/* ========================================
   潘多拉魔盒视频 - 全站样式表
   品牌：潘多拉魔盒视频 | zvrzbpvv.cn
   ======================================== */

/* CSS Reset & Base */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Microsoft YaHei','PingFang SC','Helvetica Neue',Arial,sans-serif;color:#333;background:#0a0a0a;line-height:1.8;overflow-x:hidden}
a{color:#d4a843;text-decoration:none;transition:color .3s}
a:hover{color:#f0c866}
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}

/* Container */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.container-fluid{max-width:1400px;margin:0 auto;padding:0 20px}

/* ========== Header / Navigation ========== */
.site-header{background:rgba(10,10,10,.97);position:fixed;top:0;left:0;width:100%;z-index:1000;border-bottom:1px solid rgba(212,168,67,.2);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1400px;margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:50px;width:auto}
.logo-text{font-size:1.2rem;font-weight:700;color:#d4a843;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{padding:12px 16px;font-size:.95rem;color:#ccc;transition:all .3s;position:relative}
.main-nav a:hover,.main-nav a.active{color:#d4a843}
.main-nav a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:#d4a843;transition:width .3s}
.main-nav a:hover::after,.main-nav a.active::after{width:60%}
.mobile-toggle{display:none;font-size:1.5rem;color:#d4a843;cursor:pointer;background:none;border:none}

/* Search Box */
.search-bar{background:rgba(20,20,20,.9);padding:10px 0;border-bottom:1px solid rgba(212,168,67,.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;border:1px solid rgba(212,168,67,.3);border-right:none;border-radius:25px 0 0 25px;background:rgba(30,30,30,.9);color:#fff;font-size:.9rem;outline:none}
.search-box input:focus{border-color:#d4a843}
.search-box input::placeholder{color:#666}
.search-box button{padding:10px 24px;background:linear-gradient(135deg,#d4a843,#b8860b);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:.9rem;transition:opacity .3s}
.search-box button:hover{opacity:.85}

/* Breadcrumb */
.breadcrumb{padding:15px 0;font-size:.85rem;color:#888}
.breadcrumb a{color:#d4a843}
.breadcrumb span{margin:0 8px;color:#555}

/* ========== Banner ========== */
.hero-banner{position:relative;height:85vh;min-height:500px;overflow:hidden;margin-top:70px}
.hero-banner .banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat}
.hero-banner .banner-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,10,.4) 0%,rgba(10,10,10,.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:3rem;margin-bottom:15px;background:linear-gradient(135deg,#d4a843,#f0c866);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content .hero-subtitle{font-size:1.3rem;color:#ccc;margin-bottom:10px}
.hero-content .hero-desc{font-size:1rem;color:#999;max-width:700px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:25px}
.hero-tags span{padding:5px 15px;background:rgba(212,168,67,.15);border:1px solid rgba(212,168,67,.3);border-radius:20px;font-size:.8rem;color:#d4a843}
.hero-btns{display:flex;gap:15px;flex-wrap:wrap;justify-content:center}
.btn-primary{padding:12px 35px;background:linear-gradient(135deg,#d4a843,#b8860b);color:#fff;border:none;border-radius:30px;font-size:1rem;cursor:pointer;transition:all .3s;display:inline-block}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(212,168,67,.3);color:#fff}
.btn-outline{padding:12px 35px;background:transparent;color:#d4a843;border:1px solid #d4a843;border-radius:30px;font-size:1rem;cursor:pointer;transition:all .3s;display:inline-block}
.btn-outline:hover{background:rgba(212,168,67,.1);color:#f0c866}

/* ========== Section Common ========== */
.section{padding:70px 0}
.section-dark{background:#0a0a0a}
.section-darker{background:#060606}
.section-alt{background:#111}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:2rem;margin-bottom:10px;color:#fff}
.section-title h2 .gold{color:#d4a843}
.section-title p{color:#888;font-size:1rem;max-width:600px;margin:0 auto}
.section-title .divider{width:60px;height:3px;background:linear-gradient(90deg,#d4a843,#b8860b);margin:15px auto 0;border-radius:2px}

