/* ── 关于我们 · Hero（对齐首页深色科技风） ── */
.about-hero {
  position: relative;
  min-height: min(72vh, 640px);
  display: flex;
  align-items: center;
  padding: 48px 0 64px;
  background:
    radial-gradient(ellipse 70% 55% at 75% 35%, rgba(37, 99, 235, 0.28) 0%, transparent 58%),
    radial-gradient(ellipse 45% 35% at 12% 75%, rgba(6, 182, 212, 0.14) 0%, transparent 52%),
    linear-gradient(180deg, #030712 0%, #0a1628 50%, #061018 100%);
  overflow: hidden;
}

.about-hero__grid-lines {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(56, 189, 248, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 85% 75% at 50% 40%, #000 20%, transparent 75%);
  pointer-events: none;
}

.about-hero__glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
}

.about-hero__glow--primary {
  width: 420px;
  height: 420px;
  top: -80px;
  right: 8%;
  background: rgba(37, 99, 235, 0.22);
}

.about-hero__glow--secondary {
  width: 280px;
  height: 280px;
  top: 35%;
  left: 5%;
  background: rgba(6, 182, 212, 0.12);
}

.about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 8px 16px 8px 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: rgba(186, 230, 253, 0.95);
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: 999px;
}

.about-hero__badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 12px #22d3ee;
}

.about-hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #f8fafc;
  margin-bottom: 24px;
}

.about-hero__intro p {
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(148, 163, 184, 0.95);
  margin-bottom: 14px;
}

.about-hero__intro p:last-child {
  margin-bottom: 0;
}

.about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.about-hero__video-wrap {
  border-radius: calc(var(--radius-lg) + 4px);
  border: 1px solid rgba(56, 189, 248, 0.22);
  background: rgba(15, 23, 42, 0.6);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  overflow: hidden;
}

.about-hero__video-wrap video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  vertical-align: top;
}

/* ── 愿景使命价值观 ── */
.about-culture {
  padding-top: 72px;
}

.section-head__eyebrow--light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 6px 14px 6px 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: rgba(37, 99, 235, 0.92);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 999px;
}

.section-head__eyebrow--light::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #2563eb;
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.4);
}

.about-culture .section-head h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 600;
  color: var(--color-text-primary);
}

.about-culture__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.about-culture__card {
  position: relative;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: calc(var(--radius-lg) + 2px);
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.04);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.about-culture__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.about-culture__card:hover {
  border-color: rgba(37, 99, 235, 0.28);
  box-shadow: var(--shadow-glow);
}

.about-culture__card:hover::before {
  opacity: 1;
}

.about-culture__tag {
  display: inline-block;
  margin-bottom: 16px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.08);
  border-radius: 999px;
}

.about-culture__card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

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

/* ── 为什么选择我们（深色面板） ── */
.about-why {
  position: relative;
  background: #030712;
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
  overflow: hidden;
}

.about-why::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(56, 189, 248, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 85% 75% at 50% 40%, #000 20%, transparent 75%);
  pointer-events: none;
}

.about-why::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 45% at 50% 0%, rgba(37, 99, 235, 0.16), transparent 58%);
  pointer-events: none;
}

.about-why .container {
  position: relative;
  z-index: 1;
}

.section-head--dark {
  max-width: 640px;
  margin: 0 auto 52px;
  text-align: center;
}

.section-head--dark .section-head__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 6px 14px 6px 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: rgba(186, 230, 253, 0.92);
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: 999px;
}

.section-head--dark .section-head__eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22d3ee;
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.65);
}

.section-head--dark h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, #ffffff 0%, #e2e8f0 52%, #94a3b8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 12px;
}

.section-head--dark p {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(148, 163, 184, 0.95);
}

.about-why__panel {
  background: linear-gradient(165deg, rgba(15, 23, 42, 0.92) 0%, rgba(10, 17, 32, 0.96) 100%);
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: calc(var(--radius-lg) + 4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.about-why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(56, 189, 248, 0.1);
  padding: 1px;
}

.about-why__card {
  display: flex;
  flex-direction: column;
  padding: 28px 24px 24px;
  background: rgba(10, 17, 32, 0.88);
  min-height: 100%;
}

.about-why__card-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.about-why__card-head img {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.about-why__card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: #f1f5f9;
  margin-bottom: 4px;
}

.about-why__subtitle {
  font-size: 0.8125rem;
  color: #22d3ee;
  letter-spacing: 0.04em;
}

.about-why__list {
  flex: 1;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.about-why__list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 10px;
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(148, 163, 184, 0.92);
}

.about-why__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.65);
}

.about-why__highlight {
  padding: 12px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(226, 232, 240, 0.95);
  text-align: center;
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.18);
  border-radius: var(--radius-sm);
}

@media (max-width: 992px) {
  .about-hero__inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .about-hero__media {
    order: -1;
  }

  .about-culture__grid {
    grid-template-columns: 1fr;
  }

  .about-why__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .about-hero {
    min-height: auto;
    padding: 32px 0 52px;
  }

  .about-hero h1 {
    font-size: 1.75rem;
  }

  .about-hero__intro p {
    font-size: 0.9375rem;
  }

  .about-culture {
    padding-top: 64px;
  }

  .about-culture__card {
    padding: 24px 20px;
  }

  .about-why__card {
    padding: 24px 20px 20px;
  }

  .section-head--dark {
    margin-bottom: 36px;
  }
}