/* ============================================
   开元棋牌 - 原创样式表
   品牌色系：深蓝紫 #1a2a6c / 暗红 #b21f1f / 金黄 #fdbb2d
   ============================================ */

/* --- Reset & Base --- */
*,*::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;background:#0d1117;color:#e6edf3;line-height:1.7;overflow-x:hidden}
a{color:#fdbb2d;text-decoration:none;transition:color .3s}
a:hover{color:#ffd666}
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}

/* --- Container --- */
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* --- Header / Navigation --- */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,17,23,.92);backdrop-filter:blur(12px);border-bottom:1px solid #30363d;transition:background .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;max-width:1200px;margin:0 auto;padding:0 20px}
.logo-link{display:flex;align-items:center;gap:10px}
.logo-link img{height:42px;width:auto}
.logo-text{font-size:1.25rem;font-weight:800;color:#fdbb2d;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 14px;border-radius:6px;font-size:.9rem;color:#c9d1d9;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:rgba(253,187,45,.12);color:#fdbb2d}

/* Mobile menu */
.menu-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.menu-toggle span{display:block;width:24px;height:2px;background:#e6edf3;border-radius:2px;transition:all .3s}
.menu-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* --- Search Bar --- */
.search-bar{background:#161b22;border-bottom:1px solid #30363d;padding:12px 0;margin-top:68px}
.search-bar form{display:flex;max-width:600px;margin:0 auto;gap:8px;padding:0 20px}
.search-bar input{flex:1;padding:10px 16px;border:1px solid #30363d;border-radius:8px;background:#0d1117;color:#e6edf3;font-size:.95rem;outline:none;transition:border-color .3s}
.search-bar input:focus{border-color:#fdbb2d}
.search-bar button{padding:10px 24px;background:linear-gradient(135deg,#1a2a6c,#b21f1f);color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:.95rem;transition:opacity .3s}
.search-bar button:hover{opacity:.85}

/* --- Hero Banner --- */
.hero-banner{position:relative;min-height:520px;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-bottom:0}
.hero-banner .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.55)}
.hero-content{position:relative;z-index:2;text-align:center;padding:60px 20px;max-width:800px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.6)}
.hero-content h1 .brand{color:#fdbb2d}
.hero-content p{font-size:1.15rem;color:#c9d1d9;margin-bottom:28px;line-height:1.8}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:24px}
.hero-content .hero-tags span{background:rgba(253,187,45,.15);color:#fdbb2d;padding:4px 14px;border-radius:20px;font-size:.85rem;border:1px solid rgba(253,187,45,.3)}
.btn-primary{display:inline-block;padding:12px 36px;background:linear-gradient(135deg,#fdbb2d,#b21f1f);color:#fff;border-radius:8px;font-size:1rem;font-weight:600;transition:transform .3s,box-shadow .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(253,187,45,.3);color:#fff}
.btn-outline{display:inline-block;padding:12px 36px;border:2px solid #fdbb2d;color:#fdbb2d;border-radius:8px;font-size:1rem;font-weight:600;transition:all .3s;margin-left:12px}
.btn-outline:hover{background:#fdbb2d;color:#0d1117}

/* --- Section Common --- */
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;margin-bottom:8px}
.section-title h2 .highlight{color:#fdbb2d}
.section-title p{color:#8b949e;font-size:1rem}
.section-alt{background:#161b22}

/* --- Video Card Grid --- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:#161b22;border-radius:12px;overflow:hidden;border:1px solid #30363d;transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,.4)}
.video-card .thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .thumb img{transform:scale(1.05)}
.video-card .play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.4);opacity:0;transition:opacity .3s}
.video-card:hover .play-btn{opacity:1}
.play-btn svg{width:56px;height:56px;fill:#fdbb2d;filter:drop-shadow(0 2px 8px rgba(0,0,0,.5))}
.video-card .card-body{padding:16px}
.video-card .card-body h3{font-size:1rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .meta{display:flex;gap:12px;color:#8b949e;font-size:.82rem}
.video-card .meta span{display:flex;align-items:center;gap:4px}
.video-card .tag{display:inline-block;background:rgba(26,42,108,.4);color:#7eb8f7;padding:2px 10px;border-radius:12px;font-size:.75rem;margin-top:8px}

/* --- Module Cards (游戏传媒/娱乐/AI) --- */
.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.module-card{background:linear-gradient(145deg,#161b22,#1c2333);border:1px solid #30363d;border-radius:12px;padding:28px 24px;text-align:center;transition:all .3s}
.module-card:hover{border-color:#fdbb2d;transform:translateY(-3px)}
.module-card .icon{font-size:2.5rem;margin-bottom:14px}
.module-card h4{font-size:1.1rem;margin-bottom:8px;color:#fdbb2d}
.module-card p{font-size:.9rem;color:#8b949e;line-height:1.6}

