html,body{height:100%;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}.container{max-width:960px;margin:0 auto;padding:16px}.page-title{margin:0 0 16px}.card{border:1px solid #eee;padding:12px;border-radius:8px;margin-bottom:12px}button{padding:8px 12px;border-radius:6px;border:1px solid #e0e0e0;background:#fff;cursor:pointer}button.primary{background:#1677ff;color:#fff;border-color:#1677ff}