/* 51吃瓜 - jf88.cn 样式表 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
}

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

/* 头部导航 */
.header {
    background: linear-gradient(135deg, #ff6b9d 0%, #c44569 100%);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #fff;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 24px;
    font-weight: bold;
}

.nav {
    display: flex;
    gap: 25px;
}

.nav a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    padding: 8px 15px;
    border-radius: 20px;
    transition: background 0.3s;
}

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

/* 搜索框 */
.search-box {
    background: #fff;
    padding: 20px 0;
    border-bottom: 1px solid #eee;
}

.search-form {
    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;
}

.search-btn {
    padding: 12px 30px;
    background: linear-gradient(135deg, #ff6b9d 0%, #c44569 100%);
    color: #fff;
    border: none;
    border-radius: 0 25px 25px 0;
    font-size: 16px;
    cursor: pointer;
    transition: opacity 0.3s;
}

.search-btn:hover {
    opacity: 0.9;
}

/* 面包屑 */
.breadcrumb {
    background: #fff;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

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

.breadcrumb-list li:not(:last-child)::after {
    content: ">";
    margin: 0 10px;
    color: #999;
}

.breadcrumb-list a {
    color: #ff6b9d;
    text-decoration: none;
}

/* Banner轮播 */
.banner {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s;
}

.banner-slide.active {
    opacity: 1;
}

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

.banner-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    padding: 60px 0 40px;
    color: #fff;
}

.banner-content h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.banner-content p {
    font-size: 18px;
    opacity: 0.9;
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #ff6b9d 0%, #c44569 100%);
    padding: 40px 0;
    color: #fff;
    text-align: center;
}

.page-header h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

/* 通用区块 */
.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 10px;
}

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

/* 服务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

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

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
}

.service-card p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

/* 视频卡片 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

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

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

.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 0.3s;
}

.video-card:hover .video-thumb img {
    transform: scale(1.05);
}

.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%;
    opacity: 0;
    transition: opacity 0.3s;
}

.play-btn::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 55%;
    transform: translate(-50%, -50%);
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent #fff;
}

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

.video-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(255,107,157,0.9);
    color: #fff;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    gap: 15px;
    color: #999;
    font-size: 13px;
}

/* 专家卡片 */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.expert-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
}

.expert-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.expert-info {
    padding: 20px;
}

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

.expert-info .title {
    color: #ff6b9d;
    font-size: 14px;
    margin-bottom: 10px;
}

.expert-info .credentials {
    color: #666;
    font-size: 14px;
    margin-bottom: 8px;
    line-height: 1.6;
}

.expert-info .awards {
    color: #f39c12;
    font-size: 13px;
    margin-bottom: 15px;
}

.expert-actions {
    display: flex;
    gap: 10px;
}

.btn-contact,
.btn-works {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-contact {
    background: #ff6b9d;
    color: #fff;
}

.btn-works {
    background: #fff;
    color: #ff6b9d;
    border: 1px solid #ff6b9d;
}

.btn-contact:hover,
.btn-works:hover {
    opacity: 0.8;
}

/* HowTo步骤 */
.howto-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.howto-step {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #ff6b9d 0%, #c44569 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
}

.howto-step h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

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

/* 评价卡片 */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.review-card {
    background: #fff;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

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

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 15px;
}

.review-user h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 3px;
}

.rating {
    color: #f39c12;
    font-size: 14px;
}

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

.review-card > p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

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

.faq-item {
    background: #fff;
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    padding: 20px;
    font-size: 16px;
    font-weight: 500;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: "+";
    font-size: 24px;
    color: #ff6b9d;
}

.faq-item.active .faq-question::after {
    content: "-";
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s, padding 0.3s;
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 500px;
}

.faq-answer p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

/* 合作伙伴 */
.partners-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.partner-logo {
    height: 80px;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.3s;
}

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

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

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

.contact-info p {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
    line-height: 1.8;
}

.contact-qr {
    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;
}

/* 社交分享 */
.share-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.share-btn {
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    color: #fff;
    font-size: 14px;
    transition: opacity 0.3s;
}

.share-btn:hover {
    opacity: 0.8;
}

.share-wechat {
    background: #07c160;
}

.share-weibo {
    background: #e6162d;
}

.share-douyin {
    background: #000;
}

.share-bilibili {
    background: #fb7299;
}

/* 内容盒子 */
.content-box {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.content-box h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #ff6b9d;
}

.content-box h3 {
    font-size: 18px;
    color: #333;
    margin: 25px 0 10px;
}

.content-box p {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.legal-content h2 {
    margin-top: 30px;
}

.legal-content h2:first-child {
    margin-top: 0;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.footer-logo img {
    height: 40px;
    margin-right: 10px;
}

.footer-logo h3 {
    font-size: 20px;
}

.footer-col h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-col p {
    color: #bdc3c7;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 8px;
}

.footer-col ul {
    list-style: none;
}

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

.footer-col ul a {
    color: #bdc3c7;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-col ul a:hover {
    color: #ff6b9d;
}

.footer-qr {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.footer-qr img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #34495e;
}

.footer-bottom p {
    color: #bdc3c7;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .howto-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .nav a {
        font-size: 14px;
        padding: 6px 12px;
    }
    
    .banner {
        height: 300px;
    }
    
    .banner-content h2 {
        font-size: 24px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-title h2 {
        font-size: 22px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-qr {
        justify-content: center;
    }
    
    .howto-steps {
        grid-template-columns: 1fr;
    }
    
    .experts-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-qr {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 18px;
    }
    
    .search-input,
    .search-btn {
        padding: 10px 15px;
        font-size: 14px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}