.page-about {
  background-color: var(--color-rice);
  color: var(--color-ink);
  overflow-x: hidden;
}
.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 1.5rem;
  font-size: 0.875rem;
}
.page-about .about-breadcrumb a {
  color: var(--color-lapis);
  font-weight: 500;
  text-underline-offset: 3px;
}
.page-about .about-breadcrumb .about-breadcrumb-current {
  color: var(--color-grey);
  font-weight: 600;
}
.page-about .about-hero {
  padding: clamp(3rem, 8vw, 6rem) 0 4rem;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 215, 0, 0.16), transparent 24%),
    radial-gradient(circle at 10% 90%, rgba(30, 136, 168, 0.10), transparent 30%),
    linear-gradient(135deg, var(--color-rice) 0%, var(--color-white) 55%, rgba(200, 16, 46, 0.05) 100%);
}
.page-about .about-hero-inner {
  max-width: 880px;
}
.page-about .about-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  color: var(--color-lapis);
  background: var(--color-white);
  border: 2px solid var(--color-lapis);
  padding: 0.4rem 0.8rem;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.12);
}
.page-about .about-hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 7vw, 4.75rem);
  line-height: 1.08;
  margin: 1.5rem 0 1rem;
  border-left: 8px solid var(--color-primary);
  padding-left: 0.6em;
  text-wrap: balance;
}
.page-about .about-hero-title-line {
  display: block;
}
.page-about .about-hero-title-accent {
  color: var(--color-primary);
}
.page-about .about-hero-lead {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  color: var(--color-primary);
  max-width: 44em;
  line-height: 1.5;
}
.page-about .about-hero-sub {
  color: var(--color-grey);
  line-height: 1.7;
  max-width: 52em;
}
.page-about .about-hero-cta {
  margin-top: 2rem;
}
.page-about .about-section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  position: relative;
}
.page-about .about-section + .about-section {
  border-top: 3px solid var(--color-ink);
}
.page-about .about-section-header {
  margin-bottom: 2.5rem;
}
.page-about .about-section-header .section-num {
  color: var(--color-terracotta);
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1;
  display: block;
  margin-bottom: 0.25rem;
}
.page-about .about-section-header .section-title {
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  border-bottom: 3px solid var(--color-primary);
  padding-bottom: 0.6rem;
  margin-bottom: 0.75rem;
}
.page-about .about-section-header .section-sub {
  color: var(--color-grey);
}
.page-about .about-milestone {
  background: linear-gradient(180deg, var(--color-rice) 0%, var(--color-white) 100%);
}
.page-about .about-milestone-banner {
  position: relative;
  margin: 2rem 0 1.5rem;
  border: var(--border-w) solid var(--color-ink);
  box-shadow: var(--shadow-brutal);
  overflow: hidden;
  background: var(--color-white);
}
.page-about .about-milestone-banner img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 180px;
  object-fit: cover;
}
.page-about .about-banner-caption {
  position: absolute;
  inset: auto 0 0 0;
  background: linear-gradient(90deg, var(--color-lapis) 0%, rgba(0, 90, 141, 0.1) 100%);
  color: var(--color-white);
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  z-index: 1;
}
.page-about .about-banner-caption-note {
  position: absolute;
  inset: 0;
  background: rgba(0, 90, 141, 0.94);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  text-align: center;
  font-size: 1rem;
  line-height: 1.6;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 2;
}
.page-about .about-milestone-banner:hover .about-banner-caption-note,
.page-about .about-milestone-banner:focus-within .about-banner-caption-note {
  opacity: 1;
}
.page-about .about-year-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.25rem 0 2.25rem;
}
.page-about .about-year-jump {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-lapis);
  border: 2px solid var(--color-lapis);
  background: var(--color-white);
  padding: 0.4rem 0.9rem;
  box-shadow: 2px 3px 0 rgba(0, 0, 0, 0.12);
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.page-about .about-year-jump:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 5px 0 rgba(0, 0, 0, 0.14);
}
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 2rem;
  padding-left: 2rem;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 6px;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--color-lapis) 0%, var(--color-gold) 100%);
}
.page-about .about-milestone-card {
  position: relative;
  background: var(--color-white);
  border: var(--border-w) solid var(--color-ink);
  box-shadow: var(--shadow-brutal);
  padding: 1.25rem 1.25rem 1.5rem;
  scroll-margin-top: 2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.page-about .about-milestone-card::before {
  content: "";
  position: absolute;
  top: 24px;
  left: -30px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-gold);
  border: 3px solid var(--color-lapis);
}
.page-about .about-milestone-card:hover {
  transform: translateY(-4px);
  box-shadow: 6px 9px 0 rgba(200, 16, 46, 0.14);
}
.page-about .about-milestone-year {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 2.25rem;
  line-height: 1;
  color: var(--color-terracotta);
  border-bottom: 2px dashed rgba(184, 92, 60, 0.35);
  padding-bottom: 0.5rem;
  margin-bottom: 0.75rem;
}
.page-about .about-milestone-title {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}
.page-about .about-milestone-body p {
  font-size: 0.95rem;
  color: var(--color-grey);
  line-height: 1.7;
}
.page-about .about-milestone-body ul {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}
.page-about .about-milestone-body li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--color-ink);
}
.page-about .about-milestone-body li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0.35em;
  font-size: 0.7rem;
  color: var(--color-gold);
}
.page-about .about-operation {
  background: var(--color-white);
}
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}
.page-about .about-stat {
  background: var(--color-white);
  border: var(--border-w) solid var(--color-ink);
  box-shadow: var(--shadow-brutal);
  padding: 1.5rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-about .about-stat::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 6px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-gold) 100%);
