* {
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  margin: 0;
  padding: 0;
  background: #eef3e8;
  color: #333;
  font-size: 16px;
  line-height: 1.6;
}

section {
  padding: 60px 0;
}


header {
  text-align: center;
  padding: 30px 0;
  background: #1c4b2c;
  color: white;
  font-size: 24px;
}

nav {
  background: #2e6b3a;
  text-align: center;
  padding: 12px 0;
}

nav a {
  color: white;
  margin: 0 20px;
  text-decoration: none;
  font-size: 18px;
  font-weight: bold;
}


.slider {
  width: 100%;
  height: 600px;   
  overflow: hidden;
  background: #000;
}


.slides img {
  width: 100%;
  height: 100%;
  object-fit: contain;      
  object-position: center;
  background: #000;
  display: none;
}

.slides img.active {
  display: block;
}

.content {
  width: 90%;
  max-width: 900px;
  margin: 0 auto;
}

.content h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 28px;
  color: #1c4b2c;
}

.feature-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 50px;
  padding: 25px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.feature-item.reverse {
  flex-direction: row-reverse;
}

.feature-item img {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.feature-item .text {
  flex: 1;
}

.feature-item h3 {
  margin-top: 0;
  font-size: 22px;
  color: #1c4b2c;
}

form {
  width: 90%;
  max-width: 500px;
  margin: 0 auto;
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

form h2 {
  text-align: center;
  color: #1c4b2c;
  margin-bottom: 25px;
}

label {
  font-weight: bold;
  margin-top: 15px;
  display: block;
}

input, textarea {
  width: 100%;
  padding: 10px;
  margin-top: 6px;
  font-size: 16px;
  border: 1px solid #ccc;
}

button {
  padding: 12px 15px;
  font-size: 16px;
  margin-top: 20px;
  border: none;
  background: #2e6b3a;
  color: white;
  cursor: pointer;
  border-radius: 6px;
}

button:hover {
  background: #244f2d;
}

.error {
  color: red;
  font-size: 14px;
  height: 18px;
}