.page-about {
  --about-grid-line: rgba(199, 205, 212, 0.06);
  --about-hair: rgba(199, 205, 212, 0.14);
  --about-gold-line: rgba(184, 137, 59, 0.32);
  --about-panel: #14181D;
  display: block;
  background: var(--ink);
  color: var(--silver);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-block: 1.25rem 0.5rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  border-bottom: 1px solid var(--about-hair);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto auto;
  width: min(780px, 70vw);
  height: min(780px, 70vw);
  background: radial-gradient(circle at 60% 40%, rgba(184, 137, 59, 0.16), transparent 62%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 38%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), transparent);
  opacity: 0.7;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  padding-block: clamp(1.5rem, 4vw, 2.5rem) clamp(2.5rem, 6vw, 4.5rem);
}

.page-about .about-hero__lead {
  display: grid;
  gap: 1.25rem;
  align-content: end;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.15rem, 6vw, 4.6rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--ivory);
  text-wrap: balance;
}

.page-about .about-hero__year {
  color: var(--copper);
  font-size: 0.92em;
  letter-spacing: -0.01em;
}

.page-about .about-hero .lede {
  max-width: 60ch;
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem 1.25rem;
  margin: 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--about-gold-line);
}

.page-about .about-fact dt {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--mist);
  margin-bottom: 0.35rem;
}

.page-about .about-fact__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 600;
  color: var(--gold);
  line-height: 1.1;
}

.page-about .about-fact__num span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--graphite);
}

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

.page-about .about-hero__figure {
  margin: 0;
  border: 1px solid var(--about-hair);
  background: var(--carbon);
  align-self: end;
}

.page-about .about-hero__figure img,
.page-about .about-timeline__figure img,
.page-about .about-team__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.82) brightness(0.92) contrast(1.05);
}

.page-about .media__caption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  color: var(--mist);
  padding: 0.7rem 0.9rem;
  border-top: 1px solid var(--about-hair);
}

/* ---------- 页内目录 ---------- */
.page-about .about-jump {
  border-bottom: 1px solid var(--about-hair);
  background: var(--carbon);
}

.page-about .about-jump__inner {
  display: grid;
  gap: 0.65rem;
  padding-block: 0.9rem;
}

.page-about .about-jump__label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .about-jump__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-jump__list a {
  display: inline-block;
  padding-block: 0.25rem;
  font-size: 0.88rem;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  padding-block: clamp(2.75rem, 6vw, 5.5rem);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-head {
  display: grid;
  gap: 0.7rem;
  margin-bottom: clamp(1.6rem, 4vw, 2.75rem);
  max-width: 74ch;
}

.page-about .about-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.6rem, 3.6vw, 2.7rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-about .about-head__note {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-sub {
  margin: 0 0 1rem;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ivory);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__list {
  margin: 0 0 clamp(2rem, 4vw, 3rem);
  padding: 0;
  list-style: none;
}

.page-about .about-node {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.45rem;
  padding: 1.4rem 0 1.4rem 1.6rem;
  border-left: 1px solid var(--about-gold-line);
  transition: background 0.35s var(--ease);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 1.95rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(184, 137, 59, 0.14);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .about-node:hover {
  background: linear-gradient(90deg, rgba(184, 137, 59, 0.08), transparent 68%);
}

.page-about .about-node:hover::before {
  background: var(--copper);
  box-shadow: 0 0 0 6px rgba(217, 168, 92, 0.18);
}

.page-about .about-node__mark {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .about-node__body h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-head);
  font-size: clamp(1.08rem, 1.9vw, 1.35rem);
  font-weight: 700;
  color: var(--ivory);
}

.page-about .about-node__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-timeline__figure {
  margin: 0;
  border: 1px solid var(--about-hair);
  background: var(--carbon);
}

/* ---------- 服务覆盖 ---------- */
.page-about .about-coverage__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .about-coverage__panel {
  padding: clamp(1.4rem, 3vw, 2.1rem);
  border: 1px solid var(--about-hair);
  border-left: 3px solid var(--gold);
  background: linear-gradient(160deg, rgba(20, 24, 29, 0.9), rgba(11, 13, 16, 0.7));
}

.page-about .about-coverage__panel--dark {
  border-left-color: var(--jade);
}

.page-about .about-regions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
}

.page-about .about-regions li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.9rem;
  color: var(--ivory);
  border: 1px solid var(--about-gold-line);
  background: rgba(184, 137, 59, 0.07);
}

.page-about .about-regions__rest {
  color: var(--mist) !important;
  border-style: dashed !important;
  border-color: var(--about-hair) !important;
  background: transparent !important;
}

.page-about .about-coverage__foot {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--silver);
}

.page-about .about-ratio {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.page-about .about-ratio__row {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr) 3rem;
  align-items: center;
  gap: 0.85rem;
}

