.page-about {
  --about-line-color: rgba(232, 242, 236, 0.14);
  --about-muted: rgba(232, 242, 236, 0.72);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.5rem, 4vw, 2.5rem) clamp(3rem, 8vw, 6rem);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -14%;
  width: min(660px, 80vw);
  height: min(660px, 80vw);
  background: radial-gradient(closest-side, rgba(198, 255, 61, 0.15), rgba(198, 255, 61, 0) 72%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--lime) 0%, rgba(198, 255, 61, 0.08) 42%, transparent 100%);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 5vw, 3.5rem);
  margin-top: clamp(1.5rem, 4vw, 2.75rem);
}

.page-about .about-hero__lead .eyebrow {
  margin-bottom: 0.85rem;
}

.page-about .about-hero__lead h1 {
  margin: 0;
  font-family: var(--font-cn);
  font-size: clamp(2rem, 6.4vw, 4.1rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.035em;
  color: var(--white);
  max-width: 20ch;
}

.page-about .about-hero__intro {
  margin: clamp(1.1rem, 3vw, 1.6rem) 0 0;
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.08rem);
  line-height: 1.82;
  color: var(--about-muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  overflow: hidden;
}

.page-about .about-hero__facts > div {
  background: var(--console);
  padding: clamp(0.85rem, 2.5vw, 1.15rem);
}

.page-about .about-hero__facts dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(232, 242, 236, 0.52);
}

.page-about .about-hero__facts dd {
  margin: 0.45rem 0 0;
  font-family: var(--font-num);
  font-size: clamp(1.3rem, 3.4vw, 1.8rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
  color: var(--lime);
}

/* ---------- 赛季脉络 ---------- */
.page-about .about-line {
  background: var(--console);
  border-block: 1px solid var(--line-soft);
}

.page-about .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}

.page-about .about-line__hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--orange);
  text-transform: uppercase;
}

.page-about .about-line__layout {
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-line__figure,
.page-about .about-data__figure,
.page-about .about-assets__figure {
  margin: 0;
}

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

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

.page-about .about-line__node {
  position: relative;
  padding: 0 0 clamp(1.35rem, 3.5vw, 1.9rem) 2.5rem;
}

.page-about .about-line__node::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0.95rem;
  bottom: 0;
  width: 2px;
  background: var(--about-line-color);
}

.page-about .about-line__node:last-child::before {
  display: none;
}

.page-about .about-line__node::after {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.9rem;
  width: 16px;
  height: 16px;
  border-radius: 4px 4px 4px 9px;
  background: var(--console);
  border: 2px solid var(--moss);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-line__node[open]::after {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: 0 0 0 5px rgba(198, 255, 61, 0.14);
}

.page-about .about-line__node > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.9rem;
  padding-top: 0.7rem;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-line__node > summary::marker {
  content: "";
}

.page-about .about-line__node > summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
  border-radius: 4px;
}

.page-about .about-line__year {
  font-family: var(--font-num);
  font-size: clamp(1.55rem, 4.2vw, 2.15rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.page-about .about-line__title {
  font-size: clamp(0.98rem, 2vw, 1.12rem);
  font-weight: 600;
  color: var(--white);
}

.page-about .about-line__node > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--orange);
}

.page-about .about-line__node[open] > summary::after {
  content: "–";
}

.page-about .about-line__body {
  padding-top: 0.7rem;
}

.page-about .about-line__body p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--about-muted);
}

/* ---------- 数据维护 ---------- */
.page-about .about-data {
  padding-block: clamp(2.75rem, 7vw, 5.5rem);
}

.page-about .about-data__top {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-about .about-data__intro h2 {
  margin: 0.7rem 0 0;
}

.page-about .about-data__intro > p:last-child {
  margin: clamp(0.9rem, 2.5vw, 1.3rem) 0 0;
  max-width: 62ch;
  line-height: 1.8;
  color: var(--about-muted);
}

.page-about .about-data__list {
  list-style: none;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: 0;
}

.page-about .about-data__item {
  padding: clamp(1.15rem, 3vw, 1.7rem) 0;
  border-top: 1px solid var(--line-soft);
  transition: border-color 0.25s ease, padding-left 0.25s ease;
}

.page-about .about-data__item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-data__item:hover {
  border-top-color: var(--amber);
  padding-left: 0.35rem;
}

.page-about .about-data__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-data__item h3 {
  margin: 0.55rem 0 0;
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-data__item p {
  margin: 0.6rem 0 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--about-muted);
}

.page-about .about-data__foot {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--lime);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--about-muted);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: linear-gradient(158deg, var(--console) 0%, var(--moss) 100%);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-team__intro {
  margin: clamp(0.9rem, 2.5vw, 1.25rem) 0 0;
  max-width: 60ch;
  line-height: 1.8;
  color: var(--about-muted);
}

.page-about .about-team__tabs {
  position: relative;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-team__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.page-about .about-team__labels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__labels label {
  display: inline-flex;
  align-items: center;
  padding: 0.52rem 1rem;
  font-size: 0.92rem;
  color: rgba(232, 242, 236, 0.62);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.page-about .about-team__labels label:hover {
  color: var(--white);
  border-color: var(--lime);
}

