* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  background: #f6fbff;
  color: #12324a;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
}

.logo {
  font-size: 1.4rem;
  font-weight: bold;
  color: #0b63b6;
}

.nav-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: #12324a;
  font-weight: 600;
  transition: 0.3s;
}

.nav-links a:hover {
  color: #0b63b6;
}

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #0b63b6;
}

.hero {
  background: linear-gradient(rgba(11, 99, 182, 0.85), rgba(8, 61, 112, 0.88)), url('https://images.unsplash.com/photo-1576091160550-2173dba999ef?auto=format&fit=crop&w=1400&q=80') center/cover;
  color: white;
  padding: 100px 0;
}

.hero-content {
  max-width: 650px;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.05rem;
  margin-bottom: 30px;
  color: #e8f4ff;
}

.btn-group {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 22px;
  border: none;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
  display: inline-block;
}

.btn-primary {
  background: #ffffff;
  color: #0b63b6;
}

.btn-primary:hover {
  background: #dceeff;
}

.btn-secondary {
  background: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

section {
  padding: 70px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 2rem;
  color: #0b63b6;
  margin-bottom: 10px;
}

.section-title p {
  color: #5d7488;
  max-width: 700px;
  margin: auto;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 25px;
}

.card {
  background: #ffffff;
  padding: 25px;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
}

.card h3 {
  color: #0b63b6;
  margin-bottom: 12px;
}

.about {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 30px;
  align-items: center;
}

.about img {
  width: 100%;
  border-radius: 14px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
}

.product-card {
  background: #ffffff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.product-card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.product-info {
  padding: 18px;
}

.product-info h3 {
  color: #12324a;
  margin-bottom: 8px;
}

.price {
  color: #0b63b6;
  font-weight: bold;
  margin: 12px 0;
  display: block;
}

.testimonial-wrap {
  background: #ffffff;
  border-left: 5px solid #0b63b6;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

form {
  background: #ffffff;
  padding: 25px;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

form input,
form textarea {
  width: 100%;
  padding: 13px;
  margin-bottom: 15px;
  border: 1px solid #d7e4ef;
  border-radius: 8px;
  outline: none;
}

form textarea {
  resize: vertical;
  min-height: 130px;
}

.newsletter {
  background: #0b63b6;
  color: white;
  text-align: center;
  border-radius: 18px;
  padding: 45px 25px;
}

.newsletter form {
  background: transparent;
  box-shadow: none;
  padding: 20px 0 0;
  max-width: 600px;
  margin: auto;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.newsletter input {
  flex: 1;
  min-width: 240px;
  margin: 0;
}

footer {
  background: #083d70;
  color: #dceeff;
  text-align: center;
  padding: 22px 0;
  margin-top: auto;
}

.hidden {
  display: none;
}

@media (max-width: 900px) {
  .about,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 2.2rem;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 70px;
    right: 5%;
    background: white;
    flex-direction: column;
    width: 220px;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
    display: none;
  }

  .nav-links.show {
    display: flex;
  }
}