.page-about {
  display: block;
  background: var(--bx-mist);
  color: var(--bx-ink);
  font-family: var(--bx-font-body);
  overflow-x: hidden;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 5vw, 44px) 0 clamp(44px, 8vw, 92px);
  background:
    radial-gradient(125% 95% at 88% 6%, rgba(31, 122, 76, 0.52), transparent 62%),
    radial-gradient(90% 70% at 4% 96%, rgba(11, 79, 74, 0.42), transparent 66%),
    linear-gradient(158deg, #0E1B2A 0%, #0B1622 58%, #0E1B2A 100%);
  color: var(--bx-on-dark-strong);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -10% -12%;
  background-image:
    repeating-linear-gradient(116deg, rgba(244, 247, 242, 0.055) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(26deg, rgba(200, 255, 61, 0.05) 0 1px, transparent 1px 52px);
  pointer-events: none;
}

.page-about .about-hero__shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__crumb {
  margin-bottom: clamp(18px, 4vw, 34px);
  color: var(--bx-on-dark);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .about-hero__crumb a {
  color: var(--bx-on-dark-strong);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, 0.45);
}

.page-about .about-hero__crumb a:hover,
.page-about .about-hero__crumb a:focus-visible {
  color: var(--bx-lime);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: end;
}

.page-about .about-hero__eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  padding: 5px 12px;
  border: 1px solid rgba(200, 255, 61, 0.4);
  border-radius: var(--bx-pill);
  color: var(--bx-lime);
  font-family: var(--bx-font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-family: var(--bx-font-head);
  font-size: clamp(34px, 7.6vw, 78px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--bx-white);
  text-wrap: balance;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.8;
  color: var(--bx-on-dark);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 30px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--bx-line-dark);
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.page-about .about-hero__fact-num {
  flex: none;
  font-family: var(--bx-font-num);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  color: var(--bx-lime);
  letter-spacing: -0.02em;
}

.page-about .about-hero__fact-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--bx-on-dark);
}

.page-about .about-shot {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--bx-radius-l);
  border: 1px solid var(--bx-line-dark);
  background: var(--bx-ink);
  box-shadow: var(--bx-shadow-l);
}

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

.page-about .about-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(14, 27, 42, 0.5) 1px, transparent 1.5px);
  background-size: 6px 6px;
  opacity: 0.42;
  mix-blend-mode: multiply;
  pointer-events: none;
}

.page-about .about-shot__cap {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
  padding: 4px 10px;
  border-radius: var(--bx-pill);
  background: rgba(14, 27, 42, 0.72);
  color: var(--bx-on-dark-strong);
  font-family: var(--bx-font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-about .about-shot--hero {
  aspect-ratio: 14 / 9;
  border-color: rgba(200, 255, 61, 0.22);
}

.page-about .about-shot--board {
  aspect-ratio: 4 / 3;
}

.page-about .about-shot--team {
  aspect-ratio: 3 / 2;
}

.page-about .about-body {
  padding: clamp(28px, 5vw, 56px) 0 clamp(40px, 7vw, 84px);
}

.page-about .about-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 2px 14px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--bx-line);
  scrollbar-width: thin;
}

.page-about .about-index__title {
  flex: none;
  align-self: center;
  padding-right: 8px;
  font-family: var(--bx-font-num);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bx-slate);
}

.page-about .index-nav__link {
  flex: none;
  padding: 6px 13px;
  border-radius: var(--bx-pill);
  border: 1px solid var(--bx-line);
  background: var(--bx-white);
  color: var(--bx-ink);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--bx-ease), border-color 0.25s var(--bx-ease), background 0.25s var(--bx-ease);
}

.page-about .index-nav__link:hover,
.page-about .index-nav__link:focus-visible {
  border-color: var(--bx-field);
  color: var(--bx-field-deep);
}

.page-about .index-nav__link.is-active {
  background: var(--bx-field);
  border-color: var(--bx-field);
  color: var(--bx-white);
}

.page-about .about-section {
  padding: clamp(34px, 6vw, 70px) 0;
  border-top: 1px solid var(--bx-line);
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: clamp(20px, 4vw, 34px);
}

.page-about .about-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-chapter {
  display: block;
  font-family: var(--bx-font-serif);
  font-size: clamp(30px, 6vw, 54px);
  font-weight: 700;
  line-height: 1;
  color: var(--bx-field);
  opacity: 0.9;
  letter-spacing: -0.03em;
}

.page-about .about-title {
  margin: 0;
  max-width: 26ch;
  font-family: var(--bx-font-serif);
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.28;
  color: var(--bx-ink);
  text-wrap: balance;
}

.page-about .about-lead {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--bx-slate);
}

.page-about .about-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--bx-lime);
  background: var(--bx-white);
  border-radius: 0 var(--bx-radius-s) var(--bx-radius-s) 0;
  box-shadow: var(--bx-shadow-s);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--bx-slate);
}

