/* ============================================
   糖心vlog 全站样式表
   品牌色系：糖心粉 #FF6B9D | 深玫红 #C44569 | 金色 #F8B500
   背景色系：深夜蓝黑 #0D0D1A | 卡片 #1A1A2E
   ============================================ */

/* === 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","Hiragino Sans GB",Arial,sans-serif;background:#0D0D1A;color:#EAEAEA;line-height:1.8;overflow-x:hidden}
a{color:#FF6B9D;text-decoration:none;transition:color .3s}
a:hover{color:#F8B500}
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}

/* === 容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section-padding{padding:60px 0}

/* === 头部导航 === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,13,26,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,107,157,.15);transition:all .3s}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{height:42px;width:auto}
.site-logo span{font-size:1.3rem;font-weight:800;background:linear-gradient(135deg,#FF6B9D,#F8B500);-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 14px;border-radius:8px;font-size:.9rem;color:#EAEAEA;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#FF6B9D;transition:all .3s}

/* === 搜索框 === */
.search-bar{background:linear-gradient(135deg,rgba(255,107,157,.08),rgba(248,181,0,.08));padding:14px 0;border-bottom:1px solid rgba(255,107,157,.1)}
.search-bar .container{display:flex;justify-content:center}
.search-form{display:flex;max-width:600px;width:100%;position:relative}
.search-form input{flex:1;padding:12px 20px;border:2px solid rgba(255,107,157,.3);border-radius:25px 0 0 25px;background:rgba(26,26,46,.8);color:#EAEAEA;font-size:.95rem;outline:none;transition:border-color .3s}
.search-form input:focus{border-color:#FF6B9D}
.search-form input::placeholder{color:#A0A0B8}
.search-form button{padding:12px 28px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;transition:all .3s;white-space:nowrap}
.search-form button:hover{background:linear-gradient(135deg,#C44569,#FF6B9D)}

/* === Hero Banner === */
.hero-section{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden;margin-top:70px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.6)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,13,26,.3) 0%,rgba(13,13,26,.85) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;width:100%;padding:60px 20px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(255,107,157,.4)}
.hero-content h1 em{font-style:normal;background:linear-gradient(135deg,#FF6B9D,#F8B500);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content p{font-size:1.15rem;color:#ccc;max-width:700px;margin:0 auto 30px}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:20px}
.hero-tags span{padding:6px 16px;border-radius:20px;font-size:.85rem;background:rgba(255,107,157,.15);border:1px solid rgba(255,107,157,.3);color:#FF6B9D}
.btn-primary{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;border-radius:30px;font-size:1rem;font-weight:600;transition:all .3s;box-shadow:0 4px 20px rgba(255,107,157,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(255,107,157,.5);color:#fff}
.btn-secondary{display:inline-block;padding:12px 30px;border:2px solid #FF6B9D;color:#FF6B9D;border-radius:30px;font-size:.95rem;font-weight:600;transition:all .3s}
.btn-secondary:hover{background:#FF6B9D;color:#fff}

/* === 区块标题 === */
.section-title{text-align:center;margin-bottom:45px}
.section-title h2{font-size:2rem;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,#FF6B9D,#F8B500);border-radius:3px}
.section-title p{color:#A0A0B8;margin-top:16px;font-size:1rem}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{background:#1A1A2E;border-radius:14px;overflow:hidden;transition:all .4s;border:1px solid rgba(255,107,157,.08);cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(255,107,157,.2);border-color:rgba(255,107,157,.3)}
.video-card .thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:50px;height:50px;background:rgba(255,107,157,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .3s}
.video-card .play-icon::after{content:'';border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.video-card:hover .play-icon{background:#FF6B9D;transform:translate(-50%,-50%) scale(1.15)}
.video-card .duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-card .card-body{padding:14px 16px}
.video-card .card-body h3{font-size:.95rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.video-card .card-meta{display:flex;justify-content:space-between;align-items:center;color:#A0A0B8;font-size:.8rem}
.video-card .card-meta .views{display:flex;align-items:center;gap:4px}
.video-card .card-meta .likes{color:#FF6B9D}

/* === 服务模块 === */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.service-item{background:linear-gradient(145deg,#1A1A2E,#151528);border-radius:16px;padding:35px 28px;text-align:center;border:1px solid rgba(255,107,157,.08);transition:all .4s}
.service-item:hover{border-color:rgba(255,107,157,.3);transform:translateY(-4px);box-shadow:0 8px 30px rgba(255,107,157,.15)}
.service-item .icon{width:64px;height:64px;margin:0 auto 20px;background:linear-gradient(135deg,rgba(255,107,157,.15),rgba(248,181,0,.15));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.service-item h3{font-size:1.1rem;margin-bottom:10px}
.service-item p{color:#A0A0B8;font-size:.9rem;line-height:1.7}

