#timeline {
  background-attachment: fixed;
  background-image: url("../img/timeline/bg-header.jpg");
  background-position: center top;
  position: relative;
  background-color: #222;
  background-repeat: no-repeat;
}
#timeline .bg-text {
  background-size: 100% auto;
  padding-top: 4.375rem;
  background-image: url("../img/timeline/bg-ttl-text.png");
  background-repeat: no-repeat;
  background-position: center center;
  color: #fff;
}
@media screen and (max-width: 768px) {
  #timeline .bg-text {
    background-size: auto 110px;
  }
}
#timeline .bg-text h1 {
  font-weight: 600;
  font-size: clamp(3.125rem, 2.273rem + 3.64vw, 5rem);
  text-align: center;
  letter-spacing: 0.2em;
  line-height: 1.2;
}
@media screen and (min-width: 481px) and (max-width: 1024px) {
  #timeline .bg-text h1 {
    padding: 0 3.75rem;
  }
}
@media screen and (max-width: 480px) {
  #timeline .bg-text h1 {
    font-size: 2.5rem;
  }
}
#timeline .bg-text h1 .char {
  display: inline-block;
  will-change: transform, opacity;
}
#timeline .bg-text p {
  text-align: center;
}
#timeline .bg-text p::after {
  content: "";
  display: block;
  width: 1px;
  height: 50px;
  background: #fff;
  margin: 8px auto 0;
  transform: scaleY(0);
  transform-origin: top;
  animation: lineGrow 0.8s ease-out forwards;
}
@media screen and (max-width: 768px) {
  #timeline .bg-text p::after {
    height: 20px;
  }
}
@keyframes lineGrow {
  from {
    transform: scaleY(0);
  }
  to {
    transform: scaleY(1);
  }
}

.wrapper {
  max-width: 100%;
  margin: 0 auto;
  position: relative;
  background-color: #222;
}

.sticky-container {
  position: relative;
  z-index: 10;
  background-color: #222;
}

.sticky-block {
  display: none;
  width: 100%;
  box-sizing: border-box;
}

.content-section {
  padding: 3em 6em;
  color: #fff;
  background-color: #222;
}
@media screen and (max-width: 768px) {
  .content-section {
    padding: 0 4% 0 0;
  }
}
.content-section::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 1px;
  height: 100%;
  background: #fff;
  z-index: 0;
}
@media screen and (max-width: 768px) {
  .content-section::before {
    display: none;
  }
}

.term-link-box::before {
  content: "";
  display: block;
  height: 0;
}
.term-link-box ul {
  display: flex;
  justify-content: center;
  background: #000;
  color: #fff;
  align-items: center;
  padding: 2rem 0;
  position: relative;
}
.term-link-box ul::before {
  content: "";
  display: block;
  height: 0;
}
@media screen and (max-width: 768px) {
  .term-link-box ul {
    padding: 1.25rem 0;
  }
}
.term-link-box ul li {
  padding-right: 0.5rem;
  font-size: 1.25rem;
  font-weight: 400;
  height: 3rem;
  position: relative;
  cursor: pointer;
}
@media screen and (max-width: 768px) {
  .term-link-box ul li {
    height: 2.5rem;
    font-size: 1rem;
    font-weight: 400;
  }
}
.term-link-box ul li:hover {
  color: var(--primary-color);
}
.term-link-box ul li::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: #fff;
}
.term-link-box ul li::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
  z-index: 1;
}
.term-link-box ul li:hover::before {
  width: 100%;
}
.term-link-box ul li:not(:hover)::before {
  width: 0;
}
.term-link-box ul li.active {
  color: var(--primary-color);
  font-weight: 500;
  font-size: 1.75rem;
  line-height: 1.4;
}
@media screen and (max-width: 768px) {
  .term-link-box ul li.active {
    font-size: 1.25rem;
    font-weight: 600;
  }
}
.term-link-box ul li.active::after {
  background: var(--primary-color);
  height: 2px;
}
.term-link-box ul li.active::before {
  display: none;
}
@media screen and (max-width: 768px) {
  .term-link-box.has-margin::before {
    height: 60px;
  }
}

