.page-about {
  --about-gap: clamp(20px, 4vw, 40px);
  background: var(--ink);
  color: var(--frost);
  overflow-x: clip;
}

.page-about .wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 4vw, 36px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .breadcrumb a {
  color: var(--text-soft);
  text-decoration: none;
  transition: color 0.24s var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--neon);
}

.page-about .breadcrumb__sep {
  color: rgba(143, 163, 155, 0.5);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 4vw, 48px) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(30, 90, 255, 0.22), transparent 62%),
    radial-gradient(90% 80% at -5% 8%, rgba(155, 225, 93, 0.14), transparent 58%),
    var(--ink);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(244, 248, 245, 0.03) 0 1px, transparent 1px 5px);
}

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

.page-about .about-hero__copy .lede {
  margin-top: 16px;
  max-width: 46ch;
  color: var(--text-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 32px);
}

.page-about .about-hero__figure {
  margin: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

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

.page-about .media-frame__caption {
  display: block;
  padding: 12px 16px 0;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 四季色环 ---------- */
.page-about .about-dial {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 20px;
  margin-top: clamp(30px, 5vw, 52px);
  padding-top: clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--hair);
  align-items: center;
}

.page-about .about-dial__ring {
  position: relative;
  width: 148px;
  height: 148px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(
    from -90deg,
    var(--spring) 0 25%,
    var(--summer) 25% 50%,
    var(--amber) 50% 75%,
    var(--frost) 75% 100%
  );
  box-shadow: 0 0 0 1px var(--hair-strong), 0 0 54px rgba(57, 255, 182, 0.16);
}

.page-about .about-dial__ring::before {
  content: "";
  position: absolute;
  inset: 22px;
  border-radius: 50%;
  background: var(--ink);
}

.page-about .about-dial__core {
  position: relative;
  z-index: 1;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--neon);
}

.page-about .about-dial__note {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}

/* ---------- 章节通用 ---------- */
.page-about .about-block {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-block--panel {
  background: var(--panel);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}

.page-about .about-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(26px, 4vw, 42px);
}

.page-about .about-head__no {
  font-family: var(--font-mono);
  font-size: 38px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--spring);
}

.page-about .about-head__vnote {
  display: none;
}

.page-about .about-head__body .chapter__title {
  margin: 0 0 12px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.2;
  color: var(--frost);
}

.page-about .about-head__body .chapter__note {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .h3 {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.35;
  color: var(--frost);
}

.page-about .eyebrow {
  display: inline-block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--neon);
}

/* ---------- 四季专题切换 ---------- */
.page-about .about-season {
  position: relative;
}

.page-about .about-season__input {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-about .about-season__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-about .about-season__tab {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--hair-strong);
  background: rgba(14, 43, 37, 0.72);
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
  transition: background 0.24s var(--ease), color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-season__tab::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--slate);
  flex: none;
}

.page-about .about-season__tab--spring::before { background: var(--spring); }
.page-about .about-season__tab--summer::before { background: var(--summer); }
.page-about .about-season__tab--autumn::before { background: var(--amber); }
.page-about .about-season__tab--winter::before { background: var(--frost); }

.page-about .about-season__tab:hover {
  border-color: var(--neon);
  color: var(--frost);
}

.page-about #about-season-spring:checked ~ .about-season__tabs .about-season__tab--spring,
.page-about #about-season-summer:checked ~ .about-season__tabs .about-season__tab--summer,
.page-about #about-season-autumn:checked ~ .about-season__tabs .about-season__tab--autumn,
.page-about #about-season-winter:checked ~ .about-season__tabs .about-season__tab--winter {
  background: var(--frost);
  border-color: transparent;
  color: var(--ink);
}

.page-about #about-season-spring:focus-visible ~ .about-season__tabs .about-season__tab--spring,
.page-about #about-season-summer:focus-visible ~ .about-season__tabs .about-season__tab--summer,
.page-about #about-season-autumn:focus-visible ~ .about-season__tabs .about-season__tab--autumn,
.page-about #about-season-winter:focus-visible ~ .about-season__tabs .about-season__tab--winter {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-about .about-season__panel {
  display: none;
  padding: clamp(20px, 3.4vw, 34px);
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: var(--panel);
}

.page-about #about-season-spring:checked ~ .about-season__panels .about-season__panel--spring,
.page-about #about-season-summer:checked ~ .about-season__panels .about-season__panel--summer,
.page-about #about-season-autumn:checked ~ .about-season__panels .about-season__panel--autumn,
.page-about #about-season-winter:checked ~ .about-season__panels .about-season__panel--winter {
  display: block;
}

.page-about .about-season__grid {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-about .about-season__grid p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .about-season__points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .about-season__points li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-about .about-season__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  opacity: 0.85;
}

/* ---------- 编辑与数据双轨 ---------- */
.page-about .about-duo {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
  align-items: start;
}

.page-about .about-duo__figure {
  margin: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.page-about .about-duo__body > p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .about-flow {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.page-about .about-flow__step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-about .about-flow__k {
  display: grid;
  place-items: center;
  height: 30px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(155, 225, 93, 0.42);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--spring);
}

.page-about .about-flow__txt p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 30px);
  padding-top: clamp(20px, 3vw, 26px);
  border-top: 1px solid var(--hair);
}

.page-about .about-stats .stat {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-about .about-stats .stat__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
  color: var(--spring);
}

.page-about .about-stats .stat__label {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

