.page-about {
  --about-hair: linear-gradient(90deg, rgba(184, 135, 59, 0), rgba(184, 135, 59, .6) 14%, rgba(217, 179, 108, .9) 50%, rgba(184, 135, 59, .6) 86%, rgba(184, 135, 59, 0));
  --about-cream-line: rgba(247, 242, 232, .22);
  overflow-wrap: break-word;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--about-hair);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.4rem, 4vw, 3rem);
  margin-top: clamp(1.2rem, 3vw, 2rem);
}

@media (min-width: 62rem) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

.page-about .about-hero__title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.85rem, 5.2vw, 3.05rem);
  line-height: 1.18;
  letter-spacing: .01em;
  color: var(--ink);
  margin: .55rem 0 .9rem;
}

.page-about .about-hero__lede {
  max-width: 46ch;
  color: var(--graphite);
}

.page-about .about-hero__alt {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
  font-size: .88rem;
  color: var(--ink);
}

@media (min-width: 34rem) {
  .page-about .about-hero__alt {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }
}

.page-about .about-hero__alt li {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  padding-top: .55rem;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__alt-k {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--gold);
}

/* ---------- 图片占位容器 ---------- */
.page-about .about-plate {
  margin: 0;
}

.page-about .about-plate__img {
  display: block;
  width: 100%;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  border-top: 2px solid var(--gold);
  background: linear-gradient(135deg, rgba(18, 38, 58, .94), rgba(46, 42, 79, .82));
  box-shadow: var(--shadow-plate);
}

.page-about .about-plate__cap {
  margin-top: .6rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--graphite);
}

/* ---------- 命名对照 ---------- */
.page-about .about-naming__lede {
  max-width: 62ch;
}

.page-about .about-naming__body {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
  margin-top: clamp(1.6rem, 3.5vw, 2.6rem);
}

@media (min-width: 62rem) {
  .page-about .about-naming__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

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

.page-about .about-naming__row {
  display: grid;
  gap: .3rem;
  padding: 1.15rem 0 1.15rem 1rem;
  border-left: 2px solid transparent;
  border-top: 1px solid var(--line-soft);
  transition: border-color .28s ease, background-color .28s ease;
}

.page-about .about-naming__row:first-child {
  border-top: 0;
}

.page-about .about-naming__row:hover {
  border-left-color: var(--gold);
  background-color: rgba(184, 135, 59, .06);
}

.page-about .about-naming__k {
  margin: 0;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-about .about-naming__v {
  margin: .1rem 0 0;
  font-family: var(--serif);
  font-size: 1.26rem;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-naming__d {
  margin: .25rem 0 0;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--graphite);
}

@media (min-width: 48rem) {
  .page-about .about-naming__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    column-gap: 1.2rem;
    align-items: start;
  }

  .page-about .about-naming__k {
    grid-row: 1 / span 2;
    padding-top: .35rem;
  }

  .page-about .about-naming__v {
    grid-column: 2;
    margin-top: 0;
  }

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

/* ---------- 三条主线 ---------- */
.page-about .about-lines__head {
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

.page-about .about-lines__title {
  color: var(--ivory);
}

.page-about .about-lines__lede {
  color: rgba(247, 242, 232, .76);
  max-width: 62ch;
}

.page-about .about-lines__rule {
  display: none;
  width: 100%;
  height: 12px;
  margin: 0 0 1.6rem;
}

@media (min-width: 54rem) {
  .page-about .about-lines__rule {
    display: block;
  }
}

.page-about .about-lines__track {
  display: grid;
  gap: 1rem;
}

@media (min-width: 54rem) {
  .page-about .about-lines__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.4rem;
  }
}

.page-about .about-line {
  position: relative;
  padding: 1.5rem 1.25rem;
  border: 1px solid rgba(217, 179, 108, .22);
  border-top: 2px solid var(--gold);
  border-radius: var(--radius);
  background-color: rgba(247, 242, 232, .05);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: border-color .3s ease, background-color .3s ease, transform .3s ease;
}

.page-about .about-line:hover {
  border-color: rgba(217, 179, 108, .5);
  background-color: rgba(247, 242, 232, .09);
  transform: translateY(-2px);
}

.page-about .about-line__num {
  display: block;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--gold-light);
}

.page-about .about-line__title {
  margin: .6rem 0 .65rem;
  font-family: var(--serif);
  font-size: 1.16rem;
  line-height: 1.42;
  color: var(--ivory);
}

.page-about .about-line__text {
  margin: 0;
  font-size: .93rem;
  line-height: 1.85;
  color: rgba(247, 242, 232, .8);
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline__wrap {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

@media (min-width: 62rem) {
  .page-about .about-timeline__wrap {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

