:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --bg-color: #f5f5f5;
    --card-bg: #ffffff;
    --text-color: #333;
    --border-color: #e0e0e0;
    --hover-bg: #f9f9f9;
}

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

.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 8px;
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 32px;
    margin-bottom: 20px;
    line-height: 1.4;
}

.site-intro {
    font-size: 18px;
    line-height: 1.8;
    max-width: 900px;
    margin: 0 auto;
}

.content-section {
    margin-bottom: 50px;
}

.content-section h2 {
    font-size: 28px;
    margin-bottom: 10px;
    color: var(--primary-color);
    border-left: 4px solid var(--secondary-color);
    padding-left: 15px;
}

.section-desc {
    color: #666;
    margin-bottom: 25px;
    padding-left: 19px;
}

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

.video-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    transition: all 0.3s;
}

.video-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.video-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.video-card h3 a:hover {
    color: var(--secondary-color);
}

.meta {
    font-size: 13px;
    color: #888;
    margin-bottom: 10px;
}

.desc {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

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

.more-link a {
    display: inline-block;
    padding: 12px 30px;
    background: var(--secondary-color);
    color: white;
    border-radius: 25px;
    transition: all 0.3s;
}

.more-link a:hover {
    background: var(--primary-color);
    transform: scale(1.05);
}

.site-desc {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
    line-height: 2;
    font-size: 15px;
    color: #555;
}

.site-desc a {
    color: var(--secondary-color);
    text-decoration: underline;
}

.page-header {
    text-align: center;
    padding: 40px 20px;
    margin-bottom: 40px;
    background: var(--card-bg);
    border-radius: 8px;
}

.page-header h1 {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.page-intro {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

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

.list-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    gap: 15px;
    align-items: flex-start;
    transition: all 0.3s;
}

.list-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.list-item .rank {
    font-size: 24px;
    font-weight: bold;
    color: var(--accent-color);
    min-width: 40px;
}

.list-item .date {
    font-size: 14px;
    font-weight: bold;
    color: var(--secondary-color);
    background: #e3f2fd;
    padding: 5px 10px;
    border-radius: 4px;
    min-width: 60px;
    text-align: center;
}

.item-content {
    flex: 1;
}

.item-content h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.item-content h3 a:hover {
    color: var(--secondary-color);
}

.tags {
    font-size: 12px;
    color: #999;
    margin-bottom: 8px;
}

.review {
    font-size: 14px;
    color: #777;
    font-style: italic;
    margin-top: 8px;
    padding-left: 15px;
    border-left: 3px solid var(--border-color);
}

.detail-page {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.detail-header {
    text-align: center;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 30px;
}

.detail-header h1 {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.subtitle {
    font-size: 16px;
    color: #888;
}

.detail-section {
    margin-bottom: 40px;
}

.detail-section h2 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-left: 12px;
    border-left: 4px solid var(--secondary-color);
}

.info-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px 20px;
    line-height: 1.8;
}

.info-grid dt {
    font-weight: bold;
    color: #666;
}

.info-grid dd {
    color: #333;
}

.oneline {
    font-size: 18px;
    line-height: 1.8;
    color: var(--secondary-color);
    font-weight: 500;
    padding: 20px;
    background: #f0f8ff;
    border-left: 4px solid var(--secondary-color);
    border-radius: 4px;
}

.summary p {
    font-size: 16px;
    line-height: 2;
    margin-bottom: 15px;
    text-indent: 2em;
    color: #444;
}

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

.related-card {
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    transition: all 0.3s;
}

.related-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-color: var(--secondary-color);
}

.related-card h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.related-card h3 a:hover {
    color: var(--secondary-color);
}

footer {
    text-align: center;
    padding: 30px 20px;
    color: #888;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    margin-top: 60px;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 24px; }
    .site-intro { font-size: 15px; }
    .content-section h2 { font-size: 22px; }
    .video-grid { grid-template-columns: 1fr; }
    .page-header h1 { font-size: 28px; }
    .detail-page { padding: 20px; }
    .detail-header h1 { font-size: 28px; }
    .related-grid { grid-template-columns: 1fr; }
}