.page-about {
  --about-overlay: linear-gradient(135deg, rgba(11, 61, 46, 0.96) 0%, rgba(11, 61, 46, 0.78) 100%);
  background: var(--cream);
  color: var(--dark);
  overflow-x: hidden;
}

/* ===== 首屏：品牌定位 ===== */
.page-about .about-hero {
  background: var(--green);
  color: #fff;
  position: relative;
  padding: 112px 0 0;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 260px;
  height: 260px;
  background: var(--orange);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  opacity: 0.12;
  pointer-events: none;
}

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

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 48px;
}

.page-about .breadcrumbs a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .breadcrumbs a:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.page-about .breadcrumbs span[aria-current="page"] {
  color: var(--orange);
  font-weight: 600;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.page-about .about-hero__content .eyebrow {
  color: var(--orange);
  font-family: var(--font-data);
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.page-about .about-hero__content .page-title {
  font-family: var(--font-head);
  font-size: clamp(1.875rem, 5vw, 3.5rem);
  line-height: 1.08;
  margin: 0 0 20px;
  text-wrap: balance;
}

.page-about .about-hero__content .lead {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.85);
  max-width: 620px;
  margin-bottom: 40px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.page-about .about-hero__stats .metric-card {
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-radius: 0;
  box-shadow: none;
  padding: 18px 14px;
  backdrop-filter: blur(4px);
}

.page-about .about-hero__stats .metric-label {
  display: block;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-body);
  margin-bottom: 8px;
}

.page-about .about-hero__stats .metric-value {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--orange);
  line-height: 1;
}

.page-about .about-hero__stats .metric-delta {
  display: block;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 8px;
  line-height: 1.4;
}

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

.page-about .about-hero__media-frame {
  aspect-ratio: 2 / 1;
  border: 4px solid rgba(255, 255, 255, 0.22);
  box-shadow: var(--shadow-lg);
  transform: rotate(1deg);
  position: relative;
  overflow: hidden;
  margin: 0;
}

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

.page-about .about-hero__media-frame figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: flex;
  gap: 8px;
  z-index: 2;
}

.page-about .about-hero__media-frame .tag {
  background: var(--green);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 0;
  font-family: var(--font-data);
  font-size: 0.75rem;
  padding: 4px 10px;
}

.page-about .about-hero__media-frame .tag--orange {
  background: var(--orange);
  border-color: var(--orange);
}

.page-about .about-hero__badge {
  position: absolute;
  right: -12px;
  bottom: -20px;
  background: var(--orange);
  color: #fff;
  padding: 14px 22px;
  font-family: var(--font-head);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  z-index: 3;
}

.page-about .about-hero__badge-year {
  font-size: 1.875rem;
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-about .about-hero__badge-text {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.92);
  margin-top: 4px;
  font-family: var(--font-body);
  font-weight: 600;
}

/* ===== 横向品牌关键词带 ===== */
.page-about .about-ticker {
  margin-top: 64px;
  background: var(--orange);
  overflow: hidden;
  padding: 14px 0;
  position: relative;
  z-index: 3;
}

.page-about .about-ticker__track {
  display: flex;
  width: max-content;
  gap: 40px;
  padding-left: 20px;
  white-space: nowrap;
  animation: page-about-ticker 32s linear infinite;
}

.page-about .about-ticker:hover .about-ticker__track {
  animation-play-state: paused;
}

.page-about .about-ticker__track span {
  font-family: var(--font-head);
  color: #fff;
  font-size: 0.9375rem;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 40px;
}

.page-about .about-ticker__track span::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--dark);
  transform: rotate(45deg);
  flex-shrink: 0;
}

@keyframes page-about-ticker {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* ===== 章节通用 ===== */
.page-about .about-section-head {
  max-width: 720px;
  margin-bottom: 52px;
}

.page-about .about-h2 {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  line-height: 1.15;
  margin: 0 0 16px;
  color: var(--dark);
  text-wrap: balance;
}

.page-about .about-section-lead {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--mid);
  max-width: 600px;
  margin: 0;
}

.page-about .eyebrow {
  color: var(--orange);
  font-family: var(--font-data);
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  background: var(--cream);
  padding: 88px 0 104px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  max-width: 780px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--border);
  border-radius: 3px;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 60px;
  padding-bottom: 40px;
}

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

.page-about .about-timeline__marker {
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 42px;
  background: var(--orange);
  border: 4px solid var(--cream);
  box-shadow: 0 0 0 3px var(--orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.page-about .about-timeline__year {
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
}

