:root{
  --green:#0b3d26; --green-2:#14532f; --green-soft:#e7efe9;
  --gold:#c9a227; --gold-2:#a8841a; --gold-soft:#f6edd2;
  --cream:#faf7f0; --paper:#ffffff; --ink:#1d2a24; --muted:#5b6b63; --line:#e3ddcf;
  --radius:14px; --shadow:0 10px 30px rgba(11,61,38,.10);
  --serif:"Libre Caslon Text",Georgia,"Times New Roman",serif;
  --sans:"Source Sans 3",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font:17px/1.65 var(--sans);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--green-2)}
a:hover{color:var(--gold-2)}
h1,h2,h3{font-family:var(--serif);color:var(--green);line-height:1.2;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(2rem,4.6vw,3.3rem)}
h2{font-size:clamp(1.6rem,3vw,2.2rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
.container{width:min(1160px,100% - 32px);margin-inline:auto}
.eyebrow{font:600 .78rem/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--gold-2);margin-bottom:.9rem;display:block}
.lead{font-size:1.15rem;color:var(--muted);max-width:640px}
.muted{color:var(--muted)}
.center{text-align:center}
.center .lead{margin-inline:auto}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:#fff;padding:8px 12px;z-index:99}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.35rem;border-radius:999px;font:600 1rem/1 var(--sans);text-decoration:none;border:2px solid transparent;cursor:pointer;transition:.18s}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-2);color:#fff}
.btn-gold{background:var(--gold);color:var(--green)}
.btn-gold:hover{background:#d8b33c;color:var(--green)}
.btn-outline{border-color:var(--green);color:var(--green);background:transparent}
.btn-outline:hover{background:var(--green);color:#fff}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn-row{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.4rem}

/* preview banner */
.preview-bar{background:var(--gold-soft);color:#6b5413;font-size:.85rem;text-align:center;padding:.45rem 16px;border-bottom:1px solid #ecd9a0}

/* header */
.site-header{background:rgba(250,247,240,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:78px}
.brand img{height:58px;width:auto}
.menu{display:flex;align-items:center;gap:1.6rem;list-style:none;margin:0;padding:0}
.menu a{text-decoration:none;color:var(--ink);font-weight:600;font-size:.98rem;padding:.4rem 0;border-bottom:2px solid transparent}
.menu a:hover,.menu a[aria-current=page]{color:var(--green);border-bottom-color:var(--gold)}
.cart-link{display:inline-flex;align-items:center;gap:.4rem}
.cart-count{background:var(--green);color:#fff;border-radius:999px;font-size:.72rem;min-width:20px;height:20px;display:inline-grid;place-items:center;padding:0 5px}
.menu-toggle{display:none;background:none;border:0;padding:8px;cursor:pointer;color:var(--green)}
@media (max-width:900px){
  .menu-toggle{display:block}
  .menu{display:none;position:absolute;left:0;right:0;top:100%;background:var(--cream);flex-direction:column;align-items:flex-start;gap:0;padding:8px 16px 16px;border-bottom:1px solid var(--line)}
  .menu.open{display:flex}
  .menu li{width:100%}
  .menu a{display:block;padding:.75rem 0;border-bottom:1px solid var(--line)}
  .brand img{height:48px}
}

/* sections */
.section{padding:clamp(56px,8vw,96px) 0}
.section-alt{background:var(--paper);border-block:1px solid var(--line)}
.section-green{background:var(--green);color:#e9efe9}
.section-green h2,.section-green h3{color:#fff}
.section-green .lead{color:#cfdcd3}
.section-head{margin-bottom:2.4rem}

/* hero */
.hero{padding:clamp(48px,7vw,88px) 0;background:radial-gradient(1200px 500px at 85% 10%,#efe6cc 0,transparent 60%),var(--cream)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.hero-art{position:relative;min-height:420px}
.hero-art img{position:absolute;width:52%;border-radius:8px;box-shadow:0 22px 50px rgba(11,61,38,.25)}
.hero-art img:nth-child(1){left:0;top:40px;transform:rotate(-6deg)}
.hero-art img:nth-child(2){left:24%;top:0;z-index:2}
.hero-art img:nth-child(3){right:0;top:50px;transform:rotate(6deg)}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero-art{min-height:340px}}

