/* ===================== 品牌故事页 /story/ ===================== */
.page-about {
  --about-timeline-line: rgba(15, 111, 255, 0.4);
  --about-timeline-glow: 0 0 0 4px rgba(15, 111, 255, 0.12), 0 0 18px rgba(15, 111, 255, 0.35);
}

/* ---------- 首屏 Hero ---------- */
.page-about .about-hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg);
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 12, 16, 0.78) 0%, rgba(10, 12, 16, 0.42) 42%, rgba(10, 12, 16, 0.96) 100%);
}

.page-about .about-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.page-about .about-hero__content {
  width: 100%;
  padding-top: 136px;
  padding-bottom: 56px;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 2.5rem;
}

.page-about .about-hero .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--fs-small);
  color: var(--text-dim);
}

.page-about .about-hero .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--border);
}

.page-about .about-hero .breadcrumb-list a {
  color: var(--text-dim);
  text-decoration-color: rgba(15, 111, 255, 0.5);
  transition: color 0.2s ease;
}

.page-about .about-hero .breadcrumb-list a:hover {
  color: var(--text);
}

.page-about .about-hero__inner {
  max-width: 920px;
}

.page-about .about-hero__eyebrow {
  margin-bottom: 1rem;
  color: var(--blue);
}

.page-about .about-hero__title {
  font-family: var(--font-headline);
  font-size: var(--fs-display);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.44);
  margin-bottom: 1.25rem;
}

.page-about .about-hero__lead {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--text-dim);
  max-width: 58ch;
  margin-bottom: 2.25rem;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  max-width: 680px;
  margin: 0;
}

.page-about .about-hero__fact {
  background: rgba(18, 22, 29, 0.88);
  backdrop-filter: blur(4px);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-about .about-hero__fact dt {
  font-family: var(--font-headline);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text);
}

.page-about .about-hero__fact dd {
  margin: 0;
  font-size: var(--fs-small);
  color: var(--text-dim);
}

/* ---------- 关于欧博ABG ---------- */
.page-about .about-intro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.page-about .about-intro__main .lead {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 1.5rem;
}

.page-about .about-intro__main p {
  font-family: var(--font-body);
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.page-about .about-intro__aside {
  display: flex;
  flex-direction: column;
}

.page-about .about-intro__card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-top: 3px solid var(--gold);
  padding: 1.5rem;
}

.page-about .about-intro__card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 56px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), transparent);
}

.page-about .about-intro__card .tag {
  margin-bottom: 0.5rem;
  display: inline-block;
}

.page-about .about-intro__value {
  font-family: var(--font-headline);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1.25rem;
  padding-left: 0.25rem;
}

.page-about .about-intro__note {
  font-size: var(--fs-small);
  line-height: 1.6;
  color: var(--text-dim);
  margin-top: 1rem;
}

/* ---------- 发展历程 ---------- */
.page-about .about-milestones {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 3rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue), var(--orange) 62%, transparent);
  opacity: 0.5;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 44px;
  margin-bottom: 2.5rem;
}

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

.page-about .about-timeline__marker {
  position: absolute;
  top: 0.875rem;
  left: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-panel);
  border: 2px solid var(--blue);
  box-shadow: var(--about-timeline-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-headline);
  font-size: 0.625rem;
  font-weight: 800;
  color: var(--text);
  z-index: 2;
}

.page-about .about-timeline__card {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 1.5rem;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-timeline__card:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
  box-shadow: 0 12px 32px rgba(15, 111, 255, 0.18);
}

.page-about .about-timeline__card .tag {
  display: inline-block;
  margin-bottom: 0.875rem;
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-headline);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin: 0 0 0.625rem;
}

.page-about .about-timeline__card p {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text-dim);
  margin: 0;
}

.page-about .about-timeline__figure {
  position: relative;
  margin: 0 0 2.5rem;
}

.page-about .about-timeline__figure figure {
  margin: 0;
}

.page-about .about-timeline__figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.page-about .about-timeline__figure figcaption {
  margin-top: 0.625rem;
  font-size: var(--fs-small);
  color: var(--text-dim);
}

/* ---------- 品牌理念 ---------- */
.page-about .about-values__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding-top: 1rem;
}

