.page-about {
  background:
    linear-gradient(rgba(155, 48, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(155, 48, 255, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  position: relative;
  overflow: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .about-hero {
  position: relative;
  padding: 36px 0 48px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 88% 8%, rgba(155, 48, 255, 0.16), transparent 52%),
    radial-gradient(ellipse at 8% 92%, rgba(255, 45, 120, 0.09), transparent 55%);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 45, 120, 0.13), transparent 65%);
  top: -120px;
  right: -140px;
  pointer-events: none;
}
.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
.page-about .about-hero__tag {
  display: inline-flex;
  align-items: center;
  color: var(--neon-cyan);
  font-size: 12px;
  letter-spacing: 0.16em;
  border: 1px solid var(--line);
  padding: 6px 12px;
  margin-bottom: 18px;
  background: rgba(10, 10, 15, 0.65);
}
.page-about .about-hero__title {
  font-size: 29px;
  line-height: 1.22;
  margin: 0 0 18px;
  text-shadow: 0 0 18px rgba(255, 45, 120, 0.32);
  letter-spacing: 0.02em;
}
.page-about .about-hero__desc {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.85;
  max-width: 56ch;
  margin-bottom: 26px;
}
.page-about .about-hero__cta {
  text-decoration: none;
}
.page-about .about-hero__figure {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line);
  background: rgba(26, 26, 36, 0.75);
  position: relative;
}
.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  filter: saturate(1.15);
}
.page-about .about-hero__figcap {
  padding: 10px 12px 4px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
}

.page-about .about-breadcrumb {
  margin-bottom: 28px;
}

.page-about .about-preview {
  margin: 4px 0 0;
  padding: 28px 0 36px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(10, 10, 15, 0.45);
}
.page-about .about-preview__head {
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
}
.page-about .about-preview__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.page-about .about-preview__link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  text-decoration: none;
  color: var(--text-primary);
  transition: border-color 0.24s ease, box-shadow 0.24s ease, transform 0.24s ease;
}
.page-about .about-preview__link:hover {
  border-color: var(--neon-pink);
  box-shadow: var(--glow-pink);
  transform: translateX(4px);
}
.page-about .about-preview__num {
  color: var(--neon-cyan);
  font-size: 13px;
}
.page-about .about-preview__title {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.page-about .about-preview__arrow {
  color: var(--neon-pink);
  font-size: 18px;
  line-height: 1;
}

.page-about .about-section {
  position: relative;
  z-index: 1;
}
.page-about .about-chapter__head {
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 8px;
  position: relative;
}
.page-about .about-chapter__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 72px;
  height: 2px;
  background: var(--neon-pink);
  box-shadow: var(--glow-pink);
}

.page-about .about-timeline {
  position: relative;
  margin-top: 44px;
  padding-left: 32px;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--neon-pink) 0%,
    var(--neon-purple) 45%,
    var(--neon-cyan) 100%
  );
  opacity: 0.35;
}
.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 30px 22px;
}
.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .about-timeline__dot {
  position: absolute;
  left: -30px;
  top: 5px;
  width: 12px;
  height: 12px;
  background: var(--bg-deep);
  border: 2px solid var(--neon-pink);
  transform: rotate(45deg);
  box-shadow: var(--glow-pink);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.page-about .about-timeline__item.is-visible .about-timeline__dot {
  box-shadow: var(--glow-pink), 0 0 36px var(--neon-purple);
  transform: rotate(45deg) scale(1.25);
}
.page-about .about-timeline__dot.is-live {
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}
.page-about .about-timeline__year {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--neon-cyan);
  margin-bottom: 6px;
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.22);
}
.page-about .about-timeline__panel {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--neon-purple);
  padding: 16px 18px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.page-about .about-timeline__panel:hover {
  border-color: var(--neon-purple);
  box-shadow: 0 0 24px rgba(155, 48, 255, 0.14);
}
.page-about .about-timeline__panel h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}
.page-about .about-timeline__panel p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.8;
}

.page-about .about-stats {
  position: relative;
  padding: 40px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(155, 48, 255, 0.1), transparent 62%),
    rgba(20, 20, 28, 0.75);
}
.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.page-about .about-stats__cell {
  text-align: center;
  padding: 18px 12px;
  border: 1px solid var(--line);
  background: rgba(10, 10, 15, 0.75);
}
.page-about .about-stats__num {
  display: block;
  font-size: 30px;
  color: var(--neon-pink);
  text-shadow: var(--glow-pink);
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}
.page-about .about-stats__label {
  font-size: 13px;
  color: var(--text-dim);
}

