/* ==========================================================================
   İMPARSTAR AMBALAJ — Design System
   Premium industrial / material-science brand system.
   Monochrome palette derived from the İMPARSTAR AMBALAJ star wordmark:
   ink (near-black charcoal) + white, on warm paper neutrals.
   ========================================================================== */

/* -------------------- Fonts -------------------- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

/* -------------------- Design tokens -------------------- */
:root{
  /* Brand */
  --ink:            #14161c;
  --ink-2:          #1e212b;
  --ink-3:          #2a2e3a;
  --orange:         #14161c;
  --orange-dark:    #000000;
  --orange-light:   #e7e6e2;
  --orange-mist:    #f1f0ec;

  /* Neutrals */
  --paper:          #faf9f6;
  --paper-2:        #f3f1ea;
  --paper-3:        #ece9df;
  --line:           #e2ded3;
  --line-strong:    #cfc9ba;
  --white:          #ffffff;

  --gray-900:       #171922;
  --gray-800:       #23262f;
  --gray-700:       #40434e;
  --gray-600:       #5a5e69;
  --gray-500:       #767a84;
  --gray-400:       #979ba5;
  --gray-300:       #c2c4cb;
  --gray-200:       #dfe0e4;

  /* Type */
  --font-head: 'Space Grotesk', 'Inter', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Rhythm */
  --container: 1280px;
  --container-wide: 1440px;
  --gutter: clamp(20px, 4vw, 64px);
  --section-y: clamp(64px, 9vw, 128px);
  --section-y-sm: clamp(40px, 6vw, 72px);
  --radius-sm: 3px;
  --radius-md: 6px;
  --radius-lg: 14px;

  /* Motion */
  --ease: cubic-bezier(.22,.61,.36,1);
  --dur-fast: .22s;
  --dur-mid: .45s;
  --dur-slow: .8s;

  /* Shadow (used sparingly) */
  --shadow-sm: 0 1px 2px rgba(20,22,28,.06), 0 1px 1px rgba(20,22,28,.04);
  --shadow-md: 0 12px 32px -12px rgba(20,22,28,.18);
  --shadow-lg: 0 24px 64px -20px rgba(20,22,28,.28);
}

/* -------------------- Reset -------------------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: 96px; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd{ margin: 0; }
ul[class], ol[class]{ list-style: none; margin: 0; padding: 0; }
img, picture, video{ max-width: 100%; display: block; }
input, button, textarea, select{ font: inherit; color: inherit; }
button{ background: none; border: 0; cursor: pointer; }
a{ color: inherit; text-decoration: none; }
table{ border-collapse: collapse; width: 100%; }

body{
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection{ background: var(--orange); color: var(--white); }

/* Safety default so any inline icon svg without an explicit size rule
   never falls back to the browser's ~300x150 intrinsic box. */
svg{ width: 1em; height: 1em; flex-shrink: 0; }

/* -------------------- Typography -------------------- */
h1, h2, h3, h4, .h1, .h2, .h3, .h4{
  font-family: var(--font-head);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.12;
  letter-spacing: -0.01em;
}
h1, .h1{ font-size: clamp(2.4rem, 4.2vw, 4.4rem); letter-spacing: -0.02em; }
h2, .h2{ font-size: clamp(1.9rem, 3vw, 3rem); }
h3, .h3{ font-size: clamp(1.35rem, 1.8vw, 1.85rem); }
h4, .h4{ font-size: clamp(1.08rem, 1.2vw, 1.3rem); }

p{ color: var(--gray-700); }
.lead{ font-size: clamp(1.05rem, 1.3vw, 1.28rem); color: var(--gray-700); line-height: 1.65; }

.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange-dark);
}
.eyebrow::before{
  content: '';
  width: 22px; height: 2px;
  background: var(--orange);
  display: inline-block;
}
.eyebrow.on-dark{ color: var(--white); }
.eyebrow.on-dark::before{ background: var(--white); }

.text-muted{ color: var(--gray-500); }
.text-white{ color: var(--white); }
.text-white .lead, p.text-white{ color: rgba(255,255,255,.78); }

/* -------------------- Layout -------------------- */
.container{ width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.container-wide{ width: 100%; max-width: var(--container-wide); margin-inline: auto; padding-inline: var(--gutter); }
.container-full{ width: 100%; padding-inline: var(--gutter); }

section{ position: relative; }
.section{ padding-block: var(--section-y); }
.section-sm{ padding-block: var(--section-y-sm); }
.section-tight-top{ padding-top: clamp(32px,4vw,56px); }

.section-head{ max-width: 720px; margin-bottom: clamp(32px, 5vw, 60px); }
.section-head.center{ margin-inline: auto; text-align: center; }
.section-head h2{ margin-top: 14px; }
.section-head .lead{ margin-top: 16px; }

.grid{ display: grid; gap: var(--gutter); }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }

