/* Unit history timeline — home + about */
.home-timeline {
  --tl-rail-y: 50%;
  --tl-stem: 3.25rem;
  --tl-dot: 0.95rem;
  --tl-ease: cubic-bezier(0.22, 1, 0.36, 1);
  margin-top: 0.25rem;
}
.home-timeline__board {
  position: relative;
  margin-top: 1.75rem;
  min-height: 15.5rem;
  padding: 0 0.25rem;
}
.home-timeline__rail {
  position: absolute;
  left: 0;
  right: 0;
  top: var(--tl-rail-y);
  height: 2px;
  transform: translateY(-50%) scaleX(0);
  transform-origin: left center;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(var(--sf-red-rgb), 0.35) 4%,
    rgba(var(--sf-red-rgb), 0.85) 20%,
    rgba(var(--sf-red-rgb), 0.85) 80%,
    rgba(var(--sf-red-rgb), 0.35) 96%,
    transparent 100%
  );
  pointer-events: none;
  z-index: 0;
  transition: transform 0.9s var(--tl-ease);
}
.home-timeline.is-armed .home-timeline__rail {
  transform: translateY(-50%) scaleX(1);
}
.home-timeline__glow {
  --gx: 50%;
  --gy: 50%;
  --path-x: 50%;
  --path-y: 50%;
  --path-len: 0px;
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.home-timeline__glow.is-visible {
  opacity: 1;
}
.home-timeline__glow.is-fading {
  opacity: 0;
  transition: opacity 0.28s ease;
}
.home-timeline__glow-core {
  position: absolute;
  left: var(--gx);
  top: var(--gy);
  width: 1rem;
  height: 1rem;
  margin: -0.5rem 0 0 -0.5rem;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff 0%, var(--sf-red) 42%, rgba(var(--sf-red-rgb), 0.2) 72%, transparent 76%);
  box-shadow:
    0 0 10px 3px rgba(var(--sf-red-rgb), 0.95),
    0 0 26px 10px rgba(var(--sf-red-rgb), 0.45),
    0 0 40px 16px rgba(var(--sf-red-rgb), 0.2);
  transition:
    left 0.58s var(--tl-ease),
    top 0.58s var(--tl-ease),
    transform 0.35s ease,
    box-shadow 0.35s ease;
  will-change: left, top;
}
.home-timeline__glow.is-traveling .home-timeline__glow-core {
  transform: scale(1.15);
  box-shadow:
    0 0 14px 5px rgba(var(--sf-red-rgb), 1),
    0 0 32px 14px rgba(var(--sf-red-rgb), 0.55),
    0 0 48px 20px rgba(var(--sf-red-rgb), 0.25);
}
.home-timeline__glow-path {
  position: absolute;
  left: var(--path-x);
  top: var(--path-y);
  width: var(--path-len);
  height: 8px;
  margin-top: -4px;
  border-radius: 999px;
  transform-origin: left center;
  transform: rotate(var(--path-angle, 0rad)) scaleX(0);
  background: linear-gradient(
    90deg,
    rgba(var(--sf-red-rgb), 0) 0%,
    rgba(var(--sf-red-rgb), 0.95) 35%,
    rgba(255, 255, 255, 0.85) 50%,
    rgba(var(--sf-red-rgb), 0.95) 65%,
    rgba(var(--sf-red-rgb), 0) 100%
  );
  filter: blur(2.5px);
  opacity: 0;
  pointer-events: none;
}
.home-timeline__glow.is-traveling .home-timeline__glow-path {
  opacity: 1;
  animation: tl-glow-path 0.58s var(--tl-ease) forwards;
}
@keyframes tl-glow-path {
  0% {
    transform: rotate(var(--path-angle, 0rad)) scaleX(0);
    opacity: 0.2;
  }
  35% {
    opacity: 1;
  }
  100% {
    transform: rotate(var(--path-angle, 0rad)) scaleX(1);
    opacity: 0.35;
  }
}
.home-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 0.35rem;
  position: relative;
  z-index: 1;
  min-height: 15.5rem;
}
.home-timeline__item {
  flex: 1 1 0;
  min-width: 0;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transform: translateY(1.1rem);
  transition:
    opacity 0.55s var(--tl-ease),
    transform 0.6s var(--tl-ease);
  transition-delay: calc(var(--i, 0) * 90ms + 120ms);
}
.home-timeline.is-armed .home-timeline__item {
  opacity: 1;
  transform: translateY(0);
}
.home-timeline__node {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(100%, 9.75rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  text-align: center;
}
.home-timeline__item--below .home-timeline__node {
  transform: translate(-50%, calc(var(--tl-dot) / -2));
}
.home-timeline__item--above .home-timeline__node {
  transform: translate(-50%, calc(-100% + var(--tl-dot) / 2));
}
.home-timeline__stem {
  width: 2px;
  height: var(--tl-stem);
