/* 91植物视频社区 - 全站样式 cexqyn.cn */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Microsoft YaHei','PingFang SC','Helvetica Neue',Arial,sans-serif;color:#333;line-height:1.8;background:#f8faf5}
a{color:#2d8c3c;text-decoration:none;transition:color .3s}
a:hover{color:#1a6b28}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 15px}

/* 头部导航 */
.site-header{background:#1a3a1a;color:#fff;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:8px 15px;max-width:1200px;margin:0 auto}
.logo-area{display:flex;align-items:center;gap:10px}
.logo-area img{height:50px;width:auto}
.logo-area h1{font-size:22px;color:#7cfc00;margin:0}
.logo-area h1 span{color:#fff;font-size:14px;display:block;font-weight:normal}
.main-nav{display:flex;gap:0}
.main-nav a{color:#ddd;padding:12px 16px;font-size:15px;transition:all .3s;border-bottom:3px solid transparent}
.main-nav a:hover,.main-nav a.active{color:#7cfc00;border-bottom-color:#7cfc00;background:rgba(255,255,255,.05)}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}

/* 搜索框 */
.search-bar{background:#143014;padding:10px 0;border-bottom:1px solid #2d5a2d}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 18px;border:2px solid #3a7a3a;border-right:none;border-radius:25px 0 0 25px;font-size:14px;outline:none;background:#fff}
.search-box input:focus{border-color:#7cfc00}
.search-box button{padding:10px 25px;background:#2d8c3c;color:#fff;border:2px solid #2d8c3c;border-radius:0 25px 25px 0;cursor:pointer;font-size:14px;transition:background .3s}
.search-box button:hover{background:#1a6b28}

/* Banner */
.hero-banner{position:relative;height:500px;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;justify-content:center;align-items:center;text-align:center;background:linear-gradient(rgba(0,0,0,.3),rgba(0,50,0,.5));padding:20px}
.hero-overlay h2{font-size:42px;color:#fff;text-shadow:2px 2px 8px rgba(0,0,0,.7);margin-bottom:15px}
.hero-overlay h2 em{color:#7cfc00;font-style:normal}
.hero-overlay p{font-size:18px;color:#e0e0e0;max-width:700px;text-shadow:1px 1px 4px rgba(0,0,0,.5)}
.hero-overlay .hero-tags{margin-top:20px;display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.hero-overlay .hero-tags span{background:rgba(124,252,0,.2);border:1px solid #7cfc00;color:#fff;padding:5px 15px;border-radius:20px;font-size:13px}

/* 区块通用 */
.section{padding:50px 0}
.section-alt{background:#eef5e8}
.section-dark{background:#1a3a1a;color:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:30px;color:#1a3a1a;position:relative;display:inline-block;padding-bottom:12px}
.section-title h2::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:#2d8c3c}
.section-dark .section-title h2{color:#7cfc00}
.section-dark .section-title h2::after{background:#7cfc00}
.section-title p{color:#666;margin-top:10px;font-size:15px}
.section-dark .section-title p{color:#aaa}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 3px 15px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s;cursor:pointer}
.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;background:#222}
.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(45,140,60,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;z-index:5}
.video-card:hover .video-play-btn{opacity:1}
.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-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:3px;font-size:12px}
.video-info{padding:12px 15px}
.video-info h3{font-size:15px;color:#1a3a1a;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info .video-meta{display:flex;justify-content:space-between;color:#888;font-size:12px}
.video-info .video-meta span{display:flex;align-items:center;gap:3px}
.video-info .video-tags{margin-top:8px;display:flex;gap:5px;flex-wrap:wrap}
.video-info .video-tags span{background:#eef5e8;color:#2d8c3c;padding:2px 8px;border-radius:10px;font-size:11px}

/* 视频标签badge */
.video-badge{position:absolute;top:8px;left:8px;background:rgba(45,140,60,.9);color:#fff;padding:3px 10px;border-radius:4px;font-size:11px;font-weight:bold;z-index:3}

/* 模块卡片 */
.module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.module-card{background:#fff;border-radius:12px;padding:30px 25px;text-align:center;box-shadow:0 3px 15px rgba(0,0,0,.06);transition:transform .3s}
.module-card:hover{transform:translateY(-3px)}
.module-card .icon{font-size:40px;margin-bottom:15px}
.module-card h3{font-size:18px;color:#1a3a1a;margin-bottom:10px}
.module-card p{color:#666;font-size:14px;line-height:1.7}

/* 专家卡片 */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 3px 15px rgba(0,0,0,.08);text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-3px)}
.expert-card img{width:100%;height:200px;object-fit:cover}
.expert-card .expert-info{padding:20px 15px}
.expert-card h3{font-size:17px;color:#1a3a1a;margin-bottom:5px}
.expert-card .role{color:#2d8c3c;font-size:13px;margin-bottom:8px}
.expert-card p{color:#666;font-size:13px;line-height:1.6}
.expert-card .expert-btn{display:inline-block;margin-top:12px;padding:6px 18px;background:#2d8c3c;color:#fff;border-radius:20px;font-size:13px;transition:background .3s}
.expert-card .expert-btn:hover{background:#1a6b28;color:#fff}

