/* ============================================================
   NORDVIK Design System — Metso-style industrial web design
   Colors verified against metso.com: #090909 black, #eb2814
   orange CTA, #00e2b0 mint hover, #deec29 lime accent.
   ============================================================ */

/* ---- Design Tokens ---- */
:root {
  --nk-black: #090909;
  --nk-white: #ffffff;
  --nk-orange: #eb2814;
  --nk-mint: #00e2b0;
  --nk-lime: #deec29;
  --nk-gray: #525961;
  --nk-gray-dark: #33373b;
  --nk-light: #f4f4f4;
  --nk-border: #d8dddd;

  --nk-font-display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --nk-font-body: "Barlow", "Helvetica Neue", Arial, sans-serif;

  --nk-s1: 4px; --nk-s2: 8px; --nk-s3: 12px; --nk-s4: 16px; --nk-s5: 24px;
  --nk-s6: 32px; --nk-s7: 40px; --nk-s8: 48px; --nk-s9: 64px; --nk-s10: 96px;

  --nk-t-display: 76px;
  --nk-t-h1: 48px;
  --nk-t-h2: 36px;
  --nk-t-h3: 24px;
  --nk-t-body: 17px;
  --nk-t-small: 14px;
  --nk-t-caption: 12px;
  --nk-lh: 1.55;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--nk-font-body);
  font-size: var(--nk-t-body);
  line-height: var(--nk-lh);
  color: var(--nk-black);
  background: var(--nk-white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }

/* ---- Typography (Metso: sentence-case display headings) ---- */
h1, h2, h3, h4, .display {
  font-family: var(--nk-font-display);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: 0;
}
h1 { font-size: var(--nk-t-h1); }
h2 { font-size: var(--nk-t-h2); }
h3 { font-size: var(--nk-t-h3); }
.display { font-size: var(--nk-t-display); }
.eyebrow {
  font-family: var(--nk-font-body);
  font-size: var(--nk-t-caption);
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--nk-gray);
  display: inline-block;
  margin-bottom: var(--nk-s3);
}
.lead { font-size: 19px; line-height: 1.6; }

/* ---- Layout ---- */
.container { max-width: 1240px; margin: 0 auto; padding: 0 var(--nk-s5); }
.section { padding: var(--nk-s10) 0; }
.section--dark { background: var(--nk-black); color: var(--nk-white); }
.section--light { background: var(--nk-light); }

.section-head { margin-bottom: var(--nk-s7); }
.section-head h2 { margin-bottom: var(--nk-s3); }
.section-head .lead { max-width: 720px; color: var(--nk-gray); }
.section--dark .section-head .lead { color: #c9c9c9; }
.section--dark h2, .section--dark h3 { color: var(--nk-white); }

/* ---- Buttons (Metso: square, orange, mint hover, lime active) ---- */
.btn {
  display: inline-block;
  border: none;
  border-radius: 0;
  background: var(--nk-orange);
  color: var(--nk-black);
  font-family: var(--nk-font-body);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 19px 28px 17px;
  text-align: center;
  transition: background 0.3s ease, color 0.3s ease;
}
.btn:hover { background: var(--nk-mint); color: var(--nk-black); }
.btn:active { background: var(--nk-lime); }
.btn:focus-visible { outline: 3px solid var(--nk-mint); outline-offset: 2px; }
.btn--black { background: var(--nk-black); color: var(--nk-white); }
.btn--black:hover { background: var(--nk-mint); color: var(--nk-black); }
.btn--line {
  background: transparent;
  border: 2px solid var(--nk-black);
  color: var(--nk-black);
  padding: 17px 26px 15px;
}
.btn--line:hover { background: var(--nk-mint); border-color: var(--nk-mint); }
.btn--line-light { border-color: var(--nk-white); color: var(--nk-white); }
.btn--line-light:hover { background: var(--nk-mint); border-color: var(--nk-mint); color: var(--nk-black); }

/* ---- Header (Metso: white bar, black nav, mint hover) ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nk-white);
  color: var(--nk-black);
  box-shadow: 0 1px 0 var(--nk-border);
}
.header-top {
  background: var(--nk-black);
  color: #c9c9c9;
  font-size: 13px;
}
.header-top-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--nk-s4);
  padding: 7px 0;
}
.header-top a:hover { color: var(--nk-mint); }
.header-top .contacts { display: flex; gap: var(--nk-s5); }

