.page-about {
  display: block;
  padding-bottom: var(--sp-7);
  color: var(--paper);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 96px 0 var(--sp-5);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}

.page-about .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0 0 var(--sp-3);
  padding: 0;
  list-style: none;
  font: 400 var(--fs-xs) / 1.4 var(--font-mono);
  letter-spacing: .04em;
  color: var(--muted);
}

.page-about .crumbs li + li::before {
  content: "/";
  margin: 0 6px 0 2px;
  color: var(--line);
}

.page-about .crumbs a {
  color: var(--muted);
  text-decoration: none;
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--lime);
}

.page-about .about-hero h1 {
  margin: 0 0 var(--sp-3);
  font-family: var(--font-cond);
  font-size: 32px;
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  max-width: 60ch;
  margin: 0 0 var(--sp-4);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-3);
  background: var(--panel);
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-fact--accent .about-fact__num {
  color: var(--lime);
}

.page-about .about-fact__unit {
  font-size: var(--fs-xs);
  line-height: 1.4;
  color: var(--muted);
}

/* ---------- 首屏横幅 ---------- */
.page-about .about-banner {
  margin: 0 0 var(--sp-6);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--char);
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
  filter: saturate(.86) contrast(1.06);
}

.page-about .about-banner figcaption {
  padding: 10px 18px;
  font-size: var(--fs-xs);
  line-height: 1.6;
  color: var(--muted);
  background: var(--panel-2);
}

/* ---------- 目录条 ---------- */
.page-about .about-index {
  border-bottom: 1px solid var(--line);
  background: var(--char);
}

.page-about .about-index__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding-top: 10px;
  padding-bottom: 10px;
}

.page-about .about-index__label {
  flex: 0 0 auto;
  font: 400 var(--fs-xs) / 1 var(--font-mono);
  letter-spacing: .16em;
  color: var(--lime);
}

.page-about .about-index ul {
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
  gap: 8px;
  margin: 0;
  padding: 2px 2px 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-index ul::-webkit-scrollbar {
  display: none;
}

.page-about .about-index a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: var(--fs-sm);
  color: var(--paper);
  white-space: nowrap;
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, background-color .18s ease;
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(200, 247, 81, .07);
}

/* ---------- 通用章节标题 ---------- */
.page-about .about-head {
  max-width: 66ch;
  margin-bottom: var(--sp-5);
}

.page-about .about-head h2 {
  margin: 6px 0 var(--sp-2);
  font-family: var(--font-cond);
  font-size: 25px;
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.02em;
  color: var(--paper);
}

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

/* ---------- 年份条带 ---------- */
.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl__item {
  position: relative;
  padding: 0 0 var(--sp-5) 30px;
  border-left: 1px solid var(--line);
}

.page-about .about-tl__item:last-child {
  padding-bottom: 4px;
  border-left-color: transparent;
}

.page-about .about-tl__dot {
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(200, 247, 81, .12);
}

.page-about .about-tl__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--lime);
}

.page-about .about-tl__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-cond);
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-tl__body p {
  margin: 0 0 10px;
  max-width: 58ch;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-tl__add {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .02em;
  color: var(--lime-dim);
}

/* ---------- 四类读者 ---------- */
.page-about .about-audience__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}

.page-about .about-reader {
  position: relative;
  padding: var(--sp-3) var(--sp-3) var(--sp-4);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color .18s ease, transform .18s ease;
}

.page-about .about-reader::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -1px;
  width: 2px;
  background: var(--lime);
  opacity: 0;
  transition: opacity .18s ease;
}

.page-about .about-reader:hover,
.page-about .about-reader:focus-within {
  border-color: var(--lime-dim);
  transform: translateY(-2px);
}

.page-about .about-reader:hover::before,
.page-about .about-reader:focus-within::before {
  opacity: 1;
}

.page-about .about-reader__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .14em;
  color: var(--lime-dim);
}

.page-about .about-reader h3 {
  margin: 0 0 8px;
  font-family: var(--font-cond);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-reader p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 团队与三地小组 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}

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

.page-about .about-team__row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: var(--sp-3);
  padding: var(--sp-3) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-team__row:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__row dt {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: .04em;
  color: var(--lime);
}

.page-about .about-team__row dd {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team__figure {
  margin: 0 0 var(--sp-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--char);
  overflow: hidden;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team__figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-tri {
  display: block;
  width: 100%;
  height: auto;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
}

/* ---------- 成稿流程 ---------- */
.page-about .about-flow {
  padding: 74px 0 86px;
  background: var(--panel);
  clip-path: polygon(0 20px, 100% 0, 100% calc(100% - 20px), 0 100%);
}

.page-about .about-flow__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-about .about-flow__step {
  padding: var(--sp-4) var(--sp-3);
  background: var(--ink);
  transition: background-color .18s ease;
}

.page-about .about-flow__step:hover,
.page-about .about-flow__step:focus-within {
  background: var(--panel-2);
}

