/* ========================================
   麻豆传媒 - 植物视频社区 原创样式
   配色：森林绿 #1b5e20 / 翡翠绿 #2e7d32 / 暖金 #c8a951 / 象牙白 #faf8f0
   ======================================== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#2d2d2d;background:#faf8f0;line-height:1.8}
a{color:#2e7d32;text-decoration:none;transition:color .3s}
a:hover{color:#c8a951}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 导航栏 */
.site-header{background:linear-gradient(135deg,#1b5e20 0%,#2e7d32 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(0,0,0,.15)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:0 20px;max-width:1200px;margin:0 auto;height:68px}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:42px;width:auto}
.nav-logo span{color:#fff;font-size:1.3rem;font-weight:700;letter-spacing:1px}
.nav-menu{display:flex;list-style:none;gap:6px}
.nav-menu li a{color:rgba(255,255,255,.9);padding:8px 14px;border-radius:6px;font-size:.95rem;transition:all .3s}
.nav-menu li a:hover,.nav-menu li a.active{background:rgba(255,255,255,.15);color:#fff}
.mobile-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* 搜索框 */
.search-bar{background:#f0f7f0;padding:12px 0;border-bottom:1px solid #c8e6c9}
.search-bar form{display:flex;max-width:600px;margin:0 auto;gap:8px;padding:0 20px}
.search-bar input{flex:1;padding:10px 16px;border:2px solid #a5d6a7;border-radius:25px;font-size:.95rem;outline:none;background:#fff;transition:border-color .3s}
.search-bar input:focus{border-color:#2e7d32}
.search-bar button{padding:10px 24px;background:#2e7d32;color:#fff;border:none;border-radius:25px;cursor:pointer;font-size:.95rem;transition:background .3s}
.search-bar button:hover{background:#1b5e20}

/* Banner */
.hero-banner{position:relative;height:520px;overflow:hidden;background:#1b5e20}
.hero-banner img{width:100%;height:100%;object-fit:cover;opacity:.7}
.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,rgba(27,94,32,.3) 0%,rgba(27,94,32,.7) 100%)}
.hero-content{text-align:center;color:#fff;max-width:750px;padding:0 20px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,.3);line-height:1.3}
.hero-content p{font-size:1.15rem;line-height:1.8;text-shadow:0 1px 4px rgba(0,0,0,.2);margin-bottom:20px}
.hero-btn{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#c8a951,#daa520);color:#1b5e20;font-weight:700;border-radius:30px;font-size:1.05rem;transition:transform .3s,box-shadow .3s}
.hero-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(200,169,81,.4);color:#1b5e20}

/* 面包屑 */
.breadcrumb{padding:12px 0;font-size:.85rem;color:#666}
.breadcrumb a{color:#2e7d32}
.breadcrumb span{margin:0 6px;color:#999}

/* 区块通用 */
.section{padding:60px 0}
.section-alt{background:#f0f7f0}
.section-dark{background:linear-gradient(135deg,#1b5e20,#2e7d32);color:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:#1b5e20;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#c8a951,#2e7d32);margin:10px auto 0}
.section-dark .section-title h2{color:#fff}
.section-dark .section-title h2::after{background:linear-gradient(90deg,#c8a951,#a5d6a7)}
.section-title p{color:#666;font-size:1rem;max-width:600px;margin:0 auto}
.section-dark .section-title p{color:rgba(255,255,255,.8)}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);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 12px 32px rgba(0,0,0,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#e8f5e9}
.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(1.05)}
.video-thumb video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;display:none}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:64px;height:64px;background:rgba(46,125,50,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s,transform .3s;cursor:pointer}
.play-btn::after{content:'';display:block;width:0;height:0;border-style:solid;border-width:12px 0 12px 22px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-card:hover .play-btn{opacity:1;transform:translate(-50%,-50%) scale(1.1)}
.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-date{position:absolute;bottom:8px;left:8px;background:rgba(46,125,50,.8);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:16px}
.video-info h3{font-size:1.05rem;margin-bottom:8px;color:#1b5e20;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:.8rem;color:#888}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.video-tags span{background:#e8f5e9;color:#2e7d32;padding:2px 10px;border-radius:12px;font-size:.75rem}

/* 分类标签导航 */
.category-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:30px}
.category-tabs a{padding:8px 20px;background:#e8f5e9;color:#2e7d32;border-radius:20px;font-size:.9rem;transition:all .3s}
.category-tabs a:hover,.category-tabs a.active{background:#2e7d32;color:#fff}

/* AI赋能区 */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:#fff;border-radius:12px;padding:30px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:transform .3s}
.ai-card:hover{transform:translateY(-4px)}
.ai-card .icon{width:64px;height:64px;background:linear-gradient(135deg,#2e7d32,#66bb6a);border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.8rem;color:#fff}
.ai-card h4{color:#1b5e20;margin-bottom:8px;font-size:1.1rem}
.ai-card p{color:#666;font-size:.9rem;line-height:1.6}