.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 6vw, 96px);
  align-items: center;
}
.split.reverse .split-media{ order: 2; }
.split.reverse .split-content{ order: 1; }

.on-dark{ color: var(--white); }
.bg-ink{ background: var(--ink); }
.bg-ink-2{ background: linear-gradient(160deg, var(--ink) 0%, var(--ink-2) 100%); }
.bg-paper-2{ background: var(--paper-2); }
.bg-orange{ background: var(--orange); }

/* -------------------- Buttons -------------------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn svg{ width: 16px; height: 16px; transition: transform var(--dur-fast) var(--ease); flex-shrink: 0; }
.btn:hover svg{ transform: translateX(4px); }

.btn-primary{ background: var(--orange); color: var(--white); }
.btn-primary:hover{ background: var(--orange-dark); }

.btn-dark{ background: var(--ink); color: var(--white); }
.btn-dark:hover{ background: var(--ink-2); }

.btn-outline{ background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-outline:hover{ background: var(--ink); color: var(--white); }

.btn-outline-light{ background: transparent; color: var(--white); border-color: rgba(255,255,255,.5); }
.btn-outline-light:hover{ background: var(--white); color: var(--ink); border-color: var(--white); }

.btn-block{ width: 100%; }
.btn-sm{ padding: 11px 20px; font-size: .85rem; }

.link-arrow{
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: .92rem; color: var(--ink);
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line-strong);
  transition: all var(--dur-fast) var(--ease);
}
.link-arrow svg{ width: 15px; height: 15px; transition: transform var(--dur-fast) var(--ease); }
.link-arrow:hover{ color: var(--orange-dark); border-color: var(--orange); }
.link-arrow:hover svg{ transform: translateX(4px); }
.link-arrow.on-dark{ color: var(--white); border-color: rgba(255,255,255,.35); }
.link-arrow.on-dark:hover{ color: var(--white); border-color: var(--white); }

/* -------------------- Header -------------------- */
.site-header{
  position: fixed; inset: 0 0 auto 0; z-index: 900;
  padding-block: 22px;
  transition: background var(--dur-mid) var(--ease), padding var(--dur-mid) var(--ease), box-shadow var(--dur-mid) var(--ease), border-color var(--dur-mid) var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header .header-inner{
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.site-header.is-scrolled{
  background: rgba(250,249,246,.92);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  padding-block: 13px;
  box-shadow: 0 1px 0 rgba(20,22,28,.06), 0 12px 24px -18px rgba(20,22,28,.25);
  border-bottom-color: var(--line);
}
.site-header.is-scrolled .brand-word,
.site-header.is-scrolled .nav-link,
.site-header.is-scrolled .nav-icon{ color: var(--ink); }
.site-header.is-scrolled .brand-word span,
body.no-hero .site-header .brand-word span{ color: var(--ink); }
.site-header.is-scrolled .nav-item:hover .nav-link,
body.no-hero .nav-item:hover .nav-link{ color: var(--gray-600); }
body.no-hero .site-header{ background: rgba(250,249,246,.96); border-bottom-color: var(--line); }
body.no-hero .site-header .brand-word,
body.no-hero .site-header .nav-link{ color: var(--ink); }

.brand{ display: flex; align-items: center; gap: 11px; z-index: 2; }
.brand-mark{ width: 38px; height: 38px; flex-shrink: 0; position: relative; }
.brand-icon{ width: 38px; height: 38px; object-fit: contain; }
.brand-icon--dark{ display: none; }
.site-header.is-scrolled .brand-icon--light, body.no-hero .brand-icon--light{ display: none; }
.site-header.is-scrolled .brand-icon--dark, body.no-hero .brand-icon--dark{ display: block; }
.footer-brand .brand-icon--dark, .mobile-nav .brand-icon--dark{ display: none !important; }
.footer-brand .brand-icon--light, .mobile-nav .brand-icon--light{ display: block !important; }
.brand-word{ font-family: var(--font-head); font-weight: 700; font-size: 1.18rem; letter-spacing: -0.01em; color: var(--white); line-height: 1.1; transition: color var(--dur-fast) var(--ease); }
.brand-word span{ color: var(--white); display: block; font-family: var(--font-body); font-weight: 700; font-size: .58rem; letter-spacing: .3em; margin-top: 3px; }

.main-nav{ display: flex; align-items: center; gap: 6px; }
.nav-item{ position: relative; }
.nav-link{
  display: flex; align-items: center; gap: 6px;
  padding: 12px 15px;
  font-size: .9rem; font-weight: 600; color: var(--white);
  transition: color var(--dur-fast) var(--ease);
}
.nav-link svg{ width: 11px; height: 11px; opacity: .7; transition: transform var(--dur-fast) var(--ease); }
.nav-item:hover .nav-link{ color: rgba(255,255,255,.65); }
.nav-item:hover .nav-link svg{ transform: rotate(180deg); }
.nav-item.has-cta .nav-link{ padding-right: 0; }

