:root {
  --navy: #0a1f3d; --blue: #1f5fd6; --blue-hover: #174bac; --mint: #2ec4b6;
  --ink: var(--navy); --muted: #52647a; --paper: #fff; --surface: #f1f5f8;
  --ice: #e8eff5; --line: #d5dfe8; --control-line: #78889a; --on-dark: #c3d2e3;
  --mint-pale: #e2f5f1; --error: #a02d36; --error-bg: #fff3f3;
  --font-body: 'Figtree', sans-serif; --font-heading: 'Outfit', sans-serif; --font-mono: ui-monospace, SFMono-Regular, Consolas, monospace;
  --brand-gradient: linear-gradient(115deg, var(--blue), var(--mint));
  --text-caption: .75rem; --text-small: .875rem; --text-body: 1rem; --text-lead: clamp(1.125rem, 1.5vw, 1.25rem);
  --text-hero: clamp(2.75rem, 6.5vw, 6rem); --text-h1: clamp(2.75rem, 5.3vw, 4.75rem); --text-h2: clamp(2.125rem, 3.9vw, 3.5rem); --text-h3: clamp(1.375rem, 2vw, 1.75rem);
  --space-1: .5rem; --space-2: 1rem; --space-3: 1.5rem; --space-4: 2rem; --space-5: 3rem; --space-6: 4.5rem; --space-7: 5.5rem;
  --card-padding: var(--space-4); --section-padding: var(--space-7); --radius: .25rem; --content: 1248px; --gutter: clamp(1.25rem, 4.4vw, 4rem);
  --ease: cubic-bezier(.16,1,.3,1);
  --whatsapp-size: 56px; --whatsapp-gap: 24px;
  --whatsapp-clearance: calc(var(--whatsapp-size) + var(--whatsapp-gap) + 16px + env(safe-area-inset-bottom, 0px));
}
* { box-sizing: border-box; }
html { scroll-behavior: auto; scroll-padding-top: 2rem; scroll-padding-bottom: var(--whatsapp-clearance); scrollbar-color: var(--muted) var(--surface); }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 var(--text-body)/1.65 var(--font-body); -webkit-font-smoothing: antialiased; }
::selection { background: var(--mint); color: var(--navy); }
a { color: inherit; text-underline-offset: .22em; text-decoration-thickness: 1px; }
a:is(:hover, :active) { color: var(--link-hover, var(--blue)); }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
img { display: block; width: 100%; height: 100%; object-fit: cover; }
figure, dl { margin: 0; }
svg { flex-shrink: 0; }
:focus-visible { outline: 3px solid var(--focus-ring, var(--blue)); outline-offset: 4px; }
:is(.site-footer, .quote-band, .size-feature, .hero-band, .hero-technical, .contact-details, .skip-link) { --link-hover: var(--mint); --focus-ring: var(--mint); }
[hidden] { display: none !important; }
h1,h2,h3 { font-family: var(--font-heading); font-weight: 500; line-height: 1.1; letter-spacing: -.03em; text-wrap: balance; margin: 0 0 var(--space-3); }
h1 { color: var(--navy); font-size: var(--text-h1); max-width: 20ch; }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); letter-spacing: -.015em; }
p { margin: 0 0 var(--space-3); max-width: 70ch; }
p:last-child { margin-bottom: 0; }
address { font-style: normal; }
.container { width: min(var(--content), calc(100% - var(--gutter) * 2)); margin-inline: auto; }
.section-space { padding-block: var(--section-padding); }
.icon { width: 22px; height: 22px; }
.technical-label { font-size: var(--text-small); font-weight: 500; font-variant-numeric: tabular-nums; color: var(--muted); }
.lead { color: var(--muted); font-size: var(--text-lead); line-height: 1.6; }
.skip-link { position: fixed; z-index: 100; inset-block-start: .5rem; inset-inline-start: 1rem; padding: var(--space-1) var(--space-3); background: var(--navy); color: var(--paper); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); color: var(--paper); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 1rem; min-height: 48px; padding: var(--space-1) var(--space-3); border: 1px solid transparent; border-radius: var(--radius); background: var(--blue); color: var(--paper); font-size: var(--text-body); font-weight: 600; text-decoration: none; line-height: 1.4; }
.button:hover { color: var(--paper); background: var(--blue-hover); }
.button:active { background: var(--navy); color: var(--paper); }
.button:disabled { background: var(--muted); cursor: not-allowed; }
.button-outline { background: transparent; border-color: var(--control-line); color: var(--navy); }
.button-outline:hover { background: var(--navy); border-color: var(--navy); }
.button-light { background: var(--mint); color: var(--navy); }
.button-light:hover { background: var(--paper); color: var(--navy); }
.button-light:active { background: var(--mint-pale); color: var(--navy); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }
.text-link { display: inline-flex; align-items: center; justify-content: space-between; gap: var(--space-3); min-height: 44px; font-weight: 600; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.site-header { background: var(--paper); border-bottom: 1px solid var(--line); position: relative; z-index: 10; }
.header-inner { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: block; flex-shrink: 0; }
.logo-frame { display: block; width: 218px; aspect-ratio: 836/200; }
.logo-frame img { object-fit: contain; }
.primary-nav { display: flex; align-items: center; gap: 2rem; }
.primary-nav > a:not(.button), .nav-products > a { text-decoration: none; font-size: var(--text-small); font-weight: 500; padding-block: var(--space-2); }
