.page-about {
  --about-rule: 1px solid rgba(127, 191, 166, 0.18);
  --about-rule-soft: 1px solid rgba(127, 191, 166, 0.10);
  --about-amber-rule: 1px solid rgba(242, 169, 59, 0.34);
  --about-pad-block: clamp(2.6rem, 6vw, 5rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
  color: var(--mist);
}

.page-about .about-head {
  padding-top: clamp(1.2rem, 3vw, 2.2rem);
}

/* ---------- 居中刊头 ---------- */

.page-about .about-masthead {
  position: relative;
  margin-top: clamp(1.4rem, 4vw, 2.6rem);
  padding: clamp(2.2rem, 6vw, 4.6rem) clamp(0.6rem, 4vw, 2.4rem);
  text-align: center;
  border-top: var(--about-rule-soft);
  border-bottom: var(--about-rule);
  background:
    radial-gradient(72% 130% at 50% 0%, rgba(127, 191, 166, 0.11), transparent 68%),
    radial-gradient(48% 96% at 84% 108%, rgba(242, 169, 59, 0.09), transparent 70%);
}

.page-about .about-masthead::before,
.page-about .about-masthead::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(64px, 22vw, 190px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--celadon), transparent);
  opacity: 0.55;
}

.page-about .about-masthead::before { top: 0; }
.page-about .about-masthead::after { bottom: 0; }

.page-about .about-masthead h1 {
  margin: clamp(0.9rem, 2.5vw, 1.5rem) auto 0;
  max-width: 17ch;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2rem, 6.4vw, 4.3rem);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-about .about-masthead__lede {
  margin: clamp(1.1rem, 2.6vw, 1.7rem) auto 0;
  max-width: 44ch;
  font-size: clamp(0.98rem, 2.4vw, 1.12rem);
  line-height: 1.85;
  color: #a9bccd;
}

.page-about .about-masthead__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.9rem, 2.4vw, 1.4rem);
  max-width: 780px;
  margin: clamp(1.9rem, 4.5vw, 2.8rem) auto 0;
  padding: 0;
  list-style: none;
  text-align: left;
}

.page-about .about-masthead__facts li {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(127, 191, 166, 0.24);
  min-width: 0;
}

.page-about .about-masthead__facts .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.35rem, 4vw, 1.95rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--celadon);
}

.page-about .about-masthead__fact-label {
  font-size: 0.83rem;
  line-height: 1.5;
  color: var(--index-gray);
}

/* ---------- 首图 ---------- */

.page-about .about-hero-media {
  margin: clamp(2rem, 5vw, 3.4rem) auto 0;
  padding: 0 var(--gutter);
}

.page-about .about-hero-media .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.page-about .about-hero-media figcaption {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--index-gray);
  text-align: center;
}

/* ---------- 通用区块 ---------- */

.page-about .about-block--deep {
  background:
    radial-gradient(65% 110% at 10% 0%, rgba(127, 191, 166, 0.08), transparent 62%),
    radial-gradient(40% 80% at 96% 100%, rgba(242, 169, 59, 0.06), transparent 70%),
    var(--ink-800);
  border-top: var(--about-rule-soft);
  border-bottom: var(--about-rule-soft);
}

.page-about .about-prose p {
  margin: 0 0 1.1rem;
  font-size: clamp(1rem, 2.3vw, 1.07rem);
  line-height: 1.85;
  color: #c6d5e3;
}

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

.page-about .about-inline-link {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 169, 59, 0.45);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

/* ---------- 时间线 ---------- */

.page-about .about-timeline-media {
  margin: 0 0 clamp(1.8rem, 4vw, 2.6rem);
  padding: 0;
}

.page-about .about-timeline-media .media-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: var(--about-rule-soft);
}

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

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 0.7rem;
  bottom: 0.7rem;
  width: 1px;
  background: linear-gradient(
    180deg,
    var(--celadon) 0%,
    rgba(127, 191, 166, 0.32) 62%,
    rgba(127, 191, 166, 0.04) 100%
  );
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(1.9rem, 4.5vw, 3rem) 2.2rem;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 0.6rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--celadon);
  box-shadow: 0 0 0 5px rgba(127, 191, 166, 0.10);
}

.page-about .timeline__item--amber::before {
  border-color: var(--amber);
  box-shadow: 0 0 0 5px rgba(242, 169, 59, 0.14);
}

.page-about .timeline__year {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.15rem, 3.4vw, 1.6rem);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--celadon);
}

.page-about .timeline__item--amber .timeline__year {
  color: var(--amber);
}

.page-about .timeline__title {
  margin: 0.45rem 0 0.5rem;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(1.05rem, 3vw, 1.28rem);
  line-height: 1.5;
  color: var(--mist);
}

.page-about .timeline__text {
  margin: 0 0 0.85rem;
  font-size: 0.97rem;
  line-height: 1.8;
  color: #b3c4d4;
}

.page-about .about-timeline-tail {
  margin: clamp(1.8rem, 4vw, 2.6rem) 0 0;
  padding-top: 1.2rem;
  border-top: var(--about-rule-soft);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--index-gray);
}

