/* ============================================
   小蓝视频 - 原创品牌样式表
   品牌色系：珊瑚粉 #FF6B6B / 暖橙 #FF9F43 / 深紫 #2D1B69
   域名：893231.cn
   ============================================ */

/* === CSS Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#333;background:#fafafa;line-height:1.7;overflow-x:hidden}
a{color:#FF6B6B;text-decoration:none;transition:color .3s}
a:hover{color:#FF9F43}
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:#1a1a2e}

/* === Layout === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:#1a1a2e;position:relative;display:inline-block;padding-bottom:12px}
.section-title h2::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,#FF6B6B,#FF9F43);border-radius:2px}
.section-title p{color:#666;margin-top:10px;font-size:1rem}

/* === Header & Navigation === */
.site-header{background:#fff;box-shadow:0 2px 20px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000;transition:box-shadow .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-wrap .brand-text{font-size:1.4rem;font-weight:800;background:linear-gradient(135deg,#FF6B6B,#FF9F43);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 16px;border-radius:8px;font-size:.95rem;font-weight:500;color:#444;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:linear-gradient(135deg,#FF6B6B,#FF9F43);color:#fff}
.mobile-menu-btn{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:#333}

/* === Search Bar === */
.search-bar{background:linear-gradient(135deg,#FF6B6B 0%,#FF9F43 100%);padding:16px 0}
.search-bar-inner{display:flex;justify-content:center;align-items:center;gap:10px}
.search-bar input{width:100%;max-width:560px;padding:12px 20px;border:none;border-radius:25px;font-size:1rem;outline:none;box-shadow:0 4px 15px rgba(0,0,0,.1)}
.search-bar button{padding:12px 28px;background:#1a1a2e;color:#fff;border:none;border-radius:25px;font-size:1rem;cursor:pointer;font-weight:600;transition:background .3s}
.search-bar button:hover{background:#2D1B69}

/* === Hero Banner === */
.hero{position:relative;overflow:hidden;border-radius:0 0 30px 30px}
.hero-bg{width:100%;height:480px;object-fit:cover;filter:brightness(.85)}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(180deg,rgba(0,0,0,.2) 0%,rgba(0,0,0,.6) 100%);display:flex;align-items:center;justify-content:center;text-align:center;padding:20px}
.hero-content h1{font-size:2.8rem;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.3);margin-bottom:12px}
.hero-content h1 span{color:#FF9F43}
.hero-content p{font-size:1.2rem;color:rgba(255,255,255,.9);max-width:600px;margin:0 auto 20px}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:15px}
.hero-content .hero-tags span{background:rgba(255,255,255,.2);backdrop-filter:blur(10px);padding:6px 16px;border-radius:20px;color:#fff;font-size:.85rem}
.hero-btn{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#FF6B6B,#FF9F43);color:#fff;border-radius:30px;font-size:1.1rem;font-weight:600;margin-top:20px;box-shadow:0 4px 20px rgba(255,107,107,.4);transition:transform .3s,box-shadow .3s}
.hero-btn:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(255,107,107,.5);color:#fff}

/* === Video Cards Grid === */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(0,0,0,.12)}
.video-card .thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-card .thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .thumb img{transform:scale(1.05)}
.video-card .play-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:50px;height:50px;background:rgba(255,107,107,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.video-card:hover .play-icon{opacity:1}
.play-icon::after{content:'';border-style:solid;border-width:8px 0 8px 14px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card .card-info{padding:14px 16px}
.video-card .card-info h3{font-size:.95rem;color:#1a1a2e;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-meta{display:flex;align-items:center;justify-content:space-between;font-size:.8rem;color:#999}
.video-card .card-meta .views::before{content:'▶ '}
.video-card .card-meta .likes::before{content:'♥ '}
.video-card .tag{position:absolute;top:10px;left:10px;background:linear-gradient(135deg,#FF6B6B,#FF9F43);color:#fff;padding:3px 10px;border-radius:12px;font-size:.75rem;font-weight:600}
.video-card .duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}