.primary-nav a[aria-current="page"] { color: var(--blue); text-decoration: underline; text-underline-offset: .5rem; }
.nav-products { display: flex; align-items: center; position: relative; gap: 0; }
.submenu-toggle { display: grid; place-items: center; min-width: 44px; min-height: 44px; padding: 0; border: 0; background: none; color: var(--navy); }
.chevron { width: 16px; }
.submenu-toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.product-menu { display: none; position: absolute; top: 100%; inset-inline-start: -.8rem; width: 270px; background: var(--paper); border: 1px solid var(--line); padding: .5rem; }
.product-menu a { display: block; padding: var(--space-1) var(--space-2); text-decoration: none; }
.product-menu a:hover { color: var(--blue); }
.nav-products.is-open .product-menu, html:not(.js) .nav-products:focus-within .product-menu, html:not(.js) .nav-products:hover .product-menu { display: block; }
.menu-toggle { display: none; }
.nav-quote { font-size: var(--text-small); }
.breadcrumb { padding-block: var(--space-3) 0; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: var(--space-1); list-style: none; padding: 0; margin: 0; color: var(--muted); font-size: var(--text-small); }
.breadcrumb li:not(:last-child)::after { content: '/'; padding-inline-start: var(--space-1); color: var(--control-line); }
.breadcrumb a { display: inline-block; min-height: 44px; }
.breadcrumb a:hover { color: var(--blue); }
.home-hero { padding-block: var(--space-5) 0; }
.hero-heading { padding-bottom: var(--space-5); }
.hero-heading h1 { font-size: var(--text-hero); max-width: 25ch; line-height: 1.02; margin: 0; }
.hero-heading h1 span { display: block; font-weight: 400; }
.hero-image { position: relative; }
.photo-frame { position: relative; overflow: hidden; background: var(--navy); }
.photo-frame img { position: absolute; inset: 0; object-fit: cover; object-position: var(--photo-position, 50% 50%); }
.hero-photo { aspect-ratio: 16/6; --photo-position: 55% 65%; }
.hero-band { position: relative; padding: var(--space-4) 0; padding-block: var(--space-4); background: var(--navy); color: var(--paper); }
.hero-band-inner { display: flex; justify-content: space-between; align-items: center; gap: var(--space-5); }
.hero-authorisation { color: var(--paper); margin-bottom: var(--space-1); font-size: var(--text-small); font-weight: 600; }
.hero-band .lead { color: var(--on-dark); max-width: 56ch; margin: 0; font-size: var(--text-lead); }
.hero-band .actions { flex-shrink: 0; }
.button-inverse { background: transparent; border-color: var(--on-dark); color: var(--paper); }
.button-inverse:is(:hover, :active) { background: var(--paper); color: var(--navy); }
.hero-technical { background: var(--navy); color: var(--on-dark); border-top: 1px solid var(--muted); padding: var(--space-3) 0; padding-block: var(--space-3); }
.hero-technical > div { display: flex; justify-content: space-between; gap: var(--space-3); font: 400 var(--text-caption)/1.6 var(--font-mono); }
.range-strip { background: var(--surface); border-block: 1px solid var(--line); padding: var(--space-4) 0; padding-block: var(--space-4); }
.range-strip-inner { display: grid; grid-template-columns: 1fr 1.3fr auto; align-items: center; gap: var(--space-4); }
.range-strip p { margin: 0; color: var(--muted); font-size: var(--text-small); }
.range-strip strong { color: var(--navy); font-weight: 500; }
.range-strip a { display: flex; align-items: center; gap: 2rem; font-weight: 600; min-height: 44px; text-decoration: none; }
.section-heading { display: grid; grid-template-columns: 1fr 1.2fr; gap: 6rem; }
.section-heading > p { color: var(--muted); font-size: var(--text-lead); }
.size-feature { background: var(--navy); color: var(--paper); position: relative; }
.size-feature::before { content: ''; position: absolute; inset: 0 0 auto; height: 2px; background: var(--brand-gradient); }
.scale-layout { display: grid; grid-template-columns: .7fr 1.5fr; gap: var(--space-6); align-items: center; }
.scale-layout p { color: var(--on-dark); }
.size-feature a:hover, .size-feature a:focus-visible { color: var(--mint); }
.diameter-scale { --unit: clamp(2.6px,.25vw,3.6px); --disc-surface: var(--paper); display: flex; align-items: end; justify-content: space-between; gap: var(--space-1); }
.size-feature .diameter-scale { --disc-surface: var(--navy); }
.scale-item { display: flex; flex-direction: column; align-items: center; min-width: 44px; gap: var(--space-2); font-family: var(--font-heading); text-decoration: none; font-size: var(--text-h3); font-variant-numeric: tabular-nums; padding: var(--space-2) 0; padding-block: var(--space-2); }
.scale-track { display: flex; align-items: end; justify-content: center; height: calc(50 * var(--unit)); }
.scale-disc { width: calc(var(--diameter) * var(--unit)); aspect-ratio: 1; border-radius: 50%; border: 1.75px solid transparent; background: linear-gradient(var(--disc-surface), var(--disc-surface)) padding-box, var(--brand-gradient) border-box; position: relative; }
