/* ==========================================================================
   unitedheatexchanger.com — "Datasheet" theme
   White, technical and calm. One accent blue taken from the logo, a green
   reserved for certification marks, hairline rules like an engineering drawing.
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  --paper: #FFFFFF;
  --mist: #F3F6F9;
  --mist-2: #E9EEF3;
  --ink: #14202E;
  --ink-2: #26364A;
  --steel: #5A6876;
  --steel-2: #8794A1;
  --line: #DCE3EA;
  --line-2: #C9D3DD;
  --blue: #0F5FB8;
  --blue-dk: #0B4A91;
  --blue-soft: #E8F0FA;
  --green: #3FA34D;
  --green-soft: #EAF6EC;
  --danger: #C0392B;

  --r: 4px;
  --r-lg: 6px;
  --shadow-menu: 0 18px 40px -16px rgba(20,32,46,.22);

  --container: 1240px;
  --gutter: 24px;
  --header-h: 76px;

  --font-head: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Public Sans", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font-body); font-size: 16.5px; line-height: 1.65; color: var(--ink); background: var(--paper); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-head); font-stretch: 88%; line-height: 1.15; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; color: var(--ink); }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 200; background: var(--blue); color: #fff; padding: 10px 16px; }
.skip-link:focus { top: 12px; }
.icon { width: 1.2em; height: 1.2em; flex: none; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.icon-back { transform: scaleX(-1); }
.num { font-variant-numeric: tabular-nums; }
.container { width: min(100% - 2 * var(--gutter), var(--container)); margin-inline: auto; }
.narrow { max-width: 860px; }

/* ---------- 3. Buttons and links ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55em;
  min-height: 46px; padding: .7em 1.3em; border-radius: var(--r);
  background: var(--blue); color: #fff; border: 1px solid var(--blue);
  font-weight: 600; font-size: .95rem; line-height: 1.2; white-space: nowrap;
  transition: background-color .15s, border-color .15s, color .15s;
}
.btn:hover { background: var(--blue-dk); border-color: var(--blue-dk); }
.btn .icon { width: 1.05em; height: 1.05em; }
.btn-lg { min-height: 52px; padding-inline: 1.6em; font-size: 1rem; }
.btn-sm { min-height: 40px; padding: .5em 1em; font-size: .9rem; }
.btn-block { width: 100%; }
.btn-ghost, .btn-outline, .btn-outline-light { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover, .btn-outline:hover, .btn-outline-light:hover { background: var(--paper); border-color: var(--ink); color: var(--ink); }
.btn-navy { background: var(--ink); border-color: var(--ink); }
.btn-navy:hover { background: var(--ink-2); border-color: var(--ink-2); }
.btn-white { background: #fff; color: var(--blue-dk); border-color: #fff; }
.btn-white:hover { background: var(--blue-soft); border-color: var(--blue-soft); color: var(--blue-dk); }
.link-arrow { display: inline-flex; align-items: center; gap: .4em; font-weight: 600; color: var(--blue); font-size: .94rem; }
.link-arrow .icon { width: 1em; height: 1em; transition: transform .15s; }
a:hover > .link-arrow .icon, .link-arrow:hover .icon { transform: translateX(3px); }

/* ---------- 4. Sections ---------- */
.section { padding-block: clamp(64px, 8vw, 104px); position: relative; }
.section-mist, .section-sand { background: var(--mist); }
.section-dark { background: var(--ink); color: #fff; }
.section-dark h2, .section-dark h3 { color: #fff; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: .9rem; font-weight: 600; color: var(--blue); margin-bottom: 12px; }
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }
.section-dark .eyebrow { color: #8DB8EA; }
.section-head { max-width: 760px; margin-bottom: clamp(32px, 4vw, 48px); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2, .h2-lg { font-size: clamp(1.85rem, 3.2vw, 2.6rem); }
.section-head p, .lede { color: var(--steel); font-size: 1.07rem; margin: 0; max-width: 68ch; }
.section-dark .section-head p { color: rgba(255,255,255,.72); }
.section-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-bottom: clamp(32px, 4vw, 48px); }
.section-head-row .section-head { margin-bottom: 0; }
.section-head-row .btn { flex: none; }
.h2-plain { font-size: clamp(1.5rem, 2.4vw, 2rem); margin-bottom: 22px; }

/* One reveal only: content fades in, nothing slides. */
.reveal { opacity: 0; transition: opacity .6s ease; }
.reveal.in { opacity: 1; }

/* ---------- 5. Top bar + header ---------- */
.topbar { background: var(--mist); border-bottom: 1px solid var(--line); font-size: .84rem; color: var(--steel); }
.topbar .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 40px; }
.topbar-note { margin: 0; display: inline-flex; align-items: center; gap: 8px; }
.topbar-contact { display: flex; align-items: center; gap: 22px; }
.topbar-contact a, .topbar-contact span { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.topbar a:hover { color: var(--blue); }
.topbar .icon { width: 15px; height: 15px; color: var(--blue); }

.site-header { position: sticky; top: 0; z-index: 100; background: #fff; border-bottom: 1px solid var(--line); transition: box-shadow .2s; }
.site-header.is-scrolled { box-shadow: 0 6px 24px -14px rgba(20,32,46,.35); }
.header-inner { display: flex; align-items: center; gap: 20px; height: var(--header-h); }
.logo { display: inline-flex; align-items: center; flex: none; }
.logo .logo-text { display: none; }
.brand-logo { height: 48px; width: auto; }

.primary-nav { margin-inline-start: auto; }
.nav-list { display: flex; align-items: center; }
.nav-link { white-space: nowrap; display: inline-flex; align-items: center; gap: 5px; height: var(--header-h); padding-inline: 11px; font-weight: 600; font-size: .93rem; color: var(--ink); position: relative; }
.nav-link::after { content: ""; position: absolute; left: 11px; right: 11px; bottom: -1px; height: 2px; background: var(--blue); transform: scaleX(0); transition: transform .2s; }
.nav-link:hover, .has-mega:hover > .nav-link, .has-mega.open > .nav-link, .nav-link.is-active { color: var(--blue); }
.nav-link:hover::after, .has-mega:hover > .nav-link::after, .has-mega.open > .nav-link::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-link .chev { width: 14px; height: 14px; transition: transform .2s; }
.has-mega:hover > .nav-link .chev, .has-mega.open > .nav-link .chev { transform: rotate(180deg); }

