body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #0a1833;
  color: #fff;
  overflow-x: hidden;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2rem;
  background: #0a1833;
  box-shadow: 0 2px 12px rgba(10,24,51,0.08);
  position: fixed;
  width: 100vw;
  z-index: 10;
}
.logo {
  font-size: 2rem;
  font-weight: bold;
  color: #e63946;
  letter-spacing: 2px;
}
.about-link {
  color: #fff;
  text-decoration: none;
  font-size: 1.1rem;
  transition: color 0.2s;
}
.about-link:hover {
  color: #e63946;
}
.landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 5rem;
}
#three-bg {
  position: absolute;
  top: 0; left: 0; width: 100vw; height: 100vh;
  z-index: 0;
}
.logo-3d-container {
  width: 180px;
  height: 180px;
  margin: 0 auto 2rem auto;
  z-index: 2;
  background: rgba(10,24,51,0.7);
  border-radius: 50%;
  box-shadow: 0 8px 32px rgba(10,24,51,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
}
#logo-3d {
  width: 150px;
  height: 150px;
  display: block;
}
.tagline {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 2.5rem;
  z-index: 2;
  text-align: center;
}
.tagline span {
  color: #e63946;
}
.cards {
  display: flex;
  gap: 2rem;
  z-index: 2;
  margin-bottom: 2rem;
}
.card {
  background: #14213d;
  color: #fff;
  border-radius: 1.2rem;
  box-shadow: 0 8px 32px rgba(10,24,51,0.18);
  padding: 2rem 2.5rem;
  text-align: center;
  font-size: 1.3rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(.25,.8,.25,1), box-shadow 0.25s;
  will-change: transform;
  border: 2px solid transparent;
}
.card:hover, .card:focus {
  transform: translateY(-10px) scale(1.05) rotateX(8deg);
  box-shadow: 0 16px 48px rgba(230,57,70,0.18);
  border-color: #e63946;
}
.card-title {
  color: #e63946;
  font-size: 1.5rem;
  font-weight: bold;
}
.about-section {
  min-height: 60vh;
  background: #14213d;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(60px) scale(0.98);
  transition: opacity 0.8s cubic-bezier(.25,.8,.25,1), transform 0.8s cubic-bezier(.25,.8,.25,1);
  padding: 4rem 1.5rem;
}
.about-section.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.about-content {
  max-width: 600px;
  text-align: center;
}
.about-content h2 {
  color: #e63946;
  font-size: 2.2rem;
  margin-bottom: 1.2rem;
}
.mission, .tools, .audience {
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
}
@media (max-width: 900px) {
  .cards {
    flex-direction: column;
    gap: 1.2rem;
  }
  .landing {
    padding-top: 4rem;
  }
}
@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    padding: 0.8rem 1rem;
  }
  .logo-3d-container {
    width: 120px;
    height: 120px;
  }
  #logo-3d {
    width: 100px;
    height: 100px;
  }
  .tagline {
    font-size: 1.2rem;
  }
  .card {
    padding: 1.2rem 1.5rem;
    font-size: 1rem;
  }
  .about-content h2 {
    font-size: 1.3rem;
  }
}