.page-about {
  --about-rule: rgba(212, 160, 60, .38);
  --about-hair: rgba(78, 12, 20, .14);
  display: block;
  background: var(--cream);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------------- 首屏 ---------------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(22px, 4vw, 38px) 0 clamp(52px, 8vw, 96px);
  background:
    radial-gradient(130% 100% at 10% 0%, var(--pomegranate) 0%, var(--deep-red) 54%, var(--edge) 100%);
  color: var(--cream);
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .26;
  filter: saturate(.85) contrast(1.05);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(122, 18, 28, .5) 0%, rgba(78, 12, 20, .88) 68%, var(--edge) 100%);
}

.page-about .about-hero__trace {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 110px;
  z-index: -1;
  opacity: .55;
  pointer-events: none;
}

.page-about .about-hero__trace svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .about-hero__trace polyline {
  fill: none;
  stroke: var(--gold);
  stroke-width: 1.3;
  vector-effect: non-scaling-stroke;
}

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

.page-about .about-hero .breadcrumb__list {
  color: rgba(246, 240, 228, .7);
  font-size: 13px;
}

.page-about .about-hero .breadcrumb a {
  color: var(--gold-light);
}

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 20px 0 14px;
  font-family: var(--f-serif);
  font-size: 14px;
  letter-spacing: .18em;
  color: var(--gold-light);
}

.page-about .about-hero__kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(29px, 6.2vw, 58px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: #fff;
}

.page-about .about-hero__lede {
  max-width: 36em;
  margin: 0 0 32px;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: rgba(246, 240, 228, .9);
}

.page-about .about-hero__keys {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 42px;
  padding-top: 22px;
  border-top: 1px solid rgba(212, 160, 60, .4);
}

.page-about .about-hero__key {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__key-val {
  font-family: var(--f-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold-light);
}

.page-about .about-hero__key-lab {
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(246, 240, 228, .62);
}

/* ---------------- 定位 ---------------- */
.page-about .about-position__grid {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

.page-about .about-position__quote {
  margin: 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--pomegranate);
  font-family: var(--f-serif);
  font-size: clamp(17px, 2.1vw, 22px);
  line-height: 1.75;
  color: var(--ink);
}

.page-about .about-position__body > p {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--taupe);
  max-width: 40em;
}

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

.page-about .about-position__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--taupe);
}

.page-about .about-position__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 1px;
  background: var(--gold);
}

.page-about .about-position__list strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: 15px;
  color: var(--deep-red);
}

/* ---------------- 历程长卷 ---------------- */
.page-about .about-journey__layout {
  display: grid;
  gap: 40px;
  margin-top: 34px;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(212, 160, 60, .2) 100%);
}

.page-about .about-timeline__node {
  position: relative;
  padding: 0 0 34px;
  transition: transform var(--dur) var(--ease);
}

.page-about .about-timeline__node::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cream);
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(212, 160, 60, .14);
}

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

.page-about .about-timeline__node:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

.page-about .about-timeline__year {
  display: block;
  margin-bottom: 7px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--pomegranate);
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-timeline__node > p {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--taupe);
}

.page-about .about-timeline__more {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--blue);
  transition: max-height 240ms var(--ease), opacity 240ms var(--ease), margin 240ms var(--ease);
}

.page-about .about-timeline__node:hover .about-timeline__more,
.page-about .about-timeline__node:focus-within .about-timeline__more {
  max-height: 120px;
  margin-top: 10px;
  opacity: 1;
}

.page-about .about-journey__figure {
  align-self: start;
}

.page-about .about-journey__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------------- 更新节奏 ---------------- */
.page-about .about-rhythm {
  background: var(--ink);
  color: var(--cream);
  padding: clamp(46px, 7vw, 86px) 0;
}

.page-about .about-rhythm .section-head__index {
  color: var(--gold);
}

.page-about .about-rhythm .section-head__title {
  color: var(--cream);
}

.page-about .about-rhythm .section-head__note {
  color: rgba(246, 240, 228, .66);
}

.page-about .about-rhythm__list {
  display: grid;
  gap: 12px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rhythm__item {
  padding: 18px 4px 18px 20px;
  border-left: 1px solid var(--about-rule);
  transition: background var(--dur) var(--ease);
}

.page-about .about-rhythm__item:hover {
  background: rgba(212, 160, 60, .07);
}

.page-about .about-rhythm__tick {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 10px;
  border: 1px solid var(--about-rule);
  border-radius: 999px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold-light);
}

.page-about .about-rhythm__item h3 {
  margin: 0 0 8px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: #fff;
}

.page-about .about-rhythm__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(246, 240, 228, .74);
}

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

.page-about .about-team__grid {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

.page-about .about-team__card {
  position: relative;
  padding: 26px 22px;
  background: var(--cream);
  border: 1px solid var(--about-hair);
  border-radius: var(--r);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-team__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 34px;
  height: 34px;
  background: var(--gold);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  opacity: .92;
}

.page-about .about-team__card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.page-about .about-team__card .tag {
  margin-bottom: 14px;
}

.page-about .about-team__card h3 {
  margin: 0 0 10px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.4;
  color: var(--deep-red);
}

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

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-team__rule {
  margin-top: 26px;
  padding: 20px 22px;
  border-left: 3px solid var(--jade);
  background: rgba(31, 122, 107, .07);
  border-radius: 0 var(--r) var(--r) 0;
}

