.page-about {
  --about-title-size: clamp(1.6rem, 4vw, 2.4rem);
  --about-accent-deco: linear-gradient(135deg, rgba(244, 81, 30, .9) 0%, rgba(174, 234, 0, .8) 100%);
  background: var(--c-light, #F2F5F7);
  color: var(--c-text, #212529);
  position: relative;
  overflow: hidden;
  min-height: 100vh;
}

/* ===== 面包屑 ===== */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 16px 20px 0;
  font-size: 0.8rem;
  color: var(--c-primary, #0D1B3E);
  max-width: var(--container, 1360px);
  margin: 0 auto;
}
.page-about .breadcrumb a {
  color: var(--c-link, #3D6FE0);
  text-decoration: none;
  transition: color .3s var(--ease, cubic-bezier(.2, .8, .2, 1));
}
.page-about .breadcrumb a:hover {
  color: var(--c-accent, #F4511E);
  text-decoration: underline;
}
.page-about .breadcrumb span:last-child {
  font-weight: 600;
}

/* ===== 首屏 ===== */
.page-about .about-hero {
  position: relative;
  display: grid;
  max-width: var(--container, 1360px);
  margin: 0 auto;
  padding: 32px 20px 56px;
  gap: 40px;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -40px;
  width: 240px;
  height: 240px;
  background: var(--about-accent-deco);
  clip-path: polygon(0 0, 100% 20%, 80% 100%, 20% 80%);
  opacity: .12;
  pointer-events: none;
}
.page-about .about-hero__copy {
  position: relative;
  z-index: 2;
}
.page-about .about-hero__kicker {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-accent, #F4511E);
  background: rgba(244, 81, 30, .08);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 16px;
}
.page-about .about-hero h1 {
  font-family: var(--font-heading, "Noto Sans SC", sans-serif);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--c-primary, #0D1B3E);
  text-transform: uppercase;
  margin-bottom: 20px;
  word-break: break-word;
}
.page-about .about-hero__lead {
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 60ch;
  color: var(--c-text, #212529);
  margin-bottom: 28px;
}
.page-about .about-hero__stats {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 520px;
}
.page-about .about-hero__stats .stat-card {
  background: var(--c-white, #FFFFFF);
  border-radius: var(--radius-sm, 10px);
  padding: 14px 18px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  box-shadow: 0 6px 20px rgba(13, 27, 62, .06);
  border-left: 4px solid var(--c-accent, #F4511E);
}
.page-about .about-hero__stats .stat-card:nth-child(2) {
  border-left-color: var(--c-lime, #AEEA00);
}
.page-about .about-hero__stats .stat-card:nth-child(3) {
  border-left-color: var(--c-primary, #0D1B3E);
}
.page-about .about-hero__stats .stat-card__value {
  font-family: var(--font-accent, "Archivo Black", sans-serif);
  font-size: 1.9rem;
  line-height: 1;
  color: var(--c-primary, #0D1B3E);
  white-space: nowrap;
}
.page-about .about-hero__stats .stat-card__unit {
  font-size: 1rem;
  margin-left: 2px;
  color: var(--c-accent, #F4511E);
}
.page-about .about-hero__stats .stat-card__label {
  font-size: 0.85rem;
  color: var(--c-text, #212529);
}
.page-about .about-hero__visual {
  position: relative;
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-about .about-hero__visual-bg {
  position: absolute;
  inset: 8% 4% 8% 10%;
  background: var(--about-accent-deco);
  clip-path: polygon(12% 0, 100% 10%, 92% 100%, 0 88%);
  opacity: .14;
  border-radius: var(--radius, 18px);
}
.page-about .about-hero__img {
  position: relative;
  width: min(80%, 400px);
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius, 18px);
  box-shadow: var(--shadow, 0 14px 40px rgba(13, 27, 62, .12));
}

