/* 糖心vlog - 主样式表 */
/* 品牌色彩: 粉色渐变 #FF6B9D to #FF8E53 */

/* ===== 基础重置 ===== */
* {
    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: #333;
    background-color: #fff;
}

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

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

ul, ol {
    list-style: none;
}

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

/* ===== 头部导航 ===== */
.header {
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
    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;
    padding: 15px 0;
}

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

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

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

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    color: #fff;
    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);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
}

/* ===== 搜索栏 ===== */
.search-bar {
    background: #f8f8f8;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

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

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #FF6B9D;
    border-right: none;
    border-radius: 25px 0 0 25px;
    font-size: 16px;
    outline: none;
}

.search-input:focus {
    border-color: #FF8E53;
}

.search-btn {
    padding: 12px 30px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
    color: #fff;
    border: none;
    border-radius: 0 25px 25px 0;
    font-size: 16px;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.search-btn:hover {
    opacity: 0.9;
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
    padding: 15px 0;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #FF6B9D;
}

.breadcrumb span {
    margin: 0 8px;
    color: #999;
}

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

.banner-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

.banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.banner-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.banner-content p {
    font-size: 20px;
    margin-bottom: 30px;
}

.banner-btn {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
    color: #fff;
    border-radius: 30px;
    font-size: 18px;
    font-weight: bold;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.banner-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255,107,157,0.3);
}

/* ===== 区块标题 ===== */
.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
}

.section-title p {
    color: #666;
    font-size: 16px;
    margin-top: 15px;
}

/* ===== 视频卡片 ===== */
.video-section {
    padding: 60px 0;
    background: #f9f9f9;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.video-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.video-thumb {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card:hover .video-thumb 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: opacity 0.3s ease;
}

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

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid #fff;
    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: #fff;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    font-size: 16px;
    color: #333;
    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;
    align-items: center;
    font-size: 13px;
    color: #999;
}

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

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

/* ===== 创作者展示 ===== */
.creator-section {
    padding: 60px 0;
}

.creator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
}

.creator-card {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

.creator-card:hover {
    transform: translateY(-5px);
}

.creator-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 15px;
    border: 3px solid #FF6B9D;
}

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

.creator-card h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 5px;
}

.creator-card p {
    font-size: 14px;
    color: #666;
}

.creator-tags {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 5px;
}

.creator-tags span {
    font-size: 12px;
    padding: 3px 10px;
    background: #fff0f5;
    color: #FF6B9D;
    border-radius: 15px;
}

/* ===== 专家团队 ===== */
.expert-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #fff5f8 0%, #fff9f0 100%);
}

.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.expert-card {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
}

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

.expert-info h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 5px;
}

.expert-title {
    font-size: 14px;
    color: #FF6B9D;
    margin-bottom: 10px;
}

.expert-info p {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
}

.expert-btns {
    margin-top: 15px;
    display: flex;
    gap: 10px;
}

.expert-btn {
    padding: 8px 15px;
    font-size: 13px;
    border-radius: 20px;
    border: 1px solid #FF6B9D;
    color: #FF6B9D;
    transition: all 0.3s ease;
}

.expert-btn:hover {
    background: #FF6B9D;
    color: #fff;
}

/* ===== 功能模块 ===== */
.feature-section {
    padding: 60px 0;
}

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

.feature-card {
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: #fff;
}

.feature-card h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* ===== 用户评价 ===== */
.review-section {
    padding: 60px 0;
    background: #f9f9f9;
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.review-card {
    padding: 25px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

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

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

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

.review-user h5 {
    font-size: 16px;
    color: #333;
}

.review-user span {
    font-size: 13px;
    color: #999;
}

.review-stars {
    color: #FFD700;
    font-size: 14px;
    margin-bottom: 10px;
}

.review-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* ===== 合作品牌 ===== */
.partner-section {
    padding: 60px 0;
}

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

.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;
}

.partner-logo img {
    max-width: 100%;
    max-height: 100%;
}

/* ===== FAQ ===== */
.faq-section {
    padding: 60px 0;
    background: #f9f9f9;
}

