/* 国产自拍 - 主样式表 */
/* 品牌色彩系统 */
:root {
    --primary-color: #FF6B8A;
    --primary-dark: #E85A7A;
    --primary-light: #FFB3C1;
    --secondary-color: #FF9A8B;
    --accent-color: #FF6A88;
    --gradient-primary: linear-gradient(135deg, #FF6B8A 0%, #FF9A8B 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-dark: #1a1a2e;
    --border-color: #E5E5E5;
    --shadow-light: 0 2px 10px rgba(0,0,0,0.08);
    --shadow-medium: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-heavy: 0 8px 30px rgba(0,0,0,0.15);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 全局重置 */
* {
    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", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

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

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

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

ul, ol {
    list-style: none;
}

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

.container-fluid {
    width: 100%;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
}

.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(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-menu a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    padding: 5px 0;
}

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

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

/* 搜索框 */
.search-box {
    background: var(--bg-secondary);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    margin-top: 70px;
}

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

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

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

.search-btn {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--gradient-primary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

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

.search-btn svg {
    width: 18px;
    height: 18px;
    fill: white;
}

/* Banner轮播 */
.banner-section {
    position: relative;
    overflow: hidden;
}

.banner-slider {
    display: flex;
    transition: transform var(--transition-slow);
}

.banner-slide {
    min-width: 100%;
    position: relative;
    height: 500px;
}

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

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 100%);
    display: flex;
    align-items: center;
    padding: 0 50px;
}

.banner-content {
    max-width: 600px;
    color: white;
}

.banner-content h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.banner-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.banner-btn {
    display: inline-block;
    padding: 14px 35px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 30px;
    font-weight: 600;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.banner-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255,107,138,0.4);
    color: white;
}

.banner-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.banner-dot.active {
    background: white;
    transform: scale(1.2);
}

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

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

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-tag {
    display: inline-block;
    padding: 5px 15px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 15px;
}

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

.video-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

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

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.video-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: opacity var(--transition-normal), transform var(--transition-normal);
}

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

.video-play-btn svg {
    width: 24px;
    height: 24px;
    fill: white;
    margin-left: 3px;
}

.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: 0.8rem;
}

.video-info {
    padding: 15px;
}

.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: 15px;
    font-size: 0.85rem;
    color: var(--text-light);
}

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

.video-meta svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* 分类标签 */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 10px 25px;
    background: var(--bg-secondary);
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-tab:hover,
.category-tab.active {
    background: var(--gradient-primary);
    color: white;
}

/* 专家展示 */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.expert-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

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

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

.expert-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.expert-title {
    font-size: 0.9rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.expert-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

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

.expert-btn {
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.expert-btn.primary {
    background: var(--gradient-primary);
    color: white;
}

.expert-btn.secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.expert-btn:hover {
    transform: translateY(-2px);
}

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

.feature-card {
    background: white;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    fill: white;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
}

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

/* 用户评价 */
.testimonial-section {
    background: var(--bg-secondary);
}

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

.testimonial-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow-light);
}

.testimonial-content {
    font-size: 1rem;
    color: var(--text-secondary);
    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-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.testimonial-info p {
    font-size: 0.85rem;
    color: var(--text-light);
}

.testimonial-rating {
    display: flex;
    gap: 3px;
    margin-top: 5px;
}

.testimonial-rating svg {
    width: 14px;
    height: 14px;
    fill: #FFD700;
}

/* 合作品牌 */
.partner-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
    flex-wrap: wrap;
    padding: 30px 0;
}

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

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

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

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

.faq-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 15px;
    box-shadow: var(--shadow-light);
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    fill: var(--text-light);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.faq-answer p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

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

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

.contact-card {
    text-align: center;
    padding: 30px;
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--primary-light);
}

.contact-card p {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 10px;
}

.contact-qr {
    width: 150px;
    height: 150px;
    margin: 20px auto;
    background: white;
    border-radius: 10px;
    padding: 10px;
}

.contact-qr img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 5px;
}

/* 页脚 */
.footer {
    background: #111;
    color: rgba(255,255,255,0.7);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

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

.footer-brand p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

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

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

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

.footer-social svg {
    width: 18px;
    height: 18px;
    fill: white;
}

.footer-links h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 20px;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.7);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    font-size: 0.9rem;
}

.footer-bottom .update-time {
    color: var(--primary-light);
}

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

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

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

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

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

.breadcrumb-list .current {
    color: var(--primary-color);
    font-weight: 500;
}

/* 内页样式 */
.page-header {
    background: var(--gradient-primary);
    padding: 80px 0;
    text-align: center;
    color: white;
    margin-top: 70px;
}

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

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .expert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-menu {
        display: none;
    }
    
    .banner-slide {
        height: 400px;
    }
    
    .banner-content h1 {
        font-size: 2rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 50px 0;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .banner-slide {
        height: 350px;
    }
    
    .banner-content h1 {
        font-size: 1.6rem;
    }
    
    .banner-content p {
        font-size: 1rem;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .expert-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

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

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

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

/* 懒加载占位 */
.lazy-load {
    background: 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;
    }
}

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

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-dark);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
    bottom: calc(100% + 10px);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255,107,138,0.4);
    color: white;
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border-color);
}