.header-actions{ display: flex; align-items: center; gap: 18px; }
.lang-switch{ display: flex; align-items: center; gap: 6px; font-size: .8rem; font-weight: 700; color: var(--white); }
.lang-switch button{ opacity: .55; transition: opacity var(--dur-fast); color: inherit; }
.lang-switch button.active{ opacity: 1; }
.site-header.is-scrolled .lang-switch, body.no-hero .lang-switch{ color: var(--ink); }

.nav-icon{ color: var(--white); transition: color var(--dur-fast) var(--ease); }

.hamburger{ display: none; width: 30px; height: 22px; position: relative; z-index: 2; }
.hamburger span{ position: absolute; left: 0; width: 100%; height: 2px; background: currentColor; border-radius: 2px; transition: all var(--dur-fast) var(--ease); }
.hamburger span:nth-child(1){ top: 0; }
.hamburger span:nth-child(2){ top: 10px; }
.hamburger span:nth-child(3){ top: 20px; }
.site-header.is-scrolled .hamburger, body.no-hero .hamburger{ color: var(--ink); }
.hamburger{ color: var(--white); }

/* Mega menu */
.mega{
  position: absolute; top: 100%; left: 50%; transform: translate(-50%,10px);
  width: min(92vw, 980px);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 34px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease), visibility var(--dur-fast);
  border: 1px solid var(--line);
}
.nav-item:hover .mega{ opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%,0); }
.mega.mega-narrow{ width: min(92vw, 640px); }
.mega.mega-wide{ width: min(92vw, 820px); left: 0; transform: translate(-18%,10px); }
.nav-item:hover .mega.mega-wide{ transform: translate(-18%,0); }
.mega-cols{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.mega-cols-4{ grid-template-columns: repeat(4, 1fr); gap: 24px; }
.mega-cols-4 .mega-link{ font-size: .88rem; padding: 7px 0; }
.mega-col-title{ font-size: .72rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--orange-dark); margin-bottom: 14px; display: block; }
.mega-link{ display: flex; align-items: baseline; gap: 8px; padding: 8px 0; font-size: .93rem; font-weight: 600; color: var(--ink); border-bottom: 1px solid transparent; }
.mega-link small{ font-weight: 500; color: var(--gray-400); font-size: .74rem; }
.mega-link:hover{ color: var(--orange-dark); }
.mega-link:hover small{ color: var(--orange); }
.mega-simple .mega-link{ padding: 10px 0; font-size: .95rem; border-bottom: 1px dashed var(--line); }
.mega-foot{ margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.mega-foot p{ font-size: .84rem; color: var(--gray-500); margin: 0; max-width: 380px; }

.mega-product{
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper-2);
  grid-column: span 1;
}
.mega-product-figure{ height: 108px; overflow: hidden; }
.mega-product-figure img{ width: 100%; height: 100%; object-fit: cover; }
.mega-product-body{ padding: 14px 16px 16px; }
.mega-product-body .cat{ font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--orange-dark); }
.mega-product-body h5{ font-family: var(--font-head); font-size: 1rem; margin: 4px 0 4px; }
.mega-product-body p{ font-size: .8rem; color: var(--gray-500); margin: 0; }

/* CTA button in nav */
.nav-cta{ margin-left: 6px; }

/* -------------------- Hero -------------------- */
.hero{
  position: relative;
  min-height: 100vh;
  display: flex; align-items: flex-end;
  color: var(--white);
  overflow: hidden;
  background: var(--ink);
}
.hero-media{ position: absolute; inset: 0; z-index: 0; }
.hero-media video, .hero-media img{ width: 100%; height: 100%; object-fit: cover; }
.hero-media::after{
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,16,20,.55) 0%, rgba(15,16,20,.35) 38%, rgba(15,16,20,.82) 100%);
}
.hero-inner{ position: relative; z-index: 1; width: 100%; padding-bottom: clamp(56px, 7vw, 96px); padding-top: 180px; }
.hero-tag{ display: flex; align-items: center; gap: 10px; font-size: .78rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--white); margin-bottom: 22px; }
.hero-tag::before{ content: ''; width: 26px; height: 2px; background: var(--white); }
.hero h1{ color: var(--white); max-width: 15ch; }
.hero .lead{ color: rgba(255,255,255,.82); max-width: 46ch; margin-top: 22px; }
.hero-actions{ display: flex; gap: 16px; flex-wrap: wrap; margin-top: 38px; }
.hero-meta{
  margin-top: 76px;
  display: flex; align-items: flex-end; justify-content: space-between;
  border-top: 1px solid rgba(255,255,255,.18);
  padding-top: 22px;
  flex-wrap: wrap; gap: 20px;
}
.hero-scroll{ display: flex; align-items: center; gap: 10px; font-size: .78rem; color: rgba(255,255,255,.65); font-weight: 600; letter-spacing: .04em; }
.hero-scroll .dot{ width: 7px; height: 7px; border-radius: 50%; background: var(--white); animation: pulse 1.8s infinite; }
.hero-tickers{ display: flex; gap: 32px; flex-wrap: wrap; }
.hero-tickers div{ font-size: .78rem; color: rgba(255,255,255,.55); font-weight: 600; }
.hero-tickers strong{ display: block; color: var(--white); font-family: var(--font-head); font-size: 1.05rem; font-weight: 600; }

