.page-about {
  --glow-purple: rgba(190, 80, 244, .22);
  --glow-blue: rgba(0, 212, 255, .16);
  --glow-orange: rgba(255, 122, 26, .14);
  background: var(--bg-deep);
  color: var(--ink-main);
}

/* ===== Hero 首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: 2.8rem 0 3.2rem;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  background:
    linear-gradient(135deg, var(--glow-purple), transparent 42%),
    linear-gradient(315deg, var(--glow-blue), transparent 48%),
    var(--bg-deep);
}

.page-about .about-hero::before {
  content: 'SINCE 2018';
  position: absolute;
  right: -2%;
  bottom: 4%;
  font-family: var(--font-display);
  font-size: clamp(3rem, 12vw, 8rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(190, 80, 244, .22);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .85rem;
  color: var(--ink-muted);
  margin-bottom: 1.6rem;
}

.page-about .breadcrumb a {
  color: var(--ink-sub);
  text-decoration: none;
  transition: color .2s ease;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--blue);
}

.page-about .about-toc {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem .6rem;
  margin-bottom: 2rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-toc span {
  color: var(--ink-muted);
  font-size: .75rem;
}

.page-about .about-toc a {
  color: var(--ink-sub);
  text-decoration: none;
  font-size: .82rem;
  padding: .3rem .55rem;
  border: 1px solid transparent;
  border-radius: 3px;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible {
  color: var(--ink-main);
  border-color: var(--line-mid);
  background: var(--bg-panel);
}

.page-about .hero-eyebrow {
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--purple);
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
}

.page-about .hero-eyebrow::before {
  content: '';
  width: 2.2rem;
  height: 2px;
  background: var(--grad-main);
}

.page-about .display-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 9vw, 6rem);
  font-weight: 900;
  line-height: .94;
  letter-spacing: .01em;
  text-transform: uppercase;
  margin: 0 0 1.6rem;
  position: relative;
  z-index: 1;
}

.page-about .display-title span {
  display: block;
  background: linear-gradient(120deg, var(--purple), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-about .hero-lead {
  max-width: 42rem;
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--ink-sub);
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.page-about .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  position: relative;
  z-index: 1;
}

.page-about .hero-meta-item {
  display: inline-flex;
  flex-direction: column;
  padding: .75rem 1rem;
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--rad);
  font-size: .78rem;
  color: var(--ink-muted);
}

.page-about .hero-meta-item strong {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  color: var(--ink-main);
  margin-bottom: .1rem;
}

/* ===== 品牌起源 ===== */
.page-about .about-origin {
  padding: 4.2rem 0;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-dark);
}

.page-about .origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.4rem;
  align-items: center;
}

.page-about .about-origin .eyebrow,
.page-about .about-milestones .eyebrow,
.page-about .about-cert .eyebrow,
.page-about .about-team .eyebrow,
.page-about .about-partners .eyebrow,
.page-about .about-awards .eyebrow {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: .75rem;
}

.page-about .about-origin .eyebrow {
  color: var(--orange);
}

.page-about .about-origin .section-title,
.page-about .about-milestones .section-title,
.page-about .about-cert .section-title,
.page-about .about-team .section-title,
.page-about .about-partners .section-title,
.page-about .about-awards .section-title,
.page-about .about-cta .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1.12;
  margin-bottom: 1.3rem;
  color: var(--ink-main);
}

.page-about .about-origin p {
  color: var(--ink-sub);
  line-height: 1.8;
  margin-bottom: 1rem;
  font-size: .95rem;
}

.page-about .about-origin .btn {
  margin-top: 1.2rem;
}

.page-about .origin-visual {
  position: relative;
}

.page-about .origin-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--line-mid);
  border-radius: var(--rad);
  transform: translate(12px, 12px);
  z-index: 0;
  background: linear-gradient(135deg, var(--glow-purple), var(--glow-blue));
}

.page-about .origin-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--rad);
  border: 1px solid var(--line-mid);
  box-shadow: var(--shadow-card);
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  padding: 4.2rem 0;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-milestones .section-head,
.page-about .about-cert .section-head,
.page-about .about-partners .section-head,
.page-about .about-awards .section-head {
  margin-bottom: 2.2rem;
}

