/* 大象传媒 - 主样式表 */
/* 品牌色彩：粉色渐变 #FF6B9D 到 #FF8A65 */

:root {
    --primary-pink: #FF6B9D;
    --primary-coral: #FF8A65;
    --dark-bg: #1a1a2e;
    --light-bg: #f8f9fa;
    --text-dark: #2d3436;
    --text-light: #636e72;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary-pink), var(--primary-coral));
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

img {
    max-width: 100%;
    height: auto;
}

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

/* 头部导航 */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-dark);
    padding: 8px 0;
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-pink);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

/* 搜索框 */
.search-bar {
    background: var(--light-bg);
    padding: 15px 0;
    margin-top: 75px;
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid transparent;
    border-radius: 25px;
    font-size: 1rem;
    background: var(--white);
    transition: border-color 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-pink);
}

.search-btn {
    padding: 12px 30px;
    background: var(--gradient);
    color: var(--white);
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 157, 0.4);
}

/* Hero区域 */
.hero {
    background: var(--gradient);
    padding: 80px 0;
    color: var(--white);
    text-align: center;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 30px;
}

.hero-btn {
    display: inline-block;
    padding: 15px 40px;
    background: var(--white);
    color: var(--primary-pink);
    border-radius: 30px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* Banner轮播 */
.banner-section {
    padding: 40px 0;
    background: var(--light-bg);
}

.banner-slider {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.banner-slide {
    display: none;
}

.banner-slide.active {
    display: block;
}

.banner-slide img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* 区块标题 */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.section-title p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.section-title span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 视频卡片 */
.video-section {
    padding: 60px 0;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.video-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.video-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .video-thumb img {
    transform: scale(1.1);
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 107, 157, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 18px solid var(--white);
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    margin-left: 5px;
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--text-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-stats {
    display: flex;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 模块区块 */
.module-section {
    padding: 60px 0;
    background: var(--light-bg);
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.module-card {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.module-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.module-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--white);
}

.module-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.module-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 专家展示 */
.expert-section {
    padding: 60px 0;
}

.expert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.expert-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.expert-avatar {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.expert-info {
    padding: 20px;
}

.expert-info h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.expert-info .title {
    color: var(--primary-pink);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.expert-info p {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 15px;
}

.expert-btn {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gradient);
    color: var(--white);
    border-radius: 20px;
    font-size: 0.85rem;
    transition: transform 0.3s ease;
}

.expert-btn:hover {
    transform: scale(1.05);
}

/* 用户评价 */
.review-section {
    padding: 60px 0;
    background: var(--light-bg);
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: bold;
}

.review-name h4 {
    font-size: 1rem;
    color: var(--text-dark);
}

.review-name span {
    font-size: 0.85rem;
    color: var(--text-light);
}

.review-stars {
    color: #ffc107;
    margin-bottom: 10px;
}

.review-text {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 合作品牌 */
.partner-section {
    padding: 60px 0;
}

.partner-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    align-items: center;
}

.partner-logo {
    height: 50px;
    opacity: 0.6;
    transition: opacity 0.3s ease;
    filter: grayscale(100%);
}

.partner-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* 联系我们 */
.contact-section {
    padding: 60px 0;
    background: var(--dark-bg);
    color: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.contact-item h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-pink);
}

.contact-item p {
    margin-bottom: 10px;
    opacity: 0.9;
}

.contact-qrcode {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.qrcode-item {
    text-align: center;
}

.qrcode-item img {
    width: 120px;
    height: 120px;
    border-radius: 10px;
    margin-bottom: 10px;
}

.qrcode-item span {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* 页脚 */
.footer {
    background: #0d0d1a;
    padding: 40px 0 20px;
    color: var(--white);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo img {
    height: 35px;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-pink);
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.social-icon:hover {
    background: var(--gradient);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.85rem;
    opacity: 0.7;
}

/* FAQ区块 */
.faq-section {
    padding: 60px 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.05);
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-question:hover {
    color: var(--primary-pink);
}