.mega {
  position: absolute; top: 100%; left: 0; right: 0; margin-inline: auto; width: min(1000px, calc(100vw - 48px));
  background: #fff; border: 1px solid var(--line); border-top: 2px solid var(--blue); box-shadow: var(--shadow-menu);
  padding: 22px; display: grid; gap: 8px 24px;
  opacity: 0; visibility: hidden; transition: opacity .15s, visibility .15s;
}
.mega.mega-sm { width: min(760px, calc(100vw - 48px)); }
.mega.mega-products { grid-template-columns: 2fr 1fr; width: min(1120px, calc(100vw - 48px)); }
.mega.mega-towers { width: min(900px, calc(100vw - 48px)); }
.mega.mega-certs { grid-template-columns: repeat(4, 1fr); width: min(1120px, calc(100vw - 48px)); }
.has-mega:hover > .mega, .has-mega:focus-within > .mega, .has-mega.open > .mega { opacity: 1; visibility: visible; }
.mega-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px 12px; }
.mega-group.mg-pv .mega-grid { grid-template-columns: 1fr; }
.mega-group h4, .mega-col h4 { font-family: var(--font-body); font-size: .82rem; font-weight: 700; color: var(--steel); margin: 2px 10px 8px; letter-spacing: 0; }
.mega-col h4 { margin-inline: 8px; }
.mega-group h4 a:hover { color: var(--blue); }
.mega-link { display: flex; gap: 12px; padding: 10px; border-radius: var(--r); }
.mega-link:hover, .mega-link[aria-current] { background: var(--mist); }
.mega-ico { width: 34px; height: 34px; display: grid; place-items: center; color: var(--blue); border: 1px solid var(--line); border-radius: var(--r); flex: none; background: #fff; }
.mega-ico .icon { width: 19px; height: 19px; }
.mega-link strong { display: block; font-size: .93rem; line-height: 1.3; color: var(--ink); }
.mega-link small { display: block; font-size: .8rem; color: var(--steel); line-height: 1.4; margin-top: 2px; }
.mega-col a { display: block; padding: 6px 8px; border-radius: var(--r); font-size: .88rem; color: var(--ink); line-height: 1.35; }
.mega-col a:hover, .mega-col a[aria-current] { background: var(--mist); color: var(--blue); }
.mega-all { grid-column: 1 / -1; display: inline-flex; align-items: center; gap: 8px; margin-top: 8px; padding: 12px 10px 2px; border-top: 1px solid var(--line); font-weight: 600; color: var(--blue); font-size: .9rem; }
.mega-all .icon { width: 1em; height: 1em; }

.header-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: var(--r); place-items: center; color: var(--ink); }
.nav-toggle .icon { width: 22px; height: 22px; }
.nav-toggle .i-close { display: none; }
.nav-open .nav-toggle .i-close { display: block; }
.nav-open .nav-toggle .i-menu { display: none; }
.nav-drawer-extra, .nav-backdrop, .nav-drawer-head { display: none; }

/* ---------- 6. Home hero: the photo as a drawing sheet ---------- */
.hero { border-bottom: 1px solid var(--line); background: #fff; }
.hero-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr); gap: clamp(36px, 5vw, 72px); align-items: center; padding-block: clamp(48px, 6vw, 84px); }
.hero-kicker { display: inline-flex; align-items: center; gap: 8px; font-size: .9rem; font-weight: 600; color: var(--green); margin-bottom: 18px; }
.hero-kicker .icon { width: 18px; height: 18px; }
.hero h1 { font-size: clamp(2.2rem, 4.2vw, 3.5rem); font-stretch: 82%; font-weight: 800; line-height: 1.06; letter-spacing: -.015em; margin-bottom: 22px; max-width: 16ch; }
.hero-lead { font-size: clamp(1.02rem, 1.3vw, 1.15rem); color: var(--steel); max-width: 56ch; margin-bottom: 30px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
.hero-points { display: grid; gap: 8px; font-size: .95rem; color: var(--ink-2); }
.hero-points li { display: flex; align-items: center; gap: 10px; }
.hero-points .icon { width: 18px; height: 18px; color: var(--green); stroke-width: 2.4; }

.hero-sheet { margin: 0; position: relative; }
.sheet-frame { position: relative; border: 1px solid var(--line-2); padding: 14px; background: #fff; }
.sheet-frame::before { content: ""; position: absolute; inset: 6px; border: 1px solid var(--line); pointer-events: none; }
.sheet-frame img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; position: relative; }
.sheet-tick { position: absolute; width: 14px; height: 14px; border-color: var(--blue); border-style: solid; border-width: 0; }
.sheet-tick.t1 { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.sheet-tick.t2 { top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.sheet-tick.t3 { bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }
.sheet-tick.t4 { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }
.title-block { position: relative; margin: -1px 0 0 auto; width: min(100%, 440px); background: #fff; border: 1px solid var(--line-2); font-size: .86rem; }
.title-block dl { margin: 0; display: grid; grid-template-columns: 1fr 1fr; }
.title-block dl > div { padding: 9px 14px; border-bottom: 1px solid var(--line); }
.title-block dl > div:nth-child(odd) { border-right: 1px solid var(--line); }
.title-block dt { font-size: .74rem; color: var(--steel); }
.title-block dd { margin: 0; font-family: var(--font-head); font-stretch: 85%; font-weight: 700; font-size: 1.02rem; color: var(--ink); }
.tb-caption { margin: 0; padding: 8px 14px; font-size: .8rem; color: var(--steel); }

/* ---------- 7. Certification strip ---------- */
.standards { background: #fff; border-bottom: 1px solid var(--line); }
.standards .container { display: flex; align-items: center; gap: 28px; padding-block: 20px; }
.standards-label { margin: 0; font-size: .86rem; font-weight: 600; color: var(--steel); flex: none; }
.standards-label a:hover { color: var(--blue); }
.standards-list { display: flex; flex-wrap: wrap; gap: 8px 10px; flex: 1; justify-content: flex-end; }
.standards-list li { display: flex; }
.std { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px 7px 9px; border: 1px solid var(--line); border-radius: var(--r); font-weight: 700; font-size: .9rem; color: var(--ink); background: #fff; }
.std:hover { border-color: var(--green); }
.std small { display: none; }
.std-mark { color: var(--green); display: grid; }
.std-mark .icon { width: 17px; height: 17px; }

/* ---------- 8. Cards ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-grid.cols-4 { grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product-card { position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); --pad: 24px; padding: 0 var(--pad) var(--pad); transition: border-color .15s; }
.product-card:hover { border-color: var(--blue); }
.card-media { margin: 0 calc(-1 * var(--pad)) 0; aspect-ratio: 3 / 2; overflow: hidden; background: var(--mist-2); border-radius: var(--r-lg) var(--r-lg) 0 0; }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.p-icon { width: 44px; height: 44px; margin: -22px 0 16px; position: relative; z-index: 2; display: grid; place-items: center; background: #fff; border: 1px solid var(--line); border-radius: var(--r); color: var(--blue); }
.p-icon .icon { width: 22px; height: 22px; }
.product-card h3 { font-size: 1.16rem; margin-bottom: 8px; }
.product-card h3 a:hover { color: var(--blue); }
.product-card p { color: var(--steel); font-size: .94rem; flex: 1; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.tag { font-size: .78rem; font-weight: 600; color: var(--ink-2); background: var(--mist); padding: 3px 8px; border-radius: var(--r); }
.stretched::after { content: ""; position: absolute; inset: 0; z-index: 1; }

