/* ==========================================================================
   KitabZone design system
   Palette derived from the brand mark: navy book, orange pencil, slate lines.
   Signature: a 4px orange rule — the pencil — marks the start of every section.
   Accessibility note: brand orange #F07B24 is only 2.78:1 on white, so it is
   used for graphics/large display only. Text-on-colour uses navy or #C2570A.
   ========================================================================== */

:root{
  --navy-900:#16294D;
  --navy-700:#1C3563;
  --navy-500:#2E4E8A;
  --slate-300:#9FB0C9;
  --slate-100:#DCE3ED;
  --orange-500:#F07B24;
  --orange-700:#C2570A;
  --amber-400:#FDB913;
  --green-600:#22A24C;
  --red-600:#C62828;
  --ink:#0F1B33;
  --ink-60:#54627D;
  --paper:#FFFFFF;
  --mist:#F4F7FB;

  --r-sm:8px; --r:12px; --r-lg:18px; --r-xl:26px;
  --shadow-sm:0 1px 2px rgba(15,27,51,.06), 0 2px 8px rgba(15,27,51,.05);
  --shadow:0 4px 12px rgba(15,27,51,.08), 0 12px 32px rgba(15,27,51,.07);
  --shadow-lg:0 18px 48px rgba(15,27,51,.14);
  --wrap:1180px;
  --header-h:72px;

  --font-display:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-body:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--font-body); font-size:16px; line-height:1.6;
  overflow-x:hidden;
}
img{max-width:100%; height:auto; display:block}
a{color:var(--navy-500); text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-display); line-height:1.18; margin:0 0 .5em; color:var(--navy-900); letter-spacing:-.02em}
h1{font-size:clamp(1.9rem,4.4vw,3.1rem); font-weight:800}
h2{font-size:clamp(1.45rem,3vw,2.15rem); font-weight:800}
h3{font-size:1.1rem; font-weight:700}
p{margin:0 0 1em}
ul,ol{margin:0; padding:0; list-style:none}
:focus-visible{outline:3px solid var(--orange-500); outline-offset:2px; border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--navy-700);color:#fff;padding:12px 18px;z-index:100}
.skip-link:focus{left:8px;top:8px}
.wrap{width:100%; max-width:var(--wrap); margin:0 auto; padding:0 20px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  min-height:46px; padding:12px 22px; border-radius:var(--r);
  font-family:var(--font-body); font-size:.95rem; font-weight:600;
  border:1.5px solid transparent; cursor:pointer; text-align:center;
  transition:transform .12s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover{text-decoration:none; transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--navy-700); color:#fff; box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--navy-500); color:#fff}
.btn-accent{background:var(--orange-700); color:#fff}
.btn-accent:hover{background:#a94a08; color:#fff}
.btn-ghost{background:#fff; color:var(--navy-700); border-color:var(--slate-100)}
.btn-ghost:hover{border-color:var(--navy-500); background:var(--mist)}
.btn-light{background:rgba(255,255,255,.14); color:#fff; border-color:rgba(255,255,255,.4)}
.btn-light:hover{background:rgba(255,255,255,.24); color:#fff}
.btn-xl{min-height:56px; padding:16px 30px; font-size:1.03rem; width:100%}
.btn[disabled]{opacity:.55; cursor:not-allowed; transform:none}

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:50; background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(8px); border-bottom:1px solid var(--slate-100);
}
.header-inner{display:flex; align-items:center; gap:20px; min-height:var(--header-h)}
.brand{display:flex; align-items:center; flex:0 0 auto}
.brand img{height:44px; width:auto}
.brand-text{font-family:var(--font-display); font-weight:800; font-size:1.4rem; color:var(--navy-700); letter-spacing:-.03em}
.brand-text span{color:var(--orange-500)}
.brand-text.light{color:#fff}
.brand-text.light span{color:var(--amber-400)}

