.page-about {
  --about-muted: #9FB2C8;
  --about-hair: rgba(46, 74, 102, .8);
  --about-hair-soft: rgba(46, 74, 102, .45);
  color: var(--mist);
}

/* 面包屑 */
.page-about .breadcrumbs {
  padding: clamp(18px, 2.6vw, 30px) 0 0;
}
.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .breadcrumbs li {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--about-muted);
}
.page-about .breadcrumbs li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--line);
}
.page-about .breadcrumbs a {
  color: var(--about-muted);
  text-decoration: none;
  transition: color .25s var(--ease);
}
.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--cyan);
}
.page-about .breadcrumbs li[aria-current="page"] {
  color: var(--sand);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(26px, 4vw, 54px) 0 clamp(44px, 6vw, 84px);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -220px -14% auto -14%;
  height: 680px;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(56% 76% at 18% 8%, rgba(35, 211, 196, .16), transparent 70%),
    radial-gradient(50% 70% at 86% 18%, rgba(232, 180, 74, .17), transparent 72%);
}
.page-about .about-hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}
.page-about .about-hero-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .22em;
  color: var(--cyan);
}
.page-about .about-display {
  margin: clamp(14px, 2vw, 24px) 0 0;
  font-size: clamp(2.15rem, 6.4vw, 5rem);
  font-weight: 200;
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--mist);
}
.page-about .about-hero-lead {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.9;
  color: var(--about-muted);
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

/* 图片容器 */
.page-about .about-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-lg);
  background: var(--panel);
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-figure figcaption {
  padding: 12px 20px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--about-muted);
  border-top: 1px solid var(--about-hair-soft);
}
.page-about .about-figure--hero {
  border-color: rgba(232, 180, 74, .3);
}
.page-about .about-figure--hero img {
  aspect-ratio: 16 / 10;
}
.page-about .about-chapter-body .about-figure {
  margin-top: clamp(26px, 4vw, 44px);
}
.page-about .about-chapter-body .about-figure img {
  aspect-ratio: 3 / 2;
}

/* 首屏数据条 */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(34px, 5vw, 62px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.page-about .about-stat {
  padding: clamp(16px, 2.2vw, 26px);
  background: rgba(19, 42, 68, .78);
}
.page-about .about-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--gold);
}
.page-about .about-stat-label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--about-muted);
}

/* 章节骨架 */
.page-about .about-chapter {
  scroll-margin-top: 92px;
  padding: clamp(46px, 6vw, 88px) 0;
}
.page-about .about-chapter + .about-chapter {
  border-top: 1px solid var(--about-hair-soft);
}
.page-about .about-chapter-inner {
  display: grid;
  gap: clamp(18px, 3vw, 44px);
}
.page-about .about-chapter-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--cyan);
}
.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 14px;
}
.page-about .about-jump a {
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--about-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--about-hair-soft);
  padding-bottom: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}
.page-about .about-chapter-body {
  min-width: 0;
  max-width: 42em;
}
.page-about .about-chapter--wide .about-chapter-body {
  max-width: none;
}
.page-about .about-h2 {
  margin: 0 0 20px;
  font-size: clamp(1.45rem, 3vw, 2.25rem);
  font-weight: 300;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--mist);
}
.page-about .about-p {
  margin: 0 0 1.05em;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.92;
  color: var(--about-muted);
}
.page-about .about-p:last-child {
  margin-bottom: 0;
}

/* 团队分工 */
.page-about .about-team {
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-hair);
}
.page-about .about-team-row {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 2px;
  border-bottom: 1px solid var(--about-hair-soft);
  transition: background-color .3s var(--ease);
}
.page-about .about-team-row:hover,
.page-about .about-team-row:focus-within {
  background: rgba(35, 211, 196, .06);
}
.page-about .about-team-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}
.page-about .about-team-name {
  font-size: 16px;
  font-weight: 500;
  color: var(--sand);
}
.page-about .about-team-desc {
  grid-column: 2 / -1;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-muted);
}

