/* =========================================
   首页样式
   ========================================= */

/* Hero 区域 */
.hero {
  padding: 140px 0 100px;
  text-align: center;
  background: linear-gradient(135deg, #cfddf2 0%, #dce6f4 50%, #d4e0f2 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text);
}

.hero h1 span {
  color: var(--primary);
}

.hero .subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 特色/优势区域 */
.features {
  padding: var(--section-padding) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  text-align: center;
  padding: 40px 28px;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--primary-bg);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* 公司简介 */
.about-preview {
  padding: var(--section-padding) 0;
  background: linear-gradient(180deg, var(--surface-alt) 0%, #d5dfee 100%);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 16px;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--border);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* CTA 行动号召 */
.cta-section {
  padding: var(--section-padding) 0;
  text-align: center;
}

.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  color: #fff;
}

.cta-box h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-box p {
  font-size: 1.05rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-box .btn {
  background: #fff;
  color: var(--primary);
}

.cta-box .btn:hover {
  background: var(--surface-alt);
  transform: translateY(-2px);
}

/* 响应式 */
@media (max-width: 768px) {
  .hero {
    padding: 110px 0 60px;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .about-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}