/* 大象传媒 - 全站样式表 */
/* 域名: ivbdy.cn */

/* 基础重置 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

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

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

ul, ol {
    list-style: none;
}

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

/* 头部导航 */
.header {
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A80 100%);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(255, 107, 157, 0.3);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    color: #fff;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255, 255, 255, 0.2);
}

/* 搜索栏 */
.search-bar {
    background: #ffeef3;
    padding: 20px 0;
}

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

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #FF6B9D;
    border-right: none;
    border-radius: 25px 0 0 25px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s ease;
}

.search-input:focus {
    border-color: #FF8A80;
}

.search-btn {
    padding: 12px 30px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A80 100%);
    color: #fff;
    border: none;
    border-radius: 0 25px 25px 0;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

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

/* 面包屑导航 */
.breadcrumb {
    background: #f8f8f8;
    padding: 12px 0;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #FF6B9D;
}

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

/* Hero区域 */
.hero {
    position: relative;
    height: 500px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.8) 0%, rgba(255, 138, 128, 0.6) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-btn {
    display: inline-block;
    padding: 15px 40px;
    background: #fff;
    color: #FF6B9D;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A80 100%);
    padding: 60px 0;
    text-align: center;
    color: #fff;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

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

/* 通用区块标题 */
.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
}

.section-title h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 10px;
}

.section-title p {
    color: #666;
    font-size: 16px;
}

/* 视频网格 */
.video-section {
    padding: 60px 0;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.video-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(255, 107, 157, 0.2);
}

.video-thumb {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    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%) scale(0);
    width: 60px;
    height: 60px;
    background: rgba(255, 107, 157, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.play-btn::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 20px solid #fff;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

.video-card:hover .play-btn {
    transform: translate(-50%, -50%) scale(1);
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: #333;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.video-stats {
    display: flex;
    gap: 10px;
}

/* 特色功能 */
.features {
    padding: 60px 0;
    background: #ffeef3;
}

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

.feature-item {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 157, 0.15);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A80 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin: 0 auto 20px;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.feature-item p {
    color: #666;
    font-size: 14px;
}

/* 社区功能网格 */
.community-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.community-feature {
    background: #fff;
    padding: 25px 15px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
}

.community-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 157, 0.15);
}

.community-feature h4 {
    font-size: 16px;
    margin: 10px 0 8px;
    color: #333;
}

.community-feature p {
    font-size: 13px;
    color: #666;
}

/* 社区Banner */
.community-banner {
    position: relative;
    height: 350px;
    overflow: hidden;
}

.community-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.community-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 107, 157, 0.85) 0%, rgba(255, 138, 128, 0.7) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.community-overlay h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.community-overlay p {
    font-size: 18px;
    opacity: 0.95;
}

/* 专家团队 */
.experts {
    padding: 60px 0;
}

.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.expert-card {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.expert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(255, 107, 157, 0.15);
}

.expert-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 20px;
    object-fit: cover;
    border: 4px solid #FF6B9D;
}

.expert-card h3 {
    font-size: 20px;
    margin-bottom: 5px;
    color: #333;
}

.expert-title {
    color: #FF6B9D;
    font-size: 14px;
    margin-bottom: 15px;
}

.expert-card p {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
    line-height: 1.7;
}

/* 专家资质标签 */
.expert-credentials {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: 20px;
}

.expert-credentials span {
    background: #ffeef3;
    color: #FF6B9D;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
}

.expert-btn {
    display: inline-block;
    padding: 10px 25px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A80 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 14px;
    transition: all 0.3s ease;
}

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

/* 用户评价 */
.testimonials {
    padding: 60px 0;
    background: #f8f8f8;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.testimonial-content {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h4 {
    font-size: 16px;
    color: #333;
}

.author-info span {
    font-size: 13px;
    color: #999;
}

/* 联系我们 */
.contact {
    padding: 60px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.contact-info h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #333;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A80 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}

.contact-item p {
    color: #666;
    font-size: 14px;
}

.qr-codes {
    display: flex;
    gap: 30px;
    justify-content: center;
}

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

.qr-item img {
    width: 150px;
    height: 150px;
    border-radius: 10px;
    margin-bottom: 10px;
}

.qr-item p {
    color: #666;
    font-size: 14px;
}

/* 工具卡片 */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

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

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(255, 107, 157, 0.15);
}

.tool-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.tool-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.tool-card p {
    color: #666;
    font-size: 14px;
    margin-bottom: 20px;
}

.tool-btn {
    display: inline-block;
    padding: 10px 25px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8A80 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 14px;
    transition: all 0.3s ease;
}

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

/* 页脚 */
.footer {
    background: #333;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand img {
    height: 40px;
    margin-bottom: 15px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    color: #aaa;
    font-size: 14px;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: #aaa;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: #FF6B9D;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: #888;
    font-size: 13px;
}

.footer-bottom a {
    color: #FF6B9D;
}

.social-links {
    display: flex;
    gap: 10px;
}

.social-links a {
    width: 35px;
    height: 35px;
    background: #444;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #FF6B9D;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .nav-menu {
        gap: 15px;
    }
    
    .nav-menu a {
        padding: 6px 12px;
        font-size: 14px;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .expert-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero {
        height: 400px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .section-title h2 {
        font-size: 26px;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .qr-codes {
        flex-direction: column;
        align-items: center;
    }
    
    .community-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .page-header h1 {
        font-size: 28px;
    }
    
    .community-banner {
        height: 280px;
    }
    
    .community-overlay h1 {
        font-size: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        height: 350px;
    }
    
    .hero-content h1 {
        font-size: 24px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .community-features {
        grid-template-columns: 1fr;
    }
    
    .expert-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .tool-grid {
        grid-template-columns: 1fr;
    }
}