:root{
  --navy:#17324D;
  --navy-dark:#10263A;
  --green:#315F51;
  --green-dark:#24483D;
  --gold:#D6A843;
  --cream:#FBF7EC;
  --paper:#FFFDF8;
  --ink:#27343A;
  --muted:#68747A;
  --line:#E7DFCF;
  --white:#FFFFFF;
  --shadow:0 16px 42px rgba(17,38,58,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 12% 0%,rgba(214,168,67,.10),transparent 30rem),
    var(--cream);
  line-height:1.58;
}
a{color:inherit}
img{max-width:100%}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;color:var(--navy-dark);line-height:1.12}
.wrap{width:min(1120px,calc(100% - 32px));margin:auto}
.site-header{
  position:sticky;top:0;z-index:30;background:rgba(255,253,248,.96);
  border-bottom:1px solid var(--line);backdrop-filter:blur(10px);
}
.nav{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;color:var(--navy)}
.brand img{width:50px;height:50px;object-fit:contain}
.brand span{font-family:Georgia,"Times New Roman",serif;font-size:21px}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{text-decoration:none;font-weight:700;font-size:14px;color:#40505B}
.nav-links a:hover,.nav-links a.active{color:var(--green)}
.nav-cta{background:var(--green);color:white!important;padding:10px 15px;border-radius:999px}
.mobile-toggle{display:none;background:none;border:0;font-size:25px}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.17em;text-transform:uppercase;color:var(--gold)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--green);color:white;text-decoration:none;font-weight:800;
  border:0;border-radius:11px;padding:13px 18px;cursor:pointer
}
.btn:hover{background:var(--green-dark)}
.btn-gold{background:var(--gold);color:#2d291f}
.btn-gold:hover{background:#c99a34}
.btn-light{background:white;color:var(--navy-dark)}
.section{padding:72px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 34px}
.section-head h2{font-size:clamp(31px,5vw,47px);margin:9px 0 10px}
.section-head p{color:var(--muted);margin:0}
.hero{
  padding:68px 0 58px;background:linear-gradient(160deg,rgba(23,50,77,.99),rgba(49,95,81,.96));color:white
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:50px;align-items:center}
.hero h1{color:white;font-size:clamp(46px,7vw,78px);margin:12px 0 18px;letter-spacing:-.035em}
.hero p{font-size:18px;color:rgba(255,255,255,.84);max-width:700px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-logo{width:min(420px,100%);display:block;margin:auto;filter:drop-shadow(0 18px 28px rgba(0,0,0,.18))}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
.card .icon{font-size:34px;margin-bottom:14px}
.card h3{font-size:23px;margin:0 0 8px}
.card p{color:var(--muted);margin:0}
.band{background:var(--navy-dark);color:white;border-radius:24px;padding:34px;text-align:center}
.band h2{color:white;margin:0 0 10px;font-size:36px}
.band p{color:rgba(255,255,255,.78);max-width:720px;margin:0 auto 22px}
.footer{background:#0D2234;color:rgba(255,255,255,.72);padding:34px 0;text-align:center}
.footer a{color:white}

/* Books */
.page-hero{text-align:center;padding:58px 0 34px}
.page-hero h1{font-size:clamp(42px,7vw,66px);margin:10px 0 14px}
.page-hero p{max-width:760px;margin:auto;color:var(--muted);font-size:18px}
.book-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:20px 0 68px}
.book-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow)}
.book-number{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--green);font-weight:800}
.book-card h2{font-size:31px;margin:7px 0 10px}
.book-card p{color:var(--muted)}
.book-meta{display:flex;gap:9px;flex-wrap:wrap;margin:18px 0}
.chip{border-radius:999px;background:#F1F5F2;border:1px solid #DCE8E1;padding:6px 10px;font-size:12px;font-weight:700;color:var(--green-dark)}
.coming{background:#F7F0DE;border-color:#E8D7A8;color:#87651A}