.page-about .about-timeline__lede {
  margin: .85rem 0 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--graphite);
  max-width: 34ch;
}

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

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 1.02rem;
  top: .5rem;
  bottom: 1.3rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(184, 135, 59, .9), rgba(184, 135, 59, .08));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 1.7rem 3.1rem;
}

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

.page-about .about-timeline__num {
  position: absolute;
  left: 0;
  top: -.1rem;
  width: 2.05rem;
  height: 2.05rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background-color: var(--ivory);
  color: var(--ink);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .04em;
  box-shadow: 0 6px 16px -10px rgba(18, 38, 58, .6);
}

.page-about .about-timeline__heading {
  margin: 0 0 .35rem;
  font-family: var(--serif);
  font-size: 1.14rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- 资质与荣誉 ---------- */
.page-about .about-credits__grid {
  list-style: none;
  margin: clamp(1.5rem, 3.5vw, 2.4rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 42rem) {
  .page-about .about-credits__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 66rem) {
  .page-about .about-credits__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-credit {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1.4rem 1.25rem 1.35rem;
}

.page-about .about-credit__tag {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  padding: .16rem .45rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--graphite);
}

.page-about .about-credit__num {
  margin: .5rem 0 0;
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--gold);
}

.page-about .about-credit__desc {
  margin: .35rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- 团队与培训 ---------- */
.page-about .about-team__wrap {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
}

@media (min-width: 62rem) {
  .page-about .about-team__wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}

.page-about .about-team__eyebrow {
  color: var(--gold-light);
}

.page-about .about-team__title {
  color: var(--ivory);
}

.page-about .about-team__lede {
  margin: .85rem 0 0;
  font-size: .96rem;
  line-height: 1.85;
  color: rgba(247, 242, 232, .82);
  max-width: 48ch;
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .85rem;
  margin: 1.6rem 0 0;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line-invert);
  border-bottom: 1px solid var(--line-invert);
}

.page-about .about-team__stat {
  margin: 0;
}

.page-about .about-team__label {
  font-size: .78rem;
  letter-spacing: .06em;
  color: rgba(247, 242, 232, .72);
}

.page-about .about-team__num {
  margin: .35rem 0 0;
  font-family: var(--mono);
  font-size: clamp(1.55rem, 4vw, 2.05rem);
  line-height: 1.1;
  color: var(--gold-light);
}

.page-about .about-team__unit {
  font-size: .6em;
  margin-left: .18rem;
  color: rgba(247, 242, 232, .7);
}

.page-about .about-team__list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-about .about-team__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .93rem;
  line-height: 1.8;
  color: rgba(247, 242, 232, .84);
}

.page-about .about-team__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: .55rem;
  height: 1px;
  background-color: var(--gold-light);
}

.page-about .about-team .about-plate__cap {
  color: rgba(247, 242, 232, .72);
}

/* ---------- 合作承诺 ---------- */
.page-about .about-promise__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
}

@media (min-width: 62rem) {
  .page-about .about-promise__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-about .about-promise__eyebrow {
  color: var(--gold-light);
}

.page-about .about-promise__title {
  color: var(--ivory);
}

.page-about .about-promise__lede {
  margin: .85rem 0 0;
  font-size: .95rem;
  line-height: 1.85;
  color: rgba(247, 242, 232, .8);
  max-width: 40ch;
}

.page-about .about-promise__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.5rem;
}

.page-about .about-promise__list {
  margin: 0;
  padding: 0;
}

.page-about .about-promise__row {
  display: grid;
  gap: .3rem;
  padding: 1rem 0;
  border-top: 1px solid rgba(217, 179, 108, .24);
}

.page-about .about-promise__row:first-child {
  border-top: 0;
  padding-top: 0;
}

@media (min-width: 40rem) {
  .page-about .about-promise__row {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    column-gap: 1.2rem;
    align-items: baseline;
  }
}

.page-about .about-promise__k {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--gold-light);
}

.page-about .about-promise__v {
  margin: 0;
  font-size: .94rem;
  line-height: 1.85;
  color: rgba(247, 242, 232, .84);
}

.page-about .about-promise__foot {
  margin: clamp(1.6rem, 3.5vw, 2.4rem) 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(217, 179, 108, .24);
  font-size: .92rem;
  line-height: 1.95;
  color: rgba(247, 242, 232, .78);
}

.page-about .about-promise__link {
  color: var(--gold-light);
  text-decoration: underline;
  text-underline-offset: .22em;
  text-decoration-thickness: 1px;
}

.page-about .about-promise__link:hover {
  color: var(--ivory);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-line,
  .page-about .about-naming__row {
    transition: none;
  }

  .page-about .about-line:hover {
    transform: none;
  }
}