/* 91植物视频社区 - 全站样式 */
*{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;line-height:1.8;background:#f9faf8}
a{color:#2a7a4b;text-decoration:none;transition:color .3s}
a:hover{color:#1a5a35}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 头部导航 */
.site-header{background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.logo-area{display:flex;align-items:center;gap:10px}
.logo-area img{height:48px;width:auto}
.logo-area h1{font-size:22px;color:#2a7a4b;font-weight:700}
.logo-area h1 span{color:#1a8a5a}
.main-nav{display:flex;gap:0}
.main-nav a{padding:10px 16px;font-size:15px;color:#444;font-weight:500;border-radius:6px;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:#e8f5e9;color:#2a7a4b}
.mobile-menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:#2a7a4b}

/* 搜索框 */
.search-bar{background:#e8f5e9;padding:12px 0;border-bottom:1px solid #d0e8d4}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 18px;border:2px solid #2a7a4b;border-right:none;border-radius:25px 0 0 25px;font-size:15px;outline:none;background:#fff}
.search-box input:focus{border-color:#1a5a35;box-shadow:0 0 8px rgba(42,122,75,.2)}
.search-box button{padding:10px 24px;background:#2a7a4b;color:#fff;border:2px solid #2a7a4b;border-radius:0 25px 25px 0;cursor:pointer;font-size:15px;transition:background .3s}
.search-box button:hover{background:#1a5a35}

/* Banner */
.hero-banner{position:relative;height:500px;overflow:hidden;background:#1a3a25}
.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,.2),rgba(0,0,0,.5));display:flex;align-items:center;justify-content:center;text-align:center;padding:20px}
.hero-content{color:#fff;max-width:800px}
.hero-content h2{font-size:42px;margin-bottom:16px;text-shadow:2px 2px 8px rgba(0,0,0,.5);line-height:1.3}
.hero-content p{font-size:18px;margin-bottom:24px;text-shadow:1px 1px 4px rgba(0,0,0,.4);line-height:1.6}
.hero-content .btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 32px;border-radius:30px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;border:none}
.btn-primary{background:#2a7a4b;color:#fff}
.btn-primary:hover{background:#1a5a35;transform:translateY(-2px);box-shadow:0 4px 12px rgba(42,122,75,.4);color:#fff}
.btn-outline{background:transparent;color:#fff;border:2px solid #fff}
.btn-outline:hover{background:#fff;color:#2a7a4b}

/* 区块通用 */
.section{padding:60px 0}
.section-alt{background:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:32px;color:#1a3a25;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:#2a7a4b;margin:10px auto 0}
.section-title p{color:#666;font-size:16px;margin-top:8px}
.section-title h3{font-size:20px;color:#2a7a4b;margin-top:6px}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 8px 24px rgba(0,0,0,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#e0e0e0}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:64px;height:64px;background:rgba(42,122,75,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer}
.play-btn::after{content:'';border-style:solid;border-width:12px 0 12px 22px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-card:hover .play-btn{opacity:1}
.video-info{padding:16px}
.video-info h3{font-size:17px;color:#1a3a25;margin-bottom:8px;line-height:1.4}
.video-info p{font-size:14px;color:#666;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:16px;font-size:13px;color:#999}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:2px 10px;background:#e8f5e9;color:#2a7a4b;border-radius:12px;font-size:12px;margin-right: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(280px,1fr));gap:24px}
.module-card{background:#fff;border-radius:12px;padding:30px 24px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .3s;border:1px solid #eef5f0}
.module-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(42,122,75,.12);border-color:#2a7a4b}
.module-icon{width:64px;height:64px;background:linear-gradient(135deg,#2a7a4b,#4caf50);border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:28px;color:#fff}
.module-card h3{font-size:18px;color:#1a3a25;margin-bottom:10px}
.module-card p{font-size:14px;color:#666;line-height:1.7}

/* 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;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.08);text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-avatar{width:100%;height:200px;object-fit:cover}
.expert-info{padding:20px}
.expert-info h4{font-size:18px;color:#1a3a25;margin-bottom:6px}
.expert-info .title{color:#2a7a4b;font-size:14px;margin-bottom:10px}
.expert-info p{font-size:13px;color:#666;line-height:1.6;margin-bottom:12px}
.expert-links{display:flex;gap:10px;justify-content:center}
.expert-links a{padding:6px 16px;border:1px solid #2a7a4b;color:#2a7a4b;border-radius:20px;font-size:13px;transition:all .3s}
.expert-links a:hover{background:#2a7a4b;color:#fff}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.05);overflow:hidden}
.faq-question{padding:18px 24px;font-size:16px;font-weight:600;color:#1a3a25;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-question:hover{background:#f0f8f2}
.faq-question::after{content:'+';font-size:22px;color:#2a7a4b;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;font-size:14px;color:#555;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(300px,1fr));gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 16px rgba(0,0,0,.06);border-left:4px solid #2a7a4b}
.review-card .stars{color:#f5a623;font-size:16px;margin-bottom:10px}
.review-card .content{font-size:14px;color:#555;line-height:1.7;margin-bottom:12px;font-style:italic}
.review-card .author{font-size:13px;color:#999;display:flex;align-items:center;gap:8px}
.review-card .author strong{color:#333}

