.page-about {
  --about-line: rgba(127, 179, 174, .26);
  --about-line-strong: rgba(127, 179, 174, .52);
  --about-paper-line: rgba(7, 19, 28, .18);
  --about-gap: clamp(1.25rem, 3vw, 2rem);
  padding-bottom: clamp(2.5rem, 8vw, 5rem);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .about-crumb {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

/* ---------- 首屏拼贴 ---------- */
.page-about .about-hero {
  padding-top: clamp(1.25rem, 3.5vw, 2.5rem);
  padding-bottom: clamp(2rem, 6vw, 3.5rem);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-lg);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.6rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  margin: .75rem 0 1rem;
  color: var(--chalk);
  max-width: 15em;
}

.page-about .about-hero__lede {
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 34em;
  margin: 0 0 1.5rem;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}

.page-about .about-hero__tiles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  align-self: start;
}

.page-about .about-tile {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .4rem .6rem;
  padding: 1rem 1.1rem;
  background: var(--harbor-blue);
  transition: background-color .2s ease;
}

.page-about .about-tile:hover {
  background: #12293a;
}

.page-about .about-tile--teal {
  box-shadow: inset 3px 0 0 var(--mist-teal);
}

.page-about .about-tile--orange {
  box-shadow: inset 3px 0 0 var(--ember-orange);
}

.page-about .about-tile__num {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: clamp(1.6rem, 4vw, 2.15rem);
  line-height: 1;
  color: var(--chalk);
}

.page-about .about-tile--orange .about-tile__num {
  color: var(--ember-orange);
}

.page-about .about-tile__unit {
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--mist-teal);
}

.page-about .about-tile__text {
  flex: 1 0 100%;
  margin: 0;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--slate-mute);
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 5vw, 3.5rem);
    align-items: end;
  }
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  padding-block: clamp(2.25rem, 6.5vw, 4.5rem);
  border-top: 1px solid var(--about-line);
}

.page-about .about-chapter__head {
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
}

.page-about .about-chapter__meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .9rem;
}

.page-about .about-chapter__meta::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--about-line);
}

.page-about .about-chapter__no {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--sand-green);
}

.page-about .about-chapter__label {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: .8125rem;
  letter-spacing: .22em;
  color: var(--mist-teal);
  white-space: nowrap;
}

.page-about .about-chapter__lede {
  font-size: clamp(.9375rem, 2vw, 1.0625rem);
  line-height: 1.8;
  color: var(--text-soft);
  max-width: 46em;
  margin: .75rem 0 0;
}

.page-about .about-chapter__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-lg);
}

.page-about .about-chapter__body.prose {
  max-width: 40em;
}

.page-about .about-chapter__body.prose p {
  margin: 0 0 1.1rem;
  line-height: 1.75;
}

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

@media (min-width: 960px) {
  .page-about .about-chapter__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 5vw, 3.5rem);
    align-items: start;
  }

  .page-about .about-chapter--flip .about-chapter__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  }

  .page-about .about-chapter--flip .about-chapter__body {
    order: 2;
  }

  .page-about .about-chapter--flip .about-chapter__aside {
    order: 1;
  }
}

/* ---------- 图片与旁注 ---------- */
.page-about .about-figure {
  margin: 0 0 1.25rem;
  display: block;
}

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

.page-about .about-facts {
  margin: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-facts__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: .65rem 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-facts dt {
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--slate-mute);
  margin: 0;
}

.page-about .about-facts dd {
  font-family: var(--font-data);
  font-size: .875rem;
  color: var(--chalk);
  margin: 0;
  text-align: right;
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-band {
  height: 4px;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
  background: linear-gradient(90deg, var(--mist-teal), var(--sand-green) 45%, var(--ember-orange) 88%);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 1.1rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: .5rem;
  bottom: .5rem;
  left: 7px;
  width: 1px;
  background: var(--about-line);
}

