/* ============================================
   抖阴 - 植物视频社区 全站样式表
   域名: lbeyg74.cn
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;line-height:1.8;color:#333;background:#f9faf8}
a{color:#2d7d32;text-decoration:none;transition:color .3s}
a:hover{color:#1b5e20}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.4;color:#1a1a1a}

/* === 容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:#2d7d32;margin-bottom:10px}
.section-title p{font-size:1.1rem;color:#666;max-width:700px;margin:0 auto}

/* === 头部导航 === */
.site-header{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{width:48px;height:48px;border-radius:8px}
.logo-wrap .brand-name{font-size:1.4rem;font-weight:800;color:#2d7d32}
.logo-wrap .brand-sub{font-size:.75rem;color:#888;display:block}
.main-nav{display:flex;gap:6px}
.main-nav a{padding:8px 16px;border-radius:6px;font-size:.95rem;color:#444;font-weight:500;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:#e8f5e9;color:#2d7d32}
.mobile-menu-btn{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:#333}

/* === 搜索框 === */
.search-bar{background:#e8f5e9;padding:12px 0;border-bottom:1px solid #c8e6c9}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 16px;border:2px solid #a5d6a7;border-right:none;border-radius:25px 0 0 25px;font-size:1rem;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#2d7d32}
.search-box button{padding:10px 24px;background:#2d7d32;color:#fff;border:none;border-radius:0 25px 25px 0;font-size:1rem;cursor:pointer;transition:background .3s}
.search-box button:hover{background:#1b5e20}

/* === Banner === */
.hero-banner{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-banner .banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.65)}
.hero-banner .banner-content{position:relative;z-index:2;text-align:center;color:#fff;padding:20px}
.hero-banner h1{font-size:2.8rem;text-shadow:2px 2px 8px rgba(0,0,0,.5);margin-bottom:16px}
.hero-banner .hero-desc{font-size:1.2rem;max-width:700px;margin:0 auto 24px;text-shadow:1px 1px 4px rgba(0,0,0,.4);line-height:1.8}
.hero-banner .hero-btn{display:inline-block;padding:14px 36px;background:#2d7d32;color:#fff;border-radius:30px;font-size:1.1rem;font-weight:600;transition:all .3s;box-shadow:0 4px 15px rgba(45,125,50,.4)}
.hero-banner .hero-btn:hover{background:#1b5e20;transform:translateY(-2px)}

/* === 视频卡片 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s}
.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;cursor:pointer}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:64px;height:64px;background:rgba(45,125,50,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.play-btn::after{content:"";border-left:22px solid #fff;border-top:13px solid transparent;border-bottom:13px solid transparent;margin-left:4px}
.video-card:hover .play-btn{opacity:1}
.video-info{padding:16px}
.video-info h3{font-size:1.05rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:16px;color:#999;font-size:.85rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:2px 10px;background:#e8f5e9;color:#2d7d32;border-radius:12px;font-size:.8rem;margin-top:8px}

/* === 模块卡片 === */
.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.module-card{background:#fff;border-radius:12px;padding:30px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.06);transition:all .3s;border:1px solid #e8f5e9}
.module-card:hover{transform:translateY(-4px);box-shadow:0 8px 25px rgba(0,0,0,.12);border-color:#a5d6a7}
.module-card .icon{font-size:2.5rem;margin-bottom:16px}
.module-card h3{font-size:1.15rem;color:#2d7d32;margin-bottom:10px}
.module-card p{color:#666;font-size:.95rem;line-height:1.7}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:100%;height:220px;object-fit:cover}
.expert-card .expert-info{padding:20px}
.expert-card h3{font-size:1.1rem;margin-bottom:6px}
.expert-card .role{color:#2d7d32;font-size:.9rem;margin-bottom:10px}
.expert-card p{color:#666;font-size:.9rem;line-height:1.7}
.expert-card .expert-btn{display:inline-block;margin-top:12px;padding:8px 20px;background:#e8f5e9;color:#2d7d32;border-radius:20px;font-size:.85rem;transition:all .3s}
.expert-card .expert-btn:hover{background:#2d7d32;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 24px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-item .faq-q:hover{background:#f1f8e9}
.faq-item .faq-q::after{content:"+";font-size:1.4rem;color:#2d7d32;transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:#555;line-height:1.8}
.faq-item.active .faq-a{padding:0 24px 18px;max-height:500px}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 15px rgba(0,0,0,.06);border-left:4px solid #2d7d32}
.review-card .stars{color:#f9a825;font-size:1.1rem;margin-bottom:10px}
.review-card .review-text{color:#555;font-size:.95rem;line-height:1.8;margin-bottom:12px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer .avatar{width:40px;height:40px;border-radius:50%;background:#e8f5e9;display:flex;align-items:center;justify-content:center;color:#2d7d32;font-weight:700}
.review-card .reviewer .name{font-weight:600;font-size:.9rem}
.review-card .reviewer .date{color:#999;font-size:.8rem}

