/* ============================================
   糖心vlog - 影视传媒视频社区 原创样式表
   配色：玫瑰金 #D4A574 / 深酒红 #8B2252 / 暗紫 #2D1B3D / 象牙白 #FFF8F0
   ============================================ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --rose:#D4A574;--wine:#8B2252;--dark:#2D1B3D;--ivory:#FFF8F0;
  --text:#3A2D40;--gray:#6E5F73;--light:#F5EDE6;--accent:#C7547A;
  --shadow:0 4px 20px rgba(45,27,61,.12);--radius:12px;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--ivory);line-height:1.75}
a{color:var(--wine);text-decoration:none;transition:color .3s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 导航栏 */
.site-nav{position:fixed;top:0;left:0;width:100%;background:rgba(45,27,61,.95);backdrop-filter:blur(12px);z-index:1000;border-bottom:1px solid rgba(212,165,116,.2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:10px 20px}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:42px;width:auto;border-radius:6px}
.nav-logo span{color:var(--rose);font-size:1.3rem;font-weight:700;letter-spacing:1px}
.nav-links{display:flex;gap:24px;list-style:none}
.nav-links a{color:var(--ivory);font-size:.95rem;padding:6px 0;position:relative;transition:color .3s}
.nav-links a:hover,.nav-links a.active{color:var(--rose)}
.nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--rose);transition:width .3s}
.nav-links a:hover::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.nav-toggle span{width:24px;height:2px;background:var(--ivory);transition:all .3s}

/* 搜索框 */
.search-bar{background:var(--dark);padding:12px 0;border-bottom:1px solid rgba(212,165,116,.15)}
.search-wrap{max-width:600px;margin:0 auto;display:flex;gap:8px;padding:0 20px}
.search-wrap input{flex:1;padding:10px 18px;border:1px solid rgba(212,165,116,.3);border-radius:25px;background:rgba(255,248,240,.08);color:var(--ivory);font-size:.9rem;outline:none;transition:border-color .3s}
.search-wrap input:focus{border-color:var(--rose)}
.search-wrap input::placeholder{color:rgba(255,248,240,.4)}
.search-wrap button{padding:10px 24px;background:linear-gradient(135deg,var(--wine),var(--accent));color:#fff;border:none;border-radius:25px;cursor:pointer;font-size:.9rem;transition:opacity .3s}
.search-wrap button:hover{opacity:.85}

/* Banner */
.hero-banner{position:relative;margin-top:62px;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-banner img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(45,27,61,.75),rgba(139,34,82,.55))}
.hero-content{position:relative;z-index:2;text-align:center;color:#fff;padding:0 20px;max-width:800px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 12px rgba(0,0,0,.4);letter-spacing:2px}
.hero-content h2{font-size:1.3rem;font-weight:400;opacity:.9;margin-bottom:24px;line-height:1.8}
.hero-btn{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,var(--rose),var(--accent));color:#fff;border-radius:30px;font-size:1.05rem;font-weight:600;transition:transform .3s,box-shadow .3s}
.hero-btn:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(199,84,122,.4);color:#fff}

/* 通用板块 */
.section{padding:60px 0}
.section-alt{background:var(--light)}
.section-dark{background:var(--dark);color:var(--ivory)}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:1.9rem;color:var(--dark);margin-bottom:8px;position:relative;display:inline-block}
.section-dark .section-title h2{color:var(--ivory)}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,var(--rose),var(--accent));margin:10px auto 0;border-radius:2px}
.section-title p{color:var(--gray);font-size:1rem}
.section-dark .section-title p{color:rgba(255,248,240,.6)}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(45,27,61,.18)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;cursor:pointer}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(139,34,82,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s,transform .3s}
.video-thumb: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-info{padding:16px}
.video-info h3{font-size:1.05rem;margin-bottom:6px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;color:var(--gray);font-size:.82rem}
.video-meta span{display:flex;align-items:center;gap:4px}

/* 分类标签 */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px}
.tag-item{padding:8px 20px;background:rgba(139,34,82,.08);color:var(--wine);border-radius:20px;font-size:.88rem;cursor:pointer;transition:all .3s;border:1px solid transparent}
.tag-item:hover,.tag-item.active{background:var(--wine);color:#fff;border-color:var(--wine)}

/* 影视传媒模块 */
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.media-card{background:#fff;border-radius:var(--radius);padding:28px 24px;text-align:center;box-shadow:var(--shadow);transition:transform .3s}
.media-card:hover{transform:translateY(-4px)}
.media-icon{width:56px;height:56px;margin:0 auto 16px;background:linear-gradient(135deg,var(--rose),var(--accent));border-radius:14px;display:flex;align-items:center;justify-content:center}
.media-icon svg{width:28px;height:28px;fill:#fff}
.media-card h3{font-size:1.1rem;margin-bottom:8px;color:var(--dark)}
.media-card p{font-size:.88rem;color:var(--gray);line-height:1.7}

