:root {
  --ojung-blue: #337dc3;
  --ojung-green: #a4cbb4;
  --ojung-purple: #b39ddb;
  --ojung-text: #333333;
  --ojung-bg: #fafafa;
}

.ojung-header {
  text-align: center;
  margin: 5em 4em 2em 4em;
  padding: 1em;
  background: linear-gradient(90deg, var(--ojung-green), var(--ojung-blue));
  color: white;
  border-radius: 0.5em;
  box-shadow: 0 0.2em 0.4em rgba(0, 0, 0, 0.1);
}

.ojung-header h1 {
  font-size: 1.8em;
  margin: 0;
}

.ojung-main {
  max-width: 900px;
  margin: 0 auto 5em auto;
  padding: 2em;
  background-color: white;
  border-radius: 0.8em;
  box-shadow: 0 0.2em 0.8em rgba(0, 0, 0, 0.05);
  box-sizing: border-box;
}

.ojung-card {
  margin-bottom: 3em;
  border: 1px solid #ddd;
  border-radius: 0.8em;
  padding: 1.5em;
  background-color: #fdfdfd;
  box-shadow: 0 0.2em 0.6em rgba(0, 0, 0, 0.05);
}

.ojung-subtitle {
  font-size: 1.3em;
  margin-bottom: 0.6em;
  color: var(--ojung-blue);
}

.ojung-description {
  font-size: 1.05em;
  line-height: 1.7;
  margin-bottom: 1em;
  color: var(--ojung-text);
}

.ojung-video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 ratio */
  height: 0;
  overflow: hidden;
  border-radius: 0.5em;
}

.ojung-video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 0.5em;
}



/* 종소리 여러개 */

.ojung-multi-video-group {
  margin-top: 1.5em;
  display: flex;
  flex-direction: column;
  gap: 2.5em;
}

.ojung-video-block {
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 0.6em;
  padding: 1em;
  box-shadow: 0 0.1em 0.4em rgba(0, 0, 0, 0.05);
}

.ojung-video-title {
  font-size: 1.1em;
  margin-bottom: 0.8em;
  color: var(--ojung-blue);
}

.ojung-video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  border-radius: 0.5em;
}

.ojung-video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 0.5em;
}