.page-about {
  --about-paper: rgba(255, 255, 255, 0.035);
  --about-decor-line: rgba(255, 107, 53, 0.16);
  overflow-x: hidden;
  background: var(--color-primary);
  color: var(--color-text);
}

/* 面包屑 */
.page-about .breadcrumb {
  padding-top: 1.25rem;
  padding-bottom: 0;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.page-about .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}

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

/* ===== 英雄区 ===== */
.page-about .about-hero {
  position: relative;
  padding: 3.5rem 0 4.5rem;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

.page-about .about-hero__content {
  max-width: 640px;
}

.page-about .about-hero__lead {
  margin-top: 1.5rem;
  font-size: 1.1875rem;
  line-height: 1.75;
  color: var(--color-heading);
}

.page-about .about-hero__desc {
  margin-top: 0.875rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 2rem;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
}

.page-about .about-hero__figure::before {
  content: "";
  position: absolute;
  top: -0.5rem;
  right: -0.25rem;
  width: 62%;
  height: 62%;
  border: 2px solid var(--color-gold);
  transform: skewY(-3deg);
  opacity: 0.75;
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.32), rgba(255, 215, 0, 0.14));
  opacity: 0;
  transition: opacity 0.45s ease;
  border-radius: var(--radius-lg);
  z-index: 2;
  pointer-events: none;
}

.page-about .about-hero__figure:hover::after {
  opacity: 1;
}

.page-about .about-hero__img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: transform 0.45s ease, box-shadow 0.45s ease;
}

.page-about .about-hero__figure:hover .about-hero__img {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.42);
}

.page-about .about-hero__fig-label {
  position: absolute;
  bottom: 0.875rem;
  left: 0;
  z-index: 3;
  background: var(--color-accent);
  color: var(--color-heading);
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.75rem;
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  position: relative;
  padding: 4.5rem 0;
  background: linear-gradient(135deg, var(--color-primary-soft) 0%, var(--color-primary) 62%);
}

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

.page-about .about-story__inner::after {
  content: "";
  position: absolute;
  top: 1.5rem;
  right: -1.5rem;
  width: 220px;
  height: 220px;
  background: var(--about-decor-line);
  transform: rotate(5deg);
  z-index: 0;
  pointer-events: none;
}

.page-about .about-story__head {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.page-about .about-story__body {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.page-about .about-story__text p {
  line-height: 1.85;
  margin: 0 0 1.125rem;
  color: var(--color-text);
}

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

.page-about .about-story__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.875rem;
}

.page-about .about-story__stats .data-stat {
  background: var(--color-card);
  border-radius: var(--radius);
  padding: 1rem 1.125rem;
}

.page-about .about-story__stats .data-stat__value {
  color: var(--color-gold);
}

/* ===== 里程碑 ===== */
.page-about .about-milestones {
  padding: 4.5rem 0;
}

.page-about .about-milestones__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-top: 2.5rem;
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-gold));
  opacity: 0.45;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 2rem;
  padding-bottom: 1.75rem;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.22);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.25);
  padding: 0.2rem 0.5rem;
  margin-bottom: 0.6rem;
}

.page-about .about-timeline__card {
  background: var(--color-card);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 1rem 1.125rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-timeline__card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.3);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 0.375rem;
  font-size: 1.125rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-heading);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.page-about .about-milestones__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

/* ===== 资质与认证 ===== */
.page-about .about-certs {
  padding: 4.5rem 0;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-deep) 100%);
}

.page-about .about-certs__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2.5rem;
  align-items: start;
}

.page-about .about-certs__card {
  position: relative;
  padding: 1.5rem;
  border-radius: var(--radius);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-certs__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.page-about .about-certs__icon {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  border: 1px solid rgba(255, 215, 0, 0.4);
  padding: 0.25rem 0.5rem;
  margin-bottom: 0.875rem;
}

.page-about .about-certs__card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-heading);
}

.page-about .about-certs__card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--color-text-muted);
}

/* ===== 合作生态 ===== */
.page-about .about-partners {
  padding: 4.5rem 0;
}

.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

.page-about .about-partners__content p {
  line-height: 1.85;
  margin: 1rem 0 0;
  color: var(--color-text);
}

.page-about .about-partners__content .btn {
  margin-top: 1.5rem;
}

.page-about .about-partners__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-about .about-partners__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.page-about .about-partners__figure:hover img {
  transform: scale(1.02);
}

/* ===== 结尾提示 ===== */
.page-about .about-note {
  padding: 2.5rem 0 3.5rem;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(255, 215, 0, 0.04) 45%, transparent 75%);
}

.page-about .about-note__text {
  max-width: 640px;
  margin: 0 auto 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.page-about .about-note__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 2.5rem;
  font-family: var(--font-data);
  font-size: 0.875rem;
}

.page-about .about-note__links a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about .about-note__links a:hover {
  color: var(--color-gold);
}

/* ===== 桌面端增强 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 5rem 0 6rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
  }

  .page-about .about-hero__figure::before {
    top: -0.75rem;
    right: -0.75rem;
  }

  .page-about .about-story {
    padding: 6rem 0;
  }

  .page-about .about-story__body {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
  }

  .page-about .about-story__stats {
    gap: 1.125rem;
  }

  .page-about .about-milestones {
    padding: 6rem 0;
  }

  .page-about .about-milestones__layout {
    grid-template-columns: 1fr 0.85fr;
    gap: 3.5rem;
  }

  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 4.5rem 1fr;
    gap: 1.125rem;
  }

  .page-about .about-timeline__year {
    margin-bottom: 0;
    text-align: right;
    background: none;
    border: none;
    padding: 0.35rem 0 0;
  }

  .page-about .about-certs {
    padding: 6rem 0;
  }

  .page-about .about-certs__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .page-about .about-certs__card:nth-child(2) {
    margin-top: 1.5rem;
  }

  .page-about .about-certs__card:nth-child(3) {
    margin-top: 0.75rem;
  }

  .page-about .about-partners {
    padding: 6rem 0;
  }

  .page-about .about-partners__grid {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
  }

  .page-about .about-note {
    padding: 3rem 0 4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    transform: none !important;
  }
}