@keyframes pulse{ 0%,100%{ opacity:1; transform: scale(1);} 50%{ opacity:.4; transform: scale(1.5);} }

/* Page (non-home) hero: shorter */
.page-hero{
  position: relative; color: var(--white); background: var(--ink);
  padding-top: 168px; padding-bottom: 72px; overflow: hidden;
}
.page-hero .hero-media{ opacity: .55; }
.page-hero .hero-media::after{ background: linear-gradient(180deg, rgba(15,16,20,.55) 0%, rgba(15,16,20,.88) 100%); }
.breadcrumb{ position: relative; z-index: 1; display: flex; align-items: center; gap: 8px; font-size: .78rem; font-weight: 600; color: rgba(255,255,255,.55); margin-bottom: 22px; flex-wrap: wrap; }
.breadcrumb a{ color: rgba(255,255,255,.55); }
.breadcrumb a:hover{ color: var(--white); }
.breadcrumb .sep{ opacity: .4; }
.breadcrumb .current{ color: var(--white); }
.page-hero .eyebrow{ position: relative; z-index: 1; }
.page-hero h1{ position: relative; z-index: 1; color: var(--white); max-width: 22ch; margin-top: 14px; }
.page-hero .lead{ position: relative; z-index: 1; color: rgba(255,255,255,.78); max-width: 60ch; margin-top: 18px; }
.page-hero.on-paper{ color: var(--ink); background: var(--paper-2); padding-bottom: 56px; }
.page-hero.on-paper .breadcrumb, .page-hero.on-paper .breadcrumb a{ color: var(--gray-500); }
.page-hero.on-paper .breadcrumb a:hover{ color: var(--ink); }
.page-hero.on-paper .breadcrumb .current{ color: var(--ink); }
.page-hero.on-paper h1{ color: var(--ink); }
.page-hero.on-paper .lead{ color: var(--gray-600); }

/* -------------------- Buttons row / CTA banner -------------------- */
.cta-banner{
  background: var(--ink);
  border-radius: var(--radius-lg);
  padding: clamp(40px, 6vw, 76px);
  display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap;
  position: relative; overflow: hidden;
}
.cta-banner::before{
  content: '';
  position: absolute; right: -10%; top: -40%;
  width: 480px; height: 480px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.08), transparent 70%);
}
.cta-banner-content{ position: relative; max-width: 560px; }
.cta-banner-content .eyebrow{ color: var(--white); }
.cta-banner-content .eyebrow::before{ background: var(--white); }
.cta-banner-content h2{ color: var(--white); margin-top: 14px; }
.cta-banner-content p{ color: rgba(255,255,255,.72); margin-top: 14px; }
.cta-banner-actions{ position: relative; display: flex; gap: 14px; flex-wrap: wrap; }

/* -------------------- Cards -------------------- */
.card{ background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md); }

.product-grid{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-card{
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  transition: box-shadow var(--dur-mid) var(--ease), border-color var(--dur-mid) var(--ease), transform var(--dur-mid) var(--ease);
}
.product-card:hover{ box-shadow: var(--shadow-md); border-color: var(--line); transform: translateY(-4px); }
.product-card-figure{ position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--paper-2); }
.product-card-figure img{ width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-slow) var(--ease); }
.product-card:hover .product-card-figure img{ transform: scale(1.07); }
.product-card-code{ position: absolute; top: 14px; left: 14px; background: rgba(20,22,28,.78); color: var(--white); font-size: .68rem; font-weight: 700; letter-spacing: .08em; padding: 5px 10px; border-radius: 3px; backdrop-filter: blur(4px); }
.product-card-body{ padding: 20px; }
.product-card-body .cat{ font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--orange-dark); }
.product-card-body h3{ font-size: 1.15rem; margin: 8px 0 8px; }
.product-card-body p{ font-size: .87rem; color: var(--gray-500); margin-bottom: 16px; }
.product-card-foot{ display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--line); }
.product-card-foot .link-arrow{ border: 0; padding: 0; font-size: .82rem; }

/* Value cards (Neden İmparstar) */
.value-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; }
.value-item{ background: var(--white); padding: 36px 32px; transition: background var(--dur-fast) var(--ease); }
.value-item:hover{ background: var(--paper-2); }
.value-num{ font-family: var(--font-head); font-size: .85rem; font-weight: 700; color: var(--orange); letter-spacing: .05em; }
.value-item h3{ margin-top: 16px; font-size: 1.15rem; }
.value-item p{ margin-top: 10px; font-size: .9rem; }

