.page-about {
  background: var(--dawn-white);
  color: var(--text-ink);
  font-family: var(--font-sans);
}

/* ===== 面包屑 ===== */
.page-about .about-hero .breadcrumb {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: calc(var(--header-h) + 1.25rem) var(--content-pad) 0;
  z-index: 3;
}

.page-about .about-hero .breadcrumb__link {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color var(--ease);
}

.page-about .about-hero .breadcrumb__link:hover,
.page-about .about-hero .breadcrumb__link:focus {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-hero .breadcrumb__separator {
  color: rgba(255, 255, 255, 0.35);
}

.page-about .about-hero .breadcrumb__current {
  color: rgba(255, 255, 255, 0.88);
}

/* ===== 首屏：启航 ===== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, var(--deep-blue) 0%, var(--deep-blue) 32%, var(--dark-ink) 100%);
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 22%, rgba(245, 192, 75, 0.16), transparent 42%),
    radial-gradient(circle at 14% 76%, rgba(242, 140, 40, 0.10), transparent 36%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  right: -3.5rem;
  bottom: -3.5rem;
  width: 12rem;
  height: 12rem;
  border: 1px solid rgba(245, 192, 75, 0.28);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
  align-items: center;
  padding-top: 2.5rem;
}

.page-about .about-hero__content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-about .about-hero__topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.page-about .about-hero__vertical {
  color: var(--gold);
  opacity: 0.9;
  font-size: 0.8rem;
}

.page-about .about-hero__kicker {
  margin: 0;
  font-size: var(--small-size);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-hero h1 {
  margin: 0;
  color: var(--pure-white);
  font-size: clamp(2.3rem, 7vw, 4.3rem);
  font-weight: var(--h1-weight);
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.page-about .about-hero__lead {
  max-width: 36rem;
  margin: 0;
  color: rgba(244, 247, 250, 0.85);
  font-size: 1.04rem;
  font-weight: 300;
  line-height: 1.85;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.page-about .about-hero__visual {
  position: relative;
  max-width: 34rem;
}

.page-about .about-hero__figure {
  display: block;
  margin: 0;
  padding: 0.4rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 6px;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 3px;
}

.page-about .about-hero__stamp {
  position: absolute;
  right: -0.25rem;
  bottom: 1.2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 50%;
  background: var(--vital-orange);
  color: var(--pure-white);
  box-shadow: 0 8px 20px rgba(242, 140, 40, 0.36);
  transform: rotate(6deg);
}

.page-about .about-hero__stamp-year {
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.page-about .about-hero__stamp-label {
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.92;
}

/* ===== 品牌起源 ===== */
.page-about .about-origin {
  background: var(--dawn-white);
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.page-about .about-origin__grid {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-origin__aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  position: relative;
}

.page-about .about-origin__title {
  color: var(--deep-blue);
  letter-spacing: 0.12em;
  font-size: 0.85rem;
}

.page-about .about-origin__year {
  position: absolute;
  right: 0;
  top: -1.5rem;
  font-size: clamp(4rem, 12vw, 6.5rem);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(10, 58, 91, 0.12);
  pointer-events: none;
  user-select: none;
}

.page-about .about-origin__main h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: var(--h2-weight);
  letter-spacing: -0.01em;
  color: var(--deep-blue);
  line-height: 1.25;
}

.page-about .about-origin__body p {
  margin: 0 0 1rem;
  color: var(--text-ink);
  line-height: 1.8;
  font-weight: 300;
}

.page-about .about-origin__stats {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 2rem 0 0;
  padding: 0;
}

.page-about .about-origin__stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 1.2rem 1.35rem;
  background: var(--pure-white);
  border: 1px solid rgba(10, 58, 91, 0.1);
  border-left: 4px solid var(--vital-orange);
  border-radius: 3px;
  box-shadow: 6px 6px 0 rgba(10, 58, 91, 0.05);
}

.page-about .about-origin__stat strong {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--deep-blue);
}

.page-about .about-origin__stat span {
  font-size: var(--small-size);
  letter-spacing: 0.05em;
  color: rgba(17, 38, 58, 0.66);
}

.page-about .about-origin__note {
  margin: 1.5rem 0 0;
  font-size: 0.82rem;
  color: rgba(17, 38, 58, 0.5);
}

/* ===== 成长里程碑 ===== */
.page-about .about-milestones {
  position: relative;
  overflow: hidden;
  background: linear-gradient(170deg, var(--deep-blue) 0%, var(--dark-ink) 100%);
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.page-about .about-milestones__header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 3rem;
}

.page-about .about-milestones__heading {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.page-about .about-milestones__heading h2 {
  margin: 0;
  color: var(--pure-white);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: var(--h2-weight);
  letter-spacing: -0.01em;
}

.page-about .about-milestones__note {
  margin: 0;
  max-width: 32rem;
  color: rgba(244, 247, 250, 0.72);
  line-height: 1.7;
  font-weight: 300;
}

