/* ========================================
   抖阴 - 植物视频社区 全站样式
   ewjvr04.cn
   ======================================== */

/* Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#333;background:#f8faf8;line-height:1.7;overflow-x:hidden}
a{color:#1a8c5e;text-decoration:none;transition:color .3s}
a:hover{color:#0d6b48}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:#1a3c2a}

/* Container */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:#1a3c2a;margin-bottom:10px}
.section-title p{color:#666;font-size:1.05rem}

/* Header */
.site-header{background:linear-gradient(135deg,#0d3b1e 0%,#1a6b3c 50%,#0d3b1e 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 15px rgba(0,0,0,.2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:45px;width:auto}
.logo span{color:#fff;font-size:1.4rem;font-weight:700;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{color:#e0f0e6;padding:8px 14px;border-radius:6px;font-size:.95rem;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:rgba(255,255,255,.15);color:#fff}
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* Search Bar */
.search-bar{background:#e8f5e9;padding:15px 0;border-bottom:1px solid #c8e6c9}
.search-bar .container{display:flex;justify-content:center}
.search-form{display:flex;max-width:600px;width:100%;position:relative}
.search-form input{flex:1;padding:12px 20px;border:2px solid #1a8c5e;border-radius:25px 0 0 25px;font-size:1rem;outline:none;transition:border-color .3s}
.search-form input:focus{border-color:#0d6b48}
.search-form button{padding:12px 25px;background:#1a8c5e;color:#fff;border:2px solid #1a8c5e;border-left:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:1rem;transition:background .3s}
.search-form button:hover{background:#0d6b48}

/* Banner */
.banner{position:relative;height:500px;overflow:hidden}
.banner img{width:100%;height:100%;object-fit:cover}
.banner-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}
.banner-content{text-align:center;color:#fff;padding:20px;max-width:800px}
.banner-content h1{font-size:2.8rem;margin-bottom:15px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.banner-content p{font-size:1.2rem;line-height:1.8;text-shadow:1px 1px 4px rgba(0,0,0,.4)}
.banner-content .btn{display:inline-block;margin-top:20px;padding:12px 35px;background:#1a8c5e;color:#fff;border-radius:30px;font-size:1.1rem;transition:all .3s;border:2px solid transparent}
.banner-content .btn:hover{background:transparent;border-color:#fff;color:#fff}

/* Breadcrumb */
.breadcrumb{padding:12px 0;background:#fff;border-bottom:1px solid #e0e0e0;font-size:.9rem}
.breadcrumb a{color:#1a8c5e}
.breadcrumb span{color:#999;margin:0 8px}

/* Video Cards */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s;position:relative}
.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}
.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)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(26,140,94,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer}
.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-card:hover .play-btn{opacity:1}
.video-info{padding:15px}
.video-info h3{font-size:1rem;margin-bottom:8px;color:#1a3c2a;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:15px;color:#999;font-size:.85rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:2px 8px;background:#e8f5e9;color:#1a8c5e;border-radius:3px;font-size:.75rem;margin-top:8px}

/* Module Sections */
.module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.module-card{background:#fff;border-radius:12px;padding:30px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.06);transition:transform .3s}
.module-card:hover{transform:translateY(-3px)}
.module-card .icon{width:60px;height:60px;background:linear-gradient(135deg,#1a8c5e,#2ecc71);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 15px;color:#fff;font-size:1.5rem}
.module-card h3{color:#1a3c2a;margin-bottom:10px;font-size:1.1rem}
.module-card p{color:#666;font-size:.95rem;line-height:1.6}

/* Expert Section */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-3px)}
.expert-card img{width:100%;height:250px;object-fit:cover}
.expert-card .info{padding:20px}
.expert-card h3{color:#1a3c2a;margin-bottom:5px}
.expert-card .title{color:#1a8c5e;font-size:.9rem;margin-bottom:10px}
.expert-card p{color:#666;font-size:.9rem;line-height:1.5;margin-bottom:15px}
.expert-card .btn-sm{display:inline-block;padding:6px 18px;background:#1a8c5e;color:#fff;border-radius:20px;font-size:.85rem;transition:background .3s}
.expert-card .btn-sm:hover{background:#0d6b48}

/* Partner Logos */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall .partner-item{background:#fff;padding:15px 25px;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.06);font-size:1.1rem;font-weight:600;color:#1a3c2a;transition:transform .3s}
.partner-wall .partner-item:hover{transform:scale(1.05)}