/* === 专家卡片 === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#1A1A2E;border-radius:16px;overflow:hidden;text-align:center;border:1px solid rgba(255,107,157,.08);transition:all .4s}
.expert-card:hover{border-color:rgba(248,181,0,.3);transform:translateY(-4px)}
.expert-card .avatar{width:100%;aspect-ratio:3/4;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:20px 16px}
.expert-card .info h3{font-size:1.05rem;margin-bottom:4px}
.expert-card .info .role{color:#FF6B9D;font-size:.85rem;margin-bottom:10px}
.expert-card .info p{color:#A0A0B8;font-size:.85rem;line-height:1.6;margin-bottom:14px}
.expert-card .info .btns{display:flex;gap:8px;justify-content:center}
.expert-card .info .btns a{padding:6px 16px;border-radius:20px;font-size:.8rem;border:1px solid #FF6B9D;color:#FF6B9D;transition:all .3s}
.expert-card .info .btns a:hover{background:#FF6B9D;color:#fff}

/* === 合作品牌墙 === */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.brand-wall .brand-item{width:140px;height:70px;background:rgba(26,26,46,.8);border-radius:12px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,107,157,.1);transition:all .3s;padding:10px;color:#A0A0B8;font-size:.85rem;font-weight:600}
.brand-wall .brand-item:hover{border-color:#FF6B9D;background:rgba(255,107,157,.08)}

/* === 用户评价 === */
.reviews-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#1A1A2E;border-radius:14px;padding:28px;border:1px solid rgba(255,107,157,.08);transition:all .3s}
.review-card:hover{border-color:rgba(255,107,157,.2)}
.review-card .stars{color:#F8B500;font-size:1rem;margin-bottom:12px;letter-spacing:2px}
.review-card .text{color:#ccc;font-size:.95rem;line-height:1.8;margin-bottom:16px;font-style:italic}
.review-card .user{display:flex;align-items:center;gap:12px}
.review-card .user .avatar-sm{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#FF6B9D,#F8B500);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem}
.review-card .user .name{font-weight:600;font-size:.9rem}
.review-card .user .date{color:#A0A0B8;font-size:.8rem}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#1A1A2E;border-radius:12px;margin-bottom:12px;border:1px solid rgba(255,107,157,.08);overflow:hidden}
.faq-item .faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:all .3s}
.faq-item .faq-q:hover{color:#FF6B9D}
.faq-item .faq-q .arrow{transition:transform .3s;color:#FF6B9D;font-size:1.2rem}
.faq-item.active .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:#A0A0B8;font-size:.95rem;line-height:1.8}
.faq-item.active .faq-a{padding:0 24px 18px;max-height:500px}

/* === 联系信息 === */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-card{background:#1A1A2E;border-radius:14px;padding:30px;border:1px solid rgba(255,107,157,.08)}
.contact-card h3{font-size:1.1rem;margin-bottom:16px;color:#FF6B9D}
.contact-card .info-row{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px;color:#ccc;font-size:.95rem}
.contact-card .info-row .label{color:#A0A0B8;min-width:80px}

/* === 社区功能 === */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.community-item{background:linear-gradient(145deg,#1A1A2E,#151528);border-radius:14px;padding:30px 24px;text-align:center;border:1px solid rgba(255,107,157,.08);transition:all .4s}
.community-item:hover{border-color:rgba(248,181,0,.3);transform:translateY(-4px)}
.community-item .icon{font-size:2.2rem;margin-bottom:14px}
.community-item h3{font-size:1rem;margin-bottom:8px}
.community-item p{color:#A0A0B8;font-size:.88rem}

/* === 页脚 === */
.site-footer{background:#0A0A16;border-top:1px solid rgba(255,107,157,.1);padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:40px}
.footer-col h4{font-size:1rem;margin-bottom:16px;color:#FF6B9D}
.footer-col p,.footer-col a{color:#A0A0B8;font-size:.9rem;line-height:2}
.footer-col a:hover{color:#FF6B9D}
.footer-col .qr-codes{display:flex;gap:16px;margin-top:10px}
.footer-col .qr-codes img{width:100px;height:100px;border-radius:8px;border:1px solid rgba(255,107,157,.15)}
.footer-col .qr-codes .qr-label{text-align:center;font-size:.75rem;color:#A0A0B8;margin-top:4px}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(255,107,157,.08);color:#A0A0B8;font-size:.85rem}
.footer-bottom .update-time{margin-top:6px;font-size:.8rem}