.page-about .about-values__card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2rem 1.5rem 1.75rem;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-values__card:hover {
  transform: translateY(-4px);
  border-color: rgba(15, 111, 255, 0.6);
  box-shadow: 0 14px 32px rgba(15, 111, 255, 0.14);
}

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

.page-about .about-values__num {
  display: inline-block;
  font-family: var(--font-headline);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--gold);
  padding: 0.25rem 0.5rem;
  border: 1px solid rgba(201, 162, 39, 0.45);
  border-radius: 2px;
  margin-bottom: 1rem;
}

.page-about .about-values__card h3 {
  font-family: var(--font-headline);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.75rem;
}

.page-about .about-values__card p {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text-dim);
  margin: 0;
}

/* ---------- 中国本地化服务 ---------- */
.page-about .about-local {
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.page-about .about-local__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.page-about .about-local__media img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.page-about .about-local__content .lead {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 1.5rem;
}

.page-about .about-local__list {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: grid;
  gap: 0.875rem;
}

.page-about .about-local__list li {
  position: relative;
  padding-left: 1.5rem;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text-dim);
}

.page-about .about-local__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--blue);
  transform: rotate(45deg);
}

.page-about .about-local__list strong {
  color: var(--text);
  font-weight: 600;
}

.page-about .about-local__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 1.75rem;
}

.page-about .about-local__stat {
  background: var(--bg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-about .about-local__stat-num {
  font-family: var(--font-headline);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text);
}

.page-about .about-local__stat-label {
  font-size: var(--fs-small);
  color: var(--text-dim);
}

.page-about .about-local__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

/* ---------- 品牌索引中心 ---------- */
.page-about .about-brand__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-brand__link {
  display: block;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
  text-decoration: none;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-about .about-brand__link:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: 0 12px 28px rgba(201, 162, 39, 0.16);
}

.page-about .about-brand__link .tag {
  display: inline-block;
}

.page-about .about-brand__link h3 {
  font-family: var(--font-headline);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text);
  margin: 0.625rem 0 0.375rem;
}

.page-about .about-brand__link p {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  color: var(--text-dim);
  margin: 0;
}

.page-about .about-brand__trust {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-body);
  font-size: var(--fs-small);
  color: var(--text-dim);
  text-align: center;
}

/* ---------- 动效：滚动显现 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .page-about [data-reveal] {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.55s ease, transform 0.55s ease;
  }

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

/* ---------- 响应式：平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    min-height: 92vh;
  }

  .page-about .about-hero__content {
    padding-bottom: 72px;
  }

  .page-about .about-hero__lead {
    font-size: 1.25rem;
  }

  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-hero__fact {
    padding: 1.25rem 1.5rem;
  }

  .page-about .about-hero__fact dt {
    font-size: 2rem;
  }

  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
    align-items: start;
    gap: 3.5rem;
  }

  .page-about .about-values__grid {
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
    gap: 1.5rem;
  }

  .page-about .about-values__card:nth-child(2),
  .page-about .about-values__card:nth-child(4) {
    margin-top: 2rem;
  }

  .page-about .about-values__card:nth-child(3) {
    margin-top: -1rem;
  }

  .page-about .about-local__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
    gap: 3rem;
  }

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

/* ---------- 响应式：桌面 ---------- */
@media (min-width: 960px) {
  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-timeline__item {
    width: calc(50% - 48px);
    padding-left: 0;
    margin-bottom: 3rem;
  }

  .page-about .about-timeline__item--left {
    align-self: flex-start;
  }

  .page-about .about-timeline__item--right {
    align-self: flex-end;
  }

  .page-about .about-timeline__item--left .about-timeline__marker {
    left: auto;
    right: -37px;
  }

  .page-about .about-timeline__item--right .about-timeline__marker {
    right: auto;
    left: -37px;
  }

  .page-about .about-timeline__figure {
    width: 100%;
    margin: 0 0 3rem;
  }

  .page-about .about-timeline__figure img {
    object-fit: cover;
    max-height: 480px;
  }

  .page-about .about-timeline__card {
    padding: 1.75rem;
  }

  .page-about .about-values__grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 2rem;
    row-gap: 1rem;
  }

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