.page-about {
  --about-hero-min-height: 520px;
  --about-spirit-glow: rgba(244, 196, 48, 0.35);
  --about-card-radius: 12px;
}

/* ── 面包屑 ── */
.page-about .breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg) 0;
}
.page-about .breadcrumb ol {
  list-style: none;
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  padding: 0;
  margin: 0;
}
.page-about .breadcrumb li {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-gray-mid);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.page-about .breadcrumb li + li::before {
  content: "›";
  color: var(--color-gold);
  font-weight: 700;
}
.page-about .breadcrumb a {
  color: var(--color-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-about .breadcrumb a:hover {
  color: var(--color-red);
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--color-white);
  font-weight: 600;
}

/* ── 首屏英雄区 ── */
.page-about .hero-about {
  position: relative;
  min-height: var(--about-hero-min-height);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-black);
}
.page-about .hero-about-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-about .hero-about-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.page-about .hero-about-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(0,0,0,0.70) 0%, rgba(26,26,26,0.85) 100%);
}
.page-about .hero-about-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}
.page-about .hero-about-title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 2.75rem;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--color-white);
  margin: 0 0 var(--space-sm);
  text-shadow: 0 2px 20px rgba(0,0,0,0.6);
}
.page-about .hero-about-subtitle {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-gold);
  margin: 0 0 var(--space-md);
  letter-spacing: 2px;
  text-shadow: 0 2px 12px rgba(244,196,48,0.25);
}
.page-about .hero-about-desc {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--color-gray-light);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
  opacity: 0.9;
}

/* ── 品牌精神区 ── */
.page-about .spirit-section {
  background: var(--color-black);
  position: relative;
  overflow: hidden;
  padding: var(--space-2xl) 0;
}
.page-about .spirit-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.page-about .spirit-deco-text {
  position: absolute;
  top: -0.15em;
  right: -0.08em;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 10rem;
  line-height: 1;
  color: rgba(211,47,47,0.08);
  text-transform: uppercase;
  letter-spacing: 12px;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}
.page-about .spirit-body {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
  align-items: center;
  position: relative;
  z-index: 1;
}
.page-about .spirit-text {
  flex: 1 1 360px;
}
.page-about .spirit-text h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 2.25rem;
  text-transform: uppercase;
  color: var(--color-red);
  margin: 0 0 var(--space-lg);
  letter-spacing: 2px;
  position: relative;
  display: inline-block;
}
.page-about .spirit-text h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--gradient-gold);
  margin-top: var(--space-sm);
}
.page-about .spirit-lead {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--color-gold-light);
  line-height: 1.7;
  margin: 0 0 var(--space-md);
  font-weight: 600;
}
.page-about .spirit-text p {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-gray-light);
  line-height: 1.8;
  margin: 0 0 var(--space-md);
  opacity: 0.9;
}
.page-about .spirit-signature {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.page-about .spirit-signature-line {
  flex: 1;
  height: 1px;
  background: var(--gradient-gold);
  max-width: 80px;
}
.page-about .spirit-signature-text {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-gold);
  letter-spacing: 1px;
  white-space: nowrap;
}
.page-about .spirit-visual {
  flex: 0 1 280px;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  position: relative;
}
.page-about .spirit-visual-shape {
  width: 100%;
  height: 60px;
  border-radius: 6px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.page-about .spirit-visual-shape.shape-red {
  background: var(--color-red);
  width: 80%;
}
.page-about .spirit-visual-shape.shape-black {
  background: #2a2a2a;
  border: 1px solid #444;
  width: 90%;
}
.page-about .spirit-visual-shape.shape-gold {
  background: var(--gradient-gold);
  width: 70%;
}
.page-about .spirit-visual-shape:hover {
  transform: scale(1.04);
  box-shadow: 0 0 24px var(--about-spirit-glow);
}