.page-about .milestone-wrap {
  position: relative;
  max-width: 46rem;
  margin-left: 0;
}

.page-about .milestone-line {
  position: absolute;
  top: .75rem;
  bottom: .75rem;
  left: 7px;
  width: 2px;
  background: linear-gradient(to bottom, var(--purple), var(--blue), var(--orange));
  opacity: .5;
}

.page-about .timeline {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .milestone-item {
  position: relative;
  padding-left: 2.4rem;
  display: grid;
  gap: .35rem;
}

.page-about .milestone-item::before {
  content: '';
  position: absolute;
  left: 1px;
  top: .55rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--purple);
  box-shadow: 0 0 14px rgba(190, 80, 244, .5);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.page-about .milestone-item:nth-child(n+3):nth-child(-n+4)::before {
  border-color: var(--blue);
  box-shadow: 0 0 14px rgba(0, 212, 255, .5);
}

.page-about .milestone-item:nth-child(n+5)::before {
  border-color: var(--orange);
  box-shadow: 0 0 14px rgba(255, 122, 26, .5);
}

.page-about .milestone-item:hover::before,
.page-about .milestone-item:focus-within::before {
  transform: scale(1.2);
  border-color: var(--ink-main);
}

.page-about .milestone-year {
  font-family: var(--font-display);
  font-size: 1.6rem;
  line-height: 1;
  color: var(--purple);
}

.page-about .milestone-item:nth-child(n+3):nth-child(-n+4) .milestone-year {
  color: var(--blue);
}

.page-about .milestone-item:nth-child(n+5) .milestone-year {
  color: var(--orange);
}

.page-about .milestone-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-main);
  margin-bottom: .3rem;
}

.page-about .milestone-content p {
  color: var(--ink-sub);
  font-size: .92rem;
  line-height: 1.7;
  margin: 0;
  max-width: 34rem;
}

.page-about .milestone-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--rad);
  border: 1px solid var(--line-mid);
  margin-top: 3rem;
  box-shadow: var(--shadow-card);
}

/* ===== 资质认证 ===== */
.page-about .about-cert {
  padding: 4.2rem 0;
  border-bottom: 1px solid var(--line-soft);
  background:
    linear-gradient(180deg, var(--glow-purple), transparent 60%),
    var(--bg-dark);
}

.page-about .cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.page-about .cert-card {
  position: relative;
  padding: 1.8rem 1.4rem;
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--rad);
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}

.page-about .cert-card:hover,
.page-about .cert-card:focus-within {
  border-color: rgba(190, 80, 244, .45);
  box-shadow: 0 0 24px rgba(190, 80, 244, .14);
  transform: translateY(-3px);
}

.page-about .cert-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  padding: .28rem .6rem;
  background: linear-gradient(135deg, rgba(190, 80, 244, .16), rgba(0, 212, 255, .12));
  color: var(--blue);
  border: 1px solid rgba(190, 80, 244, .3);
  border-radius: 3px;
  margin-bottom: 1.1rem;
  transform: skewX(-8deg);
}

.page-about .cert-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: .6rem;
  color: var(--ink-main);
}

.page-about .cert-card p {
  color: var(--ink-sub);
  font-size: .92rem;
  line-height: 1.7;
  margin: 0;
}

/* ===== 团队与组织 ===== */
.page-about .about-team {
  padding: 4.2rem 0;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(circle at 70% 40%, rgba(190, 80, 244, .08), transparent 45%),
    var(--bg-deep);
}

.page-about .team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.2rem;
}

.page-about .team-head > p:not(.eyebrow) {
  color: var(--ink-sub);
  line-height: 1.8;
  font-size: .95rem;
}

.page-about .team-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .8rem;
}

.page-about .team-stat {
  padding: 1.4rem .9rem;
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--rad);
  text-align: center;
  transition: border-color .25s ease, transform .25s ease;
}

.page-about .team-stat:hover {
  border-color: var(--line-mid);
  transform: translateY(-2px);
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-about .stat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--ink-main);
  margin-top: .5rem;
  letter-spacing: .08em;
}

