/* 四虎视频 - 植物视频社区 全站样式表 */
/* kgffxii.cn */

/* === 重置与基础 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:#333;background:#f8faf5;line-height:1.8}
a{color:#2e7d32;text-decoration:none;transition:color .3s}
a:hover{color:#1b5e20}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;color:#1a3a1a;line-height:1.4}

/* === 容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px;font-size:28px}
.section-subtitle{text-align:center;color:#666;margin-bottom:30px;font-size:16px}

/* === 头部导航 === */
.site-header{background:#1a3a1a;color:#fff;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.2)}
.header-top{display:flex;align-items:center;justify-content:space-between;padding:10px 0}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{width:45px;height:45px;border-radius:8px}
.logo-wrap .brand-name{font-size:24px;font-weight:700;color:#4caf50}
.logo-wrap .brand-name span{color:#fff}

/* 导航菜单 */
.main-nav{background:#2e7d32}
.main-nav ul{display:flex;justify-content:center;flex-wrap:wrap;gap:0}
.main-nav li{position:relative}
.main-nav a{display:block;padding:12px 22px;color:#fff;font-size:15px;transition:background .3s}
.main-nav a:hover,.main-nav a.active{background:#1b5e20;color:#a5d6a7}

/* 搜索框 */
.search-bar{background:#f1f8e9;padding:12px 0;border-bottom:1px solid #c8e6c9}
.search-bar form{display:flex;max-width:600px;margin:0 auto;gap:0}
.search-bar input{flex:1;padding:10px 16px;border:2px solid #4caf50;border-right:none;border-radius:25px 0 0 25px;font-size:14px;outline:none}
.search-bar input:focus{border-color:#2e7d32}
.search-bar button{padding:10px 24px;background:#4caf50;color:#fff;border:2px solid #4caf50;border-radius:0 25px 25px 0;cursor:pointer;font-size:14px;transition:background .3s}
.search-bar button:hover{background:#388e3c}

/* === Banner === */
.hero-banner{position:relative;height:500px;overflow:hidden;background:#1a3a1a}
.hero-banner img{width:100%;height:100%;object-fit:cover;opacity:.85}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(to bottom,rgba(0,0,0,.3),rgba(0,0,0,.6));display:flex;align-items:center;justify-content:center}
.hero-content{text-align:center;color:#fff;max-width:800px;padding:0 20px}
.hero-content h1{font-size:42px;margin-bottom:16px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.hero-content h2{font-size:22px;margin-bottom:12px;font-weight:400;color:#a5d6a7}
.hero-content p{font-size:16px;margin-bottom:24px;color:#c8e6c9}
.hero-btn{display:inline-block;padding:14px 36px;background:#4caf50;color:#fff;border-radius:30px;font-size:16px;font-weight:600;transition:all .3s;box-shadow:0 4px 15px rgba(76,175,80,.4)}
.hero-btn:hover{background:#388e3c;transform:translateY(-2px);color:#fff}

/* === 面包屑 === */
.breadcrumb{padding:12px 0;font-size:13px;color:#666}
.breadcrumb a{color:#2e7d32}
.breadcrumb span{margin:0 6px;color:#999}

/* === 视频卡片 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(0,0,0,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#e8f5e9}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .3s}
.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(76,175,80,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn::after{content:"";display:block;width:0;height:0;border-style:solid;border-width:12px 0 12px 20px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-info{padding:16px}
.video-info h3{font-size:16px;margin-bottom:8px;color:#1a3a1a;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:16px;font-size:12px;color:#888;margin-top:8px}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:2px 8px;background:#e8f5e9;color:#2e7d32;border-radius:4px;font-size:12px;margin-right:6px;margin-top:6px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:12px}

