:root {
  --navy: #0a1626;
  --navy-2: #11243d;
  --blue: #1676f3;
  --blue-dark: #0e5fc9;
  --blue-soft: #eaf2ff;
  --page: #f4f6f9;
  --surface: #ffffff;
  --surface-soft: #eef2f6;
  --text: #182433;
  --text-soft: #536273;
  --muted: #75849a;
  --line: #d9e0e8;
  --line-strong: #c4d0de;
  --shadow: 0 12px 32px rgba(10, 22, 38, 0.07);
  --shadow-soft: 0 8px 20px rgba(10, 22, 38, 0.05);
  --radius-lg: 8px;
  --radius-md: 5px;
  --container: 1200px;
  --header-height: 82px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--page);
  overflow-x: hidden;
}
body.is-loading { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
.container { width: min(100% - 40px, var(--container)); margin-inline: auto; }
.section { padding: clamp(76px, 8vw, 112px) 0; }
.section--white { background: #fff; }
.section--soft { background: var(--surface-soft); }
.section--dark { background: var(--navy); }

.skip-link {
  position: absolute;
  left: 18px;
  top: 12px;
  z-index: 500;
  transform: translateY(-160%);
  padding: 10px 14px;
  border-radius: 999px;
  background: #ddecff;
  color: var(--navy);
}
.skip-link:focus { transform: translateY(0); }

.intro-loader {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: grid;
  place-items: center;
  background: #fff;
  transition: opacity 500ms ease, visibility 500ms ease;
}
.intro-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}
.intro-loader__inner {
  width: min(92vw, 580px);
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 24px;
}
.intro-loader__logo {
  width: 104px;
  filter: drop-shadow(0 6px 14px rgba(22, 118, 243, 0.12));
}
.intro-loader__title {
  color: var(--navy);
  font-size: clamp(1.65rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}
.intro-loader__subtitle {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.intro-loader__line {
  margin-top: 12px;
  height: 2px;
  background: #e6ecf3;
  overflow: hidden;
}
.intro-loader__line span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--blue) 0%, #8fc7ff 100%);
  transform-origin: left center;
  animation: lineGrow 1.25s ease forwards;
}
@keyframes lineGrow {
  from { transform: scaleX(0.08); }
  to { transform: scaleX(1); }
}

.top-strip {
  background: var(--navy);
  color: rgba(255,255,255,0.76);
  font-size: 0.84rem;
}
.top-strip__row,
.top-strip__left,
.top-strip__right {
  display: flex;
  align-items: center;
}
.top-strip__row {
  justify-content: space-between;
  min-height: 42px;
  gap: 16px;
}
.top-strip__left,
.top-strip__right {
  gap: 18px;
  flex-wrap: wrap;
}
.top-strip a:hover { color: #fff; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 300;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.site-header.is-scrolled { box-shadow: var(--shadow-soft); }
.header-row {
  min-height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
}
.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand img,
.footer-brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}
.brand__copy strong,
.footer-brand span {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.brand__copy span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.78rem;
}
.site-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 20px;
}
.site-nav a {
  color: var(--text-soft);
  font-size: 0.94rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.site-nav a:hover,
.site-nav a:focus-visible { color: var(--blue-dark); }
.header-phone,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  font-weight: 800;
}
.header-phone {
  color: #fff;
  background: var(--navy);
  border-radius: var(--radius-md);
}
.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--navy);
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, #f4f6f9 100%);
  padding: clamp(64px, 8vw, 100px) 0 56px;
}
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.78fr);
  gap: clamp(30px, 5vw, 60px);
  align-items: start;
}
.section-label {
  margin: 0 0 16px;
  color: var(--blue-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.section-label::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: currentColor;
}
.section-label--small {
  font-size: 0.72rem;
}
.section-label--inverse {
  color: #8fc8ff;
}
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 {
  color: var(--text);
  letter-spacing: -0.05em;
}
h1 {
  max-width: 740px;
  margin-bottom: 18px;
  font-size: clamp(2.9rem, 6vw, 5.25rem);
  line-height: 0.96;
}
h2 {
  margin-bottom: 0;
  font-size: clamp(1.9rem, 3.8vw, 3rem);
  line-height: 1.03;
}
h3 {
  margin-bottom: 10px;
  font-size: 1.18rem;
}
p {
  color: var(--text-soft);
  line-height: 1.72;
}
.hero__text {
  max-width: 680px;
  margin-bottom: 28px;
  font-size: clamp(1.04rem, 1.7vw, 1.17rem);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 0;
}
.button {
  border: 0;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease;
  border-radius: var(--radius-md);
}
.button:hover,
.button:focus-visible { transform: translateY(-2px); }
.button--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  box-shadow: 0 14px 28px rgba(22, 118, 243, 0.18);
}
.button--secondary {
  color: var(--navy);
  background: #fff;
  border: 1px solid var(--line-strong);
}
.hero__media {
  display: grid;
  gap: 18px;
}
.hero__image {
  min-height: 300px;
  background:
    linear-gradient(180deg, rgba(10,22,38,0.14), rgba(10,22,38,0.36)),
    url("assets/circuit-lightning-bg.jpg") center / cover no-repeat;
  border: 1px solid #11243a;
  box-shadow: var(--shadow);
}
.hero__card,
.service-table__row,
.standard-card,
.project-card,
.project-note,
.contact-card,
.quote-form,
.overview-band__grid > div {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.hero__card {
  padding: 24px;
}
.hero__card ul {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--text-soft);
  line-height: 1.72;
}

