.page-about {
  --about-col: 112px;
  --about-hair: rgba(20, 16, 14, .14);
  --about-hair-deep: rgba(201, 214, 226, .16);
  --about-brown-soft: #3B3530;
  background: var(--wl-ink);
  color: var(--wl-silver);
  font-family: var(--wl-font-body);
  overflow-x: clip;
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--wl-maxw);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .page-about .about-wrap {
    padding: 0 36px;
  }
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 0 0 96px;
  background:
    radial-gradient(120% 88% at 88% 0%, rgba(43, 227, 210, .16), transparent 58%),
    linear-gradient(158deg, var(--wl-ink-800) 0%, var(--wl-ink) 66%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  bottom: -52px;
  height: 104px;
  background: var(--wl-cream);
  transform: rotate(-1.6deg);
  transform-origin: center;
}

.page-about .about-crumbs {
  padding-top: 22px;
}

.page-about .about-crumbs .wl-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--wl-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--wl-graphite);
}

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

.page-about .about-crumbs .wl-crumbs__item a:hover {
  color: var(--wl-cyan);
}

.page-about .about-crumbs .wl-crumbs__sep {
  color: var(--wl-red);
}

.page-about .about-hero__grid {
  margin-top: 44px;
  display: grid;
  gap: 36px;
}

@media (min-width: 980px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    column-gap: 60px;
    align-items: end;
  }
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--wl-font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--wl-orange);
}

.page-about .about-kicker::before {
  content: "";
  width: 9px;
  height: 9px;
  background: var(--wl-orange);
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  font-family: var(--wl-font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: #FFFFFF;
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--wl-silver);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--about-hair-deep);
  border: 1px solid var(--about-hair-deep);
}

.page-about .about-stats__cell {
  background: var(--wl-ink-800);
  padding: 16px 14px 18px;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--wl-font-display);
  font-weight: 800;
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--wl-orange);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--wl-silver);
}

/* ---------- 长卷正文 ---------- */

.page-about .about-body {
  background: var(--wl-cream);
  color: var(--wl-brown);
  padding: 76px 0 8px;
}

.page-about .about-body__seam {
  height: 1px;
  margin: 52px 0 0;
  background: var(--wl-red);
  opacity: .55;
}

.page-about .about-chapter {
  display: grid;
  gap: 14px;
  padding: 42px 0;
  border-top: 1px solid var(--about-hair);
  scroll-margin-top: 24px;
}

.page-about .about-body > .about-wrap > .about-chapter:first-child {
  border-top: 0;
  padding-top: 4px;
}

@media (min-width: 920px) {
  .page-about .about-chapter {
    grid-template-columns: var(--about-col) minmax(0, 1fr);
    column-gap: 48px;
  }
}

.page-about .about-chapter__rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

@media (min-width: 920px) {
  .page-about .about-chapter__rail {
    display: block;
    position: sticky;
    top: 32px;
  }
}

.page-about .about-chapter__no {
  display: block;
  font-family: var(--wl-font-display);
  font-weight: 900;
  font-size: 38px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--wl-red);
  transition: color var(--wl-t) var(--wl-ease);
}

.page-about .about-chapter:target .about-chapter__no {
  color: var(--wl-orange);
}

.page-about .about-chapter__slug {
  display: block;
  margin-top: 10px;
  font-family: var(--wl-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--wl-graphite);
}

.page-about .about-chapter__h {
  margin: 0 0 18px;
  font-family: var(--wl-font-editorial);
  font-weight: 600;
  font-size: clamp(22px, 2.5vw, 31px);
  line-height: 1.34;
  color: var(--wl-brown);
}

.page-about .about-chapter__p {
  margin: 0 0 14px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-brown-soft);
}

.page-about .about-chapter__p--tight {
  margin-top: 22px;
}

/* ---------- 要点列表 ---------- */

.page-about .about-points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-points li {
  position: relative;
  padding: 13px 0 13px 22px;
  border-top: 1px solid var(--about-hair);
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-brown-soft);
}

.page-about .about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 21px;
  width: 7px;
  height: 7px;
  background: var(--wl-orange);
}

