/* ================= 品牌中心 · page-about ================= */

.page-about .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: clamp(20px, 3vw, 34px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}
.page-about .crumb__item {
  color: var(--c-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-about a.crumb__item:hover {
  color: var(--c-white);
  border-bottom-color: var(--c-orange);
}
.page-about .crumb__item[aria-current="page"] {
  color: var(--c-white);
}
.page-about .crumb__sep {
  color: var(--c-orange);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 4vw, 54px) 0 clamp(44px, 6vw, 88px);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: 78vw;
  height: 78vw;
  max-width: 760px;
  max-height: 760px;
  background: radial-gradient(circle at 50% 50%, rgba(255, 77, 28, .22), transparent 64%);
  pointer-events: none;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  bottom: -30%;
  width: 52vw;
  height: 52vw;
  max-width: 520px;
  max-height: 520px;
  background: radial-gradient(circle at 50% 50%, rgba(0, 216, 255, .13), transparent 66%);
  pointer-events: none;
}
.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 54px);
  align-items: end;
}
.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 68px);
  line-height: 1.06;
  letter-spacing: -.035em;
  color: var(--c-white);
}
.page-about .about-hero__title em {
  font-style: normal;
  color: var(--c-orange);
}
.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(247, 244, 239, .78);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-about .about-hero__stat {
  background: linear-gradient(158deg, rgba(247, 244, 239, .075), rgba(247, 244, 239, .015));
  padding: 18px 16px 20px;
}
.page-about .about-hero__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--c-cyan);
}
.page-about .about-hero__num--orange {
  color: var(--c-orange);
}
.page-about .about-hero__cap {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--c-gray);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  padding: clamp(46px, 6.5vw, 96px) 0;
}
.page-about .about-sec__head {
  max-width: 74ch;
  margin-bottom: clamp(26px, 3.5vw, 48px);
}
.page-about .about-h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 44px);
  line-height: 1.14;
  letter-spacing: -.025em;
  color: var(--c-white);
}
.page-about .about-sec__lead {
  margin: 18px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(247, 244, 239, .76);
}

/* ---------- 起点 ---------- */
.page-about .about-origin__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 28px);
}
.page-about .about-origin__card {
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-orange);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(122, 31, 61, .30), rgba(11, 14, 19, .55) 62%);
  padding: clamp(20px, 2.6vw, 30px);
}
.page-about .about-origin__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  letter-spacing: -.01em;
  color: var(--c-white);
}
.page-about .about-origin__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 244, 239, .78);
}
.page-about .about-origin__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-about .about-origin__item {
  background: rgba(247, 244, 239, .035);
  padding: 20px clamp(16px, 2vw, 24px);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
}
.page-about .about-origin__idx {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-orange);
  padding-top: 4px;
}
.page-about .about-origin__item-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: -.01em;
  color: var(--c-white);
}
.page-about .about-origin__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247, 244, 239, .72);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline__media {
  margin: 0 0 clamp(24px, 3vw, 40px);
}
.page-about .frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.page-about .frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-about .about-timeline__media {
  aspect-ratio: 16 / 10;
}
.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .about-tl {
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-orange);
  border-radius: var(--radius);
  background: linear-gradient(118deg, rgba(11, 14, 19, .92), rgba(23, 28, 37, .68));
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.page-about .about-tl:hover {
  transform: translateX(3px);
}
.page-about .about-tl[open] {
  border-left-color: var(--c-cyan);
}
.page-about .about-tl__head {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px clamp(14px, 2vw, 22px);
}
.page-about .about-tl__head::-webkit-details-marker {
  display: none;
}
.page-about .about-tl__num {
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1;
  letter-spacing: -.03em;
  color: rgba(247, 244, 239, .16);
  transition: color .25s var(--ease);
}
.page-about .about-tl[open] .about-tl__num,
.page-about .about-tl:hover .about-tl__num {
  color: var(--c-orange);
}
.page-about .about-tl__title {
  font-family: var(--font-display);
  font-size: clamp(14px, 1.7vw, 18px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--c-white);
}
.page-about .about-tl__panel {
  padding: 0 clamp(14px, 2vw, 22px) 20px;
}
.page-about .about-tl__panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(247, 244, 239, .74);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 42px);
  align-items: start;
}
.page-about .about-team__media {
  aspect-ratio: 4 / 3;
}
.page-about .about-team__roles {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-about .about-role {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px clamp(16px, 2vw, 24px);
  background: rgba(247, 244, 239, .035);
  transition: background .25s var(--ease);
}
.page-about .about-role:hover {
  background: rgba(0, 216, 255, .07);
}
.page-about .about-role__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-cyan);
  padding-top: 3px;
}
.page-about .about-role__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: -.01em;
  color: var(--c-white);
}
.page-about .about-role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247, 244, 239, .72);
}
.page-about .about-team__cities {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}
.page-about .about-team__city {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  background: linear-gradient(150deg, rgba(14, 59, 58, .55), rgba(11, 14, 19, .5));
}
.page-about .about-team__city-name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: -.02em;
  color: var(--c-white);
}
.page-about .about-team__city p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247, 244, 239, .74);
}

