/* ==============================================
   91视频社区 原创样式表
   配色: 法拉利红 #DC143C / 碳纤维黑 #111111 / 暖金 #D4A843
   背景: 深夜黑 #0A0A0F / 暗灰蓝 #141420
   ============================================= */

/* === 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","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:#0A0A0F;color:#E0E0EC;line-height:1.75;overflow-x:hidden}
a{color:#DC143C;text-decoration:none;transition:color .25s}
a:hover{color:#D4A843}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,h5,h6{line-height:1.35;font-weight:700}
h2 em{font-style:normal;color:#DC143C}

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

/* === 头部导航 === */
.rc-topbar{position:fixed;top:0;left:0;width:100%;z-index:999;background:rgba(10,10,15,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,20,60,.15);transition:background .3s}
.rc-topbar-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:66px}
.rc-logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:#DC143C;letter-spacing:1px}
.rc-logo:hover{color:#DC143C}
.rc-logo-img{width:44px;height:44px;border-radius:10px;object-fit:contain}
.rc-nav{display:flex;gap:4px}
.rc-nav a{padding:9px 15px;border-radius:8px;font-size:14.5px;color:#8A8AA8;transition:all .25s;font-weight:500}
.rc-nav a:hover,.rc-nav a.on{color:#DC143C;background:rgba(220,20,60,.08)}
.rc-finder{display:flex;align-items:center;background:#141420;border:1px solid #252540;border-radius:24px;overflow:hidden;transition:border-color .25s}
.rc-finder:focus-within{border-color:#DC143C}
.rc-finder input{background:transparent;border:none;outline:none;color:#E0E0EC;padding:8px 14px;font-size:13.5px;width:170px}
.rc-finder input::placeholder{color:#5A5A80}
.rc-finder button{background:transparent;border:none;color:#DC143C;padding:8px 12px;cursor:pointer;font-size:16px}
.rc-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer}
.rc-hamburger span{display:block;width:24px;height:2.5px;background:#E0E0EC;border-radius:2px;transition:all .3s}

/* === Hero === */
.rc-hero{position:relative;min-height:90vh;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:66px}
.rc-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.rc-hero-mask{position:absolute;inset:0;background:linear-gradient(160deg,rgba(10,10,15,.9) 0%,rgba(20,20,32,.7) 45%,rgba(220,20,60,.12) 100%)}
.rc-hero-body{position:relative;z-index:2;text-align:center;max-width:850px;padding:40px 20px}
.rc-hero h1{font-size:clamp(26px,5vw,50px);margin-bottom:18px;letter-spacing:2px;text-shadow:0 2px 24px rgba(220,20,60,.35)}
.rc-hero-desc{font-size:clamp(14px,2vw,17px);color:#A8A8C0;margin-bottom:34px;line-height:1.8}
.rc-hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:44px}
.rc-btn-hot{display:inline-block;padding:14px 38px;background:linear-gradient(135deg,#DC143C,#9B0E2A);color:#fff;border-radius:30px;font-weight:600;font-size:15px;transition:all .3s;box-shadow:0 4px 22px rgba(220,20,60,.4)}
.rc-btn-hot:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(220,20,60,.55);color:#fff}
.rc-btn-line{display:inline-block;padding:14px 38px;border:2px solid rgba(220,20,60,.5);color:#DC143C;border-radius:30px;font-weight:600;font-size:15px;transition:all .3s}
.rc-btn-line:hover{background:rgba(220,20,60,.1);border-color:#DC143C;color:#DC143C}
.rc-hero-nums{display:flex;gap:44px;justify-content:center;flex-wrap:wrap}
.rc-num-box{text-align:center}
.rc-num-val{font-size:clamp(28px,4vw,42px);font-weight:800;color:#DC143C}
.rc-num-txt{font-size:13px;color:#7A7A98;margin-top:4px}

/* === 通用区块 === */
.rc-block{padding:80px 0}
.rc-block-alt{background:#0E0E18}
.rc-block h2{font-size:clamp(22px,3.5vw,34px);text-align:center;margin-bottom:14px}
.rc-block-sub{text-align:center;color:#8A8AA8;margin-bottom:48px;font-size:15px;max-width:680px;margin-left:auto;margin-right:auto}

