:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-deep: #040a12;
  --panel: #0b1828;
  --panel-light: #102136;
  --line: rgba(174, 198, 224, 0.14);
  --text: #f3f7fc;
  --muted: #aab7c8;
  --subtle: #77869a;
  --blue: #24a8ff;
  --blue-bright: #3eb8ff;
  --blue-dim: rgba(36, 168, 255, 0.12);
  --content: 1160px;
  font-family: "Poppins", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--blue-bright);
  outline-offset: 4px;
}

::selection {
  background: var(--blue);
  color: #fff;
}

.container {
  width: min(var(--content), calc(100% - 64px));
  margin-inline: auto;
}

.skip-link,
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  z-index: 100;
  top: 12px;
  left: 12px;
  width: auto;
  height: auto;
  padding: 10px 16px;
  margin: 0;
  clip: auto;
  background: var(--blue);
  color: white;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(4, 10, 18, 0.94);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Poppins", sans-serif;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.8px;
  line-height: 1.1;
  white-space: nowrap;
}

.brand > span:last-child > span {
  color: var(--blue-bright);
}

.brand small {
  display: block;
  padding-top: 5px;
  color: var(--subtle);
  font-family: "Poppins", sans-serif;
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 1.4px;
}

.brand-logo {
  display: block;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  object-fit: contain;
}

.primary-navigation {
  display: flex;
  align-items: center;
  gap: 31px;
}

.primary-navigation > a:not(.nav-cta) {
  position: relative;
  padding-block: 29px;
  color: #b8c3d0;
  font-size: 13px;
  transition: color 160ms ease;
}

.primary-navigation > a:not(.nav-cta)::after {
  position: absolute;
  right: 0;
  bottom: 19px;
  left: 0;
  height: 2px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.primary-navigation > a:not(.nav-cta):hover,
.primary-navigation > a[aria-current="page"] {
  color: #fff;
}

.primary-navigation > a:not(.nav-cta):hover::after,
.primary-navigation > a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-cta,
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 19px;
  border: 1px solid transparent;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 700;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.nav-cta,
.button-primary {
  background: var(--blue);
  color: #03101d;
}

.nav-cta:hover,
.button-primary:hover {
  background: #67c6ff;
  transform: translateY(-1px);
}

.nav-cta {
  min-height: 40px;
  padding-inline: 15px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: transparent;
  cursor: pointer;
}

.menu-toggle > span:not(.sr-only) {
  width: 18px;
  height: 1px;
  background: var(--text);
  transition: transform 160ms ease;
}

.menu-toggle[aria-expanded="true"] > span:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] > span:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

.home-hero {
  position: relative;
  display: flex;
  min-height: 660px;
  align-items: center;
  overflow: hidden;
  background-color: var(--bg-deep);
  background-image: linear-gradient(90deg, rgba(4, 10, 18, 0.99) 0%, rgba(4, 10, 18, 0.92) 31%, rgba(4, 10, 18, 0.4) 67%, rgba(4, 10, 18, 0.26) 100%), linear-gradient(0deg, rgba(4, 10, 18, 0.78), transparent 36%), url("assets/kerámia%20és%20grafen_desktop.png");
  background-position: center, center, center 52%;
  background-size: cover;
}

.home-hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(36, 168, 255, 0.5), transparent);
  content: "";
}

.hero-copy {
  position: relative;
  z-index: 1;
  padding-block: 94px 110px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue-bright);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.7px;
  line-height: 1.5;
  text-transform: uppercase;
}

.eyebrow-mark {
  display: inline-block;
  width: 22px;
  height: 1px;
  margin: 0 8px 3px 0;
  background: var(--blue);
}

.hero-copy h1,
.subpage-hero h1 {
  max-width: 780px;
  margin: 14px 0 11px;
  font-family: "Oswald", sans-serif;
  font-size: clamp(48px, 7.4vw, 88px);
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 0.99;
}

.hero-copy h1 span {
  color: var(--blue-bright);
}

.hero-tagline {
  max-width: 690px;
  margin: 22px 0 0;
  color: #d5e2f0;
  font-size: clamp(12px, 1.3vw, 15px);
  font-weight: 600;
  letter-spacing: 1.3px;
}

.hero-intro {
  max-width: 470px;
  margin: 19px 0 0;
  color: #afbdce;
  font-size: 15px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 29px;
}

