/* 首页样式 */
.homepage { max-width: 1200px; margin: 0 auto; padding: 2rem; }
.hero-section { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 3rem 2rem; border-radius: 12px; margin-bottom: 3rem; text-align: center; }
.hero-section h1 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero-section p { font-size: 1.2rem; opacity: 0.9; }

.section { margin-bottom: 3rem; }
.section-title { font-size: 1.8rem; color: #2c3e50; margin-bottom: 1.5rem; padding-bottom: 0.5rem; border-bottom: 3px solid #667eea; display: inline-block; }

/* 产品卡片网格 */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.product-card { background: white; border-radius: 8px; padding: 1.5rem; box-shadow: 0 2px 8px rgba(0,0,0,0.1); transition: transform 0.2s, box-shadow 0.2s; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 4px 16px rgba(0,0,0,0.15); }
.product-card h3 { margin: 0 0 1rem 0; font-size: 1.2rem; }
.product-card h3 a { color: #2c3e50; text-decoration: none; }
.product-card h3 a:hover { color: #667eea; }
.product-card .meta { color: #666; font-size: 0.9rem; margin: 0.5rem 0; }
.product-card .price { color: #e74c3c; font-size: 1.3rem; font-weight: bold; margin: 0.8rem 0; }
.product-card .category { display: inline-block; background: #ecf0f1; padding: 0.2rem 0.8rem; border-radius: 12px; font-size: 0.85rem; color: #555; }
.product-card .stats { display: flex; gap: 1rem; margin-top: 1rem; font-size: 0.85rem; color: #888; }

/* 分类网格 */
.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; }
.category-card { background: white; border: 2px solid #ecf0f1; border-radius: 8px; padding: 1.2rem; text-align: center; transition: all 0.2s; }
.category-card:hover { border-color: #667eea; background: #f8f9ff; }
.category-card a { text-decoration: none; color: #2c3e50; font-weight: 500; display: block; }
.category-card .count { color: #667eea; font-size: 0.9rem; margin-top: 0.5rem; }
.sub-categories { margin-top: 0.8rem; padding-top: 0.8rem; border-top: 1px dashed #ecf0f1; }
.sub-categories a { font-size: 0.85rem; color: #666; margin: 0.3rem 0; display: block; }

/* 功能特点 */
.features-list { background: #f8f9fa; border-radius: 8px; padding: 2rem; }
.features-list ul { list-style: none; padding: 0; margin: 0; }
.features-list li { padding: 0.8rem 0; border-bottom: 1px solid #e0e0e0; color: #2c3e50; }
.features-list li:last-child { border-bottom: none; }

/* 示例区域 */
.demo-box { background: #fff3cd; border-left: 4px solid #ffc107; padding: 1rem 1.5rem; margin: 1rem 0; border-radius: 4px; }
.demo-box code { background: #fff; padding: 0.2rem 0.5rem; border-radius: 3px; font-family: monospace; }

/* 快速导航 */
.quick-nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.quick-nav a { background: #667eea; color: white; padding: 0.8rem 1.5rem; border-radius: 6px; text-decoration: none; transition: background 0.2s; }
.quick-nav a:hover { background: #5a67d8; }

/* 变量展示 */
.variable-demo { background: #e8f5e9; border-radius: 8px; padding: 1.5rem; margin-top: 1rem; }
.variable-demo p { margin: 0.5rem 0; color: #2e7d32; }

/* 响应式 */
@media (max-width: 768px) {
    .homepage { padding: 1rem; }
    .hero-section { padding: 2rem 1rem; }
    .hero-section h1 { font-size: 1.8rem; }
    .hero-section p { font-size: 1rem; }
    .section-title { font-size: 1.4rem; }
    .product-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
    .category-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
    .features-list { padding: 1.5rem; }
    .quick-nav { flex-direction: column; }
    .quick-nav a { text-align: center; }
}

@media (max-width: 480px) {
    .homepage { padding: 0.8rem; }
    .hero-section { padding: 1.5rem 0.8rem; }
    .hero-section h1 { font-size: 1.5rem; }
    .product-grid { grid-template-columns: 1fr; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .features-list { padding: 1rem; }
    .variable-demo { padding: 1rem; }
}