/* ============================================
   糖心vlog 全站样式表
   品牌色系：糖心粉 #FF6B9D | 梦幻紫 #C44DFF | 深夜紫 #1A0B2E
   ============================================ */

/* === 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;color:#2D1B4E;background:#FAF5FF;line-height:1.7;overflow-x:hidden}
a{color:#C44DFF;text-decoration:none;transition:color .3s}
a:hover{color:#FF6B9D}
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:#1A0B2E}

/* === 容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;background:linear-gradient(135deg,#FF6B9D,#C44DFF);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block;margin-bottom:10px}
.section-title p{color:#6B5B8D;font-size:1.05rem;max-width:600px;margin:0 auto}

/* === 顶部导航 === */
.top-header{background:linear-gradient(135deg,#1A0B2E 0%,#2D1854 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 20px rgba(26,11,46,.3)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:0 20px;max-width:1200px;margin:0 auto;height:68px}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:42px;width:auto}
.nav-logo span{color:#fff;font-size:1.3rem;font-weight:700;letter-spacing:1px}
.nav-menu{display:flex;gap:6px;align-items:center}
.nav-menu a{color:rgba(255,255,255,.85);padding:8px 16px;border-radius:8px;font-size:.95rem;transition:all .3s}
.nav-menu a:hover,.nav-menu a.active{background:linear-gradient(135deg,#FF6B9D,#C44DFF);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:all .3s}

/* === 搜索框 === */
.search-bar{background:linear-gradient(135deg,#2D1854,#1A0B2E);padding:12px 0;border-bottom:1px solid rgba(196,77,255,.2)}
.search-wrap{max-width:600px;margin:0 auto;display:flex;gap:8px;padding:0 20px}
.search-wrap input{flex:1;padding:10px 18px;border:2px solid rgba(196,77,255,.3);border-radius:25px;background:rgba(255,255,255,.08);color:#fff;font-size:.95rem;outline:none;transition:border-color .3s}
.search-wrap input::placeholder{color:rgba(255,255,255,.4)}
.search-wrap input:focus{border-color:#FF6B9D}
.search-wrap button{padding:10px 24px;background:linear-gradient(135deg,#FF6B9D,#C44DFF);color:#fff;border:none;border-radius:25px;cursor:pointer;font-size:.95rem;transition:transform .2s}
.search-wrap button:hover{transform:scale(1.05)}

/* === Hero Banner === */
.hero{position:relative;height:520px;overflow:hidden;background:#1A0B2E}
.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(26,11,46,.3) 0%,rgba(26,11,46,.85) 100%)}
.hero-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:0 20px}
.hero-content h1{font-size:2.8rem;color:#fff;margin-bottom:16px;text-shadow:0 2px 20px rgba(196,77,255,.5)}
.hero-content h1 em{font-style:normal;color:#FF6B9D}
.hero-content p{color:rgba(255,255,255,.85);font-size:1.15rem;max-width:650px;margin-bottom:28px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.btn-primary{display:inline-block;padding:12px 32px;background:linear-gradient(135deg,#FF6B9D,#C44DFF);color:#fff;border-radius:30px;font-size:1rem;font-weight:600;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,107,157,.4);color:#fff}
.btn-outline{display:inline-block;padding:12px 32px;border:2px solid rgba(255,255,255,.5);color:#fff;border-radius:30px;font-size:1rem;font-weight:600;transition:all .3s}
.btn-outline:hover{border-color:#FF6B9D;color:#FF6B9D}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{position:relative;border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 4px 20px rgba(26,11,46,.08);transition:all .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(196,77,255,.15)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1A0B2E}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.video-play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;background:rgba(26,11,46,.4)}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn i{width:56px;height:56px;background:linear-gradient(135deg,#FF6B9D,#C44DFF);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(255,107,157,.5)}
.video-play-btn i::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:4px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:.8rem}
.video-info{padding:14px 16px}
.video-info h3{font-size:1rem;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.video-meta{display:flex;gap:12px;color:#8B7BAA;font-size:.85rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:2px 10px;background:linear-gradient(135deg,rgba(255,107,157,.1),rgba(196,77,255,.1));color:#C44DFF;border-radius:12px;font-size:.75rem;margin-top:8px}

