.page-about {
  --about-hero-grid-line: rgba(255, 255, 255, 0.07);
  --about-hero-line: rgba(255, 255, 255, 0.14);
  --about-deep-bg: #071A2B;
  --about-tooltip-width: 280px;
  color: var(--lilai-gray);
}

.page-about .page-about-hero {
  background-color: var(--lilai-navy);
  color: var(--lilai-white);
  padding: 44px 0 72px;
  position: relative;
  overflow: hidden;
}

.page-about .page-about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-hero-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-hero-grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.page-about .page-about-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  background: linear-gradient(135deg, rgba(138, 43, 226, 0.45), rgba(0, 212, 255, 0.25));
  transform: rotate(16deg);
  clip-path: polygon(30% 0, 100% 18%, 82% 100%, 0 82%);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 2;
}

.page-about .breadcrumb {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.66);
}

.page-about .breadcrumb a {
  color: var(--lilai-cyan);
  text-decoration: none;
  transition: color 0.25s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--lilai-white);
}

.page-about .about-hero-grid {
  position: relative;
}

.page-about .about-hero-content {
  position: relative;
  z-index: 3;
  max-width: 780px;
}

.page-about .about-hero-kicker {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--lilai-cyan);
  margin-bottom: 14px;
}

.page-about .about-hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.1;
  margin: 0 0 18px;
  color: var(--lilai-white);
  letter-spacing: 0.02em;
}

.page-about .about-hero-lead {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
  max-width: 680px;
  margin: 0;
}

.page-about .about-hero-slogan {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--lilai-orange);
  margin: 18px 0 22px;
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 26px;
}

.page-about .about-hero-jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}

.page-about .about-hero-jumps a {
  font-size: 14px;
  color: var(--lilai-white);
  text-decoration: none;
  border: 1px solid var(--about-hero-line);
  padding: 6px 12px;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .about-hero-jumps a:hover {
  border-color: var(--lilai-orange);
  background-color: rgba(255, 90, 0, 0.12);
}

.page-about .about-hero-check {
  max-width: 720px;
  background-color: rgba(7, 26, 43, 0.6);
  border-left: 4px solid var(--lilai-orange);
  padding: 18px 20px;
  margin-top: 4px;
}

.page-about .about-hero-check-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--lilai-white);
}

.page-about .about-hero-check ol {
  margin: 0;
  padding-left: 20px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.8;
  font-size: 15px;
}

.page-about .about-hero-check a {
  color: var(--lilai-cyan);
  text-decoration: none;
}

.page-about .about-hero-check a:hover {
  color: var(--lilai-orange);
}

.page-about .about-hero-diagram {
  display: none;
}

.page-about .about-hero-diagram text {
  fill: rgba(255, 255, 255, 0.65);
  font-size: 11px;
  font-family: var(--font-mono);
}

.page-about .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 16px;
  margin-bottom: 36px;
}

.page-about .section-index {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--lilai-violet);
  font-weight: 700;
}

.page-about .section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 900;
  margin: 0;
  color: var(--lilai-navy);
  line-height: 1.3;
}

.page-about .section-desc {
  width: 100%;
  margin: 4px 0 0;
  color: var(--lilai-gray);
  line-height: 1.7;
  max-width: 640px;
}

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

.page-about .about-story {
  background-color: var(--lilai-light);
  padding: 64px 0;
}

.page-about .about-story-layout {
  display: grid;
  gap: 28px;
}

.page-about .about-story-text p {
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 16px;
}

.page-about .about-story-text p:last-child {
  margin-bottom: 0;
}

.page-about .about-story-figure {
  margin: 0;
  border: 1px solid var(--lilai-border);
  background-color: var(--lilai-white);
}

.page-about .about-story-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
}

.page-about .about-story-stats div {
  background-color: var(--lilai-white);
  border: 1px solid var(--lilai-border);
  padding: 16px 18px;
  position: relative;
}

.page-about .about-story-stats div::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--lilai-gradient);
}

.page-about .about-story-stats dt {
  font-size: 12px;
  color: var(--lilai-violet);
  letter-spacing: 0.1em;
}

.page-about .about-story-stats dd {
  margin: 4px 0 0;
  font-size: 26px;
  font-weight: 900;
  color: var(--lilai-navy);
  line-height: 1.2;
}

.page-about .about-story-stats dd:last-child {
  font-size: 14px;
  font-weight: 400;
  color: var(--lilai-gray);
  line-height: 1.6;
}

.page-about .about-milestones {
  background-color: var(--about-deep-bg);
  color: var(--lilai-white);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-milestones::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-about .about-milestones .section-title,
.page-about .about-honors .section-title {
  color: var(--lilai-white);
}

