.page-about {
  --about-line-gold: rgba(212, 175, 55, .55);
  --about-timeline-gap: 28px;
  --about-timeline-node: 34px;
  font-family: var(--font-body);
  color: var(--c-ink);
  background: var(--c-white);
}

.page-about .container {
  width: min(var(--container), 100% - 2 * var(--gutter));
  margin-inline: auto;
}

/* ============ 首屏 hero ============ */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 64px) 0 80px;
  background:
    radial-gradient(circle at 82% 18%, rgba(212, 175, 55, .12), transparent 30%),
    linear-gradient(135deg, var(--c-blue) 0%, var(--c-blue-dark) 58%, var(--c-blue-light) 100%);
  color: var(--c-white);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 42px), 0 100%);
}

.page-about .about-hero__silhouette {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 180px;
  pointer-events: none;
  z-index: 0;
  opacity: .8;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
}

.page-about .about-hero__content {
  max-width: 720px;
}

.page-about .about-hero .breadcrumb {
  color: rgba(255, 255, 255, .7);
}

.page-about .about-hero .breadcrumb a {
  color: rgba(255, 255, 255, .85);
}

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

.page-about .about-hero .eyebrow {
  color: var(--c-gold-soft);
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.1rem, 5vw, 3.75rem);
  line-height: 1.1;
  margin: 18px 0 22px;
  letter-spacing: .02em;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.9;
  max-width: 620px;
  color: rgba(255, 255, 255, .86);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 30px;
}

.page-about .about-hero__actions .btn-gold {
  border-color: var(--c-gold);
  background: linear-gradient(135deg, var(--c-gold), #b8942c);
}

.page-about .about-hero__actions .btn-ghost {
  border-color: rgba(255, 255, 255, .45);
  color: var(--c-white);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .14);
}

.page-about .about-hero__key {
  font-family: var(--font-head);
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .58);
}

.page-about .about-hero__value {
  font-family: var(--font-num);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-gold);
  margin-top: 6px;
}

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

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  right: -12px;
  bottom: -12px;
  width: 56%;
  height: 56%;
  border: 1px solid var(--c-gold);
  transform: skew(-4deg) rotate(1.2deg);
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
  z-index: 1;
}

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

/* ============ 品牌故事 ============ */
.page-about .about-story {
  padding: 96px 0 88px;
}

.page-about .about-story__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-story__intro h2,
.page-about .about-timeline__header h2,
.page-about .about-services__header h2,
.page-about .about-awards__header h2,
.page-about .about-more__title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  line-height: 1.2;
  color: var(--c-blue);
  margin: 12px 0 14px;
  letter-spacing: .02em;
}

.page-about .about-story__body > p {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--c-ink);
  margin-bottom: 20px;
}

.page-about .about-story__lead {
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-blue);
}

.page-about .about-story__quote {
  margin: 34px 0;
  padding: 22px 24px 22px 28px;
  border-left: 3px solid var(--c-gold);
  background: var(--c-gray);
  font-family: var(--font-head);
  font-size: 1.125rem;
  color: var(--c-blue);
  line-height: 1.8;
}

/* ============ 发展历程 ============ */
.page-about .about-timeline {
  padding: 96px 0 96px;
}

.page-about .about-timeline__header {
  max-width: 620px;
  margin-bottom: 60px;
}

.page-about .about-timeline__header p:last-child {
  color: var(--c-ink);
  line-height: 1.8;
}

.page-about .about-timeline__track {
  position: relative;
  display: grid;
  gap: var(--about-timeline-gap);
  padding-left: 24px;
}

.page-about .about-timeline__track::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-gold) 0%, var(--c-blue-light) 30%, rgba(10, 31, 68, .2) 70%, var(--c-gold) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  gap: 14px;
}

.page-about .about-timeline__node {
  position: absolute;
  left: -24px;
  top: 2px;
  width: var(--about-timeline-node);
  height: var(--about-timeline-node);
  transform: translateX(-50%);
  z-index: 1;
}

.page-about .about-timeline__node svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.page-about .about-timeline__node circle {
  fill: var(--c-blue);
  stroke: var(--c-gold);
  stroke-width: 2.6;
  stroke-dasharray: 58;
  stroke-dashoffset: 58;
  transition: stroke-dashoffset .7s var(--ease) .3s;
}

.page-about [data-reveal].is-visible .about-timeline__node circle {
  stroke-dashoffset: 0;
}

.page-about .about-timeline__year {
  font-family: var(--font-num);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
  letter-spacing: .02em;
}

.page-about .about-timeline__item:last-child .about-timeline__year {
  color: var(--c-red);
}

.page-about .about-timeline__card {
  padding: 20px 22px;
  transition: box-shadow .3s var(--ease);
}

.page-about .about-timeline__card:hover {
  box-shadow: 0 14px 30px -18px rgba(10, 31, 68, .35);
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--c-blue);
  margin-bottom: 8px;
}

.page-about .about-timeline__card p {
  font-size: .9375rem;
  color: var(--c-ink);
  line-height: 1.75;
  margin: 0;
}

.page-about .about-timeline__footer {
  display: grid;
  gap: 20px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--about-line-gold);
}

.page-about .about-timeline__media {
  margin: 0;
}

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

.page-about .about-timeline__footer p {
  font-size: .9375rem;
  color: var(--c-ink);
  line-height: 1.8;
}

.page-about .about-timeline__footer a {
  color: var(--c-blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* ============ 服务清单 ============ */
.page-about .about-services {
  padding: 96px 0 96px;
}

.page-about .about-services__header {
  max-width: 660px;
  margin-bottom: 54px;
}

