*{margin:0;padding:0;box-sizing:border-box}
body{background:#f5f7fa;font-family:Microsoft YaHei}
.container{max-width:500px;margin:0 auto;padding:20px}
.card{background:#fff;border-radius:16px;padding:20px;margin-bottom:14px;box-shadow:0 4px 10px #0000000a}
.btn{width:100%;padding:14px;background:#41a8ff;color:#fff;border:none;border-radius:12px;margin-bottom:10px}
.btn-warning{background:#ff9f43}
.btn-danger{background:#ff4d4f}
input,textarea{width:100%;padding:12px;border:1px solid #eee;border-radius:12px;margin-bottom:10px;outline:none}
.title{font-size:22px;margin-bottom:20px}
.text-sm{font-size:12px;color:#666}