:root {
  --white: #fff;
  --paper: #f5f5f7;
  --ink: #1d1d1f;
  --muted: #747478;
  --orange: #e75b16;
  --deep: #b8400a;
  --line: #d2d2d7;
  --ease: cubic-bezier(.22,.68,.18,1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; color: var(--ink); background: white; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
button,input { font: inherit; }
a { color: inherit; text-decoration: none; }
button,a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; color: inherit; }
button:disabled { cursor: default; opacity: .3; }
button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,[tabindex]:focus-visible { outline: 3px solid #087fbb; outline-offset: 5px; }
img { display: block; max-width: 100%; }
h1,h2,h3,p { margin: 0; }
h1,h2,h3 { font-weight: 600; }
h2 { font-size: clamp(42px,4.8vw,68px); line-height: 1.06; letter-spacing: -.045em; }
p { line-height: 1.5; }
.section-wrap { width: min(1200px,calc(100% - 96px)); margin-inline: auto; }
.muted { color: var(--muted); }
.eyebrow { font-size: 19px; font-weight: 600; line-height: 1.4; letter-spacing: -.02em; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip { position: fixed; z-index: 99; top: 10px; left: 10px; background: white; padding: 15px; transform: translateY(-180%); }
.skip:focus { transform: none; }
.site-header { display: flex; height: 54px; justify-content: space-between; align-items: center; gap: 35px; }
.brand { display: flex; flex-direction: column; align-items: center; gap: 2px; flex-shrink: 0; }
.brand img { width: 78px; height: 25px; object-fit: contain; }
.brand span { font-size: 6px; letter-spacing: .13em; }
.site-header nav { display: flex; gap: 55px; font-size: 11px; color: #525256; }
.site-header nav a:hover,.product-nav nav a:hover { color: var(--orange); }
.motion-toggle { width: 30px; height: 30px; border: 1px solid #e2e2e6; background: none; border-radius: 50%; display: grid; place-items: center; }
.motion-toggle svg { width: 12px; fill: none; stroke: currentColor; stroke-width: 2; }
.product-nav { position: sticky; top: 0; z-index: 30; background: rgb(255 255 255 / 88%); backdrop-filter: blur(20px) saturate(1.5); border-bottom: 1px solid #d2d2d780; }
.product-nav>.section-wrap { display: flex; align-items: center; gap: 28px; min-height: 58px; }
.product-name { font-size: 21px; font-weight: 600; letter-spacing: -.04em; white-space: nowrap; }
.product-name span { font-weight: 400; }
.product-nav nav { display: flex; gap: 25px; margin-left: auto; font-size: 11px; color: #59595d; }
.nav-cta { padding: 8px 15px; border-radius: 30px; background: var(--orange); color: white; font-size: 11px; }
.nav-cta:hover { background: var(--deep); }
.reading-progress { position: absolute; bottom: -1px; left: 0; height: 2px; width: 100%; background: var(--orange); transform: scaleX(var(--reading-progress,0)); transform-origin: left; }
.catalogue-note { padding: 15px 20px; text-align: center; background: var(--paper); font-size: 11px; color: #55555a; }
.catalogue-note a { color: var(--deep); margin-left: 7px; white-space: nowrap; }
.catalogue-note a:hover { text-decoration: underline; }
.hero { padding-top: 76px; }
.hero-copy { text-align: center; position: relative; z-index: 1; }
.hero-kicker { font-size: 23px; font-weight: 600; letter-spacing: -.025em; animation: enter .8s var(--ease) both; }
.hero h1 { font-size: clamp(60px,7.3vw,102px); line-height: .99; letter-spacing: -.06em; margin: 20px auto 26px; animation: enter 1s .08s var(--ease) both; }
.hero h1 span { color: var(--orange); background: linear-gradient(100deg,#f68a22 10%,#d94a14 75%); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-description { font-size: 22px; line-height: 1.4; color: #6e6e73; letter-spacing: -.025em; animation: enter 1s .15s var(--ease) both; }