.page-about .about-services__header p:last-child {
  line-height: 1.8;
}

.page-about .about-services__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-services__card {
  padding: 28px 26px;
  border-top: 4px solid var(--c-gold);
  position: relative;
  transition: box-shadow .3s var(--ease);
}

.page-about .about-services__card:hover {
  box-shadow: 0 16px 36px -20px rgba(10, 31, 68, .3);
}

.page-about .about-services__card .about-services__tag {
  font-family: var(--font-head);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--c-red);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.page-about .about-services__card h3 {
  font-family: var(--font-head);
  font-size: 1.25rem;
  color: var(--c-blue);
  margin-bottom: 10px;
}

.page-about .about-services__card p {
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--c-ink);
  margin-bottom: 10px;
}

.page-about .about-services__card .about-services__meta {
  font-size: .8125rem;
  color: var(--c-blue-light);
  border-top: 1px dashed var(--about-line-gold);
  padding-top: 10px;
  margin-top: 12px;
}

.page-about .about-services__card .about-services__meta::before {
  content: "凭证";
  font-family: var(--font-head);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--c-gold);
  margin-right: 8px;
}

/* ============ 资质与荣誉 ============ */
.page-about .about-awards {
  padding: 96px 0 96px;
}

.page-about .about-awards__header {
  max-width: 680px;
  margin-bottom: 52px;
}

.page-about .about-awards__header p:last-child {
  line-height: 1.8;
}

.page-about .about-awards__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-awards__card {
  padding: 30px 26px;
  text-align: center;
  border: 1px solid var(--c-gold);
  transition: box-shadow .3s var(--ease), border-color .3s var(--ease);
}

.page-about .about-awards__card:hover {
  box-shadow: 0 22px 48px -22px rgba(10, 31, 68, .36);
  border-color: var(--c-gold-soft);
}

.page-about .about-awards__badge {
  width: 120px;
  height: 120px;
  margin: 0 auto 18px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--c-gold);
  display: grid;
  place-items: center;
  background: var(--c-white);
}

.page-about .about-awards__badge img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.page-about .about-awards__icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  background: var(--c-blue);
  transform: rotate(-6deg);
}

.page-about .about-awards__icon svg {
  width: 44px;
  height: 44px;
  fill: var(--c-gold);
}

.page-about .about-awards__card h3 {
  font-family: var(--font-head);
  font-size: 1.125rem;
  color: var(--c-blue);
  margin-bottom: 10px;
}

.page-about .about-awards__card p {
  font-size: .9rem;
  color: var(--c-ink);
  line-height: 1.75;
  margin: 0;
}

.page-about .about-awards__note {
  margin-top: 34px;
  font-size: .8125rem;
  color: rgba(43, 43, 43, .55);
}

/* ============ 延伸了解 ============ */
.page-about .about-more {
  padding: 88px 0 96px;
}

.page-about .about-more__inner {
  display: grid;
  gap: 28px;
  align-items: center;
  padding: 48px 48px 64px;
  background: linear-gradient(135deg, var(--c-blue), var(--c-blue-dark));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), 0 100%);
}

.page-about .about-more__title {
  color: var(--c-white);
}

.page-about .about-more p {
  color: rgba(255, 255, 255, .78);
  line-height: 1.8;
}

.page-about .about-more p a {
  color: var(--c-gold);
  text-underline-offset: 3px;
}

.page-about .about-more__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-more__actions .btn-dark {
  background: var(--c-gold);
  border-color: var(--c-gold);
}

.page-about .about-more__actions .btn-ghost {
  border-color: rgba(255, 255, 255, .5);
  color: var(--c-white);
}

/* ============ iPad / 桌面 媒体查询 ============ */
@media (min-width: 860px) {
  .page-about .about-hero {
    padding: calc(var(--header-h) + 72px) 0 100px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1fr 0.76fr;
    gap: 60px;
    align-items: center;
  }

  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, auto);
    gap: 48px;
  }

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

  .page-about .about-story__intro {
    position: sticky;
    top: calc(var(--header-h) + 40px);
    align-self: start;
  }

  .page-about .about-timeline__track {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0;
    padding-left: 0;
    padding-top: 56px;
  }

  .page-about .about-timeline__track::before {
    left: 0;
    right: 0;
    top: 21px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(to right, var(--c-gold) 0%, var(--c-blue-light) 45%, rgba(10, 31, 68, .2) 78%, var(--c-gold) 100%);
  }

  .page-about .about-timeline__item {
    display: block;
    padding: 0 16px;
  }

  .page-about .about-timeline__node {
    left: 50%;
    top: -56px;
    transform: translateX(-50%);
  }

  .page-about .about-timeline__node circle {
    fill: var(--c-white);
  }

  .page-about .about-timeline__year {
    text-align: left;
    font-size: 1.75rem;
  }

  .page-about .about-timeline__card {
    min-height: 170px;
  }

  .page-about .about-timeline__footer {
    grid-template-columns: 260px 1fr;
    gap: 32px;
    align-items: center;
  }

  .page-about .about-timeline__media img {
    height: 200px;
    object-fit: cover;
  }

  .page-about .about-services__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
  }

  .page-about .about-awards__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
  }

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

/* ============ 滚动显现与 reduced motion ============ */
.js .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}

.js .page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.js .page-about [data-reveal-delay="1"] { transition-delay: .1s; }
.js .page-about [data-reveal-delay="2"] { transition-delay: .2s; }
.js .page-about [data-reveal-delay="3"] { transition-delay: .3s; }
.js .page-about [data-reveal-delay="4"] { transition-delay: .4s; }
.js .page-about [data-reveal-delay="5"] { transition-delay: .5s; }

@media (prefers-reduced-motion: reduce) {
  .js .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .about-timeline__node circle {
    stroke-dashoffset: 0;
    transition: none;
  }
}