.page-about {
  --about-text: rgba(244, 241, 255, .86);
  --about-rule: rgba(244, 241, 255, .14);
  --about-rule-strong: rgba(244, 241, 255, .3);
  --about-rail-lead: 30px;
}

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

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: clamp(18px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .breadcrumbs__item {
  display: inline-flex;
  align-items: center;
}

.page-about .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--line-strong);
}

.page-about .breadcrumbs a {
  color: var(--volt);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--pulse);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-bottom: clamp(40px, 7vw, 96px);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(18px, 2.6vw, 30px);
  padding-top: clamp(18px, 3vw, 34px);
}

.page-about .about-hero__eyebrow {
  color: var(--gold);
  letter-spacing: .18em;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 11vw, 118px);
  line-height: .96;
  letter-spacing: -.025em;
  color: var(--paper);
  text-shadow:
    2px 2px 0 rgba(122, 59, 255, .6),
    -2px -1px 0 rgba(34, 211, 255, .28);
}

.page-about .about-hero__lede {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--about-text);
  max-width: 62ch;
}

.page-about .about-facts {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-facts dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-about .about-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--gold);
}

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

/* ---------- 通用版式 ---------- */

.page-about .about-block {
  padding: clamp(48px, 8vw, 108px) 0;
}

.page-about .about-spread {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-rail {
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-about .about-rail__index {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
  text-shadow: 0 0 20px rgba(122, 59, 255, .55);
}

.page-about .about-rail__kicker {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--paper);
}

.page-about .about-rail__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-body {
  min-width: 0;
}

.page-about .about-body__title {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-body p {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--about-text);
}

/* ---------- 引文块：纸张叠层 ---------- */

.page-about .about-quote {
  position: relative;
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: clamp(22px, 3vw, 34px) clamp(20px, 3vw, 36px);
  background: var(--ink-3);
  border: 1px solid var(--about-rule-strong);
  border-left: 3px solid var(--neon);
  box-shadow:
    8px 8px 0 rgba(20, 14, 36, .95),
    16px 16px 0 rgba(11, 8, 19, .75);
}

.page-about .about-quote p {
  margin: 0;
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.7;
  font-weight: 600;
  color: var(--paper);
}

/* ---------- 阶段时间线 ---------- */

.page-about .phase-rail {
  position: relative;
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0 0 0 var(--about-rail-lead);
}

.page-about .phase-rail::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--volt), var(--gold) 55%, var(--pulse));
  opacity: .55;
}

.page-about .phase-rail__item {
  position: relative;
}

.page-about .phase-rail__item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 24px;
  width: 10px;
  height: 10px;
  background: var(--ink);
  border: 2px solid var(--volt);
  transform: rotate(45deg);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .phase-rail__item:nth-child(2)::before {
  border-color: var(--gold);
  border-radius: 50%;
  transform: none;
}

.page-about .phase-rail__item:nth-child(3)::before {
  border-color: var(--pulse);
  border-radius: 0;
  transform: none;
}

.page-about .phase-rail__item:nth-child(4)::before {
  border-color: var(--mint);
  border-radius: 2px 50% 50% 50%;
  transform: rotate(45deg);
}

.page-about .phase-rail__item:hover::before,
.page-about .phase-rail__item:focus-within::before {
  background: var(--neon);
}

.page-about .phase {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .phase__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .phase__summary:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 3px;
}

.page-about .phase__index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-about .phase__name {
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .phase__meta {
  font-size: 13px;
  color: var(--muted);
}

.page-about .phase__text {
  margin: 0 0 18px;
  padding-right: clamp(0px, 2vw, 24px);
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .phase[open] .phase__name {
  color: var(--gold);
}

/* ---------- 三件事 ---------- */

.page-about .practices {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .practices__item {
  position: relative;
  padding-top: clamp(28px, 3vw, 36px);
}

.page-about .practices__item .card__title {
  margin: 0 0 12px;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.3;
}

.page-about .practices__item .card__text {
  margin: 0 0 14px;
  line-height: 1.8;
}

/* ---------- 评议组 ---------- */

.page-about .review-list {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .review-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px clamp(14px, 2vw, 20px);
  background: rgba(11, 8, 19, .5);
  border: 1px solid var(--about-rule);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .review-list__item:hover,
.page-about .review-list__item:focus-within {
  border-color: rgba(122, 59, 255, .7);
  background: rgba(36, 26, 61, .6);
}

.page-about .review-list__item p {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.8;
  color: var(--about-text);
}

.page-about .about-review__media {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

/* ---------- 赛季（全页霓虹强锚点） ---------- */

.page-about .about-season {
  padding: clamp(40px, 6vw, 80px) 0;
}

.page-about .about-season__panel {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 64px) clamp(20px, 4vw, 56px);
  background:
    linear-gradient(155deg, rgba(122, 59, 255, .32), rgba(20, 14, 36, .97) 48%, rgba(11, 8, 19, .99));
  border: 1px solid rgba(122, 59, 255, .55);
  box-shadow:
    0 0 0 1px rgba(122, 59, 255, .12),
    0 34px 90px rgba(122, 59, 255, .2);
}

.page-about .about-season__panel::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(244, 241, 255, .055) 0 1px, transparent 1px 5px);
}

.page-about .about-season__title {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.12;
  color: var(--paper);
}