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

.faq-item {
    background: #fff;
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    padding: 20px 25px;
    font-size: 16px;
    font-weight: 500;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #fff5f8;
}

.faq-question::after {
    content: '+';
    font-size: 24px;
    color: #FF6B9D;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 25px 20px;
    max-height: 500px;
}

.faq-answer p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* ===== 联系我们 ===== */
.contact-section {
    padding: 60px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.contact-card {
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    text-align: center;
}

.contact-card h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
}

.contact-card p {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
}

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

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

/* ===== 社交分享 ===== */
.share-section {
    padding: 40px 0;
    background: linear-gradient(135deg, #fff5f8 0%, #fff9f0 100%);
    text-align: center;
}

.share-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.share-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    transition: transform 0.3s ease;
}

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

.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.douyin { background: #000; }
.share-btn.bilibili { background: #FB7299; }

/* ===== 页脚 ===== */
.footer {
    background: #2a2a2a;
    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: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #FF6B9D;
}

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

.footer-col ul li a {
    color: #aaa;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: #FF6B9D;
}

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

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

.footer-logo span {
    font-size: 20px;
    font-weight: bold;
}

.footer-desc {
    font-size: 14px;
    color: #aaa;
    line-height: 1.8;
}

.footer-qr {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.footer-qr-item {
    text-align: center;
}

.footer-qr-item img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
}

.footer-qr-item p {
    font-size: 12px;
    color: #aaa;
    margin-top: 5px;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
    font-size: 14px;
    color: #888;
}

.footer-bottom a {
    color: #FF6B9D;
}

.update-time {
    margin-top: 10px;
    font-size: 13px;
    color: #666;
}

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
        flex-direction: column;
        padding: 20px;
        gap: 10px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .banner {
        height: 350px;
    }
    
    .banner-content h1 {
        font-size: 32px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
    
    .expert-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        padding: 10px 0;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .banner {
        height: 280px;
    }
    
    .banner-content h1 {
        font-size: 24px;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .video-grid,
    .creator-grid,
    .feature-grid,
    .review-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-qr {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .banner {
        height: 220px;
    }
    
    .banner-content h1 {
        font-size: 20px;
    }
    
    .banner-btn {
        padding: 10px 25px;
        font-size: 14px;
    }
    
    .section-title h2 {
        font-size: 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 懒加载动画 ===== */
.lazy-load {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* ===== 加载动画 ===== */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #FF6B9D;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== 内页样式 ===== */
.page-header {
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
    padding: 60px 0;
    text-align: center;
    color: #fff;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

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

.page-content {
    padding: 60px 0;
}

/* ===== 工具卡片 ===== */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.tool-card {
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
}

.tool-card h4 {
    font-size: 20px;
    color: #333;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tool-card h4 span {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

.tool-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.tool-btn {
    display: inline-block;
    padding: 10px 25px;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
    color: #fff;
    border-radius: 25px;
    font-size: 14px;
    transition: opacity 0.3s ease;
}

.tool-btn:hover {
    opacity: 0.9;
}

/* ===== 社区帖子 ===== */
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.post-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.post-image {
    position: relative;
    padding-top: 60%;
    overflow: hidden;
}

.post-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-content {
    padding: 20px;
}

.post-content h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.post-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #999;
}

.post-author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.post-author img {
    width: 30px;
    height: 30px;
    border-radius: 50%;
}

/* ===== 统计数据 ===== */
.stats-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8E53 100%);
    color: #fff;
}

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

.stat-item h3 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 16px;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-item h3 {
        font-size: 32px;
    }
}


/* ===== 合作品牌 ===== */
.partner-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #fff5f8 0%, #fff9f0 100%);
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.partner-logo {
    background: #fff;
    padding: 25px 15px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.06);
    transition: transform 0.3s ease;
    min-height: 80px;
}

.partner-logo:hover {
    transform: translateY(-3px);
}

/* ===== 响应式合作品牌 ===== */
@media (max-width: 1024px) {
    .partner-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .partner-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .partner-grid {
        grid-template-columns: 1fr;
    }
}