/* ============================================
   糖心vlog - 原创样式表
   品牌色系：糖心红 #E8475F / 深紫 #2B1B4E / 暖橙 #FF8C42
   ============================================ */

/* === 基础重置与全局 === */
*,*::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:#0F0A1A;color:#F0E6FF;line-height:1.7;overflow-x:hidden}
a{color:#FF8C42;text-decoration:none;transition:color .3s}
a:hover{color:#E8475F}
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:#F0E6FF}

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

/* === 顶部导航 === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(15,10,26,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(232,71,95,.15);transition:background .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;max-width:1200px;margin:0 auto;padding:0 20px}
.logo-link{display:flex;align-items:center;gap:10px}
.logo-link img{height:42px;width:auto}
.logo-text{font-size:1.25rem;font-weight:800;color:#E8475F;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 14px;border-radius:6px;font-size:.9rem;color:#A89BC9;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#FF8C42;background:rgba(255,140,66,.08)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#F0E6FF;border-radius:2px;transition:all .3s}

/* === 搜索框 === */
.search-bar{background:rgba(26,18,48,.8);padding:16px 0;border-bottom:1px solid rgba(232,71,95,.1)}
.search-wrap{max-width:600px;margin:0 auto;position:relative}
.search-wrap input{width:100%;padding:12px 50px 12px 20px;border-radius:30px;border:1px solid rgba(168,155,201,.3);background:rgba(43,27,78,.6);color:#F0E6FF;font-size:.95rem;outline:none;transition:border-color .3s}
.search-wrap input:focus{border-color:#E8475F}
.search-wrap input::placeholder{color:#A89BC9}
.search-wrap button{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;border:none;background:#E8475F;color:#fff;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:background .3s}
.search-wrap button:hover{background:#FF8C42}

/* === Banner区域 === */
.hero-banner{position:relative;width:100%;min-height:520px;overflow:hidden;margin-top:68px;display:flex;align-items:center;justify-content:center}
.hero-banner .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.55)}
.hero-content{position:relative;z-index:2;text-align:center;padding:60px 20px;max-width:800px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(232,71,95,.5)}
.hero-content h1 span{color:#E8475F}
.hero-content p{font-size:1.15rem;color:#ddd;margin-bottom:24px;line-height:1.8}
.hero-btn{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#E8475F,#FF8C42);color:#fff;border-radius:30px;font-size:1rem;font-weight:600;transition:transform .3s,box-shadow .3s}
.hero-btn:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(232,71,95,.4);color:#fff}

/* === 通用Section === */
.section{padding:70px 0}
.section-title{text-align:center;margin-bottom:50px}
.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,#E8475F,#FF8C42);border-radius:2px}
.section-title p{color:#A89BC9;margin-top:16px;font-size:1rem}
.section-alt{background:rgba(26,18,48,.5)}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.video-card{background:#1A1230;border-radius:12px;overflow:hidden;transition:transform .3s,box-shadow .3s;border:1px solid rgba(168,155,201,.1)}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(232,71,95,.15)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;cursor:pointer}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;background:rgba(0,0,0,.35)}
.video-card:hover .play-btn{opacity:1}
.play-btn svg{width:56px;height:56px;fill:#fff;filter:drop-shadow(0 2px 8px rgba(0,0,0,.5))}
.video-info{padding:16px}
.video-info h3{font-size:1.05rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:14px;color:#A89BC9;font-size:.82rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:3px 10px;border-radius:12px;font-size:.75rem;background:rgba(232,71,95,.15);color:#E8475F;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:#1A1230;border-radius:12px;padding:28px 24px;border:1px solid rgba(168,155,201,.1);transition:all .3s;text-align:center}
.module-card:hover{border-color:#E8475F;box-shadow:0 0 30px rgba(232,71,95,.1)}
.module-card .icon{width:56px;height:56px;margin:0 auto 16px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;background:linear-gradient(135deg,rgba(232,71,95,.15),rgba(255,140,66,.15))}
.module-card h3{font-size:1.1rem;margin-bottom:10px}
.module-card p{color:#A89BC9;font-size:.9rem;line-height:1.6}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:28px}
.expert-card{background:#1A1230;border-radius:14px;padding:28px 20px;text-align:center;border:1px solid rgba(168,155,201,.1);transition:all .3s}
.expert-card:hover{border-color:#FF8C42;transform:translateY(-4px)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:3px solid #E8475F}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.05rem;margin-bottom:4px}
.expert-card .role{color:#FF8C42;font-size:.85rem;margin-bottom:10px}
.expert-card p{color:#A89BC9;font-size:.85rem;line-height:1.5;margin-bottom:14px}
.expert-card .btn-sm{display:inline-block;padding:7px 18px;border-radius:20px;font-size:.82rem;border:1px solid #E8475F;color:#E8475F;transition:all .3s;margin:3px}
.expert-card .btn-sm:hover{background:#E8475F;color:#fff}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#1A1230;border-radius:10px;margin-bottom:12px;border:1px solid rgba(168,155,201,.1);overflow:hidden}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:background .3s}
.faq-q:hover{background:rgba(232,71,95,.05)}
.faq-q .arrow{transition:transform .3s;color:#E8475F;font-size:1.2rem}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s;padding:0 24px}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 18px}
.faq-a p{color:#A89BC9;font-size:.92rem;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:#1A1230;border-radius:12px;padding:24px;border:1px solid rgba(168,155,201,.1)}
.review-card .stars{color:#FF8C42;font-size:1rem;margin-bottom:10px;letter-spacing:2px}
.review-card blockquote{color:#ddd;font-size:.92rem;line-height:1.7;margin-bottom:14px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.reviewer-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#E8475F,#FF8C42);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.85rem}
.reviewer-info .name{font-size:.9rem;font-weight:600}
.reviewer-info .date{font-size:.78rem;color:#A89BC9}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:28px}
.contact-card{background:#1A1230;border-radius:12px;padding:28px;text-align:center;border:1px solid rgba(168,155,201,.1)}
.contact-card h4{font-size:1.05rem;margin-bottom:14px;color:#FF8C42}
.contact-card p{color:#A89BC9;font-size:.9rem;line-height:1.7}
.contact-card img{max-width:160px;margin:12px auto 0;border-radius:8px}

