.page-about {
  --about-line: rgba(243, 246, 244, 0.14);
  --about-step: 48px;
  --about-panel: linear-gradient(155deg, rgba(18, 51, 42, 0.92), rgba(10, 30, 24, 0.94));
  position: relative;
}

.page-about .about-prose p {
  margin: 0 0 16px;
  max-width: 42em;
  color: var(--mist);
  font-size: 16.5px;
  line-height: 1.8;
}

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

.page-about .about-prose strong {
  color: var(--light);
  font-weight: 600;
}

.page-about .section {
  padding: 52px 0;
}

.page-about .section__head {
  margin-bottom: 26px;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 24px 0 40px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 118%;
  height: 150%;
  pointer-events: none;
  background:
    radial-gradient(58% 46% at 76% 14%, rgba(243, 246, 244, 0.16), transparent 70%),
    linear-gradient(201deg, rgba(245, 197, 24, 0.1) 0%, transparent 44%);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-about .about-hero__title {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(36px, 9.2vw, 72px);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--light);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 36em;
  color: var(--mist);
  font-size: 16.5px;
  line-height: 1.8;
}

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

.page-about .about-hero__figs {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 30px;
  margin: 28px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--about-line);
}

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

.page-about .about-hero__fig dt {
  margin-bottom: 5px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-hero__fig dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--light);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__figure {
  margin: 0;
  aspect-ratio: 16 / 11;
  border-radius: var(--r-lg);
  overflow: hidden;
}

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

/* ---------- 坐标 ---------- */

.page-about .about-seat__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-seat__anno {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

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

.page-about .about-seat__body .section__title::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--yellow), rgba(245, 197, 24, 0));
}

/* ---------- 五大板块 ---------- */

.page-about .about-board__head {
  max-width: 46em;
}

.page-about .about-board__visual {
  display: none;
  margin-bottom: 26px;
  padding: 10px 0 0;
  border-radius: var(--r-md);
  background:
    repeating-linear-gradient(180deg, rgba(243, 246, 244, 0.045) 0 1px, transparent 1px 9px);
}

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

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

.page-about .about-board__item {
  min-width: 0;
}

.page-about .about-board__link {
  display: block;
  height: 100%;
  padding: 20px 18px 18px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--about-line);
  border-radius: var(--r-md);
  background: var(--about-panel);
  transform: rotate(-1.5deg);
  transition: transform 0.26s var(--ease), border-color 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.page-about .about-board__item:nth-child(even) .about-board__link {
  transform: rotate(1.2deg);
}

.page-about .about-board__link:hover,
.page-about .about-board__link:focus-visible {
  transform: rotate(0deg) translateY(-2px);
  border-color: rgba(245, 197, 24, 0.55);
  box-shadow: 0 14px 32px rgba(4, 14, 11, 0.5);
  outline: none;
}

.page-about .about-board__idx {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--yellow);
}

.page-about .about-board__name {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--light);
}

.page-about .about-board__desc {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-board__path {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--yellow);
  border-bottom: 1px solid rgba(245, 197, 24, 0.4);
  padding-bottom: 2px;
}

/* ---------- 团队 ---------- */

.page-about .about-team__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-team__text .section__title {
  margin: 8px 0 18px;
}

.page-about .about-team__figure {
  margin: 0;
  aspect-ratio: 3 / 2;
  border-radius: var(--r-md);
  overflow: hidden;
}

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

.page-about .about-team__details {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-team__details .accordion__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-network {
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-network__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--light);
}

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

.page-about .about-network__node {
  position: relative;
  display: block;
  padding: 16px 16px 18px;
  border: 1px solid var(--about-line);
  border-radius: var(--r-sm);
  background: var(--glass);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-about .about-network__node::before {
  content: "";
  position: absolute;
  top: 16px;
  right: 14px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--yellow);
  opacity: 0.7;
}

.page-about .about-network__node:hover,
.page-about .about-network__node:focus {
  transform: translateY(-2px);
  border-color: rgba(245, 197, 24, 0.5);
  background: rgba(31, 92, 67, 0.28);
  outline: none;
}

.page-about .about-network__node:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

.page-about .about-network__name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--light);
}

.page-about .about-network__count {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--yellow);
}

.page-about .about-network__hint {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--cyan);
  opacity: 1;
  transition: opacity 0.24s var(--ease);
}

/* ---------- 时间轴 ---------- */

.page-about .about-path__figure {
  margin: 0 0 30px;
  aspect-ratio: 2 / 1;
  border-radius: var(--r-md);
  overflow: hidden;
}

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

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 26px;
  width: 9px;
  height: 9px;
  background: var(--yellow);
  transform: rotate(45deg);
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 42px;
  bottom: -12px;
  width: 1px;
  background: linear-gradient(180deg, rgba(245, 197, 24, 0.5), rgba(245, 197, 24, 0.05));
}

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

.page-about .about-timeline__panel summary {
  position: relative;
  display: block;
  padding: 14px 46px 15px 16px;
  list-style: none;
  cursor: pointer;
  border: 1px solid var(--about-line);
  border-radius: var(--r-md);
  background: var(--about-panel);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

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

.page-about .about-timeline__panel summary:hover {
  border-color: rgba(245, 197, 24, 0.45);
  transform: translateY(-2px);
}

.page-about .about-timeline__panel summary:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
}