.button-quiet,
.button-outline {
  border-color: rgba(207, 224, 242, 0.3);
  background: rgba(5, 13, 24, 0.24);
  color: var(--text);
}

.button-quiet:hover,
.button-outline:hover {
  border-color: var(--blue);
  background: var(--blue-dim);
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 38px;
  color: #9eacbc;
  font-size: 11px;
  letter-spacing: 0.5px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #48cc9b;
  box-shadow: 0 0 13px rgba(72, 204, 155, 0.6);
}

.hero-index {
  position: absolute;
  right: max(32px, calc((100vw - var(--content)) / 2));
  bottom: 44px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #9eacbc;
  font-size: 9px;
  letter-spacing: 1.5px;
}

.hero-index span {
  color: var(--blue-bright);
  font-size: 13px;
}

.hero-index i {
  width: 38px;
  height: 1px;
  background: var(--blue);
}

.section {
  padding-block: 88px;
}

.section-tight {
  padding-block: 38px;
}

.section-muted {
  border-block: 1px solid rgba(174, 198, 224, 0.07);
  background: #081422;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.benefit-card,
.coating-card,
.contact-card,
.partner-card {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(16, 33, 54, 0.76), rgba(9, 21, 35, 0.86));
}

.benefit-card {
  min-height: 185px;
  padding: 24px 25px;
}

.line-icon {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(36, 168, 255, 0.45);
  border-radius: 10px;
  color: var(--blue-bright);
  font-size: 11px;
  font-weight: 700;
}

.benefit-card h2 {
  margin: 18px 0 6px;
  font-family: "Poppins", sans-serif;
  font-size: 16px;
  font-weight: 700;
}

.benefit-card p,
.coating-body > p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 32px;
}

.section-heading h2,
.split-copy h2,
.care-banner h2 {
  margin: 0;
  font-family: "Poppins", sans-serif;
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: -1.8px;
  line-height: 1.2;
}

.partners-section .section-heading h2 {
  font-size: clamp(26px, 3vw, 32px);
  letter-spacing: -1.2px;
}

.section-aside {
  max-width: 445px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.coating-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.coating-card {
  overflow: hidden;
  border-radius: 10px;
  transition: border-color 180ms ease, transform 180ms ease;
}

.coating-card:hover {
  border-color: rgba(36, 168, 255, 0.52);
  transform: translateY(-3px);
}

.coating-image {
  display: block;
  height: 260px;
  overflow: hidden;
  background: var(--panel);
}

.coating-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}

.coating-card:hover .coating-image img {
  transform: scale(1.035);
}

.coating-body {
  padding: 24px 26px 27px;
}

.coating-body .eyebrow {
  margin-bottom: 8px;
  font-size: 9px;
}

.coating-body h3,
.contact-card h3 {
  margin: 0 0 8px;
  font-family: "Poppins", sans-serif;
  font-size: 22px;
  letter-spacing: -0.6px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  color: var(--blue-bright);
  font-size: 13px;
  font-weight: 700;
}

.text-link:hover {
  color: #90d9ff;
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  align-items: center;
  gap: clamp(36px, 7vw, 88px);
}

.split-image {
  height: 390px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--panel);
}

.split-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-copy h2 {
  margin-bottom: 17px;
}

.split-copy h2 span {
  color: var(--blue-bright);
}

.split-copy > p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.check-list {
  display: grid;
  gap: 9px;
  padding: 0;
  margin: 20px 0 25px;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: #c8d4e0;
}

.check-list li::before {
  position: absolute;
  top: 0.08em;
  left: 0;
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border: 1px solid rgba(36, 168, 255, 0.78);
  border-radius: 5px;
  background: var(--blue-dim);
  color: #83d6ff;
  content: "\2713";
  font-family: "Poppins", sans-serif;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}

.care-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 30px 34px;
  border: 1px solid var(--line);
  background: linear-gradient(100deg, #10243a, #091727);
}

.care-banner h2 {
  font-size: 26px;
}

.care-banner p:not(.eyebrow) {
  max-width: 620px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.faq-list {
  max-width: 900px;
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item:first-child {
  border-top: 1px solid var(--line);
}