/* === 合作品牌 === */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center;padding:20px 0}
.brand-wall .brand-item{padding:15px 25px;background:#fff;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.06);font-size:1rem;color:#555;font-weight:600;transition:all .3s}
.brand-wall .brand-item:hover{box-shadow:0 4px 15px rgba(0,0,0,.12);color:#2d7d32}

/* === 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;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.06)}
.contact-card .contact-icon{font-size:2rem;margin-bottom:12px}
.contact-card h4{color:#2d7d32;margin-bottom:8px}
.contact-card p{color:#666;font-size:.9rem}

/* === 社交分享 === */
.share-bar{display:flex;justify-content:center;gap:16px;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:25px;color:#fff;font-size:.9rem;transition:all .3s;cursor:pointer}
.share-btn:hover{transform:translateY(-2px);opacity:.9}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin-share{background:#000}
.share-btn.bilibili{background:#00a1d6}

/* === 页脚 === */
.site-footer{background:#1a2e1a;color:#ccc;padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:#a5d6a7;margin-bottom:16px;font-size:1.05rem}
.footer-col p,.footer-col a{color:#aaa;font-size:.9rem;line-height:2}
.footer-col a:hover{color:#a5d6a7}
.footer-qr{display:flex;gap:20px;margin-top:12px}
.footer-qr img{width:120px;height:120px;border-radius:8px;border:2px solid #2d5a2d}
.footer-bottom{border-top:1px solid #2d5a2d;padding-top:20px;text-align:center;font-size:.85rem;color:#777}
.footer-bottom a{color:#a5d6a7}

/* === 面包屑 === */
.breadcrumb{padding:12px 0;font-size:.9rem;color:#888}
.breadcrumb a{color:#2d7d32}
.breadcrumb span{margin:0 8px;color:#ccc}

/* === 内页头部 === */
.page-hero{background:linear-gradient(135deg,#1a3a1a 0%,#2d7d32 100%);color:#fff;padding:60px 0;text-align:center}
.page-hero h1{font-size:2.2rem;margin-bottom:12px;color:#fff}
.page-hero p{font-size:1.1rem;opacity:.9;max-width:600px;margin:0 auto}

/* === 内容区 === */
.content-section{padding:50px 0}
.content-section h2{font-size:1.6rem;color:#2d7d32;margin-bottom:20px}
.content-section h3{font-size:1.3rem;color:#333;margin-bottom:14px}
.content-section p{margin-bottom:16px;color:#555;line-height:1.9}
.content-section img{border-radius:12px;margin:20px 0;box-shadow:0 4px 15px rgba(0,0,0,.1)}

/* === How-To指南 === */
.howto-steps{counter-reset:step}
.howto-step{display:flex;gap:20px;margin-bottom:24px;align-items:flex-start}
.howto-step::before{counter-increment:step;content:counter(step);min-width:48px;height:48px;background:#2d7d32;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700}
.howto-step .step-content h4{color:#2d7d32;margin-bottom:6px}
.howto-step .step-content p{color:#666}

/* === 标签云 === */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:20px 0}
.tag-cloud a{padding:6px 16px;background:#e8f5e9;color:#2d7d32;border-radius:20px;font-size:.85rem;transition:all .3s}
.tag-cloud a:hover{background:#2d7d32;color:#fff}

/* === 干扰标签隐藏 === */
.noise-wrap{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;opacity:0;pointer-events:none}

/* === 懒加载 === */
img[loading="lazy"]{opacity:0;transition:opacity .5s}
img[loading="lazy"].loaded,img.loaded{opacity:1}

/* === 响应式 === */
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;width:100%;flex-direction:column;padding:10px 0}
  .main-nav.show{display:flex}
  .mobile-menu-btn{display:block}
  .hero-banner{height:380px}
  .hero-banner h1{font-size:1.8rem}
  .hero-banner .hero-desc{font-size:1rem}
  .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:40px 0}
  .section-title h2{font-size:1.5rem}
}
@media(max-width:480px){
  .hero-banner{height:300px}
  .hero-banner h1{font-size:1.4rem}
  .search-box input{padding:8px 12px;font-size:.9rem}
  .search-box button{padding:8px 16px;font-size:.9rem}
}

/* === AI模块布局 === */
.ai-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}

@media(max-width:768px){
  .ai-grid{grid-template-columns:1fr}
  .share-bar{flex-wrap:wrap}
  .footer-qr{flex-wrap:wrap;justify-content:center}
  .brand-wall{gap:15px}
  .brand-wall .brand-item{padding:10px 15px;font-size:.9rem}
}