/*
   糖心vlog V2 - 华语音乐视频创作社区
   原创样式表 - 梦幻紫+薄荷青配色
*/
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#6C5CE7;--primary-light:#A29BFE;--secondary:#00CEC9;--accent:#FD79A8;
  --dark:#1A1A2E;--dark2:#16213E;--light:#F8F9FE;--gray:#636E72;--text:#2D3436;
  --radius:12px;--shadow:0 4px 20px rgba(108,92,231,0.12);
  --gradient:linear-gradient(135deg,#6C5CE7,#00CEC9);
  --gradient2:linear-gradient(135deg,#FD79A8,#6C5CE7);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;color:var(--text);background:var(--light);line-height:1.7}
a{color:var(--primary);text-decoration:none;transition:all .3s}
a:hover{color:var(--secondary)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1240px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.site-header{background:var(--dark);position:sticky;top:0;z-index:1000;box-shadow:0 2px 15px rgba(0,0,0,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo-area{display:flex;align-items:center;gap:10px}
.logo-area img{height:42px;width:auto;border-radius:6px}
.logo-area .brand-name{color:#fff;font-size:1.3rem;font-weight:700;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{color:rgba(255,255,255,.8);padding:8px 14px;border-radius:8px;font-size:.9rem;transition:all .3s}
.main-nav a:hover,.main-nav a.active{color:#fff;background:var(--primary)}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* 搜索框 */
.search-bar{background:var(--dark2);padding:14px 0;border-bottom:1px solid rgba(108,92,231,.2)}
.search-wrap{max-width:600px;margin:0 auto;position:relative}
.search-wrap input{width:100%;padding:12px 50px 12px 20px;border:2px solid var(--primary-light);border-radius:30px;background:rgba(255,255,255,.06);color:#fff;font-size:.95rem;outline:none;transition:border .3s}
.search-wrap input::placeholder{color:rgba(255,255,255,.4)}
.search-wrap input:focus{border-color:var(--secondary)}
.search-wrap button{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:var(--gradient);border:none;color:#fff;width:38px;height:38px;border-radius:50%;cursor:pointer;font-size:1rem}

/* Hero区域 */
.hero-section{position:relative;overflow:hidden;height:520px}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s}
.hero-slide.active{opacity:1}
.hero-slide img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to right,rgba(26,26,46,.85) 0%,rgba(26,26,46,.4) 60%,transparent 100%);display:flex;align-items:center}
.hero-content{padding:0 60px;max-width:600px}
.hero-content h1{color:#fff;font-size:2.6rem;margin-bottom:16px;line-height:1.3}
.hero-content h1 span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-content p{color:rgba(255,255,255,.75);font-size:1.05rem;margin-bottom:28px;line-height:1.8}
.hero-btns{display:flex;gap:14px}
.btn-primary{background:var(--gradient);color:#fff;padding:12px 32px;border-radius:30px;font-weight:600;border:none;cursor:pointer;font-size:.95rem;transition:transform .3s,box-shadow .3s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(108,92,231,.4);color:#fff}
.btn-outline{border:2px solid var(--secondary);color:var(--secondary);padding:10px 30px;border-radius:30px;font-weight:600;transition:all .3s}
.btn-outline:hover{background:var(--secondary);color:#fff}

/* 面包屑 */
.breadcrumb{padding:12px 0;font-size:.85rem;color:var(--gray)}
.breadcrumb a{color:var(--primary)}
.breadcrumb span{margin:0 6px;color:#ccc}

/* 通用区块 */
.section{padding:60px 0}
.section-dark{background:var(--dark);color:#fff}
.section-alt{background:linear-gradient(180deg,#F0EDFF 0%,var(--light) 100%)}
.section-header{text-align:center;margin-bottom:45px}
.section-header h2{font-size:2rem;margin-bottom:10px;position:relative;display:inline-block}
.section-header h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:var(--gradient);border-radius:3px}
.section-dark .section-header h2{color:#fff}
.section-header p{color:var(--gray);font-size:1rem;margin-top:16px}
.section-dark .section-header p{color:rgba(255,255,255,.6)}