.main-nav{display:flex; align-items:center; gap:4px; margin-left:8px}
.main-nav > a, .nav-drop > button{
  display:inline-flex; align-items:center; gap:5px;
  padding:9px 13px; border-radius:var(--r-sm); border:0; background:none;
  font-family:var(--font-body); font-size:.93rem; font-weight:500; color:var(--ink); cursor:pointer;
}
.main-nav > a:hover, .nav-drop > button:hover{background:var(--mist); color:var(--navy-700); text-decoration:none}
.nav-drop{position:relative}
.nav-menu{
  position:absolute; top:calc(100% + 8px); left:0; min-width:210px; padding:10px;
  background:#fff; border:1px solid var(--slate-100); border-radius:var(--r-lg);
  box-shadow:var(--shadow); display:none; z-index:60;
}
.nav-drop.open .nav-menu{display:block}
.nav-menu-grid{grid-template-columns:repeat(2,1fr); gap:2px; min-width:260px}
.nav-drop.open .nav-menu-grid{display:grid}
.nav-menu a{display:block; padding:9px 12px; border-radius:var(--r-sm); color:var(--ink); font-size:.9rem}
.nav-menu a:hover{background:var(--mist); color:var(--navy-700); text-decoration:none}

.header-actions{display:flex; align-items:center; gap:10px; margin-left:auto}
.header-search{position:relative; display:flex}
.header-search input{
  width:190px; height:42px; padding:0 40px 0 15px; font-size:.9rem; font-family:var(--font-body);
  border:1.5px solid var(--slate-100); border-radius:999px; background:var(--mist); color:var(--ink);
  transition:width .18s ease;
}
.header-search input:focus{background:#fff; border-color:var(--navy-500); outline:none; width:230px}
.header-search input::placeholder{color:var(--ink-60)}
.header-search button{
  position:absolute; right:4px; top:4px; width:34px; height:34px; border:0; border-radius:50%;
  background:transparent; color:var(--navy-700); cursor:pointer; display:grid; place-items:center;
}
.icon-btn{
  position:relative; display:grid; place-items:center; width:44px; height:44px;
  border:1.5px solid var(--slate-100); border-radius:var(--r); background:#fff;
  color:var(--navy-700); cursor:pointer;
}
.icon-btn:hover{border-color:var(--navy-500); text-decoration:none}
.cart-badge{
  position:absolute; top:-6px; right:-6px; min-width:20px; height:20px; padding:0 5px;
  display:grid; place-items:center; border-radius:999px;
  background:var(--orange-700); color:#fff; font-size:.72rem; font-weight:700;
}
.cart-badge[data-count="0"]{display:none}
.menu-toggle{display:none}

/* drawer */
.drawer{
  padding:16px 20px 26px; border-top:1px solid var(--slate-100);
  background:#fff; max-height:calc(100vh - var(--header-h)); overflow-y:auto;
}
.drawer > a{display:block; padding:12px 4px; font-weight:500; color:var(--ink); border-bottom:1px solid var(--mist)}
.drawer-label{
  margin:18px 0 6px; font-size:.74rem; font-weight:700; letter-spacing:.11em;
  text-transform:uppercase; color:var(--ink-60);
}
.drawer-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:8px}
.drawer-grid a{
  padding:11px 8px; text-align:center; border:1.5px solid var(--slate-100);
  border-radius:var(--r-sm); font-size:.86rem; font-weight:600; color:var(--navy-700);
}
.drawer-search{display:flex; gap:8px; margin-bottom:8px}
.drawer-search input{
  flex:1; min-width:0; height:46px; padding:0 15px; border:1.5px solid var(--slate-100);
  border-radius:var(--r); font-family:var(--font-body); font-size:.95rem;
}
.drawer-search button{
  padding:0 18px; border:0; border-radius:var(--r); background:var(--navy-700);
  color:#fff; font-weight:600; font-family:var(--font-body); cursor:pointer;
}

/* ---------- sections + the pencil rule ---------- */
.section{padding:64px 0}
.section-mist{background:var(--mist)}
.section-head{margin-bottom:34px; max-width:640px}
.section-head.center{margin-left:auto; margin-right:auto; text-align:center}
.eyebrow{
  margin:0 0 10px; font-size:.74rem; font-weight:700; letter-spacing:.13em;
  text-transform:uppercase; color:var(--orange-700);
}
.rule-head{position:relative; padding-left:18px}
.rule-head::before{
  content:""; position:absolute; left:0; top:4px; bottom:4px; width:4px;
  border-radius:2px; background:linear-gradient(180deg,var(--amber-400) 0 14%,var(--orange-500) 14% 100%);
}
.section-head.center .rule-head{padding-left:0}
.section-head.center .rule-head::before{
  left:50%; transform:translateX(-50%); top:auto; bottom:-14px; height:4px; width:52px;
  background:linear-gradient(90deg,var(--amber-400) 0 14%,var(--orange-500) 14% 100%);
}
.section-head p{color:var(--ink-60); font-size:1.03rem; margin:14px 0 0}
.section-bar{display:flex; align-items:flex-end; justify-content:space-between; gap:20px; flex-wrap:wrap; margin-bottom:34px}
.section-bar .section-head{margin-bottom:0}
.section-bar .link-more{font-weight:600; color:var(--navy-700); white-space:nowrap}