.spares-band { margin-top: 26px; padding: 22px 26px; border: 1px solid var(--line); border-left: 3px solid var(--blue); background: #fff; display: flex; align-items: center; justify-content: space-between; gap: 22px; flex-wrap: wrap; }
.sb-text { display: flex; align-items: center; gap: 16px; }
.sb-ico { width: 46px; height: 46px; display: grid; place-items: center; color: var(--blue); border: 1px solid var(--line); border-radius: var(--r); flex: none; }
.sb-ico .icon { width: 24px; height: 24px; }
.spares-band h3 { font-size: 1.12rem; margin: 0 0 2px; }
.spares-band p { margin: 0; color: var(--steel); font-size: .93rem; }
.spares-band .sb-links { margin-top: 6px; font-size: .88rem; }
.spares-band .sb-links a { color: var(--ink); font-weight: 600; }
.spares-band .sb-links a:hover { color: var(--blue); }

/* ---------- 9. Cooling towers (home) ---------- */
.towers-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); align-items: start; }
.towers-copy h2 { font-size: clamp(1.85rem, 3.2vw, 2.6rem); }
.towers-copy > p { color: var(--steel); font-size: 1.07rem; max-width: 56ch; }
.tower-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line-2); margin: 26px 0 28px; }
.tower-list li { border-bottom: 1px solid var(--line); }
.tower-list li:nth-child(odd) { border-right: 1px solid var(--line); }
.tower-list a { display: block; padding: 12px 14px 12px 0; }
.tower-list li:nth-child(even) a { padding-left: 14px; }
.tower-list strong { display: block; font-size: .96rem; color: var(--ink); }
.tower-list span { display: block; font-size: .83rem; color: var(--steel); }
.tower-list a:hover strong { color: var(--blue); }
.towers-media { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.towers-media figure { margin: 0; border: 1px solid var(--line); background: #fff; padding: 8px; }
.towers-media figure:first-child { grid-column: 1 / -1; }
.towers-media img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; }

/* ---------- 10. Industries ---------- */
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ind-tile { position: relative; display: flex; flex-direction: column; justify-content: flex-end; min-height: 250px; padding: 72px 22px 22px; overflow: hidden; color: #fff; isolation: isolate; border-radius: var(--r-lg); background: var(--ink-2); }
.ind-tile .tile-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.ind-tile::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(20,32,46,0) 25%, rgba(20,32,46,.86) 100%); }
.ind-tile.tall, .ind-tile.wide { grid-row: auto; grid-column: auto; }
.ind-tile .ind-icon { position: absolute; top: 18px; left: 18px; width: 38px; height: 38px; display: grid; place-items: center; background: #fff; color: var(--blue); border-radius: var(--r); }
.ind-tile .ind-icon .icon { width: 20px; height: 20px; }
.ind-tile .ind-bg-icon { display: none; }
.ind-tile h3 { color: #fff; font-size: 1.22rem; margin: 0 0 4px; }
.ind-tile p { margin: 0; font-size: .9rem; color: rgba(255,255,255,.85); }
.ind-tile .link-arrow { color: #fff; margin-top: 10px; }
.ind-tile:hover h3 { text-decoration: underline; text-underline-offset: 4px; }
.ind-tile.full { grid-column: 1 / -1; min-height: 0; padding: 22px; background: var(--blue); flex-direction: row; align-items: center; gap: 18px; flex-wrap: wrap; }
.ind-tile.full::after { display: none; }
.ind-tile.full .ind-icon { position: static; }
.ind-tile.full h3 { margin: 0; }
.ind-tile.full p { flex: 1; min-width: 240px; }
.ind-tile.full .link-arrow { margin: 0; }

/* ---------- 11. Services (home, dark band) ---------- */
.services-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; align-items: start; }
.services-intro { position: sticky; top: calc(var(--header-h) + 32px); }
.services-intro h2 { font-size: clamp(1.85rem, 3.2vw, 2.6rem); }
.services-intro > p { color: rgba(255,255,255,.74); font-size: 1.05rem; }
.response-card { margin-top: 28px; padding: 18px 20px; border: 1px solid rgba(255,255,255,.18); display: flex; gap: 16px; align-items: center; }
.response-card .rc-num { font-family: var(--font-head); font-stretch: 80%; font-size: 2.2rem; font-weight: 800; color: #fff; white-space: nowrap; line-height: 1; }
.response-card p { margin: 0; color: rgba(255,255,255,.75); font-size: .92rem; }
.response-card strong { color: #fff; display: block; }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid rgba(255,255,255,.16); }
.service-item { padding: 22px 20px 22px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
.service-item:nth-child(even) { padding-left: 20px; border-left: 1px solid rgba(255,255,255,.16); }
.service-item .s-ico { color: #8DB8EA; margin-bottom: 12px; display: block; }
.service-item .s-ico .icon { width: 24px; height: 24px; }
.service-item h3 { font-size: 1.08rem; margin-bottom: 6px; }
.service-item p { margin: 0; color: rgba(255,255,255,.7); font-size: .92rem; }
.service-item:hover h3 { text-decoration: underline; text-underline-offset: 4px; }

/* ---------- 12. Why us + datasheet ---------- */
.why-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(36px, 5vw, 72px); align-items: start; }
.why-list { display: grid; gap: 22px; margin-top: 30px; }
.why-item { display: flex; gap: 16px; }
.why-item .w-ico { width: 40px; height: 40px; display: grid; place-items: center; flex: none; color: var(--blue); border: 1px solid var(--line); border-radius: var(--r); }
.why-item .w-ico .icon { width: 21px; height: 21px; }
.why-item h3 { font-size: 1.08rem; margin-bottom: 3px; }
.why-item p { margin: 0; color: var(--steel); font-size: .95rem; }
.datasheet { border: 1px solid var(--line-2); background: #fff; }
.datasheet h3 { margin: 0; padding: 14px 18px; font-size: 1rem; border-bottom: 2px solid var(--blue); }
.datasheet table { width: 100%; border-collapse: collapse; }
.datasheet th, .datasheet td { padding: 11px 18px; border-bottom: 1px solid var(--line); text-align: left; font-size: .94rem; vertical-align: baseline; }
.datasheet th { font-weight: 500; color: var(--steel); width: 55%; }
.datasheet td { font-weight: 600; color: var(--ink); }
.datasheet td .num { font-family: var(--font-head); font-stretch: 85%; font-weight: 800; font-size: 1.2rem; }
.datasheet-note { margin: 0; padding: 16px 18px; font-size: .93rem; color: var(--ink-2); background: var(--mist); }