/* 时间轴 */
.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 4px 0 4px 26px;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--bx-field) 0%, var(--bx-teal) 55%, rgba(200, 255, 61, 0.7) 100%);
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 24px;
}

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

.page-about .timeline__dot {
  position: absolute;
  left: -26px;
  top: 7px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--bx-white);
  border: 2px solid var(--bx-field);
}

.page-about .timeline__dot--lime {
  border-color: var(--bx-field);
  background: var(--bx-lime);
  box-shadow: 0 0 0 5px rgba(200, 255, 61, 0.22);
}

.page-about .timeline__label {
  margin: 0 0 4px;
  font-family: var(--bx-font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--bx-field-deep);
}

.page-about .timeline__text {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bx-ink);
}

/* 年龄阶梯 */
.page-about .axis {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .axis__card {
  position: relative;
  padding: 18px 18px 18px 20px;
  border: 1px solid var(--bx-line);
  border-left: 4px solid var(--bx-field);
  border-radius: var(--bx-radius-s);
  background: var(--bx-white);
  box-shadow: var(--bx-shadow-s);
}

.page-about .axis__card:nth-child(2) { border-left-color: #2E8C58; }
.page-about .axis__card:nth-child(3) { border-left-color: var(--bx-teal); }
.page-about .axis__card:nth-child(4) { border-left-color: #0B4F4A; border-left-width: 6px; }
.page-about .axis__card:nth-child(5) { border-left-color: var(--bx-orange); }
.page-about .axis__card:nth-child(6) { border-left-color: var(--bx-orange-deep); border-left-width: 7px; }

.page-about .axis__age {
  display: block;
  margin-bottom: 8px;
  font-family: var(--bx-font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--bx-field-deep);
  letter-spacing: 0.02em;
}

.page-about .axis__card:nth-child(5) .axis__age,
.page-about .axis__card:nth-child(6) .axis__age {
  color: var(--bx-orange-deep);
}

.page-about .axis__focus {
  margin: 0 0 6px;
  font-family: var(--bx-font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--bx-ink);
}

.page-about .axis__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--bx-slate);
}

/* 教练履历库 */
.page-about .coach-layout {
  display: grid;
  gap: clamp(20px, 4vw, 34px);
}

.page-about .coach-list {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-about .coach-card {
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-s);
  background: var(--bx-white);
  overflow: hidden;
  transition: border-color 0.25s var(--bx-ease), box-shadow 0.25s var(--bx-ease);
}

.page-about .coach-card[open] {
  border-color: var(--bx-field);
  box-shadow: var(--bx-shadow-m);
}

.page-about .coach-card__sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 14.5px;
  color: var(--bx-ink);
}

.page-about .coach-card__sum::-webkit-details-marker {
  display: none;
}

.page-about .coach-card__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--bx-font-num);
  font-size: 18px;
  line-height: 1;
  color: var(--bx-field);
}

.page-about .coach-card[open] .coach-card__sum::after {
  content: "–";
}

.page-about .coach-card__age {
  flex: none;
  padding: 3px 9px;
  border-radius: var(--bx-pill);
  background: var(--bx-ink);
  color: var(--bx-lime);
  font-family: var(--bx-font-num);
  font-size: 12px;
  font-weight: 700;
}

.page-about .coach-card__hint {
  min-width: 0;
  color: var(--bx-slate);
}

.page-about .coach-card__fields {
  margin: 0;
  padding: 4px 16px 16px;
  border-top: 1px solid var(--bx-line-soft);
}

.page-about .coach-card__fields > div {
  display: grid;
  gap: 2px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--bx-line);
}

.page-about .coach-card__fields > div:last-child {
  border-bottom: 0;
}

.page-about .coach-card__fields dt {
  font-family: var(--bx-font-num);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--bx-slate);
}

.page-about .coach-card__fields dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--bx-ink);
}

/* 技术指标 */
.page-about .metric-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--bx-line);
}

.page-about .metric {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--bx-line);
}

.page-about .metric__name {
  position: relative;
  margin: 0;
  padding-left: 16px;
  font-family: var(--bx-font-head);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--bx-ink);
}

.page-about .metric__name::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  background: var(--bx-lime);
  border-radius: 2px;
}

.page-about .metric__how,
.page-about .metric__read {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
}

.page-about .metric__how {
  color: var(--bx-ink);
}

.page-about .metric__read {
  color: var(--bx-slate);
}

/* 团队 */
.page-about .team-layout {
  display: grid;
  gap: clamp(20px, 4vw, 34px);
}

.page-about .team-stats {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  min-width: 0;
}

.page-about .team-card {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-m);
  background: var(--bx-white);
  box-shadow: var(--bx-shadow-s);
}

.page-about .team-card .data-card__label {
  font-family: var(--bx-font-num);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--bx-slate);
}

.page-about .team-card .data-card__value {
  font-family: var(--bx-font-num);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--bx-field-deep);
}

.page-about .team-card .data-card__unit {
  margin-left: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--bx-slate);
}

.page-about .team-card .data-card__note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--bx-slate);
}

