:root {
  --red: var(--c-brand);
  --red-dark: var(--c-brand-dark);
  --blue: #2b7fff;
  --ink: #14213d;
  --text: #3e4a5f;
  --muted: #6e7788;
  --line: #dfe5ec;
  --surface: #ffffff;
  --soft: #f5f8fc;
  --green: #16855b;
  --shadow: 0 14px 38px rgba(20, 33, 61, 0.08);
  --shell: 1280px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
#main-content,#industries,.site-footer [id] { scroll-margin-top: 84px; }
body { margin: 0; color: var(--ink); background: var(--surface); font-family: var(--font-family-base); font-size: var(--font-size-body); line-height: var(--line-height-base); letter-spacing: 0; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
.reveal-ready .reveal { opacity: 0; transform: translateY(24px); transition: opacity .55s ease, transform .55s ease; }
.reveal-ready .reveal.is-revealed { opacity: 1; transform: translateY(0); }
.home #main-content > section:not(.hero) { content-visibility: visible; contain-intrinsic-block-size: none; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: var(--line-height-heading); letter-spacing: 0; }
h1 { margin-bottom: 22px; font-size: var(--font-size-h1); font-weight: var(--font-weight-heading); }
h2 { margin-bottom: 14px; font-size: var(--font-size-h2); font-weight: var(--font-weight-heading); }
h3 { font-size: var(--font-size-lead); }
p { color: var(--text); }
svg { flex: 0 0 auto; }

.shell { width: min(100% - 32px, var(--shell)); margin-inline: auto; }
.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-link { position: fixed; z-index: 9999; left: 16px; top: -80px; padding: 10px 16px; color: #fff; background: var(--ink); }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; z-index: 1000; top: 0; background: rgba(255,255,255,.98); border-bottom: 1px solid rgba(223,229,236,.55); backdrop-filter: blur(14px); }
.header-inner { min-height: 70px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: block; width: min(250px, calc(100vw - 94px)); }
.brand img { width: 100%; }
.icon-button { width: 44px; height: 44px; display: inline-grid; place-items: center; padding: 0; color: var(--ink); background: transparent; border: 1px solid var(--line); border-radius: 6px; cursor: pointer; }
.icon-button svg { width: 22px; height: 22px; }
.header-navigation { position: fixed; inset: 70px 0 auto; max-height: calc(100vh - 70px); padding: 20px 16px 28px; overflow-y: auto; background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); transform: translateY(-130%); visibility: hidden; transition: transform .25s ease, visibility .25s; }
.header-navigation.is-open { transform: translateY(0); visibility: visible; }
.primary-nav { display: block; }
.menu { display: grid; gap: 2px; margin: 0 0 16px; padding: 0; list-style: none; }
.menu a { min-height: 48px; display: flex; align-items: center; padding: 0 8px; font-size: var(--font-size-body); font-weight: var(--font-weight-semibold); border-bottom: 1px solid #edf0f4; }
.header-tools { display: grid; grid-template-columns: 44px 1fr; gap: 8px; align-items: center; }
.header-search { width: 44px; height: 44px; display: grid; place-items: center; color: #566274; }
.header-search svg { width: 19px; height: 19px; }
.language-switcher { position: relative; }
.language-switcher summary { min-height: 44px; display: flex; align-items: center; justify-content: center; gap: 6px; color: #566274; font-size: var(--font-size-caption); font-weight: var(--font-weight-bold); list-style: none; cursor: pointer; }
.language-switcher summary::-webkit-details-marker { display: none; }
.language-switcher summary svg { width: 16px; height: 16px; }
.language-switcher summary svg:last-child { width: 13px; transition: transform .2s ease; }
.language-switcher[open] summary svg:last-child { transform: rotate(180deg); }
.language-menu { display: grid; padding: 7px; background: #fff; border: 1px solid var(--line); border-radius: 5px; box-shadow: var(--shadow); }
.language-menu a { min-width: 120px; padding: 7px 10px; color: #566274; font-size: var(--font-size-caption); }
.language-menu a:hover,.language-menu a[aria-current="page"] { color: var(--red); background: #f7f8fa; }