/* ---------- hero ---------- */
.hero{
  position:relative; overflow:hidden;
  background:linear-gradient(160deg,var(--navy-900) 0%,var(--navy-700) 58%,#24437f 100%);
  color:#fff; padding:66px 0 74px;
}
.hero::after{
  content:""; position:absolute; right:-140px; top:-90px; width:460px; height:460px;
  border-radius:50%; background:radial-gradient(circle,rgba(240,123,36,.26),transparent 68%);
  pointer-events:none;
}
.hero-inner{position:relative; z-index:1; display:grid; grid-template-columns:1.15fr .85fr; gap:48px; align-items:center}
.hero h1{color:#fff; margin-bottom:18px}
.hero h1 em{font-style:normal; color:var(--amber-400)}
.hero-lead{font-size:1.1rem; color:rgba(255,255,255,.86); max-width:520px; margin-bottom:28px}
.hero-cta{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:26px}
.hero-cta .btn{min-height:54px; padding:15px 28px}
.hero-cta .btn-accent{box-shadow:0 8px 24px rgba(194,87,10,.4)}
.hero-points{display:flex; gap:22px; flex-wrap:wrap; font-size:.9rem; color:rgba(255,255,255,.8)}
.hero-points span{display:flex; align-items:center; gap:7px}
.hero-art{display:grid; place-items:center}
.hero-art img{max-width:340px; filter:drop-shadow(0 18px 40px rgba(0,0,0,.32))}

/* ---------- trust strip ---------- */
.trust{background:var(--mist); border-bottom:1px solid var(--slate-100); padding:36px 0}
.trust-grid{display:grid; grid-template-columns:repeat(6,1fr); gap:16px}
.trust-item{text-align:center; padding:8px}
.trust-item .ic{font-size:1.5rem; display:block; margin-bottom:8px}
.trust-item b{display:block; font-size:.88rem; color:var(--navy-900); font-weight:600; line-height:1.35}

/* ---------- class + subject tiles ---------- */
.class-grid{display:grid; grid-template-columns:repeat(5,1fr); gap:14px}
.class-tile{
  position:relative; display:block; padding:22px 16px 20px; background:#fff;
  border:1.5px solid var(--slate-100); border-radius:var(--r-lg); text-align:center;
  overflow:hidden; transition:transform .14s ease, border-color .14s ease, box-shadow .14s ease;
}
.class-tile::before{
  content:""; position:absolute; left:0; top:0; bottom:0; width:4px;
  background:var(--slate-100); transition:background .14s ease;
}
.class-tile:hover{transform:translateY(-3px); border-color:var(--navy-500); box-shadow:var(--shadow); text-decoration:none}
.class-tile:hover::before{background:var(--orange-500)}
.class-tile .num{
  display:block; font-family:var(--font-display); font-size:1.9rem; font-weight:800;
  color:var(--navy-700); line-height:1;
}
.class-tile .lbl{display:block; margin-top:6px; font-size:.82rem; color:var(--ink-60); font-weight:500}

.subject-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:14px}
.subject-tile{
  display:flex; align-items:center; gap:14px; padding:18px 20px; background:#fff;
  border:1.5px solid var(--slate-100); border-radius:var(--r-lg);
  transition:transform .14s ease, border-color .14s ease, box-shadow .14s ease;
}
.subject-tile:hover{transform:translateY(-3px); border-color:var(--navy-500); box-shadow:var(--shadow); text-decoration:none}
.subject-tile .ic{
  width:46px; height:46px; flex:0 0 auto; display:grid; place-items:center;
  border-radius:var(--r); background:var(--mist); font-size:1.35rem;
}
.subject-tile b{display:block; color:var(--navy-900); font-size:.98rem}
.subject-tile small{color:var(--ink-60); font-size:.82rem}

