/* =====================================================
   抖阴 - wz257135.cn 主样式表
   植物视频社区 | 百度SEO优化
   ===================================================== */

/* ---- 变量 ---- */
:root {
  --primary: #1a6b3a;
  --primary-dark: #0f4525;
  --primary-light: #2d9e5c;
  --accent: #f5a623;
  --accent2: #e8c84a;
  --bg: #f4f9f1;
  --bg2: #eaf4e2;
  --text: #1a2e1a;
  --text2: #4a6a4a;
  --white: #ffffff;
  --border: #c8e0c8;
  --shadow: 0 4px 20px rgba(26,107,58,0.12);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: 0.3s ease;
  --font: 'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;
}

/* ---- 重置 ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-light)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:var(--font)}

/* ---- 干扰标签隐藏 ---- */
.dy-noise{display:none!important;visibility:hidden!important;position:absolute!important;width:0!important;height:0!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;pointer-events:none!important;z-index:-9999!important}

/* ---- 布局 ---- */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-alt{background:var(--bg2)}
.row{display:flex;flex-wrap:wrap;gap:24px}
.col-2{flex:0 0 calc(50% - 12px)}
.col-3{flex:0 0 calc(33.333% - 16px)}
.col-4{flex:0 0 calc(25% - 18px)}

/* ---- 标题 ---- */
.section-title{font-size:2rem;font-weight:700;color:var(--primary-dark);margin-bottom:8px;text-align:center}
.section-subtitle{font-size:1rem;color:var(--text2);text-align:center;margin-bottom:40px}
.section-title span{color:var(--accent)}

/* ---- 导航 ---- */
.site-header{background:var(--white);box-shadow:0 2px 12px rgba(26,107,58,0.1);position:sticky;top:0;z-index:1000}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.site-logo{display:flex;align-items:center;gap:10px;font-size:1.5rem;font-weight:800;color:var(--primary-dark)}
.site-logo img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.site-logo span{color:var(--accent)}
.site-nav{display:flex;align-items:center;gap:4px}
.site-nav a{padding:8px 14px;border-radius:var(--radius-sm);font-size:0.92rem;font-weight:500;color:var(--text);transition:all var(--transition)}
.site-nav a:hover,.site-nav a.active{background:var(--primary);color:var(--white)}
.nav-search{display:flex;align-items:center;gap:8px}
.nav-search input{border:1.5px solid var(--border);border-radius:20px;padding:7px 16px;font-size:0.9rem;width:200px;outline:none;transition:border var(--transition);font-family:var(--font)}
.nav-search input:focus{border-color:var(--primary)}
.nav-search button{background:var(--primary);color:var(--white);border-radius:20px;padding:7px 18px;font-size:0.9rem;transition:background var(--transition)}
.nav-search button:hover{background:var(--primary-light)}
.nav-mobile-btn{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-mobile-btn span{display:block;width:24px;height:2px;background:var(--primary);border-radius:2px;transition:all var(--transition)}

/* ---- 搜索栏（导航下方） ---- */
.search-bar{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:14px 0}
.search-bar-inner{display:flex;align-items:center;justify-content:center;gap:12px}
.search-bar-inner h2{color:var(--white);font-size:1rem;font-weight:600;white-space:nowrap}
.search-bar-form{display:flex;gap:0;border-radius:30px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,0.2);width:100%;max-width:600px}
.search-bar-form input{flex:1;padding:12px 20px;font-size:1rem;border:none;outline:none;font-family:var(--font)}
.search-bar-form button{background:var(--accent);color:var(--primary-dark);padding:12px 28px;font-size:1rem;font-weight:700;transition:background var(--transition);white-space:nowrap}
.search-bar-form button:hover{background:var(--accent2)}

/* ---- Hero Banner ---- */
.hero-banner{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;background:var(--primary-dark)}
.hero-bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;opacity:0.55}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,40,20,0.82) 0%,rgba(26,107,58,0.45) 100%);z-index:1}
.hero-content{position:relative;z-index:2;max-width:700px;padding:60px 20px 60px 40px}
.hero-content h1{font-size:2.8rem;font-weight:900;color:var(--white);line-height:1.2;margin-bottom:12px;text-shadow:0 2px 12px rgba(0,0,0,0.4)}
.hero-content h1 span{color:var(--accent2)}
.hero-subtitle{font-size:1.3rem;color:var(--accent2);font-weight:600;margin-bottom:16px}
.hero-desc{font-size:1rem;color:rgba(255,255,255,0.88);margin-bottom:28px;line-height:1.8}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{background:var(--accent);color:var(--primary-dark);padding:13px 32px;border-radius:30px;font-size:1rem;font-weight:700;transition:all var(--transition);box-shadow:0 4px 16px rgba(245,166,35,0.4)}
.btn-primary:hover{background:var(--accent2);transform:translateY(-2px);color:var(--primary-dark)}
.btn-outline{border:2px solid var(--white);color:var(--white);padding:11px 28px;border-radius:30px;font-size:1rem;font-weight:600;transition:all var(--transition)}
.btn-outline:hover{background:var(--white);color:var(--primary-dark)}
.hero-stats{display:flex;gap:32px;margin-top:32px}
.hero-stat{text-align:center}
.hero-stat .num{font-size:2rem;font-weight:800;color:var(--accent2)}
.hero-stat .label{font-size:0.85rem;color:rgba(255,255,255,0.75)}

