/* =============================================================
   DYNASEIKI INDUSTRIAL SUPPLIES — Steel + Safety Orange theme
   Design system + components. Vanilla CSS, no build step.
   ============================================================= */

/* ---------- Design tokens ---------- */
:root {
  --ink: #16181D;
  --steel: #2B2F36;
  --steel-mid: #5A616B;
  --steel-soft: #8B929B;
  --line: #E4E7EB;
  --line-dark: #363B43;
  --bg: #FFFFFF;
  --bg-soft: #F4F5F7;
  --bg-softer: #ECEEF1;
  --accent: #FF6A13;
  --accent-dark: #D9540A;
  --white: #FFFFFF;

  --font-head: "Oswald", "Arial Narrow", system-ui, sans-serif;
  --font-body: "Inter", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --container: 1200px;
  --gutter: clamp(20px, 5vw, 48px);
  --header-h: 84px;

  --shadow-sm: 0 1px 3px rgba(22,24,29,.08);
  --shadow-md: 0 12px 30px rgba(22,24,29,.12);
  --radius: 3px;
  --t: .25s cubic-bezier(.4,0,.2,1);
}

/* ---------- Reset / base ---------- */
*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4 { font-family: var(--font-head); font-weight: 600; line-height: 1.08; margin: 0; letter-spacing: .2px; }

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(56px, 8vw, 104px); }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--ink); color: #D6DAE0; }
.section--dark h2, .section--dark h3 { color: #fff; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); font-weight: 500;
  text-transform: uppercase; letter-spacing: 3px; font-size: 13px;
  color: var(--accent); margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--accent); display: inline-block; }
.section--dark .eyebrow { color: var(--accent); }

.section-title { font-size: clamp(30px, 4.4vw, 50px); text-transform: uppercase; letter-spacing: .5px; }
.section-intro { max-width: 620px; color: var(--steel-mid); margin-top: 18px; font-size: 1.05rem; }
.section--dark .section-intro { color: #A7AEB8; }

.text-accent { color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); font-weight: 500; text-transform: uppercase;
  letter-spacing: 1.5px; font-size: 14px;
  padding: 15px 30px; border: 2px solid transparent;
  transition: background var(--t), color var(--t), border-color var(--t), transform var(--t);
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-dark); }
.btn--ghost { border-color: var(--ink); color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: #fff; }
.btn--light { border-color: rgba(255,255,255,.6); color: #fff; }
.btn--light:hover { background: #fff; color: var(--ink); border-color: #fff; }
.btn .arrow { transition: transform var(--t); }
.btn:hover .arrow { transform: translateX(4px); }

.link-more {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1.5px;
  font-size: 13px; font-weight: 500; color: var(--ink);
}
.link-more::after { content: "→"; color: var(--accent); transition: transform var(--t); }
.link-more:hover::after { transform: translateX(5px); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(255,255,255,.0);
  transition: background var(--t), box-shadow var(--t), height var(--t);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-header.scrolled,
.site-header.solid { background: #fff; box-shadow: var(--shadow-sm); height: 70px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 42px; height: 42px; }

/* UTD Asia brand mark — wordmark is part of the image, so no text lockup */
.brand img.brand__logo { width: auto; height: 40px; object-fit: contain; display: block; }
.brand img.brand__logo--footer { height: 36px; }
/* Over the dark hero the mark would disappear — render it white until the header solidifies */
.site-header.transparent:not(.scrolled) .brand__logo { filter: brightness(0) invert(1); }
@media (max-width: 620px) { .brand img.brand__logo { height: 34px; } }
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__name {
  font-family: var(--font-head); font-weight: 700; font-size: 23px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--ink);
}
.brand__tag { font-size: 9.5px; letter-spacing: 3.4px; text-transform: uppercase; color: var(--steel-mid); font-weight: 600; }

/* transparent header state (home hero): light text */
.site-header.transparent:not(.scrolled) .brand__name { color: #fff; }
.site-header.transparent:not(.scrolled) .brand__tag { color: rgba(255,255,255,.75); }
.site-header.transparent:not(.scrolled) .nav > li > a { color: #fff; }
.site-header.transparent:not(.scrolled) .nav-toggle span { background: #fff; }

