@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--gp-bg:#071727;--gp-panel:#0d2235;--gp-panel2:#102b40;--gp-line:rgba(163,202,224,.15);--gp-text:#edf7fc;--gp-muted:#9db4c5;--gp-aqua:#59ead8;--gp-blue:#6daaff;--gp-violet:#b3a0ff;--gp-gold:#ffc976;--gp-radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 80% -10%,rgba(39,127,159,.19),transparent 42%),var(--gp-bg);color:var(--gp-text);font-family:'DM Sans',sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.gp-shell{width:min(1180px,calc(100% - 40px));margin:auto}.gp-top{position:sticky;top:0;z-index:20;background:rgba(6,20,34,.91);backdrop-filter:blur(16px);border-bottom:1px solid var(--gp-line)}.gp-nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.gp-brand{display:flex;align-items:center;gap:12px;font-family:'Space Grotesk',sans-serif;font-weight:700;letter-spacing:.08em}.gp-mark{display:grid;place-items:center;width:43px;height:43px;border-radius:14px;color:var(--gp-aqua);background:linear-gradient(145deg,#153e53,#102338);border:1px solid #285568;font-size:22px}.gp-brand small{display:block;font:600 9px 'DM Sans';letter-spacing:.15em;color:var(--gp-muted)}.gp-links{display:flex;align-items:center;gap:5px;flex-wrap:wrap}.gp-links a{font-size:13px;color:var(--gp-muted);padding:9px 11px;border-radius:10px}.gp-links a:hover,.gp-links a.active{color:var(--gp-aqua);background:rgba(89,234,216,.08)}.gp-links .duck-link{color:var(--gp-gold)}.gp-cta,.gp-button{border:1px solid transparent;border-radius:12px;padding:11px 16px;cursor:pointer;font-weight:700;font-size:13px;display:inline-flex;align-items:center;justify-content:center;gap:9px;transition:.2s}.gp-cta,.gp-button.primary{color:#04222a;background:linear-gradient(110deg,#69f1d9,#7dd6ff)}.gp-button.secondary{border-color:var(--gp-line);color:var(--gp-text);background:rgba(255,255,255,.025)}.gp-button:hover,.gp-cta:hover{transform:translateY(-2px);filter:brightness(1.06)}.gp-hero{padding:76px 0 46px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}.gp-kicker{display:inline-flex;align-items:center;gap:9px;text-transform:uppercase;letter-spacing:.14em;color:var(--gp-aqua);font-size:10px;font-weight:700}.gp-kicker:before{content:'';width:7px;height:7px;border-radius:50%;background:var(--gp-aqua);box-shadow:0 0 15px var(--gp-aqua)}h1,h2,h3,h4{font-family:'Space Grotesk',sans-serif;line-height:1.12;letter-spacing:-.035em}h1{font-size:clamp(38px,5.6vw,68px);margin:19px 0}h2{font-size:clamp(30px,4vw,44px);margin:10px 0 14px}h3{font-size:21px;margin:0 0 10px}.gp-gradient{background:linear-gradient(100deg,#70f0d6,#80bfff 58%,#b5a5ff);-webkit-background-clip:text;background-clip:text;color:transparent}.gp-lede{font-size:17px;color:#b4c7d5;max-width:700px}.gp-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}.gp-art{min-height:300px;border:1px solid var(--gp-line);border-radius:30px;background:radial-gradient(circle at 50% 45%,rgba(67,201,199,.16),transparent 52%),linear-gradient(145deg,#0b2338,#0a1a2b);position:relative;overflow:hidden;display:grid;place-items:center}.gp-art:before,.gp-art:after{content:'';position:absolute;border:1px solid rgba(89,234,216,.2);border-radius:50%;width:240px;height:240px}.gp-art:after{width:320px;height:320px}.gp-orbit{position:absolute;border:1px dashed rgba(115,179,218,.26);width:370px;height:170px;border-radius:50%;transform:rotate(-30deg)}.gp-core{z-index:2;display:grid;place-items:center;width:105px;height:105px;border-radius:32px;background:linear-gradient(145deg,#1a5667,#102a40);border:1px solid #3a9b9f;box-shadow:0 0 70px rgba(89,234,216,.2);font-size:42px;color:var(--gp-aqua)}.gp-float{position:absolute;z-index:3;padding:9px 12px;border:1px solid var(--gp-line);border-radius:12px;background:#0b2031;color:#c8e3ef;font-size:12px}.gp-float.f1{top:19%;left:8%}.gp-float.f2{top:24%;right:7%}.gp-float.f3{bottom:18%;left:15%}.gp-float.f4{bottom:13%;right:9%}.gp-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:12px auto 46px}.gp-stat{padding:19px;border:1px solid var(--gp-line);background:rgba(14,38,57,.74);border-radius:17px}.gp-stat