.page-about {
  background: var(--ly-ink);
  color: var(--ly-text);
}

.page-about .about-crumb {
  padding-top: clamp(16px, 3vw, 26px);
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 40px) 0 clamp(32px, 6vw, 56px);
  border-bottom: 1px solid var(--ly-line);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -12%;
  width: 70%;
  height: 180%;
  background: radial-gradient(circle at 50% 50%, rgba(0, 240, 200, .16), rgba(0, 240, 200, 0) 62%);
  transform: skewY(var(--ly-skew));
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 5vw, 44px);
}

.page-about .about-hero__title {
  margin: 10px 0 0;
  font-family: var(--ly-font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.4vw, 68px);
  line-height: .99;
  letter-spacing: -.03em;
  color: var(--ly-text);
}

.page-about .about-hero__lede {
  max-width: 56ch;
  margin: 16px 0 0;
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.78;
  color: var(--ly-muted);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ly-text);
}

.page-about .about-hero__facts li {
  position: relative;
  padding-left: 14px;
}

.page-about .about-hero__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ly-cyan);
}

.page-about .about-hero__facts .ly-num {
  font-size: 18px;
  color: var(--ly-cyan-soft);
}

.page-about .about-hero__mark {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 20px;
  border: 1px solid var(--ly-line-strong);
  background: var(--ly-glass);
  backdrop-filter: blur(6px);
  transform: skewY(var(--ly-skew));
}

.page-about .about-hero__mark > * {
  transform: skewY(calc(var(--ly-skew) * -1));
}

.page-about .about-hero__num {
  font-family: var(--ly-font-num);
  font-size: clamp(72px, 18vw, 112px);
  line-height: .82;
  letter-spacing: -.04em;
  color: var(--ly-cyan);
}

.page-about .about-hero__mark-label {
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ly-orange);
}

.page-about .about-hero__mark-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ly-muted);
}

/* ---------- 章节目录 ---------- */
.page-about .about-toc {
  position: sticky;
  top: 0;
  z-index: 4;
  background: rgba(6, 22, 31, .94);
  border-bottom: 1px solid var(--ly-line);
  backdrop-filter: blur(8px);
}

.page-about .about-toc__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 8px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-toc__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ly-muted);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: color .16s var(--ly-ease), border-color .16s var(--ly-ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link[aria-current="true"] {
  color: var(--ly-cyan);
  border-color: var(--ly-line-strong);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding: clamp(38px, 6.4vw, 76px) 0;
}

.page-about .about-sec + .about-sec {
  border-top: 1px solid var(--ly-line);
}

.page-about .about-sec--band {
  background: var(--ly-panel);
}

.page-about .about-head {
  margin-bottom: clamp(22px, 4vw, 38px);
}

.page-about .about-head h2 {
  margin: 10px 0 0;
  font-family: var(--ly-font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 46px);
  line-height: 1.05;
  letter-spacing: -.025em;
  color: var(--ly-text);
}

.page-about .about-head .ly-lede {
  margin: 12px 0 0;
  max-width: 62ch;
}

/* ---------- 起点 ---------- */
.page-about .about-story {
  display: grid;
  gap: 26px;
}

.page-about .about-story__prose p {
  margin: 0 0 16px;
}

.page-about .about-story__prose p:last-child {
  margin-bottom: 0;
}

.page-about .about-note {
  align-self: start;
  padding: 20px;
  border: 1px dashed var(--ly-line-strong);
  background: var(--ly-panel);
}

.page-about .about-note__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ly-orange);
}

.page-about .about-note__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-note__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ly-text);
}

.page-about .about-note__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .65em;
  width: 8px;
  height: 2px;
  background: var(--ly-cyan);
}

/* ---------- 时间轴 ---------- */
.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 52px;
  padding-bottom: 34px;
  transition: background-color .5s var(--ly-ease);
}

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

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 28px;
  bottom: -4px;
  border-left: 1px dashed var(--ly-line-strong);
}

.page-about .about-tl__item:last-child::before {
  content: none;
}

.page-about .about-tl__dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 23px;
  height: 23px;
  border-radius: 50%;
  border: 1px solid var(--ly-line-strong);
  background: var(--ly-ink);
  text-decoration: none;
}

.page-about .about-tl__dot::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: var(--ly-cyan);
  transition: inset .16s var(--ly-ease);
}