/* Nav */
.nav { display: flex; align-items: center; gap: 4px; }
.nav > li { position: relative; }
.nav > li > a {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--font-head); font-weight: 500; text-transform: uppercase;
  letter-spacing: 1.3px; font-size: 14.5px; color: var(--ink);
  padding: 12px 16px; transition: color var(--t);
}
.nav > li > a:hover, .nav > li.active > a { color: var(--accent); }
.nav > li.active > a { position: relative; }
.nav > li > a .caret { font-size: 9px; opacity: .6; }

/* dropdown */
.has-sub .submenu {
  position: absolute; top: 100%; left: 0; min-width: 240px;
  background: #fff; box-shadow: var(--shadow-md);
  border-top: 3px solid var(--accent);
  padding: 8px 0; opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity var(--t), transform var(--t), visibility var(--t);
}
.has-sub:hover .submenu, .has-sub:focus-within .submenu { opacity: 1; visibility: visible; transform: translateY(0); }
.submenu a {
  display: block; padding: 12px 22px; font-size: 14px; color: var(--steel);
  border-left: 3px solid transparent; transition: all var(--t);
}
.submenu a:hover { background: var(--bg-soft); border-left-color: var(--accent); color: var(--ink); padding-left: 26px; }

.header-actions { display: flex; align-items: center; gap: 18px; }
.header-cta { }

/* hamburger */
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; }
.nav-toggle span { width: 26px; height: 2px; background: var(--ink); transition: transform var(--t), opacity var(--t); }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO (home)
   ============================================================ */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; color: #fff; overflow: hidden; }
.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute; inset: 0; opacity: 0; transform: scale(1.06);
  background-size: cover; background-position: center;
  transition: opacity 1.1s ease, transform 6s ease;
}
.hero__slide.active { opacity: 1; transform: scale(1); }
.hero__slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(16,18,22,.86) 0%, rgba(16,18,22,.62) 45%, rgba(16,18,22,.28) 100%);
}
.hero__inner { position: relative; z-index: 2; padding-top: var(--header-h); width: 100%; }
.hero__label { color: var(--accent); }
.hero h1 {
  font-size: clamp(42px, 7vw, 88px); text-transform: uppercase; letter-spacing: 1px;
  max-width: 15ch;
}
.hero h1 .thin { font-weight: 300; }
.hero__text { max-width: 560px; margin: 22px 0 34px; color: #D7DBE1; font-size: 1.12rem; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* slide indicators */
.hero__dots { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); z-index: 3; display: flex; gap: 14px; }
.hero__dots button {
  width: 40px; height: 3px; background: rgba(255,255,255,.35); border: 0; padding: 0;
  transition: background var(--t);
}
.hero__dots button.active { background: var(--accent); }
.hero__meta {
  position: absolute; right: var(--gutter); bottom: 40px; z-index: 3;
  font-family: var(--font-head); letter-spacing: 2px; font-size: 13px; color: rgba(255,255,255,.6);
  text-transform: uppercase;
}
.hero__meta b { color: #fff; }

/* page hero (interior pages) */
.page-hero {
  position: relative; padding-top: calc(var(--header-h) + 70px); padding-bottom: 70px;
  color: #fff; background: var(--ink); overflow: hidden;
}
.page-hero__bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .35; }
.page-hero::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(16,18,22,.5), rgba(16,18,22,.85)); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(38px, 6vw, 66px); text-transform: uppercase; letter-spacing: 1px; }
.page-hero p { color: #B9BFC8; max-width: 620px; margin-top: 16px; font-size: 1.08rem; }
.breadcrumb { display: flex; gap: 10px; font-size: 13px; color: var(--steel-soft); text-transform: uppercase; letter-spacing: 1.5px; font-family: var(--font-head); margin-bottom: 20px; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--accent); }

