:root{
  --ink:#10151b; --muted:#6b7784; --bg:#0d1117; --surface:#ffffff;
  --line:#e3e7ec; --accent:#0f4c81; --warn:#8a5200; --warn-bg:#fff4e5; --warn-line:#f0d9b5;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--bg);
  background-image:radial-gradient(1200px 600px at 50% -10%, #1b2836 0%, #0d1117 60%);
  color:var(--ink);
  font:15px/1.5 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  display:grid; place-items:center; padding:24px;
}
.card{
  width:100%; max-width:420px; background:var(--surface);
  border-radius:16px; padding:32px 30px 26px;
  box-shadow:0 24px 60px rgba(0,0,0,.45), 0 2px 6px rgba(0,0,0,.2);
}
.mark{display:flex; align-items:center; gap:10px; margin-bottom:22px}
.mark img{width:34px; height:34px; border-radius:9px}
.mark .brand-name{font-weight:700; letter-spacing:-.01em; white-space:nowrap}
.seg.lang{display:flex; margin-left:auto; flex:0 0 auto; border:1px solid var(--line);
  border-radius:999px; overflow:hidden; background:#fbfcfd}
.seg.lang button{border:0; background:transparent; padding:5px 10px; font-size:11.5px;
  font-weight:650; color:var(--muted); cursor:pointer; font-family:inherit}
.seg.lang button.on{background:var(--accent); color:#fff}
h1{font-size:20px; margin:0 0 6px; letter-spacing:-.02em}
.sub{margin:0 0 22px; color:var(--muted); font-size:14px}
label{display:block; font-size:12px; font-weight:600; letter-spacing:.04em;
  text-transform:uppercase; color:var(--muted); margin-bottom:7px}
input{
  width:100%; padding:12px 14px; font-size:16px; font-family:inherit;
  letter-spacing:.14em; text-transform:uppercase;
  border:1px solid var(--line); border-radius:10px; background:#fbfcfd; color:var(--ink);
}
input:focus{outline:2px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset:1px;
  border-color:var(--accent); background:#fff}
button{
  width:100%; margin-top:14px; padding:12px 14px; font:inherit; font-weight:650;
  color:#fff; background:var(--accent); border:0; border-radius:10px; cursor:pointer;
}
button:hover{background:#0c3e69}
button:disabled{opacity:.6; cursor:progress}
.terms-consent{
  margin:12px 0 0; font-size:11.5px; line-height:1.55; color:var(--muted); text-align:center;
}
.terms-consent a{color:var(--accent)}
.err{margin-top:14px; padding:10px 12px; border-radius:9px; font-size:13.5px;
  background:#fdeaea; border:1px solid #f3c9c9; color:#8c2020; display:none}
.err.on{display:block}
.notice-b2b{
  background:#eef4fb; border-color:#c8ddf0; color:#14456f;
}
.notice{margin-top:22px; padding:11px 13px; border-radius:9px; font-size:12.5px; line-height:1.55;
  background:var(--warn-bg); border:1px solid var(--warn-line); color:var(--warn)}
footer{margin-top:18px; font-size:11.5px; color:var(--muted); text-align:center}
footer p{margin:8px 0 0}
.foot-links{display:flex; flex-wrap:wrap; gap:4px 10px; justify-content:center;
  font-size:12.5px; padding-top:16px; border-top:1px solid var(--line)}
.foot-links a{color:var(--muted); font-weight:600; text-decoration:none}
.foot-links a:hover{color:var(--accent); text-decoration:underline}
.foot-links .sep{color:var(--line)}
@media (prefers-color-scheme: dark){
  .seg.lang{background:#10151b}
  :root{--ink:#e8edf3; --muted:#9aa6b3; --line:#2b333d; --surface:#161b22}
  input{background:#10151b; color:var(--ink)}
  input:focus{background:#131922}
  .err{background:#2a1618; border-color:#5a2a2c; color:#f0b4b4}
  .notice{background:#2a2113; border-color:#54421f; color:#e8c489}
  .notice-b2b{background:#14243a; border-color:#2b4a6b; color:#a9cdf0}
}

@media (max-width: 400px){
  .card{padding:26px 20px 22px}
  .mark .brand-name{font-size:14px}
  .seg.lang button{padding:5px 8px; font-size:11px}
}