/* ============================================
   玩物社区 影视传媒视频社区 - 原创样式表
   品牌：玩物社区 | 域名：zengpen.cn
   配色：深紫黑+活力橙+青绿
   ============================================ */

/* --- CSS Reset & Base --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --c-bg:#0D0D1A;
  --c-bg2:#1A0A2E;
  --c-card:#1E1E3A;
  --c-card2:#252547;
  --c-orange:#FF6B35;
  --c-teal:#00D4AA;
  --c-pink:#FF3CAC;
  --c-text:#E8E6F0;
  --c-text2:#A8A5B8;
  --c-border:#2D2D55;
  --c-gradient:linear-gradient(135deg,#FF6B35,#FF3CAC);
  --c-gradient2:linear-gradient(135deg,#00D4AA,#0088FF);
  --shadow:0 4px 24px rgba(0,0,0,.35);
  --radius:12px;
  --max-w:1280px;
  --font:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--c-bg);color:var(--c-text);line-height:1.7;overflow-x:hidden}
a{color:var(--c-teal);text-decoration:none;transition:color .3s}
a:hover{color:var(--c-orange)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}

/* --- Header & Nav --- */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,13,26,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--c-border);transition:all .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;max-width:var(--max-w);margin:0 auto;padding:0 20px;height:68px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-text{font-size:1.5rem;font-weight:800;background:var(--c-gradient);-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 16px;border-radius:8px;font-size:.95rem;color:var(--c-text);transition:all .3s;font-weight:500}
.main-nav a:hover,.main-nav a.active{background:var(--c-card);color:var(--c-orange)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--c-text);border-radius:2px;transition:all .3s}

/* --- Search Bar --- */
.search-bar{background:var(--c-bg2);padding:16px 0;border-bottom:1px solid var(--c-border)}
.search-wrap{max-width:680px;margin:0 auto;display:flex;gap:0;position:relative}
.search-wrap input{flex:1;padding:12px 20px;background:var(--c-card);border:2px solid var(--c-border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);color:var(--c-text);font-size:1rem;outline:none;transition:border-color .3s}
.search-wrap input:focus{border-color:var(--c-orange)}
.search-wrap input::placeholder{color:var(--c-text2)}
.search-wrap button{padding:12px 28px;background:var(--c-gradient);border:none;border-radius:0 var(--radius) var(--radius) 0;color:#fff;font-size:1rem;cursor:pointer;font-weight:600;transition:opacity .3s}
.search-wrap button:hover{opacity:.85}

/* --- Hero Banner --- */
.hero{position:relative;overflow:hidden;margin-top:68px}
.hero-bg{width:100%;height:520px;object-fit:cover;filter:brightness(.65)}
.hero-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:20px;background:linear-gradient(to bottom,rgba(13,13,26,.3),rgba(13,13,26,.8))}
.hero h1{font-size:2.8rem;font-weight:900;margin-bottom:12px;text-shadow:0 2px 12px rgba(0,0,0,.5)}
.hero h1 .brand{color:var(--c-orange)}
.hero p{font-size:1.2rem;color:var(--c-text2);max-width:640px;margin-bottom:24px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;border-radius:50px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;border:none}
.btn-primary{background:var(--c-gradient);color:#fff;box-shadow:0 4px 20px rgba(255,107,53,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 28px rgba(255,107,53,.5);color:#fff}
.btn-outline{background:transparent;color:var(--c-text);border:2px solid var(--c-teal)}
.btn-outline:hover{background:var(--c-teal);color:#0D0D1A}

/* --- Section Common --- */
.section{padding:72px 0}
.section-header{text-align:center;margin-bottom:48px}
.section-header h2{font-size:2rem;font-weight:800;margin-bottom:12px}
.section-header h2 .hl{color:var(--c-orange)}
.section-header p{color:var(--c-text2);max-width:600px;margin:0 auto;font-size:1.05rem}
.section-alt{background:var(--c-bg2)}