/* === 视频卡片网格 === */
.rc-vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.rc-vcard{background:#141420;border-radius:14px;overflow:hidden;transition:transform .3s,box-shadow .3s;cursor:pointer;position:relative}
.rc-vcard:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(220,20,60,.2)}
.rc-vthumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.rc-vthumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.rc-vcard:hover .rc-vthumb img{transform:scale(1.06)}
.rc-vplay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(10,10,15,.5);opacity:0;transition:opacity .3s}
.rc-vcard:hover .rc-vplay{opacity:1}
.rc-vplay-icon{width:56px;height:56px;background:rgba(220,20,60,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;box-shadow:0 4px 20px rgba(220,20,60,.5)}
.rc-vtime{position:absolute;bottom:8px;right:8px;background:rgba(10,10,15,.85);color:#E0E0EC;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:600}
.rc-vinfo{padding:16px}
.rc-vinfo h3{font-size:15px;margin-bottom:8px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rc-vmeta{display:flex;gap:14px;font-size:12.5px;color:#7A7A98}
.rc-vtags{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.rc-vtag{font-size:11px;padding:3px 9px;border-radius:12px;background:rgba(220,20,60,.1);color:#DC143C}

/* === 筛选标签 === */
.rc-filters{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.rc-ftag{padding:8px 20px;border-radius:20px;font-size:13.5px;color:#8A8AA8;background:#141420;border:1px solid #252540;cursor:pointer;transition:all .25s}
.rc-ftag:hover,.rc-ftag.on{color:#fff;background:#DC143C;border-color:#DC143C}

/* === 媒体传媒 === */
.rc-media-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:22px}
.rc-media-item{background:#141420;border-radius:14px;padding:28px 24px;transition:transform .3s,box-shadow .3s;border:1px solid #1E1E35}
.rc-media-item:hover{transform:translateY(-4px);box-shadow:0 8px 28px rgba(220,20,60,.15);border-color:rgba(220,20,60,.3)}
.rc-media-ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,#DC143C,#9B0E2A);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;color:#fff}
.rc-media-item h3{font-size:17px;margin-bottom:8px}
.rc-media-item p{font-size:13.5px;color:#8A8AA8;line-height:1.65}

/* === 娱乐专区 === */
.rc-fun-box{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.rc-fun-img{border-radius:16px;overflow:hidden}
.rc-fun-img img{width:100%;border-radius:16px}
.rc-fun-list{display:flex;flex-direction:column;gap:18px}
.rc-fun-entry{display:flex;gap:16px;align-items:flex-start;background:#141420;padding:20px;border-radius:12px;border:1px solid #1E1E35;transition:border-color .25s}
.rc-fun-entry:hover{border-color:rgba(220,20,60,.3)}
.rc-fun-badge{min-width:42px;height:42px;border-radius:10px;background:rgba(212,168,67,.15);display:flex;align-items:center;justify-content:center;font-size:18px;color:#D4A843}
.rc-fun-entry h4{font-size:15px;margin-bottom:4px}
.rc-fun-entry p{font-size:13px;color:#8A8AA8}

/* === AI赋能 === */
.rc-ai-box{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}
.rc-ai-img{border-radius:16px;overflow:hidden}
.rc-ai-img img{border-radius:16px}
.rc-ai-list{display:flex;flex-direction:column;gap:16px}
.rc-ai-card{background:#141420;padding:22px;border-radius:12px;border-left:3px solid #DC143C;transition:transform .25s}
.rc-ai-card:hover{transform:translateX(6px)}
.rc-ai-card h4{font-size:15px;margin-bottom:6px;color:#D4A843}
.rc-ai-card p{font-size:13.5px;color:#8A8AA8}

/* === 社区功能 === */
.rc-comm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px}
.rc-comm-tile{background:#141420;border-radius:14px;padding:28px 18px;text-align:center;transition:transform .3s,box-shadow .3s;border:1px solid #1E1E35}
.rc-comm-tile:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(220,20,60,.15)}
.rc-comm-ico{font-size:32px;margin-bottom:14px}
.rc-comm-tile h4{font-size:15px;margin-bottom:6px}
.rc-comm-tile p{font-size:12.5px;color:#8A8AA8}

