.page-about {
  background: var(--ink);
  color: var(--ivory);
}

.page-about .about-crumb {
  padding-top: clamp(18px, 3.5vw, 34px);
}

/* ---------- 首屏自述 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 78px) 0 clamp(30px, 4vw, 52px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -22% -25% auto -25%;
  height: 150%;
  background:
    radial-gradient(56% 60% at 80% 10%, rgba(230, 0, 126, 0.16), transparent 62%),
    radial-gradient(50% 56% at 6% 86%, rgba(27, 77, 255, 0.13), transparent 66%),
    radial-gradient(70% 76% at 46% 0%, rgba(62, 90, 78, 0.45), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 56rem;
}

.page-about .about-hero__kicker {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .about-hero__kicker::before {
  content: "";
  display: inline-block;
  width: 34px;
  height: 1px;
  margin-right: 12px;
  vertical-align: middle;
  background: var(--gold);
}

.page-about .about-hero__title {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.6vw, 74px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--ivory);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 42rem;
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.9;
  color: rgba(244, 235, 220, 0.82);
}

/* ---------- 数据条 ---------- */

.page-about .about-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 14px;
  margin-top: clamp(34px, 5vw, 54px);
  padding: 24px 0;
  border-top: var(--rule);
  border-bottom: var(--rule);
}

.page-about .about-band .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .about-band .stat__num {
  display: flex;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-band .stat__unit {
  margin-left: 4px;
  font-size: 0.48em;
  letter-spacing: 0.08em;
  color: var(--gold-light);
}

.page-about .about-band .stat__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(244, 235, 220, 0.64);
}

/* ---------- 章节通用 ---------- */

.page-about .about-section {
  padding: clamp(52px, 8vw, 96px) 0;
}

.page-about .about-section--tight {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(40px, 6vw, 72px);
}

.page-about .about-lead {
  max-width: 42rem;
  margin: 0 0 clamp(28px, 4vw, 44px);
  font-size: clamp(16px, 1.8vw, 17.5px);
  line-height: 1.9;
  color: rgba(244, 235, 220, 0.8);
}

/* ---------- 01 品牌由来 ---------- */

.page-about .about-origin {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .about-origin__text p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(244, 235, 220, 0.78);
}

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

.page-about .about-audience {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--rule-soft);
}

.page-about .about-audience__item {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 18px 0;
  border-bottom: var(--rule-soft);
}

.page-about .about-audience__no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--magenta);
  padding-top: 3px;
}

.page-about .about-audience__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--gold-light);
}

.page-about .about-audience__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(244, 235, 220, 0.68);
}

/* ---------- 02 团队 ---------- */

.page-about .about-team__grid {
  display: grid;
  gap: 18px;
}

.page-about .team-card {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--panel);
  border: var(--rule);
  overflow: hidden;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 58px;
  height: 3px;
  background: var(--gold);
}

.page-about .team-card::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 90px;
  height: 90px;
  border: 1px solid rgba(212, 175, 55, 0.16);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .team-card--data::before {
  background: var(--cobalt);
}

.page-about .team-card--support::before {
  background: var(--magenta);
}

.page-about .team-card__ring {
  display: block;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border-radius: 50%;
  border: 2px solid rgba(212, 175, 55, 0.55);
  box-shadow: inset 0 0 0 7px rgba(212, 175, 55, 0.08), 0 0 20px rgba(212, 175, 55, 0.16);
}

.page-about .team-card--data .team-card__ring {
  border-color: rgba(27, 77, 255, 0.6);
  box-shadow: inset 0 0 0 7px rgba(27, 77, 255, 0.1), 0 0 20px rgba(27, 77, 255, 0.22);
}

.page-about .team-card--support .team-card__ring {
  border-color: rgba(230, 0, 126, 0.6);
  box-shadow: inset 0 0 0 7px rgba(230, 0, 126, 0.1), 0 0 20px rgba(230, 0, 126, 0.24);
}

.page-about .team-card__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.3vw, 22px);
  color: var(--ivory);
}

.page-about .team-card__count {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .team-card--data .team-card__count {
  color: #7C9BFF;
}

.page-about .team-card--support .team-card__count {
  color: #FF6FB4;
}

.page-about .team-card__duties {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .team-card__duties li {
  position: relative;
  padding-left: 17px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 235, 220, 0.74);
  transition: color 220ms var(--ease);
}

.page-about .team-card__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.page-about .team-card--data .team-card__duties li::before {
  border-color: var(--cobalt);
}

.page-about .team-card--support .team-card__duties li::before {
  border-color: var(--magenta);
}

@media (hover: hover) {
  .page-about .team-card:hover {
    transform: translateY(-6px);
    border-color: rgba(212, 175, 55, 0.6);
    box-shadow: var(--shadow-lift);
  }

  .page-about .team-card:hover .team-card__duties li {
    color: rgba(244, 235, 220, 0.95);
  }
}