.page-about .about-tl__dot:hover::after,
.page-about .about-tl__dot:focus-visible::after {
  inset: 2px;
}

.page-about .about-tl__year {
  margin: 0 0 6px;
  font-family: var(--ly-font-num);
  font-size: 22px;
  letter-spacing: .02em;
  color: var(--ly-cyan);
}

.page-about .about-tl__body h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ly-text);
}

.page-about .about-tl__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ly-muted);
}

.page-about .about-tl__item:target {
  background: linear-gradient(90deg, rgba(0, 240, 200, .12), rgba(0, 240, 200, 0) 70%);
  box-shadow: inset 3px 0 0 var(--ly-cyan);
}

.page-about .about-tl__item:target .about-tl__dot::after {
  inset: 2px;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 26px;
}

.page-about .about-team__media {
  margin: 0;
  border: 1px solid var(--ly-line);
  overflow: hidden;
  background: var(--ly-panel-2);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team__media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ly-muted);
  background: var(--ly-panel);
  border-top: 1px solid var(--ly-line);
}

.page-about .about-role {
  margin-bottom: 12px;
  border: 1px solid var(--ly-line);
  border-left: 3px solid var(--ly-muted);
  background: var(--ly-panel);
  transition: border-left-color .2s var(--ly-ease), transform .2s var(--ly-ease);
}

.page-about .about-role:hover {
  transform: translateY(-2px);
}

.page-about .about-role[open] {
  border-left-color: var(--ly-cyan);
}

.page-about .about-role__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-height: 44px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-role__head::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--ly-font-num);
  font-size: 16px;
  color: var(--ly-muted);
}

.page-about .about-role[open] .about-role__head::after {
  content: "－";
  color: var(--ly-cyan);
}

.page-about .about-role__num {
  font-family: var(--ly-font-num);
  font-size: 32px;
  line-height: 1;
  color: var(--ly-cyan);
}

.page-about .about-role__name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ly-text);
}

.page-about .about-role__body {
  padding: 0 18px 18px;
}

.page-about .about-role__body p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ly-muted);
}

.page-about .about-role__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-about .about-role__list li {
  position: relative;
  padding-left: 15px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ly-cyan-soft);
}

.page-about .about-role__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ly-orange);
}

.page-about .about-audit {
  margin-top: 26px;
  padding: 16px 18px;
  border: 1px dashed var(--ly-line-strong);
  background: rgba(18, 59, 52, .6);
}

.page-about .about-audit__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ly-orange);
}

.page-about .about-audit__flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.page-about .about-audit__step {
  padding: 6px 12px;
  font-size: 13px;
  color: var(--ly-text);
  background: var(--ly-panel-2);
  border: 1px solid var(--ly-line);
}

.page-about .about-audit__step + .about-audit__step {
  position: relative;
  margin-left: 12px;
}

.page-about .about-audit__step + .about-audit__step::before {
  content: "→";
  position: absolute;
  left: -18px;
  color: var(--ly-cyan);
  font-family: var(--ly-font-num);
}

.page-about .about-audit__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ly-muted);
}

/* ---------- 一天怎么过 ---------- */
.page-about .about-day {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-day__item {
  position: relative;
  padding: 22px 16px 4px 0;
  border-top: 2px solid var(--ly-line-strong);
}

.page-about .about-day__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: -7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ly-cyan);
}

.page-about .about-day__phase {
  display: block;
  font-family: var(--ly-font-display);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: .04em;
  color: var(--ly-text);
}

.page-about .about-day__time {
  display: inline-block;
  margin: 6px 0 10px;
  padding: 2px 8px;
  font-family: var(--ly-font-num);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ly-ink);
  background: var(--ly-orange);
}

.page-about .about-day__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ly-muted);
}

.page-about .about-day__foot {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ly-muted);
}

.page-about .about-day__foot a {
  color: var(--ly-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 跨时区与社群 ---------- */
.page-about .about-world {
  display: grid;
  gap: 26px;
}

.page-about .about-world__copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-muted);
}

.page-about .about-world__media,
.page-about .about-coop__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--ly-line);
  overflow: hidden;
  background: var(--ly-panel-2);
}

.page-about .about-world__media::after,
.page-about .about-coop__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(0, 240, 200, .14), rgba(6, 22, 31, 0) 58%);
  pointer-events: none;
}

