/* 探花网站 - 主样式表 */

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #FF6B35;
    --secondary-color: #004E89;
    --accent-color: #F7931E;
    --bg-color: #F5F5F5;
    --text-color: #333333;
    --white: #FFFFFF;
    --gray-light: #E0E0E0;
    --gray-dark: #666666;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

/* 导航栏样式 */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 50px;
    height: 50px;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--secondary-color);
    text-decoration: none;
}

.logo-text span {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* 搜索框样式 */
.search-container {
    background-color: var(--bg-color);
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--gray-light);
}

.search-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.search-input {
    flex: 1;
    padding: 0.8rem 1.2rem;
    border: 2px solid var(--gray-light);
    border-right: none;
    border-radius: 25px 0 0 25px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.search-input:focus {
    border-color: var(--primary-color);
}

.search-button {
    padding: 0.8rem 2rem;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 0 25px 25px 0;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-button:hover {
    background-color: #E55A2B;
}

/* Hero区域 */
.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: var(--white);
    padding: 4rem 2rem;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--accent-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* 区块标题 */
.section-title {
    font-size: 2.5rem;
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
}

/* 网格布局 */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* 卡片样式 */
.card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.card h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card p {
    color: var(--gray-dark);
    line-height: 1.8;
}

/* 视频卡片 */
.video-card {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    cursor: pointer;
}

.video-thumbnail {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-card:hover .video-overlay {
    opacity: 1;
}

.play-button {
    width: 80px;
    height: 80px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.video-info {
    padding: 1rem;
    background-color: var(--white);
}

.video-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.video-stats {
    display: flex;
    gap: 1.5rem;
    color: var(--gray-dark);
    font-size: 0.9rem;
}

/* 专家卡片 */
.expert-card {
    text-align: center;
}

.expert-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    object-fit: cover;
    border: 4px solid var(--primary-color);
}

.expert-name {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.expert-title {
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 1rem;
}

.expert-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.social-link {
    color: var(--gray-dark);
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-link:hover {
    color: var(--primary-color);
}

/* 合作品牌 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    align-items: center;
    margin-top: 2rem;
}

.partner-logo {
    width: 100%;
    height: 100px;
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter 0.3s;
}

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

/* FAQ样式 */
.faq-item {
    background-color: var(--white);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 0.8rem;
}

.faq-answer {
    color: var(--gray-dark);
    line-height: 1.8;
}

/* 用户评论 */
.review-card {
    background-color: var(--white);
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 5px;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.reviewer-name {
    font-weight: bold;
    color: var(--secondary-color);
}

.review-rating {
    color: var(--accent-color);
}

.review-text {
    color: var(--gray-dark);
    line-height: 1.8;
}

/* 页脚样式 */
.footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 3rem 2rem 1.5rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.footer-section a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.qrcode-container {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-top: 1.5rem;
}

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

.qrcode-item img {
    width: 120px;
    height: 120px;
    border-radius: 10px;
    background-color: var(--white);
    padding: 5px;
}

.qrcode-item p {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.8;
}

/* 社交分享 */
.share-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
}

.share-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 25px;
    color: var(--white);
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.3s;
}

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

.share-wechat { background-color: #07C160; }
.share-weibo { background-color: #E6162D; }
.share-douyin { background-color: #000000; }
.share-bilibili { background-color: #00A1D6; }

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* 面包屑导航 */
.breadcrumb {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--gray-dark);
    text-decoration: none;
}

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

.breadcrumb span {
    margin: 0 0.5rem;
    color: var(--gray-dark);
}

/* 加载动画 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s;
}

.lazy-load.loaded {
    opacity: 1;
}