/* ===== 抖阴植物视频社区 - 全站样式 ===== */
/* 品牌色: #2d8f4e 深绿 | #7ec850 亮绿 | #1a5c32 墨绿 | #f0f9f0 浅绿背景 */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#333;background:#fff;line-height:1.8;overflow-x:hidden}
a{color:#2d8f4e;text-decoration:none;transition:color .3s}
a:hover{color:#1a5c32}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 15px}

/* 干扰标签隐藏 */
.noise-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}

/* ===== 头部导航 ===== */
.site-header{background:#1a5c32;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 15px;max-width:1200px;margin:0 auto}
.logo-area{display:flex;align-items:center;gap:10px}
.logo-area img{width:48px;height:48px;border-radius:8px}
.logo-area h1{color:#fff;font-size:1.4rem;font-weight:700}
.logo-area h1 span{color:#7ec850}
.main-nav{display:flex;gap:0}
.main-nav a{color:#fff;padding:10px 14px;font-size:.95rem;transition:background .3s;border-radius:4px}
.main-nav a:hover,.main-nav a.active{background:rgba(126,200,80,.3);color:#7ec850}

/* 搜索框 */
.search-bar{background:#f0f9f0;padding:12px 0;border-bottom:1px solid #d4ecd4}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;width:100%;max-width:600px}
.search-box input{flex:1;padding:10px 16px;border:2px solid #2d8f4e;border-right:none;border-radius:25px 0 0 25px;font-size:.95rem;outline:none;background:#fff}
.search-box input:focus{border-color:#1a5c32;box-shadow:0 0 5px rgba(45,143,78,.3)}
.search-box button{padding:10px 24px;background:#2d8f4e;color:#fff;border:2px solid #2d8f4e;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;transition:background .3s}
.search-box button:hover{background:#1a5c32}

/* ===== Banner ===== */
.hero-banner{position:relative;height:500px;overflow:hidden;background:#1a5c32}
.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;padding:20px;background:linear-gradient(to bottom,rgba(26,92,50,.4),rgba(26,92,50,.7))}
.hero-overlay h2{color:#fff;font-size:2.8rem;margin-bottom:15px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.hero-overlay h2 span{color:#7ec850}
.hero-overlay p{color:#e0f0e0;font-size:1.2rem;max-width:700px;line-height:1.8}
.hero-overlay .hero-tags{margin-top:20px;display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.hero-overlay .hero-tags span{background:rgba(126,200,80,.25);color:#fff;padding:6px 16px;border-radius:20px;font-size:.85rem;border:1px solid rgba(126,200,80,.5)}

/* ===== 面包屑 ===== */
.breadcrumb{padding:12px 0;font-size:.85rem;color:#666}
.breadcrumb a{color:#2d8f4e}
.breadcrumb span{margin:0 6px;color:#999}

/* ===== 通用模块 ===== */
.section{padding:50px 0}
.section-alt{background:#f0f9f0}
.section-title{text-align:center;margin-bottom:35px}
.section-title h2{font-size:2rem;color:#1a5c32;margin-bottom:8px}
.section-title h3{font-size:1.5rem;color:#1a5c32;margin-bottom:8px}
.section-title p{color:#666;font-size:1rem}

/* ===== 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 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(45,143,78,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#e0e0e0}
.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-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(45,143,78,.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:"";border-style:solid;border-width:12px 0 12px 22px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-info{padding:14px 16px}
.video-info h4{font-size:1rem;color:#1a5c32;margin-bottom:6px;line-height:1.4}
.video-info .video-meta{display:flex;gap:12px;font-size:.8rem;color:#888}
.video-info .video-meta span{display:flex;align-items:center;gap:3px}
.video-tag{display:inline-block;background:#e8f5e9;color:#2d8f4e;padding:2px 10px;border-radius:10px;font-size:.75rem;margin-top:6px}

