:root{
  --ink:#2b1240;
  --ink-soft:#4a2560;
  --purple:#7b3fd4;
  --purple-d:#5a23a8;
  --pink:#ff7bd5;
  --pink-d:#e04fb0;
  --lime:#b6f36a;
  --green:#7bd88f;
  --green-d:#2c6b3f;
  --yellow:#ffd93d;
  --cyan:#5fe0e0;
  --bg:#efe6ff;
  --card:#ffffff;
  --shadow:6px 6px 0 var(--ink);
  --shadow-sm:4px 4px 0 var(--ink);
  --radius:22px;
  --bounce:cubic-bezier(.34,1.56,.64,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Fredoka',system-ui,sans-serif;
  color:var(--ink);background:var(--bg);
  overflow-x:hidden;line-height:1.55;
  background-image:radial-gradient(circle at 20% 10%,#fff3 0 2px,transparent 2px),radial-gradient(circle at 80% 40%,#fff3 0 2px,transparent 2px);
  background-size:60px 60px,80px 80px;
}
h1,h2,h3,h4,.logo-text{font-family:'Baloo 2',cursive;line-height:1.05;font-weight:800}
a{color:inherit;text-decoration:none}
img,svg{display:block}
::selection{background:var(--pink);color:#fff}

/* ===== BACKGROUND SKY ===== */
.sky{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.cloud{position:absolute;background:#fff;border-radius:50%;opacity:.85;
  box-shadow:40px 10px 0 -6px #fff, 80px 0 0 -14px #fff;}
.c1{width:120px;height:80px;top:12%;left:-160px;animation:drift 46s linear infinite}
.c2{width:90px;height:60px;top:34%;left:-160px;animation:drift 62s linear infinite;animation-delay:-20s}
.c3{width:150px;height:95px;top:64%;left:-220px;animation:drift 78s linear infinite;animation-delay:-40s}
@keyframes drift{to{transform:translateX(calc(100vw + 300px))}}
.bolt-bg{position:absolute;font-size:38px;opacity:.14;animation:twinkle 3s ease-in-out infinite}
.b1{top:18%;right:8%}
.b2{top:58%;left:6%;animation-delay:-1.4s}
@keyframes twinkle{0%,100%{opacity:.1;transform:scale(1) rotate(-6deg)}50%{opacity:.3;transform:scale(1.18) rotate(6deg)}}

/* ===== NAV ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;gap:22px;
  padding:14px clamp(16px,4vw,50px);transition:.4s var(--bounce)}
.nav.scrolled{background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:4px solid var(--ink)}
.logo{display:flex;align-items:center;gap:10px;font-size:21px;font-family:'Baloo 2'}
.logo-brain{animation:wobble 3.5s ease-in-out infinite}
@keyframes wobble{0%,100%{transform:rotate(-6deg)}50%{transform:rotate(6deg)}}
.logo-text b{color:var(--pink-d)}
.nav-links{display:flex;gap:20px;margin-left:auto;font-weight:600;font-size:16px}
.nav-links a{padding:6px 12px;border-radius:12px;transition:.25s var(--bounce)}
.nav-links a:hover{background:var(--yellow);transform:translateY(-2px) rotate(-2deg)}
.nav-cta{margin-left:0}
.nav-links + .nav-cta{margin-left:0}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:'Baloo 2';font-weight:800;font-size:17px;cursor:pointer;
  padding:13px 26px;border-radius:16px;border:4px solid var(--ink);
  background:#fff;color:var(--ink);box-shadow:var(--shadow-sm);
  transition:.18s var(--bounce);user-select:none}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn-bolt{background:var(--yellow)}
.btn-ghost{background:#fff}
.btn.full{width:100%}

/* ===== HERO ===== */
.hero{position:relative;min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:30px;
  padding:130px clamp(16px,5vw,70px) 80px}
.hero-text{max-width:600px}
.sticker{display:inline-block;background:var(--lime);border:4px solid var(--ink);border-radius:999px;
  padding:7px 18px;font-weight:700;font-size:14px;box-shadow:var(--shadow-sm);margin-bottom:22px;
  transform:rotate(-2deg)}
.hero h1{font-size:clamp(48px,8.5vw,104px);letter-spacing:-.02em;margin-bottom:18px}
.word-brain{color:var(--pink-d);position:relative;display:inline-block}
.word-brain::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:12px;background:var(--yellow);z-index:-1;border-radius:6px;transform:rotate(-1deg)}
.hero-sub{font-size:clamp(16px,1.9vw,19px);color:var(--ink-soft);margin-bottom:30px;max-width:520px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:26px;flex-wrap:wrap}
.hero-stats b{font-family:'Baloo 2';font-size:clamp(28px,3.4vw,40px);color:var(--purple-d);display:block;line-height:1}
.hero-stats span{font-size:13.5px;color:var(--ink-soft);font-weight:500}