.page-about .about-timeline__card {
  background: var(--card-white);
  border: 2px solid var(--border);
  border-radius: 0;
  box-shadow: var(--shadow-sm);
  padding: 20px 24px;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.page-about .about-timeline__card::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 24px;
  width: 14px;
  height: 4px;
  background: var(--orange);
}

.page-about .about-timeline__card:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--orange);
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-head);
  font-size: 1.125rem;
  margin: 0 0 8px;
}

.page-about .about-timeline__card p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--mid);
  margin: 0;
}

/* ===== 团队与组织 ===== */
.page-about .about-team {
  background:
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 14px,
      rgba(11, 61, 46, 0.045) 14px,
      rgba(11, 61, 46, 0.045) 28px
    ),
    var(--gray-green);
  padding: 88px 0;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
}

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

.page-about .about-team__media-frame {
  aspect-ratio: 8 / 5;
  border: 4px solid var(--card-white);
  box-shadow: var(--shadow-lg);
  margin: 0;
  overflow: hidden;
  position: relative;
}

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

.page-about .about-team__media-note {
  position: absolute;
  left: -10px;
  bottom: -16px;
  background: var(--green);
  color: #fff;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  max-width: 320px;
}

.page-about .about-team__media-num {
  font-family: var(--font-data);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--orange);
  line-height: 1;
}

.page-about .about-team__media-text {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.85);
}

.page-about .about-team__content .about-section-lead {
  margin-bottom: 32px;
}

.page-about .about-team__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-team__card {
  background: var(--card-white);
  border: 2px solid var(--border);
  border-top: 6px solid var(--orange);
  box-shadow: var(--shadow-sm);
  padding: 22px 20px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.page-about .about-team__num {
  font-family: var(--font-data);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--orange);
  display: block;
  margin-bottom: 10px;
}

.page-about .about-team__card h3 {
  font-family: var(--font-head);
  font-size: 1.125rem;
  margin: 0 0 8px;
}

.page-about .about-team__card p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--mid);
  margin: 0;
}

/* ===== 资质与认证 ===== */
.page-about .about-credentials {
  background:
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 12px,
      rgba(255, 255, 255, 0.025) 12px,
      rgba(255, 255, 255, 0.025) 24px
    ),
    var(--green);
  padding: 96px 0;
  position: relative;
  color: #fff;
  overflow: hidden;
}

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

.page-about .about-credentials__heading .about-h2 {
  color: #fff;
}

.page-about .about-credentials__heading .about-section-lead {
  color: rgba(255, 255, 255, 0.7);
}

.page-about .about-credentials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 48px;
}

.page-about .about-credentials__card {
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.16);
  border-top: 6px solid var(--orange);
  backdrop-filter: blur(6px);
  padding: 28px 24px;
  position: relative;
}

.page-about .about-credentials__card svg {
  width: 44px;
  height: 44px;
  color: var(--orange);
  margin-bottom: 18px;
}

.page-about .about-credentials__card h3 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  margin: 0 0 10px;
  color: #fff;
}

.page-about .about-credentials__card p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 18px;
  line-height: 1.65;
}

.page-about .about-credentials__card .tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.28);
  padding: 4px 10px;
  font-size: 0.75rem;
  font-family: var(--font-body);
  border-radius: 0;
}

.page-about .about-credentials__card .tag--orange {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff;
}

.page-about .about-credentials__trust {
  margin-top: 44px;
  padding: 20px 24px;
  border-left: 6px solid var(--orange);
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.8);
  max-width: 760px;
}

.page-about .about-credentials__shield {
  position: absolute;
  right: -60px;
  bottom: -40px;
  width: 260px;
  margin: 0;
  opacity: 0.2;
  pointer-events: none;
  z-index: 1;
}

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

/* ===== 合作与荣誉 ===== */
.page-about .about-honors {
  background: var(--cream);
  padding: 96px 0 88px;
}

.page-about .about-honors__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: start;
}

.page-about .about-honors__content .about-section-lead {
  margin-bottom: 28px;
}

.page-about .about-honors__list {
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-honors__list li {
  position: relative;
  padding-left: 30px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--dark);
}

.page-about .about-honors__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 16px;
  height: 4px;
  background: var(--orange);
}

.page-about .about-honors__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-honors__wall {
  border: 4px solid var(--dark);
  background: var(--card-white);
  box-shadow: var(--shadow-lg);
  padding: 24px;
}