/* ---------- 团队 ---------- */

.page-about .about-crew-media {
  margin: 0 0 clamp(1.6rem, 4vw, 2.4rem);
  padding: 0;
}

.page-about .about-crew-media .media-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: var(--about-rule-soft);
}

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

.page-about .crew-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.9rem, 2.4vw, 1.3rem);
}

.page-about .crew-card {
  position: relative;
  padding: clamp(1.15rem, 3vw, 1.6rem);
  border: var(--about-rule);
  border-radius: var(--radius-md);
  background:
    linear-gradient(160deg, rgba(20, 38, 61, 0.86) 0%, rgba(14, 26, 43, 0.86) 100%);
  overflow: hidden;
}

.page-about .crew-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--celadon), rgba(127, 191, 166, 0.05));
}

.page-about .crew-card__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--celadon-deep);
  color: #79b39c;
}

.page-about .crew-card__title {
  margin: 0.55rem 0 0.55rem;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(1.05rem, 2.9vw, 1.22rem);
  line-height: 1.45;
  color: var(--mist);
}

.page-about .crew-card__body {
  margin: 0 0 0.9rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: #b3c4d4;
}

.page-about .crew-card__roles {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.4rem;
}

.page-about .crew-card__roles li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.87rem;
  line-height: 1.7;
  color: var(--index-gray);
}

.page-about .crew-card__roles li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--celadon);
  opacity: 0.75;
}

.page-about .about-collab {
  margin-top: clamp(2rem, 5vw, 3.2rem);
  padding: clamp(1.3rem, 3.5vw, 2rem);
  border: var(--about-amber-rule);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(60% 130% at 100% 0%, rgba(242, 169, 59, 0.10), transparent 66%),
    rgba(14, 26, 43, 0.7);
}

.page-about .about-collab__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(1.15rem, 3.2vw, 1.5rem);
  line-height: 1.4;
  color: var(--amber-soft);
}

.page-about .about-collab__flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
  counter-reset: about-flow;
}

.page-about .about-collab__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  padding-bottom: 0.85rem;
  border-bottom: 1px dashed rgba(127, 191, 166, 0.18);
}

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

.page-about .about-collab__step-no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--amber);
  padding-top: 0.15rem;
}

.page-about .about-collab__step-text {
  font-size: 0.93rem;
  line-height: 1.75;
  color: #c6d5e3;
}

/* ---------- 服务准则 ---------- */

.page-about .rules {
  display: grid;
  gap: 0.7rem;
}

.page-about .rules__fold {
  border: var(--about-rule-soft);
  border-radius: var(--radius-md);
  background: rgba(20, 38, 61, 0.5);
  overflow: hidden;
}

/* ---------- 备案与联系 ---------- */

.page-about .about-contact {
  margin: 0 0 clamp(1.4rem, 3.5vw, 2rem);
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.page-about .about-contact .contact-list__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem 0.85rem;
  padding: 0.9rem 1.05rem;
  border: var(--about-rule-soft);
  border-radius: var(--radius-md);
  background: rgba(20, 38, 61, 0.45);
}

.page-about .about-contact .contact-list__label {
  flex: 0 0 auto;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--index-gray);
}

.page-about .about-contact .contact-list__value {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-about .about-contact .contact-list__value.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

.page-about .about-legal-note {
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border-left: 3px solid var(--celadon);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(14, 26, 43, 0.7);
}

.page-about .about-legal-note p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: #b3c4d4;
}

.page-about .about-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
}

.page-about .about-next__link {
  display: grid;
  gap: 0.28rem;
  padding: 1rem 1.15rem;
  border: var(--about-rule);
  border-radius: var(--radius-md);
  background: rgba(20, 38, 61, 0.35);
  text-decoration: none;
  transition: border-color 200ms var(--ease), background 200ms var(--ease), transform 200ms var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-color: rgba(242, 169, 59, 0.5);
  background: rgba(20, 38, 61, 0.62);
  transform: translateY(-2px);
}

.page-about .about-next__kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--celadon);
}

.page-about .about-next__label {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--mist);
}

.page-about .about-next__desc {
  font-size: 0.87rem;
  line-height: 1.7;
  color: var(--index-gray);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-about .about-masthead__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-contact .contact-list__item {
    flex-wrap: nowrap;
    align-items: center;
  }

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

@media (min-width: 1024px) {
  .page-about .about-hero-media {
    padding-left: 0;
    padding-right: 0;
  }

  .page-about .timeline {
    padding-left: 0.5rem;
  }

  .page-about .timeline__item {
    padding-left: 2.8rem;
  }

  .page-about .timeline__item::before {
    left: 8px;
  }

  .page-about .timeline::before {
    left: 14px;
  }

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

  .page-about .about-collab__flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem 1.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-next__link {
    transition: border-color 200ms var(--ease), background 200ms var(--ease);
  }

  .page-about .about-next__link:hover,
  .page-about .about-next__link:focus-visible {
    transform: none;
  }
}
<<<END>>>