/* ============================================
   51吃瓜官网 - 翡翠森林主题原创样式
   域名: shqdyx.cn
   配色: 翡翠绿 + 琥珀金 + 深海蓝黑
   ============================================ */

/* === 基础重置与全局 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:#0b1120;color:#e8edf5;line-height:1.7;overflow-x:hidden}
a{color:#0d9b76;text-decoration:none;transition:color .25s}
a:hover{color:#f7c948}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 顶部导航 === */
.top-bar{position:fixed;top:0;left:0;width:100%;z-index:9999;background:rgba(11,17,32,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(13,155,118,.12);transition:box-shadow .3s}
.top-bar .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand-link{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700;color:#f7c948;letter-spacing:1px}
.brand-link img{width:42px;height:42px;border-radius:8px}
.nav-list{display:flex;gap:6px;list-style:none}
.nav-list li a{display:block;padding:8px 14px;font-size:.88rem;color:#8b95a8;border-radius:6px;transition:all .25s;position:relative}
.nav-list li a:hover,.nav-list li a.cur{color:#0d9b76;background:rgba(13,155,118,.08)}
.nav-list li a.cur::after{content:"";position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:18px;height:2px;background:#0d9b76;border-radius:1px}
.search-toggle{background:none;border:1px solid rgba(13,155,118,.3);color:#0d9b76;width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:all .25s}
.search-toggle:hover{background:rgba(13,155,118,.15);border-color:#0d9b76}
.burger{display:none;background:none;border:none;color:#f7c948;font-size:1.6rem;cursor:pointer;padding:4px}

/* === 搜索浮层 === */
.search-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(11,17,32,.88);z-index:10000;display:none;align-items:flex-start;justify-content:center;padding-top:120px;backdrop-filter:blur(6px)}
.search-overlay.open{display:flex}
.search-box{width:90%;max-width:620px;position:relative}
.search-box input{width:100%;padding:16px 60px 16px 24px;font-size:1.05rem;border:2px solid #0d9b76;border-radius:40px;background:rgba(17,27,46,.95);color:#e8edf5;outline:none;transition:border-color .3s;-webkit-appearance:none}
.search-box input:focus{border-color:#f7c948}
.search-box input::placeholder{color:#556}
.search-box .s-btn{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:linear-gradient(135deg,#0d9b76,#067a5e);border:none;color:#fff;padding:10px 22px;border-radius:30px;cursor:pointer;font-size:.92rem;transition:opacity .25s}
.search-box .s-btn:hover{opacity:.85}
.search-close{position:absolute;top:30px;right:40px;background:none;border:none;color:#8b95a8;font-size:2rem;cursor:pointer}

/* === 主横幅 === */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;margin-top:68px}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;filter:brightness(.45)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,17,32,.85) 0%,rgba(13,155,118,.15) 50%,rgba(11,17,32,.7) 100%)}
.hero-content{position:relative;z-index:2;max-width:640px;padding:40px 0}
.hero-content .wrap{padding:0 40px}
.hero-badge{display:inline-block;padding:6px 16px;background:rgba(13,155,118,.15);border:1px solid rgba(13,155,118,.4);border-radius:20px;font-size:.78rem;color:#0d9b76;margin-bottom:18px;letter-spacing:1px}
.hero-content h1{font-size:2.8rem;font-weight:800;line-height:1.25;margin-bottom:16px;background:linear-gradient(135deg,#e8edf5,#f7c948);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content .tagline{font-size:1.08rem;color:#8b95a8;line-height:1.8;margin-bottom:32px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:13px 30px;background:linear-gradient(135deg,#0d9b76,#067a5e);color:#fff;border-radius:30px;font-size:.95rem;font-weight:600;transition:transform .2s,box-shadow .2s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(13,155,118,.35);color:#fff}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:13px 30px;background:transparent;color:#f7c948;border:1px solid rgba(247,201,72,.4);border-radius:30px;font-size:.95rem;font-weight:600;transition:all .2s;cursor:pointer}
.btn-ghost:hover{background:rgba(247,201,72,.08);border-color:#f7c948;color:#f7c948}

