/* Hero Section 组件 */
.hero-section {
  background: var(--gradient-primary);
  color: white;
  padding: 120px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.hero-section .header-content {
  position: relative;
  z-index: 2;
}

.hero-section .header-content h1 {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, #0070f3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-section .header-content .tagline {
  font-size: clamp(1.1rem, 4vw, 1.4rem);
  margin-bottom: 40px;
  opacity: 0.9;
  font-weight: 400;
}

/* Header 组件 */
header {
  background: var(--gradient-primary);
  color: white;
  padding: 120px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.header-content {
  position: relative;
  z-index: 2;
}

.header-content h1 {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, #0070f3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-content .tagline {
  font-size: clamp(1.1rem, 4vw, 1.4rem);
  margin-bottom: 40px;
  opacity: 0.9;
  font-weight: 400;
}

/* Navigation 组件 */
nav {
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}

nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-color);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 14px;
  transition: all 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: width 0.2s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a:hover {
  color: var(--accent-color);
}

/* Section 组件 */
section {
  padding: 80px 0;
  position: relative;
}

section:nth-child(even) {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Features Grid 组件 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
  margin-top: 60px;
}

.feature-card {
  background: var(--bg-secondary);
  padding: 40px 32px;
  border-radius: 16px;
  box-shadow: var(--shadow-light);
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-heavy);
  border-color: var(--accent-color);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  color: white;
  font-size: 2rem;
  box-shadow: var(--shadow-medium);
}

.feature-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.95rem;
}

/* Product Showcase 组件 */
.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 60px;
}

.showcase-content h3 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.showcase-content p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}

.showcase-image {
  background: var(--gradient-secondary);
  height: 400px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  font-weight: 600;
  box-shadow: var(--shadow-heavy);
  position: relative;
  overflow: hidden;
}

.showcase-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
  animation: shine 3s infinite;
}

@keyframes shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Stats 组件 */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.stat-item {
  text-align: center;
  padding: 32px 24px;
  background: var(--bg-secondary);
  border-radius: 16px;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
  border-color: var(--accent-color);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-color);
  margin-bottom: 8px;
  background: var(--gradient-secondary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Footer 组件 */
footer {
  background: var(--bg-dark);
  color: white;
  padding: 80px 0 40px;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 48px;
  margin-bottom: 48px;
}

.footer-section h3 {
  margin-bottom: 24px;
  color: #fff;
  font-weight: 600;
  font-size: 1.2rem;
}

.footer-section p, .footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.8;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.footer-section a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
  text-align: center;
  color: var(--text-secondary);
}

.footer-links {
  margin-bottom: 24px;
}

.footer-links a {
  margin: 0 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .product-showcase {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}