.page-about .about-season__lede {
  margin: 0 0 clamp(24px, 3vw, 36px);
  max-width: 66ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(244, 241, 255, .84);
}

.page-about .season-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(244, 241, 255, .16);
  border: 1px solid rgba(244, 241, 255, .16);
}

.page-about .season-grid__item {
  padding: clamp(16px, 2.2vw, 26px);
  background: rgba(11, 8, 19, .76);
  transition: background-color 180ms var(--ease);
}

.page-about .season-grid__item:hover,
.page-about .season-grid__item:focus-within {
  background: rgba(36, 26, 61, .82);
}

.page-about .season-grid__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  color: var(--gold);
}

.page-about .season-grid__weeks {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--volt);
}

.page-about .season-grid__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-season__foot {
  position: relative;
  z-index: 1;
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-season__foot a {
  color: var(--volt);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 255, .45);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-season__foot a:hover,
.page-about .about-season__foot a:focus-visible {
  color: var(--pulse);
  border-color: var(--pulse);
}

/* ---------- 团队 ---------- */

.page-about .team-roster {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .team-roster__item {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .team-roster__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin: 0 0 10px;
}

.page-about .team-roster__name {
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .team-roster__count {
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.7vw, 18px);
  font-weight: 600;
  color: var(--gold);
}

.page-about .team-roster__meter {
  display: block;
  height: 8px;
  background: rgba(244, 241, 255, .08);
  border: 1px solid var(--about-rule);
  overflow: hidden;
}

.page-about .team-roster__meter i {
  display: block;
  height: 100%;
  width: 0;
  transition: width 700ms var(--ease);
}

.page-about .team-roster__item--rules .team-roster__meter i {
  width: 28.9%;
  background: linear-gradient(90deg, var(--neon), var(--volt));
}

.page-about .team-roster__item--tech .team-roster__meter i {
  width: 39.5%;
  background: linear-gradient(90deg, var(--volt), var(--mint));
}

.page-about .team-roster__item--support .team-roster__meter i {
  width: 31.6%;
  background: linear-gradient(90deg, var(--gold), var(--pulse));
}

.page-about .team-roster__item:hover .team-roster__meter,
.page-about .team-roster__item:focus-within .team-roster__meter {
  border-color: rgba(122, 59, 255, .75);
}

.page-about .team-roster__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-team__media {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

/* ---------- 合作生态 ---------- */

.page-about .partner-wall {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-honor {
  margin-top: clamp(26px, 4vw, 40px);
  padding: clamp(20px, 3vw, 30px) clamp(18px, 3vw, 32px);
  background: rgba(11, 8, 19, .62);
  border: 1px solid var(--about-rule);
  border-top: 2px solid var(--gold);
}

.page-about .about-honor__value {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .about-honor__text {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.8;
  color: var(--about-text);
}

/* ---------- 下一步 ---------- */

.page-about .next-list {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-rule);
}

.page-about .next-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(14px, 2vw, 24px);
  align-items: start;
  padding: clamp(18px, 2.6vw, 28px) clamp(14px, 2vw, 24px);
  background: var(--ink-2);
  transition: background-color 180ms var(--ease);
}

.page-about .next-list__item:hover,
.page-about .next-list__item:focus-within {
  background: var(--ink-3);
}

.page-about .next-list__num {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--neon);
}

.page-about .next-list__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .next-list__item p {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 收束 ---------- */

.page-about .about-cta {
  padding: clamp(44px, 7vw, 88px) 0 clamp(56px, 8vw, 104px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

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

.page-about .about-cta__actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 进场动效 ---------- */

.js .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
}

.js .page-about [data-reveal].is-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 620ms var(--ease), transform 620ms var(--ease);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-hero__inner {
    grid-template-columns: repeat(12, 1fr);
    column-gap: var(--gap);
    row-gap: clamp(20px, 2.6vw, 34px);
  }

  .page-about .about-hero__eyebrow {
    grid-column: 1 / 7;
    grid-row: 1;
  }

  .page-about .about-hero__title {
    grid-column: 1 / 12;
    grid-row: 2;
  }

  .page-about .about-hero__lede {
    grid-column: 4 / 11;
    grid-row: 3;
  }

  .page-about .about-hero__side {
    grid-column: 1 / 4;
    grid-row: 3;
    align-self: start;
  }

  .page-about .about-hero__media {
    grid-column: 1 / 13;
    grid-row: 4;
  }

  .page-about .practices {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
  }

  .page-about .practices__item:nth-child(2) {
    margin-top: clamp(24px, 4vw, 52px);
  }

  .page-about .practices__item:nth-child(3) {
    margin-top: clamp(10px, 1.8vw, 24px);
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: end;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1000px) {
  .page-about .about-spread {
    grid-template-columns: minmax(150px, 3fr) minmax(0, 8fr);
    gap: clamp(28px, 5vw, 72px);
  }

  .page-about .about-rail {
    position: sticky;
    top: 104px;
  }

  .page-about .practices__item .card__title {
    min-height: 3.9em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .js .page-about [data-reveal],
  .js .page-about [data-reveal].is-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .team-roster__meter i,
  .page-about .phase-rail__item::before,
  .page-about .review-list__item,
  .page-about .next-list__item,
  .page-about .season-grid__item {
    transition: none;
  }
}