/* ============================================
   糖心vlog 影视传媒视频社区 - 原创样式表
   配色：玫瑰粉#E11D48 金橙#F97316 深紫黑#1E1033
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:#1E1033;color:#F0E6FF;line-height:1.7;overflow-x:hidden}
a{color:#E11D48;text-decoration:none;transition:color .3s}
a:hover{color:#F97316}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 头部导航 === */
.site-header{background:rgba(30,16,51,.97);position:sticky;top:0;z-index:1000;border-bottom:1px solid rgba(225,29,72,.25);backdrop-filter:blur(14px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.logo-link{display:flex;align-items:center;gap:8px}
.logo-link img{height:48px;width:auto}
.main-nav{display:flex;gap:4px;align-items:center}
.main-nav a{padding:8px 14px;border-radius:6px;font-size:.9rem;color:#C4B5D0;font-weight:500;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:rgba(225,29,72,.12);color:#E11D48}
.mobile-menu-btn{display:none;background:none;border:none;color:#F0E6FF;font-size:1.5rem;cursor:pointer;padding:6px}

/* === 搜索框 === */
.search-wrapper{display:flex;align-items:center;margin-left:12px}
.search-wrapper form{display:flex;background:#2A1845;border:1px solid rgba(225,29,72,.25);border-radius:20px;overflow:hidden;transition:border-color .3s}
.search-wrapper form:focus-within{border-color:#E11D48}
.search-wrapper input{background:transparent;border:none;color:#F0E6FF;padding:6px 14px;font-size:.85rem;width:160px;outline:none}
.search-wrapper input::placeholder{color:#7C6B8E}
.search-wrapper button{background:#E11D48;border:none;color:#fff;padding:6px 14px;cursor:pointer;font-size:.85rem;transition:background .3s}
.search-wrapper button:hover{background:#BE123C}

/* === Banner 横幅 === */
.hero-banner{position:relative;min-height:540px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#1E1033}
.hero-banner .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.5);z-index:1}
.hero-banner .hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(225,29,72,.3),rgba(30,16,51,.75));z-index:2}
.hero-content{position:relative;z-index:3;text-align:center;padding:40px 20px;max-width:820px}
.hero-content h1{font-size:2.8rem;font-weight:800;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.5)}
.hero-content h1 span{color:#F97316}
.hero-content p{font-size:1.15rem;color:#C4B5D0;margin-bottom:28px;line-height:1.8}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{display:inline-block;background:linear-gradient(135deg,#E11D48,#BE123C);color:#fff;padding:12px 32px;border-radius:8px;font-weight:600;font-size:1rem;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(225,29,72,.4);color:#fff}
.btn-secondary{display:inline-block;background:transparent;color:#F97316;padding:12px 32px;border-radius:8px;font-weight:600;font-size:1rem;border:2px solid #F97316;transition:all .3s;cursor:pointer}
.btn-secondary:hover{background:#F97316;color:#1E1033;transform:translateY(-2px)}

/* === 通用区块 === */
.section{padding:60px 0}
.section-dark{background:#1E1033}
.section-alt{background:#2A1845}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;font-weight:700;margin-bottom:10px}
.section-title h2 span{color:#F97316}
.section-title p{color:#9B8AAE;font-size:1rem;max-width:620px;margin:0 auto}
.section-tag{display:inline-block;background:rgba(225,29,72,.12);color:#E11D48;padding:4px 14px;border-radius:20px;font-size:.8rem;font-weight:600;margin-bottom:12px;letter-spacing:1px}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:#2A1845;border-radius:12px;overflow:hidden;transition:all .35s;border:1px solid rgba(225,29,72,.08);cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(225,29,72,.18);border-color:rgba(225,29,72,.25)}
.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 .5s}
.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(225,29,72,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .35s;z-index:2}
.play-btn::after{content:"";border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card:hover .play-btn{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem;z-index:2}
.video-hot{position:absolute;top:8px;left:8px;background:#F97316;color:#fff;padding:2px 10px;border-radius:4px;font-size:.75rem;font-weight:600;z-index:2}
.video-info{padding:16px}
.video-info h3{font-size:1rem;font-weight:600;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}
.video-meta{display:flex;gap:12px;color:#7C6B8E;font-size:.8rem;flex-wrap:wrap}
.video-meta span{display:flex;align-items:center;gap:4px}

/* === 短视频 TikTok风格 === */
.shorts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.short-card{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:3/4;cursor:pointer;transition:transform .35s}
.short-card:hover{transform:scale(1.03)}
.short-card img{width:100%;height:100%;object-fit:cover}
.short-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.7) 0%,transparent 50%);display:flex;flex-direction:column;justify-content:flex-end;padding:16px}
.short-overlay h4{font-size:.95rem;font-weight:600;margin-bottom:6px}
.short-overlay .short-stats{display:flex;gap:12px;font-size:.8rem;color:#C4B5D0}
.short-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:48px;height:48px;background:rgba(249,115,22,.8);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.short-play::after{content:"";border-style:solid;border-width:8px 0 8px 14px;border-color:transparent transparent transparent #fff;margin-left:2px}
.short-card:hover .short-play{opacity:1}

