.page-about {
  --about-line: rgba(126, 134, 152, 0.22);
  --about-soft: rgba(126, 134, 152, 0.12);
}

.page-about .about-hero {
  padding-top: clamp(22px, 4vw, 44px);
  padding-bottom: clamp(30px, 5vw, 60px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: end;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(31px, 6vw, 64px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--hu-snow);
  margin: 14px 0 18px;
}

.page-about .about-hero__title .num {
  font-family: var(--font-mono);
  color: var(--hu-cyan);
  font-size: 0.92em;
  letter-spacing: -0.02em;
}

.page-about .about-hero__lede {
  max-width: 64ch;
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.85;
  color: rgba(243, 239, 230, 0.78);
}

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

.page-about .about-hero__media {
  position: relative;
  background: var(--hu-rock);
}

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

.page-about .about-stats {
  list-style: none;
  margin: clamp(30px, 4vw, 54px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-soft);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-stats .stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 6px;
  background: var(--hu-ink);
  padding: 20px 16px;
}

.page-about .about-stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1;
  color: var(--hu-snow);
}

.page-about .about-stats .stat__value--gold {
  background: linear-gradient(120deg, var(--hu-gold), #f0d089);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-stats .stat__unit {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--hu-grey);
}

.page-about .about-stats .stat__label {
  flex-basis: 100%;
  font-size: 13px;
  color: var(--hu-grey);
}

/* 品牌缘起 */
.page-about .about-origin__grid {
  align-items: start;
}

.page-about .about-origin__copy p {
  color: rgba(243, 239, 230, 0.76);
  line-height: 1.85;
  margin: 0 0 18px;
}

.page-about .about-origin__panel {
  background: var(--hu-rock);
  padding: clamp(22px, 2.6vw, 32px);
}

.page-about .about-rules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-rules li {
  position: relative;
  padding-left: 18px;
}

.page-about .about-rules li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--hu-red);
  transform: rotate(45deg);
}

.page-about .about-rules strong {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--hu-snow);
  margin-bottom: 6px;
}

.page-about .about-rules span {
  display: block;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(243, 239, 230, 0.68);
}

/* 时间线 */
.page-about .about-timeline__head {
  max-width: 62ch;
}

.page-about .timeline {
  list-style: none;
  position: relative;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0 0 0 34px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--hu-cyan), rgba(126, 134, 152, 0.26) 55%, var(--hu-red));
}

.page-about .timeline__item {
  position: relative;
  margin-bottom: clamp(20px, 2.8vw, 32px);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 26px;
  width: 10px;
  height: 10px;
  background: var(--hu-cyan);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .timeline__card {
  background: var(--hu-rock);
  padding: 20px 22px 22px;
  border-left: 2px solid rgba(53, 224, 208, 0.26);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .timeline__item:hover .timeline__card,
.page-about .timeline__item:focus-within .timeline__card {
  background: #1c232b;
  border-left-color: var(--hu-cyan);
}

.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-within::before {
  transform: rotate(45deg) scale(1.35);
  box-shadow: 0 0 0 6px rgba(53, 224, 208, 0.14);
}

.page-about .timeline__season {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--hu-gold);
  margin: 0 0 8px;
}

.page-about .timeline__title {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.6vw, 21px);
  line-height: 1.4;
  color: var(--hu-snow);
  margin: 0 0 8px;
}

.page-about .timeline__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(243, 239, 230, 0.7);
}

/* 团队构成 */
.page-about .about-team__grid {
  align-items: start;
}

.page-about .about-team__copy p {
  color: rgba(243, 239, 230, 0.76);
  line-height: 1.85;
  margin: 0 0 18px;
}

.page-about .about-team__media {
  background: var(--hu-rock);
}

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

.page-about .bar-chart {
  margin-top: clamp(28px, 3.4vw, 44px);
  display: grid;
  gap: 18px;
}

.page-about .bar-chart__heading {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--hu-grey);
  margin: 0;
  text-transform: uppercase;
}

.page-about .bar-chart__row {
  display: grid;
  gap: 8px;
}

.page-about .bar-chart__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.page-about .bar-chart__label {
  font-size: 15px;
  color: rgba(243, 239, 230, 0.86);
  transition: color 0.24s var(--ease);
}

.page-about .bar-chart__value {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--hu-cyan);
}

.page-about .bar-chart__track {
  position: relative;
  height: 14px;
  background: var(--about-soft);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.page-about .bar-chart__fill {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  background: linear-gradient(90deg, var(--hu-cyan), var(--hu-blue));
  transition: width 0.6s var(--ease);
}

.page-about .bar-chart__fill--gold {
  background: linear-gradient(90deg, var(--hu-gold), #f0d089);
}

.page-about .bar-chart__fill--moss {
  background: linear-gradient(90deg, var(--hu-moss), #7d9c74);
}

.page-about .bar-chart__row:hover .bar-chart__label {
  color: var(--hu-cyan);
}

/* 流程 */
.page-about .flow {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 3vw, 38px);
}

.page-about .flow__step {
  position: relative;
  background: var(--hu-rock);
  padding: 22px 20px 24px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .flow__step::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 14px;
  width: 26px;
  height: 1px;
  background: var(--hu-clay);
  transform: rotate(-38deg);
  transform-origin: right center;
}

