.company-header-bg {
  background-color: #fff;
  width: 100%;
}
.main-header {
  width: 100%;
  background-color: #ffffff;
  border-bottom: 1px solid #e0e0e0;
}
.header-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}
.main-nav a {
  font-size: 1rem;
  color: #16163f;
  transition: all 0.3s ease;
  text-decoration: none;
}
.main-nav a:hover {
  color: #e14e32;
  text-decoration: underline;
}
.company-visual {
  width: 100%;
  height: 25.25rem;
  background-image: url("../img/company/main.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.company-header-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 15px;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.company-heading-left, .company-heading-right {
  flex: 1;
  min-width: 300px;
}
.company-lead-text {
  font-size: 2.25rem;
  color: #333333;
  line-height: 1.6;
}
.company-table-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 4rem 1rem;
}
.company-table {
  width: 100%;
  border-collapse: collapse;
  color: #333333;
  font-size: 1.125rem;
  border: 3px solid #333333;
}
.company-table th, .company-table td {
  border: 1px solid #333333;
  padding: 1rem 1.5rem;
  vertical-align: top;
  text-align: left;
  word-break: break-word;
}
.company-table .table-header th, .company-table .table-header td {
  border-bottom: 3px solid #333333;
}
.company-table tr:first-child th {
  border-top: 3px solid #333333;
}
.company-table tr:last-child td {
  border-bottom: 3px solid #333333;
}
.company-about-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 60px 15px;
  color: #1e1e3f;
}
h1.page-title-about {
  font-size: 3rem;
  font-weight: 500;
  color: #333333;
  margin: 0;
}
h2.sub_title {
  font-size: 1.5rem;
  font-weight: 500;
  color: #333333;
  margin: 0 0 35px 0;
}
.about_company {
  line-height: 1.8;
}
.about_company span {
  font-weight: 600;
}
.about_company ul {
  margin: 0 0 40px 0;
}
.about_company ul.about_strong {
  list-style: "■";
}
.about_company ul.about_strong li::before {
  content: "";
  margin-right: 5px;
}
.about_company ul.about_strong li {
  margin: 5px 0 20px 0;
}
.company-message-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 60px 15px;
  color: #1e1e3f;
}
.about_message {
  line-height: 1.8;
  display: flex;
  flex: auto;
}
.about_message .left {
  width: 75%;
}
.about_message .right {
  width: 25%;
  text-align: right;
}
.about_message .right img {
  display: block;
  margin-left: auto;
}
.about_company span {
  font-weight: 600;
}
.company-history-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 60px 15px;
  color: #1e1e3f;
}
.history-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 3rem;
}
.history-table td {
  vertical-align: top;
  padding: 1.5rem 1rem;
  font-size: 1.125rem;
  border-bottom: 1px solid #ccc;
}
.history-table td:first-child {
  min-width: 160px;
  font-weight: bold;
}
@media screen and (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
    gap: 1rem;
  }
  .main-nav {
    flex-direction: column;
    width: 100%;
    gap: 0.5rem;
  }
  .main-nav a {
    font-size: 1rem;
  }
  .company-visual {
    height: 15rem;
    background-position: center center;
  }
  .company-header-section {
    flex-direction: column;
    padding: 3rem 1.5rem;
  }
  .company-heading-left, .company-heading-right {
    width: 100%;
  }
  .company-lead-text {
    font-size: 1.5rem;
  }
  h1.page-title-about {
    font-size: 2.2rem;
    font-weight: 500;
  }
  h2.sub_title {
    font-size: 1.2rem;
    margin: 10px 0 35px 0;
    font-weight: 500;
  }
  .about_company ul.about_strong {
    list-style: "■";
    padding: 0 0 0 5%;
  }
  .about_message {
    line-height: 1.8;
    display: block;
  }
  .about_message .left {
    width: 100%;
  }
  .about_message .right {
    width: 100%;
    text-align: center;
  }
  .about_message .right img {
    display: block;
    margin: 0 auto;
  }
  .company-table-section {
    padding: 3rem 1rem;
  }
  .company-table {
    font-size: 1rem;
  }
  .company-table th, .company-table td {
    padding: 0.75rem 1rem;
  }
  .company-history-section {
    padding: 3rem 1rem;
  }
  .history-table td {
    display: block;
    width: 100%;
    font-size: 1rem;
    padding: 1rem 0;
  }
  .history-table td:first-child {
    font-weight: bold;
    margin-bottom: 0.5rem;
  }
}