/* ===== 黄色仓库 - 植物视频社区 全站样式表 ===== */
/* 网站: 7uw5otj8.cn */

/* --- Reset & Base --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#333;background:#f8f9fa;line-height:1.8;overflow-x:hidden}
a{text-decoration:none;color:#2e7d32;transition:color .3s}
a:hover{color:#1b5e20}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* --- Header & Navigation --- */
.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}
.site-logo img{height:50px;width:auto}
.site-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:#2e7d32}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{padding:10px 16px;font-size:15px;color:#555;font-weight:500;transition:all .3s;border-bottom:3px solid transparent}
.main-nav a:hover,.main-nav a.active{color:#2e7d32;border-bottom-color:#2e7d32}
.search-box{display:flex;align-items:center;margin-left:20px}
.search-box input{border:2px solid #e0e0e0;border-radius:20px 0 0 20px;padding:8px 16px;font-size:14px;outline:none;width:180px;transition:border-color .3s}
.search-box input:focus{border-color:#2e7d32}
.search-box button{background:#2e7d32;color:#fff;border:none;padding:8px 16px;border-radius:0 20px 20px 0;cursor:pointer;font-size:14px;transition:background .3s}
.search-box button:hover{background:#1b5e20}
.mobile-menu-btn{display:none;background:none;border:none;font-size:28px;cursor:pointer;color:#333}

/* --- Banner --- */
.hero-banner{position:relative;height:520px;background-size:cover;background-position:center;background-repeat:no-repeat;display:flex;align-items:center;justify-content:center}
.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,.25) 100%)}
.hero-content{position:relative;z-index:2;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);line-height:1.3}
.hero-content h2{font-size:20px;font-weight:400;margin-bottom:24px;text-shadow:1px 1px 4px rgba(0,0,0,.4);line-height:1.6}
.hero-content .btn-primary{display:inline-block;background:#2e7d32;color:#fff;padding:14px 36px;border-radius:30px;font-size:16px;font-weight:600;transition:all .3s;box-shadow:0 4px 15px rgba(46,125,50,.4)}
.hero-content .btn-primary:hover{background:#1b5e20;transform:translateY(-2px);box-shadow:0 6px 20px rgba(46,125,50,.5)}

/* --- Section Common --- */
.section{padding:60px 0}
.section-alt{background:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:32px;color:#1b5e20;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:#4caf50;margin:10px auto 0}
.section-title p{color:#666;font-size:16px;max-width:600px;margin:0 auto}

/* --- Breadcrumb --- */
.breadcrumb{padding:12px 0;font-size:14px;color:#888}
.breadcrumb a{color:#2e7d32}
.breadcrumb span{margin:0 6px;color:#ccc}

/* --- Video Card Grid --- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.08);transition:all .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 8px 30px rgba(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 .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(46,125,50,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;z-index:3}
.video-play-btn::after{content:'';width:0;height:0;border-style:solid;border-width:12px 0 12px 22px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-card:hover .video-play-btn{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:12px;z-index:3}
.video-info{padding:14px}
.video-info h3{font-size:15px;color:#333;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:#999}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;background:#e8f5e9;color:#2e7d32;padding:2px 8px;border-radius:10px;font-size:12px;margin-top:6px}

/* --- Short Video (TikTok Style) --- */
.short-video-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.short-video-card{position:relative;border-radius:12px;overflow:hidden;padding-top:177%;background:#000}
.short-video-card img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.short-video-card:hover img{transform:scale(1.05)}
.short-video-overlay{position:absolute;bottom:0;left:0;width:100%;padding:16px;background:linear-gradient(transparent,rgba(0,0,0,.8));color:#fff;z-index:2}
.short-video-overlay h4{font-size:14px;margin-bottom:4px}
.short-video-overlay p{font-size:12px;opacity:.8}
.short-video-card .video-play-btn{width:48px;height:48px}
.short-video-card:hover .video-play-btn{opacity:1}

/* --- AI Section --- */
.ai-features{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.ai-feature-card{background:#fff;border-radius:12px;padding:30px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .3s}
.ai-feature-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.ai-feature-icon{font-size:48px;margin-bottom:16px}
.ai-feature-card h3{font-size:20px;color:#1b5e20;margin-bottom:12px}
.ai-feature-card p{color:#666;font-size:14px;line-height:1.8}

/* --- Community Section --- */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.community-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .3s;border-left:4px solid #4caf50}
.community-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.community-card h3{font-size:18px;color:#1b5e20;margin-bottom:8px}
.community-card p{color:#666;font-size:14px}
.community-card .topic-count{color:#4caf50;font-size:13px;margin-top:8px}

/* --- Expert Section --- */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.06);text-align:center;transition:all .3s}
.expert-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:24px auto 12px;background:#e8f5e9;display:flex;align-items:center;justify-content:center;font-size:36px;color:#2e7d32;overflow:hidden}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h3{font-size:18px;color:#333;margin-bottom:4px}
.expert-card .expert-role{color:#4caf50;font-size:14px;margin-bottom:8px}
.expert-card p{color:#666;font-size:13px;padding:0 16px;line-height:1.6}
.expert-card .expert-awards{color:#ff9800;font-size:13px;padding:8px 16px}
.expert-links{display:flex;justify-content:center;gap:10px;padding:16px}
.expert-links a{display:inline-block;padding:6px 14px;border-radius:20px;font-size:13px;border:1px solid #4caf50;color:#4caf50;transition:all .3s}
.expert-links a:hover{background:#4caf50;color:#fff}

