body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: #f6f7f8;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 16px;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid #ddd;
}

.header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.btn {
  padding: 10px 16px;
  border-radius: 20px;
  background: #2b8cee;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.iframe-wrap {
  margin-top: 20px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .15);
  height: 650px;
}

.iframe-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
  background: #000;
}

.site-footer {
  margin-top: 30px;
  padding: 16px 0;
  text-align: center;
  color: #666;
}