.page-about {
  background: var(--paper);
  color: var(--black);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: 20px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--rock);
}

.page-about .breadcrumb__link {
  color: var(--rock);
  text-decoration: none;
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--ink-800);
}

.page-about .breadcrumb__sep {
  margin: 0 6px;
  color: var(--gold);
}

.page-about .breadcrumb__current {
  color: var(--ink-800);
  font-weight: 500;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  margin-top: 16px;
  padding: 48px 0 60px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(201, 162, 75, 0.2), transparent 62%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
  color: var(--white);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.6;
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 36px;
}

.page-about .about-hero__eyebrow {
  color: var(--gold-soft);
  margin: 0;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 6.6vw, 58px);
  line-height: 1.18;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.84);
}

.page-about .about-hero__actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-facts {
  padding: 22px 20px 16px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(227, 201, 138, 0.32);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}

.page-about .about-facts__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold-soft);
}

.page-about .about-facts__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-facts__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-facts__item:last-child {
  border-bottom: 0;
}

.page-about .about-facts__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.72);
}

.page-about .about-facts__value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 19px;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .about-facts__ridge {
  display: block;
  width: 100%;
  height: 70px;
  margin-top: 14px;
  opacity: 0.9;
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  position: relative;
  padding: 52px 0 60px;
  background: var(--ink-800);
  color: var(--white);
}

.page-about .about-origin__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .about-origin__eyebrow {
  color: var(--gold-soft);
  margin: 0;
}

.page-about .about-origin__title {
  margin: 12px 0 0;
  color: var(--white);
}

.page-about .about-origin__para {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
}

.page-about .about-origin__points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-about .about-origin__points li {
  position: relative;
  padding-left: 26px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .about-origin__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 14px;
  height: 1px;
  background: var(--gold);
}

.page-about .media-frame {
  margin: 0;
  border: 1px solid rgba(227, 201, 138, 0.28);
  background: var(--ink-900);
}

.page-about .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .media-frame__caption {
  padding: 11px 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.68);
}

.page-about .media-frame--wide .media-frame__img {
  aspect-ratio: 16 / 9;
}

.page-about .media-frame--light {
  background: var(--white);
  border-color: var(--line);
}

.page-about .media-frame--light .media-frame__caption {
  color: var(--rock);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  background: var(--paper);
}

.page-about .about-timeline__fade {
  height: 120px;
  background: linear-gradient(180deg, var(--ink-800) 0%, var(--paper) 100%);
}

.page-about .about-timeline__body {
  padding: 4px 0 64px;
}

.page-about .about-timeline__head .lede {
  max-width: 56ch;
}

.page-about .year-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 34px;
  padding: 0;
}

.page-about .year-jump__link {
  display: inline-block;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink-800);
  text-decoration: none;
  border: 1px solid rgba(201, 162, 75, 0.5);
  border-radius: var(--radius);
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .year-jump__link:hover,
.page-about .year-jump__link:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink-900);
}

.page-about .timeline {
  position: relative;
  display: grid;
  gap: 34px;
  padding-left: 24px;
  border-left: 1px solid rgba(201, 162, 75, 0.45);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 10px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--gold);
}

.page-about .timeline__year {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 9vw, 60px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-about .timeline__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink-800);
}

.page-about .timeline__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--rock);
}

.page-about .timeline__media {
  border-color: var(--line);
  background: var(--ink-800);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: 8px 0 64px;
  background: var(--paper);
}

.page-about .about-team__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-team .lede {
  max-width: 54ch;
}

.page-about .team__list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .team__item {
  padding: 18px 18px 16px;
  background: var(--white);
  border-left: 3px solid var(--gold);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.page-about .team__item--2 { border-left-color: var(--qing); }
.page-about .team__item--3 { border-left-color: var(--flag-green); }
.page-about .team__item--4 { border-left-color: var(--rock); }

.page-about .team__item:hover,
.page-about .team__item:focus-within,
.page-about .team__item:focus-visible {
  transform: translateX(4px);
  box-shadow: var(--shadow-soft);
  outline: none;
}

.page-about .team__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .team__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-800);
}

.page-about .team__count {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .team__bar {
  height: 6px;
  margin: 11px 0 12px;
  background: var(--paper-dim);
  overflow: hidden;
}

.page-about .team__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
}

.page-about .team__item--2 .team__fill {
  background: linear-gradient(90deg, var(--qing), #5BB3BE);
}