/* FAQ Section */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:0 2px 10px rgba(0,0,0,.05);overflow:hidden}
.faq-question{padding:18px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#1a3c2a;transition:background .3s}
.faq-question:hover{background:#f0f9f4}
.faq-question::after{content:"+";font-size:1.3rem;color:#1a8c5e;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{padding:0 25px;max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;color:#555;line-height:1.7}
.faq-item.active .faq-answer{max-height:300px;padding:0 25px 18px}

/* Reviews */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:#fff;border-radius:12px;padding:25px;box-shadow:0 4px 15px rgba(0,0,0,.06);position:relative}
.review-card::before{content:"\201C";font-size:4rem;color:#e8f5e9;position:absolute;top:5px;left:15px;line-height:1}
.review-card .stars{color:#f5a623;margin-bottom:10px;font-size:1.1rem}
.review-card p{color:#555;line-height:1.7;margin-bottom:12px;padding-left:10px}
.review-card .reviewer{display:flex;align-items:center;gap:10px;color:#999;font-size:.9rem}
.review-card .reviewer strong{color:#1a3c2a}

/* Social Share */
.share-bar{display:flex;justify-content:center;gap:15px;flex-wrap:wrap}
.share-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:25px;color:#fff;font-size:.95rem;transition:transform .3s}
.share-btn:hover{transform:scale(1.05);color:#fff}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00a1d6}

/* How-To Guide */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.howto-step{text-align:center;padding:25px;background:#fff;border-radius:12px;box-shadow:0 4px 15px rgba(0,0,0,.06)}
.howto-step .step-num{width:50px;height:50px;background:#1a8c5e;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;margin:0 auto 15px}
.howto-step h4{color:#1a3c2a;margin-bottom:8px}
.howto-step p{color:#666;font-size:.9rem}

/* Contact Section */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-info{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 15px rgba(0,0,0,.06)}
.contact-info h3{color:#1a3c2a;margin-bottom:15px;font-size:1.2rem}
.contact-info p{color:#555;margin-bottom:10px;line-height:1.7}
.contact-info .qr-codes{display:flex;gap:20px;margin-top:20px}
.contact-info .qr-codes img{width:150px;height:150px;border-radius:8px}

/* AI Section */
.ai-features{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.ai-card{background:linear-gradient(135deg,#0d3b1e,#1a6b3c);border-radius:12px;padding:30px;color:#fff;text-align:center;transition:transform .3s}
.ai-card:hover{transform:translateY(-3px)}
.ai-card h3{margin-bottom:10px;font-size:1.1rem}
.ai-card p{color:#c8e6c9;font-size:.95rem;line-height:1.6}

/* Footer */
.site-footer{background:linear-gradient(135deg,#0a2e17,#0d3b1e);color:#c8e6c9;padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;margin-bottom:15px;font-size:1.1rem}
.footer-col p,.footer-col a{color:#a0c8b0;font-size:.9rem;line-height:1.8}
.footer-col a{display:block;transition:color .3s}
.footer-col a:hover{color:#2ecc71}
.footer-col .qr-img{width:120px;height:120px;border-radius:8px;margin-top:10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;color:#7a9e8a;font-size:.85rem}
.footer-bottom a{color:#2ecc71}

/* MCP Frontend Placeholder */
.mcp-widget{background:#fff;border-radius:12px;padding:20px;margin-top:20px;box-shadow:0 2px 10px rgba(0,0,0,.06)}
.mcp-widget .mcp-header{display:flex;align-items:center;gap:10px;margin-bottom:15px;padding-bottom:10px;border-bottom:1px solid #e0e0e0}
.mcp-widget .mcp-status{width:10px;height:10px;background:#2ecc71;border-radius:50%}
.mcp-widget .mcp-body{min-height:100px;background:#f8faf8;border-radius:8px;padding:15px;color:#666;font-size:.9rem}

/* Lazy Load Placeholder */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}

/* Responsive */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-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}
  .banner{height:350px}
  .banner-content h1{font-size:1.8rem}
  .banner-content p{font-size:1rem}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .module-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .ai-features{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:40px 0}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .banner{height:280px}
  .banner-content h1{font-size:1.5rem}
}

/* Interference tags - hidden but present for SEO */
.dg-noise{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}