/* Mathlab widgets for Elementor (Store Kit). Ported from the block theme's otterbloom.css.
 * Colours and fonts read the Elementor Site Kit's globals (--e-global-*), so a colour changed in Site Settings
 * flows into these components too; the hex values are the brand's own, used when no kit is active.
 * The kit styles every <button>, <a> and h1–h6 at specificity (0,1,1); component rules here use two classes. */

body {
	--ob-ink: var(--e-global-color-primary, #1F2A2E);
	--ob-river-deep: var(--e-global-color-secondary, #21555A);
	--ob-river: var(--e-global-color-accent, #2F6F73);
	--ob-ink-soft: var(--e-global-color-ink_soft, #4A5A60);
	--ob-paper: var(--e-global-color-paper, #FBF7F0);
	--ob-white: var(--e-global-color-white, #FFFFFF);
	--ob-river-pale: var(--e-global-color-river_pale, #D5E6E4);
	--ob-bloom: var(--e-global-color-bloom, #F2A65A);
	--ob-bloom-pale: var(--e-global-color-bloom_pale, #F8DFC4);
	--ob-moss: var(--e-global-color-moss, #8FA876);
	--ob-moss-pale: var(--e-global-color-moss_pale, #DDE5D1);
	--ob-berry: var(--e-global-color-berry, #C8553D);
	--ob-sand: var(--e-global-color-sand, #EADFCB);
	--ob-line: var(--e-global-color-line, #E4DACA);
	--ob-display: var(--e-global-typography-primary-font-family, "Fraunces"), "Iowan Old Style", Georgia, serif;
	--ob-body: var(--e-global-typography-text-font-family, "Nunito Sans"), system-ui, -apple-system, "Segoe UI", sans-serif;
	--ob-fs-xs: .8125rem; --ob-fs-sm: .9375rem; --ob-fs-md: 1.0625rem;
	--ob-fs-lg: clamp(1.125rem, 1.125rem + ((1vw - 0.2rem) * 0.4), 1.375rem);
	--ob-fs-xl: clamp(1.375rem, 1.375rem + ((1vw - 0.2rem) * 1), 2rem);
	--ob-fs-xxl: clamp(1.875rem, 1.875rem + ((1vw - 0.2rem) * 1.4), 2.75rem);
	--ob-fs-xxxl: clamp(2.375rem, 2.375rem + ((1vw - 0.2rem) * 2.6), 4rem);
	--ob-s30: .75rem; --ob-s40: 1rem; --ob-s50: clamp(1.25rem, 2vw, 1.5rem); --ob-s60: clamp(1.5rem, 3vw, 2.25rem);
	--ob-s70: clamp(2.25rem, 5vw, 3.5rem); --ob-s80: clamp(3rem, 7vw, 5.5rem); --ob-s90: clamp(4rem, 10vw, 8rem);
	--ob-r-card: 14px; --ob-r-img: 18px; --ob-r-pill: 999px; --ob-r-sm: 8px;
	--ob-ease: 180ms cubic-bezier(.2, .7, .2, 1);
	--ob-gutter: clamp(20px, 3vw, 40px);
	--ob-header-h: 76px;
	--ob-shadow-soft: 0 1px 2px rgba(31, 42, 46, .06), 0 6px 18px rgba(31, 42, 46, .06);
	--ob-shadow-lift: 0 2px 4px rgba(31, 42, 46, .06), 0 18px 40px rgba(31, 42, 46, .12);
	-webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; overflow-x: clip;
}
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--ob-header-h) + 48px); }
:where(a, button, input, select, summary, textarea):focus-visible { outline: 3px solid var(--ob-bloom); outline-offset: 3px; border-radius: 4px; }
.screen-reader-text { border: 0; clip: rect(1px, 1px, 1px, 1px); clip-path: inset(50%); height: 1px; margin: -1px; overflow: hidden; padding: 0; position: absolute !important; width: 1px; word-wrap: normal !important; }
.ob-placeholder { padding: 1rem; border: 1.5px dashed var(--ob-line); border-radius: var(--ob-r-card); color: var(--ob-ink-soft); font-size: var(--ob-fs-sm); text-align: center; }
.ob-bg-sand { background: var(--ob-sand); } .ob-bg-river { background: var(--ob-river-pale); } .ob-bg-bloom { background: var(--ob-bloom-pale); } .ob-bg-moss { background: var(--ob-moss-pale); }
.ob-eyebrow, .ob-eyebrow-link { font-family: var(--ob-body); font-size: var(--ob-fs-xs); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--ob-river-deep); margin: 0 0 var(--ob-s30); }
.ob-eyebrow-link a, .ob-eyebrow a { text-decoration: none; color: inherit; }
.ob-empty { color: var(--ob-ink-soft); text-align: center; padding-block: var(--ob-s70); }

