.page-about {
  --about-gold-line: rgba(212, 175, 55, 0.38);
  --about-gold-soft: rgba(212, 175, 55, 0.16);
  --about-gold-deep: rgba(212, 175, 55, 0.68);
  --about-red-soft: rgba(196, 43, 29, 0.2);
  --about-panel: #151A26;
  position: relative;
  background: var(--bg-void);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 42px 0 38px;
  background: var(--bg-void);
  border-bottom: 1px solid var(--about-gold-line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 16% 28%, rgba(168, 85, 247, 0.18), transparent 44%),
    radial-gradient(ellipse at 84% 18%, rgba(78, 227, 255, 0.14), transparent 38%),
    linear-gradient(135deg, rgba(212, 175, 55, 0.08), transparent 56%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.24;
  z-index: 0;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero-kicker {
  margin: 28px 0 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--blue-neon);
}

.page-about .about-hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 200;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}

.page-about .about-hero-subtitle {
  margin: 10px 0 0;
  font-size: 18px;
  font-weight: 400;
  color: var(--gold);
  letter-spacing: 0.12em;
}

.page-about .about-hero-lead {
  margin: 18px 0 0;
  max-width: 420px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-hero-stat {
  padding: 18px 16px;
  border-left: 1px solid var(--about-gold-line);
  background: linear-gradient(145deg, rgba(21, 26, 38, 0.82), rgba(21, 26, 38, 0.3));
}

.page-about .about-hero-num {
  display: block;
  font-family: var(--font-numeric);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-hero-suffix {
  margin-left: 2px;
  font-size: 22px;
  font-weight: 400;
  color: var(--text-primary);
}

.page-about .about-hero-label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--text-secondary);
}

.page-about .about-hero-scroll {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 30px;
  padding-bottom: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--about-gold-line);
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.page-about .about-hero-scroll:hover,
.page-about .about-hero-scroll:focus-visible {
  color: var(--blue-neon);
  border-color: var(--blue-neon);
}

.page-about .about-hero-scroll::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-top: 32px;
  padding-bottom: 64px;
}

.page-about .about-sidebar {
  order: -1;
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: 1px solid var(--about-gold-line);
  padding-bottom: 14px;
}

.page-about .about-sidebar::-webkit-scrollbar {
  display: none;
}

.page-about .about-sidebar-inner {
  display: flex;
  gap: 8px;
  min-width: max-content;
}

.page-about .about-sidebar-title {
  margin-right: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--text-secondary);
  white-space: nowrap;
  align-self: center;
}

.page-about .about-sidebar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid var(--about-gold-line);
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .about-sidebar-link:hover,
.page-about .about-sidebar-link:focus-visible {
  color: var(--text-primary);
  border-color: var(--about-gold-deep);
  background-color: var(--about-gold-soft);
}

.page-about .about-sidebar-link.is-active {
  color: var(--gold);
  border-color: var(--gold);
}

.page-about .about-sidebar-num {
  font-family: var(--font-numeric);
  font-size: 11px;
  color: var(--gold);
}

.page-about .about-main {
  min-width: 0;
}

.page-about .section {
  scroll-margin-top: 120px;
  margin-bottom: 72px;
}

.page-about .about-editorial-lead {
  margin: 22px 0 0;
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-primary);
}

.page-about .about-editorial p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.page-about .about-editorial-note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-editorial-note-label {
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-on-gold);
  background: var(--gold);
}

.page-about .about-editorial-note-text {
  font-size: 13px;
  color: var(--blue-neon);
  letter-spacing: 0.1em;
}

.page-about .about-journey-intro {
  max-width: 520px;
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.page-about .about-journey-figure {
  margin: 28px 0 24px;
  padding: 0;
  overflow: hidden;
  background: var(--about-panel);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.page-about .about-journey-image,
.page-about .about-eco-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  object-position: center top;
}

.page-about .about-timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
  position: relative;
}

.page-about .about-timeline-item {
  position: relative;
  padding-left: 24px;
  border-left: 1px dashed var(--about-gold-deep);
}