/* 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-item .faq-q{padding:18px 25px;font-size:16px;color:#1a3a1a;font-weight:bold;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-item .faq-q:hover{background:#f0f8e8}
.faq-item .faq-q::after{content:'+';font-size:22px;color:#2d8c3c;transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 25px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;color:#555;font-size:14px;line-height:1.8}
.faq-item.active .faq-a{padding:0 25px 18px;max-height:500px}

/* 用户评论 */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:#fff;border-radius:10px;padding:25px;box-shadow:0 2px 10px 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;font-style:italic;margin-bottom:12px}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer .avatar{width:40px;height:40px;border-radius:50%;background:#2d8c3c;color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:bold}
.review-card .reviewer .name{font-size:14px;color:#333;font-weight:bold}
.review-card .reviewer .date{font-size:12px;color:#999}

/* 合作品牌 */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.brand-wall .brand-item{background:#fff;padding:15px 25px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.05);font-size:16px;color:#555;font-weight:bold;transition:transform .3s}
.brand-wall .brand-item:hover{transform:scale(1.05)}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-card{background:#fff;border-radius:12px;padding:30px;box-shadow:0 3px 12px rgba(0,0,0,.06)}
.contact-card h3{font-size:20px;color:#1a3a1a;margin-bottom:15px;padding-bottom:10px;border-bottom:2px solid #eef5e8}
.contact-card .info-item{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;font-size:14px;color:#555}
.contact-card .info-item strong{color:#1a3a1a;min-width:80px}

/* 分享按钮 */
.share-bar{display:flex;justify-content:center;gap:15px;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:25px;color:#fff;font-size:13px;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}

/* 页脚 */
.site-footer{background:#0d1f0d;color:#aaa;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h4{color:#7cfc00;font-size:16px;margin-bottom:15px}
.footer-col a{display:block;color:#999;font-size:13px;padding:3px 0;transition:color .3s}
.footer-col a:hover{color:#7cfc00}
.footer-col p{font-size:13px;line-height:1.7}
.footer-col img{max-width:120px;margin-top:10px;border-radius:8px}
.footer-bottom{border-top:1px solid #1a3a1a;padding-top:20px;text-align:center;font-size:13px}
.footer-bottom .update-time{color:#666;margin-top:5px}

/* 面包屑 */
.breadcrumb{padding:12px 0;font-size:13px;color:#888}
.breadcrumb a{color:#2d8c3c}
.breadcrumb span{margin:0 5px;color:#ccc}

/* How-To指南 */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:20px}
.howto-step{background:#fff;border-radius:10px;padding:25px 20px;text-align:center;box-shadow:0 2px 10px rgba(0,0,0,.06);position:relative}
.howto-step .step-num{width:40px;height:40px;background:#2d8c3c;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:bold;margin:0 auto 12px}
.howto-step h4{font-size:15px;color:#1a3a1a;margin-bottom:8px}
.howto-step p{font-size:13px;color:#666}

/* 内页样式 */
.page-hero{background:linear-gradient(135deg,#1a3a1a 0%,#2d5a2d 50%,#1a3a1a 100%);padding:60px 0;text-align:center;color:#fff}
.page-hero h1{font-size:36px;color:#7cfc00;margin-bottom:10px}
.page-hero h2{font-size:18px;color:#aaa;font-weight:normal;margin-bottom:8px}
.page-hero p{font-size:16px;color:#ccc;max-width:700px;margin:0 auto}
.page-content{padding:40px 0}

/* 回到顶部按钮 */
#back-to-top-91{position:fixed;bottom:30px;right:30px;width:45px;height:45px;background:#2d8c3c;color:#fff;border-radius:50%;display:none;align-items:center;justify-content:center;font-size:18px;cursor:pointer;z-index:999;box-shadow:0 3px 10px rgba(0,0,0,.2);transition:opacity .3s,background .3s}
#back-to-top-91:hover{background:#1a6b28}

/* 视频模拟播放器 */
.fake-video-player{position:absolute;top:0;left:0;right:0;bottom:0;z-index:10}

/* 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:992px){
.video-grid{grid-template-columns:repeat(2,1fr)}
.module-grid{grid-template-columns:repeat(2,1fr)}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
.howto-steps{grid-template-columns:repeat(2,1fr)}
.contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#1a3a1a;flex-direction:column;padding:10px 0}
.main-nav.show{display:flex}
.nav-toggle{display:block}
.hero-banner{height:350px}
.hero-overlay h2{font-size:28px}
.hero-overlay p{font-size:15px}
.video-grid{grid-template-columns:1fr}
.review-grid{grid-template-columns:1fr}
.header-inner{flex-wrap:wrap}
.section{padding:30px 0}
.section-title h2{font-size:24px}
.page-hero{padding:40px 0}
.page-hero h1{font-size:28px}
}
@media(max-width:480px){
.hero-banner{height:280px}
.hero-overlay h2{font-size:22px}
.module-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.page-hero h1{font-size:24px}
.share-bar{flex-wrap:wrap}
}

/* 打印样式 */
@media print{
.site-header,.search-bar,.nav-toggle,.share-bar,.noise-wrap,#back-to-top-91{display:none!important}
body{background:#fff;color:#000}
.section{padding:20px 0}
}