/* === 模块卡片 === */
.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:30px}
.module-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.08);transition:transform .3s}
.module-card:hover{transform:translateY(-3px)}
.module-card img{width:100%;height:200px;object-fit:cover}
.module-card-body{padding:20px}
.module-card-body h3{font-size:20px;margin-bottom:10px;color:#1a3a1a}
.module-card-body p{color:#555;font-size:14px;line-height:1.8}
.module-card-body .btn-more{display:inline-block;margin-top:12px;padding:8px 20px;background:#4caf50;color:#fff;border-radius:20px;font-size:13px;transition:background .3s}
.module-card-body .btn-more:hover{background:#388e3c;color:#fff}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:8px;margin-bottom:12px;box-shadow:0 1px 6px rgba(0,0,0,.06);overflow:hidden}
.faq-question{padding:18px 24px;font-size:16px;font-weight:600;color:#1a3a1a;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-question:hover{background:#f1f8e9}
.faq-question::after{content:"+";font-size:22px;color:#4caf50;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all .3s;color:#555;font-size:14px;line-height:1.8}
.faq-item.active .faq-answer{padding:0 24px 18px;max-height:500px}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.review-card .stars{color:#ff9800;font-size:18px;margin-bottom:10px}
.review-card .review-text{color:#555;font-size:14px;line-height:1.8;margin-bottom:12px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.reviewer-avatar{width:40px;height:40px;border-radius:50%;background:#e8f5e9;display:flex;align-items:center;justify-content:center;color:#4caf50;font-weight:700;font-size:16px}
.reviewer-info .name{font-weight:600;font-size:14px;color:#1a3a1a}
.reviewer-info .date{font-size:12px;color:#999}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:12px;padding:24px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:transform .3s}
.expert-card:hover{transform:translateY(-3px)}
.expert-avatar{width:80px;height:80px;border-radius:50%;background:#e8f5e9;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:32px;color:#4caf50}
.expert-card h4{font-size:18px;color:#1a3a1a;margin-bottom:6px}
.expert-card .role{color:#4caf50;font-size:13px;margin-bottom:10px}
.expert-card p{font-size:13px;color:#666;line-height:1.6}
.expert-card .btn-contact{display:inline-block;margin-top:12px;padding:6px 16px;border:1px solid #4caf50;color:#4caf50;border-radius:20px;font-size:12px;transition:all .3s}
.expert-card .btn-contact:hover{background:#4caf50;color:#fff}

/* === 合作品牌 === */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center;padding:30px 0}
.brand-wall .brand-item{width:120px;height:60px;background:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 6px rgba(0,0,0,.06);padding:10px;color:#666;font-size:14px;font-weight:600}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:30px}
.contact-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.contact-card h4{font-size:18px;color:#1a3a1a;margin-bottom:12px;padding-bottom:10px;border-bottom:2px solid #e8f5e9}
.contact-card p{font-size:14px;color:#555;margin-bottom:8px}
.contact-card .highlight{color:#4caf50;font-weight:600}

/* === 社交分享 === */
.share-bar{display:flex;justify-content:center;gap:16px;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:20px;color:#fff;font-size:13px;transition:opacity .3s;cursor:pointer}
.share-btn:hover{opacity:.85;color:#fff}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00a1d6}

/* === 页脚 === */
.site-footer{background:#1a3a1a;color:#c8e6c9;padding:40px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:30px;padding-bottom:30px}
.footer-col h4{color:#4caf50;font-size:16px;margin-bottom:16px}
.footer-col p,.footer-col a{font-size:13px;color:#a5d6a7;line-height:2}
.footer-col a:hover{color:#fff}
.footer-qr{display:flex;gap:20px;margin-top:12px}
.footer-qr img{width:100px;height:100px;border-radius:8px;border:2px solid #2e7d32}
.footer-bottom{border-top:1px solid #2e7d32;padding:16px 0;text-align:center;font-size:13px;color:#81c784}
.footer-bottom a{color:#a5d6a7}