/* Detective Club landing page */
.club-page{background:radial-gradient(circle at 10% 0%,rgba(214,168,67,.14),transparent 31rem),radial-gradient(circle at 90% 18%,rgba(49,95,81,.08),transparent 28rem),var(--cream)}
.club-brand-header{background:rgba(255,253,248,.96);border-bottom:1px solid var(--line)}
.club-brand-inner{min-height:74px;display:flex;align-items:center;justify-content:center}
.club-brand-inner .brand img{width:52px;height:52px}
.club-hero{text-align:center;padding:55px 0 50px}
.club-hero-logo{width:min(250px,66vw);display:block;margin:0 auto 20px;filter:drop-shadow(0 14px 22px rgba(17,38,58,.10))}
.club-hero h1{font-size:clamp(42px,7vw,68px);letter-spacing:-.035em;margin:10px auto 16px}
.club-hero .lead{max-width:730px;margin:auto;color:#65727A;font-size:19px}
.club-pills{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:22px}
.club-pills span{background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:7px 13px;font-size:13px;font-weight:700}
.club-hero-cta{margin-top:27px}
.adult-note{background:var(--navy);color:white;border-radius:20px;padding:22px 26px;margin:0 auto 62px;max-width:910px;text-align:center;box-shadow:var(--shadow)}
.adult-note strong{color:#F2CC72}
.bonus-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-bottom:66px}
.bonus-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:29px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.bonus-card:before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:var(--gold)}
.bonus-card:nth-child(2):before{background:var(--green)}
.bonus-card:nth-child(3):before{background:var(--navy)}
.bonus-icon{width:70px;height:70px;border-radius:19px;display:grid;place-items:center;font-size:36px;background:#FFF5D9;margin-bottom:18px}
.bonus-card:nth-child(2) .bonus-icon{background:#EDF6F2}
.bonus-card:nth-child(3) .bonus-icon{background:#EEF2F6}
.bonus-label{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#B18329;font-weight:800}
.bonus-card h3{font-size:25px;margin:5px 0 10px}
.bonus-card p{color:var(--muted)}
.bonus-card ul{padding-left:20px;color:#566168;font-size:14px}
.why-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:66px}
.why-card{text-align:center;background:rgba(255,255,255,.66);border:1px solid var(--line);border-radius:18px;padding:22px 16px}
.why-icon{font-size:31px}
.why-card strong{display:block;margin:8px 0 4px;color:var(--navy)}
.why-card span{font-size:13px;color:var(--muted)}
.signup-shell{background:linear-gradient(145deg,#FFFDF8,#FFF8E9);border:2px solid rgba(214,168,67,.55);border-radius:28px;padding:40px 24px 28px;margin-bottom:56px;box-shadow:var(--shadow)}
.signup-copy{text-align:center;max-width:720px;margin:0 auto 24px}
.signup-copy h2{font-size:clamp(32px,5vw,46px);margin:8px 0}
.signup-copy p{color:var(--muted)}
.ml-holder{max-width:440px;margin:auto}
.privacy-note{text-align:center;color:#818B90;font-size:12px;max-width:650px;margin:16px auto 0}

/* Activity hub */
.case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin:28px 0 70px}
.case-file{
  position:relative;background:#EAD8AA;border:1px solid #D4BB78;border-radius:10px 10px 20px 20px;
  padding:34px 28px 28px;box-shadow:0 16px 34px rgba(59,48,25,.12);overflow:hidden
}
.case-file:before{
  content:"CASE FILE";position:absolute;top:0;left:24px;background:#D6BE80;color:#564922;
  padding:7px 14px;border-radius:0 0 9px 9px;font-size:11px;font-weight:900;letter-spacing:.14em
}
.case-file h2{font-size:29px;margin:20px 0 8px}
.case-file p{color:#665D49}
.case-status{display:inline-block;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:800;margin:8px 0 18px}
.open{background:#E7F1E9;color:#2E6744;border:1px solid #C8DFC9}
.locked{background:#F0E6CE;color:#7A5E21;border:1px solid #DFC989}
.code-row{display:flex;gap:9px;align-items:stretch;margin-top:12px}
.code-row input{flex:1;min-width:0;border:1px solid #BFA96E;border-radius:10px;padding:12px 13px;font:inherit;background:#FFFDF7}
.code-row button{white-space:nowrap}
.code-msg{font-size:12px;margin-top:8px;min-height:18px;color:#7B4A35}

/* Book activity pages */
.activity-hero{text-align:center;padding:50px 0 28px}
.activity-hero img{width:min(210px,58vw)}
.activity-hero h1{font-size:clamp(40px,6vw,61px);margin:10px 0 12px}
.activity-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:32px 0 62px}
.activity-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:27px;box-shadow:var(--shadow);display:flex;flex-direction:column;min-height:370px}
.activity-card .big-icon{font-size:38px}
.activity-card h2{font-size:25px;margin:13px 0 9px}
.activity-card p{color:var(--muted)}
.activity-card .btn{margin-top:auto}
.placeholder-note{background:#FFF8E9;border:1px solid #E8D7A8;border-radius:18px;padding:24px;text-align:center;margin:24px 0 56px;color:#735A27}

/* Modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(10,25,37,.66);display:none;align-items:center;justify-content:center;padding:18px;z-index:100}
.modal-backdrop.open{display:flex}
.modal-card{background:var(--paper);border-radius:22px;width:min(520px,100%);max-height:90vh;overflow:auto;padding:26px;box-shadow:0 24px 80px rgba(0,0,0,.28);position:relative}
.modal-close{position:absolute;right:14px;top:10px;border:0;background:transparent;font-size:28px;cursor:pointer;color:#67737A}
.modal-card h2{font-size:32px;margin:4px 35px 10px 0}

/* Responsive */
@media(max-width:860px){
  .hero-grid,.cards,.book-grid,.bonus-grid,.activity-grid,.case-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:720px){
  .nav-links{display:none}
  .mobile-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:70px;left:0;right:0;background:var(--paper);padding:18px 24px;flex-direction:column;border-bottom:1px solid var(--line)}
  .code-row{flex-direction:column}
}
@media(max-width:520px){
  .why-grid{grid-template-columns:1fr}
  .signup-shell{padding:28px 10px 20px}
}