/* === 服务卡片 === */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:linear-gradient(145deg,#2A1845,#1E1033);border:1px solid rgba(225,29,72,.12);border-radius:12px;padding:28px;text-align:center;transition:all .35s}
.service-card:hover{border-color:#E11D48;transform:translateY(-4px);box-shadow:0 8px 30px rgba(225,29,72,.12)}
.service-icon{font-size:2.5rem;margin-bottom:14px}
.service-card h3{font-size:1.1rem;font-weight:600;margin-bottom:8px;color:#F0E6FF}
.service-card p{color:#9B8AAE;font-size:.9rem;line-height:1.6}

/* === AI赋能 === */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:linear-gradient(145deg,rgba(225,29,72,.06),rgba(249,115,22,.04));border:1px solid rgba(225,29,72,.18);border-radius:14px;padding:32px;transition:all .35s;position:relative;overflow:hidden}
.ai-card::before{content:"";position:absolute;top:-50%;right:-50%;width:100%;height:100%;background:radial-gradient(circle,rgba(225,29,72,.08),transparent);transition:all .5s}
.ai-card:hover::before{top:-30%;right:-30%}
.ai-card:hover{border-color:#F97316;transform:translateY(-4px)}
.ai-card h3{font-size:1.15rem;font-weight:600;margin-bottom:10px;color:#E11D48}
.ai-card p{color:#9B8AAE;font-size:.9rem;line-height:1.7}

/* === 社区 === */
.community-section{position:relative;overflow:hidden}
.community-section .bg-img{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.25);z-index:0}
.community-section .container{position:relative;z-index:1}
.community-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:30px}
.stat-item{text-align:center;padding:24px;background:rgba(42,24,69,.7);border-radius:12px;border:1px solid rgba(225,29,72,.15);backdrop-filter:blur(8px)}
.stat-item .stat-num{font-size:2.2rem;font-weight:800;color:#F97316;display:block}
.stat-item .stat-label{color:#9B8AAE;font-size:.9rem;margin-top:4px}
.community-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:20px}
.community-tags span{background:rgba(225,29,72,.1);color:#E11D48;padding:6px 18px;border-radius:20px;font-size:.85rem;cursor:pointer;transition:all .3s;border:1px solid transparent}
.community-tags span:hover{background:#E11D48;color:#fff;border-color:#E11D48}

/* === 专家团队 === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#2A1845;border-radius:14px;overflow:hidden;text-align:center;transition:all .35s;border:1px solid rgba(225,29,72,.08)}
.expert-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(225,29,72,.12);border-color:rgba(225,29,72,.25)}
.expert-card img{width:100%;aspect-ratio:1;object-fit:cover}
.expert-info{padding:20px}
.expert-info h3{font-size:1.05rem;font-weight:600;margin-bottom:4px}
.expert-info .expert-role{color:#E11D48;font-size:.85rem;margin-bottom:8px}
.expert-info p{color:#9B8AAE;font-size:.8rem;line-height:1.6;margin-bottom:12px}
.expert-btns{display:flex;gap:8px;justify-content:center}
.expert-btns a{padding:6px 14px;border-radius:6px;font-size:.8rem;border:1px solid #E11D48;color:#E11D48;transition:all .3s}
.expert-btns a:hover{background:#E11D48;color:#fff}

/* === 品牌合作 === */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;margin-bottom:40px}
.brand-wall .brand-item{background:#2A1845;border:1px solid rgba(225,29,72,.12);border-radius:10px;padding:16px 28px;font-size:.95rem;font-weight:600;color:#9B8AAE;transition:all .3s}
.brand-wall .brand-item:hover{border-color:#F97316;color:#F97316}

/* === How-To 指南 === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.howto-step{text-align:center;padding:24px;background:rgba(225,29,72,.05);border-radius:12px;border:1px solid rgba(225,29,72,.12)}
.howto-step .step-num{display:inline-flex;width:40px;height:40px;background:#E11D48;color:#fff;border-radius:50%;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;margin-bottom:12px}
.howto-step h4{font-size:.95rem;font-weight:600;margin-bottom:6px}
.howto-step p{color:#9B8AAE;font-size:.85rem}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#2A1845;border:1px solid rgba(225,29,72,.08);border-radius:10px;margin-bottom:12px;overflow:hidden;transition:border-color .3s}
.faq-item:hover,.faq-item.active{border-color:rgba(225,29,72,.25)}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem;transition:color .3s}
.faq-q:hover{color:#E11D48}
.faq-q::after{content:"+";font-size:1.3rem;color:#E11D48;transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;padding:0 24px;color:#9B8AAE;font-size:.9rem;line-height:1.7}
.faq-item.active .faq-a{max-height:300px;padding:0 24px 18px}

