/* 黑料网 - 全新CSS样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
}

/* 头部导航 */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    color: white;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

/* 搜索框 */
.search-bar {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
}

.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-container input {
    width: 100%;
    padding: 12px 50px 12px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 15px;
    transition: border-color 0.3s;
}

.search-container input:focus {
    outline: none;
    border-color: #667eea;
}

.search-container button {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: #667eea;
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 20px;
    cursor: pointer;
    transition: background 0.3s;
}

.search-container button:hover {
    background: #5568d3;
}

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

/* 面包屑导航 */
.breadcrumb {
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #667eea;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 标题样式 */
h1 {
    font-size: 32px;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

h2 {
    font-size: 28px;
    color: #333;
    margin: 30px 0 20px;
    padding-left: 15px;
    border-left: 4px solid #667eea;
}

h3 {
    font-size: 20px;
    color: #333;
    margin: 15px 0;
}

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

.video-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 比例 */
    overflow: hidden;
    background: #f0f0f0;
}

.video-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(102, 126, 234, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-card:hover .play-button {
    opacity: 1;
}

.play-button::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid white;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}

.video-info {
    padding: 15px;
}

.video-tag {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    margin-bottom: 8px;
}

.video-title {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: #999;
}

.video-stats {
    display: flex;
    gap: 15px;
    font-size: 13px;
    color: #666;
    margin-top: 8px;
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 专家卡片 */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.expert-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.expert-card:hover {
    transform: translateY(-5px);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 15px;
    object-fit: cover;
}

.expert-name {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
}

.expert-title {
    font-size: 14px;
    color: #667eea;
    margin-bottom: 10px;
}

.expert-credentials {
    font-size: 13px;
    color: #666;
    margin-bottom: 10px;
    line-height: 1.8;
}

.expert-social {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

.social-link {
    color: #667eea;
    text-decoration: none;
    font-size: 13px;
}

.expert-contact {
    margin-top: 15px;
}

.contact-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
}

.contact-btn:hover {
    background: #5568d3;
}

/* 用户评价 */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.review-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.review-user {
    flex: 1;
}

.review-username {
    font-weight: bold;
    color: #333;
}

.review-rating {
    color: #ffc107;
    font-size: 14px;
}

.review-date {
    font-size: 12px;
    color: #999;
}

.review-content {
    color: #666;
    line-height: 1.8;
    margin-bottom: 10px;
}

.review-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.review-tag {
    background: #f0f0f0;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    color: #666;
}

/* 数据统计 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.stat-number {
    font-size: 32px;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: #666;
}

/* 合作品牌 */
.partners {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin: 20px 0;
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.partner-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: #f8f8f8;
    border-radius: 8px;
    transition: transform 0.3s;
}

.partner-logo:hover {
    transform: scale(1.05);
}

.partner-logo img {
    max-width: 100%;
    height: auto;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.partner-logo:hover img {
    opacity: 1;
}

/* FAQ */
.faq-section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin: 20px 0;
}

.faq-item {
    border-bottom: 1px solid #e0e0e0;
    padding: 20px 0;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.faq-answer {
    color: #666;
    line-height: 1.8;
}

/* 页脚 */
footer {
    background: #2c3e50;
    color: white;
    padding: 40px 0 20px;
    margin-top: 40px;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    color: white;
    margin-bottom: 15px;
}

.footer-section p,
.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    line-height: 2;
    font-size: 14px;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
    color: #bdc3c7;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }
    
    .expert-grid {
        grid-template-columns: 1fr;
    }
    
    .review-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    h1 {
        font-size: 24px;
    }
    
    h2 {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .partner-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}