/* ===== 品牌档案页 · page-about ===== */
.page-about {
  --about-heading: var(--font-display);
  --about-mono: var(--font-mono);
  --about-accent: var(--accent-green);
  --about-accent2: var(--accent-blue);
  --about-gold: var(--data-gold);
  --about-line: var(--line-grid);
  --about-muted: var(--text-muted);
  --about-secondary: var(--text-secondary);
  background: var(--bg-deep);
  color: var(--text-primary);
}

/* ---------- 首屏 / HERO ---------- */
.page-about .about-hero {
  position: relative;
  padding: 40px 0 64px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(0, 230, 118, 0.10) 0%, transparent 42%),
    linear-gradient(315deg, rgba(0, 176, 255, 0.10) 0%, transparent 48%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 40px;
  margin-top: 40px;
}

.page-about .about-hero__content {
  position: relative;
}

.page-about .about-hero__watermark {
  position: absolute;
  top: -36px;
  right: -12px;
  font-family: var(--font-mono);
  font-size: clamp(6rem, 20vw, 12rem);
  font-weight: 700;
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 230, 118, 0.22);
  pointer-events: none;
  user-select: none;
  z-index: -1;
}

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.26em;
  color: var(--accent-green);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.page-about .about-hero__kicker::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 2px;
  background: var(--accent-green);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  margin: 0 0 20px;
}

.page-about .about-hero__lead {
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 0 32px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__stats {
  padding: 24px;
  background: var(--bg-panel);
  border: 1px solid var(--line-grid);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.page-about .about-hero__stats-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line-grid);
}

.page-about .about-hero__stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-about .about-hero__stats-grid .metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent-blue);
}

.page-about .about-hero__stats-grid .metric:nth-child(odd) {
  border-left-color: var(--accent-green);
}

.page-about .about-hero__stats-grid .metric__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.page-about .about-hero__stats-grid .metric__value {
  font-family: var(--font-mono);
  font-size: 2rem;
  line-height: 1;
  font-weight: 700;
  color: var(--data-gold);
}

.page-about .about-hero__stats-grid .metric__note {
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--text-muted);
}

/* ---------- 通用区块 ---------- */
.page-about .section {
  position: relative;
  padding: 72px 0;
}

.page-about .section-head {
  margin-bottom: 48px;
}

/* ---------- 品牌使命 ---------- */
.page-about .about-mission {
  border-top: 1px solid var(--line-grid);
  background:
    linear-gradient(rgba(42, 47, 66, 0.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 47, 66, 0.28) 1px, transparent 1px);
  background-size: 40px 40px;
}

.page-about .about-mission__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about .about-mission__content {
  position: relative;
  z-index: 1;
}

.page-about .about-mission__para {
  font-size: 1rem;
  line-height: 1.95;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.page-about .about-highlight {
  color: var(--accent-green);
  font-weight: 500;
}

.page-about .about-mission__fact {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  margin-top: 8px;
  padding: 18px 22px;
  background: var(--bg-panel);
  border: 1px solid var(--line-grid);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .about-mission__fact-num {
  font-family: var(--font-mono);
  font-size: 3.25rem;
  font-weight: 700;
  line-height: 1;
  color: var(--data-gold);
}

.page-about .about-mission__fact-label {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.page-about .about-mission__media {
  border: 1px solid var(--line-grid);
  padding: 8px;
  transform: rotate(1deg);
}

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

/* ---------- 数据可信度 ---------- */
.page-about .about-trust {
  border-top: 1px solid var(--line-grid);
  background: var(--bg-deep);
}

.page-about .about-trust::before {
  content: "02";
  position: absolute;
  top: 44px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 6rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(0, 176, 255, 0.07);
  pointer-events: none;
  user-select: none;
}

.page-about .about-trust__grid {
  display: grid;
  gap: 40px;
}

.page-about .about-trust__media {
  position: relative;
  border: 1px solid var(--line-grid);
  padding: 8px;
  background: var(--bg-panel);
}

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

.page-about .about-trust__lead {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.page-about .about-trust__steps {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
}