/* ---------- product cards ---------- */
.grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(248px,1fr)); gap:22px}
.card{
  display:flex; flex-direction:column; background:#fff; border:1.5px solid var(--slate-100);
  border-radius:var(--r-lg); overflow:hidden;
  transition:transform .14s ease, box-shadow .14s ease, border-color .14s ease;
}
.card:hover{transform:translateY(-4px); box-shadow:var(--shadow); border-color:var(--slate-300)}
.card-cover{
  position:relative; display:grid; place-items:center; aspect-ratio:3/4;
  background:linear-gradient(150deg,var(--mist),#e8eef7); overflow:hidden;
}
.card-cover img{width:100%; height:100%; object-fit:cover}
.cover-fallback{font-size:3.2rem; opacity:.5}
.badge-off{
  position:absolute; top:10px; right:10px; padding:5px 10px; border-radius:999px;
  background:var(--orange-700); color:#fff; font-size:.74rem; font-weight:700; letter-spacing:.02em;
}
.card-body{display:flex; flex-direction:column; flex:1; padding:16px 16px 18px}
.card-body .eyebrow{margin-bottom:7px; font-size:.68rem; color:var(--ink-60); letter-spacing:.1em}
.card-body h3{font-size:1rem; margin-bottom:8px; min-height:2.4em}
.card-body h3 a{color:var(--navy-900)}
.card-body h3 a:hover{color:var(--navy-500)}
.card-meta{font-size:.82rem; color:var(--ink-60); margin-bottom:12px}
.pill{
  display:inline-block; margin-top:7px; padding:3px 9px; border-radius:999px;
  background:rgba(240,123,36,.13); color:var(--orange-700); font-size:.72rem; font-weight:600;
}
.card-price{
  margin:auto 0 14px; display:flex; align-items:baseline; gap:9px;
  font-variant-numeric:tabular-nums;
}
.card-price strong{font-family:var(--font-display); font-size:1.4rem; font-weight:800; color:var(--navy-900)}
.card-price del{color:var(--ink-60); font-size:.92rem}
.card-actions{display:grid; grid-template-columns:1fr auto; gap:8px}
.card-actions .btn{padding:11px 14px; font-size:.88rem; min-height:44px}

/* ---------- filters ---------- */
.filter-bar{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-bottom:26px;
  padding:16px; background:var(--mist); border-radius:var(--r-lg);
}
.filter-bar select, .filter-bar input[type=search]{
  height:44px; padding:0 14px; font-family:var(--font-body); font-size:.92rem;
  border:1.5px solid var(--slate-100); border-radius:var(--r); background:#fff; color:var(--ink);
}
.filter-bar input[type=search]{flex:1; min-width:170px}
.filter-count{margin-left:auto; font-size:.88rem; color:var(--ink-60)}

/* ---------- breadcrumbs ---------- */
.crumbs{padding:16px 0 0; font-size:.85rem; color:var(--ink-60)}
.crumbs ol{display:flex; flex-wrap:wrap; gap:7px; align-items:center}
.crumbs li::after{content:"›"; margin-left:7px; color:var(--slate-300)}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--ink-60)}
.crumbs a:hover{color:var(--navy-700)}

/* ---------- product page ---------- */
.product-hero{display:grid; grid-template-columns:400px 1fr; gap:48px; padding:28px 0 56px; align-items:start}
.pd-cover{
  position:relative; border-radius:var(--r-xl); overflow:hidden; background:var(--mist);
  box-shadow:var(--shadow-lg); aspect-ratio:3/4; display:grid; place-items:center;
}
.pd-cover img{width:100%; height:100%; object-fit:cover}
.pd-cover .cover-fallback{font-size:5rem}
.pd-tags{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:14px}
.tag{
  padding:6px 13px; border-radius:999px; background:var(--mist);
  font-size:.8rem; font-weight:600; color:var(--navy-700);
}
.tag.accent{background:rgba(240,123,36,.13); color:var(--orange-700)}
.pd-lead{font-size:1.08rem; color:var(--ink-60); margin-bottom:24px}
.price-row{display:flex; align-items:baseline; gap:14px; flex-wrap:wrap; margin-bottom:6px; font-variant-numeric:tabular-nums}
.price-row .now{font-family:var(--font-display); font-size:2.5rem; font-weight:800; color:var(--navy-900)}
.price-row del{font-size:1.15rem; color:var(--ink-60)}
.price-row .off{
  padding:5px 12px; border-radius:999px; background:var(--green-600);
  color:#fff; font-size:.8rem; font-weight:700;
}
.save-line{color:var(--green-600); font-weight:600; font-size:.92rem; margin-bottom:22px}
.pd-buy{display:grid; gap:10px; max-width:400px; margin-bottom:22px}
.pd-checks{display:grid; gap:9px; margin-bottom:8px}
.pd-checks li{display:flex; align-items:flex-start; gap:10px; font-size:.93rem; color:var(--ink-60)}
.pd-checks .tick{color:var(--green-600); font-weight:700; flex:0 0 auto}
.prose{max-width:760px}
.prose h2{margin-top:40px}
.prose p{color:var(--ink-60)}
.prose ul.bullets{list-style:disc; padding-left:22px; margin-bottom:1em}
.prose ul.bullets li{color:var(--ink-60); margin-bottom:8px}
.spec-table{width:100%; border-collapse:collapse; margin:8px 0 24px; max-width:560px}
.spec-table th,.spec-table td{padding:12px 4px; text-align:left; border-bottom:1px solid var(--slate-100); font-size:.93rem}
.spec-table th{width:44%; color:var(--ink-60); font-weight:500}
.spec-table td{color:var(--navy-900); font-weight:600}

