:root{--bg:#fff8ec;--card:#fffdf8;--text:#3b3355;--muted:#7a7090;--line:#f0e2c8;--g1:#4f8ef7;--g2:#a07be0;--g3:#f07d8c;--yellow:#ffc93c}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Nunito',sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden;font-size:17px}
h1,h2,h3,.logo,.btn,.tab{font-family:'Baloo 2',cursive}
.dots{position:fixed;inset:0;z-index:-1;background-image:radial-gradient(#f0dfbf 1.5px,transparent 1.5px);background-size:28px 28px;opacity:.6}
.grad{background:linear-gradient(90deg,var(--g1),var(--g2),var(--g3));-webkit-background-clip:text;background-clip:text;color:transparent}
.center{text-align:center}.muted{color:var(--muted)}
.nav{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:.8rem 5%;background:rgba(255,248,236,.85);backdrop-filter:blur(12px);border-bottom:2px dashed var(--line)}
.logo{font-weight:800;font-size:1.5rem;color:var(--text);text-decoration:none}
.spark{color:var(--g2);display:inline-block;animation:spin 6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.nav nav a{color:var(--muted);text-decoration:none;margin-left:1.2rem;font-weight:700;padding:.3rem .7rem;border-radius:999px;transition:.25s}
.nav nav a:hover{background:#ffe9b8;color:var(--text)}
.hero{max-width:1150px;margin:0 auto;min-height:85vh;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:2rem;padding:2rem 5%}
.badge{display:inline-block;background:#ffe9b8;padding:.3rem 1rem;border-radius:999px;font-weight:700}
.hero h1{font-size:clamp(2.2rem,5vw,3.8rem);line-height:1.15;margin:1rem 0}
.lead{color:var(--muted);font-size:1.2rem}
.hero-img{width:100%}
.float{animation:float 4s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-14px)}}
.cta{margin:1.6rem 0;display:flex;gap:1rem;flex-wrap:wrap}
.btn{padding:.8rem 1.8rem;border-radius:999px;text-decoration:none;font-weight:700;font-size:1.1rem;transition:.25s;border:3px solid var(--text)}
.btn.primary{background:var(--yellow);color:var(--text);box-shadow:4px 4px 0 var(--text)}
.btn.ghost{background:#fff;color:var(--text);box-shadow:4px 4px 0 var(--text)}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--text)}
.chat-bubble{background:#fff;border:2px solid var(--line);border-radius:20px 20px 20px 4px;padding:.9rem 1.2rem;max-width:480px;box-shadow:0 6px 0 var(--line)}
.who{font-weight:700;color:var(--g2)}
.cursor{animation:blink 1s step-end infinite;color:var(--g2)}
@keyframes blink{50%{opacity:0}}
.section{max-width:1100px;margin:0 auto;padding:5rem 5% 1rem}
.section h2{font-size:2.3rem;margin-bottom:1rem;line-height:1.2}
#features h2,#models h2,#timeline h2,#quiz h2{text-align:center}
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.split img{width:100%;background:#fff;border-radius:32px;border:3px solid var(--line);padding:1rem;box-shadow:0 10px 0 var(--line)}
.split p{margin-bottom:.8rem}
.fun-fact{background:#eaf2ff;border-left:6px solid var(--g1);padding:1rem 1.2rem;border-radius:14px;margin-top:1rem}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-top:2rem}
.card{background:var(--card);border:3px solid var(--line);border-radius:24px;padding:1.6rem;transition:.3s;box-shadow:0 8px 0 var(--line)}
.card:hover{transform:translateY(-8px) rotate(-1deg)}
.card .icon{font-size:2.6rem;width:70px;height:70px;display:grid;place-items:center;border-radius:20px;margin-bottom:.6rem}
.c1 .icon{background:#dce8ff}.c2 .icon{background:#efe4ff}.c3 .icon{background:#ffe1e6}.c4 .icon{background:#fff3b0}.c5 .icon{background:#d8f5e6}.c6 .icon{background:#ffe4cc}
.card h3{font-size:1.4rem}.card p{color:var(--muted)}
.tabs{display:flex;justify-content:center;gap:.8rem;margin:1.5rem 0;flex-wrap:wrap}