.page-about .about-timeline__meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .about-timeline__idx {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--yellow);
}

.page-about .about-timeline__stage {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-timeline__name {
  display: block;
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--light);
}

.page-about .about-timeline__toggle {
  position: absolute;
  top: 50%;
  right: 16px;
  width: 16px;
  height: 16px;
  transform: translateY(-50%);
}

.page-about .about-timeline__toggle::before,
.page-about .about-timeline__toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--yellow);
  transform: translate(-50%, -50%);
}

.page-about .about-timeline__toggle::before {
  width: 12px;
  height: 2px;
}

.page-about .about-timeline__toggle::after {
  width: 2px;
  height: 12px;
  transition: transform 0.22s var(--ease);
}

.page-about .about-timeline__panel[open] .about-timeline__toggle::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-about .about-timeline__panel .accordion__body p {
  margin: 0;
  padding-top: 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 规模 ---------- */

.page-about .about-scale {
  background:
    repeating-linear-gradient(180deg, rgba(243, 246, 244, 0.045) 0 1px, transparent 1px 9px),
    linear-gradient(145deg, rgba(18, 51, 42, 0.9), rgba(10, 30, 24, 0.35));
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-scale__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-scale__cell {
  padding: 22px 18px 24px;
  background: rgba(10, 30, 24, 0.86);
}

.page-about .about-scale__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 9vw, 54px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--light);
  font-variant-numeric: tabular-nums;
}

.page-about .about-scale__unit {
  margin-left: 2px;
  font-size: 0.42em;
  color: var(--yellow);
}

.page-about .about-scale__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--light);
}

.page-about .about-scale__desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--warm);
}

/* ---------- 三条理由 ---------- */

.page-about .about-reasons__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: reason;
  display: grid;
  gap: 14px;
}

.page-about .about-reasons__item {
  position: relative;
  padding: 20px 18px 22px;
  border-top: 2px solid rgba(245, 197, 24, 0.55);
  border-radius: 0 0 var(--r-md) var(--r-md);
  background: linear-gradient(180deg, rgba(18, 51, 42, 0.72), rgba(10, 30, 24, 0.2));
}

.page-about .about-reasons__item::before {
  counter-increment: reason;
  content: "0" counter(reason);
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--yellow);
}

.page-about .about-reasons__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--light);
}

.page-about .about-reasons__desc {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-reasons__more {
  display: inline-block;
  padding-bottom: 3px;
  font-size: 13.5px;
  color: var(--yellow);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 197, 24, 0.45);
}

.page-about .about-reasons__more:hover,
.page-about .about-reasons__more:focus-visible {
  color: var(--light);
  border-bottom-color: var(--light);
  outline: none;
}

/* ---------- 收尾 ---------- */

.page-about .about-cta {
  padding: 44px 0 64px;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 20px;
  padding: 30px 22px;
  border: 1px solid var(--about-line);
  border-radius: var(--r-lg);
  background:
    linear-gradient(118deg, rgba(245, 197, 24, 0.14), rgba(226, 58, 46, 0.1) 58%, rgba(10, 30, 24, 0) 100%);
}

.page-about .about-cta__line {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--light);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板 ---------- */

@media (min-width: 760px) {
  .page-about .section {
    padding: 72px 0;
  }

  .page-about .about-board__visual {
    display: block;
  }

  .page-about .about-board__list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-board__item--wide {
    grid-column: span 3;
  }

  .page-about .about-board__item {
    grid-column: span 2;
  }

  .page-about .about-team__figure {
    aspect-ratio: 16 / 10;
  }

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

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 38px 34px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-about .section {
    padding: 88px 0;
  }

  .page-about .about-hero {
    padding: 40px 0 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
    gap: 56px;
  }

  .page-about .about-hero__figure {
    aspect-ratio: 16 / 10;
  }

  .page-about .about-seat__grid {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-seat__anno {
    writing-mode: vertical-rl;
    justify-self: start;
    padding-top: 10px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: 54px;
    align-items: start;
  }

  .page-about .about-team__figure {
    aspect-ratio: 4 / 5;
  }

  .page-about .about-team__details {
    margin-top: 34px;
  }

  .page-about .about-network__hint {
    opacity: 0.62;
  }

  .page-about .about-network__node:hover .about-network__hint,
  .page-about .about-network__node:focus .about-network__hint {
    opacity: 1;
  }

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

  .page-about .about-timeline__name {
    font-size: 23px;
  }

  .page-about .about-timeline__item {
    padding-left: 26px;
  }

  .page-about .about-timeline__item:nth-child(1) {
    margin-left: 0;
  }

  .page-about .about-timeline__item:nth-child(2) {
    margin-left: var(--about-step);
  }

  .page-about .about-timeline__item:nth-child(3) {
    margin-left: calc(var(--about-step) * 2);
  }

  .page-about .about-timeline__item:nth-child(4) {
    margin-left: calc(var(--about-step) * 3);
  }

  .page-about .about-timeline__item:nth-child(5) {
    margin-left: calc(var(--about-step) * 4);
  }

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

  .page-about .about-reasons__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 1120px) {
  .page-about .about-cta {
    padding-bottom: 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-board__link,
  .page-about .about-board__item:nth-child(even) .about-board__link,
  .page-about .about-network__node,
  .page-about .about-timeline__panel summary {
    transform: none;
    transition: none;
  }

  .page-about .about-timeline__toggle::after {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>