.page-about .about-milestones .section-index,
.page-about .about-honors .section-index {
  color: var(--lilai-cyan);
}

.page-about .about-milestones .section-desc,
.page-about .about-honors .section-desc {
  color: rgba(255, 255, 255, 0.66);
}

.page-about .about-milestone-orbit {
  position: relative;
  display: grid;
  gap: 14px;
  margin-bottom: 36px;
}

.page-about .about-milestone-cell {
  position: relative;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.16);
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .about-milestone-cell::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 12px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--lilai-cyan);
  border-radius: 50%;
  z-index: 2;
  pointer-events: none;
}

.page-about .about-milestone-cell:hover {
  border-color: rgba(0, 212, 255, 0.5);
  background-color: rgba(255, 255, 255, 0.08);
}

.page-about .about-milestone-cell summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 58px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 16px 16px 16px 34px;
}

.page-about .about-milestone-cell summary::-webkit-details-marker {
  display: none;
}

.page-about .about-ms-year {
  font-size: 19px;
  font-weight: 700;
  color: var(--lilai-cyan);
}

.page-about .about-ms-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--lilai-white);
  line-height: 1.4;
}

.page-about .about-ms-more {
  font-size: 18px;
  color: var(--lilai-cyan);
  transition: transform 0.25s ease, color 0.25s ease;
}

.page-about .about-milestone-cell[open] .about-ms-more {
  transform: rotate(45deg);
  color: var(--lilai-orange);
}

.page-about .about-ms-body {
  padding: 0 16px 16px;
  color: rgba(255, 255, 255, 0.74);
  line-height: 1.7;
  font-size: 14px;
}

.page-about .about-ms-body p {
  margin: 0;
}

.page-about .about-ms-coord {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--lilai-cyan);
  margin-bottom: 6px;
}

.page-about .about-milestone-figure {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-versions {
  background-color: var(--lilai-light);
  padding: 64px 0;
}

.page-about .about-version-layout {
  display: grid;
  gap: 32px;
}

.page-about .about-version-stack {
  display: grid;
  gap: 20px;
}

.page-about .about-version-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
}

.page-about .about-version-rail {
  position: relative;
  min-height: 100%;
  display: flex;
  justify-content: center;
}

.page-about .about-version-rail::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 16px;
  bottom: -20px;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(to bottom, var(--lilai-violet), var(--lilai-orange));
}

.page-about .about-version-item:last-child .about-version-rail::before {
  display: none;
}

.page-about .about-version-dot {
  position: relative;
  z-index: 2;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--lilai-orange);
  border: 3px solid var(--lilai-light);
  box-shadow: 0 0 0 2px var(--lilai-violet);
}

.page-about .about-version-card {
  background-color: var(--lilai-white);
  border: 1px solid var(--lilai-border);
  border-left: 4px solid var(--lilai-violet);
  padding: 16px 18px;
}

.page-about .about-version-current {
  border-left-color: var(--lilai-orange);
}

.page-about .about-version-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lilai-white);
  background-color: var(--lilai-violet);
  padding: 3px 8px;
  margin-bottom: 8px;
}

.page-about .about-version-current .about-version-tag {
  background-color: var(--lilai-orange);
}

.page-about .about-version-card h3 {
  font-size: 18px;
  font-weight: 900;
  margin: 0 0 8px;
  color: var(--lilai-navy);
}

.page-about .about-version-card p {
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 10px;
}

.page-about .about-version-card ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--lilai-gray);
}

.page-about .about-version-aside {
  background-color: var(--lilai-navy);
  color: var(--lilai-white);
  padding: 22px;
  position: relative;
  overflow: hidden;
}

.page-about .about-version-aside::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.page-about .about-version-aside img {
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.14);
  margin-bottom: 18px;
}

.page-about .about-version-aside h3 {
  position: relative;
  z-index: 1;
  font-size: 20px;
  font-weight: 900;
  margin: 0 0 12px;
}

.page-about .about-version-aside ul {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-version-aside li {
  position: relative;
  padding: 9px 0 9px 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .about-version-aside li::before {
  content: "→";
  position: absolute;
  left: 2px;
  color: var(--lilai-orange);
}

.page-about .about-version-link {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin-top: 18px;
  color: var(--lilai-cyan);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--lilai-cyan);
  padding-bottom: 2px;
}

.page-about .about-version-link:hover {
  color: var(--lilai-orange);
  border-color: var(--lilai-orange);
}

.page-about .about-honors {
  background: linear-gradient(135deg, var(--lilai-navy) 0%, #1d1145 100%);
  color: var(--lilai-white);
  padding: 64px 0;
}

