.page-about {
  background: var(--c-cream);
}

/* ---------- 刊头 Hero ---------- */
.page-about__hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 72px;
  background: var(--c-deep);
  color: var(--c-cream);
}

.page-about__hero::before {
  content: "";
  position: absolute;
  right: -90px;
  top: 6%;
  width: 220px;
  height: 220px;
  background: var(--c-green);
  border: var(--border-w) solid var(--c-gold);
  transform: rotate(16deg);
  opacity: .75;
}

.page-about__hero::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -80px;
  width: 180px;
  height: 180px;
  border: 3px solid rgba(212, 175, 55, .4);
  transform: rotate(28deg);
}

.page-about__hero-inner {
  position: relative;
  z-index: 1;
}

.page-about__breadcrumbs {
  margin-bottom: 30px;
  font-size: 13px;
  letter-spacing: .05em;
  color: rgba(245, 242, 232, .6);
}

.page-about__breadcrumbs .breadcrumbs__link {
  color: var(--c-gold-bright);
  text-decoration: none;
  font-weight: 600;
}

.page-about__breadcrumbs [aria-current="page"] {
  color: rgba(245, 242, 232, .65);
}

.page-about__crumb-sep {
  margin: 0 10px;
  opacity: .6;
}

.page-about__masthead {
  border-top: 4px solid var(--c-gold);
  border-bottom: 4px solid var(--c-gold);
  padding: 34px 0 30px;
  text-align: center;
}

.page-about__masthead-kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about__masthead-title {
  margin: 0;
  font-size: clamp(42px, 9vw, 82px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.05;
  color: var(--c-cream);
}

.page-about__masthead-subtitle {
  margin: 12px 0 0;
  font-size: clamp(16px, 2.2vw, 22px);
  font-weight: 600;
  color: var(--c-gold-bright);
}

.page-about__hero-desc {
  margin: 42px 0 0 auto;
  max-width: 680px;
  border-left: 5px solid var(--c-gold);
  padding-left: 26px;
}

.page-about__hero-desc>p {
  margin: 0 0 18px;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(245, 242, 232, .92);
}

.page-about__hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about__tag-hero {
  background: transparent;
  border: 2px solid rgba(245, 242, 232, .55);
  color: var(--c-cream);
}

.page-about__tag-hero--gold {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-deep);
  font-weight: 700;
}

/* ---------- 品牌故事 ---------- */
.page-about__kicker {
  margin-bottom: 8px;
}

.page-about__story-grid {
  display: grid;
  gap: 36px;
}

@media (min-width: 900px) {
  .page-about__story-grid {
    grid-template-columns: 1.15fr .85fr;
    gap: 56px;
    align-items: center;
  }
}

.page-about__story-copy>p {
  margin: 0 0 18px;
  line-height: 1.78;
  color: #33413a;
}

.page-about__story-quote {
  margin: 26px 0;
  padding: 18px 20px 18px 26px;
  border-left: 6px solid var(--c-gold);
  background: #ece8d9;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-deep);
}

.page-about__story-link {
  font-weight: 500;
}

.page-about__link {
  color: var(--c-green);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color .3s ease;
}

.page-about__link:hover,
.page-about__link:focus-visible {
  color: var(--c-gold);
}

.page-about__link--light {
  color: var(--c-gold-bright);
}

.page-about__story-media {
  margin: 0;
}

.page-about__story-media img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--border-w) solid var(--c-deep);
  box-shadow: var(--shadow-hard);
}

.page-about__media-cap {
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-muted);
}

/* ---------- 发展里程碑 ---------- */
.page-about__milestones {
  position: relative;
  background: var(--c-deep);
  color: var(--c-cream);
}

.page-about__milestones::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--c-gold) 0 28px, var(--c-deep) 28px 56px);
}

.page-about__milestones-head {
  margin-bottom: 46px;
}

.page-about__kicker--light {
  color: var(--c-gold);
}

.page-about__section-title--light {
  color: var(--c-cream);
}

.page-about__section-desc--light {
  color: rgba(245, 242, 232, .7);
}

.page-about__timeline {
  position: relative;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: var(--c-gold);
}

@media (min-width: 768px) {
  .page-about__timeline::before {
    left: 33px;
  }
}

.page-about__tl-item {
  position: relative;
  padding-left: 44px;
  margin-bottom: 22px;
}

@media (min-width: 768px) {
  .page-about__tl-item {
    padding-left: 68px;
  }
}

.page-about__tl-rail {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 44px;
}

@media (min-width: 768px) {
  .page-about__tl-rail {
    width: 68px;
  }
}

.page-about__tl-dot {
  position: absolute;
  left: 50%;
  top: 26px;
  transform: translateX(-50%);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-deep);
  border: 4px solid var(--c-gold);
}

.page-about__tl-dot--gold {
  background: var(--c-gold);
}

.page-about__tl-card {
  background: rgba(20, 107, 74, .42);
  border: 2px solid rgba(245, 242, 232, .3);
  transition: border-color .3s ease, background .3s ease;
}

.page-about__tl-card:hover,
.page-about__tl-item.is-open .page-about__tl-card {
  border-color: var(--c-gold);
  background: rgba(20, 107, 74, .68);
}

.page-about__tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 18px 20px;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: var(--c-cream);
  font-family: var(--font-ui);
}

.page-about__tl-year {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .05em;
  color: var(--c-gold);
  border: 2px solid var(--c-gold);
  padding: 4px 10px;
}

.page-about__tl-title {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.page-about__tl-toggle {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 2px solid var(--c-gold);
  color: var(--c-gold);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  transition: transform .3s ease, background .3s ease, color .3s ease;
}