/* Site header (the template sits in <header class="ml-site-header">, rendered by the Store Kit) ------------- */
.ml-site-header { position: sticky; top: 0; z-index: 1000; }
.admin-bar .ml-site-header { top: 32px; }
@media (max-width: 782px) { .admin-bar .ml-site-header { top: 0; } }
.ml-site-header .ob-topbar p { margin: 0; }
.ml-site-header .ob-topbar strong { color: var(--ob-bloom-pale); font-weight: 700; }
.ml-site-header .ob-header { background: color-mix(in srgb, var(--ob-paper) 92%, transparent); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid var(--ob-line); transition: box-shadow var(--ob-ease); }
.ml-site-header.is-scrolled .ob-header { box-shadow: var(--ob-shadow-soft); }
.ml-site-header .ob-header:has(.ob-nav.is-open) { backdrop-filter: none; -webkit-backdrop-filter: none; background: var(--ob-paper); }
.ob-logo { display: inline-flex; align-items: center; flex-shrink: 0; }
.elementor-widget-mathlab-logo { flex-shrink: 0; }
.ob-logo img { width: auto; height: 38px; display: block; }

/* Menu: bar on wide screens, overlay below 1100px. */
.ob-nav .ob-nav__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: clamp(.9rem, 1.6vw, 1.75rem); justify-content: center; }
.ob-nav .ob-nav__list a { color: var(--ob-ink); text-decoration: none; padding-block: .5rem; position: relative; font-family: var(--ob-body); font-size: var(--ob-fs-md); }
.ob-nav .ob-nav__list a::after { content: ""; position: absolute; left: 0; right: 0; bottom: .15rem; height: 2px; border-radius: 2px; background: var(--ob-bloom); transform: scaleX(0); transform-origin: left; transition: transform var(--ob-ease); }
.ob-nav .ob-nav__list a:hover::after, .ob-nav .ob-nav__list .current-menu-item > a::after, .ob-nav .ob-nav__list a[aria-current="page"]::after { transform: scaleX(1); }
.ob-nav button.ob-nav__toggle { display: none; background: transparent; color: var(--ob-ink); border: 0; border-radius: var(--ob-r-pill); padding: .55rem; line-height: 0; position: relative; z-index: 1001; }
.ob-nav button.ob-nav__toggle:hover { background: var(--ob-sand); }
.ob-nav .ob-nav__x { display: none; }
.ob-nav.is-open .ob-nav__x { display: inline; } .ob-nav.is-open .ob-nav__bars { display: none; }
@media (max-width: 1099px) {
	.ob-nav button.ob-nav__toggle { display: inline-flex; }
	.ob-nav .ob-nav__panel { display: none; }
	.ob-nav.is-open .ob-nav__panel { display: block; position: fixed; inset: 0; z-index: 1000; background: var(--ob-paper); padding: calc(var(--ob-header-h) + var(--ob-s60)) var(--ob-gutter) var(--ob-s60); overflow-y: auto; }
	.ob-nav.is-open .ob-nav__list { flex-direction: column; align-items: flex-start; gap: var(--ob-s40); }
	.ob-nav.is-open .ob-nav__list a { font-family: var(--ob-display); font-size: var(--ob-fs-xl); }
	.ml-site-header .ob-logo img { height: 32px; }
}
.ob-menu .ob-menu-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; font-size: var(--ob-fs-sm); }

/* Search and cart in the header. */
.ob-search { display: flex; align-items: center; gap: .25rem; position: relative; }
.ob-search .ob-search__input { width: 0; padding: 0; border: 0; opacity: 0; transition: width var(--ob-ease), opacity var(--ob-ease), padding var(--ob-ease); border-radius: var(--ob-r-pill); background: var(--ob-white); font: inherit; font-size: var(--ob-fs-sm); color: var(--ob-ink); height: 2.5rem; }
.ob-search.is-open .ob-search__input { width: min(16rem, 52vw); padding: 0 1rem; border: 1px solid var(--ob-line); opacity: 1; }
.ob-search button.ob-search__toggle, .ob-search button.ob-search__submit, a.ob-cart { background: transparent; color: var(--ob-ink); border: 0; border-radius: var(--ob-r-pill); padding: .55rem; line-height: 0; display: inline-flex; align-items: center; }
.ob-search button.ob-search__toggle:hover, .ob-search button.ob-search__submit:hover, a.ob-cart:hover { background: var(--ob-sand); color: var(--ob-ink); }
.ob-search:not(.is-open) .ob-search__submit { display: none; }
.ob-search.is-open .ob-search__toggle { display: none; }
.ob-search.is-open:not(:has(.ob-search__toggle)) button.ob-search__submit { line-height: 1.2; padding: .6rem 1.2rem; background: var(--ob-river); color: var(--ob-white); font-weight: 700; }
a.ob-cart { position: relative; text-decoration: none; }
.ob-cart .ob-cart__count { position: absolute; top: 0; right: -2px; min-width: 1.2rem; height: 1.2rem; padding: 0 .3rem; border-radius: var(--ob-r-pill); background: var(--ob-bloom); color: var(--ob-ink); font-size: .6875rem; font-weight: 800; line-height: 1.2rem; text-align: center; }
.ob-cart .ob-cart__count.is-empty { display: none; }

/* Header layout: below 1100px the menu toggle sits first and the logo takes the free space. */
.ml-site-header .ob-header { min-height: var(--ob-header-h); }
@media (max-width: 1099px) {
	.ml-site-header .ob-header .elementor-widget-mathlab-nav { order: -1; flex: 0 0 auto; }
	.ml-site-header .ob-header .elementor-widget-mathlab-logo { margin-right: auto; }
	.ml-site-header .ob-header > .e-con-inner { gap: var(--ob-s30); }
}
@media (min-width: 1100px) { .ml-site-header .ob-header .elementor-widget-mathlab-nav { flex: 1 1 auto; } }
.ob-topbar .elementor-widget-text-editor p { margin: 0; }

