/* ============================================
   糖心vlog - 原创样式表
   品牌色系：糖心粉红 #FF2D55 / 深邃夜空 #1A1A2E
   ============================================ */

/* --- 全局重置与基础 --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;background:#0D0D1A;color:#E0E0F0;line-height:1.7;overflow-x:hidden}
a{color:#FF6B9D;text-decoration:none;transition:color .3s}
a:hover{color:#FF2D55}
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:#fff}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:2rem;margin-bottom:12px;background:linear-gradient(135deg,#FF2D55,#C850C0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-title p{color:#9090B8;font-size:1.05rem}
section{padding:80px 0}
.btn-primary{display:inline-block;padding:12px 32px;background:linear-gradient(135deg,#FF2D55,#C850C0);color:#fff;border-radius:30px;font-size:.95rem;font-weight:600;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,45,85,.4);color:#fff}
.btn-outline{display:inline-block;padding:10px 28px;border:2px solid #FF2D55;color:#FF2D55;border-radius:30px;font-size:.9rem;font-weight:600;transition:all .3s}
.btn-outline:hover{background:#FF2D55;color:#fff}

/* --- 顶部导航 --- */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,13,26,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,45,85,.15);transition:all .3s}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{width:40px;height:40px}
.logo-wrap .brand-name{font-size:1.25rem;font-weight:800;background:linear-gradient(135deg,#FF2D55,#FF6B9D);-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;font-size:.9rem;color:#B0B0C8;border-radius:20px;transition:all .3s}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(255,45,85,.15)}
.search-box{position:relative;margin-left:16px}
.search-box input{width:180px;padding:8px 36px 8px 14px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:20px;color:#fff;font-size:.85rem;outline:none;transition:all .3s}
.search-box input:focus{border-color:#FF2D55;width:220px;background:rgba(255,255,255,.12)}
.search-box input::placeholder{color:#7070A0}
.search-box .search-icon{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:#9090B8;font-size:.85rem;pointer-events:none}
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.mobile-toggle span{display:block;width:24px;height:2px;background:#fff;border-radius:2px;transition:all .3s}

/* --- Hero轮播区 --- */
.hero-section{margin-top:68px;position:relative;height:520px;overflow:hidden}
.hero-slider{position:relative;width:100%;height:100%}
.hero-slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;transition:opacity 1s ease}
.hero-slide.active{opacity:1}
.hero-slide img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(180deg,rgba(13,13,26,.3) 0%,rgba(13,13,26,.85) 100%);display:flex;align-items:center;justify-content:center;text-align:center;padding:0 20px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.5)}
.hero-content h1 .highlight{background:linear-gradient(135deg,#FF2D55,#FF6B9D);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content p{font-size:1.15rem;color:#C0C0D8;margin-bottom:28px;max-width:600px;margin-left:auto;margin-right:auto}
.hero-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:10}
.hero-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.3);cursor:pointer;transition:all .3s}
.hero-dots span.active{background:#FF2D55;transform:scale(1.3)}

/* --- 视频卡片网格 --- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{position:relative;border-radius:12px;overflow:hidden;background:#1E1E3A;transition:all .4s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(255,45,85,.2)}
.video-card .thumb{position:relative;aspect-ratio:3/4;overflow:hidden}
.video-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(255,45,85,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .4s}
.video-card:hover .play-btn{opacity:1}
.video-card .play-btn::after{content:"";display:block;width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card .card-info{padding:14px 16px}
.video-card .card-info h3{font-size:.95rem;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.video-card .card-info .meta{display:flex;justify-content:space-between;color:#8080A8;font-size:.8rem}
.video-card .card-info .meta .views::before{content:"▶ "}
.video-card .card-info .meta .likes::before{content:"♥ "}
.video-card .duration{position:absolute;bottom:60px;right:10px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-card .tag{position:absolute;top:10px;left:10px;background:linear-gradient(135deg,#FF2D55,#C850C0);color:#fff;padding:3px 10px;border-radius:12px;font-size:.72rem;font-weight:600}