.page-about .stat-desc {
  display: block;
  font-size: .76rem;
  color: var(--ink-muted);
  line-height: 1.55;
  margin-top: .4rem;
}

/* ===== 合作生态 ===== */
.page-about .about-partners {
  padding: 4.2rem 0;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(circle at 30% 60%, rgba(0, 212, 255, .07), transparent 50%),
    var(--bg-dark);
}

.page-about .partners-intro {
  max-width: 40rem;
  color: var(--ink-sub);
  line-height: 1.8;
  font-size: .95rem;
  margin-bottom: 0;
}

.page-about .partner-visual {
  position: relative;
  max-width: 440px;
  margin: 2rem auto 1.5rem;
}

.page-about .partner-visual::after {
  content: '';
  position: absolute;
  inset: -12px;
  border: 1px dashed rgba(0, 212, 255, .3);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .partner-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--line-mid);
  box-shadow: 0 0 32px rgba(0, 212, 255, .14), var(--shadow-card);
}

.page-about .partner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  justify-content: center;
  margin-top: 1.6rem;
}

.page-about .partner-tag {
  font-family: var(--font-mono);
  font-size: .78rem;
  padding: .42rem .85rem;
  border: 1px solid var(--line-mid);
  border-radius: 999px;
  color: var(--ink-sub);
  background: var(--bg-panel);
  transition: border-color .2s ease, color .2s ease, background .2s ease, transform .2s ease;
}

.page-about .partner-tag:hover,
.page-about .partner-tag:focus-visible {
  border-color: var(--blue);
  color: var(--blue);
  background: rgba(0, 212, 255, .06);
  transform: translateY(-2px);
}

/* ===== 行业荣誉 ===== */
.page-about .about-awards {
  padding: 4.2rem 0;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-deep);
}

.page-about .awards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.page-about .award-card {
  position: relative;
  padding: 1.8rem 1.6rem 1.8rem 1.8rem;
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--rad);
  overflow: hidden;
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}

.page-about .award-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--grad-hot);
}

.page-about .award-card:hover,
.page-about .award-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--line-mid);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .4);
}

.page-about .award-year {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-about .award-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: .55rem 0 .7rem;
  color: var(--ink-main);
}

.page-about .award-card p {
  color: var(--ink-sub);
  line-height: 1.7;
  font-size: .92rem;
  margin: 0;
}

/* ===== CTA ===== */
.page-about .about-cta {
  padding: 3.6rem 0 4.4rem;
  background:
    linear-gradient(135deg, var(--glow-purple), var(--glow-blue)),
    var(--bg-deep);
}

.page-about .about-cta .section-title {
  margin-bottom: .6rem;
}

.page-about .about-cta p {
  color: var(--ink-sub);
  max-width: 34rem;
  margin-bottom: 1.8rem;
  line-height: 1.7;
  font-size: .95rem;
}

.page-about .cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 4.5rem 0 4.8rem;
  }

  .page-about .hero-lead {
    font-size: 1.15rem;
  }

  .page-about .about-origin,
  .page-about .about-milestones,
  .page-about .about-cert,
  .page-about .about-team,
  .page-about .about-partners,
  .page-about .about-awards {
    padding: 5.5rem 0;
  }

  .page-about .origin-grid {
    grid-template-columns: 1.15fr .85fr;
    gap: 3.2rem;
  }

  .page-about .about-origin p {
    font-size: 1rem;
  }

  .page-about .milestone-wrap {
    margin-left: auto;
    margin-right: auto;
  }

  .page-about .team-layout {
    grid-template-columns: .85fr 1.15fr;
    gap: 3.6rem;
    align-items: start;
  }

  .page-about .team-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: .9rem;
  }

  .page-about .team-stat {
    padding: 1.6rem .8rem;
  }

  .page-about .stat-num {
    font-size: 2.3rem;
  }

  .page-about .partner-visual {
    max-width: 520px;
    margin-top: 2.8rem;
    margin-bottom: 1.6rem;
  }

  .page-about .about-cta {
    padding: 5rem 0 6rem;
  }

  .page-about .cta-links {
    gap: 1rem;
  }
}

@media (min-width: 640px) {
  .page-about .cert-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
  }

  .page-about .awards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.4rem;
  }
}