/* ---------- 13. Projects ---------- */
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.project-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; display: flex; flex-direction: column; }
.project-media { position: relative; aspect-ratio: 16 / 10; background: var(--mist-2); }
.project-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.project-media .badge { position: absolute; top: 12px; left: 12px; background: #fff; color: var(--ink); font-size: .78rem; font-weight: 700; padding: 4px 9px; border-radius: var(--r); }
.project-media .loc { position: absolute; bottom: 0; left: 0; right: 0; display: flex; align-items: center; gap: 6px; padding: 18px 14px 10px; color: #fff; font-size: .82rem; font-weight: 600; background: linear-gradient(180deg, transparent, rgba(20,32,46,.75)); }
.project-media .loc .icon { width: 15px; height: 15px; }
.project-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.project-body h3 { font-size: 1.1rem; line-height: 1.35; margin-bottom: 8px; }
.project-body p { color: var(--steel); font-size: .93rem; flex: 1; }
.project-specs { display: grid; grid-template-columns: repeat(3, 1fr); margin-bottom: 16px; border: 1px solid var(--line); }
.project-specs div { font-size: .75rem; color: var(--steel); line-height: 1.3; padding: 8px 10px; }
.project-specs div + div { border-left: 1px solid var(--line); }
.project-specs b { display: block; font-size: .95rem; color: var(--ink); font-weight: 700; margin-bottom: 2px; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filter-btn { padding: 8px 14px; border: 1px solid var(--line-2); border-radius: var(--r); background: #fff; font-weight: 600; font-size: .9rem; color: var(--ink); }
.filter-btn:hover { border-color: var(--ink); }
.filter-btn.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
[data-cat][hidden] { display: none !important; }

/* ---------- 14. Global reach ---------- */
.regions { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 2px solid var(--ink); }
.region { padding: 20px 20px 22px 0; border-bottom: 1px solid var(--line-2); }
.region + .region { padding-left: 20px; border-left: 1px solid var(--line); }
.region h3 { font-size: 1.1rem; margin-bottom: 8px; }
.region p { margin: 0; font-size: .92rem; color: var(--steel); }
.ports { margin-top: 32px; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.ports h3 { margin: 0; font-size: 1rem; }
.ports ul { display: flex; flex-wrap: wrap; gap: 10px; }
.ports li { display: flex; gap: 10px; align-items: baseline; padding: 8px 12px; background: #fff; border: 1px solid var(--line); border-radius: var(--r); font-size: .92rem; }
.ports li span { color: var(--steel); }

/* ---------- 15. Calculators ---------- */
.toolbox { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(36px, 5vw, 64px); align-items: center; }
.toolbox-copy ul { display: grid; gap: 10px; margin-top: 22px; }
.toolbox-copy li { display: flex; gap: 10px; color: var(--ink-2); }
.toolbox-copy li .icon { color: var(--green); stroke-width: 2.4; margin-top: 3px; }
.calc { background: #fff; border: 1px solid var(--line-2); }
.calc-tabs { display: flex; border-bottom: 1px solid var(--line); }
.calc-tab { flex: 1; padding: 15px; font-weight: 600; color: var(--steel); display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.calc-tab .icon { width: 18px; height: 18px; }
.calc-tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--blue); }
.calc-panel { padding: 26px; }
.calc-panel[hidden] { display: none; }
.calc-result { margin-top: 20px; border: 1px solid var(--line-2); display: grid; grid-template-columns: repeat(3, 1fr); }
.calc-result > div { padding: 12px 16px; }
.calc-result > div + div { border-left: 1px solid var(--line); }
.calc-result .r-main { grid-column: 1 / -1; display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; background: var(--blue-soft); border-bottom: 1px solid var(--line-2); border-left: 0 !important; }
.calc-result .r-main + div { border-left: 0; }
.calc-result .r-label { font-size: .8rem; color: var(--steel); }
.calc-result .r-big { font-family: var(--font-head); font-stretch: 80%; font-size: 2.2rem; font-weight: 800; line-height: 1; color: var(--blue-dk); }
.calc-result .r-big small { font-size: 1rem; margin-left: 6px; color: var(--ink-2); }
.calc-result .r-val { font-weight: 700; font-size: 1.1rem; }
.calc-result .r-val small { font-size: .78rem; color: var(--steel); font-weight: 500; }
.calc-note { font-size: .8rem; color: var(--steel); margin: 0; }
.calc-error { color: var(--danger); font-size: .85rem; margin: 8px 0 0; min-height: 1.2em; }

/* ---------- 16. Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: .86rem; font-weight: 600; margin-bottom: 6px; color: var(--ink); }
.field label .unit { color: var(--steel); font-weight: 500; }
.field input, .field select, .field textarea { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid var(--line-2); border-radius: var(--r); background: #fff; font-size: .96rem; }
.field textarea { min-height: 110px; resize: vertical; }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235A6876' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 34px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(15,95,184,.15); }
.field input:user-invalid, .field select:user-invalid { border-color: var(--danger); }

.rfq-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(36px, 5vw, 64px); align-items: start; }
.contact-points { display: grid; gap: 10px; margin-top: 28px; }
.cp { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--r); background: #fff; }
.cp:hover { border-color: var(--blue); }
.cp .cp-ico { width: 40px; height: 40px; display: grid; place-items: center; color: var(--blue); background: var(--blue-soft); border-radius: var(--r); flex: none; }
.cp.cp-wa .cp-ico { background: var(--green-soft); color: var(--green); }
.cp .cp-ico .icon { width: 20px; height: 20px; }
.cp > span:last-child { min-width: 0; }
.cp small { display: block; font-size: .8rem; color: var(--steel); }
.cp strong { font-size: 1rem; overflow-wrap: anywhere; }
.rfq-card { background: #fff; border: 1px solid var(--line-2); padding: clamp(22px, 3.5vw, 36px); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0 0 28px; padding: 0; counter-reset: step; border-bottom: 1px solid var(--line); }
.steps li { counter-increment: step; padding-bottom: 12px; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.steps li .bar { display: none; }
.steps li span { display: flex; gap: 8px; font-size: .88rem; font-weight: 600; color: var(--steel-2); }
.steps li span::before { content: counter(step) "."; }
.steps li.active, .steps li.done { border-bottom-color: var(--blue); }
.steps li.active span, .steps li.done span { color: var(--ink); }
.rfq-step[hidden] { display: none; }
.rfq-step h3 { font-size: 1.3rem; margin-bottom: 4px; }
.rfq-step > p { color: var(--steel); font-size: .94rem; margin-bottom: 20px; }
.choice-group { display: flex; flex-wrap: wrap; gap: 8px; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span { display: inline-flex; padding: 9px 14px; border: 1px solid var(--line-2); border-radius: var(--r); font-size: .9rem; font-weight: 600; cursor: pointer; }
.choice input:checked + span { border-color: var(--blue); background: var(--blue-soft); color: var(--blue-dk); }
.choice input:focus-visible + span { outline: 2px solid var(--blue); outline-offset: 2px; }
.dropzone { display: flex; align-items: center; gap: 14px; padding: 18px; border: 1px dashed var(--line-2); border-radius: var(--r); cursor: pointer; position: relative; }
.dropzone:hover, .dropzone.drag { border-color: var(--blue); background: var(--blue-soft); }
.dropzone .icon { width: 26px; height: 26px; color: var(--blue); }
.dropzone strong { display: block; font-size: .95rem; }
.dropzone small { color: var(--steel); font-size: .8rem; }
.dropzone input { position: absolute; opacity: 0; pointer-events: none; width: 1px; }
.rfq-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 26px; }
.rfq-nav .btn[hidden] { display: none; }
.rfq-privacy { font-size: .8rem; color: var(--steel); margin: 14px 0 0; }
.rfq-privacy a { text-decoration: underline; }
.rfq-success { text-align: center; padding: 28px 8px; }
.rfq-success .ok { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; margin: 0 auto 18px; background: var(--green-soft); color: var(--green); }
.rfq-success .ok .icon { width: 32px; height: 32px; stroke-width: 2.5; }
.rfq-success p { color: var(--steel); }