.scale-disc::after { content: ''; position: absolute; inset: 12%; border-radius: 50%; border: 1px solid var(--control-line); opacity: .45; }
.scale-item small { font-family: var(--font-heading); font-size: var(--text-small); color: var(--muted); }
.size-feature .scale-item small { color: var(--on-dark); }
.scale-caption { font: 400 var(--text-caption)/1.6 var(--font-mono); color: var(--muted); text-align: right; padding-top: var(--space-2); margin-top: var(--space-2); border-top: 1px solid var(--control-line); }
.products-hub { padding-block: 0; }
.products-section { background: var(--surface); }
.section-title-row { display: flex; align-items: baseline; justify-content: space-between; gap: 2rem; margin-bottom: 2.5rem; }
.section-title-row h2, .section-title-row p { margin: 0; }
.range-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.range-card { min-width: 0; container-type: inline-size; display: flex; flex-direction: column; }
.range-image { position: relative; display: block; overflow: hidden; background: var(--ice); text-decoration: none; }
.range-tag { padding: .2rem .5rem; border-radius: var(--radius); background: var(--paper); position: absolute; inset-inline-start: var(--space-3); inset-block-start: var(--space-3); color: var(--muted); font-size: var(--text-small); }
.card-body { padding: var(--card-padding); }
.range-copy { flex: 1; display: flex; flex-direction: column; background: var(--paper); border-bottom: 1px solid var(--line); }
.range-copy :is(h2,h3) a { text-decoration: none; }
.range-copy h2 { font-size: var(--text-h3); letter-spacing: -.015em; }
.range-copy p { color: var(--muted); max-width: 48ch; }
.range-copy .text-link { margin-top: auto; display: flex; border-top: 1px solid var(--line); padding-top: var(--space-2); }
.spec-chips { display: flex; flex-wrap: wrap; gap: var(--space-1); margin-block: 0 var(--space-3); }
.spec-chips span { font-size: var(--text-caption); padding: .25rem var(--space-1); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.product-photo { position: relative; aspect-ratio: 1/1; background: #fff; overflow: hidden; }
.product-photo > img { display: block; width: 100%; height: 100%; }
.photo-contain { object-fit: contain; }
.photo-cover { object-fit: cover; }
.visual-label { position: absolute; inset-inline-end: var(--space-2); inset-block-start: var(--space-2); padding: .2rem .5rem; border-radius: var(--radius); background: var(--paper); font-variant-numeric: tabular-nums; font-size: var(--text-caption); color: var(--muted); }
.product-credit { margin: var(--space-3) 0 0; color: var(--muted); font-size: var(--text-caption); }
.membrane-option { display: flex; align-items: center; gap: var(--space-2); }
.membrane-thumbnail { display: block; width: 56px; height: 56px; aspect-ratio: 1/1; flex-shrink: 0; border-radius: var(--radius); object-fit: cover; }
.membrane-thumbnail.no-photo { display: grid; place-items: center; background: var(--ice); border: 1px solid var(--line); color: var(--muted); font-size: var(--text-caption); font-weight: 400; }
.why-section > h2 { margin-bottom: var(--space-5); }
.benefit-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); border-top: 1px solid var(--line); }
.benefit-grid > :is(article, li) { padding: var(--space-4) var(--space-3); border-inline-start: 1px solid var(--line); }
.benefit-grid > :is(article, li):first-child { border: 0; }
.benefit-mark { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-4); }
.benefit-mark > span { font: 400 var(--text-h3)/1 var(--font-heading); color: var(--muted); }
.benefit-icon { width: 48px; height: 50px; color: var(--blue); }
.benefit-grid h3 { font-size: var(--text-h3); overflow-wrap: anywhere; }
.benefit-grid p { color: var(--muted); font-size: var(--text-small); }
.benefit-grid.process-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); list-style: none; padding: 0; margin: var(--space-5) 0 0; }
.benefit-grid.process-grid .benefit-mark { min-height: 48px; }
.benefit-grid.process-grid .benefit-mark > .icon { color: var(--blue); }
.quote-band { position: relative; overflow: hidden; background: var(--navy); color: var(--paper); padding-block: var(--section-padding); }
.quote-band::after { content: ''; position: absolute; width: 420px; height: 420px; border: 1px solid var(--muted); border-radius: 50%; inset-inline-end: -250px; top: -160px; pointer-events: none; }
.quote-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 3rem; position: relative; z-index: 1; }
.quote-band h2 { max-width: 20ch; }
.quote-band p { color: var(--on-dark); margin: 0; }
.quote-band .button { max-width: 25rem; flex-shrink: 0; }
.page-intro { padding-block: var(--space-5) var(--section-padding); }
.page-intro h1 { max-width: 22ch; }
.page-intro .lead { max-width: 68ch; }
.page-intro .button { margin-top: .5rem; }
.about-story { padding-block: 0; display: grid; grid-template-columns: .85fr 1fr; gap: 6rem; align-items: start; }
.about-photo { aspect-ratio: 3/2; --photo-position: 53% 50%; }
.about-copy h2 { font-size: var(--text-h2); }