/* ============================================================
   PRODUCT / DIVISION CARDS
   ============================================================ */
.grid { display: grid; gap: 26px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.divisions { margin-top: 52px; }
.div-card {
  position: relative; display: flex; flex-direction: column; min-height: 440px;
  overflow: hidden; background: var(--ink); color: #fff;
}
.div-card__img { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform .6s ease; }
.div-card::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(16,18,22,.15) 0%, rgba(16,18,22,.55) 55%, rgba(16,18,22,.92) 100%); }
.div-card:hover .div-card__img { transform: scale(1.08); }
.div-card__body { position: relative; z-index: 2; margin-top: auto; padding: 30px; }
.div-card__no { font-family: var(--font-head); font-size: 13px; letter-spacing: 3px; color: var(--accent); }
.div-card__title { font-size: 28px; text-transform: uppercase; margin: 8px 0 10px; }
.div-card__desc { color: #C4CAD2; font-size: .95rem; margin-bottom: 16px; opacity: 0; max-height: 0; transition: opacity var(--t), max-height var(--t); }
.div-card:hover .div-card__desc { opacity: 1; max-height: 120px; }
.div-card__link { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1.5px; font-size: 13px; color: #fff; }
.div-card__link::after { content:"→"; color: var(--accent); transition: transform var(--t); }
.div-card:hover .div-card__link::after { transform: translateX(5px); }
.div-card__bar { position: absolute; left: 0; bottom: 0; height: 4px; width: 0; background: var(--accent); z-index: 3; transition: width .5s ease; }
.div-card:hover .div-card__bar { width: 100%; }

/* ============================================================
   FEATURE / SPLIT SECTIONS
   ============================================================ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 70px); align-items: center; }
.split--reverse .split__media { order: 2; }
.split__media { position: relative; }
.split__media img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
.split__media .badge {
  position: absolute; left: 0; bottom: 0; background: var(--accent); color: #fff;
  padding: 18px 26px; font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1px;
}
.split__media .badge b { display: block; font-size: 30px; }
.split__body h2 { font-size: clamp(28px, 3.6vw, 42px); text-transform: uppercase; margin-bottom: 20px; }
.split__body p { color: var(--steel-mid); margin: 0 0 18px; }
.section--dark .split__body p { color: #A7AEB8; }

/* feature list */
.feature-list { display: grid; gap: 2px; margin: 26px 0; }
.feature-list li { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.section--dark .feature-list li { border-color: var(--line-dark); }
.feature-list .fi-no { font-family: var(--font-head); color: var(--accent); font-weight: 600; font-size: 18px; min-width: 34px; }
.feature-list h4 { font-size: 18px; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 4px; }
.feature-list p { font-size: .92rem; margin: 0; }

/* ---------- Stats strip ---------- */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line-dark); }
.stat { background: var(--ink); padding: 34px 26px; text-align: center; }
.stat__num { font-family: var(--font-head); font-size: clamp(34px,4vw,52px); color: #fff; line-height: 1; }
.stat__num .u { color: var(--accent); }
.stat__label { text-transform: uppercase; letter-spacing: 2px; font-size: 12px; color: var(--steel-soft); margin-top: 10px; font-family: var(--font-head); }

/* ---------- Icon feature cards ---------- */
.icard { background: #fff; border: 1px solid var(--line); padding: 34px 28px; transition: transform var(--t), box-shadow var(--t), border-color var(--t); }
.icard:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.icard__icon { width: 54px; height: 54px; display: grid; place-items: center; background: var(--bg-soft); color: var(--accent); margin-bottom: 20px; }
.icard__icon svg { width: 28px; height: 28px; }
.icard h3 { font-size: 21px; text-transform: uppercase; margin-bottom: 12px; }
.icard p { color: var(--steel-mid); font-size: .95rem; margin: 0; }

/* ---------- Product spec grid (for product pages) ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.chip { font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1px; font-size: 12px; padding: 8px 14px; background: var(--bg-soft); border: 1px solid var(--line); color: var(--steel); }
.section--dark .chip { background: var(--steel); border-color: var(--line-dark); color: #D6DAE0; }

.prod-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.prod-list li { background: #fff; padding: 22px 24px; display: flex; gap: 16px; align-items: flex-start; }
.prod-list .pl-mark { color: var(--accent); font-family: var(--font-head); font-weight: 700; }
.prod-list h4 { font-size: 17px; text-transform: uppercase; margin-bottom: 4px; }
.prod-list p { font-size: .9rem; color: var(--steel-mid); margin: 0; }

