/* 91植物视频社区 - 奥运会风格主题 btyzzf.cn */
*{margin:0;padding:0;box-sizing:border-box}
:root{--gold:#c9a84c;--green:#1a7a3a;--dark:#1a1a2e;--light:#f8f9fa;--accent:#e8d48b;--text:#333;--gray:#666;--border:#e0e0e0;--shadow:0 4px 20px rgba(0,0,0,.08)}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--light);line-height:1.8;overflow-x:hidden}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
a{color:var(--green);text-decoration:none;transition:all .3s}
a:hover{color:var(--gold)}
img{max-width:100%;height:auto}
/* 头部导航 */
.site-header{background:linear-gradient(135deg,var(--dark) 0%,#16213e 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 15px rgba(0,0,0,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo-area{display:flex;align-items:center;gap:12px}
.logo-area img{border-radius:50%;border:2px solid var(--gold)}
.logo-area h1{color:#fff;font-size:1.4rem}
.logo-area h1 span{color:var(--gold)}
.main-nav{display:flex;gap:0}
.main-nav a{color:#ddd;padding:10px 16px;font-size:.95rem;border-bottom:3px solid transparent;transition:all .3s}
.main-nav a:hover,.main-nav a.active{color:var(--gold);border-bottom-color:var(--gold)}
.nav-toggle{display:none;color:#fff;font-size:1.8rem;cursor:pointer;background:none;border:none}
/* 搜索框 */
.search-bar{background:linear-gradient(90deg,var(--green),#2d8f4e);padding:10px 0}
.search-wrap{display:flex;max-width:600px;margin:0 auto}
.search-wrap input{flex:1;padding:10px 18px;border:none;border-radius:25px 0 0 25px;font-size:.95rem;outline:none}
.search-wrap button{padding:10px 25px;background:var(--gold);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;font-weight:bold}
.search-wrap button:hover{background:#b8943f}
/* Banner */
.banner{position:relative;min-height:520px;display:flex;align-items:center;background-size:cover;background-position:center;background-repeat:no-repeat}
.banner::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(26,26,46,.92) 0%,rgba(26,26,46,.7) 50%,transparent 100%)}
.banner-content{position:relative;z-index:2;max-width:650px;padding:60px 0 60px 40px}
.banner-content h2{color:#fff;font-size:2.6rem;margin-bottom:15px;line-height:1.3}
.banner-content h2 span{color:var(--gold);display:block;font-size:3rem}
.banner-subtitle{color:var(--accent);font-size:1.15rem;margin-bottom:20px;line-height:1.8}
.banner-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}
.banner-tags span{background:rgba(201,168,76,.2);color:var(--gold);padding:5px 14px;border-radius:20px;font-size:.85rem;border:1px solid rgba(201,168,76,.3)}
/* 视频卡片 */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);transition:all .3s;cursor:pointer}
.video-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.15)}
.video-thumb{position:relative;padding-top:56.25%;background:#222;overflow:hidden}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:60px;height:60px;background:rgba(201,168,76,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .3s;opacity:0}
.play-btn::after{content:'';border-left:22px solid #fff;border-top:13px solid transparent;border-bottom:13px solid transparent;margin-left:5px}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1);opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.8rem}
.video-badge{position:absolute;top:8px;left:8px;background:var(--gold);color:#fff;padding:3px 10px;border-radius:4px;font-size:.75rem;font-weight:bold}
.video-info{padding:14px}
.video-info h3{font-size:.95rem;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;justify-content:space-between;color:var(--gray);font-size:.82rem}
.video-stats{display:flex;gap:12px}
/* 板块通用 */
.section{padding:55px 0}
.section-alt{background:#fff}
.section-dark{background:var(--dark);color:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:var(--dark);margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:var(--gold);margin:10px auto 0}
.section-dark .section-title h2{color:#fff}
.section-title p{color:var(--gray);font-size:1rem;max-width:700px;margin:0 auto}
.section-dark .section-title p{color:#bbb}
/* 模块网格 */
.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:var(--shadow);transition:all .3s;border-top:4px solid var(--gold)}
.module-card:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,.12)}
.module-card .icon{font-size:2.5rem;margin-bottom:15px}
.module-card h3{font-size:1.15rem;margin-bottom:10px;color:var(--dark)}
.module-card p{color:var(--gray);font-size:.9rem;line-height:1.7}
/* 专家展示 */
.expert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);text-align:center;padding:30px 20px;transition:all .3s}
.expert-card:hover{transform:translateY(-3px)}
.expert-card img{width:110px;height:110px;border-radius:50%;object-fit:cover;border:4px solid var(--gold);margin-bottom:15px}
.expert-card h3{font-size:1.1rem;margin-bottom:5px}
.expert-card .title{color:var(--gold);font-size:.9rem;margin-bottom:10px}