/* ---------- 标签区 ---------- */

.page-about .about-tagline {
  margin-top: 26px;
}

.page-about .about-tagline__label {
  display: block;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--wl-graphite);
}

.page-about .about-tagwall {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.page-about .about-tagwall--sub {
  margin-top: 8px;
}

.page-about .about-tag {
  display: inline-block;
  padding: 8px 12px;
  border: 1px solid rgba(20, 16, 14, .24);
  background: transparent;
  color: var(--wl-brown);
  font-family: var(--wl-font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--wl-t) var(--wl-ease), border-color var(--wl-t) var(--wl-ease), color var(--wl-t) var(--wl-ease);
}

.page-about .about-tag--sub {
  padding: 5px 9px;
  font-size: 11px;
  color: var(--about-brown-soft);
  border-color: rgba(20, 16, 14, .18);
}

.page-about .about-tag:hover,
.page-about .about-tag:focus-visible {
  border-color: var(--wl-cyan);
  color: var(--wl-teal);
}

.page-about .about-tag.is-active,
.page-about .about-tag[aria-pressed="true"] {
  background: var(--wl-orange);
  border-color: var(--wl-orange);
  color: #FFFFFF;
}

/* ---------- 路径标签 ---------- */

.page-about .about-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 24px 0 0;
  padding: 15px 16px;
  background: var(--wl-ink-800);
  border-left: 3px solid var(--wl-orange);
}

.page-about .about-path__label {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--wl-graphite);
}

.page-about .about-path .wl-chip--copy {
  appearance: none;
  padding: 7px 11px;
  border: 1px solid rgba(201, 214, 226, .3);
  background: transparent;
  color: var(--wl-cyan);
  font-size: 13px;
  cursor: pointer;
  transition: background var(--wl-t) var(--wl-ease), border-color var(--wl-t) var(--wl-ease), color var(--wl-t) var(--wl-ease);
}

.page-about .about-path .wl-chip--copy:hover,
.page-about .about-path .wl-chip--copy:focus-visible {
  border-color: var(--wl-cyan);
  background: rgba(43, 227, 210, .12);
}

.page-about .about-path .wl-chip--copy[data-copied] {
  background: var(--wl-cyan);
  border-color: var(--wl-cyan);
  color: var(--wl-ink);
}

.page-about .about-path__hint {
  font-size: 12px;
  color: var(--wl-graphite);
}

/* ---------- 抽屉示意 ---------- */

.page-about .about-drawerbox {
  margin-top: 26px;
  padding: 20px;
  background: var(--wl-ink-800);
  border: 1px solid var(--about-hair-deep);
}

.page-about .about-drawer {
  display: block;
  width: 100%;
  max-width: 380px;
  height: auto;
  margin: 0 auto;
}

.page-about .about-drawerbox__cap {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--wl-silver);
}

/* ---------- 深色画布 ---------- */

.page-about .about-deep {
  background: linear-gradient(180deg, var(--wl-ink) 0%, var(--wl-ink-800) 100%);
  color: var(--wl-silver);
  padding: 0 20px;
  margin: 0 -20px;
}

@media (min-width: 768px) {
  .page-about .about-deep {
    padding: 0 36px;
    margin: 0 -36px;
  }
}

.page-about .about-chapter--deep {
  border-top-color: var(--about-hair-deep);
}

.page-about .about-chapter--deep .about-chapter__no {
  color: var(--wl-orange);
}

.page-about .about-chapter--deep .about-chapter__slug {
  color: var(--wl-graphite);
}

.page-about .about-chapter--deep .about-chapter__h {
  color: #FFFFFF;
}

.page-about .about-chapter--deep .about-chapter__p {
  color: var(--wl-silver);
}

.page-about .about-points--deep li {
  border-top-color: var(--about-hair-deep);
  color: var(--wl-silver);
}

/* ---------- 时间轴 ---------- */

.page-about .about-timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 22px 0 18px;
  border-top: 1px solid var(--about-hair-deep);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 1px;
  background: var(--wl-red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--wl-t) var(--wl-ease);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  transform: scaleX(1);
}