/* Footer (template container .ob-footer). */
.ob-footer .ob-menu a, .ob-footer .elementor-widget-text-editor a { color: var(--ob-paper); text-decoration: none; }
.ob-footer .ob-menu a:hover, .ob-footer .elementor-widget-text-editor a:hover { color: var(--ob-bloom); text-decoration: underline; }
.ob-footer .ob-footer__base .elementor-widget-text-editor a { text-decoration: underline; text-underline-offset: 2px; }
.ob-footer .ob-footer__base { border-top: 1px solid color-mix(in srgb, var(--ob-paper) 16%, transparent); }
.ob-footer .ob-footer__base p { margin: 0; }
.ob-footer .ob-footer__demo { opacity: .8; max-width: 34rem; }

/* Hero (container .ob-hero with an image widget .ob-hero__img and a panel). -------------------------------- */
.ob-hero { position: relative; overflow: hidden; isolation: isolate; }
.ob-hero .ob-hero__panel { position: relative; z-index: 2; margin-inline-start: max(0px, calc((100% - 1320px) / 2)); }
.ob-hero .ob-hero__img { position: absolute !important; inset: 0; z-index: -2; width: 100% !important; max-width: none !important; margin: 0 !important; }
.ob-hero .ob-hero__img img { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; border-radius: 0; }
/* The gradient lives on the image widget: Elementor reserves a container's ::before for its background overlay. */
.ob-hero .ob-hero__img::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, color-mix(in srgb, var(--ob-paper) 92%, transparent) 0%, color-mix(in srgb, var(--ob-paper) 70%, transparent) 38%, transparent 64%); }
@media (max-width: 781px) {
	.ob-hero .ob-hero__img::after { background: linear-gradient(0deg, color-mix(in srgb, var(--ob-paper) 96%, transparent) 0%, color-mix(in srgb, var(--ob-paper) 82%, transparent) 55%, transparent 85%); }
	.ob-hero .ob-hero__img img { object-position: 70% center; }
}

/* Buttons: an outline variant for Elementor's button widget (CSS class ob-btn-outline). */
.elementor-widget-button .elementor-button { transition: background-color var(--ob-ease), transform var(--ob-ease), box-shadow var(--ob-ease); }
.elementor-widget-button .elementor-button:hover { transform: translateY(-1px); box-shadow: var(--ob-shadow-soft); }
.ob-btn-outline .elementor-button.elementor-button { background: transparent; color: var(--ob-ink); border: 1.5px solid var(--ob-ink); }
.ob-btn-outline .elementor-button.elementor-button:hover, .ob-btn-outline .elementor-button.elementor-button:focus { background: var(--ob-ink); color: var(--ob-paper); }

/* Section heads (a row container .ob-section__head). */
.ob-section__head { gap: var(--ob-s40); }
.ob-section__aside p, .ob-section__aside { color: var(--ob-ink-soft); max-width: 30rem; margin: 0; }
.ob-section__link a { font-weight: 700; text-decoration: none; }
.ob-section__link a:hover { text-decoration: underline; }
.ob-section__link p { margin: 0; }

/* Age chips ------------------------------------------------------------------------------------------- */
.ob-age-chips { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }
.ob-age-chips .ob-age-chips__label { font-weight: 800; font-size: var(--ob-fs-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--ob-ink-soft); margin-right: .25rem; }
.ob-age-chips a.ob-chip { display: inline-flex; align-items: center; padding: .5rem 1rem; border-radius: var(--ob-r-pill); background: var(--ob-white); border: 1.5px solid var(--ob-line); color: var(--ob-ink); font-weight: 700; font-size: var(--ob-fs-sm); text-decoration: none; transition: border-color var(--ob-ease), background var(--ob-ease), color var(--ob-ease); }
.ob-age-chips a.ob-chip:hover { border-color: var(--ob-river); color: var(--ob-river); }
.ob-age-chips a.ob-chip.is-current { background: var(--ob-river); border-color: var(--ob-river); color: var(--ob-white); }

/* Collection tiles ------------------------------------------------------------------------------------- */
.ob-tiles { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--ob-s50); }
.ob-tiles .ob-tile { display: flex; flex-direction: column; border-radius: var(--ob-r-img); overflow: hidden; color: var(--ob-ink); position: relative; transition: transform var(--ob-ease), box-shadow var(--ob-ease); }
.ob-tiles .ob-tile:hover { transform: translateY(-4px); box-shadow: var(--ob-shadow-lift); }
.ob-tile .ob-tile__media { aspect-ratio: 4 / 3; overflow: hidden; }
.ob-tile .ob-tile__media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
.ob-tile:hover .ob-tile__media img { transform: scale(1.04); }
.ob-tile .ob-tile__body { display: grid; gap: .25rem; padding: var(--ob-s50); }
.ob-tile .ob-tile__age { margin: 0; font-size: var(--ob-fs-xs); font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--ob-river-deep); }
.ob-tile .ob-tile__name { margin: 0; font-family: var(--ob-display); font-size: var(--ob-fs-xl); font-weight: 600; line-height: 1.15; }
.ob-tile .ob-tile__name a { color: var(--ob-ink); text-decoration: none; }
.ob-tile .ob-tile__name a::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.ob-tile .ob-tile__line { margin: 0; color: var(--ob-ink-soft); font-size: var(--ob-fs-sm); }
@media (max-width: 1023px) { .ob-tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 559px) { .ob-tiles { grid-template-columns: 1fr; } .ob-tile .ob-tile__media { aspect-ratio: 16 / 9; } }