/* === 社交分享 === */
.share-bar{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:24px;font-size:.88rem;color:#fff;transition:all .3s;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}

/* === 合作品牌 === */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center;padding:20px 0}
.brand-wall .brand-item{width:120px;height:60px;background:rgba(43,27,78,.5);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#A89BC9;font-size:.85rem;border:1px solid rgba(168,155,201,.1);transition:all .3s}
.brand-wall .brand-item:hover{border-color:#E8475F;color:#F0E6FF}

/* === How-To指南 === */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;counter-reset:step}
.howto-step{background:#1A1230;border-radius:12px;padding:28px 24px;border:1px solid rgba(168,155,201,.1);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-14px;left:24px;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#E8475F,#FF8C42);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}
.howto-step h4{margin-bottom:10px;padding-top:6px}
.howto-step p{color:#A89BC9;font-size:.9rem;line-height:1.6}

/* === 页脚 === */
.site-footer{background:#0A0614;border-top:1px solid rgba(232,71,95,.15);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{font-size:1rem;margin-bottom:16px;color:#E8475F}
.footer-col p,.footer-col a{color:#A89BC9;font-size:.88rem;line-height:1.8}
.footer-col a:hover{color:#FF8C42}
.footer-col ul li{margin-bottom:6px}
.footer-qr{display:flex;gap:20px;margin-top:10px}
.footer-qr img{width:100px;border-radius:8px}
.footer-bottom{border-top:1px solid rgba(168,155,201,.1);padding:20px 0;text-align:center;color:#A89BC9;font-size:.82rem}
.footer-logo{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-logo img{height:36px}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#A89BC9}
.breadcrumb a{color:#FF8C42}
.breadcrumb span{margin:0 6px;color:#666}

/* === 内页通用 === */
.page-hero{padding:100px 0 50px;text-align:center;background:linear-gradient(180deg,rgba(43,27,78,.6),rgba(15,10,26,1))}
.page-hero h1{font-size:2.2rem;margin-bottom:12px}
.page-hero p{color:#A89BC9;font-size:1.05rem}

/* === 响应式 === */
@media(max-width:768px){
  .main-nav{position:fixed;top:68px;left:0;width:100%;background:rgba(15,10,26,.98);flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .3s;border-bottom:1px solid rgba(232,71,95,.15)}
  .main-nav.open{transform:translateY(0)}
  .nav-toggle{display:flex}
  .hero-content h1{font-size:1.8rem}
  .hero-banner{min-height:380px}
  .section{padding:50px 0}
  .section-title h2{font-size:1.5rem}
  .video-grid{grid-template-columns:1fr}
  .module-grid{grid-template-columns:1fr 1fr}
  .expert-grid{grid-template-columns:1fr 1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .header-inner{padding:0 16px}
}
@media(max-width:480px){
  .module-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
}

/* === 懒加载占位 === */
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}

/* === MCP服务前端占位 === */
.mcp-widget{background:#1A1230;border-radius:12px;padding:24px;border:1px solid rgba(168,155,201,.1);text-align:center;margin:20px 0}
.mcp-widget h4{color:#FF8C42;margin-bottom:10px}
.mcp-widget p{color:#A89BC9;font-size:.88rem}

/* === H5 Video卡片增强 === */
.video-thumb video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:none;z-index:1}
.video-poster{position:relative;z-index:2;transition:transform .4s}
.play-btn{z-index:3}
.play-btn.visible{opacity:1}
.video-coming-soon{position:absolute;inset:0;z-index:10;background:rgba(15,10,26,.85);display:flex;align-items:center;justify-content:center;animation:fadeInUp .3s ease}
.coming-soon-inner{text-align:center;color:#F0E6FF}
.coming-soon-inner p:first-child{font-size:1.2rem;font-weight:700;margin-bottom:6px;color:#E8475F}
.coming-soon-inner p:last-child{font-size:.88rem;color:#A89BC9}
.video-author{font-size:.8rem;color:#A89BC9;margin-top:4px;margin-bottom:4px}
.video-author strong{color:#FF8C42}

/* === 专家资质标签 === */
.expert-credential{font-size:.78rem;color:#FF8C42;background:rgba(255,140,66,.08);padding:4px 12px;border-radius:16px;display:inline-block;margin-bottom:8px}