.faq-answer {
    padding: 0 20px 20px;
    color: var(--text-light);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .expert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .search-bar {
        margin-top: 120px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .module-grid {
        grid-template-columns: 1fr;
    }
    
    .expert-grid {
        grid-template-columns: 1fr;
    }
    
    .review-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .hero h1 {
        font-size: 1.6rem;
    }
}

/* 懒加载图片 */
img[data-src] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[data-src].loaded {
    opacity: 1;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 15px 0;
    background: var(--light-bg);
}

.breadcrumb-list {
    display: flex;
    gap: 10px;
    list-style: none;
    font-size: 0.9rem;
}

.breadcrumb-list li::after {
    content: '/';
    margin-left: 10px;
    color: var(--text-light);
}

.breadcrumb-list li:last-child::after {
    display: none;
}

.breadcrumb-list a {
    color: var(--text-light);
}

.breadcrumb-list a:hover {
    color: var(--primary-pink);
}

/* 内页样式 */
.page-header {
    background: var(--gradient);
    padding: 60px 0;
    color: var(--white);
    text-align: center;
    margin-top: 75px;
}

.page-header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.page-header p {
    opacity: 0.9;
}

.page-content {
    padding: 60px 0;
}

/* 分类筛选 */
.filter-bar {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: var(--white);
    border: 2px solid var(--light-bg);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient);
    color: var(--white);
    border-color: transparent;
}

/* 工具卡片 */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tool-card {
    background: var(--white);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

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

.tool-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: var(--white);
}

.tool-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.tool-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.tool-btn {
    display: inline-block;
    padding: 10px 25px;
    background: var(--gradient);
    color: var(--white);
    border-radius: 25px;
    font-size: 0.9rem;
}

/* 社区帖子 */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.post-card {
    background: var(--white);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    display: flex;
    gap: 20px;
}

.post-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient);
    flex-shrink: 0;
}

.post-content {
    flex: 1;
}

.post-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.post-author {
    font-weight: 600;
    color: var(--text-dark);
}

.post-time {
    color: var(--text-light);
    font-size: 0.85rem;
}

.post-text {
    color: var(--text-light);
    margin-bottom: 15px;
}

.post-actions {
    display: flex;
    gap: 20px;
}

.post-action {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-light);
    font-size: 0.9rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.post-action:hover {
    color: var(--primary-pink);
}


/* 视频时长标签 */
.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.75);
    color: #fff;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

/* 视频类型标签 */
.video-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A65 100%);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
}

/* 视频描述 */
.video-desc {
    font-size: 12px;
    color: #888;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 视频元信息 */
.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: #999;
    margin-bottom: 8px;
}

/* 视频标签列表 */
.video-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: 8px;
}

.video-tags .tag {
    background: #f5f5f5;
    color: #666;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
    transition: all 0.3s ease;
}

.video-tags .tag:hover {
    background: #FFE4EC;
    color: #FF6B9D;
}

/* 评价日期 */
.review-date {
    font-size: 11px;
    color: #aaa;
    margin-left: 10px;
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A65 100%);
    padding: 60px 0;
    text-align: center;
    color: #fff;
    margin-top: 75px;
}

.page-header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 1rem;
    opacity: 0.9;
}

/* 面包屑导航 */
.breadcrumb {
    background: #fff;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 10px;
    font-size: 14px;
}

.breadcrumb-list li::after {
    content: '>';
    margin-left: 10px;
    color: #999;
}

.breadcrumb-list li:last-child::after {
    content: '';
}

.breadcrumb-list a {
    color: #FF6B9D;
}

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

/* 页面内容 */
.page-content {
    padding: 60px 0;
    background: #f8f9fa;
}

/* 关于我们页面专家信息样式 */
.about-intro p strong {
    color: #FF6B9D;
}

.expert-info p strong {
    color: #333;
    font-weight: 600;
}