/* ===== 我们是谁 ===== */
.page-about .about-mission {
  padding: 56px 0 0;
}
.page-about .about-mission__inner {
  max-width: var(--container, 1360px);
  margin: 0 auto;
  padding: 0 20px;
}
.page-about .about-mission__title,
.page-about .about-timeline__title,
.page-about .about-team__title,
.page-about .about-honor__title {
  font-family: var(--font-heading, "Noto Sans SC", sans-serif);
  font-weight: 900;
  font-size: var(--about-title-size);
  letter-spacing: -0.02em;
  color: var(--c-primary, #0D1B3E);
  margin-bottom: 16px;
}
.page-about .about-mission__grid {
  display: grid;
  gap: 24px;
}
.page-about .about-mission__text p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 12px;
  max-width: 68ch;
}
.page-about .about-mission__points {
  display: grid;
  gap: 14px;
}
.page-about .about-mission__point {
  background: var(--c-white, #FFFFFF);
  border-radius: var(--radius-sm, 10px);
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  align-items: start;
  box-shadow: 0 4px 16px rgba(13, 27, 62, .05);
}
.page-about .about-mission__point-num {
  font-family: var(--font-accent, "Archivo Black", sans-serif);
  font-size: 1.4rem;
  color: var(--c-accent, #F4511E);
}
.page-about .about-mission__point p {
  font-size: 0.9rem;
  line-height: 1.65;
  margin: 0;
}

/* ===== 时间线 ===== */
.page-about .about-timeline {
  padding: 64px 0 56px;
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10%;
  width: 240px;
  height: 240px;
  background: var(--c-lime, #AEEA00);
  opacity: .06;
  border-radius: 50%;
  filter: blur(40px);
  pointer-events: none;
}
.page-about .about-timeline__inner {
  max-width: var(--container, 1360px);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
}
.page-about .about-timeline__intro {
  font-size: 0.95rem;
  max-width: 60ch;
  color: var(--c-text, #212529);
  line-height: 1.7;
  margin-bottom: 32px;
}
.page-about .about-timeline__track {
  position: relative;
  padding-left: 0;
}
.page-about .about-timeline__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
  position: relative;
}
.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--c-line, #DDE2E6);
  border-radius: 99px;
}
.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 36px 52px;
}
.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-white, #FFFFFF);
  border: 4px solid var(--c-accent, #F4511E);
  box-shadow: 0 0 0 4px rgba(244, 81, 30, .12);
  z-index: 2;
}
.page-about .about-timeline__item:nth-child(2)::before {
  border-color: var(--c-lime, #AEEA00);
  box-shadow: 0 0 0 4px rgba(174, 234, 0, .15);
}
.page-about .about-timeline__item:nth-child(3)::before {
  border-color: var(--c-primary, #0D1B3E);
  box-shadow: 0 0 0 4px rgba(13, 27, 62, .1);
}
.page-about .about-timeline__item--current::before {
  border-color: var(--c-green, #00C853);
  background: var(--c-lime, #AEEA00);
  box-shadow: 0 0 0 4px rgba(174, 234, 0, .2);
}
.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-accent, "Archivo Black", sans-serif);
  font-size: 1.5rem;
  color: var(--c-accent, #F4511E);
  margin-bottom: 6px;
  line-height: 1.2;
}
.page-about .about-timeline__item:nth-child(2) .about-timeline__year {
  color: var(--c-primary, #0D1B3E);
}
.page-about .about-timeline__item--current .about-timeline__year {
  color: var(--c-dark, #1A1F24);
  background: var(--c-lime, #AEEA00);
  padding: 2px 10px;
  border-radius: 6px;
  font-size: 1.2rem;
}
.page-about .about-timeline__content {
  background: var(--c-white, #FFFFFF);
  border-radius: var(--radius-sm, 10px);
  padding: 16px 18px;
  box-shadow: 0 4px 14px rgba(13, 27, 62, .05);
}
.page-about .about-timeline__content h3 {
  font-family: var(--font-heading, "Noto Sans SC", sans-serif);
  font-size: 1rem;
  font-weight: 800;
  color: var(--c-primary, #0D1B3E);
  margin-bottom: 6px;
}
.page-about .about-timeline__content p {
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}
.page-about .about-chart {
  margin: 40px 0 0;
  padding: 0;
}
.page-about .about-chart img {
  width: 100%;
  height: auto;
  max-width: 600px;
  border-radius: var(--radius, 18px);
  box-shadow: var(--shadow, 0 14px 40px rgba(13, 27, 62, .12));
  display: block;
}
.page-about .about-chart figcaption {
  font-size: 0.8rem;
  color: #6c7680;
  padding: 10px 4px 0;
  line-height: 1.5;
}