/* 视频卡片 - 瀑布流3列 */
.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;position:relative}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(108,92,231,.2)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.video-thumb video{width:100%;height:100%;object-fit:cover;display:none}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(108,92,231,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s,transform .3s;cursor:pointer}
.play-btn::after{content:'';border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.video-card:hover .play-btn{opacity:1;transform:translate(-50%,-50%) scale(1.1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.78rem;font-weight:600}
.video-info{padding:16px}
.video-info h3{font-size:1rem;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info h3 a{color:var(--text)}
.video-info h3 a:hover{color:var(--primary)}
.video-desc{font-size:.85rem;color:var(--gray);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:14px;font-size:.8rem;color:var(--gray);margin-bottom:10px}
.video-tags{display:flex;flex-wrap:wrap;gap:6px}
.video-tags span{background:linear-gradient(135deg,rgba(108,92,231,.1),rgba(0,206,201,.1));color:var(--primary);padding:3px 10px;border-radius:15px;font-size:.75rem}

/* 影视传媒服务 */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:#fff;border-radius:var(--radius);padding:32px 24px;text-align:center;box-shadow:var(--shadow);transition:transform .3s;border-top:3px solid transparent}
.service-card:hover{transform:translateY(-4px);border-top-color:var(--primary)}
.service-icon{width:64px;height:64px;margin:0 auto 18px;background:var(--gradient);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff}
.service-card h3{font-size:1.1rem;margin-bottom:10px}
.service-card p{font-size:.88rem;color:var(--gray);line-height:1.6}

/* 社区功能 - 六宫格 */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.community-card{background:rgba(255,255,255,.06);border:1px solid rgba(108,92,231,.2);border-radius:var(--radius);padding:28px 22px;text-align:center;transition:all .3s}
.community-card:hover{background:rgba(108,92,231,.1);border-color:var(--primary);transform:translateY(-4px)}
.community-card .icon{font-size:2.2rem;margin-bottom:14px}
.community-card h3{color:#fff;font-size:1.05rem;margin-bottom:8px}
.community-card p{color:rgba(255,255,255,.6);font-size:.85rem;line-height:1.6}

/* AI赋能 */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s}
.ai-card:hover{transform:translateY(-4px)}
.ai-card-img{height:180px;overflow:hidden}
.ai-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.ai-card:hover .ai-card-img img{transform:scale(1.05)}
.ai-card-body{padding:20px}
.ai-card-body h3{font-size:1.05rem;margin-bottom:8px}
.ai-card-body p{font-size:.85rem;color:var(--gray);line-height:1.6}

/* 专家展示 - 轮播卡片 */
.expert-carousel{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;padding:10px 0;scrollbar-width:none}
.expert-carousel::-webkit-scrollbar{display:none}
.expert-card{min-width:280px;background:#fff;border-radius:var(--radius);padding:28px 22px;text-align:center;box-shadow:var(--shadow);scroll-snap-align:start;flex-shrink:0;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:3px solid var(--primary-light)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h3{font-size:1.05rem;margin-bottom:4px}
.expert-card .title{color:var(--primary);font-size:.85rem;margin-bottom:8px}
.expert-card .credential{background:linear-gradient(135deg,rgba(108,92,231,.1),rgba(0,206,201,.1));padding:4px 12px;border-radius:15px;font-size:.75rem;color:var(--primary);display:inline-block;margin-bottom:10px}
.expert-card p{font-size:.85rem;color:var(--gray);line-height:1.6;margin-bottom:14px}
.expert-card .expert-btns{display:flex;gap:8px;justify-content:center}
.expert-card .expert-btns a{padding:6px 16px;border-radius:20px;font-size:.8rem}

/* 合作品牌墙 */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall img{height:60px;width:auto;opacity:.6;transition:opacity .3s;filter:grayscale(30%)}
.partner-wall img:hover{opacity:1;filter:none}

