:root {
  --night: #06182b;
  --night-deep: #020d19;
  --panel: #08233b;
  --panel-soft: #0b2d49;
  --electric: #165dff;
  --cyan: #28d7ff;
  --cyan-pale: #a9eeff;
  --lime: #b8f33d;
  --white: #f6fbff;
  --muted: #9cb1c5;
  --line: rgba(40, 215, 255, 0.28);
  --line-hot: rgba(40, 215, 255, 0.72);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 68% 7%, rgba(22, 93, 255, 0.19), transparent 28rem),
    var(--night-deep);
  color: var(--white);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

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

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

.site-header {
  position: sticky;
  z-index: 80;
  top: 0;
  display: grid;
  min-height: 88px;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 42px;
  padding: 0 4vw;
  border-bottom: 1px solid var(--line);
  background: rgba(2, 13, 25, 0.91);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: clamp(0.84rem, 1.2vw, 1.08rem);
  font-weight: 800;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.brand-symbol {
  position: relative;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  transform: rotate(30deg);
  border: 1px solid var(--cyan);
}

.brand-symbol::before,
.brand-symbol::after {
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(40, 215, 255, 0.48);
  content: "";
}

.brand-symbol::after {
  inset: 11px;
}

.brand-symbol i {
  width: 4px;
  height: 4px;
  transform: rotate(-30deg);
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 12px var(--lime);
}

.site-header nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(20px, 2.4vw, 44px);
  color: #d8e6f0;
  font-size: 0.88rem;
}

.site-header nav a {
  position: relative;
  padding: 34px 0;
}

.site-header nav a::after {
  position: absolute;
  right: 0;
  bottom: 25px;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--cyan);
  content: "";
  transition: transform 180ms ease;
}

.site-header nav a:hover::after,
.site-header nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--cyan);
  font-size: 0.79rem;
  font-weight: 700;
  text-transform: uppercase;
}

.header-contact i {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--cyan);
  font-style: normal;
  font-size: 1.25rem;
}

.hero {
  position: relative;
  display: grid;
  min-height: calc(100vh - 88px);
  grid-template-columns: minmax(0, 0.86fr) minmax(570px, 1.14fr);
  gap: clamp(34px, 4.5vw, 78px);
  align-items: center;
  padding: 68px 4vw 72px;
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: -1;
  content: "";
}

.hero::before {
  inset: 0;
  opacity: 0.42;
  background-image:
    linear-gradient(rgba(40, 215, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40, 215, 255, 0.09) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, #000, transparent 92%);
}

.hero::after {
  top: 7%;
  right: 2%;
  width: 36vw;
  height: 36vw;
  border: 1px solid rgba(40, 215, 255, 0.12);
  border-radius: 50%;
  box-shadow: inset 0 0 90px rgba(22, 93, 255, 0.12);
}

.hero-grid {
  position: absolute;
  z-index: -1;
  inset: 24px;
  border: 1px solid rgba(40, 215, 255, 0.14);
  pointer-events: none;
}

.hero-grid::before,
.hero-grid::after {
  position: absolute;
  width: 48px;
  height: 48px;
  content: "";
}

.hero-grid::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
}

.hero-grid::after {
  right: -1px;
  bottom: -1px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
}

.coordinates {
  display: grid;
  gap: 4px;
  margin-bottom: clamp(46px, 7vh, 76px);
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}

.eyebrow,
.tech-code,
.section-index,
.laser-card small,
.laser-card .card-top p {
  font-family: "Courier New", monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 22px;
  color: var(--cyan);
  font-size: 0.68rem;
  font-weight: 700;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: "Arial Narrow", "Roboto Condensed", Arial, sans-serif;
  font-size: clamp(3.9rem, 6.4vw, 7.6rem);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 0.89;
  text-wrap: balance;
}

.hero-lead {
  max-width: 620px;
  margin: 34px 0 0;
  padding-top: 27px;
  border-top: 1px solid var(--line-hot);
  color: #bfceda;
  font-size: clamp(1rem, 1.5vw, 1.28rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  gap: 18px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 62px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 0 24px;
  border: 1px solid;
  font-size: 0.88rem;
  font-weight: 800;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.button span {
  font-size: 1.18rem;
  transition: transform 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button:hover span,
.button:focus-visible span {
  transform: translateX(4px);
}

