.page-about {
  --about-section-gap: clamp(4.5rem, 10vw, 8.5rem);
  --about-grid-line: rgba(75, 0, 130, 0.06);
  --about-dash: rgba(75, 0, 130, 0.35);
  position: relative;
  background:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  overflow: hidden;
}

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

.page-about .text-accent {
  color: var(--color-red);
}

.page-about .breadcrumbs {
  margin-bottom: 3rem;
}

.page-about .breadcrumbs__sep {
  margin: 0 0.5rem;
  color: var(--color-grid);
}

.page-about .section-head__note {
  margin-top: 1rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-slate);
}

/* 品牌故事 */
.page-about .about-hero {
  position: relative;
  padding: 2.5rem 0 var(--about-section-gap);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 3rem;
}

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

.page-about .about-hero__main::before {
  content: "";
  display: block;
  width: 5rem;
  height: 4px;
  background: var(--color-red);
  margin-bottom: 2rem;
  transform: skewX(-12deg);
}

.page-about .about-hero__main h1 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2.5rem, 8vw, 6rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0.75rem 0 1.5rem;
  color: var(--color-ink);
}

.page-about .about-hero__lead {
  max-width: 32em;
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-slate);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-grid);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-slate);
}

.page-about .about-hero__meta span::before {
  content: "//";
  margin-right: 0.4rem;
  color: var(--color-indigo);
  font-weight: 800;
}

.page-about .about-hero__visual {
  position: relative;
}

.page-about .about-hero__frame {
  position: relative;
  border: 2px solid var(--color-indigo);
  padding: 0.75rem;
  background: var(--color-white);
}

.page-about .about-hero__frame::after {
  content: "FIG.01 — STADIUM / NIGHT";
  position: absolute;
  left: -2px;
  bottom: -2rem;
  padding: 0.3rem 0.75rem;
  background: var(--color-white);
  border: 1px solid var(--color-grid);
  border-top: none;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--color-slate);
}

.page-about .about-hero__frame img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-hero__stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 2.5rem;
}

.page-about .stat-block {
  margin: 0;
  padding: 1.25rem 1rem;
  background: var(--color-wine);
  color: var(--color-white);
  text-align: center;
}

.page-about .stat-block__value {
  display: block;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.75rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-about .stat-block__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  opacity: 0.85;
}

/* 发展历程 */
.page-about .about-milestones {
  background: var(--color-light-gray);
  padding: var(--about-section-gap) 0;
}

.page-about .about-milestones__head {
  margin-bottom: 3.5rem;
}

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--color-ink);
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: calc(6.5rem + 0.625rem);
  top: 0;
  bottom: 0;
  border-left: 2px dashed var(--about-dash);
  opacity: 0.7;
}

.page-about .timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1.25rem;
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--color-grid);
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(6.5rem + 0.625rem - 5px);
  top: 2.75rem;
  width: 10px;
  height: 10px;
  background: var(--color-red);
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-red), 0 0 0 4px var(--color-white);
  z-index: 1;
}

.page-about .timeline__year {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.5rem, 5vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-deep-teal);
}

.page-about .timeline__card {
  background: var(--color-white);
  border: 1px solid var(--color-grid);
  padding: 1.25rem 1.5rem;
  box-shadow: 4px 4px 0 rgba(75, 0, 130, 0.06);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .timeline__item:hover .timeline__card,
.page-about .timeline__item:focus-within .timeline__card {
  border-color: var(--color-indigo);
  box-shadow: 6px 6px 0 rgba(75, 0, 130, 0.12);
  transform: translateX(2px);
}

.page-about .timeline__card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-ink);
}

.page-about .timeline__card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-slate);
}

.page-about .about-milestones__footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  font-size: 0.9375rem;
  color: var(--color-slate);
}

/* 团队与文化 */
.page-about .about-team {
  padding: var(--about-section-gap) 0;
}

.page-about .about-team__grid {
  display: grid;
  gap: 3rem;
}

.page-about .about-team h2,
.page-about .about-tech h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0.5rem 0 1.5rem;
  color: var(--color-ink);
}

.page-about .about-team__content > p,
.page-about .about-tech__content > p {
  max-width: 36em;
  line-height: 1.8;
  color: var(--color-slate);
}

.page-about .about-team__list {
  list-style: none;
  margin: 2rem 0;
  padding: 0;
}

.page-about .about-team__list li {
  position: relative;
  padding-left: 2rem;
  padding-bottom: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-ink);
}

.page-about .about-team__list li::before {
  content: "//";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-red);
  font-weight: 800;
}

.page-about .about-team__note {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  max-width: 28rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-wine);
  color: var(--color-white);
}

.page-about .about-team__note-label {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  opacity: 0.85;
}

.page-about .about-team__count {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 2.75rem;
  line-height: 1;
  color: var(--color-yellow);
}

