.materials-page .breadcrumbs{display:flex;flex-wrap:wrap;gap:10px;font-size:13px;line-height:1.6;margin:0 0 37px;color:#69829a;max-width:100%;overflow-wrap:anywhere}.breadcrumbs a{color:var(--blue)}.breadcrumbs a:hover{text-decoration:underline}.breadcrumbs>span[aria-current]{color:#375777}
.catalog-hero,.product-hero{padding:30px 0 47px;background:#f2f7fc;border-bottom:1px solid var(--line)}.catalog-hero h1{font-size:51px;max-width:900px}.catalog-lead{font-size:19px;line-height:1.55;max-width:800px;margin-top:20px;color:#476785}.catalog-stats{display:flex;gap:30px;align-items:center;margin-top:28px;color:#4f6d86;font-size:15px}.catalog-stats strong{font:600 28px var(--serif);color:var(--navy);margin-right:5px}.catalog-stats>span+span{border-left:1px solid #cbdbe9;padding-left:30px}.catalog-nav{display:flex;gap:12px;margin-top:30px}.catalog-nav a{display:block;padding:10px 20px;background:#fff;border:1px solid #cddfea;border-radius:5px;font-size:14px}.catalog-nav a:hover{border-color:#6f94b2}
.catalog-disciplines{display:grid;grid-template-columns:1fr 1fr;gap:15px}.catalog-discipline{display:grid;grid-template-columns:27px 1fr;gap:15px;background:#fff;border:1px solid var(--line);border-radius:7px;padding:25px;transition:border-color .15s}.catalog-discipline:hover{border-color:#8eacc2}.catalog-index{display:grid;place-items:center;width:27px;height:27px;border-radius:50%;background:#0b3b64;color:#fff;font-size:12px;flex-shrink:0}.catalog-discipline h3{font-size:24px;line-height:1.24}.catalog-discipline p{font-size:13px;margin-top:12px;color:#6f8496}.catalog-price{grid-column:2;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:6px}.catalog-price strong{font:600 29px var(--serif);color:var(--navy)}.catalog-price>span{font-size:13px;color:var(--blue)}
.product-hero h1{max-width:1020px;font-size:49px;line-height:1.12}.product-count{font-size:23px;color:var(--navy);margin-top:23px}.product-hero .catalog-lead{font-size:17px;max-width:900px}.full-product{background:#f2f7ed}.product-main{padding-top:48px}.product-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:55px;align-items:start}.composition h2{font-size:35px}.composition-meta{margin-top:12px!important;margin-bottom:27px;font-size:15px}.composition>p:not(.composition-meta){font-size:17px}.composition-list{background:#f4f8fc;border:1px solid #e3edf5;border-radius:7px;padding:5px 22px}.composition-list>a{display:flex;align-items:center;gap:16px;padding:17px 0;border-bottom:1px solid var(--line);font-size:16px;color:#244d75}.composition-list>a:last-child{border:0}.composition-list>a>span:nth-child(2){flex:1;line-height:1.4}.composition-list small{display:block;font-size:13px;color:#6a8398;margin-top:5px}.composition-list a:hover>span:nth-child(2){color:#0870b5}.order-card{border:1px solid var(--line);padding:30px;background:#fff;border-radius:8px;box-shadow:0 12px 30px #183b5609;position:sticky;top:25px}.full-order{background:#f4f8ef;border-color:#b1c99c}.order-price{font:650 49px/1.1 var(--serif);color:var(--navy)}.order-compare{font-size:14px;margin-top:14px}.saving{background:#e3efd7;color:#476239;font-size:14px;padding:9px 13px;border-radius:4px;margin-top:16px}.order-card .button{width:100%;margin-top:24px;font-size:16px}.full-order .button{background:#50743d;border-color:#50743d}.order-facts{list-style:none;margin:24px 0 0;padding:0;border-top:1px solid var(--line)}.order-facts li{display:flex;gap:13px;align-items:flex-start;font-size:14px;color:#4a6781;margin-top:20px}.order-facts svg{width:23px;height:23px;flex-shrink:0;color:var(--navy)}.order-card .fine{font-size:13px}.included{margin-top:32px;border-top:1px solid var(--line);padding-top:23px}.included h3{font-size:26px;margin-bottom:13px}.included a{display:flex;gap:15px;padding:16px 0;border-bottom:1px solid var(--line);align-items:center;font-size:15px}.included a span:first-child{flex:1}.included strong{white-space:nowrap;font-weight:550;color:var(--navy)}.product-format{padding-top:0}.product-format h2{margin-bottom:30px}.sample-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}.sample-card{display:grid;grid-template-columns:150px 1fr;gap:25px;align-items:center;background:white;border:1px solid var(--line);border-radius:7px;padding:24px;overflow:hidden}.sample-card>img{width:150px;box-shadow:0 8px 18px #12355715;transform:rotate(-3deg)}.sample-card h3{font-size:25px}.sample-card .eyebrow{display:block;font-size:10px;margin-bottom:13px}.sample-action{display:block;margin-top:20px;color:var(--blue);font-size:14px}.sample-card:hover .sample-action{text-decoration:underline}.back-to-catalog{display:flex;justify-content:space-between;align-items:center;gap:25px}
@media(max-width:999px){.product-grid{gap:30px;grid-template-columns:1.15fr 1fr}.order-card{padding:23px;position:static}.product-hero h1{font-size:41px}.catalog-discipline{padding:22px}.sample-grid{grid-template-columns:1fr}.sample-card{max-width:650px;width:100%}.product-format .three{grid-template-columns:1fr}.catalog-hero h1{font-size:44px}.composition-list{padding:4px 15px}.composition-list>a{gap:12px}.composition h2{font-size:31px}}
@media(max-width:699px){.materials-page .breadcrumbs{font-size:12px;margin-bottom:25px;gap:7px}.catalog-hero,.product-hero{padding:22px 0 32px}.catalog-hero h1,.product-hero h1{font-size:clamp(30px,7.8vw,39px);letter-spacing:-.6px}.catalog-lead{font-size:17px}.catalog-stats{flex-wrap:wrap;gap:15px 20px;margin-top:23px}.catalog-stats>span+span{padding-left:20px}.catalog-stats>span:last-child{width:100%;padding-left:0;border:0}.catalog-nav{gap:10px}.catalog-nav a{padding:11px 14px;font-size:14px}.catalog-disciplines{grid-template-columns:1fr}.catalog-discipline{padding:22px 18px;gap:13px}.catalog-discipline h3{font-size:23px}.catalog-discipline p{font-size:14px}.catalog-price>span{font-size:14px}.product-count{font-size:19px;margin-top:20px}.product-hero .catalog-lead{font-size:16px}.product-main{padding-top:28px}.product-grid{grid-template-columns:1fr;gap:32px}.order-card{grid-row:1;padding:24px}.composition h2{font-size:30px}.composition-list>a{font-size:16px;padding:17px 0}.composition-list small{font-size:14px}.order-price{font-size:45px}.product-format h2{font-size:30px}.sample-card{grid-template-columns:95px 1fr;gap:18px;padding:20px 16px}.sample-card>img{width:95px}.sample-card h3{font-size:22px}.sample-card .eyebrow{font-size:9px;letter-spacing:1px}.sample-action{font-size:14px;margin-top:15px}.back-to-catalog{flex-direction:column;align-items:stretch}.included a{flex-wrap:wrap}.included a span:first-child{min-width:60%}}

