.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

h1 {
  font-size: 2em;
  margin: 30px 0 20px;
  color: #2c5aa0;
  line-height: 1.3;
}

h2 {
  font-size: 1.5em;
  margin: 25px 0 15px;
  color: #333;
  border-left: 4px solid #2c5aa0;
  padding-left: 12px;
}

h3 {
  font-size: 1.2em;
  margin: 10px 0;
  color: #333;
}

section {
  margin: 30px 0;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.site-intro {
  font-size: 1.05em;
  line-height: 1.8;
  color: #555;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

.video-card {
  background: #fafafa;
  padding: 20px;
  border-radius: 8px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.video-card h3 a {
  color: #2c5aa0;
  font-size: 1.1em;
}

.video-card h3 a:hover {
  text-decoration: underline;
}

.video-meta {
  color: #777;
  font-size: 0.9em;
  margin: 8px 0;
}

.video-desc {
  color: #666;
  font-size: 0.95em;
  line-height: 1.6;
  margin-top: 10px;
}

.video-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.video-item {
  padding: 15px;
  background: #fafafa;
  border-radius: 6px;
  border-left: 3px solid #2c5aa0;
}

.video-item h3 a {
  color: #2c5aa0;
}

.video-item h3 a:hover {
  text-decoration: underline;
}

.more-link {
  text-align: center;
  margin-top: 20px;
}

.more-link a {
  color: #2c5aa0;
  font-size: 1.05em;
  padding: 10px 20px;
  border: 2px solid #2c5aa0;
  border-radius: 5px;
  display: inline-block;
  transition: all 0.3s;
}

.more-link a:hover {
  background: #2c5aa0;
  color: #fff;
}

.topic-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.topic-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s;
}

.topic-card:hover {
  transform: scale(1.05);
}

.topic-card h3 {
  color: #fff;
  font-size: 1.3em;
  margin-bottom: 10px;
}

.video-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  margin: 20px 0;
}

.info-item {
  background: #f9f9f9;
  padding: 12px;
  border-radius: 5px;
}

.video-highlight {
  background: #e8f4f8;
  padding: 20px;
  border-left: 4px solid #2c5aa0;
}

.video-highlight p {
  font-size: 1.1em;
  color: #333;
  line-height: 1.7;
}

.video-summary p, .video-review p {
  line-height: 1.8;
  color: #555;
  font-size: 1.05em;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.related-item {
  background: #f5f5f5;
  padding: 15px;
  border-radius: 6px;
  border-top: 3px solid #2c5aa0;
}

.related-item h3 a {
  color: #2c5aa0;
}

.related-item h3 a:hover {
  text-decoration: underline;
}

.page-intro {
  font-size: 1.05em;
  color: #666;
  margin: 15px 0 30px;
  padding: 15px;
  background: #f9f9f9;
  border-radius: 5px;
}

.video-full-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.list-card {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  transition: box-shadow 0.3s;
}

.list-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.list-card h3 a {
  color: #2c5aa0;
  font-size: 1.15em;
}

.card-meta {
  display: flex;
  gap: 10px;
  margin: 10px 0;
  font-size: 0.9em;
}

.card-meta span {
  background: #e0e0e0;
  padding: 3px 8px;
  border-radius: 3px;
}

.card-genre {
  color: #888;
  font-size: 0.95em;
  margin: 8px 0;
}

.card-summary {
  color: #666;
  line-height: 1.6;
  font-size: 0.95em;
}

.top-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.top-card {
  display: flex;
  gap: 20px;
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
}

.rank-num {
  font-size: 2em;
  font-weight: bold;
  color: #2c5aa0;
  min-width: 50px;
  text-align: center;
}

.top-content {
  flex: 1;
}

.top-content h3 a {
  color: #2c5aa0;
  font-size: 1.2em;
}

.top-meta {
  color: #888;
  font-size: 0.9em;
  margin: 8px 0;
}

.top-oneline {
  color: #555;
  font-size: 1em;
  margin: 10px 0;
  line-height: 1.6;
}

.top-review {
  color: #666;
  font-size: 0.95em;
  line-height: 1.6;
  font-style: italic;
}

.topic-group {
  margin: 30px 0;
}

.topic-title {
  font-size: 1.4em;
  color: #2c5aa0;
  margin-bottom: 20px;
}

.topic-items {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 15px;
}

.topic-item {
  background: #f9f9f9;
  padding: 15px;
  border-radius: 6px;
  border-left: 3px solid #764ba2;
}

.topic-item h3 a {
  color: #333;
}

.topic-item h3 a:hover {
  color: #764ba2;
  text-decoration: underline;
}

.latest-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.latest-card {
  display: flex;
  gap: 15px;
  background: #fff;
  padding: 15px;
  border-radius: 6px;
  border: 1px solid #e0e0e0;
}

.latest-date {
  font-size: 1.3em;
  font-weight: bold;
  color: #2c5aa0;
  min-width: 70px;
  text-align: center;
  background: #f0f0f0;
  padding: 10px;
  border-radius: 5px;
}

.latest-content {
  flex: 1;
}

.latest-content h3 a {
  color: #2c5aa0;
}

.latest-info {
  color: #888;
  font-size: 0.9em;
  margin: 5px 0;
}

.latest-desc {
  color: #666;
  line-height: 1.6;
  font-size: 0.95em;
}

@media (max-width: 768px) {
  .container { padding: 15px; }
  h1 { font-size: 1.5em; }
  h2 { font-size: 1.3em; }
  .video-grid { grid-template-columns: 1fr; }
  .video-full-list { grid-template-columns: 1fr; }
  .topic-items { grid-template-columns: 1fr; }
  .top-card { flex-direction: column; }
  .rank-num { min-width: auto; }
  .latest-card { flex-direction: column; }
  .latest-date { min-width: auto; }
}