/* === 社交分享 === */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-bar a{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:.85rem;border:1px solid rgba(255,107,157,.2);color:#EAEAEA;transition:all .3s}
.share-bar a:hover{background:rgba(255,107,157,.15);border-color:#FF6B9D;color:#FF6B9D}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#A0A0B8}
.breadcrumb a{color:#FF6B9D}
.breadcrumb span{margin:0 8px;color:#555}

/* === 内页通用 === */
.page-banner{position:relative;height:300px;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:70px}
.page-banner .bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.4)}
.page-banner .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,13,26,.2),rgba(13,13,26,.9))}
.page-banner .content{position:relative;z-index:2;text-align:center}
.page-banner h1{font-size:2.2rem;margin-bottom:8px}
.page-banner p{color:#A0A0B8;font-size:1rem}

/* === 视频播放页 === */
.video-player-wrap{background:#000;border-radius:14px;overflow:hidden;margin-bottom:30px;position:relative;padding-top:56.25%}
.video-player-wrap video,.video-player-wrap iframe{position:absolute;inset:0;width:100%;height:100%}
.video-info{background:#1A1A2E;border-radius:14px;padding:30px;margin-bottom:24px}
.video-info h1{font-size:1.5rem;margin-bottom:12px}
.video-info .meta{display:flex;gap:24px;color:#A0A0B8;font-size:.9rem;margin-bottom:16px;flex-wrap:wrap}
.video-info .meta span{display:flex;align-items:center;gap:6px}
.video-info .description{color:#ccc;line-height:1.8;font-size:.95rem}
.video-info .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.video-info .tags span{padding:4px 14px;border-radius:16px;font-size:.8rem;background:rgba(255,107,157,.1);color:#FF6B9D;border:1px solid rgba(255,107,157,.2)}

/* === 侧边栏推荐 === */
.sidebar .rec-card{display:flex;gap:12px;margin-bottom:16px;background:#1A1A2E;border-radius:10px;overflow:hidden;transition:all .3s;border:1px solid rgba(255,107,157,.05)}
.sidebar .rec-card:hover{border-color:rgba(255,107,157,.2)}
.sidebar .rec-card .rec-thumb{width:140px;min-height:80px;flex-shrink:0;overflow:hidden}
.sidebar .rec-card .rec-thumb img{width:100%;height:100%;object-fit:cover}
.sidebar .rec-card .rec-info{padding:10px 12px 10px 0;display:flex;flex-direction:column;justify-content:center}
.sidebar .rec-card .rec-info h4{font-size:.85rem;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.sidebar .rec-card .rec-info .rec-meta{color:#A0A0B8;font-size:.75rem}

/* === How-To指南 === */
.howto-steps{max-width:800px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:30px;align-items:flex-start}
.howto-step .step-num{width:48px;height:48px;flex-shrink:0;background:linear-gradient(135deg,#FF6B9D,#C44569);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;color:#fff}
.howto-step .step-content h3{font-size:1.05rem;margin-bottom:6px}
.howto-step .step-content p{color:#A0A0B8;font-size:.95rem}

/* === 响应式 === */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-nav{position:fixed;top:70px;left:0;width:100%;background:rgba(13,13,26,.98);flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .4s;border-bottom:1px solid rgba(255,107,157,.15)}
  .main-nav.active{transform:translateY(0)}
  .main-nav a{padding:12px 16px;width:100%;text-align:center}
  .nav-toggle{display:flex}
  .hero-content h1{font-size:1.8rem}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .services-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .community-grid{grid-template-columns:1fr}
  .reviews-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section-title h2{font-size:1.5rem}
  .section-padding{padding:40px 0}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .hero-content h1{font-size:1.5rem}
}

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

/* === 懒加载占位 === */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}

/* === 视频标签高亮 === */
.video-badge{display:inline-block;padding:3px 10px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;border-radius:4px;font-size:.75rem;font-weight:600;margin-right:6px;vertical-align:middle}

/* === 内页两栏布局 === */
.content-layout{display:grid;grid-template-columns:1fr 340px;gap:30px}
@media(max-width:768px){.content-layout{grid-template-columns:1fr}}