/* ---------- 17. Resources ---------- */
.resource-grid { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 22px; }
.catalogue-card { grid-row: span 2; padding: 30px; background: var(--blue); color: #fff; display: flex; flex-direction: column; border-radius: var(--r-lg); }
.catalogue-card .eyebrow { color: #fff !important; }
.catalogue-card h3 { color: #fff; font-size: 1.6rem; }
.catalogue-card p { color: rgba(255,255,255,.85); }
.catalogue-card .book { margin: auto 0 24px; align-self: center; width: 160px; aspect-ratio: 3 / 4; background: #fff; color: var(--ink); padding: 18px 16px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid rgba(255,255,255,.4); box-shadow: 14px 16px 0 -2px rgba(0,0,0,.15); }
.catalogue-card .book b { font-size: .64rem; color: var(--blue); }
.catalogue-card .book span { font-family: var(--font-head); font-stretch: 85%; font-weight: 800; font-size: 1.05rem; line-height: 1.25; }
.catalogue-card .book i { height: 3px; width: 50%; background: var(--green); }
.catalogue-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.article-card { position: relative; --pad: 22px; padding: 0 var(--pad) var(--pad); border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; display: flex; flex-direction: column; }
.article-card:hover { border-color: var(--blue); }
.article-card .card-media { margin-bottom: 18px; }
.article-meta { display: flex; gap: 8px; align-items: center; font-size: .8rem; color: var(--steel); margin-bottom: 10px; }
.article-meta .cat { color: var(--blue); font-weight: 700; }
.article-card h3 { font-size: 1.1rem; line-height: 1.35; }
.article-card p { color: var(--steel); font-size: .92rem; flex: 1; }
.soon { align-self: flex-start; font-size: .78rem; font-weight: 700; color: var(--steel); padding: 3px 8px; background: var(--mist); border-radius: var(--r); }
.download-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.download { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--r); background: #fff; }
.download:hover { border-color: var(--blue); }
.download .d-ico { width: 38px; height: 38px; display: grid; place-items: center; color: var(--blue); background: var(--blue-soft); border-radius: var(--r); flex: none; }
.download .d-ico .icon { width: 19px; height: 19px; }
.download strong { display: block; font-size: .95rem; }
.download small { color: var(--steel); font-size: .8rem; }
.download .dl { margin-left: auto; color: var(--blue); }

/* ---------- 18. Teasers, CTA, footer ---------- */
.teaser-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.teaser { padding: clamp(26px, 3.5vw, 40px); border: 1px solid var(--line-2); display: flex; flex-direction: column; align-items: flex-start; background: #fff; }
.teaser-dark { background: var(--ink); border-color: var(--ink); color: #fff; }
.teaser-dark h3 { color: #fff; }
.teaser h3 { font-size: clamp(1.35rem, 2.2vw, 1.75rem); }
.teaser p { color: var(--steel); max-width: 48ch; }
.teaser-dark p { color: rgba(255,255,255,.75); }
.teaser .t-ico { color: var(--blue); margin-bottom: 16px; }
.teaser-dark .t-ico { color: #8DB8EA; }
.teaser .t-ico .icon { width: 30px; height: 30px; }
.teaser .actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; padding-top: 8px; }
.teaser-dark .btn-outline-light { color: #fff; border-color: rgba(255,255,255,.4); }
.teaser-dark .btn-outline-light:hover { background: rgba(255,255,255,.08); border-color: #fff; color: #fff; }

.cta-band { background: var(--blue); color: #fff; }
.cta-band .container { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; padding-block: 48px; }
.cta-band h2 { color: #fff; font-size: clamp(1.5rem, 2.8vw, 2.1rem); margin-bottom: 6px; }
.cta-band p { margin: 0; color: rgba(255,255,255,.88); max-width: 62ch; }
.cta-band .actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cta-band .btn-outline-light { color: #fff; border-color: rgba(255,255,255,.55); }
.cta-band .btn-outline-light:hover { background: rgba(255,255,255,.1); border-color: #fff; color: #fff; }

.site-footer { background: var(--mist); border-top: 1px solid var(--line); color: var(--steel); font-size: .92rem; }
.footer-top { display: grid; grid-template-columns: 1.3fr 1fr 1fr .9fr 1.4fr; gap: 36px; padding-block: 60px 40px; }
.footer-brand p { margin: 18px 0; max-width: 34ch; }
.footer-logo .brand-logo { height: 44px; }
.site-footer h4 { font-family: var(--font-body); font-size: .92rem; font-weight: 700; color: var(--ink); margin-bottom: 14px; letter-spacing: 0; }
.site-footer h4.sub { margin-top: 26px; }
.footer-links { display: grid; gap: 7px; }
.footer-links a:hover, .footer-contact a:hover, .socials a:hover { color: var(--blue); }
.footer-contact { display: grid; gap: 10px; }
.footer-contact li { display: flex; gap: 10px; }
.footer-contact a { overflow-wrap: anywhere; }
.footer-contact .icon { width: 17px; height: 17px; color: var(--blue); margin-top: 3px; }
.unit-title { margin: 0 0 10px; }
.footer-contact + .unit-title { margin-top: 22px; }
.socials { display: flex; gap: 14px; flex-wrap: wrap; font-weight: 600; color: var(--ink); }
.footer-bottom { border-top: 1px solid var(--line); }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; padding-block: 18px; font-size: .84rem; }
.footer-bottom nav { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-bottom a:hover { color: var(--blue); }