/* ---- 视频卡片 ---- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform var(--transition),box-shadow var(--transition);cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(26,107,58,0.2)}
.video-thumb{position:relative;aspect-ratio:16/9;background:#1a2e1a;overflow:hidden}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.video-play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition);background:rgba(0,0,0,0.35)}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn svg{width:56px;height:56px;filter:drop-shadow(0 2px 8px rgba(0,0,0,0.5))}
.video-badge{position:absolute;top:8px;left:8px;background:var(--accent);color:var(--primary-dark);font-size:0.72rem;font-weight:700;padding:3px 8px;border-radius:4px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.7);color:#fff;font-size:0.78rem;padding:2px 7px;border-radius:4px}
.video-info{padding:14px}
.video-title{font-size:0.95rem;font-weight:600;color:var(--text);margin-bottom:8px;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;align-items:center;font-size:0.8rem;color:var(--text2)}
.video-meta .views{display:flex;align-items:center;gap:4px}
.video-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}
.video-tag{background:var(--bg2);color:var(--primary);font-size:0.72rem;padding:2px 8px;border-radius:10px;border:1px solid var(--border)}

/* ---- Tab 切换 ---- */
.tab-nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px;border-bottom:2px solid var(--border);padding-bottom:0}
.tab-btn{padding:10px 22px;font-size:0.95rem;font-weight:600;color:var(--text2);border-radius:var(--radius-sm) var(--radius-sm) 0 0;transition:all var(--transition);border-bottom:3px solid transparent;margin-bottom:-2px}
.tab-btn.active,.tab-btn:hover{color:var(--primary);border-bottom-color:var(--primary);background:var(--bg2)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ---- 模块卡片 ---- */
.feature-card{background:var(--white);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);transition:transform var(--transition)}
.feature-card:hover{transform:translateY(-4px)}
.feature-icon{width:56px;height:56px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feature-icon svg{width:28px;height:28px;fill:var(--white)}
.feature-card h3{font-size:1.05rem;font-weight:700;color:var(--primary-dark);margin-bottom:8px}
.feature-card p{font-size:0.9rem;color:var(--text2);line-height:1.6}

/* ---- 专家卡片 ---- */
.expert-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);text-align:center;transition:transform var(--transition)}
.expert-card:hover{transform:translateY(-5px)}
.expert-avatar{width:100%;aspect-ratio:1;object-fit:cover}
.expert-info{padding:20px}
.expert-name{font-size:1.05rem;font-weight:700;color:var(--primary-dark)}
.expert-title{font-size:0.85rem;color:var(--text2);margin:4px 0 12px}
.expert-tags{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;margin-bottom:12px}
.expert-tag{background:var(--bg2);color:var(--primary);font-size:0.75rem;padding:3px 10px;border-radius:10px}
.expert-btns{display:flex;gap:8px;justify-content:center}
.btn-sm{padding:7px 16px;border-radius:20px;font-size:0.82rem;font-weight:600;transition:all var(--transition)}
.btn-sm-primary{background:var(--primary);color:var(--white)}
.btn-sm-primary:hover{background:var(--primary-light);color:var(--white)}
.btn-sm-outline{border:1.5px solid var(--primary);color:var(--primary)}
.btn-sm-outline:hover{background:var(--primary);color:var(--white)}

/* ---- FAQ ---- */
.faq-item{background:var(--white);border-radius:var(--radius);margin-bottom:12px;box-shadow:0 2px 8px rgba(26,107,58,0.07);overflow:hidden}
.faq-question{padding:18px 24px;font-size:1rem;font-weight:600;color:var(--primary-dark);cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background var(--transition)}
.faq-question:hover{background:var(--bg2)}
.faq-question.open{background:var(--primary);color:var(--white)}
.faq-question .faq-icon{font-size:1.2rem;transition:transform var(--transition);flex-shrink:0}
.faq-question.open .faq-icon{transform:rotate(45deg)}
.faq-answer{display:none;padding:16px 24px;font-size:0.93rem;color:var(--text2);line-height:1.8;border-top:1px solid var(--border)}
.faq-answer.open{display:block}

/* ---- 用户评论 ---- */
.review-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.review-card{background:var(--white);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:1rem;flex-shrink:0}
.review-name{font-weight:600;font-size:0.95rem;color:var(--text)}
.review-stars{color:var(--accent);font-size:0.9rem}
.review-text{font-size:0.88rem;color:var(--text2);line-height:1.7}
.review-date{font-size:0.78rem;color:#aaa;margin-top:8px}

/* ---- 合作品牌 ---- */
.partner-grid{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center}
.partner-item{background:var(--white);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:14px 24px;font-size:0.9rem;font-weight:600;color:var(--text2);transition:all var(--transition)}
.partner-item:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}

