/* 寸止挑战 - 植物视频社区 全站样式 */
/* Reset */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:#333;background:#f8f9fa;line-height:1.8}
a{text-decoration:none;color:#1a7a3a;transition:color .3s}
a:hover{color:#0d5c2a}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 15px}

/* Header */
.site-header{background:linear-gradient(135deg,#0a2e1a 0%,#1a5c3a 50%,#0d3d22 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 15px rgba(0,0,0,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 0;flex-wrap:wrap}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{height:50px;width:auto}
.site-logo h1{color:#fff;font-size:1.5rem;white-space:nowrap}
.site-logo h1 span{color:#4ade80}

/* Navigation */
.main-nav{display:flex;flex-wrap:wrap;gap:0}
.main-nav a{color:#e0e0e0;padding:8px 14px;font-size:.9rem;border-radius:4px;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(74,222,128,.2)}

/* Search Box */
.search-box{width:100%;background:rgba(255,255,255,.05);padding:8px 0}
.search-box form{display:flex;max-width:600px;margin:0 auto}
.search-box input[type="text"]{flex:1;padding:8px 15px;border:2px solid #4ade80;border-right:none;border-radius:20px 0 0 20px;background:rgba(255,255,255,.9);font-size:.9rem;outline:none}
.search-box button{padding:8px 20px;background:#4ade80;color:#0a2e1a;border:2px solid #4ade80;border-radius:0 20px 20px 0;cursor:pointer;font-weight:bold;font-size:.9rem;transition:background .3s}
.search-box button:hover{background:#22c55e}

/* Banner */
.banner-section{position:relative;overflow:hidden;min-height:400px;display:flex;align-items:center;justify-content:center}
.banner-section img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}
.banner-overlay{position:relative;z-index:2;text-align:center;color:#fff;padding:60px 20px;background:rgba(10,46,26,.6);border-radius:20px;max-width:800px;backdrop-filter:blur(5px)}
.banner-overlay h2{font-size:2.5rem;margin-bottom:15px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.banner-overlay h2 span{color:#4ade80}
.banner-overlay p{font-size:1.1rem;line-height:1.8;text-shadow:1px 1px 4px rgba(0,0,0,.5)}

/* Section Titles */
.section-title{text-align:center;margin:40px 0 30px;position:relative}
.section-title h2{font-size:1.8rem;color:#0a2e1a;display:inline-block;position:relative;padding-bottom:10px}
.section-title h2::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,#4ade80,#1a7a3a)}
.section-title p{color:#666;margin-top:10px;font-size:.95rem}

/* Video Cards */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;padding:20px 0}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s;position:relative}
.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;background:#000}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .3s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(74,222,128,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer;z-index:3}
.play-btn::after{content:'';border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-card:hover .play-btn{opacity:1}
.video-info{padding:15px}
.video-info h3{font-size:1rem;color:#1a1a1a;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:15px;color:#999;font-size:.8rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;background:#e8f5e9;color:#1a7a3a;padding:2px 8px;border-radius:10px;font-size:.75rem;margin-top:8px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 6px;border-radius:4px;font-size:.75rem;z-index:3}

/* Module Sections */
.module-section{padding:40px 0}
.module-section:nth-child(even){background:#fff}
.module-section:nth-child(odd){background:#f0fdf4}

/* Expert Cards */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;padding:20px 0}
.expert-card{background:#fff;border-radius:12px;padding:25px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s}
.expert-card:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(0,0,0,.12)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 15px;overflow:hidden;border:3px solid #4ade80}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{color:#0a2e1a;font-size:1.1rem;margin-bottom:5px}
.expert-card .role{color:#4ade80;font-size:.85rem;margin-bottom:10px}
.expert-card p{color:#666;font-size:.85rem;line-height:1.6}
.expert-card .btn-group{margin-top:15px;display:flex;gap:8px;justify-content:center;flex-wrap:wrap}

/* Buttons */
.btn{display:inline-block;padding:8px 20px;border-radius:20px;font-size:.85rem;cursor:pointer;transition:all .3s;border:none}
.btn-primary{background:#4ade80;color:#0a2e1a;font-weight:bold}
.btn-primary:hover{background:#22c55e;color:#fff}
.btn-outline{border:1px solid #4ade80;color:#1a7a3a;background:transparent}
.btn-outline:hover{background:#4ade80;color:#fff}

/* FAQ Section */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:8px;margin-bottom:12px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.faq-question{padding:15px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:bold;color:#0a2e1a;transition:background .3s}
.faq-question:hover{background:#f0fdf4}
.faq-question::after{content:'+';font-size:1.3rem;color:#4ade80;transition:transform .3s}
.faq-item.active .faq-question::after{content:'-';transform:rotate(180deg)}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:all .3s;color:#555;line-height:1.8}
.faq-item.active .faq-answer{padding:0 20px 15px;max-height:500px}