.hero-actions { margin-top: 29px; display: flex; align-items: center; justify-content: center; gap: 28px; animation: enter 1s .2s var(--ease) both; }
.button { display: inline-flex; gap: 25px; align-items: center; justify-content: center; min-height: 46px; padding: 13px 24px; border-radius: 30px; border: 1px solid transparent; font-size: 15px; line-height: 1.2; transition: background .2s; }
.primary { background: var(--orange); color: white; }
.primary:hover { background: var(--deep); }
.hero-link { font-size: 17px; color: var(--deep); }
.hero-link:hover { text-decoration: underline; }
.hero-link span { margin-left: 5px; font-size: 24px; vertical-align: -1px; }
.hero-visual { margin-top: 64px; position: relative; }
.photo-frame { height: 470px; border-radius: 30px; overflow: hidden; background: #f4dfcf; transform: scale(calc(.96 + var(--hero-progress,0) * .04)); transform-origin: center; }
.photo-frame img { height: 100%; width: 100%; object-fit: cover; object-position: center 48%; transform: scale(calc(1.12 - var(--hero-progress,0) * .12)); will-change: transform; }
.photo-caption { display: flex; justify-content: space-between; align-items: center; gap: 25px; padding: 20px 6px 0; font-size: 12px; color: #76767c; }
.photo-caption button { display: flex; gap: 10px; align-items: center; background: none; border: none; padding: 8px 0 8px 12px; font-size: 12px; color: #424245; }
.photo-caption button span { border-radius: 50%; background: #e8e8ed; width: 26px; height: 26px; display: grid; place-items: center; font-size: 20px; }
.product-intro { padding-top: 125px; padding-bottom: 120px; }
.intro-heading { text-align: center; max-width: 800px; margin-inline: auto; }
.intro-heading .eyebrow { margin-bottom: 24px; }
.intro-heading h2 { font-size: clamp(44px,5.6vw,78px); line-height: 1.06; }
.intro-heading>p:last-child { max-width: 620px; margin: 30px auto 0; color: #747478; font-size: 21px; letter-spacing: -.025em; }
.facts { display: grid; grid-template-columns: repeat(3,1fr); gap: 70px; margin: 70px auto 0; max-width: 1050px; text-align: center; }
.facts dt { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.facts dd { margin: 0; font-size: 42px; font-weight: 600; letter-spacing: -.045em; }
.facts dd>span { display: block; font-weight: 400; font-size: 12px; letter-spacing: 0; line-height: 1.5; color: var(--muted); margin-top: 12px; }
.facts small { font-size: 20px; }
.size-section,.joint-section { background: var(--paper); padding: 110px 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 80px; margin-bottom: 50px; }
.section-heading .eyebrow { margin-bottom: 18px; }
.section-heading>p { max-width: 320px; color: #747478; font-size: 17px; letter-spacing: -.02em; }
.size-explorer { display: grid; grid-template-columns: 1.1fr .9fr; border-radius: 28px; overflow: hidden; background: white; min-height: 520px; }
.pipe-diagram { position: relative; display: grid; place-items: center; min-height: 520px; overflow: hidden; background: radial-gradient(ellipse at 50% 65%,#fbe5d9,white 65%); }
.diagram-grid { display: none; }
.pipe-ring { position: relative; z-index: 1; border-radius: 50%; padding: 15px; background: linear-gradient(130deg,#ffb363 0%,#f37528 28%,#d23b0d 65%,#ed6318); border: 1px solid #db5c18; transform: perspective(800px) rotateY(-15deg) rotateX(8deg); box-shadow: 11px 9px 0 #c7440e,14px 11px 0 #d94c11,24px 35px 35px -15px #a7482b40,inset 2px 3px 4px #ffc792; transition: width .5s var(--ease),height .5s var(--ease),padding .5s var(--ease); }
.pipe-inner { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid #9e330d; background: radial-gradient(ellipse at 60% 60%,white,#faf7f5); box-shadow: inset 8px 5px 12px #7a2c0020; }
.pipe-inner span { font-size: 8px; font-weight: 600; letter-spacing: .05em; color: var(--muted); }
.pipe-inner strong { font-size: 64px; font-weight: 600; letter-spacing: -.06em; line-height: 1.2; }