.page-about .about-node {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  grid-template-areas: "marker card";
  gap: 0 1rem;
  position: relative;
}

.page-about .about-node__marker {
  grid-area: marker;
  width: 13px;
  height: 13px;
  margin-top: .7rem;
  border: 1px solid var(--sand-green);
  background: var(--ink-abyss);
  position: relative;
  z-index: 1;
}

.page-about .about-node__card {
  grid-area: card;
  border: 1px solid var(--about-line);
  background: var(--harbor-blue);
  padding: 1rem 1.15rem 1.1rem;
  transition: border-color .2s ease, background-color .2s ease;
}

.page-about .about-node__card:hover {
  border-color: var(--about-line-strong);
  background: #12293a;
}

.page-about .about-node__tag {
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--sand-green);
}

.page-about .about-node__title {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: .02em;
  margin: .35rem 0 .5rem;
  color: var(--chalk);
}

.page-about .about-node__card p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-node__data {
  margin-top: .75rem !important;
  padding-top: .6rem;
  border-top: 1px solid var(--about-line);
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--mist-teal) !important;
}

@media (min-width: 860px) {
  .page-about .about-timeline::before {
    left: 50%;
  }

  .page-about .about-node {
    grid-template-columns: minmax(0, 1fr) 88px minmax(0, 1fr);
    grid-template-areas: "card marker gap";
    align-items: center;
    gap: 0;
  }

  .page-about .about-node--right {
    grid-template-areas: "gap marker card";
  }

  .page-about .about-node__marker {
    justify-self: center;
    align-self: center;
    margin-top: 0;
  }
}

/* ---------- 纸页章节 ---------- */
.page-about .about-chapter--paper {
  background: var(--paper-warm);
  color: var(--ink-abyss);
  border-top-color: transparent;
}

.page-about .about-chapter--paper .about-chapter__meta::after {
  background: var(--about-paper-line);
}

.page-about .about-chapter--paper .about-chapter__no {
  color: var(--ink-abyss);
}

.page-about .about-chapter--paper .about-chapter__label {
  color: #3d5c5e;
}

.page-about .about-chapter--paper .section-title,
.page-about .about-chapter--paper .about-chapter__lede {
  color: var(--ink-abyss);
}

.page-about .about-chapter--paper .about-chapter__lede {
  color: rgba(7, 19, 28, .78);
}

.page-about .about-chapter--paper .prose,
.page-about .about-chapter--paper .prose p {
  color: var(--ink-abyss);
}

.page-about .about-chapter--paper .image-frame {
  border-color: var(--about-paper-line);
}

.page-about .about-chapter--paper .image-frame__caption {
  color: rgba(7, 19, 28, .66);
}

.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  padding-top: clamp(1.25rem, 3vw, 2rem);
  border-top: 1px solid var(--about-paper-line);
}

.page-about .about-team__num {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: clamp(2.25rem, 5.5vw, 3.25rem);
  line-height: 1;
  color: var(--ink-abyss);
  display: block;
}

.page-about .about-team__role {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .14em;
  margin: .5rem 0 .6rem;
  color: #3d5c5e;
}

.page-about .about-team__item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: rgba(7, 19, 28, .82);
}

.page-about .about-team__note {
  margin-top: .7rem !important;
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .06em;
  color: #4a6b6d !important;
}

@media (min-width: 820px) {
  .page-about .about-team {
    grid-template-columns: 1.15fr 1fr 1.35fr;
    gap: 0;
  }

  .page-about .about-team__item {
    padding: 0 1.5rem;
    border-left: 1px solid var(--about-paper-line);
  }

  .page-about .about-team__item:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-about .about-team__item:last-child {
    padding-right: 0;
  }
}

/* ---------- 四步流程 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

.page-about .about-flow__step {
  position: relative;
  padding-top: 1.5rem;
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--about-line-strong);
}

.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--sand-green);
}

.page-about .about-flow__idx {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: .08em;
  color: var(--mist-teal);
}

