.page-about {
  --about-line: rgba(201, 162, 92, .28);
  --about-line-soft: rgba(201, 162, 92, .13);
  --about-gap: clamp(18px, 3vw, 36px);
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(104px, 14vw, 168px) 0 clamp(40px, 7vw, 76px);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(118deg, rgba(79, 227, 193, .10) 0%, rgba(7, 26, 43, 0) 48%),
    linear-gradient(90deg, rgba(201, 162, 92, .16) 1px, transparent 1px) 0 0 / 92px 100%,
    linear-gradient(0deg, rgba(201, 162, 92, .09) 1px, transparent 1px) 0 0 / 100% 92px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), rgba(0, 0, 0, .18));
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), rgba(0, 0, 0, .18));
  pointer-events: none;
}

.page-about .breadcrumbs {
  margin: 0 0 clamp(22px, 4vw, 40px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(143, 166, 184, .45);
}

.page-about .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-about .breadcrumbs span[aria-current="page"] {
  color: var(--paper);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  align-items: end;
}

.page-about .about-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--sand);
}

.page-about .about-hero h1 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(40px, 7vw, 92px);
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--paper-white);
}

.page-about .about-hero h1 em {
  font-style: normal;
  color: var(--teal);
  border-bottom: 3px solid var(--coral);
}

.page-about .about-hero__lead {
  max-width: 36em;
  margin: 24px 0 0;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(242, 233, 216, .78);
}

.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid rgba(143, 166, 184, .28);
  border-radius: 999px;
  transition: color .2s ease, background-color .2s ease, border-color .2s ease;
}

.page-about .about-index b {
  font-weight: 600;
  color: var(--sand);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--ink-900);
  background: var(--teal);
  border-color: var(--teal);
}

.page-about .about-index a:hover b,
.page-about .about-index a:focus-visible b {
  color: var(--ink-900);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--about-line);
  border-radius: 3px;
  background: var(--ink-800);
  overflow: hidden;
  box-shadow: 16px 18px 0 -12px rgba(255, 107, 74, .28);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(1.06) contrast(1.04);
}

.page-about .about-hero__media figcaption,
.page-about .about-team__media figcaption,
.page-about .about-archive__media figcaption {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
}

.page-about .about-hero__media figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  color: var(--ink-900);
  background: var(--sand);
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  position: relative;
  padding: clamp(52px, 8vw, 104px) 0;
}

.page-about .about-section--paper {
  --about-line: rgba(17, 22, 28, .18);
  --about-line-soft: rgba(17, 22, 28, .08);
  background: var(--paper);
  color: var(--ink-black);
}

.page-about .about-section--band {
  background: var(--ink-800);
}

.page-about .about-chapter-head {
  max-width: 48em;
  margin-bottom: clamp(24px, 4vw, 46px);
}

.page-about .about-marker {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 16px;
}

.page-about .about-marker__num {
  font-family: var(--font-mono);
  font-size: clamp(46px, 8vw, 104px);
  font-weight: 300;
  line-height: .8;
  letter-spacing: -.04em;
  color: var(--sand);
  opacity: .55;
}

.page-about .about-marker__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--mist);
}

.page-about .about-section--paper .about-marker__num {
  color: var(--coral-deep);
  opacity: .45;
}

.page-about .about-section--paper .about-marker__label {
  color: rgba(17, 22, 28, .55);
}

.page-about .about-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(27px, 4.2vw, 52px);
  line-height: 1.18;
  letter-spacing: -.015em;
  color: var(--paper-white);
}

.page-about .about-section--paper .about-h2 {
  color: var(--ink-black);
}

.page-about .about-deck {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: clamp(15px, 1.45vw, 17px);
  line-height: 1.85;
  color: rgba(242, 233, 216, .72);
}

.page-about .about-section--paper .about-deck {
  color: rgba(17, 22, 28, .72);
}

.page-about .about-body p {
  margin: 0 0 1.05em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
}

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

.page-about .about-section--paper .about-body p {
  color: rgba(17, 22, 28, .86);
}

.page-about .about-note {
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--sand);
  font-size: 12.5px;
  line-height: 1.8;
  letter-spacing: .02em;
  color: var(--mist);
}

.page-about .about-section--paper .about-note {
  border-left-color: var(--coral-deep);
  color: rgba(17, 22, 28, .62);
}

.page-about .about-note a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 193, .5);
}

.page-about .about-section--paper .about-note a {
  color: var(--coral-deep);
  border-bottom-color: rgba(217, 72, 46, .45);
}

.page-about .about-note a:hover,
.page-about .about-note a:focus-visible {
  border-bottom-width: 2px;
}

/* ---------- 01 起点 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .about-side {
  padding-top: 6px;
}

.page-about .about-side__coord {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  letter-spacing: .04em;
  color: var(--coral-deep);
}

.page-about .about-side__text {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid rgba(217, 72, 46, .35);
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(17, 22, 28, .66);
}

/* ---------- 02 时间线 ---------- */
.page-about .about-timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl-node {
  position: relative;
  padding-bottom: clamp(24px, 4vw, 38px);
}

.page-about .about-tl-node:last-child {
  padding-bottom: 0;
}

.page-about .about-tl-mark {
  margin: 0 0 8px;
}

.page-about .about-tl-stage {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--sand);
}

.page-about .about-tl-body {
  position: relative;
  padding: 0 0 6px clamp(16px, 3vw, 28px);
  border-left: 1px solid var(--about-line);
}

