.page-about {
  --about-line: rgba(26, 21, 18, .14);
  --about-line-dark: rgba(244, 238, 223, .16);
  --about-max: var(--wrap);
  --about-pad: var(--gutter);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-about a {
  color: inherit;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3.2vw, 34px) 0 0;
  color: var(--cream);
  background:
    radial-gradient(90% 130% at 88% -12%, rgba(76, 195, 255, .2), transparent 62%),
    radial-gradient(70% 80% at -6% 104%, rgba(46, 125, 91, .3), transparent 62%),
    linear-gradient(180deg, var(--pitch) 0%, var(--pitch-2) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(244, 238, 223, .05) 1px, transparent 1px);
  background-size: 72px 100%;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__eyebrow {
  margin: clamp(14px, 2.4vw, 24px) 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orange);
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(31px, 5.2vw, 60px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--cream);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-hero__hl {
  color: var(--lemon);
  white-space: nowrap;
}

.page-about .about-hero__lede {
  max-width: 60ch;
  margin: clamp(14px, 2.2vw, 22px) 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: rgba(244, 238, 223, .84);
}

.page-about .about-hero__banner {
  position: relative;
  margin: clamp(22px, 3.6vw, 40px) 0 0;
}

.page-about .about-hero__banner img {
  display: block;
  width: 100%;
  height: clamp(150px, 28vw, 330px);
  object-fit: cover;
  object-position: center 42%;
}

.page-about .about-hero__banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 43, 34, .5) 0%, rgba(11, 43, 34, .08) 38%, rgba(11, 43, 34, .76) 100%);
  pointer-events: none;
}

.page-about .about-hero__caption {
  position: absolute;
  z-index: 1;
  left: var(--about-pad);
  right: var(--about-pad);
  bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: rgba(244, 238, 223, .8);
}

.page-about .about-hero__leagues {
  max-width: var(--about-max);
  margin: 0 auto;
  padding: clamp(16px, 2.6vw, 26px) var(--about-pad) clamp(22px, 3.6vw, 40px);
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .about-hero__leagues li {
  padding: 4px 11px;
  border: 1px solid var(--about-line-dark);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: rgba(244, 238, 223, .76);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  max-width: var(--about-max);
  margin: 0 auto;
  padding: clamp(26px, 4vw, 52px) var(--about-pad) clamp(40px, 6vw, 76px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
}

.page-about .about-toc {
  position: relative;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-toc__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--red);
}

.page-about .about-toc__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: 0 0 auto;
  padding: 6px 11px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  border-color: var(--moss);
  background: rgba(46, 125, 91, .1);
}

.page-about .about-toc__idx {
  font-size: 11px;
  color: var(--red);
}

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding-block: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--about-line);
  scroll-margin-top: 96px;
}

.page-about .about-content > .about-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-section__head {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 16px;
}

.page-about .about-section__num {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--red);
  min-height: 40px;
}

.page-about .about-section__kicker {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ink-soft);
}

.page-about .about-section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 33px);
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-about .about-section h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-section p {
  max-width: 66ch;
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-section__lede {
  font-size: 16.5px;
  color: var(--ink);
}

.page-about .about-section__note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--red);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .about-section a {
  color: var(--moss);
  text-underline-offset: 3px;
}

/* ---------- 日常工作 ---------- */
.page-about .about-work {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-work__item {
  background: var(--cream);
  padding: 14px 16px 12px;
}

.page-about .about-work__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-work__tag {
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 8px;
  border-radius: 2px;
  background: rgba(76, 195, 255, .18);
  color: #0d4d68;
  font-size: 11.5px;
  letter-spacing: .06em;
}

/* ---------- 深色面板 ---------- */
.page-about .about-panel {
  position: relative;
  overflow: hidden;
  margin-block: clamp(20px, 3.4vw, 34px);
  padding: clamp(20px, 3.4vw, 36px);
  border-top: 0;
  border-radius: 4px;
  color: var(--cream);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(76, 195, 255, .16), transparent 58%),
    linear-gradient(158deg, var(--pitch) 0%, var(--pitch-3) 100%);
}

.page-about .about-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--lemon) 0%, var(--blue) 46%, transparent 100%);
}

.page-about .about-panel .about-section__num {
  color: var(--orange);
}

.page-about .about-panel .about-section__kicker {
  color: rgba(244, 238, 223, .6);
}

.page-about .about-panel h2,
.page-about .about-panel h3 {
  color: var(--cream);
}

.page-about .about-panel p {
  color: rgba(244, 238, 223, .82);
}

.page-about .about-panel a {
  color: var(--lemon);
}

/* ---------- 团队 ---------- */
.page-about .about-crew {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 18px;
}

.page-about .about-crew__block {
  padding: 15px 16px 16px;
  border: 1px solid var(--about-line-dark);
  border-top-width: 3px;
  border-radius: 3px;
  background: rgba(244, 238, 223, .05);
}

.page-about .about-crew__block--edit { border-top-color: var(--lemon); }
.page-about .about-crew__block--data { border-top-color: var(--blue); }
.page-about .about-crew__block--dev  { border-top-color: var(--moss); }

.page-about .about-crew__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1;
  letter-spacing: -.02em;
}