.page-about #about-role-edit:checked ~ .about-team__labels label[for="about-role-edit"],
.page-about #about-role-observe:checked ~ .about-team__labels label[for="about-role-observe"],
.page-about #about-role-viz:checked ~ .about-team__labels label[for="about-role-viz"],
.page-about #about-role-eng:checked ~ .about-team__labels label[for="about-role-eng"] {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
  font-weight: 600;
}

.page-about #about-role-edit:focus-visible ~ .about-team__labels label[for="about-role-edit"],
.page-about #about-role-observe:focus-visible ~ .about-team__labels label[for="about-role-observe"],
.page-about #about-role-viz:focus-visible ~ .about-team__labels label[for="about-role-viz"],
.page-about #about-role-eng:focus-visible ~ .about-team__labels label[for="about-role-eng"] {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

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

.page-about #about-role-edit:checked ~ .about-team__panels .about-team__panel[data-role="edit"],
.page-about #about-role-observe:checked ~ .about-team__panels .about-team__panel[data-role="observe"],
.page-about #about-role-viz:checked ~ .about-team__panels .about-team__panel[data-role="viz"],
.page-about #about-role-eng:checked ~ .about-team__panels .about-team__panel[data-role="eng"] {
  display: block;
}

.page-about .about-team__panel {
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  max-width: 68ch;
}

.page-about .about-team__panel h3 {
  margin: 0;
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--lime);
}

.page-about .about-team__panel p {
  margin: 0.75rem 0 0;
  line-height: 1.85;
  color: var(--about-muted);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  padding-block: clamp(2.75rem, 7vw, 5.5rem);
}

.page-about .about-eco__head {
  display: grid;
  gap: 1rem;
  max-width: 76ch;
}

.page-about .about-eco__intro {
  margin: 0;
  line-height: 1.8;
  color: var(--about-muted);
}

.page-about .about-eco__grid {
  list-style: none;
  margin: clamp(1.75rem, 4.5vw, 2.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  grid-template-columns: minmax(0, 1fr);
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-eco__card {
  position: relative;
  background: var(--ink);
  padding: clamp(1.35rem, 3.5vw, 1.9rem) clamp(1.1rem, 3vw, 1.6rem) clamp(1.5rem, 3.5vw, 2rem);
  overflow: hidden;
}

.page-about .about-eco__card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.34s ease;
}

.page-about .about-eco__card:hover::after {
  transform: scaleX(1);
}

.page-about .about-eco__num {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  font-family: var(--font-num);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-eco__num span {
  font-size: clamp(2.1rem, 6vw, 2.9rem);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .about-eco__num em {
  font-family: var(--font-cn);
  font-style: normal;
  font-size: 0.92rem;
  font-weight: 600;
  color: rgba(232, 242, 236, 0.66);
}

.page-about .about-eco__badge {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-about .about-eco__card h3 {
  margin: clamp(0.7rem, 2vw, 1rem) 0 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-eco__card p:last-child {
  margin: 0.6rem 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--about-muted);
}

.page-about .about-eco__card--plain {
  background: var(--console);
}

/* ---------- 内容资产 ---------- */
.page-about .about-assets {
  background: var(--console);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-assets__layout {
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
}

.page-about .about-assets__intro {
  margin: clamp(0.9rem, 2.5vw, 1.25rem) 0 0;
  max-width: 60ch;
  line-height: 1.85;
  color: var(--about-muted);
}

.page-about .about-assets__list {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
}

.page-about .about-assets__list li {
  background: var(--console);
  padding: clamp(0.95rem, 2.6vw, 1.35rem) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-assets__list li:first-child {
  border-top: none;
}

.page-about .about-assets__list h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.01em;
}

.page-about .about-assets__list p {
  margin: 0.55rem 0 0;
  max-width: 60ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--about-muted);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-about .about-cta__inner {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  padding: clamp(1.75rem, 5vw, 3rem);
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius-organic);
}

.page-about .about-cta__inner::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255, 107, 53, 0.32), rgba(255, 107, 53, 0) 72%);
  pointer-events: none;
}

.page-about .about-cta__text h2 {
  position: relative;
  margin: 0;
  font-size: clamp(1.45rem, 3.6vw, 2.25rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.025em;
}

.page-about .about-cta__text p {
  position: relative;
  margin: 0.9rem 0 0;
  max-width: 62ch;
  line-height: 1.85;
  color: rgba(11, 31, 22, 0.78);
}

.page-about .about-cta__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-cta .btn-ghost {
  color: var(--ink);
  border-color: rgba(11, 31, 22, 0.35);
}

.page-about .about-cta .btn-ghost:hover {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.page-about .about-cta__links a {
  font-size: 0.95rem;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-cta__links a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 700px) {
  .page-about .about-data__item {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: 1.5rem;
    align-items: start;
  }

  .page-about .about-data__idx {
    grid-row: 1 / span 2;
    padding-top: 0.35rem;
  }

  .page-about .about-data__item h3,
  .page-about .about-data__item p {
    grid-column: 2;
  }

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

@media (min-width: 900px) {
  .page-about .about-data__top {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) auto;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.72fr);
    align-items: end;
  }

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

  .page-about .about-line__figure {
    position: sticky;
    top: 6.5rem;
  }

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