/* ============================================
   91 影视传媒视频社区 - 原创设计系统
   配色：深紫黑 #1A0A2E / 活力橙 #FF6B35 / 电光紫 #7B2FF7
   ============================================ */

/* CSS Reset & Base */
*,*::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;background:#0F0620;color:#F5F0FF;line-height:1.8;overflow-x:hidden}
a{color:#FF6B35;text-decoration:none;transition:color .3s}
a:hover{color:#7B2FF7}
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:#F5F0FF}

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

/* ============ Header & Navigation ============ */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(15,6,32,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(123,47,247,.2);transition:all .3s}
.site-header.scrolled{background:rgba(15,6,32,.98);box-shadow:0 4px 30px rgba(123,47,247,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;max-width:1400px;margin:0 auto;padding:0 20px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-text{font-size:1.6rem;font-weight:800;background:linear-gradient(135deg,#7B2FF7,#FF6B35);-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;font-size:.9rem;color:#B8A9D4;border-radius:8px;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#FF6B35;background:rgba(255,107,53,.08)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#F5F0FF;border-radius:2px;transition:all .3s}

/* Search Bar */
.search-bar{width:100%;background:rgba(26,10,46,.6);border-bottom:1px solid rgba(123,47,247,.15);padding:10px 0}
.search-bar-inner{max-width:1400px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:10px}
.search-input-wrap{flex:1;position:relative;max-width:600px;margin:0 auto}
.search-input-wrap input{width:100%;padding:10px 45px 10px 18px;background:rgba(34,18,69,.8);border:1px solid rgba(123,47,247,.3);border-radius:25px;color:#F5F0FF;font-size:.9rem;outline:none;transition:all .3s}
.search-input-wrap input:focus{border-color:#7B2FF7;box-shadow:0 0 15px rgba(123,47,247,.2)}
.search-input-wrap input::placeholder{color:#6B5A8E}
.search-btn{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:linear-gradient(135deg,#7B2FF7,#FF6B35);border:none;color:#fff;width:34px;height:34px;border-radius:50%;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:transform .3s}
.search-btn:hover{transform:translateY(-50%) scale(1.1)}
.search-hot{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:6px}
.search-hot a{font-size:.75rem;color:#B8A9D4;padding:3px 10px;background:rgba(123,47,247,.1);border-radius:12px;transition:all .3s}
.search-hot a:hover{background:rgba(255,107,53,.15);color:#FF6B35}

/* ============ Hero Banner ============ */
.hero-banner{position:relative;min-height:75vh;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:70px}
.hero-banner .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.hero-banner .hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,6,32,.3) 0%,rgba(15,6,32,.85) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;max-width:800px;padding:40px 20px}
.hero-content h1{font-size:3rem;margin-bottom:16px;background:linear-gradient(135deg,#F5F0FF,#FF6B35);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content .hero-sub{font-size:1.15rem;color:#B8A9D4;margin-bottom:28px;line-height:1.9}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:28px}
.hero-content .hero-tags span{padding:6px 16px;background:rgba(123,47,247,.15);border:1px solid rgba(123,47,247,.3);border-radius:20px;font-size:.85rem;color:#D4C4F0}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;background:linear-gradient(135deg,#7B2FF7,#5A1FBF);color:#fff;border-radius:30px;font-size:1rem;font-weight:600;border:none;cursor:pointer;transition:all .3s;box-shadow:0 4px 20px rgba(123,47,247,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(123,47,247,.5);color:#fff}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;background:transparent;color:#FF6B35;border:2px solid #FF6B35;border-radius:30px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s}
.btn-secondary:hover{background:rgba(255,107,53,.1);transform:translateY(-2px);color:#FF6B35}

/* ============ Section Common ============ */
.section{padding:70px 0}
.section-dark{background:#0F0620}
.section-alt{background:linear-gradient(180deg,#130930 0%,#0F0620 100%)}
.section-header{text-align:center;margin-bottom:50px}
.section-header h2{font-size:2rem;margin-bottom:12px;position:relative;display:inline-block}
.section-header h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,#7B2FF7,#FF6B35);border-radius:2px}
.section-header p{color:#B8A9D4;font-size:1rem;margin-top:18px;max-width:650px;margin-left:auto;margin-right:auto}
.section-tag{display:inline-block;padding:4px 14px;background:rgba(123,47,247,.12);border:1px solid rgba(123,47,247,.25);border-radius:15px;font-size:.8rem;color:#A78BFA;margin-bottom:12px}

