.page-about {
  position: relative;
  overflow-x: clip;
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-about .breadcrumb {
  padding-block: clamp(16px, 2.6vw, 26px) 10px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0 clamp(12px, 2.6vw, 32px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: clamp(520px, 58vw, 660px);
  object-fit: cover;
  object-position: center 40%;
  opacity: .74;
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 15, 26, .30) 0%, rgba(10, 15, 26, .52) 40%, rgba(10, 15, 26, .95) 100%),
    radial-gradient(120% 80% at 10% 100%, rgba(200, 162, 75, .18), transparent 62%);
  pointer-events: none;
}

.page-about .about-hero__content {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(24px, 4vw, 48px) var(--gutter);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--gold-lt);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 74px);
  line-height: 1.08;
  letter-spacing: .01em;
  color: var(--moon);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: rgba(244, 240, 230, .84);
}

.page-about .about-hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(18px, 2.8vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--line-soft);
  overflow: hidden;
  list-style: none;
  padding: 0;
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px clamp(12px, 2vw, 20px);
  background: var(--jade);
}

.page-about .about-hero__stat b {
  font-family: var(--font-num);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 500;
  line-height: 1;
  color: var(--gold-lt);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__stat span {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 品牌意象 ---------- */
.page-about .about-idea {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-about .about-idea__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
}

.page-about .about-idea__kicker {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .about-idea__title {
  margin: 0 0 22px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.18;
  color: var(--moon);
  text-wrap: balance;
}

.page-about .about-idea__p {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
  color: rgba(244, 240, 230, .78);
}

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

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

.page-about .about-note {
  position: relative;
  padding: clamp(18px, 2.4vw, 24px) clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--gold-dk);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(30, 42, 61, .78), rgba(19, 28, 46, .86));
}

.page-about .about-note__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.4;
  color: var(--gold-lt);
}

.page-about .about-note__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-idea__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 六个主题厅 ---------- */
.page-about .about-halls {
  padding-block: clamp(48px, 8vw, 96px);
  background:
    linear-gradient(180deg, transparent, rgba(36, 66, 75, .40) 16%, rgba(36, 66, 75, .40) 84%, transparent);
}

.page-about .about-halls__head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-halls__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.18;
  color: var(--moon);
}

.page-about .about-halls__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-halls__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 42px);
}

.page-about .about-halls__visual {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--jade);
}

.page-about .about-halls__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  opacity: .88;
}

.page-about .about-halls__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--gold-lt);
  background: rgba(10, 15, 26, .55);
}

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

.page-about .about-hall {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 7px;
  padding: clamp(18px, 2.4vw, 24px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-hall:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hall__num {
  grid-row: 1 / 3;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  padding-top: 4px;
}

.page-about .about-hall__name {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.3;
  color: var(--moon);
}

.page-about .about-hall__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

@media (min-width: 880px) {
  .page-about .about-halls__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-about .about-halls__visual {
    position: sticky;
    top: 112px;
  }
}

/* ---------- 发展时间线 ---------- */
.page-about .about-journey {
  padding-block: clamp(48px, 8vw, 100px);
}

.page-about .about-journey__head {
  max-width: 60ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-journey__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.18;
  color: var(--moon);
  text-wrap: balance;
}

.page-about .about-journey__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-journey__wrap {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-about .about-journey__rail {
  display: none;
}

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

.page-about .about-stage {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 46px) clamp(20px, 2.6vw, 32px);
  border-left: 1px solid var(--line-soft);
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(200, 162, 75, .13);
}

.page-about .about-stage:last-child {
  padding-bottom: 0;
}

.page-about .about-stage__year {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--gold-lt);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stage__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(19px, 2.1vw, 26px);
  line-height: 1.34;
  color: var(--moon);
}

.page-about .about-stage__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 240, 230, .76);
}

.page-about .about-stage__gain {
  margin: 0;
  padding-left: 14px;
  border-left: 1px solid var(--gold-dk);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gold-lt);
}

@media (min-width: 960px) {
  .page-about .about-journey__wrap {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-journey__rail {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: 124px;
    padding-top: 4px;
  }

  .page-about .about-journey__year {
    position: relative;
    padding-left: 16px;
    font-family: var(--font-num);
    font-size: 13px;
    letter-spacing: .12em;
    color: var(--gold-dk);
    text-decoration: none;
    font-variant-numeric: tabular-nums;
    transition: color 160ms ease;
  }

  .page-about .about-journey__year::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 8px;
    height: 1px;
    background: currentColor;
    transform: translateY(-50%);
    transition: width 160ms ease;
  }

  .page-about .about-journey__year:hover,
  .page-about .about-journey__year:focus-visible {
    color: var(--gold-lt);
  }

  .page-about .about-journey__year:hover::before,
  .page-about .about-journey__year:focus-visible::before {
    width: 12px;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-about .about-team__head {
  max-width: 60ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-team__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.18;
  color: var(--moon);
}

