/* ===== 星空传媒 - 全站样式表 ===== */
/* 基础重置 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:#333;line-height:1.6;background:#fff}
a{color:#e74c3c;text-decoration:none;transition:color .3s}
a:hover{color:#c0392b}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 头部导航 */
.site-header{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo img{height:50px;width:auto}
.main-nav ul{display:flex;gap:8px}
.main-nav a{padding:8px 16px;border-radius:6px;font-size:15px;color:#333;font-weight:500;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:#e74c3c;color:#fff}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.mobile-menu-btn span{width:25px;height:3px;background:#333;border-radius:2px;transition:.3s}

/* 搜索框 */
.search-bar{background:#f8f9fa;padding:10px 0;border-top:1px solid #eee}
.search-form{display:flex;max-width:600px;margin:0 auto}
.search-form input{flex:1;padding:10px 16px;border:2px solid #e0e0e0;border-right:none;border-radius:8px 0 0 8px;font-size:14px;outline:none;transition:border-color .3s}
.search-form input:focus{border-color:#e74c3c}
.search-form button{padding:10px 24px;background:#e74c3c;color:#fff;border:none;border-radius:0 8px 8px 0;cursor:pointer;font-size:14px;transition:background .3s}
.search-form button:hover{background:#c0392b}

/* 面包屑 */
.breadcrumb{background:#f8f9fa;padding:12px 0;font-size:13px;color:#666;border-bottom:1px solid #eee}
.breadcrumb a{color:#e74c3c}

/* Banner */
.hero-banner{position:relative;overflow:hidden;min-height:500px;display:flex;align-items:center}
.banner-bg{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;z-index:0}
.banner-overlay{position:relative;z-index:1;width:100%;padding:80px 0;background:linear-gradient(135deg,rgba(0,0,0,.7) 0%,rgba(0,0,0,.3) 100%)}
.hero-banner h1{color:#fff;font-size:42px;margin-bottom:12px;text-shadow:2px 2px 4px rgba(0,0,0,.5)}
.hero-banner h2{color:#f0f0f0;font-size:22px;font-weight:400;margin-bottom:20px}
.hero-desc{color:#ddd;font-size:16px;max-width:700px;margin-bottom:30px;line-height:1.8}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}

/* 按钮 */
.btn{display:inline-block;padding:12px 28px;border-radius:8px;font-size:15px;font-weight:500;transition:all .3s;cursor:pointer;text-align:center}
.btn-primary{background:#e74c3c;color:#fff;border:2px solid #e74c3c}
.btn-primary:hover{background:#c0392b;border-color:#c0392b;color:#fff}
.btn-outline{background:transparent;color:#fff;border:2px solid #fff}
.btn-outline:hover{background:#fff;color:#e74c3c}
.btn-sm{padding:8px 18px;font-size:13px}

/* 通用Section */
.section{padding:60px 0}
.section.bg-light{background:#f8f9fa}
.section-title{text-align:center;font-size:28px;color:#222;margin-bottom:12px;position:relative}
.section-title::after{content:'';display:block;width:60px;height:3px;background:#e74c3c;margin:12px auto 0}
.section-desc{text-align:center;color:#666;font-size:15px;max-width:700px;margin:0 auto 40px}
.section-img{width:100%;border-radius:12px;margin-top:40px;box-shadow:0 4px 20px rgba(0,0,0,.1)}
.section-more{text-align:center;margin-top:40px}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,.15)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:4/3}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(231,76,60,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer}
.video-card:hover .play-btn{opacity:1}
.play-icon{color:#fff;font-size:24px;margin-left:4px}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,.8);color:#fff;padding:3px 8px;border-radius:4px;font-size:12px}
.video-tag{position:absolute;top:10px;left:10px;background:#e74c3c;color:#fff;padding:3px 10px;border-radius:4px;font-size:12px;font-weight:500}
.video-info{padding:16px}
.video-info h3{font-size:15px;color:#222;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:12px;color:#999;margin-bottom:8px;flex-wrap:wrap}
.video-desc{font-size:13px;color:#666;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 视频筛选 */
.video-filter{display:flex;gap:10px;margin-bottom:30px;flex-wrap:wrap;justify-content:center}
.filter-btn{padding:8px 20px;border:2px solid #e0e0e0;background:#fff;border-radius:20px;cursor:pointer;font-size:14px;transition:all .3s}
.filter-btn.active,.filter-btn:hover{border-color:#e74c3c;background:#e74c3c;color:#fff}