/* ===== 专家展示 ===== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:12px;padding:24px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:transform .3s}
.expert-card:hover{transform:translateY(-3px)}
.expert-card img{width:100px;height:100px;border-radius:50%;margin:0 auto 15px;object-fit:cover;border:3px solid #7ec850}
.expert-card h4{color:#1a5c32;font-size:1.1rem;margin-bottom:4px}
.expert-card .expert-role{color:#2d8f4e;font-size:.85rem;margin-bottom:10px}
.expert-card p{font-size:.9rem;color:#666;line-height:1.6}
.expert-card .expert-btn{display:inline-block;margin-top:12px;padding:8px 20px;background:#2d8f4e;color:#fff;border-radius:20px;font-size:.85rem;transition:background .3s}
.expert-card .expert-btn:hover{background:#1a5c32;color:#fff}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid #d4ecd4;border-radius:8px;margin-bottom:12px;overflow:hidden}
.faq-question{padding:16px 20px;background:#f0f9f0;cursor:pointer;font-weight:600;color:#1a5c32;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-question:hover{background:#e0f0e0}
.faq-question::after{content:"+";font-size:1.3rem;color:#2d8f4e;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;color:#555;line-height:1.8}
.faq-item.active .faq-answer{max-height:300px;padding:16px 20px}

/* ===== 用户评论 ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#fff;border-radius:12px;padding:20px;box-shadow:0 4px 15px rgba(0,0,0,.06);border-left:4px solid #7ec850}
.review-card .review-header{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.review-card .review-avatar{width:40px;height:40px;border-radius:50%;background:#e8f5e9;display:flex;align-items:center;justify-content:center;color:#2d8f4e;font-weight:700;font-size:1.1rem}
.review-card .review-name{font-weight:600;color:#1a5c32}
.review-card .review-stars{color:#f5a623;font-size:.9rem}
.review-card .review-text{color:#555;font-size:.9rem;line-height:1.7}
.review-card .review-date{color:#aaa;font-size:.8rem;margin-top:8px}

/* ===== 合作品牌 ===== */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.brand-wall .brand-item{width:120px;height:60px;background:#f0f9f0;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#2d8f4e;font-size:.9rem;border:1px solid #d4ecd4}

/* ===== How-To 指南 ===== */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px;max-width:900px;margin:0 auto}
.howto-step{text-align:center;padding:24px;background:#fff;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.06)}
.howto-step .step-num{width:50px;height:50px;border-radius:50%;background:#2d8f4e;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;margin:0 auto 12px}
.howto-step h5{color:#1a5c32;margin-bottom:8px;font-size:1rem}
.howto-step p{color:#666;font-size:.9rem}

/* ===== 联系我们 ===== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.contact-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 15px rgba(0,0,0,.06);text-align:center}
.contact-card h5{color:#1a5c32;margin-bottom:10px;font-size:1.1rem}
.contact-card p{color:#555;font-size:.9rem;line-height:1.7}
.contact-card img{max-width:160px;margin:10px auto}

/* ===== 社交分享 ===== */
.share-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;color:#fff;font-size:.85rem;transition:opacity .3s;cursor:pointer}
.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:#1a5c32;color:#cde6cd;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:30px;margin-bottom:30px}
.footer-col h5{color:#7ec850;margin-bottom:12px;font-size:1rem}
.footer-col p,.footer-col a{color:#b0d8b0;font-size:.9rem;line-height:1.8}
.footer-col a:hover{color:#fff}
.footer-col img{max-width:120px;border-radius:8px;margin-top:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:20px;text-align:center;font-size:.85rem;color:#8cb88c}
.footer-bottom a{color:#7ec850}

/* ===== 内页内容 ===== */
.page-content{padding:40px 0;min-height:60vh}
.page-content h2{color:#1a5c32;font-size:1.8rem;margin-bottom:20px}
.page-content h3{color:#2d8f4e;font-size:1.4rem;margin:25px 0 12px}
.page-content p{color:#444;line-height:1.9;margin-bottom:15px}
.page-content .content-img{border-radius:12px;margin:20px 0;box-shadow:0 4px 15px rgba(0,0,0,.1)}

/* ===== 移动端适配 ===== */
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:5px}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#1a5c32;flex-direction:column;padding:10px 0;box-shadow:0 4px 10px rgba(0,0,0,.2)}
  .main-nav.show{display:flex}
  .main-nav a{padding:12px 20px;border-bottom:1px solid rgba(255,255,255,.1)}
  .mobile-menu-btn{display:block}
  .hero-banner{height:350px}
  .hero-overlay h2{font-size:1.8rem}
  .hero-overlay p{font-size:1rem}
  .section{padding:30px 0}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
  .header-inner{flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .hero-banner{height:280px}
  .hero-overlay h2{font-size:1.4rem}
  .video-grid{grid-template-columns:1fr}
  .search-box{flex-direction:row}
}

/* ===== 懒加载占位 ===== */
img[loading="lazy"]{background:#f0f9f0;min-height:100px}

/* ===== 动画 ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeInUp .6s ease forwards}