/* =========================================================
   page-about · 品牌与赛道
   作用域：.page-about
   ========================================================= */

.page-about {
  --ab-rail-w: clamp(96px, 12vw, 164px);
  --ab-stick: clamp(84px, 11vh, 124px);
  --ab-hair: rgba(46, 242, 208, .34);
  --ab-hair-soft: rgba(143, 163, 191, .22);
  --ab-orange-soft: rgba(255, 107, 44, .16);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(20px, 4vw, 52px) 0 0;
}

.page-about .about-hero__title {
  margin: clamp(14px, 2.2vw, 26px) 0 clamp(28px, 4.5vw, 56px);
  max-width: 16ch;
}

.page-about .about-hero__title-em {
  color: var(--cyan);
  font-style: normal;
  position: relative;
}

.page-about .about-hero__title-em::after {
  content: "";
  display: block;
  height: 2px;
  margin-top: .12em;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--violet) 42%, var(--orange) 100%);
}

.page-about .about-hero__cols {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
  padding-bottom: clamp(28px, 4vw, 56px);
}

@media (min-width: 900px) {
  .page-about .about-hero__cols {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    column-gap: clamp(40px, 7vw, 120px);
  }
}

.page-about .about-hero__lead {
  max-width: 56ch;
  margin: 0;
}

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

@media (min-width: 900px) {
  .page-about .about-hero__stamps {
    justify-content: flex-end;
  }
}

.page-about .about-hero__figure {
  margin: 0;
  border-top: 2px solid var(--cyan);
}

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

/* ---------- 品牌定位 ---------- */
.page-about .about-position {
  border-top: 1px solid var(--ab-hair-soft);
}

.page-about .about-position__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

@media (min-width: 900px) {
  .page-about .about-position__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    column-gap: clamp(48px, 8vw, 140px);
  }
}

.page-about .about-position__aside h2 {
  margin: clamp(12px, 1.8vw, 22px) 0 0;
}

.page-about .about-position__body p {
  margin: 0 0 1.15em;
  max-width: 62ch;
}

.page-about .about-position__body p:last-of-type {
  margin-bottom: clamp(28px, 3.6vw, 44px);
}

.page-about .about-position__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 30px);
  border-top: 1px solid var(--ab-hair-soft);
  padding-top: clamp(20px, 2.6vw, 30px);
}

@media (min-width: 700px) {
  .page-about .about-position__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-position__facts .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 12px;
  border-top: 2px solid var(--cyan);
}

.page-about .about-position__facts .stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--snow);
}

.page-about .about-position__facts .stat__label {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
  line-height: 1.5;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline-section {
  border-top: 1px solid var(--ab-hair-soft);
}

.page-about .about-timeline-section__lead {
  max-width: 56ch;
  margin: clamp(16px, 2vw, 24px) 0 clamp(32px, 5vw, 64px);
}

.page-about .about-timeline__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  margin-bottom: clamp(24px, 3.4vw, 40px);
  scrollbar-width: thin;
}

.page-about .about-timeline__tick {
  flex: 0 0 auto;
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 14px;
  border: 1px solid var(--ab-hair-soft);
  color: var(--mist);
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, background-color .18s ease;
}

.page-about .about-timeline__tick .mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
}

.page-about .about-timeline__tick em {
  font-style: normal;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
  opacity: .8;
}

.page-about .about-timeline__tick:hover,
.page-about .about-timeline__tick:focus-visible {
  border-color: var(--cyan);
  color: var(--snow);
  background: rgba(46, 242, 208, .07);
  outline: none;
}

.page-about .about-timeline__tick:hover em,
.page-about .about-timeline__tick:focus-visible em {
  color: var(--cyan);
}

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

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 52px) clamp(20px, 3vw, 32px);
  border-left: 2px solid var(--ab-hair-soft);
  transition: border-color .2s ease;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--cyan);
  transition: background-color .2s ease, transform .2s ease;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

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

.page-about .about-timeline__item:hover {
  border-left-color: var(--cyan);
}

.page-about .about-timeline__item:hover::before {
  background: var(--orange);
  transform: scale(1.25);
}

.page-about .about-timeline__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .about-timeline__ver {
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: clamp(1.08rem, 1.9vw, 1.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.75;
}

@media (min-width: 900px) {
  .page-about .about-timeline {
    display: grid;
    grid-template-columns: var(--ab-rail-w) minmax(0, 1fr);
    column-gap: clamp(36px, 6vw, 96px);
    align-items: start;
  }

  .page-about .about-timeline__rail {
    position: sticky;
    top: var(--ab-stick);
    flex-direction: column;
    align-self: start;
    overflow: visible;
    padding-bottom: 0;
    margin-bottom: 0;
    gap: 6px;
    border-left: 1px solid var(--ab-hair-soft);
    padding-left: 0;
  }

