/* ===== 91 - 动物写真与视频社区 全站样式 ===== */
/* 原创配色: 翡翠绿 #0D9B6A | 深青 #0A7B5A | 暖橙 #E8853D | 深灰 #1E293B | 浅灰背景 #F0F5F3 */

/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#1E293B;background:#F0F5F3;line-height:1.7;overflow-x:hidden}
a{color:#0D9B6A;text-decoration:none;transition:color .25s}
a:hover{color:#E8853D}
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:#1E293B}

/* ===== Layout Utilities ===== */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-alt{background:#fff}
.text-center{text-align:center}
.flex-center{display:flex;align-items:center;justify-content:center}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}

/* ===== Header / Navigation ===== */
.site-header{background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.06);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{height:42px;width:auto}
.logo-wrap .brand-name{font-size:22px;font-weight:800;color:#0D9B6A;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 14px;border-radius:6px;font-size:15px;color:#1E293B;font-weight:500;transition:all .25s}
.main-nav a:hover,.main-nav a.active{background:#0D9B6A;color:#fff}
.mobile-menu-btn{display:none;background:none;border:none;font-size:26px;color:#1E293B;cursor:pointer}

/* ===== Search Bar ===== */
.search-bar-wrap{background:linear-gradient(135deg,#0D9B6A 0%,#0A7B5A 100%);padding:14px 0}
.search-bar{max-width:680px;margin:0 auto;display:flex;gap:0;border-radius:28px;overflow:hidden;box-shadow:0 4px 16px rgba(13,155,106,.25)}
.search-bar input{flex:1;padding:12px 24px;border:none;font-size:15px;outline:none;background:#fff;color:#1E293B}
.search-bar input::placeholder{color:#94A3B8}
.search-bar button{padding:12px 28px;background:#E8853D;color:#fff;border:none;font-size:15px;font-weight:600;cursor:pointer;transition:background .25s}
.search-bar button:hover{background:#D4742E}

/* ===== Hero Banner ===== */
.hero-banner{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-banner .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.65)}
.hero-content{position:relative;z-index:2;text-align:center;color:#fff;padding:0 20px;max-width:800px}
.hero-content h1{font-size:42px;margin-bottom:16px;text-shadow:0 2px 12px rgba(0,0,0,.4)}
.hero-content p{font-size:18px;margin-bottom:24px;text-shadow:0 1px 6px rgba(0,0,0,.3);line-height:1.8}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.hero-content .hero-tags span{background:rgba(255,255,255,.18);backdrop-filter:blur(6px);padding:6px 18px;border-radius:20px;font-size:14px;border:1px solid rgba(255,255,255,.25)}

/* ===== Section Titles ===== */
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:32px;color:#1E293B;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:4px;background:linear-gradient(90deg,#0D9B6A,#E8853D);margin:10px auto 0;border-radius:2px}
.section-title p{color:#64748B;font-size:16px;margin-top:8px}

/* ===== Video Card ===== */
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(0,0,0,.12)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#e2e8f0}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.video-play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;background:rgba(0,0,0,.3)}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn span{width:56px;height:56px;background:rgba(13,155,106,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;box-shadow:0 4px 16px rgba(0,0,0,.2)}
.video-info{padding:16px}
.video-info h3{font-size:16px;margin-bottom:8px;color:#1E293B;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:14px;color:#94A3B8;font-size:13px}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:12px}

/* ===== Expert Card ===== */
.expert-card{background:#fff;border-radius:12px;padding:28px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:100px;height:100px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid #0D9B6A}
.expert-card h4{font-size:18px;color:#1E293B;margin-bottom:4px}
.expert-card .expert-role{color:#0D9B6A;font-size:14px;margin-bottom:10px}
.expert-card p{color:#64748B;font-size:14px;line-height:1.6;margin-bottom:14px}
.expert-card .expert-btns{display:flex;gap:10px;justify-content:center}
.expert-card .expert-btns a{padding:6px 16px;border-radius:6px;font-size:13px;font-weight:500}
.btn-primary{background:#0D9B6A;color:#fff !important;transition:background .25s}
.btn-primary:hover{background:#0A7B5A}
.btn-outline{border:1px solid #0D9B6A;color:#0D9B6A !important;transition:all .25s}
.btn-outline:hover{background:#0D9B6A;color:#fff !important}

/* ===== FAQ Section ===== */
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:0 2px 10px rgba(0,0,0,.04);overflow:hidden}
.faq-question{padding:18px 24px;font-size:16px;font-weight:600;color:#1E293B;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .25s}
.faq-question:hover{background:#F0F5F3}
.faq-question .faq-icon{font-size:20px;color:#0D9B6A;transition:transform .3s}
.faq-item.active .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;color:#64748B;font-size:15px;line-height:1.8}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 18px}

/* ===== Review / Testimonial ===== */
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.review-card .review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-card .review-avatar{width:48px;height:48px;border-radius:50%;background:#0D9B6A;color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700}
.review-card .review-name{font-weight:600;color:#1E293B}
.review-card .review-date{font-size:13px;color:#94A3B8}
.review-card .review-stars{color:#E8853D;margin-bottom:10px;font-size:15px}
.review-card .review-text{color:#475569;font-size:15px;line-height:1.7}

