.page-about {
  --about-radius: 18px;
  --about-grid-line: rgba(189, 245, 217, .07);
  color: var(--text);
  background: var(--ink-950);
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 3vw, 22px);
}

/* 首屏刊头 */
.page-about .about-masthead {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(28px, 5vw, 56px);
  overflow: hidden;
}

.page-about .about-masthead::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: min(620px, 90%);
  height: min(620px, 90%);
  background: radial-gradient(circle at 60% 40%, rgba(59, 199, 243, .16), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-masthead__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-masthead__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 5.2rem);
  font-weight: 900;
  line-height: .96;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-masthead__title span {
  color: var(--lime);
}

.page-about .about-masthead__intro {
  max-width: 56ch;
  margin: 18px 0 0;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.75;
  color: var(--mint);
}

.page-about .about-masthead__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-masthead__figure {
  margin: 0;
  clip-path: polygon(0 0, 100% 0, 100% 88%, 88% 100%, 0 100%);
}

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

/* 目录 */
.page-about .about-toc {
  margin-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-toc__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 4px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: color .2s ease, border-color .2s ease, padding-left .2s ease;
}

.page-about .about-toc__link .mono {
  font-size: .8rem;
  color: var(--blue);
  letter-spacing: .08em;
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--lime);
  border-color: var(--line-strong);
  padding-left: 10px;
}

/* 数字带 */
.page-about .about-figures {
  background: var(--ink-900);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(22px, 4vw, 36px) 0;
}

.page-about .about-figures__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 3vw, 26px);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .about-fig {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid rgba(216, 255, 62, .28);
  transition: border-color .2s ease;
}

.page-about .about-fig:hover,
.page-about .about-fig:focus-visible,
.page-about .about-fig:focus-within {
  border-left-color: var(--lime);
  outline: none;
}

.page-about .about-fig__num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4.4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  letter-spacing: -.02em;
}

.page-about .about-fig__unit {
  font-size: .5em;
  margin-left: 2px;
  color: var(--mint);
}

.page-about .about-fig__label {
  font-size: .86rem;
  color: var(--text);
}

.page-about .about-fig__note {
  font-size: .78rem;
  line-height: 1.6;
  color: var(--slate);
}

/* 通用章节 */
.page-about .section {
  padding: clamp(40px, 6vw, 84px) 0;
}

.page-about .section--band {
  background: var(--ink-900);
}

.page-about .kicker {
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin: 0;
}

/* 起点 */
.page-about .about-origin__inner {
  display: grid;
  gap: clamp(20px, 4vw, 48px);
}

.page-about .about-origin__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4.4vw, 2.9rem);
  line-height: 1.12;
  color: var(--paper);
  font-weight: 800;
}

.page-about .about-origin__body p {
  margin: 0 0 16px;
  line-height: 1.85;
  color: var(--mint);
}

.page-about .about-origin__points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-origin__points li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 14px;
  background: var(--ink-800);
  border-radius: 4px 14px 14px 14px;
  font-size: .94rem;
  line-height: 1.65;
}

.page-about .about-origin__points .mono {
  color: var(--lime);
  font-weight: 700;
  flex: 0 0 auto;
}

/* 路径理念 */
.page-about .about-paths {
  background:
    repeating-linear-gradient(90deg, var(--about-grid-line) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, var(--about-grid-line) 0 1px, transparent 1px 64px),
    var(--ink-950);
}

.page-about .about-paths__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4.6vw, 3rem);
  line-height: 1.1;
  color: var(--paper);
  font-weight: 800;
}

.page-about .about-paths__lead {
  max-width: 60ch;
  margin: 14px 0 0;
  color: var(--mint);
  line-height: 1.8;
}

.page-about .about-paths__grid {
  margin-top: clamp(24px, 4vw, 40px);
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .about-paths__map {
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  padding: 12px;
  clip-path: polygon(0 0, 100% 0, 100% 82%, 88% 100%, 0 100%);
}

.page-about .about-paths__map svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .about-paths__rules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-path {
  padding: 18px 18px 20px;
  background: var(--ink-800);
  border-left: 3px solid var(--blue);
  border-radius: 0 14px 14px 0;
  transition: border-color .2s ease, transform .2s ease;
}

.page-about .about-path:hover {
  border-left-color: var(--lime);
  transform: translateX(3px);
}

.page-about .about-path__idx {
  font-size: .74rem;
  color: var(--blue);
  letter-spacing: .12em;
}

.page-about .about-path__name {
  margin: 6px 0 8px;
  font-size: 1.06rem;
  color: var(--paper);
  font-weight: 700;
}

.page-about .about-path p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--mint);
}

/* 战报运营 */
.page-about .about-reports__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4.6vw, 3rem);
  line-height: 1.1;
  color: var(--paper);
  font-weight: 800;
}

.page-about .about-reports__lead {
  max-width: 60ch;
  margin: 14px 0 0;
  color: var(--mint);
  line-height: 1.8;
}

.page-about .about-cycle {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: cycle;
}

.page-about .about-cycle__step {
  position: relative;
  padding: 18px 18px 20px 60px;
  background: var(--ink-800);
  border-radius: 4px 16px 16px 16px;
  border-bottom: 1px solid rgba(59, 199, 243, .18);
}

.page-about .about-cycle__no {
  position: absolute;
  left: 16px;
  top: 18px;
  font-size: .82rem;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: .02em;
}

.page-about .about-cycle__name {
  margin: 0 0 6px;
  font-size: 1.02rem;
  color: var(--paper);
  font-weight: 700;
}

.page-about .about-cycle__step p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: var(--mint);
}

