.page-about {
  --about-rule: rgba(22, 104, 179, 0.22);
  --about-muted: rgba(11, 22, 32, 0.72);
  --about-muted-light: rgba(245, 250, 255, 0.74);
  background: var(--foam);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 4.2vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
  color: var(--ink);
}

.page-about .about-h2--light {
  color: var(--foam);
}

.page-about .about-head {
  margin-bottom: 40px;
}

.page-about .about-intro {
  max-width: 64ch;
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--about-muted);
}

.page-about .about-intro--light {
  color: var(--about-muted-light);
}

/* ---------- 首屏海报 ---------- */

.page-about .about-hero {
  position: relative;
  background: var(--deep-900);
  color: var(--foam);
  padding-bottom: 76px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
}

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

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.34;
}

.page-about .about-hero__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 26, 46, 0.34) 0%, rgba(6, 26, 46, 0.78) 52%, rgba(6, 26, 46, 0.97) 100%);
}

.page-about .about-hero__body {
  position: relative;
  z-index: 1;
  padding-top: 28px;
  padding-bottom: 12px;
}

.page-about .about-hero__label {
  margin: 22px 0 0;
  color: var(--neon);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 6.6vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  color: var(--foam);
}

.page-about .about-hero__lead {
  max-width: 58ch;
  margin: 20px 0 0;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--about-muted-light);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 20px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid rgba(207, 228, 245, 0.24);
}

.page-about .about-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__stats .stat__num {
  font-family: var(--font-numeric);
  font-size: 2.125rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.12em;
  color: var(--neon);
}

.page-about .about-hero__stats .stat__label {
  font-size: 0.875rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--about-muted-light);
}

.page-about .about-hero .crumbs__link {
  color: rgba(245, 250, 255, 0.72);
}

/* ---------- 赛季时间线 ---------- */

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--tide-500) 0%, rgba(22, 104, 179, 0.12) 100%);
}

.page-about .about-node {
  position: relative;
  padding: 0 0 40px 44px;
}

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

.page-about .about-node__dot {
  position: absolute;
  left: 6px;
  top: 10px;
  width: 13px;
  height: 13px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--foam);
  border: 2px solid var(--tide-500);
  transition: transform 0.24s ease, background-color 0.24s ease, border-color 0.24s ease;
}

.page-about .about-node__card {
  background: #ffffff;
  border: 1px solid var(--shallow);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  padding: 18px 20px;
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.page-about .about-node:hover .about-node__card,
.page-about .about-node:focus-within .about-node__card {
  transform: translateY(-4px);
  border-color: var(--tide-500);
  box-shadow: var(--shadow-2);
}

.page-about .about-node:hover .about-node__dot,
.page-about .about-node:focus-within .about-node__dot {
  background: var(--neon);
  border-color: var(--neon);
  transform: scale(1.25);
}

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

.page-about .about-node__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  line-height: 1.35;
  margin: 10px 0 6px;
  color: var(--ink);
}

.page-about .about-node__card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--about-muted);
}

/* ---------- 团队分工 ---------- */

.page-about .about-team {
  position: relative;
  background: var(--deep-900);
  color: var(--foam);
  overflow: hidden;
}

.page-about .about-team::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -14%;
  width: 46%;
  height: 124%;
  background: linear-gradient(160deg, rgba(22, 104, 179, 0.5), rgba(23, 224, 200, 0.05));
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-about .about-team .container {
  position: relative;
  z-index: 1;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

.page-about .about-ring-wrap {
  margin: 0;
  display: flex;
  justify-content: center;
}

.page-about .about-ring {
  width: 100%;
  max-width: 250px;
  height: auto;
  display: block;
}

.page-about .about-ring__value {
  font-family: var(--font-numeric);
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 0.04em;
  fill: var(--foam);
}

.page-about .about-ring__unit {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.18em;
  fill: var(--gull);
}

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

.page-about .about-role {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(207, 228, 245, 0.18);
}

.page-about .about-role:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-role__num {
  font-family: var(--font-numeric);
  font-size: 1.875rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--neon);
}

.page-about .about-role__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  margin: 0 0 6px;
  color: var(--foam);
}

.page-about .about-role p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--about-muted-light);
}

.page-about .about-team__shot {
  margin: 48px 0 0;
}

.page-about .about-team__shot .media-frame__caption {
  color: var(--about-muted-light);
}