.page-about .about-team__note-unit {
  font-size: 0.8125rem;
  opacity: 0.85;
}

.page-about .about-team__visual::before,
.page-about .about-tech__visual::before {
  content: "FIG.02 — TEAM / WORKSPACE";
  display: block;
  width: fit-content;
  margin-bottom: 0.5rem;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--color-slate);
}

.page-about .about-team__visual img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--color-grid);
}

/* 荣誉与资质 */
.page-about .about-honors {
  background: var(--color-deep-teal);
  padding: var(--about-section-gap) 0;
  color: var(--color-white);
}

.page-about .about-honors .eyebrow {
  color: rgba(255, 255, 255, 0.75);
}

.page-about .about-honors .eyebrow::before {
  background: var(--color-yellow);
}

.page-about .about-honors h2 {
  color: var(--color-white);
}

.page-about .about-honors .section-head__note {
  color: rgba(255, 255, 255, 0.7);
}

.page-about .about-honors__grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 3rem;
}

.page-about .honor-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.75rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.page-about .honor-card:hover,
.page-about .honor-card:focus-within {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-yellow);
  transform: translateY(-4px);
}

.page-about .honor-card__badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 9rem;
  margin-bottom: 1.5rem;
  padding: 0.85rem 1rem;
  background: var(--color-wine);
  color: var(--color-white);
  font-family: var(--font-heading);
}

.page-about .honor-card__badge--yellow {
  background: var(--color-yellow);
  color: var(--color-ink);
}

.page-about .honor-card__badge--green {
  background: var(--color-green);
  color: var(--color-ink);
}

.page-about .honor-card__code {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.page-about .honor-card__num {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-about .honor-card h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-white);
}

.page-about .honor-card p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
}

.page-about .honor-card__detail {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.85);
  transition: max-height 0.35s var(--ease-out), opacity 0.3s ease, margin-top 0.35s var(--ease-out);
}

.page-about .honor-card:hover .honor-card__detail,
.page-about .honor-card:focus-within .honor-card__detail {
  max-height: 6rem;
  opacity: 1;
  margin-top: 1rem;
}

@media (hover: none) {
  .page-about .honor-card__detail {
    max-height: 6rem;
    opacity: 1;
    margin-top: 1rem;
  }
}

/* 技术实力 */
.page-about .about-tech {
  padding: var(--about-section-gap) 0;
}

.page-about .about-tech__grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.page-about .about-tech__visual::before {
  content: "FIG.03 — DATA / ENGINE";
}

.page-about .about-tech__visual img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--color-grid);
  box-shadow: 0.75rem 0.75rem 0 rgba(75, 0, 130, 0.08);
}

.page-about .about-tech__stats {
  margin: 2.5rem 0;
}

.page-about .tech-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-grid);
}

.page-about .tech-stat__label {
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: var(--color-slate);
}

.page-about .tech-stat__value {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.375rem;
  color: var(--color-ink);
}

/* 底部联系 */
.page-about .about-cta {
  padding: var(--about-section-gap) 0;
}

.page-about .about-cta__inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(2rem, 6vw, 4rem);
  background: var(--color-wine);
  color: var(--color-white);
  overflow: hidden;
}

.page-about .about-cta__inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-red);
}

.page-about .about-cta__inner::after {
  content: "";
  position: absolute;
  right: -3rem;
  bottom: -3rem;
  width: 8rem;
  height: 8rem;
  border: 2px solid rgba(255, 255, 255, 0.18);
  transform: rotate(45deg);
}

.page-about .about-cta .eyebrow {
  color: rgba(255, 255, 255, 0.75);
}

.page-about .about-cta .eyebrow::before {
  background: var(--color-yellow);
}

.page-about .about-cta h2 {
  margin: 0.5rem 0 0.75rem;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.75rem, 4vw, 3rem);
  line-height: 1.1;
  color: var(--color-white);
}

.page-about .about-cta p {
  max-width: 32em;
  margin: 0;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
}

.page-about .about-cta__btn {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.page-about .about-cta .btn--ghost {
  border-color: var(--color-white);
  color: var(--color-white);
}

@media (min-width: 768px) {
  .page-about .timeline__item {
    grid-template-columns: 10rem 1fr;
    gap: 2rem;
  }

  .page-about .timeline::before {
    left: calc(10rem + 1rem);
  }

  .page-about .timeline__item::before {
    left: calc(10rem + 1rem - 5px);
    top: 3.25rem;
  }

  .page-about .tech-stat {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
  }

  .page-about .stat-block {
    padding: 1.5rem 1rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 4rem;
    align-items: center;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
  }

  .page-about .about-tech__grid {
    grid-template-columns: 1fr 1.1fr;
    gap: 4rem;
  }

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

  .page-about .about-milestones__head {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: end;
  }

  .page-about .about-milestones__head .section-head__note {
    margin: 0;
    max-width: 26em;
    justify-self: end;
    text-align: right;
  }
}