/* === 统计条 === */
.stats-strip{background:rgba(17,27,46,.6);border-top:1px solid rgba(13,155,118,.1);border-bottom:1px solid rgba(13,155,118,.1);padding:28px 0}
.stats-strip .wrap{display:flex;justify-content:space-around;flex-wrap:wrap;gap:20px}
.stat-item{text-align:center}
.stat-num{font-size:2rem;font-weight:800;color:#f7c948;display:block}
.stat-label{font-size:.82rem;color:#8b95a8;margin-top:4px}

/* === 通用板块 === */
.section{padding:70px 0}
.section-head{text-align:center;margin-bottom:48px}
.section-head h2{font-size:1.9rem;font-weight:700;margin-bottom:10px;color:#e8edf5}
.section-head h2 em{font-style:normal;color:#0d9b76}
.section-head .sub{font-size:.92rem;color:#8b95a8;max-width:600px;margin:0 auto}
.section-alt{background:rgba(17,27,46,.4)}

/* === 视频卡片网格 === */
.vid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.vid-card{position:relative;border-radius:12px;overflow:hidden;background:#111b2e;cursor:pointer;transition:transform .3s,box-shadow .3s}
.vid-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(0,0,0,.4)}
.vid-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.vid-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.vid-card:hover .vid-thumb img{transform:scale(1.08)}
.vid-dur{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;font-size:.72rem;padding:2px 8px;border-radius:4px}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:52px;height:52px;background:rgba(232,77,108,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s;pointer-events:none}
.play-btn::after{content:"";border-style:solid;border-width:9px 0 9px 16px;border-color:transparent transparent transparent #fff;margin-left:3px}
.vid-card:hover .play-btn{transform:translate(-50%,-50%) scale(1)}
.vid-info{padding:14px 16px}
.vid-info h4{font-size:.88rem;font-weight:600;color:#e8edf5;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.vid-meta{display:flex;gap:14px;font-size:.75rem;color:#8b95a8}

/* === 传媒横滚 === */
.media-scroll{display:flex;gap:20px;overflow-x:auto;padding-bottom:16px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.media-scroll::-webkit-scrollbar{height:4px}
.media-scroll::-webkit-scrollbar-thumb{background:#0d9b76;border-radius:2px}
.media-card{min-width:280px;flex-shrink:0;background:linear-gradient(145deg,#111b2e,#0f1828);border:1px solid rgba(13,155,118,.1);border-radius:14px;padding:28px 24px;scroll-snap-align:start;transition:border-color .3s}
.media-card:hover{border-color:rgba(13,155,118,.4)}
.media-icon{width:48px;height:48px;background:rgba(13,155,118,.12);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:16px}
.media-card h4{font-size:1rem;font-weight:600;margin-bottom:8px;color:#e8edf5}
.media-card p{font-size:.84rem;color:#8b95a8;line-height:1.7}

/* === AI赋能 左右交替 === */
.ai-row{display:flex;align-items:center;gap:50px;margin-bottom:50px}
.ai-row:nth-child(even){flex-direction:row-reverse}
.ai-img{flex:1;border-radius:16px;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.3)}
.ai-img img{width:100%;display:block;transition:transform .4s}
.ai-img:hover img{transform:scale(1.03)}
.ai-text{flex:1}
.ai-text h3{font-size:1.4rem;font-weight:700;margin-bottom:12px;color:#e8edf5}
.ai-text h3 em{font-style:normal;color:#f7c948}
.ai-text p{font-size:.92rem;color:#8b95a8;line-height:1.8;margin-bottom:16px}
.ai-tag{display:inline-block;padding:4px 12px;background:rgba(13,155,118,.1);border:1px solid rgba(13,155,118,.25);border-radius:14px;font-size:.76rem;color:#0d9b76;margin-right:6px;margin-bottom:6px}