/* grids & cards */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:980px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 1px 0 rgba(0,0,0,.02)}
.card h3{margin-bottom:.35em}
.feature-icon{width:46px;height:46px;border-radius:12px;background:var(--green-soft);color:var(--green);display:grid;place-items:center;margin-bottom:14px}
.model-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.model-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.model-card .thumb{background:#efe9db;padding:22px 22px 0;aspect-ratio:4/4.2;display:flex;align-items:flex-end;justify-content:center;overflow:hidden}
.model-card .thumb img{width:78%;box-shadow:0 12px 28px rgba(0,0,0,.18);border-radius:4px 4px 0 0}
.model-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:.4rem;flex:1}
.model-card h3{font-size:1.15rem;margin:0}
.model-card p{font-size:.95rem;color:var(--muted);margin:0}
.tag{display:inline-block;font:600 .72rem/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--green);background:var(--green-soft);padding:.35rem .55rem;border-radius:6px}
.tag-gold{background:var(--gold-soft);color:#7a5e10}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding-top:56px}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:0;left:0;width:42px;height:42px;border-radius:50%;background:var(--gold);color:var(--green);font:700 1.1rem/42px var(--serif);text-align:center}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* styles strip */
.styles-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.styles-strip figure{margin:0;text-align:center}
.styles-strip img{border-radius:6px;box-shadow:var(--shadow);margin:0 auto 12px;width:80%}
.styles-strip figcaption strong{display:block;font-family:var(--serif);color:var(--green);font-size:1.15rem}
@media (max-width:620px){.styles-strip{grid-template-columns:1fr}}

/* split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.shadow-img{border-radius:10px;box-shadow:var(--shadow);border:1px solid var(--line)}
.check-list{list-style:none;padding:0;margin:0 0 1rem}
.check-list li{padding-left:1.8rem;position:relative;margin:.45rem 0}
.check-list li::before{content:"";position:absolute;left:0;top:.45em;width:1.05rem;height:1.05rem;border-radius:50%;background:var(--gold-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%230b3d26' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") center/80% no-repeat}

/* page header */
.page-head{padding:56px 0 40px;background:linear-gradient(180deg,#f3ecda,var(--cream));border-bottom:1px solid var(--line)}
.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:.6rem}
.breadcrumb a{color:var(--muted)}

/* shop */
.shop-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-bottom:28px}
.filters{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:.45rem .9rem;font:600 .9rem var(--sans);color:var(--ink);cursor:pointer}
.chip[aria-pressed=true]{background:var(--green);border-color:var(--green);color:#fff}
.search{border:1px solid var(--line);border-radius:999px;padding:.55rem 1rem;font:inherit;min-width:220px;background:var(--paper)}
.product-card .thumb{aspect-ratio:3/4;background:#efe9db;display:grid;place-items:center;overflow:hidden}
.product-card .thumb img{width:100%;height:100%;object-fit:cover}
.price{font:700 1.15rem var(--serif);color:var(--green)}
.empty{border:2px dashed var(--line);border-radius:var(--radius);padding:56px 24px;text-align:center;background:var(--paper)}
.empty h3{margin-bottom:.4em}
.product-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
@media (max-width:860px){.product-layout{grid-template-columns:1fr}}
.gallery-main{background:#efe9db;border-radius:var(--radius);overflow:hidden}
.gallery-thumbs{display:flex;gap:10px;margin-top:10px}
.gallery-thumbs button{border:2px solid transparent;border-radius:8px;padding:0;width:72px;cursor:pointer;background:none;overflow:hidden}
.gallery-thumbs button[aria-current=true]{border-color:var(--gold)}
.spec-list{display:grid;grid-template-columns:auto 1fr;gap:.35rem 1.2rem;font-size:.95rem;margin:1.2rem 0}
.spec-list dt{color:var(--muted)}
.spec-list dd{margin:0}
.qty{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:var(--paper)}
.qty button{border:0;background:none;width:38px;font-size:1.1rem;cursor:pointer}
.qty input{width:48px;border:0;text-align:center;font:inherit;background:transparent}
.cart-table{width:100%;border-collapse:collapse;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.cart-table th,.cart-table td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.cart-table th{font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.cart-summary{margin-left:auto;max-width:380px}
.notice{background:var(--gold-soft);border:1px solid #ecd9a0;border-radius:10px;padding:14px 16px;font-size:.95rem;color:#5d4810}

