html,body{margin:0;min-height:100%;}
body{
  font-family:Arial,Helvetica,sans-serif;
  color:#111;
  background:#e8eef0;
}
.page-bg{
  position:fixed;inset:0;z-index:0;
  background:#3b4a50 url("/static/is7ac-login-bg.png") center/cover no-repeat;
}
.page-bg::after{
  content:"";
  position:absolute;inset:0;
  background:rgba(20,24,28,.32);
}
.brand{
  position:fixed;top:16px;left:20px;z-index:2;
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.96);
  border-radius:10px;
  padding:6px 12px 6px 8px;
  box-shadow:0 6px 18px rgba(0,0,0,.12);
}
.brand img{height:36px;width:auto;max-width:120px;object-fit:contain;display:block;}
.brand span{font-weight:800;font-size:16px;color:#111;white-space:nowrap;}
.wrap{position:relative;z-index:1;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:72px 20px 24px;box-sizing:border-box;}
.panel{width:100%;max-width:420px;background:#fff;border-radius:14px;padding:24px;box-shadow:0 8px 25px rgba(0,0,0,.18);}
.panel.wide{max-width:480px;}
.logo{display:flex;justify-content:center;margin-bottom:14px;}
.logo img{max-width:220px;max-height:72px;width:auto;height:auto;object-fit:contain;}
h1{margin:0 0 14px;text-align:center;font-size:18px;font-weight:700;color:#111;}
p,.hint{text-align:center;color:#555;font-size:13px;margin:0 0 16px;}
.field{margin:10px 0;}
label{display:block;font-size:12px;color:#333;margin-bottom:6px;}
input,select{width:100%;padding:10px 12px;border-radius:10px;border:1px solid #ccc;font-size:16px;box-sizing:border-box;background:#fff;}
button,.btn{width:100%;display:block;box-sizing:border-box;margin-top:12px;padding:12px;border:none;border-radius:10px;background:#111;color:#fff;font-size:15px;font-weight:700;cursor:pointer;text-align:center;text-decoration:none;}
.btn.secondary{background:#fff;color:#111;border:1px solid #ccc;margin-top:8px;}
.err{background:#ffeaea;border:1px solid #ffb3b3;color:#a40000;padding:10px;border-radius:10px;margin:10px 0;}
.msg{background:#e7f7ef;border:1px solid #2d8a57;padding:10px;border-radius:10px;margin:10px 0;}
.foot{margin-top:14px;text-align:center;font-size:12px;color:#666;}
.foot a{color:#111;}