.buy-bar{
  position:fixed; left:0; right:0; bottom:0; z-index:45; display:none;
  align-items:center; gap:14px; padding:11px 16px calc(11px + env(safe-area-inset-bottom));
  background:#fff; border-top:1px solid var(--slate-100); box-shadow:0 -6px 24px rgba(15,27,51,.11);
}
.buy-bar .bb-price{font-family:var(--font-display); font-size:1.3rem; font-weight:800; color:var(--navy-900)}
.buy-bar .bb-price del{display:block; font-size:.8rem; font-weight:500; color:var(--ink-60); font-family:var(--font-body)}
.buy-bar .btn{flex:1; min-height:50px}

/* ---------- FAQ ---------- */
.faq{max-width:800px; margin:0 auto; display:grid; gap:12px}
.faq details{background:#fff; border:1.5px solid var(--slate-100); border-radius:var(--r-lg); overflow:hidden}
.faq details[open]{border-color:var(--slate-300); box-shadow:var(--shadow-sm)}
.faq summary{
  padding:18px 22px; font-weight:600; color:var(--navy-900); cursor:pointer;
  list-style:none; display:flex; justify-content:space-between; align-items:center; gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+"; font-size:1.4rem; color:var(--orange-500); font-weight:400; line-height:1}
.faq details[open] summary::after{content:"−"}
.faq .faq-body{padding:0 22px 20px; color:var(--ink-60)}
.faq .faq-body p:last-child{margin-bottom:0}

/* ---------- feature tiles ---------- */
.tiles{display:grid; grid-template-columns:repeat(auto-fit,minmax(232px,1fr)); gap:20px}
.tile{padding:26px 24px; background:#fff; border:1.5px solid var(--slate-100); border-radius:var(--r-lg)}
.tile .ic{
  width:48px; height:48px; display:grid; place-items:center; border-radius:var(--r);
  background:var(--mist); font-size:1.4rem; margin-bottom:16px;
}
.tile h3{margin-bottom:8px}
.tile p{color:var(--ink-60); font-size:.94rem; margin:0}

/* ---------- parent trust band ---------- */
.band{
  background:linear-gradient(150deg,var(--navy-900),var(--navy-700)); color:#fff;
  border-radius:var(--r-xl); padding:52px 46px; display:grid;
  grid-template-columns:1.2fr .8fr; gap:40px; align-items:center;
}
.band h2{color:#fff}
.band p{color:rgba(255,255,255,.84); margin-bottom:24px}
.band-stats{display:grid; gap:16px}
.band-stat{
  background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-lg); padding:18px 22px;
}
.band-stat b{display:block; font-family:var(--font-display); font-size:1.05rem; color:var(--amber-400)}
.band-stat small{color:rgba(255,255,255,.78); font-size:.86rem}

/* ---------- final CTA ---------- */
.cta-final{text-align:center; padding:64px 0}
.cta-final h2{margin-bottom:12px}
.cta-final p{color:var(--ink-60); max-width:520px; margin:0 auto 26px}