.pipe-inner em { font-size: 11px; font-style: normal; color: var(--muted); }
.diagram-code { position: absolute; left: 30px; top: 30px; color: #96969a; font-size: 11px; }
.diagram-note { position: absolute; bottom: 30px; font-size: 10px; color: #96969a; }
.size-controls { padding: 44px; border-left: 1px solid #f0f0f2; }
.control-top { display: flex; justify-content: space-between; align-items: center; font-size: 13px; font-weight: 500; }
.control-top>span { font-size: 11px; color: #8a8a90; font-weight: 400; }
.diameter-value { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; }
.diameter-value output { font-size: 58px; letter-spacing: -.06em; font-weight: 500; }
.diameter-value small { font-size: 22px; color: var(--muted); letter-spacing: -.03em; }
.diameter-value button { width: 34px; height: 34px; border: 0; border-radius: 50%; font-size: 23px; background: #f0f0f2; }
input[type=range] { width: 100%; accent-color: var(--orange); height: 24px; margin: 22px 0 8px; cursor: pointer; }
.range-labels { display: flex; justify-content: space-between; font-size: 10px; color: #8a8a90; }
.class-control { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-top: 29px; font-size: 13px; }
.segmented { display: flex; gap: 2px; padding: 3px; background: #ededf0; border-radius: 10px; }
.segmented button { font-size: 11px; border: 0; border-radius: 8px; padding: 10px 17px; background: none; }
.segmented button[aria-pressed=true] { background: white; color: var(--ink); box-shadow: 0 1px 5px #00000014; }
.dimension-result { display: flex; flex-direction: column; gap: 11px; padding-top: 25px; border-top: 1px solid #e5e5e9; margin-top: 29px; }
.dimension-result>span { font-size: 12px; color: var(--muted); }
.dimension-result>span:last-child { font-size: 10px; }
.dimension-result strong { font-size: 32px; letter-spacing: -.04em; font-weight: 600; }
.dimension-result small { font-size: 16px; font-weight: 400; }
.text-button { border: 0; background: none; color: var(--deep); font-size: 12px; padding: 15px 0 2px; margin-top: 8px; }
.text-button>span { margin-left: 6px; }
.text-button:hover { text-decoration: underline; }
.copy-feedback { font-size: 10px; line-height: 1.5; color: var(--deep); margin-top: 8px; min-height: 15px; }
.technical-note { font-size: 11px; color: #7d7d83; margin-top: 25px; line-height: 1.6; max-width: 1000px; }
.dimension-table { border-bottom: 1px solid var(--line); border-top: 1px solid var(--line); margin-top: 35px; }
summary { cursor: pointer; }
.dimension-table summary,.faq-list summary { list-style: none; padding: 25px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 15px; }
summary::-webkit-details-marker { display: none; }
summary>span { font-size: 24px; font-weight: 300; transition: transform .3s; }
details[open]>summary>span { transform: rotate(45deg); }
.table-scroll { overflow-x: auto; padding-bottom: 25px; }
table { width: 100%; border-collapse: collapse; text-align: left; font-size: 13px; }
caption { font-size: 11px; text-align: left; color: var(--muted); padding-bottom: 15px; }
th,td { padding: 13px 20px; border-bottom: 1px solid #dedee2; }
thead th { font-size: 12px; }
tbody tr:nth-child(odd) { background: #ffffff77; }
.fittings-section { padding-top: 115px; padding-bottom: 105px; }
.fitting-filters { display: flex; gap: 9px; flex-wrap: wrap; margin-bottom: 30px; }
.fitting-filters button { padding: 12px 20px; font-size: 12px; border: 0; border-radius: 30px; background: #f1f1f3; transition: background .2s; }
.fitting-filters button[aria-pressed=true] { color: white; background: #323234; }
.fitting-filters button>span { margin-left: 7px; opacity: .65; }
.fitting-grid { display: grid; grid-auto-flow: column; grid-auto-columns: 250px; gap: 20px; overflow-x: auto; overscroll-behavior-inline: contain; scroll-snap-type: x mandatory; scrollbar-width: none; padding: 6px 1px 24px; }
