.page-about {
  --about-accent: var(--color-accent);
  --about-accent-alt: var(--color-accent-alt);
  --about-data-color: var(--color-data);
  color: var(--color-light);
  background-color: var(--color-primary);
  overflow-x: hidden;
}

/* ===== 面包屑 ===== */
.page-about .breadcrumb {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 1rem var(--gap) 0;
  font-family: var(--font-data);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

/* ===== 首屏 Hero ===== */
.page-about .about-hero {
  position: relative;
  padding: 2.5rem 0 3.5rem;
  background-image:
    linear-gradient(rgba(0, 255, 133, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 133, 0.055) 1px, transparent 1px);
  background-size: 38px 38px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(135deg, transparent 35%, rgba(0, 212, 255, 0.10) 100%);
  clip-path: polygon(28% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 2.2rem;
  align-items: center;
}

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

.page-about .about-hero__eyebrow {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
  padding: 0.4rem 1rem 0.4rem 0.8rem;
  transform: skewX(-8deg);
  margin-bottom: 1.2rem;
  background: rgba(11, 31, 63, 0.72);
}

.page-about .about-hero__content h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 5.2vw, 3.15rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.page-about .about-hero__content h1::after {
  content: "";
  display: block;
  width: 92px;
  height: 7px;
  background: var(--color-accent-alt);
  margin-top: 0.9rem;
  transform: skewX(-20deg);
}

.page-about .about-hero__lead {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(245, 248, 255, 0.82);
  max-width: 37rem;
  margin: 1.2rem 0 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 1.8rem 0 2rem;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  max-width: 420px;
}

.page-about .about-hero__stats div {
  background: var(--color-surface);
  border: 2px solid rgba(58, 95, 138, 0.7);
  padding: 0.75rem 0.9rem 0.65rem;
  position: relative;
}

.page-about .about-hero__stats div::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background: var(--color-accent);
}

.page-about .about-hero__stats dt {
  font-family: var(--font-body);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: rgba(245, 248, 255, 0.55);
}

.page-about .about-hero__stats dd {
  margin: 0.15rem 0 0;
  font-family: var(--font-data);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-accent);
}

.page-about .about-hero__media {
  margin: 0;
  position: relative;
  z-index: 2;
}

.page-about .about-hero__media img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border: 2px solid var(--color-accent);
  box-shadow: var(--shadow-hard);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  padding: 3.5rem 0 3rem;
}

.page-about .about-story__layout {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.page-about .about-story__text p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(245, 248, 255, 0.8);
  margin: 0 0 1rem;
}

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

.page-about .about-story__facts {
  background: var(--color-surface);
  border: 2px solid var(--color-dim);
  border-left: 6px solid var(--color-accent);
  padding: 1.3rem 1.4rem;
  box-shadow: var(--shadow-hard);
}

.page-about .about-story__facts h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  margin: 0 0 0.9rem;
  color: var(--color-accent);
  letter-spacing: 0.04em;
}

.page-about .about-story__facts ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-story__facts li {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(58, 95, 138, 0.4);
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: rgba(245, 248, 255, 0.78);
}

.page-about .about-story__facts li:last-child {
  border-bottom: none;
}

.page-about .about-story__facts li span {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-accent-alt);
  min-width: 3em;
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  padding: 3.5rem 0;
  background: var(--color-surface);
  border-top: 2px solid var(--color-dim);
  border-bottom: 2px solid var(--color-dim);
}

.page-about .about-timeline__track {
  display: flex;
  gap: 1.2rem;
  overflow-x: auto;
  padding: 1rem 0.5rem 1.2rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline__item {
  flex: 0 0 268px;
  scroll-snap-align: start;
  position: relative;
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-data);
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent-alt);
  margin-bottom: 0.55rem;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.3);
}

.page-about .about-timeline__item::before {
  content: "";
  display: block;
  width: 3px;
  height: 10px;
  background: var(--color-accent);
  margin: 0 0 0.65rem 0.2rem;
}

.page-about .about-timeline__card {
  background: var(--color-primary);
  padding: 1.25rem 1.3rem;
  border: 2px solid var(--color-accent);
  box-shadow: var(--shadow-hard);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-timeline__card:hover {
  border-color: var(--color-accent-alt);
  transform: translateY(-3px);
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-heading);
  font-size: 1.12rem;
  margin: 0 0 0.5rem;
  color: var(--color-light);
  letter-spacing: 0.03em;
}