.about-copy h2:not(:first-child) { margin-top: 3rem; }
.about-copy > p { color: var(--muted); }
.draft-note { padding: var(--space-3); background: var(--surface); color: var(--muted); font-size: var(--text-small); line-height: 1.6; }
.draft-note strong { color: var(--navy); }
.draft-note p { margin: .5rem 0 0; }
.draft-inline, .spec-note { font-size: var(--text-small); color: var(--muted); }
.related-links { display: flex; gap: 3rem; border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 1.5rem; }
.selection-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 3rem; padding-block: 3rem; margin-bottom: 1.5rem; }
.selection-grid > div { border-top: 1px solid var(--line); padding-top: 1.5rem; }
.selection-grid p { color: var(--muted); }
.selection-section > .diameter-scale { max-width: 800px; margin-inline: auto; }
.membrane-chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 2.5rem; }
.membrane-chips span, .membrane-chip { display: inline-block; padding: .3rem .8rem; border: 1px solid var(--line); border-radius: 2rem; font-size: var(--text-small); font-weight: 500; }
.ideal-section { background: var(--surface); padding: 2.5rem 0; padding-block: 2.5rem; }
.ideal-section h2, .ideal-section p { margin: 0; }
.ideal-section h2 { font-size: var(--text-h2); }
.ideal-section p { font-size: var(--text-body); }
.sizes-section { padding-top: 0; }
.ideal-section + .sizes-section { padding-top: var(--section-padding); }
.size-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 3rem 2rem; }
.size-card { display: flex; flex-direction: column; min-width: 0; border-bottom: 1px solid var(--line); scroll-margin-top: 2rem; }
.size-card .product-photo { flex-shrink: 0; }
.size-card-copy { display: flex; flex-direction: column; flex: 1; }
.size-card h3 { font-size: var(--text-h3); max-width: 18ch; }
.size-card-copy > p { color: var(--muted); }
.spec-list { margin-block: auto 1.5rem; padding-top: .5rem; font-size: var(--text-small); }
.spec-list > div { display: flex; justify-content: space-between; gap: var(--space-2); padding: var(--space-2) 0; padding-block: var(--space-2); border-bottom: 1px solid var(--line); }
.spec-list dt { color: var(--muted); }
.spec-list dd { margin: 0; text-align: right; overflow-wrap: anywhere; max-width: 62%; font-variant-numeric: tabular-nums; }
.size-card .button { align-self: flex-start; min-width: 140px; margin-top: auto; }
.membrane-section { background: var(--surface); }
.table-scroll { max-width: 100%; overflow-x: auto; overscroll-behavior-inline: contain; margin-top: var(--space-4); }
.table-scroll table { min-width: 34rem; }
table { border-collapse: collapse; width: 100%; line-height: 1.6; }
caption { text-align: left; font-size: var(--text-small); color: var(--muted); padding-bottom: var(--space-3); }
th,td { padding: var(--space-2) var(--space-3); text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--navy); color: var(--paper); font-weight: 500; }
tbody th { width: 22%; font-weight: 500; white-space: nowrap; }
tbody td { color: var(--muted); }
.membrane-chip { min-width: 70px; text-align: center; background: var(--paper); color: var(--navy); }
.range-crosslink { padding-block: 2rem; display: flex; justify-content: flex-end; }
.contact-section { display: grid; grid-template-columns: minmax(0,1.45fr) minmax(0,1fr); align-items: start; gap: var(--space-5); padding-block: 0 var(--section-padding); }
.contact-sidebar { min-width: 0; position: sticky; top: var(--sticky-top, var(--space-3)); }
.quote-column { min-width: 0; scroll-margin-top: 2rem; }
.quote-column > p { color: var(--muted); }
.form-note,.field-hint { font-size: var(--text-small); color: var(--muted); }
.form-preview { padding: var(--space-2); border: 1px solid var(--line); background: var(--paper); color: var(--muted); font-size: var(--text-small); margin-block: 1.5rem; }
.form-preview strong { display: block; color: var(--navy); }
.form-status:empty { display: none; }
.form-status { color: var(--navy); }
fieldset { margin: var(--space-4) 0 0; border: 1px solid var(--line); min-width: 0; background: var(--surface); }
legend { float: left; width: 100%; padding: 0; margin: 0 0 var(--space-3); line-height: 1.2; text-wrap: balance; color: var(--navy); font-family: var(--font-heading); font-size: var(--text-h3); letter-spacing: -.015em; }
.form-card > .form-grid { clear: both; }
#quote-form > .field-hint { margin-top: var(--space-2); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); }
.field { min-width: 0; }
.field label { display: block; margin-bottom: var(--space-1); font-weight: 500; font-size: var(--text-small); }
.field label span { color: var(--blue); }
input:not([type="checkbox"]),select,textarea { width: 100%; min-height: 48px; padding: var(--space-1) var(--space-2); background: var(--paper); border: 1px solid var(--control-line); border-radius: var(--radius); color: var(--navy); caret-color: var(--blue); }
textarea { resize: vertical; }
input::placeholder,textarea::placeholder { color: var(--muted); opacity: 1; }