.wa-float { position: fixed; bottom: 22px; right: 22px; z-index: 90; width: 54px; height: 54px; border-radius: 50%; background: #1FAF5A; color: #fff; display: grid; place-items: center; }
.wa-float .icon { width: 26px; height: 26px; }
.wa-float .tip { display: none; }
.to-top { position: fixed; bottom: 88px; right: 26px; z-index: 90; width: 42px; height: 42px; background: #fff; color: var(--ink); border: 1px solid var(--line-2); border-radius: var(--r); display: grid; place-items: center; opacity: 0; visibility: hidden; transition: opacity .2s, visibility .2s; }
.to-top.show { opacity: 1; visibility: visible; }
.to-top .icon { transform: rotate(-90deg); width: 18px; height: 18px; }

/* ---------- 19. Inner pages ---------- */
.page-hero { background: var(--mist); border-bottom: 1px solid var(--line); }
.page-hero-inner { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr); gap: clamp(32px, 5vw, 64px); align-items: center; padding-block: clamp(34px, 5vw, 60px) clamp(40px, 6vw, 72px); }
.page-hero-inner.single { grid-template-columns: minmax(0, 1fr); }
.page-hero-inner.single > div { max-width: 880px; }
.page-hero h1 { font-size: clamp(2rem, 3.8vw, 3rem); font-stretch: 84%; font-weight: 800; margin-bottom: 16px; }
.page-hero .lead { color: var(--steel); font-size: clamp(1rem, 1.25vw, 1.12rem); max-width: 66ch; margin-bottom: 26px; }
.page-hero .hero-ctas { margin-bottom: 0; }
.breadcrumb { margin-bottom: 20px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 4px 8px; margin: 0; padding: 0; list-style: none; font-size: .86rem; color: var(--steel); }
.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: var(--line-2); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb [aria-current] { color: var(--ink); }
.hero-aside { background: #fff; border: 1px solid var(--line-2); }
.hero-aside.has-media { padding: 8px; }
.hero-media { aspect-ratio: 3 / 2; overflow: hidden; background: var(--mist-2); }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-media.portrait { aspect-ratio: 900 / 1273; max-height: 460px; }
.hero-aside-body { padding: 14px 10px 8px; }
.hero-aside h2 { font-family: var(--font-body); font-size: .86rem; font-weight: 700; color: var(--steel); margin-bottom: 8px; letter-spacing: 0; }
.hero-aside .facts { display: grid; gap: 6px; }
.hero-aside .facts li { display: flex; align-items: center; gap: 9px; font-size: .94rem; font-weight: 600; }
.hero-aside .facts .icon { width: 17px; height: 17px; color: var(--green); stroke-width: 2.4; }
.cert-hero { max-width: 320px; justify-self: end; width: 100%; }
.article-head-meta { display: flex; gap: 10px; color: var(--steel); font-size: .9rem; margin-bottom: 8px; }

.detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: clamp(36px, 5vw, 56px); align-items: start; }
.detail-main > .block + .block { margin-top: 52px; }
.detail-main h2 { font-size: clamp(1.45rem, 2.2vw, 1.85rem); margin-bottom: 18px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.detail-main .intro { font-size: 1.07rem; color: var(--ink-2); }
.sticky-aside { position: sticky; top: calc(var(--header-h) + 24px); display: grid; gap: 16px; }
.aside-card { padding: 22px; border: 1px solid var(--line-2); background: #fff; }
.aside-card h3 { font-size: 1.08rem; margin-bottom: 8px; }
.aside-card p { color: var(--steel); font-size: .93rem; }
.aside-card.dark { border-top: 3px solid var(--blue); }
.aside-card .btn { width: 100%; margin-top: 4px; }
.aside-contact { display: grid; gap: 8px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); font-size: .92rem; }
.aside-contact a { display: flex; align-items: center; gap: 9px; overflow-wrap: anywhere; }
.aside-contact a:hover { color: var(--blue); }
.aside-contact .icon { width: 17px; height: 17px; color: var(--blue); }
.aside-links { display: grid; }
.aside-links a { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 9px 2px; border-bottom: 1px solid var(--line); font-size: .93rem; }
.aside-links a:last-child { border-bottom: 0; }
.aside-links a:hover { color: var(--blue); }
.aside-links a[aria-current] { color: var(--blue); font-weight: 700; }
.aside-links .icon { width: 15px; height: 15px; opacity: .5; }

.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--line); }
.feature { display: flex; gap: 14px; padding: 18px 18px 18px 0; border-bottom: 1px solid var(--line); }
.feature:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--line); }
.feature .f-ico { color: var(--blue); flex: none; }
.feature .f-ico .icon { width: 24px; height: 24px; }
.feature h3 { font-size: 1.02rem; margin-bottom: 3px; }
.feature p { margin: 0; color: var(--steel); font-size: .93rem; }
.variant-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.variant { padding: 18px; background: var(--mist); border-top: 2px solid var(--ink); }
.variant h3 { font-size: 1rem; margin-bottom: 6px; }
.variant p { margin: 0; color: var(--steel); font-size: .92rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line-2); }
.spec-table { width: 100%; border-collapse: collapse; font-size: .95rem; background: #fff; }
.spec-table th, .spec-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { width: 38%; font-weight: 600; background: var(--mist); }
.spec-table thead th { background: #fff; color: var(--ink); width: auto; font-size: .86rem; border-bottom: 2px solid var(--blue); }
.compare-table th:first-child { width: 22%; }
.compare-table td, .compare-table th { min-width: 140px; }
.compare-table tbody th a { color: var(--blue); }
.chip-list { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 6px 12px; border: 1px solid var(--line-2); border-radius: var(--r); font-size: .9rem; font-weight: 600; background: #fff; }
.check-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; }
.check-list.one-col { grid-template-columns: 1fr; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; }
.check-list .icon { width: 18px; height: 18px; color: var(--green); stroke-width: 2.6; margin-top: 4px; }
.faq { border-top: 1px solid var(--line-2); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 16px; padding: 16px 0; font-weight: 600; font-size: 1.02rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--blue); flex: none; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--steel); padding: 0 0 18px; margin: 0; max-width: 72ch; }
.process { display: grid; grid-template-columns: repeat(4, 1fr); counter-reset: proc; border-top: 1px solid var(--line); }
.process-step { padding: 20px 18px 20px 0; counter-increment: proc; }
.process-step + .process-step { padding-left: 18px; border-left: 1px solid var(--line); }
.process-step::before { content: "Step " counter(proc); display: block; font-size: .82rem; font-weight: 700; color: var(--blue); margin-bottom: 8px; }
.process-step h3 { font-size: 1.02rem; margin-bottom: 4px; }
.process-step p { margin: 0; color: var(--steel); font-size: .92rem; }
.section-dark .process { border-color: rgba(255,255,255,.16); }
.section-dark .process-step + .process-step { border-color: rgba(255,255,255,.16); }
.section-dark .process-step::before { color: #8DB8EA; }
.section-dark .process-step p { color: rgba(255,255,255,.7); }
.challenge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.challenge { padding: 22px; background: #fff; border: 1px solid var(--line); }
.challenge .c-num { display: block; font-family: var(--font-head); font-weight: 800; font-size: 1.3rem; color: var(--blue); margin-bottom: 8px; }
.challenge h3 { font-size: 1.08rem; margin-bottom: 6px; }
.challenge p { margin: 0; color: var(--steel); font-size: .93rem; }
.mini-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.mini-tile { display: flex; align-items: center; gap: 10px; padding: 14px; border: 1px solid var(--line-2); border-radius: var(--r); background: #fff; font-weight: 600; font-size: .94rem; }
.mini-tile:hover { border-color: var(--blue); color: var(--blue); }
.mini-tile .icon { width: 20px; height: 20px; color: var(--blue); }