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

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

/* 加载更多 */
.load-more {
    text-align: center;
    margin-top: 40px;
}

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

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

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

.back-to-top svg {
    width: 20px;
    height: 20px;
    fill: white;
}

/* 动画效果 */
/* 默认显示，JS启用时添加动画 */
.fade-in {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

/* JS启用时的初始状态 */
.js-enabled .fade-in {
    opacity: 0;
    transform: translateY(30px);
}

/* JS启用时的可见状态 */
.js-enabled .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 统计数据 */
.stats-section {
    background: var(--gradient-primary);
    padding: 60px 0;
}

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

.stat-item h3 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

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

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

/* 内页内容区 */
.page-content {
    padding: 60px 0;
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.content-wrapper h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    margin-top: 40px;
}

.content-wrapper h2:first-child {
    margin-top: 0;
}

.content-wrapper p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.content-wrapper ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.content-wrapper ul li {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.content-wrapper ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* 工具卡片 */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.tool-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.tool-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-medium);
}

.tool-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.tool-card:hover .tool-icon {
    background: var(--gradient-primary);
}

.tool-icon svg {
    width: 32px;
    height: 32px;
    fill: var(--primary-color);
    transition: fill var(--transition-fast);
}

.tool-card:hover .tool-icon svg {
    fill: white;
}

.tool-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

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

@media (max-width: 992px) {
    .tool-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .tool-grid {
        grid-template-columns: 1fr;
    }
}

/* 社区帖子 */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.post-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
}

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

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

.post-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    overflow: hidden;
}

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

.post-author h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.post-author span {
    font-size: 0.85rem;
    color: var(--text-light);
}

.post-content {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
}

.post-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 15px;
}

.post-images img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 8px;
}

.post-footer {
    display: flex;
    align-items: center;
    gap: 25px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.post-action {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.post-action:hover {
    color: var(--primary-color);
}

.post-action svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}


/* 工具卡片 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tool-card {
    background: white;
    border-radius: 16px;
    padding: 35px;
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.tool-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.tool-icon svg {
    width: 35px;
    height: 35px;
    fill: white;
}

.tool-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.tool-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.tool-features span {
    padding: 5px 12px;
    background: var(--bg-secondary);
    border-radius: 15px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.tool-btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 25px;
    font-weight: 600;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.tool-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,107,138,0.3);
    color: white;
}

/* 社区帖子 */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.post-card {
    background: white;
    border-radius: 16px;
    padding: 25px;
    box-shadow: var(--shadow-light);
}

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

.post-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    overflow: hidden;
}

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

.post-author h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.post-author span {
    font-size: 0.85rem;
    color: var(--text-light);
}

.post-content {
    margin-bottom: 15px;
}

.post-content p {
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.7;
}

.post-images {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.post-images img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
}

.post-footer {
    display: flex;
    align-items: center;
    gap: 30px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.post-action {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.post-action:hover {
    color: var(--primary-color);
}

.post-action svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* 响应式 - 工具页面 */
@media (max-width: 992px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .post-images {
        flex-wrap: wrap;
    }
    
    .post-images img {
        width: calc(50% - 5px);
        height: 150px;
    }
}


/* 服务卡片 */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-icon svg {
    width: 30px;
    height: 30px;
    fill: white;
}

.service-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

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

.service-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.service-tags .tag {
    padding: 4px 12px;
    background: var(--bg-secondary);
    border-radius: 15px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 视频标签 */
.video-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.video-tag {
    padding: 3px 10px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* 美图展示 */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,107,138,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay span {
    color: white;
    font-weight: 600;
}

/* 荣誉资质 */
.honor-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 50px;
}

.honor-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow-light);
}

.honor-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

.honor-icon svg {
    width: 25px;
    height: 25px;
    fill: white;
}

.honor-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.honor-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 合作伙伴 */
.partner-section {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.partner-section h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 25px;
}

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

.partner-logo {
    padding: 15px 30px;
    background: var(--bg-secondary);
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* 专家认证徽章 */
.expert-cert {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.cert-badge {
    padding: 4px 12px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* 面包屑导航 */
.breadcrumb-section {
    background: var(--bg-secondary);
    padding: 15px 0;
    margin-top: 70px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 文章内容 */
.main-content {
    padding: 50px 0;
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.article-content h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.article-content .update-info {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.policy-section {
    margin-bottom: 40px;
}

.policy-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.policy-section h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 20px 0 10px;
}

.policy-section p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 15px;
}

.policy-section ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.policy-section ul li {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    position: relative;
    padding-left: 20px;
}

.policy-section ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* ICP备案信息 */
.icp-info {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 10px;
}

/* 响应式 - 新增模块 */
@media (max-width: 992px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .honor-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .service-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .honor-grid {
        grid-template-columns: 1fr;
    }
    
    .partner-logos {
        gap: 15px;
    }
    
    .partner-logo {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}


/* 话题卡片 */
.topic-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.topic-card {
    background: white;
    border-radius: 16px;
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.topic-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.topic-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.topic-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.topic-count {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* CTA区域 */
.cta-section {
    background: var(--gradient-primary);
    padding: 80px 0;
}

.cta-content {
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.cta-content .btn {
    background: white;
    color: var(--primary-color);
    padding: 15px 40px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    display: inline-block;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.cta-content .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    color: var(--primary-color);
}

/* 响应式 - 话题卡片 */
@media (max-width: 992px) {
    .topic-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .topic-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-content h2 {
        font-size: 1.5rem;
    }
}