input:user-invalid,select:user-invalid,textarea:user-invalid { border-color: var(--error); background: var(--error-bg); }
.span-full { grid-column: 1/-1; min-width: 0; }
fieldset .field-hint { margin-top: var(--space-2); }
.honeypot { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.consent-row { display: flex; align-items: flex-start; gap: var(--space-1); margin-block: 2rem; font-size: var(--text-small); }
input[type="checkbox"] { margin: .3rem 0 0; width: 20px; height: 20px; flex-shrink: 0; accent-color: var(--blue); }
.consent-row label { cursor: pointer; }
.contact-details { background: var(--navy); color: var(--paper); border-top: 2px solid var(--mint); }
.contact-details :is(a:hover,a:focus-visible) { color: var(--mint); }
.contact-details :focus-visible { outline-color: var(--mint); }
.contact-details .contact-name span,.contact-details dt { color: var(--on-dark); }
.contact-details h2 { font-size: var(--text-h2); margin-bottom: 2rem; }
.contact-name { font-family: var(--font-heading); font-size: var(--text-h3); line-height: 1.4; }
.contact-name span { display: block; font-family: var(--font-body); color: var(--muted); font-size: var(--text-body); margin-top: .2rem; }
.contact-details dt { font-size: var(--text-small); margin-top: var(--space-2); }
.contact-details dd { margin: var(--space-1) 0 0; }
.contact-details dd > a { display: inline-flex; min-height: 44px; align-items: center; }
.contact-phone { font-family: var(--font-heading); font-size: var(--text-h3); text-decoration: none; }
.contact-details dd > .text-link { display: flex; width: fit-content; }
.email-link { overflow-wrap: anywhere; }
.contact-photo { aspect-ratio: 3/2; --photo-position: 56% 60%; margin-top: var(--space-3); }
.location-section { background: var(--surface); margin-top: var(--space-3); }
.location-section .section-title-row { display: block; margin-bottom: var(--space-2); }
.location-section h2 { font-size: var(--text-h3); }
.location-section .text-link { font-size: var(--text-small); }
.map-frame { aspect-ratio: 4/3; background: var(--ice); }
.map-frame iframe { width: 100%; height: 100%; aspect-ratio: 4/3; border: 0; display: block; }
.location-section > .field-hint { margin-top: 1rem; }
.privacy-section { padding-block: 0 var(--section-padding); }
.legal-copy { max-width: 760px; }
.legal-copy h2 { margin-top: 3rem; margin-bottom: 1rem; font-size: var(--text-h3); }
.legal-copy p { color: var(--muted); }
.confirmation-section { padding-block: 0 var(--section-padding); min-height: 330px; }
.confirmation-panel { max-width: 800px; border-top: 1px solid var(--line); padding-top: 2rem; }
.confirmation-panel h2 { font-size: var(--text-h2); }
.confirmation-panel > p { color: var(--muted); }
.confirmation-panel .actions { margin-block: 2rem; }
.site-footer { background: var(--navy); color: var(--paper); padding-block: 4rem var(--whatsapp-clearance); border-top: 1px solid transparent; border-image: var(--brand-gradient) 1; }
.footer-top { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(0,.8fr) minmax(0,1.2fr); gap: var(--space-6); align-items: start; padding-bottom: 3rem; }
.footer-brand > a { display: inline-block; }
.footer-brand .logo-frame { width: 250px; margin-bottom: 1.5rem; }
.footer-top h2 { font-family: var(--font-body); font-size: var(--text-body); letter-spacing: 0; margin: 0 0 var(--space-2); font-weight: 600; }
.footer-top > div:not(.footer-brand) a { display: block; width: fit-content; min-height: 44px; color: var(--on-dark); text-decoration: none; }
.site-footer a:is(:hover, :active) { color: var(--mint); }
.footer-top > div:not(.footer-brand) a:is(:hover, :active) { color: var(--mint); text-decoration: underline; }
.footer-top p { color: var(--on-dark); font-size: var(--text-small); }
.footer-top .footer-small { color: var(--on-dark); font-size: var(--text-caption); }
.footer-top address { font-size: var(--text-small); }
.footer-bottom { border-top: 1px solid var(--muted); padding-top: var(--space-3); display: flex; align-items: center; gap: 2rem; color: var(--on-dark); font-size: var(--text-caption); }
.footer-bottom > span { margin-inline-end: auto; }
.footer-bottom a { display: inline-flex; align-items: center; gap: .5rem; min-height: 44px; text-decoration: none; }
.footer-bottom a:is(:hover, :active) { color: var(--mint); }
.illustrated-intro { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(0,1fr); gap: var(--space-5); align-items: center; }
.illustrated-intro h1 { font-size: clamp(2.75rem, 4.5vw, 4rem); }
.intro-photo { aspect-ratio: 3/2; }
.filters-photo { --photo-position: 50% 52%; }
.sterile-photo { --photo-position: 65% 50%; }
.applications-section { border-bottom: 1px solid var(--line); }
.applications-layout { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.2fr); gap: var(--space-6); align-items: center; }
.applications-photo { aspect-ratio: 3/2; --photo-position: 60% 52%; }
.application-list { list-style: none; padding: 0; margin: var(--space-4) 0 0; }
.application-list li { border-top: 1px solid var(--line); padding-block: var(--space-2); }