.page-about .about-timeline-dot {
  position: absolute;
  left: -5px;
  top: 2px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--about-gold-soft);
  transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

.page-about .about-timeline-item:hover .about-timeline-dot,
.page-about .about-timeline-item:focus-within .about-timeline-dot {
  box-shadow: 0 0 0 8px var(--about-gold-soft), 0 0 18px var(--gold);
  background: var(--blue-neon);
}

.page-about .about-timeline-year {
  display: block;
  font-family: var(--font-numeric);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--gold);
  transition: color 0.25s ease;
}

.page-about .about-timeline-item:hover .about-timeline-year {
  color: var(--blue-neon);
}

.page-about .about-timeline-title {
  margin: 6px 0 4px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
}

.page-about .about-timeline-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.page-about .about-eco-intro,
.page-about .about-facts-intro {
  margin: 18px 0 0;
  max-width: 560px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.page-about .about-eco-figure {
  margin: 28px 0 24px;
  padding: 0;
  overflow: hidden;
  background: var(--about-panel);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

.page-about .about-eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-eco-panel {
  position: relative;
  padding: 24px 20px 22px;
  background: var(--about-panel);
  border: 1px solid rgba(212, 175, 55, 0.22);
}

.page-about .about-eco-panel:hover {
  border-color: var(--about-gold-deep);
}

.page-about .about-eco-panel-tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-on-gold);
  background: linear-gradient(120deg, var(--gold), rgba(212, 175, 55, 0.72));
}

.page-about .about-eco-panel-title {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 600;
  color: var(--text-primary);
}

.page-about .about-eco-chip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-eco-device-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 6px;
}

.page-about .about-eco-device-list li {
  padding: 6px 14px;
  border: 1px solid var(--about-gold-line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-primary);
}

.page-about .about-eco-panel-brief {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-about .about-eco-detail {
  margin-top: 16px;
  border-top: 1px dashed rgba(212, 175, 55, 0.34);
}

.page-about .about-eco-detail summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  transition: color 0.25s ease;
}

.page-about .about-eco-detail summary::-webkit-details-marker {
  display: none;
}

.page-about .about-eco-detail summary::after {
  content: "+";
  font-family: var(--font-numeric);
  font-size: 18px;
  line-height: 1;
  color: var(--gold);
  transition: transform 0.3s ease, color 0.25s ease;
}

.page-about .about-eco-detail[open] summary::after {
  transform: rotate(45deg);
}

.page-about .about-eco-detail summary:hover,
.page-about .about-eco-detail summary:focus-visible {
  color: var(--blue-neon);
}

.page-about .about-eco-detail-text {
  margin: 4px 0 0;
  padding-bottom: 6px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-about .about-facts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 30px;
  border-top: 1px solid var(--about-gold-line);
  border-left: 1px solid var(--about-gold-line);
}

.page-about .about-fact-cell {
  position: relative;
  padding: 26px 18px 22px;
  border-right: 1px solid var(--about-gold-line);
  border-bottom: 1px solid var(--about-gold-line);
  background: linear-gradient(150deg, rgba(21, 26, 38, 0.86), rgba(21, 26, 38, 0.2));
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.page-about .about-fact-cell:hover {
  background: linear-gradient(150deg, rgba(21, 26, 38, 1), rgba(21, 26, 38, 0.62));
  transform: translateY(-2px);
}

.page-about .about-fact-num {
  display: block;
  font-family: var(--font-numeric);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-fact-suffix {
  margin-left: 2px;
  font-size: 18px;
  font-weight: 400;
  color: var(--text-primary);
}

.page-about .about-fact-label {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
}

.page-about .about-more {
  margin-top: 16px;
  padding: 28px 24px;
  border: 1px solid var(--about-gold-line);
  background:
    linear-gradient(120deg, rgba(212, 175, 55, 0.1), transparent 45%),
    var(--about-panel);
}

.page-about .about-more-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 300;
  color: var(--text-primary);
}

