.page-about {
  display: block;
  position: relative;
  background-color: var(--paper-50);
  background-image:
    linear-gradient(rgba(11, 21, 18, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 21, 18, 0.028) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px;
  color: var(--slate-700);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-crumbs {
  padding: 20px 0 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--slate-500);
}

.page-about .about-crumbs a {
  color: var(--moss-700);
  text-decoration: none;
}

.page-about .about-crumbs a:hover {
  color: var(--gold-500);
}

.page-about .about-crumbs__sep {
  margin: 0 8px;
  color: var(--moss-200);
}

.page-about .about-crumbs span[aria-current="page"] {
  color: var(--slate-700);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  display: grid;
  gap: 30px;
  padding: clamp(26px, 4vw, 50px) 0 clamp(44px, 6vw, 80px);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.05rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--ink-950);
  max-width: 15em;
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--slate-700);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .hero-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .hero-board__cell {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 108px;
  padding: 16px 16px 18px;
  background: var(--paper-200);
  border-left: 3px solid var(--moss-500);
  border-radius: var(--radius-card);
}

.page-about .hero-board__cell--main {
  grid-column: 1 / -1;
  min-height: 132px;
  background: var(--moss-700);
  border-left-color: var(--gold-500);
}

.page-about .hero-board__cell--gold {
  background: var(--gold-200);
  border-left-color: var(--gold-500);
}

.page-about .hero-board__fig {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4.2vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-950);
  font-variant-numeric: tabular-nums;
}

.page-about .hero-board__cell--main .hero-board__fig {
  color: var(--gold-500);
}

.page-about .hero-board__cap {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--slate-500);
}

.page-about .hero-board__cell--main .hero-board__cap {
  font-size: 13.5px;
  color: var(--moss-200);
}

/* ---------- 主体骨架 ---------- */

.page-about .about-deck {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .about-rail {
  position: relative;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 0 0 14px;
  margin-bottom: 14px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-rail::-webkit-scrollbar {
  display: none;
}

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

.page-about .about-rail__link {
  position: relative;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid var(--moss-200);
  border-radius: 999px;
  background: rgba(247, 242, 231, 0.7);
  font-size: 13px;
  color: var(--slate-500);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-about .about-rail__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--moss-500);
  transition: background 0.22s var(--ease);
}

.page-about .about-rail__link:hover {
  color: var(--ink-950);
  border-color: var(--gold-500);
}

.page-about .about-rail__link.is-current {
  color: var(--ink-950);
  border-color: var(--gold-500);
  background: var(--gold-200);
}

.page-about .about-rail__link.is-current .about-rail__dot {
  background: var(--gold-500);
}

.page-about .about-rail__link:focus-visible {
  outline: 3px solid var(--gold-500);
  outline-offset: 2px;
}

/* ---------- 画板通用 ---------- */

.page-about .about-panel {
  position: relative;
  margin: 0;
}

.page-about .about-panel + .about-panel {
  margin-top: clamp(38px, 5.6vw, 74px);
}

.page-about .about-panel + .about-panel::before {
  content: "";
  position: absolute;
  top: calc(-1 * clamp(19px, 2.8vw, 37px));
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gold-500);
  opacity: 0.42;
}

.page-about .panel__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 22px;
}

.page-about .panel__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gold-500);
  font-variant-numeric: tabular-nums;
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.6vw, 2.2rem);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.005em;
  color: var(--ink-950);
}

.page-about .prose {
  max-width: 38em;
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--slate-700);
}

.page-about .about-panel--ink {
  padding: clamp(28px, 4vw, 50px) clamp(20px, 3.2vw, 44px);
  background: var(--ink-950);
  border-radius: var(--radius-soft);
}

.page-about .about-panel--ink::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -18%;
  width: 260px;
  height: 260px;
  border-radius: var(--blob);
  background: radial-gradient(circle at 40% 40%, rgba(31, 107, 255, 0.22), transparent 68%);
  pointer-events: none;
}

.page-about .about-panel--ink .section-title {
  color: var(--paper-50);
}

.page-about .about-panel--ink .prose {
  color: var(--moss-200);
  margin-bottom: 32px;
}

