.page-about {
  --about-accent-soft: rgba(57, 255, 20, 0.06);
  --about-blue-soft: rgba(0, 229, 255, 0.12);
  --about-paper-dim: rgba(245, 230, 200, 0.55);
  position: relative;
  overflow-x: hidden;
  background:
    linear-gradient(rgba(57, 255, 20, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.04) 1px, transparent 1px),
    var(--primary);
  background-size: 44px 44px;
  font-family: var(--font-body);
  color: var(--text-primary);
}

/* 面包屑 */
.page-about .breadcrumb {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.page-about .breadcrumb a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--accent-green);
}

/* 页首横幅 */
.page-about .about-hero {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-about .about-hero__text {
  position: relative;
  z-index: 2;
  padding: 1rem 0;
}

.page-about .about-hero__text h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6vw, 3.8rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0.2rem 0 1rem;
  max-width: 680px;
}

.page-about .about-hero__text .about-hero__lead {
  display: block;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent-green);
  font-size: 0.55em;
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
}

.page-about .about-hero__text p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 480px;
  margin: 0 0 1.5rem;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-hero__visual {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
  background: var(--surface);
}

.page-about .about-hero__visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.85) contrast(1.12);
}

.page-about .about-hero__year {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(4rem, 12vw, 8rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px var(--accent-blue);
  opacity: 0.55;
  z-index: 2;
  pointer-events: none;
  white-space: nowrap;
}

.page-about .about-hero__ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 180px;
  height: 180px;
  border: 1px solid var(--accent-green);
  border-radius: 50%;
  opacity: 0.6;
  z-index: 1;
}

.page-about .about-hero__ring::after {
  content: '';
  position: absolute;
  inset: -24px;
  border: 1px dashed rgba(0, 229, 255, 0.5);
  border-radius: 50%;
}

.page-about .about-hero__glow {
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 180px;
  height: 180px;
  background: var(--gradient);
  filter: blur(60px);
  opacity: 0.35;
  z-index: 1;
}

/* 使命 */
.page-about .about-mission {
  max-width: var(--container);
  margin: 0 auto;
  padding: 3rem 1.25rem;
}

.page-about .about-mission__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  background: var(--surface);
  padding: 1.75rem;
  clip-path: polygon(16px 0, 100% 0, calc(100% - 16px) 100%, 0 100%);
  border-left: 3px solid var(--accent-green);
}

.page-about .about-mission__head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1.15;
  margin: 0.5rem 0 0;
}

.page-about .about-mission__body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin: 0 0 0.9rem;
}

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

.page-about .about-mission__body strong {
  color: var(--accent-green);
  font-weight: 600;
}

/* 分屏：时间线 + 团队 */
.page-about .about-split {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 1rem 1.25rem 3rem;
}

.page-about .about-split__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.page-about .about-split__header {
  margin-bottom: 1.5rem;
}

.page-about .about-split__header h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin: 0.35rem 0 0;
}

/* 时间线 */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient);
  opacity: 0.7;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 1.5rem;
}

.page-about .about-timeline__item::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 0.35rem;
  width: 16px;
  height: 16px;
  background: var(--primary);
  border: 2px solid var(--accent-green);
  transform: rotate(45deg);
}

.page-about .about-timeline__year {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.35rem;
  color: var(--accent-green);
  letter-spacing: 0.02em;
  display: block;
  margin-bottom: 0.4rem;
  transition: color 0.2s ease, transform 0.2s ease;
}

.page-about .about-timeline__item:hover .about-timeline__year {
  color: var(--accent-blue);
  transform: translateX(3px);
}

.page-about .about-timeline__card {
  background: var(--surface);
  padding: 1.1rem 1.25rem;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  border-left: 3px solid transparent;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .about-timeline__item:hover .about-timeline__card {
  border-left-color: var(--accent-blue);
  transform: translateX(2px);
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  margin: 0 0 0.35rem;
}

