.page-about {
  --about-gap: clamp(18px, 2.6vw, 34px);
  --about-pad: clamp(18px, 3vw, 30px);
  --about-line: 1px solid var(--line-green);
  display: block;
  color: var(--chalk-white);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  background:
    radial-gradient(110% 55% at 82% -8%, rgba(79, 227, 193, 0.08), transparent 62%),
    radial-gradient(80% 50% at 0% 42%, rgba(139, 108, 255, 0.06), transparent 60%),
    var(--ink-night);
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fluor-cyan);
  margin: 0;
}

.page-about .about-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, var(--fs-2xl));
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--chalk-white);
  margin: 10px 0 0;
  padding-bottom: 16px;
  position: relative;
}

.page-about .about-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, var(--fluor-cyan), var(--ember-orange));
  transform: skewX(-14deg);
}

.page-about .lede {
  font-size: var(--fs-lg);
  line-height: 1.7;
  color: var(--fog-gray);
  max-width: 42em;
  margin: 18px 0 0;
}

.page-about .section {
  padding-block: clamp(42px, 7vw, 88px);
}

.page-about .about-head {
  margin-bottom: clamp(22px, 3.4vw, 40px);
  max-width: 46em;
}

.page-about .about-head--flush {
  margin-bottom: 18px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(20px, 3.6vw, 44px);
}

.page-about .about-hero__inner {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
  margin-top: clamp(18px, 3vw, 32px);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(29px, 6.6vw, var(--fs-3xl));
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--chalk-white);
  margin: 12px 0 0;
}

.page-about .about-hero h1::after {
  content: "";
  display: block;
  width: 96px;
  height: 4px;
  margin-top: 20px;
  background: linear-gradient(90deg, var(--fluor-cyan), var(--ember-orange));
  transform: skewX(-14deg);
}

.page-about .about-hero__copy .lede {
  font-size: var(--fs-body);
  line-height: 1.8;
  max-width: 40em;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  background: var(--line-green);
  border: var(--about-line);
}

.page-about .about-facts > div {
  background: var(--stand-green);
  padding: 14px 15px 16px;
}

.page-about .about-facts dt {
  font-size: var(--fs-meta);
  letter-spacing: 0.08em;
  color: var(--fog-gray);
}

.page-about .about-facts dd {
  margin: 6px 0 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .about-facts__n {
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, var(--fs-2xl));
  line-height: 1;
  color: var(--fluor-cyan);
}

.page-about .about-facts__u {
  font-size: var(--fs-sm);
  color: var(--fog-gray);
}

.page-about .about-hero__figure {
  border: var(--about-line);
  background: var(--stand-green);
  padding: 8px;
}

.page-about .about-hero__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.92) contrast(1.04);
}

/* ---------- 四个入口 ---------- */
.page-about .about-doors {
  display: grid;
  gap: 1px;
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--line-green);
  border: var(--about-line);
}

.page-about .about-door {
  background: var(--stand-green);
  padding: 22px 18px 24px;
  position: relative;
  transition: background-color 0.3s var(--ease);
}

.page-about .about-door__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--volt-purple);
  letter-spacing: 0.1em;
}

.page-about .about-door__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: 1.35;
  margin: 8px 0 10px;
  color: var(--chalk-white);
}

.page-about .about-door p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--fog-gray);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-about .about-team__intro p {
  margin: 0 0 16px;
  color: var(--fog-gray);
  max-width: 40em;
}

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

.page-about .about-team__figure {
  border: var(--about-line);
  background: var(--stand-green);
  padding: 8px;
}

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

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

.page-about .about-team__card {
  position: relative;
  background: var(--stand-green);
  border: 1px solid var(--line-green);
  padding: 22px 20px 24px;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-team__card::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px dashed transparent;
  pointer-events: none;
  transition: border-color 0.3s var(--ease);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  border-color: var(--fluor-cyan);
  transform: translateY(-3px);
}

.page-about .about-team__card:hover::before,
.page-about .about-team__card:focus-within::before {
  border-color: rgba(79, 227, 193, 0.4);
}

.page-about .about-team__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--ember-orange);
  letter-spacing: 0.06em;
}

.page-about .about-team__count .data-num {
  font-size: var(--fs-xl);
  vertical-align: -2px;
}

.page-about .about-team__role {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  margin: 6px 0 12px;
  color: var(--chalk-white);
}

.page-about .about-team__duties {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-team__duties li {
  font-size: var(--fs-sm);
  line-height: 1.65;
  color: var(--fog-gray);
  padding-left: 16px;
  position: relative;
}

.page-about .about-team__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--fluor-cyan);
  transform: skewX(-14deg);
}

/* ---------- 球队库 ---------- */
.page-about .about-grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-grid__main p {
  color: var(--fog-gray);
  max-width: 40em;
  margin: 0 0 16px;
}

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

.page-about .about-panel {
  border: var(--about-line);
  background: var(--stand-green);
  padding: 20px 18px 22px;
}

.page-about .about-panel__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  margin: 0 0 14px;
  color: var(--chalk-white);
}