/* === 模块卡片 === */
.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.module-card{background:#fff;border-radius:16px;padding:30px 24px;text-align:center;box-shadow:0 4px 20px rgba(26,11,46,.06);transition:all .3s;border:1px solid rgba(196,77,255,.08)}
.module-card:hover{transform:translateY(-4px);box-shadow:0 12px 35px rgba(196,77,255,.12);border-color:rgba(196,77,255,.2)}
.module-icon{width:64px;height:64px;margin:0 auto 16px;background:linear-gradient(135deg,#FF6B9D,#C44DFF);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff}
.module-card h3{font-size:1.15rem;margin-bottom:8px}
.module-card p{color:#6B5B8D;font-size:.92rem;line-height:1.6}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:28px}
.expert-card{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 4px 20px rgba(26,11,46,.06);transition:all .3s;text-align:center}
.expert-card:hover{transform:translateY(-4px);box-shadow:0 12px 35px rgba(196,77,255,.12)}
.expert-avatar{width:120px;height:120px;border-radius:50%;margin:24px auto 16px;overflow:hidden;border:3px solid #C44DFF;padding:3px}
.expert-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}
.expert-card h3{font-size:1.1rem;margin-bottom:4px}
.expert-card .expert-title{color:#C44DFF;font-size:.9rem;margin-bottom:10px}
.expert-card p{color:#6B5B8D;font-size:.88rem;padding:0 20px;margin-bottom:16px;line-height:1.6}
.expert-links{display:flex;gap:10px;justify-content:center;padding-bottom:20px}
.expert-links a{padding:6px 16px;border-radius:20px;font-size:.85rem;transition:all .3s}
.expert-links .btn-sm-primary{background:linear-gradient(135deg,#FF6B9D,#C44DFF);color:#fff}
.expert-links .btn-sm-outline{border:1px solid #C44DFF;color:#C44DFF}
.expert-links .btn-sm-outline:hover{background:#C44DFF;color:#fff}

/* === 品牌Logo墙 === */
.brand-wall{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;align-items:center}
.brand-wall .brand-item{width:140px;height:70px;background:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 12px rgba(26,11,46,.06);padding:12px;transition:all .3s;border:1px solid rgba(196,77,255,.08)}
.brand-wall .brand-item:hover{box-shadow:0 6px 20px rgba(196,77,255,.15);border-color:rgba(196,77,255,.2)}
.brand-wall .brand-item span{font-size:.85rem;font-weight:600;color:#6B5B8D;text-align:center}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;margin-bottom:12px;overflow:hidden;box-shadow:0 2px 12px rgba(26,11,46,.04);border:1px solid rgba(196,77,255,.08)}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:background .3s}
.faq-question:hover{background:rgba(196,77,255,.04)}
.faq-question::after{content:"+";font-size:1.4rem;color:#C44DFF;transition:transform .3s;font-weight:300}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 18px}
.faq-answer p{color:#6B5B8D;font-size:.95rem;line-height:1.7}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:#fff;border-radius:14px;padding:24px;box-shadow:0 4px 20px rgba(26,11,46,.06);border:1px solid rgba(196,77,255,.08)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B9D,#C44DFF);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{color:#8B7BAA;font-size:.8rem}
.review-stars{color:#FFD700;font-size:.9rem;margin-bottom:10px;letter-spacing:2px}
.review-card p{color:#4A3B6B;font-size:.93rem;line-height:1.7}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:28px}
.contact-card{background:#fff;border-radius:14px;padding:28px;text-align:center;box-shadow:0 4px 20px rgba(26,11,46,.06);border:1px solid rgba(196,77,255,.08)}
.contact-card h3{font-size:1.1rem;margin-bottom:12px;color:#1A0B2E}
.contact-card p{color:#6B5B8D;font-size:.92rem;line-height:1.6;margin-bottom:8px}
.contact-card img{max-width:160px;margin:12px auto 0;border-radius:8px}

/* === How-To指南 === */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px;max-width:960px;margin:0 auto}
.howto-step{text-align:center;padding:24px 16px}
.step-num{width:48px;height:48px;background:linear-gradient(135deg,#FF6B9D,#C44DFF);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.3rem;font-weight:700;margin:0 auto 14px}
.howto-step h3{font-size:1rem;margin-bottom:8px}
.howto-step p{color:#6B5B8D;font-size:.9rem}

