/* ============================================
   91 - 影视传媒动漫社区 原创CSS
   配色：深青#0D4F4F 琥珀金#D4A017 暗夜#0A0A1A
   ============================================ */
*{margin:0;padding:0;box-sizing:border-box}
:root{--c-primary:#0D4F4F;--c-gold:#D4A017;--c-dark:#0A0A1A;--c-bg:#0E1117;--c-card:#141B24;--c-text:#C8D6E5;--c-light:#E8ECF1;--c-accent:#1A8A8A;--c-border:#1E2A36;--c-hover:#D4A017;--c-gradient:linear-gradient(135deg,#0D4F4F,#1A8A8A);--c-gold-gradient:linear-gradient(135deg,#D4A017,#F0C75E);--shadow:0 4px 20px rgba(0,0,0,0.4);--radius:12px}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;background:var(--c-bg);color:var(--c-text);line-height:1.8;overflow-x:hidden}
a{color:var(--c-gold);text-decoration:none;transition:all .3s}
a:hover{color:#F0C75E;text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
/* 干扰标签隐藏 */
.jrb{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}
/* ===== 顶部导航 ===== */
.top-bar{background:var(--c-dark);border-bottom:1px solid var(--c-border);padding:6px 0;font-size:13px;color:#8899AA}
.top-bar .container{display:flex;justify-content:space-between;align-items:center}
.top-bar a{color:#8899AA;margin:0 8px}
.top-bar a:hover{color:var(--c-gold)}
.site-header{background:linear-gradient(180deg,#0A0F14 0%,#0E1117 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 16px rgba(0,0,0,0.5)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo-wrap{display:flex;align-items:center;gap:12px}
.logo-wrap img{height:48px;width:auto}
.logo-wrap h1{font-size:22px;color:var(--c-gold);font-weight:700;letter-spacing:1px}
.logo-wrap h1 span{color:var(--c-accent)}
.main-nav{display:flex;gap:4px}
.main-nav a{padding:10px 16px;color:var(--c-light);font-size:15px;font-weight:500;border-radius:8px;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:var(--c-primary);color:var(--c-gold);text-decoration:none}
.mobile-toggle{display:none;font-size:24px;color:var(--c-gold);cursor:pointer;background:none;border:none}
/* ===== 搜索框 ===== */
.search-bar{background:var(--c-dark);padding:14px 0;border-bottom:1px solid var(--c-border)}
.search-wrap{display:flex;max-width:680px;margin:0 auto;gap:0}
.search-wrap input{flex:1;padding:12px 20px;background:#141B24;border:2px solid var(--c-border);border-right:none;border-radius:8px 0 0 8px;color:var(--c-light);font-size:15px;outline:none;transition:border-color .3s}
.search-wrap input:focus{border-color:var(--c-gold)}
.search-wrap button{padding:12px 28px;background:var(--c-gold-gradient);border:none;border-radius:0 8px 8px 0;color:var(--c-dark);font-weight:700;font-size:15px;cursor:pointer;transition:opacity .3s}
.search-wrap button:hover{opacity:.85}
/* ===== Hero Banner ===== */
.hero{position:relative;overflow:hidden;min-height:520px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,26,.3) 0%,rgba(10,10,26,.85) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;padding:60px 20px;width:100%}
.hero-content h2{font-size:42px;color:#fff;font-weight:800;margin-bottom:16px;text-shadow:0 2px 20px rgba(13,79,79,.6)}
.hero-content h2 em{font-style:normal;color:var(--c-gold)}
.hero-content p{font-size:18px;color:#B0C4D8;max-width:700px;margin:0 auto 30px;line-height:1.8}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{display:inline-block;padding:14px 36px;background:var(--c-gold-gradient);color:var(--c-dark);font-weight:700;border-radius:30px;font-size:16px;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(212,160,23,.4);text-decoration:none;color:var(--c-dark)}
.btn-outline{display:inline-block;padding:14px 36px;border:2px solid var(--c-gold);color:var(--c-gold);font-weight:700;border-radius:30px;font-size:16px;transition:all .3s;background:transparent;cursor:pointer}
.btn-outline:hover{background:var(--c-gold);color:var(--c-dark);text-decoration:none}
/* ===== 通用Section ===== */
.section{padding:60px 0}
.section-dark{background:var(--c-dark)}
.section-alt{background:#0C1018}
.section-header{text-align:center;margin-bottom:45px}
.section-header h2{font-size:32px;color:#fff;font-weight:700;margin-bottom:10px}
.section-header h2 em{font-style:normal;color:var(--c-gold)}
.section-header h3{font-size:22px;color:var(--c-gold);font-weight:600;margin-bottom:8px}
.section-header p{color:#8899AA;font-size:16px;max-width:600px;margin:0 auto}
.section-header .divider{width:60px;height:3px;background:var(--c-gold-gradient);margin:14px auto 0;border-radius:2px}
/* ===== 视频卡片网格 ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.video-card{background:var(--c-card);border-radius:var(--radius);overflow:hidden;transition:all .35s;border:1px solid var(--c-border);cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(13,79,79,.3);border-color:var(--c-primary)}
