:root{--primary:#1B5E20;--primary-light:#4CAF50;--primary-dark:#0D3B13;--accent:#8BC34A;--accent-light:#C5E1A5;--bg:#FAFFF5;--bg-alt:#E8F5E9;--text:#1A2E1A;--text-soft:#3E5E3E;--white:#FFFFFF;--shadow:0 4px 24px rgba(27,94,32,.12);--shadow-sm:0 2px 12px rgba(27,94,32,.08);--radius:8px;--max:1200px;--font:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;--mono:"SF Mono",Consolas,monospace}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;background:var(--bg)}
body{font-family:var(--font);font-size:16px;line-height:1.8;color:var(--text);min-width:320px}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
button{font:inherit;border:0;cursor:pointer}
.wrap{width:min(var(--max),calc(100% - 40px));margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

.site-header{position:sticky;top:0;z-index:100;background:rgba(250,255,245,.97);border-bottom:1px solid rgba(27,94,32,.1);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:20px}
.logo-link{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:900;color:var(--primary)}
.logo-link img{width:42px;height:42px;object-fit:contain}
.logo-link small{display:block;font-size:10px;font-weight:600;color:var(--text-soft);letter-spacing:.1em}
.main-nav ul{display:flex;gap:24px;list-style:none}
.main-nav a{position:relative;font-size:14px;font-weight:700;color:var(--text);padding:6px 0}
.main-nav a::after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--primary-light);transform:scaleX(0);transition:transform .2s}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.nav-toggle{display:none;width:36px;height:36px;background:none;flex-direction:column;justify-content:center;gap:5px;padding:6px}
.nav-toggle span{display:block;height:2px;background:var(--text);transition:transform .2s}

.search-bar{background:var(--bg-alt);border-bottom:1px solid rgba(27,94,32,.08);padding:12px 0}
.search-form{display:flex;max-width:500px;margin:0 auto;border:1px solid rgba(27,94,32,.2);border-radius:var(--radius);overflow:hidden;background:var(--white)}
.search-form input{flex:1;padding:10px 16px;border:0;outline:0;font-size:14px;background:transparent}
.search-form button{padding:10px 20px;background:var(--primary);color:var(--white);font-weight:700;font-size:14px}

.hero{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;background:var(--primary-dark)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.6}
.hero-content{position:relative;z-index:2;padding:80px 0;color:var(--white)}
.hero-content h1{font-size:clamp(32px,5vw,56px);line-height:1.15;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.hero-content p{max-width:640px;font-size:17px;opacity:.92;margin-bottom:24px}
.hero-btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:var(--primary-light);color:var(--white);font-weight:800;border-radius:var(--radius);transition:transform .2s,background .2s}
.hero-btn:hover{transform:translateY(-2px);background:var(--accent);color:var(--white)}

.section{padding:72px 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:var(--primary-dark);color:var(--white)}
.section-title{font-size:clamp(26px,3.5vw,42px);font-weight:900;margin-bottom:12px;color:var(--primary)}
.section--dark .section-title{color:var(--accent-light)}
.section-desc{max-width:700px;color:var(--text-soft);margin-bottom:36px;font-size:16px}
.section--dark .section-desc{color:rgba(255,255,255,.8)}

.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.video-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#2E7D32}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.3);opacity:0;transition:opacity .25s}
.video-card:hover .play-btn{opacity:1}
.play-btn::before{content:"";width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.95);display:flex;align-items:center;justify-content:center}
.play-btn::after{content:"";position:absolute;border-top:10px solid transparent;border-bottom:10px solid transparent;border-left:16px solid var(--primary);margin-left:4px}
.video-info{padding:16px}
.video-info h3{font-size:16px;margin-bottom:6px;line-height:1.4}
.video-info p{font-size:13px;color:var(--text-soft)}
.video-meta{display:flex;gap:12px;margin-top:8px;font-size:12px;color:var(--text-soft)}
.video-meta span{display:flex;align-items:center;gap:4px}

.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.feature-card{padding:28px;background:var(--white);border-radius:var(--radius);border-left:4px solid var(--primary-light);box-shadow:var(--shadow-sm);transition:transform .2s}
.feature-card:hover{transform:translateY(-3px)}
.feature-card h3{font-size:18px;margin-bottom:8px;color:var(--primary)}
.feature-card p{font-size:14px;color:var(--text-soft)}
.feature-card .tag{display:inline-block;margin-top:10px;padding:3px 10px;background:var(--bg-alt);border-radius:20px;font-size:12px;color:var(--primary)}