/* forms */
.form{display:grid;gap:16px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:620px){.form .row{grid-template-columns:1fr}}
.form label{font-weight:600;font-size:.92rem;display:grid;gap:6px}
.form input,.form select,.form textarea{font:inherit;padding:.7rem .85rem;border:1px solid #d6cfbf;border-radius:10px;background:#fff;color:var(--ink)}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--gold);border-color:var(--gold)}
.form textarea{min-height:130px;resize:vertical}
.form-status{font-size:.95rem}

/* cta band */
.cta-band{background:var(--green);border-radius:22px;padding:clamp(32px,5vw,56px);color:#dfe8e1;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;position:relative;overflow:hidden}
.cta-band h2{color:#fff;margin:0 0 .3em}
.cta-band p{margin:0;max-width:560px}

/* footer */
.site-footer{background:#082c1c;color:#b9c8bf;padding:56px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-grid h4{color:#fff;font:600 .8rem/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;margin:0 0 14px}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin:.4rem 0}
.footer-grid a{color:#d7e2db;text-decoration:none}
.footer-grid a:hover{color:var(--gold)}
.footer-logo{height:92px;width:auto;margin-bottom:12px}
.footer-bottom{border-top:1px solid #1f4a35;margin-top:36px;padding-top:20px;font-size:.85rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
@media (max-width:860px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr}}
.cart-count[hidden],[hidden]{display:none!important}
.cart-label{display:none}
@media (max-width:900px){.cart-label{display:inline}}
.viewer{position:fixed;inset:0;background:rgba(10,25,18,.82);z-index:100;display:grid;place-items:center;padding:16px}
.viewer-box{background:var(--cream);border-radius:16px;max-width:900px;width:100%;max-height:96vh;display:flex;flex-direction:column;overflow:hidden}
.viewer-top{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line)}
.viewer-top span{color:var(--muted);font-size:.9rem;margin-left:auto}
.viewer-close{border:0;background:none;font-size:1.8rem;line-height:1;cursor:pointer;color:var(--green)}
.viewer-stage{position:relative;display:flex;align-items:center;justify-content:center;background:#e9e4d8;padding:12px;min-height:0;flex:1}
.viewer-stage img{max-height:76vh;width:auto;max-width:100%;box-shadow:0 8px 24px rgba(0,0,0,.2);background:#fff}
.viewer-nav{position:absolute;top:50%;transform:translateY(-50%);border:0;background:var(--green);color:#fff;width:44px;height:44px;border-radius:50%;font-size:1.6rem;cursor:pointer;opacity:.9}
#vPrev{left:10px}#vNext{right:10px}
.viewer-note{font-size:.85rem;color:var(--muted);text-align:center;margin:8px}
.product-card .thumb{aspect-ratio:3/4}
.product-card .thumb img{object-fit:contain;background:#efe9db}
a.chip{text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.chip-n{font-size:.75rem;background:var(--green-soft);color:var(--green);border-radius:999px;padding:1px 7px}
.chip[aria-pressed=true] .chip-n{background:rgba(255,255,255,.2);color:#fff}
.cat-head{margin:0 0 22px}.cat-head h2{margin-bottom:.2em}
.cat-card{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:inherit;transition:.2s}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.cat-covers{display:flex;justify-content:center;align-items:flex-end;gap:0;height:230px;padding:22px 18px 0;background:#efe9db}
.cat-covers img{width:34%;box-shadow:0 8px 20px rgba(0,0,0,.2);border-radius:3px 3px 0 0;margin:0 -10px}
.cat-covers img:nth-child(2){z-index:2;width:38%}
.cat-covers.empty img{width:90px;box-shadow:none;align-self:center;margin:0;opacity:.6}
.cat-body{padding:18px 20px 22px}.cat-body h3{margin:0 0 .3em}
.cat-count{font-weight:700;color:var(--green)}
.model-card.product-card .thumb{padding:18px;align-items:center;justify-content:center;aspect-ratio:4/4.6}
.model-card.product-card .thumb img{width:auto;height:100%;max-width:100%;object-fit:contain;border-radius:3px;box-shadow:0 10px 24px rgba(0,0,0,.18);background:transparent}

