/* ========================================
   暗网 - 动物写真与视频社区 主样式表
   品牌色系：橙金色 #FF6B35 / #FFB347 / #1A1A2E
   ======================================== */

/* CSS Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#333;background:#fafafa;line-height:1.8;overflow-x:hidden}
a{color:#FF6B35;text-decoration:none;transition:color .3s}
a:hover{color:#e05a2b}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;color:#1A1A2E;line-height:1.4}

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

/* ===== Header / Navigation ===== */
.site-header{background:#1A1A2E;position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(0,0,0,.15)}
.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:42px;width:auto}
.logo-wrap .brand-name{color:#FFB347;font-size:1.4rem;font-weight:700;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{color:#e0e0e0;padding:12px 16px;font-size:.95rem;transition:all .3s;position:relative}
.main-nav a:hover,.main-nav a.active{color:#FFB347}
.main-nav a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:#FF6B35;transition:width .3s}
.main-nav a:hover::after,.main-nav a.active::after{width:70%}
.mobile-toggle{display:none;color:#fff;font-size:1.5rem;cursor:pointer;background:none;border:none}

/* Search Bar */
.search-bar{background:linear-gradient(135deg,#1A1A2E 0%,#2d2d4e 100%);padding:14px 0}
.search-bar .container{display:flex;justify-content:center}
.search-form{display:flex;max-width:600px;width:100%;position:relative}
.search-form input{flex:1;padding:12px 20px;border:2px solid #FF6B35;border-radius:25px 0 0 25px;font-size:.95rem;outline:none;background:#fff;color:#333}
.search-form input:focus{border-color:#FFB347;box-shadow:0 0 8px rgba(255,107,53,.3)}
.search-form button{padding:12px 28px;background:linear-gradient(135deg,#FF6B35,#FFB347);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;font-weight:600;transition:all .3s}
.search-form button:hover{background:linear-gradient(135deg,#e05a2b,#FF6B35)}

/* ===== Banner ===== */
.hero-banner{position:relative;height:480px;overflow:hidden;background:#1A1A2E}
.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(to bottom,rgba(26,26,46,.3),rgba(26,26,46,.7))}
.hero-overlay h1{color:#fff;font-size:2.6rem;margin-bottom:12px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.hero-overlay h1 span{color:#FFB347}
.hero-overlay p{color:#e0e0e0;font-size:1.15rem;max-width:700px;line-height:1.8}
.hero-overlay .hero-tags{margin-top:20px;display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.hero-overlay .hero-tags span{background:rgba(255,107,53,.85);color:#fff;padding:6px 18px;border-radius:20px;font-size:.85rem}

/* ===== Section Common ===== */
.section{padding:60px 0}
.section-alt{background:#fff}
.section-dark{background:#1A1A2E;color:#e0e0e0}
.section-dark h2,.section-dark h3{color:#FFB347}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;margin-bottom:8px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#FF6B35,#FFB347);margin:10px auto 0}
.section-title p{color:#777;font-size:1rem;margin-top:8px}

/* ===== Video Card Grid ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.08);transition:all .3s;position:relative}
.video-card:hover{transform:translateY(-6px);box-shadow:0 8px 28px rgba(255,107,53,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#eee}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(255,107,53,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer}
.play-btn::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card:hover .play-btn{opacity:1}
.video-info{padding:16px}
.video-info h3{font-size:1.05rem;margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.video-info .meta{display:flex;gap:14px;color:#999;font-size:.82rem}
.video-info .meta span{display:flex;align-items:center;gap:4px}
.video-tag{position:absolute;top:10px;left:10px;background:rgba(255,107,53,.9);color:#fff;padding:3px 10px;border-radius:4px;font-size:.75rem;z-index:2}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem;z-index:2}

/* ===== Module Cards ===== */
.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.module-card{background:#fff;border-radius:12px;padding:28px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .3s;border:1px solid #f0f0f0}
.module-card:hover{border-color:#FF6B35;box-shadow:0 6px 24px rgba(255,107,53,.12)}
.module-card .icon{width:60px;height:60px;margin:0 auto 16px;background:linear-gradient(135deg,#FF6B35,#FFB347);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff}
.module-card h3{font-size:1.1rem;margin-bottom:8px}
.module-card p{color:#777;font-size:.9rem;line-height:1.7}

/* ===== Expert Section ===== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:28px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.08);text-align:center;transition:all .3s}
.expert-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(255,107,53,.12)}
.expert-card img{width:120px;height:120px;border-radius:50%;object-fit:cover;margin:24px auto 12px;border:3px solid #FFB347}
.expert-card h3{font-size:1.05rem;margin-bottom:4px}
.expert-card .role{color:#FF6B35;font-size:.85rem;margin-bottom:10px}
.expert-card p{color:#777;font-size:.85rem;padding:0 20px;line-height:1.6}
.expert-card .actions{padding:16px;display:flex;gap:10px;justify-content:center}
.btn-primary{display:inline-block;padding:8px 22px;background:linear-gradient(135deg,#FF6B35,#FFB347);color:#fff;border-radius:25px;font-size:.85rem;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{background:linear-gradient(135deg,#e05a2b,#FF6B35);color:#fff;transform:scale(1.02)}
.btn-outline{display:inline-block;padding:8px 22px;border:1px solid #FF6B35;color:#FF6B35;border-radius:25px;font-size:.85rem;transition:all .3s;background:transparent;cursor:pointer}
.btn-outline:hover{background:#FF6B35;color:#fff}