.header-main {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: var(--nk-s5);
}
.logo {
  display: inline-flex;
  align-items: center;
  font-family: var(--nk-font-display);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--nk-black);
  text-transform: uppercase;
  line-height: 1;
  padding: 14px 0;
}
.logo sup { font-size: 20px; font-weight: 600; color: var(--nk-orange); margin-left: 2px; line-height: 1; align-self: flex-start; margin-top: 0; }
.logo:hover { color: var(--nk-black); }

.nav { display: flex; align-items: stretch; gap: var(--nk-s2); }
.nav > a, .nav-parent {
  display: inline-flex;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 0 var(--nk-s4);
  color: var(--nk-black);
  transition: background 0.2s, color 0.2s;
}
.nav > a:hover, .nav-parent:hover { background: var(--nk-mint); color: var(--nk-black); }
.nav > a.is-active, .nav-parent.is-active { box-shadow: inset 0 -4px 0 var(--nk-orange); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--nk-black);
  font-size: 26px;
  line-height: 1;
}

/* ---- Products mega menu (full width, white, Metso-style) ---- */
.nav-dropdown { position: relative; display: flex; }
.nav-parent .caret { font-size: 10px; color: var(--nk-orange); margin-left: 6px; }
.mega-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding-top: 1px;
  z-index: 300;
}
.nav-dropdown:hover .mega-panel, .nav-dropdown:focus-within .mega-panel { display: block; }
.mega-inner {
  background: var(--nk-white);
  border-top: 3px solid var(--nk-orange);
  box-shadow: 0 24px 48px rgba(9, 9, 9, 0.18);
  display: grid;
  grid-template-columns: repeat(2, auto);
  justify-content: center;
  gap: var(--nk-s5) var(--nk-s9);
  padding: var(--nk-s6) var(--nk-s7);
  width: max-content;
  max-width: 96vw;
}
.mega-cat {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--nk-orange);
  font-weight: 700;
  margin-bottom: var(--nk-s2);
  white-space: nowrap;
}
.mega-links { display: grid; grid-template-columns: 1fr; }
.mega-links--2col { grid-template-columns: 1fr 1fr; gap: 0 var(--nk-s5); }
.mega-col a {
  display: block;
  color: var(--nk-black);
  font-size: 14.5px;
  font-weight: 500;
  padding: 6px 8px;
  margin: 0 -8px;
  white-space: nowrap;
  transition: background 0.15s;
}
.mega-col a:hover { background: var(--nk-mint); }

.lang-switch { display: flex; gap: var(--nk-s2); font-size: 13px; align-items: center; }
.lang-switch a { text-transform: uppercase; letter-spacing: 1px; padding: 6px 10px; border: 1px solid var(--nk-border); color: var(--nk-black); }
.lang-switch a.is-active { background: var(--nk-black); border-color: var(--nk-black); color: var(--nk-white); font-weight: 700; }
.lang-switch a:hover { border-color: var(--nk-black); }

/* ---- Hero ---- */
.hero { position: relative; overflow: hidden; background: var(--nk-black); color: var(--nk-white); }
.hero-slide { position: relative; }
.hero-slide img.hero-bg {
  width: 100%;
  height: clamp(360px, 50vh, 520px);
  object-fit: cover;
  opacity: 0.55;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(9,9,9,0.72) 0%, rgba(9,9,9,0.25) 60%, rgba(9,9,9,0.05) 100%);
}
.hero-content { position: absolute; inset: 0; display: flex; align-items: center; }
.hero-content .container { max-width: none; padding-left: clamp(24px, 6vw, 96px); padding-right: clamp(24px, 6vw, 96px); }
.hero-content-inner { max-width: 680px; }
.hero .display { margin-bottom: var(--nk-s4); }
.hero .eyebrow { color: #d5d5d5; }
.hero .hero-ingress { font-size: 21px; line-height: 1.5; color: #e6e6e6; margin-bottom: var(--nk-s6); max-width: 580px; }
.hero .btn { margin-right: var(--nk-s3); }

.hero-dots {
  position: absolute;
  bottom: 20px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: flex-end;
  padding-right: clamp(24px, 6vw, 96px);
  gap: 10px;
  z-index: 5;
}
.hero-dots button {
  width: 12px; height: 12px;
  border-radius: 0;
  border: 2px solid var(--nk-white);
  background: transparent;
  padding: 0;
  opacity: 0.6;
}
.hero-dots button.is-active { background: var(--nk-orange); border-color: var(--nk-orange); opacity: 1; }

