/* ============================================
   高清视频 - 原创样式表
   品牌色系：珊瑚粉 #FF6B8A / 深海蓝 #0A0E27 / 暖桃 #FFB4A2
   域名：rlfgx41.cn
   ============================================ */

/* --- 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","Microsoft YaHei","Hiragino Sans GB",sans-serif;color:#e8e0f0;background:#0A0E27;line-height:1.7;overflow-x:hidden}
a{color:#FF6B8A;text-decoration:none;transition:color .3s}
a:hover{color:#FFB4A2}
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}

/* --- 布局容器 --- */
.tx-container{max-width:1280px;margin:0 auto;padding:0 20px}
.tx-section{padding:60px 0}
.tx-section-title{font-size:28px;text-align:center;margin-bottom:12px;position:relative}
.tx-section-title::after{content:"";display:block;width:60px;height:3px;background:linear-gradient(90deg,#FF6B8A,#FFB4A2);margin:12px auto 0;border-radius:2px}
.tx-section-subtitle{text-align:center;color:#a09bb5;font-size:15px;margin-bottom:40px}

/* --- 顶部导航 --- */
.tx-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(10,14,39,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,107,138,.15);transition:background .3s}
.tx-header .tx-container{display:flex;align-items:center;justify-content:space-between;height:68px}
.tx-logo{display:flex;align-items:center;gap:10px}
.tx-logo img{width:42px;height:42px;border-radius:8px}
.tx-logo-text{font-size:20px;font-weight:800;background:linear-gradient(135deg,#FF6B8A,#FFB4A2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.tx-nav{display:flex;align-items:center;gap:6px}
.tx-nav a{padding:8px 14px;border-radius:6px;font-size:14px;color:#c8c2d8;transition:all .3s}
.tx-nav a:hover,.tx-nav a.active{color:#FF6B8A;background:rgba(255,107,138,.1)}
.tx-mobile-toggle{display:none;background:none;border:none;color:#FF6B8A;font-size:24px;cursor:pointer}

/* --- 搜索栏 --- */
.tx-search-bar{background:linear-gradient(135deg,rgba(255,107,138,.08),rgba(10,14,39,.5));padding:16px 0;margin-top:68px;border-bottom:1px solid rgba(255,107,138,.1)}
.tx-search-wrap{display:flex;max-width:640px;margin:0 auto;gap:0}
.tx-search-wrap input{flex:1;padding:12px 20px;border:2px solid rgba(255,107,138,.3);border-right:none;border-radius:25px 0 0 25px;background:rgba(10,14,39,.6);color:#fff;font-size:15px;outline:none;transition:border-color .3s}
.tx-search-wrap input:focus{border-color:#FF6B8A}
.tx-search-wrap input::placeholder{color:#7a7490}
.tx-search-wrap button{padding:12px 28px;background:linear-gradient(135deg,#FF6B8A,#e8527a);color:#fff;border:none;border-radius:0 25px 25px 0;font-size:15px;cursor:pointer;transition:opacity .3s}
.tx-search-wrap button:hover{opacity:.85}

/* --- 横幅区 --- */
.tx-banner{position:relative;height:520px;overflow:hidden}
.tx-banner img{width:100%;height:100%;object-fit:cover}
.tx-banner-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,14,39,.3) 0%,rgba(10,14,39,.85) 100%);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:0 20px}
.tx-banner h1{font-size:42px;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.5)}
.tx-banner h1 em{font-style:normal;color:#FF6B8A}
.tx-banner p{font-size:18px;color:#c8c2d8;max-width:680px;margin-bottom:24px}
.tx-banner-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tx-banner-tags span{padding:6px 16px;background:rgba(255,107,138,.15);border:1px solid rgba(255,107,138,.3);border-radius:20px;font-size:13px;color:#FFB4A2}

/* --- 视频卡片网格 --- */
.tx-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tx-video-card{background:rgba(255,255,255,.04);border-radius:14px;overflow:hidden;border:1px solid rgba(255,107,138,.08);transition:transform .3s,box-shadow .3s}
.tx-video-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(255,107,138,.15)}
.tx-video-card a{display:block;color:inherit}
.tx-video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.tx-video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.tx-video-card:hover .tx-video-thumb img{transform:scale(1.06)}
.tx-play-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:52px;height:52px;background:rgba(255,107,138,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.tx-play-icon::after{content:"";border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.tx-video-card:hover .tx-play-icon{opacity:1}
.tx-video-stats{position:absolute;bottom:8px;left:8px;display:flex;gap:10px}
.tx-video-stats span{background:rgba(0,0,0,.7);padding:3px 8px;border-radius:4px;font-size:11px;color:#ddd}
.tx-video-info{padding:16px}
.tx-video-info h3{font-size:16px;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tx-video-info p{font-size:13px;color:#9a94ae;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tx-video-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tx-video-tags span{font-size:11px;padding:3px 10px;background:rgba(255,107,138,.1);border-radius:12px;color:#FFB4A2}

