/* ===== 四虎视频社区 - 全局样式 | bdbart.cn ===== */
:root{
    --primary:       #1a6b2f;
    --primary-dark:  #0d3d1a;
    --primary-light: #2d8a45;
    --accent:        #4caf50;
    --accent2:       #e8f5e9;
    --white:         #ffffff;
    --bg:            #f8fdf9;
    --text:          #1a2a1e;
    --text-light:    #4a6550;
    --border:        #d0e8d4;
    --shadow:        0 4px 24px rgba(26,107,47,.10);
    --shadow-hover:  0 8px 32px rgba(26,107,47,.18);
    --radius:        12px;
    --radius-sm:     8px;
    --transition:    .2s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-text-size-adjust:100%}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-light)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 顶部公告栏 ===== */
.rw6wtdc{background:var(--primary);color:rgba(255,255,255,.9);font-size:.82rem;padding:7px 0;text-align:center;letter-spacing:.02em}
.rw6wtdc .container{display:flex;align-items:center;justify-content:center;gap:8px}

/* ===== 头部 ===== */
.site-header{background:var(--white);box-shadow:0 2px 12px rgba(26,107,47,.08);position:sticky;top:0;z-index:1000;border-bottom:2px solid var(--accent2)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:24px;height:64px}
.logo-wrap{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-wrap img{width:44px;height:44px;object-fit:contain;border-radius:8px}
.logo-text{font-size:1.5rem;font-weight:800;color:var(--primary);letter-spacing:.05em}
.logo-text span{color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{padding:8px 14px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;color:var(--text);transition:all var(--transition);white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:var(--accent2);color:var(--primary);font-weight:600}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;border-radius:6px;margin-left:auto}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--primary);border-radius:2px;transition:all var(--transition)}

/* ===== 搜索栏 ===== */
.fwy2y{background:var(--accent2);border-bottom:1px solid var(--border);padding:10px 0}
.ywjji6w{max-width:800px;margin:0 auto;padding:0 20px}
.ywjji6w form{display:flex;gap:8px}
.ywjji6w input{flex:1;padding:10px 16px;border:1.5px solid var(--border);border-radius:30px;font-size:.95rem;outline:none;background:var(--white);color:var(--text);transition:border-color var(--transition)}
.ywjji6w input:focus{border-color:var(--primary)}
.ywjji6w button{padding:10px 22px;background:var(--primary);color:var(--white);border:none;border-radius:30px;font-size:.95rem;font-weight:600;cursor:pointer;white-space:nowrap;transition:background var(--transition)}
.ywjji6w button:hover{background:var(--primary-light)}
/* 搜索提示 toast */
.txbbh27g{position:fixed;top:80px;right:20px;background:var(--primary);color:#fff;padding:12px 22px;border-radius:var(--radius-sm);z-index:9999;font-size:.95rem;box-shadow:var(--shadow);animation:fadeIn .3s ease}

/* ===== Banner ===== */
.gnhiosqr{position:relative;height:520px;overflow:hidden;display:flex;align-items:center}
.n8mn9p{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.w5zwoa{position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,61,26,.75) 0%,rgba(26,107,47,.55) 100%)}
.ew8uyy5{position:relative;z-index:2;color:var(--white);width:100%}
.ew8uyy5 h1{font-size:2.8rem;font-weight:800;margin-bottom:12px;text-shadow:0 2px 8px rgba(0,0,0,.3);line-height:1.2}
.ew8uyy5 .subtitle{font-size:1.25rem;opacity:.9;margin-bottom:10px;font-weight:500}
.ew8uyy5 .dnxy4p{font-size:1rem;opacity:.85;max-width:600px;margin-bottom:28px;line-height:1.8}
.hq1v0{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:6px;padding:13px 28px;border-radius:30px;font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition);border:2px solid transparent;text-decoration:none}
.btn-primary{background:var(--accent);color:var(--white);border-color:var(--accent)}
.btn-primary:hover{background:var(--primary-light);border-color:var(--primary-light);color:var(--white);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-outline{background:transparent;color:var(--white);border-color:rgba(255,255,255,.7)}
.btn-outline:hover{background:rgba(255,255,255,.15);color:var(--white)}
.btn-sm{padding:8px 18px;font-size:.88rem}