  background: rgba(var(--sf-red-rgb), 0.9);
  flex-shrink: 0;
  transform-origin: center top;
  transition: transform 0.35s var(--tl-ease), opacity 0.3s ease;
}
.home-timeline__item--above .home-timeline__stem {
  transform-origin: center bottom;
}
.home-timeline__node:hover .home-timeline__stem,
.home-timeline__item.is-open .home-timeline__stem {
  transform: scaleY(1.12);
}
.home-timeline__dot {
  width: var(--tl-dot);
  height: var(--tl-dot);
  border-radius: 50%;
  border: 2px solid rgba(var(--sf-red-rgb), 0.95);
  background: var(--sf-bg, #0c0e10);
  box-shadow: 0 0 0 4px rgba(var(--sf-red-rgb), 0.14);
  flex-shrink: 0;
  margin: 0;
  transition:
    transform 0.35s var(--tl-ease),
    background 0.25s ease,
    box-shadow 0.35s ease,
    border-color 0.25s ease;
  z-index: 2;
  animation: tl-dot-pulse 2.8s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * 0.18s);
}
.home-timeline__node:hover .home-timeline__dot,
.home-timeline__item.is-open .home-timeline__dot {
  background: var(--sf-red);
  transform: scale(1.22);
  border-color: #fff;
  box-shadow:
    0 0 0 6px rgba(var(--sf-red-rgb), 0.28),
    0 0 18px rgba(var(--sf-red-rgb), 0.45);
  animation: none;
}
.home-timeline__meta {
  display: grid;
  gap: 0.2rem;
  padding: 0.4rem 0.2rem;
  max-width: 100%;
  opacity: 0.82;
  transition:
    opacity 0.3s ease,
    transform 0.35s var(--tl-ease),
    color 0.25s ease;
}
.home-timeline__item--below .home-timeline__meta {
  padding-top: 0.15rem;
}
.home-timeline__item--above .home-timeline__meta {
  padding-bottom: 0.15rem;
}
.home-timeline__node:hover .home-timeline__meta,
.home-timeline__item.is-open .home-timeline__meta {
  opacity: 1;
}
.home-timeline__item--below .home-timeline__node:hover .home-timeline__meta,
.home-timeline__item--below.is-open .home-timeline__meta {
  transform: translateY(3px);
}
.home-timeline__item--above .home-timeline__node:hover .home-timeline__meta,
.home-timeline__item--above.is-open .home-timeline__meta {
  transform: translateY(-3px);
}
.home-timeline__date {
  font-family: var(--sf-display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--sf-red) 60%, #fff);
  transition: letter-spacing 0.3s ease, color 0.25s ease;
}
.home-timeline__node:hover .home-timeline__date,
.home-timeline__item.is-open .home-timeline__date {
  letter-spacing: 0.18em;
  color: color-mix(in srgb, var(--sf-red) 40%, #fff);
}
.home-timeline__title {
  font-family: var(--sf-display);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--sf-ink, #fff);
}
.home-timeline__node:focus-visible {
  outline: none;
}
.home-timeline__node:focus-visible .home-timeline__dot {
  box-shadow: 0 0 0 6px rgba(var(--sf-red-rgb), 0.35);
  animation: none;
}
.home-timeline__stage {
  position: relative;
  margin-top: 1.35rem;
  min-height: 0;
  max-height: 0;
  overflow: hidden;
  border-radius: var(--sf-radius, 16px);
  border: 1px solid transparent;
  opacity: 0;
  transform: translateY(12px) scale(0.985);
  transition:
    max-height 0.5s var(--tl-ease),
    opacity 0.35s ease,
    transform 0.45s var(--tl-ease),
    border-color 0.3s ease,
    box-shadow 0.4s ease;
}
.home-timeline__stage.is-open {
  max-height: 28rem;
  opacity: 1;
  transform: translateY(0) scale(1);
  border-color: rgba(var(--sf-red-rgb), 0.35);
  min-height: 12rem;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}
.home-timeline__stage-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.home-timeline__stage-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: #12151a;
  opacity: 0;
  transform: scale(1.06);
  filter: saturate(0.85);
  transition:
    opacity 0.55s ease,
    transform 0.75s var(--tl-ease),
    filter 0.45s ease;
  will-change: opacity, transform;
}
.home-timeline__stage-bg.is-active {
  opacity: 0.9;
  transform: scale(1);
  filter: saturate(1);
  z-index: 1;
}
.home-timeline__stage-bg.is-enter {
  opacity: 0.9;
