.page-about {
  --about-hair: rgba(245, 247, 250, 0.1);
  --about-hair-strong: rgba(245, 247, 250, 0.2);
  --about-sticky: 104px;
  overflow-x: clip;
}

/* ---------- 首屏：左窄右宽的文字建筑 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  padding-block: clamp(30px, 6vw, 76px) clamp(28px, 5vw, 52px);
}

.page-about .about-hero__index {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--rb-red);
}

.page-about .about-hero__ord {
  margin: 0;
  font-family: var(--rb-font-num);
  font-size: clamp(52px, 13vw, 88px);
  line-height: 0.82;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px var(--about-hair-strong);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px 14px;
  margin: 4px 0 0;
}

.page-about .about-hero__facts > div {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--rb-line);
}

.page-about .about-hero__facts dt {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--rb-steel);
}

.page-about .about-hero__facts dd {
  margin: 0;
  font-family: var(--rb-font-num);
  font-size: 22px;
  font-weight: 700;
  color: var(--rb-paper);
}

.page-about .about-hero__main .rb-display {
  margin: 0 0 18px;
  max-width: 15ch;
  text-wrap: balance;
}

.page-about .about-hero__main .rb-lead {
  max-width: 34em;
  margin: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-heroFigure {
  margin: 0 auto clamp(44px, 7vw, 88px);
}

.page-about .rb-figure__img img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--rb-radius-sm);
  border: 1px solid var(--rb-line);
}

/* ---------- 章节：左窄目录 + 右宽正文 ---------- */
.page-about .about-chapter {
  border-top: 1px solid var(--rb-line);
  padding-block: clamp(36px, 6vw, 78px);
}

.page-about .about-chapter__inner {
  display: grid;
  gap: clamp(18px, 3vw, 40px);
}

.page-about .about-chapter__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-chapter__num {
  margin: 0;
  font-family: var(--rb-font-num);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--rb-red);
}

.page-about .about-chapter__head .rb-title {
  margin: 0;
  max-width: 20ch;
}

.page-about .about-chapter__body > .rb-body {
  max-width: 34em;
  margin: 0 0 18px;
}

.page-about .about-chapter__body > .rb-body:last-of-type {
  margin-bottom: 0;
}

.page-about .about-chapter__link {
  margin: 22px 0 0;
  font-size: 15px;
}

.page-about .about-chapter__link a {
  color: var(--rb-blue-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(110, 155, 255, 0.35);
}

.page-about .about-chapter__link a:hover,
.page-about .about-chapter__link a:focus-visible {
  border-bottom-color: var(--rb-blue-soft);
}

/* ---------- 两条内容线 ---------- */
.page-about .about-lines {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-about .about-lines__card {
  padding: clamp(18px, 3vw, 26px);
}

.page-about .about-lines__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.82);
}

.page-about .about-projects {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 赛季时间轴 ---------- */
.page-about .about-timelineWrap {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-timelineWrap__label {
  margin: 0 0 14px;
}

.page-about .about-timeline {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__tick {
  position: relative;
  flex: 1 1 58px;
  min-width: 52px;
  padding: 14px 8px 12px 0;
  border-top: 2px solid var(--about-hair-strong);
  font-family: var(--rb-font-num);
  font-size: 12px;
  color: var(--rb-steel);
}

.page-about .about-timeline__tick::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--rb-steel);
}

.page-about .about-timeline__no {
  letter-spacing: 0.02em;
}

.page-about .about-timeline__tick--now {
  border-top-color: var(--rb-cyan);
  color: var(--rb-paper);
}

.page-about .about-timeline__tick--now::before {
  background: var(--rb-cyan);
  box-shadow: 0 0 0 3px rgba(34, 245, 200, 0.18);
}

.page-about .about-timeline__mark {
  display: block;
  margin-top: 4px;
  font-family: var(--rb-font-body);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--rb-cyan);
}

/* ---------- 阵容字段表 ---------- */
.page-about .about-fields {
  margin: 26px 0 0;
  border-top: 1px solid var(--rb-line);
}

.page-about .about-fields__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--rb-line);
}

.page-about .about-fields__row dt {
  font-size: 14px;
  color: var(--rb-steel);
  letter-spacing: 0.02em;
}

