/* ============================================
   小马拉大车 - 动物写真视频社区 全站样式
   原创设计 | jotxz.cn
   ============================================ */

/* CSS Reset & Base */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#2c2c2c;background:#fafaf7;line-height:1.7}
a{color:#d4740f;text-decoration:none;transition:color .3s}
a:hover{color:#a85b0a}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:#1a3a0a}

/* Color Variables */
:root{
  --primary:#d4740f;
  --primary-dark:#a85b0a;
  --secondary:#2d5a1e;
  --secondary-light:#4a8c32;
  --accent:#e8a840;
  --bg-cream:#fafaf7;
  --bg-white:#ffffff;
  --bg-dark:#1a3a0a;
  --text-dark:#2c2c2c;
  --text-light:#666666;
  --text-white:#f5f5f0;
  --border:#e0ddd5;
  --shadow:0 4px 20px rgba(0,0,0,.08);
  --shadow-hover:0 8px 30px rgba(0,0,0,.15);
  --radius:12px;
  --radius-sm:8px;
}

/* Container */
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ============ Header & Navigation ============ */
.site-header{background:#fff;border-bottom:2px solid var(--primary);position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:48px;width:auto}
.logo-wrap .brand-text{font-size:1.4rem;font-weight:800;color:var(--secondary)}
.logo-wrap .brand-text span{color:var(--primary)}

/* Nav */
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{padding:12px 16px;font-size:.95rem;color:var(--text-dark);font-weight:500;transition:all .3s;border-bottom:3px solid transparent}
.main-nav a:hover,.main-nav a.active{color:var(--primary);border-bottom-color:var(--primary)}
.nav-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--secondary)}

/* Search Bar */
.search-bar{background:#f5f3ed;padding:10px 0;border-bottom:1px solid var(--border)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:560px;width:100%;border-radius:25px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.search-box input{flex:1;padding:10px 20px;border:2px solid var(--border);border-right:none;border-radius:25px 0 0 25px;font-size:.95rem;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:var(--primary)}
.search-box button{padding:10px 24px;background:var(--primary);color:#fff;border:none;cursor:pointer;font-size:.95rem;font-weight:600;transition:background .3s}
.search-box button:hover{background:var(--primary-dark)}

/* Quick Nav Tags */
.quick-nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:16px 0}
.quick-nav a{background:#fff;border:1px solid var(--border);padding:6px 18px;border-radius:20px;font-size:.88rem;color:var(--text-dark);font-weight:500;transition:all .3s}
.quick-nav a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ============ Hero Banner ============ */
.hero-banner{position:relative;height:480px;overflow:hidden;background:#1a3a0a}
.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(180deg,rgba(26,58,10,.3) 0%,rgba(26,58,10,.7) 100%)}
.hero-overlay h1{font-size:2.6rem;color:#fff;margin-bottom:12px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.hero-overlay p{font-size:1.15rem;color:#f5f5f0;max-width:700px;line-height:1.8;text-shadow:1px 1px 4px rgba(0,0,0,.4)}
.hero-overlay .hero-tags{margin-top:20px;display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.hero-overlay .hero-tags span{background:rgba(212,116,15,.85);color:#fff;padding:6px 18px;border-radius:20px;font-size:.88rem;font-weight:500}

/* ============ Breadcrumb ============ */
.breadcrumb{padding:12px 0;font-size:.85rem;color:var(--text-light)}
.breadcrumb a{color:var(--primary)}
.breadcrumb span{margin:0 6px;color:#ccc}

/* ============ Section Styles ============ */
.section{padding:50px 0}
.section-alt{background:#f0ede5}
.section-dark{background:var(--bg-dark);color:var(--text-white)}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-title{text-align:center;margin-bottom:36px}
.section-title h2{font-size:1.9rem;color:var(--secondary);margin-bottom:8px}
.section-title p{color:var(--text-light);font-size:1rem}
.section-title h2::after{content:"";display:block;width:60px;height:3px;background:var(--primary);margin:10px auto 0}

