* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: #162033;
  background: #ffffff;
  line-height: 1.6;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,0.94);
  border-bottom: 1px solid #e8edf5;
  backdrop-filter: blur(12px);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #0d2b4c;
}

.logo span {
  color: #0c8ed9;
}

nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

nav a {
  color: #25344a;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
}

nav a:hover {
  color: #0c8ed9;
}

.hero {
  min-height: 620px;
  position: relative;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(7,21,41,0.88), rgba(7,21,41,0.54), rgba(7,21,41,0.18)),
    url("images/smartphone.jpg") center/cover no-repeat;
}

.hero-content {
  position: relative;
  color: white;
  max-width: 820px;
  padding: 80px 0;
}

.eyebrow {
  color: #0c8ed9;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  font-size: 13px;
  margin-bottom: 12px;
}

.hero .eyebrow {
  color: #7bd6ff;
}

h1 {
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.05;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.12;
  margin-bottom: 18px;
  color: #0d2b4c;
}

h3 {
  font-size: 22px;
  margin-bottom: 10px;
  color: #0d2b4c;
}

.hero-text {
  max-width: 650px;
  font-size: 20px;
  color: #eaf6ff;
  margin-bottom: 30px;
}

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

.btn {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn.primary {
  color: white;
  background: #0c8ed9;
}

.btn.secondary {
  color: white;
  border: 2px solid rgba(255,255,255,0.8);
}

.section {
  padding: 90px 0;
}

.alt {
  background: #f4f8fc;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 50px;
  align-items: center;
}

.reverse {
  grid-template-columns: 0.95fr 1.05fr;
}

.rounded-img {
  width: 100%;
  min-height: 320px;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: 0 24px 60px rgba(13,43,76,0.16);
}

.center {
  text-align: center;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 42px;
}

.card {
  background: white;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(13,43,76,0.10);
  border: 1px solid #e3edf7;
}

.card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  display: block;
}

.card-body {
  padding: 26px;
}

.checklist {
  list-style: none;
  margin-top: 20px;
}

.checklist li {
  padding: 12px 0 12px 34px;
  position: relative;
  font-weight: 700;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #0c8ed9;
  font-weight: 900;
}

.dark {
  background:
    linear-gradient(90deg, rgba(6,18,36,0.94), rgba(6,18,36,0.82)),
    url("images/gears.png") center/cover no-repeat;
  color: white;
}

.dark h2 {
  color: white;
}

.dark p {
  color: #d9e8f8;
}

.logo-section {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 40px;
  align-items: center;
}

.client-box {
  background: white;
  border-radius: 24px;
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.client-box img {
  width: 140px;
  height: 140px;
  object-fit: contain;
}

.banner {
  padding: 70px 0;
  text-align: center;
  background: linear-gradient(135deg, #0c8ed9, #063b67);
  color: white;
}

.banner h2 {
  color: white;
}

.banner p {
  margin-bottom: 24px;
  font-size: 18px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  align-items: start;
}

.contact-card {
  background: #f4f8fc;
  padding: 32px;
  border-radius: 24px;
  border: 1px solid #e3edf7;
}

.contact-card p {
  margin-bottom: 12px;
}

.small {
  color: #69798d;
  font-size: 14px;
}

footer {
  background: #061224;
  color: #d9e8f8;
  padding: 26px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

footer a {
  color: #7bd6ff;
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 850px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 0;
  }

  .hero {
    min-height: 560px;
  }

  .split,
  .reverse,
  .cards,
  .logo-section,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 64px 0;
  }

  .rounded-img {
    min-height: 240px;
  }

  .cards {
    gap: 20px;
  }
}