.faq-item summary {
  position: relative;
  padding: 21px 48px 21px 0;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 8px;
  color: var(--blue-bright);
  content: "+";
  font-size: 24px;
  font-weight: 400;
  line-height: 1;
  transform: translateY(-50%);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item summary:focus-visible {
  outline: 2px solid var(--blue-bright);
  outline-offset: 4px;
}

.faq-item p {
  max-width: 760px;
  margin: -4px 48px 22px 0;
  color: var(--muted);
  font-size: 13px;
}

.subpage-hero {
  position: relative;
  overflow: hidden;
  padding-block: 94px 88px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(4, 10, 18, 0.99) 0%, rgba(4, 10, 18, 0.91) 48%, rgba(4, 10, 18, 0.45) 100%), url("assets/kerámia%20és%20grafen_desktop.png") center 48% / cover;
}

.subpage-hero::after {
  position: absolute;
  right: -5%;
  bottom: -80px;
  width: 460px;
  height: 220px;
  border: 1px solid rgba(36, 168, 255, 0.16);
  border-radius: 50%;
  content: "";
  transform: rotate(-18deg);
}

.subpage-hero .container {
  position: relative;
  z-index: 1;
}

.subpage-hero .eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
}

.subpage-hero .eyebrow a {
  color: #a9b9ca;
}

.subpage-hero .eyebrow a:hover {
  color: var(--blue-bright);
}

.subpage-hero h1 {
  max-width: 760px;
  margin-block: 19px 12px;
  font-size: clamp(38px, 5.5vw, 62px);
  letter-spacing: -1px;
  line-height: 1.12;
}

.subpage-hero .container > p:last-child {
  max-width: 590px;
  margin: 0;
  color: #b5c2d1;
  font-size: 15px;
}

.article-layout {
  display: grid;
  grid-template-columns: 245px minmax(0, 1fr);
  align-items: start;
  gap: clamp(42px, 7vw, 92px);
}

.article-aside {
  position: sticky;
  top: 110px;
  padding: 23px;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, #0c1d30, #091522);
}

.aside-title {
  margin: 0;
  font-family: "Poppins", sans-serif;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
}

.article-aside .text-link {
  margin-top: 22px;
  font-size: 12px;
}

.prose {
  min-width: 0;
  color: #c2cedb;
  font-size: 14px;
  line-height: 1.85;
}

.prose > :first-child {
  margin-top: 0;
}

.prose h2,
.prose h3,
.prose h4 {
  color: var(--text);
  font-family: "Poppins", sans-serif;
  font-weight: 700;
  letter-spacing: -0.55px;
  line-height: 1.4;
}

.prose h2 {
  margin: 0 0 17px;
  font-size: 28px;
}

.prose h3 {
  margin: 35px 0 10px;
  font-size: 20px;
}

.prose h4 {
  margin: 23px 0 7px;
  font-size: 16px;
}

.prose p {
  margin: 0 0 16px;
}

.prose strong {
  color: #eef5fc;
  font-weight: 700;
}

.prose .check-list {
  margin-top: 16px;
}

.prose .check-list li {
  padding-left: 27px;
}

.feature-panel {
  margin-top: 38px;
  padding: 26px 30px;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, #0d1d30, #091522);
}

.feature-panel h3 {
  margin-top: 0;
}

.feature-panel .eyebrow {
  margin-bottom: 8px;
  font-size: 9px;
}

.service-block {
  margin-top: 38px;
  padding-top: 4px;
}

.service-block h3 {
  color: #fff;
}

.service-block .button {
  margin-right: 10px;
}

.comparison-table th:first-child {
  width: 36%;
}

.comparison-table tbody th {
  color: var(--muted);
  font-weight: 600;
}

.comparison-table tbody td:nth-child(2),
.comparison-table tbody td:nth-child(3) {
  color: var(--text);
}

.price-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: #091522;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.price-table th,
.price-table td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
}

.price-table thead th {
  background: #102137;
  color: #aebed0;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.price-table tbody tr:last-child th,
.price-table tbody tr:last-child td {
  border-bottom: 0;
}

.price-table tbody tr:hover {
  background: rgba(36, 168, 255, 0.04);
}

.price-table tbody th {
  color: var(--text);
  font-weight: 600;
}

.size-badge {
  display: inline-grid;
  min-width: 35px;
  height: 27px;
  place-items: center;
  margin-right: 8px;
  border: 1px solid rgba(36, 168, 255, 0.38);
  border-radius: 4px;
  color: var(--blue-bright);
  font-size: 10px;
}

