:root{
  --navy:#083d77;
  --blue:#0788df;
  --blue2:#19b6ef;
  --orange:#ff9518;
  --cream:#fffaf0;
  --sky:#eaf8ff;
  --ink:#17364f;
  --muted:#5c7284;
  --yellow:#ffd84d;
  --mint:#c8f3e9;
  --shadow:0 18px 45px rgba(18,55,88,.14)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:82px}
body{margin:0;font-family:"Trebuchet MS","Segoe UI",Arial,sans-serif;color:var(--ink);line-height:1.55;background:#fff}
a{color:inherit}
.wrap{width:min(1180px,calc(100% - 38px));margin:auto}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:16px;top:16px;z-index:100;background:#fff;padding:10px 14px;border-radius:8px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid #e4edf4;box-shadow:0 4px 20px rgba(20,55,85,.04)}
.nav-wrap{min-height:82px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;margin-right:auto}
.brand-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:var(--yellow);color:var(--navy);font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-size:25px;font-weight:700;box-shadow:0 6px 14px rgba(255,189,0,.22)}
.brand strong{display:block;color:var(--navy);font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-size:20px;line-height:1;font-weight:700}
.brand small{display:block;color:#1686c9;font-weight:800;margin-top:5px;font-size:12px}
nav{display:flex;gap:23px}
nav a{text-decoration:none;font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-size:13px;font-weight:600;color:#123e66;transition:.2s}
nav a:hover{color:var(--blue)}
.nav-cta{background:var(--blue);color:#fff;text-decoration:none;font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-weight:600;padding:11px 17px;border-radius:999px;font-size:12px;box-shadow:0 8px 20px rgba(7,136,223,.22);transition:.2s}
.nav-cta:hover{transform:translateY(-1px);background:#0679c9}
.hero{position:relative;min-height:670px;background-color:#118fdd;background-image:url("hero-welcome.png.png");background-size:auto 100%;background-position:right center;background-repeat:no-repeat;overflow:hidden}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,77,151,.94) 0%,rgba(5,102,187,.82) 27%,rgba(0,114,213,.30) 51%,rgba(0,80,150,.05) 68%,rgba(0,0,0,0) 79%)}
.hero-content{position:relative;z-index:2;min-height:670px;display:flex;align-items:center}
.hero-copy{width:min(570px,50%);padding:42px 0}
.kicker,.eyebrow,.section-head p{font-size:12px;letter-spacing:.14em;font-weight:900;color:#0e8dce;margin:0 0 9px}
.hero .kicker{color:#cfefff}
.hero h1,.hero h2,.section-head h2,.how h2,.sample h2,.book-card h3,.learning-grid h3,.step-list b,.perfect strong{
  font-family:"Fredoka","Trebuchet MS",Arial,sans-serif
}
.hero h1{font-size:clamp(52px,5.5vw,78px);line-height:.94;margin:0;color:#fff;letter-spacing:-.045em;text-shadow:0 3px 14px rgba(0,39,87,.18)}
.hero h2{font-size:clamp(30px,3vw,44px);color:#ffd64c;margin:16px 0 20px;line-height:1.02;text-shadow:0 2px 8px rgba(0,39,87,.16)}
.hero-text{font-size:18px;max-width:540px;color:#f4fbff;margin:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 22px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:49px;padding:12px 22px;border-radius:999px;text-decoration:none;font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-weight:600;transition:.2s}
.button:hover{transform:translateY(-2px)}
.primary{background:#087fe6;color:#fff;box-shadow:0 10px 25px rgba(0,64,135,.24)}
.hero .primary{background:#ff9518;color:#fff}
.glass{background:rgba(255,255,255,.16);color:#fff;border:2px solid rgba(255,255,255,.72);backdrop-filter:blur(6px)}
.section{padding:88px 0}
.section-head{text-align:center;max-width:780px;margin:0 auto 42px}
.section-head h2,.how h2,.sample h2{font-size:clamp(34px,4vw,49px);font-weight:700;line-height:1.05;color:var(--navy);margin:5px 0 12px;letter-spacing:-.025em}
.section-head span,.lead{color:var(--muted);font-size:17px}

/* Books */
.books{background:linear-gradient(180deg,#fff9ed 0%,#fffdf8 55%,#fff 100%)}
.book-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:start}
.book-card{text-align:center;display:flex;flex-direction:column;align-items:center;min-width:0}
.cover-link{display:flex;width:100%;max-width:315px;height:435px;align-items:center;justify-content:center;text-decoration:none;background:transparent}
.book-cover-image{display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;background:transparent;border:0;border-radius:0;box-shadow:none;transition:transform .25s ease}
.cover-link:hover .book-cover-image{transform:translateY(-7px) scale(1.015)}
.book-card h3{margin:16px 0 5px;color:var(--navy);font-size:21px;font-weight:700}
.book-card p{margin:0;max-width:250px;color:var(--muted);font-size:13px;min-height:42px}
.book-buy{display:inline-flex;margin-top:15px;padding:9px 17px;border-radius:999px;background:#ff9900;color:#17202a;text-decoration:none;font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-size:13px;font-weight:600;box-shadow:0 7px 16px rgba(105,70,15,.13);transition:.2s}
.book-buy:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(105,70,15,.2)}

