.page-about {
  --about-gap: clamp(1.5rem, 3.2vw, 2.75rem);
  --about-pad: clamp(2.5rem, 6vw, 4.5rem);
  padding-bottom: var(--about-pad);
}

.page-about a:not(.btn) {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 200, .35);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about a:not(.btn):hover {
  border-bottom-color: var(--cyan);
}

.page-about a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 2px;
}

.page-about .about-hero {
  display: grid;
  gap: var(--about-gap);
  padding: clamp(1.25rem, 3.5vw, 2.5rem) 0 var(--about-pad);
}

.page-about .about-hero h1 {
  margin: .55rem 0 0;
  font-size: var(--fs-display);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 15em;
}

.page-about .about-hero__lede {
  margin: 1.05rem 0 0;
  max-width: 34em;
  color: var(--white);
  font-size: var(--fs-body);
  line-height: 1.85;
}

.page-about .about-hero__more {
  margin: .85rem 0 0;
  max-width: 34em;
  color: var(--mist);
  font-size: var(--fs-sm);
  line-height: 1.8;
}

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

.page-about .about-fact {
  background: var(--ink-2);
  padding: .85rem .95rem 1rem;
}

.page-about .about-fact dt {
  font-size: var(--fs-note);
  color: var(--mist);
  letter-spacing: .06em;
}

.page-about .about-fact dd {
  margin: .3rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--gold);
  letter-spacing: .02em;
}

.page-about .about-band {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--card);
  box-shadow: var(--shadow-card);
}

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

.page-about .about-section {
  padding-top: var(--about-pad);
}

.page-about .about-section__head {
  max-width: 44rem;
}

.page-about .about-h2 {
  margin: .5rem 0 0;
  padding-left: .65rem;
  border-left: 4px solid var(--cyan);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-about .about-lede {
  margin: .95rem 0 0;
  max-width: 36em;
  color: var(--mist);
  font-size: var(--fs-body);
  line-height: 1.85;
}

.page-about .about-figure {
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-2);
}

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

.page-about .about-figure figcaption,
.page-about .workflow__figure figcaption {
  padding: .7rem .9rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  color: var(--mist-dim);
  letter-spacing: .02em;
}

/* 时间轴 */
.page-about .tl {
  list-style: none;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
  max-width: 50rem;
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 1.85rem 2.15rem;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .5rem;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(233, 196, 106, .1);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .tl__item::after {
  content: "";
  position: absolute;
  left: 4.5px;
  top: 1.65rem;
  bottom: .35rem;
  width: 1px;
  background: var(--line);
}

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

.page-about .tl__item:last-child::after {
  display: none;
}

.page-about .tl__item:hover::before,
.page-about .tl__item:focus-within::before {
  background: var(--cyan);
  transform: scale(1.2);
}

.page-about .tl__year {
  display: inline-block;
  margin-bottom: .3rem;
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  color: var(--gold);
  letter-spacing: .12em;
}

.page-about .tl__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  transition: color var(--dur) var(--ease);
}

.page-about .tl__item:hover .tl__title {
  color: var(--cyan);
}

.page-about .tl__text {
  margin: .4rem 0 0;
  max-width: 40em;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--mist);
}

/* 团队分工 */
.page-about .team {
  display: grid;
  gap: 1px;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .team__cell {
  position: relative;
  padding: 1.15rem 1.15rem 1.3rem;
  background-color: var(--ink-2);
  transition: background-color var(--dur) var(--ease);
}

.page-about .team__cell--edit {
  background-image: radial-gradient(rgba(34, 224, 200, .16) 1px, transparent 1px);
  background-size: 10px 10px;
}

.page-about .team__cell--review {
  background-image: repeating-linear-gradient(135deg, rgba(233, 196, 106, .13) 0 1px, transparent 1px 9px);
}

.page-about .team__cell:hover,
.page-about .team__cell:focus-within {
  background-color: var(--card);
}

.page-about .team__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: .08em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-about .team__num {
  margin: .4rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: .01em;
}