.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 11px 18px; border: 1px solid transparent; border-radius: 5px; font-size: var(--font-size-small); font-weight: var(--font-weight-bold); line-height: var(--line-height-heading); cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, color .2s ease, background .2s ease; }
.button svg { width: 17px; height: 17px; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--red); border-color: var(--red); box-shadow: 0 9px 20px rgba(217,0,0,.2); }
.button-primary:hover { background: var(--red-dark); border-color: var(--red-dark); }
.nav-quote { width: 100%; }

.hero { position: relative; overflow: hidden; background: #f7f9fb; }
.hero::after { content: ''; position: absolute; z-index: 6; inset: auto 0 0; height: 1px; background: linear-gradient(90deg, transparent, var(--blue), transparent); opacity: .3; }
 .hero-slide { position: absolute; inset: 0; }
.hero-slide { visibility: hidden; opacity: 0; pointer-events: none; transition: opacity .65s ease, visibility .65s ease; }
.hero-slide.is-active { visibility: visible; opacity: 1; pointer-events: auto; }
@keyframes banner-progress { from { width: 0; } to { width: 100%; } }
@media (prefers-reduced-motion: reduce) {
  .hero-slide { transition: none; }
}

/* Shared delivery-contract components. */@keyframes tongyi-spin{to{transform:rotate(360deg)}}
.form-status { flex: 1 1 200px; margin: 0; font-size: var(--font-size-caption); }
.form-status.is-success { color: var(--green); }
.form-status.is-error { color: var(--red); }

.site-footer { padding-top: 58px; color: #566274; background: #fff; border-top: 1px solid #edf0f3; }
.footer-grid { display: grid; gap: 34px; padding-bottom: 42px; }
.footer-brand img { width: 170px; padding: 0; background: transparent; border-radius: 0; }
.footer-brand p { max-width: 250px; margin: 18px 0 0; color: #687486; font-size: var(--font-size-caption); line-height: var(--line-height-relaxed); }
.footer-grid h2 { margin-bottom: 14px; color: #252b35; font-size: var(--font-size-caption); text-transform: none; }
.footer-column>a,.footer-menu a { display: block; margin: 3px 0; color: #667386; font-size: var(--font-size-caption); line-height: var(--line-height-copy); }
.footer-grid a:hover { color: var(--red); }
.footer-menu,.footer-legal-menu { margin: 0; padding: 0; list-style: none; }
.footer-socials { display: flex; gap: 10px; margin-top: 16px; }
.footer-socials a,.footer-socials span { width: 26px; height: 26px; display: grid; place-items: center; margin: 0; color: #6a7482; background: #f0f2f5; border-radius: 50%; font-size: var(--font-size-micro); font-style: normal; font-weight: var(--font-weight-heading); text-transform: uppercase; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-block: 18px; color: #8793a4; border-top: 1px solid #edf0f3; font-size: var(--font-size-micro); }
.footer-legal-menu { display: flex; flex-wrap: wrap; gap: 22px; }

@media (min-width: 600px) {
  .shell { width: min(100% - 48px, var(--shell)); }
  h1 { font-size: var(--font-size-h1); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1025px) {
  .site-header .shell,.site-footer .shell { width:min(100% - 138px,1688px); }
  .header-inner { min-height: 68px; }
  .brand { width: 144px; }
  .nav-toggle { display: none; }
  .header-navigation { position: static; max-height: none; display: flex; flex:1; align-items: center; justify-content:flex-end; gap: clamp(26px,3.7vw,70px); padding: 0; overflow: visible; border: 0; box-shadow: none; transform: none; visibility: visible; }
  .menu { display: flex; align-items: center; gap: clamp(22px,2.35vw,45px); margin: 0; }
  .menu a { min-height: 68px; padding: 0; color:#3e495a; font-size: var(--font-size-caption); border: 0; }
  .menu a:hover { color: var(--red); }
  .header-tools { display: flex; gap: 9px; }
  .header-search { width:32px; height:42px; }
  .language-switcher summary { min-height:42px; }
  .language-menu { position: absolute; z-index: 10; top: calc(100% + 8px); right: 0; }
  .nav-quote { width: auto; min-height:36px; padding:8px 18px; font-size:var(--font-size-caption); }
  h1 { font-size: var(--font-size-h1); }
  .footer-grid { grid-template-columns: 1.2fr 1fr 1fr .9fr 1.35fr; gap: clamp(28px, 4vw, 72px); }
}