.page-about .about-panel__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-green);
}

.page-about .about-panel__list li {
  background: var(--stand-green);
  padding: 10px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  align-items: baseline;
  justify-content: space-between;
}

.page-about .about-panel__k {
  font-size: var(--fs-sm);
  color: var(--chalk-white);
}

.page-about .about-panel__v {
  font-size: var(--fs-meta);
  color: var(--fog-gray);
}

/* ---------- 赛季刻度时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: repeating-linear-gradient(to bottom, var(--line-green) 0 7px, transparent 7px 14px);
}

.page-about .about-season {
  position: relative;
  border-bottom: var(--about-line);
}

.page-about .about-season::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 20px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-night);
  border: 2px solid var(--fluor-cyan);
  box-shadow: 0 0 0 4px rgba(79, 227, 193, 0.12);
}

.page-about .about-season details > summary {
  cursor: pointer;
}

.page-about .about-season__trigger {
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 0;
  transition: color 0.25s var(--ease);
}

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

.page-about .about-season__trigger:hover {
  color: var(--fluor-cyan);
}

.page-about .about-season__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--volt-purple);
  flex: none;
}

.page-about .about-season__name {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: 1.4;
  color: inherit;
  flex: 1 1 auto;
}

.page-about .about-season__sign {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-lg);
  color: var(--fluor-cyan);
  transition: transform 0.3s var(--ease);
}

.page-about .about-season details[open] .about-season__sign {
  transform: rotate(45deg);
}

.page-about .about-season__panel {
  padding: 0 0 20px;
  max-width: 40em;
}

.page-about .about-season__panel p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--fog-gray);
}

/* ---------- 覆盖版图 ---------- */
.page-about .about-map {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-map__figure {
  border: var(--about-line);
  background: var(--stand-green);
  padding: 20px 18px;
}

.page-about .about-map__dots {
  width: 100%;
  height: auto;
  display: block;
  max-width: 320px;
  margin: 0 auto;
}

.page-about .about-map__dot--on {
  fill: var(--fluor-cyan);
  opacity: 0.88;
}

.page-about .about-map__dot--off {
  fill: var(--line-green);
}

.page-about .about-map__legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 18px 0 0;
  font-size: var(--fs-meta);
  color: var(--fog-gray);
}

.page-about .about-map__key {
  width: 10px;
  height: 10px;
  display: inline-block;
  border-radius: 50%;
  flex: none;
}

.page-about .about-map__key--on {
  background: var(--fluor-cyan);
}

.page-about .about-map__key--off {
  background: var(--line-green);
  margin-left: 12px;
}

.page-about .about-map__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-green);
  border: var(--about-line);
}

.page-about .about-map__list li {
  background: var(--stand-green);
  padding: 16px 18px 18px;
}

.page-about .about-map__list h3 {
  font-family: var(--font-display);
  font-size: var(--fs-body);
  margin: 0 0 6px;
  color: var(--chalk-white);
}

.page-about .about-map__list p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--fog-gray);
}

.page-about .about-map__photo {
  margin-top: var(--about-gap);
  border: var(--about-line);
  background: var(--stand-green);
  padding: 8px;
}

.page-about .about-map__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- 登记与合辑 ---------- */
.page-about .about-credits {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-credits__text p {
  margin: 0 0 16px;
  color: var(--fog-gray);
  max-width: 40em;
}

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

.page-about .about-quote {
  margin: 0;
  background: var(--paper-ash);
  color: var(--pitch-black);
  padding: clamp(22px, 4vw, 36px);
  font-family: var(--font-display);
  font-size: clamp(17px, 2.4vw, var(--fs-lg));
  line-height: 1.65;
  border-left: 4px solid var(--ember-orange);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-green);
  border: var(--about-line);
}

.page-about .about-next__link {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--stand-green);
  padding: 18px 18px 20px;
  text-decoration: none;
  color: inherit;
  transition: background-color 0.3s var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: #143528;
}

.page-about .about-next__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--volt-purple);
  flex: none;
  padding-top: 3px;
}

.page-about .about-next__body {
  display: grid;
  gap: 4px;
}

.page-about .about-next__t {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--chalk-white);
}

.page-about .about-next__d {
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--fog-gray);
}

.page-about .about-next__link:hover .about-next__t,
.page-about .about-next__link:focus-visible .about-next__t {
  color: var(--fluor-cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-doors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 3.4vw, 48px);
  }

  .page-about .about-hero__figure {
    margin-top: 8px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 3.4vw, 48px);
  }

  .page-about .about-grid--wide {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 3.4vw, 48px);
  }

  .page-about .about-map {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(24px, 3.4vw, 48px);
  }

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

  .page-about .about-credits {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 3.4vw, 48px);
  }

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

  .page-about .about-next li:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1180px) {
  .page-about .about-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-next li:last-child {
    grid-column: auto;
  }
}

@media (max-width: 480px) {
  .page-about .about-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-season__name {
    font-size: var(--fs-body);
  }

  .page-about .about-next__link {
    flex-direction: column;
    gap: 6px;
  }
}
</main>