.page-about .about-flow__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .18em;
  color: var(--lime-dim);
}

.page-about .about-flow__step h3 {
  margin: 0 0 8px;
  font-family: var(--font-cond);
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-flow__step p {
  margin: 0 0 12px;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-flow__step .about-flow__out {
  display: inline-block;
  margin: 0;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  line-height: 1.5;
  letter-spacing: .02em;
  color: var(--lime);
}

/* ---------- 合作网络 ---------- */
.page-about .about-network__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}

.page-about .about-network__main > .about-head__lede {
  max-width: 56ch;
  margin-bottom: var(--sp-4);
}

.page-about .about-network__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}

.page-about .about-net {
  flex: 1 1 170px;
  min-width: 160px;
  padding: var(--sp-3) var(--sp-4) calc(var(--sp-3) + 10px);
  border: 1px solid var(--line);
  background: var(--panel-2);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 88% 100%, 0 100%);
}

.page-about .about-net__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.page-about .about-net__num--paper {
  color: var(--paper);
}

.page-about .about-net__label {
  font-size: var(--fs-xs);
  letter-spacing: .02em;
  color: var(--muted);
}

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

.page-about .about-network__terms li {
  position: relative;
  padding: var(--sp-2) 0 var(--sp-2) 24px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-network__terms li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--lime-dim);
}

.page-about .about-network__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--char);
  overflow: hidden;
}

.page-about .about-network__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 9;
  object-fit: cover;
  filter: saturate(.86) contrast(1.05);
}

.page-about .about-network__figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 纠错与响应 ---------- */
.page-about .about-support__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}

.page-about .about-support__text .about-head__lede {
  margin-bottom: var(--sp-4);
}

.page-about .about-support__steps {
  margin: 0 0 var(--sp-4);
  padding: 0 0 0 30px;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-support__steps li {
  margin-bottom: 8px;
  padding-left: 4px;
}

.page-about .about-support__steps li::marker {
  font-family: var(--font-mono);
  color: var(--lime-dim);
}

.page-about .about-support__more {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-support__more a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-dim);
}

.page-about .about-support__more a:hover,
.page-about .about-support__more a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .about-support__card {
  padding: var(--sp-4);
  border: 1px solid var(--line);
  border-left: 2px solid var(--lime);
  border-radius: var(--radius);
  background: var(--panel-2);
}

.page-about .about-support__row {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--line);
}

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

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

.page-about .about-support__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .12em;
  color: var(--muted);
}

.page-about .about-support__value {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-about .about-support__value--addr {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 后续入口 ---------- */
.page-about .about-next {
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line);
}

.page-about .about-next__title {
  margin: 0 0 var(--sp-4);
  font-family: var(--font-cond);
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-about .about-next__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--sp-3);
  background: var(--panel);
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-cond);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  transition: background-color .18s ease, color .18s ease;
}

.page-about .about-next__link span {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0;
  color: var(--muted);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: var(--panel-2);
  color: var(--lime);
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-about .about-hero {
    padding-top: 112px;
  }

  .page-about .about-hero h1 {
    font-size: 40px;
  }

  .page-about .about-hero__lede {
    font-size: var(--fs-body);
  }

  .page-about .about-head h2 {
    font-size: 30px;
  }

  .page-about .about-fact__num {
    font-size: 32px;
  }
}

@media (min-width: 760px) {
  .page-about .about-audience__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-about .about-audience__grid > .about-reader:nth-child(1) {
    grid-column: span 7;
  }

  .page-about .about-audience__grid > .about-reader:nth-child(2) {
    grid-column: span 5;
  }

  .page-about .about-audience__grid > .about-reader:nth-child(3) {
    grid-column: span 5;
  }

  .page-about .about-audience__grid > .about-reader:nth-child(4) {
    grid-column: span 7;
  }

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

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

  .page-about .about-tl__item {
    display: grid;
    grid-template-columns: 118px minmax(0, 1fr);
    gap: var(--sp-4);
    padding-left: 34px;
  }

  .page-about .about-tl__year {
    margin-bottom: 0;
    padding-top: 4px;
  }

  .page-about .about-tl__body h3 {
    margin-top: -4px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4.6fr);
    align-items: end;
    gap: var(--sp-6);
  }

  .page-about .about-hero h1 {
    font-size: 50px;
  }

  .page-about .about-head h2 {
    font-size: 36px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 6.4fr) minmax(0, 5.6fr);
    align-items: start;
    gap: var(--sp-6);
  }

  .page-about .about-network__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: var(--sp-6);
  }

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

@media (min-width: 1080px) {
  .page-about .about-flow__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 560px) {
  .page-about .about-index__label {
    display: none;
  }

  .page-about .about-team__row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-about .about-banner img {
    aspect-ratio: 3 / 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-reader,
  .page-about .about-flow__step,
  .page-about .about-next__link,
  .page-about .about-index a {
    transition: none;
  }

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