/* News cards */
.news-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card{ display: flex; flex-direction: column; }
.news-figure{ aspect-ratio: 16/10; overflow: hidden; border-radius: var(--radius-md); }
.news-figure img{ width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-slow) var(--ease); }
.news-card:hover .news-figure img{ transform: scale(1.06); }
.news-meta{ display: flex; gap: 12px; align-items: center; margin-top: 18px; font-size: .76rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--orange-dark); }
.news-meta .date{ color: var(--gray-400); font-weight: 600; text-transform: none; letter-spacing: 0; }
.news-card h3{ font-size: 1.15rem; margin-top: 10px; }
.news-card p{ font-size: .88rem; margin-top: 8px; }
.news-card .link-arrow{ margin-top: 16px; }

/* Sector interactive */
.sector-panel{ display: grid; grid-template-columns: 300px 1fr; border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius-lg); overflow: hidden; min-height: 480px; }
.sector-list{ background: rgba(255,255,255,.04); border-right: 1px solid rgba(255,255,255,.1); }
.sector-list button{
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  width: 100%; text-align: left; padding: 18px 24px;
  font-family: var(--font-head); font-size: 1rem; font-weight: 600; color: rgba(255,255,255,.55);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: all var(--dur-fast) var(--ease);
}
.sector-list button .n{ font-family: var(--font-body); font-size: .72rem; color: rgba(255,255,255,.3); font-weight: 700; }
.sector-list button:hover{ color: var(--white); background: rgba(255,255,255,.04); }
.sector-list button.active{ color: var(--white); background: rgba(255,255,255,.1); border-left: 3px solid var(--white); padding-left: 21px; }
.sector-list button.active .n{ color: var(--white); }
.sector-display{ position: relative; overflow: hidden; }
.sector-display-img{ position: absolute; inset: 0; }
.sector-display-img img{ width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .6s var(--ease); }
.sector-display-img img.active{ opacity: 1; }
.sector-display-img::after{ content:''; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(15,16,20,.92) 0%, rgba(15,16,20,.25) 55%, rgba(15,16,20,.1) 100%); }
.sector-display-body{ position: relative; z-index: 1; padding: 40px; display: flex; flex-direction: column; justify-content: flex-end; min-height: 480px; }
.sector-display-body .cat{ color: var(--white); font-size: .76rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.sector-display-body h3{ color: var(--white); font-size: 1.7rem; margin-top: 10px; }
.sector-display-body p{ color: rgba(255,255,255,.75); margin-top: 12px; max-width: 46ch; font-size: .92rem; }
.sector-display-body .link-arrow{ margin-top: 20px; align-self: flex-start; }

/* Material science comparison bars */
.matrix{ display: flex; flex-direction: column; gap: 26px; }
.matrix-row{ display: grid; grid-template-columns: 200px 1fr; gap: 24px; align-items: center; }
.matrix-row .label{ font-family: var(--font-head); font-weight: 600; font-size: .95rem; }
.matrix-row .label small{ display: block; font-family: var(--font-body); font-weight: 500; font-size: .76rem; color: var(--gray-400); margin-top: 2px; }
.matrix-track{ height: 8px; background: var(--paper-3); border-radius: 4px; overflow: hidden; position: relative; }
.matrix-fill{ height: 100%; background: linear-gradient(90deg, var(--orange), var(--orange-dark)); border-radius: 4px; width: 0; transition: width 1.1s var(--ease); }

/* Stats strip */
.stats-strip{ display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stats-strip .stat{ padding: 30px 28px; border-right: 1px solid var(--line); }
.stats-strip .stat:last-child{ border-right: 0; }
.stats-strip .stat h3{ font-size: 1rem; color: var(--ink); }
.stats-strip .stat p{ font-size: .85rem; margin-top: 6px; }

/* -------------------- Media blocks -------------------- */
.media-full{ position: relative; aspect-ratio: 16/8; border-radius: var(--radius-lg); overflow: hidden; }
.media-full img, .media-full video{ width: 100%; height: 100%; object-fit: cover; }
.media-caption{ position: absolute; left: 28px; bottom: 24px; z-index: 1; color: var(--white); font-size: .82rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.media-caption::before{ content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--white); }
.media-full::after{ content: ''; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(15,16,20,.55), transparent 40%); }

.video-block{ position: relative; border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 16/9; background: var(--ink); }
.video-block video, .video-block img.poster{ position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.video-block .play-badge{
  position: absolute; left: 28px; bottom: 28px; z-index: 2;
  display: flex; align-items: center; gap: 12px;
  background: rgba(20,22,28,.55); backdrop-filter: blur(6px);
  padding: 10px 18px 10px 10px; border-radius: 40px; color: var(--white); font-size: .82rem; font-weight: 600;
}
.play-dot{ width: 34px; height: 34px; border-radius: 50%; background: var(--white); color: var(--ink); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.play-dot svg{ width: 12px; height: 12px; }