/* --- Expert Section --- */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:#161b22;border:1px solid #30363d;border-radius:12px;overflow:hidden;text-align:center;transition:all .3s}
.expert-card:hover{border-color:#fdbb2d;transform:translateY(-3px)}
.expert-card .avatar{width:100%;aspect-ratio:4/3;object-fit:cover}
.expert-card .info{padding:20px}
.expert-card .info h4{font-size:1.05rem;margin-bottom:4px}
.expert-card .info .role{color:#fdbb2d;font-size:.85rem;margin-bottom:10px}
.expert-card .info p{font-size:.85rem;color:#8b949e;line-height:1.6;margin-bottom:12px}
.expert-card .actions{display:flex;gap:8px;justify-content:center;padding:0 20px 20px}
.expert-card .actions a{padding:6px 16px;border-radius:6px;font-size:.82rem;border:1px solid #30363d;color:#c9d1d9;transition:all .3s}
.expert-card .actions a:hover{border-color:#fdbb2d;color:#fdbb2d}

/* --- Community Section --- */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}
.community-item{background:#161b22;border:1px solid #30363d;border-radius:10px;padding:20px;text-align:center;transition:all .3s}
.community-item:hover{border-color:#fdbb2d;background:#1c2333}
.community-item .emoji{font-size:2.2rem;margin-bottom:10px}
.community-item h5{font-size:.95rem;margin-bottom:6px}
.community-item p{font-size:.8rem;color:#8b949e}

/* --- FAQ Section --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid #30363d;border-radius:10px;margin-bottom:12px;overflow:hidden;background:#161b22}
.faq-item .faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem;transition:background .3s}
.faq-item .faq-q:hover{background:#1c2333}
.faq-item .faq-q .arrow{transition:transform .3s;color:#fdbb2d;font-size:1.2rem}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 20px}
.faq-item.open .faq-a{max-height:500px;padding:0 20px 16px}
.faq-item .faq-a p{color:#8b949e;font-size:.9rem;line-height:1.7}

/* --- Reviews --- */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#161b22;border:1px solid #30363d;border-radius:12px;padding:24px;transition:all .3s}
.review-card:hover{border-color:#fdbb2d}
.review-card .stars{color:#fdbb2d;font-size:1rem;margin-bottom:10px;letter-spacing:2px}
.review-card .text{font-size:.9rem;color:#c9d1d9;line-height:1.7;margin-bottom:14px;font-style:italic}
.review-card .author{display:flex;align-items:center;gap:10px}
.review-card .author .cf6c8{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#1a2a6c,#fdbb2d);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.85rem;font-weight:700}
.review-card .author .name{font-size:.85rem;color:#e6edf3}
.review-card .author .date{font-size:.75rem;color:#8b949e}

/* --- Contact Section --- */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.contact-card{background:#161b22;border:1px solid #30363d;border-radius:12px;padding:24px;text-align:center}
.contact-card h4{font-size:1rem;margin-bottom:12px;color:#fdbb2d}
.contact-card p{font-size:.88rem;color:#8b949e;line-height:1.7}
.contact-card img{max-width:160px;margin:12px auto 0;border-radius:8px}

/* --- How-To Guide --- */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px;margin-top:24px}
.howto-step{background:#161b22;border:1px solid #30363d;border-radius:12px;padding:24px;text-align:center;position:relative}
.howto-step .tp54gukd{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#1a2a6c,#b21f1f);color:#fff;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700}
.howto-step h5{margin-top:10px;margin-bottom:8px;font-size:.95rem}
.howto-step p{font-size:.85rem;color:#8b949e}

/* --- Share Buttons --- */
.2vhrp{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:20px}
.6fyt0ba{padding:8px 20px;border-radius:8px;font-size:.85rem;color:#fff;border:none;cursor:pointer;transition:opacity .3s}
.6fyt0ba:hover{opacity:.8}
.6fyt0ba.wechat{background:#07c160}
.6fyt0ba.weibo{background:#e6162d}
.6fyt0ba.douyin{background:#161823}
.6fyt0ba.bilibili{background:#00a1d6}

/* --- Footer --- */
.site-footer{background:#0a0e14;border-top:1px solid #30363d;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{font-size:1rem;margin-bottom:14px;color:#fdbb2d}
.footer-col p,.footer-col a{font-size:.85rem;color:#8b949e;line-height:1.8}
.footer-col a:hover{color:#fdbb2d}
.footer-col .footer-logo{height:36px;margin-bottom:10px}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid #30363d;color:#8b949e;font-size:.82rem}
.footer-bottom a{color:#fdbb2d}

/* --- Breadcrumb --- */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#8b949e}
.breadcrumb a{color:#fdbb2d}
.breadcrumb span{margin:0 6px;color:#30363d}

/* --- Inner Page Hero --- */
.inner-hero{background:linear-gradient(135deg,#1a2a6c 0%,#0d1117 100%);padding:80px 0 40px;text-align:center;margin-top:68px}
.inner-hero h1{font-size:2.2rem;margin-bottom:10px}
.inner-hero p{color:#8b949e;font-size:1rem}

