/* ============================================
   无限臀山 - 原创样式表
   品牌色系：活力橙 #FF6B35 / 深夜蓝 #1A1A2E / 电竞红 #E94560
   ============================================ */

/* === 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","Helvetica Neue",Arial,sans-serif;background:#0F0F1A;color:#EAEAEA;line-height:1.7;overflow-x:hidden}
a{color:#FF6B35;text-decoration:none;transition:color .3s}
a:hover{color:#E94560}
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:#fff}

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

/* === 头部导航 === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(15,15,26,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,107,53,.15);transition:all .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;max-width:1200px;margin:0 auto;padding:0 20px}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{height:42px;width:auto}
.site-logo span{font-size:1.3rem;font-weight:700;background:linear-gradient(135deg,#FF6B35,#E94560);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 14px;border-radius:6px;font-size:.9rem;color:#ccc;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(255,107,53,.15)}
.mobile-menu-btn{display:none;background:none;border:none;color:#FF6B35;font-size:1.5rem;cursor:pointer}

/* === 搜索框 === */
.search-bar{background:rgba(26,26,46,.8);padding:15px 0;border-bottom:1px solid rgba(255,107,53,.1)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,107,53,.3);border-radius:25px 0 0 25px;color:#eee;font-size:.95rem;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#FF6B35}
.search-box input::placeholder{color:#777}
.search-box button{padding:10px 24px;background:linear-gradient(135deg,#FF6B35,#E94560);border:none;border-radius:0 25px 25px 0;color:#fff;font-size:.95rem;cursor:pointer;transition:opacity .3s}
.search-box button:hover{opacity:.85}

/* === Banner区域 === */
.hero-banner{position:relative;height:520px;margin-top:70px;overflow:hidden}
.hero-banner .banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.55)}
.hero-banner .banner-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,15,26,.3) 0%,rgba(15,15,26,.85) 100%)}
.hero-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:0 20px}
.hero-content h1{font-size:2.8rem;margin-bottom:15px;background:linear-gradient(135deg,#FF6B35,#E94560);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content p{font-size:1.15rem;color:#ccc;max-width:700px;margin-bottom:25px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.hero-tags span{padding:6px 16px;background:rgba(255,107,53,.12);border:1px solid rgba(255,107,53,.3);border-radius:20px;font-size:.85rem;color:#FF6B35}

/* === 通用模块标题 === */
.section{padding:60px 0}
.section-header{text-align:center;margin-bottom:40px}
.section-header h2{font-size:2rem;margin-bottom:10px;position:relative;display:inline-block}
.section-header h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#FF6B35,#E94560);margin:10px auto 0;border-radius:2px}
.section-header p{color:#999;font-size:1rem;margin-top:8px}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{position:relative;border-radius:12px;overflow:hidden;background:#161628;transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(255,107,53,.15)}
.video-card .thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .thumb img{transform:scale(1.05)}
.video-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(255,107,53,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.video-card:hover .play-btn{opacity:1}
.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-card .card-info{padding:14px 16px}
.video-card .card-info h3{font-size:1rem;margin-bottom:6px;color:#eee;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-meta{display:flex;gap:12px;font-size:.8rem;color:#888}
.video-card .card-meta span{display:flex;align-items:center;gap:4px}
.video-card .tag{position:absolute;top:10px;left:10px;padding:3px 10px;background:rgba(233,69,96,.85);border-radius:4px;font-size:.75rem;color:#fff;z-index:2}

/* === AI赋能模块 === */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:linear-gradient(145deg,#161628,#1A1A2E);border:1px solid rgba(255,107,53,.12);border-radius:12px;padding:30px 24px;text-align:center;transition:all .3s}
.ai-card:hover{border-color:rgba(255,107,53,.4);box-shadow:0 8px 25px rgba(255,107,53,.1)}
.ai-card .ai-icon{font-size:2.5rem;margin-bottom:15px}
.ai-card h3{font-size:1.15rem;margin-bottom:10px;color:#FF6B35}
.ai-card p{font-size:.9rem;color:#aaa;line-height:1.6}

