/* =======================================================
   about.css — 关于我们页独有样式
   依赖：global.css（Design Tokens / 导航 / 页脚 / 通用工具）
   ======================================================= */

/* ===========================
   Hero Section
   =========================== */
.hero {
  background: var(--brand-dark);
  height: 385px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(10, 158, 206, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(4, 82, 151, 0.3) 0%, transparent 50%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: white;
  padding: 0 2rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===========================
   Company Intro
   =========================== */
.company-intro {
  padding: 5rem 0;
  background: #fff;
}

.intro-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 4rem;
}

/* 左侧文字 */
.intro-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--brand-primary);
  background: var(--brand-light);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 1.2rem;
}

.intro-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--brand-dark);
  line-height: 1.35;
  margin-bottom: 1.5rem;
}

.intro-title em {
  font-style: normal;
  color: var(--brand-primary);
}

.intro-divider {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

.intro-text p {
  font-size: 1rem;
  line-height: 1.9;
  color: #555;
  margin-bottom: 1rem;
}

.intro-text p:last-child { margin-bottom: 0; }
.intro-text strong { color: var(--brand-dark); font-weight: 600; }

/* 右侧亮点卡片 */
.intro-highlight {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: #f8fafd;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  border-left: 3px solid transparent;
  transition: all var(--transition);
}

.intro-highlight:nth-child(1) { border-left-color: var(--brand-primary); }
.intro-highlight:nth-child(2) { border-left-color: var(--brand-accent); }
.intro-highlight:nth-child(3) { border-left-color: #2ec4b6; }
.intro-highlight:nth-child(4) { border-left-color: #f59e0b; }

.intro-highlight:hover {
  background: #eef4fb;
  transform: translateX(4px);
}

.intro-highlight-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.intro-highlight:nth-child(1) .intro-highlight-icon { background: rgba(4,82,151,.1); }
.intro-highlight:nth-child(2) .intro-highlight-icon { background: rgba(10,158,206,.1); }
.intro-highlight:nth-child(3) .intro-highlight-icon { background: rgba(46,196,182,.1); }
.intro-highlight:nth-child(4) .intro-highlight-icon { background: rgba(245,158,11,.1); }

.intro-highlight-icon svg { width: 20px; height: 20px; }
.intro-highlight:nth-child(1) .intro-highlight-icon svg { fill: var(--brand-primary); }
.intro-highlight:nth-child(2) .intro-highlight-icon svg { fill: var(--brand-accent); }
.intro-highlight:nth-child(3) .intro-highlight-icon svg { fill: #2ec4b6; }
.intro-highlight:nth-child(4) .intro-highlight-icon svg { fill: #f59e0b; }

.intro-highlight-body h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--brand-dark);
  margin-bottom: 0.25rem;
}

.intro-highlight-body p {
  font-size: 0.85rem;
  color: #666;
  line-height: 1.5;
  margin: 0;
}

/* ===========================
   Stats Grid
   =========================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  background: white;
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all var(--transition);
  border: 1px solid var(--neutral-300);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--brand-primary);
  margin-bottom: 0.5rem;
}

.stat-label { color: #666; font-size: 1rem; }

/* ===========================
   Section Labels
   =========================== */
.section-label {
  display: block;
  text-align: center;
  font-size: 0.8rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--brand-primary);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.section-title {
  text-align: center;
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 3rem;
  color: var(--brand-dark);
}

/* ===========================
   Business Section
   =========================== */
.business-section {
  padding: 5rem 0;
}

.business-section:nth-child(even) {
  background: var(--brand-light);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.business-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--brand-primary);
  transition: all var(--transition);
}

.business-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(4,82,151,.15);
}

.business-card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 0.5rem;
}

.biz-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--brand-primary);
  background: var(--brand-light);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 0.75rem;
  letter-spacing: .05em;
}

.business-card p {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.75;
}

.biz-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 1rem;
}

.biz-tags span {
  font-size: 0.75rem;
  color: var(--brand-primary);
  background: var(--brand-light);
  padding: 4px 10px;
  border-radius: 4px;
}

/* ===========================
   Partner Logos
   =========================== */
.partner-section {
  padding: 4rem 0;
}

.section-desc {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 2.5rem;
  color: #666;
  font-size: 0.95rem;
}

.partner-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2rem 3rem;
}

.partner-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.65;
  transition: opacity var(--transition);
}

.partner-logo:hover { opacity: 1; }

.partner-logo-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: white;
  border: 1px solid #e0e0e0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.partner-logo span {
  font-size: 0.75rem;
  color: #888;
}

/* ===========================
   Values Section
   =========================== */
.values-section {
  padding: 5rem 0;
  background: var(--brand-light);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.value-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(4,82,151,.12);
}

.value-icon {
  width: 48px;
  height: 48px;
  fill: var(--brand-primary);
  margin-bottom: 1rem;
}

.value-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 0.5rem;
}

.value-desc {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.7;
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
  background: var(--brand-primary);
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: white;
  margin-bottom: 2rem;
  position: relative;
}

.cta-btn {
  display: inline-block;
  background: white;
  color: var(--brand-primary);
  padding: 14px 36px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition);
  position: relative;
}

.cta-btn:hover {
  background: var(--brand-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,.2);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .intro-layout { grid-template-columns: 1fr; gap: 2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: 1fr; }
  .business-grid { grid-template-columns: 1fr; }
  .hero { height: auto; padding: 100px 24px 60px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.8rem; }
  .section-title { font-size: 1.5rem; }
  .stats-grid { grid-template-columns: 1fr; }
}