body {
  font-family: 'Noto Sans JP', sans-serif;
  margin: 0;
  padding: 0;
  background: #fff8f0;
  color: #333;
  scroll-behavior: smooth;
}
nav {
  background: #e68a00;
  padding: 10px;
  position: sticky;
  top: 0;
  z-index: 1000;
}
nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 0;
}
nav ul li {
  margin: 0 15px;
}
nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}
header img {
  width: 100%;
  height: auto;
}
section {
  padding: 40px 20px;
  max-width: 1100px;
  margin: auto;
}
h2, h3 {
  color: #e68a00;
  text-align: center;
}
.projects-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}
.projects-grid img {
  width: 300px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
form {
  max-width: 600px;
  margin: auto;
}
input, textarea {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
}
button {
  background: #e68a00;
  color: white;
  padding: 10px 20px;
  border: none;
}
footer {
  background: #e68a00;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}
th, td {
  border: 1px solid #ccc;
  padding: 8px;
  text-align: center;
}