:root {
  --blue: #1530a3;
  --blue-dark: #0a1b63;
  --blue-soft: #eaf0ff;
  --orange: #f47b20;
  --yellow: #ffb000;
  --dark: #101828;
  --muted: #667085;
  --light: #f6f8fc;
  --white: #ffffff;
  --border: #e6eaf2;
  --shadow: 0 20px 60px rgba(16, 24, 40, 0.12);
  --radius: 24px;
  --radius-sm: 14px;
  --container: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.narrow { max-width: 820px; }
.centered { text-align: center; }
.centered-actions { justify-content: center; }
.prose h2 { color: var(--blue-dark); margin-top: 28px; }

.top-strip {
  background: var(--blue-dark);
  color: rgba(255,255,255,.88);
  font-size: 13px;
}
.top-strip-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 38px;
  gap: 16px;
}
.top-strip a { color: #fff; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: 0 8px 25px rgba(16,24,40,.08);
}
.navbar { background: rgba(255,255,255,.96); backdrop-filter: blur(10px); }
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 82px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 175px; height: auto; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  font-weight: 700;
  color: var(--blue-dark);
}
.nav-menu a { position: relative; }
.nav-menu a:not(.btn)::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--yellow), var(--orange));
  transition: width .25s ease;
  border-radius: 4px;
}
.nav-menu a:hover::after,
.nav-menu a.active::after { width: 100%; }
.nav-toggle { display: none; border: 0; background: transparent; width: 42px; height: 42px; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; height: 3px; background: var(--blue-dark); margin: 6px 0; border-radius: 4px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 800;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(16,24,40,.15); }
.btn-primary { background: linear-gradient(135deg, var(--blue), #2658ff); color: #fff; }
.btn-light { background: rgba(255,255,255,.95); color: var(--blue-dark); }
.btn-outline { border-color: var(--blue); color: var(--blue); background: #fff; }
.btn-white { background: #fff; color: var(--blue-dark); }
.btn-small { min-height: 40px; padding: 9px 16px; font-size: 14px; }

.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--blue-dark);
}
.hero-bg, .hero-bg img, .hero-overlay { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay { background: linear-gradient(90deg, rgba(5,17,73,.88) 0%, rgba(5,17,73,.65) 44%, rgba(244,123,32,.15) 100%); }
.hero-content { position: relative; z-index: 2; color: #fff; max-width: 780px; margin-left: max(calc((100vw - var(--container)) / 2), 20px); }
.eyebrow, .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 14px;
}
.eyebrow::before, .section-kicker::before {
  content: '';
  width: 28px;
  height: 3px;
  background: linear-gradient(90deg, var(--yellow), var(--orange));
  border-radius: 99px;
}
.section-kicker.light { color: #fff; }
.section-kicker.light::before { background: #fff; }
.hero h1, .page-hero h1 {
  font-size: clamp(42px, 7vw, 86px);
  line-height: .98;
  letter-spacing: -0.06em;
  margin: 0 0 24px;
}
.hero p, .page-hero p { font-size: 20px; max-width: 700px; color: rgba(255,255,255,.9); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.page-hero {
  background:
    radial-gradient(circle at 75% 20%, rgba(244,123,32,.32), transparent 30%),
    linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #fff;
  padding: 110px 0 90px;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: 'B';
  position: absolute;
  right: 5%;
  bottom: -150px;
  font-size: 430px;
  color: rgba(255,255,255,.05);
  font-weight: 900;
  line-height: 1;
}
.compact-hero { padding: 90px 0 80px; }
.services-hero { background: linear-gradient(135deg, rgba(10,27,99,.95), rgba(21,48,163,.88)), url('../img/profile-telecom-engineer.jpg') center/cover; }
.contact-hero { background: linear-gradient(135deg, rgba(10,27,99,.94), rgba(21,48,163,.86)), url('../img/site-safety-team.jpg') center/cover; }
.quote-hero { background: linear-gradient(135deg, rgba(10,27,99,.94), rgba(21,48,163,.86)), url('../img/tower-team-banana-hill.jpg') center/cover; }

