body{margin:0;font-family:-apple-system,PingFang SC,Microsoft YaHei,sans-serif}.login-wrap{height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#8b1a1a,#5c1010)}.login-card{background:#fff;padding:40px;border-radius:12px;width:360px}.login-card h1{text-align:center;color:#8b1a1a;margin-bottom:24px}