/* hero stage */
.hero-stage{position:relative;height:min(78vh,660px);display:grid;place-items:center}
.lab-machine{position:relative;width:min(430px,90%);height:100%;display:grid;place-items:center}
.coil{position:absolute;bottom:6%;width:54px;height:230px;background:repeating-linear-gradient(180deg,#c9b6ff 0 8px,#7b3fd4 8px 16px);
  border:4px solid var(--ink);border-radius:16px;box-shadow:var(--shadow-sm)}
.coil.left{left:2%}
.coil.right{right:2%}
.jar{position:relative;width:180px;height:210px;z-index:3;
  background:linear-gradient(160deg,rgba(190,230,255,.55),rgba(140,200,255,.35));
  border:5px solid var(--ink);border-radius:26px 26px 20px 20px;box-shadow:var(--shadow);
  display:grid;place-items:center;overflow:hidden;animation:bob 3.4s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-12px) rotate(1deg)}}
.brain-svg{width:130px;animation:pulse-brain 2.4s ease-in-out infinite}
@keyframes pulse-brain{0%,100%{transform:scale(1)}50%{transform:scale(1.07)}}
.jar-glass{position:absolute;top:0;left:0;width:40%;height:100%;background:linear-gradient(90deg,rgba(255,255,255,.65),transparent);pointer-events:none}
.bub{position:absolute;border-radius:50%;background:rgba(255,255,255,.7);bottom:-20px;animation:rise 4s linear infinite}
.bb1{width:12px;height:12px;left:30%;animation-delay:0s}
.bb2{width:8px;height:8px;left:58%;animation-delay:-1.4s}
.bb3{width:15px;height:15px;left:44%;animation-delay:-2.6s}
@keyframes rise{to{transform:translateY(-230px);opacity:0}}
.spark{position:absolute;font-size:40px;filter:drop-shadow(0 0 6px var(--yellow));animation:zapflash 2.2s ease-in-out infinite}
.s1{top:8%;left:22%}
.s2{top:2%;right:26%;animation-delay:-.7s}
.s3{top:30%;right:14%;animation-delay:-1.4s}
@keyframes zapflash{0%,100%{opacity:0;transform:scale(.6) rotate(-12deg)}40%{opacity:1;transform:scale(1.2) rotate(8deg)}60%{opacity:.4}}
.monster{position:absolute;bottom:2%;right:2%;z-index:4;animation:monster-bob 3s ease-in-out infinite;filter:drop-shadow(6px 8px 0 rgba(43,18,64,.18))}
@keyframes monster-bob{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-14px) rotate(2deg)}}
.scroll-hint{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);font-weight:700;color:var(--purple-d);
  background:#fff;border:4px solid var(--ink);border-radius:999px;padding:8px 22px;box-shadow:var(--shadow-sm);animation:bounce-y 1.8s ease-in-out infinite}
@keyframes bounce-y{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* ===== TAPE ===== */
.tape{background:var(--purple-d);border-block:5px solid var(--ink);overflow:hidden;padding:12px 0;transform:rotate(-1.2deg);margin:20px 0 0}
.tape-track{display:inline-flex;gap:40px;white-space:nowrap;font-family:'Baloo 2';font-weight:800;font-size:clamp(20px,2.6vw,32px);color:#fff;animation:tape 26s linear infinite}
.tape-track span{display:inline-flex;align-items:center;gap:40px}
.tape-track span::after{content:"🧠";font-size:.8em}
@keyframes tape{to{transform:translateX(-50%)}}

/* ===== SECTIONS ===== */
.section{padding:clamp(70px,8vw,120px) clamp(16px,5vw,70px)}
.section-head{max-width:680px;margin-bottom:44px}
.section-head h2{font-size:clamp(32px,5vw,58px);margin-bottom:14px}
.hl{color:var(--pink-d);position:relative}
.hl::after{content:"";position:absolute;left:-2px;right:-2px;bottom:4px;height:10px;background:var(--cyan);z-index:-1;border-radius:5px}
.section-head p{font-size:17px;color:var(--ink-soft);font-weight:500}