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

.page-about .about-world__media img {
  aspect-ratio: 14 / 9;
}

.page-about .about-coop__media img {
  aspect-ratio: 3 / 2;
}

.page-about .about-world__media figcaption,
.page-about .about-coop__media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ly-muted);
  background: var(--ly-panel);
  border-top: 1px solid var(--ly-line);
}

.page-about .about-world__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.page-about .about-stat {
  padding-left: 12px;
  border-left: 2px solid var(--ly-cyan);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--ly-font-num);
  font-size: clamp(22px, 4vw, 28px);
  line-height: 1.1;
  color: var(--ly-cyan-soft);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ly-muted);
}

.page-about .about-coop {
  display: grid;
  gap: 24px;
  margin-top: clamp(28px, 5vw, 46px);
  padding-top: clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--ly-line);
}

.page-about .about-coop__copy h3 {
  margin: 0 0 12px;
  font-family: var(--ly-font-display);
  font-size: clamp(20px, 3.4vw, 28px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ly-text);
}

.page-about .about-coop__copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-muted);
}

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

.page-about .about-coop__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ly-text);
}

.page-about .about-coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 2px;
  background: var(--ly-orange);
}

.page-about .about-coop__list a {
  color: var(--ly-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 底子 ---------- */
.page-about .about-trust {
  display: grid;
  gap: 16px;
}

.page-about .about-trust__item {
  padding: 18px 18px 20px;
  background: var(--ly-ink);
  border: 1px solid var(--ly-line);
}

.page-about .about-trust__num {
  display: block;
  font-family: var(--ly-font-num);
  font-size: clamp(28px, 5.4vw, 40px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ly-cyan);
}

.page-about .about-trust__item h3 {
  margin: 10px 0 8px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ly-text);
}

.page-about .about-trust__item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--ly-muted);
}

/* ---------- 收束 ---------- */
.page-about .about-grow {
  background:
    radial-gradient(circle at 88% 12%, rgba(0, 240, 200, .14), rgba(0, 240, 200, 0) 55%),
    var(--ly-ink);
}

.page-about .about-grow__title {
  margin: 12px 0 0;
  font-family: var(--ly-font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.6vw, 54px);
  line-height: 1.02;
  letter-spacing: -.03em;
  color: var(--ly-text);
}

.page-about .about-grow__text {
  max-width: 58ch;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ly-muted);
}

.page-about .about-grow__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-grow__top {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 4px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ly-cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .16s var(--ly-ease), color .16s var(--ly-ease);
}

.page-about .about-grow__top:hover {
  color: var(--ly-cyan);
  border-bottom-color: var(--ly-cyan);
}

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

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

@media (min-width: 820px) {
  .page-about .about-day {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .about-day__item {
    padding-right: 22px;
  }

  .page-about .about-day__item + .about-day__item {
    padding-left: 22px;
    border-left: 1px dashed var(--ly-line);
  }

  .page-about .about-day__item + .about-day__item::before {
    left: 22px;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.65fr 1fr;
    align-items: end;
  }

  .page-about .about-story {
    grid-template-columns: 1.4fr .6fr;
    gap: 40px;
    align-items: start;
  }

  .page-about .about-tl__item {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 28px;
    padding-left: 66px;
    padding-bottom: 46px;
  }

  .page-about .about-tl__item::before {
    left: 14px;
    top: 34px;
  }

  .page-about .about-tl__dot {
    top: 6px;
    width: 29px;
    height: 29px;
  }

  .page-about .about-tl__year {
    margin: 0;
    font-size: 32px;
    line-height: 1.05;
    text-align: right;
    color: var(--ly-cyan-soft);
  }
}

@media (min-width: 940px) {
  .page-about .about-team {
    grid-template-columns: 5fr 7fr;
    gap: 36px;
    align-items: start;
  }

  .page-about .about-team__cards .about-role:nth-child(2) {
    margin-left: 24px;
  }

  .page-about .about-team__cards .about-role:nth-child(3) {
    margin-left: 48px;
    margin-bottom: 0;
  }

  .page-about .about-world {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
  }

  .page-about .about-coop {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
  }
}

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

  .page-about .about-hero__mark {
    padding: 26px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-tl__dot::after,
  .page-about .about-toc__link,
  .page-about .about-grow__top {
    transition: none;
  }

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