/* ---- Spec strip (lime, Metso accent) ---- */
.spec-strip { background: var(--nk-lime); color: var(--nk-black); }
.spec-strip-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--nk-s6);
  padding: var(--nk-s6) 0;
}
.spec-item .num {
  font-family: var(--nk-font-display);
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
}
.spec-item .label { font-size: 14px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; }

/* ---- Product grid ---- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--nk-s6); }
.product-card {
  position: relative;
  background: var(--nk-white);
  border: 1px solid var(--nk-border);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(9,9,9,0.12); }
.product-card .thumb {
  aspect-ratio: 4 / 3;
  background: var(--nk-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--nk-border);
}
.product-card .thumb img { width: 100%; height: 100%; object-fit: contain; padding: var(--nk-s4); }
.product-card .body { padding: var(--nk-s5); display: flex; flex-direction: column; flex: 1; }
.product-card h3 { margin-bottom: var(--nk-s2); }
.product-card .cat { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--nk-orange); font-weight: 700; margin-bottom: var(--nk-s2); }
.product-card p { font-size: 15px; color: var(--nk-gray); margin-bottom: var(--nk-s4); flex: 1; }
.product-card .more {
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-size: 13px;
  color: var(--nk-black);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.product-card .more::after { content: "→"; color: var(--nk-orange); }
.product-card:hover .more::after { transform: translateX(4px); transition: transform 0.2s; }

/* ---- Category blocks ---- */
.category-block { margin-bottom: var(--nk-s9); }
.category-block h3 {
  display: flex;
  align-items: center;
  gap: var(--nk-s3);
  margin-bottom: var(--nk-s5);
}
.category-block h3::after { content: ""; flex: 1; height: 3px; background: var(--nk-black); }
.section--dark .category-block h3::after { background: var(--nk-orange); }

/* ---- Feature tiles ---- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--nk-s6); }
.feature-tile { text-align: center; padding: var(--nk-s6) var(--nk-s4); }
.feature-tile img { width: 96px; height: 96px; margin: 0 auto var(--nk-s4); object-fit: contain; }
.feature-tile h4 { font-size: 20px; margin-bottom: var(--nk-s2); }
.feature-tile p { font-size: 15px; color: var(--nk-gray); }

/* ---- Stats ---- */
.facts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--nk-s6); }
.fact { border-top: 4px solid var(--nk-orange); padding-top: var(--nk-s4); }
.fact .num { font-family: var(--nk-font-display); font-size: 56px; font-weight: 700; line-height: 1; }
.fact h4 { font-size: 20px; margin: var(--nk-s3) 0 var(--nk-s2); }
.fact p { color: var(--nk-gray); font-size: 15px; }
.about-img { margin-top: var(--nk-s6); }

/* ---- Cases ---- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--nk-s6); }
.case-card { border: 1px solid var(--nk-border); background: var(--nk-white); }
.case-card .thumb { aspect-ratio: 4 / 3; overflow: hidden; background: var(--nk-light); border-bottom: 1px solid var(--nk-border); }
.case-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.case-card:hover .thumb img { transform: scale(1.04); }
.case-card .body { padding: var(--nk-s5); }
.case-card h3 { font-size: 22px; margin-bottom: var(--nk-s2); }
.case-card p { font-size: 14px; color: var(--nk-gray); }
.case-card .tag {
  display: inline-block;
  background: var(--nk-black);
  color: var(--nk-white);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 10px;
  margin-bottom: var(--nk-s3);
}
.section--dark .case-card { background: #141414; border-color: #2a2a2a; }
.section--dark .case-card .thumb { border-bottom-color: #2a2a2a; }
.section--dark .case-card h3 { color: var(--nk-white); }

/* ---- Page hero (interior) ---- */
.page-hero { background: var(--nk-black); color: var(--nk-white); padding: var(--nk-s9) 0; }
.page-hero h1 { margin-bottom: var(--nk-s3); }
.page-hero .breadcrumbs { font-size: 13px; color: #a9a9a9; margin-bottom: var(--nk-s5); }
.page-hero .breadcrumbs a:hover { color: var(--nk-mint); }
.page-hero .breadcrumbs .sep { margin: 0 8px; color: var(--nk-orange); }