/* --- 分类模块 --- */
.category-tabs{display:flex;justify-content:center;gap:12px;margin-bottom:40px;flex-wrap:wrap}
.category-tabs .tab{padding:8px 24px;border-radius:20px;background:rgba(255,255,255,.06);color:#9090B8;font-size:.9rem;cursor:pointer;transition:all .3s;border:1px solid transparent}
.category-tabs .tab:hover,.category-tabs .tab.active{color:#fff;background:rgba(255,45,85,.15);border-color:rgba(255,45,85,.3)}

/* --- 影视传媒模块 --- */
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.media-card{background:#1E1E3A;border-radius:14px;padding:30px 24px;text-align:center;transition:all .4s;border:1px solid rgba(255,255,255,.06)}
.media-card:hover{transform:translateY(-5px);border-color:rgba(255,45,85,.3);box-shadow:0 10px 30px rgba(255,45,85,.12)}
.media-card .icon{width:64px;height:64px;margin:0 auto 18px;background:linear-gradient(135deg,#FF2D55,#C850C0);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.media-card h3{font-size:1.1rem;margin-bottom:10px}
.media-card p{color:#8888B0;font-size:.88rem;line-height:1.6}

/* --- AI赋能模块 --- */
.ai-section{background:linear-gradient(180deg,rgba(200,80,192,.06) 0%,transparent 100%)}
.ai-features{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.ai-card{background:rgba(30,30,58,.8);border-radius:16px;padding:32px 24px;border:1px solid rgba(200,80,192,.15);transition:all .4s;position:relative;overflow:hidden}
.ai-card::before{content:"";position:absolute;top:-50%;right:-50%;width:100%;height:100%;background:radial-gradient(circle,rgba(255,45,85,.08) 0%,transparent 70%);transition:all .5s}
.ai-card:hover::before{top:-30%;right:-30%}
.ai-card:hover{border-color:rgba(255,45,85,.4);transform:translateY(-4px)}
.ai-card h3{font-size:1.1rem;margin-bottom:12px;position:relative}
.ai-card p{color:#8888B0;font-size:.88rem;line-height:1.6;position:relative}
.ai-card .ai-tag{display:inline-block;padding:4px 12px;background:linear-gradient(135deg,#FF2D55,#C850C0);border-radius:12px;font-size:.72rem;color:#fff;margin-bottom:14px;position:relative}

/* --- 社区功能模块 --- */
.community-section{background:linear-gradient(180deg,transparent,rgba(255,45,85,.04),transparent)}
.community-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.community-card{display:flex;gap:20px;background:#1E1E3A;border-radius:14px;padding:24px;border:1px solid rgba(255,255,255,.06);transition:all .3s}
.community-card:hover{border-color:rgba(255,45,85,.25)}
.community-card .comm-icon{flex-shrink:0;width:52px;height:52px;background:linear-gradient(135deg,#FF2D55,#C850C0);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem}
.community-card h3{font-size:1rem;margin-bottom:6px}
.community-card p{color:#8888B0;font-size:.85rem}

/* --- 专家展示 --- */
.experts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#1E1E3A;border-radius:14px;overflow:hidden;text-align:center;transition:all .4s;border:1px solid rgba(255,255,255,.06)}
.expert-card:hover{transform:translateY(-5px);border-color:rgba(255,45,85,.3)}
.expert-card .avatar{width:100%;aspect-ratio:1;overflow:hidden}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.expert-card:hover .avatar img{transform:scale(1.05)}
.expert-card .info{padding:18px 16px}
.expert-card .info h3{font-size:1rem;margin-bottom:4px}
.expert-card .info .role{color:#FF6B9D;font-size:.82rem;margin-bottom:8px}
.expert-card .info p{color:#8888B0;font-size:.8rem;line-height:1.5;margin-bottom:12px}
.expert-card .info .expert-btns{display:flex;gap:8px;justify-content:center}
.expert-card .info .expert-btns a{padding:6px 14px;font-size:.78rem;border-radius:16px}