/* catalogue v2: age / subject / type navigation and notebook variants */
.filter-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:10px}
.filter-label{font:700 .75rem/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);width:70px}
.shop-bar{flex-direction:column;align-items:stretch}
.shop-bar .search{align-self:flex-end}
.subject-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.subject-card{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;background:var(--paper);border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--green);transition:.2s}
.subject-card:hover{border-color:var(--gold);box-shadow:var(--shadow)}
.subject-card span{color:var(--muted);font-size:.9rem}
.shelf{margin-bottom:44px}
.shelf-title{font-size:1.35rem;border-bottom:2px solid var(--gold-soft);padding-bottom:8px;margin-bottom:18px}
.shelf-title .muted{font-family:var(--sans);font-size:.95rem;font-weight:400}
.variants{margin:1rem 0}
.variant-label{font-size:.95rem;margin-bottom:8px}
.variant-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:8px;max-height:300px;overflow:auto;padding:2px}
.variant{border:2px solid transparent;border-radius:6px;padding:0;background:none;cursor:pointer;overflow:hidden}
.variant[aria-pressed=true]{border-color:var(--gold)}
.variant img{width:100%;aspect-ratio:3/4;object-fit:cover}
@media (max-width:620px){.filter-label{width:100%}}

/* ===== bookstore design v2 ===== */
.hero-store{padding:clamp(40px,6vw,80px) 0 clamp(48px,6vw,88px)}
.hero-store h1 em{font-style:italic;color:var(--gold-2)}
.trust-row{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none;padding:0;margin:22px 0 0;font-size:.92rem;color:var(--muted)}
.trust-row li::before{content:"✓";color:var(--green);font-weight:700;margin-right:6px}
.hero-books{position:relative;min-height:440px}
.hero-books a{position:absolute;width:44%;transition:transform .25s}
.hero-books a:hover{transform:translateY(-6px) rotate(0)!important;z-index:9}
.hero-books img{border-radius:4px;box-shadow:0 18px 40px rgba(11,61,38,.28);background:#fff}
.hero-books .stack-0{left:2%;top:46px;transform:rotate(-7deg)}
.hero-books .stack-1{left:28%;top:0;z-index:3}
.hero-books .stack-2{right:0;top:60px;transform:rotate(6deg);z-index:2}
.hero-books .stack-3{left:16%;top:210px;transform:rotate(3deg);z-index:4;width:38%}
@media (max-width:860px){.hero-books{min-height:330px;max-width:460px;margin:0 auto}.hero-books .stack-3{display:none}}
.why-books{position:relative;min-height:380px}
.why-books a{position:absolute;width:48%}
.why-books img{border-radius:4px;box-shadow:var(--shadow)}
.why-books .stack-0{left:0;top:40px;transform:rotate(-4deg)}.why-books .stack-1{left:26%;top:0;z-index:2}.why-books .stack-2{right:0;top:50px;transform:rotate(5deg)}
@media (max-width:860px){.why-books{min-height:300px;max-width:420px;margin:24px auto 0}}

.age-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
@media (max-width:980px){.age-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:520px){.age-grid{grid-template-columns:repeat(2,1fr)}}
.age-tile{background:var(--tile);border-radius:16px;padding:22px 16px;text-decoration:none;color:var(--green);display:flex;flex-direction:column;gap:4px;border:1px solid rgba(0,0,0,.05);transition:.2s}
.age-tile strong{font:700 1.35rem/1.1 var(--serif)}
.age-tile span{font-size:.9rem;color:var(--ink)}
.age-tile:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.subj-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
@media (max-width:980px){.subj-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:520px){.subj-grid{grid-template-columns:repeat(2,1fr)}}
.subj-tile{display:flex;flex-direction:column;align-items:center;gap:8px;padding:22px 10px;border:1px solid var(--line);border-radius:16px;background:var(--paper);text-decoration:none;color:var(--green);font-weight:700;text-align:center;transition:.2s}
.subj-ico{font-size:1.9rem}
.subj-tile:hover{border-color:var(--gold);box-shadow:var(--shadow)}

/* product cards */
.book-card{display:flex;flex-direction:column;text-decoration:none;color:inherit;background:var(--paper);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.2s}
.book-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.book-thumb{position:relative;background:linear-gradient(180deg,#f3eee2,#e9e2d1);aspect-ratio:1/1.08;display:flex;align-items:center;justify-content:center;padding:18px}
.book-thumb img{max-height:100%;max-width:100%;width:auto;object-fit:contain;border-radius:3px;box-shadow:0 10px 22px rgba(0,0,0,.2)}
.age-badge{position:absolute;top:10px;left:10px;z-index:2;background:var(--green);color:#fff;font:700 .72rem/1 var(--sans);padding:6px 9px;border-radius:999px;letter-spacing:.02em}
.book-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:4px;flex:1}
.book-series{font:700 .68rem/1.2 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--gold-2)}
.book-body h3{font-size:1.05rem;margin:0;line-height:1.25}
.book-meta{font-size:.85rem;color:var(--muted);margin:0}
.book-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:8px}
.book-cta{font-size:.85rem;font-weight:700;color:var(--green)}
.grid-4 .book-card{min-width:0}
@media (max-width:620px){.grid-4{grid-template-columns:repeat(2,1fr);gap:12px}.book-body{padding:10px 10px 12px}.book-body h3{font-size:.95rem}.book-thumb{padding:10px}}