.page-about .about-panel > * {
  position: relative;
  z-index: 1;
}

.page-about .about-panel--alt {
  padding: clamp(26px, 3.6vw, 46px) clamp(20px, 3.2vw, 44px);
  background: var(--paper-200);
  border-radius: var(--radius-soft);
}

/* ---------- 01 起点 ---------- */

.page-about .about-intro {
  margin-bottom: 30px;
}

.page-about .about-intro .prose {
  margin-bottom: 0;
}

.page-about .about-intro__note {
  padding: 20px 22px 22px;
  background: var(--moss-700);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--gold-500);
}

.page-about .about-intro__note-title {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold-200);
}

.page-about .about-intro__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .about-intro__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper-200);
}

.page-about .about-intro__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-500);
}

.page-about .year-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .year-flow__item {
  padding: 20px 20px 22px;
  background: var(--paper-200);
  border: 1px solid var(--moss-200);
  border-radius: var(--radius-card);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-about .year-flow__item:hover {
  transform: translateY(-2px);
  border-color: var(--gold-500);
  box-shadow: 0 12px 26px rgba(11, 21, 18, 0.08);
}

.page-about .year-flow__year {
  display: inline-block;
  padding: 3px 10px;
  background: var(--gold-200);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink-950);
  font-variant-numeric: tabular-nums;
}

.page-about .year-flow__title {
  margin: 13px 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-950);
}

.page-about .year-flow__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--slate-500);
}

/* ---------- 02 团队 ---------- */

.page-about .team-blocks {
  display: grid;
  gap: 14px;
  margin-bottom: 32px;
}

.page-about .team-block {
  padding: 22px 22px 24px;
  background: rgba(185, 207, 197, 0.07);
  border: 1px solid rgba(185, 207, 197, 0.24);
  border-radius: var(--radius-card);
  outline: none;
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-about .team-block:hover,
.page-about .team-block:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gold-500);
  background: rgba(200, 162, 43, 0.09);
}

.page-about .team-block:focus-visible {
  outline: 3px solid var(--gold-500);
  outline-offset: 2px;
}

.page-about .team-block__idx {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gold-500);
}

.page-about .team-block__name {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper-50);
}

.page-about .team-block__desc {
  margin: 0 0 15px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--moss-200);
}

.page-about .team-block__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-about .team-block__list li {
  position: relative;
  padding-left: 15px;
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(233, 225, 208, 0.8);
}

.page-about .team-block__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold-500);
}

.page-about .team-media {
  margin: 0;
}

.page-about .team-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 900;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1px solid rgba(200, 162, 43, 0.3);
}

.page-about .media__caption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--slate-500);
}

.page-about .about-panel--ink .media__caption,
.page-about .about-panel--place .media__caption {
  color: var(--moss-200);
}

/* ---------- 03 赛季 ---------- */

.page-about .season-track {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
}

.page-about .season-track__step {
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 30px;
}

.page-about .season-track__step:last-child {
  padding-bottom: 0;
}

.page-about .season-track__step::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 18px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--moss-500), var(--moss-200));
}

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

.page-about .season-track__node {
  position: relative;
  z-index: 1;
  width: 11px;
  height: 11px;
  margin: 5px 0 0 5px;
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 0 0 0 4px var(--paper-50);
}

.page-about .season-track__title {
  margin: 0 0 9px;
  font-size: clamp(1.05rem, 1.7vw, 1.22rem);
  font-weight: 800;
  line-height: 1.48;
  color: var(--ink-950);
}

.page-about .season-track__body p {
  max-width: 38em;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--slate-500);
}

/* ---------- 04 资产 ---------- */

.page-about .asset-layout {
  display: grid;
  gap: 26px;
}

.page-about .asset-grid {
  display: grid;
  gap: 14px;
}

.page-about .asset-card {
  display: flex;
  flex-direction: column;
  padding: 20px 22px 22px;
  background: var(--paper-200);
  border-left: 3px solid var(--moss-500);
  border-radius: var(--radius-card);
}

.page-about .asset-card__name {
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--slate-500);
}

.page-about .asset-card__fig {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.2vw, 2.05rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--moss-700);
  font-variant-numeric: tabular-nums;
}

.page-about .asset-card__fig small {
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--slate-500);
  white-space: nowrap;
}

.page-about .asset-card__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--slate-500);
}

