/* ===== 品牌概况页专属样式 ===== */
.page-about {
  --about-orange-glow: rgba(255, 90, 0, 0.28);
  --about-neon-soft: rgba(198, 255, 0, 0.14);
  --about-card-bg: rgba(255, 255, 255, 0.045);
  --about-card-border: rgba(255, 255, 255, 0.1);
  --about-timeline-line: linear-gradient(
    180deg,
    var(--color-orange) 0%,
    var(--color-neon-green) 55%,
    var(--color-teal) 100%
  );
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: var(--space-4);
}

/* ---------- Hero ---------- */
.page-about__hero {
  position: relative;
  padding-top: var(--space-4);
  padding-bottom: var(--space-6);
}

.page-about__hero-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(18, 42, 90, 0.92) 0%, var(--color-space-blue) 68%);
  padding: var(--space-5) var(--space-4) var(--space-4);
}

.page-about__hero-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 220px;
  height: 100%;
  background: repeating-linear-gradient(
    -45deg,
    rgba(255, 90, 0, 0.2) 0 10px,
    transparent 10px 22px
  );
  -webkit-mask-image: linear-gradient(to left, #000 0%, transparent 100%);
  mask-image: linear-gradient(to left, #000 0%, transparent 100%);
  pointer-events: none;
}

.page-about__hero-card::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-neon-green), var(--color-teal));
}

.page-about__hero-index {
  display: inline-block;
  font-family: var(--font-index);
  font-size: var(--text-index);
  font-weight: 300;
  letter-spacing: 0.14em;
  color: var(--color-neon-green);
  border: 1px solid rgba(198, 255, 0, 0.35);
  border-radius: var(--radius-pill);
  padding: 5px 14px;
  background: var(--about-neon-soft);
  margin-bottom: var(--space-4);
}

.page-about__hero h1 {
  font-family: var(--font-headline);
  font-size: var(--text-h1);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-2);
}

.page-about__hero-lead {
  font-family: var(--font-headline);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-orange-light);
  margin: 0 0 var(--space-3);
}

.page-about__hero-desc {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 38em;
  margin: 0 0 var(--space-5);
}

.page-about__hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  border-top: 1px solid rgba(46, 65, 104, 0.75);
  padding-top: var(--space-4);
}

.page-about__hero-stat {
  padding: var(--space-1) 0;
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-headline);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 800;
  line-height: 1;
  color: var(--color-orange);
}

.page-about__stat-label {
  display: block;
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--color-text-secondary);
  margin-top: 6px;
}

/* ---------- 我们是谁 ---------- */
.page-about__intro {
  padding-top: var(--space-6);
  padding-bottom: var(--space-7);
}

.page-about__intro-grid {
  display: grid;
  gap: var(--space-6);
}

.page-about__intro-copy p {
  font-size: var(--text-body);
  line-height: 1.8;
  color: var(--color-text-light);
  opacity: 0.88;
  margin-bottom: var(--space-4);
}

.page-about__values {
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: 0;
}

.page-about__values li {
  position: relative;
  border-left: 3px solid var(--color-orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--about-card-bg);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-3);
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    background var(--transition-base);
}

.page-about__values li:hover {
  transform: translateX(4px);
  border-left-color: var(--color-neon-green);
  background: rgba(255, 255, 255, 0.08);
}

.page-about__values strong {
  display: block;
  font-family: var(--font-headline);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--color-neon-green);
  margin-bottom: 4px;
}

.page-about__values span {
  display: block;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.page-about__intro-media {
  position: relative;
}

.page-about__intro-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-space-blue-deep);
  box-shadow: var(--shadow-card);
}

.page-about__intro-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, transparent 58%, rgba(11, 27, 61, 0.72) 100%);
  pointer-events: none;
}

.page-about__intro-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transform: scale(1.01);
}

.page-about__intro-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

/* ---------- 发展里程碑 ---------- */
.page-about__milestones {
  position: relative;
  overflow: hidden;
  padding-top: var(--space-7);
  padding-bottom: var(--space-7);
}

.page-about__milestones .section__title,
.page-about__milestones .section__subtitle {
  color: var(--color-text-light);
}

.page-about__timeline {
  position: relative;
  margin-top: var(--space-6);
  padding-left: var(--space-5);
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--about-timeline-line);
}

.page-about__timeline-item {
  position: relative;
  margin-bottom: var(--space-5);
  padding-left: var(--space-4);
}

.page-about__timeline-dot {
  position: absolute;
  left: calc(-1 * var(--space-5) + 1px);
  top: 16px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-space-blue);
  border: 4px solid var(--color-orange);
  box-shadow:
    0 0 0 5px var(--about-orange-glow),
    0 0 0 9px rgba(255, 90, 0, 0.1);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.page-about__timeline-item:hover .page-about__timeline-dot {
  transform: scale(1.18);
  box-shadow:
    0 0 0 6px var(--about-orange-glow),
    0 0 0 14px rgba(255, 90, 0, 0.12);
}

.page-about__timeline-card {
  border: 1px solid var(--about-card-border);
  border-radius: var(--radius-md);
  background: rgba(7, 17, 38, 0.5);
  padding: var(--space-4);
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.page-about__timeline-item:hover .page-about__timeline-card {
  transform: translateY(-3px);
  border-color: rgba(255, 90, 0, 0.55);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

