.page-about {
  --about-ink: #081428;
  --about-deep: #050D1F;
  --about-card: #0F1F3D;
  --about-card-soft: #132648;
  --about-line: #2E3A59;
  --about-orange: #FF5C00;
  --about-neon: #00FFA3;
  --about-muted: #B8C4D6;
  position: relative;
  color: #ffffff;
  background-color: var(--about-deep);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  margin-bottom: 2rem;
}
.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}
.page-about .breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--about-line);
}
.page-about .breadcrumbs a {
  color: var(--about-muted);
  text-decoration: none;
}
.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--about-orange);
}

/* ---------- 页头区块 ---------- */
.page-about .about-page-head {
  padding-top: clamp(2rem, 5vw, 4rem);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}
.page-about .about-head-kicker {
  margin: 0 0 0.6rem;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--about-orange);
}
.page-about .about-head-title {
  margin: 0 0 1.1rem;
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.01em;
  font-size: clamp(2rem, 5.4vw, 4.4rem);
}
.page-about .about-head-sub {
  margin: 0 0 1.75rem;
  max-width: 46em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--about-muted);
}
.page-about .about-head-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.page-about .about-head-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
  margin-top: 2.5rem;
}
.page-about .about-head-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--about-line);
  background: linear-gradient(140deg, var(--about-card) 0%, var(--about-deep) 100%);
  padding: 1.75rem 1.5rem 1.5rem;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}
.page-about .about-head-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--about-orange) 0%, transparent 78%);
}
.page-about .about-head-panel::after {
  content: "";
  position: absolute;
  right: -42px;
  top: -42px;
  width: 130px;
  height: 130px;
  background: var(--about-neon);
  opacity: 0.08;
  transform: rotate(12deg);
}
.page-about .about-panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.page-about .about-panel-label {
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--about-muted);
}
.page-about .about-panel-status {
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--about-neon);
  padding: 0.3rem 0.6rem;
  border: 1px solid rgba(0, 255, 163, 0.3);
  background: rgba(0, 255, 163, 0.06);
}
.page-about .about-panel-year {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(3rem, 8vw, 4.75rem);
  line-height: 1;
  color: var(--about-orange);
  margin: 0.5rem 0 1.25rem;
}
.page-about .about-panel-stat {
  margin: 0.25rem 0;
  font-size: 0.85rem;
  color: var(--about-muted);
}
.page-about .about-panel-stat span {
  font-family: var(--font-data);
  font-weight: 700;
  color: #ffffff;
  font-size: 1rem;
  margin-right: 0.35rem;
}
.page-about .about-panel-tags {
  margin-top: 1.25rem;
}
.page-about .about-panel-tags .chip {
  border-color: rgba(255, 92, 0, 0.45);
  background: rgba(255, 92, 0, 0.08);
  color: var(--about-muted);
  font-size: 0.78rem;
}

/* ---------- 核心服务标签条 ---------- */
.page-about .about-service-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--about-line);
}
.page-about .about-service-strip-label {
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--about-muted);
  margin-right: 0.75rem;
}
.page-about .about-service-strip .tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--about-line);
  background: var(--about-card);
  color: var(--about-muted);
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

/* ---------- 章节刊头 ---------- */
.page-about .about-section-head {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

/* ---------- 品牌故事 ---------- */
.page-about .about-story-grid {
  display: grid;
  gap: 2rem;
}
.page-about .about-story-aside {
  border-left: 3px solid var(--about-orange);
  padding-left: 1.25rem;
  align-self: start;
}
.page-about .about-story-aside-label {
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--about-orange);
  margin: 0 0 0.6rem;
}
.page-about .about-story-aside-quote {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  line-height: 1.6;
  margin: 0;
  color: #ffffff;
}
.page-about .about-story-body p {
  margin: 0 0 1.1rem;
  color: var(--about-muted);
  line-height: 1.85;
  font-size: 0.98rem;
}

/* ---------- 发展里程碑 / 时间线 ---------- */
.page-about .about-milestones {
  background-color: rgba(8, 20, 40, 0.62);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding-left: 48px;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--about-orange) 0%, var(--about-line) 45%, var(--about-neon) 100%);
}
.page-about .about-timeline-item {
  position: relative;
  display: grid;
  gap: 0.6rem 1.5rem;
  padding-bottom: clamp(2rem, 5vw, 3.25rem);
}
.page-about .about-timeline-item:last-child {
  padding-bottom: 0.5rem;
}
.page-about .about-timeline-index {
  position: absolute;
  left: -48px;
  top: 4px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-about .about-timeline-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--about-deep);
  border: 3px solid var(--about-orange);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}
.page-about .about-timeline-item:hover .about-timeline-dot,
.page-about .about-timeline-item:focus-within .about-timeline-dot {
  background: var(--about-orange);
  box-shadow: 0 0 0 7px rgba(255, 92, 0, 0.15);
  transform: scale(1.08);
}
.page-about .about-timeline-year {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  color: #ffffff;
  letter-spacing: 0.04em;
}
.page-about .about-timeline-card {
  border: 1px solid var(--about-line);
  background: rgba(15, 31, 61, 0.6);
  padding: 1.1rem 1.25rem 1.35rem;
  transition: border-color 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
}
.page-about .about-timeline-card h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1.4;
  margin: 0 0 0.5rem;
}
.page-about .about-timeline-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--about-muted);
}
.page-about .about-timeline-item:hover .about-timeline-card,
.page-about .about-timeline-item:focus-within .about-timeline-card {
  border-color: var(--about-orange);
  background: rgba(19, 38, 72, 0.78);
  transform: translateY(-2px);
}

