@font-face{font-family:Comic Neue;src:url('assets/fonts/ComicNeue-Regular.ttf')}*{box-sizing:border-box}body{margin:0;background:#f6f8f6;color:#223d35;font:16px/1.65 Arial,sans-serif}a{color:#137749;text-underline-offset:3px}header{background:white;border-bottom:1px solid #dce6de}.header-inner{max-width:1280px;margin:auto;padding:20px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px}nav{display:flex;gap:20px;flex-wrap:wrap}.brand img{width:220px;height:auto;display:block}.button,.level-link{display:inline-block;background:#137749;color:white;border-radius:8px;padding:10px 19px;text-decoration:none;font-weight:bold}.catalog-layout{max-width:1280px;margin:auto;display:grid;grid-template-columns:210px minmax(0,1fr);gap:42px;padding:32px 28px 60px}aside{border-right:1px solid #dce6de;padding-right:24px}aside h2{font-size:14px;text-transform:uppercase;letter-spacing:.06em;margin-top:28px}aside nav{flex-direction:column;gap:9px}aside a{text-decoration:none;padding:5px 10px;border-radius:6px}aside a:hover,aside .current{background:#e0eee5}.breadcrumbs{font-size:12px;gap:8px;color:#617469}h1{font-size:40px;letter-spacing:-1.3px;line-height:1.15;max-width:850px;margin:25px 0 18px}h2{font-size:24px;line-height:1.3;margin:34px 0 18px}h3{font-size:18px;line-height:1.3;margin:0 0 10px}.intro{font-size:19px;max-width:800px;color:#52655b}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.topic-card{background:white;border:1px solid #dbe4dc;border-radius:12px;padding:22px;text-decoration:none;color:inherit}.topic-card p{font-size:14px;margin:0 0 16px;color:#56685f}.topic-card span{font-size:13px;color:#137749;font-weight:bold}.topic-card:hover{border-color:#137749;box-shadow:0 4px 15px #20482b10}.level-grid,.activity-links,.related-inline{display:flex;flex-wrap:wrap;gap:12px}.level-link{background:white;color:#137749;border:1px solid #a8c6b3}.callout{background:#fff1c9;padding:12px 26px 26px;border-radius:12px;margin-top:30px}.small{font-size:13px;color:#617469}.alphabet-index{display:grid;grid-template-columns:repeat(7,1fr);gap:12px}.alphabet-index a{background:white;text-align:center;border:1px solid #dbe4dc;padding:12px;border-radius:10px;font:32px 'Comic Neue',sans-serif;text-decoration:none}.picture-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.picture-grid a{display:flex;flex-direction:column;align-items:center;background:white;border:1px solid #dbe4dc;border-radius:10px;padding:16px;text-decoration:none;text-align:center;font-size:14px}.picture-grid svg{width:100%;height:130px}.letter-example{display:flex;gap:30px;align-items:center;background:white;padding:24px;border-radius:12px}.letter-example>strong{font:100px 'Comic Neue',sans-serif}.picture-pair{display:flex;gap:24px}.picture-pair figure{margin:0;text-align:center}.picture-pair svg{width:130px;height:130px}.maze-preview{background:white;border:1px solid #dbe4dc;padding:24px;max-width:530px}.maze-preview svg{width:100%;max-height:480px}.sample-questions{background:white;border:1px solid #dbe4dc;border-radius:12px;padding:24px 24px 24px 50px}.sample-questions li{padding:12px;border-bottom:1px solid #edf1ee}.sample-questions svg{max-width:260px;max-height:90px}.count-objects{display:flex;gap:8px;flex-wrap:wrap}.count-objects span{font-size:24px}.fraction-bar{display:flex;max-width:220px;height:28px}.fraction-bar span{flex:1;border:1px solid black}.fraction-bar .shaded{background:#888}.number-trace{font:55px 'Comic Neue';color:#aaa}details{background:#e9f1eb;padding:14px;border-radius:8px}summary{cursor:pointer;font-weight:bold}footer{border-top:1px solid #dce6de;padding:30px 28px;text-align:center;background:white}.skip-link{position:absolute;top:-80px;left:20px;background:white;padding:12px}.skip-link:focus{top:0}a:focus-visible,button:focus-visible{outline:3px solid #eda625;outline-offset:4px}@media(max-width:850px){.header-inner{flex-direction:column;align-items:flex-start}.catalog-layout{grid-template-columns:1fr;padding:20px;gap:15px}aside{border:0;order:2}aside nav{flex-direction:row}h1{font-size:32px}.picture-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:500px){.topic-grid{grid-template-columns:1fr}.picture-grid{grid-template-columns:repeat(2,1fr)}.alphabet-index{grid-template-columns:repeat(4,1fr)}.letter-example{flex-direction:column}.header-inner nav{gap:12px;font-size:14px}}@media print{header,aside,footer,.breadcrumbs,.level-grid,.activity-links{display:none}.catalog-layout{display:block}body{background:white}a{color:inherit}.topic-card{break-inside:avoid}}

