:root{
  --ink:#1B2A4A;
  --ink-2:#233457;
  --paper:#F7F3E8;
  --paper-2:#EFE9D8;
  --pen:#C7402F;
  --pen-2:#A6321F;
  --highlighter:#FFD934;
  --sage:#6F8F63;
  --charcoal:#242220;
  --line:rgba(36,34,32,0.14);
  --shadow: 0 18px 40px rgba(27,42,74,0.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--charcoal);
  font-family:'Space Grotesk', sans-serif;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.display{
  font-family:'Fraunces', serif;
  font-weight:700;
  color:var(--ink);
  margin:0;
  letter-spacing:-0.01em;
}
.note{font-family:'Caveat', cursive; font-weight:700; color:var(--pen);}
a{color:inherit; text-decoration:none;}
img,svg{display:block; max-width:100%;}
.wrap{max-width:1120px; margin:0 auto; padding:0 24px;}
.eyebrow{
  font-size:13px; letter-spacing:0.14em; text-transform:uppercase; color:var(--pen);
  font-weight:700; margin-bottom:10px; display:inline-block;
}
a:focus-visible, button:focus-visible, input:focus-visible{
  outline:3px solid var(--ink); outline-offset:2px;
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; transition-duration:0.001ms !important;}
}

/* ===== NAV ===== */
header{
  position:sticky; top:0; z-index:50;
  background:rgba(247,243,232,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 24px; max-width:1120px; margin:0 auto;
}
.logo{
  font-family:'Fraunces', serif; font-weight:700; font-size:22px; color:var(--ink);
  display:flex; align-items:center; gap:8px;
}
.logo .dot{color:var(--pen);}
.nav-links{display:flex; gap:32px; font-size:15px; font-weight:500;}
.nav-links a{opacity:0.8; transition:opacity .15s;}
.nav-links a.current{opacity:1; text-decoration:underline; text-decoration-color:var(--highlighter); text-decoration-thickness:3px; text-underline-offset:4px;}
.nav-links a:hover{opacity:1; text-decoration:underline; text-decoration-color:var(--highlighter); text-decoration-thickness:3px; text-underline-offset:4px;}
.nav-cta{
  background:var(--ink); color:var(--paper); padding:10px 20px; border-radius:6px;
  font-weight:600; font-size:14px; border:none; cursor:pointer;
}
.nav-cta:hover{background:var(--ink-2);}

/* ===== SALE BAR ===== */
.salebar{background:var(--ink); color:var(--paper); text-align:center; padding:10px 16px; font-size:14px; font-weight:600;}
.salebar span.hl{color:var(--highlighter);}
#countdown{font-variant-numeric:tabular-nums; font-weight:700;}

/* ===== BUTTONS ===== */
.btn-primary{
  background:var(--pen); color:#fff; padding:15px 26px; border-radius:8px;
  font-weight:700; font-size:16px; border:none; cursor:pointer; box-shadow:var(--shadow);
  transition:transform .15s ease; display:inline-block;
}
.btn-primary:hover{transform:translateY(-2px);}
.btn-ghost{
  padding:15px 22px; font-weight:600; font-size:15px; border:2px solid var(--ink); border-radius:8px;
  background:transparent; cursor:pointer; color:var(--ink); display:inline-block;
}

/* ===== HERO ===== */
.hero{padding:72px 24px 60px; position:relative; overflow:hidden;}
.hero-grid{max-width:1120px; margin:0 auto; display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center;}
.hero h1{font-size:clamp(34px,5vw,54px); line-height:1.08;}
.hero h1 em{font-style:italic; color:var(--pen);}
.hero p.lede{font-size:19px; color:#4a473f; max-width:480px; margin:20px 0 28px;}
.hero-ctas{display:flex; gap:14px; align-items:center; flex-wrap:wrap;}
.hero-stats{display:flex; gap:28px; margin-top:34px; font-size:14px; color:#5b584d; flex-wrap:wrap;}
.hero-stats b{display:block; font-family:'Fraunces',serif; font-size:22px; color:var(--ink);}

