.start {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(11, 7, 9, 0.96);
}
.start[hidden] { display: none; }
.start-card { max-width: 420px; text-align: center; }
.start-card h1 { margin: 0 0 12px; font-size: 28px; letter-spacing: 0.04em; text-transform: uppercase; }
.start-card p { margin: 0 0 20px; color: var(--dim); }
.start-card button {
  width: 100%;
  min-height: 72px;
  font-size: 22px;
  text-transform: uppercase;
  --color: #8b0000;
  background: #8b0000;
}
.start-card button:disabled { opacity: 0.5; }
.start-card button[hidden] { display: none; }
.start-note { margin-top: 16px; font-size: 14px; min-height: 2.6em; }
.start-note.bad { color: var(--bad); }
.selftest {
  position: fixed;
  left: 8px;
  right: 8px;
  bottom: 8px;
  z-index: 20;
  width: calc(100% - 16px);
  background: #000;
  border: 1px solid var(--line);
  font: 12px/1.4 ui-monospace, Menlo, monospace;
  border-collapse: collapse;
  /* It lies over the blackout button; presses go through it. */
  pointer-events: none;
}
.selftest[hidden] { display: none; }
.selftest td, .selftest th { padding: 2px 6px; text-align: right; }
.selftest td:first-child, .selftest th:first-child { text-align: left; }
.selftest .fail { color: var(--bad); }