/* Reviews */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;padding:20px 0}
.review-card{background:#fff;border-radius:12px;padding:20px;box-shadow:0 4px 15px rgba(0,0,0,.08)}
.review-card .stars{color:#f59e0b;font-size:1.1rem;margin-bottom:10px}
.review-card blockquote{color:#555;font-style:italic;line-height:1.7;margin-bottom:10px;font-size:.9rem}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer-name{font-weight:bold;color:#0a2e1a;font-size:.9rem}
.review-card .reviewer-date{color:#999;font-size:.8rem}

/* Partner Logos */
.partner-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center;padding:20px 0}
.partner-wall .partner-item{background:#fff;padding:15px 25px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.05);font-weight:bold;color:#1a7a3a;font-size:1rem}

/* How-To Guide */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px;padding:20px 0}
.howto-step{background:#fff;border-radius:12px;padding:25px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.08);position:relative}
.howto-step .step-num{width:40px;height:40px;background:#4ade80;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:bold;font-size:1.2rem;margin:0 auto 15px}
.howto-step h4{color:#0a2e1a;margin-bottom:10px}
.howto-step p{color:#666;font-size:.9rem;line-height:1.6}

/* Contact Section */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;padding:20px 0}
.contact-card{background:#fff;border-radius:12px;padding:25px;box-shadow:0 4px 15px rgba(0,0,0,.08)}
.contact-card h4{color:#0a2e1a;margin-bottom:15px;font-size:1.1rem;border-bottom:2px solid #4ade80;padding-bottom:8px}
.contact-card p{color:#555;line-height:1.8;font-size:.9rem;margin-bottom:5px}

/* Share Buttons */
.share-bar{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:20px;color:#fff;font-size:.85rem;cursor:pointer;transition:opacity .3s}
.share-btn:hover{opacity:.8;color:#fff}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#00a1d6}

/* Footer */
.site-footer{background:linear-gradient(135deg,#0a2e1a,#1a5c3a);color:#ccc;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:#4ade80;margin-bottom:15px;font-size:1rem}
.footer-col p,.footer-col a{color:#aaa;font-size:.85rem;line-height:2}
.footer-col a:hover{color:#4ade80}
.footer-col img{max-width:120px;border-radius:8px;margin-top:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:.8rem;color:#888}
.footer-bottom a{color:#4ade80}

/* Breadcrumb */
.breadcrumb{padding:12px 0;font-size:.85rem;color:#666}
.breadcrumb a{color:#1a7a3a}
.breadcrumb span{margin:0 6px;color:#999}

/* Content Page */
.page-content{background:#fff;border-radius:12px;padding:30px;margin:20px 0;box-shadow:0 4px 15px rgba(0,0,0,.08)}
.page-content h2{color:#0a2e1a;font-size:1.6rem;margin-bottom:15px;border-left:4px solid #4ade80;padding-left:12px}
.page-content h3{color:#1a5c3a;font-size:1.2rem;margin:20px 0 10px}
.page-content p{color:#555;line-height:1.8;margin-bottom:15px}
.page-content ul{padding-left:20px;margin-bottom:15px}
.page-content ul li{color:#555;line-height:2;position:relative;padding-left:15px}
.page-content ul li::before{content:'🌿';position:absolute;left:0;top:0}

/* Tags */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;padding:10px 0}
.tag-cloud a{background:#e8f5e9;color:#1a7a3a;padding:4px 12px;border-radius:15px;font-size:.8rem;transition:all .3s}
.tag-cloud a:hover{background:#4ade80;color:#fff}

/* Interference tags - hidden but present */
.dg-noise{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}

/* Responsive */
@media(max-width:768px){
.header-inner{flex-direction:column;gap:10px}
.main-nav{justify-content:center}
.main-nav a{padding:6px 10px;font-size:.8rem}
.banner-overlay h2{font-size:1.5rem}
.banner-overlay p{font-size:.9rem}
.section-title h2{font-size:1.4rem}
.video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.footer-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
.main-nav a{padding:5px 8px;font-size:.75rem}
.video-grid{grid-template-columns:1fr}
.banner-section{min-height:250px}
.banner-overlay{padding:30px 15px}
.banner-overlay h2{font-size:1.2rem}
}

/* Lazy load placeholder */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}

/* MCP Frontend Mock */
.mcp-widget{background:#1a1a2e;border-radius:12px;padding:20px;margin:20px 0;color:#e0e0e0}
.mcp-widget h4{color:#4ade80;margin-bottom:10px}
.mcp-widget .mcp-input{width:100%;padding:10px;background:#16213e;border:1px solid #4ade80;border-radius:8px;color:#fff;margin-bottom:10px}
.mcp-widget .mcp-btn{background:#4ade80;color:#0a2e1a;padding:8px 20px;border:none;border-radius:8px;cursor:pointer;font-weight:bold}