/* 糖心vlog - 全站样式表 */
/* sjvoh.cn */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #FF6B9D;
    --secondary-color: #FF8A80;
    --accent-color: #FFB6C1;
    --dark-color: #2D3436;
    --light-color: #F8F9FA;
    --text-color: #333333;
    --gray-color: #666666;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

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

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

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

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

/* 头部导航 */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    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;
    gap: 10px;
}

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

.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: white;
}

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

.nav-menu a {
    color: white;
    font-size: 16px;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

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

/* 搜索框 */
.search-bar {
    background: rgba(255,255,255,0.95);
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

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

.search-input {
    width: 500px;
    padding: 12px 20px;
    border: 2px solid var(--primary-color);
    border-radius: 25px;
    font-size: 16px;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    box-shadow: 0 0 10px rgba(255,107,157,0.3);
}

.search-btn {
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(255,107,157,0.4);
}

/* Banner轮播 */
.banner {
    position: relative;
    height: 500px;
    overflow: hidden;
}

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

.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;
    padding: 40px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: white;
}

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

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

/* 视频卡片 */
.video-section {
    padding: 60px 0;
}

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

.section-title {
    font-size: 32px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--gray-color);
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.video-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.video-thumbnail {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.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(255,107,157,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

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

.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: 5px;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.video-info {
    padding: 15px;
}

.video-title {
    font-size: 16px;
    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;
    font-size: 13px;
    color: var(--gray-color);
}

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

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

/* 专家展示 */
.experts-section {
    background: white;
    padding: 60px 0;
}

.experts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.expert-card {
    text-align: center;
    padding: 30px;
    border-radius: 12px;
    background: var(--light-color);
    transition: all 0.3s ease;
}

.expert-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

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

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

.expert-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 5px;
}

.expert-title {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.expert-desc {
    font-size: 14px;
    color: var(--gray-color);
    margin-bottom: 15px;
}

.expert-btn {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 20px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.expert-btn:hover {
    transform: scale(1.05);
    color: white;
}

/* 用户评价 */
.reviews-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #FFF5F7, #FFF0F3);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.review-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

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

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: bold;
}

.review-user {
    flex: 1;
}

.review-name {
    font-weight: 600;
    margin-bottom: 3px;
}

.review-stars {
    color: #FFD700;
    font-size: 14px;
}

.review-content {
    font-size: 14px;
    color: var(--gray-color);
    line-height: 1.8;
}

/* 合作品牌 */
.partners-section {
    padding: 60px 0;
    background: white;
}

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

.partner-logo {
    width: 150px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all 0.3s ease;
}

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

/* FAQ */
.faq-section {
    padding: 60px 0;
}

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

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

.faq-question {
    padding: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--light-color);
}

.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: 200px;
}

/* 联系我们 */
.contact-section {
    padding: 60px 0;
    background: var(--dark-color);
    color: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.contact-item h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contact-item p {
    font-size: 14px;
    margin-bottom: 8px;
    opacity: 0.8;
}

.qrcode-box {
    width: 120px;
    height: 120px;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.qrcode-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    padding: 30px 0;
    text-align: center;
}

.footer-content {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
}

.footer-logo {
    margin-bottom: 15px;
}

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

.footer-links {
    margin: 15px 0;
}

.footer-links a {
    color: rgba(255,255,255,0.6);
    margin: 0 15px;
    transition: color 0.3s ease;
}

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

.social-share {
    margin: 20px 0;
}

.social-share a {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    margin: 0 5px;
    color: white;
    transition: all 0.3s ease;
}

.social-share a:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

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

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--gray-color);
}

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

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

.breadcrumb-list span {
    color: var(--text-color);
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 60px 0;
    text-align: center;
    color: white;
}

.page-title {
    font-size: 36px;
    margin-bottom: 10px;
}

.page-desc {
    font-size: 16px;
    opacity: 0.9;
}

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

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .search-input {
        width: 100%;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .banner {
        height: 300px;
    }
    
    .banner-title {
        font-size: 24px;
    }
    
    .video-grid,
    .experts-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .section-title {
        font-size: 24px;
    }
}

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

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* 懒加载占位 */
.lazy-load {
    background: #f0f0f0;
    background-image: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}