.page-title {
  font-size: 23px;
  font-weight: 400;
  color: #000000;
  letter-spacing: 1.92px;
  text-align: center;
  line-height: 27px;
}

.page-title span {
  display: block;
  font-size: 14px;
  margin-top: 4px;
}

.page-title-hr {
  display: block;
  width: 120px;
  height: 16px;
  margin: 16px auto 32px auto;
  border: none;
  background: url('../img/lowar-title-bottom.svg') no-repeat center center;
  background-size: contain;
}

.lower {
  padding: 80px 0;
}

.lower-intro {
  margin-bottom: 40px;
  text-align: center;
  font-size: 18px;
  color: #000000;
  letter-spacing: 1.5px;
  text-align: center;
  line-height: 36px;
}

.lower-inner {
  width: calc(100% - 48px);
  max-width: 1222px;
  margin: 0 auto;
}

.lower-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.lower-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: #fff;
  border: 1px solid #E6E6E6;
  border-radius: 6px;
  box-shadow: 6px 6px 0 0 rgba(27,47,102,0.26);
  transition: all 0.3s ease;
  text-decoration: none;
  text-align: center;
  font-size: 16px;
  letter-spacing: 1.33px;
  font-weight: bold;
}

.lower-nav-item:hover {
  background: #1B2F66;
  color: #fff;
  border-color: #1B2F66;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(27, 47, 102, 0.2);
}

.lower-nav-item .nav-title {
  font-weight: 600;
  font-size: 16px;
  line-height: 1.4;
}

.lower-nav-item i {
  font-size: 14px;
  transition: transform 0.3s ease;
}

.lower-nav-item:hover i {
  transform: translateX(3px);
}

.lower-inner h3{
  font-size: 38px;
  font-weight: 300;
  color: #1B2F66;
  letter-spacing: 2.5px;
  margin-bottom: 16px;
}

.lower-inner h4 {
  font-size: 28px;
  color: #000000;
  letter-spacing: 1.5px;
  font-weight: 300;
  margin-bottom: 16px;
}

.lower-text p {
  font-size: 18px;
  color: #000000;
  letter-spacing: 1.5px;
  line-height: 36px;
}
.lower-text p.note {
  font-size: 16px;
  color: #4A4A4A;
  letter-spacing: 1.33px;
  line-height: 30px;
}
.lower-image-c {
  text-align: center;
}
.lower-image-c img {
  width: 100%;
  height: auto;
}

.lower-box {
  background: #fff;
  border: 1px solid #979797;
  border-radius: 8px;
  padding: 25px;
  margin: 25px 0;
}

.lower-box h4 {
  margin-top: 0;
  margin-bottom: 15px;
  color: #1B2F66;
  font-size: 18px;
}

.lower-box ul {
  list-style: none;
  padding: 0;
}

.lower-box li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  line-height: 1.6;
}

.lower-box li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #1B2F66;
  font-weight: bold;
}

.lower-box hr {
  background: none;
  border: 1px solid #d2d2d2;
  margin: 20px 0;
}

.lower-box.inner-flex {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 25px;
}
.lower-box.inner-flex > *:not(.hr-line) {
  flex: 1 1 0;
}
.lower-box.inner-flex div.hr-line {
  background-color: #979797;
  width: 1px;
  flex: 0 0 auto;
}
.lower-box.inner-flex ul {
  margin-top: 12px;
}
.lower-box.inner-flex li,
.lower-box.inner-flex p {
  font-size: 16px;
  color: #000000;
}

/* About Section */
.about-text h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: #333;
}

.about-text p {
  line-height: 1.8;
  margin-bottom: 15px;
  color: #666;
}

.about-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 30px;
}

.about-table th,
.about-table td {
  padding: 15px;
  border: 1px solid #ddd;
  text-align: left;
}

.about-table th {
  background-color: #f5f5f5;
  width: 30%;
  font-weight: bold;
}

.about-table td {
  background-color: #fff;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
  .lower {
    padding: 40px 0;
  }
  .lower-inner {
    padding: 0 10px;
  }

  /* About Section */
  .about-table th,
  .about-table td {
    padding: 10px;
    font-size: 0.9rem;
  }
}

/* Lower Grid Styles */
.lower-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    margin-top: 30px;
}

.lower-card {
    padding: 25px;
}
.lower-card:nth-child(1),
.lower-card:nth-child(4) {
  border-right: 1px solid #000000;
}
.lower-card-divider {
  grid-column: 1 / -1;
  margin: 24px 0;
}


.lower-card h4 {
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 28px;
    color: #000000;
    letter-spacing: 2.33px;
}

.lower-card p {
    font-size: 18px;
    color: #000000;
    letter-spacing: 1.5px;
    line-height: 36px;
}

/* Responsive Design for Lower Grid */
@media screen and (max-width: 768px) {
    .lower-inner h3{
      font-size: 28px;
    }
    .lower-inner h4 {
      font-size: 24px;
    }
    .lower-grid {
        grid-template-columns: 1fr;
        gap: 1px;
    }
    
    .lower-card {
        padding: 20px;
    }
    
    .lower-card h4 {
        font-size: 16px;
        margin-bottom: 12px;
    }
    
    .lower-card p {
        font-size: 13px;
        line-height: 24px;
    }
    
    /* SPでhrを非表示 */
    .lower-grid .lower-card:nth-child(1),
    .lower-grid .lower-card:nth-child(4) {
      border-right: none;
    }
    .lower-card-divider {
        display: none;
    }
    .lower-box.inner-flex {
      flex-direction: column;
    }
    .lower-box.inner-flex > *:not(.hr-line) {
      flex: 0 0 auto;
    }
}

@media screen and (max-width: 480px) {
    .lower-card {
        padding: 15px;
    }
    
    .lower-card h4 {
        font-size: 15px;
        margin-bottom: 10px;
    }
    
    .lower-card p {
        font-size: 12px;
    }
}