  transform: scale(1);
  filter: saturate(1);
  z-index: 2;
}
.home-timeline__stage-veil {
  position: absolute;
  inset: 0;
  z-index: 3;
  background:
    linear-gradient(90deg, rgba(8, 10, 12, 0.88) 0%, rgba(8, 10, 12, 0.55) 48%, rgba(8, 10, 12, 0.35) 100%),
    linear-gradient(180deg, rgba(8, 10, 12, 0.2), rgba(8, 10, 12, 0.55));
  pointer-events: none;
}
.home-timeline__stage-copy {
  position: relative;
  z-index: 4;
  padding: 1.35rem 1.4rem 1.5rem;
  max-width: 40rem;
}
.home-timeline__stage-date,
.home-timeline__stage-title,
.home-timeline__stage-body {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.4s ease,
    transform 0.45s var(--tl-ease);
}
.home-timeline__stage.is-open:not(.is-swapping) .home-timeline__stage-date {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.08s;
}
.home-timeline__stage.is-open:not(.is-swapping) .home-timeline__stage-title {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.14s;
}
.home-timeline__stage.is-open:not(.is-swapping) .home-timeline__stage-body {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.2s;
}
.home-timeline__stage.is-swapping .home-timeline__stage-date,
.home-timeline__stage.is-swapping .home-timeline__stage-title,
.home-timeline__stage.is-swapping .home-timeline__stage-body {
  opacity: 0;
  transition-duration: 0.22s;
  transition-delay: 0s;
}
.home-timeline__stage.is-swapping.to-next .home-timeline__stage-date,
.home-timeline__stage.is-swapping.to-next .home-timeline__stage-title,
.home-timeline__stage.is-swapping.to-next .home-timeline__stage-body {
  transform: translateX(-14px) translateY(0);
}
.home-timeline__stage.is-swapping.to-prev .home-timeline__stage-date,
.home-timeline__stage.is-swapping.to-prev .home-timeline__stage-title,
.home-timeline__stage.is-swapping.to-prev .home-timeline__stage-body {
  transform: translateX(14px) translateY(0);
}
.home-timeline__stage.is-entering.to-next .home-timeline__stage-date,
.home-timeline__stage.is-entering.to-next .home-timeline__stage-title,
.home-timeline__stage.is-entering.to-next .home-timeline__stage-body {
  transform: translateX(16px) translateY(0);
  opacity: 0;
  transition: none;
}
.home-timeline__stage.is-entering.to-prev .home-timeline__stage-date,
.home-timeline__stage.is-entering.to-prev .home-timeline__stage-title,
.home-timeline__stage.is-entering.to-prev .home-timeline__stage-body {
  transform: translateX(-16px) translateY(0);
  opacity: 0;
  transition: none;
}
.home-timeline__stage.is-entering.is-settle .home-timeline__stage-date,
.home-timeline__stage.is-entering.is-settle .home-timeline__stage-title,
.home-timeline__stage.is-entering.is-settle .home-timeline__stage-body {
  opacity: 1;
  transform: translateX(0) translateY(0);
  transition:
    opacity 0.4s ease,
    transform 0.5s var(--tl-ease);
}
.home-timeline__stage.is-entering.is-settle .home-timeline__stage-date {
  transition-delay: 0.04s;
}
.home-timeline__stage.is-entering.is-settle .home-timeline__stage-title {
  transition-delay: 0.1s;
}
.home-timeline__stage.is-entering.is-settle .home-timeline__stage-body {
  transition-delay: 0.16s;
}
.home-timeline__stage-date {
  margin: 0 0 0.3rem;
  font-family: var(--sf-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--sf-red) 55%, #fff);
}
.home-timeline__stage-title {
  margin: 0 0 0.55rem;
  font-family: var(--sf-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  color: #fff;
}
.home-timeline__stage-body {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.6;
  white-space: pre-wrap;
}

@keyframes tl-dot-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 4px rgba(var(--sf-red-rgb), 0.14);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(var(--sf-red-rgb), 0.28);
  }
}

@media (max-width: 760px) {
  .home-timeline__board {
    min-height: 0;
    padding: 0;
  }
  .home-timeline__rail {
    left: 0.7rem;
    right: auto;
    top: 0.75rem;
    bottom: 0.75rem;