.page-about .about-ratio__name {
  font-size: 0.8rem;
  color: var(--mist);
}

.page-about .about-ratio__bar {
  position: relative;
  display: block;
  height: 8px;
  background: rgba(199, 205, 212, 0.1);
  overflow: hidden;
}

.page-about .about-ratio__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dark), var(--copper));
}

.page-about .about-ratio__fill.is-64 {
  width: 64%;
}

.page-about .about-ratio__fill.is-36 {
  width: 36%;
  background: linear-gradient(90deg, rgba(63, 167, 154, 0.5), var(--jade));
}

.page-about .about-ratio__val {
  font-size: 0.85rem;
  color: var(--copper);
  text-align: right;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-about .about-team__text p {
  margin: 0 0 1.1rem;
  max-width: 66ch;
  font-size: 0.99rem;
  line-height: 1.82;
  color: var(--silver);
}

.page-about .about-crew {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-gold-line);
}

.page-about .about-crew li {
  display: grid;
  grid-template-columns: 3.2rem 6.5rem minmax(0, 1fr);
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-crew__num {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--copper);
}

.page-about .about-crew__name {
  font-size: 0.95rem;
  color: var(--ivory);
}

.page-about .about-crew__desc {
  font-size: 0.86rem;
  color: var(--graphite);
}

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid var(--about-hair);
  background: var(--carbon);
}

/* ---------- 荣誉 ---------- */
.page-about .about-honors__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-honor-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-about .about-honor {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  align-items: center;
  gap: 0.9rem;
  padding: 0.95rem 0.9rem;
  border-bottom: 1px solid var(--about-hair);
  transition: background 0.3s var(--ease), padding-left 0.3s var(--ease);
}

.page-about .about-honor:first-child {
  border-top: 1px solid var(--about-hair);
}

.page-about .about-honor:hover {
  background: rgba(184, 137, 59, 0.07);
  padding-left: 1.3rem;
}

.page-about .about-honor__idx {
  font-size: 0.76rem;
  color: var(--gold);
}

.page-about .about-honor__name {
  font-size: 0.98rem;
  color: var(--ivory);
}

.page-about .about-honors__note {
  padding: clamp(1.4rem, 3vw, 2rem);
  background: var(--ivory);
  color: #14181D;
  border-top: 3px solid var(--gold-dark);
}

.page-about .about-honors__note .plate {
  margin: 0 0 0.9rem;
}

.page-about .about-honors__note .plate__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--gold-dark);
}

.page-about .about-honors__note p {
  margin: 0 0 0.9rem;
  font-size: 0.96rem;
  line-height: 1.78;
  color: #2b3039;
}

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

/* ---------- 维护节奏 ---------- */
.page-about .about-promise__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .about-plate {
  position: relative;
  padding: clamp(1.3rem, 3vw, 1.9rem) clamp(1.3rem, 3vw, 1.9rem) clamp(1.5rem, 3vw, 2rem);
  background: linear-gradient(180deg, rgba(20, 24, 29, 0.95), rgba(11, 13, 16, 0.85));
  border: 1px solid var(--about-hair);
  border-top: 1px solid var(--about-gold-line);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .about-plate:hover {
  transform: translateY(-3px);
  border-color: rgba(184, 137, 59, 0.5);
}

.page-about .about-plate__tag {
  margin: 0 0 0.75rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-plate h3 {
  margin: 0 0 0.7rem;
  font-family: var(--font-head);
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ivory);
}

.page-about .about-plate p {
  margin: 0 0 1.1rem;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--silver);
}

.page-about .about-plate__link {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 168, 92, 0.45);
  padding-bottom: 0.15rem;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

.page-about .about-promise__contact {
  display: grid;
  gap: 1.2rem;
  padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--about-gold-line);
  border-left: 3px solid var(--gold);
  background: rgba(111, 78, 42, 0.09);
}

.page-about .about-promise__contact p {
  margin: 0;
  max-width: 72ch;
  font-size: 0.98rem;
  line-height: 1.82;
  color: var(--silver);
}

.page-about .about-promise__contact .btn {
  justify-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-jump__inner {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 1.5rem;
  }

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

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

@media (min-width: 760px) {
  .page-about .about-node {
    grid-template-columns: 9rem minmax(0, 1fr);
    align-items: start;
    gap: 0.5rem 1.75rem;
    padding-block: 1.6rem;
  }

  .page-about .about-node__mark {
    padding-top: 0.15rem;
  }

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

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

  .page-about .about-promise__contact {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-jump {
    position: sticky;
    top: 0;
    z-index: 5;
    backdrop-filter: blur(6px);
  }
}

@media (max-width: 420px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-crew li {
    grid-template-columns: 2.8rem minmax(0, 1fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node,
  .page-about .about-node::before,
  .page-about .about-honor,
  .page-about .about-plate,
  .page-about .about-jump__list a {
    transition: none;
  }

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