.page-about {
  --about-line: rgba(31, 78, 112, 0.5);
  --about-line-soft: rgba(31, 78, 112, 0.32);
  --about-card: rgba(8, 34, 56, 0.72);
  --about-glow: rgba(34, 227, 211, 0.16);
  --about-muted: rgba(243, 248, 251, 0.74);
  background: var(--abyss-900);
  color: var(--ice);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(6.5rem, 15vw, 10.5rem) 0 clamp(2.75rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-hero__img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  opacity: 0.5;
}

.page-about .about-hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 75% at 16% 4%, var(--about-glow), transparent 62%),
    linear-gradient(180deg, rgba(4, 18, 31, 0.6) 0%, rgba(4, 18, 31, 0.88) 58%, var(--abyss-900) 100%);
}

.page-about .about-hero__inner {
  max-width: 60rem;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(1.5rem, 4vw, 2.4rem);
}

.page-about .about-hero h1 {
  margin: 0.85rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 7.5vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.page-about .about-hero__accent {
  display: block;
  color: var(--sonar);
}

.page-about .about-hero .lede {
  margin: 1.3rem 0 0;
  max-width: 44rem;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.9;
  color: var(--about-muted);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
  margin-top: clamp(2rem, 5vw, 3rem);
  padding-top: 1.4rem;
  border-top: 1px dashed var(--about-line);
}

.page-about .about-stat {
  display: grid;
  gap: 0.2rem;
  min-width: 0;
}

.page-about .about-stat__value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.7rem, 4.4vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--pulse);
}

.page-about .about-stat .stat__unit {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--sonar);
}

.page-about .about-stat .stat__label {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 起点 ---------- */
.page-about .about-intro__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.page-about .about-intro__body p {
  margin: 0 0 1.1rem;
  line-height: 1.85;
  color: var(--about-muted);
}

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

/* ---------- 时间轴 ---------- */
.page-about .about-history__head {
  max-width: 46rem;
}

.page-about .about-history__head .lede {
  margin-top: 1rem;
  color: var(--about-muted);
  line-height: 1.85;
}

.page-about .about-track {
  position: relative;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  padding-left: 2.5rem;
}

.page-about .about-track::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 1px;
  background: linear-gradient(180deg, var(--sonar) 0%, rgba(34, 227, 211, 0.28) 65%, rgba(34, 227, 211, 0) 100%);
}

.page-about .about-node__trigger {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "head icon"
    "title icon";
  align-items: start;
  gap: 0.45rem 1.25rem;
  width: 100%;
  padding: 1.35rem 0 1.45rem;
  background: none;
  border: 0;
  border-top: 1px solid var(--about-line-soft);
  color: inherit;
  text-align: left;
  font: inherit;
  cursor: pointer;
  transition: border-color 0.3s var(--ease);
}

.page-about .about-node:first-child .about-node__trigger {
  border-top: 0;
  padding-top: 0.5rem;
}

.page-about .about-node__trigger:hover,
.page-about .about-node__trigger:focus-visible {
  border-top-color: var(--sonar);
}

.page-about .about-node__dot {
  position: absolute;
  top: 1.6rem;
  left: calc(-1.5rem - 5px);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--sonar);
  box-shadow: 0 0 0 5px rgba(34, 227, 211, 0.12);
}

.page-about .about-node:first-child .about-node__dot {
  top: 0.75rem;
}

.page-about .about-node__head {
  grid-area: head;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 0.9rem;
}

.page-about .about-node__index {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--sonar);
  transition: color 0.25s var(--ease);
}

.page-about .about-node__season {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--steel);
}

.page-about .about-node__title {
  grid-area: title;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: clamp(1.1rem, 2.6vw, 1.5rem);
  line-height: 1.45;
  color: var(--ice);
}

.page-about .about-node:hover .about-node__index {
  color: var(--pulse);
}

.page-about .about-node__icon {
  grid-area: icon;
  align-self: center;
  position: relative;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  border: 1px solid var(--about-line);
  flex: none;
}

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

.page-about .about-node__icon::before {
  width: 10px;
  height: 1px;
}

.page-about .about-node__icon::after {
  width: 1px;
  height: 10px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.page-about .about-node__trigger[aria-expanded="true"] .about-node__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-about .about-node__trigger[aria-expanded="true"] .about-node__title {
  color: var(--sonar-soft);
}

.page-about .about-node__panel .accordion__panel-inner {
  max-width: 44rem;
  padding: 0 0 1.5rem;
  border-left: 2px solid rgba(34, 227, 211, 0.4);
  padding-left: 1rem;
}

.page-about .about-node__panel .accordion__panel-inner p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--about-muted);
}

/* ---------- 斜向分割 ---------- */
.page-about .about-slant {
  position: relative;
  height: clamp(3rem, 9vw, 6.5rem);
  margin: clamp(1.5rem, 5vw, 3rem) 0;
  overflow: hidden;
}

.page-about .about-slant::before {
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--sonar) 35%, var(--pulse) 78%, transparent 100%);
  transform: rotate(-6deg);
  opacity: 0.85;
}

.page-about .about-slant::after {
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  top: calc(50% + 10px);
  height: 1px;
  background: var(--about-line-soft);
  transform: rotate(-6deg);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.page-about .about-team__media {
  margin: 0;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--tide-700);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.page-about .about-team__media figcaption {
  margin: 0.85rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-team__body p {
  margin: 1rem 0 0;
  line-height: 1.85;
  color: var(--about-muted);
}