.price-value {
  color: var(--blue-bright);
  font-weight: 700;
  white-space: nowrap;
}

.price-note {
  max-width: 930px;
  margin: 18px 0 20px;
  color: var(--subtle);
  font-size: 11px;
}

.contact-heading {
  margin-bottom: 34px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.contact-card {
  min-height: 205px;
  padding: 23px;
  border-radius: 10px;
}

.contact-card .eyebrow {
  margin-bottom: 5px;
  font-size: 9px;
}

.contact-card h3 {
  min-height: 54px;
  font-size: 16px;
  letter-spacing: -0.3px;
}

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--blue-bright);
  font-size: 14px;
  font-weight: 700;
}

.phone-link:hover {
  color: #9ddfff;
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.partner-card {
  display: flex;
  min-height: 82px;
  align-items: center;
  gap: 12px;
  padding: 15px 17px;
  border-radius: 10px;
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.partner-card:hover,
.partner-card:focus-visible {
  border-color: rgba(36, 168, 255, 0.5);
  background: #0e2135;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.24), 0 0 0 1px rgba(36, 168, 255, 0.08);
  transform: translateY(-3px);
}

.partner-pin {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(36, 168, 255, 0.42);
  border-radius: 50%;
  color: var(--blue-bright);
  font-size: 19px;
}

.partner-card strong,
.partner-card small {
  display: block;
}

.partner-card strong {
  font-size: 13px;
}

.partner-card small {
  margin-top: 2px;
  color: var(--subtle);
  font-size: 10px;
}

.partner-arrow {
  margin-left: auto;
  color: var(--blue-bright);
}

.care-layout {
  grid-template-columns: 260px minmax(0, 1fr);
}

.care-tip {
  margin-top: 28px;
  padding-top: 19px;
  border-top: 1px solid var(--line);
}

.care-tip p {
  margin: 11px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.care-callout {
  display: grid;
  gap: 8px;
  margin: 25px 0;
  padding: 19px 22px;
  border-left: 2px solid var(--blue);
  background: var(--blue-dim);
}

.care-callout .eyebrow {
  margin: 0;
  font-size: 9px;
}

.care-callout strong {
  color: var(--text);
  font-size: 14px;
}

.care-image {
  aspect-ratio: 920 / 90;
  margin-top: 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-deep);
}

.care-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-footer {
  padding-top: 58px;
  border-top: 1px solid var(--line);
  background: var(--bg-deep);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.1fr 1.5fr 0.7fr;
  gap: 55px;
  padding-bottom: 46px;
}

.brand-footer {
  font-size: 16px;
}

.footer-about > p {
  max-width: 270px;
  margin: 15px 0 11px;
  color: var(--subtle);
  font-size: 12px;
}

.footer-blog {
  color: var(--blue-bright);
  font-size: 12px;
  font-weight: 700;
}

.footer-partner-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 24px;
  row-gap: 10px;
}

.footer-partner-list a,
.footer-nav > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: #aebaca;
  font-size: 11px;
  transition: color 150ms ease;
}

.footer-partner-list a:hover,
.footer-nav > a:hover,
.footer-bottom a:hover {
  color: var(--blue-bright);
}

.footer-partner-list a span {
  color: var(--blue-bright);
}

.footer-nav {
  display: grid;
  align-content: start;
  gap: 10px;
}

.footer-nav .eyebrow,
.footer-partners .eyebrow {
  margin-bottom: 4px;
}

.footer-bottom {
  display: flex;
  min-height: 59px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: var(--subtle);
  font-size: 10px;
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom a {
  transition: color 150ms ease;
}

@media (max-width: 900px) {
  .container {
    width: min(var(--content), calc(100% - 48px));
  }

  .primary-navigation {
    gap: 18px;
  }

  .primary-navigation > a:not(.nav-cta) {
    font-size: 12px;
  }

  .primary-navigation > a:not(.nav-cta)::after {
    bottom: 20px;
  }

  .home-hero {
    min-height: 600px;
  }

  .hero-copy h1 {
    font-size: clamp(50px, 9vw, 76px);
  }

  .article-layout,
  .care-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 34px;
  }