/* === 社交分享 === */
.share-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.share-btn{padding:10px 20px;border-radius:25px;color:#fff;font-size:.9rem;transition:all .3s;display:flex;align-items:center;gap:6px;cursor:pointer;border:none}
.share-btn: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:linear-gradient(135deg,#1A0B2E,#2D1854);color:rgba(255,255,255,.7);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:40px}
.footer-col h4{color:#fff;font-size:1.05rem;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;bottom:0;left:0;width:40px;height:2px;background:linear-gradient(135deg,#FF6B9D,#C44DFF)}
.footer-col p,.footer-col a{color:rgba(255,255,255,.6);font-size:.9rem;line-height:1.8}
.footer-col a:hover{color:#FF6B9D}
.footer-col ul li{margin-bottom:6px}
.footer-col ul li a{display:block}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-logo img{height:36px}
.footer-logo span{color:#fff;font-size:1.1rem;font-weight:700}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:.85rem}
.footer-bottom p{color:rgba(255,255,255,.5)}
.footer-qr{display:flex;gap:20px;margin-top:12px}
.footer-qr img{width:100px;height:100px;border-radius:8px}
.footer-qr-label{font-size:.8rem;text-align:center;margin-top:6px;color:rgba(255,255,255,.5)}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.9rem;color:#8B7BAA}
.breadcrumb a{color:#C44DFF}
.breadcrumb span{margin:0 8px;color:#8B7BAA}

/* === 内页Banner === */
.page-banner{height:280px;position:relative;overflow:hidden;background:#1A0B2E;display:flex;align-items:center;justify-content:center}
.page-banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.4)}
.page-banner-content{position:relative;z-index:2;text-align:center;color:#fff}
.page-banner-content h1{font-size:2.2rem;color:#fff;margin-bottom:8px}
.page-banner-content p{color:rgba(255,255,255,.8);font-size:1.05rem}

/* === 标签云 === */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag-cloud a{padding:6px 16px;background:rgba(196,77,255,.08);color:#C44DFF;border-radius:20px;font-size:.85rem;transition:all .3s;border:1px solid rgba(196,77,255,.15)}
.tag-cloud a:hover{background:linear-gradient(135deg,#FF6B9D,#C44DFF);color:#fff;border-color:transparent}

/* === 数据统计 === */
.stats-bar{background:linear-gradient(135deg,#FF6B9D,#C44DFF);padding:40px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item h3{font-size:2.2rem;color:#fff;font-weight:700}
.stat-item p{color:rgba(255,255,255,.85);font-size:.95rem;margin-top:4px}

/* === 内容区 === */
.content-area{padding:40px 0}
.content-area article{background:#fff;border-radius:16px;padding:36px;box-shadow:0 4px 20px rgba(26,11,46,.06);margin-bottom:28px}
.content-area article h2{font-size:1.5rem;margin-bottom:16px;color:#1A0B2E}
.content-area article p{color:#4A3B6B;line-height:1.8;margin-bottom:14px}

/* === 响应式 === */
@media(max-width:768px){
  .nav-menu{display:none;position:absolute;top:68px;left:0;right:0;background:#1A0B2E;flex-direction:column;padding:16px;gap:4px;box-shadow:0 8px 20px rgba(0,0,0,.3)}
  .nav-menu.show{display:flex}
  .nav-toggle{display:flex}
  .hero{height:400px}
  .hero-content h1{font-size:1.8rem}
  .hero-content p{font-size:1rem}
  .section{padding:40px 0}
  .section-title h2{font-size:1.5rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr 1fr}
  .page-banner{height:200px}
  .page-banner-content h1{font-size:1.6rem}
}
@media(max-width:480px){
  .hero{height:340px}
  .hero-content h1{font-size:1.5rem}
  .video-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .module-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .nav-logo span{font-size:1rem}
}

/* === 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)}}
.animate-in{animation:fadeInUp .6s ease forwards}

/* === 暗色区块 === */
.dark-section{background:linear-gradient(135deg,#1A0B2E,#2D1854);color:#fff}
.dark-section .section-title h2{color:#fff;-webkit-text-fill-color:#fff}
.dark-section .section-title p{color:rgba(255,255,255,.7)}
.dark-section .module-card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.1)}
.dark-section .module-card h3{color:#fff}
.dark-section .module-card p{color:rgba(255,255,255,.65)}