body {
  font-family: "Arial", sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  color: #333;
  line-height: 1.6;
}

main {
  padding-top: 10vh;
}

header {
  height: 8vh;
  top: 0;
  left: 0;
  position: fixed;
  width: 100%;
  z-index: 1000;
}

h1 {
  text-align: center;
  color: white;
  padding: 25px;
  font-size: 2.5rem;
  background-color: #2c3e50;
  margin: 0;
}

.description {
  width: 95%;
  margin: 20px auto;
  padding: 10px;
  padding-bottom: 0px;
}

.description h2 {
  color: #2980b9;
  font-size: 1.8rem;
  margin-top: 0;
  border-bottom: 2px solid #2980b9;
  padding-bottom: 10px;
}

.description p {
  font-size: 1.4rem;
  line-height: 1.7;
  margin-bottom: 15px;
}

.container {
  padding: 20px;
  margin: 0 auto;
}

.case-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  margin-top: 5px;
}

.case-box {
  display: flex;
  flex-direction: column;
  width: 30%;
  background-color: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
  text-decoration: none;
  color: #333;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-box:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
}

.case-box img {
  margin-left: 10%;
  margin-bottom: 8px;
  width: 80%;
  height: 350px;
  object-fit: cover;
  border-bottom: 1px solid #eee;
}

.case-box h3 {
  padding: 20px 20px 10px;
  margin: 0;
  color: #2c3e50;
  font-size: 1.5rem;
}

.case-box p {
  padding: 0 20px 20px;
  margin: 0;
  line-height: 1.7;
  color: #555;
  font-size: 1.3rem;
}

@media (max-width: 1440px) {
  .case-box {
    width: 45%;
  }

  .description p {
    font-size: 1.3rem;
  }

  .case-box p {
    font-size: 1.2rem;
  }
}

@media (max-width: 1024px) {
  .case-box {
    width: 45%;
  }

  .case-box img {
    height: 300px;
  }

  h1 {
    font-size: 2.2rem;
    padding: 20px;
  }

  .description h2 {
    font-size: 1.6rem;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 1.8rem;
  }

  main {
    padding-top: 8vh;
  }

  .case-box {
    width: 80%;
  }

  .case-container {
    gap: 30px;
  }

  .description {
    width: 90%;
  }

  .description p {
    font-size: 1.3rem;
  }

  .case-box p {
    font-size: 1.22rem;
  }

  .case-box img {
    height: 280px;
  }
}

@media (max-width: 425px) {
  h1 {
    font-size: 1.6rem;
    padding: 15px;
  }

  main {
    padding-top: 6vh;
  }

  .description h2 {
    font-size: 1.4rem;
  }

  .case-box {
    width: 90%;
  }

  .case-box img {
    height: 250px;
    margin-left: 5%;
    width: 90%;
  }

  .case-box h3 {
    padding: 15px 15px 8px;
    font-size: 1.3rem;
  }

  .case-box p {
    padding: 0 15px 15px;
  }

  p {
    font-size: 1.1rem;
  }
}

@media (max-width: 375px) {
  h1 {
    font-size: 1.4rem;
  }

  .description h2 {
    font-size: 1.2rem;
  }

  .description p {
    font-size: 1rem;
  }

  .case-box p {
    font-size: 0.95rem;
  }

  .case-box img {
    height: 220px;
  }
}

@media (max-width: 320px) {
  h1 {
    font-size: 1.4rem;
    padding: 12px;
  }

  .description h2 {
    font-size: 1.2rem;
  }

  .description p {
    font-size: 0.9rem;
  }

  .case-box p {
    font-size: 0.85rem;
  }

  .case-box {
    width: 95%;
  }

  .case-box img {
    height: 200px;
  }

  .case-box h3 {
    font-size: 1.1rem;
    padding: 12px 12px 6px;
  }
}