/* ============ Video Card Grid - H5 Video Support ============ */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#e0ddd5}
.video-thumb img,.video-thumb video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img,.video-card:hover .video-thumb video{transform:scale(1.05)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(212,116,15,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;z-index:10}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn::after{content:"";display:block;width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.78rem;z-index:10}
.video-info{padding:14px 16px}
.video-info h3{font-size:1rem;margin-bottom:6px;color:var(--text-dark);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;font-size:.82rem;color:var(--text-light)}
.video-meta .views::before{content:"▶ "}
.video-meta .likes::before{content:"♥ "}
.video-meta .comments::before{content:"💬 "}

/* ============ Expert Cards ============ */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:28px}
.expert-card{background:#fff;border-radius:var(--radius);padding:28px 20px;text-align:center;box-shadow:var(--shadow);transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:3px solid var(--primary)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.1rem;color:var(--secondary);margin-bottom:4px}
.expert-card .expert-title{color:var(--primary);font-size:.88rem;font-weight:600;margin-bottom:10px}
.expert-card p{font-size:.88rem;color:var(--text-light);line-height:1.6;margin-bottom:14px}
.expert-links{display:flex;gap:10px;justify-content:center}
.expert-links a{padding:6px 16px;border-radius:20px;font-size:.82rem;font-weight:500;transition:all .3s}
.expert-links .btn-contact{background:var(--primary);color:#fff}
.expert-links .btn-contact:hover{background:var(--primary-dark)}
.expert-links .btn-work{border:1px solid var(--secondary);color:var(--secondary)}
.expert-links .btn-work:hover{background:var(--secondary);color:#fff}

/* ============ FAQ Section ============ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;background:#fff}
.faq-question{padding:16px 20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s;font-size:.98rem}
.faq-question:hover{background:#f9f7f2}
.faq-question::after{content:"+";font-size:1.3rem;color:var(--primary);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;font-size:.92rem;color:var(--text-light);line-height:1.8}
.faq-item.active .faq-answer{max-height:300px;padding:0 20px 16px}

/* ============ Reviews ============ */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border-left:4px solid var(--primary)}
.review-card .stars{color:var(--accent);font-size:1rem;margin-bottom:8px;letter-spacing:2px}
.review-card p{font-size:.92rem;color:var(--text-dark);line-height:1.7;margin-bottom:12px;font-style:italic}
.review-card .reviewer{font-size:.85rem;color:var(--text-light);font-weight:600}

/* ============ AI Module ============ */
.ai-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.ai-feature-card{background:linear-gradient(135deg,#1a3a0a 0%,#2d5a1e 100%);border-radius:var(--radius);padding:28px;color:#fff;transition:transform .3s}
.ai-feature-card:hover{transform:translateY(-4px)}
.ai-feature-card .ai-icon{font-size:2.2rem;margin-bottom:14px}
.ai-feature-card h4{font-size:1.1rem;margin-bottom:8px}
.ai-feature-card p{font-size:.88rem;opacity:.85;line-height:1.7}

/* ============ Community Module ============ */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}
.community-card{display:block;background:#fff;border-radius:var(--radius);overflow:hidden;text-align:center;box-shadow:var(--shadow);transition:transform .3s;color:var(--text-dark)}
.community-card:hover{transform:translateY(-4px);color:var(--primary)}
.community-card img{width:100%;height:140px;object-fit:cover}
.community-card h4{padding:12px 10px 4px;font-size:.95rem;color:var(--secondary)}
.community-card p{padding:0 10px 14px;font-size:.82rem;color:var(--text-light)}

/* ============ Contact Section ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.contact-info{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.contact-info h3{color:var(--secondary);margin-bottom:16px;font-size:1.2rem}
.contact-info .info-item{display:flex;gap:12px;margin-bottom:14px;font-size:.92rem}
.contact-info .info-item .label{font-weight:600;color:var(--primary);min-width:80px}
.contact-qr{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}
.contact-qr .qr-item{text-align:center}
.contact-qr .qr-item img{width:160px;height:160px;border-radius:var(--radius-sm);margin-bottom:8px}
.contact-qr .qr-item p{font-size:.85rem;color:var(--text-light);font-weight:600}