.page-about .about-timeline__card p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 0;
}

/* 团队 */
.page-about .about-split__team {
  display: flex;
  flex-direction: column;
}

.page-about .about-team__media {
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  margin-bottom: 1.5rem;
}

.page-about .about-team__media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about .about-team__content h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.8vw, 2.3rem);
  line-height: 1.2;
  margin: 0.45rem 0 1rem;
}

.page-about .about-team__content > p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin: 0 0 0.9rem;
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.page-about .about-team__stat {
  background: var(--surface);
  padding: 1rem 0.65rem;
  text-align: center;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  border-top: 2px solid var(--accent-green);
}

.page-about .about-team__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 3.5vw, 2.5rem);
  line-height: 1;
  color: var(--accent-green);
  display: block;
}

.page-about .about-team__num small {
  font-size: 0.55em;
  color: var(--accent-blue);
}

.page-about .about-team__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  display: block;
  margin-top: 0.35rem;
  letter-spacing: 0.03em;
}

/* 资质与合作 */
.page-about .about-honor {
  max-width: var(--container);
  margin: 0 auto;
  padding: 3rem 1.25rem;
}

.page-about .about-honor__head {
  margin-bottom: 2rem;
}

.page-about .about-honor__head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin: 0.35rem 0 0.5rem;
}

.page-about .about-honor__head p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.page-about .about-honor__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .about-honor__card {
  position: relative;
  background: var(--surface);
  padding: 1.5rem 1.4rem 1.4rem;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  overflow: hidden;
}

.page-about .about-honor__card::after {
  content: '';
  position: absolute;
  right: -35px;
  bottom: -35px;
  width: 90px;
  height: 90px;
  border: 1px solid rgba(57, 255, 20, 0.18);
  transform: rotate(45deg);
}

.page-about .about-honor__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--primary);
  background: var(--gradient);
  padding: 0.25rem 0.6rem;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  margin-bottom: 0.8rem;
}

.page-about .about-honor__card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
}

.page-about .about-honor__card p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 0;
}

.page-about .about-honor__foot {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .about-honor__foot img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  clip-path: polygon(14px 0, calc(100% - 14px) 0, 100% 14px, 100% calc(100% - 14px), calc(100% - 14px) 100%, 14px 100%, 0 calc(100% - 14px), 0 14px);
}

.page-about .about-honor__foot p {
  color: var(--about-paper-dim);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  margin: 0;
}

/* 结尾 CTA */
.page-about .about-cta {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 3rem 1.25rem 4.5rem;
  text-align: center;
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 5vw, 3rem);
  margin: 0 0 0.5rem;
}

.page-about .about-cta p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin: 0 0 1.75rem;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

/* 滚动显现 */
.page-about [data-reveal] {
  opacity: 0.7;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.page-about [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* 平板与桌面 */
@media (min-width: 768px) {
  .page-about .breadcrumb {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .page-about .about-hero {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1fr 1.05fr;
    align-items: stretch;
    gap: 2rem;
  }

  .page-about .about-hero__visual {
    min-height: 380px;
  }

  .page-about .about-hero__text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
  }

  .page-about .about-mission,
  .page-about .about-honor {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .page-about .about-mission__panel {
    grid-template-columns: 1fr 1.6fr;
    gap: 2.5rem;
    padding: 2.5rem;
  }

  .page-about .about-split {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .page-about .about-split__inner {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
  }

  .page-about .about-team__stats {
    gap: 1rem;
  }

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

  .page-about .about-honor__foot {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-about .about-honor__foot p {
    max-width: 420px;
  }

  .page-about .about-cta {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

/* 大桌面 */
@media (min-width: 1024px) {
  .page-about .about-hero__visual {
    min-height: 440px;
  }

  .page-about .about-timeline::before {
    left: 6px;
  }

  .page-about .about-timeline__item {
    padding-left: 2rem;
  }
}