@media (min-width: 1440px) {
  :root { --shell: 1360px; }
  h1 { font-size: var(--font-size-h1); }
  h2 { font-size: var(--font-size-h2); }
}

@media (hover: none), (pointer: coarse) {
   .button:hover { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto; animation-duration: .01ms; animation-iteration-count: 1; transition-duration: .01ms; }
}

/* ===== Inner page templates V2 ===== */

/* ===== Product detail blueprint ===== */

/* 1448px reference calibration: product detail artwork is based on a 1154px canvas. */

/* ===== Insights & Resources hub ===== */

/* ===== Case Studies & Installation Sites hub ===== */

/* ===== Product category selector ===== */

/* ===== Customer case detail ===== */

/* ===== Product center ===== */

/* ===== About Us redesign ===== */
.current-menu-item>a,.current_page_item>a { color:var(--red); }
@media(min-width:1025px){
  .current-menu-item>a,.current_page_item>a { position:relative; }
}

@media(max-width:1024px){
  .footer-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media(max-width:767px){
  .footer-grid { grid-template-columns:1fr; }
}
@media(max-width:420px){
  .footer-bottom { display:grid; }
  .footer-legal-menu { gap:14px; }
}

/* Product center reference-size calibration (1200px source artwork). */

/* Customer case reference-size calibration (1448 x 1086 artwork). */

/* ===== Shared site chrome (v2.9) ===== */
.site-header { position: sticky; top: 0; z-index: 1000; background: #fff; border-bottom: 1px solid #edf0f3; backdrop-filter: none; }
.header-inner { min-height: 68px; }
.brand { width: 144px; }
.brand img { width: 100%; height: auto; }
.header-navigation { min-width: 0; }
.header-tools { display: flex; align-items: center; gap: 10px; }
.header-search { width: 30px; height: 30px; display: grid; place-items: center; color: #536071; }
.header-search svg { width: 17px; height: 17px; }
.language-switcher { position: relative; color: #536071; font-size: var(--font-size-caption); }
.language-switcher summary { min-height: 32px; display: flex; align-items: center; gap: 5px; list-style: none; cursor: pointer; }
.language-switcher summary::-webkit-details-marker { display: none; }
.language-switcher summary svg { width: 13px; height: 13px; }
.language-menu { position: absolute; top: 100%; right: 0; min-width: 130px; padding: 7px; background: #fff; border: 1px solid #e2e6eb; box-shadow: 0 12px 28px rgba(25,31,39,.12); }
.language-menu a { display: block; padding: 6px 9px; white-space: nowrap; }
.language-menu a:hover { color: var(--red); background: #f7f8fa; }
.nav-quote { min-height: 36px; padding: 8px 18px; font-size: var(--font-size-caption); box-shadow: none; }
.nav-toggle { position: relative; z-index: 3; }

.site-footer { margin-top: 0; padding-top: 58px; color: #4f5967; background: #fff; border-top: 1px solid #edf0f3; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr .9fr 1.35fr; gap: clamp(28px,4vw,72px); padding-bottom: 42px; }
.footer-brand img { width: 170px; padding: 0; background: transparent; border-radius: 0; }
.footer-brand p { max-width: 250px; margin: 18px 0 12px; color: #778291; font-size: var(--font-size-caption); line-height: var(--line-height-copy); }
.footer-grid h2 { margin: 0 0 9px; color: #1d2633; font-size: var(--font-size-caption); font-weight: var(--font-weight-heading); text-transform: none; }
.footer-grid a,
.footer-grid span { margin: 3px 0; color: #687485; font-size: var(--font-size-caption); line-height: var(--line-height-copy); }
.footer-grid a:hover { color: var(--c-brand); }
.footer-menu, .footer-legal-menu { margin: 0; padding: 0; list-style: none; }
.footer-socials { display: flex; align-items: center; gap: 8px; }
.footer-socials a, .footer-socials span { width: 23px; height: 23px; display: grid; place-items: center; margin: 0; color: #6f7987; background: #f1f3f6; border-radius: 50%; font-size: var(--font-size-micro); font-weight: var(--font-weight-heading); }
.newsletter-status { min-height: 17px; margin: 5px 0 0; color: #66717e; font-size: var(--font-size-micro); line-height: var(--line-height-tight); }
.newsletter-status.is-success { color: #16855b; }
.newsletter-status.is-error { color: var(--c-brand); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 14px; color: #87909c; border-top: 1px solid #edf0f3; font-size: var(--font-size-micro); }
.footer-bottom > span { margin: 0; color: inherit; font-size: inherit; }
.footer-legal-menu { display: flex; gap: 26px; }
.footer-legal-menu a { margin: 0; color: #87909c; font-size: var(--font-size-micro); }