/* --- 模块卡片 --- */
.tx-module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tx-module-card{background:linear-gradient(145deg,rgba(255,255,255,.05),rgba(255,107,138,.03));border:1px solid rgba(255,107,138,.1);border-radius:14px;padding:32px 24px;text-align:center;transition:transform .3s,border-color .3s}
.tx-module-card:hover{transform:translateY(-4px);border-color:rgba(255,107,138,.3)}
.tx-module-card .tx-icon{font-size:36px;margin-bottom:16px;display:block}
.tx-module-card h4{font-size:18px;margin-bottom:10px;color:#FF6B8A}
.tx-module-card p{font-size:14px;color:#9a94ae;line-height:1.6}

/* --- 专家展示 --- */
.tx-expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tx-expert-card{background:rgba(255,255,255,.04);border-radius:14px;padding:28px 20px;text-align:center;border:1px solid rgba(255,107,138,.08);transition:transform .3s}
.tx-expert-card:hover{transform:translateY(-4px)}
.tx-expert-avatar{width:80px;height:80px;border-radius:50%;margin:0 auto 16px;background:linear-gradient(135deg,#FF6B8A,#FFB4A2);display:flex;align-items:center;justify-content:center;font-size:32px;color:#fff}
.tx-expert-card h4{font-size:16px;margin-bottom:4px}
.tx-expert-card .tx-role{font-size:13px;color:#FF6B8A;margin-bottom:10px}
.tx-expert-card p{font-size:13px;color:#9a94ae;line-height:1.5;margin-bottom:14px}
.tx-expert-btns{display:flex;gap:8px;justify-content:center}
.tx-expert-btns a{padding:6px 14px;border-radius:6px;font-size:12px;border:1px solid rgba(255,107,138,.3);color:#FFB4A2;transition:all .3s}
.tx-expert-btns a:hover{background:#FF6B8A;color:#fff;border-color:#FF6B8A}

/* --- FAQ --- */
.tx-faq-list{max-width:800px;margin:0 auto}
.tx-faq-item{border:1px solid rgba(255,107,138,.1);border-radius:10px;margin-bottom:12px;overflow:hidden}
.tx-faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:15px;font-weight:600;color:#e8e0f0;transition:background .3s}
.tx-faq-q:hover{background:rgba(255,107,138,.06)}
.tx-faq-q::after{content:"+";font-size:22px;color:#FF6B8A;transition:transform .3s}
.tx-faq-item.active .tx-faq-q::after{transform:rotate(45deg)}
.tx-faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s;padding:0 24px;font-size:14px;color:#9a94ae;line-height:1.8}
.tx-faq-item.active .tx-faq-a{max-height:300px;padding:0 24px 18px}

/* --- 用户评论 --- */
.tx-review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.tx-review-card{background:rgba(255,255,255,.04);border-radius:14px;padding:24px;border:1px solid rgba(255,107,138,.08)}
.tx-review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.tx-review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#FF6B8A,#FFB4A2);display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;font-weight:700}
.tx-review-name{font-size:15px;font-weight:600}
.tx-review-date{font-size:12px;color:#7a7490}
.tx-review-stars{color:#FFB4A2;font-size:14px;margin-bottom:10px}
.tx-review-card p{font-size:14px;color:#b8b2cc;line-height:1.7}

/* --- 合作品牌 --- */
.tx-partner-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center}
.tx-partner-item{width:140px;height:70px;background:rgba(255,255,255,.06);border-radius:10px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,107,138,.08);font-size:14px;color:#9a94ae;font-weight:600;transition:border-color .3s}
.tx-partner-item:hover{border-color:rgba(255,107,138,.3)}

/* --- How-To 指南 --- */
.tx-howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.tx-howto-step{text-align:center;position:relative;counter-increment:step}
.tx-howto-step::before{content:counter(step);display:flex;width:48px;height:48px;background:linear-gradient(135deg,#FF6B8A,#e8527a);border-radius:50%;align-items:center;justify-content:center;margin:0 auto 16px;font-size:20px;font-weight:800;color:#fff}
.tx-howto-step h4{font-size:16px;margin-bottom:8px}
.tx-howto-step p{font-size:13px;color:#9a94ae}

/* --- 联系我们 --- */
.tx-contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;align-items:start}
.tx-contact-info{display:flex;flex-direction:column;gap:20px}
.tx-contact-item{display:flex;align-items:flex-start;gap:14px}
.tx-contact-item .tx-ci-icon{width:42px;height:42px;background:rgba(255,107,138,.12);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.tx-contact-item h5{font-size:15px;margin-bottom:4px}
.tx-contact-item p{font-size:13px;color:#9a94ae}
.tx-qrcode-wrap{display:flex;gap:30px;justify-content:center}
.tx-qrcode-box{text-align:center}
.tx-qrcode-box img{width:160px;height:160px;border-radius:10px;border:2px solid rgba(255,107,138,.2);margin-bottom:10px}
.tx-qrcode-box span{font-size:13px;color:#9a94ae}

