.page-about {
  background: var(--night);
  color: var(--light);
}

.page-about .about-crumb {
  padding-block-start: 36px;
}

.page-about .about-crumb .breadcrumb {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gray);
}

.page-about .about-crumb .breadcrumb a {
  color: var(--light);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-about .about-crumb .breadcrumb a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-block: 28px 8px;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: end;
}

.page-about h1 {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(38px, 10vw, 84px);
  line-height: 1.02;
  letter-spacing: .01em;
  color: var(--warm);
  margin: 14px 0 22px;
}

.page-about .about-hero__lead {
  font-size: 16.5px;
  line-height: 1.9;
  max-width: 34em;
  color: var(--light);
  margin: 0 0 16px;
}

.page-about .about-hero__lead:last-of-type {
  color: var(--gray);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-block-start: 26px;
}

.page-about .about-hero__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-facts {
  list-style: none;
  margin: 0;
  padding-block: 26px;
  margin-block-start: 46px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 20px;
  border-block-start: 1px solid var(--line);
  border-block-end: 1px solid var(--line);
}

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

.page-about .about-facts .num {
  font-size: clamp(26px, 6vw, 34px);
  line-height: 1;
}

.page-about .about-facts li > span:last-child {
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--gray);
}

/* ---------- 索引条 ---------- */

.page-about .about-index {
  margin-block-start: 34px;
}

/* ---------- 通用章节 ---------- */

.page-about .about-section {
  padding-block: clamp(56px, 9vw, 108px);
}

.page-about .about-narrow {
  max-width: 760px;
}

.page-about .about-h2 {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(27px, 5.4vw, 46px);
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--warm);
  margin: 12px 0 18px;
}

.page-about .about-lede {
  font-size: 16.5px;
  line-height: 1.9;
  max-width: 34em;
  color: var(--light);
  margin: 0 0 34px;
}

.page-about .about-note {
  margin: 30px 0 0;
  font-size: 15px;
  line-height: 1.9;
  max-width: 46em;
  color: var(--gray);
  padding-inline-start: 16px;
  border-inline-start: 2px solid var(--orange);
}

/* ---------- 时间轴 ---------- */

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  inset-inline-start: 20px;
  inset-block: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--orange) 0%, rgba(255, 106, 26, .45) 45%, rgba(201, 207, 203, 0) 100%);
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 34px 60px;
}

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

.page-about .timeline__marker {
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: 0;
  width: 41px;
  height: 41px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--ink);
  color: var(--gray);
  font-size: 12px;
  letter-spacing: .06em;
  transition: border-color .18s var(--ease), color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-about .timeline__item:hover .timeline__marker {
  border-color: var(--orange);
  color: var(--warm);
  box-shadow: 0 0 0 4px rgba(255, 106, 26, .12);
}

.page-about .timeline__title {
  font-size: 19px;
  font-weight: 600;
  color: var(--warm);
  margin: 6px 0 8px;
}

.page-about .timeline__content p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--light);
  max-width: 34em;
}

/* ---------- 流程档案卡 ---------- */

.page-about .flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .flow-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px 20px;
}

.page-about .flow-card .tag {
  align-self: flex-start;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-about .flow-card:hover .tag {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

.page-about .flow-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--warm);
  margin: 0;
}

.page-about .flow-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--light);
}

.page-about .flow-card__note {
  margin-block-start: auto;
  padding-block-start: 12px;
  border-block-start: 1px solid var(--line);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-about .about-flow__media {
  margin-block-start: 34px;
}

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

/* ---------- 编辑的一天（暖白分区） ---------- */

.page-about .about-day {
  background: var(--warm);
  color: var(--ink);
}

.page-about .about-day .kicker {
  color: var(--orange);
}

.page-about .about-day .about-h2 {
  color: var(--ink);
}

.page-about .about-day .prose {
  color: var(--night);
}

.page-about .about-day .prose p {
  color: var(--night);
  margin: 0 0 20px;
}

.page-about .about-day .prose p:last-child {
  margin-block-end: 0;
}

.page-about .about-day__media {
  margin-block-start: 40px;
}

.page-about .about-day__media .media-frame {
  border: 1px solid rgba(11, 43, 36, .14);
}

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

/* ---------- 团队条形图 ---------- */

.page-about .team-chart {
  border-block-start: 1px solid var(--line);
}

.page-about .team-row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr) 40px;
  align-items: center;
  gap: 14px;
  padding-block: 16px;
  border-block-end: 1px solid var(--line);
}

.page-about .team-row__label {
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--light);
}

.page-about .team-row__track {
  height: 10px;
  border-radius: 999px;
  background: rgba(201, 207, 203, .12);
  overflow: hidden;
}

.page-about .team-row__fill {
  height: 100%;
  border-radius: 999px;
  transition: width .4s var(--ease);
}

.page-about .team-row--editors .team-row__fill {
  width: 37.5%;
  background: linear-gradient(90deg, var(--orange), var(--orange-2));
}

.page-about .team-row--tech .team-row__fill {
  width: 40.6%;
  background: linear-gradient(90deg, var(--blue), rgba(34, 211, 238, .55));
}

.page-about .team-row--support .team-row__fill {
  width: 21.9%;
  background: linear-gradient(90deg, var(--amber), rgba(245, 197, 66, .5));
}

.page-about .team-row__val {
  text-align: right;
  font-size: 20px;
}

/* ---------- 服务谁 ---------- */

.page-about .who-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .who-card {
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .who-card .kicker {
  color: var(--blue);
}

.page-about .who-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--warm);
  margin: 0;
}

.page-about .who-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--light);
}

/* ---------- 看台不散场 ---------- */

.page-about .about-slogan__inner {
  position: relative;
  padding-block: clamp(34px, 6vw, 56px);
  padding-inline: clamp(20px, 4vw, 48px);
  border: 1px solid var(--glass-line);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(255, 106, 26, .16) 0%, rgba(255, 106, 26, 0) 58%),
    rgba(255, 255, 255, .03);
}

.page-about .series-list {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-block-start: 1px solid var(--line);
}

.page-about .series-list__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 6px 16px;
  padding-block: 16px;
  border-block-end: 1px solid var(--line);
}

.page-about .series-list__name {
  font-size: 17px;
  color: var(--warm);
  letter-spacing: .02em;
}

.page-about .series-list__cycle {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
  white-space: nowrap;
}

.page-about .series-list__desc {
  grid-column: 1 / -1;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .about-slogan__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .flow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .series-list__item {
    grid-template-columns: 200px auto minmax(0, 1fr);
    align-items: center;
  }

  .page-about .series-list__desc {
    grid-column: auto;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-block: 36px 8px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 56px;
  }

  .page-about .about-hero__media {
    aspect-ratio: auto;
    height: min(58vh, 540px);
  }

  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-crumb {
    padding-block-start: 44px;
  }
}

@media (min-width: 1080px) {
  .page-about .flow-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .page-about .team-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "label val"
      "track track";
    row-gap: 9px;
  }

  .page-about .team-row__label { grid-area: label; }
  .page-about .team-row__val { grid-area: val; }
  .page-about .team-row__track { grid-area: track; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__marker,
  .page-about .flow-card .tag,
  .page-about .team-row__fill {
    transition: none;
  }
}
<<<END>>>