/* ============ Video Cards ============ */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{position:relative;border-radius:14px;overflow:hidden;background:#1A0A2E;border:1px solid rgba(123,47,247,.15);transition:all .4s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(123,47,247,.2);border-color:rgba(255,107,53,.3)}
.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;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:60px;height:60px;background:rgba(255,107,53,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .4s;opacity:0}
.video-play-btn::after{content:'';width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card:hover .video-play-btn{transform:translate(-50%,-50%) scale(1);opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:16px}
.video-info h3{font-size:1rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}
.video-meta{display:flex;align-items:center;gap:14px;color:#8B7AAF;font-size:.8rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:2px 8px;background:rgba(123,47,247,.12);border-radius:4px;font-size:.72rem;color:#A78BFA;margin-right:6px}
.video-player{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.video-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.video-desc{font-size:.82rem;color:#8B7AAF;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.6}

/* ============ Star Cards ============ */
.star-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.star-card{position:relative;border-radius:14px;overflow:hidden;background:#1A0A2E;border:1px solid rgba(123,47,247,.15);transition:all .4s}
.star-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(123,47,247,.2)}
.star-card img{width:100%;aspect-ratio:3/4;object-fit:cover;transition:transform .5s}
.star-card:hover img{transform:scale(1.05)}
.star-card-info{position:absolute;bottom:0;left:0;right:0;padding:20px 16px;background:linear-gradient(transparent,rgba(15,6,32,.95))}
.star-card-info h3{font-size:1.05rem;margin-bottom:4px}
.star-card-info p{font-size:.8rem;color:#B8A9D4}

/* ============ Expert Cards ============ */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:rgba(26,10,46,.6);border:1px solid rgba(123,47,247,.15);border-radius:14px;padding:28px 20px;text-align:center;transition:all .4s}
.expert-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(123,47,247,.2);border-color:rgba(255,107,53,.3)}
.expert-card img{width:100px;height:100px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid rgba(123,47,247,.3)}
.expert-card h3{font-size:1.05rem;margin-bottom:4px}
.expert-card .expert-title{color:#FF6B35;font-size:.85rem;margin-bottom:10px}
.expert-card p{font-size:.82rem;color:#B8A9D4;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.expert-card .expert-btns{display:flex;gap:8px;justify-content:center}
.expert-card .expert-btns a{padding:6px 14px;border-radius:20px;font-size:.78rem;border:1px solid rgba(123,47,247,.3);color:#D4C4F0;transition:all .3s}
.expert-card .expert-btns a:hover{background:rgba(123,47,247,.15);color:#FF6B35}

/* ============ FAQ Section ============ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:rgba(26,10,46,.5);border:1px solid rgba(123,47,247,.15);border-radius:12px;margin-bottom:14px;overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:rgba(255,107,53,.3)}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem;transition:all .3s}
.faq-question:hover{color:#FF6B35}
.faq-question::after{content:'+';font-size:1.4rem;color:#7B2FF7;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg);color:#FF6B35}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-answer-inner{padding:0 0 18px;color:#B8A9D4;font-size:.9rem;line-height:1.8}
.faq-item.active .faq-answer{max-height:300px}

/* ============ Reviews ============ */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:rgba(26,10,46,.5);border:1px solid rgba(123,47,247,.15);border-radius:14px;padding:24px;transition:all .3s}
.review-card:hover{border-color:rgba(255,107,53,.3)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#7B2FF7,#FF6B35);display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;color:#fff;flex-shrink:0}
.review-user h4{font-size:.95rem;margin-bottom:2px}
.review-user span{font-size:.78rem;color:#8B7AAF}
.review-stars{color:#FF6B35;font-size:.85rem;margin-bottom:10px;letter-spacing:2px}
.review-text{font-size:.88rem;color:#B8A9D4;line-height:1.8}

/* ============ Brand Wall ============ */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.brand-wall-item{width:140px;height:70px;background:rgba(26,10,46,.5);border:1px solid rgba(123,47,247,.15);border-radius:10px;display:flex;align-items:center;justify-content:center;padding:10px;transition:all .3s;color:#B8A9D4;font-size:.85rem;font-weight:600}
.brand-wall-item:hover{border-color:#FF6B35;background:rgba(255,107,53,.05)}

/* ============ Contact Section ============ */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:rgba(26,10,46,.5);border:1px solid rgba(123,47,247,.15);border-radius:14px;padding:28px;text-align:center;transition:all .3s}
.contact-card:hover{border-color:rgba(255,107,53,.3);transform:translateY(-4px)}
.contact-card .contact-icon{font-size:2.2rem;margin-bottom:14px}
.contact-card h3{font-size:1.05rem;margin-bottom:8px}
.contact-card p{font-size:.85rem;color:#B8A9D4}