.story { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(36px, 5vw, 64px); align-items: start; }
.story h2 { font-size: clamp(1.85rem, 3.2vw, 2.5rem); }
.story .prose p { color: var(--ink-2); font-size: 1.05rem; }
.mv-grid { display: grid; gap: 14px; }
.mv-card { padding: 22px; border: 1px solid var(--line); background: #fff; }
.mv-card.dark { border-top: 3px solid var(--blue); }
.mv-card p { margin: 0; font-size: 1.02rem; }
.value-list { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; }
.value-list li { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.value-list .icon { width: 17px; height: 17px; color: var(--green); }
.mv-photo { margin: 0; border: 1px solid var(--line); padding: 8px; background: #fff; }
.mv-photo img { width: 100%; height: auto; }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.2); }
.timeline li { padding: 18px 18px 22px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.timeline li:not(:nth-child(4n+1)) { padding-left: 18px; border-left: 1px solid rgba(255,255,255,.12); }
.tl-year { display: block; font-family: var(--font-head); font-stretch: 80%; font-size: 1.6rem; font-weight: 800; color: #fff; line-height: 1; margin-bottom: 6px; }
.timeline p { margin: 0; color: rgba(255,255,255,.75); font-size: .92rem; }
.factory { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 5vw, 64px); align-items: center; }
.factory h2 { font-size: clamp(1.85rem, 3.2vw, 2.5rem) !important; color: var(--ink) !important; }
.factory-photos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.factory-photos img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border: 1px solid var(--line); padding: 6px; background: #fff; }


.cert-group-title { font-size: clamp(1.45rem, 2.3vw, 1.9rem); margin-bottom: 22px; }
.cert-grid-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cert-card { position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); }
.cert-card:hover { border-color: var(--green); }
.cert-thumb { aspect-ratio: 4 / 3; overflow: hidden; background: var(--mist-2); border-bottom: 1px solid var(--line); }
.cert-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.cert-body { padding: 16px 18px 18px; display: flex; flex-direction: column; flex: 1; }
.cert-unit { align-self: flex-start; font-size: .76rem; font-weight: 700; color: var(--green); margin-bottom: 6px; }
.cert-card h3 { font-size: 1.02rem; line-height: 1.35; margin-bottom: 6px; }
.cert-card p { font-size: .9rem; color: var(--steel); flex: 1; }

.office-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.office-grid.two { grid-template-columns: repeat(2, 1fr); }
.office-card { --pad: 22px; padding: 0 var(--pad) var(--pad); border: 1px solid var(--line); background: #fff; display: grid; gap: 8px; align-content: start; }
.office-card .card-media { margin-bottom: 10px; border-radius: 0; }
.office-card h3 { font-size: 1.1rem; margin: 0; }
.office-card .badge-hq { justify-self: start; font-size: .76rem; font-weight: 700; color: var(--blue); }
.office-card p { margin: 0; color: var(--steel); font-size: .93rem; display: flex; gap: 10px; }
.office-card p .icon { width: 17px; height: 17px; color: var(--blue); margin-top: 4px; }
.office-card a { overflow-wrap: anywhere; }
.office-card a:hover { color: var(--blue); }
.office-card .check-list { margin-top: 4px; }

.prose { max-width: 760px; }
.prose h2 { font-size: clamp(1.35rem, 2.1vw, 1.7rem); margin: 1.8em 0 .6em; }
.prose h3 { font-size: 1.12rem; margin: 1.4em 0 .4em; }
.prose p, .prose li { color: var(--ink-2); font-size: 1.04rem; }
.prose ul { list-style: disc; padding-left: 1.3em; margin: 0 0 1.2em; display: grid; gap: 6px; }
.prose a { color: var(--blue); text-decoration: underline; }
.prose .callout { margin: 26px 0; padding: 18px 20px; background: var(--blue-soft); border-left: 3px solid var(--blue); }
.prose .callout p { margin: 0; color: var(--ink); }
.legal-note { padding: 14px 18px; background: var(--mist); border-left: 3px solid var(--line-2); font-size: .92rem; margin-bottom: 26px; }
.article-figure { margin: 0 0 26px; border: 1px solid var(--line); padding: 8px; }
.article-figure img { width: 100%; height: auto; }
.formula-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.formula { padding: 22px; border: 1px solid var(--line); background: #fff; }
.formula h3 { font-size: 1.04rem; }
.formula code { display: block; text-align: center; font-family: var(--font-head); font-size: 1.12rem; font-weight: 700; background: var(--mist); padding: 12px; margin: 10px 0; }
.formula p { color: var(--steel); font-size: .92rem; margin: 0; }
.error-page { text-align: center; padding-block: clamp(80px, 12vw, 140px); }
.error-page .code { font-family: var(--font-head); font-stretch: 75%; font-size: clamp(5rem, 14vw, 9rem); font-weight: 800; line-height: 1; color: var(--blue); }
.error-page p { color: var(--steel); }
.error-page .hero-ctas { justify-content: center; margin-top: 24px; }

.gallery { display: grid; gap: 12px; }
.gallery.g-1 { grid-template-columns: 1fr; }
.gallery.g-2 { grid-template-columns: 1fr 1fr; }
.gallery.g-3 { grid-template-columns: 2fr 1fr; grid-template-rows: 1fr 1fr; }
.gallery.g-3 figure:first-child { grid-row: span 2; }
.gallery figure { margin: 0; overflow: hidden; background: var(--mist-2); border: 1px solid var(--line); }
.gallery img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 3 / 2; }
.gallery.g-3 figure:first-child img { aspect-ratio: auto; }
.client-figure { margin: 0 0 20px; background: #fff; border: 1px solid var(--line); }
.client-figure img { width: 100%; height: auto; }
.client-figure figcaption { padding: 12px 18px; font-size: .88rem; color: var(--steel); border-top: 1px solid var(--line); }
.sub-h { font-size: 1.25rem; margin: 40px 0 14px; }
.sw-list li strong { color: var(--ink); }
.stats-panel { border: 1px solid var(--line-2); background: #fff; }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; }
.stat { padding: 20px; border-bottom: 1px solid var(--line); }
.stat:nth-child(odd) { border-right: 1px solid var(--line); }
.stat-value { font-family: var(--font-head); font-stretch: 80%; font-size: clamp(1.9rem, 3vw, 2.4rem); font-weight: 800; line-height: 1; margin-bottom: 6px; color: var(--ink); }
.stat-value .suffix { color: var(--blue); font-size: .6em; margin-left: 2px; }
.stat-label { font-size: .88rem; color: var(--steel); line-height: 1.4; }
.cap-tables { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cap-tables.two { grid-template-columns: repeat(2, 1fr); }
.cap-table { background: #fff; border: 1px solid var(--line); padding: 18px; }
.cap-table h3 { font-size: 1rem; margin: 0 0 10px; }
.cap-table .spec-table th { width: 50%; }
.machine-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.machine { margin: 0; background: #fff; border: 1px solid var(--line); display: flex; flex-direction: column; }
.machine img { width: 100%; height: 220px; object-fit: cover; }
.machine figcaption { padding: 14px 16px 16px; display: grid; gap: 4px; }
.machine figcaption strong { font-size: .97rem; line-height: 1.3; }
.machine figcaption span { color: var(--steel); font-size: .86rem; }

