.page-about {
  --about-line: 1px solid var(--ms-line);
  --about-pad-y: clamp(52px, 9vw, 104px);
  background: var(--ms-ink);
  color: var(--ms-bone);
}

.page-about .ms-section {
  padding-block: var(--about-pad-y);
}

.page-about .ms-breadcrumb {
  margin-top: 20px;
}

/* ---------- 首屏 ---------- */
.about-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(28px, 4vw, 48px);
}

.about-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -18%;
  width: 52%;
  height: 118%;
  background: linear-gradient(200deg, rgba(23, 53, 44, 0.62), rgba(23, 53, 44, 0) 72%);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.about-hero__grid {
  position: relative;
  display: grid;
  gap: 34px;
}

.about-hero__title {
  margin: 16px 0 22px;
  max-width: 18ch;
}

.about-hero__aside {
  border-top: 4px solid var(--ms-cyan);
  padding-top: 20px;
}

.about-hero__aside-text {
  margin: 0;
  max-width: 34ch;
  font-size: var(--ms-t15);
  line-height: 1.85;
  color: var(--ms-slate);
}

.about-hero__band {
  position: relative;
  margin-top: clamp(38px, 5vw, 62px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ms-line);
  border: var(--about-line);
}

.about-fact {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  min-height: 132px;
  padding: 22px 18px 22px;
  background: var(--ms-ink);
  transition: background 180ms var(--ms-ease);
}

.about-fact:hover {
  background: var(--ms-layer);
}

.about-fact__num {
  display: block;
  font-family: var(--ms-mono);
  font-size: clamp(30px, 6vw, 46px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ms-cyan);
}

.about-fact__mid {
  margin-left: 2px;
  font-size: 0.52em;
}

.about-fact__label {
  font-size: var(--ms-t13);
  letter-spacing: 0.06em;
  color: var(--ms-slate);
}

/* ---------- 为什么只做意甲 ---------- */
.about-focus__grid {
  display: grid;
  gap: 34px;
}

.about-focus__title {
  margin: 14px 0 20px;
}

.about-focus__media {
  position: relative;
  border: var(--about-line);
}

.about-focus__media::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 54%;
  background: var(--ms-cyan);
}

/* ---------- 团队与分工 ---------- */
.about-team__hero {
  border: var(--about-line);
  margin-bottom: clamp(32px, 4vw, 48px);
}

.about-team__head {
  max-width: 62ch;
}

.about-roster {
  margin-top: clamp(30px, 4vw, 46px);
  display: grid;
  gap: 1px;
  background: var(--ms-line);
  border: var(--about-line);
}

.about-role {
  position: relative;
  padding: 26px 22px 30px;
  background: var(--ms-ink);
  transition: background 180ms var(--ms-ease);
}

.about-role::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--ms-cyan);
  transition: height 220ms var(--ms-ease);
}

.about-role:hover {
  background: var(--ms-layer);
}

.about-role:hover::before {
  height: 100%;
}

.about-role__count {
  display: block;
  font-family: var(--ms-mono);
  font-size: var(--ms-t32);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ms-cyan);
}

.about-role__unit {
  margin-left: 3px;
  font-size: 0.42em;
  font-weight: 500;
  color: var(--ms-slate);
}

.about-role__name {
  margin: 14px 0 10px;
  font-size: var(--ms-t17);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.about-role__desc {
  margin: 0;
  font-size: var(--ms-t15);
  line-height: 1.8;
  color: var(--ms-slate);
}

.about-team__note {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--ms-gold);
  font-size: var(--ms-t13);
  letter-spacing: 0.04em;
  color: var(--ms-slate);
}

/* ---------- 数据从采集到发布 ---------- */
.about-flow {
  position: relative;
  background: var(--ms-layer);
}

.about-flow__head {
  max-width: 58ch;
}

.about-flow__steps {
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--ms-line);
  border: var(--about-line);
}

.about-step {
  position: relative;
  padding: 28px 22px 32px;
  background: var(--ms-ink);
  transition: background 180ms var(--ms-ease);
}

.about-step:hover {
  background: var(--ms-moss);
}

.about-step__no {
  display: inline-block;
  font-family: var(--ms-mono);
  font-size: var(--ms-t12);
  letter-spacing: 0.16em;
  color: var(--ms-gold);
  border: 1px solid var(--ms-gold);
  padding: 4px 9px;
}

.about-step__title {
  margin: 16px 0 10px;
  font-size: var(--ms-t17);
  font-weight: 500;
}

.about-step p {
  margin: 0;
  font-size: var(--ms-t15);
  line-height: 1.8;
  color: var(--ms-slate);
}

/* ---------- 数据标准 ---------- */
.about-standard {
  position: relative;
  overflow: hidden;
}

.about-standard::before {
  content: "";
  position: absolute;
  top: -70px;
  left: -90px;
  width: 300px;
  height: 260px;
  background: var(--ms-moss);
  transform: rotate(-6deg);
  opacity: 0.6;
  pointer-events: none;
}

.about-standard__grid {
  position: relative;
  display: grid;
  gap: 34px;
}

.about-standard__title {
  margin: 14px 0 20px;
}

.about-standard__cards {
  display: grid;
  gap: 1px;
  background: var(--ms-line);
  border: var(--about-line);
  align-content: start;
}

