/* ============================================
   野外露出 - 影视传媒视频社区 全站样式
   品牌色系：野外露出红 #E63946 | 深海蓝 #1D3557 | 琥珀金 #F4A261
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;color:#2B2D42;background:#F8F9FA;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color .3s}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3}

/* === 通用容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:2rem;color:#1D3557;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:"";display:block;width:60px;height:3px;background:#E63946;margin:12px auto 0}
.section-title p{color:#666;font-size:1rem;margin-top:8px}

/* === 顶部导航 === */
.top-header{background:#1D3557;color:#fff;padding:8px 0;font-size:13px}
.top-header .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}
.top-header a{color:#F4A261}
.top-header a:hover{color:#E63946}

.navbar{background:#fff;box-shadow:0 2px 15px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000;transition:box-shadow .3s}
.navbar .container{display:flex;justify-content:space-between;align-items:center;padding:0 20px}
.nav-brand{display:flex;align-items:center;gap:10px;padding:10px 0}
.nav-brand img{height:50px;width:auto}
.nav-brand span{font-size:1.4rem;font-weight:800;color:#E63946}
.nav-menu{display:flex;gap:0;align-items:center}
.nav-menu a{padding:18px 16px;font-size:15px;color:#2B2D42;font-weight:500;transition:all .3s;position:relative}
.nav-menu a:hover,.nav-menu a.active{color:#E63946}
.nav-menu a::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:3px;background:#E63946;transition:width .3s}
.nav-menu a:hover::after,.nav-menu a.active::after{width:70%}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:10px}
.nav-toggle span{display:block;width:25px;height:2px;background:#2B2D42;transition:all .3s}

/* === 搜索栏 === */
.search-bar{background:linear-gradient(135deg,#1D3557 0%,#0D1117 100%);padding:15px 0}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%;background:#fff;border-radius:30px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.2)}
.search-box input{flex:1;border:none;padding:12px 25px;font-size:15px;outline:none;color:#2B2D42}
.search-box input::placeholder{color:#999}
.search-box button{background:#E63946;color:#fff;border:none;padding:12px 30px;font-size:15px;cursor:pointer;transition:background .3s;font-weight:600}
.search-box button:hover{background:#c62d39}

/* === Hero Banner === */
.hero{position:relative;height:600px;overflow:hidden;background:#0D1117}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.6)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to right,rgba(13,17,23,.9) 0%,rgba(13,17,23,.4) 100%)}
.hero-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;padding:0 60px;max-width:700px}
.hero-content h1{font-size:3rem;color:#fff;margin-bottom:15px;text-shadow:0 2px 10px rgba(0,0,0,.5)}
.hero-content h1 em{color:#E63946;font-style:normal}
.hero-content p{font-size:1.15rem;color:rgba(255,255,255,.85);margin-bottom:30px;line-height:1.8}
.hero-btns{display:flex;gap:15px;flex-wrap:wrap}
.btn-primary{background:#E63946;color:#fff;padding:14px 35px;border-radius:30px;font-size:15px;font-weight:600;transition:all .3s;display:inline-block;border:none;cursor:pointer}
.btn-primary:hover{background:#c62d39;transform:translateY(-2px);box-shadow:0 8px 25px rgba(230,57,70,.4)}
.btn-outline{border:2px solid #F4A261;color:#F4A261;padding:12px 35px;border-radius:30px;font-size:15px;font-weight:600;transition:all .3s;display:inline-block}
.btn-outline:hover{background:#F4A261;color:#fff;transform:translateY(-2px)}

/* === 视频卡片区域 === */
.video-section{padding:80px 0;background:#fff}
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.video-card{position:relative;border-radius:12px;overflow:hidden;background:#0D1117;box-shadow:0 5px 20px rgba(0,0,0,.1);transition:all .4s;cursor:pointer}
.video-card:hover{transform:translateY(-8px);box-shadow:0 15px 40px rgba(0,0,0,.2)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.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,.4)}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn .play-icon{width:60px;height:60px;background:rgba(230,57,70,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s}
.video-play-btn .play-icon::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:4px}
.video-card:hover .play-icon{transform:scale(1.15)}
.video-info{padding:15px}
.video-info h4{font-size:15px;color:#fff;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:15px;font-size:12px;color:#999}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;background:#E63946;color:#fff;font-size:11px;padding:2px 8px;border-radius:3px;margin-bottom:8px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;font-size:12px;padding:2px 6px;border-radius:3px}

/* === 服务模块 === */
.services-section{padding:80px 0;background:#F8F9FA}
.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:30px}
.service-card{background:#fff;border-radius:12px;padding:35px 25px;text-align:center;transition:all .4s;box-shadow:0 3px 15px rgba(0,0,0,.05);border:1px solid #eee}
.service-card:hover{transform:translateY(-8px);box-shadow:0 15px 40px rgba(0,0,0,.12);border-color:#E63946}
.service-icon{width:70px;height:70px;margin:0 auto 20px;background:linear-gradient(135deg,#E63946,#F4A261);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:30px;color:#fff}
.service-card h4{font-size:1.1rem;color:#1D3557;margin-bottom:10px}
.service-card p{font-size:14px;color:#666;line-height:1.7}