/* ===== 团队 ===== */
.page-about .about-team {
  padding: 56px 0;
  background: var(--c-primary, #0D1B3E);
  color: var(--c-white, #FFFFFF);
  position: relative;
  overflow: hidden;
}
.page-about .about-team::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 300px;
  height: 300px;
  background: var(--c-accent, #F4511E);
  clip-path: polygon(30% 0, 100% 0, 100% 70%);
  opacity: .18;
  pointer-events: none;
}
.page-about .about-team__inner {
  max-width: var(--container, 1360px);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
}
.page-about .about-team .section-label {
  color: var(--c-lime, #AEEA00);
}
.page-about .about-team__title {
  color: var(--c-white, #FFFFFF) !important;
  margin-bottom: 12px;
}
.page-about .about-team__intro {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, .82);
  max-width: 68ch;
  margin-bottom: 32px;
}
.page-about .about-team__card {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  background: rgba(255, 255, 255, .06);
  border-radius: var(--radius-sm, 10px);
  padding: 20px;
  margin-bottom: 14px;
  align-items: start;
  transition: background .3s var(--ease, cubic-bezier(.2, .8, .2, 1)), transform .3s var(--ease, cubic-bezier(.2, .8, .2, 1));
}
.page-about .about-team__card:hover {
  background: rgba(255, 255, 255, .12);
  transform: translateX(6px);
}
.page-about .about-team__card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, .1);
  border-radius: 14px;
}
.page-about .about-team__card-copy h3 {
  font-family: var(--font-heading, "Noto Sans SC", sans-serif);
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--c-white, #FFFFFF);
}
.page-about .about-team__card-copy p {
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
  color: rgba(255, 255, 255, .78);
}
.page-about .about-team__visual {
  margin: 28px 0 0;
}
.page-about .about-team__visual img {
  width: 100%;
  height: auto;
  max-width: 600px;
  border-radius: var(--radius, 18px);
  display: block;
}
.page-about .about-team__visual figcaption {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, .6);
  padding: 10px 4px 0;
  line-height: 1.5;
}

/* ===== 荣誉资质 ===== */
.page-about .about-honor {
  padding: 56px 0 0;
}
.page-about .about-honor__inner {
  max-width: var(--container, 1360px);
  margin: 0 auto;
  padding: 0 20px;
}
.page-about .about-honor__grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}
.page-about .about-honor__item {
  background: var(--c-white, #FFFFFF);
  border-radius: var(--radius-sm, 10px);
  padding: 22px 20px;
  box-shadow: 0 4px 16px rgba(13, 27, 62, .06);
  border-top: 4px solid transparent;
  transition: border-color .3s var(--ease, cubic-bezier(.2, .8, .2, 1)), transform .3s var(--ease, cubic-bezier(.2, .8, .2, 1));
}
.page-about .about-honor__item:hover {
  border-top-color: var(--c-accent, #F4511E);
  transform: translateY(-4px);
}
.page-about .about-honor__item .badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: .06em;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.page-about .about-honor__item .badge--lime {
  background: rgba(174, 234, 0, .18);
  color: #618b00;
}
.page-about .about-honor__item .badge--accent {
  background: rgba(244, 81, 30, .12);
  color: var(--c-accent, #F4511E);
}
.page-about .about-honor__item h3 {
  font-family: var(--font-heading, "Noto Sans SC", sans-serif);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--c-primary, #0D1B3E);
  margin-bottom: 6px;
}
.page-about .about-honor__item p {
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}
.page-about .about-honor__links {
  margin-top: 36px;
  padding: 24px 0 0;
  border-top: 1px solid var(--c-line, #DDE2E6);
}
.page-about .about-honor__links p {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-primary, #0D1B3E);
  margin-bottom: 14px;
}
.page-about .about-honor__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== CTA ===== */
.page-about .about-cta {
  padding: 56px 0 72px;
}
.page-about .about-cta__inner {
  max-width: var(--container, 1360px);
  margin: 0 auto;
  padding: 0 20px;
}
.page-about .about-cta__label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-accent, #F4511E);
  margin-bottom: 6px;
}
.page-about .about-cta__text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--c-text, #212529);
}
.page-about .about-cta__text a {
  color: var(--c-link, #3D6FE0);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid rgba(61, 111, 224, .3);
  transition: border-color .3s var(--ease, cubic-bezier(.2, .8, .2, 1));
}
.page-about .about-cta__text a:hover {
  border-bottom-color: var(--c-accent, #F4511E);
}