.about-spec {
  padding: 22px 20px 24px;
  background: var(--ms-ink);
}

.about-spec__name {
  margin: 0 0 10px;
  font-size: var(--ms-t17);
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ms-cyan);
}

.about-spec p {
  margin: 0;
  font-size: var(--ms-t15);
  line-height: 1.8;
  color: var(--ms-slate);
}

/* ---------- 赛季制历程 ---------- */
.about-timeline {
  background: var(--ms-layer);
}

.about-timeline__grid {
  display: grid;
  gap: 38px;
}

.about-axis {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0 0 0 26px;
  list-style: none;
  border-left: 1px solid var(--ms-line);
}

.about-axis__item {
  position: relative;
  padding-bottom: 34px;
  transition: border-color 180ms var(--ms-ease);
}

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

.about-axis__dot {
  position: absolute;
  top: 5px;
  left: -32px;
  width: 11px;
  height: 11px;
  background: var(--ms-layer);
  border: 1px solid var(--ms-cyan);
  transition: background 160ms var(--ms-ease), transform 160ms var(--ms-ease);
}

.about-axis__item:hover .about-axis__dot {
  background: var(--ms-cyan);
  transform: scale(1.25);
}

.about-axis__tag {
  display: inline-block;
  margin-bottom: 10px;
}

.about-axis__title {
  margin: 0 0 8px;
  font-size: var(--ms-t22);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.about-axis__item p {
  margin: 0;
  max-width: 60ch;
  font-size: var(--ms-t15);
  line-height: 1.8;
  color: var(--ms-slate);
}

.about-axis__more {
  margin-top: 10px;
  font-size: var(--ms-t13);
  color: var(--ms-slate);
  opacity: 0.82;
}

.about-timeline__side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-timeline__texture {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: var(--about-line);
  opacity: 0.85;
  object-fit: cover;
}

.about-box {
  border: var(--about-line);
  background: var(--ms-ink);
  padding: 22px 20px 24px;
}

.about-box__title {
  margin: 0 0 14px;
  font-size: var(--ms-t12);
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--ms-cyan);
}

.about-box__list {
  margin: 0;
  padding: 0;
}

.about-box__list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--ms-line);
}

.about-box__list > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.about-box__list dt {
  font-size: var(--ms-t13);
  color: var(--ms-slate);
}

.about-box__list dd {
  margin: 0;
  font-family: var(--ms-mono);
  font-size: var(--ms-t22);
  font-weight: 600;
  color: var(--ms-bone);
}

/* ---------- 合作与教学 ---------- */
.about-partners__head {
  max-width: 58ch;
}

.about-partners__grid {
  margin-top: clamp(30px, 4vw, 46px);
  display: grid;
  gap: 1px;
  background: var(--ms-line);
  border: var(--about-line);
}

.about-partner {
  position: relative;
  padding: 30px 24px 34px;
  background: var(--ms-ink);
  transition: background 180ms var(--ms-ease);
}

.about-partner:hover {
  background: var(--ms-layer);
}

.about-partner__no {
  display: block;
  font-family: var(--ms-mono);
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ms-gold);
}

.about-partner__name {
  margin: 16px 0 12px;
  font-size: var(--ms-t22);
  font-weight: 400;
}

.about-partner p {
  margin: 0;
  max-width: 46ch;
  font-size: var(--ms-t15);
  line-height: 1.8;
  color: var(--ms-slate);
}

/* ---------- 结尾 ---------- */
.about-cta__inner {
  border-top: 4px solid var(--ms-cyan);
  padding-top: 32px;
  display: grid;
  gap: 28px;
}

.about-cta__copy .ms-h2 {
  margin: 14px 0 18px;
  max-width: 26ch;
}

.about-cta__link {
  color: var(--ms-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 227, 194, 0.42);
  transition: border-color 160ms var(--ms-ease), color 160ms var(--ms-ease);
}

.about-cta__link:hover {
  border-bottom-color: var(--ms-cyan);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .about-roster {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

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

@media (min-width: 860px) {
  .about-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: end;
    gap: 56px;
  }

  .about-hero__aside {
    border-top: 0;
    border-left: 4px solid var(--ms-cyan);
    padding: 6px 0 6px 22px;
  }

  .about-focus__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
    align-items: center;
    gap: 60px;
  }

  .about-standard__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    align-items: start;
    gap: 56px;
  }

  .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 48px;
  }
}

@media (min-width: 960px) {
  .about-timeline__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.6fr);
    align-items: start;
    gap: 60px;
  }

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

@media (min-width: 1180px) {
  .about-roster {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (hover: hover) and (pointer: fine) {
  .about-axis__more {
    display: none;
  }

  .about-axis__item:hover .about-axis__more,
  .about-axis__item:focus-within .about-axis__more {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-fact,
  .page-about .about-role,
  .page-about .about-role::before,
  .page-about .about-step,
  .page-about .about-partner,
  .page-about .about-axis__dot,
  .page-about .about-cta__link {
    transition: none;
  }

  .page-about .about-axis__item:hover .about-axis__dot {
    transform: none;
  }
}