/* ============ Social Share ============ */
.share-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:25px;font-size:.82rem;color:#fff;transition:all .3s;cursor:pointer;border:none}
.share-btn:hover{transform:translateY(-2px);color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* ============ Footer ============ */
.site-footer{background:#080318;border-top:1px solid rgba(123,47,247,.15);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo-wrap{margin-bottom:16px}
.footer-brand p{font-size:.85rem;color:#8B7AAF;line-height:1.8}
.footer-col h4{font-size:1rem;margin-bottom:16px;color:#F5F0FF;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:linear-gradient(90deg,#7B2FF7,#FF6B35);border-radius:2px}
.footer-col a{display:block;padding:4px 0;font-size:.85rem;color:#8B7AAF;transition:color .3s}
.footer-col a:hover{color:#FF6B35}
.footer-qr{display:flex;gap:20px;margin-top:16px}
.footer-qr-item{text-align:center}
.footer-qr-item img{width:100px;height:100px;border-radius:8px;border:1px solid rgba(123,47,247,.2)}
.footer-qr-item span{display:block;font-size:.72rem;color:#8B7AAF;margin-top:6px}
.footer-bottom{border-top:1px solid rgba(123,47,247,.1);padding:20px 0;text-align:center;font-size:.8rem;color:#6B5A8E}
.footer-bottom a{color:#8B7AAF}

/* ============ Breadcrumb ============ */
.breadcrumb{padding:14px 0;font-size:.82rem;color:#8B7AAF}
.breadcrumb a{color:#B8A9D4}
.breadcrumb a:hover{color:#FF6B35}
.breadcrumb span{margin:0 8px;color:#6B5A8E}

/* ============ Inner Page Hero ============ */
.inner-hero{padding:120px 0 50px;text-align:center;background:linear-gradient(180deg,#1A0A2E,#0F0620)}
.inner-hero h1{font-size:2.2rem;margin-bottom:10px}
.inner-hero p{color:#B8A9D4;font-size:1rem}

/* ============ Content Cards ============ */
.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.content-card{background:rgba(26,10,46,.5);border:1px solid rgba(123,47,247,.15);border-radius:14px;overflow:hidden;transition:all .4s}
.content-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(123,47,247,.2);border-color:rgba(255,107,53,.3)}
.content-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.content-card-body{padding:20px}
.content-card-body h3{font-size:1rem;margin-bottom:8px}
.content-card-body p{font-size:.85rem;color:#B8A9D4;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ============ Feature List ============ */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-item{background:rgba(26,10,46,.5);border:1px solid rgba(123,47,247,.15);border-radius:14px;padding:30px 24px;text-align:center;transition:all .4s}
.feature-item:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(123,47,247,.2);border-color:rgba(255,107,53,.3)}
.feature-icon{font-size:2.5rem;margin-bottom:16px}
.feature-item h3{font-size:1.05rem;margin-bottom:10px}
.feature-item p{font-size:.85rem;color:#B8A9D4}

/* ============ How-To Guide ============ */
.howto-steps{max-width:700px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:30px;align-items:flex-start}
.howto-num{width:48px;height:48px;flex-shrink:0;background:linear-gradient(135deg,#7B2FF7,#FF6B35);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;color:#fff}
.howto-text h3{font-size:1rem;margin-bottom:6px}
.howto-text p{font-size:.88rem;color:#B8A9D4}

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

/* ============ Animations ============ */
.fade-in{opacity:0;transform:translateY(30px);transition:all .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ============ MCP Frontend Placeholder ============ */
.mcp-widget{background:rgba(26,10,46,.4);border:1px solid rgba(123,47,247,.15);border-radius:12px;padding:20px;margin:20px 0;text-align:center}
.mcp-widget p{color:#8B7AAF;font-size:.82rem}

/* ============ Responsive ============ */
@media(max-width:1024px){
  .video-grid,.content-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}
  .star-grid,.expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:70px;left:0;right:0;background:rgba(15,6,32,.98);flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .3s;border-bottom:1px solid rgba(123,47,247,.2)}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:12px 16px;width:100%}
  .hero-content h1{font-size:2rem}
  .hero-banner{min-height:60vh}
  .video-grid,.content-grid,.feature-grid{grid-template-columns:1fr}
  .star-grid,.expert-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .section{padding:50px 0}
  .section-header h2{font-size:1.6rem}
  .header-inner{height:60px}
  .hero-banner{margin-top:60px}
}
@media(max-width:480px){
  .star-grid,.expert-grid{grid-template-columns:1fr}
  .hero-content h1{font-size:1.6rem}
  .hero-content .hero-sub{font-size:.95rem}
}