.page-about .team__item--3 .team__fill {
  background: linear-gradient(90deg, var(--flag-green), #77A183);
}

.page-about .team__item--4 .team__fill {
  background: linear-gradient(90deg, var(--rock), #8B929C);
}

.page-about .team__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 资质与生态 ---------- */
.page-about .about-trust {
  padding: 52px 0 58px;
  background: var(--paper-dim);
}

.page-about .badges {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .badge {
  padding: 20px 18px 22px;
  background: var(--paper-dim);
  transition: background 0.3s var(--ease);
}

.page-about .badge:hover,
.page-about .badge:focus-within {
  background: var(--paper);
}

.page-about .badge__mark {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .badge__name {
  margin: 8px 0 7px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink-800);
}

.page-about .badge__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.78;
  color: var(--rock);
}

/* ---------- 客户结构 ---------- */
.page-about .about-clients {
  padding: 52px 0 60px;
  background: var(--paper);
}

.page-about .mix {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-about .mix__item {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-about .mix__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .mix__pct {
  font-family: var(--font-mono);
  font-size: 27px;
  font-weight: 600;
  color: var(--ink-800);
  line-height: 1;
}

.page-about .mix__name {
  font-size: 14.5px;
  letter-spacing: 0.04em;
  color: var(--ink-800);
}

.page-about .mix__bar {
  height: 6px;
  margin: 12px 0 10px;
  background: var(--paper-dim);
  overflow: hidden;
}

.page-about .mix__fill {
  display: block;
  height: 100%;
  background: var(--gold);
}

.page-about .mix__item--2 .mix__fill { background: var(--qing); }
.page-about .mix__item--3 .mix__fill { background: var(--flag-green); }
.page-about .mix__item--4 .mix__fill { background: var(--rock); }

.page-about .mix__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 合作方式 ---------- */
.page-about .about-service {
  padding: 52px 0 60px;
  background: var(--paper-dim);
}

.page-about .steps {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .step {
  padding: 22px 20px 24px;
  background: var(--paper-dim);
}

.page-about .step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .step__title {
  margin: 9px 0 7px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-800);
}

.page-about .step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .about-service__panel {
  margin-top: 28px;
  padding: 26px 22px;
  display: grid;
  gap: 18px;
  background: var(--ink-800);
  color: var(--white);
  border-radius: var(--radius);
}

.page-about .about-service__panel-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-about .about-service__panel-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.8);
}

.page-about .about-service__checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-service__checklist .checklist__item {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
}

.page-about .about-service__checklist .checklist__mark {
  color: var(--gold);
  font-family: var(--font-mono);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding: 52px 0 60px;
  background: var(--ink-900);
  border-top: 2px solid var(--gold);
  color: var(--white);
}

.page-about .about-cta__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 4.8vw, 38px);
  line-height: 1.28;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.78);
}

.page-about .about-cta__actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 滚动显现 ---------- */
.page-about .js-reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .badges {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .mix {
    grid-template-columns: 1fr 1fr;
    gap: 26px 36px;
  }

  .page-about .steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 760px) {
  .page-about .timeline__item {
    display: grid;
    grid-template-columns: 118px 1fr;
    gap: 26px;
    align-items: start;
  }

  .page-about .timeline__item::before {
    top: 18px;
  }

  .page-about .timeline__title {
    margin-top: 6px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 64px 0 80px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-origin {
    padding: 64px 0 72px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 52px;
  }

  .page-about .about-timeline__body {
    padding-bottom: 84px;
  }

  .page-about .about-team {
    padding-bottom: 84px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 44px;
  }

  .page-about .team__list {
    grid-template-columns: 1fr 1fr;
    gap: 18px 22px;
  }

  .page-about .about-trust,
  .page-about .about-clients,
  .page-about .about-service {
    padding-top: 64px;
    padding-bottom: 72px;
  }

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

  .page-about .about-service__panel {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 36px;
    align-items: center;
    padding: 32px 30px;
  }

  .page-about .about-cta {
    padding: 64px 0 72px;
  }
}

@media (min-width: 1060px) {
  .page-about .steps {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .mix {
    gap: 30px 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .js-reveal,
  .page-about .js-reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .team__item,
  .page-about .year-jump__link,
  .page-about .badge {
    transition: none;
  }

  .page-about .team__item:hover,
  .page-about .team__item:focus-within {
    transform: none;
  }
}