.page-about .about-honor-grid {
  display: grid;
  gap: 16px;
}

.page-about .about-honor-card {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 24px;
}

.page-about .about-honor-iso {
  border: 2px solid var(--lilai-orange);
  background-color: rgba(255, 90, 0, 0.07);
}

.page-about .about-honor-tag {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lilai-cyan);
}

.page-about .about-honor-iso .about-honor-tag {
  color: var(--lilai-orange);
}

.page-about .about-honor-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  margin: 10px 0 8px;
  color: var(--lilai-white);
}

.page-about .about-honor-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.7;
  font-size: 15px;
}

.page-about .about-team {
  background-color: var(--lilai-light);
  padding: 64px 0;
}

.page-about .about-team-layout {
  display: grid;
  gap: 24px;
}

.page-about .about-team-copy {
  background-color: var(--lilai-white);
  border: 1px solid var(--lilai-border);
  padding: 28px;
}

.page-about .about-team-copy h3 {
  font-size: 22px;
  font-weight: 900;
  margin: 0 0 12px;
  color: var(--lilai-navy);
}

.page-about .about-team-copy p {
  line-height: 1.8;
  font-size: 16px;
  margin: 0 0 14px;
  color: var(--lilai-gray);
}

.page-about .about-team-copy p:last-child {
  margin-bottom: 0;
}

.page-about .about-team-copy a {
  color: var(--lilai-violet);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--lilai-violet);
}

.page-about .about-team-copy a:hover {
  color: var(--lilai-orange);
  border-color: var(--lilai-orange);
}

.page-about .about-team-principles {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-team-principles div {
  display: flex;
  align-items: center;
  gap: 14px;
  background-color: var(--lilai-navy);
  color: var(--lilai-white);
  padding: 16px 18px;
  font-weight: 700;
  font-size: 16px;
}

.page-about .about-team-principles .mono {
  color: var(--lilai-orange);
  font-size: 14px;
}

.page-about .about-nextlinks {
  background-color: var(--lilai-navy);
  color: var(--lilai-white);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-nextlinks::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-about .about-next-title {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  margin: 0 0 8px;
}

.page-about .about-next-desc {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  margin: 0 0 28px;
  line-height: 1.7;
}

.page-about .about-next-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 14px;
}

.page-about .about-next-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 14px;
  padding: 20px;
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--lilai-white);
  text-decoration: none;
  transition: border-color 0.25s ease, background-color 0.25s ease, transform 0.25s ease;
}

.page-about .about-next-item:hover {
  border-color: var(--lilai-orange);
  background-color: rgba(255, 90, 0, 0.12);
  transform: translateY(-2px);
}

.page-about .about-next-item .mono {
  color: var(--lilai-cyan);
  grid-row: span 2;
  align-self: center;
}

.page-about .about-next-item strong {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
  line-height: 1.4;
}

.page-about .about-next-item span:last-child {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  line-height: 1.6;
}

@media (min-width: 768px) {
  .page-about .about-story {
    padding: 72px 0;
  }

  .page-about .about-story-layout {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }

  .page-about .about-story-text {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-story-figure {
    grid-column: 2;
    grid-row: 1 / 3;
  }

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

  .page-about .about-milestones,
  .page-about .about-versions,
  .page-about .about-honors,
  .page-about .about-team,
  .page-about .about-nextlinks {
    padding: 76px 0;
  }

  .page-about .about-milestone-orbit {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .page-about .about-version-layout {
    grid-template-columns: 1fr;
  }

  .page-about .about-team-layout {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: stretch;
  }

  .page-about .about-honor-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-next-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero-diagram {
    display: block;
    position: absolute;
    right: 36px;
    bottom: 32px;
    width: 360px;
    height: 240px;
    opacity: 0.8;
    z-index: 1;
  }

  .page-about .about-hero-content {
    max-width: 840px;
  }

  .page-about .about-milestone-orbit {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .page-about .about-milestone-cell {
    min-height: 122px;
  }

  .page-about .about-milestone-cell summary {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    height: 100%;
    padding: 18px 16px 16px 34px;
  }

  .page-about .about-ms-body {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    width: var(--about-tooltip-width);
    background-color: var(--lilai-white);
    color: var(--lilai-gray);
    padding: 16px;
    border: 1px solid var(--lilai-border);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
    z-index: 30;
  }

  .page-about .about-milestone-cell:first-child .about-ms-body {
    left: 0;
    transform: none;
  }

  .page-about .about-milestone-cell:last-child .about-ms-body {
    left: auto;
    right: 0;
    transform: none;
  }

  .page-about .about-milestone-cell .about-ms-body .about-ms-coord {
    color: var(--lilai-violet);
  }

  .page-about .about-version-layout {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-about .about-next-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}