.section { padding: 92px 0; }
.muted-section { background: var(--light); }
.accent-section { background: linear-gradient(135deg, var(--blue-dark), var(--blue)); color: #fff; }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.align-center { align-items: center; }
.section h2, .cta-band h2, .form-card h2, .contact-panel h2 { font-size: clamp(32px, 4vw, 52px); line-height: 1.06; letter-spacing: -0.04em; margin: 0 0 20px; color: var(--blue-dark); }
.accent-section h2, .accent-section p { color: #fff; }
.section p { color: var(--muted); font-size: 17px; }
.section-heading { max-width: 780px; margin: 0 auto 44px; }
.section-heading p { margin-left: auto; margin-right: auto; }
.image-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: #fff; }
.image-card img { width: 100%; height: 520px; object-fit: cover; }
.tall-card img { height: 640px; }
.image-card-stacked { overflow: visible; }
.image-card-stacked img { border-radius: var(--radius); }
.floating-card {
  position: absolute;
  left: -28px;
  bottom: 28px;
  width: min(360px, calc(100% - 32px));
  background: #fff;
  padding: 22px;
  border-radius: 18px;
  box-shadow: var(--shadow);
  border-left: 6px solid var(--orange);
}
.floating-card strong { display: block; color: var(--blue-dark); font-size: 18px; }
.floating-card span { color: var(--muted); font-size: 14px; }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 28px; }
.stat-row div { background: var(--blue-soft); border-radius: 18px; padding: 18px; }
.stat-row strong { display: block; color: var(--blue); font-size: 30px; line-height: 1; }
.stat-row span { color: var(--muted); font-size: 13px; font-weight: 700; }
.cards-grid { display: grid; gap: 24px; }
.cards-grid.three { grid-template-columns: repeat(3, 1fr); }
.cards-grid.five { grid-template-columns: repeat(5, 1fr); }
.service-card, .value-card, .values-grid article {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(16,24,40,.07);
}
.service-card img { width: 100%; height: 245px; object-fit: cover; }
.service-card div { padding: 24px; }
.service-card span { color: var(--orange); font-weight: 900; }
.service-card h3, .values-grid h3, .feature-list h3, .project-card h3, .leader-mini-grid h3 { color: var(--blue-dark); line-height: 1.15; margin: 8px 0 10px; }
.service-card a { color: var(--blue); font-weight: 900; }
.value-card { padding: 36px; }
.big-card p { font-size: 18px; }
.icon-badge {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 26px;
  font-weight: 900;
  margin-bottom: 18px;
}
.two-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.values-grid article { padding: 24px; }
.values-grid article::before {
  content: '';
  display: block;
  width: 48px;
  height: 5px;
  background: linear-gradient(90deg, var(--yellow), var(--orange));
  border-radius: 99px;
  margin-bottom: 16px;
}
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta-band div { max-width: 780px; }
.gallery-preview { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.gallery-preview img { height: 500px; width: 100%; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
.gallery-preview img:nth-child(2) { margin-top: 48px; }
.check-list { list-style: none; padding: 0; margin: 24px 0; }
.check-list li { position: relative; padding-left: 34px; margin: 13px 0; color: var(--muted); font-weight: 600; }
.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}

.leadership-strip { background: #fff; }
.leader-mini-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 900px; margin: 0 auto; }
.leader-mini-grid article {
  display: flex;
  gap: 20px;
  align-items: center;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.leader-mini-grid img { width: 112px; height: 112px; object-fit: cover; border-radius: 20px; }
.leader-mini-grid p { margin: 0 0 4px; }
.leader-mini-grid a { color: var(--blue); font-weight: 800; }
.leadership-grid { display: grid; gap: 28px; }
.leader-card.full {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 38px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(16,24,40,.07);
}
.leader-card.full img { width: 100%; height: 430px; object-fit: cover; }
.leader-card.full div { padding-right: 34px; }
.contact-line { margin: 12px 0; color: var(--muted); }
.contact-line a { color: var(--blue); font-weight: 800; }

.feature-list { display: grid; gap: 14px; margin-top: 26px; }
.feature-list.two-col { grid-template-columns: repeat(2, 1fr); }
.feature-list article {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
}
.feature-list p { margin: 0; font-size: 15px; }
.service-detail:nth-child(even) .feature-list article { background: #fff; }
.project-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 24px; }
.project-card {
  position: relative;
  min-height: 360px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--blue-dark);
}
.project-card.large { grid-row: span 2; min-height: 748px; }
.project-card img { width: 100%; height: 100%; position: absolute; inset: 0; object-fit: cover; opacity: .92; }
.project-card::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(10,27,99,.88) 100%); }
.project-card div { position: absolute; z-index: 2; left: 24px; right: 24px; bottom: 22px; color: #fff; }
.project-card h3 { color: #fff; margin: 0 0 6px; }
.project-card p { color: rgba(255,255,255,.88); margin: 0; }

