* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Microsoft YaHei", sans-serif;
  background: #2b2b2b;
  color: #ddd;
  padding: 12px;
}

.bar {
  background: #1e1e1e;
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 12px;
  font-size: 13px;
  line-height: 1.7;
}

.bar b { color: #4ea1ff; }

.bar input {
  width: 100%;
  margin-top: 6px;
  padding: 6px 8px;
  background: #111;
  border: 1px solid #444;
  color: #ddd;
  border-radius: 4px;
  font-size: 12px;
}

.bar input[aria-invalid="true"] { border-color: #ff6b6b; }

.bar button {
  margin-top: 8px;
  padding: 6px 16px;
  background: #4ea1ff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
}

.bar button:hover { background: #3a8de0; }
.bar button:focus-visible, .bar input:focus-visible { outline: 2px solid #8bc2ff; outline-offset: 2px; }

.frame-wrap {
  width: min(760px, 100%);
  margin: 0 auto;
  background: #000;
  border-radius: 6px;
  overflow: hidden;
}

iframe {
  width: 760px;
  max-width: 100%;
  height: 900px;
  border: 0;
  display: block;
}

.note { color: #999; font-size: 12px; margin-top: 4px; }
.status { min-height: 20px; color: #ffadad; font-size: 12px; margin-top: 4px; }