/* Product cards --------------------------------------------------------------------------------------- */
.ob-products { --ob-cols: 4; list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(var(--ob-cols), minmax(0, 1fr)); gap: var(--ob-s60) var(--ob-s50); }
.ob-products .ob-card { display: flex; flex-direction: column; position: relative; margin: 0; padding: 0; width: auto; float: none; }
.ob-card .ob-card__media { border-radius: var(--ob-r-card); overflow: hidden; margin-bottom: var(--ob-s40); background: var(--ob-sand); aspect-ratio: 1; }
.ob-card .ob-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
.ob-card:hover .ob-card__media img { transform: scale(1.035); }
.ob-card .ob-card__title { margin: 0 0 .15rem; font-family: var(--ob-display); font-size: var(--ob-fs-lg); font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; }
.ob-card .ob-card__title a { text-decoration: none; color: var(--ob-ink); }
.ob-card .ob-card__title a::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.ob-card .ob-card__sub { margin: 0; color: var(--ob-ink-soft); font-size: var(--ob-fs-sm); line-height: 1.4; }
.ob-card .ob-card__age { margin: .5rem 0 0; display: inline-flex; align-self: flex-start; padding: .2rem .6rem; border-radius: var(--ob-r-pill); background: var(--ob-moss-pale); color: var(--ob-ink); font-size: var(--ob-fs-xs); font-weight: 700; }
.ob-card .ob-card__price { margin: .6rem 0 .8rem; font-weight: 800; font-size: var(--ob-fs-md); }
.ob-card .ob-card__price del { opacity: .55; font-weight: 600; margin-right: .3rem; }
.ob-card .ob-card__button { margin-top: auto; position: relative; z-index: 2; }
.ob-card .ob-card__button a.button { display: inline-flex; background: transparent; color: var(--ob-river-deep); border: 1.5px solid currentColor; border-radius: var(--ob-r-pill); padding: .55rem 1.1rem; font-size: var(--ob-fs-xs); font-weight: 800; text-decoration: none; }
.ob-card .ob-card__button a.button:hover { background: var(--ob-river); color: var(--ob-white); border-color: var(--ob-river); }
.ob-card .ob-card__button .added_to_cart { display: block; margin-top: .4rem; font-size: var(--ob-fs-xs); font-weight: 700; }
@media (max-width: 599px) { .ob-products .ob-card .ob-card__title { font-size: var(--ob-fs-md); } .ob-card .ob-card__sub { display: none; } .ob-products { gap: var(--ob-s50) var(--ob-s40); } }
.ob-pagination { margin-top: var(--ob-s70); }
.ob-pagination ul { list-style: none; margin: 0; padding: 0; display: flex; gap: .5rem; justify-content: center; font-weight: 700; }
.ob-pagination a, .ob-pagination span { display: inline-block; padding: .4rem .8rem; border-radius: var(--ob-r-pill); text-decoration: none; }
.ob-pagination .current { background: var(--ob-ink); color: var(--ob-paper); }

/* Toolbar, breadcrumbs, page heads -------------------------------------------------------------------- */
.ob-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--ob-s40); padding-block: var(--ob-s40); margin-bottom: var(--ob-s60); border-block: 1px solid var(--ob-line); }
.ob-toolbar .ob-toolbar__right { display: flex; align-items: center; gap: var(--ob-s40); flex-wrap: nowrap; }
.ob-toolbar .woocommerce-result-count { margin: 0; color: var(--ob-ink-soft); font-size: var(--ob-fs-sm); }
.ob-toolbar .woocommerce-ordering { margin: 0; }
.ob-toolbar select, .ob-buy select { appearance: none; -webkit-appearance: none; border: 1.5px solid var(--ob-line); border-radius: var(--ob-r-pill); background-color: var(--ob-white); padding: .55rem 2.4rem .55rem 1rem; font: inherit; font-size: var(--ob-fs-sm); font-weight: 700; color: var(--ob-ink); cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%231F2A2E' stroke-width='1.8'%3E%3Cpath d='m1 1.5 5 5 5-5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; }
/* WooCommerce colours the trail #767676 (4.2:1 on paper, below AA) at (0,2,0)/(0,2,1): .elementor out-ranks it. */
.elementor nav.woocommerce-breadcrumb { font-size: var(--ob-fs-xs); color: var(--ob-ink-soft); margin: 0; }
/* nav.… out-ranks Elementor's ".elementor a { text-decoration: none }" and the kit's link colour (both (0,1,1)). */
.elementor nav.woocommerce-breadcrumb a { color: var(--ob-ink-soft); text-decoration: underline; text-decoration-color: var(--ob-line); text-underline-offset: 3px; }
.elementor nav.woocommerce-breadcrumb a:hover { color: var(--ob-river); text-decoration-color: currentColor; }
.ob-crumb-sep { margin-inline: .5rem; opacity: .5; }
.ob-pagehead .ob-pagehead__title { margin: 0 0 var(--ob-s40); font-size: var(--ob-fs-xxxl); }
.ob-pagehead .ob-pagehead__lede { color: var(--ob-ink-soft); max-width: 44rem; margin: 0; font-size: var(--ob-fs-lg); }
.ob-pagehead.is-center { text-align: center; }
.ob-pagehead.is-center .ob-pagehead__lede { margin-inline: auto; }