/* === 社区模块 === */
.community-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.community-card{border-radius:12px;overflow:hidden;background:#161628;transition:transform .3s}
.community-card:hover{transform:translateY(-4px)}
.community-card .thumb{position:relative;padding-top:56.25%;overflow:hidden}
.community-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.community-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:48px;height:48px;background:rgba(255,107,53,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.community-card:hover .play-btn{opacity:1}
.community-card .play-btn::after{content:'';display:block;width:0;height:0;border-style:solid;border-width:8px 0 8px 14px;border-color:transparent transparent transparent #fff;margin-left:2px}
.community-card .card-info{padding:12px 14px}
.community-card .card-info h4{font-size:.95rem;color:#eee;margin-bottom:4px}
.community-card .card-info p{font-size:.8rem;color:#888}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#161628;border-radius:12px;overflow:hidden;text-align:center;padding:24px 16px;border:1px solid rgba(255,107,53,.08);transition:all .3s}
.expert-card:hover{border-color:rgba(255,107,53,.3);transform:translateY(-4px)}
.expert-card .avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 15px;overflow:hidden;border:3px solid rgba(255,107,53,.3)}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.05rem;color:#fff;margin-bottom:4px}
.expert-card .role{font-size:.85rem;color:#FF6B35;margin-bottom:10px}
.expert-card p{font-size:.82rem;color:#999;line-height:1.5;margin-bottom:12px}
.expert-card .expert-btn{display:inline-block;padding:6px 18px;border:1px solid #FF6B35;border-radius:20px;color:#FF6B35;font-size:.82rem;transition:all .3s}
.expert-card .expert-btn:hover{background:#FF6B35;color:#fff}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#161628;border-radius:12px;padding:24px;border-left:3px solid #FF6B35}
.review-card .stars{color:#FF6B35;font-size:1rem;margin-bottom:8px;letter-spacing:2px}
.review-card blockquote{font-size:.95rem;color:#ccc;line-height:1.7;margin-bottom:12px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer-name{font-size:.9rem;color:#fff}
.review-card .reviewer-date{font-size:.8rem;color:#777}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#161628;border-radius:10px;margin-bottom:12px;overflow:hidden;border:1px solid rgba(255,107,53,.08)}
.faq-item .faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:1rem;color:#eee;transition:background .3s}
.faq-item .faq-q:hover{background:rgba(255,107,53,.05)}
.faq-item .faq-q .arrow{transition:transform .3s;color:#FF6B35;font-size:1.2rem}
.faq-item.active .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 20px}
.faq-item.active .faq-a{max-height:300px;padding:0 20px 16px}
.faq-item .faq-a p{font-size:.9rem;color:#aaa;line-height:1.7}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:#161628;border-radius:12px;padding:24px;text-align:center;border:1px solid rgba(255,107,53,.08)}
.contact-card h4{font-size:1.05rem;color:#FF6B35;margin-bottom:12px}
.contact-card p{font-size:.9rem;color:#bbb;line-height:1.7}
.contact-card img{max-width:160px;margin:10px auto;border-radius:8px}

/* === 合作品牌 === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;padding:20px 0}
.partner-wall .partner-item{width:120px;height:60px;background:rgba(255,255,255,.05);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.85rem;color:#888;border:1px solid rgba(255,107,53,.1);transition:all .3s}
.partner-wall .partner-item:hover{border-color:#FF6B35;color:#FF6B35}

/* === How-To指南 === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.howto-step{text-align:center;padding:20px}
.howto-step .step-num{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B35,#E94560);color:#fff;font-size:1.3rem;font-weight:700;margin-bottom:12px}
.howto-step h4{font-size:1rem;color:#eee;margin-bottom:6px}
.howto-step p{font-size:.85rem;color:#999}

/* === 社交分享 === */
.share-bar{display:flex;justify-content:center;gap:16px;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:25px;font-size:.85rem;color:#fff;transition:opacity .3s;cursor:pointer}
.share-btn:hover{opacity:.8;color:#fff}
.share-btn.wechat{background:#07C160}
.share-btn.weibo{background:#E6162D}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00A1D6}

/* === 页脚 === */
.site-footer{background:#0A0A15;border-top:1px solid rgba(255,107,53,.1);padding:40px 0 20px}
.footer-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h5{font-size:1rem;color:#FF6B35;margin-bottom:15px}
.footer-col p,.footer-col a{font-size:.85rem;color:#888;line-height:2}
.footer-col a:hover{color:#FF6B35}
.footer-logo{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-logo img{height:36px}
.footer-logo span{font-size:1.1rem;font-weight:700;color:#FF6B35}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(255,107,53,.08);font-size:.82rem;color:#666}
.footer-qr{display:flex;gap:20px;justify-content:center;margin:20px 0}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:120px;border-radius:8px;margin-bottom:6px}
.footer-qr .qr-item span{font-size:.8rem;color:#888}

/* === 面包屑 === */
.breadcrumb{padding:15px 0;font-size:.85rem;color:#888}
.breadcrumb a{color:#FF6B35}
.breadcrumb span{margin:0 6px;color:#555}

/* === 内页通用 === */
.page-hero{height:280px;margin-top:70px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center}
.page-hero .banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.4)}
.page-hero .banner-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,15,26,.4),rgba(15,15,26,.9))}
.page-hero h1{position:relative;z-index:2;font-size:2.2rem;background:linear-gradient(135deg,#FF6B35,#E94560);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.page-content{padding:40px 0 60px}

/* === 游戏传媒标签 === */
.media-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;justify-content:center}
.media-tags .tag-item{padding:8px 20px;background:rgba(255,107,53,.08);border:1px solid rgba(255,107,53,.2);border-radius:25px;font-size:.88rem;color:#ccc;cursor:pointer;transition:all .3s}
.media-tags .tag-item:hover,.media-tags .tag-item.active{background:rgba(255,107,53,.2);border-color:#FF6B35;color:#FF6B35}

