.page-about {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(196, 154, 108, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(196, 154, 108, 0.10) 1px, transparent 1px);
  background-size: 26px 26px;
  color: var(--ink);
  font-family: var(--body-font);
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
  overflow-x: clip;
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--copper);
  padding: 0.25rem 0 1rem;
}
.page-about .breadcrumbs a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--copper);
}
.page-about .breadcrumbs a:hover {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
}

.page-about .story-hero {
  position: relative;
  text-align: center;
  padding: 3rem 0 2rem;
  border-bottom: 1px solid rgba(196, 154, 108, 0.4);
  margin-bottom: 3rem;
}
.page-about .story-hero__eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 0.5rem;
}
.page-about .story-hero__title {
  font-family: var(--heading-font);
  font-size: clamp(2.75rem, 10vw, 5.5rem);
  line-height: 1;
  color: var(--cinnabar);
  margin: 0.1rem 0 0.75rem;
  letter-spacing: 0.02em;
}
.page-about .story-hero__mark {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 0.35rem 0.75rem;
  margin: 0.25rem auto 1.5rem;
  padding: 0.5rem 1.5rem;
  border-top: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
}
.page-about .story-hero__brand {
  font-family: var(--heading-font);
  font-size: 2rem;
  color: var(--vermilion);
}
.page-about .story-hero__product {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.page-about .story-hero__lead {
  max-width: 72ch;
  margin: 0 auto;
  line-height: 1.9;
  color: var(--deep-ink);
}

.page-about section {
  max-width: 1080px;
  margin: 0 auto 3.5rem;
}

.page-about .section-heading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.page-about .section-heading--center {
  justify-content: center;
}
.page-about .section-heading__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--gold);
  color: var(--cinnabar);
  font-family: var(--heading-font);
  font-size: 1.15rem;
  box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px var(--gold);
}
.page-about .section-heading h2 {
  font-family: var(--heading-font);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--ink);
  margin: 0;
}

.page-about .origin-grid {
  display: grid;
  gap: 1.75rem;
  align-items: center;
}
.page-about .origin-photo {
  position: relative;
}
.page-about .origin-photo img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--copper);
  padding: 6px;
  background: var(--paper);
  box-shadow: 8px 8px 0 rgba(196, 154, 108, 0.22);
}
.page-about .origin-photo__caption {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--copper);
  letter-spacing: 0.04em;
}
.page-about .origin-copy p {
  line-height: 1.9;
  margin: 0 0 1rem;
}
.page-about .origin-copy p:last-child {
  margin-bottom: 0;
}

.page-about .philosophy-lead {
  max-width: 60ch;
  margin: 0 auto 1.75rem;
  text-align: center;
  font-size: 1.05rem;
}
.page-about .philosophy-grid {
  display: grid;
  gap: 1.25rem;
}
.page-about .philosophy-card {
  position: relative;
  border: 1px dashed var(--copper);
  background: rgba(255, 248, 225, 0.72);
  padding: 1.75rem 1.4rem 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.page-about .philosophy-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-slight);
}
.page-about .philosophy-card__index {
  display: inline-block;
  font-family: var(--heading-font);
  font-size: 2.2rem;
  color: var(--copper);
  line-height: 1;
  margin-bottom: 0.75rem;
}
.page-about .philosophy-card__seal {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  border: 2px solid var(--cinnabar);
  color: var(--cinnabar);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--heading-font);
  font-size: 1.35rem;
  transform: rotate(8deg);
  background: rgba(255, 215, 0, 0.12);
}
.page-about .philosophy-card h3 {
  font-size: 1.25rem;
  color: var(--deep-ink);
  margin: 0 0 0.5rem;
}
.page-about .philosophy-card p {
  margin: 0;
  line-height: 1.8;
  font-size: 0.95rem;
}