.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)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:64px;height:64px;background:rgba(212,160,23,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .35s;z-index:3}
.play-btn::after{content:"";width:0;height:0;border-left:22px solid var(--c-dark);border-top:14px solid transparent;border-bottom:14px solid transparent;margin-left:4px}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(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:12px;z-index:3}
.video-stats{position:absolute;bottom:8px;left:8px;display:flex;gap:10px;z-index:3}
.video-stats span{background:rgba(0,0,0,.7);color:#ccc;padding:2px 8px;border-radius:4px;font-size:11px}
.video-info{padding:16px}
.video-info h4{font-size:16px;color:var(--c-light);font-weight:600;margin-bottom:6px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info .meta{display:flex;justify-content:space-between;color:#6B7C8D;font-size:13px}
.video-tag{display:inline-block;background:var(--c-primary);color:var(--c-gold);padding:2px 10px;border-radius:20px;font-size:12px;margin-top:8px}
/* ===== 分类标签导航 ===== */
.tag-nav{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:30px}
.tag-nav a{padding:8px 20px;background:var(--c-card);color:var(--c-text);border-radius:25px;font-size:14px;border:1px solid var(--c-border);transition:all .3s}
.tag-nav a:hover,.tag-nav a.active{background:var(--c-primary);color:var(--c-gold);border-color:var(--c-primary);text-decoration:none}
/* ===== 专家团队 ===== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:var(--c-card);border-radius:var(--radius);padding:30px 20px;text-align:center;border:1px solid var(--c-border);transition:all .35s}
.expert-card:hover{border-color:var(--c-gold);transform:translateY(-4px);box-shadow:var(--shadow)}
.expert-card img{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;border:3px solid var(--c-primary);object-fit:cover}
.expert-card h4{color:#fff;font-size:18px;margin-bottom:4px}
.expert-card .role{color:var(--c-gold);font-size:14px;margin-bottom:10px}
.expert-card p{font-size:13px;color:#8899AA;line-height:1.7;margin-bottom:14px}
.expert-card .btn-sm{display:inline-block;padding:8px 20px;background:var(--c-primary);color:var(--c-gold);border-radius:20px;font-size:13px;transition:all .3s}
.expert-card .btn-sm:hover{background:var(--c-gold);color:var(--c-dark);text-decoration:none}
/* ===== AI赋能 ===== */
.ai-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.ai-card{background:var(--c-card);border-radius:var(--radius);padding:30px;border:1px solid var(--c-border);transition:all .35s}
.ai-card:hover{border-color:var(--c-accent);box-shadow:0 0 30px rgba(26,138,138,.15)}
.ai-card .icon{width:56px;height:56px;background:var(--c-gradient);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px}
.ai-card h4{color:#fff;font-size:18px;margin-bottom:10px}
.ai-card p{color:#8899AA;font-size:14px;line-height:1.7}
/* ===== 社区功能 ===== */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:18px}
.community-item{background:var(--c-card);border-radius:var(--radius);padding:24px 16px;text-align:center;border:1px solid var(--c-border);transition:all .3s}
.community-item:hover{border-color:var(--c-gold);transform:translateY(-3px)}
.community-item .icon{font-size:36px;margin-bottom:10px}
.community-item h5{color:var(--c-light);font-size:15px;margin-bottom:6px}
.community-item p{color:#6B7C8D;font-size:13px}
/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--c-card);border-radius:var(--radius);margin-bottom:12px;border:1px solid var(--c-border);overflow:hidden}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--c-light);font-weight:600;font-size:16px;transition:background .3s}
.faq-q:hover{background:rgba(13,79,79,.2)}
.faq-q::after{content:"+";font-size:22px;color:var(--c-gold);transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.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:#8899AA;font-size:14px;line-height:1.8}
/* ===== 用户评价 ===== */
.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;border:1px solid var(--c-border)}
.review-card .stars{color:var(--c-gold);font-size:16px;margin-bottom:10px}
.review-card p{color:var(--c-text);font-size:14px;line-height:1.8;margin-bottom:12px;font-style:italic}
.review-card .author{display:flex;align-items:center;gap:10px;color:#6B7C8D;font-size:13px}
.review-card .author strong{color:var(--c-light)}
/* ===== 合作品牌 ===== */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.brand-wall .brand-item{background:var(--c-card);border:1px solid var(--c-border);border-radius:10px;padding:16px 28px;color:var(--c-text);font-size:15px;font-weight:600;transition:all .3s}