/* === 专家团队 === */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.team-card{text-align:center;background:linear-gradient(180deg,rgba(17,27,46,.6),rgba(11,17,32,.9));border:1px solid rgba(13,155,118,.08);border-radius:16px;padding:32px 20px 24px;transition:border-color .3s,transform .3s}
.team-card:hover{border-color:rgba(247,201,72,.3);transform:translateY(-4px)}
.team-avatar{width:96px;height:96px;border-radius:50%;margin:0 auto 16px;border:3px solid rgba(13,155,118,.3);overflow:hidden}
.team-avatar img{width:100%;height:100%;object-fit:cover}
.team-card h4{font-size:1rem;font-weight:600;color:#e8edf5;margin-bottom:4px}
.team-role{font-size:.78rem;color:#0d9b76;margin-bottom:10px;display:block}
.team-card p{font-size:.82rem;color:#8b95a8;line-height:1.6}

/* === 社区六宫格 === */
.hex-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.hex-item{background:linear-gradient(145deg,#111b2e,#0f1828);border:1px solid rgba(13,155,118,.08);border-radius:14px;padding:28px 22px;transition:all .3s}
.hex-item:hover{border-color:#0d9b76;background:rgba(13,155,118,.06)}
.hex-item .hi-icon{font-size:1.8rem;margin-bottom:12px}
.hex-item h4{font-size:.98rem;font-weight:600;color:#e8edf5;margin-bottom:8px}
.hex-item p{font-size:.82rem;color:#8b95a8;line-height:1.7}

/* === FAQ 双栏 === */
.faq-wrap{display:flex;gap:40px}
.faq-list{flex:1}
.faq-item{background:rgba(17,27,46,.5);border:1px solid rgba(13,155,118,.08);border-radius:10px;margin-bottom:12px;overflow:hidden;transition:border-color .3s}
.faq-item:hover,.faq-item.on{border-color:rgba(13,155,118,.3)}
.faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:.9rem;font-weight:600;color:#e8edf5}
.faq-q .arrow{color:#0d9b76;transition:transform .3s;font-size:.8rem}
.faq-item.on .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s;padding:0 20px}
.faq-item.on .faq-a{max-height:300px;padding:0 20px 16px}
.faq-a p{font-size:.84rem;color:#8b95a8;line-height:1.8}

/* === 用户评价横滚 === */
.review-scroll{display:flex;gap:20px;overflow-x:auto;padding-bottom:16px;scroll-snap-type:x mandatory}
.review-scroll::-webkit-scrollbar{height:4px}
.review-scroll::-webkit-scrollbar-thumb{background:#f7c948;border-radius:2px}
.review-card{min-width:320px;flex-shrink:0;background:linear-gradient(145deg,#111b2e,#0f1828);border:1px solid rgba(247,201,72,.08);border-radius:14px;padding:24px;scroll-snap-align:start}
.review-stars{color:#f7c948;font-size:.9rem;margin-bottom:10px;letter-spacing:2px}
.review-card blockquote{font-size:.86rem;color:#8b95a8;line-height:1.75;margin-bottom:14px;font-style:italic}
.review-author{display:flex;align-items:center;gap:10px}
.review-author .ra-circle{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#0d9b76,#067a5e);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.85rem}
.review-author .ra-name{font-size:.82rem;color:#e8edf5;font-weight:600}
.review-author .ra-date{font-size:.72rem;color:#556}

/* === 步骤流程 === */
.steps-row{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}
.step-card{flex:1;min-width:200px;max-width:280px;text-align:center;position:relative}
.step-num{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#0d9b76,#067a5e);color:#fff;font-size:1.3rem;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.step-card h4{font-size:.95rem;font-weight:600;color:#e8edf5;margin-bottom:8px}
.step-card p{font-size:.82rem;color:#8b95a8;line-height:1.7}

/* === 分享栏 === */
.share-bar{text-align:center;padding:40px 0;border-top:1px solid rgba(13,155,118,.08)}
.share-bar h3{font-size:1.1rem;color:#e8edf5;margin-bottom:16px}
.share-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.share-btns button{padding:10px 22px;border:1px solid rgba(13,155,118,.2);background:rgba(17,27,46,.5);color:#8b95a8;border-radius:8px;cursor:pointer;font-size:.82rem;transition:all .25s}
.share-btns button:hover{border-color:#0d9b76;color:#0d9b76;background:rgba(13,155,118,.06)}

