.page-about {
  --about-pad: clamp(1.25rem, 4vw, 3rem);
  --about-gap: clamp(1.5rem, 4vw, 3rem);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  margin-top: 1.1rem;
  margin-bottom: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(1.25rem, 3.5vw, 2.5rem) 0 clamp(1.75rem, 5vw, 3.25rem);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: end;
}

.page-about .about-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
}

.page-about .about-hero__title {
  margin: 0.7rem 0 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 8vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: 0.005em;
  color: var(--ink);
}

.page-about .about-hero__title .slant {
  display: inline-block;
  color: var(--green);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 56ch;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.page-about .about-hero__media img,
.page-about .about-timeline__media img,
.page-about .about-team__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 首屏数据带 */
.page-about .about-hero__band {
  margin-top: clamp(1.75rem, 5vw, 3rem);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-hero__band .data-band__cell {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.05rem 0.95rem 1.15rem;
  background: var(--paper);
  min-width: 0;
}

.page-about .about-hero__band .data-band__value {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4vw, 2.05rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--red);
}

.page-about .about-hero__band .data-band__cell:nth-child(2) .data-band__value {
  color: var(--red-deep);
}

.page-about .about-hero__band .data-band__cell:nth-child(3) .data-band__value {
  color: var(--cyan-ink);
}

.page-about .about-hero__band .data-band__cell:nth-child(4) .data-band__value {
  color: var(--green);
}

.page-about .about-hero__band .data-band__label {
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 目录条 ---------- */
.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.9rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-index__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--green);
  padding: 0.22rem 0.5rem;
  border-radius: var(--radius);
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index__list a {
  display: inline-block;
  padding: 0.22rem 0;
  font-size: 0.88rem;
  color: var(--slate);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

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

/* ---------- 通用章节节奏 ---------- */
.page-about .about-positioning,
.page-about .about-team,
.page-about .about-partners {
  padding: clamp(2.25rem, 6vw, 4.25rem) 0;
}

.page-about .about-timeline,
.page-about .about-coverage,
.page-about .about-reports {
  padding: clamp(2.25rem, 6vw, 4.25rem) 0;
}

.page-about .about-wide-title {
  font-family: var(--font-display);
  line-height: 1;
}

/* ---------- 定位 ---------- */
.page-about .about-positioning__head {
  max-width: 68ch;
}

.page-about .about-positioning__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.9rem, 2.5vw, 1.4rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-role {
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
  min-width: 0;
}

.page-about .about-role h3 {
  margin: 0.8rem 0 0.5rem;
  font-size: 1.12rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-role p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-margin-note {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0 auto;
  max-width: 34ch;
  padding: 0.9rem 1.05rem;
  background: var(--sand);
  border: 1px solid var(--line);
  border-left: 4px solid var(--red);
  border-radius: var(--radius);
  box-shadow: var(--layer-shadow);
  font-family: var(--font-mono);
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--slate);
  transform: rotate(-1.2deg);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__intro {
  max-width: 62ch;
}

.page-about .about-timeline .section__title,
.page-about .about-timeline .timeline__content h3 {
  color: var(--paper);
}

.page-about .about-timeline .section__lead,
.page-about .about-timeline .timeline__content p {
  color: rgba(247, 244, 239, 0.76);
}

.page-about .about-timeline__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 clamp(1.1rem, 3vw, 1.75rem);
  list-style: none;
  border-left: 2px solid rgba(234, 223, 200, 0.28);
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: clamp(1.25rem, 3.5vw, 2rem);
  transition: transform 0.18s ease;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  top: 0.4rem;
  left: calc(-1 * clamp(1.1rem, 3vw, 1.75rem) - 7px);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 0 0 4px rgba(255, 183, 3, 0.18);
  transition: background-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .timeline__item:hover,
.page-about .timeline__item:focus-within {
  transform: translateX(4px);
}

.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-within::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 208, 0.22);
}

.page-about .timeline__mark {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yellow);
}

.page-about .timeline__content {
  padding: 0.2rem 0;
  border-radius: var(--radius);
  transition: background-color 0.18s ease, padding 0.18s ease;
}

.page-about .timeline__item:hover .timeline__content,
.page-about .timeline__item:focus-within .timeline__content {
  padding: 0.7rem 0.9rem;
  background: rgba(247, 244, 239, 0.07);
}

.page-about .timeline__content h3 {
  margin: 0.35rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  letter-spacing: 0.01em;
}

.page-about .timeline__content p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.94rem;
  line-height: 1.8;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-team__intro {
  max-width: 56ch;
}

.page-about .about-duties {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .duty {
  padding: clamp(1.05rem, 2.5vw, 1.5rem);
  background: var(--paper);
  border-top: 3px solid var(--green);
  min-width: 0;
}

.page-about .duty:nth-child(2) {
  border-top-color: var(--red);
}

.page-about .duty:nth-child(3) {
  border-top-color: var(--yellow);
}

.page-about .duty:nth-child(4) {
  border-top-color: var(--cyan);
}

.page-about .duty__no {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--line);
}

.page-about .duty h3 {
  margin: 0.55rem 0 0.5rem;
  font-size: 1.04rem;
  color: var(--ink);
}

.page-about .duty p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 数据覆盖 ---------- */
.page-about .about-coverage__wrap {
  margin-top: clamp(1.25rem, 3.5vw, 2rem);
}

.page-about .about-coverage__caption {
  caption-side: top;
  text-align: left;
  padding-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-coverage__table th[scope="row"] {
  color: var(--ink);
  font-weight: 600;
}

.page-about .about-coverage__foot {
  margin: clamp(1.1rem, 3vw, 1.5rem) 0 0;
  max-width: 62ch;
  padding-left: 0.95rem;
  border-left: 3px solid var(--cyan);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__head {
  max-width: 64ch;
}

.page-about .about-partners__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.9rem, 2.5vw, 1.4rem);
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .partner-card {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
  min-width: 0;
}

.page-about .partner-card__num {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
}

.page-about .partner-card__label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
}

.page-about .partner-card p {
  margin: 0.2rem 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 赛季报告 ---------- */
.page-about .about-reports .section__title {
  color: var(--paper);
}

.page-about .about-reports .section__lead {
  color: rgba(247, 244, 239, 0.76);
  max-width: 58ch;
}

.page-about .report-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(1.4rem, 4vw, 2.2rem) 0;
  background: rgba(247, 244, 239, 0.22);
  border: 1px solid rgba(247, 244, 239, 0.22);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .report-strip__cell {
  padding: clamp(1.1rem, 3vw, 1.6rem);
  background: var(--slate);
  min-width: 0;
}

.page-about .report-strip__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 3.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .report-strip__label {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--paper);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: clamp(2.25rem, 6vw, 4rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.9rem);
  line-height: 1.05;
  color: var(--ink);
}

.page-about .about-cta__lead {
  margin: 1rem 0 0;
  max-width: 60ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2rem, 5vw, 3.5rem);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }
}

@media (min-width: 1000px) {
  .page-about .about-timeline__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-about .about-duties {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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

  .page-about .about-margin-note {
    transform: none;
  }
}