan);margin-bottom:6px;font-family:JetBrains Mono,monospace;font-size:12px;display:block}.field-label .key{color:var(--muted)}.field-wrap{background:var(--surface);border:1px solid var(--line);border-radius:8px;align-items:center;padding:0 12px;transition:border-color .15s,box-shadow .15s;display:flex}.field-wrap:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px #c8f16924}.field-wrap span.q{color:var(--muted);font-family:JetBrains Mono,monospace;font-size:14px}input.field{color:var(--text);background:0 0;border:none;outline:none;flex:1;padding:11px 6px;font-family:JetBrains Mono,monospace;font-size:14px}input.field::placeholder{color:#5c4f80}.submit-btn{cursor:pointer;background:linear-gradient(90deg, var(--lime), var(--cyan));color:#14102a;border:none;border-radius:9px;justify-content:center;align-items:center;gap:8px;width:100%;margin-top:18px;padding:14px;font-family:Space Grotesk,sans-serif;font-size:15px;font-weight:700;transition:transform .12s,box-shadow .12s;display:flex}.submit-btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px -8px #c8f16973}.submit-btn:active{transform:translateY(0)}.fine{color:var(--muted);text-align:center;margin-top:12px;font-size:11.5px;line-height:1.5}.fine a{color:var(--cyan);text-decoration:none}.err{color:var(--coral);min-height:14px;margin-top:5px;font-family:JetBrains Mono,monospace;font-size:11.5px}.success{text-align:center;padding:20px 6px 8px}.success.show{display:block}.success .check{background:#c8f1691f;border:1px solid #c8f16959;border-radius:50%;justify-content:center;align-items:center;width:52px;height:52px;margin:0 auto 16px;display:flex}.success h3{margin-bottom:8px;font-family:Space Grotesk,sans-serif;font-size:19px}.success p{color:var(--muted);margin-bottom:18px;font-size:13.5px;line-height:1.6}.success .out{text-align:left;background:var(--surface);border:1px solid var(--line);color:var(--cyan);border-radius:8px;padding:14px;font-family:JetBrains Mono,monospace;font-size:12.5px}.success .out .k{color:var(--muted)}.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:20px;padding:22px 0}.strip .wrap{flex-wrap:wrap;justify-content:center;align-items:center;gap:40px;display:flex;overflow:hidden}.strip span{color:var(--muted);letter-spacing:.03em;font-family:JetBrains Mono,monospace;font-size:12.5px}.courses{padding:70px 0 30px}.sec-head{max-width:560px;margin-bottom:40px}.sec-eyebrow{color:var(--lime);letter-spacing:.05em;margin-bottom:10px;font-family:JetBrains Mono,monospace;font-size:12px}.sec-head h2{letter-spacing:-.01em;font-family:Space Grotesk,sans-serif;font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.2}.grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:22px;transition:border-color .15s,transform .15s}.card:hover{border-color:var(--cyan);transform:translateY(-3px)}.card .tag{color:var(--cyan);margin-bottom:12px;font-family:JetBrains Mono,monospace;font-size:11px;display:inline-block}.card h3{margin-bottom:8px;font-family:Space Grotesk,sans-serif;font-size:18px}.card p{color:var(--muted);font-size:13.5px;line-height:1.55}.cta-bottom{text-align:center;background:linear-gradient(135deg, var(--surface), var(--surface-2));border:1px solid var(--line);border-radius:16px;margin:70px 0 60px;padding:44px}.cta-bottom h2{margin-bottom:10px;font-family:Space Grotesk,sans-serif;font-size:26px}.cta-bottom p{color:var(--muted);margin-bottom:22px;font-size:14.5px}.cta-bottom .btn{background:linear-gradient(90deg, var(--lime), var(--cyan));color:#14102a;border-radius:9px;padding:13px 26px;font-family:Space Grotesk,sans-serif;font-size:14.5px;font-weight:700;text-decoration:none;display:inline-block}footer{border-top:1px solid var(--line);text-align:center;padding:26px 0 40px}footer p{color:var(--muted);font-family:JetBrains Mono,monospace;font-size:12.5px}footer a{color:var(--cyan);text-decoration:none}footer img{width:170px}@media (width<=920px){.hero{grid-template-columns:1fr;gap:36px}.term{position:static}.grid{grid-template-columns:1fr}nav.links{display:none}.proof{gap:22px}}:focus-visible{outline:2px solid var(--lime);outline-offset:2px}@media (prefers-reduced-motion:reduce){*{transition:none!important}}.brand img{cursor:pointer;width:170px}