.page-about {
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
}

/* ===== Hero ===== */
.page-about .about-hero {
  position: relative;
  padding: 40px var(--gutter) 56px;
  background: var(--gradient-sport);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 20%, rgba(212, 175, 55, 0.18), transparent 40%),
    linear-gradient(135deg, transparent 70%, rgba(230, 57, 70, 0.08) 100%);
  pointer-events: none;
}
.page-about .about-hero__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-about .about-hero__content {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__eyebrow {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 18px 0 8px;
}
.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.5vw, 46px);
  line-height: 1.18;
  letter-spacing: -0.5px;
  margin: 0 0 16px;
  color: var(--color-white);
}
.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  max-width: 60ch;
  margin: 0 0 24px;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}
.page-about .about-hero__note {
  font-size: 14px;
  color: var(--color-text-muted);
  border-left: 3px solid var(--color-gold);
  padding-left: 14px;
  margin: 14px 0 0;
}
.page-about .about-hero__side {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__img {
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) 0;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.page-about .about-hero__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}
.page-about .about-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  background: rgba(10, 22, 40, 0.55);
  border: 1px solid rgba(212, 175, 55, 0.3);
  backdrop-filter: blur(8px);
}
.page-about .about-hero__badge-main {
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.page-about .about-hero__badge-num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-about .about-hero__badge-unit {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-gold-light);
}
.page-about .about-hero__badge-label {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ===== 面包屑 ===== */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 13px;
  color: var(--color-text-muted);
}
.page-about .breadcrumb a {
  color: var(--color-gold);
  text-decoration: none;
}
.page-about .breadcrumb a:hover {
  text-decoration: underline;
}

/* ===== 目录 ===== */
.page-about .about-toc {
  position: sticky;
  top: calc(var(--header-h) + 8px);
  z-index: 20;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  margin-bottom: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-about .about-toc::-webkit-scrollbar {
  display: none;
}
.page-about .about-toc__inner {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: min-content;
}
.page-about .about-toc__heading {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-right: 8px;
  white-space: nowrap;
}
.page-about .about-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  color: var(--color-text);
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
  transition: background var(--dur) var(--ease);
}
.page-about .about-toc__link:hover,
.page-about .about-toc__link[aria-current="true"] {
  background: rgba(212, 175, 55, 0.14);
}
.page-about .about-toc__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-muted);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  flex: 0 0 auto;
}
.page-about .about-toc__link:hover .about-toc__dot,
.page-about .about-toc__link[aria-current="true"] .about-toc__dot {
  background: var(--color-gold);
  box-shadow: 0 0 8px rgba(212, 175, 55, 0.6);
}

/* ===== 布局 ===== */
.page-about .about-layout {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px var(--gutter) 16px;
}
.page-about .about-layout__main {
  min-width: 0;
  display: grid;
  gap: 32px;
}
.page-about .about-section {
  padding: 40px 0;
  border-radius: var(--radius-lg);
}

/* ===== 我们是谁 ===== */
.page-about .about-intro {
  background: var(--color-bg-light);
  padding: 40px 24px;
}
.page-about .about-intro .section-head {
  margin-bottom: 28px;
}
.page-about .about-intro__grid {
  display: grid;
  gap: 28px;
}
.page-about .about-intro__text p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  margin: 0 0 16px;
}
.page-about .about-intro__list {
  display: grid;
  gap: 14px;
}
.page-about .about-intro__item {
  display: flex;
  gap: 14px;
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-about .about-intro__item:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.06);
}
.page-about .about-intro__item-icon {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--color-gold);
  min-width: 36px;
}
.page-about .about-intro__item h3 {
  font-family: var(--font-display);
  font-size: 17px;
  margin: 0 0 6px;
  color: var(--color-white);
}
.page-about .about-intro__item p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0;
}

/* ===== 里程碑 ===== */
.page-about .about-milestone {
  position: relative;
  background: var(--gradient-sport);
  padding: 40px 24px;
  overflow: hidden;
}
.page-about .about-milestone__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.18;
  overflow: hidden;
}
.page-about .about-milestone__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-about .about-milestone .section-head,
.page-about .about-milestone .timeline {
  position: relative;
  z-index: 1;
}
.page-about .about-milestone .section-head {
  margin-bottom: 28px;
}
.page-about .about-milestone .timeline {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
}
.page-about .about-milestone .timeline__item {
  position: relative;
  padding: 0 0 32px 34px;
}
.page-about .about-milestone .timeline__item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold), rgba(230, 57, 70, 0.35));
}
.page-about .about-milestone .timeline__item:last-child::before {
  background: linear-gradient(180deg, var(--color-gold), transparent);
}
.page-about .about-milestone .timeline__node {
  position: absolute;
  left: 0;
  top: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 3px solid var(--color-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.18);
  z-index: 1;
}
.page-about .about-milestone .timeline__date {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--color-gold);
  margin-bottom: 6px;
}
.page-about .about-milestone .timeline__content {
  border-radius: var(--radius-md);
  padding: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
}
.page-about .about-milestone .timeline__content h3 {
  font-family: var(--font-display);
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--color-white);
}
.page-about .about-milestone .timeline__content p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text);
  margin: 0;
}