.page-about .about-team__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  align-items: start;
}

.page-about .about-team__card {
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(30, 42, 61, .82), rgba(19, 28, 46, .9));
}

.page-about .about-team__card--content {
  border-color: var(--line);
  background:
    radial-gradient(110% 90% at 100% 0%, rgba(200, 162, 75, .12), transparent 58%),
    linear-gradient(180deg, rgba(30, 42, 61, .9), rgba(19, 28, 46, .94));
}

.page-about .about-team__card--service {
  border-left: 2px solid var(--turquoise);
}

.page-about .about-team__name {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 2.1vw, 26px);
  line-height: 1.3;
  color: var(--gold-lt);
}

.page-about .about-team__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 240, 230, .78);
}

.page-about .about-team__link {
  color: var(--gold-lt);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-dk);
  transition: border-color 160ms ease;
}

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

.page-about .about-team__visual {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--jade);
}

.page-about .about-team__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .84;
}

.page-about .about-team__visual figcaption {
  padding: 11px 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--mist);
  background: rgba(10, 15, 26, .5);
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-about .about-team__card--product {
    grid-column: span 5;
  }

  .page-about .about-team__card--content {
    grid-column: span 7;
  }

  .page-about .about-team__visual {
    grid-column: span 7;
  }

  .page-about .about-team__card--service {
    grid-column: span 5;
  }
}

/* ---------- 合作与认可（浅色反转区） ---------- */
.page-about .about-trust {
  padding-block: clamp(48px, 8vw, 92px);
  background: var(--paper);
  border-block: 1px solid rgba(124, 97, 34, .35);
  color: var(--ink);
}

.page-about .about-trust__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-about .about-trust__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.18;
  color: var(--ink);
}

.page-about .about-trust__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(10, 15, 26, .68);
}

.page-about .about-trust__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(10, 15, 26, .16);
  border-radius: var(--radius-md);
  background: rgba(10, 15, 26, .16);
  overflow: hidden;
}

.page-about .about-trust__figure {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 30px);
  background: var(--paper);
}

.page-about .about-trust__num {
  font-family: var(--font-num);
  font-size: clamp(34px, 4.6vw, 54px);
  font-weight: 500;
  line-height: 1;
  color: var(--gold-dk);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.page-about .about-trust__label {
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(10, 15, 26, .72);
}

.page-about .about-trust__foot {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 70ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(10, 15, 26, .7);
}

@media (min-width: 800px) {
  .page-about .about-trust__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 会员 ---------- */
.page-about .about-member {
  padding-block: clamp(48px, 8vw, 96px);
}

.page-about .about-member__panel {
  position: relative;
  padding: clamp(24px, 4vw, 50px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(200, 162, 75, .18), transparent 58%),
    linear-gradient(180deg, rgba(30, 42, 61, .94), rgba(19, 28, 46, .97));
  box-shadow: var(--shadow-2);
}

.page-about .about-member__intro {
  max-width: 66ch;
}

.page-about .about-member__title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(25px, 3.2vw, 42px);
  line-height: 1.18;
  color: var(--moon);
}

.page-about .about-member__lede {
  margin: 0;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.85;
  color: rgba(244, 240, 230, .8);
}

.page-about .about-member__tiers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 22px);
  list-style: none;
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 0;
}

.page-about .about-member__tier {
  position: relative;
  padding: 12px 0 12px 18px;
}

.page-about .about-member__tier::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold-lt), var(--gold-dk));
}

.page-about .about-member__tier:nth-child(1)::before {
  width: 2px;
  opacity: .5;
}

.page-about .about-member__tier:nth-child(2)::before {
  width: 3px;
  opacity: .68;
}

.page-about .about-member__tier:nth-child(3)::before {
  width: 4px;
  opacity: .84;
}

.page-about .about-member__tier:nth-child(4)::before {
  width: 5px;
  opacity: 1;
}

.page-about .about-member__tier-name {
  display: block;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.3;
  color: var(--moon);
}

.page-about .about-member__tier-note {
  display: block;
  margin-top: 6px;
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-about .about-member__facts {
  display: grid;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 32px);
  padding-top: clamp(20px, 2.6vw, 28px);
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-member__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

@media (min-width: 760px) {
  .page-about .about-member__tiers {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-member__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 560px) {
  .page-about .about-hero__meta {
    grid-template-columns: 1fr;
  }

  .page-about .about-hero__stat {
    flex-direction: row;
    align-items: baseline;
    gap: 10px;
  }

  .page-about .about-hall {
    grid-template-columns: 34px minmax(0, 1fr);
    column-gap: 10px;
  }

  .page-about .about-team__card,
  .page-about .about-member__panel {
    border-radius: var(--radius-sm);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-journey__year,
  .page-about .about-journey__year::before,
  .page-about .about-team__link {
    transition: none;
  }
}