body{margin:0;font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif;background:#f5f7fa}.login-wrapper{position:relative;width:100vw;height:100vh}.login-bg{position:absolute;width:100%;height:100%;background:linear-gradient(135deg,#409eff,#66b1ff);clip-path:polygon(0 0,100% 0,100% 60%,0 100%)}.login-card{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:380px;background:#fff;border-radius:12px;padding:30px}.login-header h4{font-weight:600}.btn-primary{background-color:#409eff;border-color:#409eff}.btn-primary:hover{background-color:#66b1ff;border-color:#66b1ff}.captcha-img{height:38px;border-radius:6px;border:1px solid #ddd}