/* ---------- About: profile spec table ---------- */
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { text-align: left; padding: 18px 20px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table th {
  width: 34%; font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1.5px;
  font-size: 13px; color: var(--steel-mid); font-weight: 500; background: var(--bg-soft);
}
.spec-table td { color: var(--ink); }

/* ---------- Timeline ---------- */
.timeline { position: relative; margin-top: 40px; }
.timeline::before { content:""; position:absolute; left: 90px; top: 0; bottom: 0; width: 2px; background: var(--line); }
.tl-item { position: relative; display: grid; grid-template-columns: 90px 1fr; gap: 36px; padding-bottom: 34px; }
.tl-year { font-family: var(--font-head); font-size: 22px; color: var(--accent); text-align: right; }
.tl-item::before { content:""; position:absolute; left: 85px; top: 8px; width: 12px; height: 12px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 0 4px #fff; }
.tl-body h4 { text-transform: uppercase; font-size: 18px; margin-bottom: 6px; }
.tl-body p { color: var(--steel-mid); margin: 0; font-size: .95rem; }

/* ============================================================
   NEWS
   ============================================================ */
.news-list { border-top: 1px solid var(--line); }
.news-row {
  display: grid; grid-template-columns: 150px 150px 1fr auto; gap: 24px; align-items: center;
  padding: 24px 6px; border-bottom: 1px solid var(--line); transition: background var(--t), padding var(--t);
}
.news-row:hover { background: var(--bg-soft); padding-inline: 18px; }
.news-date { font-family: var(--font-head); color: var(--steel-mid); letter-spacing: 1px; font-size: 14px; }
.news-tag { justify-self: start; font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1px; font-size: 11px; padding: 5px 12px; background: var(--ink); color: #fff; }
.news-tag--ir { background: var(--accent); }
.news-tag--csr { background: var(--steel-mid); }
.news-title { font-size: 1.02rem; color: var(--ink); }
.news-row:hover .news-title { color: var(--accent); }
.news-row .arrow { color: var(--accent); opacity: 0; transition: opacity var(--t), transform var(--t); }
.news-row:hover .arrow { opacity: 1; transform: translateX(4px); }

/* teaser cards (home) */
.news-cards { margin-top: 46px; }
.news-card { background: #fff; border: 1px solid var(--line); padding: 30px; display: flex; flex-direction: column; transition: transform var(--t), box-shadow var(--t); }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.news-card .news-date { margin-bottom: 12px; }
.news-card h3 { font-size: 20px; text-transform: none; letter-spacing: 0; line-height: 1.3; margin-bottom: 16px; font-family: var(--font-body); font-weight: 700; }
.news-card .link-more { margin-top: auto; }

/* ============================================================
   CTA band
   ============================================================ */
.cta-band { position: relative; background: var(--accent); color: #fff; overflow: hidden; }
.cta-band .container { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; padding-block: 56px; }
.cta-band h2 { font-size: clamp(26px, 3.6vw, 40px); text-transform: uppercase; max-width: 18ch; }
.cta-band p { color: rgba(255,255,255,.9); margin-top: 8px; }
.cta-band__deco { position: absolute; right: -40px; top: -40px; font-family: var(--font-head); font-weight: 700; font-size: 240px; color: rgba(255,255,255,.08); line-height: 1; z-index: 1; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(30px,5vw,64px); }
.contact-info h3 { text-transform: uppercase; font-size: 22px; margin-bottom: 22px; }
.info-row { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.info-row .ir-icon { color: var(--accent); flex: none; margin-top: 3px; }
.info-row .ir-label { font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1.5px; font-size: 12px; color: var(--steel-mid); }
.info-row .ir-val { font-size: 1rem; }