.application-list li:last-child { border-bottom: 1px solid var(--line); }
:is(.section-heading, .about-story, .scale-layout, .selection-grid, .applications-layout, .illustrated-intro, .footer-top) > * { min-width: 0; }
@media (max-width: 1120px) {
 :root { --section-padding: var(--space-6); }
 .contact-section { grid-template-columns: minmax(0,1fr); }
 .contact-sidebar { position: static; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-3); }
 .contact-sidebar .contact-details { grid-row: span 2; }
 .contact-sidebar :is(.location-section, .contact-photo) { margin-top: 0; }
 .applications-layout { gap: var(--space-4); }
}
@container (max-width: 380px) { .range-copy :is(h2,h3) { font-size: var(--text-h3); } }
@media (max-width: 1120px) {
 .primary-nav { gap: var(--space-3); } .logo-frame { width: 185px; } .nav-quote { padding-inline: var(--space-2); } .nav-quote .icon { display: none; }
  .section-heading { gap: 3.5rem; } .about-story { gap: 3rem; } .contact-section { gap: 3rem; }
 .size-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .quote-band-inner { gap: 2rem; } .quote-band .button { max-width: 22rem; }
}
@media (max-width: 850px) {
 :root { --space-7: 4.5rem; }
 .header-inner { min-height: 88px; flex-wrap: wrap; gap: 0; }
 .js .menu-toggle { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-1); min-height: 44px; padding: var(--space-1) var(--space-2); border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); color: var(--navy); }
 .menu-lines { width: 18px; height: 10px; border-block: 1.5px solid currentColor; }
 .primary-nav { flex-basis: 100%; flex-direction: column; align-items: stretch; gap: 0; padding-bottom: var(--space-2); }
 .js .primary-nav { display: none; }
 .primary-nav > a:not(.button) { min-height: 44px; padding: var(--space-1) 0; border-top: 1px solid var(--line); }
 .nav-products { flex-wrap: wrap; border-top: 1px solid var(--line); }
 .nav-products > a { flex: 1; }
 .submenu-toggle { min-width: 48px; }
 .product-menu { position: static; flex-basis: 100%; background: var(--surface); }
 .nav-quote { margin-top: 1rem; } .nav-quote .icon { display: block; }
 .range-strip-inner { grid-template-columns: 1fr 1fr; gap: 1.5rem; } .range-strip-inner > a { grid-column: 1/-1; border-top: 1px solid var(--line); padding-top: 1rem; justify-content: space-between; }
 .section-heading { gap: 2rem; } .scale-layout { grid-template-columns: 1fr; gap: var(--space-4); } .scale-layout > div:first-child { max-width: 550px; }
 .diameter-scale { --unit: 2.6px; } .quote-band-inner { flex-direction: column; align-items: flex-start; }
 .contact-section { grid-template-columns: 1fr; } .contact-details { display: block; } .contact-photo { max-width: 480px; }
 .footer-top { grid-template-columns: 1fr 1fr; gap: 3rem; } .footer-brand { grid-column: 1/-1; } .footer-brand p { max-width: none; }
 .about-story { grid-template-columns: 1fr; gap: var(--space-4); } .selection-grid { gap: 1.5rem; }
}
@media (max-width: 600px) {
 :root { --card-padding: var(--space-3); --space-7: 3.5rem; --section-padding: var(--space-7); --text-h1: clamp(2.75rem,10.5vw,3.5rem); }
 .header-inner { min-height: 82px; } .logo-frame { width: 178px; }
 .range-strip-inner { gap: var(--space-3); } .range-strip p { font-size: var(--text-small); }
 .section-heading,.scale-layout { grid-template-columns: 1fr; gap: var(--space-2); }
 .section-heading h2 { max-width: 18ch; } .section-heading > p { font-size: var(--text-body); }
 .scale-layout { gap: var(--space-4); }
 .diameter-scale { --unit: clamp(1.15px,.36vw,2px); gap: 0; }
 .scale-item { min-width: 44px; font-size: var(--text-lead); }
 .section-title-row { align-items: flex-start; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-4); }
 .range-grid { grid-template-columns: 1fr; gap: 2.5rem; }
 .quote-band .button { max-width: none; width: 100%; }
 .page-intro { padding-block: var(--space-4) var(--section-padding); } .page-intro .lead { font-size: var(--text-lead); }
 .breadcrumb { padding-top: var(--space-2); } .breadcrumb ol { font-size: var(--text-caption); }
 .about-story { grid-template-columns: 1fr; gap: 2rem; } .about-photo { aspect-ratio: 4/3; }
 .related-links { flex-direction: column; gap: .5rem; margin-top: 2rem; }
 .selection-grid { grid-template-columns: 1fr; gap: 1.5rem; padding-block: 2rem; }
 .selection-grid h3 { margin-bottom: var(--space-2); } .selection-grid p { margin-bottom: var(--space-1); }
 .membrane-chips { margin-top: 1.5rem; }
 .ideal-section .section-heading { gap: 1rem; }
 .size-grid { grid-template-columns: 1fr; gap: 2.5rem; }
 .membrane-option { flex-direction: column; align-items: flex-start; gap: var(--space-1); }
 .size-card h3 { max-width: none; } .size-card .button { width: 100%; }
 .spec-list { padding-top: 0; }
 .table-scroll { margin-top: 1.5rem; } th,td { padding: var(--space-2) var(--space-1); font-size: var(--text-small); } .membrane-chip { min-width: 54px; padding-inline: .5rem; }
 .range-crosslink { justify-content: flex-start; }
 .form-grid { grid-template-columns: 1fr; } .quote-column > h2 { font-size: var(--text-h2); }