/* product page */
.gallery-main{display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(180deg,#f3eee2,#e9e2d1)}
.gallery-main img{max-height:620px;width:auto;box-shadow:0 18px 40px rgba(0,0,0,.22);border-radius:4px}
.spec-list{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.cart-prod{display:flex;align-items:center;gap:12px}
.cart-prod img{width:46px;border-radius:3px;box-shadow:0 2px 6px rgba(0,0,0,.15)}
.cart-wrap{overflow-x:auto}
.prose h2{font-size:1.4rem;margin-top:1.6em}
.prose p{color:var(--ink)}
@media (max-width:620px){.cart-table th:nth-child(2),.cart-table td:nth-child(2){display:none}}
/* mobile: hero books visible, filters scroll horizontally */
@media (max-width:860px){.hero-books{min-height:300px;display:block;margin-top:18px}.hero-books a{width:40%}.hero-books .stack-1{left:30%}}
@media (max-width:620px){
  .filter-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;scrollbar-width:none;margin-left:-16px;margin-right:-16px;padding-left:16px;padding-right:16px}
  .filter-row::-webkit-scrollbar{display:none}
  .filter-row .chip{flex:0 0 auto}
  .filter-label{width:auto;flex:0 0 auto;margin-right:4px}
  .page-head{padding:28px 0 20px}.page-head .lead{font-size:1rem}
}
.hero-books,.why-books{width:100%}
@media (max-width:860px){.hero-books{width:100%;max-width:420px;margin-inline:auto}}
/* schools-first */
.hero-schools{padding:clamp(40px,6vw,80px) 0}
.hero-schools h1 em{font-style:italic;color:var(--gold-2)}
.perso-stack{position:relative;min-height:440px;width:100%}
.perso-stack img{position:absolute;width:46%;border-radius:6px;box-shadow:0 18px 40px rgba(11,61,38,.28)}
.perso-stack img:nth-child(1){left:2%;top:40px;transform:rotate(-6deg)}
.perso-stack img:nth-child(2){left:28%;top:0;z-index:2}
.perso-stack img:nth-child(3){right:0;top:56px;transform:rotate(6deg)}
@media (max-width:860px){.perso-stack{min-height:320px;max-width:420px;margin:18px auto 0}}
.custom-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:860px){.custom-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.custom-grid{grid-template-columns:1fr}}
.custom-tile{display:flex;flex-direction:column;gap:6px;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px}
.custom-tile strong{font:700 1.15rem/1.2 var(--serif);color:var(--green)}
.custom-tile span:last-child{color:var(--muted);font-size:.95rem}
.custom-ico{font-size:1.8rem}
.perso-strip{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.perso-strip img{border-radius:6px;box-shadow:var(--shadow);width:100%}
@media (max-width:860px){.perso-strip{grid-template-columns:repeat(3,1fr)}}
@media (max-width:520px){.perso-strip{grid-template-columns:repeat(2,1fr)}}
/* 4 services */
.services{display:grid;grid-template-columns:1.25fr 1fr;gap:22px;align-items:stretch}
@media (max-width:860px){.services{grid-template-columns:1fr}}
.service-core{background:var(--green);color:#e9f0ea;border-radius:20px;padding:clamp(24px,4vw,40px)}
.service-core h3{color:#fff;font-size:clamp(1.5rem,2.6vw,2rem);margin:.4rem 0 .6rem}
.service-core .check-list li{color:#e9f0ea}.service-core .check-list li::before{background-color:var(--gold-soft)}
.service-core .btn-primary{background:var(--gold);color:var(--green)}
.service-side{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:clamp(22px,3vw,32px);display:flex;flex-direction:column;gap:6px}
.service-tag{font:700 .72rem/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--gold-2)}
.service-core .service-tag{color:var(--gold)}
.service-item{padding:14px 0;border-top:1px solid var(--line)}
.service-item:first-of-type{border-top:0}
.service-item h4{margin:0 0 4px;font:700 1.08rem/1.25 var(--serif);color:var(--green)}
.service-item p{margin:0;color:var(--muted);font-size:.95rem}