/* ---------- 数据与团队 ---------- */
.page-about .about-data-grid {
  display: grid;
  gap: 2rem;
}
.page-about .about-data-stats {
  margin: 0 0 1.25rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--about-line);
  border-left: 1px solid var(--about-line);
}
.page-about .about-data-stat {
  border-right: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  padding: 1.25rem 1rem 1.1rem;
  background: rgba(15, 31, 61, 0.55);
  display: flex;
  flex-direction: column;
}
.page-about .about-data-stat dd {
  order: 1;
  margin: 0 0 0.4rem;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1;
  color: var(--about-orange);
}
.page-about .about-data-stat dt {
  order: 2;
  margin: 0;
  font-size: 0.78rem;
  font-family: var(--font-data);
  letter-spacing: 0.04em;
  color: var(--about-muted);
}
.page-about .about-data-caption {
  margin: 1.25rem 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--about-neon);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--about-muted);
}
.page-about .about-data-media,
.page-about .about-team-media,
.page-about .about-eco-media {
  margin: 0;
}
.page-about .about-data-media img,
.page-about .about-team-media img,
.page-about .about-eco-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 团队工作方式 ---------- */
.page-about .about-team-grid {
  display: grid;
  gap: 2rem;
}
.page-about .about-team-copy {
  max-width: 640px;
}
.page-about .about-team-copy .section-kicker {
  margin-bottom: 0.4rem;
}
.page-about .about-team-copy .section-title {
  margin-bottom: 1rem;
}
.page-about .about-team-copy p {
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--about-muted);
  margin: 0 0 1rem;
}
.page-about .about-team-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--about-line);
  display: grid;
  gap: 0.6rem;
}
.page-about .about-team-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--about-muted);
}
.page-about .about-team-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--about-orange);
  transform: rotate(45deg);
}

/* ---------- 资质与荣誉 ---------- */
.page-about .about-honors {
  background-color: rgba(5, 13, 31, 0.72);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}
.page-about .about-honor-grid {
  display: grid;
  gap: 1.5rem;
}
.page-about .about-honor-card {
  margin: 0;
  position: relative;
  padding: 1.75rem 1.5rem 1.5rem;
  border: 1px solid var(--about-line);
  background: rgba(15, 31, 61, 0.6);
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.page-about .about-honor-card:hover,
.page-about .about-honor-card:focus-within {
  border-color: var(--about-orange);
  transform: translateY(-2px);
}
.page-about .about-honor-card h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1.4;
  margin: 0 0 0.75rem;
}
.page-about .about-honor-card p {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--about-muted);
  margin: 0;
}
.page-about .about-honor-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--about-line);
  background: var(--about-deep);
  color: var(--about-orange);
  font-family: var(--font-data);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}

/* ---------- 合作与生态 ---------- */
.page-about .about-eco-layout {
  display: grid;
  gap: 2rem;
}
.page-about .about-eco-copy p {
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--about-muted);
  margin: 0 0 1rem;
}
.page-about .about-eco-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.25rem;
}
.page-about .about-eco-badges span {
  border: 1px solid var(--about-line);
  background: rgba(15, 31, 61, 0.5);
  padding: 0.45rem 0.9rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--about-neon);
  letter-spacing: 0.04em;
}
.page-about .about-eco-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

/* ---------- 焦点反馈 ---------- */
.page-about a:focus-visible,
.page-about .btn:focus-visible {
  outline: 2px solid var(--about-neon);
  outline-offset: 3px;
}

/* ---------- 桌面端布局 ---------- */
@media (min-width: 768px) {
  .page-about .about-head-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: 4rem;
  }
  .page-about .about-timeline {
    max-width: 760px;
    margin-inline: auto;
    padding-left: 72px;
  }
  .page-about .about-timeline-item {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 0.75rem 1.75rem;
    padding-bottom: 2.75rem;
  }
  .page-about .about-timeline-year {
    grid-column: 1;
    grid-row: 1;
  }
  .page-about .about-timeline-card {
    grid-column: 2;
    grid-row: 1;
  }
  .page-about .about-honor-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-story-grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 3.5rem;
  }
  .page-about .about-data-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 3rem;
    align-items: center;
  }
  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 3.5rem;
    align-items: center;
  }
  .page-about .about-eco-layout {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 3rem;
    align-items: stretch;
  }
}