/* ---- Product detail ---- */
.product-hero { background: var(--nk-black); color: var(--nk-white); padding: var(--nk-s9) 0 var(--nk-s7); }
.product-hero .grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: var(--nk-s8); align-items: center; }
.product-hero .hero-img { background: var(--nk-white); padding: var(--nk-s5); display: flex; align-items: center; justify-content: center; }
.product-hero .hero-img img { max-height: 460px; object-fit: contain; width: auto; margin: 0 auto; }
.product-hero h1 { margin-bottom: var(--nk-s3); }
.product-hero .ingress { font-size: 19px; color: #d5d5d5; margin-bottom: var(--nk-s6); }
.product-hero .key-specs { display: flex; flex-wrap: wrap; gap: var(--nk-s5); margin-top: var(--nk-s6); }
.product-hero .key-specs .ks { border-left: 3px solid var(--nk-orange); padding-left: var(--nk-s3); }
.product-hero .key-specs .ks .v { font-family: var(--nk-font-display); font-size: 30px; font-weight: 700; color: var(--nk-lime); }
.product-hero .key-specs .ks .l { font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: #aaa; }
.product-hero .breadcrumbs { font-size: 13px; color: #a9a9a9; margin-bottom: var(--nk-s5); }
.product-hero .breadcrumbs a:hover { color: var(--nk-mint); }
.product-hero .breadcrumbs .sep { margin: 0 8px; color: var(--nk-orange); }
.gallery { display: flex; gap: 12px; flex-wrap: wrap; margin-top: var(--nk-s4); }
.gallery img { border: 1px solid #333; }

.content-block { padding: var(--nk-s9) 0; border-bottom: 1px solid var(--nk-border); }
.content-block h2 { margin-bottom: var(--nk-s4); }
.content-block h3 { margin: var(--nk-s5) 0 var(--nk-s3); }
.content-block p, .content-block li { max-width: 840px; }
.content-block p + p { margin-top: var(--nk-s4); }
.content-block ul.tick { margin-top: var(--nk-s4); }
.content-block ul.tick li { padding-left: 28px; position: relative; margin-bottom: var(--nk-s3); }
.content-block ul.tick li::before {
  content: "✓";
  position: absolute; left: 0; top: 0;
  color: var(--nk-orange); font-weight: 700;
}

/* ---- Tables ---- */
.spec-table { width: 100%; border-collapse: collapse; margin-top: var(--nk-s4); font-size: 14px; }
.spec-table th, .spec-table td { border: 1px solid var(--nk-border); padding: 10px 14px; text-align: left; }
.spec-table thead th { background: var(--nk-black); color: var(--nk-white); font-weight: 600; letter-spacing: 1px; text-transform: uppercase; font-size: 12px; }
.spec-table tbody tr:nth-child(even) { background: var(--nk-light); }
.spec-table tbody tr:hover { background: #e9efef; }
.spec-table-wrapper { overflow-x: auto; margin-bottom: var(--nk-s6); }
.table-note { margin-top: var(--nk-s4); font-size: 13px; color: var(--nk-gray); }

/* ---- Applications ---- */
.app-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--nk-s4); }
.app-item { border: 1px solid var(--nk-border); padding: var(--nk-s5); background: var(--nk-white); }
.app-item h4 { font-family: var(--nk-font-display); font-size: 20px; margin-bottom: var(--nk-s2); }
.app-item p { font-size: 14px; color: var(--nk-gray); }

/* ---- FAQ ---- */
.faq-item { border-bottom: 1px solid var(--nk-border); }
.faq-item summary {
  padding: var(--nk-s5) 0;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--nk-s4);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 26px; color: var(--nk-orange); line-height: 1; }
.faq-item[open] summary::after { content: "−"; }
.faq-item .faq-body { padding: 0 0 var(--nk-s5); max-width: 840px; color: var(--nk-gray); }

/* ---- Trust strip ---- */
.trust-strip { background: var(--nk-light); border-bottom: 1px solid var(--nk-border); }
.trust-strip-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--nk-s6); padding: var(--nk-s6) 0; }
.trust-item h4 { font-family: var(--nk-font-display); font-size: 20px; margin-bottom: 4px; letter-spacing: 0.5px; }
.trust-item p { font-size: 13px; color: var(--nk-gray); }

/* ---- Legal note ---- */
.legal-note { font-size: 12px; color: #8a9199; max-width: 840px; margin-top: var(--nk-s6); }

/* ---- CTA banner ---- */
.cta-banner { background: var(--nk-orange); color: var(--nk-black); padding: var(--nk-s9) 0; }
.cta-banner h2 { margin-bottom: var(--nk-s3); }
.cta-banner p { font-size: 18px; max-width: 720px; margin-bottom: var(--nk-s6); }
.cta-banner .btn--black { background: var(--nk-black); color: var(--nk-white); }
.cta-banner .btn--black:hover { background: var(--nk-lime); color: var(--nk-black); }