.fitting-grid::-webkit-scrollbar { display: none; }
.fitting-card { scroll-snap-align: start; border: 0; border-radius: 24px; background: #f5f5f7; text-align: left; display: flex; flex-direction: column; overflow: hidden; min-height: 300px; padding: 0; transition: transform .35s var(--ease); }
.fitting-card:hover { transform: translateY(-5px); }
.fitting-card img { width: 100%; height: 215px; padding: 30px 20px 5px; object-fit: contain; mix-blend-mode: multiply; transition: transform .4s var(--ease); }
.fitting-card:hover img { transform: scale(1.05); }
.fitting-card .card-label { padding: 25px; font-size: 17px; font-weight: 600; letter-spacing: -.025em; display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; margin-top: auto; }
.card-label>span { background: #e5e5e9; border-radius: 50%; width: 27px; height: 27px; display: grid; place-items: center; font-size: 19px; font-weight: 400; flex-shrink: 0; }
.gallery-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.gallery-toolbar p { font-size: 12px; color: #8b8b92; }
.gallery-toolbar>div { display: flex; gap: 12px; }
.gallery-toolbar button { width: 36px; height: 36px; background: #ececef; border-radius: 50%; border: 0; font-size: 25px; line-height: 1; }
.joint-tabs { display: flex; justify-content: center; gap: 5px; padding: 5px; border-radius: 18px; margin: 0 auto 28px; background: #e7e7eb; width: max-content; max-width: 100%; }
.joint-tabs button { border: 0; border-radius: 14px; background: none; padding: 16px 34px; text-align: left; font-size: 22px; font-weight: 600; letter-spacing: -.03em; }
.joint-tabs button>span:not(.joint-arrow) { display: block; font-size: 11px; letter-spacing: 0; font-weight: 400; color: var(--muted); margin-top: 3px; }
.joint-tabs button[aria-selected=true] { background: white; box-shadow: 0 2px 6px #0000000a; }
.joint-arrow { display: none; }
.joint-description { text-align: center; color: var(--muted); font-size: 15px; min-height: 46px; margin-bottom: 24px; }
.joint-steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; padding: 0; list-style: none; margin: 0; }
.joint-steps>li { background: white; border-radius: 24px; overflow: hidden; }
.joint-steps img { width: 100%; aspect-ratio: 1.12; object-fit: cover; }
.step-caption { display: flex; gap: 12px; padding: 24px 22px 28px; }
.step-caption>span { padding-top: 1px; color: var(--orange); font-size: 12px; font-weight: 600; }
.step-caption h3 { font-size: 16px; line-height: 1.25; letter-spacing: -.025em; margin-bottom: 9px; }
.step-caption p { font-size: 12px; color: #7b7b82; line-height: 1.6; }
.faq-section { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; padding-top: 120px; padding-bottom: 120px; }
.faq-section .eyebrow { font-size: 15px; margin-bottom: 24px; }
.faq-section h2 { font-size: clamp(36px,3.6vw,50px); }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { font-weight: 500; padding-block: 23px; }
.faq-list p { padding-bottom: 25px; font-size: 13px; line-height: 1.6; color: var(--muted); }
.contact-section { padding-top: 85px; padding-bottom: 90px; background: var(--paper); border-radius: 30px; text-align: center; margin-bottom: 110px; }
.contact-section .eyebrow { margin-bottom: 22px; }
.contact-section h2 { font-size: clamp(44px,5.5vw,76px); letter-spacing: -.05em; }
.contact-section h2>span { color: var(--orange); }
.contact-content>p:not(.eyebrow) { font-size: 19px; color: #77777e; max-width: 500px; margin: 28px auto; padding-inline: 20px; }
.contact-actions { display: flex; justify-content: center; align-items: center; gap: 30px; flex-wrap: wrap; }
.site-footer { display: flex; align-items: center; gap: 35px; justify-content: space-between; padding-top: 30px; padding-bottom: 40px; border-top: 1px solid var(--line); }
