.page-about {
  --ab-line: rgba(155, 246, 224, .14);
  --ab-line-mid: rgba(155, 246, 224, .26);
  --ab-line-hot: rgba(56, 242, 200, .44);
  position: relative;
  overflow-x: hidden;
  color: var(--bone-78);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: 18px;
  padding-bottom: 6px;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--bone-46);
}

.page-about .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .breadcrumb li + li::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--ab-line-mid);
}

.page-about .breadcrumb a {
  color: var(--bone-62);
  text-decoration: none;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 通用排版 ---------- */
.page-about .section {
  padding: 52px 0;
}

.page-about .section--tight {
  padding: 40px 0;
}

.page-about .eyebrow {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-about .section-title {
  margin: 12px 0 18px;
  font-size: clamp(22px, 4.6vw, 34px);
  line-height: 1.3;
  letter-spacing: .055em;
  font-weight: 700;
  color: var(--bone);
}

.page-about .lead-text {
  margin: 0 0 22px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--bone-78);
}

.page-about .body-text {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--bone-62);
}

.page-about .body-text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--ab-line-hot);
}

.page-about .data-unit {
  margin-left: .15em;
  font-size: .58em;
  color: var(--bone-62);
}

/* ---------- 首屏叙事块 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border-bottom: 1px solid var(--ab-line);
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
}

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .34;
  filter: saturate(.62) contrast(1.06);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(11, 15, 14, .95) 0%, rgba(11, 15, 14, .78) 48%, rgba(15, 42, 36, .6) 100%),
    repeating-linear-gradient(90deg, rgba(155, 246, 224, .05) 0 1px, transparent 1px 92px);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  padding-top: 44px;
  padding-bottom: 42px;
}

.page-about .about-hero h1 {
  margin: 14px 0 18px;
  max-width: 20ch;
  font-size: clamp(28px, 7.4vw, 50px);
  line-height: 1.16;
  letter-spacing: .055em;
  font-weight: 700;
  color: var(--bone);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--bone-78);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: 32px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--ab-line-mid);
}

.page-about .about-hero__facts div {
  position: relative;
  padding-left: 12px;
}

.page-about .about-hero__facts div::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 2px;
  background: var(--cyan);
  opacity: .55;
}

.page-about .about-hero__facts dt {
  margin: 0 0 7px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--bone-46);
}

.page-about .about-hero__facts dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 26px;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

/* ---------- 起点与今天 ---------- */
.page-about .about-scale__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-scale__panel {
  padding: 24px 22px;
  background: var(--panel);
}

.page-about .about-scale__panel-title {
  margin: 0 0 16px;
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--bone-46);
}

.page-about .province-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .province-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .province-list li:last-child {
  border-bottom: 0;
}

.page-about .province-list__rank {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: .06em;
}

.page-about .province-list__name {
  font-size: 18px;
  letter-spacing: .08em;
  color: var(--bone);
}

.page-about .about-scale__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--bone-46);
}

/* ---------- 版本演进 ---------- */
.page-about .about-versions {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(20, 58, 49, .34) 0%, rgba(11, 15, 14, 0) 78%);
}

.page-about .about-versions__bg {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 240px;
  object-fit: cover;
  opacity: .12;
  pointer-events: none;
}

.page-about .about-versions__inner {
  position: relative;
  z-index: 2;
}

.page-about .about-versions__tabs {
  margin-top: 26px;
}

.page-about .tabbar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .tab {
  position: relative;
  flex: 0 0 auto;
  padding: 12px 16px 13px;
  border: 1px solid var(--ab-line-mid);
  background: rgba(20, 58, 49, .5);
  color: var(--bone-62);
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: .06em;
  white-space: nowrap;
  cursor: pointer;
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .tab::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: var(--ab-line-mid);
  transition: background-color .2s var(--ease);
}

.page-about .tab:hover {
  color: var(--bone);
  border-color: var(--ab-line-hot);
}

.page-about .tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-about .tab[aria-selected="true"]::before {
  background: var(--amber);
}

.page-about .tab:focus-visible {
  outline: 2px solid var(--bone);
  outline-offset: 2px;
}

.page-about .tabpanel {
  margin-top: 6px;
  padding: 24px 20px;
  background: var(--panel);
  border-left: 2px solid var(--cyan);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .tabpanel[hidden] {
  display: none;
}

.page-about .about-versions__panel-title {
  margin: 0 0 12px;
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: .06em;
  color: var(--bone);
}

.page-about .about-versions__panel .body-text {
  margin-bottom: 14px;
}

.page-about .about-versions__meta {
  margin: 0;
  font-size: 13px;
  letter-spacing: .07em;
  color: var(--cyan-soft);
}

.page-about .about-versions__link {
  margin: 16px 0 0;
  font-size: 14px;
  letter-spacing: .04em;
}

.page-about .about-versions__link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--ab-line-hot);
}

/* ---------- 团队构成 ---------- */
.page-about .team-bars {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  max-width: 1000px;
}

.page-about .team-bar {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 4px;
  padding: 18px 0;
  border-top: 1px solid var(--ab-line);
}

.page-about .team-bar:last-child {
  border-bottom: 1px solid var(--ab-line);
}

.page-about .team-bar__num {
  grid-column: 1;
  grid-row: 1 / 4;
  align-self: start;
  font-family: var(--font-data);
  font-size: 30px;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .team-bar__name {
  grid-column: 2;
  grid-row: 1;
  font-size: 17px;
  letter-spacing: .06em;
  color: var(--bone);
}

.page-about .team-bar__role {
  grid-column: 2;
  grid-row: 2;
  font-size: 13px;
  line-height: 1.7;
  color: var(--bone-46);
  transition: color .2s var(--ease);
}