.page-about .about-timeline__card p {
  font-family: var(--font-body);
  font-size: 0.84rem;
  line-height: 1.65;
  color: rgba(245, 248, 255, 0.72);
  margin: 0;
}

.page-about .about-timeline__hint {
  font-family: var(--font-data);
  font-size: 0.72rem;
  color: rgba(58, 95, 138, 0.9);
  text-align: center;
  margin: 0.4rem 0 0;
}

/* ===== 数据能力一览 ===== */
.page-about .about-data {
  padding: 3.5rem 0;
}

.page-about .about-data__panel {
  display: grid;
  gap: 1.5rem;
  background: var(--color-surface);
  border: 2px solid var(--color-dim);
  box-shadow: var(--shadow-hard);
  padding: 1.5rem;
  position: relative;
}

.page-about .about-data__panel::after {
  content: "";
  position: absolute;
  top: -2px;
  right: 2rem;
  width: 52px;
  height: 7px;
  background: var(--color-accent-alt);
  transform: skewX(-30deg);
}

.page-about .about-data__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.page-about .about-data__card {
  background: var(--color-primary);
  border: 2px solid var(--color-dim);
  padding: 1.15rem 1.2rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-data__card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.page-about .about-data__num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-accent);
}

.page-about .about-data__label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-light);
  margin-top: 0.4rem;
}

.page-about .about-data__card p {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: rgba(245, 248, 255, 0.64);
  margin: 0.4rem 0 0;
  line-height: 1.5;
}

.page-about .about-data__media {
  margin: 0;
}

.page-about .about-data__media img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border: 2px solid var(--color-accent);
  object-fit: cover;
}

/* ===== 团队与价值观 ===== */
.page-about .about-team {
  padding: 3.5rem 0;
}

.page-about .about-team__layout {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.page-about .about-team__media {
  margin: 0;
}

.page-about .about-team__media img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border: 2px solid var(--color-accent);
  box-shadow: var(--shadow-hard);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-about .about-team__content {
  background: var(--color-surface);
  border: 2px solid var(--color-dim);
  padding: 1.6rem;
  box-shadow: var(--shadow-hard);
}

.page-about .about-team__intro {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(245, 248, 255, 0.82);
  margin: 0 0 1.4rem;
}

.page-about .about-team__values {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-about .about-team__values li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-primary);
  padding: 1rem 1.1rem;
  border-left: 4px solid var(--color-accent);
  transition: border-color 0.2s ease;
}

.page-about .about-team__values li:hover {
  border-left-color: var(--color-accent-alt);
}

.page-about .about-team__value-num {
  font-family: var(--font-data);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent-alt);
  line-height: 1.1;
}

.page-about .about-team__values h3 {
  font-family: var(--font-heading);
  font-size: 0.98rem;
  margin: 0 0 0.3rem;
  color: var(--color-light);
  letter-spacing: 0.04em;
}

.page-about .about-team__values p {
  font-family: var(--font-body);
  font-size: 0.84rem;
  line-height: 1.55;
  color: rgba(245, 248, 255, 0.68);
  margin: 0;
}

.page-about .about-team__actions {
  margin-top: 0.2rem;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 3.5rem 0 4.5rem;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 5fr 7fr;
    gap: 2.5rem;
  }

  .page-about .about-story__layout {
    grid-template-columns: 7fr 5fr;
    gap: 2.4rem;
  }

  .page-about .about-data__panel {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
  }

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

  .page-about .about-team__layout {
    grid-template-columns: 5fr 7fr;
    gap: 2.5rem;
  }

  .page-about .about-team__content {
    padding: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 4rem 0 5rem;
  }

  .page-about .about-hero__lead {
    font-size: 1.08rem;
  }

  .page-about .about-story {
    padding: 4.5rem 0 4rem;
  }

  .page-about .about-milestones {
    padding: 4.5rem 0;
  }

  .page-about .about-timeline__item {
    flex-basis: 292px;
  }

  .page-about .about-data {
    padding: 4.5rem 0;
  }

  .page-about .about-team {
    padding: 4.5rem 0;
  }

  .page-about .about-data__num {
    font-size: 2rem;
  }
}