.button-primary {
  border-color: var(--electric);
  background: var(--electric);
  box-shadow: 0 14px 32px rgba(22, 93, 255, 0.2);
}

.button-primary:hover {
  box-shadow: 0 18px 42px rgba(22, 93, 255, 0.34);
}

.button-outline {
  border-color: var(--cyan);
  background: rgba(6, 24, 43, 0.46);
}

.button-outline:hover {
  background: rgba(40, 215, 255, 0.09);
}

.trust-panel {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 18px;
  margin-top: 48px;
  padding: 16px 22px;
  border: 1px solid var(--line);
  background: rgba(4, 24, 42, 0.65);
}

.shield {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  color: var(--cyan);
  box-shadow: 0 0 18px rgba(40, 215, 255, 0.17);
}

.trust-panel p {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0;
  font-size: 0.82rem;
}

.trust-panel p span {
  position: relative;
  color: #d7e4ed;
}

.trust-panel p span::before {
  position: absolute;
  top: 50%;
  left: -11px;
  width: 4px;
  height: 4px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: var(--lime);
  content: "";
}

.laser-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.laser-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-hot);
  background:
    linear-gradient(150deg, rgba(12, 48, 78, 0.85), rgba(3, 16, 29, 0.97));
  clip-path: polygon(14px 0, calc(100% - 14px) 0, 100% 14px, 100% calc(100% - 20px), calc(100% - 20px) 100%, 20px 100%, 0 calc(100% - 20px), 0 14px);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
}

.laser-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 22px 50px rgba(0, 13, 28, 0.55);
}

.card-top {
  position: absolute;
  z-index: 2;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 26px 26px 34px;
  background: linear-gradient(to bottom, rgba(2, 13, 25, 0.98), transparent);
}

.card-top p {
  margin: 0 0 8px;
  color: var(--cyan);
  font-size: 0.61rem;
}

.card-top h2 {
  margin: 0;
  font-size: clamp(2.7rem, 4.8vw, 5.2rem);
  letter-spacing: -0.055em;
  line-height: 0.9;
}

.card-top > span {
  color: var(--cyan);
  font-size: 1.55rem;
}

.laser-card img {
  display: block;
  width: 100%;
  min-height: 560px;
  aspect-ratio: 0.77;
  object-fit: cover;
  opacity: 0.91;
  filter: saturate(0.88) contrast(1.06);
}

.card-bottom {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  min-height: 112px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 24px;
  border-top: 1px solid var(--line-hot);
  background: rgba(2, 13, 25, 0.94);
}

.card-bottom > div {
  display: grid;
  gap: 9px;
}

.card-bottom small {
  color: var(--cyan);
  font-size: 0.58rem;
}

.card-bottom strong {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-bottom a {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-size: 1.15rem;
  transition: background 180ms ease, color 180ms ease;
}

.card-bottom a:hover,
.card-bottom a:focus-visible {
  background: var(--cyan);
  color: var(--night-deep);
}

.section-shell {
  padding: 120px 6vw;
}

.selector {
  display: grid;
  grid-template-columns: 0.2fr 0.72fr 1.25fr;
  gap: clamp(32px, 5vw, 86px);
  align-items: start;
}

.section-index {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--cyan);
  font-size: 0.64rem;
}

.section-index span {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid var(--cyan);
}

.selector-copy h2 {
  margin: 0;
  font-family: "Arial Narrow", "Roboto Condensed", Arial, sans-serif;
  font-size: clamp(2.8rem, 5vw, 5.6rem);
  letter-spacing: -0.055em;
  line-height: 0.94;
}

.selector-copy > p:last-child {
  margin: 30px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.selector-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
}

.selector-grid article {
  min-height: 390px;
  padding: 34px;
  background: rgba(8, 35, 59, 0.5);
}

.selector-grid article + article {
  border-left: 1px solid var(--line);
}

.tech-code {
  color: var(--cyan);
  font-size: 0.62rem;
}

.selector-grid h3 {
  margin: 90px 0 18px;
  font-size: 1.45rem;
}

.selector-grid p {
  color: var(--muted);
  line-height: 1.75;
}

.selector-grid a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--cyan);
  font-size: 0.82rem;
  font-weight: 800;
}