.ttl-year,
.h-ttl-year {
  text-align: center;
  padding: 1rem;
  color: var(--primary-color);
  font-size: 3.375rem;
  font-weight: 600;
  background-color: #222;
  line-height: 1.2;
}
.ttl-year .year-jp,
.h-ttl-year .year-jp {
  font-weight: 400;
}

.h-ttl-year {
  background-color: #3c3c3c;
  padding: 1.25rem;
}
@media screen and (max-width: 768px) {
  .h-ttl-year {
    font-size: 2.25rem;
    padding: 0.625rem;
  }
}

.timeline-inner {
  padding-top: 8em;
  padding-bottom: 4em;
  position: relative;
  background: url(../img/timeline/tl-bg-logo.png) no-repeat 90% top/24% auto;
}
@media screen and (max-width: 768px) {
  .timeline-inner {
    background: url(../img/timeline/tl-bg-logo.png) no-repeat 100% bottom/90% auto;
  }
}
.timeline-inner::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: #fff;
  z-index: 0;
}
.timeline-inner > * {
  position: relative;
  z-index: 1;
}
.timeline-inner .ttl-year {
  text-align: center;
  color: #fff;
  background: #222;
  width: 15rem;
  margin: 0 auto;
}
.timeline-inner .ttl-year .year-number {
  font-size: 3.375rem;
  line-height: 1.1;
  text-align: center;
  margin: 0 auto;
  font-family: "Roboto";
}
.timeline-inner .ttl-year .year-jp {
  display: block;
  font-size: 1rem;
  padding-bottom: 1em;
}
.timeline-inner .tl-box {
  display: flex;
  width: 100%;
}
.timeline-inner .tl-box .tl-item-list {
  width: 50%;
  position: relative;
}
.timeline-inner .tl-box .tl-item-list .tl-item,
.timeline-inner .tl-box .tl-item-list .world-event {
  position: relative;
  margin-bottom: 2em;
}
.timeline-inner .tl-box .tl-item-list .tl-item::before,
.timeline-inner .tl-box .tl-item-list .world-event::before {
  content: "";
  position: absolute;
  top: 20px;
  width: 11px;
  height: 11px;
  background-color: var(--primary-color);
  border-radius: 50%;
}
.timeline-inner .tl-box .tl-item-list.left .tl-item, .timeline-inner .tl-box .tl-item-list.left .world-event {
  margin-left: auto;
  margin-right: 2em;
}
.timeline-inner .tl-box .tl-item-list.left .tl-item::before, .timeline-inner .tl-box .tl-item-list.left .world-event::before {
  right: -2.35em;
  left: auto;
}
.timeline-inner .tl-box .tl-item-list.right .tl-item, .timeline-inner .tl-box .tl-item-list.right .world-event {
  margin-left: 2em;
  margin-right: auto;
}
.timeline-inner .tl-box .tl-item-list.right .tl-item::before, .timeline-inner .tl-box .tl-item-list.right .world-event::before {
  left: -2.35em;
  right: auto;
}
.timeline-inner .tl-box .tl-item-list .tl-item {
  max-width: 35rem;
  width: fit-content;
}
.timeline-inner .tl-box .tl-item-list .tl-item .date {
  color: var(--primary-color);
  font-size: 2rem;
}
.timeline-inner .tl-box .tl-item-list .tl-item .date span {
  font-size: 0.9375rem;
  padding-left: 0.5rem;
}
.timeline-inner .tl-box .tl-item-list .tl-item .event {
  color: #fff;
  font-size: 1.125rem;
  margin-bottom: 1em;
}
@media screen and (max-width: 768px) {
  .timeline-inner .tl-box .tl-item-list .tl-item .event {
    font-size: 1.0625rem;
  }
}
.timeline-inner .tl-box .tl-item-list .tl-item .photo-h {