.page-about__timeline-phase {
  display: inline-block;
  font-family: var(--font-index);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-neon-green);
  background: var(--about-neon-soft);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  margin-bottom: var(--space-2);
}

.page-about__timeline-card h3 {
  font-family: var(--font-headline);
  font-size: var(--text-h3);
  font-weight: 700;
  color: var(--color-text-light);
  margin: 0 0 var(--space-2);
}

.page-about__timeline-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0;
}

.page-about__timeline-art {
  position: absolute;
  right: -24px;
  bottom: 32px;
  width: 200px;
  max-width: 42%;
  height: auto;
  border-radius: var(--radius-md);
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

.page-about__milestones .container {
  position: relative;
  z-index: 1;
}

/* ---------- 数据与服务原则 ---------- */
.page-about__principles {
  padding-top: var(--space-7);
  padding-bottom: var(--space-7);
}

.page-about__principles .section__title {
  color: var(--color-text-light);
}

.page-about__principles-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-about__principle-card {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(11, 27, 61, 0.32);
  padding: var(--space-5) var(--space-4);
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.page-about__principle-card:hover {
  transform: translateY(-4px);
  border-color: rgba(198, 255, 0, 0.45);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.24);
}

.page-about__principle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 18px;
  font-family: var(--font-headline);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-space-blue);
  background: var(--color-neon-green);
  transform: skewX(-8deg);
  margin-bottom: var(--space-4);
}

.page-about__principle-card h3 {
  font-family: var(--font-headline);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-light);
  margin: 0 0 var(--space-2);
}

.page-about__principle-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ---------- 资质与认可 ---------- */
.page-about__credentials {
  padding-top: var(--space-7);
  padding-bottom: var(--space-7);
}

.page-about__credentials-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-about__credential-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--about-card-bg);
  padding: var(--space-5) var(--space-4);
  transition:
    transform var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.page-about__credential-card:hover {
  transform: translateY(-5px) rotateX(1.5deg) rotateY(-1.5deg);
  border-color: var(--color-orange);
  box-shadow:
    0 16px 40px rgba(0, 0, 0, 0.32),
    0 0 0 1px rgba(255, 90, 0, 0.28);
}

.page-about__credential-card img {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid rgba(198, 255, 0, 0.5);
  margin-bottom: var(--space-4);
}

.page-about__credential-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 24px;
  transform: skewX(-8deg) rotate(-3deg);
  font-family: var(--font-headline);
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--color-space-blue);
  background: linear-gradient(135deg, var(--color-orange), var(--color-orange-light));
  margin-bottom: var(--space-4);
}

.page-about__credential-card h3 {
  font-family: var(--font-headline);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-light);
  margin: 0 0 var(--space-2);
}

.page-about__credential-card p {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-3);
}

.page-about__credential-id {
  font-family: var(--font-headline);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-neon-green);
  letter-spacing: 0.02em;
}

.page-about__credential-card .tag {
  margin-top: auto;
}

/* ---------- CTA ---------- */
.page-about__cta {
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
}

.page-about__cta-inner {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(120deg, rgba(18, 42, 90, 0.9), var(--color-space-blue));
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.page-about__cta-inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-neon-green));
}

.page-about__cta-copy {
  position: relative;
}

.page-about__cta-index {
  display: inline-block;
  font-family: var(--font-index);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-orange-light);
  margin-bottom: var(--space-2);
}

.page-about__cta-copy h2 {
  font-family: var(--font-headline);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 800;
  color: var(--color-text-light);
  margin: 0 0 var(--space-2);
}

.page-about__cta-copy p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0;
}

.page-about__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ---------- 响应式增强 ---------- */
@media (min-width: 768px) {
  .page-about__hero-card {
    padding: var(--space-6) var(--space-6) var(--space-5);
  }

  .page-about__hero-desc {
    font-size: 1rem;
  }

  .page-about__intro-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: var(--space-6);
    align-items: center;
  }

  .page-about__intro-copy {
    padding-right: var(--space-5);
  }

  .page-about__intro-media {
    padding-left: var(--space-4);
  }

  .page-about__timeline {
    padding-left: 0;
  }

  .page-about__timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about__timeline-item {
    width: 50%;
    padding: 0 var(--space-6) var(--space-5) 0;
  }

  .page-about__timeline-item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 var(--space-5) var(--space-6);
  }

  .page-about__timeline-dot {
    left: auto;
    right: -42px;
  }

  .page-about__timeline-item:nth-child(even) .page-about__timeline-dot {
    right: auto;
    left: -42px;
  }

  .page-about__principles-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-5);
  }

  .page-about__principle-card {
    padding: var(--space-6) var(--space-5);
  }

  .page-about__credentials-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-5);
  }

  .page-about__cta-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6) var(--space-6);
  }

  .page-about__cta-copy {
    max-width: 56%;
  }
}

@media (min-width: 1024px) {
  .page-about__credentials-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about__credentials-grid .page-about__credential-card {
    min-height: 320px;
  }

  .page-about__credential-card h3 {
    min-height: 46px;
  }

  .page-about__hero-stats {
    gap: var(--space-5);
  }

  .page-about__intro-grid {
    gap: var(--space-7);
  }
}