/* Collection banner ----------------------------------------------------------------------------------- */
.ob-term-banner { display: grid; grid-template-columns: 1fr 1fr; border-radius: var(--ob-r-img); overflow: hidden; min-height: 360px; }
.ob-term-banner .ob-term-banner__text { padding: var(--ob-s70); align-self: center; }
.ob-term-banner .ob-term-banner__title { margin: 0 0 var(--ob-s40); font-size: var(--ob-fs-xxxl); }
.ob-term-banner .ob-term-banner__desc p { margin: 0; max-width: 32rem; }
.ob-term-banner .ob-term-banner__count { margin: var(--ob-s50) 0 0; font-weight: 800; font-size: var(--ob-fs-sm); color: var(--ob-river-deep); }
.ob-term-banner .ob-term-banner__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 899px) { .ob-term-banner { grid-template-columns: 1fr; } .ob-term-banner .ob-term-banner__media { order: -1; aspect-ratio: 16 / 9; } .ob-term-banner .ob-term-banner__text { padding: var(--ob-s60); } }

/* Features (values band, product promise) --------------------------------------------------------------- */
.ob-features { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--ob-s60); }
.ob-features svg { color: var(--ob-river); margin-bottom: .75rem; display: block; }
.ob-features .ob-feature__title { font-size: var(--ob-fs-lg); margin: 0 0 .4rem; font-family: var(--ob-display); font-weight: 600; }
.ob-features .ob-feature__text { margin: 0; font-size: var(--ob-fs-sm); color: var(--ob-ink-soft); }
.ob-features.is-dark svg { color: var(--ob-bloom); }
.ob-features.is-dark .ob-feature__title { color: var(--ob-paper); }
.ob-features.is-dark .ob-feature__text { color: var(--ob-paper); opacity: .86; }
@media (max-width: 899px) { .ob-features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 479px) { .ob-features { grid-template-columns: 1fr; } }
.ob-promise { list-style: none; margin: 0; padding: var(--ob-s50); display: grid; gap: .7rem; background: var(--ob-white); border: 1px solid var(--ob-line); border-radius: var(--ob-r-card); font-size: var(--ob-fs-sm); }
.ob-promise li { display: flex; gap: .75rem; align-items: center; }
.ob-promise svg { color: var(--ob-river); flex-shrink: 0; }

/* Journal cards ------------------------------------------------------------------------------------------ */
.ob-postcards { --ob-cols: 3; list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(var(--ob-cols), minmax(0, 1fr)); gap: var(--ob-s60) var(--ob-s50); }
.ob-postcards .ob-postcard { display: flex; flex-direction: column; gap: .5rem; position: relative; }
.ob-postcard .ob-postcard__media { margin: 0 0 .5rem; overflow: hidden; border-radius: var(--ob-r-img); aspect-ratio: 16 / 10; }
.ob-postcard .ob-postcard__media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
.ob-postcard:hover .ob-postcard__media img { transform: scale(1.03); }
.ob-postcard .ob-postcard__terms { margin: 0; font-size: var(--ob-fs-xs); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.ob-postcard .ob-postcard__terms a { color: var(--ob-river); text-decoration: none; position: relative; z-index: 2; }
.ob-postcard .ob-postcard__title { margin: 0; font-family: var(--ob-display); font-size: var(--ob-fs-lg); font-weight: 600; line-height: 1.2; }
.ob-postcard .ob-postcard__title a { text-decoration: none; color: var(--ob-ink); }
.ob-postcard .ob-postcard__title a::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.ob-postcard .ob-postcard__excerpt { margin: 0; color: var(--ob-ink-soft); font-size: var(--ob-fs-sm); }
.ob-postcard .ob-postcard__date { margin: 0; color: var(--ob-ink-soft); font-size: var(--ob-fs-xs); }

/* Newsletter form (demo) --------------------------------------------------------------------------------- */
.ob-newsletter__form { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: center; }
.ob-newsletter__form input[type="email"] { flex: 1 1 16rem; max-width: 26rem; padding: .85rem 1.2rem; border-radius: var(--ob-r-pill); border: 1.5px solid var(--ob-line); background: var(--ob-white); font: inherit; color: var(--ob-ink); }
.ob-newsletter__form button[type="submit"] { border-radius: var(--ob-r-pill); background: var(--ob-ink); color: var(--ob-paper); border: 0; padding: .85rem 1.6rem; font-weight: 800; cursor: pointer; }
.ob-newsletter__form button[type="submit"]:hover { background: var(--ob-river-deep); color: var(--ob-paper); }
.ob-newsletter__form .ob-newsletter__done { display: none; flex-basis: 100%; text-align: center; font-weight: 700; color: var(--ob-river-deep); margin: .5rem 0 0; }
.ob-newsletter__form.is-done .ob-newsletter__done { display: block; }
.ob-newsletter__form.is-done input, .ob-newsletter__form.is-done button { display: none; }