.hero-visual{position:relative; display:flex; justify-content:center;}
.book-stack{position:relative; width:280px; height:360px;}
.book{
  position:absolute; width:230px; height:320px; border-radius:6px 10px 10px 6px;
  box-shadow:0 20px 40px rgba(27,42,74,0.25);
  background:linear-gradient(135deg, var(--ink), var(--ink-2));
  color:var(--paper); padding:26px 22px; display:flex; flex-direction:column; justify-content:space-between;
}
.book.b1{transform:rotate(-7deg); top:10px; left:0; z-index:1; opacity:0.55; background:linear-gradient(135deg,#3a4a70,#2b3a5e);}
.book.b2{transform:rotate(4deg); top:0; left:30px; z-index:2;}
.book-title{font-family:'Fraunces',serif; font-weight:600; font-size:19px; line-height:1.25;}
.book-sub{font-size:12px; opacity:0.75; text-transform:uppercase; letter-spacing:0.08em;}
.stamp{
  position:absolute; top:-18px; right:-28px; z-index:3; width:96px; height:96px; border-radius:50%;
  border:4px solid var(--pen); color:var(--pen); display:flex; align-items:center; justify-content:center;
  flex-direction:column; transform:rotate(14deg); font-family:'Fraunces',serif; font-weight:700;
  background:rgba(247,243,232,0.9);
}
.stamp .big{font-size:26px; line-height:1;}
.stamp .small{font-size:10px; letter-spacing:0.08em;}
.margin-note{position:absolute; font-size:20px; transform:rotate(-4deg);}
.mn1{bottom:6px; left:-30px; color:var(--sage);}

/* ===== SECTION HEAD ===== */
.section-head{text-align:center; max-width:620px; margin:0 auto 48px;}
.section-head h2{font-size:clamp(28px,3.6vw,40px);}
.section-head p{color:#5b584d; margin-top:12px; font-size:17px;}

/* ===== PAIN POINTS ===== */
.pain{padding:88px 0 60px;}
.pain-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.pain-card{background:#fff; border:1px solid var(--line); border-radius:12px; padding:28px; position:relative;}
.pain-card .old-price{font-family:'Fraunces',serif; text-decoration:line-through; text-decoration-color:var(--pen); color:#8b8779; font-size:15px;}
.pain-card h3{font-size:19px; margin:10px 0 8px;}
.pain-card p{color:#5b584d; font-size:15px; margin:0;}
.pain-card .circle{position:absolute; top:16px; right:16px; width:28px; height:28px; border-radius:50%; border:2.5px solid var(--pen); opacity:0.8;}

/* ===== HOW IT WORKS ===== */
.how{background:var(--ink); color:var(--paper); padding:88px 0;}
.how .section-head h2, .how .section-head p{color:var(--paper);}
.how .section-head p{color:rgba(247,243,232,0.7);}
.steps{display:grid; grid-template-columns:repeat(3,1fr); gap:28px;}
.step{background:rgba(247,243,232,0.06); border:1px solid rgba(247,243,232,0.14); border-radius:14px; padding:30px;}
.step .num{font-family:'Fraunces',serif; font-size:15px; color:var(--highlighter); font-weight:700; margin-bottom:14px;}
.step h3{color:var(--paper); font-size:20px; margin-bottom:10px;}
.step p{color:rgba(247,243,232,0.72); font-size:15px; margin:0;}

/* ===== SUBJECTS ===== */
.cats{padding:88px 0;}
.cat-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
.cat-tab{
  background:#fff; border:1px solid var(--line); border-radius:12px; padding:30px 24px;
  transition:transform .15s, box-shadow .15s; border-top:6px solid var(--sage); display:block;
}
.cat-tab.science{border-top-color:var(--sage);}
.cat-tab.maths{border-top-color:var(--pen);}
.cat-tab.language{border-top-color:var(--highlighter);}
.cat-tab:hover{transform:translateY(-4px); box-shadow:var(--shadow);}
.cat-tab h3{font-size:21px; margin-bottom:6px;}
.cat-tab p{margin:0 0 14px; font-size:14px; color:#7a7669;}
.cat-tab .cat-link{font-size:14px; font-weight:700; color:var(--pen);}

