/* ===== 91植物视频社区 - yohvt.cn 全站样式 ===== */
/* 干扰标签隐藏 */
.interference{position:absolute;left:-9999px;top:-9999px;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-1}

/* 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','Noto Sans SC',sans-serif;color:#333;background:#f8faf5;line-height:1.8}
a{color:#1a8c3f;text-decoration:none;transition:color .3s}
a:hover{color:#0d6b2e}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.4;color:#1a3a0a}

/* Container */
.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}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 0;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.nav-logo{display:flex;align-items:center;gap:8px}
.nav-logo img{height:40px;width:auto}
.nav-logo span{font-size:18px;font-weight:700;color:#1a8c3f}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:8px 14px;border-radius:6px;font-size:15px;color:#444;font-weight:500;transition:all .3s}
.nav-links a:hover,.nav-links a.active{background:#e8f5e9;color:#1a8c3f}
.nav-search{display:flex;align-items:center;gap:6px}
.nav-search input{border:2px solid #c8e6c9;border-radius:20px;padding:6px 16px;font-size:14px;outline:none;width:200px;transition:border-color .3s}
.nav-search input:focus{border-color:#1a8c3f}
.nav-search button{background:#1a8c3f;color:#fff;border:none;border-radius:20px;padding:6px 16px;cursor:pointer;font-size:14px;transition:background .3s}
.nav-search button:hover{background:#0d6b2e}
.mobile-menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:#333}

/* ===== Hero Banner ===== */
.hero-section{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-section .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.65)}
.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)}
.hero-content .hero-sub{font-size:20px;margin-bottom:24px;text-shadow:1px 1px 4px rgba(0,0,0,.4);line-height:1.6}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.hero-content .hero-tags span{background:rgba(26,140,63,.8);padding:6px 16px;border-radius:20px;font-size:14px}

/* ===== 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:#1a3a0a;margin-bottom:8px}
.section-title p{color:#666;font-size:16px}

/* ===== Video Cards 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:transform .3s,box-shadow .3s;cursor:pointer}
.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}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(26,140,63,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.play-btn::after{content:'';border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-card:hover .play-btn{opacity:1}
.video-info{padding:14px 16px}
.video-info h3{font-size:15px;margin-bottom:6px;color:#222;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:12px;color:#999}
.video-meta span{display:flex;align-items:center;gap:3px}
.video-tag{display:inline-block;background:#e8f5e9;color:#1a8c3f;padding:2px 8px;border-radius:10px;font-size:11px;margin-top:6px}

/* ===== Feature Modules ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border-radius:12px;padding:30px 24px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:transform .3s}
.feature-card:hover{transform:translateY(-4px)}
.feature-icon{font-size:40px;margin-bottom:16px}
.feature-card h3{font-size:18px;margin-bottom:10px;color:#1a3a0a}
.feature-card p{color:#666;font-size:14px;line-height:1.7}

/* ===== 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 2px 12px rgba(0,0,0,.06);text-align:center;padding:24px 16px;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;object-fit:cover;border:3px solid #c8e6c9}
.expert-card h3{font-size:16px;margin-bottom:4px;color:#1a3a0a}
.expert-card .expert-title{color:#1a8c3f;font-size:13px;margin-bottom:8px}
.expert-card p{color:#666;font-size:13px;line-height:1.6;margin-bottom:12px}
.expert-btn{display:inline-block;background:#e8f5e9;color:#1a8c3f;padding:6px 16px;border-radius:20px;font-size:13px;transition:all .3s}
.expert-btn:hover{background:#1a8c3f;color:#fff}

/* ===== Brand Wall ===== */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.brand-wall .brand-item{background:#fff;padding:16px 28px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.05);font-size:16px;font-weight:600;color:#555;transition:transform .3s}
.brand-wall .brand-item:hover{transform:scale(1.05)}

/* ===== Reviews ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);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:#f5a623;font-size:16px;margin-bottom:8px}
.review-card p{color:#555;font-size:14px;line-height:1.7;margin-bottom:12px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:8px}
.review-card .reviewer-name{font-weight:600;color:#333;font-size:14px}
.review-card .reviewer-date{color:#999;font-size:12px}

/* ===== 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,.04);overflow:hidden}
.faq-q{padding:18px 24px;font-weight:600;color:#1a3a0a;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:15px;transition:background .3s}
.faq-q:hover{background:#f0f8f0}
.faq-q::after{content:'+';font-size:20px;color:#1a8c3f;transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .3s;color:#666;font-size:14px;line-height:1.7}
.faq-item.active .faq-a{padding:0 24px 18px;max-height:500px}