/* How it works */
.how{background:linear-gradient(180deg,#d8faf4 0%,#c9f1ec 100%);position:relative;overflow:hidden}
.how:before,.how:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.28);pointer-events:none}
.how:before{width:280px;height:280px;left:-100px;top:-90px}
.how:after{width:360px;height:360px;right:-150px;bottom:-170px}
.how-playful{position:relative;z-index:1;display:grid;grid-template-columns:.88fr 1.12fr;gap:54px;align-items:center}
.how-intro h2{max-width:470px;margin-bottom:14px}
.how-intro .lead{max-width:470px;color:#315d66}
.how-scene{margin-top:26px;position:relative;min-height:220px;background:linear-gradient(145deg,#fff7d8,#fffef7);border:3px solid #3aaec4;border-radius:26px;padding:28px 24px 24px 126px;box-shadow:0 16px 35px rgba(25,105,117,.13);overflow:hidden}
.book-emoji{position:absolute;left:22px;bottom:28px;font-size:80px;filter:drop-shadow(0 8px 8px rgba(30,70,80,.16))}
.scene-riddle small{display:block;font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-size:11px;font-weight:700;letter-spacing:.12em;color:#d56b16}
.scene-riddle p{font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-size:20px;line-height:1.22;color:#163d58;margin:10px 0 0}
.scene-riddle strong{position:absolute;right:24px;bottom:22px;width:56px;height:56px;display:grid;place-items:center;border-radius:50%;background:#ff9b20;color:#fff;font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-size:34px;box-shadow:0 9px 18px rgba(214,101,20,.22)}
.scene-tools{position:absolute;left:34px;top:22px;font-size:25px;transform:rotate(-9deg)}
.playful-steps{display:grid;gap:8px}
.playful-steps article{display:grid;grid-template-columns:58px 46px 1fr;align-items:center;background:rgba(255,255,255,.7);border:0;border-bottom:1px solid rgba(7,107,116,.22);border-radius:0;padding:12px 8px;box-shadow:none;transition:.2s}
.playful-steps article:hover{transform:translateX(5px);background:rgba(255,255,255,.9)}
.step-icon{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;font-size:24px;box-shadow:0 8px 16px rgba(24,90,105,.12)}
.step-icon.listen{background:#47b9db}
.step-icon.think{background:#49b83f}
.step-icon.guess{background:#ff8a21;color:#fff;font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-weight:700;font-size:28px}
.step-icon.point{background:#825cc8}
.step-icon.learn{background:#1aa39c}
.playful-steps i{font-style:normal;font-family:"Fredoka","Trebuchet MS",Arial,sans-serif;font-size:16px;color:#ff6f3c;font-weight:700}
.playful-steps b{font-size:18px;color:var(--navy);font-weight:700}
.playful-steps p{margin:1px 0;color:#315d66;font-size:13px}

/* Learning */
.learning{background:linear-gradient(180deg,#edfaff 0%,#dcf5ff 100%)}
.learning-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.learning-grid article{border-radius:28px;padding:30px 23px 28px;text-align:center;border:2px solid rgba(255,255,255,.9);box-shadow:0 15px 34px rgba(22,80,111,.10);transition:.22s}
.learning-grid article:nth-child(1){background:linear-gradient(145deg,#e7f8ff,#d9f1ff)}
.learning-grid article:nth-child(2){background:linear-gradient(145deg,#eefbe8,#dcf5d2)}
.learning-grid article:nth-child(3){background:linear-gradient(145deg,#fff7d8,#ffefb8)}
.learning-grid article:nth-child(4){background:linear-gradient(145deg,#f7ebff,#ead7ff)}
.learning-grid article:hover{transform:translateY(-5px)}
.learning-icon{width:62px;height:62px;border-radius:20px;display:grid;place-items:center;margin:0 auto 12px;background:#fff;color:#087fc9;font-size:30px;box-shadow:0 8px 18px rgba(22,55,83,.10)}
.learning-grid h3{font-size:18px;color:var(--navy);margin:10px 0 8px;font-weight:700}
.learning-grid p{font-size:14px;color:#46667b;margin-bottom:0}
.perfect{margin-top:30px;background:#fff8d8;border:2px solid #f1cf66;border-radius:24px;padding:18px 25px;display:flex;align-items:center;justify-content:center;gap:13px 24px;flex-wrap:wrap;box-shadow:0 10px 24px rgba(121,91,20,.06)}
.perfect strong{color:var(--navy);font-size:20px;font-weight:700}
.perfect span{font-weight:850;font-size:13px}
.perfect span:before{content:"✓";color:#219653;margin-right:6px}