/* ---------- cart / checkout ---------- */
.page-head{padding:36px 0 10px}
.two-col{display:grid; grid-template-columns:1fr 380px; gap:36px; align-items:start; padding-bottom:64px}
.panel{background:#fff; border:1.5px solid var(--slate-100); border-radius:var(--r-lg); padding:24px}
.panel h2{font-size:1.15rem; margin-bottom:16px}
.summary-card{position:sticky; top:calc(var(--header-h) + 20px)}
.line{display:flex; justify-content:space-between; gap:16px; padding:9px 0; font-size:.95rem; font-variant-numeric:tabular-nums}
.line.total{
  border-top:2px solid var(--slate-100); margin-top:8px; padding-top:16px;
  font-family:var(--font-display); font-size:1.28rem; font-weight:800; color:var(--navy-900);
}
.line .off{color:var(--green-600); font-weight:600}
.cart-row{
  display:grid; grid-template-columns:72px 1fr auto; gap:16px; align-items:center;
  padding:16px 0; border-bottom:1px solid var(--slate-100);
}
.cart-row:last-child{border-bottom:0}
.cart-row .thumb{
  width:72px; aspect-ratio:3/4; border-radius:var(--r-sm); overflow:hidden;
  background:var(--mist); display:grid; place-items:center; font-size:1.5rem;
}
.cart-row .thumb img{width:100%; height:100%; object-fit:cover}
.cart-row h3{font-size:.98rem; margin-bottom:4px}
.cart-row small{color:var(--ink-60); font-size:.84rem}
.cart-row .rowprice{font-family:var(--font-display); font-weight:800; color:var(--navy-900); font-variant-numeric:tabular-nums}
.link-danger{
  background:none; border:0; padding:4px 0; color:var(--red-600);
  font-family:var(--font-body); font-size:.85rem; font-weight:500; cursor:pointer; text-decoration:underline;
}
.empty{text-align:center; padding:70px 20px}
.empty .ic{font-size:3rem; display:block; margin-bottom:16px; opacity:.5}
.empty p{color:var(--ink-60); margin-bottom:22px}

.coupon-form{display:flex; gap:8px; margin:4px 0 6px}
.coupon-form input{
  flex:1; min-width:0; height:46px; padding:0 14px; text-transform:uppercase;
  border:1.5px solid var(--slate-100); border-radius:var(--r);
  font-family:var(--font-body); font-size:.92rem; letter-spacing:.04em;
}
.coupon-applied{
  display:flex; justify-content:space-between; align-items:center; gap:12px;
  padding:12px 14px; border-radius:var(--r); background:rgba(34,162,76,.09);
  border:1px solid rgba(34,162,76,.3); font-size:.9rem;
}
.coupon-applied b{color:var(--green-600)}
.note{font-size:.85rem; color:var(--ink-60)}
.note.error{color:var(--red-600)}

/* forms */
.field{display:block; margin-bottom:16px}
.field > span{display:block; margin-bottom:7px; font-size:.88rem; font-weight:500; color:var(--navy-900)}
.field input, .field select, .field textarea{
  width:100%; min-height:48px; padding:12px 15px; font-family:var(--font-body); font-size:.97rem;
  border:1.5px solid var(--slate-100); border-radius:var(--r); background:#fff; color:var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus{border-color:var(--navy-500); outline:none}
.field textarea{min-height:120px; resize:vertical}
.field .hint{display:block; margin-top:6px; font-size:.82rem; color:var(--ink-60); font-weight:400}
.form-2{display:grid; grid-template-columns:1fr 1fr; gap:0 16px}
.trust-inline{display:grid; gap:10px; margin-top:18px}
.trust-inline li{display:flex; gap:9px; align-items:center; font-size:.88rem; color:var(--ink-60)}

/* ---------- thank you ---------- */
.thanks{max-width:640px; margin:0 auto; text-align:center; padding:56px 20px 72px}
.thanks .tick-circle{
  width:76px; height:76px; margin:0 auto 24px; border-radius:50%;
  background:rgba(34,162,76,.12); display:grid; place-items:center;
  font-size:2.1rem; color:var(--green-600);
}
.dl-list{display:grid; gap:12px; margin:28px 0; text-align:left}
.dl-item{
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  padding:18px 20px; background:#fff; border:1.5px solid var(--slate-100); border-radius:var(--r-lg);
}
.dl-item b{color:var(--navy-900)}
.dl-item small{display:block; color:var(--ink-60); font-size:.83rem; margin-top:3px}
.order-ref{
  display:inline-block; padding:8px 16px; border-radius:999px; background:var(--mist);
  font-size:.87rem; color:var(--ink-60); font-variant-numeric:tabular-nums;
}