/* ===== 统计数字 ===== */
.p535poe{display:flex;gap:0;flex-wrap:wrap;background:var(--primary);border-radius:var(--radius);overflow:hidden;margin-bottom:60px;box-shadow:var(--shadow)}
.nc4tz{flex:1;min-width:150px;text-align:center;padding:28px 20px;border-right:1px solid rgba(255,255,255,.15)}
.nc4tz:last-child{border-right:none}
.fue1ryc0{font-size:2.2rem;font-weight:800;color:var(--white)}
.ts7invu{font-size:.88rem;color:rgba(255,255,255,.8);margin-top:4px}

/* ===== 通用区块 ===== */
.section{padding:64px 0}
.payvx9{background:var(--accent2)}
.bv1mzj{text-align:center;margin-bottom:44px}
.bv1mzj .tag{display:inline-block;background:var(--primary);color:var(--white);font-size:.78rem;padding:3px 14px;border-radius:20px;margin-bottom:10px;letter-spacing:.04em}
.bv1mzj h2{font-size:2rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.bv1mzj p{color:var(--text-light);font-size:1rem}

/* ===== 视频卡片 ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);cursor:pointer}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#111}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;display:block}
.video-card:hover .video-thumb img{transform:scale(1.05)}
/* 播放按钮 - PC hover + 移动端触控 */
.play-btn{
    position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
    background:rgba(0,0,0,.35);
    opacity:0;transition:opacity var(--transition);
}
.video-card:hover .play-btn,
.video-card:focus .play-btn,
.video-card.touch-active .play-btn{opacity:1}
.play-btn svg{width:52px;height:52px;fill:rgba(255,255,255,.95);filter:drop-shadow(0 2px 8px rgba(0,0,0,.4));transition:transform var(--transition)}
.video-card:hover .play-btn svg{transform:scale(1.1)}
/* 移动端：始终显示半透明播放按钮 */
@media(hover:none){
    .play-btn{opacity:.6}
}
.video-badge{position:absolute;top:10px;left:10px;background:var(--primary);color:#fff;font-size:.72rem;padding:3px 10px;border-radius:20px;font-weight:600;z-index:2}
.video-info{padding:14px 16px}
.video-info h3{font-size:.95rem;font-weight:600;color:var(--text);margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:.8rem;color:var(--text-light)}

/* ===== 功能卡片 ===== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.card{background:var(--white);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);transition:all var(--transition);border:1px solid var(--border)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent)}
.card-icon{font-size:2.2rem;margin-bottom:14px}
.card h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.card p{font-size:.93rem;color:var(--text-light);line-height:1.7}
.card a{color:var(--primary);font-weight:600;font-size:.9rem}
.card a:hover{color:var(--primary-light)}

/* ===== 专家卡片 ===== */
.d48ez{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:28px}
.wnhhcg{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);border:1px solid var(--border)}
.wnhhcg:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.k9rlf4{width:100%;height:200px;object-fit:cover}
.zeqe7{padding:20px}
.zeqe7 h3{font-size:1.1rem;font-weight:700;color:var(--primary);margin-bottom:4px}
.zeqe7 .role{font-size:.85rem;color:var(--accent);font-weight:600;margin-bottom:10px}
.zeqe7 p{font-size:.88rem;color:var(--text-light);line-height:1.6;margin-bottom:12px}
.vm7v6p{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.vm7v6p span{background:var(--accent2);color:var(--primary);font-size:.75rem;padding:2px 10px;border-radius:20px}
.e49f9{display:flex;gap:8px;flex-wrap:wrap}

