/* ===== 页面作用域：page-about ===== */
.page-about {
  position: relative;
  background-color: var(--color-deep);
  color: var(--color-paper);
  min-height: 100vh;
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(192, 192, 192, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(192, 192, 192, 0.07) 1px, transparent 1px);
  background-size: 56px 56px;
}

.page-about__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: clamp(96px, 14vw, 164px);
  padding-bottom: 72px;
}

/* 面包屑 */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-silver);
}

.page-about .breadcrumb__link {
  color: var(--color-silver);
}

.page-about .breadcrumb__sep {
  color: var(--color-neon);
}

.page-about .breadcrumb__current {
  color: var(--color-paper);
}

/* 侧边索引 */
.page-about__aside {
  display: block;
  margin-bottom: 16px;
}

.page-about__aside-cap {
  margin-bottom: 12px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-silver);
  text-transform: uppercase;
}

.page-about__aside-list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 0 0 4px;
  margin: 0;
  list-style: none;
}

.page-about__aside-list::-webkit-scrollbar {
  display: none;
}

.page-about__aside-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid rgba(192, 192, 192, 0.32);
  background: rgba(31, 58, 95, 0.35);
  color: var(--color-silver);
  font-family: var(--font-data);
  font-size: 12px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-about__aside-num {
  color: var(--color-neon);
}

.page-about__aside-link:hover,
.page-about__aside-link:focus-visible {
  border-color: var(--color-neon);
  color: var(--color-paper);
  background-color: rgba(57, 255, 20, 0.08);
}

/* 章节通用 */
.page-about__section {
  margin-top: var(--space-section);
  scroll-margin-top: calc(var(--header-h) + 32px);
}

.page-about__origin {
  margin-top: 8px;
}

.page-about__intro {
  max-width: 720px;
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-silver);
}

/* 01 坐标原点 */
.page-about__hero-title {
  margin: 20px 0 18px;
  font-family: var(--font-heading);
  font-size: clamp(52px, 10vw, 128px);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--color-paper);
}

.page-about__hero-lead {
  margin: 0 0 28px;
  padding-left: 16px;
  border-left: 3px solid var(--color-neon);
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--color-neon);
}

.page-about__origin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-top: 32px;
}

.page-about__origin-statement {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 20px;
  padding: 20px;
  border-left: 2px solid var(--color-neon);
  background-color: var(--color-navy);
  font-family: var(--font-data);
  font-size: 15px;
  line-height: 1.7;
}

.page-about__origin-axis {
  color: var(--color-silver);
}

.page-about__origin-result {
  color: var(--color-neon);
}

.page-about__origin-text {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-paper);
  opacity: 0.88;
}

.page-about__origin-links {
  font-family: var(--font-data);
  font-size: 14px;
}

.page-about__origin-figure {
  margin: 0;
}

.page-about__manifesto {
  position: relative;
  overflow: hidden;
  margin-top: 56px;
  padding: clamp(44px, 8vw, 96px) 24px;
  background-color: var(--color-navy);
  border: 1px solid rgba(192, 192, 192, 0.3);
  text-align: center;
}

.page-about__manifesto::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 20%, rgba(57, 255, 20, 0.1) 50%, transparent 80%);
  pointer-events: none;
}

.page-about__manifesto-text {
  position: relative;
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(44px, 8vw, 96px);
  line-height: 1.08;
  color: var(--color-paper);
}

.page-about__manifesto-highlight {
  color: var(--color-neon);
  text-shadow: 0 0 20px rgba(57, 255, 20, 0.4);
  transition: color 0.3s var(--ease), text-shadow 0.3s var(--ease), -webkit-text-stroke-color 0.3s var(--ease);
}

.page-about__manifesto:hover .page-about__manifesto-highlight {
  -webkit-text-stroke: 1px rgba(57, 255, 20, 0.35);
  text-shadow: 0 0 38px rgba(57, 255, 20, 0.6);
}

/* 02 发展里程碑 */
.page-about__timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.page-about__milestone {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 28px 22px 24px;
  margin: 0;
  border: 1px solid rgba(192, 192, 192, 0.2);
  background-color: var(--color-navy);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), background-color 0.3s var(--ease);
}

.page-about__milestone::before {
  content: "";
  display: block;
  width: 44px;
  height: 2px;
  margin-bottom: 14px;
  background: var(--color-neon);
  transform: skewX(-45deg);
}

.page-about__milestone--teal {
  background: linear-gradient(145deg, rgba(15, 76, 92, 0.7), rgba(31, 58, 95, 0.92) 55%);
}

.page-about__milestone--wine {
  background: linear-gradient(145deg, rgba(123, 30, 59, 0.7), rgba(31, 58, 95, 0.92) 55%);
}

.page-about__milestone--indigo {
  background: linear-gradient(145deg, rgba(61, 44, 110, 0.72), rgba(31, 58, 95, 0.92) 55%);
}

.page-about__milestone--deep {
  background: linear-gradient(145deg, rgba(10, 31, 60, 0.85), rgba(31, 58, 95, 0.9) 55%);
}

.page-about__milestone:hover,
.page-about__milestone:focus-within {
  border-color: var(--color-neon);
  background-color: rgba(57, 255, 20, 0.06);
  transform: translateY(-2px);
}

.page-about__milestone-year {
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--color-silver);
}

.page-about__milestone-title {
  margin: 4px 0 0;
  font-family: var(--font-heading);
  font-size: 20px;
  line-height: 1.35;
}

