/* SellerAI 基本样式 */
body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #f5f5f5; }
nav { background: #2c3e50; padding: 1rem; }
nav a { color: white; text-decoration: none; margin-right: 1rem; }
main { max-width: 1200px; margin: 2rem auto; padding: 0 1rem; }
h1 { color: #2c3e50; }
.messages { padding: 1rem; margin-bottom: 1rem; }
.messages .error { background: #fee; color: #c33; }
.messages .success { background: #efe; color: #3c3; }
.dashboard-menu a { display: inline-block; background: #3498db; color: white; padding: 1rem; margin: 0.5rem; text-decoration: none; border-radius: 5px; }
.pricing-plans { display: flex; gap: 1rem; }
.plan { background: white; padding: 2rem; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); flex: 1; }
input { padding: 0.5rem; margin: 0.5rem 0; width: 100%; box-sizing: border-box; }
button { background: #3498db; color: white; border: none; padding: 0.75rem 1.5rem; cursor: pointer; border-radius: 5px; }
button:hover { background: #2980b9; }