.page-about .about-tl-node:last-child .about-tl-body {
  border-left-color: transparent;
}

.page-about .about-tl-dot {
  position: absolute;
  left: -4.5px;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sand);
  box-shadow: 0 0 0 4px var(--ink-900);
}

.page-about .about-tl-node:last-child .about-tl-dot {
  background: var(--teal);
  box-shadow: 0 0 0 4px var(--ink-900), 0 0 14px rgba(79, 227, 193, .55);
}

.page-about .about-tl-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.4;
  color: var(--paper-white);
}

.page-about .about-tl-body p {
  margin: 0;
  max-width: 44em;
  font-size: clamp(14.5px, 1.35vw, 16px);
  line-height: 1.85;
  color: rgba(242, 233, 216, .72);
}

/* ---------- 03 赛区网络 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 44px);
  border: 1px solid var(--about-line-soft);
  background: var(--about-line-soft);
}

.page-about .about-stat {
  padding: clamp(18px, 3vw, 28px);
  background: var(--ink-800);
}

.page-about .about-stat--lead {
  grid-column: span 2;
  background: linear-gradient(152deg, #163d5a 0%, #071a2b 78%);
}

.page-about .about-stat__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(30px, 4.4vw, 48px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat--lead .about-stat__num {
  font-size: clamp(60px, 11vw, 118px);
  color: var(--coral);
}

.page-about .about-stat__label {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--paper-white);
}

.page-about .about-stat__desc {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(242, 233, 216, .62);
}

/* ---------- 04 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-team__media {
  margin: 0;
  border: 1px solid rgba(17, 22, 28, .22);
  background: var(--paper-white);
  overflow: hidden;
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team__media figcaption {
  padding: 9px 14px;
  color: var(--paper);
  background: var(--ink-700);
}

.page-about .about-team__body > p {
  margin: 0 0 1.05em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: rgba(17, 22, 28, .86);
}

.page-about .about-roles {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 12px;
  align-items: baseline;
}

.page-about .about-role__name {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-black);
}

.page-about .about-role__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--coral-deep);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role__bar {
  grid-column: 1 / -1;
  display: block;
  height: 6px;
  border-radius: 99px;
  background: rgba(17, 22, 28, .12);
  overflow: hidden;
}

.page-about .about-role__bar > i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--coral), var(--sand));
}

.page-about .about-team__foot {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(17, 22, 28, .22);
  font-size: 13px;
  line-height: 1.8;
  color: rgba(17, 22, 28, .62);
}

/* ---------- 05 内容方法 ---------- */
.page-about .about-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  background: var(--about-line-soft);
}

.page-about .about-step {
  padding: clamp(18px, 3vw, 30px);
  background: var(--ink-900);
}

.page-about .about-step__no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--sand);
}

.page-about .about-step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.4;
  color: var(--paper-white);
}

.page-about .about-step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(242, 233, 216, .68);
}

/* ---------- 06 改版归档 ---------- */
.page-about .about-archive {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-archive__media {
  margin: 0;
  border: 1px solid rgba(17, 22, 28, .22);
  background: var(--paper-white);
  overflow: hidden;
}

.page-about .about-archive__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-about .about-archive__media figcaption {
  padding: 9px 14px;
  color: var(--paper);
  background: var(--ink-700);
}

.page-about .about-archive__body > p {
  margin: 0 0 1.05em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: rgba(17, 22, 28, .86);
}

.page-about .about-archive__list {
  margin: 20px 0 26px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-archive__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(17, 22, 28, .78);
}

.page-about .about-archive__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  background: var(--coral-deep);
  transform: rotate(45deg);
}

.page-about .about-archive__body .btn {
  display: inline-block;
  text-decoration: none;
}

/* ---------- 07 继续了解 ---------- */
.page-about .about-more .about-chapter-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--about-line);
  background: var(--about-line-soft);
}

.page-about .about-cta__item {
  display: block;
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-900);
  text-decoration: none;
  color: inherit;
  transition: background-color .25s ease;
}

.page-about .about-cta__item:hover,
.page-about .about-cta__item:focus-visible {
  background: var(--ink-700);
  outline: none;
}

.page-about .about-cta__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--sand);
}

.page-about .about-cta__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 500;
  line-height: 1.4;
  color: var(--paper-white);
}

.page-about .about-cta__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 860px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-hero__media {
    transform: rotate(-1.4deg);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(28px, 5vw, 72px);
  }

  .page-about .about-tl-node {
    display: grid;
    grid-template-columns: minmax(110px, 150px) minmax(0, 1fr);
    column-gap: clamp(20px, 4vw, 52px);
  }

  .page-about .about-tl-mark {
    margin: 0;
    padding-top: 4px;
    text-align: right;
  }

  .page-about .about-tl-body {
    padding-left: clamp(22px, 3vw, 34px);
  }

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

  .page-about .about-stat--lead {
    grid-column: span 2;
  }

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

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

  .page-about .about-archive {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(30px, 5vw, 68px);
  }

  .page-about .about-archive__media {
    transform: rotate(1.2deg);
  }

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

@media (min-width: 1180px) {
  .page-about .about-hero__media img {
    aspect-ratio: 16 / 9;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index a,
  .page-about .about-cta__item {
    transition: none;
  }

  .page-about .about-hero__media,
  .page-about .about-archive__media {
    transform: none;
  }
}