/* Editorial photography shared by catalog, products and information pages. */
.catalog-hero,.product-hero{--hero-surface:#f2f7fc;overflow:hidden}.full-product{--hero-surface:#f2f7ed}
.inner-hero-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:center;gap:52px}
.inner-hero-copy{min-width:0;position:relative;z-index:1}.inner-hero-copy h1{font-size:clamp(34px,3.4vw,48px);line-height:1.13;overflow-wrap:break-word}
.inner-hero-image{position:relative;margin:-24px -36px -30px -70px;align-self:stretch;min-height:340px;max-height:460px;border-radius:0;overflow:hidden;border:0;box-shadow:none;background:var(--hero-surface)}
.inner-hero-image:after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,var(--hero-surface) 0%,transparent 30%,transparent 86%,var(--hero-surface) 100%),linear-gradient(180deg,var(--hero-surface) 0%,transparent 15%,transparent 78%,var(--hero-surface) 100%)}
.inner-hero-image img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover;object-position:center}
.inner-hero-copy .catalog-stats{gap:17px;flex-wrap:wrap}.inner-hero-copy .catalog-stats>span+span{padding-left:17px}.inner-hero-copy .catalog-stats>span:last-child{width:100%;padding-left:0;border:0}
@media(max-width:999px){.inner-hero-grid{gap:28px;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)}.inner-hero-copy h1{font-size:36px}.inner-hero-image{min-height:310px;margin:-18px -24px -24px -40px}.inner-hero-copy .catalog-lead{font-size:17px}}
@media(max-width:699px){.inner-hero-grid{grid-template-columns:1fr;gap:28px}.inner-hero-copy h1{font-size:clamp(30px,7.8vw,39px)}.inner-hero-image{min-height:260px;max-height:300px;margin:-8px -24px -20px}.inner-hero-image img{height:100%;object-position:center 42%}.inner-hero-image:after{background:linear-gradient(90deg,var(--hero-surface),transparent 12%,transparent 88%,var(--hero-surface)),linear-gradient(180deg,var(--hero-surface),transparent 18%,transparent 76%,var(--hero-surface))}.inner-hero-copy .catalog-stats{gap:15px 20px}}