/* ========== Video Card Grid ========== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:25px}
.video-card{background:#161616;border-radius:12px;overflow:hidden;transition:all .3s;border:1px solid rgba(212,168,67,.08)}
.video-card:hover{transform:translateY(-5px);box-shadow:0 15px 40px rgba(212,168,67,.15);border-color:rgba(212,168,67,.2)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;cursor:pointer}
.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(1.05)}
.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 .play-btn{opacity:1}
.play-btn .play-icon{width:60px;height:60px;background:rgba(212,168,67,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s}
.play-btn .play-icon::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:4px}
.play-btn:hover .play-icon{transform:scale(1.1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:15px}
.video-info h3{font-size:1rem;color:#eee;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info h3 a{color:#eee}
.video-info h3 a:hover{color:#d4a843}
.video-meta{display:flex;gap:15px;font-size:.8rem;color:#777}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.video-tags span{font-size:.7rem;padding:2px 8px;background:rgba(212,168,67,.1);color:#d4a843;border-radius:10px}

/* ========== Expert / Team Cards ========== */
.team-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.team-card{background:#161616;border-radius:12px;padding:30px;text-align:center;border:1px solid rgba(212,168,67,.08);transition:all .3s}
.team-card:hover{border-color:rgba(212,168,67,.3);transform:translateY(-3px)}
.team-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 15px;background:linear-gradient(135deg,#d4a843,#b8860b);display:flex;align-items:center;justify-content:center;font-size:2rem;color:#fff;overflow:hidden}
.team-avatar img{width:100%;height:100%;object-fit:cover}
.team-card h4{color:#fff;font-size:1.1rem;margin-bottom:5px}
.team-card .role{color:#d4a843;font-size:.85rem;margin-bottom:10px}
.team-card p{color:#888;font-size:.85rem;line-height:1.6}
.team-card .team-links{margin-top:15px;display:flex;gap:10px;justify-content:center}
.team-card .team-links a{padding:6px 16px;border:1px solid rgba(212,168,67,.3);border-radius:20px;font-size:.8rem;color:#d4a843;transition:all .3s}
.team-card .team-links a:hover{background:rgba(212,168,67,.1)}

/* ========== FAQ ========== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#161616;border-radius:10px;margin-bottom:12px;border:1px solid rgba(212,168,67,.08);overflow:hidden}
.faq-question{padding:18px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:#eee;font-size:1rem;transition:background .3s}
.faq-question:hover{background:rgba(212,168,67,.05)}
.faq-question .arrow{color:#d4a843;transition:transform .3s;font-size:1.2rem}
.faq-item.active .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 25px}
.faq-item.active .faq-answer{max-height:300px;padding:0 25px 18px}
.faq-answer p{color:#999;font-size:.9rem;line-height:1.8}

/* ========== Reviews / Testimonials ========== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.review-card{background:#161616;border-radius:12px;padding:25px;border:1px solid rgba(212,168,67,.08)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:15px}
.review-avatar{width:45px;height:45px;border-radius:50%;background:linear-gradient(135deg,#d4a843,#b8860b);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1rem}
.review-name{color:#eee;font-size:.95rem}
.review-date{color:#666;font-size:.75rem}
.review-stars{color:#d4a843;font-size:.85rem;margin-bottom:10px;letter-spacing:2px}
.review-text{color:#999;font-size:.9rem;line-height:1.7}

/* ========== Community Module ========== */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.community-card{background:#161616;border-radius:12px;padding:25px;text-align:center;border:1px solid rgba(212,168,67,.08);transition:all .3s}
.community-card:hover{border-color:rgba(212,168,67,.3);transform:translateY(-3px)}
.community-icon{font-size:2.5rem;margin-bottom:15px}
.community-card h4{color:#fff;margin-bottom:8px}
.community-card p{color:#888;font-size:.85rem}
.community-card .count{color:#d4a843;font-size:.8rem;margin-top:10px}

/* ========== AI Module ========== */
.ai-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:25px}
.ai-card{background:linear-gradient(145deg,#161616,#1a1a2e);border-radius:12px;padding:30px;border:1px solid rgba(100,100,255,.1);transition:all .3s}
.ai-card:hover{border-color:rgba(100,100,255,.3);box-shadow:0 10px 30px rgba(100,100,255,.1)}
.ai-card h4{color:#7b8cff;font-size:1.1rem;margin-bottom:10px}
.ai-card p{color:#999;font-size:.9rem;line-height:1.7}