/* ============ Share Buttons ============ */
.share-bar{display:flex;gap:10px;justify-content:center;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:.85rem;font-weight:500;color:#fff;transition:opacity .3s}
.share-btn:hover{opacity:.85;color:#fff}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#00a1d6}

/* ============ Footer ============ */
.site-footer{background:var(--bg-dark);color:var(--text-white);padding:40px 0 0}
.footer-inner{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;max-width:1200px;margin:0 auto;padding:0 20px}
.footer-col h4{font-size:1rem;margin-bottom:14px;color:var(--accent);position:relative;padding-bottom:8px}
.footer-col h4::after{content:"";position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--primary)}
.footer-col p,.footer-col a{font-size:.88rem;color:rgba(245,245,240,.7);line-height:1.9}
.footer-col a:hover{color:var(--accent)}
.footer-col .footer-logo{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-col .footer-logo img{height:36px}
.footer-col .footer-logo span{font-size:1.2rem;font-weight:700;color:#fff}
.footer-bottom{text-align:center;padding:20px;margin-top:30px;border-top:1px solid rgba(255,255,255,.1);font-size:.82rem;color:rgba(245,245,240,.5)}
.footer-qr{display:flex;gap:16px;margin-top:10px}
.footer-qr img{width:100px;height:100px;border-radius:6px}

/* ============ How-To Guide ============ */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;counter-reset:step}
.howto-step{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-12px;left:20px;width:32px;height:32px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}
.howto-step h4{margin-top:8px;margin-bottom:8px;color:var(--secondary);font-size:1rem}
.howto-step p{font-size:.88rem;color:var(--text-light);line-height:1.7}

/* ============ Partner Logos ============ */
.partner-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.partner-wall .partner-item{background:#fff;border-radius:var(--radius-sm);padding:16px 28px;box-shadow:var(--shadow);font-size:.9rem;font-weight:600;color:var(--secondary);transition:transform .3s}
.partner-wall .partner-item:hover{transform:scale(1.05)}

/* ============ Category Tags ============ */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:20px}
.tag-cloud a{background:#fff;border:1px solid var(--border);padding:6px 16px;border-radius:20px;font-size:.85rem;color:var(--text-dark);transition:all .3s}
.tag-cloud a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ============ Inner Page Content ============ */
.page-content{padding:40px 0}
.page-content h2{font-size:1.6rem;color:var(--secondary);margin-bottom:16px}
.page-content h3{font-size:1.3rem;color:var(--primary-dark);margin:24px 0 12px}
.page-content p{margin-bottom:16px;font-size:.95rem;line-height:1.8;color:var(--text-dark)}
.page-content .content-img{border-radius:var(--radius);overflow:hidden;margin:20px 0;box-shadow:var(--shadow)}

/* ============ Responsive ============ */
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;flex-direction:column;width:100%;background:#fff;position:absolute;top:100%;left:0;box-shadow:var(--shadow);z-index:999}
  .main-nav.active{display:flex}
  .main-nav a{padding:14px 20px;border-bottom:1px solid var(--border)}
  .nav-toggle{display:block}
  .hero-banner{height:320px}
  .hero-overlay h1{font-size:1.6rem}
  .hero-overlay p{font-size:.92rem}
  .contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .expert-grid{grid-template-columns:1fr 1fr}
  .section{padding:30px 0}
  .section-title h2{font-size:1.5rem}
  .quick-nav{gap:6px}
  .quick-nav a{padding:4px 12px;font-size:.82rem}
  .community-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
}
@media(max-width:480px){
  .expert-grid{grid-template-columns:1fr}
  .video-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:1fr 1fr}
  .hero-banner{height:260px}
  .hero-overlay h1{font-size:1.3rem}
  .ai-features{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
}