/* ---------- 合作生态 ---------- */
.page-about .about-coop__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-about .about-coop__item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 22px 26px;
  background: rgba(247, 244, 239, .045);
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}
.page-about .about-coop__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--accent, var(--c-orange));
}
.page-about .about-coop__item:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}
.page-about .about-coop__item--media {
  --accent: var(--c-orange);
}
.page-about .about-coop__item--data {
  --accent: var(--c-cyan);
}
.page-about .about-coop__item--fan {
  --accent: var(--c-amber);
}
.page-about .about-coop__item--venue {
  --accent: #7A1F3D;
}
.page-about .about-coop__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 19px);
  letter-spacing: -.01em;
  color: var(--c-white);
}
.page-about .about-coop__item p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(247, 244, 239, .74);
}

/* ---------- 城市观赛 ---------- */
.page-about .about-city__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 38px);
  align-items: start;
}
.page-about .about-city__media {
  aspect-ratio: 14 / 9;
}
.page-about .about-city__tabs {
  min-width: 0;
}
.page-about .about-city__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-about .about-city__labels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.page-about .about-city__label {
  cursor: pointer;
  padding: 9px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-gray);
  transition: color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}
.page-about .about-city__label:hover {
  color: var(--c-white);
  border-color: var(--c-orange);
}
.page-about #city-sh:checked ~ .about-city__labels label[for="city-sh"],
.page-about #city-wh:checked ~ .about-city__labels label[for="city-wh"],
.page-about #city-gz:checked ~ .about-city__labels label[for="city-gz"] {
  background: var(--c-orange);
  border-color: var(--c-orange);
  color: var(--c-black);
}
.page-about .about-city__panel {
  display: none;
}
.page-about #city-sh:checked ~ .about-city__panels .about-city__panel[data-city="sh"],
.page-about #city-wh:checked ~ .about-city__panels .about-city__panel[data-city="wh"],
.page-about #city-gz:checked ~ .about-city__panels .about-city__panel[data-city="gz"] {
  display: block;
}
.page-about .about-city__panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(20px, 2.6vw, 30px);
  background: linear-gradient(160deg, rgba(59, 47, 128, .35), rgba(11, 14, 19, .62) 68%);
}
.page-about .about-city__panel-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.1vw, 22px);
  letter-spacing: -.015em;
  color: var(--c-white);
}
.page-about .about-city__panel p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.88;
  color: rgba(247, 244, 239, .78);
}
.page-about .about-city__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
}
.page-about .about-city__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 216, 255, .4);
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-about .about-city__link:hover {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

/* ---------- 长期合作的理由 ---------- */
.page-about .about-why__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-about .about-why__item {
  background: rgba(247, 244, 239, .035);
  padding: 24px clamp(18px, 2.2vw, 28px) 26px;
  transition: background .25s var(--ease);
}
.page-about .about-why__item:hover {
  background: rgba(255, 77, 28, .08);
}
.page-about .about-why__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-orange);
  margin-bottom: 12px;
}
.page-about .about-why__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 19px);
  letter-spacing: -.01em;
  color: var(--c-white);
}
.page-about .about-why__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(247, 244, 239, .74);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding-bottom: clamp(56px, 8vw, 110px);
}
.page-about .about-cta__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(26px, 4vw, 52px);
  background:
    radial-gradient(circle at 88% 12%, rgba(0, 216, 255, .16), transparent 55%),
    linear-gradient(150deg, rgba(122, 31, 61, .55), rgba(11, 14, 19, .72) 70%);
}
.page-about .about-cta__title {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 36px);
  line-height: 1.16;
  letter-spacing: -.025em;
  color: var(--c-white);
}
.page-about .about-cta__text p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 244, 239, .78);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-origin__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-team__cities {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-coop__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-why__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .85fr);
  }
  .page-about .about-origin__body {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.35fr);
    align-items: start;
  }
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.28fr);
  }
  .page-about .about-city__layout {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.15fr);
  }
  .page-about .about-cta__panel {
    grid-template-columns: minmax(0, 1.5fr) auto;
  }
  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl,
  .page-about .about-coop__item,
  .page-about .about-role,
  .page-about .about-why__item,
  .page-about .about-city__label {
    transition: none;
  }
  .page-about .about-tl:hover,
  .page-about .about-coop__item:hover {
    transform: none;
  }
}
</main>
<<<END>>>