.contact-strip {
  display: flex;
  min-height: 112px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 24px 6vw;
  border-block: 1px solid var(--cyan);
  background: var(--cyan);
  color: var(--night-deep);
}

.contact-strip p {
  margin: 0;
  font-size: clamp(1rem, 1.55vw, 1.28rem);
}

.contact-strip a {
  display: inline-flex;
  align-items: center;
  gap: 30px;
  padding: 16px 20px;
  border: 1px solid var(--night-deep);
  font-weight: 900;
}

.service-detail {
  position: relative;
  display: grid;
  grid-template-columns: 0.24fr 1fr;
  gap: clamp(42px, 7vw, 120px);
  border-top: 1px solid var(--line);
}

.service-detail::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(40, 215, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(40, 215, 255, 0.09) 1px, transparent 1px);
  background-size: 58px 58px;
  content: "";
  mask-image: linear-gradient(to bottom, #000, transparent 72%);
}

.service-detail-fiber {
  background: linear-gradient(135deg, rgba(7, 38, 65, 0.5), rgba(2, 13, 25, 0));
}

.detail-rail {
  position: sticky;
  top: 120px;
  height: fit-content;
  padding-top: 3px;
  color: var(--cyan);
  font-family: "Courier New", monospace;
}

.detail-rail span {
  display: block;
  width: fit-content;
  padding: 12px 14px;
  border: 1px solid var(--cyan);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.detail-rail p {
  max-width: 180px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.65;
  text-transform: uppercase;
}

.detail-main {
  max-width: 1120px;
}

.detail-main > h2,
.process-heading h2,
.locations-heading h2,
.audiences-heading h2,
.faq-heading h2,
.final-cta h2 {
  margin: 0;
  font-family: "Arial Narrow", "Roboto Condensed", Arial, sans-serif;
  font-size: clamp(3.1rem, 6vw, 6.8rem);
  letter-spacing: -0.06em;
  line-height: 0.91;
  text-wrap: balance;
}

.detail-lead {
  max-width: 900px;
  margin: 36px 0 0;
  padding-top: 28px;
  border-top: 1px solid var(--line-hot);
  color: #d0dce5;
  font-size: clamp(1.08rem, 1.6vw, 1.38rem);
  line-height: 1.75;
}

.copy-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 50px;
  margin-top: 56px;
  color: var(--muted);
  line-height: 1.85;
}

.copy-columns p {
  margin: 0;
}

.copy-columns strong {
  color: var(--white);
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 62px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.material-grid article {
  min-height: 205px;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 37, 62, 0.46);
}

.material-grid article > span {
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 1.1rem;
}

.material-grid h3 {
  margin: 42px 0 12px;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
}

.material-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.65;
}

.safety-note {
  display: grid;
  grid-template-columns: 0.34fr 1fr;
  gap: 36px;
  margin-top: 38px;
  padding: 24px 28px;
  border: 1px solid rgba(184, 243, 61, 0.45);
  background: rgba(184, 243, 61, 0.05);
}

.safety-note strong {
  color: var(--lime);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.safety-note p {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.7;
}

.fiber-note {
  border-color: var(--line-hot);
  background: rgba(40, 215, 255, 0.05);
}

.fiber-note strong {
  color: var(--cyan);
}

.detail-button {
  width: fit-content;
  margin-top: 38px;
}

.fiber-applications {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 62px;
  border: 1px solid var(--line);
}

.fiber-applications article {
  min-height: 260px;
  padding: 28px;
}

.fiber-applications article + article {
  border-left: 1px solid var(--line);
}

.fiber-applications article > span,
.audience-grid article > span {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 0.68rem;
}

.fiber-applications h3 {
  margin: 56px 0 14px;
  font-size: 1.05rem;
}

.fiber-applications p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.7;
}

.process,
.locations,
.audiences,
.faq {
  display: grid;
  grid-template-columns: 0.2fr 0.72fr 1.25fr;
  gap: clamp(32px, 5vw, 86px);
  border-top: 1px solid var(--line);
}