.site-footer p,.site-footer>a:last-child { font-size: 11px; color: #87878e; }
.site-footer>a:last-child>span { margin-left: 10px; }
dialog { border: none; border-radius: 30px; background: white; padding: 0; width: min(680px,calc(100% - 32px)); max-height: 90svh; overflow-y: auto; }
dialog::backdrop { background: #25252c80; backdrop-filter: blur(12px); }
.dialog-close { position: absolute; right: 18px; top: 18px; z-index: 2; width: 36px; height: 36px; border: none; border-radius: 50%; background: #eeeeef; font-size: 26px; font-weight: 300; }
.dialog-image { display: flex; justify-content: center; padding: 35px 30px 0; }
.dialog-image img { width: 100%; height: 320px; object-fit: contain; }
.dialog-body { padding: 30px 42px 42px; }
.dialog-body .eyebrow { font-size: 12px; color: #898990; }
.dialog-body h2 { font-size: 40px; margin: 14px 0 20px; }
.dialog-body>p:not(.eyebrow):not(.technical-note) { font-size: 16px; color: #76767b; }
.dialog-body .button { margin-top: 28px; }
#photo-dialog { width: min(1100px,calc(100% - 32px)); }
.photo-toolbar { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 20px; background: #fffffff2; backdrop-filter: blur(10px); padding: 15px 20px; border-bottom: 1px solid #eee; }
.photo-toolbar>span { font-size: 12px; font-weight: 500; }
.photo-toolbar .dialog-close { position: static; flex-shrink: 0; }
.photo-zoom-controls { display: flex; align-items: center; gap: 12px; }
.photo-zoom-controls button { width: 32px; height: 32px; border: 0; border-radius: 50%; background: #f1f1f3; font-size: 20px; }
.photo-zoom-controls button:last-child { width: auto; border-radius: 8px; font-size: 11px; padding-inline: 11px; }
.photo-zoom-controls output { width: 40px; text-align: center; font-size: 12px; }
.photo-viewport { width: 100%; height: min(65svh,760px); overflow: auto; background: #f5f5f7; overscroll-behavior: contain; }
.photo-viewport img { display: block; width: 100%; height: 100%; max-width: none; object-fit: contain; }
.photo-download { display: inline-block; font-size: 12px; color: var(--deep); margin-top: 15px; }
.technical-note a { color: var(--deep); white-space: nowrap; }
.photo-dialog-caption { padding: 25px 35px 30px; }
.photo-dialog-caption h2 { font-size: 24px; letter-spacing: -.03em; }
.photo-dialog-caption p { font-size: 12px; margin-top: 12px; color: var(--muted); }
.noscript-note { padding: 30px; background: var(--paper); }
.noscript-note a { text-decoration: underline; }
.reveal { transition: opacity .85s var(--ease),transform .85s var(--ease); }
.reveal.pending { opacity: 0; transform: translateY(35px); }
body.motion-paused * { animation: none!important; transition: none!important; scroll-behavior: auto!important; }
body.motion-paused .reveal { opacity: 1; transform: none; }
body.motion-paused .photo-frame,body.motion-paused .photo-frame img { transform: none; }
@keyframes enter { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
@media(min-width:1600px) {
  .hero { padding-top: 100px; }
  .photo-frame { height: 520px; }
}
@media(max-width:1050px) {
  .section-wrap { width: calc(100% - 64px); }
  .hero h1 { font-size: 80px; }
  .section-heading { gap: 40px; }
  .size-explorer { grid-template-columns: 1fr 1fr; }
  .size-controls { padding: 35px 30px; }
  .pipe-diagram { min-height: 500px; }
  .facts { gap: 30px; }
  .facts dd { font-size: 36px; }
  .joint-steps { grid-template-columns: 1fr 1fr; gap: 24px; }
  .joint-steps>li { display: flex; align-items: center; }
  .joint-steps img { width: 42%; height: 210px; object-fit: cover; }
  .step-caption { padding: 20px; gap: 8px; }
  .faq-section { gap: 45px; }
}
@media(max-width:760px) {
  html { scroll-padding-top: 80px; }
  .section-wrap { width: calc(100% - 40px); }
  .site-header { height: 49px; gap: 20px; }