/* ---- Contact / forms ---- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--nk-s8); }
.contact-info h3 { margin-bottom: var(--nk-s4); }
.contact-item { padding: var(--nk-s4) 0; border-bottom: 1px solid var(--nk-border); }
.contact-item .l { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--nk-gray); font-weight: 700; }
.contact-item .v { font-size: 18px; font-weight: 600; margin-top: 4px; }
.contact-item a:hover { color: var(--nk-orange); }

.form-block { background: var(--nk-light); border: 1px solid var(--nk-border); padding: var(--nk-s6); }
.form-block h3 { margin-bottom: var(--nk-s4); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--nk-s4); margin-bottom: var(--nk-s4); }
.form-field { display: flex; flex-direction: column; margin-bottom: var(--nk-s4); }
.form-field label { font-size: 13px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 6px; }
.form-field input, .form-field select, .form-field textarea {
  border: 1px solid var(--nk-border);
  border-radius: 0;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 15px;
  background: var(--nk-white);
  width: 100%;
}
.form-field textarea { min-height: 120px; resize: vertical; }
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { outline: 2px solid var(--nk-orange); outline-offset: -1px; }
.form-note { font-size: 12px; color: var(--nk-gray); margin-top: var(--nk-s3); }

/* ---- Footer ---- */
.site-footer { background: var(--nk-black); color: var(--nk-white); padding: var(--nk-s8) 0 0; }
.site-footer .logo { color: var(--nk-white); padding: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: var(--nk-s8); padding-bottom: var(--nk-s8); }
.footer-grid h4 { font-family: var(--nk-font-display); font-size: 20px; margin-bottom: var(--nk-s4); letter-spacing: 1px; }
.footer-grid a, .footer-grid p { color: #b5b5b5; font-size: 14px; }
.footer-grid li { margin-bottom: var(--nk-s2); }
.footer-grid a:hover { color: var(--nk-mint); }
.footer-about p { margin-top: var(--nk-s3); }
.footer-bottom {
  border-top: 1px solid #262626;
  padding: var(--nk-s4) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--nk-s4);
  font-size: 13px;
  color: #888;
}

/* ---- Utility ---- */
.mt-4 { margin-top: var(--nk-s4); }
.mt-6 { margin-top: var(--nk-s6); }

/* ---- Responsive ---- */
@media (max-width: 992px) {
  .product-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .facts-grid { grid-template-columns: 1fr 1fr; }
  .spec-strip-inner, .trust-strip-inner { grid-template-columns: repeat(2, 1fr); gap: var(--nk-s4); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-hero .grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .mega-inner { grid-template-columns: repeat(2, auto); gap: var(--nk-s5) var(--nk-s7); }
  .mega-links { grid-template-columns: 1fr; }
  :root { --nk-t-display: 56px; --nk-t-h1: 38px; }
}
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--nk-white);
    padding: var(--nk-s4) var(--nk-s5) var(--nk-s5);
    border-top: 1px solid var(--nk-border);
    box-shadow: 0 24px 48px rgba(9,9,9,0.15);
  }
  .nav.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .nav > a, .nav-parent { padding: var(--nk-s3) var(--nk-s2); }
  .nav-toggle { display: inline-block; }
  .nav-dropdown { flex-direction: column; }
  .nav-parent .caret { display: none; }
  .mega-panel { position: static; display: block; transform: none; padding-top: 0; }
  .mega-inner {
    grid-template-columns: 1fr;
    gap: var(--nk-s3);
    border: none;
    box-shadow: none;
    padding: 0 0 var(--nk-s3) var(--nk-s4);
    width: auto;
  }
  .mega-cat { margin-bottom: var(--nk-s1); margin-top: var(--nk-s2); }
  .mega-col a { padding: 4px 8px; white-space: normal; }
  .header-top .contacts .hide-mobile { display: none; }
  .hero-slide img.hero-bg { height: 400px; }
  .product-grid, .case-grid { grid-template-columns: 1fr; }
  .facts-grid { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--nk-s6); }
  .footer-bottom { flex-direction: column; text-align: center; }
  :root { --nk-t-display: 42px; --nk-t-h1: 32px; --nk-t-h2: 27px; }
}
@media (max-width: 576px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .spec-strip-inner, .trust-strip-inner { grid-template-columns: 1fr 1fr; }
  .section { padding: var(--nk-s8) 0; }
  .btn { width: 100%; margin-bottom: var(--nk-s2); }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}