/* 91植物视频社区 - 外部样式表 */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#228B22;--primary-dark:#1a6b1a;--primary-light:#4CAF50;--accent:#8BC34A;--bg:#0a0f0a;--bg-card:#111a11;--bg-card-hover:#162016;--text:#e8f5e9;--text-muted:#a5d6a7;--gold:#FFD700;--border:rgba(76,175,80,.18);--radius:12px;--shadow:0 4px 24px rgba(0,0,0,.3)}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--primary-light);text-decoration:none;transition:color .3s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
/* 顶部导航 */
.top-bar{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(10,15,10,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);padding:0 20px;transition:all .3s}
.top-bar .container{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-size:1.5rem;font-weight:700;color:var(--primary-light)}
.brand img{height:48px;width:auto}
.nav-links{display:flex;gap:28px;list-style:none;align-items:center}
.nav-links a{color:var(--text-muted);font-size:.95rem;font-weight:500;padding:6px 0;position:relative;transition:color .3s}
.nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary-light);transition:width .3s}
.nav-links a:hover,.nav-links a.active{color:var(--primary-light)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.mobile-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer}
/* 搜索框 */
.search-wrap{background:rgba(10,15,10,.6);border-bottom:1px solid var(--border);padding:12px 0;margin-top:68px}
.search-bar{display:flex;max-width:600px;margin:0 auto}
.search-bar input{flex:1;padding:10px 18px;border:1px solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);background:var(--bg-card);color:var(--text);font-size:.95rem;outline:none}
.search-bar input:focus{border-color:var(--primary-light)}
.search-bar button{padding:10px 24px;background:var(--primary);color:#fff;border:1px solid var(--primary);border-radius:0 var(--radius) var(--radius) 0;cursor:pointer;font-size:.95rem;transition:background .3s}
.search-bar button:hover{background:var(--primary-dark)}
/* Hero区域 */
.hero{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;filter:brightness(.45)}
.hero-content{position:relative;z-index:2;max-width:700px;padding:60px 0}
.hero-content h1{font-size:2.6rem;font-weight:800;margin-bottom:16px;line-height:1.3}
.hero-content h1 .highlight{color:var(--primary-light);text-shadow:0 0 20px rgba(76,175,80,.4)}
.hero-content p{font-size:1.1rem;color:var(--text-muted);margin-bottom:28px;line-height:1.8}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;border:none}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(34,139,34,.4)}
.btn-outline{background:transparent;color:var(--primary-light);border:2px solid var(--primary-light)}
.btn-outline:hover{background:var(--primary-light);color:#fff}
/* 统计栏 */
.stats-bar{display:flex;justify-content:center;gap:48px;padding:36px 0;background:var(--bg-card);border-bottom:1px solid var(--border);flex-wrap:wrap}
.stat-item{text-align:center}
.stat-item .num{font-size:2rem;font-weight:800;color:var(--primary-light)}
.stat-item .label{font-size:.85rem;color:var(--text-muted);margin-top:4px}
/* 通用区块 */
.section{padding:64px 0}
.section-title{font-size:1.8rem;font-weight:700;text-align:center;margin-bottom:12px}
.section-title .highlight{color:var(--primary-light)}
.section-subtitle{text-align:center;color:var(--text-muted);margin-bottom:40px;font-size:1rem}
/* 视频网格 */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:all .3s;cursor:pointer}
.video-card:hover{transform:translateY(-4px);border-color:var(--primary-light);box-shadow:var(--shadow)}
.video-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.video-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-icon{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.35);opacity:0;transition:opacity .3s}
.video-card:hover .play-icon{opacity:1}
.video-card .play-icon::after{content:'';width:52px;height:52px;background:rgba(34,139,34,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M8 5v14l11-7z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;background-size:28px}
.video-card .video-badge{position:absolute;top:10px;left:10px;background:rgba(34,139,34,.85);color:#fff;padding:3px 10px;border-radius:4px;font-size:.75rem;font-weight:600}
.video-card .card-body{padding:14px}
.video-card .card-title{font-size:.92rem;font-weight:600;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-meta{display:flex;gap:12px;font-size:.78rem;color:var(--text-muted)}
.video-card .card-tags{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.video-card .tag{background:rgba(76,175,80,.12);color:var(--primary-light);padding:2px 8px;border-radius:4px;font-size:.72rem}
/* 视频播放器 */
.video-player-wrap{position:relative;aspect-ratio:16/9;background:#000;border-radius:var(--radius);overflow:hidden;margin-bottom:20px}
.video-player-wrap video{width:100%;height:100%;object-fit:cover}
/* 模块卡片网格 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.module-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:all .3s}
.module-card:hover{border-color:var(--primary-light);transform:translateY(-4px);box-shadow:var(--shadow)}
.module-card .icon{font-size:2.5rem;margin-bottom:16px}
.module-card h3{font-size:1.1rem;font-weight:600;margin-bottom:10px;color:var(--primary-light)}
.module-card p{font-size:.88rem;color:var(--text-muted);line-height:1.6}
