:root {
  --ink: #102033;
  --muted: #637083;
  --line: #dce3ea;
  --paper: #f6f8fb;
  --white: #ffffff;
  --blue: #0c4f8f;
  --blue-dark: #082d56;
  --yellow: #f2b705;
  --steel: #26384a;
  --shadow: 0 22px 60px rgba(15, 32, 51, 0.16);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}

a {
  color: inherit;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px max(20px, calc((100vw - 1120px) / 2));
  color: var(--white);
  transition: background 0.2s ease, box-shadow 0.2s ease, padding 0.2s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(8, 24, 42, 0.96);
  box-shadow: 0 12px 30px rgba(5, 16, 29, 0.24);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 2px solid rgba(255, 255, 255, 0.72);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.12);
  font-weight: 800;
  letter-spacing: 0.04em;
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

.brand strong {
  font-size: 0.95rem;
  line-height: 1.15;
}

.brand small {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.76rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  padding: 10px 12px;
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
}

.site-nav .nav-cta {
  margin-left: 8px;
  background: var(--yellow);
  color: #1c2430;
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta.is-active {
  background: #ffca24;
  color: #1c2430;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 760px;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-bg {
  background-image: url("assets/telecom-tower-hero.png");
  background-size: cover;
  background-position: center right;
  transform: scale(1.01);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(4, 17, 31, 0.92) 0%, rgba(7, 27, 48, 0.78) 38%, rgba(7, 27, 48, 0.22) 72%),
    linear-gradient(0deg, rgba(5, 17, 29, 0.28), rgba(5, 17, 29, 0.1));
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 132px 0 80px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--yellow);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 5.1rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.hero-copy {
  max-width: 640px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1rem, 2vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  text-decoration: none;
}

.btn.primary {
  background: var(--yellow);
  color: #1c2430;
}

.btn.secondary {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.btn.secondary.dark {
  border-color: rgba(16, 32, 51, 0.25);
  color: var(--ink);
  background: var(--white);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  max-width: 650px;
  gap: 1px;
  margin: 54px 0 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
}

.hero-stats div {
  padding: 20px;
  background: rgba(5, 20, 36, 0.42);
}

.hero-stats dt {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.hero-stats dd {
  margin: 4px 0 0;
  font-size: 1.55rem;
  font-weight: 800;
}

.section {
  padding: 92px 0;
}

.section:nth-of-type(even) {
  background: var(--paper);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 60px;
  align-items: start;
}

.split.reverse {
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
}

h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.25;
}

.intro-copy p,
.section-heading p,
.expertise p,
.panel p,
.contact-card p {
  color: var(--muted);
  font-size: 1.03rem;
}

.intro-copy p:first-child {
  margin-top: 0;
}

.profile {
  background: #eef3f8;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 42px;
}

.section-heading.compact {
  max-width: 720px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-grid article,
.vision-card,
.panel,
.field-team article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 10px 30px rgba(15, 32, 51, 0.06);
}

.feature-grid article {
  padding: 24px;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 28px;
  border-radius: var(--radius);
  background: #e9f1fb;
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 800;
}

.feature-grid p,
.service-card p,
.field-team li {
  color: var(--muted);
}

.service-list {
  display: grid;
  gap: 16px;
}

.service-card {
  display: grid;
  grid-template-columns: minmax(240px, 0.75fr) minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.service-card:last-child {
  border-bottom: 1px solid var(--line);
}

.service-card span,
.vision-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.vision-card {
  padding: 34px;
  background: var(--blue-dark);
  color: var(--white);
  box-shadow: var(--shadow);
}

.vision-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.2rem;
}

.panel {
  padding: 34px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 10px 30px rgba(15, 32, 51, 0.06);
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

caption {
  padding: 18px 20px;
  color: var(--ink);
  font-weight: 800;
  text-align: left;
}

th,
td {
  padding: 15px 20px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--steel);
  font-size: 0.84rem;
  text-transform: uppercase;
}

td {
  color: var(--muted);
}

td a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
}

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.equipment-grid div {
  min-height: 140px;
  padding: 22px;
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--blue-dark), #173f67);
  color: var(--white);
}

.equipment-grid strong {
  display: block;
  font-size: 2.3rem;
  line-height: 1;
}

.equipment-grid span {
  display: block;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.78);
}

.field-team {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 18px;
  margin-top: 22px;
}

.field-team article {
  padding: 24px;
}

.field-team ul {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding-left: 18px;
}

.contact-section {
  padding: 92px 0;
  background: linear-gradient(135deg, var(--blue-dark), #0e5d9d);
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
  padding: 42px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow);
}

.contact-card h2 {
  max-width: 680px;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 250px;
}

.mail-link {
  color: var(--blue);
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 24px 0;
  background: #08182a;
  color: rgba(255, 255, 255, 0.72);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: var(--white);
  text-decoration: none;
}

@media (max-width: 920px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 76px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius);
    background: rgba(8, 24, 42, 0.98);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav .nav-cta {
    margin-left: 0;
  }

  .hero {
    min-height: 700px;
  }

  .split,
  .split.reverse,
  .contact-card,
  .service-card,
  .field-team {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: 680px;
  }

  .hero-bg {
    background-position: 66% center;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(4, 17, 31, 0.94) 0%, rgba(7, 27, 48, 0.78) 62%, rgba(7, 27, 48, 0.36) 100%),
      linear-gradient(0deg, rgba(5, 17, 29, 0.38), rgba(5, 17, 29, 0.1));
  }

  .hero-content {
    padding-top: 112px;
  }

  .hero-actions,
  .contact-actions {
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .hero-stats,
  .feature-grid,
  .equipment-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 66px 0;
  }

  .feature-grid article,
  .vision-card,
  .panel,
  .field-team article,
  .contact-card {
    padding: 24px;
  }

  table {
    min-width: 560px;
  }

  .footer-inner {
    flex-direction: column;
  }
}