/* === 页脚 === */
.site-footer{background:rgba(8,12,22,.95);border-top:1px solid rgba(13,155,118,.1);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .fb-desc{font-size:.84rem;color:#8b95a8;line-height:1.7;margin:14px 0}
.footer-col h5{font-size:.9rem;font-weight:600;color:#e8edf5;margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid rgba(13,155,118,.1)}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:.82rem;color:#8b95a8;transition:color .2s}
.footer-col ul li a:hover{color:#0d9b76}
.footer-qr{display:flex;gap:16px;margin-top:12px}
.footer-qr figure{text-align:center}
.footer-qr figure img{width:88px;height:88px;border-radius:6px;border:1px solid rgba(13,155,118,.15)}
.footer-qr figure figcaption{font-size:.7rem;color:#556;margin-top:4px}
.footer-bottom{border-top:1px solid rgba(13,155,118,.06);padding:18px 0;text-align:center}
.footer-bottom p{font-size:.78rem;color:#556}
.footer-bottom a{color:#0d9b76}

/* === 面包屑 === */
.breadcrumb{padding:90px 0 10px;font-size:.82rem;color:#556}
.breadcrumb a{color:#0d9b76}
.breadcrumb span{margin:0 6px;color:#334}

/* === 内页通用 === */
.page-hero{position:relative;padding:140px 0 60px;text-align:center;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,17,32,.9),rgba(13,155,118,.08),rgba(11,17,32,.95));z-index:0}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:2.2rem;font-weight:800;margin-bottom:12px;color:#e8edf5}
.page-hero .ph-sub{font-size:1rem;color:#8b95a8;max-width:560px;margin:0 auto}

/* === 内容区 === */
.content-area{padding:50px 0}
.content-area h2{font-size:1.5rem;font-weight:700;color:#e8edf5;margin:36px 0 14px;padding-left:14px;border-left:3px solid #0d9b76}
.content-area h3{font-size:1.2rem;font-weight:600;color:#e8edf5;margin:24px 0 10px}
.content-area p{font-size:.9rem;color:#8b95a8;line-height:1.85;margin-bottom:16px}
.content-area ul,.content-area ol{margin:0 0 16px 24px;color:#8b95a8;font-size:.88rem}
.content-area li{margin-bottom:6px;line-height:1.7}

/* === 联系表单 === */
.contact-form{max-width:600px;margin:0 auto}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:.84rem;color:#8b95a8;margin-bottom:6px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;background:rgba(17,27,46,.6);border:1px solid rgba(13,155,118,.15);border-radius:8px;color:#e8edf5;font-size:.88rem;outline:none;transition:border-color .3s;font-family:inherit}
.form-group input:focus,.form-group textarea:focus{border-color:#0d9b76}
.form-group textarea{min-height:120px;resize:vertical}

/* === 响应式 === */
@media(max-width:1024px){
  .vid-grid{grid-template-columns:repeat(3,1fr)}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .ai-row,.ai-row:nth-child(even){flex-direction:column;gap:30px}
}
@media(max-width:768px){
  .nav-list{position:fixed;top:68px;left:0;width:100%;background:rgba(11,17,32,.98);flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .35s;border-bottom:1px solid rgba(13,155,118,.1)}
  .nav-list.show{transform:translateY(0)}
  .burger{display:block}
  .search-toggle{display:none}
  .hero-content h1{font-size:1.9rem}
  .vid-grid{grid-template-columns:repeat(2,1fr)}
  .hex-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{flex-direction:column}
  .footer-grid{grid-template-columns:1fr}
  .stats-strip .wrap{justify-content:center}
  .hero{min-height:75vh}
  .steps-row{flex-direction:column;align-items:center}
}
@media(max-width:480px){
  .vid-grid{grid-template-columns:1fr}
  .hex-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:1fr}
  .hero-content h1{font-size:1.5rem}
  .hero-btns{flex-direction:column}
}