.header nav a[aria-current="page"]{color:var(--navy);text-decoration:underline;text-underline-offset:8px;text-decoration-thickness:2px}
.editorial-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:80px}.editorial-copy p{font-size:17px;line-height:1.8}.editorial-copy .lead{font-size:23px;line-height:1.5}.editorial-copy .text-link{display:inline-block;margin-top:25px}.about-foundations{gap:30px}.about-foundations article{border-top:1px solid #bfd2e1;padding-top:24px}.about-foundations h3{font:600 28px/1.2 var(--serif);margin:14px 0 18px}.about-foundations p{font-size:16px}.faq-page-layout{display:grid;grid-template-columns:310px minmax(0,1fr);gap:70px;align-items:start}.faq-note{position:sticky;top:calc(var(--header-height) + 28px);padding:27px;background:var(--pale);border:1px solid var(--line);border-radius:6px}.faq-note h2{font-size:30px}.faq-note p{font-size:16px;margin:19px 0 23px}.faq-full summary{font-size:19px;padding-top:25px;padding-bottom:25px}.faq-full details p{font-size:17px;line-height:1.75;padding-bottom:25px}.back-to-catalog .actions{margin-top:0}
@media(max-width:999px){.editorial-grid{gap:35px}.faq-page-layout{grid-template-columns:1fr;gap:30px}.faq-note{position:static}.about-foundations{grid-template-columns:1fr}.about-foundations article{padding-top:20px}.back-to-catalog{flex-wrap:wrap}}
@media(max-width:699px){.editorial-grid{grid-template-columns:1fr;gap:26px}.editorial-copy .lead{font-size:21px}.faq-full summary{font-size:17px}.faq-full details p{font-size:16px}.back-to-catalog .actions{flex-direction:column;align-items:stretch}.faq-note{padding:24px}}

/* Shared navigation stays distinct and visible on every page. */
:root{--header-height:86px}
html{scroll-padding-top:calc(var(--header-height) + 24px)}
body>header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #d2e0eb;box-shadow:0 4px 16px #0b345a0b}
.header nav{background:#fff}.order-card{top:calc(var(--header-height) + 24px)}
[id]{scroll-margin-top:8px}
@media(max-width:999px){:root{--header-height:78px}.header nav{max-height:calc(100dvh - var(--header-height));overflow-y:auto}.order-card{position:static}}
@media(max-width:599px){:root{--header-height:72px}}

