.page-about {
  --about-pad: clamp(18px, 4vw, 40px);
  --about-toc-w: 220px;
  background: var(--night-900);
  color: var(--fog-100);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(22px, 4.4vw, 46px) 0 clamp(30px, 5vw, 62px);
  background:
    radial-gradient(92% 120% at 92% -18%, rgba(200, 255, 77, 0.15), transparent 62%),
    radial-gradient(72% 92% at -8% 108%, rgba(77, 232, 194, 0.11), transparent 64%),
    var(--pitch-800);
  border-bottom: 1px solid var(--line-600);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(36, 56, 45, 0.5) 0 1px,
    transparent 1px 104px
  );
  opacity: 0.55;
  pointer-events: none;
}

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

.page-about .about-hero__kicker {
  margin: clamp(18px, 3vw, 30px) 0 0;
  font-family: var(--font-number);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.26em;
  color: var(--cyan-300);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6.1vw, 72px);
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--white-000);
  text-wrap: balance;
  max-width: 20ch;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--lime-400);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.55vw, 17.5px);
  line-height: 1.78;
  color: var(--fog-100);
}

.page-about .about-figures {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line-600);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 14px;
}

.page-about .about-figure__num {
  display: block;
  font-family: var(--font-number);
  font-weight: 800;
  font-size: clamp(30px, 4.6vw, 48px);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--lime-400);
}

.page-about .about-figure__num sup {
  font-size: 0.4em;
  vertical-align: super;
  margin-left: 2px;
  color: var(--lime-200);
}

.page-about .about-figure__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--fog-400);
}

/* ---------- 主体双栏 ---------- */
.page-about .about-body {
  padding-top: clamp(26px, 4vw, 54px);
  padding-bottom: clamp(44px, 6vw, 86px);
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  min-width: 0;
}

/* ---------- 导视目录 ---------- */
.page-about .about-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-number);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--fog-400);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  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;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line-600);
  background: var(--panel-700);
  color: var(--fog-100);
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.2s var(--ease-out), color 0.2s var(--ease-out),
    background 0.2s var(--ease-out);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  border-color: var(--lime-400);
  color: var(--lime-400);
  outline: none;
}

.page-about .about-toc__num {
  font-family: var(--font-number);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--cyan-300);
}

/* ---------- 面板通用 ---------- */
.page-about .about-stream {
  display: grid;
  gap: clamp(14px, 2.2vw, 22px);
  min-width: 0;
}

.page-about .about-panel {
  position: relative;
  border-radius: var(--radius-panel);
  background: var(--panel-700);
  padding: var(--about-pad);
  overflow: hidden;
}

.page-about .about-panel--plain {
  background: var(--pitch-800);
}

.page-about .about-panel__index {
  display: block;
  font-family: var(--font-number);
  font-size: clamp(46px, 8vw, 86px);
  font-weight: 800;
  line-height: 0.76;
  letter-spacing: -0.04em;
  color: rgba(200, 255, 77, 0.16);
  margin-bottom: 10px;
  user-select: none;
}

.page-about .about-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.1vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--white-000);
  text-wrap: balance;
}

.page-about .about-prose {
  margin-top: 16px;
  display: grid;
  gap: 14px;
  max-width: 68ch;
}

.page-about .about-prose p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--fog-100);
}

.page-about .about-prose a {
  color: var(--cyan-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(77, 232, 194, 0.45);
  transition: color 0.18s var(--ease-out), border-color 0.18s var(--ease-out);
}

.page-about .about-prose a:hover,
.page-about .about-prose a:focus-visible {
  color: var(--lime-400);
  border-bottom-color: var(--lime-400);
  outline: none;
}

/* ---------- 01 起点（带图面板） ---------- */
.page-about .about-feature {
  position: relative;
  border-radius: var(--radius-panel);
  overflow: hidden;
  background: var(--night-900);
  min-height: 320px;
  display: grid;
}

.page-about .about-feature__media {
  position: absolute;
  inset: 0;
}

.page-about .about-feature__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.68) contrast(1.06);
  opacity: 0.62;
}

.page-about .about-feature__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    58% 68% at 84% 16%,
    rgba(200, 255, 77, 0.2),
    transparent 66%
  );
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-about .about-feature__body {
  position: relative;
  z-index: 1;
  padding: var(--about-pad);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(
    180deg,
    rgba(7, 12, 10, 0.46) 0%,
    rgba(7, 12, 10, 0.9) 52%,
    rgba(7, 12, 10, 0.97) 100%
  );
}

/* ---------- 02 团队档案卡 ---------- */
.page-about .team-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .team-card {
  position: relative;
  padding: 18px 18px 18px 22px;
  border-radius: 10px;
  background: rgba(12, 23, 18, 0.86);
  border: 1px solid var(--line-600);
  transition: border-color 0.22s var(--ease-out), transform 0.22s var(--ease-out),
    background 0.22s var(--ease-out);
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 2px;
  background: var(--cyan-300);
  transition: background 0.22s var(--ease-out);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  border-color: rgba(200, 255, 77, 0.5);
  background: rgba(18, 32, 25, 0.96);
  transform: translateY(-2px);
}

.page-about .team-card:hover::before,
.page-about .team-card:focus-within::before {
  background: var(--lime-400);
}

.page-about .team-card__role {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--white-000);
}

.page-about .team-card__desc {
  margin: 9px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--fog-100);
}

.page-about .team-card__tags {
  list-style: none;
  margin: 13px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  opacity: 0.55;
  transition: opacity 0.22s var(--ease-out);
}

.page-about .team-card:hover .team-card__tags,
.page-about .team-card:focus-within .team-card__tags {
  opacity: 1;
}