.page-about .about-flow__title {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: 1.3125rem;
  letter-spacing: .06em;
  margin: .4rem 0 .55rem;
  color: var(--chalk);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

@media (min-width: 780px) {
  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .about-flow__step {
    padding: 1.75rem 1.25rem 0 0;
  }

  .page-about .about-flow__step + .about-flow__step {
    padding-left: 1.25rem;
  }

  .page-about .about-flow__step + .about-flow__step::before {
    left: 1.25rem;
  }

  .page-about .about-flow__step + .about-flow__step::after {
    left: 1.25rem;
  }
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-scope__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  margin-bottom: clamp(1.5rem, 4vw, 2.25rem);
}

.page-about .about-scope__stat {
  background: var(--ink-abyss);
  padding: 1rem 1.1rem;
}

.page-about .about-scope__num {
  display: block;
  font-family: var(--font-data);
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.1;
  color: var(--chalk);
}

.page-about .about-scope__label {
  display: block;
  margin-top: .35rem;
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--slate-mute);
}

.page-about .about-scope__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-lg);
}

.page-about .about-scope__title {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .18em;
  color: var(--mist-teal);
  margin: 0 0 .9rem;
}

.page-about .about-scope__list {
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
}

.page-about .about-scope__list li {
  padding: .6rem 0;
  border-bottom: 1px solid var(--about-line);
  font-size: .9375rem;
  color: var(--chalk);
}

.page-about .about-scope__list li::before {
  content: "／";
  color: var(--sand-green);
  margin-right: .4rem;
  font-size: .8125rem;
}

.page-about .about-scope__text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 38em;
}

.page-about .about-scope__note {
  margin: 0;
  padding-top: .8rem;
  border-top: 1px solid var(--about-line);
  font-size: .875rem;
  line-height: 1.7;
  color: var(--slate-mute);
}

@media (min-width: 700px) {
  .page-about .about-scope__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-scope__split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 5vw, 3.5rem);
    align-items: start;
  }
}

/* ---------- 服务对象 ---------- */
.page-about .about-audience {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-audience__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .5rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--about-line);
  transition: background-color .2s ease;
}

.page-about .about-audience__row:hover {
  background: rgba(127, 179, 174, .05);
}

.page-about .about-audience__idx {
  font-family: var(--font-data);
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--sand-green);
}

.page-about .about-audience__body h3 {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: .04em;
  margin: 0 0 .35rem;
  color: var(--chalk);
}

.page-about .about-audience__body p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--text-soft);
  max-width: 44em;
}

.page-about .about-audience__link {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: .875rem;
  letter-spacing: .08em;
  color: var(--sand-green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  justify-self: start;
  transition: border-color .2s ease;
}

.page-about .about-audience__link:hover,
.page-about .about-audience__link:focus-visible {
  border-bottom-color: var(--sand-green);
}

@media (min-width: 760px) {
  .page-about .about-audience__row {
    grid-template-columns: 3.5rem minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 1.25rem;
    padding: 1.25rem 0;
  }

  .page-about .about-audience__link {
    justify-self: end;
  }
}

/* ---------- 荣誉与收束 ---------- */
.page-about .about-honor {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  margin-bottom: clamp(1.75rem, 4vw, 2.5rem);
}

.page-about .about-honor__card {
  background: var(--harbor-blue);
  padding: 1.25rem 1.3rem 1.35rem;
}

.page-about .about-honor__year {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--ember-orange);
}

.page-about .about-honor__name {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: 1.1875rem;
  letter-spacing: .04em;
  margin: .55rem 0 .5rem;
  color: var(--chalk);
}

.page-about .about-honor__card p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-close {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  padding-top: clamp(1.25rem, 3vw, 2rem);
  border-top: 1px solid var(--about-line-strong);
}

.page-about .about-close__text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-soft);
  max-width: 46em;
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}

@media (min-width: 760px) {
  .page-about .about-honor {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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