/* 发光边框呼吸效果 (hover) */
.page-about .spirit-border-glow {
  position: absolute;
  inset: -4px;
  border: 2px solid transparent;
  border-radius: 16px;
  pointer-events: none;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  z-index: 0;
}
.page-about .spirit-inner:hover .spirit-border-glow {
  border-color: var(--color-gold);
  box-shadow: 0 0 32px var(--about-spirit-glow), inset 0 0 32px rgba(244,196,48,0.04);
}

/* ── 我们服务谁 ── */
.page-about .audience-section {
  background: var(--color-gray-light);
  padding: var(--space-2xl) 0;
}
.page-about .audience-section h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 2rem;
  text-transform: uppercase;
  color: var(--color-black);
  margin: 0 0 var(--space-sm);
  letter-spacing: 2px;
}
.page-about .audience-intro {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: #555;
  margin: 0 0 var(--space-xl);
  max-width: 520px;
  line-height: 1.7;
}
.page-about .audience-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
  align-items: flex-start;
}
.page-about .audience-image {
  flex: 1 1 300px;
  border-radius: var(--about-card-radius);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}
.page-about .audience-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}
.page-about .audience-detail {
  flex: 1 1 300px;
}
.page-about .audience-tags {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.page-about .audience-tag-item {
  border: 1px solid #ddd;
  border-radius: var(--about-card-radius);
  overflow: hidden;
  background: var(--color-white);
  transition: box-shadow var(--transition-fast);
}
.page-about .audience-tag-item:hover {
  box-shadow: 0 4px 16px rgba(211,47,47,0.12);
}
.page-about .audience-tag-toggle {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}
.page-about .audience-tag-label {
  display: block;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-black);
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
  user-select: none;
}
.page-about .audience-tag-label::after {
  content: '+';
  position: absolute;
  right: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  color: var(--color-red);
  font-weight: 700;
  transition: transform var(--transition-fast);
}
.page-about .audience-tag-toggle:checked + .audience-tag-label {
  color: var(--color-red);
  background: rgba(211,47,47,0.04);
}
.page-about .audience-tag-toggle:checked + .audience-tag-label::after {
  content: '–';
  transform: translateY(-50%) rotate(180deg);
}
.page-about .audience-tag-desc {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 var(--space-lg);
  background: var(--color-white);
}
.page-about .audience-tag-desc p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: #555;
  line-height: 1.7;
  margin: 0;
  padding-bottom: var(--space-md);
}
.page-about .audience-tag-toggle:checked ~ .audience-tag-desc {
  max-height: 240px;
  padding: var(--space-sm) var(--space-lg) var(--space-md);
}

/* ── 我们的优势 ── */
.page-about .advantage-section {
  background: var(--color-black);
  padding: var(--space-2xl) 0;
}
.page-about .advantage-section h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 2rem;
  text-transform: uppercase;
  color: var(--color-white);
  margin: 0 0 var(--space-xl);
  letter-spacing: 2px;
  text-align: center;
}
.page-about .advantage-section h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--gradient-gold);
  margin: var(--space-sm) auto 0;
}
.page-about .advantage-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: center;
}
.page-about .advantage-card {
  flex: 1 1 280px;
  max-width: 360px;
  background: #222;
  border-radius: var(--about-card-radius);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}
.page-about .advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(211,47,47,0.25);
}
.page-about .advantage-card-featured {
  flex: 1 1 320px;
  max-width: 400px;
}
.page-about .advantage-card-img {
  width: 100%;
  overflow: hidden;
}
.page-about .advantage-card-img img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  transition: transform var(--transition-base);
}
.page-about .advantage-card:hover .advantage-card-img img {
  transform: scale(1.03);
}
.page-about .advantage-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.page-about .advantage-card-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-sm);
  line-height: 1;
}
.page-about .advantage-card-body h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-gold);
  text-transform: uppercase;
  margin: 0 0 var(--space-sm);
  letter-spacing: 1px;
}
.page-about .advantage-card-body p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-gray-light);
  line-height: 1.7;
  margin: 0;
  opacity: 0.85;
}
.page-about .advantage-card-accent {
  height: 4px;
  background: var(--gradient-gold);
  width: 0;
  transition: width var(--transition-base);
}
.page-about .advantage-card:hover .advantage-card-accent {
  width: 100%;
}