/* 合作生态 */
.page-about .partner-grid {
  gap: 16px;
}

.page-about .partner {
  padding: 22px 20px;
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-m);
  background: linear-gradient(180deg, var(--bx-white) 0%, #EDF3EC 100%);
  box-shadow: var(--bx-shadow-s);
}

.page-about .partner__num {
  display: block;
  font-family: var(--bx-font-num);
  font-size: clamp(32px, 6vw, 44px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--bx-field);
  letter-spacing: -0.02em;
}

.page-about .partner__unit {
  margin-left: 3px;
  font-size: 15px;
  color: var(--bx-slate);
}

.page-about .partner__name {
  margin: 10px 0 6px;
  font-family: var(--bx-font-head);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--bx-ink);
}

.page-about .partner__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--bx-slate);
}

.page-about .report-box {
  margin-top: clamp(24px, 4vw, 36px);
}

.page-about .report {
  border: 1px solid var(--bx-line);
  border-radius: var(--bx-radius-m);
  background: var(--bx-white);
  overflow: hidden;
}

.page-about .report__sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .report__sum::-webkit-details-marker {
  display: none;
}

.page-about .report__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--bx-font-num);
  font-size: 18px;
  color: var(--bx-field);
}

.page-about .report[open] .report__sum::after {
  content: "–";
}

.page-about .report__title {
  font-family: var(--bx-font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--bx-ink);
}

.page-about .report__meta {
  padding: 3px 10px;
  border-radius: var(--bx-pill);
  background: var(--bx-ink);
  color: var(--bx-lime);
  font-family: var(--bx-font-num);
  font-size: 12px;
  font-weight: 700;
}

.page-about .report__body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--bx-line-soft);
}

.page-about .report__body p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--bx-slate);
}

/* 结尾行动区 */
.page-about .about-cta {
  margin-top: clamp(28px, 5vw, 48px);
}

.page-about .about-cta__inner {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 48px);
  border-radius: var(--bx-radius-l);
  background:
    radial-gradient(110% 130% at 92% 8%, rgba(31, 122, 76, 0.6), transparent 60%),
    linear-gradient(150deg, #0E1B2A 0%, #0B1622 100%);
  color: var(--bx-on-dark-strong);
}

.page-about .about-cta__inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(118deg, rgba(244, 247, 242, 0.05) 0 1px, transparent 1px 44px);
  pointer-events: none;
}

.page-about .about-cta__title {
  position: relative;
  margin: 0 0 12px;
  font-family: var(--bx-font-serif);
  font-size: clamp(21px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--bx-white);
}

.page-about .about-cta__text {
  position: relative;
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bx-on-dark);
}

.page-about .about-cta__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-cta__actions .btn {
  text-decoration: none;
}

@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 26px;
  }

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

  .page-about .metric {
    grid-template-columns: minmax(150px, 210px) minmax(0, 1fr);
    align-items: start;
    gap: 6px 26px;
  }

  .page-about .metric__name {
    grid-row: span 2;
    padding-top: 2px;
  }

  .page-about .metric__how,
  .page-about .metric__read {
    grid-column: 2;
  }

  .page-about .coach-card__fields > div {
    grid-template-columns: minmax(120px, 160px) minmax(0, 1fr);
    gap: 4px 16px;
    align-items: baseline;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .coach-layout {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }

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

  .page-about .coach-card:first-child {
    grid-column: 1 / -1;
  }

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

  .page-about .about-shot--team {
    height: 100%;
    aspect-ratio: auto;
    min-height: 320px;
  }

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

  .page-about .axis__card {
    margin-left: calc(var(--step) * 14px);
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-about .about-index {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 3px;
    position: sticky;
    top: 108px;
    overflow: visible;
    padding: 0;
    margin: 0;
    border-bottom: 0;
    border-left: 1px solid var(--bx-line);
  }

  .page-about .about-index .index-nav__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    margin-left: -1px;
    padding: 8px 12px;
    white-space: normal;
    font-size: 13.5px;
    color: var(--bx-slate);
  }

  .page-about .about-index .index-nav__link:hover,
  .page-about .about-index .index-nav__link:focus-visible {
    color: var(--bx-field-deep);
    border-left-color: var(--bx-sprout);
  }

  .page-about .about-index .index-nav__link.is-active {
    color: var(--bx-field-deep);
    border-left-color: var(--bx-lime);
    background: transparent;
    font-weight: 600;
  }

  .page-about .about-index__title {
    padding: 0 12px 12px;
  }

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

  .page-about .about-head {
    grid-template-columns: 76px minmax(0, 1fr);
    column-gap: 18px;
    align-items: start;
  }

  .page-about .about-chapter {
    grid-row: span 3;
    padding-top: 2px;
  }

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

  .page-about .axis__card {
    margin-left: calc(var(--step) * 22px);
    margin-top: calc(var(--step) * 4px);
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-title {
    font-size: 34px;
  }
}
<<<END>>>

.page-about {
  --step: 1rem;
}