/* 青柠视频 - 原创CSS | 阿凡达潘多拉风格 */
/* 配色：深紫#0d0b1e 青蓝#00e5ff 荧光紫#b24bf3 柔粉#ff6ec7 */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;background:#0d0b1e;color:#c8d6e5;line-height:1.75}
a{color:#00e5ff;text-decoration:none;transition:color .3s}
a:hover{color:#ff6ec7}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.top-bar{background:rgba(13,11,30,.92);backdrop-filter:blur(12px);position:sticky;top:0;z-index:100;border-bottom:1px solid rgba(0,229,255,.15)}
.top-bar .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo-link{display:flex;align-items:center;gap:10px}
.logo-link img{height:38px;width:auto}
.main-nav{display:flex;gap:24px;list-style:none;font-size:.95rem}
.main-nav a{color:#a0b4c8;padding:6px 0;position:relative}
.main-nav a:hover,.main-nav a.cur{color:#00e5ff}
.main-nav a.cur::after{content:"";position:absolute;bottom:0;left:0;width:100%;height:2px;background:linear-gradient(90deg,#00e5ff,#b24bf3)}

/* 搜索框 */
.search-wrap{margin:0 auto;max-width:520px;padding:18px 20px 10px}
.search-wrap form{display:flex;border:1px solid rgba(0,229,255,.3);border-radius:28px;overflow:hidden;background:rgba(13,11,30,.7)}
.search-wrap input{flex:1;padding:10px 20px;background:transparent;border:none;color:#e0e8f0;font-size:.95rem;outline:none}
.search-wrap input::placeholder{color:#5a6e82}
.search-wrap button{padding:10px 24px;background:linear-gradient(135deg,#00e5ff,#b24bf3);border:none;color:#fff;font-weight:600;cursor:pointer;font-size:.95rem}

/* Hero区域 */
.hero-section{position:relative;min-height:420px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.55}
.hero-body{position:relative;z-index:2;padding:60px 20px;max-width:1200px;margin:0 auto;text-align:center}
.hero-body h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg,#00e5ff,#b24bf3,#ff6ec7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:14px}
.hero-body h1 em{font-style:normal}
.hero-body p{font-size:1.1rem;color:#a0b4c8;max-width:680px;margin:0 auto 18px}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:12px}
.hero-tags span{background:rgba(0,229,255,.12);border:1px solid rgba(0,229,255,.25);padding:5px 14px;border-radius:20px;font-size:.85rem;color:#00e5ff}

/* 数据概览 */
.stat-row{padding:30px 0;background:rgba(178,75,243,.06);border-top:1px solid rgba(178,75,243,.12);border-bottom:1px solid rgba(178,75,243,.12)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-grid .num{font-size:2rem;font-weight:800;background:linear-gradient(135deg,#00e5ff,#b24bf3);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-grid .lbl{font-size:.85rem;color:#7a8fa3;margin-top:4px}

/* 内容块 */
.block{padding:50px 0}
.block-title{font-size:1.6rem;font-weight:700;color:#e0e8f0;margin-bottom:8px}
.block-title em{font-style:normal;color:#00e5ff}
.block-sub{font-size:.95rem;color:#7a8fa3;margin-bottom:28px}

/* 视频卡片网格 */
.vid-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.vid-card{background:rgba(0,229,255,.04);border:1px solid rgba(0,229,255,.1);border-radius:14px;overflow:hidden;transition:transform .3s,box-shadow .3s}
.vid-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(0,229,255,.15)}
.vid-thumb{position:relative;padding-top:56.25%;background:#0a0820;overflow:hidden}
.vid-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(13,11,30,.5);opacity:0;transition:opacity .3s}
.vid-card:hover .play-btn{opacity:1}
.play-btn::after{content:"";width:52px;height:52px;border-radius:50%;background:rgba(0,229,255,.85);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M8 5v14l11-7z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center;background-size:24px}
.vid-info{padding:14px 16px}
.vid-info h3{font-size:1rem;font-weight:600;color:#e0e8f0;margin-bottom:6px;line-height:1.4}
.vid-info p{font-size:.85rem;color:#7a8fa3;line-height:1.5}
.vid-meta{display:flex;gap:14px;font-size:.8rem;color:#5a6e82;margin-top:8px}

/* 面板卡片 */
.panel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.panel-card{background:rgba(178,75,243,.05);border:1px solid rgba(178,75,243,.12);border-radius:14px;padding:28px;transition:transform .3s}
.panel-card:hover{transform:translateY(-4px)}
.panel-card h4{font-size:1.1rem;font-weight:600;color:#b24bf3;margin-bottom:10px}
.panel-card p{font-size:.9rem;color:#8a9db0}