/* ── CTA 区域 ── */
.page-about .cta-about-section {
  background: var(--color-red);
  padding: var(--space-2xl) 0;
}
.page-about .cta-about-inner {
  text-align: center;
}
.page-about .cta-about-text {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-white);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  opacity: 0.95;
}
.page-about .cta-about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}
.page-about .cta-about-actions .btn {
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 6px;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.page-about .cta-about-actions .btn-primary {
  background: var(--color-black);
  color: var(--color-white);
  border: 2px solid var(--color-black);
}
.page-about .cta-about-actions .btn-primary:hover {
  background: var(--color-dark-red);
  border-color: var(--color-dark-red);
}
.page-about .cta-about-actions .btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}
.page-about .cta-about-actions .btn-secondary:hover {
  background: var(--color-white);
  color: var(--color-red);
}

/* ── 响应式 ── */
@media (max-width: 640px) {
  .page-about {
    --about-hero-min-height: 380px;
  }
  .page-about .breadcrumb {
    padding: var(--space-sm) var(--space-md) 0;
  }
  .page-about .hero-about-title {
    font-size: 1.75rem;
    letter-spacing: 2px;
  }
  .page-about .hero-about-subtitle {
    font-size: 1.125rem;
  }
  .page-about .hero-about-desc {
    font-size: 0.95rem;
  }
  .page-about .hero-about-content {
    padding: var(--space-xl) var(--space-md);
  }
  .page-about .spirit-section {
    padding: var(--space-xl) 0;
  }
  .page-about .spirit-inner {
    padding: 0 var(--space-md);
  }
  .page-about .spirit-deco-text {
    font-size: 4.5rem;
    top: -0.1em;
    right: 0;
  }
  .page-about .spirit-text h2 {
    font-size: 1.6rem;
  }
  .page-about .spirit-signature-text {
    font-size: 1rem;
  }
  .page-about .spirit-visual {
    flex-basis: 100%;
    flex-direction: row;
    justify-content: center;
  }
  .page-about .spirit-visual-shape {
    height: 40px;
  }
  .page-about .audience-section {
    padding: var(--space-xl) 0;
  }
  .page-about .audience-section h2 {
    font-size: 1.5rem;
  }
  .page-about .audience-grid {
    gap: var(--space-lg);
  }
  .page-about .audience-tag-label {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.95rem;
  }
  .page-about .audience-tag-label::after {
    right: var(--space-md);
  }
  .page-about .audience-tag-desc {
    padding: 0 var(--space-md);
  }
  .page-about .audience-tag-toggle:checked ~ .audience-tag-desc {
    padding: var(--space-sm) var(--space-md) var(--space-md);
  }
  .page-about .advantage-section {
    padding: var(--space-xl) 0;
  }
  .page-about .advantage-section h2 {
    font-size: 1.5rem;
  }
  .page-about .advantage-card {
    flex: 1 1 100%;
    max-width: 100%;
  }
  .page-about .advantage-card-featured {
    max-width: 100%;
  }
  .page-about .cta-about-section {
    padding: var(--space-xl) 0;
  }
  .page-about .cta-about-text {
    font-size: 0.95rem;
    padding: 0 var(--space-md);
  }
  .page-about .cta-about-actions .btn {
    width: 100%;
    text-align: center;
  }
}
@media (min-width: 641px) and (max-width: 1024px) {
  .page-about .spirit-deco-text {
    font-size: 6.5rem;
  }
  .page-about .advantage-card {
    flex: 1 1 240px;
  }
  .page-about .advantage-card-featured {
    flex: 1 1 280px;
  }
}