@charset "utf-8";
/** {
  outline: 1px solid red;
}*/
body {
  margin: 0;
}
.navi {
  padding-top: 250px;
}

.steel-section {
  padding-top: 30px;
}

.center-wrap {
  text-align: center;
}

.center-wrap img {
  max-width: 1200px;
  width: 70vw;
  height: auto;
}

.center-wrap h1 {
  color: #333;
  font-family: Georgia, 'Times New Roman', Times, serif;
  font-size: 30px;
  font-weight: 600;
  text-align: center;
}

/*問い合わせ*/
.contact-fixed {
  position: fixed;
  top: 300px;
  right:5%;
  width: 230px;
  z-index: 10;
  transition: opacity 0.3s ease;
  background-color: #365D36;
  padding: 10px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.7);
  font-family: sans-serif;
}

.steel-housing {
  padding: 40px 0;
}

.steel-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.steel-content {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
  align-items: center;
  border: 1px solid #757171;
  border-collapse: collapse;
  border-radius: 15px;
  padding: 20px;
}

.steel-image {
  width: 450px;
  height: auto;
}

.steel-text {
  max-width: 484px;
  font-size: clamp(20px,1.87vw,36px);
  line-height: 1.8;
  color: #333;
}

.steel-image-bottom {
  margin-top: 40px;
  text-align: center;
}

.steel-image-bottom img {
  width: 900px;
  height: auto;
}

.steel-gallery {
  padding: 40px 0;
  text-align: center;
}

.gallery-wrap {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.gallery-item {
  width: 300px;
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.gallery-item p {
  margin-top: 10px;
  font-size: 16px;
  color: #333;
}

.gallery-bottom {
  margin-top: 40px;
}

.gallery-bottom img {
  width: 100%;
  max-width: 588px;
  height: auto;
  padding-top: 30px;
}

@media screen and (max-width: 1300px) {
  .gallery-wrap {
    flex-direction: column;
    align-items: center;
  }

  .gallery-item {
    width: 90%;
    max-width: 300px;
  }
}

.steel-message {
  padding: 40px 0;
}

.message-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  font-size: 16px;
  color: #333;
}

.message-container p {
  margin-bottom: 1em;
  font-size: clamp(20px,1.87vw,36px);
  text-align: left;
}

.steel-types {
  padding: 40px 0;
}

.steel-types-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.steel-types-lead {
  font-size: clamp(18px,1.25vw,24px);
  font-weight: bold;
  margin-bottom: 40px;
  color: #333;
  text-align: center;
}

.steel-type {
  display: flex;
  gap: 30px;
  margin-bottom: 60px;
  flex-wrap: wrap;
  align-items: flex-start;
}

.steel-type-image {
  width: 300px;
  text-align: center;
}

.steel-type-image h2 {
  font-size: clamp(24px,2.5vw,48px);
  font-weight: 600;
  margin-bottom: 10px;
  color: #000;
}

.steel-type-image img {
  width: 100%;
  height: auto;
}

.steel-type-text {
  flex: 1;
  font-size: clamp(20px,1.87vw,36px);
  line-height: 1.8;
  color: #333;
}

.steel-type-text p {
  text-align: left;
}

@media screen and (max-width: 1300px) {
  .steel-type {
    flex-direction: column;
    align-items: center;
    text-align: left;
  }

  .steel-type-image,
  .steel-type-text {
    width: 100%;
    max-width: 600px;
  }

  .steel-type-image h2 {
    text-align: center;
  }
}