/* ---------- 里程碑 ---------- */
.page-about .about-timeline__figure {
  margin: 0 0 clamp(26px, 4vw, 40px);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.page-about .about-track {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-about .about-track__node {
  position: relative;
  padding: 36px 20px 22px;
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: rgba(7, 30, 26, 0.72);
  min-width: 0;
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.page-about .about-track__node::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--spring);
  box-shadow: 0 0 0 4px rgba(155, 225, 93, 0.16);
}

.page-about .about-track__node:nth-child(2)::before {
  background: var(--summer);
  box-shadow: 0 0 0 4px rgba(30, 90, 255, 0.18);
}

.page-about .about-track__node:nth-child(3)::before {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 177, 59, 0.18);
}

.page-about .about-track__node:nth-child(4)::before {
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(57, 255, 182, 0.18);
}

.page-about .about-track__tag {
  display: block;
  margin-bottom: 8px;
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .about-track__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.35;
  color: var(--frost);
}

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

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

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  display: grid;
  gap: 16px;
}

.page-about .about-eco__card {
  padding: clamp(20px, 3.2vw, 30px);
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(14, 43, 37, 0.95), rgba(7, 30, 26, 0.9));
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-about .about-eco__card:hover {
  border-color: rgba(57, 255, 182, 0.45);
  transform: translateY(-3px);
}

.page-about .about-eco__num {
  display: block;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1;
  color: var(--amber);
  margin-bottom: 12px;
}

.page-about .about-eco__title {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.35;
  color: var(--frost);
}

.page-about .about-eco__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .about-eco__foot {
  margin: clamp(22px, 3.4vw, 30px) 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .link-arrow {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 182, 0.4);
  padding-bottom: 1px;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease);
}

.page-about .link-arrow:hover,
.page-about .link-arrow:focus-visible {
  color: var(--frost);
  border-color: var(--frost);
}

/* ---------- 荣誉 ---------- */
.page-about .about-awards {
  display: grid;
  gap: 16px;
}

.page-about .about-awards__item {
  position: relative;
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 177, 59, 0.28);
  background:
    linear-gradient(150deg, rgba(255, 177, 59, 0.1), transparent 58%),
    rgba(14, 43, 37, 0.85);
}

.page-about .about-awards__item--alt {
  border-color: rgba(30, 90, 255, 0.4);
  background:
    linear-gradient(150deg, rgba(30, 90, 255, 0.16), transparent 58%),
    rgba(14, 43, 37, 0.85);
}

.page-about .about-awards__year {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 177, 59, 0.16);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .about-awards__item--alt .about-awards__year {
  background: rgba(30, 90, 255, 0.2);
  color: var(--frost);
}

.page-about .about-awards__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.35;
  color: var(--frost);
}

.page-about .about-awards__text {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-soft);
}

/* ---------- 持续维护 ---------- */
.page-about .about-keep__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-keep__item {
  padding: clamp(20px, 3.2vw, 30px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--hair);
  background: rgba(7, 30, 26, 0.6);
}

.page-about .about-keep__k {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-about .about-keep__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.3vw, 20px);
  line-height: 1.35;
  color: var(--frost);
}

.page-about .about-keep__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 结尾 ---------- */
.page-about .about-end {
  padding: 0 0 clamp(48px, 7vw, 88px);
  background: var(--ink);
}

.page-about .about-end__panel {
  display: grid;
  gap: clamp(22px, 3.6vw, 36px);
  padding: clamp(26px, 4.4vw, 48px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--hair-strong);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(155, 225, 93, 0.14), transparent 60%),
    radial-gradient(90% 120% at 0% 100%, rgba(30, 90, 255, 0.16), transparent 62%),
    var(--panel);
}

.page-about .about-end__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.25;
  color: var(--frost);
}

.page-about .about-end__copy p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}

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

.page-about .about-end__links {
  margin: clamp(16px, 2.6vw, 22px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  font-size: 14.5px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-dial {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 26px;
  }

  .page-about .about-season__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

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

  .page-about .about-end__panel {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-about .about-dial__ring {
    width: 168px;
    height: 168px;
  }

  .page-about .about-head {
    grid-template-columns: 96px 28px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }

  .page-about .about-head__no {
    font-size: 72px;
  }

  .page-about .about-head__vnote {
    display: block;
    padding-top: 8px;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--slate);
    white-space: nowrap;
  }

  .page-about .about-duo {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-about .about-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-track::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 22px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--spring), var(--summer) 38%, var(--amber) 70%, var(--frost));
    opacity: 0.55;
  }

  .page-about .about-eco,
  .page-about .about-keep__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-eco__card:nth-child(2) {
    margin-top: 28px;
  }

  .page-about .about-eco__card:nth-child(3) {
    margin-top: 56px;
  }

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

  .page-about .about-awards__item--alt {
    margin-top: 32px;
  }
}

@media (hover: hover) and (min-width: 900px) {
  .page-about .about-track__node:hover {
    transform: translateY(-4px);
    border-color: rgba(57, 255, 182, 0.5);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  }

  .page-about .about-track__extra {
    display: grid;
    grid-template-rows: 0fr;
    margin-top: 0;
    transition: grid-template-rows 0.34s var(--ease), margin-top 0.34s var(--ease);
  }

  .page-about .about-track__extra > span {
    overflow: hidden;
  }

  .page-about .about-track__node:hover .about-track__extra,
  .page-about .about-track__node:focus-within .about-track__extra {
    grid-template-rows: 1fr;
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-track__node,
  .page-about .about-eco__card,
  .page-about .about-season__tab,
  .page-about .about-track__extra {
    transition: none;
  }

  .page-about .about-track__node:hover,
  .page-about .about-eco__card:hover {
    transform: none;
  }
}
<<<END>>>