.page-about .about-team__rule p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink);
}

/* ---------------- 服务地区 ---------------- */
.page-about .about-region__panel {
  display: grid;
  gap: 26px;
  padding: clamp(24px, 4vw, 40px);
  background: var(--paper);
  border: 1px solid var(--about-hair);
  border-radius: var(--r);
  box-shadow: 0 1px 0 rgba(78, 12, 20, .06);
}

.page-about .about-region__title {
  margin: 10px 0 14px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-region__text p {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--taupe);
}

.page-about .about-region__facts {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.page-about .about-region__fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--about-hair);
}

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

.page-about .about-region__fact dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--taupe);
}

.page-about .about-region__fact dd {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 15px;
  color: var(--ink);
}

.page-about .about-region__code {
  font-family: var(--f-mono);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--blue);
}

/* ---------------- 合作与荣誉 ---------------- */
.page-about .about-partners__grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-about .about-partners__lead,
.page-about .about-partners__award {
  position: relative;
  padding: 24px 22px;
  border-radius: var(--r);
  border: 1px solid var(--about-hair);
  background: var(--paper);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-partners__lead {
  background: linear-gradient(150deg, var(--deep-red) 0%, var(--edge) 100%);
  border-color: var(--edge);
  color: var(--cream);
}

.page-about .about-partners__lead:hover,
.page-about .about-partners__award:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.page-about .about-partners__num {
  display: block;
  font-family: var(--f-mono);
  font-size: clamp(38px, 5vw, 56px);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold-light);
}

.page-about .about-partners__lead h3 {
  margin: 14px 0 8px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
  color: #fff;
}

.page-about .about-partners__lead p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(246, 240, 228, .82);
}

.page-about .about-partners__award h3 {
  margin: 0 0 8px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--deep-red);
}

.page-about .about-partners__award p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--taupe);
}

.page-about .about-partners__flag {
  display: inline-block;
  margin-top: 14px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .06em;
  background: rgba(27, 58, 107, .1);
  color: var(--blue);
  opacity: .72;
  transition: opacity var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-partners__lead .about-partners__flag {
  background: rgba(242, 212, 138, .18);
  color: var(--gold-light);
}

.page-about .about-partners__lead:hover .about-partners__flag,
.page-about .about-partners__award:hover .about-partners__flag,
.page-about .about-partners__lead:focus-within .about-partners__flag,
.page-about .about-partners__award:focus-within .about-partners__flag {
  opacity: 1;
  background: var(--gold);
  color: var(--edge);
}

/* ---------------- 下一步 ---------------- */
.page-about .about-next {
  background: linear-gradient(160deg, var(--deep-red) 0%, var(--edge) 100%);
  color: var(--cream);
  padding: clamp(44px, 7vw, 80px) 0;
}

.page-about .about-next__inner {
  display: grid;
  gap: 26px;
}

.page-about .about-next__title {
  margin: 0 0 12px;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(21px, 2.6vw, 28px);
  line-height: 1.36;
  color: #fff;
}

.page-about .about-next__text p {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(246, 240, 228, .84);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
}

.page-about .about-next__link {
  font-size: 14px;
  color: var(--gold-light);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-next__link:hover {
  color: #fff;
}

/* ---------------- 响应式 ---------------- */
@media (min-width: 720px) {
  .page-about .about-position__grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-position__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 26px;
  }

  .page-about .about-position__list li:last-child {
    grid-column: 1 / -1;
  }

  .page-about .about-rhythm__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px 0;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    grid-template-areas:
      "w f"
      "r f";
    align-items: stretch;
  }

  .page-about .about-team__card:nth-of-type(1) { grid-area: w; }
  .page-about .about-team__card:nth-of-type(2) { grid-area: r; }
  .page-about .about-team__figure { grid-area: f; }

  .page-about .about-team__figure img {
    height: 100%;
    min-height: 220px;
    object-fit: cover;
  }

  .page-about .about-region__panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 40px;
    align-items: start;
  }

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

  .page-about .about-partners__lead {
    grid-row: span 2;
  }

  .page-about .about-partners__award--wide {
    grid-column: 1 / -1;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: center;
    gap: 40px;
  }

  .page-about .about-next__actions {
    justify-content: flex-start;
  }
}

@media (min-width: 960px) {
  .page-about .about-journey__layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    grid-template-areas: "list figure";
    gap: 64px;
    align-items: start;
  }

  .page-about .about-timeline { grid-area: list; }
  .page-about .about-journey__figure { grid-area: figure; }

  .page-about .about-rhythm__list {
    grid-template-columns: 1.3fr 1fr 1.15fr .95fr;
    gap: 0;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas:
      "lead a1 a2"
      "lead wide wide";
  }

  .page-about .about-partners__lead { grid-area: lead; grid-row: auto; }
  .page-about .about-partners__award:nth-of-type(2) { grid-area: a1; }
  .page-about .about-partners__award:nth-of-type(3) { grid-area: a2; }
  .page-about .about-partners__award--wide { grid-area: wide; grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__card,
  .page-about .about-partners__lead,
  .page-about .about-partners__award,
  .page-about .about-timeline__node,
  .page-about .about-partners__flag,
  .page-about .about-timeline__more {
    transition: none;
  }

  .page-about .about-team__card:hover,
  .page-about .about-partners__lead:hover,
  .page-about .about-partners__award:hover {
    transform: none;
  }
}