/* --- Video Cards Grid --- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.video-card{background:var(--c-card);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s;cursor:pointer;position:relative}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.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 span{width:56px;height:56px;background:var(--c-gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(255,107,53,.4)}
.play-btn span::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-info{padding:16px}
.video-info h3{font-size:1.05rem;font-weight:700;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:16px;font-size:.85rem;color:var(--c-text2)}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:3px 10px;background:var(--c-card2);border-radius:20px;font-size:.78rem;color:var(--c-teal);margin-top:8px}

/* --- Service Cards --- */
.service-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.service-card{background:var(--c-card);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:transform .3s,box-shadow .3s;border:1px solid transparent}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--c-orange)}
.service-icon{width:64px;height:64px;margin:0 auto 20px;background:var(--c-gradient);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.service-card h3{font-size:1.15rem;font-weight:700;margin-bottom:10px}
.service-card p{color:var(--c-text2);font-size:.92rem;line-height:1.6}

/* --- AI Section --- */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:var(--c-card);border-radius:var(--radius);padding:28px;position:relative;overflow:hidden;transition:all .3s}
.ai-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:var(--c-gradient2)}
.ai-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.ai-card h3{font-size:1.1rem;font-weight:700;margin-bottom:10px;color:var(--c-teal)}
.ai-card p{color:var(--c-text2);font-size:.92rem}

/* --- Community Section --- */
.community-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.community-card{background:var(--c-card);border-radius:var(--radius);overflow:hidden;transition:all .3s}
.community-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.community-card img{width:100%;height:240px;object-fit:cover}
.community-card .card-body{padding:20px}
.community-card h3{font-size:1.15rem;font-weight:700;margin-bottom:8px}
.community-card p{color:var(--c-text2);font-size:.92rem}
.community-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.community-tags span{padding:4px 12px;background:var(--c-card2);border-radius:20px;font-size:.8rem;color:var(--c-teal)}

/* --- Expert Section --- */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:var(--c-card);border-radius:var(--radius);padding:24px;text-align:center;transition:all .3s}
.expert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.expert-card img{width:100px;height:100px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid var(--c-orange)}
.expert-card h3{font-size:1.05rem;font-weight:700;margin-bottom:4px}
.expert-card .role{color:var(--c-teal);font-size:.88rem;margin-bottom:10px}
.expert-card p{color:var(--c-text2);font-size:.85rem;margin-bottom:14px}
.expert-btns{display:flex;gap:8px;justify-content:center}
.expert-btns a{padding:6px 14px;border-radius:20px;font-size:.82rem;font-weight:600}
.expert-btns .btn-sm-primary{background:var(--c-gradient);color:#fff}
.expert-btns .btn-sm-outline{border:1px solid var(--c-teal);color:var(--c-teal)}

/* --- Partner Logos --- */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:32px;align-items:center}
.partner-wall .partner-item{width:140px;height:60px;background:var(--c-card);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:700;color:var(--c-text2);transition:all .3s;border:1px solid var(--c-border)}
.partner-wall .partner-item:hover{border-color:var(--c-orange);color:var(--c-orange)}

/* --- Reviews --- */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:var(--c-card);border-radius:var(--radius);padding:24px;position:relative}
.review-card::before{content:'\201C';position:absolute;top:12px;left:16px;font-size:3rem;color:var(--c-orange);opacity:.3;font-family:serif}
.review-stars{color:var(--c-orange);font-size:1rem;margin-bottom:10px;letter-spacing:2px}
.review-card p{color:var(--c-text2);font-size:.92rem;margin-bottom:14px;font-style:italic}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:var(--c-gradient);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;color:#fff}
.review-name{font-weight:600;font-size:.9rem}
.review-date{font-size:.78rem;color:var(--c-text2)}

/* --- FAQ --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--c-card);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;border:1px solid var(--c-border)}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:background .3s}
.faq-q:hover{background:var(--c-card2)}
.faq-q .arrow{transition:transform .3s;color:var(--c-orange);font-size:1.2rem}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 18px}
.faq-a p{color:var(--c-text2);font-size:.92rem;line-height:1.7}