/* Product page --------------------------------------------------------------------------------------- */
/* No container query here: container-type: inline-size made the gallery's column collapse to 12 px in Elementor's
   stacked (phone) layout, the summary then lay on top of the photos. Plain aspect-ratio and % padding instead. */
.ob-gallery .woocommerce-product-gallery { margin: 0 !important; width: 100% !important; float: none !important; max-width: none !important; opacity: 1 !important; position: relative; }
.ob-gallery .woocommerce-product-gallery__image img, .ob-gallery .flex-viewport { border-radius: var(--ob-r-img); }
.ob-gallery .woocommerce-product-gallery__wrapper { margin: 0; }
.ob-gallery .woocommerce-product-gallery__wrapper img { width: 100%; height: auto; display: block; }
.ob-gallery .flex-control-thumbs { display: grid !important; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .75rem; margin: .75rem 0 0 !important; padding: 0; list-style: none; }
.ob-gallery .flex-control-thumbs li { width: auto !important; margin: 0 !important; }
.ob-gallery .flex-control-thumbs li { height: auto !important; }
/* Thumbnails are squares whatever the image or another stylesheet says: their row height is what the gallery reserves. */
.ob-gallery .flex-control-thumbs li img { border-radius: var(--ob-r-sm); opacity: .6; transition: opacity var(--ob-ease); cursor: pointer; display: block; width: 100%; height: auto !important; aspect-ratio: 1 / 1; object-fit: cover; }
.ob-gallery .flex-control-thumbs img.flex-active, .ob-gallery .flex-control-thumbs img:hover { opacity: 1; }
.ob-gallery .woocommerce-product-gallery__trigger { position: absolute; top: .75rem; right: .75rem; z-index: 99; width: 2.5rem; height: 2.5rem; display: grid; place-items: center; background: var(--ob-white); border-radius: var(--ob-r-pill); box-shadow: var(--ob-shadow-soft); text-indent: -9999px; overflow: hidden; }
.ob-gallery .woocommerce-product-gallery__trigger::before { content: ""; text-indent: 0; width: 1rem; height: 1rem; border: 2px solid var(--ob-ink); border-radius: 50%; box-sizing: border-box; }
/* The gallery has its final height from the first paint (a square image + a row of five square thumbnails). */
.ob-gallery .woocommerce-product-gallery:not(:has(.flex-viewport)) .woocommerce-product-gallery__image:nth-child(n+2) { display: none !important; }
.ob-gallery .woocommerce-product-gallery:not(:has(.flex-viewport)) .woocommerce-product-gallery__image:first-child { aspect-ratio: 1; overflow: hidden; border-radius: var(--ob-r-img); }
.ob-gallery .woocommerce-product-gallery:not(:has(.flex-viewport))::after { content: ""; display: block; padding-top: calc((100% - 3rem) / 5); margin-top: .75rem; }
.ob-gallery .flex-viewport { height: auto !important; aspect-ratio: 1; }
.ob-pdp__title.product_title { margin: 0 0 .25rem; font-size: var(--ob-fs-xxxl); letter-spacing: -0.015em; }
.ob-pdp__subtitle { margin: 0 0 var(--ob-s40); color: var(--ob-ink-soft); font-size: var(--ob-fs-lg); }
.ob-pdp__agechip { display: inline-flex; padding: .35rem .8rem; border-radius: var(--ob-r-pill); background: var(--ob-moss-pale); font-weight: 700; font-size: var(--ob-fs-sm); margin: 0; }
/* WooCommerce colours prices olive at (0,3,2) and .button.alt purple at (0,3,1): out-rank both. */
.ml-product.product p.price.ob-pdp__price, .ml-product.product .ob-buy .woocommerce-variation-price span.price { font-weight: 800; font-size: var(--ob-fs-xl); margin: 0; color: var(--ob-ink); }
.ob-pdp__excerpt p { margin: 0; }
.ob-buy form.cart { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin: 0; }
.ob-buy form.variations_form { display: block; }
.ob-buy table.variations { border: 0; margin: 0 0 var(--ob-s40); width: 100%; border-collapse: collapse; }
.ob-buy table.variations th, .ob-buy table.variations td { border: 0; padding: 0 0 .5rem; display: block; text-align: left; background: none; }
.ob-buy table.variations label { font-weight: 800; font-size: var(--ob-fs-xs); text-transform: uppercase; letter-spacing: .1em; }
.ob-buy .reset_variations { font-size: var(--ob-fs-xs); margin-left: .5rem; }
.ob-buy .woocommerce-variation-add-to-cart { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.ob-buy .woocommerce-variation-price { margin-bottom: .5rem; font-weight: 800; }
.ob-buy .quantity input.qty { width: 4.5rem; height: 3.5rem; padding: 0 .5rem; border: 1.5px solid var(--ob-line); border-radius: var(--ob-r-pill); text-align: center; font: inherit; font-weight: 700; background: var(--ob-white); }
.ob-buy button.single_add_to_cart_button.button.alt { background: var(--ob-river); color: var(--ob-white); border-radius: var(--ob-r-pill); border: 0; padding: 1rem 2.2rem; font-weight: 800; font-size: var(--ob-fs-md); flex: 1 1 auto; max-width: 22rem; min-height: 3.5rem; }
.ob-buy button.single_add_to_cart_button.button.alt:hover { background: var(--ob-river-deep); color: var(--ob-white); }
.ob-buy button.single_add_to_cart_button.button.alt.disabled { opacity: .55; cursor: not-allowed; background: var(--ob-river); }
/* Variation pills (the select stays the source of truth). */
.ob-pills { display: flex; flex-wrap: wrap; gap: .5rem; margin: .25rem 0 .5rem; }
.ob-pills button.ob-pill { appearance: none; border: 1.5px solid var(--ob-line); background: var(--ob-white); color: var(--ob-ink); border-radius: var(--ob-r-pill); padding: .6rem 1.2rem; font: inherit; font-weight: 700; font-size: var(--ob-fs-sm); line-height: 1.2; cursor: pointer; transition: border-color var(--ob-ease), background var(--ob-ease), color var(--ob-ease); }
.ob-pills button.ob-pill:hover { border-color: var(--ob-river); background: var(--ob-white); color: var(--ob-ink); }
.ob-pills button.ob-pill[aria-checked="true"] { background: var(--ob-ink); border-color: var(--ob-ink); color: var(--ob-paper); }
.ob-pills button.ob-pill:disabled { opacity: .4; cursor: not-allowed; text-decoration: line-through; }
.ob-has-pills select { position: absolute !important; width: 1px !important; height: 1px !important; opacity: 0; pointer-events: none; clip-path: inset(50%); visibility: hidden; }
.ob-pdp__meta { display: flex; flex-wrap: wrap; gap: .3rem 1.25rem; font-size: var(--ob-fs-xs); color: var(--ob-ink-soft); }
.ob-pdp__meta a { color: inherit; }
.ob-pdp__content { font-size: var(--ob-fs-md); }
.ob-pdp__content h2 { font-size: var(--ob-fs-xl); margin: var(--ob-s70) 0 var(--ob-s40); }
.ob-pdp__content > :first-child { margin-top: 0; }
.ob-pdp__content p, .ob-pdp__content li { max-width: 42rem; }
.ob-highlights { list-style: none; padding: var(--ob-s50) var(--ob-s60); margin: 0 0 var(--ob-s60); background: var(--ob-sand); border-radius: var(--ob-r-card); display: grid; gap: .6rem; }
.ob-highlights li { padding-left: 1.8rem; position: relative; font-weight: 600; }
.ob-highlights li::before { content: ""; position: absolute; left: 0; top: .3em; width: 1.1rem; height: 1.1rem; border-radius: 50%; background: var(--ob-river); }
.ob-highlights li::after { content: ""; position: absolute; left: .38rem; top: calc(.3em + .22rem); width: .32rem; height: .58rem; border: solid var(--ob-white); border-width: 0 2px 2px 0; transform: rotate(45deg); }
details.wp-block-details, details.ob-faq { border-bottom: 1px solid var(--ob-line); padding-block: var(--ob-s40); }
details.wp-block-details summary { font-weight: 800; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
details.wp-block-details summary::-webkit-details-marker { display: none; }
details.wp-block-details summary::after { content: "+"; font-family: var(--ob-display); font-size: 1.5em; line-height: .8; color: var(--ob-river); transition: transform var(--ob-ease); }
details.wp-block-details[open] summary::after { transform: rotate(45deg); }
details.wp-block-details > :not(summary) { margin-top: .75rem; color: var(--ob-ink-soft); }
.ob-specs { width: 100%; border-collapse: collapse; font-size: var(--ob-fs-sm); background: var(--ob-white); border-radius: var(--ob-r-card); overflow: hidden; border: 1px solid var(--ob-line); }
.ob-specs th, .ob-specs td { text-align: left; padding: .75rem 1rem; border: 0; border-bottom: 1px solid var(--ob-line); vertical-align: top; background: none; }
.ob-specs tbody th { width: 42%; font-weight: 800; color: var(--ob-ink); }
.ob-specs td p { margin: 0; }
.ob-specs tr:last-child th, .ob-specs tr:last-child td { border-bottom: 0; }
/* Elementor sets container position via var(--position) at (0,1,0)+: without .e-con the sticky top became a 140 px shift. */
@media (min-width: 782px) { .e-con.ob-sticky { position: sticky; top: calc(var(--ob-header-h) + 64px); align-self: flex-start; } }
@media (max-width: 781px) { .ob-pdp__title.product_title { font-size: var(--ob-fs-xxl); } }

