.page-about {
  --about-axis-w: 168px;
  position: relative;
  padding-block: clamp(18px, 3vw, 34px) clamp(56px, 9vw, 118px);
}

.page-about .about-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(36, 245, 192, .34);
  transition: border-color .18s ease, color .18s ease;
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--bright);
  border-bottom-color: var(--cyan);
}

/* ---------- 左右分屏：左侧刻度 + 右侧叙述 ---------- */

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-axis {
  min-width: 0;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-axis__cap {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--muted);
}

.page-about .about-axis__cap--now {
  margin-top: 6px;
  color: var(--sand);
}

.page-about .about-axis__list {
  display: flex;
  gap: 8px;
  margin: 10px 0 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-axis__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-about .about-axis__idx {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-about .about-axis__link:hover,
.page-about .about-axis__link:focus-visible {
  color: var(--bright);
  border-color: var(--line);
  background: var(--ink-800);
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-axis-w) minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 68px);
    align-items: start;
  }

  .page-about .about-axis {
    position: sticky;
    top: calc(var(--deck-h) + 26px);
    margin-bottom: 0;
  }

  .page-about .about-axis__list {
    position: relative;
    flex-direction: column;
    gap: 0;
    margin-top: 14px;
    padding: 0;
    overflow: visible;
  }

  .page-about .about-axis__list::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 14px;
    bottom: 14px;
    width: 1px;
    background: linear-gradient(180deg, var(--cyan) 0%, var(--line) 40%, var(--line) 100%);
  }

  .page-about .about-axis__link {
    display: flex;
    width: 100%;
    position: relative;
    padding: 10px 0 10px 24px;
    border-color: transparent;
    border-radius: 0;
    background: none;
    white-space: normal;
  }

  .page-about .about-axis__link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 11px;
    height: 11px;
    margin-top: -6px;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: var(--ink-900);
    transition: border-color .18s ease, background-color .18s ease, box-shadow .18s ease;
  }

  .page-about .about-axis__link:hover,
  .page-about .about-axis__link:focus-visible {
    color: var(--bright);
    background: none;
    border-color: transparent;
  }

  .page-about .about-axis__link:hover::before,
  .page-about .about-axis__link:focus-visible::before {
    border-color: var(--cyan);
    background: var(--cyan);
    box-shadow: 0 0 0 4px rgba(36, 245, 192, .16);
  }

  .page-about .about-axis__cap--now {
    margin-top: 10px;
  }
}

.page-about .about-flow {
  min-width: 0;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-bottom: clamp(30px, 4.5vw, 58px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 5.6vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--bright);
  max-width: 15ch;
}

.page-about .about-hero__lead {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: clamp(1rem, 1.25vw, 1.125rem);
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-hero__facts li {
  background: var(--ink-800);
  padding: 18px;
}

.page-about .about-hero__facts b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  line-height: 1.15;
  letter-spacing: .01em;
  color: var(--cyan);
}

.page-about .about-hero__facts span {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

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

/* ---------- 通用段落 ---------- */

.page-about .about-sec {
  position: relative;
  padding-block: clamp(34px, 5.5vw, 72px);
  border-top: 1px solid var(--line);
}

.page-about .about-sec[id] {
  scroll-margin-top: calc(var(--deck-h) + 26px);
}

.page-about .about-sec__head {
  max-width: 72ch;
}

.page-about .about-sec__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 2.9vw, 2.25rem);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--bright);
}

.page-about .about-prose {
  margin-top: clamp(18px, 2.4vw, 28px);
}

.page-about .about-prose p {
  margin: 0 0 1.05em;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.88;
  color: var(--text);
}

.page-about .about-prose p:last-child {
  margin-bottom: 0;
}

/* ---------- 图文错位块 ---------- */

.page-about .about-block {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
  margin-top: clamp(22px, 3vw, 36px);
}

.page-about .about-block__text {
  margin-top: 0;
}

.page-about .about-block__media {
  margin: 0;
  background: var(--ink-800);
}

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

.page-about .about-block__media .media-frame__caption {
  display: block;
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

@media (min-width: 880px) {
  .page-about .about-block {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-block__media {
    margin-top: clamp(14px, 2.4vw, 38px);
  }

  .page-about .about-block--flip .about-block__media {
    grid-column: 1;
    grid-row: 1;
    margin-top: clamp(20px, 3.4vw, 54px);
  }

