.background-image-bottom {
  top: calc(100% - 994px);
}

.title-background img {
  width: 100%;
}

.content {
  background: var(--translucent-white);
  backdrop-filter: blur(10px);
  padding: 120px 20%;
  width: 100%;
  margin: 0;
}

.content-header {
  display: flex;
  gap: 28px;
  align-items: center;
}

.header-index {
  display: flex;
  width: 48px;
  height: 48px;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  border-radius: 50px;
  background: var(--vivid-orange);
  color: var(--white);
  text-align: center;
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-style: normal;
  font-weight: 600;
  line-height: 115%;
}

.content-header h3 {
  color: #191C20;
  font-family: "Noto Sans JP", sans-serif;
  font-size: 24px;
  font-style: normal;
  font-weight: 700;
  line-height: 155%;
}

.content-item {
  border-bottom: 1px solid var(--grayline);
  padding-bottom: 80px;
}

.content-item:not(:first-child) {
  margin-top: 80px;
}

.content-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.timeline-container {
  display: flex;
  flex-direction: column;
}

.timeline-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.timeline-wrapper:not(:first-child) .text-year, .timeline-wrapper:not(:first-child) .line , .timeline-wrapper:not(:first-child) .timeline-content {
  margin-top: 40px;
}

.text-year {
  color: var(--blackheading);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 20px;
  font-style: normal;
  font-weight: 700;
  line-height: 160%;
}

.text-month {
  width: 32px;
  color: var(--blackheading);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-style: normal;
  font-weight: 500;
  line-height: 200%;
  flex: 0 0 32px;
}

.time-hook {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.text-content {
  color: var(--blackheading);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-style: normal;
  font-weight: 500;
  line-height: 200%;
}

.timeline-content-container {
  width: 100%;
}

.timeline-content-wrapper {
  display: flex;
  gap: 20px;
  width: 100%;
}

.timeline-content-wrapper:not(:first-child) .line, .timeline-content-wrapper:not(:first-child) .timeline-content {
  margin-top: 12px;
}

.timeline {
  width: 32px;
  display: flex;
  justify-content: center;
  position: relative;
  flex: 0 0 32px;
}

.timeline:before {
  content: '';
  width: 2px;
  height: 100%;
  background-color: var(--grayline);
  position: absolute;
  left: calc(50% - 1px);
  z-index: -1;
}

.timeline-container .timeline-wrapper:first-child .timeline-content-wrapper:first-child .line {
  background: linear-gradient(0deg, transparent 50%, var(--white) 50%);
}

.line {
  width: 100%;
  height: 32px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.timeline-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 8px;
  height: 8px;
  border-radius: 6px;
  background-color: var(--vivid-orange);
}

.timeline-content {
  flex: 1 1 auto;
}

.time-note {
  background: var(--graybackground);
  width: 100%;
  padding: 12px;
  position: relative;
  margin-top: 8px;
}

.time-note:before {
  content: '';
  width: 20px;
  height: 20px;
  background: url(/about/img/check.svg) no-repeat;
  background-size: 100% 100%;
  position: absolute;
  top: calc(50% - 9px);
  left: 10px;
}

.time-note p {
  margin-left: 26px;
  color: var(--blackheading);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 15px;
  font-style: normal;
  font-weight: 400;
  line-height: 180%;
}

.grid-container .link-group:first-child .information-wrapper {
  background-image: url(/about/img/overview_img01.png);
}

.grid-container .link-group:last-child .information-wrapper {
  background-image: url(/img/group_img01.jpg);
}

@media screen and (max-width: 600px) {
  .background-image-top-sp {
    top: 49px;
  }

  .content {
    padding: 60px 20px;
  }

  .content-header {
    gap: 20px;
  }

  .content-header h3 {
    font-size: 20px;
    letter-spacing: 0.8px;
  }

  .timeline-wrapper, .timeline-content-wrapper, .time-hook {
    gap: 6px;
  }

  .timeline-wrapper:not(:first-child) .text-year, .timeline-wrapper:not(:first-child) .line, .timeline-wrapper:not(:first-child) .timeline-content {
    margin-top: 20px;
  }

  .time-note:before {
    height: 27px;
    top: 12px;
  }

  .content-item {
    padding-bottom: 48px;
  }

  .content-item:not(:first-child) {
    margin-top: 48px;
  }
}