 .contact-details h2 { margin-bottom: 1.5rem; }
 .quote-column .button { width: 100%; } .form-preview { padding: 1rem; }
 .map-frame { aspect-ratio: 4/3; } .location-section .section-title-row { gap: .25rem; }
 .privacy-section { padding-bottom: 3.5rem; } .legal-copy h2 { margin-top: 2.5rem; }
 .confirmation-section .actions { align-items: stretch; flex-direction: column; }
 .site-footer { padding-top: 3rem; } .footer-top { grid-template-columns: 1fr; gap: 2rem; padding-bottom: 2rem; } .footer-brand { grid-column: auto; }
 .footer-top > div:not(.footer-brand) a { min-height: 44px; }
 .footer-bottom { flex-wrap: wrap; gap: .25rem 1.5rem; } .footer-bottom > span { flex-basis: 100%; }
}
@media (max-width: 1120px) {
 .benefit-grid.process-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
 .benefit-grid.process-grid > li:nth-child(3) { padding-inline-start: var(--space-3); border-inline-start: 1px solid var(--line); }
 .hero-band-inner { gap: var(--space-4); }
 .hero-band .actions { flex-direction: column; align-items: stretch; }
 .scale-layout { gap: var(--space-4); }
 .benefit-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-4) 0; }
 .benefit-grid > :is(article, li):nth-child(3) { border-inline-start: 0; }
}
@media (max-width: 850px) {
 .hero-photo { aspect-ratio: 16/7; }
 .illustrated-intro, .applications-layout { grid-template-columns: minmax(0,1fr); gap: var(--space-4); }
 .intro-photo, .applications-photo, .about-photo { aspect-ratio: 16/9; }
 .hero-band-inner { align-items: flex-start; }
 .contact-photo { max-width: none; }
 .diameter-scale { --unit: clamp(2px,.4vw,3.2px); }
 .benefit-grid h3 { max-width: 16ch; }
}
@media (max-width: 600px) {
 .home-hero { padding-top: var(--space-4); }
 .benefit-grid.process-grid { grid-template-columns: 1fr; gap: 0; }
 .benefit-grid.process-grid > li, .benefit-grid.process-grid > li:nth-child(3) { padding: var(--space-3) var(--space-2); border-inline-start: 0; }
 .benefit-grid.process-grid > li + li { border-top: 1px solid var(--line); }
 .benefit-grid.process-grid .benefit-mark { min-height: 40px; margin-bottom: var(--space-2); }
 .benefit-grid.process-grid h3 { max-width: none; }
 .about-copy h2:first-child br { display: none; }
 .hero-heading { padding-bottom: var(--space-4); }
 .hero-heading h1 { font-size: var(--text-hero); }
 .hero-photo { aspect-ratio: 4/3; }
 .intro-photo, .applications-photo, .about-photo, .contact-photo { aspect-ratio: 4/3; }
 .contact-sidebar { display: block; }
 .contact-sidebar :is(.location-section, .contact-photo) { margin-top: var(--space-3); }
 .hero-band { padding: var(--space-4) 0; padding-block: var(--space-4); }
 .hero-band-inner { flex-direction: column; gap: var(--space-3); }
 .hero-band .actions { width: 100%; order: -1; }
 .hero-technical > div { flex-direction: column; gap: var(--space-1); }
 .size-feature { padding-block: var(--section-padding); }
 .size-feature h2 br { display: none; }
 .diameter-scale { --unit: clamp(1.15px,.35vw,2px); gap: 0; }
 .scale-item { font-size: var(--text-lead); }
 .scale-item small { font-size: var(--text-caption); }
 .benefit-grid > :is(article, li) { padding: var(--space-3) var(--space-2); }
 .benefit-mark { margin-bottom: var(--space-3); }
 .benefit-icon { width: 36px; height: 38px; }
 .benefit-grid h3 { font-size: var(--text-lead); }
 .benefit-grid p { font-size: var(--text-small); }
 .contact-details h2 { font-size: var(--text-h2); }
 .form-card legend { font-size: var(--text-lead); }
}
@media (forced-colors: active) { .scale-disc { border-color: CanvasText; } .button { border: 1px solid ButtonText; } }
@media print { .site-header,.site-footer,.quote-band,.menu-toggle,.actions,.map-frame { display: none; } body { color: #000; background: #fff; } .container { width: 100%; } .section-space { padding-block: 1.5rem; } .size-card { break-inside: avoid; } a { text-decoration: underline; } }

/* Full-screen navigation follows the existing navy, mint and membrane motif. */
.mobile-menu { position: fixed; inset: 0; width: 100%; max-width: none; height: 100vh; height: 100dvh; max-height: none; margin: 0; padding: 0; border: 0; background: var(--navy); color: var(--paper); overflow-y: auto; overscroll-behavior: contain; --focus-ring: var(--mint); --link-hover: var(--mint); }
.mobile-menu::backdrop { background: var(--navy); }
.mobile-menu::before { content: ''; position: fixed; width: min(100vw, 480px); height: 80vh; right: -30%; bottom: -25%; background: url('membrane-arcs.svg') center / contain no-repeat; opacity: .14; pointer-events: none; }
.mobile-menu-inner { position: relative; min-height: 100%; display: flex; flex-direction: column; gap: var(--space-5); padding: max(1rem, env(safe-area-inset-top)) var(--gutter) max(1.5rem, env(safe-area-inset-bottom)); }
.mobile-menu-top { display: flex; justify-content: space-between; align-items: center; gap: var(--space-2); min-height: 52px; }
.menu-close { display: inline-flex; align-items: center; gap: var(--space-1); min-height: 48px; padding: .5rem; border: 0; background: transparent; color: var(--paper); }
