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

body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background: #ffffff;
}

.container {
  width: 90%;
  max-width: 1150px;
  margin: auto;
}

.site-header {
  background: #0f172a;
  color: #ffffff;
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: inline-flex;
  align-items: center;
}

.logo img {
  height: 26px;
  max-width: 160px;
  width: auto;
  display: block;
}

nav a {
  color: #ffffff;
  text-decoration: none;
  margin-left: 24px;
  font-size: 15px;
}

nav a:hover {
  color: #38bdf8;
}

.hero {
  background: linear-gradient(135deg, #0f172a, #1e3a8a);
  color: #ffffff;
  padding: 110px 0;
  text-align: center;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 13px;
  font-weight: 700;
  color: #38bdf8;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: 48px;
  max-width: 850px;
  margin: 0 auto 20px;
  line-height: 1.15;
}

.hero p {
  max-width: 750px;
  margin: 0 auto 32px;
  font-size: 19px;
  color: #dbeafe;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
}

.btn.primary {
  background: #38bdf8;
  color: #0f172a;
}

.btn.secondary {
  border: 1px solid #ffffff;
  color: #ffffff;
}

.section {
  padding: 80px 0;
}

.section.light {
  background: #f8fafc;
}

.section h2 {
  font-size: 34px;
  margin-bottom: 12px;
  text-align: center;
}

.section-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 40px;
  color: #4b5563;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
}

.card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 28px;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.card h3 {
  margin-bottom: 12px;
  color: #0f172a;
}

.card p {
  color: #4b5563;
}

.project-box {
  background: #ffffff;
  border-left: 5px solid #38bdf8;
  padding: 30px;
  border-radius: 12px;
  max-width: 850px;
  margin: auto;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 35px;
  align-items: center;
}

.about-grid h2 {
  text-align: left;
}

.about-grid p {
  margin-bottom: 16px;
  color: #4b5563;
}

.about-card {
  background: #0f172a;
  color: #ffffff;
  padding: 32px;
  border-radius: 16px;
}

.about-card p {
  color: #dbeafe;
}

.contact-section {
  background: #e0f2fe;
  text-align: center;
}

.email {
  margin-top: 18px;
  font-size: 18px;
  font-weight: 600;
  color: #0369a1;
}

.contact-section .address {
  margin-top: 6px;
  color: #4b5563;
  font-size: 15px;
}

.about-address {
  font-size: 14px;
  color: #6b7280;
  margin-top: 4px;
}

footer {
  background: #0f172a;
  color: #cbd5e1;
  text-align: center;
  padding: 22px 0;
}

/* Mobile Responsive */
@media (max-width: 900px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: 38px;
  }

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

@media (max-width: 600px) {
  .nav-container {
    flex-direction: column;
    gap: 14px;
  }

  nav a {
    margin: 0 8px;
  }

  .hero {
    padding: 80px 0;
  }

  .hero h1 {
    font-size: 32px;
  }

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