.page-about .about-timeline__dot {
  display: block;
  width: 11px;
  height: 11px;
  margin-bottom: 14px;
  background: var(--wl-ink);
  border: 1px solid var(--wl-graphite);
  transition: border-color var(--wl-t) var(--wl-ease), background var(--wl-t) var(--wl-ease);
}

.page-about .about-timeline__item:hover .about-timeline__dot,
.page-about .about-timeline__item:focus-within .about-timeline__dot {
  border-color: var(--wl-red);
  background: var(--wl-orange);
}

.page-about .about-timeline__ver {
  display: block;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--wl-orange);
}

.page-about .about-timeline__name {
  display: block;
  margin-top: 6px;
  font-family: var(--wl-font-editorial);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.4;
  color: #FFFFFF;
}

.page-about .about-timeline__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--wl-silver);
}

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

  .page-about .about-timeline__item {
    padding: 26px 20px 6px;
    border-top: 0;
    border-left: 1px solid var(--about-hair-deep);
  }

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

  .page-about .about-timeline__item::before {
    top: 0;
  }

  .page-about .about-timeline__item:first-child::before {
    left: 0;
  }

  .page-about .about-timeline__item:last-child::before {
    left: 0;
    right: 0;
  }
}

/* ---------- 图片 ---------- */

.page-about .about-figure {
  margin: 28px 0 0;
  border: 1px solid var(--about-hair);
  background: #FFFFFF;
}

.page-about .about-chapter--deep .about-figure {
  border-color: var(--about-hair-deep);
  background: var(--wl-ink);
}

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

.page-about .about-figure__cap {
  display: block;
  padding: 10px 13px;
  border-top: 1px solid var(--about-hair);
  font-size: 12px;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--wl-graphite);
}

.page-about .about-chapter--deep .about-figure__cap {
  border-top-color: var(--about-hair-deep);
}

/* ---------- 底部横幅 ---------- */

.page-about .about-banner {
  background: var(--wl-ink-800);
  border-top: 1px solid var(--about-hair-deep);
  padding: 46px 0 54px;
}

.page-about .about-banner__inner {
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-about .about-banner__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 48px;
  }
}

.page-about .about-banner__h {
  margin: 0;
  font-family: var(--wl-font-editorial);
  font-weight: 600;
  font-size: clamp(20px, 2.3vw, 26px);
  line-height: 1.4;
  color: #FFFFFF;
}

.page-about .about-banner__p {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--wl-silver);
}

.page-about .about-banner__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-banner .wl-btn {
  display: inline-block;
  padding: 11px 18px;
  font-family: var(--wl-font-body);
  font-size: 14px;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--wl-t) var(--wl-ease), border-color var(--wl-t) var(--wl-ease), color var(--wl-t) var(--wl-ease);
}

.page-about .about-banner .wl-btn--primary {
  background: var(--wl-orange);
  border-color: var(--wl-orange);
  color: #FFFFFF;
}

.page-about .about-banner .wl-btn--primary:hover {
  background: #E85A1D;
  border-color: #E85A1D;
}

.page-about .about-banner .wl-btn--ghost {
  background: transparent;
  border-color: rgba(201, 214, 226, .38);
  color: var(--wl-silver);
}

.page-about .about-banner .wl-btn--ghost:hover {
  border-color: var(--wl-cyan);
  color: var(--wl-cyan);
}

.page-about .about-banner .wl-btn--quiet {
  background: transparent;
  border-color: transparent;
  color: var(--wl-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-banner .wl-btn--quiet:hover {
  color: #FFFFFF;
}

/* ---------- 窄屏收口 ---------- */

@media (max-width: 520px) {
  .page-about .about-hero {
    padding-bottom: 80px;
  }

  .page-about .about-stats {
    grid-template-columns: 1fr;
  }

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

  .page-about .about-banner__links {
    flex-direction: column;
    align-items: stretch;
  }

  .page-about .about-banner .wl-btn {
    text-align: center;
  }
}
<<<END>>>