  .page-about .about-timeline__tick {
    flex: 0 0 auto;
    border: 0;
    border-left: 2px solid transparent;
    padding: 6px 0 6px 14px;
    margin-left: -1px;
  }

  .page-about .about-timeline__tick:hover,
  .page-about .about-timeline__tick:focus-visible {
    border-left-color: var(--cyan);
    background: transparent;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  border-top: 1px solid var(--ab-hair-soft);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(32px, 5vw, 60px);
}

@media (min-width: 980px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    column-gap: clamp(44px, 7vw, 112px);
  }
}

.page-about .about-team__intro h2 {
  margin: clamp(12px, 1.8vw, 22px) 0 clamp(18px, 2.4vw, 28px);
}

.page-about .about-team__intro > p {
  margin: 0 0 clamp(24px, 3vw, 36px);
  max-width: 58ch;
}

.page-about .about-team__figure {
  margin: 0;
  border-left: 2px solid var(--violet);
  padding-left: clamp(10px, 1.6vw, 18px);
}

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

.page-about .about-team__detail {
  display: flex;
  flex-direction: column;
  gap: clamp(28px, 4vw, 46px);
}

.page-about .about-team__flow .h3 {
  margin: 0 0 clamp(16px, 2vw, 22px);
  font-size: clamp(1.1rem, 1.9vw, 1.35rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-about .about-team__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: ab-step;
  border-top: 1px solid var(--ab-hair-soft);
}

.page-about .about-team__step {
  position: relative;
  padding: clamp(16px, 2vw, 22px) 0 clamp(16px, 2vw, 22px) clamp(46px, 6vw, 62px);
  border-bottom: 1px solid var(--ab-hair-soft);
}

.page-about .about-team__step-num {
  position: absolute;
  left: 0;
  top: clamp(16px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--orange);
}

.page-about .about-team__step strong {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--snow);
  letter-spacing: -0.01em;
}

.page-about .about-team__step p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
  max-width: 46ch;
}

.page-about .about-team__cadence {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 2px solid var(--cyan);
}

.page-about .about-team__cadence-row {
  display: grid;
  grid-template-columns: minmax(64px, auto) minmax(0, 1fr);
  gap: clamp(14px, 2vw, 26px);
  padding: clamp(12px, 1.6vw, 18px) 0;
  border-bottom: 1px solid var(--ab-hair-soft);
  align-items: baseline;
}

.page-about .about-team__cadence-row dt {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .about-team__cadence-row dd {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 赛事覆盖 ---------- */
.page-about .about-coverage {
  border-top: 1px solid var(--ab-hair-soft);
}

.page-about .about-coverage__lead {
  max-width: 56ch;
  margin: clamp(16px, 2vw, 22px) 0 clamp(32px, 5vw, 60px);
}

.page-about .about-coverage__grid {
  display: grid;
  gap: clamp(32px, 4.5vw, 56px);
}

@media (min-width: 980px) {
  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    column-gap: clamp(44px, 7vw, 108px);
    align-items: start;
  }
}

.page-about .about-coverage__figure {
  margin: 0;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--ab-hair);
}

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

.page-about .about-coverage__note {
  margin-top: clamp(16px, 2vw, 22px);
  padding: clamp(16px, 2vw, 22px);
  background: var(--panel);
  border-left: 2px solid var(--orange);
}

.page-about .about-coverage__note-k {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--orange);
  line-height: 1;
}

.page-about .about-coverage__note-v {
  margin: 0;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.65;
}

/* 纯 CSS 标签切换 */
.page-about .sport-tabs {
  position: relative;
}

.page-about .sport-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 2.4vw, 26px);
}

.page-about .sport-tabs__tab {
  cursor: pointer;
  padding: 9px 16px;
  font-size: 13.5px;
  letter-spacing: .02em;
  color: var(--mist);
  border: 1px solid var(--ab-hair-soft);
  background: transparent;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
  user-select: none;
}

.page-about .sport-tabs__tab:hover {
  color: var(--snow);
  border-color: var(--cyan);
}

.page-about .sport-tabs__panel {
  display: none;
}

.page-about #ab-sport-1:checked ~ .sport-tabs__bar label[for="ab-sport-1"],
.page-about #ab-sport-2:checked ~ .sport-tabs__bar label[for="ab-sport-2"],
.page-about #ab-sport-3:checked ~ .sport-tabs__bar label[for="ab-sport-3"] {
  color: var(--void);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about #ab-sport-1:checked ~ .sport-tabs__panels .sport-tabs__panel[data-panel="1"],
.page-about #ab-sport-2:checked ~ .sport-tabs__panels .sport-tabs__panel[data-panel="2"],
.page-about #ab-sport-3:checked ~ .sport-tabs__panels .sport-tabs__panel[data-panel="3"] {
  display: block;
}