.process-heading h2,
.locations-heading h2,
.audiences-heading h2,
.faq-heading h2 {
  font-size: clamp(2.8rem, 5vw, 5.8rem);
}

.process-grid {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  list-style: none;
}

.process-grid li {
  min-height: 265px;
  padding: 30px;
}

.process-grid li:nth-child(even) {
  border-left: 1px solid var(--line);
}

.process-grid li:nth-child(n + 3) {
  border-top: 1px solid var(--line);
}

.process-grid li > span {
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 0.72rem;
}

.process-grid h3 {
  margin: 72px 0 14px;
  font-size: 1.12rem;
}

.process-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.68;
}

.keyword-band {
  overflow: hidden;
  border-block: 1px solid var(--cyan);
  background: var(--cyan);
  color: var(--night-deep);
}

.keyword-band > div {
  display: flex;
  min-width: max-content;
  align-items: center;
  gap: 42px;
  padding: 20px 4vw;
  font-family: "Courier New", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.keyword-band span {
  display: inline-flex;
  align-items: center;
  gap: 42px;
}

.keyword-band span::after {
  color: var(--electric);
  content: "+";
  font-size: 1.05rem;
}

.locations-heading > p:last-child {
  margin: 28px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.location-groups {
  grid-column: 2 / -1;
  display: grid;
  gap: 18px;
  margin-top: 10px;
}

.location-groups article {
  padding: 32px;
  border: 1px solid var(--line);
  background: rgba(7, 35, 59, 0.46);
}

.location-code {
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 0.64rem;
  letter-spacing: 0.12em;
}

.location-groups h3 {
  margin: 16px 0 26px;
  font-size: 1.2rem;
}

.location-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.location-tags span {
  padding: 8px 10px;
  border: 1px solid rgba(156, 177, 197, 0.22);
  color: #cad7e2;
  font-size: 0.73rem;
}

.location-tags span:hover {
  border-color: var(--cyan);
  color: var(--white);
}

.local-copy {
  grid-column: 2 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 42px;
  padding-top: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.local-copy p {
  margin: 0;
}

.local-copy strong {
  color: var(--white);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
}

.audience-grid article {
  min-height: 260px;
  padding: 28px;
}

.audience-grid article:not(:nth-child(3n + 1)) {
  border-left: 1px solid var(--line);
}

.audience-grid article:nth-child(n + 4) {
  border-top: 1px solid var(--line);
}

.audience-grid h3 {
  margin: 54px 0 14px;
  font-size: 1.05rem;
}

.audience-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.68;
}

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

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

.faq-list summary {
  display: grid;
  min-height: 88px;
  grid-template-columns: 42px 1fr 22px;
  align-items: center;
  gap: 20px;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
}

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

.faq-list summary span {
  color: var(--cyan);
  font-family: "Courier New", monospace;
  font-size: 0.65rem;
}

.faq-list summary i {
  color: var(--cyan);
  font-style: normal;
  font-size: 1.35rem;
  transition: transform 180ms ease;
}

.faq-list details[open] summary i {
  transform: rotate(45deg);
}

.faq-list details > p {
  max-width: 780px;
  margin: 0 0 30px 62px;
  color: var(--muted);
  line-height: 1.78;
}

.final-cta {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 60px;
  border-top: 1px solid var(--line);
}

.final-cta > div:first-child {
  max-width: 760px;
}

.final-cta h2 {
  font-size: clamp(3.2rem, 6vw, 6.7rem);
}

.final-cta > div:first-child > p:last-child {
  max-width: 650px;
  margin-top: 26px;
  color: var(--muted);
  line-height: 1.8;
}

.final-actions {
  display: grid;
  min-width: 350px;
  gap: 14px;
}

footer {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr 0.85fr;
  gap: 44px;
  padding: 72px 4vw 30px;
  border-top: 1px solid var(--line);
  background: #010a13;
}

.footer-brand > p {
  max-width: 380px;
  color: var(--muted);
  line-height: 1.7;
}

footer address,
.footer-hours,
.footer-links {
  display: grid;
  align-content: start;
  gap: 9px;
  color: var(--muted);
  font-size: 0.82rem;
  font-style: normal;
}

footer address strong,
.footer-hours strong {
  margin-bottom: 7px;
  color: var(--white);
}