/* 服务卡片 */
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{background:#fff;padding:30px 24px;border-radius:12px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:transform .3s}
.service-card:hover{transform:translateY(-4px)}
.service-icon{font-size:40px;margin-bottom:16px}
.service-card h3,.service-card h4{font-size:18px;color:#222;margin-bottom:10px}
.service-card p{font-size:14px;color:#666;line-height:1.6}

/* 娱乐专区 */
.ent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ent-card{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);padding:30px;border-radius:12px;color:#fff}
.ent-card h4{font-size:20px;margin-bottom:12px}
.ent-card p{font-size:14px;opacity:.9;line-height:1.6;margin-bottom:12px}
.ent-card .tag{background:rgba(255,255,255,.2);padding:4px 12px;border-radius:12px;font-size:12px}

/* AI模块 */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:#1a1a2e;padding:30px;border-radius:12px;color:#fff;border:1px solid rgba(102,126,234,.3);transition:border-color .3s}
.ai-card:hover{border-color:#667eea}
.ai-card h4{font-size:20px;margin-bottom:12px;color:#667eea}
.ai-card p{font-size:14px;opacity:.85;line-height:1.6}

/* 社区模块 */
.community-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.comm-card{background:#fff;padding:24px;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.06);border-left:4px solid #e74c3c;transition:transform .3s}
.comm-card:hover{transform:translateY(-3px)}
.comm-card h4{font-size:17px;color:#222;margin-bottom:8px}
.comm-card p{font-size:13px;color:#666;line-height:1.5}
.comm-stats{display:flex;gap:16px;margin-top:12px;font-size:12px;color:#999}

/* 专家展示 */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;padding:24px;border-radius:12px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:120px;height:120px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid #e74c3c}
.expert-card h4{font-size:18px;color:#222;margin-bottom:4px}
.expert-title{color:#e74c3c;font-size:14px;margin-bottom:10px}
.expert-desc{font-size:13px;color:#666;line-height:1.5;margin-bottom:12px}
.expert-tags{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin-bottom:16px}
.expert-tags span{background:#f8f9fa;padding:3px 10px;border-radius:12px;font-size:11px;color:#666}
.expert-btns{display:flex;gap:8px;justify-content:center}

/* 合作品牌 */
.partner-logos{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;margin-top:30px}
.partner-item{background:#f8f9fa;padding:20px 30px;border-radius:8px;font-size:16px;color:#666;font-weight:500;border:1px solid #eee;transition:all .3s}
.partner-item:hover{border-color:#e74c3c;color:#e74c3c}

/* How-To步骤 */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:30px}
.step{text-align:center;padding:24px}
.step-num{width:50px;height:50px;background:#e74c3c;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;margin:0 auto 16px}
.step h4{font-size:18px;color:#222;margin-bottom:8px}
.step p{font-size:13px;color:#666;line-height:1.5}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid #eee;border-radius:8px;margin-bottom:12px;overflow:hidden}
.faq-question{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;cursor:pointer;background:#f8f9fa;transition:background .3s}
.faq-question:hover{background:#f0f0f0}
.faq-question h4{font-size:15px;color:#222;flex:1}
.faq-toggle{font-size:24px;color:#e74c3c;font-weight:700;transition:transform .3s}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:all .3s ease}
.faq-answer.open{padding:16px 20px;max-height:500px}
.faq-answer p{font-size:14px;color:#666;line-height:1.7}