/* ===== 通用按钮适配 ===== */
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform .3s var(--ease, cubic-bezier(.2, .8, .2, 1)), box-shadow .3s var(--ease, cubic-bezier(.2, .8, .2, 1)), background .3s;
}
.page-about .btn--primary {
  background: var(--c-accent, #F4511E);
  color: var(--c-white, #FFFFFF);
  box-shadow: 0 8px 24px rgba(244, 81, 30, .3);
}
.page-about .btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(244, 81, 30, .38);
}
.page-about .btn--ghost {
  background: transparent;
  color: var(--c-primary, #0D1B3E);
  border: 2px solid var(--c-line, #DDE2E6);
}
.page-about .btn--ghost:hover {
  border-color: var(--c-primary, #0D1B3E);
  background: rgba(13, 27, 62, .04);
}

/* ===== 滚入显现 ===== */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s var(--ease, cubic-bezier(.2, .8, .2, 1)), transform .6s var(--ease, cubic-bezier(.2, .8, .2, 1));
  transition-delay: var(--reveal-delay, 0ms);
}
.page-about [data-reveal="left"] {
  transform: translateX(-24px);
}
.page-about [data-reveal="right"] {
  transform: translateX(24px);
}
.page-about [data-reveal="scale"] {
  transform: scale(.95);
}
.page-about .is-revealed[data-reveal],
.page-about [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-about .about-team__card:hover {
    transform: none;
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
    padding: 48px 40px 72px;
  }
  .page-about .about-hero__stats {
    flex-direction: column;
  }
  .page-about .about-hero__visual {
    min-height: 380px;
  }
  .page-about .about-mission__inner,
  .page-about .about-timeline__inner,
  .page-about .about-team__inner,
  .page-about .about-honor__inner,
  .page-about .about-cta__inner {
    padding: 0 40px;
  }
  .page-about .about-mission__grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
  }
  .page-about .about-mission__text {
    padding-top: 8px;
  }
  .page-about .about-mission__points {
    gap: 16px;
  }
  .page-about .about-timeline__list::before {
    left: 40px;
  }
  .page-about .about-timeline__item {
    padding: 0 0 44px 88px;
  }
  .page-about .about-timeline__item::before {
    left: 28px;
    width: 24px;
    height: 24px;
  }
  .page-about .about-timeline__content {
    padding: 20px 24px;
  }
  .page-about .about-timeline__content h3 {
    font-size: 1.1rem;
  }
  .page-about .about-timeline__content p {
    font-size: 0.92rem;
  }
  .page-about .about-team__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .page-about .about-team__card {
    grid-template-columns: 64px 1fr;
    gap: 20px;
    padding: 24px;
  }
  .page-about .about-team__card-icon {
    width: 64px;
    height: 64px;
  }
  .page-about .about-honor__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .page-about .about-honor__item {
    padding: 26px 22px;
  }
}

@media (min-width: 1024px) {
  .page-about .breadcrumb {
    padding-left: 40px;
    padding-right: 40px;
  }
  .page-about .about-hero {
    padding-top: 56px;
    padding-bottom: 88px;
  }
  .page-about .about-hero h1 {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
  }
  .page-about .about-hero__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    max-width: none;
  }
  .page-about .about-hero__stats .stat-card {
    flex-direction: column;
    gap: 8px;
    padding: 18px;
  }
  .page-about .about-mission {
    padding-top: 72px;
  }
  .page-about .about-timeline {
    padding-top: 88px;
  }
  .page-about .about-team {
    padding-top: 80px;
    padding-bottom: 80px;
  }
  .page-about .about-team__cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 8px;
  }
  .page-about .about-team__card {
    margin-bottom: 0;
  }
  .page-about .about-team__visual img {
    max-width: 640px;
  }
  .page-about .about-honor {
    padding-top: 72px;
  }
}

.page-about {
  --c-green: currentColor;
  --reveal-delay: 0.3s;
}