/* --- 社交分享 --- */
.tx-share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.tx-share-btn{padding:10px 22px;border-radius:8px;font-size:14px;color:#fff;border:1px solid rgba(255,107,138,.2);background:rgba(255,107,138,.1);transition:all .3s;cursor:pointer}
.tx-share-btn:hover{background:#FF6B8A;border-color:#FF6B8A}

/* --- 页脚 --- */
.tx-footer{background:rgba(0,0,0,.3);border-top:1px solid rgba(255,107,138,.1);padding:40px 0 20px}
.tx-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:30px}
.tx-footer h5{font-size:16px;margin-bottom:16px;color:#FF6B8A}
.tx-footer p,.tx-footer a{font-size:13px;color:#9a94ae;line-height:2}
.tx-footer a:hover{color:#FF6B8A}
.tx-footer-bottom{border-top:1px solid rgba(255,107,138,.08);padding-top:20px;text-align:center;font-size:13px;color:#6a6480}
.tx-footer-bottom .tx-update-time{margin-top:6px;font-size:12px;color:#7a7490}

/* --- 面包屑 --- */
.tx-breadcrumb{padding:14px 0;font-size:13px;color:#7a7490}
.tx-breadcrumb a{color:#9a94ae}
.tx-breadcrumb a:hover{color:#FF6B8A}
.tx-breadcrumb span{margin:0 8px;color:#5a5470}

/* --- 内页视频播放 --- */
.tx-player-wrap{position:relative;padding-top:56.25%;background:#000;border-radius:14px;overflow:hidden;margin-bottom:30px}
.tx-player-wrap iframe,.tx-player-wrap video{position:absolute;inset:0;width:100%;height:100%;border:none}
.tx-video-detail{display:grid;grid-template-columns:2fr 1fr;gap:40px}
.tx-video-main h1{font-size:28px;margin-bottom:16px}
.tx-video-main .tx-meta{display:flex;gap:20px;margin-bottom:20px;font-size:14px;color:#9a94ae}
.tx-video-main .tx-desc{font-size:15px;color:#b8b2cc;line-height:1.8;margin-bottom:24px}
.tx-sidebar-card{background:rgba(255,255,255,.04);border-radius:14px;padding:20px;border:1px solid rgba(255,107,138,.08);margin-bottom:20px}
.tx-sidebar-card h4{font-size:16px;margin-bottom:16px;color:#FF6B8A}
.tx-sidebar-item{display:flex;gap:12px;margin-bottom:14px}
.tx-sidebar-item img{width:120px;height:68px;border-radius:8px;object-fit:cover;flex-shrink:0}
.tx-sidebar-item h5{font-size:14px;margin-bottom:4px}
.tx-sidebar-item p{font-size:12px;color:#9a94ae}

/* --- 懒加载 --- */
img.tx-lazy{opacity:0;transition:opacity .5s}
img.tx-lazy.loaded{opacity:1}

/* --- 响应式 --- */
@media(max-width:1024px){
  .tx-grid{grid-template-columns:repeat(3,1fr)}
  .tx-expert-grid{grid-template-columns:repeat(2,1fr)}
  .tx-footer-grid{grid-template-columns:repeat(2,1fr)}
  .tx-howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .tx-grid{grid-template-columns:repeat(2,1fr)}
  .tx-module-grid{grid-template-columns:1fr}
  .tx-review-grid{grid-template-columns:1fr}
  .tx-video-detail{grid-template-columns:1fr}
  .tx-contact-grid{grid-template-columns:1fr}
  .tx-nav{display:none;position:absolute;top:68px;left:0;width:100%;background:rgba(10,14,39,.98);flex-direction:column;padding:20px;gap:4px;border-bottom:1px solid rgba(255,107,138,.15)}
  .tx-nav.open{display:flex}
  .tx-mobile-toggle{display:block}
  .tx-banner{height:380px}
  .tx-banner h1{font-size:28px}
  .tx-section{padding:40px 0}
  .tx-section-title{font-size:22px}
  .tx-footer-grid{grid-template-columns:1fr}
  .tx-expert-grid{grid-template-columns:1fr}
  .tx-howto-steps{grid-template-columns:1fr}
}
@media(max-width:480px){
  .tx-grid{grid-template-columns:1fr}
  .tx-banner{height:300px}
  .tx-banner h1{font-size:22px}
  .tx-qrcode-wrap{flex-direction:column;align-items:center}
}