.page-about .about-milestones__timeline {
  position: relative;
}

.page-about .about-milestones__svg {
  position: absolute;
  top: 1rem;
  left: 8%;
  width: 180px;
  height: auto;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-milestones__list {
  position: relative;
  z-index: 1;
}

.page-about .about-milestones__item {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0.85rem;
  align-items: start;
  padding-bottom: 2.5rem;
}

.page-about .about-milestones__marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.page-about .about-milestones__dot {
  display: block;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  border: 3px solid var(--vital-orange);
  background: var(--deep-blue);
  box-shadow: 0 0 0 4px rgba(242, 140, 40, 0.16);
  transition: transform var(--ease), box-shadow var(--ease);
}

.page-about .about-milestones__year {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.page-about .about-milestones__card {
  position: relative;
  overflow: hidden;
  padding: 1.25rem 1.25rem 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.98);
  border-radius: 3px;
  box-shadow: 0 12px 28px rgba(5, 25, 42, 0.45);
  transition: box-shadow var(--ease), transform var(--ease);
}

.page-about .about-milestones__card::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--vital-orange);
}

.page-about .about-milestones__item:hover .about-milestones__card {
  box-shadow: 0 18px 34px rgba(5, 25, 42, 0.58);
  transform: translateY(-3px);
}

.page-about .about-milestones__item:hover .about-milestones__dot {
  transform: scale(1.4);
  box-shadow: 0 0 0 7px rgba(242, 140, 40, 0.22);
}

.page-about .about-milestones__card h3 {
  margin: 0.75rem 0 0.5rem;
  color: var(--deep-blue);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .about-milestones__card p {
  margin: 0;
  color: rgba(17, 38, 58, 0.72);
  font-size: 0.95rem;
  line-height: 1.7;
  font-weight: 300;
}

.page-about .about-milestones__card .tag {
  background: var(--shadow-blue);
  color: var(--deep-blue);
}

.page-about .about-milestones__card .tag--orange {
  background: var(--vital-orange);
  color: var(--pure-white);
}

.page-about .about-milestones__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  padding: 1.5rem 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-milestones__footer p {
  margin: 0;
  color: rgba(244, 247, 250, 0.7);
}

/* ===== 我们如何服务全球华人 ===== */
.page-about .about-services {
  background: var(--dawn-white);
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.page-about .about-services__header {
  max-width: 42rem;
  margin-bottom: 2.25rem;
}

.page-about .about-services__kicker {
  margin: 0 0 0.6rem;
  font-size: var(--small-size);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--vital-orange);
}

.page-about .about-services__header h2 {
  margin: 0 0 0.8rem;
  color: var(--deep-blue);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: var(--h2-weight);
  letter-spacing: -0.01em;
}

.page-about .about-services__intro {
  margin: 0;
  color: rgba(17, 38, 58, 0.7);
  line-height: 1.75;
  font-weight: 300;
}

.page-about .about-services__grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.25rem;
}

.page-about .about-services__card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 1.75rem 1.5rem;
  background: var(--pure-white);
  border: 1px solid rgba(10, 58, 91, 0.1);
  border-radius: 4px;
  box-shadow: none;
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}

.page-about .about-services__card:hover {
  border-color: var(--vital-orange);
  box-shadow: var(--shadow-soft);
  transform: translateY(-4px);
}

.page-about .about-services__num {
  position: absolute;
  top: 0.9rem;
  right: 1.1rem;
  font-size: 3.4rem;
  font-weight: 200;
  line-height: 1;
  color: rgba(10, 58, 91, 0.12);
  pointer-events: none;
  user-select: none;
}

.page-about .about-services__card h3 {
  margin: 0.5rem 0 0;
  color: var(--deep-blue);
  font-size: 1.32rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .about-services__card p {
  margin: 0;
  color: rgba(17, 38, 58, 0.72);
  font-size: 0.95rem;
  line-height: 1.75;
  font-weight: 300;
  flex: 1;
}

.page-about .about-services__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.75rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--vital-orange);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease), color var(--ease);
}

.page-about .about-services__link:hover {
  color: var(--deep-blue);
  border-bottom-color: var(--vital-orange);
}

/* ===== 技术底座与安全承诺 ===== */
.page-about .about-tech {
  background: linear-gradient(160deg, var(--dark-ink) 0%, var(--deep-blue) 120%);
  color: var(--pure-white);
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.page-about .about-tech__grid {
  display: grid;
  gap: 2.25rem;
  align-items: center;
}

.page-about .about-tech__visual {
  position: relative;
}

.page-about .about-tech__figure {
  display: block;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
}

.page-about .about-tech__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .about-tech__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--gold);
  border-radius: 999px;
  color: var(--gold);
  font-size: var(--small-size);
  letter-spacing: 0.06em;
}

