/* 欢迎回家海角 - 主样式表 */
/* 品牌：欢迎回家海角 | 域名：kjl88.com */

/* CSS Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根变量 */
:root {
    --primary-color: #ff6b9d;
    --secondary-color: #c44569;
    --accent-color: #f8a5c2;
    --dark-color: #2d3436;
    --light-color: #f9f9f9;
    --gradient-primary: linear-gradient(135deg, #ff6b9d 0%, #c44569 100%);
    --gradient-secondary: linear-gradient(135deg, #f8a5c2 0%, #ff6b9d 100%);
    --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 20px rgba(0,0,0,0.15);
    --shadow-heavy: 0 8px 30px rgba(0,0,0,0.2);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* 基础样式 */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

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

/* 头部导航 - 欢迎回家海角品牌 */
.header {
    background: #fff;
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

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

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--secondary-color);
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

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

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

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

/* 搜索框 */
.search-bar {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.search-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.search-input {
    width: 100%;
    max-width: 500px;
    padding: 12px 20px;
    border: 2px solid #ddd;
    border-radius: 25px;
    font-size: 1rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.2);
}

.search-btn {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* 横幅区域 */
.banner {
    position: relative;
    height: 500px;
    overflow: hidden;
}

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

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

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(196, 69, 105, 0.7) 0%, rgba(255, 107, 157, 0.5) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-content {
    text-align: center;
    color: #fff;
    padding: 20px;
}

.banner-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.banner-content p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    max-width: 600px;
}

.btn-primary {
    display: inline-block;
    background: #fff;
    color: var(--secondary-color);
    padding: 15px 40px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: bold;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

/* 区块标题 */
.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-title p {
    color: #666;
    font-size: 1.1rem;
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.video-card {
    background: #fff;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    position: relative;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.video-thumbnail {
    position: relative;
    padding-top: 133%;
    overflow: hidden;
}

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

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

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 70px;
    height: 70px;
    background: rgba(255, 107, 157, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    cursor: pointer;
}

.play-btn::before {
    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-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    font-size: 1rem;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    color: #999;
    font-size: 0.85rem;
}

.video-stats {
    display: flex;
    gap: 15px;
}

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

/* 专家展示 */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.expert-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.expert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.expert-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 4px solid var(--accent-color);
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.expert-card h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.expert-title {
    color: var(--primary-color);
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.expert-desc {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.expert-btns {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.btn-outline {
    padding: 8px 20px;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: #fff;
}

/* 功能模块 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}

.feature-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

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

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.feature-card p {
    color: #666;
    font-size: 0.95rem;
}

/* 用户评价 */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.review-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow-light);
}

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

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

.review-user h4 {
    font-size: 1rem;
    margin-bottom: 3px;
}

.review-stars {
    color: #ffc107;
}

.review-content {
    color: #555;
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 合作品牌 */
.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    align-items: center;
}

.partner-logo {
    width: 120px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

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

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

.faq-item {
    background: #fff;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    box-shadow: var(--shadow-light);
    overflow: hidden;
}

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

.faq-question:hover {
    background: #f8f9fa;
}

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

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

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.contact-card {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
}

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

.qr-code {
    width: 150px;
    height: 150px;
    margin: 0 auto 15px;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.contact-info {
    color: #666;
    font-size: 0.95rem;
}

/* 社交分享 */
.social-share {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.social-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-btn:hover {
    transform: translateY(-3px);
}

.social-btn.wechat { background: #07c160; }
.social-btn.weibo { background: #e6162d; }
.social-btn.douyin { background: #000; }
.social-btn.bilibili { background: #fb7299; }

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: #fff;
    padding: 50px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
}

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

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

.footer-col ul a {
    color: #aaa;
    font-size: 0.95rem;
}

.footer-col ul a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
    color: #888;
    font-size: 0.9rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

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

/* 面包屑导航 */
.breadcrumb {
    padding: 15px 0;
    background: #f8f9fa;
    border-bottom: 1px solid #eee;
}

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

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

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

.breadcrumb-list a {
    color: #666;
}

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

/* 内页样式 */
.page-header {
    background: var(--gradient-primary);
    padding: 60px 0;
    text-align: center;
    color: #fff;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
    }
    
    .banner-content h1 {
        font-size: 2rem;
    }
    
    .banner {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .banner {
        height: 350px;
    }
    
    .banner-content h1 {
        font-size: 1.8rem;
    }
    
    .banner-content p {
        font-size: 1rem;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-title h2 {
        font-size: 1.8rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .expert-grid,
    .feature-grid,
    .review-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .search-input {
        max-width: 100%;
    }
}

/* 懒加载占位 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--dark-color);
    border-radius: 2px;
    transition: var(--transition);
}

@media (max-width: 992px) {
    .mobile-menu-btn {
        display: flex;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* 工具提示 */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark-color);
    color: #fff;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}