/* AI赋能模块 */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:linear-gradient(145deg,var(--dark),#3D2B50);border-radius:var(--radius);padding:32px 24px;color:var(--ivory);position:relative;overflow:hidden}
.ai-card::before{content:'';position:absolute;top:-30px;right:-30px;width:100px;height:100px;background:radial-gradient(circle,rgba(212,165,116,.15),transparent);border-radius:50%}
.ai-card h3{font-size:1.15rem;margin-bottom:10px;color:var(--rose)}
.ai-card p{font-size:.88rem;line-height:1.8;opacity:.8}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius);margin-bottom:12px;box-shadow:0 2px 10px rgba(45,27,61,.06);overflow:hidden}
.faq-q{padding:18px 24px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:1rem;transition:background .3s}
.faq-q:hover{background:rgba(212,165,116,.06)}
.faq-q::after{content:'+';font-size:1.4rem;color:var(--wine);transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s;padding:0 24px}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 18px}
.faq-a p{font-size:.92rem;color:var(--gray);line-height:1.8}

/* 用户评论 */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--rose),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-name{font-weight:600;font-size:.95rem}
.review-date{font-size:.78rem;color:var(--gray)}
.review-stars{color:#F5A623;font-size:.9rem;margin-bottom:8px}
.review-text{font-size:.9rem;color:var(--gray);line-height:1.8}

/* 专家展示 */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:100%;aspect-ratio:1;object-fit:cover}
.expert-info{padding:18px}
.expert-info h3{font-size:1.05rem;margin-bottom:4px}
.expert-info .title{font-size:.82rem;color:var(--accent);margin-bottom:8px}
.expert-info p{font-size:.82rem;color:var(--gray);line-height:1.6}
.expert-btn{display:inline-block;margin-top:10px;padding:6px 18px;border:1px solid var(--wine);color:var(--wine);border-radius:20px;font-size:.82rem;transition:all .3s}
.expert-btn:hover{background:var(--wine);color:#fff}

/* 合作品牌 */
.partner-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.partner-item{padding:16px 28px;background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(45,27,61,.06);font-size:.95rem;color:var(--gray);font-weight:500;transition:transform .3s}
.partner-item:hover{transform:scale(1.05)}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;align-items:start}
.contact-card{background:#fff;border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.contact-card h3{font-size:1.2rem;margin-bottom:16px;color:var(--dark);border-bottom:2px solid var(--rose);padding-bottom:8px;display:inline-block}
.contact-item{display:flex;gap:10px;margin-bottom:12px;font-size:.92rem;color:var(--gray)}
.contact-item strong{color:var(--text);min-width:80px}
.qr-group{display:flex;gap:24px;margin-top:16px}
.qr-box{text-align:center}
.qr-box img{width:140px;height:140px;border-radius:8px;margin-bottom:6px}
.qr-box span{font-size:.82rem;color:var(--gray)}

/* 社交分享 */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.share-btn{padding:10px 22px;border-radius:25px;color:#fff;font-size:.88rem;cursor:pointer;transition:opacity .3s;border:none}
.share-btn:hover{opacity:.8}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bili{background:#00A1D6}

/* 页脚 */
.site-footer{background:var(--dark);color:rgba(255,248,240,.7);padding:40px 0 20px}
.footer-top{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h4{color:var(--rose);font-size:1rem;margin-bottom:14px}
.footer-col a{display:block;color:rgba(255,248,240,.6);font-size:.88rem;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:var(--rose)}
.footer-col p{font-size:.85rem;line-height:1.7;color:rgba(255,248,240,.5)}
.footer-logo{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-logo img{height:36px;border-radius:6px}
.footer-logo span{color:var(--rose);font-weight:700;font-size:1.1rem}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(212,165,116,.15);font-size:.82rem;color:rgba(255,248,240,.4)}

/* 面包屑 */
.breadcrumb{padding:14px 0;font-size:.85rem;color:var(--gray)}
.breadcrumb a{color:var(--wine)}
.breadcrumb span{margin:0 6px;color:var(--gray)}

/* 返回顶部 */
.back-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;background:var(--wine);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transition:opacity .3s,transform .3s;z-index:999;border:none;font-size:1.2rem}
.back-top.show{opacity:1}
.back-top:hover{transform:translateY(-3px);background:var(--accent)}

/* 干扰标签容器 */
.txv-noise{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none}

/* 响应式 */
@media(max-width:1024px){
  .video-grid,.media-grid,.ai-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:62px;left:0;width:100%;background:rgba(45,27,61,.98);flex-direction:column;padding:20px;gap:16px}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
  .hero-banner{height:400px;margin-top:62px}
  .hero-content h1{font-size:1.8rem}
  .hero-content h2{font-size:1rem}
  .video-grid,.media-grid,.ai-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .section{padding:40px 0}
}
@media(max-width:480px){
  .hero-banner{height:320px}
  .hero-content h1{font-size:1.5rem}
  .expert-grid{grid-template-columns:1fr}
  .qr-group{flex-direction:column;align-items:center}
}