/* ============================================
   网红主播 - 游戏解说与视频社区 原创样式
   配色：深空蓝 #0B1426 / 电竞紫 #7C3AED / 霓虹青 #06D6A0 / 烈焰橙 #F97316
   ============================================ */
*{margin:0;padding:0;box-sizing:border-box}
:root{--bg-dark:#0B1426;--bg-card:#111D35;--bg-section:#0E1A2E;--purple:#7C3AED;--cyan:#06D6A0;--orange:#F97316;--pink:#EC4899;--text:#E2E8F0;--text-muted:#94A3B8;--border:#1E3A5F;--radius:12px;--shadow:0 4px 24px rgba(0,0,0,.4)}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;background:var(--bg-dark);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--cyan);text-decoration:none;transition:color .3s}
a:hover{color:var(--orange)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
/* 干扰标签隐藏 */
.txv-noise{position:absolute;left:-9999px;top:-9999px;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none}
/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(11,20,38,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:all .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;max-width:1200px;margin:0 auto;padding:0 20px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-text{font-size:1.3rem;font-weight:700;background:linear-gradient(135deg,var(--purple),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.main-nav{display:flex;gap:6px}
.main-nav a{padding:8px 16px;border-radius:8px;font-size:.92rem;color:var(--text-muted);transition:all .3s}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(124,58,237,.25)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}
/* ===== Search Bar ===== */
.search-bar{background:var(--bg-section);padding:14px 0;border-bottom:1px solid var(--border);margin-top:68px}
.search-wrap{display:flex;max-width:600px;margin:0 auto;gap:0}
.search-wrap input{flex:1;padding:10px 18px;border:2px solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);background:var(--bg-card);color:var(--text);font-size:.95rem;outline:none;transition:border-color .3s}
.search-wrap input:focus{border-color:var(--purple)}
.search-wrap button{padding:10px 24px;background:linear-gradient(135deg,var(--purple),var(--pink));color:#fff;border:none;border-radius:0 var(--radius) var(--radius) 0;cursor:pointer;font-size:.95rem;transition:opacity .3s}
.search-wrap button:hover{opacity:.85}
/* ===== Banner ===== */
.hero-banner{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,20,38,.3) 0%,rgba(11,20,38,.85) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;padding:0 20px;max-width:800px}
.hero-content h1{font-size:2.8rem;font-weight:800;margin-bottom:16px;background:linear-gradient(135deg,#fff,var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-content p{font-size:1.15rem;color:var(--text-muted);margin-bottom:28px;line-height:1.8}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{display:inline-block;padding:12px 32px;background:linear-gradient(135deg,var(--purple),var(--pink));color:#fff;border-radius:var(--radius);font-weight:600;transition:transform .3s,box-shadow .3s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(124,58,237,.4);color:#fff}
.btn-outline{display:inline-block;padding:12px 32px;border:2px solid var(--cyan);color:var(--cyan);border-radius:var(--radius);font-weight:600;transition:all .3s}
.btn-outline:hover{background:var(--cyan);color:var(--bg-dark)}
/* ===== Section Common ===== */
.section{padding:64px 0}
.section-alt{background:var(--bg-section)}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:2rem;font-weight:700;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,var(--purple),var(--cyan));border-radius:2px}
.section-title p{color:var(--text-muted);margin-top:16px;font-size:1rem}
/* ===== Video Grid ===== */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(124,58,237,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s,transform .3s}
.video-card:hover .play-btn{opacity:1;transform:translate(-50%,-50%) scale(1.1)}
.play-btn svg{width:24px;height:24px;fill:#fff;margin-left:3px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.78rem}
.video-stats{position:absolute;bottom:8px;left:8px;display:flex;gap:10px}
.video-stats span{background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:16px}
.video-info h3{font-size:1rem;font-weight:600;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;justify-content:space-between;color:var(--text-muted);font-size:.82rem}
.tag-list{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.tag{padding:3px 10px;background:rgba(124,58,237,.15);color:var(--purple);border-radius:20px;font-size:.78rem}
/* ===== Feature Grid ===== */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 20px;text-align:center;transition:all .3s}
.feature-card:hover{border-color:var(--purple);transform:translateY(-4px)}
.feature-icon{width:56px;height:56px;margin:0 auto 16px;background:linear-gradient(135deg,var(--purple),var(--cyan));border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.6rem}
.feature-card h4{font-size:1.05rem;margin-bottom:8px}
.feature-card p{font-size:.88rem;color:var(--text-muted);line-height:1.6}
/* ===== Expert Grid ===== */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;text-align:center;transition:all .3s}
.expert-card:hover{border-color:var(--cyan);transform:translateY(-4px)}
.expert-card img{width:100%;aspect-ratio:1;object-fit:cover}
.expert-card .expert-info{padding:20px}
.expert-card h4{font-size:1.05rem;margin-bottom:4px}