.form { display: grid; gap: 18px; }
.form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field label { display: block; font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1.5px; font-size: 12px; color: var(--steel-mid); margin-bottom: 8px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 14px 16px; border: 1px solid var(--line); background: #fff; font-family: inherit; font-size: 15px; color: var(--ink);
  transition: border-color var(--t), box-shadow var(--t);
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,106,19,.12); }
.field textarea { resize: vertical; min-height: 140px; }
.form-note { font-size: .85rem; color: var(--steel-soft); }
.map-embed { width: 100%; height: 340px; border: 0; filter: grayscale(.2) contrast(1.05); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--ink); color: #9CA3AD; padding-top: 72px; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 52px; border-bottom: 1px solid var(--line-dark); }
.footer-brand .brand__name { color: #fff; }
.footer-brand p { margin: 18px 0 0; font-size: .92rem; max-width: 34ch; }
.footer-col h4 { color: #fff; text-transform: uppercase; letter-spacing: 1.5px; font-size: 14px; margin-bottom: 20px; }
.footer-col a { display: block; padding: 7px 0; font-size: .93rem; color: #9CA3AD; transition: color var(--t), padding-left var(--t); }
.footer-col a:hover { color: var(--accent); padding-left: 6px; }
.footer-contact p { font-size: .92rem; margin: 0 0 12px; }
.footer-contact .accent { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding: 26px 0; font-size: .82rem; }
.footer-bottom a:hover { color: var(--accent); }
.footer-legal { display: flex; gap: 22px; }

/* ============================================================
   BUILDERS' HARDWARE — overview, series & catalogue components
   ============================================================ */

/* Application-type tiles (door closer / sliding / hinge / other) */
.appl-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 44px; }
.appl { background: #fff; padding: 30px 24px; text-align: center; transition: background var(--t); }
.appl:hover { background: var(--bg-soft); }
.appl__icon { width: 62px; height: 62px; margin: 0 auto 18px; display: grid; place-items: center; background: var(--bg-soft); color: var(--accent); }
.appl__icon svg { width: 32px; height: 32px; }
.appl h4 { font-size: 16px; text-transform: uppercase; letter-spacing: .6px; margin-bottom: 6px; }
.appl p { font-size: .86rem; color: var(--steel-mid); margin: 0; }

/* Series cards with catalogue download */
.series-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 44px; }
.series {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  padding: 28px 26px; transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.series:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: transparent; }

/* Product thumbnail — full-bleed at the top of the card */
.series__thumb {
  margin: -28px -26px 22px; background: #fff; border-bottom: 1px solid var(--line);
  aspect-ratio: 4 / 3; overflow: hidden; display: block;
}
.series__thumb img { width: 100%; height: 100%; object-fit: contain; padding: 14px; transition: transform .5s ease; }
.series:hover .series__thumb img { transform: scale(1.06); }
.series__tag { font-family: var(--font-head); font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase; color: var(--accent); }
.series h4 { font-size: 21px; text-transform: uppercase; margin: 8px 0 10px; }
.series p { font-size: .92rem; color: var(--steel-mid); margin: 0 0 20px; }
.series .dl { margin-top: auto; }

/* PDF download link */
.dl {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1.2px;
  font-size: 12.5px; font-weight: 500; color: var(--ink);
  padding: 11px 16px; border: 1px solid var(--line); background: var(--bg-soft);
  transition: background var(--t), color var(--t), border-color var(--t);
}
.dl:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.dl svg { width: 15px; height: 15px; flex: none; }
.dl .sz { color: var(--steel-soft); letter-spacing: .5px; font-size: 11px; }
.dl:hover .sz { color: rgba(255,255,255,.85); }

/* Function-of-door-closer explainer cards */
.func-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; margin-top: 44px; }
.func { background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--accent); padding: 28px 26px; }
.section--dark .func { background: var(--steel); border-color: var(--line-dark); border-left-color: var(--accent); }
.func h4 { font-size: 18px; text-transform: uppercase; margin-bottom: 10px; }
.section--dark .func h4 { color: #fff; }
.func p { font-size: .93rem; color: var(--steel-mid); margin: 0; }
.section--dark .func p { color: #A7AEB8; }

