:root{
  --bg:#e9ecf0;--bg2:#d8dde4;--card:#fff;--text:#1f2933;--muted:#5f6b7a;--line:#c5ccd6;
  --red:#da291c;--red-d:#b81f14;--err-bg:#fdecea;--err:#b3261e;--foot:#6b7686;
  box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#14181d;--bg2:#1d232b;--card:#222931;--text:#e8ecf1;--muted:#9aa6b4;--line:#3a4450;--err-bg:#3a1c1a;--err:#ff8a80;--foot:#7d8896;color-scheme:dark}
}
html{height:100%}
*{box-sizing:border-box}
body{
  margin:0;min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-family:"Segoe UI","Helvetica Neue",Arial,sans-serif;color:var(--text);background-color:var(--bg);
  background-image:linear-gradient(var(--bg2) 1px,transparent 1px),linear-gradient(90deg,var(--bg2) 1px,transparent 1px);
  background-size:48px 48px;padding:24px;
}
.bar{position:fixed;top:0;left:0;right:0;height:6px;background:var(--red)}
.card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--line);border-top:4px solid var(--red);border-radius:3px;padding:32px 32px 28px;box-shadow:0 10px 30px rgba(0,0,0,.14)}
.brand{display:flex;align-items:center;gap:12px}
.mark{width:44px;height:44px;flex:none}
.brand-name{font-size:28px;font-weight:600;letter-spacing:-.4px;line-height:1}
.brand-name b{color:var(--red);font-weight:700}
.vendor{font-size:12px;color:var(--muted);margin-top:4px}
.host{margin:16px 0 22px;padding-bottom:16px;border-bottom:1px solid var(--line);color:var(--muted);font-size:13px;display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.host strong{color:var(--text);font-weight:600}
label{display:block;font-size:13px;font-weight:600;margin:0 0 6px}
.field{margin-bottom:16px}
.input-wrap{position:relative}
input{width:100%;height:40px;padding:0 12px;font:inherit;font-size:14px;color:var(--text);background:var(--card);border:1px solid var(--line);border-radius:3px;outline:none;transition:border-color .15s,box-shadow .15s}
input:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(218,41,28,.22)}
#pwd{padding-right:64px}
.toggle{position:absolute;right:4px;top:4px;height:32px;padding:0 10px;border:0;background:none;color:var(--muted);font:inherit;font-size:12px;cursor:pointer;border-radius:3px}
.toggle:hover{color:var(--text)}
.toggle:focus-visible{outline:2px solid var(--red)}
.error{display:flex;align-items:flex-start;gap:10px;margin:0 0 16px;padding:10px 12px;font-size:13px;line-height:1.4;color:var(--err);background:var(--err-bg);border:1px solid var(--err);border-left-width:4px;border-radius:3px}
.error[hidden]{display:none}
.error svg{flex:none;margin-top:1px}
.btn{width:100%;height:42px;border:0;border-radius:3px;background:var(--red);color:#fff;font:inherit;font-size:15px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;transition:background .15s}
.btn:hover{background:var(--red-d)}
.btn:focus-visible{outline:3px solid rgba(218,41,28,.4);outline-offset:2px}
.btn[disabled]{opacity:.85;cursor:progress}
.spin{width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:s .7s linear infinite;display:none}
.btn.loading .spin{display:block}
@keyframes s{to{transform:rotate(360deg)}}
.card.shake{animation:sh .35s}
@keyframes sh{20%{transform:translateX(-7px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(3px)}}
.foot{margin-top:20px;font-size:12px;color:var(--foot);text-align:center;max-width:400px;line-height:1.5}
@media (prefers-reduced-motion:reduce){.card.shake,.spin{animation:none}}
@media (max-width:420px){.card{padding:24px 20px}}