/* === 用户评价 === */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:#2A1845;border-radius:12px;padding:24px;border:1px solid rgba(225,29,72,.08);transition:all .3s}
.review-card:hover{border-color:rgba(249,115,22,.25)}
.review-stars{color:#F97316;font-size:1rem;margin-bottom:10px;letter-spacing:2px}
.review-text{color:#C4B5D0;font-size:.9rem;line-height:1.7;margin-bottom:14px;font-style:italic}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:36px;height:36px;border-radius:50%;background:#E11D48;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.85rem}
.review-name{font-weight:600;font-size:.85rem}
.review-date{color:#7C6B8E;font-size:.75rem}

/* === 社交分享 === */
.share-section{text-align:center;padding:30px 0}
.share-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:16px}
.share-btns a{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:8px;font-size:.85rem;font-weight:500;color:#fff;transition:all .3s}
.share-btns a:hover{transform:translateY(-2px);color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* === 页脚 === */
.site-footer{background:#150D24;padding:50px 0 0;border-top:1px solid rgba(225,29,72,.15)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:40px}
.footer-col h4{font-size:1rem;font-weight:600;margin-bottom:16px;color:#F0E6FF}
.footer-col p{color:#7C6B8E;font-size:.85rem;line-height:1.8;margin-bottom:8px}
.footer-col a{display:block;color:#7C6B8E;font-size:.85rem;padding:3px 0;transition:color .3s}
.footer-col a:hover{color:#E11D48}
.footer-qr{display:flex;gap:16px;margin-top:12px}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:100px;height:100px;border-radius:6px;border:1px solid rgba(225,29,72,.15)}
.footer-qr .qr-item span{display:block;font-size:.75rem;color:#7C6B8E;margin-top:6px}
.footer-bottom{border-top:1px solid rgba(225,29,72,.08);padding:20px 0;text-align:center}
.footer-bottom p{color:#5A4D6B;font-size:.8rem;line-height:1.8}
.footer-bottom a{color:#E11D48}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#7C6B8E}
.breadcrumb a{color:#E11D48}
.breadcrumb span{margin:0 8px;color:#5A4D6B}

/* === 内页通用 === */
.page-banner{position:relative;min-height:280px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.page-banner .banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.35)}
.page-banner .banner-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(225,29,72,.25),rgba(30,16,51,.65))}
.page-banner .banner-content{position:relative;z-index:1;text-align:center;padding:20px}
.page-banner h1{font-size:2.2rem;font-weight:700;margin-bottom:8px}
.page-content{padding:40px 0}
.page-content p{color:#C4B5D0;font-size:.95rem;line-height:1.9;margin-bottom:16px}
.page-content h2{font-size:1.6rem;font-weight:700;margin:30px 0 14px;color:#F0E6FF}
.page-content h3{font-size:1.25rem;font-weight:600;margin:24px 0 10px;color:#E11D48}

/* === 联系页面 === */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-item{background:#2A1845;border-radius:12px;padding:28px;border:1px solid rgba(225,29,72,.08)}
.contact-item .icon{font-size:2rem;margin-bottom:12px}
.contact-item strong{display:block;font-size:1rem;margin-bottom:6px}
.contact-item p{color:#9B8AAE;font-size:.9rem}

/* === 响应式 === */
@media(max-width:1024px){
  .video-grid,.service-grid,.ai-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid,.shorts-grid,.community-stats,.howto-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;flex-direction:column;width:100%;padding:10px 0;gap:2px}
  .main-nav.active{display:flex}
  .main-nav a{padding:10px 14px}
  .mobile-menu-btn{display:block}
  .search-wrapper{width:100%;margin:8px 0 0;order:3}
  .search-wrapper form{width:100%}
  .search-wrapper input{width:100%}
  .hero-content h1{font-size:1.8rem}
  .hero-banner{min-height:400px}
  .video-grid,.service-grid,.ai-grid,.review-grid{grid-template-columns:1fr}
  .expert-grid,.shorts-grid{grid-template-columns:repeat(2,1fr)}
  .community-stats,.howto-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .section{padding:40px 0}
  .section-title h2{font-size:1.5rem}
}
@media(max-width:480px){
  .expert-grid,.shorts-grid{grid-template-columns:1fr}
  .community-stats,.howto-steps{grid-template-columns:1fr}
  .hero-content h1{font-size:1.5rem}
}

/* === 懒加载 === */
img[loading="lazy"]{opacity:0;transition:opacity .5s}
img[loading="lazy"].loaded,img[loading="lazy"][src]{opacity:1}

/* === 动画 === */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeInUp .6s ease forwards}