.page-about .asset-bar {
  display: block;
  height: 4px;
  margin-top: 16px;
  border-radius: 999px;
  background: var(--moss-200);
  overflow: hidden;
}

.page-about .asset-bar > span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--moss-500), var(--gold-500));
}

.page-about .asset-card:nth-child(1) .asset-bar > span { width: 84%; }
.page-about .asset-card:nth-child(2) .asset-bar > span { width: 66%; }
.page-about .asset-card:nth-child(3) .asset-bar > span { width: 94%; }
.page-about .asset-card:nth-child(4) .asset-bar > span { width: 58%; }

.page-about .asset-media {
  margin: 0;
}

.page-about .asset-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 750;
  object-fit: cover;
  border-radius: var(--radius-card);
}

/* ---------- 05 伙伴 ---------- */

.page-about .partner-wall {
  border-top: 1px solid var(--moss-200);
}

.page-about .partner-wall__item {
  display: grid;
  gap: 4px 22px;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--moss-200);
  transition: background 0.24s var(--ease);
}

.page-about .partner-wall__item:hover {
  background: rgba(200, 162, 43, 0.07);
}

.page-about .partner-wall__num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--moss-700);
  font-variant-numeric: tabular-nums;
}

.page-about .partner-wall__name {
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-950);
}

.page-about .partner-wall__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--slate-500);
  transition: color 0.24s var(--ease);
}

.page-about .partner-wall__item:hover .partner-wall__note {
  color: var(--slate-700);
}

.page-about .partner-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 06 宁夏 ---------- */

.page-about .about-panel--place {
  overflow: hidden;
}

.page-about .about-panel--place .prose {
  margin-bottom: 26px;
  max-width: 34em;
}

.page-about .place-layout {
  display: grid;
  gap: 28px;
}

.page-about .place-contact {
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .place-contact > div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid rgba(185, 207, 197, 0.2);
}

.page-about .place-contact > div:first-child {
  border-top: 1px solid rgba(185, 207, 197, 0.2);
}

.page-about .place-contact dt {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--moss-200);
}

.page-about .place-contact dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper-50);
  overflow-wrap: anywhere;
}

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

.page-about .place-icp {
  margin: 24px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--slate-500);
}

.page-about .place-media {
  margin: 0;
}

.page-about .place-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 800;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1px solid rgba(200, 162, 43, 0.28);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .year-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-about .partner-wall__item {
    grid-template-columns: 74px 190px minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 52px;
  }

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

  .page-about .about-deck {
    display: grid;
    grid-template-columns: 142px minmax(0, 1fr);
    gap: clamp(22px, 3.6vw, 54px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 96px;
    display: block;
    overflow: visible;
    padding: 4px 0 0;
    margin: 0;
  }

  .page-about .about-rail__spine {
    display: block;
    position: absolute;
    left: 5px;
    top: 18px;
    bottom: 18px;
    width: 1px;
    background: linear-gradient(180deg, var(--gold-500), var(--moss-200));
  }

  .page-about .about-rail__link {
    display: flex;
    width: 100%;
    padding: 10px 0 10px 24px;
    border: 0;
    border-radius: 0;
    background: none;
    font-size: 13.5px;
    letter-spacing: 0.03em;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link.is-current {
    background: none;
    color: var(--ink-950);
    font-weight: 700;
  }

  .page-about .about-rail__dot {
    position: absolute;
    left: 2px;
    top: 50%;
    margin-top: -3.5px;
    background: var(--moss-200);
  }

  .page-about .about-rail__link:hover .about-rail__dot,
  .page-about .about-rail__link.is-current .about-rail__dot {
    background: var(--gold-500);
  }

  .page-about .team-blocks {
    grid-template-columns: 1.15fr 1fr 0.95fr;
    gap: 18px;
  }

  .page-about .asset-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

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

  .page-about .asset-media {
    position: sticky;
    top: 96px;
  }

  .page-about .place-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 46px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .year-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .year-flow__item,
  .page-about .team-block,
  .page-about .about-rail__link,
  .page-about .partner-wall__item,
  .page-about .partner-wall__note {
    transition: none;
  }

  .page-about .year-flow__item:hover,
  .page-about .team-block:hover {
    transform: none;
  }
}