  .site-header .brand img { width: 70px; height: 22px; }
  .site-header nav { margin-left: auto; }
  .site-header nav a:not(:last-child) { display: none; }
  .site-header nav a { font-size: 10px; }
  .motion-toggle { width: 28px; height: 28px; }
  .product-nav>.section-wrap { min-height: 56px; gap: 18px; flex-wrap: wrap; padding: 10px 0; }
  .product-name { font-size: 20px; }
  .product-nav nav { margin-left: auto; gap: 20px; }
  .product-nav nav a { font-size: 11px; }
  .product-nav nav a:first-child,.product-nav nav a:last-child { display: none; }
  .nav-cta { padding: 7px 11px; font-size: 10px; }
  .catalogue-note { font-size: 10px; line-height: 1.6; padding: 14px 35px; }
  .hero { padding-top: 58px; }
  .hero-kicker { font-size: 16px; }
  .hero h1 { font-size: clamp(48px,10.8vw,70px); margin-top: 19px; margin-bottom: 22px; letter-spacing: -.055em; }
  .hero-description { font-size: 17px; line-height: 1.4; }
  .hero-actions { gap: 21px; margin-top: 26px; }
  .button { font-size: 13px; padding: 12px 20px; min-height: 44px; }
  .hero-link { font-size: 14px; }
  .hero-link span { font-size: 20px; }
  .hero-visual { margin-top: 43px; }
  .photo-frame { height: 310px; border-radius: 22px; }
  .photo-frame img { object-position: 52% 48%; }
  .photo-caption { font-size: 9px; gap: 20px; padding-top: 12px; }
  .photo-caption>span { max-width: 160px; }
  .photo-caption button { font-size: 9px; flex-shrink: 0; padding-left: 0; gap: 6px; }
  .photo-caption button span { width: 24px; height: 24px; font-size: 18px; }
  .product-intro { padding-top: 80px; padding-bottom: 75px; }
  .eyebrow { font-size: 15px; }
  .intro-heading .eyebrow { margin-bottom: 20px; }
  h2,.intro-heading h2 { font-size: clamp(36px,8.4vw,54px); letter-spacing: -.04em; }
  .intro-heading>p:last-child { font-size: 17px; max-width: 340px; margin-top: 25px; }
  .facts { gap: 25px; grid-template-columns: 1fr; margin-top: 45px; }
  .facts>div { padding-bottom: 25px; border-bottom: 1px solid #e5e5e9; }
  .facts>div:last-child { border: none; padding: 0; }
  .facts dt { font-size: 12px; margin-bottom: 8px; }
  .facts dd { font-size: 42px; }
  .facts dd>span { font-size: 12px; margin-top: 8px; }
  .size-section,.joint-section { padding: 75px 0; }
  .section-heading { display: block; margin-bottom: 32px; }
  .section-heading .eyebrow { margin-bottom: 17px; }
  .section-heading>p { font-size: 16px; margin-top: 25px; max-width: 370px; }
  .size-explorer { grid-template-columns: 1fr; border-radius: 24px; }
  .pipe-diagram { min-height: 345px; }
  .diagram-code { left: 24px; top: 24px; font-size: 10px; }
  .diagram-note { bottom: 24px; font-size: 9px; }
  .pipe-inner strong { font-size: 55px; }
  .size-controls { padding: 30px 25px 22px; border-top: 1px solid #f0f0f3; border-left: 0; }
  .diameter-value output { font-size: 53px; }
  .class-control { font-size: 12px; }
  .dimension-result strong { font-size: 32px; }
  .dimension-result>span { font-size: 11px; }
  .technical-note { font-size: 10px; line-height: 1.6; margin-top: 22px; }
  .dimension-table { margin-top: 27px; }
  .dimension-table summary { font-size: 13px; padding: 22px 0; }
  caption { font-size: 10px; }
  table { font-size: 12px; }
  th,td { padding: 12px 10px; }
  .fittings-section { padding-top: 75px; padding-bottom: 70px; }
  .fitting-filters { gap: 7px; margin-bottom: 25px; }
  .fitting-filters button { font-size: 10px; padding: 11px 15px; }
  .fitting-grid { grid-auto-columns: 250px; gap: 15px; margin-right: -20px; padding-right: 20px; }
  .fitting-card { min-height: 300px; }
  .fitting-card .card-label { font-size: 17px; }
  .gallery-toolbar p { font-size: 10px; }
  .gallery-toolbar button { width: 33px; height: 33px; }
  .joint-tabs { width: 100%; gap: 3px; padding: 4px; border-radius: 16px; }
  .joint-tabs button { padding: 13px 18px; border-radius: 13px; flex: 1; font-size: 22px; }
