.page-about {
  --about-cyan: #00E5FF;
  --about-purple: #A855F7;
  --about-gold: #FFD700;
  position: relative;
  padding-bottom: 80px;
  background:
    radial-gradient(ellipse at 88% 10%, rgba(168,85,247,.15), transparent 45%),
    radial-gradient(ellipse at 6% 68%, rgba(0,229,255,.08), transparent 38%),
    var(--color-night);
}
.page-about .about-crumb {
  max-width: var(--container);
  margin: 0 auto;
  padding: 34px 20px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-muted);
}
.page-about .about-crumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color .2s ease;
}
.page-about .about-crumb a:hover {
  color: var(--color-cyan);
}
.page-about .about-crumb__sep {
  color: rgba(176,176,176,.55);
}
.page-about .about-crumb__current {
  color: var(--color-paper);
}
.page-about .about-hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 60px 20px 0;
  display: grid;
  gap: 36px;
  position: relative;
  overflow: hidden;
}
.page-about .about-hero__ghost {
  position: absolute;
  right: -30px;
  top: -50px;
  font-family: var(--font-heading);
  font-size: clamp(120px, 24vw, 260px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(168,85,247,.22);
  pointer-events: none;
  z-index: 0;
  user-select: none;
}
.page-about .about-hero__copy {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__copy .lead {
  margin: 18px 0 16px;
}
.page-about .about-hero__story {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 22px;
  max-width: 640px;
}
.page-about .about-hero__taglist {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.page-about .about-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid rgba(0,229,255,.45);
  border-radius: 999px;
  font-size: 13px;
  color: var(--color-cyan);
  background: rgba(0,229,255,.08);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.page-about .about-hero__media {
  position: relative;
  z-index: 1;
  margin: 0;
}
.page-about .about-hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.page-about .about-hero__caption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--color-muted);
  text-align: right;
  letter-spacing: .04em;
}
.page-about .display-title__sep {
  font-weight: 300;
  color: var(--color-muted);
  margin: 0 6px;
}
.page-about .display-title__accent {
  display: block;
  color: var(--color-cyan);
}
.page-about .about-milestones {
  max-width: var(--container);
  margin: 0 auto;
  padding: 88px 20px 0;
}
.page-about .about-milestones__head {
  margin-bottom: 44px;
}
.page-about .about-milestones__head .lead {
  max-width: 680px;
  margin-top: 14px;
}
.page-about .milestone-layout {
  display: grid;
  gap: 40px;
  align-items: start;
}
.page-about .milestone-timeline {
  position: relative;
  padding-left: 26px;
}
.page-about .milestone-timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--about-cyan), var(--about-purple) 52%, var(--about-gold));
  opacity: .7;
}
.page-about .milestone-item {
  position: relative;
  margin-bottom: 28px;
}
.page-about .milestone-item::before {
  content: '';
  position: absolute;
  left: -23px;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-night);
  border: 3px solid var(--about-cyan);
  box-shadow: 0 0 12px rgba(0,229,255,.6);
}
.page-about .milestone-item--v2::before {
  border-color: var(--about-purple);
  box-shadow: 0 0 12px rgba(168,85,247,.6);
}
.page-about .milestone-item--v3::before {
  border-color: var(--about-gold);
  box-shadow: 0 0 12px rgba(255,215,0,.55);
}
.page-about .milestone-item__mark {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.page-about .milestone-item__ver {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--about-cyan);
  background: rgba(0,229,255,.1);
  border: 1px solid rgba(0,229,255,.28);
  border-radius: var(--radius-sm);
  padding: 2px 10px;
}
.page-about .milestone-item--v2 .milestone-item__ver {
  color: var(--about-purple);
  background: rgba(168,85,247,.12);
  border-color: rgba(168,85,247,.32);
}
.page-about .milestone-item--v3 .milestone-item__ver {
  color: var(--about-gold);
  background: rgba(255,215,0,.1);
  border-color: rgba(255,215,0,.3);
}
.page-about .milestone-item__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-paper);
}
.page-about .milestone-item__card {
  margin: 0;
}
.page-about .milestone-item__card p {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 0;
}
.page-about .milestone-item__points {
  margin: 14px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--color-muted);
}
.page-about .milestone-item__points li::marker {
  color: var(--about-cyan);
}
.page-about .milestone-item--v2 .milestone-item__points li::marker {
  color: var(--about-purple);
}
.page-about .milestone-item--v3 .milestone-item__points li::marker {
  color: var(--about-gold);
}