/* Articles ----------------------------------------------------------------------------------------------- */
.ob-article__head .ob-article__kicker { display: flex; flex-wrap: wrap; gap: .5rem 1rem; font-size: var(--ob-fs-xs); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.ob-article__kicker a { text-decoration: none; color: var(--ob-river); }
.ob-article__head .ob-article__title { font-size: var(--ob-fs-xxxl); letter-spacing: -0.02em; margin: var(--ob-s40) 0; line-height: 1.06; }
.ob-article__head .ob-article__dek { color: var(--ob-ink-soft); margin: 0 0 var(--ob-s50); font-size: var(--ob-fs-lg); }
.ob-article__byline { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem; font-size: var(--ob-fs-sm); color: var(--ob-ink-soft); }
.ob-article__byline .ob-article__author { font-weight: 800; color: var(--ob-ink); }
.ob-avatar { border-radius: 50%; flex-shrink: 0; }
.ob-hero-image { margin: 0; }
/* Elementor resets .elementor img { border-radius: 0 } at (0,1,1): image rules here carry a second class or element. */
figure.ob-hero-image img { width: 100%; height: auto; object-fit: cover; border-radius: var(--ob-r-img); display: block; }
.ml-article { font-size: var(--ob-fs-md); }
.ml-article > p:first-child { font-size: var(--ob-fs-lg); }
.ml-article h2 { margin-top: var(--ob-s70); font-size: var(--ob-fs-xxl); }
.ml-article h3 { margin-top: var(--ob-s60); }
.ml-article li { margin-bottom: .45rem; }
div.ml-article img { border-radius: var(--ob-r-img); }
.ml-article .wp-block-table { margin-block: var(--ob-s60); overflow-x: auto; }
.ml-article.is-wide { max-width: none; }
.wp-block-table table { border-collapse: collapse; width: 100%; background: var(--ob-white); border-radius: var(--ob-r-card); overflow: hidden; }
.wp-block-table th { background: var(--ob-sand); text-align: left; font-weight: 800; }
.wp-block-table th, .wp-block-table td { padding: .75rem 1rem; border: 0; border-bottom: 1px solid var(--ob-line); }
.ob-tags a { color: var(--ob-river); }
.ob-authorbox { display: flex; gap: var(--ob-s50); padding: var(--ob-s60); background: var(--ob-white); border: 1px solid var(--ob-line); border-radius: var(--ob-r-card); align-items: flex-start; }
.ob-authorbox .ob-authorbox__name { margin: 0; font-weight: 800; font-size: var(--ob-fs-lg); }
.ob-authorbox .ob-authorbox__name a { text-decoration: none; color: var(--ob-ink); }
.ob-authorbox .ob-authorbox__bio { margin: .35rem 0 0; color: var(--ob-ink-soft); font-size: var(--ob-fs-sm); }

