.page-about {
  --about-gap: 22px;
  --about-rule: 2px solid var(--c-ink);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding: 14px 18px 10px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 46px;
  background: var(--c-stone);
  border-bottom: var(--about-rule);
}

.page-about .about-hero__annot {
  position: absolute;
  top: 34px;
  right: 14px;
  writing-mode: vertical-rl;
  font-size: .7rem;
  letter-spacing: .34em;
  color: var(--c-sand);
  text-transform: uppercase;
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: end;
}

.page-about .about-hero__kicker {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  background: var(--c-lake);
  color: var(--c-snow);
  font-size: .74rem;
  letter-spacing: .16em;
  border: var(--about-rule);
  box-shadow: 4px 4px 0 var(--c-sand);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(2.4rem, 10.5vw, 5.2rem);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.02em;
  color: var(--c-ink);
  max-width: 14ch;
}

.page-about .about-hero__title span {
  display: block;
}

.page-about .about-hero__title span:last-child {
  color: var(--c-lake);
}

.page-about .about-hero__lead {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: clamp(1rem, 2.6vw, 1.1rem);
  line-height: 1.72;
  color: var(--c-ink);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-hero__stats li {
  background: var(--c-snow);
  border: var(--about-rule);
  box-shadow: 4px 4px 0 var(--c-teal);
  padding: 12px 10px;
}

.page-about .about-hero__stats .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 5.6vw, 2rem);
  font-weight: 700;
  color: var(--c-lake);
  line-height: 1.1;
}

.page-about .about-hero__stats span {
  display: block;
  margin-top: 6px;
  font-size: .76rem;
  line-height: 1.5;
  color: var(--c-ink);
}

.page-about .about-hero__media {
  margin: 0;
  border: var(--about-rule);
  box-shadow: var(--shadow-hard);
}

/* ---------- 品牌故事 ---------- */
.page-about .about-story__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-story__body p {
  margin: 0 0 16px;
  line-height: 1.78;
}

.page-about .about-story__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-story__panel {
  background: var(--c-mist);
  border: var(--about-rule);
  padding: 16px 16px 18px;
  box-shadow: 5px 5px 0 var(--c-ink);
}

.page-about .about-story__panel--alt {
  background: var(--c-lake);
  box-shadow: 5px 5px 0 var(--c-sand);
}

.page-about .about-story__panel--alt .about-story__panel-tag,
.page-about .about-story__panel--alt .about-story__panel-text {
  color: var(--c-snow);
}

.page-about .about-story__panel-tag {
  margin: 0 0 8px;
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--c-wine);
  text-transform: uppercase;
}

.page-about .about-story__panel-text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.65;
  color: var(--c-ink);
}

/* ---------- 六类装备 ---------- */
.page-about .about-gear__bar {
  margin-bottom: 22px;
}

.page-about .about-gear__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-gear__item {
  position: relative;
  padding: 20px 18px 22px;
  border-left: 6px solid var(--c-teal);
  background: var(--c-snow);
}

.page-about .about-gear__item--a { border-left-color: var(--c-teal); }
.page-about .about-gear__item--b { border-left-color: var(--c-lake); }
.page-about .about-gear__item--c { border-left-color: var(--c-sand); }
.page-about .about-gear__item--d { border-left-color: var(--c-indigo); }
.page-about .about-gear__item--e { border-left-color: var(--c-deep); }
.page-about .about-gear__item--f { border-left-color: var(--c-wine); }

.page-about .about-gear__no {
  display: inline-block;
  margin-bottom: 10px;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--c-ink);
  background: var(--c-stone);
  border: 1px solid var(--c-ink);
  padding: 3px 8px;
}

.page-about .about-gear__item .card__title {
  margin: 0 0 8px;
  font-size: 1.16rem;
  font-weight: 800;
}

.page-about .about-gear__desc {
  margin: 0;
  font-size: .93rem;
  line-height: 1.68;
  color: var(--c-ink);
}

.page-about .about-gear__more {
  margin: 24px 0 0;
  padding: 14px 16px;
  background: var(--c-snow);
  border: var(--about-rule);
  border-left-width: 8px;
  border-left-color: var(--c-sand);
  font-size: .93rem;
  line-height: 1.7;
}

.page-about .about-gear__more a {
  color: var(--c-lake);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 内容维护流程 ---------- */
.page-about .about-process__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-process__media {
  margin: 0;
  border: var(--about-rule);
  box-shadow: var(--shadow-gold);
}

.page-about .about-process__list {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-process__step {
  background: var(--c-snow);
  border: var(--about-rule);
  box-shadow: 5px 5px 0 var(--c-teal);
}

.page-about .about-process__step .accordion__trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 16px 16px;
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--c-ink);
}

.page-about .about-process__num {
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--c-snow);
  background: var(--c-lake);
  border: 1px solid var(--c-ink);
  padding: 3px 7px;
}

.page-about .about-process__label {
  flex: 1 1 auto;
}

.page-about .about-process__step .accordion__panel {
  padding: 0 16px 18px;
}

.page-about .about-process__step .accordion__panel p {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--c-mist);
  font-size: .94rem;
  line-height: 1.72;
  color: var(--c-ink);
}

/* ---------- 团队与协作 ---------- */
.page-about .about-team {
  color: var(--c-snow);
}