/* === Category Tabs === */
.cat-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:30px}
.cat-tabs .tab{padding:8px 22px;border-radius:20px;background:#f0f0f0;color:#666;font-size:.9rem;cursor:pointer;transition:all .3s;border:none}
.cat-tabs .tab.active,.cat-tabs .tab:hover{background:linear-gradient(135deg,#FF6B6B,#FF9F43);color:#fff}

/* === Feature Modules === */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border-radius:16px;padding:30px 24px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s}
.feature-card:hover{transform:translateY(-4px)}
.feature-card .icon{width:64px;height:64px;margin:0 auto 16px;background:linear-gradient(135deg,#FF6B6B,#FF9F43);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff}
.feature-card h3{font-size:1.1rem;margin-bottom:8px}
.feature-card p{font-size:.9rem;color:#666}

/* === Expert Section === */
.expert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.expert-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card .expert-photo{width:100%;height:280px;object-fit:cover}
.expert-card .expert-info{padding:20px}
.expert-card .expert-info h3{font-size:1.15rem;margin-bottom:4px}
.expert-card .expert-info .title{color:#FF6B6B;font-size:.85rem;margin-bottom:8px}
.expert-card .expert-info p{font-size:.85rem;color:#666;margin-bottom:12px}
.expert-card .expert-info .awards{font-size:.8rem;color:#FF9F43;margin-bottom:12px}
.expert-btns{display:flex;gap:8px;justify-content:center}
.expert-btns a{padding:6px 16px;border-radius:20px;font-size:.8rem;font-weight:600}
.btn-primary{background:linear-gradient(135deg,#FF6B6B,#FF9F43);color:#fff}
.btn-outline{border:1.5px solid #FF6B6B;color:#FF6B6B}
.btn-outline:hover{background:#FF6B6B;color:#fff}

/* === FAQ Section === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;margin-bottom:12px;box-shadow:0 2px 10px rgba(0,0,0,.04);overflow:hidden}
.faq-item .faq-q{padding:18px 24px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-item .faq-q:hover{background:#fff5f5}
.faq-item .faq-q::after{content:'+';font-size:1.3rem;color:#FF6B6B;transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .3s;color:#666;font-size:.95rem;line-height:1.8}
.faq-item.open .faq-a{padding:0 24px 18px;max-height:500px}

/* === Reviews === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:#fff;border-radius:16px;padding:24px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.review-card .review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-card .avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B6B,#FF9F43);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-card .reviewer-name{font-weight:600;font-size:.95rem}
.review-card .review-date{font-size:.8rem;color:#999}
.review-card .stars{color:#FF9F43;margin-bottom:8px;font-size:.9rem}
.review-card .review-text{font-size:.9rem;color:#555;line-height:1.7}

/* === Partners === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:30px;padding:20px 0}
.partner-wall .partner-item{width:140px;height:60px;background:#f5f5f5;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#999;font-size:.85rem;transition:all .3s}
.partner-wall .partner-item:hover{background:#fff;box-shadow:0 4px 15px rgba(0,0,0,.08);color:#FF6B6B}

/* === Contact Section === */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-card{background:#fff;border-radius:16px;padding:30px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.contact-card h3{font-size:1.2rem;margin-bottom:16px;color:#1a1a2e}
.contact-card .info-item{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;font-size:.9rem;color:#555}
.contact-card .info-item .label{font-weight:600;min-width:80px;color:#333}

/* === Social Share === */
.share-bar{display:flex;justify-content:center;gap:12px;padding:20px 0}
.share-bar a{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1rem;color:#fff;transition:transform .3s}
.share-bar a:hover{transform:scale(1.1);color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#010101}
.share-bilibili{background:#00A1D6}

/* === Footer === */
.site-footer{background:#1a1a2e;color:rgba(255,255,255,.7);padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:linear-gradient(90deg,#FF6B6B,#FF9F43)}
.footer-col p{font-size:.85rem;line-height:1.8;margin-bottom:8px}
.footer-col a{color:rgba(255,255,255,.6);font-size:.85rem;display:block;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:#FF9F43}
.footer-col .qr-wrap{display:flex;gap:16px;margin-top:10px}
.footer-col .qr-wrap img{width:100px;height:100px;border-radius:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:.8rem}
.footer-bottom .update-time{margin-top:6px;color:rgba(255,255,255,.5)}

