/* 91植物视频社区 - 全站样式 bneeohu.cn */
*{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:#2d7d46;text-decoration:none;transition:color .3s}
a:hover{color:#1a5c30}
img{max-width:100%;height:auto;display:block}
.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:#2d7d46;font-weight:700}
.logo-area h1 span{color:#1a5c30}
.main-nav{display:flex;gap:0}
.main-nav a{padding:10px 16px;font-size:15px;color:#444;font-weight:500;border-bottom:3px solid transparent;transition:all .3s}
.main-nav a:hover,.main-nav a.active{color:#2d7d46;border-bottom-color:#2d7d46}
.mobile-menu-btn{display:none;font-size:24px;cursor:pointer;background:none;border:none;color:#333}
/* 搜索框 */
.search-bar{background:#f0f7f2;padding:12px 0;border-bottom:1px solid #e0ebe4}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 16px;border:2px solid #2d7d46;border-right:none;border-radius:6px 0 0 6px;font-size:14px;outline:none;background:#fff}
.search-box input:focus{border-color:#1a5c30;box-shadow:0 0 8px rgba(45,125,70,.2)}
.search-box button{padding:10px 24px;background:#2d7d46;color:#fff;border:2px solid #2d7d46;border-radius:0 6px 6px 0;cursor:pointer;font-size:14px;font-weight:600;transition:background .3s}
.search-box button:hover{background:#1a5c30}
/* Banner */
.hero-banner{position:relative;height:520px;overflow:hidden;background:#1a3a1a}
.hero-banner img{width:100%;height:100%;object-fit:cover;opacity:.7}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:20px;background:linear-gradient(to bottom,rgba(0,0,0,.2),rgba(0,0,0,.5))}
.hero-overlay h2{font-size:42px;color:#fff;margin-bottom:16px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.hero-overlay h2 em{font-style:normal;color:#7ddf64}
.hero-overlay p{font-size:18px;color:#e8f5e9;max-width:700px;line-height:1.8;text-shadow:1px 1px 4px rgba(0,0,0,.4)}
.hero-overlay .hero-tags{margin-top:20px;display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.hero-overlay .hero-tags span{background:rgba(45,125,70,.8);color:#fff;padding:6px 16px;border-radius:20px;font-size:13px}
/* 面包屑 */
.breadcrumb{padding:12px 0;font-size:13px;color:#888}
.breadcrumb a{color:#2d7d46}
.breadcrumb span{margin:0 6px;color:#ccc}
/* 通用区块 */
.section{padding:60px 0}
.section-alt{background:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:32px;color:#1a3a1a;margin-bottom:8px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:#2d7d46;margin:10px auto 0}
.section-title h3{font-size:20px;color:#2d7d46;margin-bottom:6px}
.section-title p{color:#777;font-size:15px;max-width:600px;margin:0 auto}
/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,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:#1a3a1a}
.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)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(45,125,70,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.video-card:hover .video-play-btn{opacity:1}
.video-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-play-btn.playing::after{border-width:12px 0 12px 0;border-left:5px solid #fff;border-right:5px solid #fff;width:14px;height:24px;border-style:solid;margin-left:0}
.video-thumb.video-playing{box-shadow:inset 0 0 0 3px #2d7d46}
.video-thumb.video-hover img{transform:scale(1.05)}
.video-preview{display:none}
/* 滚动动画 - 默认可见，JS增强时添加动画 */
.section.section-animate{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.section.section-animate.section-visible{opacity:1;transform:translateY(0)}
.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}
.video-info{padding:14px 16px}
.video-info h4{font-size:15px;color:#222;margin-bottom:6px;line-height:1.5;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:4px}
.video-tags{margin-top:8px;display:flex;gap:6px;flex-wrap:wrap}
.video-tags span{background:#e8f5e9;color:#2d7d46;padding:2px 8px;border-radius:10px;font-size:11px}
/* 专家卡片 */
.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;padding:30px 20px;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:120px;height:120px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:4px solid #e8f5e9}
.expert-card h4{font-size:18px;color:#1a3a1a;margin-bottom:4px}
.expert-card .role{color:#2d7d46;font-size:14px;margin-bottom:10px}
.expert-card p{font-size:13px;color:#777;line-height:1.7;margin-bottom:14px}
.expert-card .expert-btns{display:flex;gap:10px;justify-content:center}
.btn{display:inline-block;padding:8px 20px;border-radius:6px;font-size:13px;font-weight:600;transition:all .3s;cursor:pointer;border:none}
.btn-primary{background:#2d7d46;color:#fff}