/* 社区模块 */
.community-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.community-item{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 12px rgba(0,0,0,.06);transition:transform .3s}
.community-item:hover{transform:translateY(-4px)}
.community-item img{width:100%;height:180px;object-fit:cover}
.community-item .info{padding:14px}
.community-item h4{color:#1b5e20;font-size:1rem;margin-bottom:6px}
.community-item p{color:#666;font-size:.85rem;line-height:1.5}

/* 专家展示 */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:100%;height:240px;object-fit:cover}
.expert-card .info{padding:20px}
.expert-card h4{color:#1b5e20;font-size:1.1rem;margin-bottom:4px}
.expert-card .role{color:#c8a951;font-size:.85rem;margin-bottom:8px}
.expert-card p{color:#666;font-size:.85rem;line-height:1.5}
.expert-card .btn-group{display:flex;gap:8px;justify-content:center;margin-top:12px}
.expert-card .btn-sm{padding:6px 16px;border-radius:20px;font-size:.8rem;border:1px solid #2e7d32;color:#2e7d32;transition:all .3s}
.expert-card .btn-sm:hover{background:#2e7d32;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-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#1b5e20;font-size:1rem;transition:background .3s}
.faq-question:hover{background:#f0f7f0}
.faq-question::after{content:'+';font-size:1.4rem;color:#c8a951;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 18px}
.faq-answer p{color:#555;font-size:.95rem;line-height:1.7}

/* 用户评价 */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 12px rgba(0,0,0,.06)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#2e7d32,#66bb6a);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-name{font-weight:600;color:#1b5e20}
.review-date{font-size:.8rem;color:#999}
.review-stars{color:#c8a951;margin-bottom:8px;font-size:1.1rem}
.review-text{color:#555;font-size:.95rem;line-height:1.7}

/* 合作伙伴 */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall .partner{background:#fff;padding:16px 28px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.06);font-weight:600;color:#1b5e20;font-size:1rem;transition:transform .3s}
.partner-wall .partner:hover{transform:scale(1.05)}

/* How-To */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:900px;margin:0 auto}
.howto-step{text-align:center;padding:24px;background:#fff;border-radius:12px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.howto-step .num{width:48px;height:48px;background:linear-gradient(135deg,#c8a951,#daa520);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.2rem;margin:0 auto 12px}
.howto-step h4{color:#1b5e20;margin-bottom:6px}
.howto-step p{color:#666;font-size:.85rem}

/* 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 4px 12px rgba(0,0,0,.06)}
.contact-card h4{color:#1b5e20;margin-bottom:16px;font-size:1.15rem;border-bottom:2px solid #e8f5e9;padding-bottom:8px}
.contact-card p{color:#555;margin-bottom:8px;font-size:.95rem}
.contact-card .qr-wrap{display:flex;gap:20px;margin-top:12px}
.contact-card .qr-wrap img{width:120px;height:120px;border-radius:8px}

/* 社交分享 */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.share-bar a{display:flex;align-items:center;gap:6px;padding:10px 20px;border-radius:25px;color:#fff;font-size:.9rem;transition:transform .3s}
.share-bar a:hover{transform:translateY(-2px);color:#fff}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#00a1d6}

/* 页脚 */
.site-footer{background:linear-gradient(135deg,#0d3311,#1b5e20);color:rgba(255,255,255,.8);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:40px}
.footer-col h4{color:#c8a951;margin-bottom:16px;font-size:1.05rem}
.footer-col p,.footer-col a{color:rgba(255,255,255,.7);font-size:.9rem;line-height:2}
.footer-col a:hover{color:#c8a951}
.footer-col ul{list-style:none}
.footer-col ul li a{display:block}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo img{height:36px}
.footer-logo span{color:#fff;font-weight:700;font-size:1.15rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding:20px 0;text-align:center;font-size:.85rem;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.6)}

/* 干扰标签容器 - 不影响布局 */
.noise-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none}

/* 内页通用 */
.page-header{background:linear-gradient(135deg,#1b5e20,#2e7d32);padding:50px 0;text-align:center;color:#fff}
.page-header h1{font-size:2.2rem;margin-bottom:10px}
.page-header p{font-size:1rem;opacity:.85;max-width:600px;margin:0 auto}
.page-content{padding:50px 0}

/* 响应式 */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .ai-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .community-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-menu{display:none;position:absolute;top:68px;left:0;right:0;background:#1b5e20;flex-direction:column;padding:20px;gap:4px;box-shadow:0 4px 12px rgba(0,0,0,.2)}
  .nav-menu.active{display:flex}
  .mobile-toggle{display:block}
  .hero-banner{height:380px}
  .hero-content h1{font-size:1.8rem}
  .hero-content p{font-size:.95rem}
  .video-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .section{padding:40px 0}
  .section-title h2{font-size:1.6rem}
}
@media(max-width:480px){
  .community-grid{grid-template-columns:1fr}
  .hero-banner{height:300px}
  .hero-content h1{font-size:1.5rem}
  .nav-logo span{font-size:1rem}
}