/* ---- 联系我们 ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.contact-card{background:var(--white);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.contact-card h3{font-size:1.1rem;font-weight:700;color:var(--primary-dark);margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--border)}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;font-size:0.9rem;color:var(--text2)}
.contact-icon{width:32px;height:32px;background:var(--bg2);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--primary);font-size:1rem}
.qr-grid{display:flex;gap:20px;flex-wrap:wrap}
.qr-item{text-align:center}
.qr-code{width:100px;height:100px;background:var(--bg2);border-radius:8px;display:flex;align-items:center;justify-content:center;margin:0 auto 6px;border:2px solid var(--border);font-size:0.7rem;color:var(--text2);padding:4px}
.qr-label{font-size:0.8rem;color:var(--text2)}

/* ---- 社交分享 ---- */
.share-bar{background:var(--primary-dark);padding:20px 0}
.share-inner{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
.share-label{color:var(--white);font-size:0.95rem;font-weight:600}
.share-btn{display:flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:0.88rem;font-weight:600;transition:all var(--transition);color:var(--white)}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#000}
.share-bilibili{background:#00a1d6}
.share-btn:hover{opacity:0.85;transform:translateY(-2px);color:var(--white)}

/* ---- 面包屑 ---- */
.breadcrumb{padding:12px 0;font-size:0.88rem;color:var(--text2)}
.breadcrumb a{color:var(--primary)}
.breadcrumb span{margin:0 6px;color:#ccc}

/* ---- 页脚 ---- */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,0.8);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.footer-brand .logo-text{font-size:1.4rem;font-weight:800;color:var(--white);margin-bottom:10px}
.footer-brand .logo-text span{color:var(--accent2)}
.footer-brand p{font-size:0.88rem;line-height:1.7;margin-bottom:16px}
.footer-col h4{font-size:1rem;font-weight:700;color:var(--white);margin-bottom:14px}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:0.88rem;color:rgba(255,255,255,0.7);transition:color var(--transition)}
.footer-col ul li a:hover{color:var(--accent2)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:18px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:0.83rem;color:rgba(255,255,255,0.5)}
.footer-bottom a{color:rgba(255,255,255,0.6)}
.footer-bottom a:hover{color:var(--accent2)}
.update-time{color:var(--accent2);font-size:0.82rem}

/* ---- 内页通用 ---- */
.page-hero{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:50px 0;text-align:center}
.page-hero h1{font-size:2.2rem;font-weight:800;color:var(--white);margin-bottom:8px}
.page-hero p{font-size:1rem;color:rgba(255,255,255,0.8)}

/* ---- AI模块 ---- */
.ai-card{background:linear-gradient(135deg,var(--primary-dark),#0d3d24);border-radius:var(--radius);padding:28px;color:var(--white);position:relative;overflow:hidden}
.ai-card::before{content:'AI';position:absolute;right:-10px;top:-10px;font-size:6rem;font-weight:900;color:rgba(255,255,255,0.05)}
.ai-card h3{font-size:1.1rem;font-weight:700;margin-bottom:10px;color:var(--accent2)}
.ai-card p{font-size:0.9rem;line-height:1.7;color:rgba(255,255,255,0.8)}
.ai-badge{display:inline-block;background:var(--accent);color:var(--primary-dark);font-size:0.75rem;font-weight:700;padding:3px 10px;border-radius:10px;margin-bottom:10px}

/* ---- 统计数字 ---- */
.stats-bar{background:var(--primary);padding:30px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item .num{font-size:2.2rem;font-weight:800;color:var(--accent2)}
.stat-item .label{font-size:0.88rem;color:rgba(255,255,255,0.8);margin-top:4px}

/* ---- 视频模态框 ---- */
.video-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.85);z-index:9999;align-items:center;justify-content:center}
.video-modal.open{display:flex}
.video-modal-inner{background:#000;border-radius:var(--radius);overflow:hidden;width:90%;max-width:800px;position:relative}
.video-modal-close{position:absolute;top:12px;right:12px;background:rgba(255,255,255,0.2);color:#fff;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;cursor:pointer;z-index:10;transition:background var(--transition)}
.video-modal-close:hover{background:rgba(255,255,255,0.4)}
.video-modal video,.video-modal iframe{width:100%;aspect-ratio:16/9;display:block}

/* ---- 响应式 ---- */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .site-nav{display:none;position:absolute;top:70px;left:0;right:0;background:var(--white);flex-direction:column;padding:16px;box-shadow:0 8px 24px rgba(0,0,0,0.1);gap:4px}
  .site-nav.open{display:flex}
  .nav-mobile-btn{display:flex}
  .nav-search{display:none}
  .hero-content h1{font-size:2rem}
  .hero-content{padding:40px 20px}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .col-2,.col-3,.col-4{flex:0 0 100%}
  .contact-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .search-bar-inner h2{display:none}
  .footer-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .hero-stats{gap:16px}
  .hero-stat .num{font-size:1.5rem}
  .section{padding:40px 0}
}