.expert-card p{color:var(--gray);font-size:.85rem;line-height:1.7}
.expert-card .btn-group{margin-top:15px;display:flex;gap:10px;justify-content:center}
.btn-sm{padding:6px 16px;border-radius:20px;font-size:.82rem;border:1px solid var(--gold);color:var(--gold);transition:all .3s}
.btn-sm:hover{background:var(--gold);color:#fff}
/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.faq-q{padding:18px 24px;font-weight:bold;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:1rem}
.faq-q::after{content:'+';font-size:1.4rem;color:var(--gold);transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s;color:var(--gray);font-size:.92rem;line-height:1.8}
.faq-item.active .faq-a{padding:0 24px 18px;max-height:500px}
/* 评论 */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:#fff;border-radius:12px;padding:25px;box-shadow:var(--shadow);border-left:4px solid var(--gold)}
.review-card .stars{color:var(--gold);font-size:1.1rem;margin-bottom:10px}
.review-card p{color:var(--gray);font-size:.9rem;line-height:1.7;margin-bottom:15px;font-style:italic}
.reviewer{display:flex;align-items:center;gap:12px}
.reviewer .avatar{width:42px;height:42px;border-radius:50%;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:bold;font-size:1rem}
.reviewer .name{font-weight:bold;font-size:.9rem}
.reviewer .date{color:#999;font-size:.8rem}
/* 联系 */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:25px}
.contact-card{background:#fff;border-radius:12px;padding:30px;box-shadow:var(--shadow)}
.contact-card h3{font-size:1.2rem;margin-bottom:15px;color:var(--dark);border-bottom:2px solid var(--gold);padding-bottom:10px}
.info-item{padding:8px 0;font-size:.92rem;border-bottom:1px dashed var(--border)}
.info-item strong{color:var(--dark)}
/* 分享 */
.share-bar{display:flex;justify-content:center;gap:15px;flex-wrap:wrap}
.share-btn{padding:12px 28px;border-radius:25px;color:#fff;font-size:.92rem;transition:all .3s}
.share-btn:hover{transform:translateY(-2px);color:#fff}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#111}
.share-btn.bilibili{background:#fb7299}
/* 页脚 */
.site-footer{background:var(--dark);color:#ccc;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-col h4{color:var(--gold);font-size:1.05rem;margin-bottom:15px}
.footer-col p,.footer-col a{color:#aaa;font-size:.88rem;display:block;margin-bottom:8px;line-height:1.6}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{text-align:center;padding:20px 0;font-size:.82rem;color:#888}
.footer-bottom a{color:#999;display:inline}
.update-time{margin-top:8px;color:var(--gold);font-size:.85rem}
/* 面包屑 */
.breadcrumb{padding:12px 0;font-size:.88rem;color:var(--gray)}
.breadcrumb a{color:var(--green)}
.breadcrumb span{margin:0 6px;color:#ccc}
/* 页面hero */
.page-hero{background:linear-gradient(135deg,var(--dark),#16213e);padding:50px 0 40px;text-align:center}
.page-hero h1{color:#fff;font-size:2.2rem;margin-bottom:10px}
.page-hero p{color:var(--accent);font-size:1rem}
/* 回到顶部 */
.back-top{position:fixed;bottom:30px;right:30px;width:48px;height:48px;background:var(--gold);color:#fff;border-radius:50%;display:none;align-items:center;justify-content:center;font-size:1.3rem;cursor:pointer;z-index:999;box-shadow:0 4px 15px rgba(0,0,0,.2);transition:all .3s;border:none}
.back-top:hover{background:var(--green);transform:translateY(-3px)}
.back-top.show{display:flex}
/* 视频播放器模拟 */
.video-player-overlay{position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:2000;display:none;align-items:center;justify-content:center}
.video-player-overlay.active{display:flex}
.video-player-box{background:#000;border-radius:12px;width:90%;max-width:800px;aspect-ratio:16/9;position:relative;display:flex;align-items:center;justify-content:center}
.video-player-box .loading{color:#fff;font-size:1.1rem}
.video-player-box .close-player{position:absolute;top:-40px;right:0;color:#fff;font-size:1.5rem;cursor:pointer;background:none;border:none}
/* 干扰标签容器 */
.noise-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none}
/* 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)}
.review-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--dark);flex-direction:column;padding:10px 0;box-shadow:0 5px 15px rgba(0,0,0,.3)}
.main-nav.open{display:flex}
.main-nav a{padding:12px 20px;border-bottom:none;border-left:3px solid transparent}
.main-nav a:hover,.main-nav a.active{border-left-color:var(--gold)}
.nav-toggle{display:block}
.banner{min-height:400px}
.banner-content{padding:40px 20px}
.banner-content h2{font-size:1.8rem}
.banner-content h2 span{font-size:2.2rem}
.video-grid{grid-template-columns: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}
.footer-grid{grid-template-columns:1fr}
.section{padding:35px 0}
}
@media print{.site-header,.site-footer,.search-bar,.back-top,.noise-wrap{display:none}}