:root {
  --bg: #f3f6fb;
  --panel: #ffffff;
  --text: #15285f;
  --muted: #6b7895;
  --line: #c7dbff;
  --blue: #2f66ee;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Yu Gothic UI", "Hiragino Sans", sans-serif;
}
.loginPanel {
  width: min(420px, 100%);
  padding: 38px;
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(30, 64, 175, .12);
}
.brandMark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin: 0 auto 18px;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  font-size: 24px;
}
.eyebrow { margin: 0 0 8px; color: var(--blue); font-size: 14px; }
h1 { margin: 0; font-size: 28px; }
.description { margin: 16px 0 24px; color: var(--muted); line-height: 1.7; }
.loginMessage {
  margin: -8px 0 18px;
  padding: 10px 12px;
  color: #216043;
  border: 1px solid #a9e3c1;
  border-radius: 6px;
  background: #f1fcf5;
  font-size: 13px;
  line-height: 1.5;
}
.loginMessage.error { color: #bb2d2d; border-color: #ffc1c1; background: #fff4f4; }
.xLogin {
  display: block;
  width: 100%;
  padding: 13px 16px;
  color: #fff;
  background: #101114;
  border-radius: 6px;
  text-decoration: none;
}
.xLogin:hover { background: #27282c; }
.guestLogin {
  display: block;
  margin-top: 10px;
  padding: 12px 16px;
  color: var(--blue);
  border: 1px solid var(--line);
  border-radius: 6px;
  text-decoration: none;
}
.guestLogin:hover { background: #f4f7ff; }
.guestNote { margin: 12px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.privacy { margin: 16px 0 0; color: var(--muted); font-size: 12px; }
.loginFooter {
  position: fixed;
  right: 0;
  bottom: 18px;
  left: 0;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: .48;
  text-align: center;
  font-size: 14px;
}
.loginFooter::before,
.loginFooter::after {
  width: 52px;
  height: 1px;
  content: "";
  background: currentColor;
}
@media (max-width: 480px) {
  body { display: block; padding: 16px; }
  .loginPanel { margin: 16px auto 56px; padding: 26px 20px; }
}