.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 36px;
}
.page-about .about-team__lead {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.9;
  max-width: 68ch;
  margin: 0 0 20px;
}
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.page-about .about-team__card {
  border: 1px solid var(--line);
  background: var(--bg-panel);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.page-about .about-team__card[open] {
  border-color: var(--neon-purple);
  box-shadow: var(--glow-purple);
}
.page-about .about-team__card summary {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  padding: 16px 18px;
  user-select: none;
}
.page-about .about-team__card summary::-webkit-details-marker {
  display: none;
}
.page-about .about-team__card summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1;
}
.page-about .about-team__card[open] summary::after {
  content: "−";
  color: var(--neon-pink);
}
.page-about .about-team__num {
  color: var(--neon-pink);
  font-size: 12px;
  letter-spacing: 0.06em;
}
.page-about .about-team__name {
  flex: 1;
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: 0.05em;
}
.page-about .about-team__count {
  color: var(--neon-cyan);
  font-size: 12px;
  border: 1px solid var(--line);
  padding: 4px 8px;
  white-space: nowrap;
}
.page-about .about-team__detail {
  border-top: 1px solid var(--line);
  padding: 14px 18px 18px;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.85;
}
.page-about .about-team__detail p {
  margin: 0;
}
.page-about .about-team__figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  transform: rotate(0.6deg);
  align-self: start;
}
.page-about .about-team__figure img {
  display: block;
  width: 100%;
}
.page-about .about-team__figcap {
  padding: 10px 12px 2px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

.page-about .about-review {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 36px;
}
.page-about .about-review__body {
  padding: 24px;
}
.page-about .about-review__body p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.9;
  margin: 0 0 18px;
}
.page-about .about-review__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-about .about-review__list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
}
.page-about .about-review__list li span {
  color: var(--neon-cyan);
  font-size: 12px;
  min-width: 26px;
  font-family: var(--font-mono);
}
.page-about .about-review__side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.page-about .about-review__badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  padding: 24px 14px;
  background: var(--bg-panel);
  font-size: 13px;
  color: var(--text-dim);
  text-align: center;
}
.page-about .about-review__badge span:first-child {
  font-size: 28px;
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
  margin-bottom: 6px;
}
.page-about .about-review__figure {
  margin: 28px 0 0;
  padding: 8px;
  border: 1px solid var(--line);
  background: rgba(26, 26, 36, 0.55);
}
.page-about .about-review__figure img {
  display: block;
  width: 100%;
}

.page-about .about-tech {
  margin-top: 32px;
  display: grid;
  gap: 18px;
}
.page-about .about-tech__grid {
  gap: 18px;
}
.page-about .about-tech__unit {
  padding: 24px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--neon-pink);
}
.page-about .about-tech__unit p,
.page-about .about-tech__banner p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  margin: 0 0 16px;
}
.page-about .about-tech__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-family: var(--font-head);
  letter-spacing: 0.04em;
  margin: 0 0 12px;
  color: var(--text-primary);
}
.page-about .about-tech__title span {
  color: var(--neon-pink);
  font-size: 12px;
  font-family: var(--font-mono);
}
.page-about .about-tech__banner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: space-between;
  padding: 24px;
  border: 1px solid var(--line);
}
.page-about .about-tech__banner .about-tech__title {
  margin-bottom: 8px;
}
.page-about .about-tech__banner p {
  margin-bottom: 0;
}
.page-about .about-tech__banner .btn {
  flex-shrink: 0;
  text-decoration: none;
}

.page-about .about-rail {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 60;
  display: none;
  flex-direction: column;
  gap: 8px;
}
.page-about .about-rail__link {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: rgba(10, 10, 15, 0.82);
  color: var(--text-dim);
  font-size: 12px;
  text-decoration: none;
  backdrop-filter: blur(4px);
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.page-about .about-rail__link:hover {
  color: var(--neon-pink);
  border-color: var(--neon-pink);
  box-shadow: var(--glow-pink);
}

@media (min-width: 900px) {
  .page-about .about-preview__list {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .page-about .about-stats__num {
    font-size: 34px;
  }
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .page-about .about-review {
    grid-template-columns: 1fr 220px;
  }
  .page-about .about-tech__banner {
    flex-direction: row;
    align-items: center;
  }
  .page-about .about-rail {
    display: flex;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 56px 0 72px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
  }
  .page-about .about-hero__title {
    font-size: 42px;
  }
  .page-about .about-hero__desc {
    font-size: 15px;
  }
  .page-about .about-team {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 36px;
  }
}