strong{font:700 28px 'Space Grotesk';display:block;color:var(--gp-aqua)}.gp-stat span{font-size:12px;color:var(--gp-muted)}.gp-section{padding:34px 0 68px}.gp-section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:24px}.gp-section-head p,.gp-muted{color:var(--gp-muted)}.gp-section-head p{max-width:720px;margin:0}.gp-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.gp-card{border:1px solid var(--gp-line);background:linear-gradient(150deg,rgba(15,40,60,.92),rgba(9,28,44,.96));border-radius:var(--gp-radius);padding:22px;min-width:0}.gp-card p{color:#afc3d1;font-size:14px}.gp-card .meta{font-size:11px;color:var(--gp-muted);display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.gp-chip{display:inline-flex;padding:5px 9px;border-radius:8px;background:rgba(89,234,216,.09);border:1px solid rgba(89,234,216,.18);font-size:10px;color:var(--gp-aqua);font-weight:700;text-transform:uppercase;letter-spacing:.06em}.gp-card-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:17px}.gp-toolbar{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}.gp-field{min-width:180px;flex:1;background:#0b2031;color:var(--gp-text);border:1px solid var(--gp-line);border-radius:12px;padding:12px 14px;outline:none}.gp-field:focus{border-color:var(--gp-aqua)}.gp-note{padding:14px 17px;border:1px solid rgba(255,201,118,.23);background:rgba(255,201,118,.055);color:#d8c6a7;border-radius:14px;font-size:12px;margin:24px 0}.gp-empty{padding:25px;border:1px dashed var(--gp-line);border-radius:17px;color:var(--gp-muted);grid-column:1/-1}.gp-two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.gp-list{padding:0;list-style:none}.gp-list li{padding:12px 0;border-bottom:1px solid var(--gp-line);font-size:14px;color:#bed0dc}.gp-list li:before{content:'↗';color:var(--gp-aqua);margin-right:10px}.gp-progress{height:7px;border-radius:9px;background:#173246;overflow:hidden}.gp-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--gp-aqua),var(--gp-blue));border-radius:9px}.gp-footer{border-top:1px solid var(--gp-line);padding:28px 0;color:var(--gp-muted);font-size:12px}.gp-footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.gp-footer a{color:#d5e7ef}.gp-lesson{cursor:pointer;transition:.2s}.gp-lesson:hover{transform:translateY(-3px);border-color:rgba(89,234,216,.4)}.gp-lesson.selected{border-color:var(--gp-aqua);box-shadow:0 0 0 1px rgba(89,234,216,.14)}.gp-quiz-option{display:block;width:100%;text-align:left;margin:9px 0;background:#0a1d2e;border:1px solid var(--gp-line);color:var(--gp-text);border-radius:11px;padding:12px;cursor:pointer}.gp-quiz-option:hover{border-color:var(--gp-aqua)}.gp-feedback{padding:12px;border-radius:11px;background:rgba(89,234,216,.08);color:#bcefe7;margin-top:12px}.gp-microduck{background:radial-gradient(ellipse at 80% 20%,rgba(255,201,118,.12),transparent 40%),var(--gp-bg)}.gp-duck-figure{font-size:85px;filter:drop-shadow(0 10px 30px rgba(255,201,118,.18));animation:duckfloat 3.6s ease-in-out infinite}@keyframes duckfloat{50%{transform:translateY(-9px) rotate(2deg)}}.gp-terminal{background:#05121f;border:1px solid var(--gp-line);border-radius:16px;padding:17px;font:12px/1.8 ui-monospace,monospace;color:#95e9d9;overflow-wrap:anywhere}.gp-terminal .dim{color:#7d9bad}.gp-footer-links{display:flex;gap:14px;flex-wrap:wrap}@media(max-width:850px){.gp-hero{grid-template-columns:1fr;padding-top:48px}.gp-art{min-height:270px}.gp-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.gp-stats{grid-template-columns:repeat(2,1fr)}.gp-two{grid-template-columns:1fr}.gp-nav{align-items:flex-start;padding:15px 0;flex-wrap:wrap}.gp-links{order:3;width:100%;overflow-x:auto;flex-wrap:nowrap}.gp-links a{white-space:nowrap}.gp-cta{margin-left:auto}}@media(max-width:560px){.gp-shell{width:min(100% - 26px,1180px)}.gp-grid{grid-template-columns:1fr}.gp-section-head{display:block}.gp-section-head .gp-button{margin-top:16px}.gp-hero{gap:24px}.gp-art{min-height:245px}.gp-stat strong{font-size:24px}.gp-cta{padding:9px 12px}.gp-links a{padding:8px}.gp-float{font-size:10px}.gp-footer-inner{display:block}}