.site-check {
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  background: var(--bg-deep);
  padding: 38px 34px;
}
.site-check__intro { max-width: 760px; }
.site-check__intro .text { margin-top: 24px; line-height: 1.65; }
.site-check__form { margin-top: 32px; }
.site-check__form label { display: block; color: var(--text-soft); margin-bottom: 12px; }
.site-check__controls { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; }
.site-check__controls input {
  min-width: 0;
  width: 100%;
  min-height: 59px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--bg);
  color: var(--text);
  padding: 16px 18px;
  font: inherit;
  font-size: 16px;
}
.site-check__controls input::placeholder { color: var(--muted); opacity: 1; }
.site-check__controls input:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.site-check__note { margin-top: 16px; max-width: 75ch; color: var(--muted); font-size: 12px; line-height: 1.6; }
@media (max-width: 640px) {
  .site-check { padding: 26px 20px; }
  .site-check__controls { grid-template-columns: minmax(0, 1fr); }
  .site-check__controls .btn { width: 100%; justify-content: center; }
}