.page-about__milestone-link {
  color: var(--color-paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about__milestone-link:hover,
.page-about__milestone-link:focus-visible {
  color: var(--color-neon);
  border-color: var(--color-neon);
}

.page-about__milestone-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-silver);
}

.page-about__milestone-tag {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed rgba(192, 192, 192, 0.3);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--color-neon);
}

.page-about__milestone-figure {
  margin: 32px 0 0;
}

/* 03 数据规模 */
.page-about__scale-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 36px;
}

.page-about__scale-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 180px;
  padding: 24px 18px 20px;
  margin: 0;
  border: 1px solid rgba(192, 192, 192, 0.18);
  background-color: var(--color-navy);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about__scale-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-silver);
}

.page-about__scale-card--league {
  background: linear-gradient(135deg, rgba(57, 255, 20, 0.1), rgba(31, 58, 95, 0.94) 42%);
}

.page-about__scale-card--league::before {
  background: var(--color-neon);
}

.page-about__scale-card--match {
  background: linear-gradient(135deg, rgba(15, 76, 92, 0.82), rgba(31, 58, 95, 0.94) 42%);
}

.page-about__scale-card--match::before {
  background: #4FA8B8;
}

.page-about__scale-card--h2h {
  background: linear-gradient(135deg, rgba(123, 30, 59, 0.82), rgba(31, 58, 95, 0.94) 42%);
}

.page-about__scale-card--h2h::before {
  background: #C26A8A;
}

.page-about__scale-card--team {
  background: linear-gradient(135deg, rgba(61, 44, 110, 0.84), rgba(31, 58, 95, 0.94) 42%);
}

.page-about__scale-card--team::before {
  background: #8A7AC2;
}

.page-about__scale-card:hover,
.page-about__scale-card:focus-within {
  border-color: var(--color-neon);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.08);
}

.page-about__scale-num {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px;
}

.page-about__scale-card .data-num {
  font-family: var(--font-data);
  font-size: clamp(34px, 7vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-paper);
  transition: color 0.3s var(--ease), text-shadow 0.3s var(--ease);
}

.page-about__scale-card:hover .data-num,
.page-about__scale-card:focus-within .data-num {
  color: var(--color-neon);
  text-shadow: 0 0 18px rgba(57, 255, 20, 0.35);
}

.page-about__scale-unit {
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--color-silver);
}

.page-about__scale-label {
  margin: 12px 0 3px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-paper);
}

.page-about__scale-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-silver);
}

.page-about__sync {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-top: 24px;
  padding: 20px;
  background-color: rgba(31, 58, 95, 0.6);
  border: 1px solid rgba(192, 192, 192, 0.18);
  font-size: 14px;
  color: var(--color-silver);
}

.page-about__sync .text-data {
  font-family: var(--font-data);
  color: var(--color-neon);
  letter-spacing: 0.08em;
}

/* 04 服务生态 */
.page-about__roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.page-about__role {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 22px;
  margin: 0;
  border: 1px solid rgba(192, 192, 192, 0.18);
  background-color: var(--color-navy);
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about__role:hover,
.page-about__role:focus-within {
  border-color: var(--color-neon);
  background-color: rgba(57, 255, 20, 0.05);
  transform: translateY(-2px);
}

.page-about__role-index {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--color-neon);
}

.page-about__role-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 24px;
  color: var(--color-paper);
}

.page-about__role-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-silver);
}

.page-about__role .link-underline {
  margin-top: auto;
  font-family: var(--font-data);
  font-size: 13px;
}

.page-about__radar {
  margin: 32px 0 0;
}

/* 图片通用 */
.page-about .img-frame {
  width: 100%;
  overflow: hidden;
  background-color: var(--color-navy);
  border: 1px solid rgba(192, 192, 192, 0.25);
}

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

/* 底部坐标转化 */
.page-about__cta {
  position: relative;
  overflow: hidden;
  margin-top: var(--space-section);
  padding: 48px 24px;
  background-color: var(--color-indigo);
  border: 1px solid rgba(192, 192, 192, 0.25);
}

.page-about__cta::before {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 180px;
  height: 180px;
  border: 2px solid rgba(57, 255, 20, 0.28);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about__cta-index {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--color-neon);
}

.page-about__cta-title {
  margin: 10px 0 0;
  font-family: var(--font-heading);
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.25;
  color: var(--color-paper);
}

.page-about__cta-text {
  max-width: 560px;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-silver);
}

.page-about__cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ===== 媒体查询：平板 ===== */
@media (min-width: 768px) {
  .page-about__origin-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about__timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about__scale-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about__roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ===== 媒体查询：桌面 ===== */
@media (min-width: 1024px) {
  .page-about__layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(48px, 6vw, 80px);
  }

  .page-about__aside {
    margin-bottom: 0;
    border-right: 1px solid rgba(192, 192, 192, 0.15);
    padding-right: 24px;
  }

  .page-about__aside-inner {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-about__aside-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    overflow: visible;
  }

  .page-about__aside-link {
    flex: none;
    width: 100%;
    padding: 10px 12px;
    border: none;
    border-left: 2px solid transparent;
    background: transparent;
    font-size: 14px;
  }

  .page-about__aside-link:hover,
  .page-about__aside-link:focus-visible {
    border-left-color: var(--color-neon);
    background: rgba(57, 255, 20, 0.06);
  }

  .page-about__timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about__roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}