/* 赛季年轮 / 时间轴 */
.page-about .about-filters {
  margin: clamp(22px, 3vw, 32px) 0 0;
}
.page-about .filter-status {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--about-muted);
}
.page-about .filter-status:empty {
  margin: 0;
}
.page-about .about-track {
  position: relative;
  margin: clamp(26px, 3.6vw, 42px) 0 0;
  padding: 0 0 0 30px;
  list-style: none;
}
.page-about .about-track::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold), var(--cyan) 54%, rgba(46, 74, 102, .25));
}
.page-about .about-node {
  position: relative;
  padding: 0 0 clamp(24px, 3.4vw, 34px);
}
.page-about .about-node:last-child {
  padding-bottom: 0;
}
.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--ink);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.page-about .about-node:hover::before,
.page-about .about-node:focus-within::before {
  border-color: var(--cyan);
  box-shadow: 0 0 0 5px rgba(35, 211, 196, .15);
}
.page-about .about-node-season {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold);
}
.page-about .about-node:hover .about-node-season {
  color: var(--sand);
}
.page-about .about-node-title {
  margin: 6px 0 8px;
  font-size: clamp(1.08rem, 2vw, 1.4rem);
  font-weight: 400;
  line-height: 1.4;
  color: var(--mist);
}
.page-about .about-node-text {
  margin: 0;
  max-width: 42em;
  font-size: 14.8px;
  line-height: 1.85;
  color: var(--about-muted);
}

/* 协作生态 */
.page-about .about-partner-panel {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
  margin-top: clamp(26px, 3.6vw, 40px);
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(150deg, rgba(35, 211, 196, .08), transparent 58%),
    rgba(19, 42, 68, .72);
}
.page-about .about-partner-figure {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.page-about .about-partner-num {
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  font-weight: 200;
  line-height: 1;
  color: var(--gold);
}
.page-about .about-partner-unit {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--about-muted);
}
.page-about .about-partner-desc {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-muted);
}
.page-about .about-honors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-honors li {
  padding: 7px 16px;
  border: 1px solid rgba(232, 180, 74, .45);
  border-radius: var(--radius-pill);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--sand);
}

/* 长期服务 */
.page-about .about-scale {
  display: grid;
  gap: 1px;
  margin: clamp(26px, 3.6vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-hair-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.page-about .about-scale-item {
  padding: clamp(18px, 2.6vw, 26px);
  background: rgba(19, 42, 68, .55);
}
.page-about .about-scale-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--mist);
}
.page-about .about-scale-unit {
  margin-left: 8px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
}
.page-about .about-scale-label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--about-muted);
}

/* 结尾入口 */
.page-about .about-cta-wrap {
  padding: 0 0 clamp(50px, 7vw, 96px);
}
.page-about .about-cta {
  padding: clamp(28px, 5vw, 58px);
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 140% at 10% 0%, rgba(35, 211, 196, .14), transparent 62%),
    radial-gradient(90% 120% at 92% 100%, rgba(255, 122, 60, .12), transparent 64%),
    linear-gradient(160deg, #16314f 0%, #0d2035 100%);
}
.page-about .about-cta-title {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 2.1rem);
  font-weight: 300;
  line-height: 1.32;
  color: var(--mist);
}
.page-about .about-cta-text {
  margin: 16px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.88;
  color: var(--about-muted);
}
.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

/* 断点 */
@media (min-width: 640px) {
  .page-about .about-team-row {
    grid-template-columns: 3rem 9.5rem minmax(0, 1fr);
    align-items: baseline;
  }
  .page-about .about-team-desc {
    grid-column: 3 / -1;
  }
}

@media (min-width: 780px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-scale {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-partner-panel {
    grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
  }
  .page-about .about-chapter-inner {
    grid-template-columns: 13rem minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-chapter-tag {
    position: sticky;
    top: 96px;
  }
  .page-about .about-track {
    padding-left: 38px;
  }
  .page-about .about-track::before {
    left: 8px;
  }
  .page-about .about-node::before {
    left: -38px;
    top: 5px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-display {
    font-size: clamp(3.4rem, 5.6vw, 5.4rem);
  }
}