/* ===== Stats Bar ===== */
.stats-bar{background:linear-gradient(135deg,#1a8c3f,#2ecc71);padding:40px 0;color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item .stat-num{font-size:36px;font-weight:700}
.stat-item .stat-label{font-size:14px;opacity:.9;margin-top:4px}

/* ===== How-To Guide ===== */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.howto-step{text-align:center;padding:24px 16px}
.howto-step .step-num{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:#1a8c3f;color:#fff;font-size:20px;font-weight:700;margin-bottom:16px}
.howto-step h4{font-size:16px;margin-bottom:8px;color:#1a3a0a}
.howto-step p{color:#666;font-size:13px}

/* ===== Contact Section ===== */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;align-items:start}
.contact-info h3{font-size:20px;margin-bottom:16px;color:#1a3a0a}
.contact-item{display:flex;gap:12px;margin-bottom:16px;align-items:flex-start}
.contact-item .ci-icon{font-size:20px;min-width:28px;text-align:center}
.contact-item .ci-text{font-size:14px;color:#555}
.contact-item .ci-text strong{color:#333;display:block;margin-bottom:2px}
.contact-qr{display:flex;gap:24px}
.contact-qr .qr-item{text-align:center}
.contact-qr .qr-item img{width:140px;height:140px;border-radius:8px;margin-bottom:8px}
.contact-qr .qr-item span{font-size:13px;color:#666}

/* ===== Share Buttons ===== */
.share-bar{display:flex;gap:12px;justify-content:center;margin-top:20px}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:13px;color:#fff;transition:opacity .3s}
.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}

/* ===== Footer ===== */
.site-footer{background:#1a3a0a;color:#ccc;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col a{display:block;color:#aaa;font-size:13px;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:#2ecc71}
.footer-col p{font-size:13px;line-height:1.7;color:#aaa}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:13px;color:#888}
.footer-bottom .update-time{margin-top:6px;font-size:12px;color:#777}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:12px 0;font-size:13px;color:#999}
.breadcrumb a{color:#1a8c3f}
.breadcrumb span{margin:0 6px;color:#ccc}

/* ===== Inner Page Content ===== */
.page-hero{background:linear-gradient(135deg,#1a8c3f,#0d6b2e);padding:60px 0;color:#fff;text-align:center}
.page-hero h1{font-size:36px;margin-bottom:10px;color:#fff}
.page-hero p{font-size:16px;opacity:.9}
.content-section{padding:40px 0}
.content-section h2{font-size:24px;margin-bottom:16px;color:#1a3a0a}
.content-section h3{font-size:20px;margin-bottom:12px;color:#1a3a0a}
.content-section p{margin-bottom:16px;color:#555;font-size:15px;line-height:1.8}
.content-section ul{margin-bottom:16px;padding-left:20px}
.content-section ul li{margin-bottom:8px;color:#555;font-size:14px;position:relative;padding-left:16px}
.content-section ul li::before{content:'';position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:#1a8c3f}

/* ===== MCP Frontend Mock ===== */
.mcp-widget{background:#f0f8f0;border:2px solid #c8e6c9;border-radius:12px;padding:24px;margin:20px 0}
.mcp-widget h4{color:#1a8c3f;margin-bottom:12px}
.mcp-widget .mcp-input{display:flex;gap:8px}
.mcp-widget input{flex:1;padding:10px 16px;border:2px solid #c8e6c9;border-radius:8px;font-size:14px;outline:none}
.mcp-widget button{background:#1a8c3f;color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-size:14px}

/* ===== Responsive ===== */
@media(max-width:1024px){
.video-grid{grid-template-columns:repeat(3,1fr)}
.feature-grid{grid-template-columns:repeat(2,1fr)}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:16px;box-shadow:0 4px 12px rgba(0,0,0,.1)}
.nav-links.show{display:flex}
.mobile-menu-btn{display:block}
.hero-section{height:380px}
.hero-content h1{font-size:28px}
.hero-content .hero-sub{font-size:16px}
.video-grid{grid-template-columns:repeat(2,1fr);gap:16px}
.feature-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.review-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:repeat(2,1fr)}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr}
.nav-search input{width:140px}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr}
.stats-grid{grid-template-columns:1fr}
.hero-section{height:300px}
.hero-content h1{font-size:24px}
.section{padding:40px 0}
}