/* ==========================================
   关于我们页面样式 - about.css
   ========================================== */

/* ==========================================
   Banner区域样式
   ========================================== */
.about-banner {
  margin-top: 76px;
  padding: 5rem 0 4rem;
  background-color: #fafafa;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.about-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.about-banner-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: #1a1a1a;
  letter-spacing: -0.03em;
  line-height: 1.1;
  position: relative;
  z-index: 1;
}

.about-banner-title .highlight {
  color: #6366f1;
  position: relative;
}

.about-banner-subtitle {
  font-size: 1.25rem;
  color: #6b7280;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

/* ==========================================
   公司简介区域
   ========================================== */
.about-intro {
  padding: 5rem 0;
  background-color: #fff;
}

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

.about-intro-content h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  color: #1a1a1a;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.about-intro-content h2 .highlight {
  color: #6366f1;
}

.about-intro-content p {
  font-size: 1.1rem;
  color: #6b7280;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

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

.stat-item {
  text-align: left;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #6366f1;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.95rem;
  color: #6b7280;
  font-weight: 500;
}

.about-intro-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual-card {
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
  border-radius: 20px;
  padding: 3rem;
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual-card::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 2px dashed #d1d5db;
  animation: rotate 30s linear infinite;
}

.about-visual-card i {
  font-size: 5rem;
  color: #6366f1;
  position: relative;
  z-index: 1;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================
   团队优势区域
   ========================================== */
.about-advantages {
  padding: 5rem 0;
  background-color: #fafafa;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.advantage-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 2.5rem 2rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
}

.advantage-card:hover {
  transform: translateY(-4px);
  border-color: #d1d5db;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.08);
}

.advantage-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  background: #f3f4f6;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: #374151;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.advantage-card:hover .advantage-icon {
  background: #1a1a1a;
  color: white;
}

.advantage-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #1a1a1a;
}

.advantage-card p {
  font-size: 0.95rem;
  color: #6b7280;
  line-height: 1.6;
}

/* ==========================================
   核心能力区域
   ========================================== */
.about-capabilities {
  padding: 5rem 0;
  background-color: #fff;
}

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

.capability-item {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  background: #fafafa;
  border-radius: 12px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.capability-item:hover {
  background: #f3f4f6;
  transform: translateX(4px);
}

.capability-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #6366f1;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.capability-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #1a1a1a;
}

.capability-content p {
  font-size: 0.95rem;
  color: #6b7280;
  line-height: 1.6;
}

/* ==========================================
   使命愿景区域
   ========================================== */
.about-mission {
  padding: 5rem 0;
  background-color: #fafafa;
  text-align: center;
}

.mission-content {
  max-width: 800px;
  margin: 0 auto;
}

.mission-content h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 2rem;
  color: #1a1a1a;
  letter-spacing: -0.03em;
}

.mission-content p {
  font-size: 1.2rem;
  color: #6b7280;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.mission-highlight {
  font-size: 1.5rem;
  font-weight: 700;
  color: #6366f1;
  margin-top: 2rem;
  padding: 2rem;
  background: #fff;
  border-radius: 12px;
  border-left: 4px solid #6366f1;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 992px) {
  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .about-intro-visual {
    order: -1;
  }
  
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .capability-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .about-banner {
    padding: 4rem 0 3rem;
  }
  
  .about-intro,
  .about-advantages,
  .about-capabilities,
  .about-mission {
    padding: 3rem 0;
  }
  
  .about-stats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .advantage-grid {
    grid-template-columns: 1fr;
  }
}