/* === Breadcrumb === */
.breadcrumb{padding:12px 0;font-size:.85rem;color:#999}
.breadcrumb a{color:#FF6B6B}
.breadcrumb span{margin:0 6px;color:#ccc}

/* === Video Player Page === */
.player-wrap{position:relative;padding-top:56.25%;background:#000;border-radius:16px;overflow:hidden;margin-bottom:24px}
.player-wrap video{position:absolute;top:0;left:0;width:100%;height:100%}
.video-info-panel{background:#fff;border-radius:16px;padding:24px;box-shadow:0 4px 20px rgba(0,0,0,.06);margin-bottom:24px}
.video-info-panel h1{font-size:1.5rem;margin-bottom:10px}
.video-stats{display:flex;gap:20px;color:#999;font-size:.9rem;margin-bottom:16px}
.video-desc{color:#555;font-size:.95rem;line-height:1.8}
.video-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.video-tags span{background:#f5f5f5;padding:4px 14px;border-radius:15px;font-size:.8rem;color:#666}

/* === Sidebar === */
.page-layout{display:grid;grid-template-columns:1fr 340px;gap:30px}
.sidebar .sidebar-card{background:#fff;border-radius:16px;padding:20px;box-shadow:0 4px 20px rgba(0,0,0,.06);margin-bottom:20px}
.sidebar .sidebar-card h3{font-size:1rem;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid #f0f0f0}
.sidebar .rec-item{display:flex;gap:12px;margin-bottom:14px;cursor:pointer}
.sidebar .rec-item img{width:120px;height:68px;object-fit:cover;border-radius:8px;flex-shrink:0}
.sidebar .rec-item .rec-info h4{font-size:.85rem;color:#333;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sidebar .rec-item .rec-info .rec-meta{font-size:.75rem;color:#999;margin-top:4px}

/* === How-To Guide === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.howto-step{text-align:center;padding:24px 16px;background:#fff;border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.howto-step .step-num{width:48px;height:48px;background:linear-gradient(135deg,#FF6B6B,#FF9F43);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.2rem;margin:0 auto 12px}
.howto-step h4{font-size:.95rem;margin-bottom:6px}
.howto-step p{font-size:.85rem;color:#666}

/* === Data Stats Bar === */
.stats-bar{background:linear-gradient(135deg,#1a1a2e,#2D1B69);padding:40px 0;color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item .stat-num{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg,#FF6B6B,#FF9F43);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-item .stat-label{font-size:.9rem;color:rgba(255,255,255,.7);margin-top:4px}

/* === Inner Page Banner === */
.inner-banner{background:linear-gradient(135deg,#FF6B6B 0%,#FF9F43 50%,#2D1B69 100%);padding:50px 0;text-align:center;color:#fff;border-radius:0 0 30px 30px}
.inner-banner h1{font-size:2rem;margin-bottom:8px}
.inner-banner p{font-size:1rem;opacity:.9}

/* === Responsive === */
@media(max-width:1024px){
.video-grid{grid-template-columns:repeat(3,1fr)}
.feature-grid{grid-template-columns:repeat(2,1fr)}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
.page-layout{grid-template-columns:1fr}
.howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.video-grid{grid-template-columns:repeat(2,1fr)}
.header-inner{flex-wrap:wrap}
.main-nav{display:none;flex-direction:column;width:100%;padding:10px 0}
.main-nav.open{display:flex}
.mobile-menu-btn{display:block}
.hero-content h1{font-size:1.8rem}
.hero-bg{height:320px}
.section{padding:40px 0}
.section-title h2{font-size:1.5rem}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.review-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.feature-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr}
.hero-content h1{font-size:1.4rem}
.hero-bg{height:240px}
}

/* === Lazy Load Placeholder === */
img[data-src]{background:#f0f0f0;min-height:100px}