.page-about .about-roles {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-about .about-roles__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px dashed var(--about-line-soft);
}

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

.page-about .about-roles__num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1;
  color: var(--pulse);
}

.page-about .about-roles__body {
  display: grid;
  gap: 0.3rem;
}

.page-about .about-roles__body strong {
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--ice);
}

.page-about .about-roles__body span {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--about-muted);
}

/* ---------- 赛区 ---------- */
.page-about .about-zones__head {
  max-width: 46rem;
}

.page-about .about-zones__head .lede {
  margin-top: 1rem;
  color: var(--about-muted);
  line-height: 1.85;
}

.page-about .about-zones__flow {
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(1.5rem, 4vw, 2.25rem);
  padding: clamp(1rem, 3vw, 1.75rem);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 130% at 12% 0%, rgba(34, 227, 211, 0.12), transparent 60%),
    var(--abyss-800);
  box-shadow: inset 0 1px 0 rgba(143, 245, 235, 0.14);
}

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

.page-about .about-flow__path {
  fill: none;
  stroke: url(#aboutFlowGrad);
  stroke-width: 2;
  stroke-dasharray: 9 11;
  stroke-linecap: round;
}

.page-about .about-flow__halo {
  fill: rgba(34, 227, 211, 0.1);
  stroke: rgba(34, 227, 211, 0.4);
  stroke-width: 1;
  transition: fill 0.25s var(--ease);
}

.page-about .about-flow__dot {
  fill: var(--sonar);
  transition: fill 0.25s var(--ease);
}

.page-about .about-flow__label {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-anchor: middle;
  fill: var(--steel);
  transition: fill 0.25s var(--ease);
}

.page-about .about-flow__node:hover .about-flow__dot {
  fill: var(--pulse);
}

.page-about .about-flow__node:hover .about-flow__halo {
  fill: rgba(255, 122, 47, 0.16);
}

.page-about .about-flow__node:hover .about-flow__label {
  fill: var(--pulse);
}

.page-about .about-zones__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 1.75rem);
}

.page-about .about-zones__card {
  position: relative;
  padding: 1.35rem 0 0;
  border-top: 2px solid var(--sonar);
}

.page-about .about-zones__card:nth-child(2) {
  border-top-color: var(--pulse);
}

.page-about .about-zones__card:nth-child(3) {
  border-top-color: var(--blueprint);
}

.page-about .about-zones__card-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--ice);
}

.page-about .about-zones__card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--about-muted);
}

/* ---------- 归档 ---------- */
.page-about .about-archive__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.page-about .about-archive__body p {
  margin: 1rem 0 0;
  line-height: 1.85;
  color: var(--about-muted);
}

.page-about .about-archive__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.4rem 0 1.75rem;
  padding: 0;
}

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

.page-about .about-archive__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px rgba(4, 18, 31, 0.55);
}

.page-about .about-archive__media figcaption {
  margin: 0.85rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 湖北 ---------- */
.page-about .about-local__panel {
  position: relative;
  padding: clamp(1.75rem, 5vw, 3.25rem);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(85% 120% at 88% 0%, rgba(255, 122, 47, 0.16), transparent 62%),
    linear-gradient(140deg, var(--tide-700) 0%, var(--abyss-800) 65%);
  border: 1px solid var(--about-line);
  overflow: hidden;
}

.page-about .about-local__panel::after {
  content: "";
  position: absolute;
  right: -3rem;
  bottom: -4rem;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  border: 1px solid rgba(34, 227, 211, 0.22);
  pointer-events: none;
}

.page-about .about-local__body {
  max-width: 44rem;
  margin-top: 1rem;
}

.page-about .about-local__body p {
  margin: 0 0 1rem;
  line-height: 1.85;
  color: var(--about-muted);
}

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

.page-about .about-local__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* ---------- 接下来 ---------- */
.page-about .about-next__title {
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
}

.page-about .about-next__list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-next__item {
  border-top: 1px solid var(--about-line-soft);
}

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

.page-about .about-next__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.9rem;
  padding: 1.1rem 0.25rem;
  text-decoration: none;
  color: var(--ice);
  transition: background 0.3s var(--ease), padding-left 0.3s var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: rgba(34, 227, 211, 0.06);
  padding-left: 0.75rem;
}

.page-about .about-next__num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--sonar);
}

.page-about .about-next__label {
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-about .about-next__arrow {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--pulse);
  transition: transform 0.3s var(--ease);
}

.page-about .about-next__link:hover .about-next__arrow {
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */
@media (max-width: 560px) {
  .page-about .about-hero__stats {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .page-about .about-stat {
    grid-template-columns: auto auto minmax(0, 1fr);
    align-items: baseline;
    gap: 0.5rem;
  }

  .page-about .about-track {
    padding-left: 1.75rem;
  }

  .page-about .about-track::before {
    left: 0.5rem;
  }

  .page-about .about-node__dot {
    top: 1.5rem;
    left: calc(-1.25rem - 5px);
  }

  .page-about .about-node:first-child .about-node__dot {
    top: 0.7rem;
  }
}

@media (min-width: 780px) {
  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
    gap: 3rem;
  }

  .page-about .about-zones__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }
}

@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 3.5rem;
  }

  .page-about .about-archive__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 3.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node__trigger,
  .page-about .about-node__icon::after,
  .page-about .about-flow__halo,
  .page-about .about-flow__dot,
  .page-about .about-flow__label,
  .page-about .about-next__link,
  .page-about .about-next__arrow {
    transition: none;
  }
}