/* === 专家展示 === */
.rc-expert-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.rc-expert-box{background:#141420;border-radius:16px;overflow:hidden;transition:transform .3s}
.rc-expert-box:hover{transform:translateY(-4px)}
.rc-expert-box img{width:100%;height:260px;object-fit:cover}
.rc-expert-detail{padding:20px}
.rc-expert-name{font-size:17px;margin-bottom:4px}
.rc-expert-role{font-size:13px;color:#D4A843;margin-bottom:10px}
.rc-expert-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.rc-expert-tag{font-size:11px;padding:3px 9px;border-radius:12px;background:rgba(220,20,60,.1);color:#DC143C}
.rc-expert-acts{display:flex;gap:10px}
.rc-btn-sm{padding:7px 18px;border-radius:18px;font-size:12.5px;font-weight:600;background:linear-gradient(135deg,#DC143C,#9B0E2A);color:#fff;transition:all .25s}
.rc-btn-sm:hover{box-shadow:0 4px 16px rgba(220,20,60,.4);color:#fff}
.rc-btn-sm-line{padding:7px 18px;border-radius:18px;font-size:12.5px;font-weight:600;border:1px solid rgba(220,20,60,.4);color:#DC143C;transition:all .25s}
.rc-btn-sm-line:hover{background:rgba(220,20,60,.08)}

/* === 品牌墙 === */
.rc-brand-wall{display:flex;gap:28px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.rc-brand-chip{background:#141420;border:1px solid #252540;border-radius:12px;padding:18px 32px;font-size:15px;font-weight:600;color:#8A8AA8;transition:all .25s}
.rc-brand-chip:hover{border-color:#DC143C;color:#DC143C}

/* === How-To步骤 === */
.rc-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.rc-step{background:#141420;border-radius:14px;padding:28px 24px;text-align:center;border:1px solid #1E1E35;transition:border-color .25s}
.rc-step:hover{border-color:rgba(220,20,60,.3)}
.rc-step-no{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#DC143C,#9B0E2A);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:#fff;margin:0 auto 16px}
.rc-step h4{font-size:16px;margin-bottom:8px}
.rc-step p{font-size:13.5px;color:#8A8AA8}

/* === FAQ === */
.rc-faq-list{max-width:800px;margin:0 auto}
.rc-faq-item{background:#141420;border-radius:12px;margin-bottom:12px;overflow:hidden;border:1px solid #1E1E35}
.rc-faq-q{padding:18px 24px;cursor:pointer;font-weight:600;font-size:15px;display:flex;justify-content:space-between;align-items:center;transition:color .25s}
.rc-faq-q:hover{color:#DC143C}
.rc-faq-q::after{content:"+";font-size:20px;color:#DC143C;transition:transform .3s}
.rc-faq-item.open .rc-faq-q::after{transform:rotate(45deg)}
.rc-faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;padding:0 24px;font-size:14px;color:#8A8AA8;line-height:1.7}
.rc-faq-item.open .rc-faq-a{max-height:300px;padding:0 24px 18px}

/* === 评论 === */
.rc-review-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.rc-review-box{background:#141420;border-radius:14px;padding:24px;border:1px solid #1E1E35}
.rc-review-stars{color:#D4A843;font-size:16px;margin-bottom:12px;letter-spacing:2px}
.rc-review-txt{font-size:14px;color:#B0B0C8;line-height:1.7;margin-bottom:16px;font-style:italic}
.rc-reviewer{display:flex;align-items:center;gap:12px}
.rc-reviewer-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,#DC143C,#D4A843);display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff;font-weight:700}
.rc-reviewer-name{font-size:14px;font-weight:600}
.rc-reviewer-date{font-size:12px;color:#6A6A88}

/* === 联系我们 === */
.rc-contact-row{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.rc-contact-info h3{font-size:20px;margin-bottom:16px;color:#D4A843}
.rc-contact-info p{font-size:14px;color:#8A8AA8;margin-bottom:10px;line-height:1.65}
.rc-contact-info strong{color:#E0E0EC}
.rc-contact-side h4{font-size:17px;margin-bottom:14px}
.rc-qr-row{display:flex;gap:20px;margin-bottom:20px}
.rc-qr-box{text-align:center}
.rc-qr-placeholder{width:120px;height:120px;background:#1E1E35;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:12px;color:#6A6A88;margin-bottom:8px}
.rc-social-row{display:flex;gap:10px;flex-wrap:wrap}
.rc-social-btn{padding:8px 18px;border-radius:18px;font-size:13px;background:#1E1E35;color:#8A8AA8;transition:all .25s;cursor:pointer}
.rc-social-btn:hover{background:#DC143C;color:#fff}