/* ===== Case archive screenshot layout (v2.8) ===== */

@media (min-width: 1025px) {
  .site-header .shell,.site-footer .shell { width:min(100% - 144px,1760px); }
  .header-navigation { display: flex; flex:1; align-items: center; justify-content:flex-end; gap:clamp(26px,3.7vw,70px); }
  .primary-nav { position: static; max-height: none; padding: 0; overflow: visible; background: transparent; border: 0; box-shadow: none; transform: none; visibility: visible; }
  .menu { display: flex; align-items: center; gap:clamp(22px,2.35vw,45px); margin: 0; }
  .menu a { min-height:68px; padding: 0; border: 0; font-size: var(--font-size-caption); }
  .menu a:hover, .menu .current-menu-item > a { color: var(--c-brand); }
}

@media (max-width: 1024px) {
  .header-navigation { position: fixed; inset:68px 0 auto; max-height:calc(100vh - 68px); padding: 14px 24px 22px; overflow-y: auto; background: #fff; border-bottom: 1px solid #dfe4e9; box-shadow: 0 14px 30px rgba(20,30,42,.1); visibility: hidden; transform: translateY(-120%); transition: transform .25s ease, visibility .25s; }
  .header-navigation.is-open { visibility: visible; transform: translateY(0); }
  .header-navigation .primary-nav { position: static; max-height: none; padding: 0; overflow: visible; border: 0; box-shadow: none; visibility: visible; transform: none; }
  .header-navigation .menu { margin-bottom: 12px; }
  .header-tools { justify-content: flex-end; padding-top: 8px; }
  .footer-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns:1fr; }
  .footer-brand { grid-column:1; }
}

@media (max-width: 520px) {
  .header-inner { min-height:62px; }
  .header-navigation { inset-block-start:62px; max-height:calc(100vh - 62px); }
  .footer-grid { grid-template-columns:1fr; gap:28px; }
  .footer-brand { grid-column:1; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-legal-menu { flex-wrap: wrap; gap: 12px 20px; }
}

/* Final shared-chrome calibration: every template uses the same header/footer. */
body[class] .site-header { position:sticky; top:0; background:#fff; border-bottom:1px solid #edf0f3; }
body[class] .site-footer { margin-top:0; padding-top:58px; color:#4f5967; background:#fff; border-top:1px solid #edf0f3; }
body[class] .site-footer .footer-brand img { width:170px; padding:0; background:transparent; }
body[class] .site-footer .footer-grid h2 { margin:0 0 14px; color:#1d2633; font-size:var(--font-size-caption); }
body[class] .site-footer .footer-column>a,
body[class] .site-footer .footer-menu a { display:block; margin:3px 0; color:#687485; font-size:var(--font-size-caption); line-height:var(--line-height-copy); }
body[class] .site-footer .footer-bottom { padding-block:18px; color:#87909c; border-top:1px solid #edf0f3; font-size:var(--font-size-micro); }
@media (min-width:1025px) {
  body[class] .site-header .shell,body[class] .site-footer .shell { width:min(100% - 144px,1760px); }
  body[class] .site-header .header-inner { width:min(100% - 144px,1760px); min-height:68px; }
  body[class] .site-header .brand { width:144px; }
  body[class] .site-header .header-navigation { gap:clamp(26px,3.7vw,70px); }
  body[class] .site-header .menu { gap:clamp(22px,2.35vw,45px); }
  body[class] .site-header .menu a { min-height:68px; font-size:var(--font-size-caption); }
  body[class] .site-header .nav-quote { min-height:36px; padding:8px 18px; font-size:var(--font-size-caption); }
  body[class] .site-footer .footer-grid { grid-template-columns:1.2fr repeat(4,minmax(105px,.72fr)) 1.35fr; gap:clamp(24px,2.5vw,48px); padding-bottom:42px; }
}
@media (max-width:1024px) {
  body[class] .site-header .header-inner { min-height:68px; }
  body[class] .site-header .brand { width:144px; }
  body[class] .site-header .header-navigation { inset-block-start:68px; max-height:calc(100vh - 68px); }
  body[class] .site-footer .footer-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:760px) {
  body[class] .site-footer { padding-top:44px; }
  body[class] .site-footer .footer-grid { grid-template-columns:1fr; gap:28px; }
}
@media (max-width:520px) {
  body[class] .site-header .header-inner { min-height:62px; }
  body[class] .site-header .brand { width:132px; }
  body[class] .site-header .header-navigation { inset-block-start:62px; max-height:calc(100vh - 62px); }
}