    width: 2px;
    height: auto;
    transform: scaleY(0);
    transform-origin: top center;
    background: linear-gradient(
      180deg,
      rgba(var(--sf-red-rgb), 0.2) 0%,
      rgba(var(--sf-red-rgb), 0.9) 12%,
      rgba(var(--sf-red-rgb), 0.9) 88%,
      rgba(var(--sf-red-rgb), 0.2) 100%
    );
    transition: transform 0.85s var(--tl-ease);
  }
  .home-timeline.is-armed .home-timeline__rail {
    transform: scaleY(1);
  }
  .home-timeline__list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    min-height: 0;
    gap: 0.75rem;
    padding: 0;
  }
  .home-timeline__item {
    flex: none;
    display: block;
    width: 100%;
    padding-left: 2.05rem;
    transform: translateX(-0.75rem);
  }
  .home-timeline.is-armed .home-timeline__item {
    transform: translateX(0);
  }
  .home-timeline__item--above .home-timeline__node,
  .home-timeline__item--below .home-timeline__node {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    max-width: none;
    transform: none;
    display: block;
    text-align: left;
  }
  .home-timeline__stem {
    display: none !important;
  }
  .home-timeline__dot {
    position: absolute;
    left: -1.58rem;
    top: 1.15rem;
    margin: 0;
    transform: none;
  }
  .home-timeline__node:hover .home-timeline__dot,
  .home-timeline__item.is-open .home-timeline__dot {
    transform: scale(1.12);
  }
  .home-timeline__meta {
    display: block;
    width: 100%;
    max-width: none;
    padding: 0.85rem 1rem;
    border: 1px solid var(--sf-line, rgba(255, 255, 255, 0.12));
    border-radius: var(--sf-radius-sm, 10px);
    background:
      linear-gradient(135deg, rgba(var(--sf-red-rgb), 0.1), transparent 55%),
      rgba(255, 255, 255, 0.03);
    transition:
      opacity 0.3s ease,
      transform 0.35s var(--tl-ease),
      border-color 0.25s ease,
      background 0.25s ease;
  }
  .home-timeline__item--above .home-timeline__meta,
  .home-timeline__item--below .home-timeline__meta {
    padding: 0.85rem 1rem;
  }
  .home-timeline__item--below .home-timeline__node:hover .home-timeline__meta,
  .home-timeline__item--below.is-open .home-timeline__meta,
  .home-timeline__item--above .home-timeline__node:hover .home-timeline__meta,
  .home-timeline__item--above.is-open .home-timeline__meta {
    transform: translateX(3px);
  }
  .home-timeline__item.is-open .home-timeline__meta {
    border-color: rgba(var(--sf-red-rgb), 0.5);
    background:
      linear-gradient(135deg, rgba(var(--sf-red-rgb), 0.18), transparent 55%),
      rgba(255, 255, 255, 0.04);
  }
  .home-timeline__title {
    font-size: 0.98rem;
  }
  .home-timeline__stage.is-open {
    max-height: 36rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-timeline__rail,
  .home-timeline__item,
  .home-timeline__dot,
  .home-timeline__stem,
  .home-timeline__meta,
  .home-timeline__date,
  .home-timeline__stage,
  .home-timeline__stage-bg,
  .home-timeline__stage-date,
  .home-timeline__stage-title,
  .home-timeline__stage-body,
  .home-timeline__glow,
  .home-timeline__glow-core,
  .home-timeline__glow-path {
    transition: none !important;
    animation: none !important;
  }
  .home-timeline__glow.is-traveling .home-timeline__glow-path {
    opacity: 0;
  }
  .home-timeline:not(.is-armed) .home-timeline__item,
  .home-timeline .home-timeline__item {
    opacity: 1;
    transform: none;
  }
  .home-timeline__rail,
  .home-timeline.is-armed .home-timeline__rail {
    transform: translateY(-50%) scaleX(1);
  }
  @media (max-width: 760px) {
    .home-timeline__rail,
    .home-timeline.is-armed .home-timeline__rail {
      transform: scaleY(1);
    }
  }
  .home-timeline__stage-bg {
    opacity: 0;
    transform: none;
    filter: none;
  }
  .home-timeline__stage-bg.is-active {
    opacity: 0.9;
  }
  .home-timeline__stage-date,
  .home-timeline__stage-title,
  .home-timeline__stage-body {
    opacity: 1;
    transform: none;
  }
}