/* ===== 评价卡片 ===== */
.tu7nf0rs{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.n3v1h{background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.x72w21q{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.oe4rtl{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:700;flex-shrink:0}
.dy025b{font-weight:600;color:var(--text);font-size:.95rem}
.tml0b76{font-size:.78rem;color:var(--text-light)}
.frtj1kx{color:#f5a623;font-size:1.1rem;margin-bottom:10px}
.omuqn{font-size:.88rem;color:var(--text-light);line-height:1.7;font-style:italic}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;background:var(--white)}
.faq-q{padding:16px 20px;font-weight:600;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background var(--transition);font-size:.97rem}
.faq-q:hover{background:var(--accent2)}
.faq-item.open .faq-q{background:var(--accent2);color:var(--primary)}
.faq-a{display:none;padding:0 20px 16px;font-size:.92rem;color:var(--text-light);line-height:1.8}
.faq-item.open .faq-a{display:block}
.arrow{font-size:.8rem;transition:transform var(--transition);color:var(--primary)}
.faq-item.open .arrow{transform:rotate(180deg)}

/* ===== 品牌墙 ===== */
.ab3jqw{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.xpgieqf{background:var(--white);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:14px 24px;font-size:1rem;font-weight:600;color:var(--primary);transition:all var(--transition)}
.xpgieqf:hover{background:var(--primary);color:var(--white);border-color:var(--primary)}

/* ===== 联系页 ===== */
.l4fzn53{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.a54hc h3{font-size:1.2rem;font-weight:700;color:var(--primary);margin-bottom:16px}
.a54hc .w73iva8{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:.95rem}
.a54hc .w73iva8 strong{color:var(--primary);min-width:70px}
.z8eku{display:flex;gap:24px;flex-wrap:wrap}
.ktooy9vk{text-align:center}
.ktooy9vk img{width:120px;height:120px;object-fit:contain;border:1px solid var(--border);border-radius:8px}
.ktooy9vk p{font-size:.82rem;color:var(--text-light);margin-top:6px}

/* ===== 分享按钮 ===== */
.qdmqqx{display:flex;gap:12px;flex-wrap:wrap}
.hauwjg1{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:30px;font-size:.9rem;font-weight:500;cursor:pointer;border:none;transition:all var(--transition)}
.b2pg4vtj{background:#07c160;color:#fff}
.pnn49yk{background:#e6162d;color:#fff}
.ga9b2j{background:#010101;color:#fff}
.u7moc{background:#00a1d6;color:#fff}
.hauwjg1:hover{opacity:.85;transform:translateY(-2px)}

/* ===== 面包屑 ===== */
.breadcrumb{padding:12px 0;font-size:.88rem;color:var(--text-light)}
.breadcrumb a{color:var(--primary)}
.breadcrumb span{margin:0 6px}

/* ===== 内页头部 ===== */
.aepiir2{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:56px 0;color:var(--white);text-align:center}
.aepiir2 h1{font-size:2.4rem;font-weight:800;margin-bottom:10px}
.aepiir2 p{font-size:1rem;opacity:.85}

/* ===== 标签列表 ===== */
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tag-list span{background:var(--accent2);color:var(--primary);font-size:.78rem;padding:3px 12px;border-radius:20px;cursor:pointer;transition:all var(--transition)}
.tag-list span:hover{background:var(--primary);color:var(--white)}

/* ===== 视频播放弹窗（H5 video）===== */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:9999;align-items:center;justify-content:center;padding:16px}
.modal-overlay.show{display:flex}
.modal-box{background:#000;border-radius:var(--radius);overflow:hidden;max-width:860px;width:100%;position:relative;box-shadow:0 8px 48px rgba(0,0,0,.6)}
.modal-close{position:absolute;top:10px;right:14px;background:rgba(255,255,255,.15);border:none;color:#fff;font-size:1.6rem;cursor:pointer;z-index:10;line-height:1;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background var(--transition)}
.modal-close:hover{background:rgba(255,255,255,.3)}
.modal-video-wrap{width:100%}
.modal-video-el{width:100%;aspect-ratio:16/9;background:#111;display:block;max-height:70vh}
.modal-video-info{padding:14px 18px;background:#111;color:rgba(255,255,255,.85)}
.modal-video-title{font-size:.97rem;font-weight:600;margin-bottom:4px}
.modal-video-sub{font-size:.82rem;color:rgba(255,255,255,.55)}
.modal-video-sub a{color:var(--accent)}