/* Shared site chrome: single header/footer treatment for every template. */
body[class] .site-header.site-header { background:rgba(255,255,255,.98); border-bottom:1px solid #f0f2f4; }
body[class] .site-header .menu .current-menu-item > a,
body[class] .site-header .menu .current-menu-ancestor > a { color:var(--c-brand); }
body[class] .site-header .menu > .menu-item-has-children > a::after { content:'\2304'; margin-left:7px; color:#8993a1; font-size: var(--font-size-caption); transform:translateY(-2px); }

body[class] .site-footer.site-footer { margin-top:0; padding-top:48px; color:#9aa6b8; background:#1b273a; border-top:0; }
body[class] .site-footer .footer-grid { align-items:start; }
body[class] .site-footer .footer-brand img { width:180px; filter:grayscale(1) brightness(0) invert(1); }
body[class] .site-footer .footer-brand p { margin-top:16px; color:#9aa6b8; }
body[class] .site-footer .footer-grid h2 { margin:0 0 15px; color:#fff; font-size:var(--font-size-caption); }
body[class] .site-footer .footer-column > a,
body[class] .site-footer .footer-menu a { display:block; margin:4px 0; color:#9aa6b8; font-size:var(--font-size-caption); line-height:var(--line-height-copy); }
body[class] .site-footer .footer-grid a:hover { color:#fff; }
body[class] .site-footer .footer-socials a,
body[class] .site-footer .footer-socials span { color:#d7deea; background:#334158; }
body[class] .site-footer .footer-bottom { padding-block:19px; color:#67768d; border-top:0; font-size:var(--font-size-micro); }
body[class] .site-footer .footer-legal-menu a { color:#75839a; }

/* Insights reference layout. */

@media (min-width:1025px) {
  body[class] .site-header .shell,
  body[class] .site-footer .shell { width:min(92.5%,1776px); }
  body[class] .site-header .header-inner { width:min(92.5%,1776px); min-height:72px; }
  body[class] .site-header .brand { width:151px; }
  body[class] .site-header .header-navigation { gap:clamp(28px,3.5vw,67px); }
  body[class] .site-header .menu { gap:clamp(24px,2.15vw,41px); }
  body[class] .site-header .menu a { min-height:72px; font-size:var(--font-size-caption); }
  body[class] .site-header .nav-quote { min-height:36px; padding:8px 19px; font-size:var(--font-size-caption); }
  body[class] .site-footer .footer-grid { grid-template-columns:1.25fr repeat(4,.82fr) 1.35fr; gap:clamp(26px,3vw,58px); padding-bottom:36px; }
}

/* Case archive reference is authored at a 1440/1536 CSS canvas and captured at 1920px. */

/* ===== Drying technology category: 1920px reference composition ===== */

/* Case detail 1920 x 2088 reference calibration. */

/* ===== Product detail: 1920px reference composition ===== */

/* ===== Product overview: 1920 x 2296 reference composition ===== */

/* Exact 1920px desktop compositions for the supplied page references. */

@media (min-width: 901px) {
  html:has(body.strict-reference-active) { scrollbar-width: none; }
  html:has(body.strict-reference-active)::-webkit-scrollbar { width: 0; height: 0; }
}
/* ===== Product detail readability and responsive repair ===== */

/* Product hero must remain fluid instead of using reference-image pixel widths. */

/* Keep section navigation readable and usable on narrower desktop windows. */

/* Overview: natural reading column + a balanced 2 x 2 value-card grid. */

/* Features and workflow are independent full-width sections, never squeezed side by side. */

/* Lower modules stay fluid; fixed reference widths caused horizontal overflow. */

/* ===== Product lower-content flow repair ===== */