/* === 数据统计条 === */
.stats-bar{display:flex;justify-content:center;gap:40px;padding:30px 0;margin:20px 0;background:rgba(255,107,53,.03);border-radius:12px}
.stat-item{text-align:center}
.stat-item .num{font-size:2rem;font-weight:700;background:linear-gradient(135deg,#FF6B35,#E94560);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-item .label{font-size:.85rem;color:#888;margin-top:4px}

/* === MCP前端代码区 === */
.mcp-widget{background:#161628;border:1px solid rgba(255,107,53,.1);border-radius:12px;padding:24px;margin:20px 0}
.mcp-widget h4{color:#FF6B35;margin-bottom:12px}
.mcp-widget .mcp-status{display:flex;align-items:center;gap:8px;font-size:.9rem;color:#aaa}
.mcp-widget .mcp-dot{width:8px;height:8px;border-radius:50%;background:#07C160;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* === 懒加载占位 === */
.lazy-placeholder{background:linear-gradient(90deg,#161628 25%,#1e1e38 50%,#161628 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:8px}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* === 响应式 === */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .community-grid{grid-template-columns:repeat(2,1fr)}
  .ai-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .header-inner{height:60px}
  .main-nav{display:none;position:absolute;top:60px;left:0;width:100%;background:rgba(15,15,26,.98);flex-direction:column;padding:15px 20px;gap:4px}
  .main-nav.show{display:flex}
  .mobile-menu-btn{display:block}
  .hero-banner{height:400px}
  .hero-content h1{font-size:1.8rem}
  .hero-content p{font-size:.95rem}
  .video-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .stats-bar{flex-wrap:wrap;gap:20px}
  .howto-steps{grid-template-columns:1fr}
  .section{padding:40px 0}
  .section-header h2{font-size:1.5rem}
}
@media(max-width:480px){
  .community-grid{grid-template-columns:1fr}
  .hero-banner{height:320px}
  .hero-content h1{font-size:1.5rem}
  .search-box input{font-size:.85rem;padding:8px 14px}
}

/* === 更新提示条 === */
.update-notice{display:flex;align-items:center;gap:10px;padding:12px 20px;margin:15px 0;background:rgba(255,107,53,.06);border:1px solid rgba(255,107,53,.15);border-radius:8px;font-size:.88rem;color:#ccc}
.update-dot{width:8px;height:8px;border-radius:50%;background:#07C160;flex-shrink:0;animation:pulse 2s infinite}

/* === 内容介绍段落 === */
.content-intro{max-width:900px;margin:0 auto 30px;text-align:center}
.content-intro p{color:#aaa;line-height:1.9;font-size:.98rem;margin-bottom:12px}

/* === 视频卡片作者信息 === */
.card-author{font-size:.78rem;color:#999;margin-top:6px;padding-top:6px;border-top:1px solid rgba(255,255,255,.05)}

/* === 推荐卡片网格 === */
.recommend-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.recommend-card{display:block;border-radius:12px;overflow:hidden;background:#161628;transition:transform .3s,box-shadow .3s;text-decoration:none}
.recommend-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(255,107,53,.12);color:#fff}
.recommend-card img{width:100%;height:160px;object-fit:cover;transition:transform .4s}
.recommend-card:hover img{transform:scale(1.05)}
.recommend-info{padding:14px 16px}
.recommend-info h4{font-size:.95rem;color:#eee;margin-bottom:4px}
.recommend-info p{font-size:.8rem;color:#888}

/* === 时间线 === */
.timeline{position:relative;max-width:800px;margin:0 auto;padding-left:40px}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,#FF6B35,#E94560)}
.timeline-item{position:relative;margin-bottom:35px;padding-left:30px}
.timeline-item::before{content:'';position:absolute;left:-33px;top:6px;width:14px;height:14px;border-radius:50%;background:#FF6B35;border:3px solid #0F0F1A;z-index:1}
.timeline-year{font-size:1.3rem;font-weight:700;color:#FF6B35;margin-bottom:6px}
.timeline-content h4{font-size:1.05rem;color:#eee;margin-bottom:4px}
.timeline-content p{font-size:.9rem;color:#aaa;line-height:1.7}

/* === 统计卡片 === */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.stat-card{background:linear-gradient(145deg,#161628,#1A1A2E);border:1px solid rgba(255,107,53,.12);border-radius:12px;padding:30px 20px;text-align:center;transition:all .3s}
.stat-card:hover{border-color:rgba(255,107,53,.4);box-shadow:0 8px 25px rgba(255,107,53,.1)}
.stat-num{font-size:2rem;font-weight:700;background:linear-gradient(135deg,#FF6B35,#E94560);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:6px}
.stat-label{font-size:.9rem;color:#999}

/* === 推荐卡片响应式 === */
@media(max-width:1024px){
  .recommend-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .recommend-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .timeline{padding-left:30px}
  .timeline-item{padding-left:20px}
  .timeline-item::before{left:-23px}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr}
}