.page-about {
  --about-card-radius: 6px;
  --about-gold-glow: rgba(245, 197, 24, 0.08);
  --about-gold-border: rgba(245, 197, 24, 0.32);
}

.page-about .breadcrumb {
  padding-top: 18px;
  padding-bottom: 0;
  margin-bottom: 0;
}

/* ---------- 通栏品牌叙事 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 15% 25%, var(--about-gold-glow), transparent 46%),
    linear-gradient(135deg, var(--color-bg-deep) 0%, var(--color-bg-panel) 84%);
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), transparent 60%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: 12%;
  width: 260px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  transform: rotate(-18deg);
  opacity: 0.3;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 56px;
}

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

.page-about .about-hero h1 {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 16px 0 20px;
  color: var(--color-text);
}

.page-about .about-hero__lead {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.8;
  color: var(--color-text-sub);
  max-width: 620px;
  margin-bottom: 32px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--about-card-radius);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--about-gold-border);
}

/* ---------- 平台简介 ---------- */
.page-about .about-overview {
  border-bottom: 1px solid var(--color-line);
}

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

.page-about .about-overview__text p,
.page-about .about-credentials__content p,
.page-about .about-culture__content p,
.page-about .about-cta p {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text-sub);
}

.page-about .about-overview__text p + p {
  margin-top: 16px;
}

.page-about .about-overview__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.page-about .stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-line);
  border-radius: var(--about-card-radius);
  padding: 24px 20px;
  position: relative;
  overflow: hidden;
}

.page-about .stat-card::after {
  content: "";
  position: absolute;
  right: -18px;
  bottom: -18px;
  width: 56px;
  height: 56px;
  border: 1px solid var(--color-gold);
  transform: rotate(45deg);
  opacity: 0.18;
}

.page-about .stat-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1.2;
}

.page-about .stat-card__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-sub);
}

/* ---------- 章节标题 ---------- */
.page-about .about-milestones__head h2,
.page-about .about-team__head h2,
.page-about .about-credentials__content h2,
.page-about .about-culture__content h2,
.page-about .about-cta h2 {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.2;
  margin: 14px 0 18px;
  color: var(--color-text);
}

.page-about .about-milestones__head .section__lead,
.page-about .about-team__head .section__lead {
  max-width: 560px;
}

/* ---------- 发展里程碑 ---------- */
.page-about .about-milestones {
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-milestones__figure {
  margin: 0 0 32px;
}

.page-about .about-milestones__figure img,
.page-about .about-culture__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--about-card-radius);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--color-line);
}

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

.page-about .timeline-track {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 4px 0 8px 32px;
}

.page-about .timeline-track::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold), rgba(245, 197, 24, 0.35) 40%, var(--color-line));
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 34px;
}

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

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-bg-deep);
  border: 2px solid var(--color-gold);
  box-shadow: 0 0 0 4px rgba(245, 197, 24, 0.12);
}

.page-about .timeline-item__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  background: rgba(245, 197, 24, 0.1);
  border: 1px solid var(--about-gold-border);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.page-about .timeline-item h3 {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--color-text);
}

.page-about .timeline-item p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-sub);
  max-width: 420px;
}

.page-about .timeline-hint {
  display: none;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-text-sub);
  letter-spacing: 0.05em;
}

/* ---------- 团队与组织 ---------- */
.page-about .about-team {
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-team__cell {
  border-radius: var(--about-card-radius);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.page-about .about-team__cell:hover {
  transform: translateY(-4px);
  border-color: var(--about-gold-border);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.page-about .about-team__card {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 220px;
  padding: 26px 24px;
}

.page-about .about-team__role {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.page-about .about-team__number {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1.1;
  margin: 12px 0 16px;
}

.page-about .about-team__desc {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-sub);
  margin-top: auto;
  max-width: 480px;
}

/* ---------- 资质与承诺 ---------- */
.page-about .about-credentials {
  background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-panel) 100%);
  border-bottom: 1px solid var(--color-line);
}

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

.page-about .about-credentials__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-credentials__list li {
  position: relative;
  padding-left: 24px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-sub);
}

.page-about .about-credentials__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 12px;
  height: 2px;
  background: var(--color-gold);
}

.page-about .about-credentials__badges {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .credential-badge {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--about-gold-border);
  border-radius: var(--about-card-radius);
  padding: 22px 16px 18px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  overflow: hidden;
}

.page-about .credential-badge::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 6px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245, 197, 24, 0.4), transparent);
}

.page-about .credential-badge__icon {
  font-size: 28px;
  color: var(--color-gold);
  line-height: 1;
}

.page-about .credential-badge__title {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 15px;
  color: var(--color-text);
}

.page-about .credential-badge__desc {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-sub);
}

/* ---------- 企业文化 ---------- */
.page-about .about-culture {
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-culture__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .about-culture__figure {
  margin: 0;
}

.page-about .about-culture__principles {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 底部行动区 ---------- */
.page-about .about-cta__inner {
  background: linear-gradient(135deg, rgba(245, 197, 24, 0.16), rgba(255, 140, 66, 0.08));
  border: 1px solid var(--about-gold-border);
  border-radius: var(--about-card-radius);
  padding: 48px 28px;
  text-align: center;
}

.page-about .about-cta h2 {
  margin-top: 0;
}

.page-about .about-cta p {
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 56px;
    padding-top: 72px;
    padding-bottom: 88px;
  }

  .page-about .about-overview__grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
    align-items: center;
  }

  .page-about .about-credentials__grid {
    grid-template-columns: 1fr 1fr;
    gap: 60px;
  }

  .page-about .about-credentials__badges {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-culture__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
  }
}

@media (min-width: 900px) {
  .page-about .about-milestones__scroll {
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
  }

  .page-about .timeline-track {
    flex-direction: row;
    gap: 0;
    min-width: max-content;
    padding: 24px 16px 4px;
  }

  .page-about .timeline-track::before {
    left: 16px;
    right: 16px;
    top: 24px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gold) 0%, rgba(245, 197, 24, 0.35) 35%, var(--color-line) 100%);
  }

  .page-about .timeline-item {
    width: 240px;
    padding: 24px 20px 0;
  }

  .page-about .timeline-item::before {
    left: 20px;
    top: 17px;
  }

  .page-about .timeline-hint {
    display: block;
    margin-top: 12px;
    text-align: right;
  }
}