/* 久久操 - 外部样式表 */
/* 品牌：久久操 | 域名：wglrq.cn */

:root {
    --primary-color: #ff6b8a;
    --secondary-color: #ff8fa3;
    --accent-color: #ffd1dc;
    --dark-color: #2d2d2d;
    --light-color: #fff5f7;
    --text-color: #333;
    --text-light: #666;
    --gradient-primary: linear-gradient(135deg, #ff6b8a 0%, #ff8fa3 50%, #ffb6c1 100%);
    --shadow-light: 0 2px 10px rgba(255, 107, 138, 0.1);
    --shadow-medium: 0 4px 20px rgba(255, 107, 138, 0.15);
    --shadow-heavy: 0 8px 30px rgba(255, 107, 138, 0.2);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

* {
    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-color);
    background-color: #fff;
}

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

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

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

/* 头部导航 */
.header {
    background: #fff;
    box-shadow: var(--shadow-light);
    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;
    color: var(--primary-color);
}

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

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

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

.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 {
    width: 100%;
}

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

.search-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 12px 50px 12px 20px;
    border: 2px solid var(--accent-color);
    border-radius: 25px;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

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

.search-btn {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--gradient-primary);
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
}

.search-btn:hover {
    transform: translateY(-50%) scale(1.05);
}

/* Hero区域 */
.hero {
    background: var(--gradient-primary);
    padding: 80px 0;
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-banner.jpg') center/cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    display: block;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* 视频卡片 */
.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(-5px);
    box-shadow: var(--shadow-heavy);
}

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

.video-thumbnail img {
    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%);
    width: 60px;
    height: 60px;
    background: rgba(255, 107, 138, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 18px solid #fff;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}

.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-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-light);
    font-size: 0.85rem;
}

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

/* 内容区块 */
.section {
    padding: 60px 0;
}

.section-alt {
    background: var(--light-color);
}

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

.section-title h2 {
    font-size: 2rem;
    color: var(--dark-color);
    margin-bottom: 10px;
}

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

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

/* 特色模块 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: #fff;
    padding: 30px;
    border-radius: var(--border-radius);
    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: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
}

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

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

/* 专家展示 */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

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

.expert-card:hover {
    box-shadow: var(--shadow-medium);
}

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

.expert-info {
    padding: 20px;
    text-align: center;
}

.expert-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 5px;
}

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

.expert-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

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

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-light);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

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

.partner-logo {
    width: 120px;
    height: 80px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

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

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

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

.review-stars {
    color: #ffc107;
    margin-bottom: 15px;
}

.review-text {
    color: var(--text-color);
    font-size: 0.95rem;
    margin-bottom: 15px;
    line-height: 1.7;
}

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

.review-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.review-name {
    font-weight: 600;
    font-size: 0.9rem;
}

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

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

.contact-icon {
    width: 45px;
    height: 45px;
    background: var(--light-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.qrcode-grid {
    display: flex;
    gap: 30px;
}

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

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

.qrcode-item p {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* 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;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

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

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

.footer-brand img {
    height: 50px;
    margin-bottom: 15px;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #fff;
}

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

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

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

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

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

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    color: rgba(255,255,255,0.6);
    font-size: 0.85rem;
}

/* 面包屑 */
.breadcrumb {
    padding: 15px 0;
    background: var(--light-color);
    margin-top: 75px;
}

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

.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-color);
}

/* 响应式 */
@media (max-width: 992px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .feature-grid,
    .expert-grid,
    .review-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
    }
    
    .nav-menu {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0;
        padding-top: 15px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu a {
        padding: 12px 0;
        border-bottom: 1px solid var(--light-color);
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-grid,
    .expert-grid,
    .review-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .section-title h2 {
        font-size: 1.5rem;
    }
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-color);
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
}

/* 懒加载占位 */
.lazy-load {
    background: var(--light-color);
    min-height: 200px;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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


/* 专家资质列表样式 */
.expert-credentials {
    list-style: none;
    padding: 0;
    margin: 15px 0;
    font-size: 13px;
    line-height: 1.8;
    text-align: left;
}

.expert-credentials li {
    margin-bottom: 5px;
    color: #666;
}

.expert-credentials li strong {
    color: var(--primary-color);
}

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

.video-tag {
    background: var(--gradient-primary);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
}

/* 首页面包屑特殊样式 */
.breadcrumb-item.active span {
    color: var(--primary-color);
    font-weight: 500;
}