/* Sample */
.sample{background:#fffdf9}
.sample-box{position:relative;overflow:hidden;background:linear-gradient(120deg,#dff8ff 0%,#fff4bd 100%);border-radius:36px;padding:50px 54px;display:grid;grid-template-columns:1.45fr .55fr;align-items:center;gap:45px;box-shadow:0 20px 55px rgba(16,71,104,.10);border:2px solid rgba(255,255,255,.85)}
.sample-box:before{content:"★";position:absolute;right:34%;top:28px;font-size:42px;color:rgba(255,196,0,.22);transform:rotate(-10deg)}
.sample-box p{color:#4f6b7c;max-width:680px}
.sample-tags{display:flex;gap:9px;flex-wrap:wrap}
.sample-tags span{background:#fff;padding:9px 13px;border-radius:999px;font-size:12px;font-weight:850;box-shadow:0 5px 13px rgba(22,55,83,.06)}
.sample-action{text-align:center}
.sample-sheet{position:relative;margin:0 auto 18px;background:linear-gradient(160deg,#ef3131,#d81919);color:#fff;width:164px;min-height:170px;padding:22px 9px 27px;border-radius:24px 24px 42px 42px;display:flex;flex-direction:column;justify-content:center;line-height:1.02;box-shadow:0 14px 28px rgba(120,20,20,.18);font-family:"Fredoka","Trebuchet MS",Arial,sans-serif}
.sample-sheet small{font-size:19px;font-weight:700}
.sample-sheet b{color:#ffe34f;font-size:22px}
.sample-sheet strong{font-size:18px}
.sample-sheet em{position:absolute;right:14px;top:12px;font-style:normal;color:#ffe34f;font-size:18px}

/* Footer */
footer{background:#072f5b;color:#fff;padding:42px 0}
.footer-grid{display:grid;grid-template-columns:1fr auto auto;gap:35px;align-items:center}
.footer-brand{margin:0}
.footer-brand strong{color:#fff}
.footer-brand small{color:#b9dbf7}
.footer-brand .brand-mark{width:38px;height:38px}
.social-links{display:flex;gap:11px;align-items:center;justify-content:center}
.social-icon{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;color:#fff;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.06);transition:.2s;text-decoration:none}
.social-icon svg{width:22px;height:22px;display:block}
.social-icon:hover{transform:translateY(-3px);background:#fff;color:#082f5c;box-shadow:0 8px 18px rgba(0,0,0,.16)}
.footer-grid p{font-size:12px;color:#c9dbeb;margin:0}

@media(max-width:1000px){
  nav{display:none}
  .hero{background-size:auto 100%;background-position:70% center}
  .hero-overlay{background:linear-gradient(90deg,rgba(4,77,151,.94),rgba(5,103,188,.68) 54%,rgba(0,80,150,.12) 100%)}
  .hero-copy{width:60%}
  .book-grid,.learning-grid{grid-template-columns:repeat(2,1fr)}
  .cover-link{max-width:330px;height:440px}
  .how-playful{grid-template-columns:1fr;gap:38px}
  .how-intro{max-width:720px;margin:auto}
  .playful-steps{max-width:760px;width:100%;margin:auto}
  .sample-box{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;text-align:left}
  .social-links{justify-content:flex-start}
}

@media(max-width:680px){
  .wrap{width:min(100% - 28px,1180px)}
  .nav-wrap{min-height:72px}
  .brand strong{font-size:18px}
  .brand small{display:none}
  .nav-cta{display:none}
  .brand-mark{width:36px;height:36px;font-size:21px}
  .hero{min-height:660px;background-size:auto 100%;background-position:65% center}
  .hero-overlay{background:linear-gradient(180deg,rgba(5,77,147,.94) 0%,rgba(5,90,162,.88) 49%,rgba(4,72,132,.42) 74%,rgba(4,65,120,.16) 100%)}
  .hero-content{min-height:660px;align-items:flex-start}
  .hero-copy{width:100%;padding-top:74px;max-width:520px}
  .hero h1{font-size:50px;max-width:360px}
  .hero h2{font-size:30px;max-width:360px}
  .hero-text{font-size:16px;max-width:430px}
  .hero-actions{margin-top:22px}
  .hero-actions .button{width:100%;max-width:310px}
  .section{padding:66px 0}
  .book-grid,.learning-grid{grid-template-columns:1fr}
  .book-card{max-width:360px;margin:auto}
  .cover-link{max-width:330px;height:445px}
  .book-card p{min-height:0}
  .how-scene{padding:112px 22px 24px;min-height:300px}
  .book-emoji{left:24px;top:22px;bottom:auto;font-size:70px}
  .scene-tools{left:108px;top:35px}
  .playful-steps article{grid-template-columns:52px 38px 1fr;padding:11px 4px}
  .step-icon{width:42px;height:42px;font-size:21px}
  .sample-box{padding:34px 23px}
  .perfect{justify-content:flex-start}
  .section-head h2,.how h2,.sample h2{font-size:36px}
  .footer-grid{gap:22px}
}