/* === AI赋能区 === */
.ai-section{padding:80px 0;background:linear-gradient(135deg,#0D1117 0%,#1D3557 100%);color:#fff}
.ai-section .section-title h2{color:#fff}
.ai-section .section-title h2::after{background:#F4A261}
.ai-section .section-title p{color:rgba(255,255,255,.7)}
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:30px}
.ai-card{background:rgba(255,255,255,.06);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:35px;transition:all .4s}
.ai-card:hover{background:rgba(255,255,255,.12);transform:translateY(-5px);border-color:rgba(244,162,97,.4)}
.ai-card h4{font-size:1.15rem;color:#F4A261;margin-bottom:12px}
.ai-card p{font-size:14px;color:rgba(255,255,255,.75);line-height:1.8}

/* === 社区功能 === */
.community-section{padding:80px 0;background:#fff}
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}
.community-item{text-align:center;padding:30px 15px;border-radius:12px;background:#F8F9FA;transition:all .3s;border:2px solid transparent}
.community-item:hover{border-color:#E63946;background:#fff;transform:translateY(-5px);box-shadow:0 10px 30px rgba(230,57,70,.1)}
.community-item .icon{font-size:36px;margin-bottom:12px}
.community-item h5{font-size:15px;color:#1D3557;margin-bottom:6px}
.community-item p{font-size:13px;color:#888}

/* === 专家团队 === */
.experts-section{padding:80px 0;background:#F8F9FA}
.experts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:30px}
.expert-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 5px 20px rgba(0,0,0,.06);transition:all .4s}
.expert-card:hover{transform:translateY(-8px);box-shadow:0 15px 40px rgba(0,0,0,.12)}
.expert-img{height:320px;overflow:hidden}
.expert-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.expert-card:hover .expert-img img{transform:scale(1.05)}
.expert-info{padding:20px}
.expert-info h4{font-size:1.1rem;color:#1D3557;margin-bottom:5px}
.expert-info .title{font-size:13px;color:#E63946;margin-bottom:10px;font-weight:600}
.expert-info p{font-size:13px;color:#666;line-height:1.7;margin-bottom:12px}
.expert-btns{display:flex;gap:10px}
.expert-btns a{font-size:13px;padding:6px 16px;border-radius:20px;transition:all .3s}
.expert-btns .btn-sm-primary{background:#E63946;color:#fff}
.expert-btns .btn-sm-primary:hover{background:#c62d39}
.expert-btns .btn-sm-outline{border:1px solid #1D3557;color:#1D3557}
.expert-btns .btn-sm-outline:hover{background:#1D3557;color:#fff}

/* === 合作品牌 === */
.partners-section{padding:60px 0;background:#fff}
.partners-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-logo{width:140px;height:70px;background:#F8F9FA;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;color:#999;font-weight:600;transition:all .3s;border:1px solid #eee}
.partner-logo:hover{box-shadow:0 5px 20px rgba(0,0,0,.1);border-color:#E63946;color:#1D3557}

/* === 用户评价 === */
.reviews-section{padding:80px 0;background:#F8F9FA}
.reviews-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.review-card{background:#fff;border-radius:12px;padding:30px;box-shadow:0 3px 15px rgba(0,0,0,.05);transition:all .3s;border-left:4px solid #E63946}
.review-card:hover{transform:translateY(-5px);box-shadow:0 10px 30px rgba(0,0,0,.1)}
.review-stars{color:#F4A261;font-size:16px;margin-bottom:12px}
.review-text{font-size:14px;color:#555;line-height:1.8;margin-bottom:15px;font-style:italic}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:#E63946;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}
.review-name{font-size:14px;color:#1D3557;font-weight:600}
.review-date{font-size:12px;color:#999}

/* === FAQ === */
.faq-section{padding:80px 0;background:#fff}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid #eee;border-radius:10px;margin-bottom:15px;overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:#E63946}
.faq-question{padding:18px 25px;font-size:15px;font-weight:600;color:#1D3557;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:all .3s;background:#fff}
.faq-question:hover{color:#E63946}
.faq-question .arrow{transition:transform .3s;font-size:20px;color:#E63946}
.faq-item.active .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;background:#fafafa}
.faq-item.active .faq-answer{max-height:300px}
.faq-answer p{padding:0 25px 18px;font-size:14px;color:#666;line-height:1.8}

/* === 联系我们 === */
.contact-section{padding:80px 0;background:#F8F9FA}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info{background:#fff;border-radius:16px;padding:35px;box-shadow:0 5px 20px rgba(0,0,0,.06)}
.contact-info h3{font-size:1.3rem;color:#1D3557;margin-bottom:20px}
.contact-item{display:flex;gap:15px;margin-bottom:20px;align-items:flex-start}
.contact-icon{width:45px;height:45px;background:linear-gradient(135deg,#E63946,#F4A261);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;flex-shrink:0}
.contact-detail h5{font-size:14px;color:#1D3557;margin-bottom:3px}
.contact-detail p{font-size:13px;color:#666}
.qrcode-area{display:flex;gap:30px;margin-top:20px}
.qrcode-box{text-align:center}
.qrcode-box img{width:150px;height:150px;border-radius:8px;border:2px solid #eee}
.qrcode-box p{font-size:13px;color:#666;margin-top:8px}