.overview-band {
  padding: 0 0 8px;
}
.overview-band__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.overview-band__grid > div {
  padding: 22px 24px;
}
.overview-band__grid span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.overview-band__grid strong { display: block; line-height: 1.45; }

.intro-section__grid,
.split-layout,
.contact-grid,
.footer-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}
.intro-section__grid,
.split-layout,
.contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
.section-heading { max-width: 780px; }
.section-heading--center { text-align: center; margin-inline: auto; }
.section-heading--inverse h2,
.section-heading--inverse p { color: #fff; }
.tagline {
  margin-top: 18px;
  color: var(--navy);
  font-weight: 800;
}

.service-table {
  margin-top: 30px;
  display: grid;
  gap: 14px;
}
.service-table__row {
  display: grid;
  grid-template-columns: 92px minmax(220px, 0.85fr) minmax(0, 1.15fr);
  gap: 22px;
  align-items: start;
  padding: 24px;
}
.service-table__number {
  color: var(--blue-dark);
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
}
.service-table__title h3,
.service-table__text p { margin-bottom: 0; }

.split-layout__media img,
.project-card img {
  width: 100%;
  object-fit: cover;
}
.list-blocks {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}
.list-blocks article {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.standards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.standard-card {
  padding: 24px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: none;
}
.standard-card span,
.standard-card h3,
.standard-card p {
  color: #fff;
}
.standard-card span {
  display: inline-block;
  margin-bottom: 16px;
  color: #8fc8ff;
  font-size: 0.95rem;
  font-weight: 800;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 30px;
}
.project-card,
.project-note { overflow: hidden; }
.project-card img { height: 300px; }
.project-card__copy,
.project-note { padding: 22px 24px 24px; }
.project-note {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--surface-soft);
}

.contact-card,
.quote-form {
  padding: 28px;
}
.contact-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.contact-list a,
.contact-list span {
  display: block;
  color: var(--text-soft);
  font-weight: 600;
}
.quote-form {
  display: grid;
  gap: 16px;
}
.quote-form label {
  display: grid;
  gap: 8px;
  color: var(--text-soft);
  font-weight: 600;
}
.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--text);
}
.quote-form input:focus,
.quote-form select:focus,
.quote-form textarea:focus {
  outline: 2px solid rgba(22,118,243,0.14);
  border-color: var(--blue);
}
.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  padding: 30px 0 38px;
  background: var(--navy);
  color: rgba(255,255,255,0.78);
}
.footer-grid {
  grid-template-columns: 1.3fr auto auto;
  align-items: start;
}
.footer-brand { color: #fff; }
.site-footer p {
  margin: 14px 0 0;
  color: rgba(255,255,255,0.64);
}
.footer-grid__links,
.footer-grid__contact {
  display: grid;
  gap: 10px;
}
.footer-grid__links a,
.footer-grid__contact a { color: rgba(255,255,255,0.78); }
.footer-grid__links a:hover,
.footer-grid__contact a:hover { color: #fff; }

@media (max-width: 1100px) {
  .hero__grid,
  .intro-section__grid,
  .split-layout,
  .contact-grid,
  .footer-grid,
  .header-row {
    grid-template-columns: 1fr;
  }
  .header-row { padding: 14px 0; }
  .site-nav { justify-self: stretch; }
  .overview-band__grid,
  .standards-grid,
  .projects-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-table__row { grid-template-columns: 70px 1fr; }
  .service-table__text { grid-column: 2; }
}

@media (max-width: 760px) {
  .container { width: min(100% - 28px, var(--container)); }
  .top-strip { display: none; }
  .intro-loader__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 12px;
  }
  .intro-loader__logo { margin-inline: auto; }
  .header-row {
    grid-template-columns: auto auto;
    gap: 12px;
  }
  .nav-toggle { display: inline-block; justify-self: end; }
  .site-nav {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0 2px;
  }
  .site-nav.is-open { display: flex; }
  .header-phone { grid-column: 1 / -1; }
  h1 { font-size: clamp(2.4rem, 12vw, 4rem); }
  h2 { font-size: clamp(1.8rem, 8vw, 2.8rem); }
  .overview-band__grid,
  .standards-grid,
  .projects-grid { grid-template-columns: 1fr; }
  .service-table__row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .service-table__text { grid-column: auto; }
  .project-card img { height: 230px; }
  .hero__card,
  .service-table__row,
  .standard-card,
  .project-note,
  .contact-card,
  .quote-form,
  .project-card__copy { padding: 22px; }
}