/* ---------- 20. Responsive ---------- */
@media (min-width: 1201px) { .nav-drawer-head { display: none !important; } }
@media (min-width: 1201px) and (max-width: 1360px) {
  .nav-link { padding-inline: 7px; font-size: .88rem; }
  .nav-link::after { left: 7px; right: 7px; }
  .header-inner { gap: 12px; }
}
@media (max-width: 1200px) {
  :root { --header-h: 68px; }
  .nav-toggle { display: grid; }
  .header-actions { margin-left: auto; }
  .primary-nav { position: fixed; top: 0; bottom: 0; right: 0; z-index: 120; width: min(400px, 88vw); background: #fff; margin: 0; overflow-y: auto; padding: 18px 20px 32px; clip-path: inset(0 0 0 100%); visibility: hidden; transition: clip-path .3s ease, visibility .3s; }
  .nav-open .primary-nav { clip-path: inset(0); visibility: visible; }
  .nav-backdrop { display: block; position: fixed; inset: 0; z-index: 110; background: rgba(20,32,46,.45); opacity: 0; visibility: hidden; transition: opacity .3s; }
  .nav-open .nav-backdrop { opacity: 1; visibility: visible; }
  .nav-open .site-header { z-index: 130; }
  .nav-open { overflow: hidden; }
  .nav-drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
  .nav-drawer-head .brand-logo { height: 38px; }
  .nav-list { flex-direction: column; align-items: stretch; }
  .nav-list > li { border-bottom: 1px solid var(--line); }
  .nav-link { height: auto; width: 100%; justify-content: space-between; padding: 15px 2px; font-size: 1.02rem; }
  .nav-link::after { display: none; }
  .mega, .mega.mega-sm, .mega.mega-products, .mega.mega-towers, .mega.mega-certs { position: static; width: auto; opacity: 1; visibility: visible; box-shadow: none; border: 0; padding: 0 0 12px; display: none; grid-template-columns: 1fr; }
  .has-mega:hover > .mega, .has-mega:focus-within > .mega { display: none; }
  .has-mega.open > .mega { display: grid; }
  .mega-grid, .mega-group.mg-hx .mega-grid { grid-template-columns: 1fr; }
  .mega-link { padding: 8px 4px; }
  .mega-link small { display: none; }
  .nav-drawer-extra { display: grid; gap: 10px; margin-top: 22px; }
  .topbar-contact .hide-md { display: none; }
}
@media (max-width: 1180px) {
  .footer-top { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .product-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1080px) {
  .hero { background: #fff; }
  .hero-inner, .towers-split, .services-wrap, .why-wrap, .toolbox, .rfq-wrap, .factory, .page-hero-inner, .detail-layout, .story { grid-template-columns: minmax(0, 1fr); }
  .hero h1 { max-width: 22ch; }
  .services-intro, .sticky-aside { position: static; }
  .product-grid, .project-grid, .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .regions { grid-template-columns: 1fr 1fr; }
  .region:nth-child(3) { padding-left: 0; border-left: 0; }
  .resource-grid { grid-template-columns: 1fr 1fr; }
  .catalogue-card { grid-row: auto; grid-column: 1 / -1; }
  .catalogue-card .book { display: none; }
  .standards .container { flex-direction: column; align-items: flex-start; gap: 12px; }
  .standards-list { justify-content: flex-start; }
  .process, .mini-grid, .challenge-grid, .office-grid, .formula-grid, .variant-grid { grid-template-columns: repeat(2, 1fr); }
  .process-step:nth-child(3) { padding-left: 0; border-left: 0; }
  .timeline, .machine-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline li:not(:nth-child(4n+1)) { padding-left: 0; border-left: 0; }
  .timeline li:nth-child(even) { padding-left: 18px; border-left: 1px solid rgba(255,255,255,.12); }
  .cap-tables { grid-template-columns: 1fr; }
  .cert-grid-cards { grid-template-columns: repeat(2, 1fr); }
  .cert-hero { justify-self: start; }
}
@media (max-width: 680px) {
  :root { --gutter: 16px; }
  body { font-size: 16px; }
  .topbar-note { display: none; }
  .topbar .container { justify-content: center; }
  .topbar-contact { gap: 16px; }
  .header-actions .btn { display: none; }
  .brand-logo { height: 40px; }
  .hero-ctas .btn { flex: 1 1 100%; }
  .title-block { width: 100%; }
  .product-grid, .product-grid.cols-4, .project-grid, .industry-grid, .service-grid, .resource-grid, .form-grid, .tower-list, .regions,
  .feature-grid, .variant-grid, .check-list, .process, .challenge-grid, .mini-grid, .teaser-grid, .office-grid, .office-grid.two, .download-list, .formula-grid,
  .timeline, .machine-grid, .cap-tables.two, .cert-grid-cards, .value-list { grid-template-columns: 1fr; }
  .tower-list li:nth-child(odd), .region + .region, .feature:nth-child(even), .service-item:nth-child(even), .process-step + .process-step, .timeline li:nth-child(even) { border-left: 0; border-right: 0; padding-left: 0; }
  .tower-list li:nth-child(even) a { padding-left: 0; }
  .service-item, .feature { padding-right: 0; }
  .calc-panel { padding: 18px; }
  .calc-result { grid-template-columns: 1fr 1fr; }
  .calc-result > div:nth-child(4) { border-left: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-contact-col { grid-column: 1 / -1; }
  .cta-band .actions, .cta-band .actions .btn, .spares-band .btn { width: 100%; }
  .rfq-nav .btn { flex: 1; }
  .gallery.g-2, .gallery.g-3 { grid-template-columns: 1fr; grid-template-rows: none; }
  .gallery.g-3 figure:first-child { grid-row: auto; }
  .gallery.g-3 figure:first-child img { aspect-ratio: 3 / 2; }
  .spec-table th, .spec-table td { padding: 10px 12px; }
  .ind-tile { min-height: 210px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; }
}