/* 专家卡片 */
.expert-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center;transition:all .3s}
.expert-card:hover{border-color:var(--primary-light);box-shadow:var(--shadow)}
.expert-card .avatar{width:100px;height:100px;border-radius:50%;object-fit:cover;margin:0 auto 14px;border:3px solid var(--primary-light)}
.expert-card .role{color:var(--primary-light);font-size:.85rem;margin-bottom:8px}
.expert-card .desc{font-size:.85rem;color:var(--text-muted);line-height:1.6;margin-bottom:14px}
.expert-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.expert-btns .btn{padding:8px 18px;font-size:.82rem}
/* 合作品牌墙 */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;padding:20px 0}
.partner-item{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:16px 28px;font-size:.95rem;font-weight:600;color:var(--text-muted);transition:all .3s}
.partner-item:hover{border-color:var(--primary-light);color:var(--primary-light)}
/* How-to步骤 */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 20px;text-align:center;transition:all .3s}
.step-card:hover{border-color:var(--primary-light)}
.step-num{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 14px}
.step-card h4{margin-bottom:8px;font-size:1rem}
.step-card p{font-size:.85rem;color:var(--text-muted);line-height:1.5}
/* FAQ */
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-question{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem;transition:background .3s}
.faq-question:hover{background:var(--bg-card-hover)}
.faq-question .arrow{transition:transform .3s;font-size:1.2rem}
.faq-item.open .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 20px}
.faq-item.open .faq-answer{max-height:500px;padding:0 20px 16px}
.faq-answer p{font-size:.9rem;color:var(--text-muted);line-height:1.7}
/* 用户评价 */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:all .3s}
.review-card:hover{border-color:var(--primary-light)}
.stars{color:var(--gold);margin-bottom:10px;font-size:1rem}
.review-text{font-size:.88rem;color:var(--text-muted);line-height:1.6;margin-bottom:14px;font-style:italic}
.reviewer{display:flex;align-items:center;gap:10px}
.reviewer-avatar{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700}
.reviewer-name{font-size:.85rem;font-weight:600}
.reviewer-date{font-size:.75rem;color:var(--text-muted)}
/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.contact-box{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.contact-box h3{color:var(--primary-light);margin-bottom:16px;font-size:1.1rem}
.info-line{display:flex;gap:12px;margin-bottom:10px;font-size:.9rem;color:var(--text-muted)}
.info-line strong{color:var(--text);min-width:70px}
/* 分享栏 */
.share-bar{display:flex;justify-content:center;gap:16px;padding:32px 0;flex-wrap:wrap}
.share-btn{padding:10px 24px;border-radius:var(--radius);font-size:.9rem;font-weight:600;transition:all .3s;cursor:pointer;border:none;color:#fff}
.share-btn.wechat{background:#07C160}
.share-btn.weibo{background:#E6162D}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00A1D6}
.share-btn:hover{transform:translateY(-2px);opacity:.9}
/* 页脚 */
.footer{background:var(--bg-card);border-top:1px solid var(--border);padding:48px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand{font-size:.9rem;color:var(--text-muted);line-height:1.7}
.footer-brand .brand{margin-bottom:12px}
.footer h4{color:var(--primary-light);margin-bottom:14px;font-size:.95rem}
.footer a{color:var(--text-muted);font-size:.88rem;display:block;margin-bottom:8px}
.footer a:hover{color:var(--primary-light)}
.footer-qr{display:flex;gap:20px}
.qr-item{text-align:center}
.qr-item img{width:110px;height:110px;border-radius:8px;margin-bottom:6px}
.qr-item span{font-size:.78rem;color:var(--text-muted)}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid var(--border);font-size:.82rem;color:var(--text-muted)}
/* MCP Widget */
.mcp-widget{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin:20px 0;text-align:center;font-size:.82rem;color:var(--text-muted)}
/* 面包屑 */
.breadcrumb{padding:12px 0;font-size:.85rem;color:var(--text-muted)}
.breadcrumb a{color:var(--primary-light)}
/* 页面banner */
.page-banner{position:relative;height:280px;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:68px}
.page-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.35)}
.page-banner .banner-text{position:relative;z-index:2;text-align:center}
.page-banner h1{font-size:2.2rem;font-weight:700;margin-bottom:8px}
.page-banner p{color:var(--text-muted);font-size:1rem}
/* 动画 */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.fade-in.visible{opacity:1;transform:translateY(0)}
/* 响应式 */
@media(max-width:1024px){
.video-grid{grid-template-columns:repeat(3,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
.nav-links{display:none;position:absolute;top:68px;left:0;width:100%;background:rgba(10,15,10,.98);flex-direction:column;padding:20px;gap:16px}
.nav-links.open{display:flex}
.mobile-toggle{display:block}
.hero-content h1{font-size:1.8rem}
.video-grid{grid-template-columns:repeat(2,1fr)}
.grid-3,.review-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:repeat(2,1fr)}
.contact-grid{grid-template-columns:1fr}
.stats-bar{gap:24px}
.footer-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr}
.hero{min-height:400px}
}