.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.expert-card{text-align:center;padding:32px 20px;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.expert-card .avatar{width:80px;height:80px;border-radius:50%;background:var(--bg-alt);margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:32px}
.expert-card h3{font-size:18px;margin-bottom:4px}
.expert-card .role{font-size:13px;color:var(--primary-light);margin-bottom:8px}
.expert-card p{font-size:13px;color:var(--text-soft)}
.expert-card .btn-sm{display:inline-block;margin-top:12px;padding:6px 16px;background:var(--primary);color:var(--white);border-radius:var(--radius);font-size:12px;font-weight:700}

.faq-list{max-width:800px}
.faq-item{border-bottom:1px solid rgba(27,94,32,.12);padding:18px 0}
.faq-item summary{font-weight:700;cursor:pointer;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:22px;color:var(--primary);transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin-top:10px;color:var(--text-soft);font-size:14px}

.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.review-card{padding:24px;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-sm);border-top:3px solid var(--accent)}
.review-card .stars{color:#FFC107;font-size:16px;margin-bottom:8px}
.review-card blockquote{font-size:14px;color:var(--text-soft);font-style:italic;margin-bottom:12px}
.review-card .author{font-size:13px;font-weight:700;color:var(--primary)}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info h3{font-size:20px;margin-bottom:16px;color:var(--primary)}
.contact-info ul{list-style:none}
.contact-info li{padding:10px 0;border-bottom:1px solid rgba(27,94,32,.1);font-size:14px;display:flex;gap:10px}
.contact-info li b{min-width:80px;color:var(--primary)}
.qr-wrap{display:flex;gap:20px;flex-wrap:wrap}
.qr-item{text-align:center}
.qr-item img{width:150px;height:150px;border-radius:var(--radius);margin-bottom:8px}
.qr-item span{font-size:12px;color:var(--text-soft)}

.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.8);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer-brand .logo-link{color:var(--white);margin-bottom:12px}
.footer-brand p{font-size:13px;opacity:.8;max-width:300px}
.footer-links h4{color:var(--accent-light);font-size:14px;margin-bottom:12px}
.footer-links ul{list-style:none}
.footer-links li{margin-bottom:6px}
.footer-links a{color:rgba(255,255,255,.7);font-size:13px}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12px;opacity:.7}
.footer-qr{display:flex;gap:16px}
.footer-qr img{width:90px;height:90px;border-radius:4px}
.footer-qr span{display:block;font-size:11px;text-align:center;margin-top:4px}

.share-bar{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:20px;color:rgba(255,255,255,.9);font-size:12px;transition:background .2s}
.share-btn:hover{background:var(--primary-light);color:var(--white)}

.data-block{margin-top:20px;padding:16px;background:#0a1f0a;border-radius:var(--radius);color:#a5d6a7;font:12px/1.6 var(--mono);overflow:auto;white-space:pre-wrap}
.data-block::before{content:"JSON-LD / STRUCTURED DATA";display:block;color:var(--accent);font-weight:700;margin-bottom:8px;letter-spacing:.08em}

.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.howto-step{padding:24px;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-sm);text-align:center}
.howto-step .num{width:40px;height:40px;border-radius:50%;background:var(--primary);color:var(--white);display:inline-flex;align-items:center;justify-content:center;font-weight:900;margin-bottom:12px}
.howto-step h3{font-size:16px;margin-bottom:6px}
.howto-step p{font-size:13px;color:var(--text-soft)}

.partner-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.partner-wall .partner-item{padding:16px 24px;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-sm);font-weight:700;color:var(--primary);font-size:14px}

@media(max-width:768px){
.header-inner{flex-wrap:wrap}
.nav-toggle{display:flex}
.main-nav{display:none;width:100%;order:3}
.main-nav.open{display:block}
.main-nav ul{flex-direction:column;gap:0}
.main-nav li{border-top:1px solid rgba(27,94,32,.1)}
.main-nav a{display:block;padding:12px 0}
.hero{min-height:400px}
.hero-content h1{font-size:28px}
.contact-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.video-grid{grid-template-columns:1fr}
}