.brand-wall .brand-item:hover{border-color:var(--c-gold);color:var(--c-gold)}
/* ===== How-To指南 ===== */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;counter-reset:step}
.howto-step{background:var(--c-card);border-radius:var(--radius);padding:30px 20px;text-align:center;border:1px solid var(--c-border);counter-increment:step;position:relative}
.howto-step::before{content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:32px;height:32px;background:var(--c-gold-gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--c-dark);font-weight:800;font-size:16px;line-height:32px}
.howto-step h5{color:#fff;font-size:16px;margin:10px 0 8px}
.howto-step p{color:#8899AA;font-size:13px;line-height:1.7}
/* ===== 联系我们 ===== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:30px}
.contact-info{background:var(--c-card);border-radius:var(--radius);padding:30px;border:1px solid var(--c-border)}
.contact-info h4{color:#fff;font-size:18px;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--c-border)}
.contact-info li{list-style:none;padding:8px 0;color:var(--c-text);font-size:14px;display:flex;gap:10px;align-items:flex-start}
.contact-info li strong{color:var(--c-gold);min-width:80px}
.qrcode-wrap{display:flex;gap:30px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.qrcode-item{text-align:center}
.qrcode-item img{width:140px;height:140px;border-radius:10px;border:2px solid var(--c-border);margin-bottom:8px}
.qrcode-item p{color:#8899AA;font-size:13px}
/* ===== 社交分享 ===== */
.share-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-btns a{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;background:var(--c-card);border:1px solid var(--c-border);border-radius:25px;color:var(--c-text);font-size:14px;transition:all .3s}
.share-btns a:hover{border-color:var(--c-gold);color:var(--c-gold);text-decoration:none}
/* ===== 页脚 ===== */
.site-footer{background:var(--c-dark);border-top:1px solid var(--c-border);padding:40px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:var(--c-gold);font-size:16px;margin-bottom:14px;font-weight:600}
.footer-col p{color:#6B7C8D;font-size:13px;line-height:1.8}
.footer-col a{display:block;color:#8899AA;font-size:13px;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:var(--c-gold);text-decoration:none}
.footer-bottom{border-top:1px solid var(--c-border);padding:18px 0;text-align:center;color:#6B7C8D;font-size:13px}
.footer-bottom a{color:var(--c-gold)}
/* ===== 面包屑 ===== */
.breadcrumb{padding:14px 0;font-size:13px;color:#6B7C8D}
.breadcrumb a{color:var(--c-accent)}
.breadcrumb span{margin:0 6px;color:#4A5568}
/* ===== 视频模态框 ===== */
.video-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:9999;align-items:center;justify-content:center}
.video-modal.active{display:flex}
.video-modal-inner{width:90%;max-width:900px;background:var(--c-dark);border-radius:var(--radius);overflow:hidden;position:relative}
.video-modal-close{position:absolute;top:12px;right:16px;color:#fff;font-size:28px;cursor:pointer;z-index:10;background:rgba(0,0,0,.5);width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:none}
.video-modal-body{padding-top:56.25%;position:relative;background:#000}
.video-modal-body p{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#666;font-size:16px}
/* ===== 回到顶部 ===== */
.back-top{position:fixed;bottom:30px;right:30px;width:48px;height:48px;background:var(--c-gold-gradient);border-radius:50%;display:none;align-items:center;justify-content:center;cursor:pointer;z-index:999;border:none;box-shadow:0 4px 16px rgba(212,160,23,.4);transition:all .3s}
.back-top:hover{transform:translateY(-3px)}
.back-top::after{content:"";width:12px;height:12px;border-left:3px solid var(--c-dark);border-top:3px solid var(--c-dark);transform:rotate(45deg);margin-top:4px}
.back-top.show{display:flex}
/* ===== 内页通用 ===== */
.page-hero{padding:50px 0;background:linear-gradient(135deg,var(--c-dark),#0E1117);text-align:center}
.page-hero h2{font-size:36px;color:#fff;margin-bottom:10px}
.page-hero p{color:#8899AA;font-size:16px}
.page-content{padding:50px 0}
/* ===== 响应式 ===== */
@media(max-width:768px){
.header-inner{flex-wrap:wrap}
.main-nav{display:none;width:100%;flex-direction:column;gap:2px;padding-top:10px}
.main-nav.open{display:flex}
.mobile-toggle{display:block}
.hero-content h2{font-size:28px}
.hero-content p{font-size:15px}
.video-grid{grid-template-columns:1fr}
.section{padding:40px 0}
.section-header h2{font-size:24px}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.search-wrap{margin:0 15px}
}
@media(max-width:480px){
.expert-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.hero{min-height:380px}
.hero-content h2{font-size:24px}
.community-grid{grid-template-columns:repeat(2,1fr)}
}