/* ===== Category Module ===== */
.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}
.category-item{background:#fff;border-radius:10px;padding:20px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.05);transition:all .3s}
.category-item:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.1)}
.category-item .cat-icon{font-size:36px;margin-bottom:10px}
.category-item h4{font-size:15px;color:#1E293B;margin-bottom:4px}
.category-item p{font-size:13px;color:#94A3B8}

/* ===== AI Module ===== */
.ai-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-feature-card{background:linear-gradient(135deg,#0D9B6A 0%,#0A7B5A 100%);border-radius:12px;padding:32px;color:#fff;text-align:center;transition:transform .3s}
.ai-feature-card:hover{transform:translateY(-4px)}
.ai-feature-card .ai-icon{font-size:42px;margin-bottom:14px}
.ai-feature-card h4{font-size:18px;margin-bottom:10px}
.ai-feature-card p{font-size:14px;opacity:.9;line-height:1.7}

/* ===== Contact Section ===== */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;align-items:start}
.contact-info{background:#fff;border-radius:12px;padding:32px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.contact-info h3{font-size:20px;margin-bottom:20px;color:#1E293B}
.contact-info .info-item{display:flex;gap:12px;margin-bottom:16px;align-items:flex-start}
.contact-info .info-item .info-icon{width:36px;height:36px;background:#F0F5F3;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#0D9B6A;font-size:16px;flex-shrink:0}
.contact-info .info-item .info-text{font-size:15px;color:#475569}
.contact-info .info-item .info-text strong{color:#1E293B;display:block;margin-bottom:2px}
.contact-qr{display:flex;gap:24px;justify-content:center;margin-top:20px}
.contact-qr .qr-item{text-align:center}
.contact-qr .qr-item img{width:140px;height:140px;border-radius:8px;margin-bottom:8px}
.contact-qr .qr-item p{font-size:13px;color:#64748B}

/* ===== Share Buttons ===== */
.share-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-btn{padding:8px 18px;border-radius:6px;font-size:14px;color:#fff;font-weight:500;transition:opacity .25s;cursor:pointer;border:none}
.share-btn:hover{opacity:.85}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* ===== Footer ===== */
.site-footer{background:#1E293B;color:#CBD5E1;padding:48px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:36px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:3px;background:#0D9B6A;border-radius:2px}
.footer-col p{font-size:14px;line-height:1.8;color:#94A3B8}
.footer-col a{display:block;color:#94A3B8;font-size:14px;padding:4px 0;transition:color .25s}
.footer-col a:hover{color:#0D9B6A}
.footer-col .footer-logo{height:36px;margin-bottom:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:13px;color:#64748B}
.footer-bottom a{color:#0D9B6A}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:14px 0;font-size:14px;color:#94A3B8}
.breadcrumb a{color:#0D9B6A}
.breadcrumb span{margin:0 6px;color:#CBD5E1}

/* ===== Inner Page Content ===== */
.page-hero{background:linear-gradient(135deg,#0D9B6A,#0A7B5A);padding:48px 0;text-align:center;color:#fff}
.page-hero h1{font-size:36px;color:#fff;margin-bottom:10px}
.page-hero p{font-size:16px;opacity:.9}
.content-wrap{padding:40px 0}
.content-article{background:#fff;border-radius:12px;padding:36px;box-shadow:0 4px 20px rgba(0,0,0,.06);margin-bottom:32px}
.content-article h2{font-size:24px;margin-bottom:16px;color:#1E293B}
.content-article h3{font-size:20px;margin:24px 0 12px;color:#0D9B6A}
.content-article p{margin-bottom:16px;color:#475569;line-height:1.8}
.content-article img{border-radius:8px;margin:16px 0}

/* ===== How-To Guide ===== */
.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);width:40px;height:40px;background:#0D9B6A;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex-shrink:0}
.howto-step-content h4{font-size:17px;color:#1E293B;margin-bottom:6px}
.howto-step-content p{color:#64748B;font-size:15px}

/* ===== Partner Logos ===== */
.partner-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.partner-wall .partner-logo{background:#fff;border-radius:10px;padding:16px 24px;box-shadow:0 2px 10px rgba(0,0,0,.05);font-size:16px;font-weight:600;color:#64748B;transition:all .3s}
.partner-wall .partner-logo:hover{box-shadow:0 6px 20px rgba(0,0,0,.1);color:#0D9B6A}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .ai-feature-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;flex-direction:column;width:100%;padding-top:10px}
  .main-nav.show{display:flex}
  .mobile-menu-btn{display:block}
  .hero-banner{height:380px}
  .hero-content h1{font-size:28px}
  .hero-content p{font-size:15px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .ai-feature-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:24px}
  .category-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .hero-banner{height:300px}
  .hero-content h1{font-size:22px}
  .search-bar{border-radius:20px}
  .search-bar input{padding:10px 16px;font-size:14px}
  .search-bar button{padding:10px 18px;font-size:14px}
}

/* ===== Lazy Load Placeholder ===== */
img[loading="lazy"]{opacity:0;transition:opacity .4s}
img[loading="lazy"].loaded,img[loading="lazy"][src]{opacity:1}

/* ===== Video Element in Card ===== */
.video-thumb video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.video-thumb .video-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.video-card:hover .video-poster{opacity:.92}

/* ===== Interference Tags (hidden) ===== */
.dyr-noise{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}