/* How-To指南 */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.howto-step{background:#fff;border-radius:var(--radius);padding:28px 20px;text-align:center;box-shadow:var(--shadow);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:32px;height:32px;background:var(--gradient);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}
.howto-step h4{margin:12px 0 8px;font-size:1rem}
.howto-step p{font-size:.85rem;color:var(--gray)}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;max-width:1000px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.faq-question{padding:18px 22px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem;transition:background .3s}
.faq-question:hover{background:rgba(108,92,231,.04)}
.faq-question .arrow{transition:transform .3s;color:var(--primary);font-size:1.2rem}
.faq-item.open .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 22px}
.faq-item.open .faq-answer{max-height:300px;padding:0 22px 18px}
.faq-answer p{font-size:.88rem;color:var(--gray);line-height:1.7}

/* 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);position:relative}
.review-card::before{content:'\201C';position:absolute;top:10px;left:18px;font-size:3rem;color:var(--primary-light);opacity:.3;font-family:serif}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:var(--gradient);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-stars{color:#FFD700;font-size:.85rem;margin-top:2px}
.review-text{font-size:.88rem;color:var(--gray);line-height:1.7;padding-left:4px}

/* 新闻资讯 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .3s}
.news-card:hover{transform:translateY(-4px)}
.news-card .date{color:var(--primary);font-size:.8rem;margin-bottom:8px}
.news-card h3{font-size:1rem;margin-bottom:10px;line-height:1.4}
.news-card p{font-size:.85rem;color:var(--gray);line-height:1.6}
.article-meta{font-size:.8rem;color:var(--gray);margin-top:10px}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info h3{font-size:1.2rem;margin-bottom:16px}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px}
.contact-item .icon{width:40px;height:40px;background:var(--gradient);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}
.contact-item .text{font-size:.9rem;line-height:1.6}
.contact-item .text strong{display:block;margin-bottom:2px}
.qrcode-area{display:flex;gap:30px;justify-content:center}
.qrcode-item{text-align:center}
.qrcode-item img{width:140px;height:140px;border-radius:10px;margin-bottom:8px}
.qrcode-item p{font-size:.85rem;color:var(--gray)}

/* 分享按钮 */
.share-bar{display:flex;gap:10px;justify-content:center;padding:20px 0}
.share-btn{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.85rem;cursor:pointer;transition:transform .3s}
.share-btn:hover{transform:scale(1.15)}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* 页脚 */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand .logo-area{margin-bottom:14px}
.footer-brand p{font-size:.85rem;line-height:1.7;color:rgba(255,255,255,.5)}
.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:var(--gradient)}
.footer-col a{display:block;color:rgba(255,255,255,.5);font-size:.85rem;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:var(--secondary)}
.footer-bottom{text-align:center;padding:20px 0;font-size:.82rem;color:rgba(255,255,255,.4)}

/* 内页通用 */
.page-hero{background:var(--dark);padding:50px 0 40px;text-align:center}
.page-hero h1{color:#fff;font-size:2rem;margin-bottom:10px}
.page-hero p{color:rgba(255,255,255,.6);font-size:1rem}
.page-content{padding:50px 0}
.page-content h2{font-size:1.6rem;margin-bottom:20px;color:var(--text)}
.page-content p{font-size:.95rem;color:var(--gray);line-height:1.8;margin-bottom:16px}

/* 时间线 */
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:2px;background:var(--gradient)}
.timeline-item{position:relative;margin-bottom:30px}
.timeline-item::before{content:'';position:absolute;left:-32px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--primary);border:3px solid var(--light)}
.timeline-item h4{font-size:1rem;margin-bottom:4px}
.timeline-item p{font-size:.88rem;color:var(--gray)}

/* 响应式 */
@media(max-width:1024px){
  .video-grid,.service-grid,.ai-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--dark);flex-direction:column;padding:16px;gap:4px}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 16px;width:100%}
  .hero-section{height:380px}
  .hero-content{padding:0 24px}
  .hero-content h1{font-size:1.8rem}
  .video-grid,.service-grid,.ai-grid,.community-grid,.faq-grid,.review-grid,.news-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:40px 0}
  .expert-card{min-width:260px}
}
@media(max-width:480px){
  .hero-section{height:300px}
  .hero-content h1{font-size:1.4rem}
  .hero-btns{flex-direction:column;gap:10px}
  .section-header h2{font-size:1.5rem}
  .qrcode-area{flex-direction:column;align-items:center}
}