.btn-primary:hover{background:#1a5c30;color:#fff}
.btn-outline{background:transparent;color:#2d7d46;border:2px solid #2d7d46}
.btn-outline:hover{background:#2d7d46;color:#fff}
.btn-lg{padding:12px 32px;font-size:16px}
/* 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:#1a3a1a;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-question:hover{background:#f0f7f2}
.faq-question::after{content:'+';font-size:22px;color:#2d7d46;font-weight:700;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;color:#666;font-size:14px;line-height:1.8}
.faq-item.active .faq-answer{padding:0 24px 18px;max-height:500px}
/* 评论 */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 16px rgba(0,0,0,.08)}
.review-card .stars{color:#f5a623;font-size:16px;margin-bottom:10px}
.review-card p{font-size:14px;color:#555;line-height:1.8;margin-bottom:12px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer .avatar{width:40px;height:40px;border-radius:50%;background:#e8f5e9;display:flex;align-items:center;justify-content:center;color:#2d7d46;font-weight:700;font-size:16px}
.review-card .reviewer .name{font-size:14px;color:#333;font-weight:600}
.review-card .reviewer .date{font-size:12px;color:#999}
/* 合作品牌 */
.brand-wall{display:flex;flex-wrap:wrap;gap:30px;justify-content:center;align-items:center;padding:20px 0}
.brand-wall .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:#555;transition:transform .3s}
.brand-wall .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,.08)}
.contact-card h4{font-size:18px;color:#1a3a1a;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid #e8f5e9}
.contact-card p{font-size:14px;color:#666;margin-bottom:8px;line-height:1.8}
.contact-card .contact-item{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px}
.contact-card .contact-icon{width:36px;height:36px;background:#e8f5e9;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#2d7d46;font-weight:700;flex-shrink:0}
/* 分享按钮 */
.share-bar{display:flex;gap:12px;justify-content:center;padding:20px 0;flex-wrap:wrap}
.share-btn{display:flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:13px;color:#fff;font-weight:600;transition:opacity .3s}
.share-btn:hover{opacity:.85;color:#fff}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#00a1d6}
/* 页脚 */
.site-footer{background:#1a3a1a;color:#c8dcc8;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:30px;margin-bottom:40px}
.footer-col h4{color:#7ddf64;font-size:16px;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-col p,.footer-col a{font-size:13px;color:#a8c8a8;line-height:2}
.footer-col a:hover{color:#7ddf64}
.footer-col img{max-width:120px;border-radius:8px;margin-top:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:13px;color:#6a8a6a}
.footer-bottom a{color:#7ddf64}
/* How-To指南 */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:24px;counter-reset:step}
.howto-step{background:#fff;border-radius:12px;padding:30px 24px;box-shadow:0 4px 16px rgba(0,0,0,.08);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-14px;left:24px;width:36px;height:36px;background:#2d7d46;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}
.howto-step h4{margin-top:10px;margin-bottom:8px;color:#1a3a1a;font-size:16px}
.howto-step p{font-size:13px;color:#777;line-height:1.7}
/* 模块标签 */
.module-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px}
.module-tags a{background:#e8f5e9;color:#2d7d46;padding:6px 16px;border-radius:20px;font-size:13px;transition:all .3s}
.module-tags a:hover{background:#2d7d46;color:#fff}
/* 内页内容 */
.page-content{padding:40px 0}
.page-content h2{font-size:28px;color:#1a3a1a;margin-bottom:20px}
.page-content h3{font-size:22px;color:#2d7d46;margin:30px 0 14px}
.page-content p{font-size:15px;color:#555;line-height:2;margin-bottom:16px}
.page-content ul,.page-content ol{margin:16px 0 16px 24px}
.page-content li{font-size:14px;color:#555;line-height:2}
/* 干扰标签隐藏 */
.noise-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}
/* 响应式 */
@media(max-width:768px){
.header-inner{flex-wrap:wrap}
.main-nav{display:none;width:100%;flex-direction:column;gap:0;padding:10px 0}
.main-nav.show{display:flex}
.main-nav a{padding:12px 0;border-bottom:1px solid #eee}
.mobile-menu-btn{display:block}
.hero-banner{height:360px}
.hero-overlay h2{font-size:26px}
.hero-overlay p{font-size:14px}
.section{padding:40px 0}
.section-title h2{font-size:24px}
.video-grid{grid-template-columns:1fr 1fr}
.expert-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.contact-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.logo-area h1{font-size:18px}
}