/* ---------- 图片 ---------- */

.page-about .about-figure {
  margin: clamp(34px, 5vw, 56px) 0 0;
}

.page-about .about-archive {
  margin: 0;
}

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

/* ---------- 03 生产流程 ---------- */

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: none;
}

.page-about .flow-step {
  position: relative;
  padding: 24px 0 26px 0;
  border-top: 1px solid rgba(212, 175, 55, 0.32);
  transition: background 220ms var(--ease);
}

.page-about .flow-step:last-child {
  border-bottom: 1px solid rgba(212, 175, 55, 0.32);
}

.page-about .flow-step__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.06em;
  color: rgba(212, 175, 55, 0.42);
  transition: color 220ms var(--ease);
}

.page-about .flow-step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--gold-light);
}

.page-about .flow-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 235, 220, 0.75);
}

@media (hover: hover) {
  .page-about .flow-step:hover .flow-step__no {
    color: var(--magenta);
  }
}

.page-about .about-process__foot {
  margin: clamp(26px, 4vw, 40px) 0 0;
  max-width: 44rem;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 235, 220, 0.76);
}

.page-about .about-process__foot a,
.page-about .about-support__foot a {
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 175, 55, 0.45);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-process__foot a:hover,
.page-about .about-support__foot a:hover {
  color: var(--magenta);
  border-bottom-color: var(--magenta);
}

/* ---------- 留白引言 ---------- */

.page-about .about-pause {
  position: relative;
  padding: clamp(78px, 15vw, 168px) 0;
  text-align: center;
  background: linear-gradient(180deg, transparent, rgba(62, 90, 78, 0.2) 50%, transparent);
}

.page-about .about-pause__note {
  margin: 0 0 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--gold);
}

.page-about .about-pause__quote {
  margin: 0 auto;
  max-width: 20em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 4vw, 40px);
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

/* ---------- 04 赛季节奏 ---------- */

.page-about .season-list {
  border-top: var(--rule);
}

.page-about .season-phase {
  padding: 24px 0;
  border-bottom: var(--rule-soft);
}

.page-about .season-phase__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  color: var(--gold-light);
}

.page-about .season-phase__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 235, 220, 0.76);
}

.page-about .season-note {
  margin: clamp(26px, 4vw, 40px) 0 0;
  max-width: 44rem;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 235, 220, 0.72);
}

/* ---------- 05 发展历程 ---------- */

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 18px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(212, 175, 55, 0.55) 10%, rgba(212, 175, 55, 0.55) 90%, transparent);
}

.page-about .tl-item {
  position: relative;
  padding-left: 34px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 21px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--gold);
  background: var(--ink);
  transform: rotate(45deg);
}

.page-about .tl-item__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .tl-item__head::marker {
  content: "";
}

.page-about .tl-item__year {
  flex: none;
  min-width: 58px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .tl-item__title {
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--ivory);
}

.page-about .tl-item__mark {
  flex: none;
  width: 9px;
  height: 9px;
  margin-left: auto;
  border-right: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  transform: rotate(45deg);
  transform-origin: center;
  transition: transform 220ms var(--ease);
}

.page-about .tl-item details[open] .tl-item__mark {
  transform: rotate(225deg);
}

.page-about .tl-item__body {
  padding-bottom: 22px;
}

.page-about .tl-item__body p {
  margin: 0;
  max-width: 44rem;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 235, 220, 0.74);
}

/* ---------- 06 服务与支持 ---------- */

.page-about .about-support {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-support__text p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(244, 235, 220, 0.78);
}

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

.page-about .support-card {
  padding: 26px 22px 28px;
  background: var(--panel);
  border: var(--rule);
  position: relative;
  overflow: hidden;
}

.page-about .support-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 58px;
  height: 3px;
  background: var(--magenta);
}

.page-about .support-card__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .support-card__value {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.6vw, 22px);
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-about .support-card__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-about .support-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 235, 220, 0.72);
}

.page-about .support-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 5px;
  height: 5px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-about .about-support__foot {
  margin: clamp(30px, 4vw, 46px) 0 0;
  max-width: 52rem;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(244, 235, 220, 0.7);
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-about .about-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px 18px;
  }
}

@media (min-width: 760px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-audience__item {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .page-about .season-phase {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
    padding: 30px 0;
  }

  .page-about .season-phase__title {
    margin-bottom: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.32);
  }

  .page-about .flow-step {
    padding: 26px 22px 30px 0;
    border-top: 1px solid rgba(212, 175, 55, 0.32);
    border-bottom: none;
  }

  .page-about .flow-step:last-child {
    border-bottom: none;
  }

  .page-about .flow-step + .flow-step {
    padding-left: 26px;
  }

  .page-about .flow-step + .flow-step::before {
    content: "";
    position: absolute;
    left: 0;
    top: 38px;
    width: 16px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold));
  }

  .page-about .about-support {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-archive {
    max-width: 620px;
    margin: 0 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .team-card__duties li,
  .page-about .flow-step__no,
  .page-about .tl-item__mark {
    transition: none;
  }

  .page-about .team-card:hover {
    transform: none;
  }
}