/* 用户评论 */
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:#fff;padding:24px;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,.06);border-top:3px solid #e74c3c}
.review-stars{color:#f39c12;font-size:18px;margin-bottom:12px}
.review-text{font-size:14px;color:#555;line-height:1.7;margin-bottom:16px;font-style:italic}
.review-author strong{display:block;font-size:14px;color:#222}
.review-author span{font-size:12px;color:#999}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:2fr 1fr;gap:40px;align-items:start}
.contact-info h4{font-size:22px;color:#222;margin-bottom:16px}
.contact-info p{font-size:14px;color:#555;margin-bottom:10px;line-height:1.6}
.contact-qrcodes{display:flex;gap:24px}
.qrcode-item{text-align:center}
.qrcode-item img{width:150px;height:150px;border-radius:8px;margin-bottom:8px}
.qrcode-item p{font-size:13px;color:#666}

/* 分享按钮 */
.share-section{background:#f8f9fa;padding:30px 0;text-align:center}
.share-section h4{margin-bottom:16px;color:#222}
.share-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.share-btn{padding:10px 24px;border-radius:20px;color:#fff;font-size:14px;transition:opacity .3s}
.share-btn:hover{opacity:.85;color:#fff}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#111}
.share-btn.bilibili{background:#00a1d6}

/* 页脚 */
.site-footer{background:#1a1a2e;color:#ccc;padding:50px 0 0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand img{margin-bottom:12px;filter:brightness(2)}
.footer-brand p{font-size:13px;color:#999}
.footer-links h5,.footer-contact h5{color:#fff;font-size:16px;margin-bottom:16px}
.footer-links ul{display:flex;flex-direction:column;gap:8px}
.footer-links a{color:#999;font-size:13px;transition:color .3s}
.footer-links a:hover{color:#e74c3c}
.footer-contact p{font-size:13px;color:#999;margin-bottom:6px}
.footer-bottom{text-align:center;padding:20px 0;font-size:13px;color:#666}

/* 内页Hero */
.page-hero{background:linear-gradient(135deg,#e74c3c 0%,#c0392b 100%);padding:50px 0;color:#fff}
.page-hero h1{font-size:32px;margin-bottom:12px}
.page-hero p{font-size:16px;opacity:.9;max-width:700px}
.community-hero{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}

/* 内容块 */
.content-block{max-width:800px;margin:20px auto 0}
.content-block p{font-size:15px;color:#555;line-height:1.8;margin-bottom:16px}

/* 响应式 */
@media(max-width:1024px){
    .video-grid,.service-grid,.expert-grid{grid-template-columns:repeat(2,1fr)}
    .ent-grid,.ai-grid,.community-grid,.howto-steps{grid-template-columns:repeat(2,1fr)}
    .reviews-grid{grid-template-columns:repeat(2,1fr)}
    .footer-top{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
    .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;box-shadow:0 4px 10px rgba(0,0,0,.1);padding:20px}
    .main-nav.open{display:block}
    .main-nav ul{flex-direction:column;gap:0}
    .main-nav a{display:block;padding:12px 20px;border-radius:0}
    .mobile-menu-btn{display:flex}
    .hero-banner{min-height:400px}
    .hero-banner h1{font-size:28px}
    .hero-banner h2{font-size:18px}
    .video-grid,.service-grid,.ent-grid,.ai-grid,.community-grid,.expert-grid,.howto-steps,.reviews-grid{grid-template-columns:1fr}
    .section-title{font-size:22px}
    .page-hero h1{font-size:24px}
    .contact-qrcodes{flex-direction:column;align-items:center}
    .partner-logos{gap:10px}
    .partner-item{padding:12px 20px;font-size:14px}
}
@media(max-width:480px){
    .hero-banner h1{font-size:22px}
    .hero-btns{flex-direction:column}
    .btn{width:100%;text-align:center}
    .header-inner{height:60px}
    .logo img{height:40px}
}