  max-width: 560px;
  margin: 0 auto;
}
.timeline-inner .tl-box .tl-item-list .tl-item .photo-v {
  max-width: 320px;
  margin: 0 auto;
}
.timeline-inner .tl-box .tl-item-list .tl-item .caption {
  font-size: 14px;
  font-weight: 300;
}
.timeline-inner .tl-box .tl-item-list .world-event {
  display: block;
  width: fit-content;
}
@media screen and (max-width: 768px) {
  .timeline-inner .tl-box .tl-item-list .world-event {
    width: 90%;
  }
}
.timeline-inner .tl-box .tl-item-list .world-event .date {
  color: #fff;
  font-size: 1.875rem;
  font-weight: 500;
}
.timeline-inner .tl-box .tl-item-list .world-event .date span {
  font-size: 0.875rem;
  font-weight: 400;
}
.timeline-inner .tl-box .tl-item-list .world-event .event {
  max-width: 35rem;
  width: 100%;
  background: #ddd url(../img/timeline/icon-global.svg) no-repeat 14px 50%;
  background-size: 30px;
  padding: 1rem 1rem 1rem 3.5rem;
  font-size: 1rem;
  color: #000;
  font-weight: 500;
}
@media screen and (max-width: 768px) {
  .timeline-inner .tl-box .tl-item-list .world-event .event {
    background-size: 24px;
    padding: 0.5rem 1rem 0.5rem 3rem;
    font-size: 0.9375rem;
  }
}
.timeline-inner .tl-box .tl-item-list.right {
  margin-top: 2em;
}
@media screen and (max-width: 768px) {
  .timeline-inner {
    padding-top: 4em;
  }
  .timeline-inner::before {
    left: 1.2em;
    transform: none;
  }
  .timeline-inner .ttl-year {
    text-align: left;
    margin-left: 0.5rem;
    width: auto;
  }
  .timeline-inner .ttl-year .year-number, .timeline-inner .ttl-year .year-jp {
    text-align: left;
  }
  .timeline-inner .tl-box {
    flex-direction: column;
    margin-left: 1.7em;
  }
  .timeline-inner .tl-box .tl-item-list {
    width: 100%;
    padding: 0;
    margin: 0;
  }
  .timeline-inner .tl-box .tl-item-list.left .tl-item, .timeline-inner .tl-box .tl-item-list.left .world-event, .timeline-inner .tl-box .tl-item-list.right .tl-item, .timeline-inner .tl-box .tl-item-list.right .world-event {
    margin-left: 0.5em !important;
    margin-right: 1.5em !important;
  }
  .timeline-inner .tl-box .tl-item-list.left .tl-item::before, .timeline-inner .tl-box .tl-item-list.left .world-event::before, .timeline-inner .tl-box .tl-item-list.right .tl-item::before, .timeline-inner .tl-box .tl-item-list.right .world-event::before {
    left: -1.2em;
    right: auto;
    width: 8px;
    height: 8px;
  }
}

.mt01 {
  margin-top: 1em !important;
}

.mt02 {
  margin-top: 2em !important;
}

.mt03 {
  margin-top: 3em !important;
}

.mt04 {
  margin-top: 4em !important;
}

.mt05 {
  margin-top: 5em !important;
}

.mt06 {
  margin-top: 6em !important;
}

.mt07 {
  margin-top: 7em !important;
}

.mt08 {
  margin-top: 8em !important;
}

.mt09 {
  margin-top: 9em !important;
}

#sec2 .timeline-inner,
#sec4 .timeline-inner {
  background-position: 10% top;
}
@media screen and (max-width: 768px) {
  #sec2 .timeline-inner,
  #sec4 .timeline-inner {
    background-position: 100% bottom;
  }
}/*# sourceMappingURL=timeline.css.map */