/* --- Contact Section --- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info{background:var(--c-card);border-radius:var(--radius);padding:32px}
.contact-info h3{font-size:1.2rem;font-weight:700;margin-bottom:20px;color:var(--c-orange)}
.contact-item{display:flex;gap:12px;margin-bottom:16px;align-items:flex-start}
.contact-item .icon{width:36px;height:36px;background:var(--c-card2);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1rem}
.contact-item .info{font-size:.92rem}
.contact-item .info strong{display:block;margin-bottom:2px;color:var(--c-text)}
.contact-item .info span{color:var(--c-text2)}
.contact-qr{display:flex;gap:24px;margin-top:24px}
.contact-qr .qr-item{text-align:center}
.contact-qr .qr-item img{width:120px;height:120px;border-radius:8px;margin-bottom:8px}
.contact-qr .qr-item span{font-size:.82rem;color:var(--c-text2)}
.howto-box{background:var(--c-card);border-radius:var(--radius);padding:32px}
.howto-box h3{font-size:1.2rem;font-weight:700;margin-bottom:20px;color:var(--c-teal)}
.howto-steps{counter-reset:step}
.howto-step{counter-increment:step;padding:14px 0;border-bottom:1px solid var(--c-border);display:flex;gap:14px;align-items:flex-start}
.howto-step:last-child{border-bottom:none}
.howto-step::before{content:counter(step);width:32px;height:32px;background:var(--c-gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;flex-shrink:0;color:#fff}
.howto-step p{color:var(--c-text2);font-size:.92rem}
.howto-step p strong{color:var(--c-text)}

/* --- Share Buttons --- */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.share-btn{padding:8px 20px;border-radius:20px;font-size:.88rem;font-weight:600;cursor:pointer;transition:all .3s;border:1px solid var(--c-border);color:var(--c-text);background:var(--c-card)}
.share-btn:hover{border-color:var(--c-orange);color:var(--c-orange)}

/* --- Footer --- */
.site-footer{background:var(--c-bg2);border-top:1px solid var(--c-border);padding:48px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.footer-brand p{color:var(--c-text2);font-size:.9rem;margin-top:12px;line-height:1.7}
.footer-col h4{font-size:1rem;font-weight:700;margin-bottom:16px;color:var(--c-orange)}
.footer-col a{display:block;padding:4px 0;color:var(--c-text2);font-size:.9rem;transition:color .3s}
.footer-col a:hover{color:var(--c-teal)}
.footer-bottom{border-top:1px solid var(--c-border);padding:20px 0;text-align:center;font-size:.85rem;color:var(--c-text2)}
.footer-bottom .update-time{margin-top:4px;font-size:.82rem}

/* --- Breadcrumb --- */
.breadcrumb{padding:14px 0;font-size:.88rem;color:var(--c-text2)}
.breadcrumb a{color:var(--c-teal)}
.breadcrumb span{margin:0 8px;color:var(--c-text2)}

/* --- Page Hero (Inner Pages) --- */
.page-hero{background:var(--c-bg2);padding:100px 0 40px;text-align:center;margin-top:68px}
.page-hero h1{font-size:2.2rem;font-weight:800;margin-bottom:10px}
.page-hero p{color:var(--c-text2);font-size:1.05rem}

/* --- Responsive --- */
@media(max-width:1024px){
  .ai-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:68px;left:0;width:100%;background:rgba(13,13,26,.98);flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .3s;border-bottom:1px solid var(--c-border)}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:12px 16px;width:100%}
  .hero-bg{height:360px}
  .hero h1{font-size:1.8rem}
  .hero p{font-size:1rem}
  .video-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:48px 0}
  .section-header h2{font-size:1.6rem}
}
@media(max-width:480px){
  .expert-grid{grid-template-columns:1fr}
  .hero-btns{flex-direction:column;align-items:center}
  .header-inner{height:56px}
  .hero{margin-top:56px}
  .page-hero{margin-top:56px;padding:80px 0 30px}
}

/* --- Lazy Load Placeholder --- */
img[loading="lazy"]{opacity:0;transition:opacity .5s}
img.loaded,img[loading="lazy"]{opacity:1}

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