.page-about .team__text {
  margin: .5rem 0 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--mist);
}

/* 流程 */
.page-about .workflow {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
}

.page-about .flow {
  list-style: none;
  counter-reset: step;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: .8rem;
}

.page-about .flow li {
  counter-increment: step;
  position: relative;
  padding-left: 2.85rem;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--mist);
  min-height: 2rem;
}

.page-about .flow li::before {
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  color: var(--gold);
  background: var(--ink-2);
}

.page-about .flow li strong {
  color: var(--white);
  font-weight: 700;
}

.page-about .workflow__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--card);
  align-self: start;
}

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

/* 三种用法 */
.page-about .paths {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .path {
  padding: 1.3rem 1.2rem 1.45rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(170deg, var(--card), var(--ink-2));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .path:hover,
.page-about .path:focus-within {
  transform: translateY(-2px);
  border-color: rgba(34, 224, 200, .45);
}

.page-about .path--accent {
  border-color: rgba(34, 224, 200, .4);
}

.page-about .path__title {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 800;
  line-height: 1.45;
  color: var(--white);
}

.page-about .path__text {
  margin: .6rem 0 0;
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .path__list {
  margin: .9rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .45rem;
  border-top: 1px solid var(--line);
  padding-top: .85rem;
}

.page-about .path__list li {
  position: relative;
  padding-left: 1rem;
  font-size: var(--fs-note);
  line-height: 1.75;
  color: var(--mist);
}

.page-about .path__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--cyan);
}

/* 合作表格 */
.page-about .ptable-wrap {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-2);
}

.page-about .ptable {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.page-about .ptable th {
  padding: .75rem .9rem;
  text-align: left;
  font-size: var(--fs-note);
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--mist);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-about .ptable td {
  padding: .8rem .9rem;
  border-bottom: 1px solid var(--line);
  line-height: 1.7;
  color: var(--white);
  vertical-align: top;
}

.page-about .ptable tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .ptable td:first-child {
  color: var(--white);
  font-weight: 500;
}

.page-about .ptable td:last-child {
  font-family: var(--font-mono);
  color: var(--gold);
  white-space: nowrap;
}

.page-about .partners__note {
  margin: 1.1rem 0 0;
  max-width: 40em;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--mist);
}

/* 未来计划 */
.page-about .ahead {
  list-style: none;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .ahead__item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: .5rem;
  padding: 1.15rem .2rem 1.25rem;
  background: var(--ink);
  transition: background var(--dur) var(--ease);
}

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

.page-about .ahead__num {
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  color: var(--gold);
  letter-spacing: .08em;
  padding-top: .2rem;
}

.page-about .ahead__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-about .ahead__text {
  margin: .4rem 0 0;
  max-width: 42em;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--mist);
}

/* 结语 */
.page-about .coda {
  margin-top: var(--about-pad);
  padding: clamp(1.6rem, 4vw, 2.75rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, var(--card), var(--ink-2) 72%);
  box-shadow: var(--shadow-card);
}

.page-about .coda p {
  margin: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-weight: 800;
  line-height: 1.75;
  color: var(--white);
  letter-spacing: -.01em;
}

.page-about .coda p + p {
  margin-top: .3rem;
}

.page-about .coda__btn {
  margin-top: 1.4rem;
}

@media (min-width: 760px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .tl__item {
    display: grid;
    grid-template-columns: 4.75rem minmax(0, 1fr);
    column-gap: .6rem;
  }

  .page-about .tl__year {
    margin-bottom: 0;
    padding-top: .25rem;
  }

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

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

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 4rem);
  }

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

  .page-about .team {
    grid-template-columns: 1.25fr 1fr 1.45fr;
  }

  .page-about .workflow {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .paths {
    grid-template-columns: 1fr 1.1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__item::before,
  .page-about .tl__title,
  .page-about .path,
  .page-about .team__cell,
  .page-about .ahead__item,
  .page-about a:not(.btn) {
    transition: none;
  }

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