.page-about .about-honors__wall-title {
  font-family: var(--font-head);
  font-size: 1.375rem;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-honors__wall-title::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 26px;
  background: var(--orange);
}

.page-about .about-honors__items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .about-honors__item {
  border: 2px solid var(--border);
  background: var(--gray-green);
  padding: 20px 14px;
  text-align: center;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  cursor: default;
}

.page-about .about-honors__item:hover {
  transform: translateY(-4px) rotate(-1deg);
  border-color: var(--orange);
  box-shadow: var(--shadow-sm);
}

.page-about .about-honors__item svg {
  width: 32px;
  height: 32px;
  margin-bottom: 10px;
  color: var(--orange);
}

.page-about .about-honors__year {
  display: block;
  font-family: var(--font-data);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.2;
}

.page-about .about-honors__name {
  display: block;
  font-size: 0.8125rem;
  color: var(--mid);
  margin-top: 6px;
  line-height: 1.5;
}

/* ===== 底部 CTA ===== */
.page-about .about-cta {
  background: var(--dark);
  color: #fff;
  padding: 72px 0;
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.page-about .about-cta__text .eyebrow {
  color: var(--orange);
}

.page-about .about-cta__text .about-h2 {
  color: #fff;
  margin-bottom: 12px;
}

.page-about .about-cta__text p:not(.eyebrow):not(.about-h2) {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 480px;
  margin: 0;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-cta__links .button--dark {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff;
}

.page-about .about-cta__links .button {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: #fff;
}

.page-about .about-cta__links .button:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* ===== 通用按钮微调 ===== */
.page-about .button {
  display: inline-block;
  padding: 12px 22px;
  font-family: var(--font-head);
  font-size: 0.875rem;
  text-decoration: none;
  background: var(--orange);
  color: #fff;
  border: 2px solid var(--orange);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.page-about .button:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

.page-about .button--dark {
  background: var(--dark);
  border-color: var(--dark);
  color: #fff;
}

.page-about .button--dark:hover {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff;
}

/* ===== 响应式：桌面端 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding-top: 128px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
  }

  .page-about .about-hero__stats {
    gap: 20px;
  }

  .page-about .about-hero__stats .metric-card {
    padding: 24px 18px;
  }

  .page-about .about-hero__media-frame {
    border-width: 6px;
  }

  .page-about .about-hero__badge {
    right: -18px;
    bottom: -24px;
    padding: 18px 26px;
  }

  .page-about .about-hero__badge-year {
    font-size: 2.25rem;
  }

  .page-about .about-milestones,
  .page-about .about-team {
    padding: 112px 0;
  }

  .page-about .about-timeline {
    margin-left: 0;
  }

  .page-about .about-timeline__item {
    padding-left: 72px;
    padding-bottom: 48px;
  }

  .page-about .about-timeline__marker {
    width: 46px;
    height: 46px;
    left: -2px;
  }

  .page-about .about-timeline__year {
    font-size: 0.8125rem;
  }

  .page-about .about-timeline__card {
    padding: 26px 32px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 64px;
  }

  .page-about .about-team__cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-team__card {
    padding: 24px 20px;
  }

  .page-about .about-team__media-note {
    left: -20px;
    bottom: -24px;
    padding: 18px 24px;
  }

  .page-about .about-credentials {
    padding: 120px 0;
  }

  .page-about .about-credentials__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-credentials__card {
    padding: 32px 28px;
  }

  .page-about .about-credentials__shield {
    width: 340px;
    right: -80px;
    bottom: -60px;
  }

  .page-about .about-honors {
    padding: 112px 0 104px;
  }

  .page-about .about-honors__grid {
    grid-template-columns: 1fr 1fr;
    gap: 72px;
  }

  .page-about .about-honors__wall {
    padding: 32px;
  }

  .page-about .about-honors__items {
    gap: 18px;
  }

  .page-about .about-honors__item {
    padding: 28px 18px;
  }

  .page-about .about-cta {
    padding: 88px 0;
  }

  .page-about .about-cta__inner {
    grid-template-columns: 1fr auto;
    gap: 48px;
  }
}

/* ===== 无障碍动画降级 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-ticker__track {
    animation: none;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .page-about .about-hero__media-frame,
  .page-about .about-hero__badge {
    transform: none;
  }

  .page-about .about-timeline__card:hover,
  .page-about .about-team__card:hover,
  .page-about .about-honors__item:hover,
  .page-about .about-cta__links .button:hover {
    transform: none;
  }
}