/* 专家展示 */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.expert-card{background:rgba(0,229,255,.04);border:1px solid rgba(0,229,255,.1);border-radius:14px;padding:24px;text-align:center}
.expert-card .avatar{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,#00e5ff,#b24bf3);margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:#fff;font-weight:700}
.expert-card h4{font-size:1rem;color:#e0e8f0;margin-bottom:4px}
.expert-card .role{font-size:.82rem;color:#b24bf3;margin-bottom:8px}
.expert-card p{font-size:.82rem;color:#7a8fa3;line-height:1.5}
.link-row{display:flex;gap:10px;justify-content:center;margin-top:12px}
.link-row a{font-size:.8rem;padding:5px 12px;border-radius:16px;border:1px solid rgba(0,229,255,.3);color:#00e5ff}
.link-row a:hover{background:rgba(0,229,255,.12)}

/* 合作品牌 */
.collab-wall{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;margin-top:20px}
.collab-item{background:rgba(0,229,255,.06);border:1px solid rgba(0,229,255,.12);border-radius:10px;padding:14px 28px;font-size:.95rem;color:#a0b4c8;font-weight:500}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-box{border:1px solid rgba(178,75,243,.12);border-radius:12px;margin-bottom:14px;overflow:hidden}
.faq-box summary{padding:16px 20px;font-weight:600;color:#e0e8f0;cursor:pointer;background:rgba(178,75,243,.05);list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-box summary::after{content:"+";font-size:1.3rem;color:#b24bf3}
.faq-box[open] summary::after{content:"-"}
.faq-box p{padding:0 20px 16px;font-size:.9rem;color:#8a9db0}

/* 用户评论 */
.review-row{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.review-box{background:rgba(255,110,199,.04);border:1px solid rgba(255,110,199,.12);border-radius:14px;padding:24px}
.review-box blockquote{font-size:.92rem;color:#a0b4c8;line-height:1.6;margin-bottom:12px;font-style:italic}
.review-box .author{font-size:.85rem;color:#ff6ec7;font-weight:600}
.review-box .stars{color:#b24bf3;font-size:.85rem;margin-top:4px}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.contact-card{background:rgba(0,229,255,.04);border:1px solid rgba(0,229,255,.1);border-radius:14px;padding:24px}
.contact-card h4{font-size:1.05rem;color:#00e5ff;margin-bottom:10px}
.contact-card p{font-size:.88rem;color:#8a9db0;margin-bottom:6px}

/* 二维码 */
.qr-row{display:flex;gap:30px;justify-content:center;margin:30px 0}
.qr-box{text-align:center}
.qr-box img{width:110px;height:110px;border-radius:10px;border:1px solid rgba(0,229,255,.15)}
.qr-box span{display:block;font-size:.82rem;color:#7a8fa3;margin-top:6px}

/* 分享 */
.share-row{display:flex;gap:14px;justify-content:center;padding:20px 0}
.share-link{padding:8px 18px;border-radius:20px;font-size:.85rem;border:1px solid rgba(0,229,255,.25);color:#00e5ff;transition:all .3s}
.share-link:hover{background:rgba(0,229,255,.12);color:#fff}

/* 页脚 */
.site-foot{background:rgba(13,11,30,.95);border-top:1px solid rgba(0,229,255,.1);padding:40px 0 0}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.foot-brand img{height:36px;margin-bottom:12px}
.foot-desc{font-size:.85rem;color:#5a6e82;line-height:1.6}
.foot-col h5{font-size:.95rem;color:#e0e8f0;margin-bottom:12px}
.foot-col a{display:block;font-size:.85rem;color:#7a8fa3;margin-bottom:8px}
.foot-col a:hover{color:#00e5ff}
.foot-bottom{border-top:1px solid rgba(0,229,255,.08);padding:18px 0;text-align:center;font-size:.82rem;color:#5a6e82}

/* 面包屑 */
.crumb{padding:14px 0;font-size:.85rem;color:#5a6e82}
.crumb a{color:#00e5ff}
.page-hero{padding:40px 0;text-align:center}
.page-hero h1{font-size:1.8rem;font-weight:700;color:#e0e8f0;margin-bottom:8px}
.page-hero p{color:#7a8fa3;max-width:600px;margin:0 auto}
.intro{font-size:.95rem;color:#8a9db0;line-height:1.8;margin-bottom:30px}

/* 响应式 */
@media(max-width:900px){
.stat-grid{grid-template-columns:repeat(2,1fr)}
.vid-grid{grid-template-columns:repeat(2,1fr)}
.panel-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.contact-grid{grid-template-columns:1fr}
.foot-grid{grid-template-columns:1fr}
.review-row{grid-template-columns:1fr}
}
@media(max-width:600px){
.main-nav{gap:12px;font-size:.82rem}
.hero-body h1{font-size:1.5rem}
.vid-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.stat-grid .num{font-size:1.5rem}
.top-bar .wrap{flex-wrap:wrap;height:auto;padding:10px 20px}
}