.page-about .team-tag {
  font-size: 11.5px;
  letter-spacing: 0.05em;
  padding: 3px 9px;
  border-radius: 999px;
  color: var(--cyan-300);
  background: rgba(77, 232, 194, 0.1);
  border: 1px solid rgba(77, 232, 194, 0.24);
}

/* ---------- 03 内容链路 ---------- */
.page-about .chain {
  margin-top: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .chain__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 18px;
}

.page-about .chain__steps::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(
    180deg,
    var(--lime-400) 0%,
    var(--cyan-300) 58%,
    transparent 100%
  );
  opacity: 0.4;
}

.page-about .chain-step {
  position: relative;
  padding-left: 46px;
}

.page-about .chain-step__num {
  position: absolute;
  left: 0;
  top: 0;
  width: 31px;
  height: 31px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-number);
  font-size: 13px;
  font-weight: 800;
  color: var(--night-900);
  background: var(--lime-400);
  box-shadow: 0 0 0 4px rgba(200, 255, 77, 0.12);
}

.page-about .chain-step__title {
  margin: 3px 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--white-000);
}

.page-about .chain-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--fog-100);
}

.page-about .chain__media {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  background: var(--night-900);
  border: 1px solid var(--line-600);
}

.page-about .chain__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.05);
}

.page-about .chain__media figcaption {
  padding: 11px 13px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--fog-400);
  background: var(--pitch-800);
  border-top: 1px solid var(--line-600);
}

/* ---------- 04 赛季节奏 ---------- */
.page-about .about-season {
  position: relative;
  border-radius: var(--radius-panel);
  overflow: hidden;
  padding: var(--about-pad);
  background: var(--night-900);
}

.page-about .about-season__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-season__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  filter: saturate(0.6) contrast(1.08);
}

.page-about .about-season__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(7, 12, 10, 0.84) 0%,
    rgba(7, 12, 10, 0.95) 62%,
    rgba(7, 12, 10, 0.98) 100%
  );
}

.page-about .about-season > *:not(.about-season__bg) {
  position: relative;
  z-index: 1;
}

.page-about .season-track {
  margin-top: 22px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(232px, 84%);
  gap: 12px;
  overflow-x: auto;
  padding: 4px 4px 14px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .season-card {
  scroll-snap-align: start;
  padding: 18px;
  border-radius: 10px;
  background: rgba(7, 12, 10, 0.78);
  border: 1px solid var(--line-600);
  border-top: 2px solid var(--lime-400);
}

.page-about .season-card:nth-child(2) {
  border-top-color: var(--cyan-300);
}

.page-about .season-card:nth-child(3) {
  border-top-color: var(--amber-400);
}

.page-about .season-card__phase {
  margin: 0;
  font-family: var(--font-number);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--lime-400);
}

.page-about .season-card:nth-child(2) .season-card__phase {
  color: var(--cyan-300);
}

.page-about .season-card:nth-child(3) .season-card__phase {
  color: var(--amber-400);
}

.page-about .season-card__title {
  margin: 9px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--white-000);
}

.page-about .season-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--fog-100);
}

/* ---------- 05 合作生态 ---------- */
.page-about .eco-stats {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .eco-stat {
  padding: 14px;
  border-radius: 10px;
  background: rgba(77, 232, 194, 0.06);
  border: 1px solid rgba(77, 232, 194, 0.2);
}

.page-about .eco-stat__num {
  display: block;
  font-family: var(--font-number);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1;
  color: var(--cyan-300);
}

.page-about .eco-stat__num sup {
  font-size: 0.42em;
  vertical-align: super;
}

.page-about .eco-stat__label {
  display: block;
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--fog-400);
}

/* ---------- 06 服务与联系 ---------- */
.page-about .about-contact {
  list-style: none;
  margin: 22px 0 0;
  padding: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  border-radius: 10px;
  background: rgba(255, 154, 60, 0.07);
  border: 1px solid rgba(255, 154, 60, 0.24);
}

.page-about .about-contact__label {
  display: block;
  font-family: var(--font-number);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--amber-400);
}

.page-about .about-contact__value {
  display: block;
  margin-top: 7px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--fog-100);
  word-break: break-word;
}

.page-about .about-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-totop {
  margin-top: 26px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--line-600);
  background: transparent;
  color: var(--fog-400);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.page-about .about-totop:hover,
.page-about .about-totop:focus-visible {
  color: var(--lime-400);
  border-color: var(--lime-400);
  outline: none;
}

.page-about .about-totop__arrow {
  font-family: var(--font-number);
  font-size: 14px;
}

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

  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

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

@media (min-width: 900px) {
  .page-about .about-feature__body {
    justify-content: center;
    padding: clamp(28px, 4vw, 56px);
    background: linear-gradient(
      100deg,
      rgba(7, 12, 10, 0.96) 0%,
      rgba(7, 12, 10, 0.8) 52%,
      rgba(7, 12, 10, 0.26) 100%
    );
  }

  .page-about .chain {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 34px;
    align-items: start;
  }

  .page-about .season-track {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow: visible;
    padding: 4px 0 0;
    scroll-snap-type: none;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-toc-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

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

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

  .page-about .about-toc__link {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px 10px 14px;
    border-radius: 0;
    border: 0;
    border-left: 1px solid var(--line-600);
    background: transparent;
    white-space: normal;
    text-align: left;
  }

  .page-about .about-toc__link:hover,
  .page-about .about-toc__link:focus-visible {
    border-left-color: var(--lime-400);
    background: rgba(200, 255, 77, 0.06);
    color: var(--lime-400);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .team-card::before,
  .page-about .team-card__tags,
  .page-about .about-toc__link,
  .page-about .about-totop {
    transition: none;
  }

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