/* ===== BOOK GRID (books.html) ===== */
.subject-block{padding:64px 0; border-bottom:1px solid var(--line);}
.subject-block:last-of-type{border-bottom:none;}
.subject-head{display:flex; align-items:baseline; justify-content:space-between; margin-bottom:32px; flex-wrap:wrap; gap:10px;}
.subject-head h2{font-size:28px;}
.subject-head span{font-size:14px; color:#7a7669;}
.book-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
.book-card{
  background:#fff; border:1px solid var(--line); border-radius:14px; padding:0; overflow:hidden;
  display:flex; flex-direction:column;
}
.book-cover{
  height:150px; background:linear-gradient(135deg, var(--ink), var(--ink-2)); color:var(--paper);
  padding:20px; display:flex; flex-direction:column; justify-content:space-between; position:relative;
}
.book-cover .book-sub{font-size:11px;}
.book-cover .book-title{font-size:17px;}
.book-cover .mini-stamp{
  position:absolute; top:12px; right:12px; width:40px; height:40px; border-radius:50%; border:2px solid var(--highlighter);
  color:var(--highlighter); display:flex; align-items:center; justify-content:center; font-size:10px; font-weight:700;
  transform:rotate(10deg);
}
.book-info{padding:20px; display:flex; flex-direction:column; gap:10px; flex:1;}
.book-info h3{font-size:16px;}
.book-info p{margin:0; font-size:13.5px; color:#5b584d; flex:1;}
.book-price-row{display:flex; align-items:baseline; gap:8px;}
.book-price-row .now{font-family:'Fraunces',serif; font-weight:700; font-size:20px; color:var(--ink);}
.book-price-row .was{font-size:13px; color:#9a9689; text-decoration:line-through;}
.book-info .btn-primary{width:100%; text-align:center; padding:11px 18px; font-size:14px;}

/* ===== PRICING (index.html) ===== */
.pricing{background:var(--paper-2); padding:88px 0;}
.price-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px; align-items:stretch;}
.price-card{background:#fff; border-radius:16px; padding:32px 28px; border:1px solid var(--line); display:flex; flex-direction:column;}
.price-card.featured{border:2px solid var(--pen); box-shadow:var(--shadow); position:relative; transform:scale(1.03);}
.badge-best{
  position:absolute; top:-14px; left:50%; transform:translateX(-50%); background:var(--pen); color:#fff;
  font-size:12px; font-weight:700; padding:6px 14px; border-radius:20px; letter-spacing:0.05em; text-transform:uppercase;
}
.price-card h3{font-size:20px; margin-bottom:6px;}
.price-row{display:flex; align-items:baseline; gap:10px; margin:14px 0 6px;}
.price-now{font-family:'Fraunces',serif; font-size:38px; color:var(--ink); font-weight:700;}
.price-was{font-size:16px; color:#9a9689; text-decoration:line-through;}
.price-card ul{list-style:none; padding:0; margin:18px 0 26px; flex:1;}
.price-card li{padding:7px 0; font-size:14.5px; color:#4a473f; display:flex; gap:10px;}
.price-card li::before{content:"✓"; color:var(--sage); font-weight:700;}
.price-card .btn-primary, .price-card .btn-ghost{width:100%; text-align:center;}

/* ===== SOCIAL PROOF ===== */
.proof{padding:88px 0;}
.stat-bar{display:flex; justify-content:space-around; text-align:center; margin-bottom:56px; flex-wrap:wrap; gap:24px;}
.stat b{font-family:'Fraunces',serif; font-size:34px; color:var(--ink); display:block;}
.stat span{font-size:13px; color:#7a7669; text-transform:uppercase; letter-spacing:0.06em;}
.testi-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:22px;}
.testi{background:#fff; border:1px solid var(--line); border-radius:12px; padding:24px; position:relative;}
.testi .grade-stamp{
  position:absolute; top:-12px; right:14px; background:var(--sage); color:#fff; font-family:'Fraunces',serif;
  font-weight:700; font-size:13px; padding:5px 12px; border-radius:20px; transform:rotate(-4deg);
}
.testi p{font-size:15px; color:#3a382f; margin:8px 0 16px;}
.testi footer{font-size:13px; color:#8b8779; font-weight:600;}