/* --- 品牌Logo墙 --- */
.brand-wall{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:30px;padding:40px 0}
.brand-item{width:140px;height:80px;background:rgba(255,255,255,.04);border-radius:12px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.08);transition:all .3s;color:#6060A0;font-size:.85rem;font-weight:600}
.brand-item:hover{border-color:rgba(255,45,85,.3);background:rgba(255,45,85,.06)}

/* --- 用户评价 --- */
.reviews-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#1E1E3A;border-radius:14px;padding:28px 24px;border:1px solid rgba(255,255,255,.06);transition:all .3s}
.review-card:hover{border-color:rgba(255,45,85,.2)}
.review-card .stars{color:#FFD700;font-size:.9rem;margin-bottom:10px;letter-spacing:2px}
.review-card .review-text{color:#C0C0D8;font-size:.9rem;line-height:1.7;margin-bottom:14px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:12px}
.review-card .reviewer .avatar-sm{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#FF2D55,#C850C0);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem}
.review-card .reviewer .name{font-size:.88rem;font-weight:600}
.review-card .reviewer .date{font-size:.78rem;color:#7070A0}

/* --- FAQ --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#1E1E3A;border-radius:12px;margin-bottom:14px;border:1px solid rgba(255,255,255,.06);overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:rgba(255,45,85,.2)}
.faq-item .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-item .faq-q:hover{color:#FF6B9D}
.faq-item .faq-q .arrow{transition:transform .3s;color:#FF2D55}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:#9090B8;font-size:.9rem;line-height:1.7}
.faq-item.open .faq-a{padding:0 24px 18px;max-height:500px}

/* --- 联系我们 --- */
.contact-section{background:linear-gradient(180deg,rgba(255,45,85,.04),transparent)}
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;align-items:start}
.contact-info{background:#1E1E3A;border-radius:14px;padding:32px 28px;border:1px solid rgba(255,255,255,.06)}
.contact-info h3{font-size:1.2rem;margin-bottom:20px}
.contact-info .info-item{display:flex;gap:14px;margin-bottom:18px;align-items:flex-start}
.contact-info .info-item .icon-circle{flex-shrink:0;width:40px;height:40px;background:rgba(255,45,85,.12);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#FF2D55;font-size:1rem}
.contact-info .info-item .text .label{font-size:.82rem;color:#7070A0;margin-bottom:2px}
.contact-info .info-item .text .value{font-size:.92rem;color:#D0D0E8}
.contact-qr{display:flex;gap:24px;justify-content:center}
.contact-qr .qr-item{text-align:center}
.contact-qr .qr-item img{width:160px;height:160px;border-radius:12px;margin-bottom:8px}
.contact-qr .qr-item p{font-size:.82rem;color:#9090B8}

/* --- 社交分享 --- */
.share-bar{display:flex;justify-content:center;gap:16px;padding:30px 0}
.share-btn{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.06);color:#B0B0C8;font-size:1.1rem;transition:all .3s;border:1px solid rgba(255,255,255,.08);cursor:pointer}
.share-btn:hover{background:rgba(255,45,85,.2);color:#FF2D55;border-color:rgba(255,45,85,.3)}

/* --- 页脚 --- */
.site-footer{background:#0A0A18;border-top:1px solid rgba(255,45,85,.1);padding:50px 0 0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-col h4{font-size:1rem;margin-bottom:16px;color:#fff}
.footer-col p{color:#7070A0;font-size:.85rem;line-height:1.7}
.footer-col a{display:block;color:#8888B0;font-size:.85rem;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:#FF6B9D}
.footer-col .footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-col .footer-logo img{width:36px;height:36px}
.footer-col .footer-logo span{font-size:1.1rem;font-weight:700;background:linear-gradient(135deg,#FF2D55,#FF6B9D);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding:20px 0;text-align:center;color:#5050A0;font-size:.82rem}
.footer-bottom a{color:#FF6B9D}
.footer-update{color:#6060A0;font-size:.8rem;margin-top:6px}

