/* ============================================================
   PAGE · ABOUT — 关于爱游戏体育
   作用域：.page-about
   视觉：黑金高对比·科技感网格·金色时间线·非对称布局
   ============================================================ */
.page-about {
  position: relative;
  background: var(--c-bg);
  color: var(--c-muted);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow: hidden;
  --gold-soft: rgba(201, 162, 39, 0.1);
  --blue-ray: rgba(0, 224, 255, 0.12);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-muted);
  display: flex;
  gap: 8px;
}
.page-about .breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.page-about .breadcrumb a:hover {
  color: var(--c-gold);
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--c-gold);
}

/* ---------- HERO ---------- */
.page-about .about-hero {
  position: relative;
  padding: 48px 0 72px;
  background-image:
    linear-gradient(rgba(201, 162, 39, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 162, 39, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  overflow: hidden;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gold) 0%, var(--c-gold) 30%, var(--c-blue) 30%, var(--c-blue) 35%, transparent 35%, transparent 45%, var(--c-gold) 45%, var(--c-gold) 70%, var(--c-blue) 70%);
  opacity: 0.55;
}
.page-about .about-hero__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-gold);
}
.page-about .about-hero__index {
  border-left: 2px solid var(--c-gold);
  padding-left: 10px;
}
.page-about .about-hero__title {
  font-family: var(--font-head);
  font-size: 38px;
  line-height: 1.2;
  font-weight: 900;
  color: var(--c-light);
  margin: 32px 0 28px;
  max-width: 12em;
}
.page-about .about-hero__bottom {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 980px;
}
.page-about .about-hero__lead {
  font-size: 16px;
  color: var(--c-light);
  opacity: 0.85;
  max-width: 60ch;
  margin: 0;
}
.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--c-border);
}
.page-about .about-hero__facts > div {
  padding: 16px 24px 16px 0;
  margin-right: 32px;
  border-bottom: 1px solid var(--c-border);
}
.page-about .about-hero__facts dt {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-muted);
}
.page-about .about-hero__facts dd {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--c-gold);
}
.page-about .about-hero__ghost {
  display: none;
}

/* ---------- 品牌使命 ---------- */
.page-about .about-mission {
  padding: 56px 0;
}
.page-about .about-mission__grid {
  display: grid;
  gap: 40px;
}
.page-about .about-mission__copy .section-head {
  margin-bottom: 24px;
}
.page-about .about-mission__lead {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-light);
  font-family: var(--font-head);
  line-height: 1.35;
  margin: 0 0 16px;
}
.page-about .about-mission__desc {
  font-size: 15px;
  color: var(--c-muted);
  margin: 0 0 24px;
  max-width: 60ch;
}
.page-about .about-mission__points {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-mission__points li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 14px 0;
  border-top: 1px solid var(--c-border);
}
.page-about .about-mission__points li:last-child {
  border-bottom: 1px solid var(--c-border);
}
.page-about .about-mission__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-gold);
  background: var(--gold-soft);
  padding: 2px 8px;
  flex-shrink: 0;
}
.page-about .about-mission__points p {
  margin: 0;
  font-size: 14px;
  color: var(--c-light);
}
.page-about .about-mission__media {
  margin: 0;
  position: relative;
}
.page-about .about-mission__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.08);
}
.page-about figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-muted);
  letter-spacing: 0.06em;
}

/* ---------- 核心数据 ---------- */
.page-about .about-stats {
  background: var(--c-dark);
  padding: 56px 0;
  position: relative;
}
.page-about .about-stats::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gold) 0%, var(--c-blue) 100%);
}
.page-about .about-stats .section-head {
  margin-bottom: 28px;
}
.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.page-about .about-stat {
  background: rgba(10, 10, 10, 0.5);
  border: 1px solid var(--c-border);
  padding: 24px 20px;
  transition: border-color 0.25s;
}
.page-about .about-stat:hover {
  border-color: var(--c-gold);
}
.page-about .about-stat__num {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 900;
  line-height: 1.1;
  color: var(--c-gold);
  display: block;
}
.page-about .about-stat__label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-light);
}
.page-about .about-stat__note {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--c-muted);
}