/* === 页脚 === */
.rc-footer{background:#080810;padding:48px 0 0;border-top:1px solid #1A1A30}
.rc-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.rc-footer-col h4{font-size:15px;margin-bottom:16px;color:#D4A843}
.rc-footer-col a{display:block;font-size:13.5px;color:#7A7A98;margin-bottom:8px;transition:color .2s}
.rc-footer-col a:hover{color:#DC143C}
.rc-footer-col p{font-size:13px;color:#6A6A88;line-height:1.65}
.rc-footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.rc-footer-brand img{width:36px;height:36px;border-radius:8px}
.rc-footer-brand span{font-size:18px;font-weight:700;color:#DC143C}
.rc-footer-bottom{text-align:center;padding:20px 0;border-top:1px solid #1A1A30;font-size:13px;color:#5A5A78}
.rc-footer-bottom a{color:#7A7A98}

/* === 面包屑 === */
.rc-crumbs{padding:80px 0 10px;font-size:13px;color:#6A6A88}
.rc-crumbs a{color:#8A8AA8}
.rc-crumbs a:hover{color:#DC143C}

/* === 内页播放器 === */
.rc-player-wrap{max-width:900px;margin:0 auto;padding:30px 0}
.rc-player-box{background:#000;border-radius:14px;overflow:hidden;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;margin-bottom:24px}
.rc-player-box video{width:100%;height:100%}
.rc-play-title{font-size:22px;margin-bottom:12px}
.rc-play-stats{display:flex;gap:20px;font-size:13.5px;color:#8A8AA8;margin-bottom:16px}
.rc-play-body{font-size:14.5px;color:#A0A0B8;line-height:1.75;margin-bottom:28px}
.rc-related h3{font-size:18px;margin-bottom:18px}

/* === MCP组件 === */
.rc-mcp{position:fixed;bottom:80px;right:20px;width:320px;background:#141420;border:1px solid #252540;border-radius:16px;overflow:hidden;z-index:998;display:none;box-shadow:0 8px 32px rgba(0,0,0,.5)}
.rc-mcp-head{background:linear-gradient(135deg,#DC143C,#9B0E2A);padding:14px 18px;font-weight:600;color:#fff;font-size:14px}
.rc-mcp-body{padding:18px;min-height:120px}
.rc-mcp-msg{font-size:13px;color:#8A8AA8;background:#1A1A2E;padding:12px;border-radius:10px}
.rc-mcp-foot{display:flex;padding:12px;gap:8px;border-top:1px solid #252540}
.rc-mcp-foot input{flex:1;background:#1A1A2E;border:1px solid #252540;border-radius:20px;padding:8px 14px;color:#E0E0EC;font-size:13px;outline:none}
.rc-mcp-foot button{background:#DC143C;border:none;color:#fff;padding:8px 16px;border-radius:20px;cursor:pointer;font-size:13px}
.rc-mcp-btn{position:fixed;bottom:20px;right:20px;width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#DC143C,#9B0E2A);display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;cursor:pointer;z-index:998;box-shadow:0 4px 20px rgba(220,20,60,.4);transition:transform .25s}
.rc-mcp-btn:hover{transform:scale(1.08)}

/* === 更多按钮 === */
.rc-more{text-align:center;margin-top:36px}

/* === 响应式 === */
@media(max-width:900px){
  .rc-nav{display:none;position:absolute;top:66px;left:0;width:100%;background:rgba(10,10,15,.98);flex-direction:column;padding:16px;gap:4px;border-bottom:1px solid #252540}
  .rc-nav.open{display:flex}
  .rc-hamburger{display:flex}
  .rc-finder{display:none}
  .rc-fun-box,.rc-ai-box,.rc-contact-row{grid-template-columns:1fr}
  .rc-footer-grid{grid-template-columns:1fr 1fr}
  .rc-hero-nums{gap:24px}
  .rc-expert-row{grid-template-columns:1fr}
}
@media(max-width:600px){
  .rc-footer-grid{grid-template-columns:1fr}
  .rc-vgrid{grid-template-columns:1fr}
  .rc-review-row{grid-template-columns:1fr}
}