}
.page-about .about-stat-num {
  display: block;
  font-size: clamp(1.8rem, 5vw, 2.75rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.page-about .about-stat-label {
  font-size: 0.875rem;
  color: var(--color-grey);
  font-weight: 500;
}
.page-about .about-service-grid {
  display: grid;
  gap: 2rem;
  background: var(--color-rice);
  border: var(--border-w) solid var(--color-ink);
  box-shadow: var(--shadow-brutal);
  padding: 1.5rem;
}
.page-about .about-service-text h3 {
  color: var(--color-primary);
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}
.page-about .about-service-text p {
  color: var(--color-grey);
  line-height: 1.7;
}
.page-about .about-service-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}
.page-about .about-service-tag {
  background: var(--color-white);
  border: 2px solid var(--color-ink);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.12);
  padding: 0.75rem 0.9rem;
  font-weight: 700;
  font-size: 0.9rem;
  text-align: center;
  transition: background 0.2s ease, color 0.2s ease;
}
.page-about .about-service-tag:hover {
  background: var(--color-primary);
  color: var(--color-white);
}
.page-about .about-security {
  background: linear-gradient(180deg, var(--color-white) 0%, var(--color-rice) 100%);
}
.page-about .about-security-layout {
  display: grid;
  gap: 2rem;
}
.page-about .about-security-copy {
  border-left: 6px solid var(--color-gold);
  background: rgba(255, 255, 255, 0.6);
  padding: 1.25rem 1.25rem 1.25rem 1.75rem;
}
.page-about .about-security-copy h3 {
  color: var(--color-lapis);
  margin-top: 1.25rem;
}
.page-about .about-security-copy h3:first-child {
  margin-top: 0;
}
.page-about .about-security-copy p {
  color: var(--color-grey);
  line-height: 1.7;
}
.page-about .about-security-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}
.page-about .about-security-list li {
  background: var(--color-white);
  border: 2px solid var(--color-ink);
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
}
.page-about .about-security-figure {
  margin: 0;
  border: var(--border-w) solid var(--color-ink);
  box-shadow: var(--shadow-brutal);
  background: var(--color-white);
  padding: 0.75rem;
  text-align: center;
}
.page-about .about-security-figure img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-security-figure figcaption {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-grey);
}
.page-about .about-qinghai {
  background: linear-gradient(180deg, var(--color-rice) 0%, var(--color-white) 100%);
}
.page-about .about-qinghai-layout {
  display: grid;
  gap: 2rem;
}
.page-about .about-qinghai-quote {
  background: var(--color-white);
  border: var(--border-w) solid var(--color-ink);
  border-left: 8px solid var(--color-lake);
  box-shadow: var(--shadow-brutal);
  padding: 1.5rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-grey);
}
.page-about .about-qinghai-quote p {
  margin: 0;
}
.page-about .about-qinghai-quote blockquote {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-ink);
  border-top: 2px dashed var(--color-lake);
  padding-top: 1rem;
}
.page-about .about-geo-tags {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 0.75rem;
}
.page-about .about-geo-tag {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-lake);
  border: 2px solid var(--color-lake);
  background: var(--color-white);
  padding: 0.5rem 0.9rem;
  box-shadow: 3px 3px 0 rgba(30, 136, 168, 0.25);
}
.page-about .about-team {
  background: var(--color-white);
}
.page-about .about-team-layout {
  display: grid;
  gap: 2rem;
}
.page-about .about-team-content p {
  color: var(--color-grey);
  line-height: 1.7;
}
.page-about .about-team-content ul {
  list-style: none;
  margin: 1rem 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
.page-about .about-team-content li {
  background: var(--color-rice);
  border: 2px solid var(--color-ink);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.12);
  padding: 0.6rem 0.9rem;
  font-weight: 600;
}
.page-about .about-team-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.page-about .about-team-figure {
  margin: 0;
  border: var(--border-w) solid var(--color-ink);
  box-shadow: var(--shadow-brutal);
  background: var(--color-white);
  padding: 0.75rem;
  text-align: center;
}
.page-about .about-team-figure img {
  max-width: 100%;
  height: auto;
}
.page-about .about-team-figure figcaption {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-grey);
}
.page-about .about-epilogue {
  padding: 3rem 0 4rem;
  background: var(--color-primary);
  color: var(--color-white);
  border-top: var(--border-w) solid var(--color-ink);
}
.page-about .about-epilogue-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}
.page-about .about-epilogue p {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 900;
  line-height: 1.3;
  margin: 0;
}
.page-about .about-epilogue a {
  background: var(--color-gold);
  color: var(--color-ink);
  border: var(--border-w) solid var(--color-ink);
  box-shadow: var(--shadow-btn);
}
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-service-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 2rem;
  }
  .page-about .about-service-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .about-security-layout {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }
  .page-about .about-qinghai-layout {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }
  .page-about .about-team-layout {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .page-about .about-epilogue-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .page-about .about-timeline {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem 3rem;
    padding-left: 0;
  }
  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
  }
  .page-about .about-milestone-card::before {
    top: 30px;
  }
  .page-about .about-milestone-card:nth-child(odd)::before {
    left: auto;
    right: -30px;
  }
  .page-about .about-milestone-card:nth-child(even)::before {
    left: 18px;
  }
}
@media (min-width: 1024px) {
  .page-about .about-section-header {
    margin-bottom: 3.5rem;
  }
  .page-about .about-team-layout {
    gap: 3rem;
  }
  .page-about .about-service-list {
    grid-template-columns: repeat(3, 1fr);
  }
}