/* ---- product showcase (examples.html) ---- */
.btn-ghost-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}.btn-ghost-light:hover{background:#fff;color:var(--green)}
.see-ex{display:inline-block;margin-left:.3rem;font-weight:600;white-space:nowrap}
.sc-nav{position:sticky;top:var(--hdr,78px);z-index:20;background:var(--paper);border-bottom:1px solid var(--line)}
.sc-nav .container{display:flex;gap:6px;overflow-x:auto;padding-top:10px;padding-bottom:10px;scrollbar-width:none}
.sc-nav a{flex:none;padding:.45rem .9rem;border-radius:999px;background:var(--green-soft);color:var(--green);font-weight:600;font-size:.92rem;text-decoration:none}
.sc-nav a:hover{background:var(--green);color:#fff}
.sc-note{background:var(--gold-soft);border:1px solid #ecd9a0;color:#6b5413;border-radius:12px;padding:.8rem 1.1rem;font-size:.95rem;margin:0}
.sc{scroll-margin-top:150px}
.sc-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);gap:clamp(24px,4vw,56px);align-items:start}
.sc-text h2{margin-bottom:.6rem}.sc-text h4{font:700 .82rem/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--green-2);margin:1.4rem 0 .5rem}
.sc-text p{margin:0}.sc-text .btn{margin-top:1.2rem}
.sc-gal{min-width:0}
.sc-main{display:block;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);background:#fff;max-width:440px;margin:0 auto}
.sc-main.sc-wide{max-width:none}.sc-main img{display:block;width:100%;height:auto}
.sc-thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:14px;margin-top:16px}
.sc-thumbs a,.sc-pages a{display:block;text-decoration:none;color:var(--muted);font-size:.85rem;line-height:1.3}
.sc-thumbs img,.sc-pages img{display:block;width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top;border-radius:8px;border:1px solid var(--line);background:#fff;box-shadow:0 4px 12px rgba(11,61,38,.08);transition:.18s}
.sc-thumbs a:hover img,.sc-pages a:hover img{transform:translateY(-3px);box-shadow:0 10px 22px rgba(11,61,38,.16)}
.sc-thumbs span,.sc-pages span{display:block;margin-top:6px}
.sc-pages{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;margin-bottom:28px}
.sc-tiles{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px;margin-bottom:26px}
.sc-tiles a{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;text-decoration:none;color:var(--green);transition:.18s}
.sc-tiles a:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.sc-tiles img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;object-position:top}.sc-tiles b{display:block;padding:.7rem .8rem;font-size:.95rem}
.lb{position:fixed;inset:0;z-index:100;background:rgba(10,20,15,.88);display:flex;align-items:center;justify-content:center;padding:20px}
.lb[hidden]{display:none}.lb figure{margin:0;max-width:min(1400px,92vw);text-align:center}
.lb img{max-width:100%;max-height:84vh;border-radius:6px;box-shadow:0 20px 50px rgba(0,0,0,.5);background:#fff}
.lb figcaption{color:#eef3ef;margin-top:10px;font-size:.95rem}
.lb button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:50%;width:48px;height:48px;font-size:30px;line-height:1;cursor:pointer}
.lb button:hover{background:rgba(255,255,255,.25)}.lb-x{top:16px;right:16px}.lb-p{left:16px;top:50%}.lb-n{right:16px;top:50%}
@media (max-width:980px){.sc-grid{grid-template-columns:1fr}.sc-tiles{grid-template-columns:repeat(3,minmax(0,1fr))}.sc-pages{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:560px){.sc-tiles,.sc-pages{grid-template-columns:repeat(2,minmax(0,1fr))}.sc-thumbs{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.lb-p,.lb-n{top:auto;bottom:16px}}

/* school tier prices on product page */
.school-prices{margin-top:1.2rem;background:var(--green-soft);border-radius:12px;padding:14px 16px;font-size:.93rem}
.school-prices table{width:100%;border-collapse:collapse;margin:.5rem 0}.school-prices td{padding:.3rem 0;border-bottom:1px solid rgba(11,61,38,.12)}
.school-prices td:last-child{text-align:right;font-weight:700;color:var(--green)}