/* ===== FAQ Section ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid #eee;border-radius:10px;margin-bottom:12px;overflow:hidden;background:#fff}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:background .3s}
.faq-question:hover{background:#fff8f5}
.faq-question .arrow{transition:transform .3s;color:#FF6B35;font-size:1.2rem}
.faq-item.active .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:#666;font-size:.92rem;line-height:1.8}
.faq-item.active .faq-answer{padding:0 24px 18px;max-height:500px}

/* ===== Reviews ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 16px rgba(0,0,0,.06);border-left:4px solid #FF6B35}
.review-card .stars{color:#FFB347;margin-bottom:8px;font-size:1.1rem}
.review-card .content{color:#555;font-size:.92rem;line-height:1.7;margin-bottom:12px;font-style:italic}
.review-card .author{display:flex;align-items:center;gap:10px}
.review-card .author .avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#FF6B35,#FFB347);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.85rem;font-weight:700}
.review-card .author .name{font-weight:600;font-size:.9rem}
.review-card .author .date{color:#999;font-size:.8rem}

/* ===== Community Section ===== */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}
.community-item{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:all .3s;text-align:center}
.community-item:hover{transform:translateY(-4px);box-shadow:0 6px 20px rgba(255,107,53,.1)}
.community-item img{width:100%;height:160px;object-fit:cover}
.community-item h4{padding:12px;font-size:.95rem}

/* ===== Footer ===== */
.site-footer{background:#1A1A2E;color:#aaa;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:40px}
.footer-col h4{color:#FFB347;font-size:1rem;margin-bottom:16px;position:relative;padding-bottom:8px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:#FF6B35}
.footer-col p,.footer-col li{font-size:.88rem;line-height:2;color:#999}
.footer-col a{color:#999;transition:color .3s}
.footer-col a:hover{color:#FFB347}
.footer-col .qr-wrap{display:flex;gap:16px;margin-top:10px}
.footer-col .qr-wrap img{width:100px;height:100px;border-radius:8px;border:2px solid #333}
.footer-col .qr-wrap .qr-label{text-align:center;font-size:.75rem;color:#777;margin-top:4px}
.footer-bottom{border-top:1px solid #2a2a4a;padding:20px 0;text-align:center;font-size:.82rem;color:#666}
.footer-bottom a{color:#FF6B35}
.footer-logo{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-logo img{height:36px}
.footer-logo span{color:#FFB347;font-size:1.2rem;font-weight:700}

/* ===== 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;color:#fff;transition:all .3s;cursor:pointer}
.share-btn.wechat{background:#07C160}
.share-btn.weibo{background:#E6162D}
.share-btn.douyin{background:#000}
.share-btn.bilibili{background:#FB7299}
.share-btn:hover{opacity:.85;transform:scale(1.05)}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#999}
.breadcrumb a{color:#FF6B35}
.breadcrumb span{margin:0 6px;color:#ccc}

/* ===== Inner Page Content ===== */
.page-content{padding:40px 0 60px}
.page-content h1{font-size:2rem;margin-bottom:20px}
.page-content h2{font-size:1.5rem;margin:30px 0 15px;color:#1A1A2E}
.page-content h3{font-size:1.2rem;margin:20px 0 10px}
.page-content p{margin-bottom:16px;line-height:1.9;color:#555}
.content-img{border-radius:12px;margin:20px 0;box-shadow:0 4px 16px rgba(0,0,0,.08)}

/* ===== Contact Info ===== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.contact-card{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 16px rgba(0,0,0,.06)}
.contact-card h3{margin-bottom:16px;color:#FF6B35}
.contact-card .info-item{display:flex;gap:12px;margin-bottom:12px;align-items:flex-start}
.contact-card .info-item .label{font-weight:600;min-width:80px;color:#333}
.contact-card .info-item .value{color:#666}

/* ===== Lazy Load ===== */
img[data-src]{opacity:0;transition:opacity .5s}
img.loaded{opacity:1}

/* ===== Interference Tags (hidden) ===== */
.dg_noise{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;font-size:0;line-height:0;visibility:hidden}

/* ===== Responsive ===== */
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;flex-direction:column;width:100%;background:#1A1A2E;padding:10px 0}
  .main-nav.open{display:flex}
  .main-nav a{padding:10px 20px;border-bottom:1px solid #2a2a4a}
  .mobile-toggle{display:block}
  .hero-banner{height:320px}
  .hero-overlay h1{font-size:1.6rem}
  .hero-overlay p{font-size:.9rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .module-grid{grid-template-columns:1fr 1fr}
  .expert-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:40px 0}
  .section-title h2{font-size:1.5rem}
}
@media(max-width:480px){
  .module-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .video-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:1fr 1fr}
  .hero-banner{height:260px}
  .hero-overlay h1{font-size:1.3rem}
}