/* ===== LAB ===== */
.lab-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:30px;align-items:stretch}
.lab-panel,.lab-stage{background:var(--card);border:5px solid var(--ink);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}
.lab-panel h3{font-size:22px;margin-bottom:16px}
.parts{display:grid;gap:10px;margin-bottom:24px}
.part{text-align:left;padding:13px 18px;border-radius:14px;border:4px solid var(--ink);background:#fff;
  font-family:'Fredoka';font-weight:600;font-size:15.5px;color:var(--ink);cursor:pointer;transition:.18s var(--bounce);box-shadow:3px 3px 0 var(--ink)}
.part:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--ink)}
.part.active{background:var(--lime)}
.range{display:flex;align-items:center;gap:16px;margin-bottom:22px;font-weight:700}
input[type=range]{-webkit-appearance:none;appearance:none;flex:1;height:12px;border-radius:8px;background:#e6dcff;border:3px solid var(--ink);outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;border-radius:50%;background:var(--pink);border:4px solid var(--ink);cursor:pointer}
input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--pink);border:4px solid var(--ink);cursor:pointer}
#voltOut{min-width:96px;text-align:right;color:var(--purple-d);font-family:'Baloo 2'}
.lab-stage{position:relative;display:grid;place-items:center;overflow:hidden;background:linear-gradient(180deg,#f6f0ff,#e9dcff)}
.stage-glow{position:absolute;width:60%;height:60%;border-radius:50%;background:radial-gradient(circle,rgba(255,217,61,.5),transparent 70%);opacity:0;transition:.4s}
.lab-stage.charging .stage-glow{opacity:1;animation:glow-pulse .6s ease-in-out infinite}
@keyframes glow-pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.15)}}
.build-monster{width:min(280px,72%);transition:transform .2s}
.build-monster.shake{animation:shake .5s ease-in-out infinite}
@keyframes shake{0%,100%{transform:translateX(0) rotate(0)}25%{transform:translateX(-5px) rotate(-1deg)}75%{transform:translateX(5px) rotate(1deg)}}
.build-monster.alive{animation:alive-hop .9s var(--bounce) infinite}
@keyframes alive-hop{0%,100%{transform:translateY(0) scale(1)}40%{transform:translateY(-16px) scale(1.03)}70%{transform:translateY(0) scale(.98)}}
.zap-layer{position:absolute;inset:0;pointer-events:none}
.zap{position:absolute;font-size:52px;animation:zapfly .8s ease-out forwards}
@keyframes zapfly{0%{opacity:0;transform:scale(.3) rotate(-20deg)}30%{opacity:1;transform:scale(1.3) rotate(10deg)}100%{opacity:0;transform:scale(.7) translateY(-40px)}}
.name-tag{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);background:var(--yellow);border:4px solid var(--ink);
  border-radius:999px;padding:7px 20px;font-family:'Baloo 2';font-weight:800;box-shadow:var(--shadow-sm);white-space:nowrap;max-width:92%;overflow:hidden;text-overflow:ellipsis}

/* ===== QUIZ ===== */
.quiz-section{background:linear-gradient(180deg,transparent,#f7ecff,transparent)}
.quiz{max-width:720px;background:var(--card);border:5px solid var(--ink);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}
.quiz-progress{height:16px;border-radius:10px;border:3px solid var(--ink);background:#eee;overflow:hidden;margin-bottom:26px}
.quiz-bar{height:100%;width:0;background:var(--pink);transition:width .4s var(--bounce)}
.quiz-q{font-family:'Baloo 2';font-size:clamp(22px,3vw,30px);margin-bottom:22px}
.quiz-options{display:grid;gap:12px}
.quiz-opt{text-align:left;padding:16px 20px;border-radius:16px;border:4px solid var(--ink);background:#fff;
  font-family:'Fredoka';font-weight:600;font-size:16.5px;cursor:pointer;transition:.18s var(--bounce);box-shadow:3px 3px 0 var(--ink)}
.quiz-opt:hover{background:var(--lime);transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--ink)}
.quiz-result{text-align:center;animation:pop .5s var(--bounce)}
@keyframes pop{0%{transform:scale(.6);opacity:0}100%{transform:scale(1);opacity:1}}
.qr-emoji{font-size:70px;animation:monster-bob 2.4s ease-in-out infinite}
.quiz-result h3{font-size:30px;margin:12px 0 10px;color:var(--purple-d)}
.quiz-result p{font-size:17px;color:var(--ink-soft);margin-bottom:22px}