.page-about .sport-tabs__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ab-hair-soft);
  border: 1px solid var(--ab-hair-soft);
}

@media (min-width: 640px) {
  .page-about .sport-tabs__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .sport-tabs__list li {
  background: var(--ink);
  padding: 14px 16px;
  font-size: 15px;
  letter-spacing: .01em;
  color: var(--snow);
  position: relative;
  transition: background-color .18s ease, color .18s ease;
}

.page-about .sport-tabs__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--orange);
  transition: height .2s ease;
}

.page-about .sport-tabs__list li:hover {
  background: var(--panel-hi);
}

.page-about .sport-tabs__list li:hover::before {
  height: 60%;
}

.page-about .about-coverage__subscribe {
  margin-top: clamp(26px, 3.4vw, 40px);
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--ab-hair-soft);
}

.page-about .about-coverage__subscribe .h3 {
  margin: 0 0 14px;
  font-size: clamp(1.1rem, 1.9vw, 1.35rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-about .about-coverage__subscribe p {
  margin: 0 0 1em;
  max-width: 60ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.75;
}

.page-about .about-coverage__subscribe .btn {
  margin-top: 6px;
}

/* ---------- 资质与荣誉 ---------- */
.page-about .about-honors {
  border-top: 1px solid var(--ab-hair-soft);
}

.page-about .about-honors__lead {
  max-width: 56ch;
  margin: clamp(16px, 2vw, 22px) 0 clamp(32px, 4.6vw, 54px);
}

.page-about .about-honors__grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  grid-template-columns: minmax(0, 1fr);
}

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

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

  .page-about .about-honor--wide {
    grid-column: span 2;
  }
}

.page-about .about-honor {
  position: relative;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--panel);
  border-top: 2px solid var(--saffron);
  transition: border-top-color .2s ease, background-color .2s ease;
}

.page-about .about-honor:hover {
  background: var(--panel-hi);
  border-top-color: var(--orange);
}

.page-about .about-honor__badge {
  display: inline-flex;
  margin-bottom: clamp(14px, 2vw, 20px);
  color: var(--saffron);
}

.page-about .about-honor:hover .about-honor__badge {
  color: var(--orange);
}

.page-about .about-honor__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-about .about-honor__title {
  margin: 0 0 10px;
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--snow);
  line-height: 1.35;
}

.page-about .about-honor__text {
  margin: 0;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.7;
}

.page-about .about-honors__bar {
  margin-top: clamp(28px, 3.6vw, 44px);
  display: grid;
  gap: 1px;
  background: var(--ab-hair-soft);
  border: 1px solid var(--ab-hair-soft);
}

@media (min-width: 760px) {
  .page-about .about-honors__bar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-honors__bar-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: clamp(14px, 1.8vw, 20px) clamp(16px, 2vw, 22px);
  background: var(--ink);
}

.page-about .about-honors__bar-k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .about-honors__bar-v {
  font-size: 14.5px;
  color: var(--snow);
  letter-spacing: .01em;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-about .about-next__panel {
  position: relative;
  padding: clamp(28px, 4.4vw, 60px);
  background:
    linear-gradient(135deg, rgba(46, 242, 208, .1) 0%, rgba(123, 97, 255, .07) 46%, rgba(255, 107, 44, .09) 100%),
    var(--panel);
  border-left: 3px solid var(--cyan);
  display: grid;
  gap: clamp(26px, 3.6vw, 48px);
}

@media (min-width: 900px) {
  .page-about .about-next__panel {
    grid-template-columns: minmax(0, 1.5fr) minmax(220px, 0.9fr);
    column-gap: clamp(40px, 6vw, 90px);
    align-items: center;
  }
}

.page-about .about-next__copy h2 {
  margin: clamp(12px, 1.6vw, 20px) 0 clamp(16px, 2vw, 22px);
}

.page-about .about-next__copy p {
  margin: 0;
  max-width: 58ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .about-next__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .about-next__actions .btn {
  width: 100%;
  text-align: center;
}

/* ---------- 窄屏保护 ---------- */
@media (max-width: 480px) {
  .page-about .about-hero__title {
    max-width: none;
  }

  .page-about .about-timeline__item {
    padding-left: 18px;
  }

  .page-about .about-team__step {
    padding-left: 40px;
  }

  .page-about .sport-tabs__tab {
    padding: 8px 12px;
    font-size: 13px;
  }

  .page-about .about-honors__bar-item {
    flex-direction: column;
    gap: 4px;
  }
}

.page-about img,
.page-about svg {
  max-width: 100%;
}

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