.tab{font-size:1.2rem;padding:.5rem 1.6rem;border-radius:999px;border:3px solid var(--text);background:#fff;color:var(--text);cursor:pointer;font-weight:700;transition:.25s}
.tab.active{background:var(--g2);color:#fff;box-shadow:3px 3px 0 var(--text)}
.tab-panel{background:#fff;border:3px solid var(--line);border-radius:24px;padding:2rem;max-width:720px;margin:0 auto;display:flex;gap:1.5rem;align-items:center;animation:pop .4s;box-shadow:0 8px 0 var(--line)}
.tab-panel .big{font-size:5rem}
.tab-panel h3{font-size:1.7rem}
.tab-panel ul{margin:.5rem 0 0 1.2rem;color:var(--muted)}
@keyframes pop{from{opacity:0;transform:scale(.9)}}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2rem;position:relative}
.step{background:#fff;border:3px solid var(--line);border-radius:24px;padding:1.5rem;text-align:center}
.step span{display:inline-block;background:var(--g1);color:#fff;font-weight:800;padding:.2rem 1rem;border-radius:999px;margin-bottom:.6rem}
.step:nth-child(2) span{background:var(--g2)}.step:nth-child(3) span{background:var(--g3)}
.tips{list-style:none;display:grid;gap:.8rem}
.tips li{background:#e9f8ef;padding:.8rem 1rem;border-radius:14px}
.tips li.no{background:#ffe8eb}
.rules{display:grid;gap:.9rem}
.rule{display:flex;gap:.8rem;align-items:flex-start;background:#fff;border:2px solid var(--line);border-radius:16px;padding:.9rem 1rem;font-size:1.05rem;transition:.25s}
.rule:hover{transform:translateX(6px);border-color:#7ec8a5}
.quiz-box{max-width:680px;margin:2rem auto 0;background:#fff;border:3px solid var(--text);border-radius:28px;padding:2rem;box-shadow:8px 8px 0 var(--text)}
.progress{height:12px;background:var(--line);border-radius:99px;overflow:hidden;margin-bottom:1.2rem}
#quiz-bar{height:100%;width:0;background:linear-gradient(90deg,var(--g1),var(--g2),var(--g3));transition:.4s}
.q{font-size:1.3rem;font-weight:700;margin-bottom:1rem}
.answers{display:grid;gap:.7rem}
.answers button{font:inherit;font-weight:600;text-align:left;padding:.8rem 1.1rem;border-radius:14px;border:2px solid var(--line);background:var(--bg);cursor:pointer;transition:.2s;color:var(--text)}
.answers button:hover:not(:disabled){border-color:var(--g2);transform:translateX(4px)}
.answers .ok{background:#d8f5e6;border-color:#3bb273}
.answers .bad{background:#ffe1e6;border-color:var(--g3)}
.result{margin-top:1rem;font-weight:700;min-height:1.5em;text-align:center}
.result button{margin-top:.8rem}
footer{text-align:center;padding:3rem;color:var(--muted);margin-top:4rem;border-top:2px dashed var(--line)}
.reveal{opacity:0;transform:translateY(40px);transition:.8s}
.reveal.show{opacity:1;transform:none}
main>section{display:none}
main>section.active{display:grid;animation:pageIn .5s ease}
main>section.active:not(.hero):not(.split){display:block}
main{min-height:calc(100vh - 160px)}
@keyframes pageIn{from{opacity:0;transform:translateY(20px)}}
.nav nav a.current{background:var(--yellow);color:var(--text)}
.pager{display:flex;justify-content:space-between;gap:1rem;max-width:1100px;margin:3rem auto 0;padding:0 5%}
.pager a{font-size:1rem}
.menu-btn{display:none;font-size:1.6rem;background:none;border:none;cursor:pointer}
@media(max-width:820px){.menu-btn{display:block}.nav{flex-wrap:wrap}.nav nav{display:none;width:100%;flex-direction:column}.nav nav.open{display:flex}.nav nav a{margin:.2rem 0}
.pager{flex-direction:column}.hero,.split,.steps{grid-template-columns:1fr}.split.reverse img{order:-1}.hero-img{max-width:340px;margin:auto}.tab-panel{flex-direction:column;text-align:center}}

.banner{display:block;width:100%;max-width:480px;margin:0 auto 1.5rem;border-radius:24px;border:3px solid var(--line);box-shadow:0 8px 0 var(--line)}
.hero-img,.split img{object-fit:contain}