.page-about .flow__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--hu-clay);
  margin: 0;
}

.page-about .flow__title {
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--hu-snow);
  margin: 10px 0 8px;
}

.page-about .flow__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(243, 239, 230, 0.7);
}

.page-about .about-flow__disclosure {
  margin-top: clamp(22px, 2.6vw, 32px);
}

.page-about .about-flow__notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-flow__notes li {
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(243, 239, 230, 0.72);
  padding-left: 16px;
  position: relative;
}

.page-about .about-flow__notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--hu-cyan);
  opacity: 0.8;
}

.page-about .about-flow__notes strong {
  color: var(--hu-snow);
  font-weight: 600;
  margin-right: 8px;
}

/* 教练履历 */
.page-about .about-coach__grid {
  align-items: start;
}

.page-about .about-coach p {
  color: rgba(243, 239, 230, 0.76);
  line-height: 1.85;
  margin: 0;
}

.page-about .about-coach__panel {
  background: var(--hu-rock);
  padding: clamp(22px, 2.4vw, 30px);
  border-top: 2px solid var(--hu-red);
}

.page-about .about-coach__fields {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-coach__field {
  display: grid;
  gap: 4px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--about-line);
}

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

.page-about .about-coach__field dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--hu-cyan);
}

.page-about .about-coach__field dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 239, 230, 0.72);
}

/* 合作 */
.page-about .coop-grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
  margin-top: clamp(24px, 3vw, 38px);
}

.page-about .coop-card {
  position: relative;
  padding: 26px 24px 28px;
  background: var(--hu-rock);
  border-top: 1px solid var(--about-line);
  box-shadow: inset 0 -1px 0 var(--about-soft);
}

.page-about .coop-card--media {
  background: linear-gradient(150deg, rgba(183, 55, 46, 0.24), rgba(23, 28, 34, 0.9) 58%), var(--hu-rock);
}

.page-about .coop-card__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--hu-clay);
  margin: 0 0 12px;
}

.page-about .coop-card__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 1.7vw, 22px);
  color: var(--hu-snow);
  margin: 0 0 10px;
}

.page-about .coop-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(243, 239, 230, 0.72);
}

/* 服务方法 */
.page-about .about-service__grid {
  align-items: start;
}

.page-about .about-service__copy p {
  color: rgba(243, 239, 230, 0.76);
  line-height: 1.85;
  margin: 0 0 8px;
}

.page-about .service-steps {
  list-style: none;
  margin: clamp(22px, 2.6vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
  counter-reset: none;
}

.page-about .service-steps li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--about-soft);
}

.page-about .service-steps li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .service-steps__num {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--hu-cyan);
}

.page-about .service-steps__title {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--hu-snow);
  margin: 0 0 6px;
}

.page-about .service-steps p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(243, 239, 230, 0.7);
}

.page-about .about-service__side {
  display: grid;
  gap: 20px;
}

.page-about .about-service__media {
  background: var(--hu-rock);
}

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

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

/* 结尾 */
.page-about .about-cta__panel {
  position: relative;
  display: grid;
  gap: 22px;
  padding: clamp(26px, 3.4vw, 44px);
  background: linear-gradient(115deg, rgba(232, 180, 74, 0.16), rgba(11, 14, 18, 0.2) 62%), var(--hu-rock);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  overflow: hidden;
}

.page-about .about-cta__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--hu-blue), var(--hu-snow) 25%, var(--hu-red) 50%, var(--hu-moss) 75%, var(--hu-gold));
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-size: clamp(23px, 3vw, 34px);
  line-height: 1.28;
  color: var(--hu-snow);
  margin: 12px 0 10px;
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 239, 230, 0.75);
}

@media (min-width: 720px) {
  .page-about .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .coop-card--media {
    grid-column: 1 / -1;
  }
}

@media (min-width: 780px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .timeline {
    padding-left: 0;
  }

  .page-about .timeline::before {
    left: 50%;
    margin-left: -1px;
  }

  .page-about .timeline__item {
    width: calc(50% - 44px);
  }

  .page-about .timeline__item:nth-child(odd) {
    margin-right: auto;
  }

  .page-about .timeline__item:nth-child(even) {
    margin-left: auto;
  }

  .page-about .timeline__item:nth-child(odd) .timeline__card {
    border-left: 0;
    border-right: 2px solid rgba(53, 224, 208, 0.26);
  }

  .page-about .timeline__item:nth-child(odd):hover .timeline__card,
  .page-about .timeline__item:nth-child(odd):focus-within .timeline__card {
    border-right-color: var(--hu-cyan);
  }

  .page-about .timeline__item:nth-child(odd)::before {
    left: auto;
    right: -53px;
  }

  .page-about .timeline__item:nth-child(even)::before {
    left: -53px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

@media (min-width: 1080px) {
  .page-about .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .coop-card--media {
    grid-column: auto;
  }

  .page-about .bar-chart__row {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: center;
    gap: 20px;
  }

  .page-about .bar-chart__meta {
    display: contents;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .bar-chart__fill,
  .page-about .timeline__card,
  .page-about .timeline__item::before {
    transition: none;
  }

  .page-about .timeline__item:hover::before,
  .page-about .timeline__item:focus-within::before {
    transform: rotate(45deg);
    box-shadow: none;
  }
}

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