/* --- 面包屑 --- */
.breadcrumb{padding:20px 0;font-size:.85rem;color:#7070A0}
.breadcrumb a{color:#9090B8}
.breadcrumb a:hover{color:#FF6B9D}
.breadcrumb span{margin:0 8px;color:#5050A0}

/* --- 内页通用 --- */
.page-hero{margin-top:68px;padding:60px 0;background:linear-gradient(135deg,rgba(255,45,85,.08),rgba(200,80,192,.06));text-align:center}
.page-hero h1{font-size:2.2rem;margin-bottom:12px}
.page-hero p{color:#9090B8;font-size:1.05rem}
.page-content{padding:60px 0}
.content-block{background:#1E1E3A;border-radius:14px;padding:32px 28px;margin-bottom:28px;border:1px solid rgba(255,255,255,.06)}
.content-block h2{font-size:1.4rem;margin-bottom:16px;color:#FF6B9D}
.content-block h3{font-size:1.15rem;margin-bottom:12px}
.content-block p{color:#B0B0C8;font-size:.92rem;line-height:1.8;margin-bottom:14px}

/* --- How-To指南 --- */
.howto-steps{counter-reset:step}
.howto-step{display:flex;gap:20px;margin-bottom:24px;align-items:flex-start}
.howto-step::before{counter-increment:step;content:counter(step);flex-shrink:0;width:44px;height:44px;background:linear-gradient(135deg,#FF2D55,#C850C0);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.howto-step .step-content h4{font-size:1rem;margin-bottom:6px}
.howto-step .step-content p{color:#8888B0;font-size:.88rem}

/* --- 响应式 --- */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .experts-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:repeat(2,1fr)}
  .media-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .site-header .container{flex-wrap:wrap}
  .main-nav{display:none;width:100%;flex-direction:column;padding:10px 0;gap:0}
  .main-nav.show{display:flex}
  .main-nav a{padding:12px 16px;border-radius:0;border-bottom:1px solid rgba(255,255,255,.04)}
  .mobile-toggle{display:flex}
  .search-box{width:100%;margin:10px 0 0;order:3}
  .search-box input{width:100%}
  .hero-section{height:380px}
  .hero-content h1{font-size:1.8rem}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .media-grid{grid-template-columns:1fr}
  .ai-features{grid-template-columns:1fr}
  .community-grid{grid-template-columns:1fr}
  .experts-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  section{padding:50px 0}
  .section-title h2{font-size:1.6rem}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .experts-grid{grid-template-columns:1fr}
  .brand-wall{gap:16px}
  .brand-item{width:110px;height:60px;font-size:.75rem}
  .contact-qr{flex-direction:column;align-items:center}
}

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

/* --- 动画 --- */
.fade-in{opacity:0;transform:translateY(20px);transition:all .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* --- 文章资讯模块 --- */
.articles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.article-card{background:#1E1E3A;border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.06);transition:all .4s}
.article-card:hover{transform:translateY(-5px);border-color:rgba(255,45,85,.3);box-shadow:0 10px 30px rgba(255,45,85,.12)}
.article-card .article-img{aspect-ratio:16/9;overflow:hidden}
.article-card .article-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.article-card:hover .article-img img{transform:scale(1.06)}
.article-card .article-body{padding:20px}
.article-card .article-tag{display:inline-block;padding:3px 10px;background:linear-gradient(135deg,#FF2D55,#C850C0);border-radius:12px;font-size:.72rem;color:#fff;font-weight:600;margin-bottom:10px}
.article-card .article-body h3{font-size:1rem;margin-bottom:10px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-card .article-body p{color:#8888B0;font-size:.85rem;line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px}
.article-card .article-meta{display:flex;justify-content:space-between;color:#6060A0;font-size:.78rem}
@media(max-width:768px){.articles-grid{grid-template-columns:1fr}}
@media(max-width:1024px){.articles-grid{grid-template-columns:repeat(2,1fr)}}