  .page-about .about-block--flip .about-block__text {
    grid-column: 2;
    grid-row: 1;
    margin-top: 0;
  }
}

/* ---------- 地域横幅 ---------- */

.page-about .about-band {
  margin: clamp(22px, 3vw, 36px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-about .about-band__cap {
  display: block;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

@media (min-width: 780px) {
  .page-about .about-band img {
    aspect-ratio: 16 / 7;
  }
}

/* ---------- 校订流程节点 ---------- */

.page-about .flow {
  display: grid;
  gap: 0;
  margin: clamp(24px, 3vw, 38px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .flow__item {
  position: relative;
  padding: 26px 8px 26px 26px;
  border-bottom: 1px solid var(--line);
}

.page-about .flow__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 32px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--orange);
  background: var(--ink-900);
}

.page-about .flow__item::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 41px;
  bottom: -1px;
  width: 1px;
  background: linear-gradient(180deg, rgba(255, 138, 43, .5), rgba(255, 138, 43, .06));
}

.page-about .flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .flow__title {
  position: relative;
  display: inline-block;
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--bright);
  cursor: default;
}

.page-about .flow__title::after {
  content: attr(data-tip);
  position: absolute;
  left: 0;
  bottom: calc(100% + 10px);
  width: max-content;
  max-width: min(260px, 74vw);
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--ink-800);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0;
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  z-index: 3;
  transition: opacity .18s ease, transform .18s ease;
}

.page-about .flow__title:hover::after,
.page-about .flow__item:hover .flow__title::after,
.page-about .flow__item:focus-within .flow__title::after {
  opacity: 1;
  transform: translateY(0);
}

.page-about .flow__desc {
  margin: 10px 0 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 880px) {
  .page-about .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 0;
  }

  .page-about .flow__item {
    padding: 40px 30px 0 0;
    border-bottom: 0;
    border-top: 1px solid var(--line);
  }

  .page-about .flow__item::before {
    left: 0;
    top: -5px;
    width: 9px;
    height: 9px;
  }

  .page-about .flow__item::after {
    left: 12px;
    top: -1px;
    bottom: auto;
    right: 0;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, rgba(255, 138, 43, .55), rgba(255, 138, 43, .06));
  }

  .page-about .flow__item:last-child::after {
    display: none;
  }
}

/* ---------- 团队分工 ---------- */

.page-about .crew-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .crew-tile {
  background: var(--ink-800);
  padding: 20px 18px;
}

.page-about .crew-tile__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--bright);
}

.page-about .crew-tile__label {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
}

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

.page-about .league-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .league-tags li {
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

/* ---------- 教练档案 ---------- */

.page-about .coach-split {
  display: grid;
  gap: clamp(18px, 2.6vw, 32px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .coach-figure {
  position: relative;
  overflow: hidden;
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
}

.page-about .coach-figure::after {
  content: "";
  position: absolute;
  right: -46px;
  bottom: -46px;
  width: 168px;
  height: 168px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(36, 245, 192, .16), transparent 66%);
  pointer-events: none;
}

.page-about .coach-figure__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 6vw, 3.5rem);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--cyan);
}

.page-about .coach-figure__label {
  display: block;
  margin-top: 14px;
  max-width: 20ch;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

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

.page-about .coach-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .coach-list strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--bright);
}

.page-about .coach-list span {
  display: block;
  margin-top: 7px;
  max-width: 50ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 820px) {
  .page-about .coach-split {
    grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr);
    align-items: start;
  }
}

/* ---------- 合作生态 ---------- */

.page-about .filter-bar {
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-about .coop-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .coop {
  background: var(--ink-800);
  padding: 22px 20px;
}

.page-about .coop__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--bright);
}

.page-about .coop__text {
  margin: 9px 0 0;
  max-width: 42ch;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-about .coop-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 结尾行动区 ---------- */

.page-about .about-cta {
  margin-top: clamp(36px, 5vw, 68px);
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(36, 245, 192, .10), transparent 58%),
    radial-gradient(90% 120% at 0% 100%, rgba(255, 138, 43, .08), transparent 60%),
    var(--ink-800);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--bright);
}

.page-about .about-cta__text {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-axis__link,
  .page-about .about-axis__link::before,
  .page-about .flow__title::after {
    transition: none;
  }
}