/* Category rows with catalogue download */
.cat-rows { border-top: 1px solid var(--line); margin-top: 44px; }
.cat-row {
  display: grid; grid-template-columns: 116px 1fr auto; gap: 24px; align-items: center;
  padding: 22px 6px; border-bottom: 1px solid var(--line); transition: background var(--t), padding var(--t);
}
.cat-row:hover { background: var(--bg-soft); padding-inline: 16px; }
.cat-row__ico { width: 54px; height: 54px; display: grid; place-items: center; background: var(--bg-soft); color: var(--accent); }
.cat-row:hover .cat-row__ico { background: #fff; }
.cat-row__ico svg { width: 26px; height: 26px; }
/* Product thumbnail in category rows */
.cat-row__thumb { width: 116px; height: 82px; background: #fff; border: 1px solid var(--line); overflow: hidden; }
.cat-row__thumb img { width: 100%; height: 100%; object-fit: contain; padding: 7px; transition: transform .5s ease; }
.cat-row:hover .cat-row__thumb img { transform: scale(1.06); }
.cat-row h4 { font-size: 18px; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 4px; }
.cat-row p { font-size: .9rem; color: var(--steel-mid); margin: 0; }

/* Certified document list */
.doc-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--line-dark); border: 1px solid var(--line-dark); margin-top: 40px; }
.doc-item {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  background: var(--ink); padding: 20px 24px; transition: background var(--t);
}
.doc-item:hover { background: var(--steel); }
.doc-item__name { font-size: .95rem; color: #D6DAE0; }
.doc-item:hover .doc-item__name { color: #fff; }
.doc-item__pdf { display: inline-flex; align-items: center; gap: 8px; flex: none; font-family: var(--font-head); text-transform: uppercase; letter-spacing: 1.2px; font-size: 11.5px; color: var(--accent); }
.doc-item__pdf svg { width: 14px; height: 14px; }

/* Full-catalogue banner */
.cat-banner {
  display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap;
  background: var(--bg-soft); border: 1px solid var(--line); border-left: 4px solid var(--accent);
  padding: 30px 32px; margin-top: 44px;
}
.cat-banner h4 { font-size: 21px; text-transform: uppercase; margin-bottom: 6px; }
.cat-banner p { margin: 0; color: var(--steel-mid); font-size: .93rem; }

@media (max-width: 1024px) {
  .appl-grid { grid-template-columns: repeat(2,1fr); }
  .series-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 760px) {
  .appl-grid, .series-grid, .func-grid, .doc-list { grid-template-columns: 1fr; }
  .cat-row { grid-template-columns: 92px 1fr; row-gap: 14px; }
  .cat-row .dl { grid-column: 1 / -1; justify-self: start; }
  .cat-row__ico { width: 44px; height: 44px; }
  .cat-row__thumb { width: 92px; height: 66px; }
}

/* ============================================================
   Scroll reveal
   ============================================================ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .hero__slide { transition: opacity .4s ease; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 34px; }
  .grid--4 { grid-template-columns: repeat(2,1fr); }
  .stats { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(340px, 84vw);
    background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    padding: calc(var(--header-h) + 10px) 0 40px; transform: translateX(100%);
    transition: transform var(--t); box-shadow: var(--shadow-md); overflow-y: auto;
  }
  body.nav-open .nav { transform: translateX(0); }
  .site-header.transparent:not(.scrolled) .nav > li > a { color: var(--ink); }
  .nav > li { border-bottom: 1px solid var(--line); }
  .nav > li > a { padding: 18px 26px; font-size: 16px; justify-content: space-between; }
  .has-sub .submenu {
    position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none;
    border-top: 0; padding: 0 0 8px; display: none; background: var(--bg-soft);
  }
  .has-sub.open .submenu { display: block; }
  .nav-scrim { position: fixed; inset: 0; background: rgba(16,18,22,.5); opacity: 0; visibility: hidden; transition: opacity var(--t); z-index: 99; }
  body.nav-open .nav-scrim { opacity: 1; visibility: visible; }

  .grid--3 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .news-row { grid-template-columns: 110px 1fr; row-gap: 6px; }
  .news-row .news-tag { grid-column: 1; }
  .news-row .news-title { grid-column: 1 / -1; }
  .news-row .arrow { display: none; }
  .cta-band__deco { display: none; }
}
@media (max-width: 620px) {
  .grid--2, .grid--4, .prod-list { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .form .row2 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .timeline::before { left: 6px; }
  .tl-item { grid-template-columns: 1fr; gap: 6px; padding-left: 30px; }
  .tl-year { text-align: left; }
  .tl-item::before { left: 1px; }
  .hero__meta { display: none; }
}