/* ---------- static content pages ---------- */
.doc{max-width:760px; margin:0 auto; padding:36px 20px 72px}
.doc h1{margin-bottom:8px}
.doc .updated{color:var(--ink-60); font-size:.88rem; margin-bottom:32px}
.doc h2{font-size:1.25rem; margin-top:34px}
.doc p, .doc li{color:var(--ink-60)}
.doc ul.bullets{list-style:disc; padding-left:22px; margin-bottom:1em}
.doc ul.bullets li{margin-bottom:8px}
.doc a{text-decoration:underline}

/* ---------- toast ---------- */
.toast{
  position:fixed; left:50%; bottom:26px; transform:translate(-50%,160%);
  z-index:90; display:flex; align-items:center; gap:12px;
  padding:13px 20px; border-radius:999px; background:var(--navy-900); color:#fff;
  font-size:.91rem; font-weight:500; box-shadow:var(--shadow-lg);
  transition:transform .28s cubic-bezier(.2,.9,.3,1.2); max-width:calc(100vw - 32px);
}
.toast.show{transform:translate(-50%,0)}
.toast a{color:var(--amber-400); font-weight:600; text-decoration:underline}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-900); color:rgba(255,255,255,.74); padding:56px 0 0; margin-top:20px}
.footer-grid{display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:36px; padding-bottom:40px}
.footer-brand img{height:50px; width:auto; margin-bottom:16px; background:#fff; padding:8px 12px; border-radius:var(--r)}
.footer-brand p{font-size:.92rem; max-width:320px; margin:0}
.site-footer h3{color:#fff; font-size:.82rem; letter-spacing:.11em; text-transform:uppercase; margin-bottom:16px}
.site-footer ul li{margin-bottom:10px}
.site-footer a{color:rgba(255,255,255,.74); font-size:.92rem}
.site-footer a:hover{color:#fff}
.footer-base{
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  padding:20px 20px 26px; border-top:1px solid rgba(255,255,255,.12); font-size:.85rem;
}
.footer-base p{margin:0}

