.page-about {
  --about-rule: rgba(34, 35, 31, 0.14);
  --about-rule-soft: rgba(34, 35, 31, 0.08);
  --about-gold-line: rgba(198, 161, 91, 0.55);
  --about-pad: clamp(44px, 7vw, 92px);
  background: var(--moon);
  color: var(--char);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(34px, 6vw, 68px);
  border-bottom: 1px solid var(--about-rule);
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(174, 191, 178, 0.34) 0%, rgba(247, 245, 238, 0) 62%),
    var(--moon);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-about .about-hero__no {
  display: flex;
  align-items: center;
  gap: 0.6em;
  margin: 0 0 clamp(12px, 2vw, 18px);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-about .about-hero__no::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  flex: 0 0 auto;
}

.page-about .about-hero__title {
  margin: 0 0 clamp(16px, 2.4vw, 22px);
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.9rem, 6.2vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: 0.02em;
  max-width: 18ch;
}

.page-about .about-hero__lead {
  margin: 0 0 clamp(20px, 3vw, 28px);
  max-width: 46ch;
  color: rgba(34, 35, 31, 0.82);
}

.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 clamp(22px, 3.4vw, 32px);
  padding: 0;
  list-style: none;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.page-about .about-hero__tags li {
  padding: 0.42em 0.8em;
  border: 1px solid var(--about-gold-line);
  color: var(--moss);
  background: rgba(239, 232, 216, 0.5);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

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

.page-about .about-hero__figure::before {
  content: "";
  position: absolute;
  inset: 14px -10px -14px 10px;
  background: var(--paper);
  border: 1px solid var(--about-rule-soft);
  z-index: 0;
}

.page-about .about-hero__img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 9 / 11;
  object-fit: cover;
  border: 1px solid var(--about-rule);
  filter: saturate(0.92);
}

.page-about .about-hero__cap {
  position: relative;
  z-index: 1;
  display: block;
  margin-top: 12px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(34, 35, 31, 0.55);
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  padding-block: var(--about-pad);
}

/* ---------- 起点 ---------- */
.page-about .about-origin__inner {
  display: grid;
  gap: clamp(22px, 4vw, 48px);
}

.page-about .about-origin__idx {
  margin: 0 0 0.9rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-origin__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  line-height: 1.3;
  letter-spacing: 0.02em;
  max-width: 15ch;
}

.page-about .about-origin__body p {
  margin: 0 0 1.1em;
}

.page-about .about-origin__link {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--moss);
  text-decoration: none;
  border-bottom: 1px solid var(--about-gold-line);
  padding-bottom: 0.24em;
}

.page-about .about-origin__link:hover,
.page-about .about-origin__link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  border-block: 1px solid var(--about-rule);
}

.page-about .about-timeline__texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  pointer-events: none;
}

.page-about .about-timeline > .container {
  position: relative;
  z-index: 1;
}

.page-about .about-timeline__head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-timeline__note {
  margin: 0.7rem 0 0;
  font-size: 0.9rem;
  color: rgba(34, 35, 31, 0.66);
}

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

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 22px;
  bottom: 22px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--mist) 70%, rgba(174, 191, 178, 0) 100%);
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 34px;
}

.page-about .about-tl__details {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-tl__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  padding: clamp(16px, 2.6vw, 22px) 0;
  list-style: none;
  cursor: pointer;
  position: relative;
}

.page-about .about-tl__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-tl__summary::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 50%;
  transform: translateY(-50%);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--moon);
  border: 1px solid var(--moss);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-tl__details[open] > .about-tl__summary::before {
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .about-tl__summary:hover::before {
  border-color: var(--gold);
}

.page-about .about-tl__summary:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 4px;
}

.page-about .about-tl__no {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: rgba(34, 35, 31, 0.52);
}

.page-about .about-tl__name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.02rem, 2.4vw, 1.24rem);
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .about-tl__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-left: auto;
}

.page-about .about-tl__mark::before,
.page-about .about-tl__mark::after {
  content: "";
  position: absolute;
  background: var(--moss);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}

.page-about .about-tl__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1.5px;
}

.page-about .about-tl__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1.5px;
}

.page-about .about-tl__details[open] .about-tl__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-about .about-tl__body {
  padding: 0 0 clamp(18px, 2.6vw, 24px);
  max-width: 64ch;
}

.page-about .about-tl__body p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(34, 35, 31, 0.8);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--moon);
}

.page-about .about-team__inner {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .about-team__idx {
  margin: 0 0 0.9rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-team__title {
  margin: 0 0 clamp(14px, 2.4vw, 20px);
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.8vw, 2.2rem);
  line-height: 1.28;
  letter-spacing: 0.02em;
  max-width: 20ch;
}

.page-about .about-team__lead {
  margin: 0 0 clamp(22px, 3.4vw, 34px);
  max-width: 56ch;
}