/* ---------- 发展里程碑 ---------- */
.page-about .about-milestone {
  padding: 56px 0 64px;
  position: relative;
}
.page-about .about-milestone::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 180px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-gold));
}
.page-about .about-milestone .section-head {
  margin-bottom: 28px;
}
.page-about .about-milestone__grid {
  display: grid;
  gap: 40px;
}
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 40px;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold) 0%, var(--c-gold-bright) 35%, var(--c-border) 100%);
}
.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 36px;
}
.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 8px;
  width: 14px;
  height: 14px;
  background: var(--c-gold);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px var(--c-bg), 0 0 14px rgba(201, 162, 39, 0.5);
}
.page-about .about-timeline__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-gold);
  background: var(--gold-soft);
  border-left: 2px solid var(--c-gold);
  padding: 3px 10px;
  margin-bottom: 10px;
}
.page-about .about-timeline__body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-light);
  margin: 0 0 8px;
}
.page-about .about-timeline__body p {
  font-size: 14px;
  color: var(--c-muted);
  margin: 0;
  max-width: 46ch;
}
.page-about .about-milestone__media {
  margin: 0;
}
.page-about .about-milestone__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 团队与资质 ---------- */
.page-about .about-team {
  background: var(--c-dark);
  padding: 56px 0;
  position: relative;
}
.page-about .about-team::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-gold) 0 12px, transparent 12px 20px, var(--c-blue) 20px 28px, transparent 28px 40px);
  opacity: 0.6;
}
.page-about .about-team__grid {
  display: grid;
  gap: 40px;
}
.page-about .about-team__copy .section-head {
  margin-bottom: 20px;
}
.page-about .about-team__intro {
  font-size: 16px;
  color: var(--c-light);
  margin: 0 0 24px;
  max-width: 44em;
}
.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-team__list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-border);
}
.page-about .about-team__list li:first-child {
  border-top: 1px solid var(--c-border);
}
.page-about .about-team__icon {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-gold);
  background: var(--gold-soft);
  padding: 2px 8px;
  flex-shrink: 0;
}
.page-about .about-team__list h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-light);
  margin: 0 0 4px;
}
.page-about .about-team__list p {
  font-size: 14px;
  color: var(--c-muted);
  margin: 0;
}
.page-about .about-team__aside {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.page-about .about-team__media {
  margin: 0;
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-team__certs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-about .about-team__certs li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(10, 10, 10, 0.55);
  border: 1px solid var(--c-border);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--c-light);
}

/* ---------- 服务保障 ---------- */
.page-about .about-service {
  padding: 56px 0 64px;
  position: relative;
}
.page-about .about-service::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 162, 39, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 162, 39, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.page-about .about-service .section-head {
  margin-bottom: 28px;
}
.page-about .about-service__grid {
  display: grid;
  gap: 16px;
}
.page-about .about-service__item {
  background: var(--c-dark);
  border: 1px solid var(--c-border);
  padding: 28px 24px;
  position: relative;
  transition: border-color 0.25s;
}
.page-about .about-service__item:hover {
  border-color: var(--c-gold);
}
.page-about .about-service__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-blue);
  letter-spacing: 0.14em;
}
.page-about .about-service__item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-light);
  margin: 12px 0 8px;
}
.page-about .about-service__item p {
  font-size: 14px;
  color: var(--c-muted);
  margin: 0;
}
.page-about .about-service__cta {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}
.page-about .about-service__cta p {
  margin: 0;
  font-size: 14px;
  color: var(--c-muted);
}
.page-about .about-service__cta a:not(.btn) {
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.4);
  transition: border-color 0.2s;
}
.page-about .about-service__cta a:not(.btn):hover {
  border-color: var(--c-gold);
}

/* ---------- 平板增强 ---------- */
@media (min-width: 768px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-service__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 64px 0 96px;
  }
  .page-about .about-hero__title {
    font-size: 64px;
  }
  .page-about .about-hero__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
    gap: 40px;
  }
  .page-about .about-hero__facts {
    flex-shrink: 0;
  }
  .page-about .about-hero__ghost {
    display: block;
    position: absolute;
    right: 20px;
    top: 80px;
    font-family: var(--font-head);
    font-weight: 900;
    font-size: 220px;
    line-height: 1;
    color: rgba(201, 162, 39, 0.05);
    pointer-events: none;
    user-select: none;
    z-index: 0;
  }
  .page-about .about-mission {
    padding: 80px 0;
  }
  .page-about .about-mission__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 56px;
  }
  .page-about .about-stats {
    padding: 80px 0;
  }
  .page-about .about-stats__grid {
    gap: 0;
    border-top: 1px solid var(--c-border);
    border-left: 1px solid var(--c-border);
  }
  .page-about .about-stat {
    background: transparent;
    border: none;
    border-right: 1px solid var(--c-border);
    border-bottom: 1px solid var(--c-border);
    padding: 36px 28px;
  }
  .page-about .about-stat:hover {
    border-color: var(--c-gold);
  }
  .page-about .about-stat__num {
    font-size: 48px;
  }
  .page-about .about-milestone {
    padding: 80px 0;
  }
  .page-about .about-milestone__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
    gap: 56px;
  }
  .page-about .about-milestone__media img {
    aspect-ratio: 3 / 2;
  }
  .page-about .about-team {
    padding: 80px 0;
  }
  .page-about .about-team__grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }
  .page-about .about-service {
    padding: 80px 0;
  }
  .page-about .about-service__grid {
    gap: 24px;
  }
}