/* -------------------- Split blocks / editorial -------------------- */
.split-media{ position: relative; border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4/5; }
.split-media img{ width: 100%; height: 100%; object-fit: cover; }
.split-media .tag-chip{ position: absolute; left: 20px; top: 20px; background: rgba(250,249,246,.92); backdrop-filter: blur(6px); padding: 8px 14px; border-radius: 40px; font-size: .74rem; font-weight: 700; letter-spacing: .04em; }
.checklist{ margin-top: 26px; display: flex; flex-direction: column; gap: 14px; }
.checklist li{ display: flex; align-items: flex-start; gap: 12px; font-size: .95rem; color: var(--gray-700); }
.checklist svg{ width: 18px; height: 18px; color: var(--orange); flex-shrink: 0; margin-top: 2px; }
.on-dark.split-content .checklist li, .split-content.on-dark .checklist li{ color: rgba(255,255,255,.78); }

/* -------------------- FAQ / Accordion -------------------- */
.accordion-item{ border-bottom: 1px solid var(--line); }
.accordion-trigger{ width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 4px; text-align: left; font-family: var(--font-head); font-weight: 600; font-size: 1.02rem; }
.accordion-trigger .plus{ position: relative; width: 20px; height: 20px; flex-shrink: 0; }
.accordion-trigger .plus::before, .accordion-trigger .plus::after{ content:''; position: absolute; background: var(--ink); transition: transform var(--dur-fast) var(--ease); }
.accordion-trigger .plus::before{ left: 0; top: 50%; width: 100%; height: 2px; transform: translateY(-50%); }
.accordion-trigger .plus::after{ top: 0; left: 50%; width: 2px; height: 100%; transform: translateX(-50%); }
.accordion-item.open .accordion-trigger .plus::after{ transform: translateX(-50%) rotate(90deg); opacity: 0; }
.accordion-item.open .accordion-trigger{ color: var(--orange-dark); }
.accordion-panel{ max-height: 0; overflow: hidden; transition: max-height var(--dur-mid) var(--ease); }
.accordion-panel-inner{ padding: 0 4px 24px; }
.accordion-panel-inner p{ font-size: .93rem; }

/* Tabs */
.tabs-bar{ display: flex; gap: 6px; flex-wrap: wrap; border-bottom: 1px solid var(--line); margin-bottom: 32px; }
.tab-btn{ padding: 13px 20px; font-size: .88rem; font-weight: 700; color: var(--gray-500); border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all var(--dur-fast) var(--ease); }
.tab-btn:hover{ color: var(--ink); }
.tab-btn.active{ color: var(--orange-dark); border-color: var(--orange); }
.tab-panel{ display: none; }
.tab-panel.active{ display: block; }

/* -------------------- Tables (technical) -------------------- */
.tech-table{ width: 100%; font-size: .89rem; }
.tech-table th, .tech-table td{ padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); }
.tech-table thead th{ font-family: var(--font-head); font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--gray-500); font-weight: 700; background: var(--paper-2); }
.tech-table tbody tr:hover{ background: var(--paper-2); }
.tech-table td.value{ font-weight: 700; color: var(--ink); font-family: var(--font-head); }
.tech-table-wrap{ border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; overflow-x: auto; background: var(--white); }

.badge{ display: inline-flex; align-items: center; gap: 6px; font-size: .74rem; font-weight: 700; padding: 5px 11px; border-radius: 30px; background: var(--orange-mist); color: var(--orange-dark); }
.badge.on-dark{ background: rgba(255,255,255,.14); color: var(--white); }
.pill-row{ display: flex; flex-wrap: wrap; gap: 8px; }

/* -------------------- Forms -------------------- */
.form-grid{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.field{ display: flex; flex-direction: column; gap: 8px; }
.field.full{ grid-column: 1 / -1; }
.field label{ font-size: .82rem; font-weight: 700; color: var(--ink); }
.field label .opt{ color: var(--gray-400); font-weight: 500; }
.field input, .field select, .field textarea{
  padding: 14px 16px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--white); font-size: .93rem; color: var(--ink);
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus{ outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(20,22,28,.12); }
.field textarea{ resize: vertical; min-height: 120px; }
.file-drop{
  border: 1.5px dashed var(--line-strong); border-radius: var(--radius-md);
  padding: 28px; text-align: center; font-size: .86rem; color: var(--gray-500);
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.file-drop:hover{ border-color: var(--orange); background: var(--orange-mist); }
.file-drop strong{ color: var(--ink); }
.check-row{ display: flex; align-items: flex-start; gap: 12px; }
.check-row input{ margin-top: 4px; width: 17px; height: 17px; accent-color: var(--orange); flex-shrink: 0; }
.check-row label{ font-size: .84rem; color: var(--gray-600); font-weight: 500; }
.check-row a{ color: var(--orange-dark); font-weight: 700; text-decoration: underline; }
.form-panel{ background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(28px, 4vw, 48px); }
.form-note{ font-size: .78rem; color: var(--gray-400); margin-top: 14px; }
.form-error{ display:none; font-size:.85rem; font-weight:600; color:#b3261e; background:#fbe9e7; border:1px solid #f3c8c2; border-radius:6px; padding:12px 16px; margin-bottom:18px; }
.form-error.show{ display:block; }
.hp-field{ position:absolute !important; left:-9999px !important; top:-9999px !important; width:1px !important; height:1px !important; opacity:0; pointer-events:none; }
.form-success{ display: none; text-align: center; padding: 60px 20px; }
.form-success.show{ display: block; }
.form-success .icon{ width: 60px; height: 60px; border-radius: 50%; background: var(--orange-mist); color: var(--orange); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
.form-success .icon svg{ width: 24px; height: 24px; }