/* --- Article Content --- */
.article-content{max-width:900px;margin:0 auto;padding:40px 20px}
.article-content h2{font-size:1.6rem;margin:32px 0 16px;color:#fdbb2d;border-left:4px solid #fdbb2d;padding-left:14px}
.article-content h3{font-size:1.3rem;margin:24px 0 12px}
.article-content p{margin-bottom:16px;color:#c9d1d9;line-height:1.8}
.article-content img{border-radius:10px;margin:20px 0}

/* --- Partner Logos --- */
.gvk75nz2{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;padding:20px 0}
.gvk75nz2 .p1ba8fan{background:#161b22;border:1px solid #30363d;border-radius:10px;padding:16px 28px;display:flex;align-items:center;justify-content:center;min-width:140px;font-size:.9rem;color:#8b949e;transition:all .3s}
.gvk75nz2 .p1ba8fan:hover{border-color:#fdbb2d;color:#fdbb2d}

/* --- Responsive --- */
@media(max-width:768px){
  .menu-toggle{display:flex}
  .main-nav{position:fixed;top:68px;left:0;width:100%;background:#0d1117;flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .3s;border-bottom:1px solid #30363d}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:12px 16px;width:100%;border-radius:8px}
  .hero-content h1{font-size:1.8rem}
  .hero-banner{min-height:380px}
  .section{padding:40px 0}
  .section-title h2{font-size:1.5rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .footer-grid{grid-template-columns:1fr}
  .btn-outline{margin-left:0;margin-top:10px}
  .hero-content .oisr463x{display:flex;flex-direction:column;align-items:center;gap:10px}
}
@media(max-width:480px){
  .header-inner{height:56px}
  .search-bar{margin-top:56px}
  .hero-content h1{font-size:1.5rem}
  .hero-banner{min-height:300px}
  .video-grid{grid-template-columns:1fr}
  .module-grid{grid-template-columns:1fr}
}

/* --- Lazy Load --- */
img[loading="lazy"]{opacity:0;transition:opacity .5s}
img[loading="lazy"].loaded,img[loading="lazy"][src]{opacity:1}

/* --- Scrollbar --- */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#0d1117}
::-webkit-scrollbar-thumb{background:#30363d;border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:#484f58}

/* --- Animations --- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.barw1{animation:fadeInUp .6s ease forwards}

/* --- MCP Service Widget (Frontend Only) --- */
.ho4ai{background:#161b22;border:1px solid #30363d;border-radius:10px;padding:20px;margin-top:20px}
.ho4ai h5{color:#fdbb2d;margin-bottom:10px;font-size:.95rem}
.ho4ai .buga2{display:flex;align-items:center;gap:8px;font-size:.85rem;color:#8b949e}
.ho4ai .lboue3{width:8px;height:8px;border-radius:50%;background:#3fb950}


/* --- Navigation Logo Styles --- */
.nav-logo{height:36px;width:auto}
.nav-icon{height:28px;width:28px;display:none}
@media(max-width:768px){
  .nav-logo{display:none}
  .nav-icon{display:block}
}

/* --- Video Duration Tag --- */
.video-card .thumb .duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.78);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:600;z-index:2}

/* --- Card Author Info --- */
.video-card .card-author{font-size:.8rem;color:#8b949e;margin-bottom:6px}

/* --- Hero Update Info --- */
.ss1p543{margin-top:20px;font-size:.82rem;color:#8b949e;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

/* --- Expert Credentials --- */
.mnaerm{font-size:.78rem;color:#fdbb2d;margin-top:8px;padding-top:8px;border-top:1px solid #30363d}

/* --- Video Modal --- */
.video-modal{display:none;position:fixed;inset:0;z-index:2000;align-items:center;justify-content:center}
.video-modal.active{display:flex}
.video-modal .modal-overlay{position:absolute;inset:0;background:rgba(0,0,0,.85)}
.video-modal .modal-content{position:relative;z-index:2;background:#161b22;border:1px solid #30363d;border-radius:16px;max-width:720px;width:90%;overflow:hidden;padding:0}
.video-modal .modal-close{position:absolute;top:12px;right:16px;background:none;border:none;color:#fff;font-size:2rem;cursor:pointer;z-index:3;line-height:1;transition:color .3s}
.video-modal .modal-close:hover{color:#fdbb2d}
.video-modal .modal-player{position:relative;width:100%;padding-top:56.25%;overflow:hidden}
.video-modal .modal-player img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.video-modal .modal-play-icon{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.3)}
.video-modal .modal-play-icon svg{width:72px;height:72px;fill:#fdbb2d;filter:drop-shadow(0 4px 12px rgba(0,0,0,.6));cursor:pointer;transition:transform .3s}
.video-modal .modal-play-icon svg:hover{transform:scale(1.1)}
.video-modal h3{padding:16px 20px 0;font-size:1.1rem}
.video-modal p{padding:0 20px 20px}

/* --- Share Button as Link --- */
a.6fyt0ba{display:inline-block;text-decoration:none;text-align:center}