.page-about .about-more-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 560px) {
  .page-about .about-hero {
    padding: 56px 0 48px;
  }

  .page-about .about-hero-title {
    font-size: 48px;
  }

  .page-about .about-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-hero-num {
    font-size: 52px;
  }

  .page-about .about-facts-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 860px) {
  .page-about .about-timeline {
    position: relative;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    padding-top: 22px;
    margin-top: 20px;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    top: 22px;
    left: 8%;
    right: 8%;
    height: 1px;
    background: repeating-linear-gradient(90deg, rgba(212, 175, 55, 0.6) 0 6px, transparent 6px 12px);
    z-index: 0;
  }

  .page-about .about-timeline-item {
    padding-left: 0;
    border-left: none;
    padding-right: 14px;
  }

  .page-about .about-timeline-dot {
    top: 0;
    left: 0;
    width: 11px;
    height: 11px;
    margin-top: -5px;
    z-index: 1;
  }

  .page-about .about-timeline-body {
    margin-top: 20px;
    padding-top: 14px;
    border-top: 1px solid rgba(212, 175, 55, 0.24);
    transition: border-color 0.25s ease, transform 0.25s ease;
  }

  .page-about .about-timeline-item:hover .about-timeline-body {
    border-color: var(--about-gold-deep);
    transform: translateY(-2px);
  }

  .page-about .about-journey-image,
  .page-about .about-eco-image {
    max-height: 460px;
    object-position: center;
  }

  .page-about .about-eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--about-gold-line);
    border-left: 1px solid var(--about-gold-line);
  }

  .page-about .about-eco-panel {
    border: none;
    border-right: 1px solid var(--about-gold-line);
    border-bottom: 1px solid var(--about-gold-line);
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: 184px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 56px;
  }

  .page-about .about-sidebar {
    order: 0;
    position: sticky;
    top: 24px;
    padding: 8px 0 0;
    border-bottom: none;
    overflow: visible;
  }

  .page-about .about-sidebar-inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    min-width: 0;
  }

  .page-about .about-sidebar-title {
    margin: 0 0 12px;
    font-size: 12px;
    letter-spacing: 0.3em;
  }

  .page-about .about-sidebar-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    border: none;
    border-left: 2px solid transparent;
    font-size: 13px;
    white-space: normal;
  }

  .page-about .about-sidebar-link:hover,
  .page-about .about-sidebar-link:focus-visible {
    background: transparent;
    color: var(--text-primary);
    border-left-color: var(--about-gold-deep);
  }

  .page-about .about-sidebar-link.is-active {
    border-left-color: var(--gold);
    color: var(--gold);
    background: linear-gradient(90deg, var(--about-gold-soft), transparent);
  }

  .page-about .about-sidebar-num {
    min-width: 20px;
  }

  .page-about .about-fact-num {
    font-size: 36px;
  }
}

@keyframes aboutRise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-about .about-hero-stat,
.page-about .about-timeline-item,
.page-about .about-fact-cell {
  animation: aboutRise 0.5s ease both;
}

.page-about .about-hero-stat:nth-child(2) {
  animation-delay: 0.08s;
}

.page-about .about-hero-stat:nth-child(3) {
  animation-delay: 0.16s;
}

.page-about .about-timeline-item:nth-child(2) {
  animation-delay: 0.06s;
}

.page-about .about-timeline-item:nth-child(3) {
  animation-delay: 0.12s;
}

.page-about .about-timeline-item:nth-child(4) {
  animation-delay: 0.18s;
}

.page-about .about-timeline-item:nth-child(5) {
  animation-delay: 0.24s;
}

.page-about .about-fact-cell:nth-child(2) {
  animation-delay: 0.05s;
}

.page-about .about-fact-cell:nth-child(3) {
  animation-delay: 0.1s;
}

.page-about .about-fact-cell:nth-child(4) {
  animation-delay: 0.15s;
}

.page-about .about-fact-cell:nth-child(5) {
  animation-delay: 0.2s;
}

.page-about .about-fact-cell:nth-child(6) {
  animation-delay: 0.25s;
}