.page-about .about-fields__row dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--rb-paper);
}

.page-about .about-fields__row dd .rb-num {
  font-size: 18px;
  color: var(--rb-cyan);
}

.page-about .about-roster__note {
  margin-top: 24px;
}

.page-about .about-roster__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 团队与节奏 ---------- */
.page-about .about-team {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__item {
  padding: 20px 18px;
  background: var(--rb-carbon);
  border: 1px solid var(--rb-line);
  border-radius: var(--rb-radius-sm);
}

.page-about .about-team__num {
  margin: 0 0 6px;
  font-family: var(--rb-font-num);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--rb-blue-soft);
}

.page-about .about-team__name {
  margin: 0 0 8px;
  font-family: var(--rb-font-editorial);
  font-size: 18px;
  font-weight: 600;
  color: var(--rb-paper);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.74);
}

.page-about .about-rhythm {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rb-line);
}

.page-about .about-rhythm__item {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--rb-line);
}

.page-about .about-rhythm__day {
  font-family: var(--rb-font-num);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--rb-amber);
}

.page-about .about-rhythm__what {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(245, 247, 250, 0.86);
}

/* ---------- 本地视角配图 ---------- */
.page-about .about-localFigure {
  margin: clamp(28px, 4vw, 48px) auto 0;
}

/* ---------- 合作横条 ---------- */
.page-about .about-partners {
  border-top: 1px solid var(--rb-line);
  padding-block: clamp(36px, 6vw, 78px) clamp(32px, 5vw, 64px);
  background:
    linear-gradient(180deg, rgba(27, 36, 54, 0.55) 0%, rgba(11, 13, 18, 0) 70%);
}

.page-about .about-band {
  display: grid;
  gap: 1px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--rb-line);
  border-top: 1px solid var(--rb-line);
  border-bottom: 1px solid var(--rb-line);
}

.page-about .about-band__item {
  padding: clamp(20px, 3vw, 30px) var(--rb-gutter);
  background: var(--rb-black);
  transition: background 0.35s var(--rb-ease), transform 0.35s var(--rb-ease);
}

.page-about .about-band__item:hover {
  background: var(--rb-carbon);
}

.page-about .about-band__value {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--rb-steel);
}

.page-about .about-band__value .rb-num {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--rb-red);
  margin-right: 2px;
}

.page-about .about-band__name {
  margin: 0 0 8px;
  font-family: var(--rb-font-editorial);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--rb-paper);
}

.page-about .about-band__detail {
  margin: 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.72);
  transition: color 0.35s var(--rb-ease), transform 0.35s var(--rb-ease);
}

@media (hover: hover) and (min-width: 900px) {
  .page-about .about-band__detail {
    opacity: 0.62;
    transform: translateY(3px);
  }
  .page-about .about-band__item:hover .about-band__detail,
  .page-about .about-band__item:focus-within .about-band__detail {
    opacity: 1;
    transform: translateY(0);
    color: rgba(245, 247, 250, 0.9);
  }
}

.page-about .about-partners__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .about-partners__hint {
  flex: 1 1 260px;
  margin: 0;
  max-width: 34em;
  font-family: var(--rb-font-editorial);
  font-size: 16px;
  line-height: 1.7;
  color: var(--rb-mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-about .about-band__item {
    padding-inline: clamp(20px, 2.4vw, 30px);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 0.32fr) minmax(0, 0.68fr);
    align-items: start;
  }

  .page-about .about-hero__index {
    position: sticky;
    top: var(--about-sticky);
  }

  .page-about .about-hero__facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .page-about .about-hero__facts > div {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
  }

  .page-about .about-chapter__inner {
    grid-template-columns: minmax(0, 0.3fr) minmax(0, 0.7fr);
    align-items: start;
  }

  .page-about .about-chapter__head {
    position: sticky;
    top: var(--about-sticky);
  }

  .page-about .about-timeline__tick {
    padding-left: 6px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 0.28fr) minmax(0, 0.72fr);
  }

  .page-about .about-chapter__inner {
    grid-template-columns: minmax(0, 0.26fr) minmax(0, 0.74fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-band__item,
  .page-about .about-band__detail {
    transition: none;
  }
  .page-about .about-band__detail {
    opacity: 1;
    transform: none;
  }
}