.page-about {
  --about-line: rgba(198, 207, 212, 0.9);
  --about-gap: clamp(22px, 4vw, 48px);
  background: var(--jn-paper);
  color: var(--jn-ink);
}

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

/* ---------- 面包屑 ---------- */
.page-about .about-topbar {
  padding-top: clamp(14px, 2.6vw, 26px);
}

.page-about .jn-breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--jn-font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .jn-breadcrumb-item + .jn-breadcrumb-item::before {
  content: "›";
  margin-right: 6px;
  color: var(--jn-flame);
}

.page-about .jn-breadcrumb-link {
  color: var(--jn-jade-deep);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.page-about .jn-breadcrumb-link:hover,
.page-about .jn-breadcrumb-link:focus-visible {
  border-bottom-color: var(--jn-flame);
}

.page-about .jn-breadcrumb-item span[aria-current] {
  color: var(--jn-ink);
  font-weight: 700;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(22px, 4.6vw, 54px) 0 clamp(32px, 5vw, 64px);
}

.page-about .about-hero-grid {
  display: grid;
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  padding: 6px 12px;
  font-family: var(--jn-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--jn-jade-deep);
  background: var(--jn-jade-pale);
  border: 2px solid var(--jn-ink);
}

.page-about .about-kicker-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--jn-flame);
  box-shadow: 0 0 0 3px rgba(255, 90, 43, 0.25);
}

.page-about .about-h1 {
  margin: 0 0 20px;
  font-family: var(--jn-font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 60px);
  line-height: 1.07;
  letter-spacing: -0.02em;
  max-width: 13em;
}

.page-about .about-h1 strong {
  font-weight: 900;
  background: linear-gradient(transparent 62%, rgba(255, 90, 43, 0.42) 62%);
  padding: 0 0.06em;
}

.page-about .about-lede {
  margin: 0 0 26px;
  max-width: 34em;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

.page-about .about-figure-cap {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--jn-jade-deep);
}

.page-about .about-figure-cap--onDark {
  color: var(--jn-silver);
}

/* ---------- 首屏数据条 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(28px, 4vw, 46px);
  background: var(--jn-ink);
  border: var(--jn-border);
  box-shadow: var(--jn-shadow-hard);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--jn-paper);
}

.page-about .about-stat-num {
  font-family: var(--jn-font-mono);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--jn-flame);
}

.page-about .about-stat-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--jn-jade-deep);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  position: relative;
  padding: clamp(40px, 7vw, 88px) 0;
  border-top: var(--jn-border);
}

.page-about .about-chapter-inner {
  display: grid;
  gap: 16px;
}

.page-about .about-chapter-rail {
  position: relative;
}

.page-about .about-index-num {
  display: block;
  font-family: var(--jn-font-display);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1;
  color: var(--jn-flame);
}

.page-about .about-chapter-body {
  max-width: 62ch;
}

.page-about .about-chapter-body--wide {
  max-width: none;
}

.page-about .about-chapter-body .jn-title {
  margin: 8px 0 16px;
  font-family: var(--jn-font-display);
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
}

.page-about .about-text {
  margin: 0 0 16px;
  max-width: 66ch;
  font-size: 17px;
  line-height: 1.8;
}

.page-about .about-text--tight {
  font-size: 15.5px;
  margin-bottom: 10px;
}

/* ---------- 01 品牌自述 ---------- */
.page-about .about-quote {
  margin: 26px 0 0;
  padding: 18px 20px;
  background: var(--jn-jade-pale);
  border: var(--jn-border);
  border-left: 8px solid var(--jn-flame);
  box-shadow: var(--jn-shadow-jade);
}

.page-about .about-quote p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--jn-jade-deep);
}

/* ---------- 02 赛季刻度带 ---------- */
.page-about .about-chapter--seasons {
  background: var(--jn-jade-pale);
}

.page-about .about-seasons-wrap {
  padding-bottom: 0;
}

.page-about .about-seasons {
  position: relative;
  display: grid;
  gap: 18px;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-seasons::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--jn-silver);
}

.page-about .about-season {
  position: relative;
  padding-left: 30px;
}

.page-about .about-season-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--jn-gold);
  border: 3px solid var(--jn-ink);
}

.page-about .about-season-num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--jn-wine);
}

.page-about .about-season-name {
  display: block;
  margin-top: 2px;
  font-family: var(--jn-font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-about .about-season-tip {
  display: block;
  margin-top: 10px;
  padding-left: 10px;
  border-left: 3px solid var(--jn-flame);
  font-size: 14px;
  line-height: 1.72;
  color: var(--jn-jade-deep);
}

/* ---------- 03 团队三条线 ---------- */
.page-about .about-team {
  display: grid;
  gap: 18px;
  margin: 26px 0 0;
}

.page-about .about-team-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--jn-paper);
  border: var(--jn-border);
  box-shadow: var(--jn-shadow-hard);
}