/* -------------------- Contact info blocks -------------------- */
.info-list{ display: flex; flex-direction: column; gap: 22px; }
.info-item{ display: flex; gap: 16px; align-items: flex-start; }
.info-icon{ width: 44px; height: 44px; border-radius: 50%; background: var(--orange-mist); color: var(--orange-dark); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.info-icon svg{ width: 19px; height: 19px; }
.info-item h4{ font-size: .95rem; }
.info-item p, .info-item a{ font-size: .9rem; color: var(--gray-600); margin-top: 4px; }
.info-item a:hover{ color: var(--orange-dark); }
.map-frame{ border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); aspect-ratio: 16/11; filter: grayscale(.35) contrast(1.05); }
.map-frame iframe{ width: 100%; height: 100%; border: 0; }

/* -------------------- Footer -------------------- */
.site-footer{ background: var(--ink); color: rgba(255,255,255,.7); padding-top: clamp(56px, 7vw, 96px); }
.footer-top{ display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 56px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-brand{ display: flex; align-items: center; gap: 11px; margin-bottom: 20px; }
.footer-brand .brand-mark{ width: 36px; height: 36px; }
.footer-brand .brand-word{ color: var(--white); }
.footer-about p{ font-size: .88rem; color: rgba(255,255,255,.55); max-width: 340px; }
.footer-social{ display: flex; gap: 10px; margin-top: 24px; }
.footer-social a{ width: 38px; height: 38px; border-radius: 50%; border: 1px solid rgba(255,255,255,.18); display: flex; align-items: center; justify-content: center; transition: all var(--dur-fast) var(--ease); }
.footer-social a:hover{ background: var(--white); border-color: var(--white); color: var(--ink); }
.footer-social svg{ width: 16px; height: 16px; }
.footer-col h5{ font-family: var(--font-body); font-size: .74rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.4); margin-bottom: 18px; }
.footer-col ul{ display: flex; flex-direction: column; gap: 12px; }
.footer-col a{ font-size: .89rem; color: rgba(255,255,255,.72); transition: color var(--dur-fast) var(--ease); }
.footer-col a:hover{ color: var(--white); }
.footer-contact li{ display: flex; gap: 10px; align-items: flex-start; font-size: .87rem; color: rgba(255,255,255,.72); }
.footer-contact svg{ width: 16px; height: 16px; color: var(--white); flex-shrink: 0; margin-top: 3px; }
.footer-bottom{ display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 26px; flex-wrap: wrap; font-size: .8rem; color: rgba(255,255,255,.4); }
.footer-legal{ display: flex; gap: 20px; flex-wrap: wrap; }
.footer-legal a{ color: rgba(255,255,255,.5); }
.footer-legal a:hover{ color: var(--white); }
.footer-lang{ display: flex; gap: 10px; }

/* -------------------- Utilities -------------------- */
.mt-0{ margin-top: 0 !important; }
.mt-sm{ margin-top: 16px; }
.mt-md{ margin-top: 28px; }
.mt-lg{ margin-top: 48px; }
.center{ text-align: center; }
.flex{ display: flex; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.flex-gap{ display: flex; gap: 14px; flex-wrap: wrap; }
.divider{ height: 1px; background: var(--line); width: 100%; }
.divider.on-dark{ background: rgba(255,255,255,.12); }
.hide-mobile{ display: block; }
.show-mobile{ display: none; }

/* Scroll reveal */
[data-reveal]{ opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
[data-reveal].in-view{ opacity: 1; transform: translateY(0); }
[data-reveal="fade"]{ transform: none; }
[data-reveal-group] [data-reveal]{ transition-delay: calc(var(--i, 0) * 90ms); }

/* Numbered kicker used on process/steps sections */
.step-row{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--line); }
.step{ background: var(--white); padding: 30px 26px; position: relative; }
.step .step-no{ font-family: var(--font-head); font-size: 2.1rem; font-weight: 700; color: var(--paper-3); }
.step h4{ margin-top: 10px; }
.step p{ margin-top: 8px; font-size: .86rem; }

