/* 香蕉视频 - 全新原创样式 */
/* 域名: jumbo-power.com.cn */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ===== 变量定义 ===== */
:root {
    --primary-color: #FF6B9D;
    --primary-dark: #E85A8A;
    --secondary-color: #FF8E72;
    --accent-color: #9B59B6;
    --text-primary: #2D3436;
    --text-secondary: #636E72;
    --text-light: #B2BEC3;
    --bg-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --bg-gradient: linear-gradient(135deg, #FF6B9D 0%, #FF8E72 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 容器 ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

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

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

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--bg-gradient);
    transition: width 0.3s ease;
}

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

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

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

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===== 搜索框 ===== */
.search-bar {
    background: var(--bg-light);
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    margin-top: 70px;
}

.search-wrapper {
    display: flex;
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: 50px;
    padding: 8px 20px;
    box-shadow: var(--shadow-sm);
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 0.95rem;
    padding: 8px 12px;
    background: transparent;
}

.search-btn {
    background: var(--bg-gradient);
    border: none;
    color: white;
    padding: 10px 24px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

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

/* ===== Hero区域 ===== */
.hero {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
    text-align: center;
    padding: 60px 20px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--bg-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(255,107,157,0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255,107,157,0.5);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

/* ===== 区块标题 ===== */
.section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ===== 视频卡片 ===== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.video-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

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

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .video-thumb img {
    transform: scale(1.08);
}

.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: var(--transition);
    opacity: 0;
}

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

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

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.75);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.video-info {
    padding: 16px;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ===== 特色功能 ===== */
.features {
    background: var(--bg-light);
}

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

.feature-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

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

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

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.expert-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.expert-avatar {
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.expert-card:hover .expert-avatar img {
    transform: scale(1.05);
}

.expert-info {
    padding: 24px;
    text-align: center;
}

.expert-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.expert-role {
    font-size: 0.9rem;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.expert-bio {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== 用户评价 ===== */
.testimonials {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.testimonials .section-title,
.testimonials .section-subtitle {
    color: white;
}

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

.testimonial-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.2);
}

.testimonial-content {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

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

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
}

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

.testimonial-name {
    font-weight: 600;
}

.testimonial-title {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ===== 合作品牌 ===== */
.partners {
    background: var(--bg-white);
}

.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 40px;
}

.partner-logo {
    opacity: 0.6;
    transition: var(--transition);
    filter: grayscale(100%);
}

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

/* ===== 联系我们 ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-card {
    background: var(--bg-white);
    padding: 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.contact-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.contact-info {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.qrcode-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
    flex-wrap: wrap;
}

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

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

.qrcode-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ===== 页脚 ===== */
.footer {
    background: #1a1a2e;
    color: #ccc;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: #999;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    padding: 8px 0;
    font-size: 0.9rem;
    color: #999;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.copyright {
    font-size: 0.85rem;
    color: #666;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: #333;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

/* ===== 面包屑 ===== */
.breadcrumb {
    padding: 15px 0;
    background: var(--bg-light);
    margin-top: 70px;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.breadcrumb-item {
    color: var(--text-secondary);
}

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

.breadcrumb-separator {
    color: var(--text-light);
}

/* ===== 内页Banner ===== */
.page-banner {
    background: var(--bg-gradient);
    padding: 80px 0;
    text-align: center;
    color: white;
    margin-top: 70px;
}

.page-banner h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

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

/* ===== 内容区域 ===== */
.content-section {
    padding: 60px 0;
}

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

.sidebar {
    position: sticky;
    top: 90px;
}

.sidebar-widget {
    background: var(--bg-white);
    padding: 25px;
    border-radius: var(--radius-md);
    margin-bottom: 25px;
    box-shadow: var(--shadow-sm);
}

.widget-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--bg-light);
}

/* ===== 分页 ===== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.page-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--bg-white);
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.page-link:hover,
.page-link.active {
    background: var(--bg-gradient);
    color: white;
}

/* ===== 加载动画 ===== */
.lazy-load {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.lazy-load.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 60px;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid var(--bg-light);
        width: 100%;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .search-bar {
        margin-top: 60px;
    }
    
    .breadcrumb,
    .page-banner {
        margin-top: 60px;
    }
}

@media (max-width: 480px) {
    .hero {
        min-height: 400px;
    }
    
    .hero h1 {
        font-size: 1.6rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
}

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

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--bg-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
}