.page-about .timeline-intro {
  color: var(--copper);
  margin: 0 0 2rem;
}
.page-about .timeline-scroll {
  position: relative;
  margin-top: 1rem;
}
.page-about .timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 0.5rem 1rem;
  padding: 1.4rem 0;
  border-bottom: 1px dashed rgba(196, 154, 108, 0.32);
}
.page-about .timeline-item__rail {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  gap: 0.25rem;
}
.page-about .timeline-item__index {
  font-family: var(--heading-font);
  font-size: 1.1rem;
  color: var(--cinnabar);
  background: rgba(255, 215, 0, 0.16);
  border: 1px solid var(--gold);
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.page-about .timeline-item__year {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .timeline-item__content {
  min-width: 0;
}
.page-about .timeline-item__content h3 {
  margin: 0 0 0.4rem;
  font-size: 1.2rem;
  color: var(--deep-ink);
}
.page-about .timeline-item__summary {
  margin: 0 0 0.6rem;
  line-height: 1.7;
  font-size: 0.95rem;
}
.page-about .timeline-item__trigger {
  display: inline-block;
  margin-top: 0.25rem;
  padding: 0;
  border: 0;
  background: none;
  color: var(--cinnabar);
  font-family: var(--body-font);
  font-size: 0.9rem;
  text-decoration: none;
  border-bottom: 1px solid var(--cinnabar);
  padding-bottom: 1px;
  cursor: pointer;
}
.page-about .timeline-item__trigger:hover {
  color: var(--vermilion);
  border-color: var(--vermilion);
}
.page-about .timeline-item__details {
  margin-top: 0.75rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--gold);
  background: var(--gray-paper);
  font-size: 0.93rem;
  line-height: 1.8;
}
.page-about .timeline-item__details p {
  margin: 0;
}

.page-about .cert-grid {
  display: grid;
  gap: 1.5rem;
}
.page-about .cert-card {
  border: 1px solid var(--copper);
  background: rgba(255, 248, 225, 0.7);
  padding: 1.75rem 1.25rem 1.5rem;
  text-align: center;
}
.page-about .cert-card__medal {
  width: 180px;
  height: 180px;
  margin: 0 auto 1.1rem;
  border-radius: 50%;
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 4px var(--paper), 0 0 0 5px var(--gold), 0 4px 10px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}
.page-about .cert-card__medal img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-about .cert-card__medal--text,
.page-about .cert-card__medal--award {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cinnabar);
  font-family: var(--heading-font);
  font-size: 1.6rem;
  line-height: 1.3;
  text-align: center;
  background: var(--paper);
}
.page-about .cert-card__medal--award {
  color: var(--vermilion);
  background: rgba(255, 215, 0, 0.14);
}
.page-about .cert-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.1rem;
  color: var(--deep-ink);
}
.page-about .cert-card p {
  margin: 0 auto;
  max-width: 32ch;
  line-height: 1.75;
  font-size: 0.9rem;
  color: var(--ink);
}

.page-about .team-grid {
  display: grid;
  gap: 1.75rem;
  align-items: center;
}
.page-about .team-photo img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--copper);
  padding: 6px;
  background: var(--paper);
  box-shadow: -8px 8px 0 rgba(196, 154, 108, 0.22);
}
.page-about .team-copy p {
  line-height: 1.9;
  margin: 0 0 1rem;
}
.page-about .team-copy ul {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}
.page-about .team-copy li {
  position: relative;
  padding-left: 2rem;
  line-height: 1.8;
}
.page-about .team-copy li::before {
  content: "财";
  position: absolute;
  left: 0;
  top: 0.25rem;
  color: var(--cinnabar);
  border: 1px solid var(--cinnabar);
  border-radius: 50%;
  width: 1.4rem;
  height: 1.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-family: var(--heading-font);
  background: rgba(255, 215, 0, 0.12);
}
.page-about .team-copy strong {
  color: var(--cinnabar);
}

.page-about .next-links {
  border-top: 1px solid var(--copper);
  padding-top: 1.5rem;
}
.page-about .next-links h2 {
  font-family: var(--heading-font);
  font-size: 1.6rem;
  margin: 0 0 0.75rem;
}
.page-about .next-links p {
  line-height: 1.9;
}
.page-about .next-links a {
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}
.page-about .next-links a:hover {
  color: var(--vermilion);
}

@media (min-width: 720px) {
  .page-about {
    padding: 2rem 2rem 5rem;
  }
  .page-about .story-hero {
    padding: 5rem 0 3rem;
    margin-bottom: 4rem;
  }
  .page-about .origin-grid {
    grid-template-columns: 380px 1fr;
  }
  .page-about .philosophy-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .timeline-item {
    grid-template-columns: 160px 1fr;
    gap: 0 2rem;
  }
  .page-about .timeline-item__rail {
    flex-direction: row;
    justify-content: flex-end;
    align-items: baseline;
    gap: 0.75rem;
    border-right: 2px solid var(--gold);
    padding-right: 1.25rem;
  }
  .page-about .timeline-item__year {
    font-size: 2rem;
  }
  .page-about .timeline-item__details {
    max-width: 80%;
  }
  .page-about .cert-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .team-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .page-about .story-hero__lead {
    font-size: 1.1rem;
  }
  .page-about section {
    margin-bottom: 5rem;
  }
}