/* Complete examples and official searchable question list. */
[hidden]{display:none!important}
.source-row{display:flex;gap:24px;flex-wrap:wrap;font-size:14px;color:#688197;margin-top:24px}.source-row a{color:var(--blue);text-decoration:underline;text-underline-offset:4px}.download-questions{margin-top:27px}
.sample-reader{display:grid;grid-template-columns:290px minmax(0,1fr);gap:45px;align-items:start}.sample-selector{display:flex;flex-direction:column;gap:14px;position:sticky;top:calc(var(--header-height) + 24px)}.sample-tab{border:1px solid var(--line);background:#f5f9fc;border-radius:7px;padding:24px;text-align:left;color:var(--navy)}.sample-tab.selected{background:#fff;border-color:#779bb8;box-shadow:0 8px 20px #1235570a}.sample-tab small{display:block;font-size:11px;letter-spacing:1px;color:#668299}.sample-tab span{display:block;font:600 25px/1.23 var(--serif);margin-top:14px}.sample-tab em{display:block;font-size:13px;font-style:normal;color:#6c8397;margin-top:16px}.reader-heading{display:flex;align-items:flex-start;gap:22px;justify-content:space-between;margin-bottom:27px}.reader-heading h2{font-size:30px;flex:1}.reader-heading .button{flex-shrink:0}.readable-page{display:block;background:white;border:1px solid var(--line);box-shadow:0 9px 28px #12355710;margin-top:25px}.readable-page img{width:100%}
.question-filters{display:grid;grid-template-columns:1.15fr 1fr auto;gap:20px;align-items:end;background:#f3f8fc;border:1px solid var(--line);padding:24px;border-radius:8px}.question-filters>div{min-width:0}.question-filters label{display:block;font-size:14px;color:var(--navy);margin-bottom:9px}.question-filters input,.question-filters select{display:block;width:100%;max-width:100%;height:52px;border:1px solid #b9cfdf;border-radius:4px;padding:12px;font:16px var(--sans);color:var(--navy);background:#fff}.question-filters select{text-overflow:ellipsis;padding-right:25px}.question-filters input:focus-visible,.question-filters select:focus-visible{outline:2px solid var(--blue);outline-offset:2px}.question-result{font-size:14px;margin-top:20px;color:#617d94}.question-group{margin-top:45px}.question-group-heading{display:flex;flex-wrap:wrap;gap:15px 25px;align-items:baseline;border-bottom:2px solid #bcd2e4;padding-bottom:18px}.question-group-heading h2{font-size:31px;flex:1;min-width:50%}.question-group-heading>span{font-size:14px;color:#67839b;white-space:nowrap}.question-group-heading>a{font-size:14px;color:var(--blue)}.question-list{list-style:none;padding:0;margin:0}.question-list li{display:flex;gap:23px;padding:19px 5px;border-bottom:1px solid var(--line);align-items:baseline}.question-number{font:600 19px var(--serif);min-width:30px;color:#517594}.question-list p{font-size:16px;color:#254b6d;line-height:1.65}.question-empty{padding:65px 20px;text-align:center}.question-empty h2{font-size:32px}.question-empty p{margin-top:18px}.question-empty .button{margin-top:25px}
@media(max-width:999px){.sample-reader{grid-template-columns:1fr;gap:28px}.sample-selector{position:static;display:grid;grid-template-columns:1fr 1fr}.sample-tab{padding:22px}.sample-document{min-width:0}.question-filters{grid-template-columns:1fr 1fr}.question-filters>.button{grid-column:1/-1;justify-self:start}.reader-heading h2{font-size:29px}}
@media(max-width:599px){.sample-selector{grid-template-columns:1fr;gap:10px}.sample-tab{padding:19px}.sample-tab span{font-size:23px;margin-top:10px}.sample-tab small{font-size:10px}.sample-tab em{margin-top:10px}.reader-heading{flex-direction:column;align-items:stretch;gap:20px}.reader-heading h2{font-size:26px}.readable-page{margin-top:18px}.question-filters{grid-template-columns:1fr;padding:20px;gap:18px}.question-filters>.button{justify-self:stretch}.question-group{margin-top:32px}.question-group-heading{gap:10px 20px}.question-group-heading h2{font-size:27px;flex-basis:100%}.question-list li{gap:13px;padding:17px 0}.question-number{min-width:26px;font-size:18px}.question-list p{font-size:16px;line-height:1.6}.source-row{gap:12px;font-size:14px}.download-questions{display:flex;width:100%;font-size:14px}.question-empty{padding:45px 0}.question-empty h2{font-size:28px}}

.contact-email{display:inline-block;margin-top:27px;font-size:clamp(19px,2.4vw,30px);color:var(--navy);text-decoration:underline;text-decoration-color:#adc4d7;text-underline-offset:7px;overflow-wrap:anywhere;max-width:100%}.contact-email:hover{color:var(--blue)}