.mobile-menu-links { display: flex; flex-direction: column; gap: var(--space-1); }
.mobile-menu-links > a, .mobile-products-row > a { display: block; padding-block: var(--space-1); font-family: var(--font-heading); font-size: clamp(2rem, 8vw, 3rem); line-height: 1.25; text-decoration: none; font-weight: 400; }
.mobile-menu-links a[aria-current="page"] { color: var(--mint); }
.mobile-products-row { display: flex; justify-content: space-between; align-items: center; }
.mobile-products-row > a { flex: 1; }
.mobile-submenu-toggle { min-width: 48px; min-height: 48px; display: grid; place-items: center; border: 1px solid var(--muted); border-radius: var(--radius); color: var(--paper); background: transparent; }
.mobile-submenu-toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }
#mobile-product-links { padding: var(--space-1) 0 var(--space-2) var(--space-2); margin-left: .15rem; border-left: 1px solid var(--muted); }
#mobile-product-links a { display: flex; align-items: center; min-height: 48px; color: var(--on-dark); font-size: var(--text-lead); text-decoration: none; }
.mobile-menu-bottom { margin-top: auto; padding-top: var(--space-3); display: grid; gap: var(--space-3); }
.mobile-menu-bottom .button { width: 100%; justify-content: space-between; min-height: 56px; }
.mobile-contact { display: block; width: fit-content; min-height: 44px; text-decoration: none; font-size: var(--text-body); }
.mobile-contact span { display: block; color: var(--on-dark); font-size: var(--text-small); margin-top: .25rem; }
body.menu-open { position: fixed; width: 100%; overflow: hidden; }
/* Keep the direct contact action visible on pale photography and navy sections. */
.whatsapp-float {
 position: fixed; z-index: 20;
 right: calc(var(--whatsapp-gap) + env(safe-area-inset-right, 0px));
 bottom: calc(var(--whatsapp-gap) + env(safe-area-inset-bottom, 0px));
 width: var(--whatsapp-size); height: var(--whatsapp-size);
 display: grid; place-items: center; border: 1px solid #075e54; border-radius: 50%;
 background: #25d366; color: #fff; text-decoration: none;
 box-shadow: 0 4px 12px rgb(10 31 61 / .22);
 transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.whatsapp-float:is(:hover, :focus-visible, :active) { color: #fff; }
/* The white mark keeps a dark keyline: white alone on this green is only 1.98:1. */
.whatsapp-float svg { width: 30px; height: 30px; overflow: visible; stroke: #075e54; stroke-width: .6; stroke-linejoin: round; paint-order: stroke fill; }
.whatsapp-float:focus-visible { outline: 3px solid var(--navy); outline-offset: 3px; box-shadow: 0 0 0 3px #fff, 0 8px 20px rgb(10 31 61 / .3); }
body.menu-open .whatsapp-float { display: none; }
@media (max-width: 850px) {
 :root { --whatsapp-size: 52px; --whatsapp-gap: 16px; }
 .whatsapp-float svg { width: 28px; height: 28px; }
 #quote-form { padding-bottom: var(--whatsapp-clearance); }
}
@media (prefers-reduced-motion: no-preference) {
 .whatsapp-float:focus-visible { transform: scale(1.05); }
}
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
 .whatsapp-float:hover { transform: scale(1.05); box-shadow: 0 8px 20px rgb(10 31 61 / .3); }
 .whatsapp-float:hover:focus-visible { box-shadow: 0 0 0 3px #fff, 0 8px 20px rgb(10 31 61 / .3); }
}
@media (forced-colors: active) {
 .whatsapp-float { border-color: ButtonText; background: ButtonFace; color: ButtonText; }
 .whatsapp-float:is(:hover, :focus-visible, :active) { color: ButtonText; }
 .whatsapp-float svg { stroke: none; }
 .whatsapp-float:focus-visible { outline-color: Highlight; }
}
@media print { .whatsapp-float { display: none; } }
#form-status:not(:empty) { padding: var(--space-2); background: var(--surface); border: 1px solid var(--line); margin-block: var(--space-3); }
#form-fallback { margin-top: var(--space-3); }
#captcha-container:not(:empty) { margin-bottom: var(--space-3); }
@media (max-width: 850px) {
 .js .header-inner { flex-wrap: nowrap; gap: var(--space-2); min-height: 88px; }
 .header-inner .logo-frame, .mobile-menu-top .logo-frame { width: clamp(148px, 44vw, 185px); }
 .js .menu-toggle { flex-shrink: 0; min-height: 48px; padding-inline: .75rem; }
}
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
 .button { transition: transform .18s var(--ease), box-shadow .18s var(--ease); }
 .button:not(:disabled):hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgb(10 31 61 / .12); }
 .button:not(:disabled):active { transform: translateY(0); box-shadow: none; }
}
@media (prefers-reduced-motion: reduce) {
 *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* Industries and product-code tables */
.industries-section .application-list{margin:1rem 0}
.industries-section .application-list li,.membrane-section .application-list li{break-inside:avoid}
.membrane-section .application-list{margin-top:1.5rem}
table code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em;white-space:nowrap}

.spec-subhead{margin:48px 0 8px}
@media (max-width:767px){.spec-subhead{margin-top:40px}}