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

/* === Scrollbar === */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#f0f0f0}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#FF6B6B,#FF9F43);border-radius:4px}

/* === MCP Frontend Placeholder === */
.mcp-widget{background:#f9f9f9;border:1px dashed #ddd;border-radius:12px;padding:20px;text-align:center;color:#999;font-size:.85rem;margin:20px 0}

/* === 5-Column Expert Grid === */
.expert-grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.expert-grid-5 .expert-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);text-align:center;transition:transform .3s}
.expert-grid-5 .expert-card:hover{transform:translateY(-4px)}
.expert-grid-5 .expert-photo{width:100%;height:200px;object-fit:cover}
.expert-grid-5 .expert-info{padding:16px 12px}
.expert-grid-5 .expert-info h3{font-size:1rem;margin-bottom:4px}
.expert-grid-5 .expert-info .title{color:#FF6B6B;font-size:.8rem;margin-bottom:6px}
.expert-grid-5 .expert-info p{font-size:.8rem;color:#666;margin-bottom:8px;line-height:1.6}
.expert-grid-5 .expert-info .awards{font-size:.75rem;color:#FF9F43;margin-bottom:6px}
.expert-grid-5 .expert-info .expert-certs{font-size:.72rem;color:#999;border-top:1px solid #f0f0f0;padding-top:8px;margin-top:6px}

/* === Entertainment Section === */
.entertainment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ent-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s}
.ent-card:hover{transform:translateY(-4px)}
.ent-card img{width:100%;height:220px;object-fit:cover;transition:transform .4s}
.ent-card:hover img{transform:scale(1.05)}
.ent-info{padding:18px 16px}
.ent-info .ent-tag{display:inline-block;background:linear-gradient(135deg,#FF6B6B,#FF9F43);color:#fff;padding:3px 12px;border-radius:12px;font-size:.75rem;font-weight:600;margin-bottom:8px}
.ent-info h3{font-size:1rem;margin-bottom:6px;color:#1a1a2e}
.ent-info p{font-size:.85rem;color:#666;line-height:1.6}

/* === AI Section Layout === */
.ai-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.ai-img{border-radius:16px;box-shadow:0 8px 30px rgba(0,0,0,.1)}
.ai-subtitle{font-size:1.4rem;margin-bottom:12px;color:#1a1a2e}
.ai-desc{font-size:.95rem;color:#555;line-height:1.8;margin-bottom:16px}
.ai-features{padding-left:0}
.ai-features li{padding:8px 0 8px 28px;position:relative;font-size:.9rem;color:#555}
.ai-features li::before{content:'✓';position:absolute;left:0;color:#FF6B6B;font-weight:700}

/* === Section White Background === */
.section-white{background:#fff}

/* === Legal Content Pages === */
.legal-content{max-width:800px;margin:0 auto;background:#fff;border-radius:16px;padding:40px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.legal-content h2{font-size:1.3rem;color:#1a1a2e;margin:28px 0 12px;padding-bottom:8px;border-bottom:2px solid #f0f0f0}
.legal-content p{font-size:.95rem;color:#555;line-height:1.8;margin-bottom:10px}
.legal-update{font-size:.85rem;color:#999;margin-bottom:20px;padding:10px 16px;background:#f9f9f9;border-radius:8px}

/* === Footer Links === */
.footer-links{display:flex;gap:16px;margin-top:12px}
.footer-links a{color:rgba(255,255,255,.5);font-size:.8rem}
.footer-links a:hover{color:#FF9F43}

/* === Responsive Additions === */
@media(max-width:1024px){
.expert-grid-5{grid-template-columns:repeat(3,1fr)}
.entertainment-grid{grid-template-columns:repeat(2,1fr)}
.ai-layout{grid-template-columns:1fr}
}
@media(max-width:768px){
.expert-grid-5{grid-template-columns:repeat(2,1fr)}
.entertainment-grid{grid-template-columns:1fr}
.ai-layout{grid-template-columns:1fr}
.legal-content{padding:24px 16px}
}
@media(max-width:480px){
.expert-grid-5{grid-template-columns:1fr}
}