/* === MCP服务前端代码区 === */
.mcp-widget{background:#0d2b0d;border-radius:8px;padding:16px;margin-top:20px;font-family:monospace;font-size:12px;color:#4caf50;border:1px solid #2e7d32}
.mcp-widget .mcp-header{font-size:14px;color:#81c784;margin-bottom:8px}
.mcp-widget .mcp-status{display:flex;align-items:center;gap:6px}
.mcp-widget .mcp-dot{width:8px;height:8px;border-radius:50%;background:#4caf50;animation:mcp-pulse 2s infinite}
@keyframes mcp-pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* === 干扰标签隐藏 === */
.noise-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}

/* === 响应式 === */
@media(max-width:768px){
  .hero-banner{height:300px}
  .hero-content h1{font-size:26px}
  .hero-content h2{font-size:16px}
  .main-nav ul{flex-direction:column}
  .main-nav a{padding:10px 16px;border-bottom:1px solid rgba(255,255,255,.1)}
  .header-top{flex-direction:column;gap:8px}
  .video-grid{grid-template-columns:1fr}
  .module-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:30px 0}
  .section-title{font-size:22px}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .mobile-menu-btn{display:block}
}
@media(max-width:480px){
  .expert-grid{grid-template-columns:1fr}
  .search-bar form{flex-direction:column;padding:0 16px}
  .search-bar input{border-radius:25px;border-right:2px solid #4caf50}
  .search-bar button{border-radius:25px;margin-top:8px}
}

/* === 懒加载占位 === */
.lazy-load{opacity:0;transition:opacity .5s}
.lazy-load.loaded{opacity:1}

/* === 标签云 === */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:20px 0}
.tag-cloud a{display:inline-block;padding:4px 14px;background:#e8f5e9;color:#2e7d32;border-radius:20px;font-size:13px;transition:all .3s}
.tag-cloud a:hover{background:#4caf50;color:#fff}

/* === How-To指南 === */
.howto-steps{max-width:700px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:24px;align-items:flex-start}
.step-number{width:40px;height:40px;background:#4caf50;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex-shrink:0}
.step-content h4{font-size:16px;color:#1a3a1a;margin-bottom:6px}
.step-content p{font-size:14px;color:#555}

/* === 动画 === */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .6s ease forwards}

/* === 移动端汉堡菜单 === */
.mobile-menu-btn{display:none;background:none;border:2px solid #4caf50;color:#4caf50;font-size:24px;padding:4px 10px;border-radius:6px;cursor:pointer;line-height:1}
.mobile-menu-btn:hover{background:#4caf50;color:#fff}
@media(max-width:768px){
  .main-nav{display:none}
  .main-nav.nav-open{display:block}
  .header-top{position:relative}
}

/* === 作者信息框 === */
.author-box{display:flex;gap:20px;padding:24px;background:#fff;border-radius:12px;border:1px solid #c8e6c9;align-items:flex-start}
.author-avatar{flex-shrink:0}
.author-avatar img{border-radius:50%;border:2px solid #4caf50}
.author-info h5{font-size:18px;color:#1a3a1a;margin-bottom:8px}
.author-info p{font-size:13px;color:#666;margin-bottom:6px;line-height:1.6}
.author-info a{color:#2e7d32;font-size:13px}
@media(max-width:768px){
  .author-box{flex-direction:column;align-items:center;text-align:center}
}

/* === EEAT信任块 === */
.eeat-trust-block{max-width:900px;margin:0 auto;padding:30px 0}
.eeat-trust-block h3{font-size:20px;color:#1a3a1a;margin:24px 0 12px;border-left:4px solid #4caf50;padding-left:12px}
.eeat-trust-block p{font-size:15px;color:#555;margin-bottom:12px;line-height:1.8}
.eeat-trust-block ul{margin:12px 0 12px 20px}
.eeat-trust-block li{font-size:14px;color:#555;margin-bottom:6px;list-style:disc}

/* === 锚点导航 === */
.anchor-nav{background:#fff;border-bottom:1px solid #e8f5e9}
.anchor-nav a{transition:all .3s}
.anchor-nav a:hover{background:#4caf50;color:#fff}

/* === 干扰标签隐藏 === */
.noise-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}