/* ===== CHECKOUT PAGE ===== */
.checkout-page{padding:56px 0 96px;}
.checkout-layout{display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:start;}
.order-summary{background:var(--ink); color:var(--paper); border-radius:16px; padding:32px;}
.order-summary h3{color:var(--paper); font-size:20px; margin-bottom:18px;}
.order-line{display:flex; gap:16px; align-items:center; padding:14px 0; border-bottom:1px solid rgba(247,243,232,0.14);}
.order-line .mini-cover{
  width:52px; height:64px; border-radius:4px; background:linear-gradient(135deg,#3a4a70,#2b3a5e); flex-shrink:0;
}
.order-line .details{flex:1;}
.order-line .details b{display:block; font-size:14.5px;}
.order-line .details span{font-size:12.5px; color:rgba(247,243,232,0.6);}
.order-total-row{display:flex; justify-content:space-between; padding-top:18px; font-family:'Fraunces',serif; font-size:22px; font-weight:700;}
.order-total-row span:last-child{color:var(--highlighter);}
.guarantee-note{font-size:13px; color:rgba(247,243,232,0.65); margin-top:16px;}

.checkout-card{background:#fff; border-radius:16px; padding:32px; border:1px solid var(--line); box-shadow:var(--shadow);}
.pay-tabs{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:22px;}
.pay-tab{
  flex:1; min-width:100px; padding:12px 10px; border-radius:8px; border:1.5px solid var(--line);
  background:#fff; cursor:pointer; font-size:13px; font-weight:600; text-align:center; color:#4a473f;
  transition:border-color .15s, background .15s;
}
.pay-tab.active{border-color:var(--pen); background:rgba(199,64,47,0.07); color:var(--pen);}
.pay-panel{display:none;}
.pay-panel.active{display:block;}
.field{margin-bottom:14px;}
.field label{display:block; font-size:12.5px; font-weight:600; margin-bottom:6px; color:#5b584d;}
.field input{width:100%; padding:12px 14px; border-radius:8px; border:1.5px solid var(--line); font-size:14px; font-family:'Space Grotesk', sans-serif; background:#fff;}
.field-row{display:flex; gap:12px;}
.field-row .field{flex:1;}
.redirect-note{font-size:13px; color:#7a7669; background:var(--paper-2); border-radius:8px; padding:14px; margin-bottom:16px;}
.back-link{display:inline-block; margin-bottom:24px; font-size:14px; font-weight:600; color:var(--pen);}

/* ===== FAQ ===== */
.faq{padding:88px 0; max-width:760px; margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%; text-align:left; background:none; border:none; padding:20px 4px; cursor:pointer;
  font-family:'Fraunces',serif; font-size:18px; color:var(--ink); display:flex; justify-content:space-between; align-items:center;
}
.faq-q .plus{transition:transform .2s; font-size:22px; color:var(--pen);}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-a{max-height:0; overflow:hidden; transition:max-height .25s ease;}
.faq-a p{padding:0 4px 20px; color:#5b584d; font-size:15px; margin:0;}

/* ===== FOOTER ===== */
footer.site-footer{background:var(--charcoal); color:rgba(247,243,232,0.8); padding:48px 0 24px; font-size:14px;}
.foot-grid{display:flex; justify-content:space-between; flex-wrap:wrap; gap:32px; margin-bottom:32px;}
.foot-grid h4{color:var(--paper); font-family:'Fraunces',serif; margin-bottom:12px; font-size:16px;}
.foot-grid a{display:block; opacity:0.7; padding:4px 0;}
.foot-grid a:hover{opacity:1;}
.foot-bottom{border-top:1px solid rgba(247,243,232,0.12); padding-top:20px; text-align:center; font-size:13px; opacity:0.6;}

@media (max-width:860px){
  .nav-links{display:none;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{order:-1; margin-bottom:20px;}
  .pain-grid, .steps, .cat-grid, .price-grid, .testi-grid, .book-grid{grid-template-columns:1fr;}
  .price-card.featured{transform:none;}
  .field-row{flex-direction:column;}
  .checkout-layout{grid-template-columns:1fr;}
}