.page-about .about-tech__content h2 {
  margin: 1rem 0 1rem;
  color: var(--pure-white);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: var(--h2-weight);
  letter-spacing: -0.01em;
}

.page-about .about-tech__content > p {
  margin: 0;
  color: rgba(244, 247, 250, 0.74);
  line-height: 1.8;
  font-weight: 300;
}

.page-about .about-tech__list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .about-tech__list li {
  display: grid;
  gap: 0.2rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .about-tech__list strong {
  color: var(--gold);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

.page-about .about-tech__list span {
  color: rgba(244, 247, 250, 0.65);
  font-size: 0.9rem;
  font-weight: 300;
}

/* ===== 团队与文化 ===== */
.page-about .about-team {
  background: var(--pure-white);
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.page-about .about-team__header {
  max-width: 44rem;
}

.page-about .about-team__header h2 {
  margin: 0.8rem 0 0.8rem;
  color: var(--deep-blue);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: var(--h2-weight);
  letter-spacing: -0.01em;
}

.page-about .about-team__intro {
  margin: 0;
  color: rgba(17, 38, 58, 0.72);
  line-height: 1.75;
  font-weight: 300;
}

.page-about .about-team__layout {
  display: grid;
  gap: 2rem;
  margin-top: 2.5rem;
  align-items: center;
}

.page-about .about-team__figure {
  display: block;
  margin: 0;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(10, 58, 91, 0.1);
  box-shadow: var(--shadow-soft);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .about-team__content p {
  margin: 0 0 1.5rem;
  color: var(--text-ink);
  line-height: 1.8;
  font-weight: 300;
}

.page-about .about-team__facts {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.page-about .about-team__facts li {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(10, 58, 91, 0.1);
  border-radius: 4px;
  background: var(--dawn-white);
}

.page-about .about-team__facts strong {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--deep-blue);
}

.page-about .about-team__facts span {
  font-size: var(--small-size);
  letter-spacing: 0.04em;
  color: rgba(17, 38, 58, 0.62);
}

.page-about .about-team__honors {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}

.page-about .about-team__honor {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.85rem;
  border: 1px dashed rgba(10, 58, 91, 0.32);
  border-radius: 999px;
  font-size: var(--small-size);
  letter-spacing: 0.05em;
  color: var(--deep-blue);
  background: var(--shadow-blue);
}

/* ===== 愿景 CTA ===== */
.page-about .about-vision {
  position: relative;
  overflow: hidden;
  background: var(--dark-ink);
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.page-about .about-vision::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(10, 58, 91, 0.65), transparent 62%),
    repeating-linear-gradient(45deg, rgba(245, 192, 75, 0.05) 0, rgba(245, 192, 75, 0.05) 1px, transparent 1px, transparent 14px);
  pointer-events: none;
}

.page-about .about-vision__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 42rem;
  margin: 0 auto;
}

.page-about .about-vision__vertical {
  align-self: flex-start;
  color: var(--gold);
  margin: 0 0 0.5rem 0.5rem;
  font-size: 0.8rem;
}

.page-about .about-vision h2 {
  margin: 0.75rem 0 1rem;
  color: var(--pure-white);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: var(--h2-weight);
  letter-spacing: -0.01em;
}

.page-about .about-vision p {
  margin: 0 0 1.75rem;
  color: rgba(244, 247, 250, 0.74);
  line-height: 1.8;
  font-weight: 300;
}

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

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-about .about-origin__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-services__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-tech__list li {
    grid-template-columns: 9rem 1fr;
    gap: 1rem;
  }

  .page-about .about-team__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 3rem;
  }

  .page-about .about-hero__visual {
    justify-self: end;
  }

  .page-about .about-hero__stamp {
    right: -0.75rem;
    bottom: 1.6rem;
    width: 5.2rem;
    height: 5.2rem;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(8rem, 0.35fr) minmax(0, 1fr);
    gap: 3rem;
  }

  .page-about .about-origin__year {
    top: -1rem;
  }

  .page-about .about-milestones__header {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
  }

  .page-about .about-milestones__svg {
    left: 50%;
    width: 420px;
    max-width: 95%;
    transform: translateX(-50%);
    opacity: 0.4;
  }

  .page-about .about-milestones__item {
    grid-template-columns: 6rem 1fr;
    gap: 1.5rem;
    padding-bottom: 2.75rem;
  }

  .page-about .about-milestones__item:nth-child(even) {
    padding-left: 3rem;
  }

  .page-about .about-milestones__card {
    padding: 1.4rem 1.6rem 1.4rem 1.9rem;
  }

  .page-about .about-tech__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 3.25rem;
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 3rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__content {
    padding-right: 2rem;
  }

  .page-about .about-milestones__item:nth-child(even) {
    padding-left: 6rem;
  }

  .page-about .about-services__grid {
    gap: 1.6rem;
  }
}