/* === 页脚 === */
.footer{background:#0D1117;color:rgba(255,255,255,.7);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand img{height:45px;margin-bottom:15px}
.footer-brand p{font-size:13px;line-height:1.8;color:rgba(255,255,255,.6)}
.footer h5{font-size:15px;color:#fff;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer h5::after{content:"";position:absolute;bottom:0;left:0;width:30px;height:2px;background:#E63946}
.footer ul li{margin-bottom:10px}
.footer ul li a{font-size:13px;color:rgba(255,255,255,.6);transition:all .3s}
.footer ul li a:hover{color:#E63946;padding-left:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:13px}
.footer-bottom a{color:#F4A261}
.footer-social{display:flex;gap:12px;margin-top:15px}
.footer-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;transition:all .3s}
.footer-social a:hover{background:#E63946;transform:translateY(-3px)}

/* === 分享按钮 === */
.share-bar{position:fixed;right:20px;top:50%;transform:translateY(-50%);z-index:999;display:flex;flex-direction:column;gap:8px}
.share-btn{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;transition:all .3s;box-shadow:0 3px 10px rgba(0,0,0,.2);cursor:pointer}
.share-btn:hover{transform:scale(1.15)}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#000}
.share-bilibili{background:#00A1D6}

/* === 面包屑 === */
.breadcrumb{padding:15px 0;font-size:13px;color:#999;background:#fff;border-bottom:1px solid #eee}
.breadcrumb a{color:#1D3557}
.breadcrumb a:hover{color:#E63946}
.breadcrumb span{margin:0 8px;color:#ccc}

/* === 内页通用 === */
.page-hero{height:300px;background:linear-gradient(135deg,#1D3557,#0D1117);display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:url('../images/video-bg.jpg') center/cover;opacity:.3}
.page-hero h1{font-size:2.5rem;position:relative;z-index:2}
.page-hero p{font-size:1.1rem;color:rgba(255,255,255,.8);margin-top:10px;position:relative;z-index:2}
.page-content{padding:60px 0}

/* === 响应式 === */
@media(max-width:992px){
  .hero{height:500px}
  .hero-content{padding:0 30px}
  .hero-content h1{font-size:2.2rem}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .experts-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-menu{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;box-shadow:0 10px 30px rgba(0,0,0,.1);padding:10px 0}
  .nav-menu.active{display:flex}
  .nav-menu a{padding:12px 25px;border-bottom:1px solid #f0f0f0}
  .nav-toggle{display:flex}
  .hero{height:450px}
  .hero-content{padding:0 20px}
  .hero-content h1{font-size:1.8rem}
  .hero-btns{flex-direction:column;gap:10px}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:15px}
  .services-grid{grid-template-columns:1fr}
  .experts-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .share-bar{right:10px}
  .share-btn{width:36px;height:36px;font-size:14px}
  .top-header .container{flex-direction:column;gap:5px;text-align:center}
  .qrcode-area{flex-direction:column;align-items:center}
}
@media(max-width:480px){
  .hero{height:400px}
  .hero-content h1{font-size:1.5rem}
  .video-grid{grid-template-columns:1fr}
  .section-title h2{font-size:1.5rem}
  .container{padding:0 15px}
}

/* === 动画 === */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeInUp .6s ease forwards;opacity:0}
.delay-1{animation-delay:.1s}
.delay-2{animation-delay:.2s}
.delay-3{animation-delay:.3s}
.delay-4{animation-delay:.4s}

/* === 回到顶部 === */
.back-to-top{position:fixed;bottom:30px;right:20px;width:45px;height:45px;background:#E63946;color:#fff;border-radius:50%;display:none;align-items:center;justify-content:center;font-size:20px;cursor:pointer;z-index:999;transition:all .3s;box-shadow:0 3px 15px rgba(230,57,70,.4)}
.back-to-top:hover{background:#c62d39;transform:translateY(-3px)}
.back-to-top.show{display:flex}

/* === How-To 指南 === */
.howto-section{padding:80px 0;background:#fff}
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:25px;counter-reset:step}
.howto-step{background:#F8F9FA;border-radius:12px;padding:30px;text-align:center;position:relative;counter-increment:step;transition:all .3s}
.howto-step:hover{background:#fff;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.howto-step::before{content:counter(step);display:block;width:50px;height:50px;background:#E63946;color:#fff;border-radius:50%;font-size:22px;font-weight:700;line-height:50px;margin:0 auto 15px}
.howto-step h5{font-size:15px;color:#1D3557;margin-bottom:8px}
.howto-step p{font-size:13px;color:#666}

/* === 懒加载 === */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}