/* ========== Partner Logo Wall ========== */
.partner-logos{display:flex;flex-wrap:wrap;gap:30px;justify-content:center;align-items:center}
.partner-logos .partner-item{background:#161616;padding:20px 30px;border-radius:10px;border:1px solid rgba(212,168,67,.08);font-size:1.1rem;color:#888;font-weight:700;transition:all .3s}
.partner-logos .partner-item:hover{border-color:rgba(212,168,67,.3);color:#d4a843}

/* ========== How-To Guide ========== */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:25px;counter-reset:step}
.howto-step{background:#161616;border-radius:12px;padding:30px;text-align:center;border:1px solid rgba(212,168,67,.08);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-15px;left:50%;transform:translateX(-50%);width:35px;height:35px;background:linear-gradient(135deg,#d4a843,#b8860b);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1rem}
.howto-step h4{color:#fff;margin:10px 0;font-size:1rem}
.howto-step p{color:#888;font-size:.85rem}

/* ========== Contact ========== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:25px}
.contact-card{background:#161616;border-radius:12px;padding:30px;border:1px solid rgba(212,168,67,.08)}
.contact-card h4{color:#d4a843;margin-bottom:15px;font-size:1.1rem}
.contact-card p{color:#999;font-size:.9rem;margin-bottom:8px}
.contact-card .highlight{color:#d4a843}

/* ========== Share Buttons ========== */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.share-btn{padding:8px 20px;border-radius:25px;font-size:.85rem;color:#fff;transition:all .3s;cursor:pointer;border:none}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00a1d6}
.share-btn:hover{opacity:.85;transform:translateY(-2px)}

/* ========== Footer ========== */
.site-footer{background:#060606;border-top:1px solid rgba(212,168,67,.15);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:40px}
.footer-col h5{color:#d4a843;font-size:1rem;margin-bottom:15px}
.footer-col p,.footer-col a{color:#888;font-size:.85rem;display:block;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:#d4a843}
.footer-qr{display:flex;gap:20px;margin-top:10px}
.footer-qr img{width:100px;height:100px;border-radius:8px;border:1px solid rgba(212,168,67,.2)}
.footer-bottom{border-top:1px solid rgba(212,168,67,.1);padding:20px 0;text-align:center}
.footer-bottom p{color:#666;font-size:.8rem}
.footer-bottom .update-time{color:#888;font-size:.75rem;margin-top:5px}

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

/* ========== Responsive ========== */
@media(max-width:992px){
  .main-nav{display:none;position:absolute;top:100%;left:0;width:100%;background:rgba(10,10,10,.98);flex-direction:column;padding:15px 0;border-top:1px solid rgba(212,168,67,.2)}
  .main-nav.show{display:flex}
  .main-nav a{padding:12px 25px;border-bottom:1px solid rgba(255,255,255,.03)}
  .mobile-toggle{display:block}
  .hero-content h1{font-size:2rem}
  .hero-content .hero-subtitle{font-size:1rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
  .header-inner{padding:8px 15px}
}
@media(max-width:768px){
  .hero-banner{height:70vh;min-height:400px}
  .hero-content h1{font-size:1.6rem}
  .section{padding:50px 0}
  .section-title h2{font-size:1.5rem}
  .video-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .ai-features{grid-template-columns:1fr}
}
@media(max-width:480px){
  .hero-content h1{font-size:1.3rem}
  .hero-btns{flex-direction:column;align-items:center}
  .footer-grid{grid-template-columns:1fr}
  .search-box{margin:0 10px}
}

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

/* ========== MCP Frontend Placeholder ========== */
.mcp-widget{background:#161616;border-radius:12px;padding:20px;border:1px solid rgba(212,168,67,.08);margin-top:20px}
.mcp-widget .mcp-header{display:flex;align-items:center;gap:10px;margin-bottom:15px}
.mcp-widget .mcp-status{width:8px;height:8px;border-radius:50%;background:#07c160}
.mcp-widget .mcp-title{color:#eee;font-size:.9rem}
.mcp-widget .mcp-body{color:#888;font-size:.85rem}