.page-about .about-team__head .section-head__title,
.page-about .about-team__head .section-head__index,
.page-about .about-team__head .section-head__note {
  color: var(--c-snow);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-team__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-team__card {
  padding: 20px 18px 22px;
  border-color: var(--c-ink);
  box-shadow: var(--shadow-hard);
}

.page-about .about-team__card--b {
  box-shadow: 6px 6px 0 var(--c-indigo);
}

.page-about .about-team__card--c {
  box-shadow: 6px 6px 0 var(--c-sand);
}

.page-about .about-team__no {
  display: inline-block;
  margin-bottom: 10px;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--c-ink);
  background: var(--c-mist);
  border: 1px solid var(--c-ink);
  padding: 3px 8px;
}

.page-about .about-team__card .card__title {
  margin: 0 0 8px;
  font-size: 1.14rem;
  font-weight: 800;
}

.page-about .about-team__card p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.68;
  color: var(--c-ink);
}

.page-about .about-team__media {
  margin: 0;
  border: var(--about-rule);
  box-shadow: 6px 6px 0 var(--c-indigo);
}

.page-about .about-team__note {
  margin: 26px 0 0;
  padding: 16px 18px;
  background: var(--c-deep);
  border: var(--about-rule);
  border-left-width: 8px;
  border-left-color: var(--c-sand);
  font-size: .95rem;
  line-height: 1.72;
  color: var(--c-snow);
}

/* ---------- 里程碑 ---------- */
.page-about .about-milestones__head .section-head__title,
.page-about .about-milestones__head .section-head__index,
.page-about .about-milestones__head .section-head__note {
  color: var(--c-snow);
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--c-sand);
}

.page-about .about-timeline__node {
  position: relative;
  margin-bottom: 22px;
}

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

.page-about .about-timeline__dot {
  position: absolute;
  left: -30px;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--c-wine);
  border: 2px solid var(--c-sand);
  transition: transform 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .about-timeline__body {
  background: rgba(255, 255, 255, .05);
  border: 2px solid var(--c-snow);
  padding: 16px 18px 18px;
  transition: background-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .about-timeline__time {
  margin: 0 0 8px;
  font-size: .74rem;
  letter-spacing: .18em;
  color: var(--c-sand);
  text-transform: uppercase;
}

.page-about .about-timeline__body h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--c-snow);
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.7;
  color: var(--c-mist);
}

.page-about .about-timeline__node:hover .about-timeline__dot {
  transform: scale(1.28);
  background: var(--c-sand);
}

.page-about .about-timeline__node:hover .about-timeline__body {
  background: rgba(217, 164, 65, .12);
  transform: translateX(3px);
}

.page-about .about-timeline__node:focus-within .about-timeline__dot {
  transform: scale(1.28);
}

/* ---------- CTA ---------- */
.page-about .about-cta__inner {
  display: grid;
  gap: 18px;
}

.page-about .about-cta__kicker {
  margin: 0 0 10px;
  font-size: .74rem;
  letter-spacing: .18em;
  color: var(--c-wine);
  text-transform: uppercase;
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 6vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--c-ink);
}

.page-about .about-cta__copy p {
  margin: 0 0 8px;
  max-width: 60ch;
  line-height: 1.74;
}

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

.page-about .about-cta__links .btn {
  flex: 1 1 46%;
  text-align: center;
  justify-content: center;
}

.page-about .about-cta__meta {
  margin: 0;
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--c-deep);
  line-height: 1.7;
  word-break: break-word;
}

/* ---------- 焦点可见 ---------- */
.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 3px solid var(--c-sand);
  outline-offset: 2px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-about .about-gear__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-team__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-team__card--b {
    transform: translateY(18px);
  }

  .page-about .about-team__card--c {
    transform: translateY(36px);
  }

  .page-about .about-cta__links .btn {
    flex: 0 0 auto;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 42px 0 60px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 34px;
    align-items: center;
  }

  .page-about .about-hero__annot {
    top: 60px;
    right: 22px;
  }

  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 36px;
  }

  .page-about .about-gear__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-gear__item:nth-child(3n + 2) {
    transform: translateY(14px);
  }

  .page-about .about-process__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 34px;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 34px;
    align-items: start;
  }

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

  .page-about .about-team__card--b {
    transform: translateX(24px);
  }

  .page-about .about-team__card--c {
    transform: translateX(-14px);
  }

  .page-about .about-timeline {
    padding-left: 0;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .about-timeline::before {
    left: 0;
    right: 0;
    top: 8px;
    bottom: auto;
    width: auto;
    height: 2px;
  }

  .page-about .about-timeline__node {
    margin-bottom: 0;
    padding: 0 12px;
  }

  .page-about .about-timeline__dot {
    position: relative;
    left: 0;
    top: 0;
    display: block;
    margin-bottom: 16px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 30px;
    align-items: center;
  }

  .page-about .about-cta__copy {
    grid-column: 1;
  }

  .page-about .about-cta__links {
    grid-column: 2;
  }

  .page-about .about-cta__meta {
    grid-column: 1 / -1;
    padding-top: 6px;
    border-top: 1px solid var(--c-mist);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__dot,
  .page-about .about-timeline__body,
  .page-about .about-gear__item,
  .page-about .about-team__card {
    transition: none;
  }
}