.page-about .team-bar__track {
  grid-column: 2;
  grid-row: 3;
  height: 4px;
  margin-top: 8px;
  background: rgba(155, 246, 224, .12);
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  background: var(--cyan-soft);
  transition: background-color .25s var(--ease);
}

.page-about .team-bar--editor .team-bar__fill { width: 35.3%; }
.page-about .team-bar--video .team-bar__fill { width: 17.6%; }
.page-about .team-bar--tech .team-bar__fill { width: 23.5%; }
.page-about .team-bar--ops .team-bar__fill { width: 23.5%; }

.page-about .team-bar:hover .team-bar__fill {
  background: var(--cyan);
}

.page-about .team-bar:hover .team-bar__role {
  color: var(--bone-78);
}

.page-about .about-team__foot {
  max-width: 70ch;
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--bone-46);
}

/* ---------- 赛季节奏 ---------- */
.page-about .about-season__banner {
  margin-top: 26px;
}

.page-about .about-season__banner img {
  display: block;
  width: 100%;
  height: 190px;
  object-fit: cover;
  opacity: .58;
}

.page-about .season-ruler {
  display: flex;
  gap: 3px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .season-ruler__item {
  display: block;
  flex: 1 1 0;
  min-width: 0;
}

.page-about .season-ruler__bar {
  display: block;
  width: 100%;
  height: 22px;
}

.page-about .season-ruler__item--open .season-ruler__bar {
  background: linear-gradient(180deg, rgba(255, 138, 61, .62), rgba(255, 138, 61, .12));
}

.page-about .season-ruler__item--run .season-ruler__bar {
  background: linear-gradient(180deg, rgba(56, 242, 200, .5), rgba(56, 242, 200, .1));
}

.page-about .season-ruler__item--off .season-ruler__bar {
  background: repeating-linear-gradient(90deg, rgba(110, 122, 118, .32) 0 3px, transparent 3px 7px);
}

.page-about .season-ruler__month {
  display: block;
  margin-top: 7px;
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .02em;
  text-align: center;
  color: var(--bone-46);
}

.page-about .season-notes {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-about .season-note {
  padding: 22px 20px;
  background: var(--panel);
  border-top: 2px solid var(--ab-line-hot);
}

.page-about .season-note--open {
  border-top-color: var(--amber);
}

.page-about .season-note h3 {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: .05em;
  color: var(--bone);
}

.page-about .season-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--bone-62);
}

/* ---------- 内容产能 ---------- */
.page-about .output-grid {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.page-about .output-card {
  padding: 24px 20px 26px;
  background: var(--layer);
  border-bottom: 2px solid var(--cyan);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

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

.page-about .output-card__num {
  font-family: var(--font-data);
  font-size: 40px;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .output-card__unit {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--bone-46);
}

.page-about .output-card h3 {
  margin: 16px 0 10px;
  font-size: 17px;
  letter-spacing: .06em;
  color: var(--bone);
}

.page-about .output-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--bone-62);
}

.page-about .about-output__foot {
  max-width: 76ch;
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--ab-line);
  font-size: 14px;
  line-height: 1.78;
  color: var(--bone-46);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: 30px;
}

.page-about .partner-stats {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-about .partner-stats li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 18px;
  background: var(--panel-2);
}

.page-about .partner-stats__num {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 28px;
  line-height: 1.1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .partner-stats__label {
  font-size: 14px;
  line-height: 1.65;
  color: var(--bone-62);
}

/* ---------- 收尾行动条 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  margin-top: 16px;
  background: linear-gradient(100deg, var(--panel) 0%, var(--panel-2) 52%, var(--ink) 100%);
  border-top: 1px solid var(--ab-line-mid);
}

.page-about .about-cta::after {
  content: "";
  position: absolute;
  top: -60%;
  right: -8%;
  width: 46%;
  height: 220%;
  background: linear-gradient(180deg, rgba(56, 242, 200, .2), rgba(56, 242, 200, 0));
  transform: rotate(16deg);
  pointer-events: none;
}

.page-about .about-cta__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 24px;
  padding-top: 44px;
  padding-bottom: 48px;
}

.page-about .about-cta h2 {
  margin: 12px 0 12px;
  font-size: clamp(21px, 4.2vw, 30px);
  line-height: 1.34;
  letter-spacing: .05em;
  color: var(--bone);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--bone-62);
}

.page-about .about-cta__btn {
  justify-self: start;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-season__banner img {
    height: 240px;
  }

  .page-about .season-ruler__month {
    font-size: 11px;
  }

  .page-about .output-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .season-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 900px) {
  .page-about .section {
    padding: 72px 0;
  }

  .page-about .section--tight {
    padding: 52px 0;
  }

  .page-about .about-hero__inner {
    padding-top: 64px;
    padding-bottom: 58px;
  }

  .page-about .about-versions__bg {
    width: 62%;
    height: 100%;
    opacity: .16;
  }

  .page-about .tabpanel {
    padding: 30px 32px;
  }

  .page-about .team-bar {
    grid-template-columns: 72px minmax(0, 1fr) minmax(0, 260px);
    column-gap: 24px;
    align-items: center;
  }

  .page-about .team-bar__num {
    grid-row: 1 / 3;
    align-self: center;
    font-size: 34px;
  }

  .page-about .team-bar__name { grid-row: 1; }
  .page-about .team-bar__role { grid-row: 2; }

  .page-about .team-bar__track {
    grid-column: 3;
    grid-row: 1 / 3;
    align-self: center;
    margin-top: 0;
  }

  .page-about .about-season__banner img {
    height: 300px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }

  .page-about .about-cta__btn {
    justify-self: end;
  }
}

@media (min-width: 1024px) {
  .page-about .about-scale__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}