.footer-hours small {
  max-width: 260px;
  margin-top: 8px;
  color: #69849a;
  line-height: 1.6;
}

footer a:hover {
  color: var(--cyan);
}

.copyright {
  grid-column: 1 / -1;
  margin: 28px 0 0;
  padding-top: 24px;
  border-top: 1px solid rgba(40, 215, 255, 0.12);
  color: #638098;
  font-size: 0.72rem;
}

@media (max-width: 1200px) {
  .site-header {
    grid-template-columns: auto 1fr;
  }

  .header-contact {
    display: none;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 860px;
  }

  .laser-cards {
    max-width: 900px;
  }

  .laser-card img {
    min-height: 620px;
  }

  .selector {
    grid-template-columns: 0.2fr 1fr;
  }

  .selector-grid {
    grid-column: 2;
  }

  .material-grid,
  .fiber-applications {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .fiber-applications article:nth-child(3) {
    border-left: 0;
  }

  .fiber-applications article:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .process,
  .locations,
  .audiences,
  .faq {
    grid-template-columns: 0.2fr 1fr;
  }

  .process-grid,
  .locations-heading,
  .audience-grid,
  .faq-list,
  .location-groups,
  .local-copy {
    grid-column: 2;
  }

  .audience-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .audience-grid article:nth-child(3n + 1) {
    border-left: 1px solid var(--line);
  }

  .audience-grid article:nth-child(odd) {
    border-left: 0;
  }

  .audience-grid article:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  footer {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header {
    position: relative;
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 13px;
    padding-block: 18px 12px;
  }

  .site-header nav {
    width: 100%;
    justify-content: flex-start;
    gap: 25px;
    overflow-x: auto;
  }

  .site-header nav a {
    padding: 6px 0 10px;
    white-space: nowrap;
  }

  .site-header nav a::after {
    bottom: 2px;
  }

  .hero {
    padding: 54px 5vw 65px;
  }

  .coordinates {
    margin-bottom: 42px;
  }

  .hero h1 {
    font-size: clamp(3.6rem, 15vw, 6.4rem);
  }

  .hero-actions,
  .laser-cards,
  .selector-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .trust-panel {
    width: 100%;
    align-items: flex-start;
  }

  .trust-panel p {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .trust-panel p span::before {
    display: none;
  }

  .laser-card img {
    min-height: auto;
    aspect-ratio: 4 / 4.4;
  }

  .selector {
    grid-template-columns: 1fr;
  }

  .selector-grid {
    grid-column: auto;
  }

  .selector-grid article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .service-detail,
  .process,
  .locations,
  .audiences,
  .faq {
    grid-template-columns: 1fr;
  }

  .detail-rail {
    position: static;
  }

  .copy-columns,
  .safety-note,
  .local-copy {
    grid-template-columns: 1fr;
  }

  .material-grid,
  .fiber-applications,
  .process-grid,
  .audience-grid {
    grid-template-columns: 1fr;
  }

  .fiber-applications article + article,
  .fiber-applications article:nth-child(3),
  .process-grid li:nth-child(even),
  .audience-grid article:nth-child(3n + 1),
  .audience-grid article:nth-child(even) {
    border-left: 0;
  }

  .fiber-applications article + article,
  .process-grid li + li,
  .audience-grid article + article {
    border-top: 1px solid var(--line);
  }

  .process-grid,
  .locations-heading,
  .audience-grid,
  .faq-list,
  .location-groups,
  .local-copy {
    grid-column: auto;
  }

  .detail-button {
    width: 100%;
  }

  .final-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .final-actions {
    width: 100%;
    min-width: 0;
  }

  footer {
    grid-template-columns: 1fr;
  }

  .copyright {
    grid-column: auto;
  }

  .contact-strip {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .section-shell {
    padding: 84px 5vw;
  }

  .brand {
    font-size: 0.75rem;
  }

  .brand-symbol {
    width: 32px;
    height: 32px;
  }

  .hero h1 {
    font-size: clamp(3.15rem, 16vw, 4.8rem);
  }

  .selector-copy h2 {
    font-size: 2.85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}