.page-about .about-tag {
  align-self: flex-start;
  padding: 4px 10px;
  font-family: var(--jn-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  border: 2px solid var(--jn-ink);
}

.page-about .about-tag--wine {
  background: var(--jn-wine);
  color: var(--jn-paper);
}

.page-about .about-tag--jade {
  background: var(--jn-jade);
  color: var(--jn-paper);
}

.page-about .about-team-role {
  margin: 0;
  font-family: var(--jn-font-display);
  font-size: 21px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-about .about-team-gain {
  margin: 0;
  padding-top: 10px;
  border-top: 2px dashed var(--jn-silver);
  font-size: 14px;
  line-height: 1.7;
  color: var(--jn-jade-deep);
}

.page-about .about-team-note {
  margin: 24px 0 0;
  padding: 14px 18px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--jn-jade-deep);
  background: var(--jn-jade-pale);
  border-left: 8px solid var(--jn-jade);
}

/* ---------- 04 比赛日夜班 ---------- */
.page-about .about-chapter--night {
  background: var(--jn-night);
  color: var(--jn-paper);
}

.page-about .about-chapter--night .jn-kicker {
  color: var(--jn-gold);
  border-color: var(--jn-gold);
  background: transparent;
}

.page-about .about-chapter--night .jn-title {
  color: var(--jn-paper);
}

.page-about .about-chapter--night .about-index-num {
  color: var(--jn-gold);
}

.page-about .about-chapter--night .about-text {
  color: rgba(246, 244, 238, 0.8);
}

.page-about .about-duty-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: 26px;
}

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

.page-about .about-duty-step {
  position: relative;
  padding-left: 28px;
}

.page-about .about-duty-step::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  bottom: -20px;
  width: 2px;
  background: rgba(198, 207, 212, 0.35);
}

.page-about .about-duty-step:last-child::before {
  display: none;
}

.page-about .about-duty-step::after {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--jn-flame);
}

.page-about .about-duty-time {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--jn-gold);
}

.page-about .about-duty-title {
  margin: 0 0 6px;
  font-family: var(--jn-font-display);
  font-size: 19px;
  font-weight: 900;
  color: var(--jn-paper);
}

.page-about .about-duty-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(246, 244, 238, 0.78);
}

.page-about .about-duty-figure {
  margin: 0;
}

/* ---------- 05 数据校验 ---------- */
.page-about .about-verify {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  border-top: 3px solid var(--jn-ink);
}

.page-about .about-verify-row {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 2px solid var(--jn-ink);
}

.page-about .about-verify-key {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--jn-wine);
}

.page-about .about-verify-val {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
}

/* ---------- 06 用户与地域 ---------- */
.page-about .about-chapter--region {
  background: var(--jn-jade-pale);
}

.page-about .about-region-grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  margin-top: 18px;
}

.page-about .about-region-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-region-figure {
  margin: 0;
}

/* ---------- 收尾两栏 ---------- */
.page-about .about-next {
  display: grid;
  gap: var(--about-gap);
}

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

.page-about .about-next-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  color: var(--jn-ink);
  text-decoration: none;
  background: var(--jn-paper);
  border: var(--jn-border);
  box-shadow: var(--jn-shadow-hard);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.page-about .about-next-link:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 rgba(18, 24, 28, 0.9);
}

.page-about .about-next-link:focus-visible {
  outline: 2px solid var(--jn-gold);
  outline-offset: 3px;
}

.page-about .about-next-title {
  font-family: var(--jn-font-display);
  font-size: 19px;
  font-weight: 900;
}

.page-about .about-next-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--jn-jade-deep);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-verify-row {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-about .about-duty-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-region-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }

  .page-about .about-stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-chapter-inner {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
  }

  .page-about .about-index-num {
    writing-mode: vertical-rl;
    text-orientation: upright;
    letter-spacing: 0.14em;
    font-size: 48px;
  }

  .page-about .about-seasons-wrap {
    padding-bottom: 120px;
  }

  .page-about .about-seasons {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 10px;
    padding-top: 28px;
  }

  .page-about .about-seasons::before {
    left: 0;
    right: 0;
    top: 7px;
    bottom: auto;
    width: auto;
    height: 3px;
    background: var(--jn-silver);
  }

  .page-about .about-season {
    padding-left: 0;
  }

  .page-about .about-season-dot {
    top: 0;
    left: 0;
  }

  .page-about .about-season-tip {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    z-index: 5;
    width: min(240px, 100%);
    margin: 0;
    padding: 12px 14px;
    background: var(--jn-paper);
    border: var(--jn-border);
    border-left: var(--jn-border);
    box-shadow: var(--jn-shadow-hard);
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity 200ms ease-out, transform 200ms ease-out, visibility 200ms;
  }

  .page-about .about-season:hover .about-season-tip,
  .page-about .about-season:focus .about-season-tip,
  .page-about .about-season:focus-within .about-season-tip {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .page-about .about-next {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-season-tip,
  .page-about .about-next-link {
    transition: none !important;
    transform: none !important;
  }
}