  .joint-tabs button>span:not(.joint-arrow) { font-size: 9px; }
  .joint-description { font-size: 12px; min-height: 43px; margin-bottom: 22px; padding-inline: 10px; }
  .joint-steps { gap: 16px; }
  .joint-steps>li { display: block; border-radius: 18px; }
  .joint-steps img { width: 100%; height: auto; aspect-ratio: 1; }
  .step-caption { padding: 20px 14px; gap: 8px; }
  .step-caption h3 { font-size: 13px; margin-bottom: 9px; }
  .step-caption>span { font-size: 10px; }
  .step-caption p { font-size: 11px; line-height: 1.5; }
  .faq-section { grid-template-columns: 1fr; gap: 35px; padding-top: 75px; padding-bottom: 75px; }
  .faq-section .eyebrow { font-size: 12px; margin-bottom: 20px; }
  .faq-section h2 { font-size: 37px; }
  .faq-list summary { font-size: 14px; line-height: 1.4; }
  .faq-list p { font-size: 12px; }
  .contact-section { padding: 60px 20px; border-radius: 24px; margin-bottom: 70px; }
  .contact-section h2 { font-size: clamp(35px,8.2vw,48px); }
  .contact-section .eyebrow { font-size: 13px; margin-bottom: 20px; }
  .contact-content>p:not(.eyebrow) { font-size: 16px; max-width: 300px; padding-inline: 0; margin: 25px auto; }
  .contact-actions { gap: 20px; }
  .site-footer { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; padding-block: 25px 35px; }
  .site-footer .brand { align-items: start; }
  .site-footer p { font-size: 9px; text-align: right; }
  .site-footer>a:last-child { grid-column: 1/-1; border-top: 1px solid #e5e5e9; padding-top: 20px; display: flex; justify-content: space-between; }
  dialog { border-radius: 24px; }
  .dialog-image { padding: 40px 20px 0; }
  .dialog-image img { height: 190px; }
  .dialog-body { padding: 25px; }
  .dialog-body h2 { font-size: 34px; }
  .dialog-body>p:not(.eyebrow):not(.technical-note) { font-size: 14px; }
  .photo-dialog-caption { padding: 20px 25px 25px; }
  .photo-dialog-caption h2 { font-size: 22px; }
  .photo-dialog-caption p { font-size: 11px; }
  .photo-toolbar { gap: 8px; padding: 12px; }
  .photo-toolbar>span { font-size: 9px; }
  .photo-zoom-controls { gap: 7px; }
  .photo-zoom-controls button { width: 29px; height: 29px; }
  .photo-zoom-controls output { font-size: 10px; width: 33px; }
  .photo-toolbar .dialog-close { width: 29px; height: 29px; font-size: 22px; }
}
@media(max-width:370px) {
  .product-nav>.section-wrap { gap: 12px; }
  .product-nav nav { gap: 13px; }
  .product-name { font-size: 18px; }
  .nav-cta { font-size: 9px; padding-inline: 9px; }
  .hero h1 { font-size: 43px; }
  .hero-actions { gap: 16px; }
  .button { padding-inline: 17px; }
  .photo-frame { height: 270px; }
  .joint-tabs button { padding-inline: 13px; }
  .step-caption { padding-inline: 11px; gap: 6px; }
  .size-controls { padding-inline: 20px; }
  .contact-actions { gap: 14px; }
}
@media(prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
  *,*:before,*:after { animation: none!important; transition: none!important; }
  .reveal.pending { opacity: 1; transform: none; }
  .photo-frame,.photo-frame img { transform: none; }
}
@media print {
  .site-header,.product-nav,.catalogue-note,.motion-toggle,.fitting-filters,.gallery-toolbar,.contact-actions { display: none; }
  .section-wrap { width: 100%; }
  .hero { padding-top: 0; }
  .hero h1 { font-size: 50px; }
  .reveal.pending { opacity: 1; transform: none; }
  .size-section,.joint-section,.product-intro,.fittings-section,.faq-section { padding: 30px 0; }
  .fitting-grid { grid-auto-flow: initial; grid-template-columns: repeat(4,1fr); overflow: visible; }
  .fitting-card { min-height: 0; }
  .fitting-card img { height: 130px; }
  .fitting-card .card-label { font-size: 12px; padding: 15px; }
  .section-heading { break-after: avoid; }
  .size-explorer,.fitting-card,.joint-steps li { break-inside: avoid; }
}