.page-about__tl-item.is-open .page-about__tl-toggle {
  transform: rotate(45deg);
  background: var(--c-gold);
  color: var(--c-deep);
}

.page-about__tl-panel {
  display: none;
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(245, 242, 232, .88);
}

.page-about__tl-item.is-open .page-about__tl-panel {
  display: block;
}

.page-about__tl-panel p {
  margin: 0;
}

.page-about__tl-panel a {
  color: var(--c-gold-bright);
  font-weight: 600;
}

/* ---------- 技术架构 ---------- */
.page-about__tech-grid {
  display: grid;
  gap: 40px;
}

@media (min-width: 992px) {
  .page-about__tech-grid {
    grid-template-columns: .9fr 1.1fr;
    gap: 60px;
    align-items: center;
  }
}

.page-about__tech-media {
  margin: 0;
}

.page-about__tech-media img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--border-w) solid var(--c-deep);
  box-shadow: var(--shadow-hard);
}

.page-about__tech-copy>p {
  margin: 0 0 18px;
  line-height: 1.78;
  color: #33413a;
}

.page-about__tech-list {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about__tech-list li {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  align-items: start;
  padding: 14px 16px;
  border: 2px solid var(--c-deep);
  background: #ffffff;
}

.page-about__tech-label {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  line-height: 1.4;
  color: var(--c-green);
}

.page-about__tech-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-ink);
}

.page-about__tech-diagram {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  margin: 20px 0 24px;
  border: var(--border-w) solid var(--c-deep);
  background: var(--c-cream);
}

.page-about__tech-more {
  margin-top: 20px;
  font-weight: 500;
}

/* ---------- 数据团队 ---------- */
.page-about__team {
  background: var(--c-cream);
  border-top: 6px solid var(--c-deep);
}

.page-about__team-head {
  margin-bottom: 32px;
}

.page-about__team-grid {
  margin-top: 36px;
  gap: 24px;
}

.page-about__team-card {
  position: relative;
  margin: 0;
}

.page-about__team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--c-gold);
}

.page-about__team-num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 44px;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--c-green);
  margin-bottom: 12px;
}

.page-about__team-num span {
  font-size: 20px;
  color: var(--c-gold);
  margin-left: 2px;
}

.page-about__team-title {
  margin-top: 4px;
}

.page-about__team-card .card__body {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.72;
  color: #33413a;
}

/* ---------- 行业认可与用户规模 ---------- */
.page-about__recognition-band {
  display: grid;
  gap: 32px;
  padding: 40px 28px;
  background: var(--c-deep);
  color: var(--c-cream);
  border: var(--border-w) solid var(--c-deep);
  box-shadow: var(--shadow-hard);
}

@media (min-width: 992px) {
  .page-about__recognition-band {
    grid-template-columns: 1.15fr .85fr;
    gap: 48px;
    padding: 48px 44px;
    align-items: center;
  }
}

.page-about__recognition-band .section-kicker {
  color: var(--c-gold);
}

.page-about__recognition-band .section-title {
  color: var(--c-cream);
}

.page-about__recognition-copy>p {
  margin: 0 0 18px;
  line-height: 1.78;
  color: rgba(245, 242, 232, .88);
}

.page-about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 28px;
}

.page-about__stat {
  padding: 18px 14px;
  text-align: center;
  border: 2px solid rgba(245, 242, 232, .4);
  background: rgba(20, 107, 74, .38);
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.1;
  color: var(--c-gold-bright);
}

.page-about__stat-num span {
  font-size: 18px;
  color: var(--c-gold);
  margin-left: 2px;
}

.page-about__stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(245, 242, 232, .7);
}

.page-about__recognition-media {
  margin: 0;
  justify-self: center;
  text-align: center;
}

.page-about__recognition-media img {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  border: 3px solid var(--c-gold);
  background: var(--c-green);
}

.page-about__recognition-media .page-about__media-cap {
  color: rgba(245, 242, 232, .62);
  text-align: center;
}

.page-about__growth {
  margin-top: 56px;
  padding: 32px 24px;
  border: var(--border-w) solid var(--c-deep);
  box-shadow: var(--shadow-hard);
  background: var(--c-cream);
}

@media (min-width: 768px) {
  .page-about__growth {
    padding: 40px 36px;
  }
}

.page-about__growth-title {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 800;
}

.page-about__growth-note {
  margin: 0 0 24px;
  font-size: 13px;
  color: var(--c-muted);
}

.page-about__growth-row {
  display: grid;
  grid-template-columns: 64px 1fr 88px;
  align-items: center;
  gap: 14px;
  padding: 10px 8px;
  border-bottom: 1px dashed #c9c2ae;
  transition: background .3s ease;
}

.page-about__growth-row:last-child {
  border-bottom: 0;
}

.page-about__growth-row:hover {
  background: #ede8db;
}

.page-about__growth-year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  color: var(--c-deep);
}

.page-about__growth-bar .progress__bar {
  background: var(--c-grass);
}

.page-about__growth-row:hover .progress__bar {
  background: var(--c-gold);
}

.page-about__growth-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  text-align: right;
  color: var(--c-green);
}

.page-about__recognition-cta {
  margin-top: 40px;
  text-align: center;
  font-size: 16px;
}

.page-about__recognition-cta p {
  margin: 0;
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about__tech-diagram,
  .page-about__tl-card,
  .page-about__tl-toggle,
  .page-about__growth-row,
  .page-about__link {
    transition: none;
  }
}