.auth-card {
  width: min(1120px, 100%);
  padding: 0;
}

.auth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr);
}

.auth-intro,
.auth-access {
  min-width: 0;
  padding: 42px;
}

.auth-access {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--soft);
  border-left: 1px solid var(--line);
}

.auth-access .notice {
  margin-top: 0;
  background: #fff;
}

.brand-logo {
  display: block;
  width: 72px;
  height: auto;
  max-height: 42px;
  object-fit: contain;
  object-position: left center;
  margin-bottom: 28px;
}

.rail-logo {
  display: block;
  width: 42px;
  height: 28px;
  object-fit: contain;
  margin: 5px 0 21px;
  background: #fff;
  padding: 5px;
}

.public-runtime {
  margin: 24px 0 16px;
  padding: 20px;
  border: 1px solid var(--line);
  background: #fbfcff;
}

.public-runtime header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.public-runtime h2 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -.02em;
}

.public-runtime > p {
  margin: 13px 0 17px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.public-runtime dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  border-top: 1px solid var(--line);
}

.public-runtime dl div {
  min-width: 0;
  padding: 14px 12px 0 0;
}

.public-runtime dt {
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.public-runtime dd {
  margin: 6px 0 0;
  font-size: 12px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.runtime-badge {
  flex: 0 0 auto;
  padding: 6px 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.runtime-badge.checking { color: #6b7280; background: #eef1f6; }
.runtime-badge.available { color: #087443; background: #e8f7ef; }
.runtime-badge.unavailable { color: #a15c00; background: #fff4db; }

@media (max-width: 600px) {
  .auth-layout { grid-template-columns: 1fr; }
  .auth-intro, .auth-access { padding: 28px 20px; }
  .auth-access { border-left: 0; border-top: 1px solid var(--line); }
  .public-runtime dl { grid-template-columns: 1fr; }
  .public-runtime dl div { padding-top: 11px; }
  .brand-logo { width: 62px; }
}