/* 合作品牌 */
.brand-wall{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;align-items:center}
.brand-item{background:#fff;padding:20px 30px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.06);font-size:18px;font-weight:700;color:#2a7a4b;transition:transform .3s}
.brand-item:hover{transform:scale(1.05)}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.contact-card{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 16px rgba(0,0,0,.06);text-align:center}
.contact-card h4{font-size:18px;color:#1a3a25;margin-bottom:12px}
.contact-card p{font-size:14px;color:#666;line-height:1.8}
.contact-card img{max-width:160px;margin:12px auto}

/* 社交分享 */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:25px;font-size:14px;color:#fff;transition:all .3s;cursor:pointer}
.share-btn:hover{transform:translateY(-2px);opacity:.9;color:#fff}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#00a1d6}

/* 页脚 */
.site-footer{background:#1a3a25;color:#ccc;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;font-size:17px;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:40px;height:2px;background:#4caf50}
.footer-col p,.footer-col a{font-size:14px;color:#aaa;line-height:2}
.footer-col a:hover{color:#4caf50}
.footer-col img{max-width:120px;border-radius:8px;margin-top:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:13px;color:#888}
.footer-bottom a{color:#4caf50}

/* 面包屑 */
.breadcrumb{padding:12px 0;font-size:14px;color:#999}
.breadcrumb a{color:#2a7a4b}
.breadcrumb span{margin:0 8px;color:#ccc}

/* How-To指南 */
.howto-steps{max-width:800px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:24px;align-items:flex-start}
.step-num{width:48px;height:48px;background:#2a7a4b;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;flex-shrink:0}
.step-content h4{font-size:17px;color:#1a3a25;margin-bottom:6px}
.step-content p{font-size:14px;color:#666;line-height:1.7}

/* 内页通用 */
.page-hero{height:300px;position:relative;overflow:hidden;background:#1a3a25}
.page-hero img{width:100%;height:100%;object-fit:cover;opacity:.7}
.page-hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center}
.page-hero-overlay h2{color:#fff;font-size:36px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.page-content{padding:40px 0}
.page-content h2{font-size:28px;color:#1a3a25;margin-bottom:20px}
.page-content h3{font-size:22px;color:#2a7a4b;margin:24px 0 12px}
.page-content p{font-size:15px;color:#555;line-height:1.9;margin-bottom:16px}

/* MCP前端代码区域 */
.mcp-widget{background:#f5f5f5;border-radius:10px;padding:20px;margin:20px 0;border:1px dashed #ccc;text-align:center;font-size:14px;color:#999}

/* 干扰标签隐藏 */
.noise-wrap{position:absolute;overflow:hidden;clip:rect(0,0,0,0);width:1px;height:1px;margin:-1px;padding:0;border:0}

/* 视频播放器覆盖层 */
.video-player-overlay{animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* 回到顶部按钮 */
#back-to-top:hover{background:#1a5a35;transform:translateY(-2px)}

/* EEAT页脚信息 */
.footer-info{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;margin-top:20px;text-align:center;font-size:12px;color:#777;line-height:2}
.footer-info p{margin:0;padding:0}

/* 响应式 */
@media(max-width:768px){
.header-inner{flex-wrap:wrap}
.main-nav{display:none;flex-direction:column;width:100%;padding:10px 0}
.main-nav.active{display:flex}
.mobile-menu-btn{display:block}
.hero-banner{height:350px}
.hero-content h2{font-size:26px}
.hero-content p{font-size:15px}
.video-grid{grid-template-columns:1fr}
.module-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr 1fr}
.review-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.section{padding:40px 0}
.section-title h2{font-size:24px}
.section-title h3{font-size:16px}
[style*='grid-template-columns:1fr 1fr']{grid-template-columns:1fr!important}
#back-to-top{bottom:16px;right:16px;width:38px;height:38px;font-size:16px}
}
@media(max-width:480px){
.expert-grid{grid-template-columns:1fr}
.hero-banner{height:280px}
.hero-content h2{font-size:22px}
.search-box{flex-direction:column}
.search-box input{border-radius:25px;border-right:2px solid #2a7a4b;margin-bottom:8px}
.search-box button{border-radius:25px}
}