.page-about .about-card-anatomy {
  margin-top: clamp(24px, 4vw, 38px);
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line-strong);
  border-radius: var(--about-radius);
  background: linear-gradient(135deg, rgba(216, 255, 62, .07), transparent 60%);
  display: grid;
  gap: 16px;
}

.page-about .about-card-anatomy__name {
  margin: 0 0 8px;
  font-size: 1.06rem;
  color: var(--paper);
  font-weight: 700;
}

.page-about .about-card-anatomy__text p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--mint);
}

.page-about .about-card-anatomy__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--text);
}

.page-about .about-card-anatomy__list .tag {
  margin-right: 8px;
}

/* 版本演进 */
.page-about .about-versions__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4.6vw, 3rem);
  line-height: 1.1;
  color: var(--paper);
  font-weight: 800;
}

.page-about .about-versions__lead {
  max-width: 62ch;
  margin: 14px 0 0;
  color: var(--mint);
  line-height: 1.8;
}

.page-about .about-versions__body {
  margin-top: clamp(24px, 4vw, 40px);
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  position: relative;
  display: grid;
  gap: 10px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime), rgba(59, 199, 243, .45), transparent);
}

.page-about .about-timeline__item {
  position: relative;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 18px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-950);
  border: 2px solid var(--lime);
}

.page-about .about-timeline__node {
  background: var(--ink-800);
  border-radius: 0 14px 14px 0;
  border-left: 1px solid var(--line);
}

.page-about .about-timeline__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-timeline__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--blue);
  font-size: 1rem;
}

.page-about .about-timeline__node[open] .about-timeline__summary::after {
  content: "−";
  color: var(--lime);
}

.page-about .about-timeline__node[open] .about-timeline__summary {
  border-bottom: 1px solid var(--line);
}

.page-about .about-timeline__idx {
  font-size: .78rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: .06em;
}

.page-about .about-timeline__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-timeline__flag {
  font-family: var(--font-mono);
  font-size: .7rem;
  padding: 2px 8px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--lime);
}

.page-about .about-timeline__node p {
  margin: 0;
  padding: 14px 16px 16px;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--mint);
}

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

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

/* 团队 */
.page-about .about-team {
  background: var(--ink-950);
}

.page-about .about-team__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4.6vw, 3rem);
  line-height: 1.1;
  color: var(--paper);
  font-weight: 800;
}

.page-about .about-team__lead {
  max-width: 60ch;
  margin: 14px 0 0;
  color: var(--mint);
  line-height: 1.8;
}

.page-about .about-team__grid {
  margin-top: clamp(24px, 4vw, 40px);
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .about-team__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-role {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px;
  background: var(--ink-900);
  border-top: 1px solid var(--line-strong);
  border-radius: 0 0 14px 14px;
}

.page-about .about-role__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  flex: 0 0 auto;
  min-width: 2.2ch;
}

.page-about .about-role__name {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-role p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--mint);
}

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

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

/* 服务支持 */
.page-about .about-support {
  background: var(--ink-900);
  border-top: 1px solid var(--line);
}

.page-about .about-support__inner {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-about .about-support__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.2vw, 2.7rem);
  line-height: 1.15;
  color: var(--paper);
  font-weight: 800;
}

.page-about .about-support__main p {
  margin: 0;
  line-height: 1.85;
  color: var(--mint);
}

.page-about .about-support__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-support__meta {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-support__row {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--ink-800);
}

.page-about .about-support__row dt {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-about .about-support__row dd {
  margin: 0;
  font-size: .94rem;
  line-height: 1.65;
  color: var(--text);
  word-break: break-word;
}

.page-about .about-support__row dd a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 255, 62, .35);
}

.page-about .about-support__row dd a:hover,
.page-about .about-support__row dd a:focus-visible {
  color: var(--paper);
  border-color: var(--paper);
}

/* 收尾 */
.page-about .about-next {
  background:
    radial-gradient(circle at 15% 20%, rgba(216, 255, 62, .13), transparent 55%),
    var(--ink-950);
  border-top: 1px solid var(--line);
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.15;
  color: var(--paper);
  font-weight: 800;
}

.page-about .about-next__text {
  max-width: 58ch;
  margin: 12px 0 0;
  line-height: 1.8;
  color: var(--mint);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

@media (min-width: 640px) {
  .page-about .about-figures__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-about .about-masthead__inner {
    grid-template-columns: 5fr 7fr;
    align-items: end;
  }

  .page-about .about-masthead__figure {
    margin-top: 6px;
  }

  .page-about .about-toc__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 22px;
  }

  .page-about .about-figures__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-fig__note {
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity .22s ease, transform .22s ease;
  }

  .page-about .about-fig:hover .about-fig__note,
  .page-about .about-fig:focus .about-fig__note,
  .page-about .about-fig:focus-within .about-fig__note {
    opacity: 1;
    transform: translateY(0);
  }

  .page-about .about-origin__inner {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-about .about-origin__title {
    position: sticky;
    top: 96px;
  }

  .page-about .about-paths__grid {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }

  .page-about .about-paths__map {
    position: sticky;
    top: 96px;
  }

  .page-about .about-cycle {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-cycle__step {
    padding: 54px 18px 22px;
  }

  .page-about .about-cycle__no {
    left: 18px;
    top: 20px;
  }

  .page-about .about-card-anatomy {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: 28px;
  }

  .page-about .about-versions__body {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .about-support__inner {
    grid-template-columns: 6fr 6fr;
    align-items: start;
  }

  .page-about .about-next__inner {
    display: grid;
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 32px;
  }

  .page-about .about-next__links {
    margin-top: 0;
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc__link,
  .page-about .about-path,
  .page-about .about-fig__note {
    transition: none;
  }

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