.use-guide{margin-top:40px;border-top:2px solid #dce6de;max-width:850px}.use-guide li{margin-bottom:12px}.counting-dots{display:flex;flex-wrap:wrap;gap:8px;max-width:240px;padding:10px}.counting-dots span{width:13px;height:13px;background:#222;border-radius:50%}.brand img{height:46px;object-fit:cover;object-position:top}
.counting-pictures{display:grid;grid-template-columns:repeat(6,minmax(26px,38px));gap:8px;align-items:center;margin:10px 0}.counting-pictures svg{display:block;width:100%;height:auto;max-height:38px}.counting-choices{display:flex;gap:14px;margin:10px 0}.counting-choices span{display:grid;place-items:center;width:40px;height:40px;border:2px solid #233;border-radius:50%;font-size:20px;font-weight:700}@media(max-width:620px){.counting-pictures{grid-template-columns:repeat(5,minmax(24px,34px));gap:6px}.counting-choices span{width:36px;height:36px;font-size:18px}}

.seo-copy{margin-top:34px;padding-top:22px;border-top:1px solid #dde5e3;max-width:72ch}
.seo-copy h2{font-size:21px;margin:0 0 10px}
.seo-copy h3{font-size:16px;margin:20px 0 7px}
.seo-copy p{margin:0 0 11px;line-height:1.6}
.seo-copy ul{margin:0 0 11px;padding-left:20px;line-height:1.6}
.seo-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.seo-tags a{font-size:13px;padding:4px 10px;border:1px solid #cfdad7;border-radius:999px;text-decoration:none;color:#2a4a44}
.seo-tags a:hover{background:#eef5f3}

.topic-illustration{float:right;margin:0 0 10px 16px;width:84px;text-align:center}
.topic-illustration div{width:84px;height:84px}
.topic-illustration svg{width:100%;height:100%}
.topic-illustration figcaption{font-size:12px;color:#4a5b59;margin-top:3px;text-transform:capitalize}
/* Smooth app-like navigation between catalog pages (Chrome/Edge). Falls back to a normal load. */
@view-transition{navigation:auto}
::view-transition-old(root){animation-duration:.18s}
::view-transition-new(root){animation-duration:.22s}
@media(prefers-reduced-motion:reduce){::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}}

/* Social share bar on catalog pages */
.share-bar{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:14px 0 20px}
.share-bar .share-label{font-size:13px;font-weight:800;color:#50645f;margin-right:2px;letter-spacing:.02em}
.share-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;color:#fff;text-decoration:none;box-shadow:0 2px 6px rgba(0,0,0,.14);transition:transform .12s ease,filter .12s ease}
.share-btn:hover,.share-btn:focus-visible{transform:translateY(-2px);filter:brightness(1.08)}
.share-btn svg{width:18px;height:18px;fill:#fff}
.share-pinterest{background:#e60023}
.share-facebook{background:#1877f2}
.share-x{background:#000}
.share-whatsapp{background:#25d366}
.share-email{background:#5b6b78}
@media print{.share-bar{display:none!important}}
.make-cta{background:#eef7f0;border:1px solid #bfe0cb;border-radius:14px;padding:22px 24px;margin:8px 0 28px}
.make-btn{display:inline-block;background:#137749;color:#fff;font-size:20px;font-weight:bold;padding:15px 32px;border-radius:10px;text-decoration:none;box-shadow:0 3px 10px #13774933}
.make-btn:hover,.make-btn:focus-visible{background:#0f6440;color:#fff}
.make-note{font-size:14px;color:#52655b;margin:12px 0 0;max-width:640px}
.cta-levels{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:18px}
.cta-levels-label{font-size:13px;font-weight:bold;color:#50645f;letter-spacing:.02em}
@media print{.make-cta{display:none!important}}

/* Cross-promo strip (→ FreshWorksheets.com) just under the catalog header */
.fw-xsite{display:flex;align-items:center;justify-content:center;gap:10px;padding:8px 20px;text-decoration:none;font-size:14px;font-weight:600;color:#2a2f45;background:linear-gradient(95deg,#fff0f5 0%,#fff7e8 45%,#eefaf0 72%,#eef4ff 100%);border-bottom:1px solid #f0dce6}
.fw-xsite:hover,.fw-xsite:focus-visible{color:#e23e6d}
.fw-xsite-art{width:34px;height:23px;flex:none;display:block}
.fw-xsite-art svg{width:100%;height:100%;overflow:visible}
.fw-xsite-txt strong{color:#e23e6d;font-weight:800}
.fw-xsite-go{color:#3a86ff;font-weight:800;font-size:16px}
@media(max-width:560px){.fw-xsite{font-size:13px;padding:7px 12px}.fw-xsite-art{display:none}}
@media print{.fw-xsite{display:none!important}}
.faq{margin:28px 0 8px;border-top:1px solid #e7ece9;padding-top:18px}
.faq h2{font-size:20px;margin:0 0 10px}
.faq-list{margin:0}
.faq-list dt{font-weight:700;color:#20302d;margin:14px 0 4px}
.faq-list dd{margin:0 0 6px;color:#44514c;line-height:1.55}