.page-about .milestone-aside {
  margin: 0;
}
.page-about .milestone-aside__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(168,85,247,.24);
  box-shadow: var(--shadow);
}
.page-about .milestone-aside__caption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--color-muted);
  text-align: left;
  letter-spacing: .04em;
}
.page-about .about-library {
  max-width: var(--container);
  margin: 0 auto;
  padding: 88px 20px 0;
  display: grid;
  gap: 36px;
}
.page-about .about-library__copy .lead {
  margin: 16px 0;
}
.page-about .about-library__copy p:not(.lead) {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 20px;
}
.page-about .about-library__stats {
  display: grid;
  gap: 14px;
}
.page-about .about-library__stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 22px;
  border-left: 3px solid var(--about-purple);
}
.page-about .about-library__stat:nth-child(2) {
  border-left-color: var(--about-cyan);
}
.page-about .about-library__stat:nth-child(3) {
  border-left-color: var(--about-gold);
}
.page-about .about-library__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--color-paper);
}
.page-about .about-library__desc {
  font-size: 14px;
  color: var(--color-muted);
}
.page-about .about-service {
  max-width: var(--container);
  margin: 88px auto 0;
  padding-left: 20px;
  padding-right: 20px;
  display: grid;
  gap: 0;
}
.page-about .about-service__media {
  margin: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  overflow: hidden;
  line-height: 0;
}
.page-about .about-service__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 240px;
  object-fit: cover;
}
.page-about .about-service__content {
  background: var(--color-deep);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 36px 24px 40px;
  position: relative;
  overflow: hidden;
}
.page-about .about-service__content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 4px;
  background: linear-gradient(to right, var(--about-cyan), var(--about-purple), var(--about-gold));
}
.page-about .about-service__inner {
  position: relative;
  z-index: 1;
}
.page-about .about-service__inner .lead {
  margin: 16px 0 26px;
}
.page-about .about-service__list {
  display: grid;
  gap: 12px;
  margin-bottom: 28px;
}
.page-about .about-service__item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  padding: 16px 18px;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-sm);
}
.page-about .about-service__index {
  font-size: 14px;
  color: var(--about-gold);
  font-weight: 700;
}
.page-about .about-service__title {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-paper);
  margin-bottom: 4px;
}
.page-about .about-service__desc {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
}
.page-about .about-service__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
@media (min-width: 880px) {
  .page-about .about-crumb {
    padding-top: 40px;
  }
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
    align-items: center;
    gap: 60px;
    padding-top: 80px;
  }
  .page-about .about-hero__ghost {
    font-size: 280px;
    right: -40px;
    top: -70px;
  }
  .page-about .about-milestones {
    padding-top: 120px;
  }
  .page-about .milestone-layout {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 56px;
  }
  .page-about .milestone-item {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 24px;
    margin-bottom: 32px;
  }
  .page-about .milestone-item__mark {
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    border-right: 2px solid rgba(255,255,255,.1);
    padding-right: 20px;
    margin-bottom: 0;
  }
  .page-about .milestone-aside {
    position: sticky;
    top: 110px;
  }
  .page-about .about-library {
    grid-template-columns: 1fr 320px;
    align-items: center;
    gap: 72px;
    padding-top: 120px;
  }
  .page-about .about-service {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 540px;
    align-items: center;
    margin-top: 120px;
    padding-left: 0;
    padding-right: 0;
  }
  .page-about .about-service__media {
    position: absolute;
    inset: 0;
    z-index: 0;
    border-radius: 0;
  }
  .page-about .about-service__img {
    width: 100%;
    height: 100%;
    min-height: 540px;
    object-fit: cover;
  }
  .page-about .about-service__media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(10,11,18,.96) 0%, rgba(10,11,18,.78) 45%, rgba(10,11,18,.32) 100%);
  }
  .page-about .about-service__content {
    position: relative;
    z-index: 1;
    background: transparent;
    border-radius: 0;
    padding: 72px 52px;
    max-width: 720px;
  }
  .page-about .about-service__content::before {
    left: 52px;
    top: 0;
    width: 160px;
  }
  .page-about .about-service__item {
    background: rgba(17,22,41,.5);
    backdrop-filter: blur(6px);
  }
}