/* ---------- 三道关 ---------- */

.page-about .about-steps {
  list-style: none;
  margin: 0 0 44px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-step {
  background: var(--foam);
  padding: 24px 20px;
}

.page-about .about-step__idx {
  display: block;
  font-family: var(--font-numeric);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--coral);
}

.page-about .about-step h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  margin: 8px 0 8px;
  color: var(--ink);
}

.page-about .about-step p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--about-muted);
}

.page-about .about-fields {
  border-left: 3px solid var(--tide-500);
  padding: 4px 0 4px 20px;
}

.page-about .about-fields h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-about .about-fields ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.page-about .about-fields li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--about-muted);
}

.page-about .about-fields li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 2px;
  background: var(--tide-500);
}

/* ---------- 六条联赛脉络 ---------- */

.page-about .about-leagues__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-league {
  background: var(--foam);
  padding: 24px 20px;
  transition: background-color 0.24s ease;
}

.page-about .about-league:hover {
  background: #ffffff;
}

.page-about .about-league__no {
  font-family: var(--font-numeric);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--tide-500);
  margin: 0 0 10px;
}

.page-about .about-league__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .about-league__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--about-muted);
}

/* ---------- 合作生态 ---------- */

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

.page-about .about-partner-card {
  padding: 24px 22px;
  background: #ffffff;
  border: 1px solid var(--shallow);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.page-about .about-partner-card:hover {
  transform: translateY(-4px);
  border-color: var(--tide-500);
  box-shadow: var(--shadow-2);
}

.page-about .about-partner-card__no {
  font-family: var(--font-numeric);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--coral);
  margin: 0 0 12px;
}

.page-about .about-partner-card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  margin: 0 0 10px;
  color: var(--ink);
}

.page-about .about-partner-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--about-muted);
}

.page-about .about-partner-card em {
  font-style: normal;
  color: var(--tide-500);
}

/* ---------- 档案 ---------- */

.page-about .about-archive__inner {
  display: grid;
  gap: 34px;
}

.page-about .about-archive__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-archive__list li {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--about-muted);
}

.page-about .about-archive__list .num {
  font-family: var(--font-numeric);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  line-height: 1;
  color: var(--tide-500);
}

.page-about .about-archive__links {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--about-muted);
}

.page-about .about-archive__links a {
  color: var(--tide-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 104, 179, 0.4);
}

.page-about .about-archive__links a:hover {
  color: var(--deep-700);
  border-bottom-color: var(--deep-700);
}

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

.page-about .about-archive__figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius);
}

/* ---------- 合作入口 ---------- */

.page-about .about-cta__box {
  position: relative;
  overflow: hidden;
  background: var(--deep-700);
  color: var(--foam);
  border-radius: var(--radius);
  padding: 40px 24px 36px;
}

.page-about .about-cta__box::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -60px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(23, 224, 200, 0.3), rgba(23, 224, 200, 0) 70%);
  pointer-events: none;
}

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

.page-about .about-cta__list {
  counter-reset: about-ct;
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-cta__list li {
  counter-increment: about-ct;
  position: relative;
  padding-left: 38px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--about-muted-light);
}

.page-about .about-cta__list li::before {
  content: counter(about-ct, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-numeric);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--neon);
}

.page-about .about-cta__note {
  margin: 20px 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(245, 250, 255, 0.68);
}

.page-about .about-cta__note a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(23, 224, 200, 0.45);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero__body {
    padding-top: 40px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px 24px;
  }

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

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

  .page-about .about-cta__box {
    padding: 52px 44px 48px;
  }
}

@media (min-width: 860px) {
  .page-about .about-team__grid {
    grid-template-columns: 290px minmax(0, 1fr);
    gap: 56px;
  }

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

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

  .page-about .about-timeline::before {
    left: 50%;
  }

  .page-about .about-node {
    width: calc(50% - 44px);
    padding: 0 0 56px 0;
  }

  .page-about .about-node:nth-child(odd) {
    margin-right: auto;
  }

  .page-about .about-node:nth-child(even) {
    margin-left: auto;
  }

  .page-about .about-node:nth-child(odd) .about-node__dot {
    left: auto;
    right: -50px;
    top: 12px;
  }

  .page-about .about-node:nth-child(even) .about-node__dot {
    left: -50px;
    top: 12px;
  }

  .page-about .about-archive__inner {
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: 56px;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__body {
    padding-top: 52px;
    padding-bottom: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}