.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 34px; align-items: start; }
.contact-panel, .form-card, .cta-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: 0 14px 40px rgba(16,24,40,.07);
}
.contact-panel { position: sticky; top: 140px; }
.contact-list { display: grid; gap: 12px; margin: 24px 0; }
.contact-list a {
  display: block;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  color: var(--blue-dark);
}
.notice-box {
  background: var(--blue-soft);
  border-left: 5px solid var(--blue);
  border-radius: 14px;
  padding: 16px;
  color: var(--muted);
  margin-top: 18px;
}
.form-card h2 { font-size: 34px; }
.form-grid { display: grid; gap: 18px; }
.form-grid.two { grid-template-columns: repeat(2, 1fr); }
label { display: grid; gap: 8px; color: var(--blue-dark); font-weight: 800; margin-bottom: 18px; }
input, textarea, select {
  width: 100%;
  border: 1px solid #d5dbea;
  border-radius: 14px;
  min-height: 48px;
  padding: 13px 14px;
  font: inherit;
  color: var(--dark);
  background: #fff;
  outline: none;
}
textarea { resize: vertical; }
input:focus, textarea:focus, select:focus { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(21,48,163,.11); }
.hidden-field { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.form-note { display: block; margin: -6px 0 20px; color: var(--muted); }
.cta-panel.centered { max-width: 820px; margin: 0 auto; }
.cta-panel a:not(.btn) { color: var(--blue); font-size: 22px; font-weight: 900; }

.site-footer { background: #07144b; color: rgba(255,255,255,.82); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; padding: 64px 0; }
.footer-logo { width: 150px; background: #fff; border-radius: 18px; padding: 8px; margin-bottom: 18px; }
.site-footer h3 { color: #fff; margin-top: 0; }
.site-footer a { display: block; color: rgba(255,255,255,.86); margin: 8px 0; }
.site-footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); }
.footer-bottom-inner { min-height: 58px; display: flex; justify-content: space-between; align-items: center; gap: 16px; font-size: 14px; }
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: #fff;
  font-weight: 900;
  box-shadow: var(--shadow);
  z-index: 90;
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 1020px) {
  .top-strip-inner { flex-direction: column; padding: 10px 0; gap: 4px; text-align: center; }
  .nav-toggle { display: block; }
  .nav-menu {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 110px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 20px;
    box-shadow: var(--shadow);
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 8px 0; }
  .hero { min-height: 660px; }
  .split-grid, .contact-grid, .two-card-grid, .leader-card.full { grid-template-columns: 1fr; }
  .leader-card.full div { padding: 0 28px 30px; }
  .cards-grid.three, .cards-grid.five { grid-template-columns: repeat(2, 1fr); }
  .project-grid { grid-template-columns: 1fr 1fr; }
  .project-card.large { grid-row: auto; min-height: 420px; grid-column: span 2; }
  .contact-panel { position: static; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .container { width: min(100% - 28px, var(--container)); }
  .brand img { width: 145px; }
  .nav-inner { min-height: 72px; }
  .nav-menu { top: 110px; }
  .hero { min-height: 620px; }
  .hero-content { margin-left: 14px; margin-right: 14px; }
  .hero h1, .page-hero h1 { font-size: 42px; }
  .hero p, .page-hero p { font-size: 17px; }
  .section { padding: 64px 0; }
  .section h2, .cta-band h2 { font-size: 34px; }
  .cards-grid.three, .cards-grid.five, .leader-mini-grid, .feature-list.two-col, .form-grid.two, .project-grid, .footer-grid { grid-template-columns: 1fr; }
  .project-card.large { grid-column: auto; }
  .stat-row { grid-template-columns: 1fr; }
  .cta-band, .footer-bottom-inner { flex-direction: column; align-items: flex-start; }
  .gallery-preview { grid-template-columns: 1fr; }
  .gallery-preview img, .image-card img, .tall-card img { height: 360px; }
  .gallery-preview img:nth-child(2) { margin-top: 0; }
  .floating-card { left: 14px; right: 14px; bottom: 14px; }
  .leader-mini-grid article { flex-direction: column; align-items: flex-start; }
  .leader-card.full img { height: 360px; }
  .contact-panel, .form-card, .cta-panel { padding: 24px; }
  .page-hero { padding: 72px 0 62px; }
  .reverse-mobile > div:first-child { order: 2; }
  .reverse-mobile > div:last-child { order: 1; }
}