  .footer-main {
    grid-template-columns: 1fr 1.5fr;
    gap: 38px;
  }

  .footer-nav {
    grid-column: 2;
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-nav .eyebrow {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  html {
    scroll-padding-top: 76px;
  }

  .container {
    width: calc(100% - 40px);
  }

  .header-inner {
    min-height: 68px;
  }

  .menu-toggle {
    display: flex;
  }

  .primary-navigation {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 8px 20px 18px;
    border-bottom: 1px solid var(--line);
    background: rgba(4, 10, 18, 0.98);
  }

  .primary-navigation.is-open {
    display: flex;
  }

  .primary-navigation > a:not(.nav-cta) {
    padding: 13px 0;
    border-bottom: 1px solid rgba(174, 198, 224, 0.08);
    font-size: 14px;
  }

  .primary-navigation > a:not(.nav-cta)::after {
    display: none;
  }

  .nav-cta {
    align-self: flex-start;
    margin-top: 14px;
  }

  .home-hero {
    min-height: 600px;
    align-items: end;
    background-image: linear-gradient(90deg, rgba(4, 10, 18, 0.95), rgba(4, 10, 18, 0.54)), linear-gradient(0deg, rgba(4, 10, 18, 0.96) 1%, rgba(4, 10, 18, 0.25) 100%), url("assets/kerámia%20és%20grafen_desktop.png");
    background-position: center, center, 62% center;
  }

  .hero-copy {
    padding-block: 106px 86px;
  }

  .hero-copy h1 {
    font-size: clamp(47px, 12vw, 70px);
    letter-spacing: -3.5px;
  }

  .hero-tagline {
    max-width: 450px;
    font-size: 11px;
    line-height: 1.7;
  }

  .hero-intro {
    max-width: 410px;
    font-size: 14px;
  }

  .hero-index {
    right: 20px;
    bottom: 19px;
  }

  .section {
    padding-block: 64px;
  }

  .section-tight {
    padding-block: 27px;
  }

  .benefit-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .benefit-card {
    min-height: 0;
    padding: 19px;
  }

  .benefit-card h2 {
    margin-top: 13px;
  }

  .section-heading {
    display: block;
    margin-bottom: 25px;
  }

  .section-aside {
    margin-top: 12px;
  }

  .coating-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .coating-image {
    height: auto;
    aspect-ratio: 2 / 1;
  }

  .coating-image img {
    object-fit: contain;
  }

  .coating-body {
    padding: 20px;
  }

  .split-section {
    grid-template-columns: 1fr;
    gap: 27px;
  }

  .split-image {
    height: 270px;
  }

  .care-banner {
    align-items: flex-start;
    flex-direction: column;
    padding: 23px;
  }

  .subpage-hero {
    padding-block: 72px 65px;
    background-position: 58% center;
  }

  .subpage-hero h1 {
    font-size: clamp(37px, 9vw, 54px);
    letter-spacing: -2.4px;
  }

  .subpage-hero .container > p:last-child {
    font-size: 14px;
  }

  .article-layout,
  .care-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .article-aside {
    position: static;
    padding: 18px;
  }

  .aside-title br {
    display: none;
  }

  .prose {
    font-size: 14px;
  }

  .prose h2 {
    font-size: 25px;
  }

  .prose h3 {
    margin-top: 28px;
    font-size: 18px;
  }

  .feature-panel {
    padding: 22px;
  }

  .price-table {
    min-width: 720px;
  }

  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 11px;
  }

  .contact-card {
    min-height: 196px;
    padding: 18px;
  }

  .contact-card h3 {
    font-size: 14px;
  }

  .partner-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-nav {
    grid-column: auto;
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-nav .eyebrow {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    padding-block: 13px;
  }
}

@media (max-width: 430px) {
  .container {
    width: calc(100% - 32px);
  }

  .brand {
    gap: 7px;
    font-size: 15px;
  }

  .brand-logo {
    width: 38px;
    height: 38px;
  }

  .brand small {
    font-size: 7px;
  }

  .home-hero {
    min-height: 580px;
  }

  .hero-copy {
    padding-block: 88px 75px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button {
    justify-content: space-between;
  }

  .contact-grid,
  .partner-grid {
    grid-template-columns: 1fr;
  }

  .contact-card {
    min-height: 0;
  }

  .contact-card h3 {
    min-height: 0;
  }

  .footer-partner-list {
    grid-template-columns: 1fr;
  }
}

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