/* ===== 页脚 ===== */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.85);padding:50px 0 0}
.z5vp4{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.mik67wd .logo-text{color:var(--white);font-size:1.3rem;margin-bottom:12px}
.mik67wd p{font-size:.9rem;color:rgba(255,255,255,.65);line-height:1.8}
.d9gjhen h4{font-size:1rem;font-weight:600;color:var(--white);margin-bottom:16px}
.d9gjhen ul li{margin-bottom:8px}
.d9gjhen ul li a{font-size:.88rem;color:rgba(255,255,255,.65);transition:color var(--transition)}
.d9gjhen ul li a:hover{color:var(--white)}
.iy4wnzy{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:.85rem;color:rgba(255,255,255,.5)}
.iy4wnzy a{color:rgba(255,255,255,.7)}

/* ===== 回到顶部 ===== */
#backTop{display:none;position:fixed;bottom:28px;right:24px;width:44px;height:44px;background:var(--primary);color:#fff;border:none;border-radius:50%;cursor:pointer;align-items:center;justify-content:center;font-size:1.3rem;box-shadow:var(--shadow);z-index:999;transition:all var(--transition)}
#backTop:hover{background:var(--primary-light);transform:translateY(-3px)}

/* ===== 懒加载 ===== */
img[data-src]{background:var(--accent2)}
.lazy-loaded{animation:fadeIn .4s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ===== 隐藏干扰标签（不破坏布局）===== */
.jtw8zna,#b0tkm,#c5p1r,#h1x5y,.k7m9n,#n8v5t,.id03eay,#t7c4d,.c3p8qmoq,#z8o5p,
.cnkvq3q,#ii7jj8,.xoctej,#oo3pp4,.w6kulo9g,#uu9vv0,.azfn4,#gg1hh2,.g37yqk,#ss3tt4,
.p8jgr,#ee5ff6y{font-size:0;line-height:0;height:0;overflow:hidden;visibility:hidden;pointer-events:none}

/* ===== 响应式 ===== */
@media(max-width:1024px){
    .z5vp4{grid-template-columns:1fr 1fr}
    .l4fzn53{grid-template-columns:1fr}
}
@media(max-width:768px){
    .ew8uyy5 h1{font-size:2rem}
    .gnhiosqr{height:400px}
    .main-nav{
        display:none;position:absolute;top:64px;left:0;right:0;
        background:var(--white);flex-direction:column;padding:12px 16px;
        box-shadow:0 8px 24px rgba(0,0,0,.1);z-index:999;gap:4px
    }
    .main-nav.open{display:flex}
    .nav-toggle{display:flex}
    .section{padding:44px 0}
    .bv1mzj h2{font-size:1.6rem}
    .z5vp4{grid-template-columns:1fr}
    .p535poe{flex-direction:column}
    .nc4tz{border-right:none;border-bottom:1px solid rgba(255,255,255,.15)}
    .video-grid{grid-template-columns:1fr}
    .hq1v0{flex-direction:column;align-items:flex-start}
}
@media(max-width:480px){
    .ew8uyy5 h1{font-size:1.6rem}
    .card-grid,.d48ez,.tu7nf0rs{grid-template-columns:1fr}
    .bv1mzj h2{font-size:1.4rem}
    .modal-video-el{max-height:55vw}
}
/* 触屏设备视频卡片优化 */
@media(hover:none) and (pointer:coarse){
    .play-btn{opacity:.65;background:rgba(0,0,0,.25)}
    .video-card:active .play-btn{opacity:1;background:rgba(0,0,0,.5)}
    .video-card:active .play-btn svg{transform:scale(1.15)}
}