/* ==========================================================================
   Admin
   ========================================================================== */
.admin-body{background:var(--mist)}
.admin-header{background:var(--navy-900); color:#fff; position:sticky; top:0; z-index:50}
.admin-header .header-inner{min-height:64px}
.admin-header .admin-brand{font-family:var(--font-display); font-weight:800; color:#fff; font-size:1.05rem}
.admin-nav{display:flex; gap:4px; margin-left:22px; flex-wrap:wrap}
.admin-nav a{
  padding:8px 13px; border-radius:var(--r-sm); color:rgba(255,255,255,.76);
  font-size:.9rem; font-weight:500;
}
.admin-nav a:hover{background:rgba(255,255,255,.1); color:#fff; text-decoration:none}
.admin-nav a.on{background:rgba(255,255,255,.16); color:#fff}
.admin-main{padding:32px 0 64px}
.stat-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:16px; margin-bottom:32px}
.stat{background:#fff; border:1.5px solid var(--slate-100); border-radius:var(--r-lg); padding:20px 22px}
.stat small{display:block; color:var(--ink-60); font-size:.8rem; text-transform:uppercase; letter-spacing:.09em; font-weight:600; margin-bottom:8px}
.stat b{font-family:var(--font-display); font-size:1.9rem; font-weight:800; color:var(--navy-900); font-variant-numeric:tabular-nums}
.table-wrap{background:#fff; border:1.5px solid var(--slate-100); border-radius:var(--r-lg); overflow:hidden}
.table-wrap .thead{
  display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap;
  padding:18px 22px; border-bottom:1.5px solid var(--slate-100);
}
.table-wrap .thead h2{margin:0; font-size:1.05rem}
table.data{width:100%; border-collapse:collapse}
table.data th, table.data td{padding:14px 22px; text-align:left; font-size:.9rem; border-bottom:1px solid var(--slate-100)}
table.data th{background:var(--mist); color:var(--ink-60); font-weight:600; font-size:.78rem; text-transform:uppercase; letter-spacing:.07em}
table.data tr:last-child td{border-bottom:0}
table.data td.num{font-variant-numeric:tabular-nums; font-weight:600; color:var(--navy-900)}
.status{display:inline-block; padding:4px 11px; border-radius:999px; font-size:.75rem; font-weight:700; text-transform:uppercase; letter-spacing:.05em}
.status.paid{background:rgba(34,162,76,.13); color:#177a38}
.status.pending{background:rgba(253,185,19,.2); color:#8a6100}
.status.failed,.status.cancelled{background:rgba(198,40,40,.11); color:var(--red-600)}
.status.published{background:rgba(34,162,76,.13); color:#177a38}
.status.draft{background:var(--slate-100); color:var(--ink-60)}
.admin-actions{display:flex; gap:10px; align-items:center; flex-wrap:wrap}
.admin-actions form{margin:0}
.btn-sm{min-height:38px; padding:8px 14px; font-size:.85rem}
.form-card{background:#fff; border:1.5px solid var(--slate-100); border-radius:var(--r-lg); padding:26px; margin-bottom:20px}
.form-card > h2{
  font-size:.82rem; text-transform:uppercase; letter-spacing:.1em; color:var(--orange-700);
  margin-bottom:20px; padding-bottom:12px; border-bottom:1px solid var(--slate-100);
}
.admin-grid{display:grid; grid-template-columns:1fr 340px; gap:20px; align-items:start}
.login-shell{min-height:100vh; display:grid; place-items:center; padding:24px; background:var(--mist)}
.login-card{width:100%; max-width:400px; background:#fff; border:1.5px solid var(--slate-100); border-radius:var(--r-xl); padding:34px; box-shadow:var(--shadow)}
.login-card h1{font-size:1.5rem; margin-bottom:6px}
.login-card .sub{color:var(--ink-60); font-size:.92rem; margin-bottom:24px}
.alert{padding:13px 16px; border-radius:var(--r); font-size:.9rem; margin-bottom:18px}
.alert.error{background:rgba(198,40,40,.09); color:var(--red-600); border:1px solid rgba(198,40,40,.25)}
.alert.ok{background:rgba(34,162,76,.1); color:#177a38; border:1px solid rgba(34,162,76,.3)}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr; gap:36px}
  .hero-art{order:-1}
  .hero-art img{max-width:230px}
  .product-hero{grid-template-columns:320px 1fr; gap:32px}
  .two-col{grid-template-columns:1fr}
  .summary-card{position:static}
  .trust-grid{grid-template-columns:repeat(3,1fr)}
  .band{grid-template-columns:1fr; padding:38px 30px}
  .footer-grid{grid-template-columns:1fr 1fr; gap:28px}
  .admin-grid{grid-template-columns:1fr}
}

@media (max-width:860px){
  .main-nav, .header-search{display:none}
  .menu-toggle{display:grid}
  .header-inner{gap:12px}
  .section{padding:48px 0}
  .product-hero{grid-template-columns:1fr; gap:26px; padding-bottom:96px}
  .pd-cover{max-width:270px; margin:0 auto}
  .pd-buy{max-width:none}
  .buy-bar{display:flex}
  .grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:16px}
  table.data th, table.data td{padding:12px 14px}
}

@media (max-width:640px){
  body{font-size:15.5px}
  .wrap{padding:0 16px}
  .hero{padding:44px 0 52px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .class-grid{grid-template-columns:repeat(3,1fr); gap:10px}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .grid{grid-template-columns:repeat(2,1fr); gap:12px}
  .card-body{padding:12px 12px 14px}
  .card-body h3{font-size:.9rem; min-height:2.6em}
  .card-actions{grid-template-columns:1fr}
  .card-actions .btn-ghost{display:none}
  .card-price strong{font-size:1.2rem}
  .cart-row{grid-template-columns:56px 1fr; row-gap:8px}
  .cart-row .thumb{width:56px}
  .cart-row .rowprice{grid-column:2}
  .band{padding:30px 22px}
  .form-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr; gap:26px}
  .footer-base{flex-direction:column; gap:8px}
  .price-row .now{font-size:2rem}
  .table-scroll{overflow-x:auto}
  .table-scroll table.data{min-width:620px}
}

@media (max-width:380px){
  .grid{grid-template-columns:1fr}
  .class-grid{grid-template-columns:repeat(2,1fr)}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important; transition-duration:.01ms!important}
  .btn:hover,.card:hover,.class-tile:hover,.subject-tile:hover{transform:none}
}

@media print{
  .site-header,.site-footer,.buy-bar,.card-actions,.toast{display:none!important}
}


.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
}