/* ===== 数据 ===== */
.page-about .about-stats {
  background: var(--color-bg-light);
  padding: 40px 24px;
}
.page-about .about-stats .section-head {
  margin-bottom: 28px;
}
.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.page-about .about-stats__item {
  padding: 22px 18px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .about-stats__item:hover {
  transform: translateY(-3px);
  border-color: rgba(212, 175, 55, 0.4);
}
.page-about .about-stats__item .stat__number {
  display: block;
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.1;
  margin-bottom: 6px;
}
.page-about .about-stats__unit {
  font-size: 22px;
  font-weight: 700;
  margin-left: 2px;
  color: var(--color-gold-light);
}
.page-about .about-stats__label {
  display: block;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 6px;
}
.page-about .about-stats__desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text-muted);
  margin: 0;
}

/* ===== 价值观 ===== */
.page-about .about-values {
  background: var(--color-bg);
  padding: 40px 24px;
}
.page-about .about-values .section-head {
  margin-bottom: 28px;
}
.page-about .about-values__grid {
  display: grid;
  gap: 16px;
  margin-bottom: 28px;
}
.page-about .about-values__card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.page-about .about-values__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.page-about .about-values__card--2 {
  border-top: 3px solid var(--color-gold);
}
.page-about .about-values__card--3 {
  border-top: 3px solid var(--color-red);
}
.page-about .about-values__card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.page-about .about-values__num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--color-gold);
}
.page-about .about-values__card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--color-white);
  margin: 0 0 10px;
}
.page-about .about-values__card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  margin: 0;
}
.page-about .about-values__foot {
  display: grid;
  gap: 20px;
  align-items: center;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--gradient-sport);
}
.page-about .about-values__img {
  border-radius: var(--radius-md);
  overflow: hidden;
}
.page-about .about-values__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-about .about-values__foot-text h3 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--color-white);
  margin: 0 0 10px;
}
.page-about .about-values__foot-text p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  margin: 0 0 16px;
}

/* ===== CTA ===== */
.page-about .about-cta {
  padding: 48px var(--gutter) 56px;
  background: var(--gradient-sport);
}
.page-about .about-cta__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  gap: 24px;
  align-items: center;
}
.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  margin: 0 0 8px;
  color: var(--color-white);
}
.page-about .about-cta p {
  font-size: 15px;
  color: var(--color-text-muted);
  margin: 0;
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===== 响应式 ===== */
@media (min-width: 768px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
  }
  .page-about .about-hero {
    padding-top: 64px;
    padding-bottom: 72px;
  }
  .page-about .about-intro__grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }
  .page-about .about-values__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-values__foot {
    grid-template-columns: 0.9fr 1.1fr;
  }
  .page-about .about-cta__inner {
    grid-template-columns: 1fr auto;
  }

  .page-about .about-milestone .timeline {
    flex-direction: row;
    align-items: flex-start;
    gap: 14px;
  }
  .page-about .about-milestone .timeline::before {
    content: "";
    position: absolute;
    top: 11px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gold), rgba(230, 57, 70, 0.4));
    z-index: 0;
  }
  .page-about .about-milestone .timeline__item {
    flex: 1;
    padding: 34px 0 0;
  }
  .page-about .about-milestone .timeline__item::before {
    display: none;
  }
  .page-about .about-milestone .timeline__node {
    top: 0;
    left: 0;
  }
}

@media (min-width: 992px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
  }
  .page-about .about-toc {
    position: sticky;
    top: 32px;
    height: fit-content;
    background: transparent;
    backdrop-filter: none;
    padding: 0;
    margin: 0;
    overflow: visible;
  }
  .page-about .about-toc__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .page-about .about-toc__heading {
    margin: 0 0 12px 12px;
  }
  .page-about .about-toc__link {
    padding: 8px 12px;
    border-radius: var(--radius-pill);
    font-size: 14px;
  }
  .page-about .about-section {
    padding: 56px 0;
  }
  .page-about .about-intro,
  .page-about .about-milestone,
  .page-about .about-stats,
  .page-about .about-values {
    padding-left: 28px;
    padding-right: 28px;
  }
}