/* Quote / testimonial style band (used sparingly, not fabricated testimonials — used for mission statement callouts) */
.statement-band{ padding: clamp(56px,8vw,110px) 0; text-align: center; }
.statement-band blockquote{ font-family: var(--font-head); font-size: clamp(1.6rem, 3vw, 2.7rem); font-weight: 500; line-height: 1.35; max-width: 18ch; margin-inline: auto; letter-spacing: -0.01em; }
.statement-band blockquote .accent{ font-weight: 700; }

/* Logo mark svg color rules */
.mark-ink{ fill: var(--ink); }
.mark-orange{ fill: var(--orange); }
.brand-mark.on-white .mark-ink{ fill: var(--ink); }
.brand-mark .mark-ink{ fill: var(--white); }
.site-header.is-scrolled .brand-mark .mark-ink, body.no-hero .brand-mark .mark-ink{ fill: var(--ink); }
.site-footer .brand-mark .mark-ink{ fill: var(--white); }

/* 404 */
.error-page{ min-height: 70vh; display: flex; align-items: center; justify-content: center; text-align: center; padding-top: 140px; }
.error-code{ font-family: var(--font-head); font-size: clamp(5rem, 14vw, 10rem); font-weight: 700; color: var(--paper-3); line-height: 1; }

/* -------------------- Responsive -------------------- */
@media (max-width: 1100px){
  .main-nav, .header-actions .lang-switch, .nav-cta{ display: none; }
  .hamburger{ display: block; }
  .product-grid{ grid-template-columns: repeat(2, 1fr); }
  .value-grid{ grid-template-columns: repeat(2, 1fr); }
  .grid-4{ grid-template-columns: repeat(2, 1fr); }
  .footer-top{ grid-template-columns: 1fr 1fr; }
  .stats-strip{ grid-template-columns: repeat(2,1fr); }
  .stats-strip .stat:nth-child(2){ border-right: 0; }
  .step-row{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px){
  .split{ grid-template-columns: 1fr; }
  .split-media{ aspect-ratio: 16/10; }
  .split.reverse .split-media, .split.reverse .split-content{ order: unset; }
  .sector-panel{ grid-template-columns: 1fr; }
  .sector-list{ display: flex; overflow-x: auto; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .sector-list button{ white-space: nowrap; border-bottom: 0; border-right: 1px solid rgba(255,255,255,.08); }
  .sector-list button.active{ border-left: 0; border-bottom: 3px solid var(--white); padding-left: 24px; }
  .matrix-row{ grid-template-columns: 1fr; gap: 10px; }
  .news-grid{ grid-template-columns: 1fr; }
  .grid-3{ grid-template-columns: 1fr; }
  .form-grid{ grid-template-columns: 1fr; }
  .hide-mobile{ display: none; }
  .show-mobile{ display: block; }
}
@media (max-width: 640px){
  .product-grid, .grid-4, .grid-2{ grid-template-columns: 1fr; }
  .footer-top{ grid-template-columns: 1fr; gap: 36px; }
  .value-grid{ grid-template-columns: 1fr; }
  .step-row{ grid-template-columns: 1fr; }
  .cta-banner{ padding: 32px 24px; }
  .hero-inner{ padding-top: 150px; }
  .hero-meta{ flex-direction: column; align-items: flex-start; }
  html{ scroll-padding-top: 76px; }
}

/* Mobile nav drawer */
.mobile-nav{
  position: fixed; inset: 0; z-index: 950;
  background: var(--ink);
  transform: translateX(100%);
  transition: transform var(--dur-mid) var(--ease);
  overflow-y: auto;
  padding: 100px 28px 40px;
}
.mobile-nav.open{ transform: translateX(0); }
.mobile-nav-item{ border-bottom: 1px solid rgba(255,255,255,.1); }
.mobile-nav-trigger{ width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 18px 2px; font-family: var(--font-head); font-size: 1.15rem; font-weight: 600; color: var(--white); }
.mobile-nav-trigger svg{ width: 14px; height: 14px; transition: transform var(--dur-fast); color: rgba(255,255,255,.55); }
.mobile-nav-item.open .mobile-nav-trigger svg{ transform: rotate(180deg); }
.mobile-sub{ max-height: 0; overflow: hidden; transition: max-height var(--dur-mid) var(--ease); }
.mobile-sub-inner{ padding: 0 2px 20px; display: flex; flex-direction: column; gap: 4px; }
.mobile-sub-inner a{ padding: 10px 12px; font-size: .92rem; color: rgba(255,255,255,.65); border-radius: 4px; }
.mobile-sub-inner a:hover{ background: rgba(255,255,255,.06); color: var(--white); }
.mobile-sub-inner .cat-label{ font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.55); padding: 14px 12px 4px; }
.mobile-nav .btn{ width: 100%; margin-top: 20px; }
.mobile-nav-close{ position: absolute; top: 26px; right: 26px; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; color: var(--white); }
.mobile-nav-close svg{ width: 20px; height: 20px; }