:root {
  --primary-color: #2c5282;
  --secondary-color: #4a90e2;
  --text-color: #333;
  --bg-color: #f5f5f5;
  --card-bg: #fff;
  --border-color: #e0e0e0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: var(--bg-color);
}

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

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: color 0.3s;
}

a:hover {
  color: var(--secondary-color);
}

header {
  background: var(--card-bg);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

nav a {
  padding: 15px 10px;
  display: block;
  flex: 1 1 0;
  min-width: 0;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: all 0.3s;
  color: var(--text-color);
}

nav a:hover {
  background: #f0f0f0;
  color: var(--secondary-color);
}

main {
  min-height: calc(100vh - 200px);
  padding: 20px 0;
}

section {
  margin: 40px 0;
}

h1 {
  font-size: 2em;
  line-height: 1.2;
  margin-bottom: 15px;
  color: var(--primary-color);
}

h2 {
  font-size: 1.5em;
  line-height: 1.2;
  margin-bottom: 15px;
  color: var(--primary-color);
  border-left: 4px solid var(--secondary-color);
  padding-left: 12px;
}

h3 {
  font-size: 1.2em;
  line-height: 1.3;
  margin-bottom: 10px;
}

.hero {
  background: linear-gradient(135deg, #2c5282 0%, #4a90e2 100%);
  color: white;
  padding: 60px 0;
  text-align: center;
}

.hero h1 {
  color: white;
  font-size: 2.5em;
  margin-bottom: 20px;
}

.hero .lead {
  font-size: 1.2em;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

.site-intro {
  background: var(--card-bg);
  padding: 40px 0;
}

.site-intro p {
  font-size: 1.05em;
  line-height: 1.8;
  text-align: justify;
}

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

.video-card {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.video-card h3 {
  margin-bottom: 10px;
}

.video-card .meta {
  color: #666;
  font-size: 0.9em;
  margin-bottom: 10px;
}

.video-card .one-line {
  font-size: 0.95em;
  line-height: 1.6;
  color: #555;
}

.video-list {
  margin-top: 20px;
}

.video-item {
  background: var(--card-bg);
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: box-shadow 0.3s;
}

.video-item:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.video-item .meta {
  color: #666;
  font-size: 0.9em;
  margin-bottom: 8px;
}

.video-item .summary {
  font-size: 0.95em;
  line-height: 1.6;
  color: #555;
}

.list-item {
  background: var(--card-bg);
  padding: 25px;
  margin-bottom: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  position: relative;
}

.list-item .rank,
.list-item .date,
.list-item .category {
  display: inline-block;
  padding: 4px 12px;
  background: var(--secondary-color);
  color: white;
  border-radius: 4px;
  font-size: 0.9em;
  margin-bottom: 10px;
}

.list-item .tags {
  color: #666;
  font-size: 0.85em;
  margin: 8px 0;
}

.list-item .summary {
  line-height: 1.6;
  color: #555;
}

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

.btn {
  display: inline-block;
  padding: 12px 30px;
  background: var(--secondary-color);
  color: white;
  border-radius: 6px;
  margin: 0 10px;
  transition: background 0.3s;
}

.btn:hover {
  background: var(--primary-color);
}

.more-link a {
  display: inline-block;
  padding: 10px 20px;
  color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
  border-radius: 6px;
  transition: all 0.3s;
}

.more-link a:hover {
  background: var(--secondary-color);
  color: white;
}

.detail-header {
  margin-bottom: 30px;
}

.basic-info .info-list {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.basic-info .info-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.basic-info .info-list li:last-child {
  border-bottom: none;
}

.one-line .highlight {
  background: linear-gradient(135deg, #2c5282 0%, #4a90e2 100%);
  color: white;
  padding: 20px;
  border-radius: 8px;
  font-size: 1.1em;
  line-height: 1.8;
}

.plot-summary p,
.review p {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  line-height: 1.8;
  text-align: justify;
}

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

.related-card {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}

.related-card:hover {
  transform: translateY(-4px);
}

.related-card .meta {
  color: #666;
  font-size: 0.9em;
  margin-bottom: 8px;
}

.related-card .one-line {
  font-size: 0.95em;
  line-height: 1.6;
  color: #555;
}

footer {
  background: var(--card-bg);
  padding: 30px 0;
  margin-top: 60px;
  text-align: center;
  color: #666;
  border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
  nav {
    padding: 0 10px;
  }

  nav a {
    padding: 12px 5px;
    font-size: 14px;
  }

  .hero h1 {
    font-size: 1.8em;
  }

  .hero .lead {
    font-size: 1em;
  }

  h1 {
    font-size: 1.5em;
  }

  h2 {
    font-size: 1.3em;
  }

  .video-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 15px;
  }
}