.page-about .about-team__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-team__card {
  padding: 20px 20px 22px;
  background: var(--moon);
  border: 1px solid var(--about-rule);
  border-left: 3px solid var(--moss);
  box-shadow: var(--shadow-1);
  transition: transform 0.22s var(--ease), border-left-color 0.22s var(--ease);
}

.page-about .about-team__card:nth-child(2) {
  border-left-color: var(--wine);
}

.page-about .about-team__card:nth-child(3) {
  border-left-color: var(--iris);
}

.page-about .about-team__card:nth-child(4) {
  border-left-color: var(--gold);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translateY(-3px);
}

.page-about .about-team__cardno {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: rgba(34, 35, 31, 0.45);
  margin-bottom: 0.5rem;
}

.page-about .about-team__cardtitle {
  margin: 0 0 0.55rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: rgba(34, 35, 31, 0.78);
}

.page-about .about-team__figure {
  margin: 0;
  position: relative;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--about-rule);
}

.page-about .about-team__figure figcaption {
  margin-top: 10px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(34, 35, 31, 0.52);
}

/* ---------- 覆盖与节奏 ---------- */
.page-about .about-reach {
  background: linear-gradient(160deg, var(--moss) 0%, var(--ink) 100%);
  color: var(--moon);
}

.page-about .about-reach .section-head__idx {
  color: var(--coral);
}

.page-about .about-reach .section-head__title {
  color: var(--moon);
}

.page-about .about-reach__head {
  margin-bottom: clamp(26px, 4vw, 42px);
}

.page-about .about-reach__grid {
  display: grid;
  gap: 1px;
  background: var(--rule-light);
  border: 1px solid var(--rule-light);
}

.page-about .about-reach__stat {
  background: rgba(20, 37, 28, 0.92);
  padding: clamp(20px, 3vw, 30px);
  display: grid;
  gap: 0.35rem;
  align-content: start;
}

.page-about .about-reach__num {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 2.9rem);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--gold);
}

.page-about .about-reach__unit {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: rgba(247, 245, 238, 0.72);
}

.page-about .about-reach__stat p {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(247, 245, 238, 0.84);
}

.page-about .about-reach__foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: rgba(247, 245, 238, 0.66);
  padding-left: 1rem;
  border-left: 2px solid var(--gold);
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-eco__inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-eco__idx {
  margin: 0 0 0.9rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-eco__title {
  margin: 0 0 clamp(14px, 2.4vw, 20px);
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.8vw, 2.2rem);
  line-height: 1.28;
  letter-spacing: 0.02em;
  max-width: 22ch;
}

.page-about .about-eco__main > .prose {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 56ch;
}

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

.page-about .about-eco__item {
  padding: 18px 20px;
  border: 1px solid var(--about-rule-soft);
  border-top: 2px solid var(--mist);
}

.page-about .about-eco__item .mono {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--moss);
  margin-bottom: 0.4rem;
}

.page-about .about-eco__item p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.76;
  color: rgba(34, 35, 31, 0.78);
}

.page-about .about-eco__awards {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .about-eco__award {
  padding: 24px 22px;
  border: 1px solid var(--about-gold-line);
  background: var(--paper);
}

.page-about .about-eco__award--offset {
  margin-left: 0;
  border-color: var(--about-rule);
  background: rgba(174, 191, 178, 0.28);
}

.page-about .about-eco__awardyear {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--wine);
  margin-bottom: 0.5rem;
}

.page-about .about-eco__award h3 {
  margin: 0 0 0.5rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .about-eco__award p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.76;
  color: rgba(34, 35, 31, 0.76);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  background: var(--ink);
  color: var(--moon);
  padding-block: clamp(40px, 6vw, 76px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-about .about-cta__title {
  margin: 0 0 0.7rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--moon);
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 52ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(247, 245, 238, 0.78);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-team__card:nth-child(even) {
    margin-top: 26px;
  }

  .page-about .about-reach__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.78fr);
    align-items: start;
  }

  .page-about .about-hero__figure {
    margin-top: clamp(30px, 5vw, 56px);
  }

  .page-about .about-origin__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-about .about-origin__aside {
    position: sticky;
    top: clamp(24px, 4vw, 48px);
  }

  .page-about .about-eco__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-about .about-eco__award--offset {
    margin-left: clamp(20px, 3vw, 40px);
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-about .about-team__inner {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: start;
  }

  .page-about .about-team__figure {
    margin-top: clamp(40px, 6vw, 72px);
  }

  .page-about .about-reach__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-tl__item {
    padding-left: 44px;
  }

  .page-about .about-tl__summary::before {
    left: -44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card,
  .page-about .about-tl__mark::before,
  .page-about .about-tl__mark::after,
  .page-about .about-tl__summary::before {
    transition: none;
  }

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