.page-about .about-trust__step {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-grid);
}

.page-about .about-trust__step-num {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent-blue);
  flex-shrink: 0;
  padding-top: 2px;
}

.page-about .about-trust__step-title {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.page-about .about-trust__step p {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}

.page-about .about-trust__badges {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.page-about .about-trust__badge {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-panel);
  border: 1px solid var(--line-grid);
}

.page-about .about-trust__badge-mark {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--data-gold);
  flex-shrink: 0;
}

.page-about .about-trust__badge-text {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* ---------- 发展里程碑 ---------- */
.page-about .about-milestones {
  border-top: 1px solid var(--line-grid);
  background: var(--bg-panel);
}

.page-about .about-milestones::before {
  content: "03";
  position: absolute;
  top: 44px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 6rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 196, 0, 0.06);
  pointer-events: none;
  user-select: none;
}

.page-about .about-milestones__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-milestones__timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-green) 0%, var(--accent-blue) 55%, var(--data-gold) 100%);
}

.page-about .about-milestones__item {
  position: relative;
  padding: 0 0 40px 32px;
}

.page-about .about-milestones__item:last-child {
  padding-bottom: 0;
}

.page-about .about-milestones__item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 6px;
  width: 12px;
  height: 12px;
  transform: rotate(45deg);
  background: var(--bg-deep);
  border: 2px solid var(--accent-green);
}

.page-about .about-milestones__item:nth-child(even)::before {
  border-color: var(--accent-blue);
}

.page-about .about-milestones__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--data-gold);
  margin-bottom: 8px;
}

.page-about .about-milestones__card {
  padding: 20px;
  background: var(--bg-deep);
  border: 1px solid var(--line-grid);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-about .about-milestones__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-about .about-milestones__card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ---------- 团队与荣誉 ---------- */
.page-about .about-team {
  border-top: 1px solid var(--line-grid);
  background:
    radial-gradient(circle at 80% 20%, rgba(0, 176, 255, 0.08) 0%, transparent 45%),
    var(--bg-deep);
}

.page-about .about-team__grid {
  display: grid;
  gap: 40px;
}

.page-about .about-team__lead {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 32px;
}

.page-about .about-team__roles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}

.page-about .about-team__role {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--line-grid);
}

.page-about .about-team__role-count {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-green);
}

.page-about .about-team__role-name {
  font-size: 0.875rem;
  line-height: 1.4;
  color: var(--text-secondary);
}

.page-about .about-team__honors {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .about-team__honor {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  background: rgba(0, 0, 0, 0.16);
  border: 1px solid var(--line-grid);
}

.page-about .about-team__media {
  border: 1px solid var(--line-grid);
  padding: 8px;
  background: var(--bg-panel);
}

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

/* ---------- 面包屑局部补全 ---------- */
.page-about .about-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 48px;
}

.page-about .about-hero .breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--accent-green);
}

.page-about .about-hero .breadcrumb .breadcrumb__sep {
  color: var(--text-muted);
}

/* ---------- 桌面断点 ---------- */
@media (min-width: 992px) {
  .page-about .about-hero {
    padding: 64px 0 96px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1fr 0.95fr;
    gap: 64px;
    align-items: center;
  }

  .page-about .about-hero__stats {
    padding: 28px;
  }

  .page-about .about-hero__stats-grid {
    gap: 20px;
  }

  .page-about .section {
    padding: 96px 0;
  }

  .page-about .about-mission__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
  }

  .page-about .about-trust__grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .about-trust::before {
    font-size: 8rem;
  }

  .page-about .about-milestones::before {
    font-size: 8rem;
  }

  .page-about .about-milestones__timeline {
    padding-left: 32px;
  }

  .page-about .about-milestones__timeline::before {
    left: 12px;
  }

  .page-about .about-milestones__item {
    padding-left: 56px;
  }

  .page-about .about-milestones__item::before {
    left: 6px;
    width: 14px;
    height: 14px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-team__roles {
    grid-template-columns: repeat(4, 1fr);
  }
}