/* ===== FACTS ===== */
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px}
.fact{position:relative;min-height:210px;border-radius:var(--radius);border:5px solid var(--ink);cursor:pointer;
  perspective:1000px;background:transparent;padding:0}
.fact-inner{position:relative;width:100%;height:100%;min-height:210px;transition:transform .6s var(--bounce);transform-style:preserve-3d}
.fact.flip .fact-inner{transform:rotateY(180deg)}
.fact-face{position:absolute;inset:0;border-radius:16px;display:grid;place-items:center;text-align:center;padding:24px;
  backface-visibility:hidden;-webkit-backface-visibility:hidden}
.fact-front{background:var(--cyan)}
.fact-front .fi{font-size:52px;margin-bottom:12px;animation:monster-bob 3s ease-in-out infinite}
.fact-front b{font-family:'Baloo 2';font-size:21px}
.fact-front small{display:block;margin-top:8px;font-weight:600;opacity:.7}
.fact-back{background:var(--purple);color:#fff;transform:rotateY(180deg);font-size:16px;font-weight:500;line-height:1.5}

/* ===== TEAM ===== */
.team{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:24px}
.hero-card{background:var(--card);border:5px solid var(--ink);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:26px;text-align:center;transition:.2s var(--bounce)}
.hero-card:hover{transform:translateY(-8px) rotate(-1.5deg)}
.hero-card .ava{font-size:64px;margin-bottom:12px;display:inline-block;animation:monster-bob 3s ease-in-out infinite}
.hero-card h3{font-size:22px;margin-bottom:6px}
.hero-card .role{display:inline-block;background:var(--yellow);border:3px solid var(--ink);border-radius:999px;
  padding:3px 14px;font-size:13px;font-weight:700;margin-bottom:12px}
.hero-card p{color:var(--ink-soft);font-size:15px;font-weight:500}

/* ===== CTA ===== */
.cta{padding:clamp(70px,8vw,110px) clamp(16px,5vw,70px)}
.cta-box{position:relative;max-width:820px;margin:0 auto;text-align:center;background:var(--lime);
  border:5px solid var(--ink);border-radius:32px;box-shadow:10px 10px 0 var(--ink);padding:clamp(34px,5vw,60px)}
.cta-frank{font-size:72px;animation:monster-bob 2.6s ease-in-out infinite}
.cta-box h2{font-size:clamp(30px,4.6vw,50px);margin:12px 0 16px}
.cta-box>p{font-size:17px;color:var(--ink-soft);margin-bottom:26px;font-weight:500}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.cta-form input{flex:1;min-width:220px;padding:15px 20px;border-radius:16px;border:4px solid var(--ink);
  font-family:'Fredoka';font-size:16px;outline:none;background:#fff}
.cta-note{margin-top:16px;font-weight:700;color:var(--purple-d);min-height:22px}

/* ===== FOOTER ===== */
.footer{text-align:center;padding:50px 20px;border-top:5px solid var(--ink);background:#fff}
.foot-brain{font-size:44px;animation:monster-bob 3s ease-in-out infinite;display:inline-block}
.footer p{font-weight:600;margin-top:10px}
.foot-small{color:var(--ink-soft);font-size:14px;font-weight:500}

/* ===== TOAST ===== */
.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,150%);background:var(--purple-d);color:#fff;
  border:4px solid var(--ink);border-radius:16px;padding:13px 26px;font-family:'Baloo 2';font-weight:800;font-size:17px;
  box-shadow:var(--shadow);z-index:300;transition:.4s var(--bounce)}
.toast.show{transform:translate(-50%,0)}

/* ===== RESPONSIVE ===== */
@media(max-width:940px){
  .nav-links{display:none}
  .hero{grid-template-columns:1fr;padding-top:120px;text-align:center}
  .hero-text{max-width:100%;margin:0 auto}
  .hero-btns,.hero-stats{justify-content:center}
  .hero-stage{height:min(60vh,520px);order:-1}
  .lab-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
  .nav-cta{display:none}
  .hero h1{font-size:52px}
  .monster{width:130px}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}