/* Store pages (cart, checkout panel) and demo notices -------------------------------------------------- */
.ob-demo-notice { background: var(--ob-bloom-pale); border: 1px solid var(--ob-bloom); border-radius: var(--ob-r-card); padding: 1rem 1.25rem; font-weight: 700; margin-block: var(--ob-s50); }
.ob-demo-checkout { text-align: center; padding-block: var(--ob-s60); }
.ob-demo-checkout .wp-block-buttons { justify-content: center; display: flex; gap: .75rem; flex-wrap: wrap; }
.ob-demo-checkout .wp-block-button__link { display: inline-block; background: var(--ob-river); color: var(--ob-white); border-radius: var(--ob-r-pill); padding: .85rem 1.6rem; font-weight: 700; text-decoration: none; }
.wc-block-components-button:not(.is-link) { border-radius: var(--ob-r-pill) !important; background: var(--ob-river); color: var(--ob-white); font-weight: 800; }
.wc-block-components-button:not(.is-link):hover { background: var(--ob-river-deep); }
.wc-block-components-totals-wrapper, .wc-block-components-sidebar { font-size: var(--ob-fs-sm); }
.wp-block-woocommerce-cart-cross-sells-block .wc-block-components-product-name { font-family: var(--ob-display); color: var(--ob-ink); text-decoration: none; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; scroll-behavior: auto !important; } }

/* Home page sections ------------------------------------------------------------------------------------- */
.ob-story .ob-story__img img { border-radius: var(--ob-r-img); aspect-ratio: 4 / 3; object-fit: cover; width: 100%; display: block; }
.ob-ageband .elementor-heading-title { margin: 0; }
.ob-hero .elementor-widget-text-editor p:last-child { margin-bottom: 0; }
.ob-hero .ob-hero__panel .elementor-heading-title { letter-spacing: -0.02em; }
.ob-section__head .elementor-widget-heading .elementor-heading-title { margin: 0; }
.ob-section__head .elementor-widget-text-editor p { margin: 0; }

/* Links inside written content are underlined (as on the block site); navigation, cards and buttons are not. */
.elementor-widget-text-editor a:not(.elementor-button), div.ml-article a, .ob-pdp__content a, details.ob-faq a { text-decoration: underline; text-underline-offset: 2px; }
.ob-section__link a, .ob-footer .elementor-widget-text-editor a { text-decoration: none; }
.ob-footer .ob-footer__base .elementor-widget-text-editor a { text-decoration: underline; }

/* Product page layout. */
.ob-pdp .ob-pdp__body { border-top: 1px solid var(--ob-line); }
.ob-pdp__summary .ob-promise { margin: .5rem 0; }
.ob-related .elementor-widget-heading .elementor-heading-title { margin: 0; }

/* Forms in centred sections take the width they need (a shrink-wrapped widget stacked input and button). */
.elementor-widget-mathlab-newsletter, .elementor-widget-mathlab-search:has(.ob-search.is-open) { align-self: stretch; }
.ob-search.is-open { justify-content: center; }
.ob-search.is-open .ob-search__input { flex: 1 1 16rem; max-width: 26rem; }