.checkout-notice{margin:25px 0 36px;padding:16px 20px;background:#f5f8fb;border-left:3px solid #9db9ce;font-size:15px;max-width:900px}.checkout-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}.checkout-grid h2{font-size:31px}.checkout-grid h2+p{margin-top:15px}.checkout-label{display:block;margin:25px 0 9px;font-size:15px}.checkout-email{width:100%;max-width:480px;height:54px;border:1px solid #b9cfdf;border-radius:5px;padding:13px 15px;font:16px var(--sans);color:var(--ink)}.checkout-email:focus-visible{outline:2px solid var(--blue);outline-offset:3px}.checkout-delivery{border-top:1px solid var(--line);margin:32px 0;padding-top:25px}.checkout-delivery h3{font:600 25px var(--serif);margin-bottom:16px}.checkout-list{padding-left:20px;margin:0 0 20px}.checkout-list li{font-size:15px;margin-bottom:12px}.checkout-list small{display:block;color:var(--muted)}.checkout-total{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:28px}.checkout-total strong{font:600 38px var(--serif);color:var(--navy)}.checkout-grid .button:disabled{background:#dbe4eb;color:#526c81;border-color:#dbe4eb;cursor:not-allowed;transform:none}.checkout-grid .order-card>.text-link{display:inline-block;margin-top:20px}
@media(max-width:799px){.checkout-grid{grid-template-columns:1fr;gap:35px}.checkout-grid .order-card{grid-row:1}.checkout-grid h2{font-size:28px}}

/* Compact question groups; native disclosure works with keyboard and without JS. */
.question-group{margin-top:16px;border:1px solid var(--line);border-radius:6px;overflow:hidden}.question-group:first-child{border-top:1px solid var(--line)}.question-group-heading{position:relative;margin:0;padding:22px 56px 22px 24px;background:#f3f8fc;border:0;cursor:pointer;align-items:center}.question-group-heading h2{font-size:27px;line-height:1.25}.question-group-heading:after{content:'+';right:23px;top:50%;transform:translateY(-50%);font-size:26px}.question-group[open]>.question-group-heading:after{content:'−'}.question-group[open]>.question-group-heading{border-bottom:1px solid var(--line)}.question-group-body{padding:20px 24px 6px}.question-collection{display:inline-block;margin-bottom:12px}.question-group .question-list p{padding:0;margin:0}.question-list li:last-child{border:0}
@media(max-width:699px){.question-group-heading{padding:19px 43px 19px 18px;gap:8px}.question-group-heading h2{font-size:23px;flex-basis:100%}.question-group-heading:after{right:16px}.question-group-body{padding:17px 18px 4px}}

.checkout-main{padding-top:36px}.checkout-main .checkout-notice{margin-top:0;max-width:none}.delivery-preview-link{display:block!important;border-top:1px solid var(--line);padding-top:18px}.delivery-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:50px;align-items:start}.delivery-files{list-style:none;padding:0;margin:28px 0 0}.delivery-files li{display:flex;align-items:center;gap:20px;justify-content:space-between;padding:22px 0;border-bottom:1px solid var(--line)}.delivery-files h3{font:600 23px/1.3 var(--serif)}.delivery-files p{font-size:14px;margin-top:7px}.delivery-files button{flex-shrink:0}.delivery-files button:disabled{background:#edf2f6;border-color:#dbe4eb;color:#637c91;cursor:not-allowed;transform:none}.delivery-help{padding:28px;background:var(--pale);border:1px solid var(--line);border-radius:6px}.delivery-help h2{font-size:29px}.delivery-help p{margin-top:18px;font-size:16px}.delivery-help a{display:inline-block;margin-top:23px}.delivery-heading{font-size:34px}.delivery-back{margin-top:30px}
@media(max-width:799px){.delivery-layout{grid-template-columns:1fr;gap:30px}.delivery-files li{flex-wrap:wrap}.delivery-files h3{font-size:22px}.delivery-heading{font-size:29px}}

.checkout-email[aria-invalid="true"]{border-color:#b43e3e;background:#fffafa}.checkout-email[aria-invalid="true"]:focus-visible{outline-color:#b43e3e}.checkout-grid .field-error{color:#a32f2f}.checkout-label>span{color:#a32f2f}