.page-about .about-crew__block--edit .about-crew__num { color: var(--lemon); }
.page-about .about-crew__block--data .about-crew__num { color: var(--blue); }
.page-about .about-crew__block--dev  .about-crew__num { color: #7BE0B4; }

.page-about .about-crew__block h3 {
  margin: 8px 0 6px;
  font-size: 17px;
}

.page-about .about-crew__block p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .about-crew__figure {
  margin: 18px 0 0;
}

.page-about .about-crew__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
  object-fit: cover;
}

.page-about .about-crew__figure figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .03em;
  color: rgba(244, 238, 223, .6);
}

/* ---------- 时间轴 ---------- */
.page-about .about-section--grid {
  background-image:
    linear-gradient(to right, rgba(26, 21, 18, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(26, 21, 18, .05) 1px, transparent 1px);
  background-size: 34px 34px;
  background-position: -1px -1px;
}

.page-about .about-timeline {
  position: relative;
  margin: 20px 0 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--lemon) 0%, var(--blue) 52%, var(--moss) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 10px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 11px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--pitch);
  box-shadow: 0 0 0 3px var(--cream), 0 0 0 4px var(--about-line);
}

.page-about .about-timeline__item--now::before {
  background: var(--lemon);
  box-shadow: 0 0 0 3px var(--cream), 0 0 0 4px rgba(232, 255, 77, .55);
}

.page-about .about-timeline__panel {
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  background: rgba(244, 238, 223, .72);
}

.page-about .about-timeline__panel[open] {
  border-color: var(--moss);
  background: rgba(46, 125, 91, .07);
}

.page-about .about-timeline__panel summary {
  list-style: none;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 18px;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  cursor: pointer;
}

.page-about .about-timeline__panel summary::-webkit-details-marker {
  display: none;
}

.page-about .about-timeline__panel summary::after {
  content: "+";
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--moss);
}

.page-about .about-timeline__panel[open] summary::after {
  content: "–";
}

.page-about .about-timeline__year {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--red);
}

.page-about .about-timeline__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink);
}

.page-about .about-timeline__body {
  padding: 0 14px 14px;
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
}

.page-about .about-timeline__figure {
  margin: 20px 0 0;
}

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 3px;
  object-fit: cover;
}

/* ---------- 流程 ---------- */
.page-about .about-section--tint {
  padding-inline: clamp(16px, 3vw, 28px);
  border-radius: 3px;
  background: var(--cream-2);
  border-top-color: transparent;
}

.page-about .about-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: flow;
}

.page-about .about-flow__step {
  position: relative;
  padding: 14px 16px 14px 18px;
  border-left: 3px solid var(--blue);
  background: rgba(244, 238, 223, .9);
  border-radius: 0 3px 3px 0;
}

.page-about .about-flow__step:nth-child(2) { border-left-color: var(--orange); }
.page-about .about-flow__step:nth-child(3) { border-left-color: var(--red); }
.page-about .about-flow__step:nth-child(4) { border-left-color: var(--moss); }

.page-about .about-flow__time {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  letter-spacing: .05em;
  color: #0d4d68;
}

.page-about .about-flow__step h3 {
  margin: 0 0 5px;
  font-size: 16.5px;
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
}

/* ---------- 读者 ---------- */
.page-about .about-audience {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-audience__item {
  padding: 14px 16px;
  border-left: 2px solid var(--lemon);
  background: rgba(244, 238, 223, .06);
}

.page-about .about-audience__item h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
}

.page-about .about-audience__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding-block: clamp(24px, 4vw, 40px) 8px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-cta h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  letter-spacing: -.015em;
}

.page-about .about-cta p {
  max-width: 60ch;
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

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

.page-about .about-cta__back {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
}

.page-about .about-cta__back a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px dashed var(--about-line);
  padding-bottom: 2px;
}

.page-about .about-cta__back a:hover {
  color: var(--moss);
  border-bottom-color: var(--moss);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-work {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 960px) {
  .page-about .about-body {
    grid-template-columns: 196px minmax(0, 1fr);
    column-gap: clamp(32px, 4.2vw, 64px);
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: 104px;
    align-self: start;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-about .about-toc__list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
  }

  .page-about .about-toc__link {
    border: 0;
    border-left: 2px solid var(--about-line);
    border-radius: 0;
    padding: 8px 4px 8px 12px;
    white-space: normal;
  }

  .page-about .about-toc__link:hover,
  .page-about .about-toc__link:focus-visible {
    border-left-color: var(--red);
    background: rgba(200, 69, 43, .07);
  }

  .page-about .about-section__head {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 20px;
  }

  .page-about .about-section__num {
    font-size: 12.5px;
    min-height: 52px;
  }

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

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

  .page-about .about-flow__step {
    padding: 14px 14px 16px;
    border-left: 0;
    border-top: 3px solid var(--blue);
    border-radius: 0 0 3px 3px;
  }

  .page-about .about-flow__step:nth-child(2) { border-top-color: var(--orange); }
  .page-about .about-flow__step:nth-child(3) { border-top-color: var(--red); }
  .page-about .about-flow__step:nth-child(4) { border-top-color: var(--moss); }
}

@media (min-width: 1100px) {
  .page-about .about-panel {
    padding: clamp(26px, 3vw, 40px) clamp(26px, 3.4vw, 44px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero h1 {
    transform: none;
  }

  .page-about .about-toc__link {
    transition: none;
  }
}
<<<END>>>