.expert-card .role{color:var(--purple);font-size:.85rem;margin-bottom:8px}
.expert-card p{font-size:.85rem;color:var(--text-muted);line-height:1.5}
.expert-card .expert-btns{display:flex;gap:8px;justify-content:center;margin-top:12px}
.expert-card .expert-btns a{padding:6px 14px;font-size:.82rem;border-radius:6px}
/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;transition:background .3s}
.faq-q:hover{background:rgba(124,58,237,.1)}
.faq-q::after{content:'+';font-size:1.4rem;color:var(--purple);transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:var(--text-muted);line-height:1.7}
.faq-item.active .faq-a{padding:0 24px 18px;max-height:300px}
/* ===== Reviews ===== */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.review-stars{color:var(--orange);margin-bottom:10px;font-size:1.1rem}
.review-card blockquote{font-size:.95rem;color:var(--text-muted);line-height:1.7;margin-bottom:12px;font-style:italic}
.review-author{font-weight:600;font-size:.9rem}
.review-author span{color:var(--text-muted);font-weight:400;margin-left:8px}
/* ===== Contact Grid ===== */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center}
.contact-card h4{margin-bottom:12px;color:var(--cyan)}
.contact-card p{font-size:.9rem;color:var(--text-muted);line-height:1.6}
.contact-card img{width:160px;height:160px;margin:12px auto 0;border-radius:8px}
/* ===== Partner Wall ===== */
.partner-wall{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;align-items:center}
.partner-wall span{padding:12px 28px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);font-size:.95rem;color:var(--text-muted)}
/* ===== Share Buttons ===== */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.share-btn{padding:10px 22px;border-radius:var(--radius);font-size:.88rem;color:#fff;transition:all .3s;cursor:pointer}
.share-btn:hover{transform:translateY(-2px);color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}
/* ===== AI Section ===== */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:all .3s;position:relative;overflow:hidden}
.ai-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--purple),var(--cyan),var(--orange));opacity:0;transition:opacity .3s}
.ai-card:hover::before{opacity:1}
.ai-card:hover{transform:translateY(-4px)}
.ai-card h4{font-size:1.1rem;margin-bottom:10px;color:var(--cyan)}
.ai-card p{font-size:.9rem;color:var(--text-muted);line-height:1.7}
/* ===== Community Section ===== */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.community-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;transition:all .3s}
.community-card:hover{border-color:var(--orange);transform:translateY(-4px)}
.community-card .comm-icon{font-size:2.2rem;margin-bottom:12px}
.community-card h4{margin-bottom:8px}
.community-card p{font-size:.88rem;color:var(--text-muted)}
/* ===== How-To Guide ===== */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.howto-step{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 20px;text-align:center;position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:28px;height:28px;background:var(--purple);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700}
.howto-step h4{margin-top:8px;margin-bottom:8px;font-size:1rem}
.howto-step p{font-size:.85rem;color:var(--text-muted)}
/* ===== Footer ===== */
.site-footer{background:var(--bg-section);border-top:1px solid var(--border);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand img{height:40px;margin-bottom:12px}
.footer-brand p{font-size:.88rem;color:var(--text-muted);line-height:1.6}
.footer-col h5{font-size:1rem;margin-bottom:14px;color:var(--cyan)}
.footer-col a{display:block;color:var(--text-muted);font-size:.88rem;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--border);color:var(--text-muted);font-size:.82rem}
.footer-bottom a{color:var(--cyan)}
/* ===== Page Hero (Inner Pages) ===== */
.page-hero{padding:120px 0 48px;text-align:center;background:linear-gradient(180deg,rgba(124,58,237,.12),transparent)}
.page-hero h1{font-size:2.2rem;font-weight:700;margin-bottom:12px}
.page-hero .breadcrumb{color:var(--text-muted);font-size:.9rem}
.page-hero .breadcrumb a{color:var(--cyan)}
/* ===== Back to Top ===== */
.back-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;background:var(--purple);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:999;border:none;font-size:1.2rem}
.back-top.visible{opacity:1;visibility:visible}
.back-top:hover{background:var(--cyan);transform:translateY(-3px)}
/* ===== Responsive ===== */
@media(max-width:1024px){
.video-grid,.feature-grid,.expert-grid,.ai-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.howto-steps{grid-template-columns:repeat(2,1fr)}
.contact-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
.main-nav{position:fixed;top:68px;left:0;width:100%;background:rgba(11,20,38,.97);flex-direction:column;padding:16px;gap:4px;transform:translateY(-120%);transition:transform .3s;border-bottom:1px solid var(--border)}
.main-nav.open{transform:translateY(0)}
.nav-toggle{display:flex}
.hero-banner{height:400px}
.hero-content h1{font-size:1.8rem}
.video-grid,.feature-grid,.expert-grid,.ai-grid,.community-grid,.review-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr}
.section{padding:40px 0}
.page-hero{padding:90px 0 32px}
}
@media(max-width:480px){
.hero-banner{height:320px}
.hero-content h1{font-size:1.5rem}
.hero-btns{flex-direction:column;align-items:center}
.section-title h2{font-size:1.5rem}
}