.page-about {
  --about-gap: clamp(24px, 4vw, 48px);
  --about-rail-x: 4px;
  display: block;
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2.6vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-lede {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5.5vw, 68px) 0 clamp(32px, 5vw, 60px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-lede::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(620px, 80vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(184, 255, 60, 0.16), rgba(184, 255, 60, 0) 62%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-lede__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 7.4vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.005em;
  margin: 14px 0 0;
  max-width: 17ch;
  color: var(--mist);
}

.page-about .about-lede__lead {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--gray);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-facts__item {
  background: var(--charcoal);
  padding: 16px 16px 18px;
}

.page-about .about-facts dt {
  margin: 0 0 9px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

.page-about .about-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 4.4vw, 38px);
  line-height: 1.05;
  color: var(--lime);
  word-break: break-word;
}

.page-about .about-facts__item:nth-child(4) dd {
  color: var(--teal);
}

@media (min-width: 720px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-facts__item {
    padding: 20px 20px 22px;
  }
}

/* ---------- 章节通用 ---------- */
.page-about .section {
  padding: clamp(40px, 6.5vw, 88px) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-story__head {
  max-width: 720px;
}

.page-about .section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(25px, 4.4vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.004em;
  margin: 12px 0 0;
  color: var(--mist);
}

.page-about .section__lead {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .label-tag {
  margin: 0;
}

/* ---------- 01 我们做什么 ---------- */
.page-about .about-what__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-what__copy p {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .about-what__copy p a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 255, 60, 0.45);
}

.page-about .about-what__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--graphite);
}

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

.page-about .about-what__media .media-frame__caption {
  margin: 0;
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--gray);
  border-top: 1px solid var(--line);
}

.page-about .about-lines {
  list-style: none;
  margin: clamp(24px, 3.5vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-lines__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.3s var(--ease);
}

.page-about .about-lines__item:hover {
  background: var(--charcoal);
}

.page-about .about-lines__num {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-about .about-lines__item h3 {
  margin: 0 0 7px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--mist);
}

.page-about .about-lines__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--gray);
}

@media (min-width: 980px) {
  .page-about .about-what__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

/* ---------- 02 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  position: relative;
  margin: clamp(30px, 4.5vw, 52px) 0 0;
  padding: 0 0 0 28px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: var(--about-rail-x);
  top: 6px;
  bottom: 30px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, var(--line) 58%, rgba(38, 50, 48, 0) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: clamp(26px, 4vw, 44px);
  outline: none;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 5px;
  width: 10px;
  height: 10px;
  background: var(--lime);
}

.page-about .about-timeline__item--version::before {
  background: var(--orange);
}

.page-about .about-timeline__meta {
  margin: 0 0 9px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

.page-about .about-timeline__item--version .about-timeline__meta {
  color: var(--orange);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.28;
  color: var(--mist);
}

.page-about .about-timeline__item > p {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .about-timeline__more {
  margin: 12px 0 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  border-left: 2px solid var(--line);
  padding-left: 14px;
}

.page-about .about-timeline__more a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 255, 60, 0.4);
}

@media (min-width: 1024px) {
  .page-about .about-timeline__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-left: 0;
    border-left-color: transparent;
    transition: max-height 0.38s var(--ease), opacity 0.3s var(--ease),
      padding-left 0.3s var(--ease), border-color 0.3s var(--ease);
  }
  .page-about .about-timeline__item:hover .about-timeline__more,
  .page-about .about-timeline__item:focus-within .about-timeline__more,
  .page-about .about-timeline__item:focus .about-timeline__more {
    max-height: 320px;
    opacity: 1;
    padding-left: 14px;
    border-left-color: var(--lime);
  }
}

.page-about .about-story__media {
  position: relative;
  margin: clamp(30px, 4.5vw, 52px) 0 0;
  border: 1px solid var(--line);
  background: var(--graphite);
}

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

/* ---------- 03 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-team__bars {
  display: grid;
  gap: 22px;
}

.page-about .about-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
}

.page-about .about-bar__name {
  font-size: 15px;
  font-weight: 500;
  color: var(--mist);
}

.page-about .about-bar__val {
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-about .about-bar__track {
  position: relative;
  height: 14px;
  background: var(--charcoal);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  background: var(--lime);
}

.page-about .about-bar--video .about-bar__fill {
  background: var(--teal);
}

.page-about .about-bar--edit .about-bar__fill {
  background: var(--gray);
}

.page-about .about-bar--data .about-bar__fill {
  width: 34.6%;
}

.page-about .about-bar--video .about-bar__fill {
  width: 26.9%;
}

.page-about .about-bar--edit .about-bar__fill {
  width: 38.5%;
}

.page-about .about-bar__note {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--gray);
}

.page-about .about-team__aside {
  padding: 20px 20px 22px;
  background: var(--charcoal);
  border: 1px solid var(--line);
  border-left: 2px solid var(--lime);
}

.page-about .about-team__aside p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-team__aside p:last-child {
  margin-bottom: 0;
  color: var(--gray);
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
    gap: clamp(32px, 5vw, 64px);
  }
}

/* ---------- 04 流程 ---------- */
.page-about .about-flow {
  list-style: none;
  display: grid;
  gap: 20px;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-about .about-flow__step {
  position: relative;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--lime);
  transition: background-color 0.3s var(--ease);
}

.page-about .about-flow__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gray);
}

.page-about .about-flow__step h3 {
  margin: 10px 0 9px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.3;
  color: var(--mist);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

@media (min-width: 900px) {
  .page-about .about-flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0 22px;
  }
  .page-about .about-flow__step:hover::before {
    background: var(--orange);
  }
}

/* ---------- 05 覆盖范围 ---------- */
.page-about .about-coverage__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-coverage__copy p {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .about-sports {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-sports li {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
  background: var(--graphite);
  border: 1px solid var(--line);
  padding: 7px 12px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-sports li:hover {
  color: var(--lime);
  border-color: var(--lime);
}

.page-about .about-sports__more {
  color: var(--gray) !important;
  border-style: dashed !important;
}

.page-about .about-dims {
  margin: 26px 0 0;
  padding: 18px 18px 20px;
  background: var(--charcoal);
  border: 1px solid var(--line);
}

.page-about .about-dims__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-about .about-dims__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-dims__list li {
  padding: 10px 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--gray);
  border-top: 1px solid var(--line);
}

.page-about .about-dims__list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-dims__list li span {
  display: inline-block;
  min-width: 56px;
  margin-right: 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-about .about-coverage__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--graphite);
}

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

.page-about .about-coverage__media .media-frame__caption {
  margin: 0;
  padding: 10px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--gray);
  border-top: 1px solid var(--line);
}

@media (min-width: 960px) {
  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: clamp(32px, 5vw, 64px);
  }
}

/* ---------- 06 联系 ---------- */
.page-about .about-reach__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-reach__copy p {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--gray);
}

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

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

.page-about .about-contact__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-contact__key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

.page-about .about-contact__val {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--mist);
  word-break: break-word;
}

@media (min-width: 760px) {
  .page-about .about-contact__row {
    grid-template-columns: 130px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 940px) {
  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 5vw, 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
}