/* ===== 关于K体育看台 · 页面专属样式 ===== */

.page-about {
  --about-teal-soft: rgba(12, 42, 44, 0.55);
  --about-wine-soft: rgba(42, 13, 27, 0.55);
  padding-bottom: 80px;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}
.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .breadcrumbs li {
  color: var(--muted);
}
.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-about .breadcrumbs a {
  color: var(--blue);
  text-decoration: none;
}
.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--green);
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: 24px 44px;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 3px;
  background: var(--green);
  clip-path: polygon(5% 0, 100% 0, 100% 100%, 0 100%);
}
.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}
.page-about h1 {
  margin: 12px 0 20px;
  font-size: clamp(32px, 7vw, 54px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--bone);
}
.page-about .about-hero__lead {
  margin: 0 0 28px;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--indigo);
  overflow: hidden;
}
.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 44%;
  height: 3px;
  background: var(--green);
  clip-path: polygon(10% 0, 100% 0, 100% 100%, 0 100%);
}
.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  padding: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-about .about-hero__stats > div {
  background: var(--arena);
  padding: 14px 16px;
}
.page-about .about-hero__stats dt {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.page-about .about-hero__stats dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--yellow);
}

/* ---------- 章节导航 ---------- */
.page-about .about-toc {
  position: sticky;
  top: 52px;
  z-index: 3;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 10px 0;
  border-block: 1px solid var(--line);
  background: var(--arena);
  scrollbar-width: none;
}
.page-about .about-toc::-webkit-scrollbar {
  display: none;
}
.page-about .about-toc a {
  flex: 0 0 auto;
  padding: 6px 12px;
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}
.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible {
  color: var(--green);
  border-color: var(--green);
  background: rgba(59, 255, 165, 0.06);
}

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  padding-block: 56px;
  border-top: 1px solid var(--line);
}
.page-about .about-section--tinted {
  background: var(--about-teal-soft);
}
.page-about .about-section--wine {
  background: var(--about-wine-soft);
}
.page-about .about-section--airy {
  padding-block: 72px;
}
.page-about h2 {
  margin: 0 0 18px;
  font-size: clamp(24px, 4.2vw, 36px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--bone);
}
.page-about h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--bone);
}
.page-about .about-copy {
  margin: 0 0 16px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 图片块 ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  background: var(--indigo);
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-about .about-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 初始出发点 ---------- */
.page-about .origin-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 32px 0 0;
  padding: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  list-style: none;
}
.page-about .origin-item {
  background: var(--arena);
  padding: 24px 20px;
  transition: box-shadow 180ms var(--ease);
}
.page-about .origin-item:hover,
.page-about .origin-item:focus-within {
  box-shadow: inset 0 0 0 1px var(--green);
}
.page-about .origin-item__idx {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--blue);
}
.page-about .origin-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  margin: 30px 0 0;
  padding: 0 0 0 36px;
  list-style: none;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--line);
}
.page-about .timeline__item {
  position: relative;
  padding-bottom: 30px;
}
.page-about .timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 7px;
  width: 11px;
  height: 11px;
  background: var(--arena);
  border: 1px solid var(--green);
  transition: background-color 160ms var(--ease), transform 160ms var(--ease);
}
.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-within::before {
  background: var(--green);
  transform: scale(1.2);
}
.page-about .timeline__year {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 8px;
  background: rgba(59, 255, 165, 0.1);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--green);
}
.page-about .timeline__title {
  font-size: 20px;
  font-weight: 800;
  color: var(--bone);
}
.page-about .timeline__text {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 团队分工 ---------- */
.page-about .team-explorer {
  margin-top: 30px;
}
.page-about .team-explorer .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  list-style: none;
}
.page-about .team-card {
  background: var(--indigo);
  padding: 24px 20px;
  transition: background-color 180ms var(--ease), box-shadow 180ms var(--ease);
}
.page-about .team-card:hover,
.page-about .team-card:focus-within {
  background: var(--indigo-deep);
  box-shadow: inset 0 0 0 1px var(--green);
}
.page-about .team-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--yellow);
}
.page-about .team-card__role {
  margin: 14px 0 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--bone);
}
.page-about .team-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 更新节奏 ---------- */
.page-about .cadence {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .cadence__item {
  padding-left: 18px;
  border-left: 1px solid var(--line);
  transition: border-color 180ms var(--ease);
}
.page-about .cadence__item:hover {
  border-left-color: var(--blue);
}
.page-about .cadence__value {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--yellow);
}
.page-about .cadence__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--bone);
}
.page-about .cadence__text {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 栏目体系 ---------- */
.page-about .nav-map {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  list-style: none;
}
.page-about .nav-map a {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 14px;
  padding: 16px 18px;
  background: var(--arena);
  text-decoration: none;
  transition: background-color 160ms var(--ease), box-shadow 160ms var(--ease);
}
.page-about .nav-map a:hover,
.page-about .nav-map a:focus-visible {
  background: var(--indigo);
  box-shadow: inset 3px 0 0 var(--blue);
}
.page-about .nav-map a[aria-current="page"] {
  box-shadow: inset 3px 0 0 var(--green);
}
.page-about .nav-map__idx {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--blue);
}
.page-about .nav-map__name {
  font-size: 17px;
  font-weight: 800;
  color: var(--bone);
}
.page-about .nav-map__desc {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作与认可 ---------- */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 30px;
}
.page-about .partner-card {
  padding: 22px 20px;
  background: var(--arena);
  border: 1px solid var(--line);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}
.page-about .partner-card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}
.page-about .partner-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--green);
}
.page-about .partner-card h3 {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--bone);
}
.page-about .partner-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 收尾入口 ---------- */
.page-about .about-cta {
  padding-block: 64px 8px;
}
.page-about .about-cta__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 28px;
  padding: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-about .about-cta__card {
  display: block;
  padding: 22px 20px;
  background: var(--indigo);
  text-decoration: none;
  transition: background-color 180ms var(--ease), box-shadow 180ms var(--ease);
}
.page-about .about-cta__card:hover,
.page-about .about-cta__card:focus-visible {
  background: var(--indigo-deep);
  box-shadow: inset 0 0 0 1px var(--green);
}
.page-about .about-cta__title {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--bone);
}
.page-about .about-cta__desc {
  display: block;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 640 起 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .origin-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .cadence {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px 28px;
  }
  .page-about .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-cta__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-section {
    padding-block: 64px;
  }
}

/* ---------- 900 起 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding-block: 36px 56px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 52px;
  }
  .page-about .about-section {
    padding-block: 80px;
  }
  .page-about .about-section--airy {
    padding-block: 104px;
  }
  .page-about .about-copy {
    font-size: 17px;
  }
  .page-about .timeline {
    padding-left: 44px;
  }
  .page-about .timeline::before {
    left: 7px;
  }
  .page-about .timeline__item::before {
    left: -41px;
  }
  .page-about .timeline__title {
    font-size: 22px;
  }
  .page-about .cadence {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-cta__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-cta {
    padding-block: 80px 8px;
  }
}

/* ---------- 1200 起 ---------- */
@media (min-width: 1200px) {
  .page-about .about-hero__grid {
    gap: 64px;
  }
  .page-about .about-figure img {
    max-height: 420px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc a,
  .page-about .timeline__item::before,
  .page-about .team-card,
  .page-about .origin-item,
  .page-about .partner-card,
  .page-about .about-cta__card,
  .page-about .nav-map a,
  .page-about .cadence__item {
    transition: none;
  }
  .page-about .partner-card:hover {
    transform: none;
  }
}
</style>