/* --- Partner Section --- */
.partner-logos{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center;padding:20px 0}
.partner-logos img{height:50px;opacity:.6;transition:opacity .3s;filter:grayscale(100%)}
.partner-logos img:hover{opacity:1;filter:grayscale(0)}
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.howto-step{text-align:center;padding:20px}
.howto-step .step-num{display:inline-flex;width:40px;height:40px;border-radius:50%;background:#2e7d32;color:#fff;align-items:center;justify-content:center;font-size:18px;font-weight:700;margin-bottom:12px}
.howto-step h4{font-size:16px;color:#333;margin-bottom:8px}
.howto-step p{font-size:14px;color:#666}

/* --- Reviews Section --- */
.reviews-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 16px rgba(0,0,0,.06)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:48px;height:48px;border-radius:50%;background:#e8f5e9;display:flex;align-items:center;justify-content:center;font-size:20px;color:#2e7d32}
.review-name{font-weight:600;color:#333}
.review-date{font-size:13px;color:#999}
.review-stars{color:#ff9800;font-size:14px;margin-bottom:8px}
.review-text{color:#555;font-size:14px;line-height:1.8}

/* --- FAQ Section --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.04);overflow:hidden}
.faq-question{padding:18px 24px;font-size:16px;font-weight:600;color:#333;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:24px;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 .4s ease;color:#666;font-size:14px;line-height:1.8}
.faq-item.active .faq-answer{padding:0 24px 18px;max-height:300px}

/* --- Contact Section --- */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-info-card{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 16px rgba(0,0,0,.06)}
.contact-info-card h3{font-size:20px;color:#1b5e20;margin-bottom:16px;border-bottom:2px solid #e8f5e9;padding-bottom:10px}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;font-size:14px;color:#555}
.contact-item strong{color:#333;min-width:80px}
.qrcode-grid{display:flex;gap:24px;justify-content:center;margin-top:20px}
.qrcode-item{text-align:center}
.qrcode-item img{width:150px;height:150px;border-radius:8px;margin-bottom:8px}
.qrcode-item p{font-size:13px;color:#666}

/* --- Social Share --- */
.social-share{display:flex;justify-content:center;gap:16px;padding:20px 0}
.social-share a{display:inline-flex;width:44px;height:44px;border-radius:50%;align-items:center;justify-content:center;color:#fff;font-size:18px;transition:all .3s}
.social-share a:hover{transform:translateY(-3px)}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#00a1d6}

/* --- Footer --- */
.site-footer{background:#1a1a2e;color:#ccc;padding:40px 0 20px}
.footer-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;max-width:1200px;margin:0 auto;padding:0 20px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;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 .footer-logo img{height:40px;margin-bottom:12px}
.footer-bottom{text-align:center;padding:20px 0 0;margin-top:30px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#888;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px}
.footer-update-time{color:#4caf50;font-size:13px}

/* --- MCP Embed --- */
.mcp-container{background:#f5f5f5;border-radius:8px;padding:20px;margin-top:20px;text-align:center;font-size:14px;color:#999;border:1px dashed #ddd}

/* --- Responsive --- */
@media(max-width:1024px){
.video-grid{grid-template-columns:repeat(3,1fr)}
.short-video-grid{grid-template-columns:repeat(3,1fr)}
.ai-features{grid-template-columns:repeat(2,1fr)}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.header-inner{flex-wrap:wrap}
.main-nav{display:none;width:100%;flex-direction:column;padding:10px 0}
.main-nav.active{display:flex}
.mobile-menu-btn{display:block}
.search-box{width:100%;margin:10px 0 0;order:3}
.search-box input{flex:1}
.hero-banner{height:380px}
.hero-content h1{font-size:28px}
.hero-content h2{font-size:16px}
.video-grid{grid-template-columns:repeat(2,1fr);gap:16px}
.short-video-grid{grid-template-columns:repeat(2,1fr)}
.ai-features{grid-template-columns:1fr}
.community-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.reviews-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.footer-inner{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr}
.section{padding:40px 0}
.section-title h2{font-size:24px}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr}
.short-video-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.hero-banner{height:300px}
.hero-content h1{font-size:22px}
.partner-logos img{height:35px}
}

/* --- Timeline --- */
.timeline{position:relative;padding-left:40px;margin:20px 0}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:3px;background:#4caf50}
.timeline-item{position:relative;margin-bottom:30px;padding-left:30px}
.timeline-item::before{content:'';position:absolute;left:-33px;top:5px;width:16px;height:16px;border-radius:50%;background:#2e7d32;border:3px solid #e8f5e9;z-index:1}
.timeline-year{font-size:18px;font-weight:700;color:#2e7d32;margin-bottom:8px}
.timeline-content h3{font-size:16px;color:#333;margin-bottom:6px}
.timeline-content p{font-size:14px;color:#666;line-height:1.8}

/* --- About Content --- */
.about-content{max-width:900px;margin:0 auto}

/* --- Utility --- */
.text-center{text-align:center}
.mt-20{margin-top:20px}
.mb-20{margin-bottom:20px}
.hidden{display:none}
.clearfix::after{content:'';display:table;clear:both}

/* --- Interference tags style (hidden) --- */
.itf-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}