/* ============================================
   糖心vlog - 原创样式表
   品牌色系：珊瑚粉 #E8637A / 深紫 #2D1B4E / 金色 #D4A843 / 暗底 #1A1225
   ============================================ */

/* --- Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#f0e6f6;background:#1A1225;line-height:1.7;overflow-x:hidden}
a{color:#E8637A;text-decoration:none;transition:color .3s}
a:hover{color:#D4A843}
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 --- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* --- Header / Nav --- */
.site-header{background:linear-gradient(180deg,#1A1225 0%,rgba(26,18,37,.95) 100%);position:sticky;top:0;z-index:1000;border-bottom:1px solid rgba(232,99,122,.15);backdrop-filter:blur(12px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 0;flex-wrap:wrap}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-wrap span{font-size:1.3rem;font-weight:800;background:linear-gradient(135deg,#E8637A,#D4A843);-webkit-background-clip:text;-webkit-text-fill-color:transparent}

/* Nav */
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{padding:12px 16px;font-size:.95rem;color:#c9b8d9;transition:all .3s;position:relative;white-space:nowrap}
.main-nav a::after{content:'';position:absolute;bottom:6px;left:50%;transform:translateX(-50%);width:0;height:2px;background:#E8637A;transition:width .3s}
.main-nav a:hover,.main-nav a.active{color:#E8637A}
.main-nav a:hover::after,.main-nav a.active::after{width:60%}

/* Mobile menu */
.menu-toggle{display:none;background:none;border:none;color:#E8637A;font-size:1.6rem;cursor:pointer;padding:8px}

/* --- Search Bar --- */
.search-bar{background:rgba(45,27,78,.6);padding:12px 0;border-bottom:1px solid rgba(232,99,122,.08)}
.search-bar form{display:flex;max-width:600px;margin:0 auto}
.search-bar input{flex:1;padding:10px 18px;border:1px solid rgba(232,99,122,.3);border-right:none;border-radius:25px 0 0 25px;background:rgba(26,18,37,.8);color:#f0e6f6;font-size:.95rem;outline:none}
.search-bar input::placeholder{color:#8a7a9a}
.search-bar input:focus{border-color:#E8637A}
.search-bar button{padding:10px 24px;background:linear-gradient(135deg,#E8637A,#c74d63);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;transition:background .3s}
.search-bar button:hover{background:linear-gradient(135deg,#D4A843,#b8922f)}

/* --- Hero Banner --- */
.hero{position:relative;overflow:hidden;min-height:420px;display:flex;align-items:center;justify-content:center;text-align:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(26,18,37,.3) 0%,rgba(26,18,37,.85) 100%)}
.hero-content{position:relative;z-index:2;padding:60px 20px}
.hero h1{font-size:2.6rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.5)}
.hero h1 em{font-style:normal;color:#E8637A}
.hero p{font-size:1.15rem;color:#c9b8d9;max-width:680px;margin:0 auto 28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.hero-tags span{padding:6px 18px;border-radius:20px;background:rgba(232,99,122,.15);border:1px solid rgba(232,99,122,.3);font-size:.85rem;color:#E8637A}

/* --- Breadcrumb --- */
.breadcrumb{padding:12px 0;font-size:.85rem;color:#8a7a9a}
.breadcrumb a{color:#c9b8d9}
.breadcrumb span{margin:0 6px}

/* --- Section Common --- */
.section{padding:56px 0}
.section-alt{background:rgba(45,27,78,.25)}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:1.9rem;margin-bottom:8px}
.section-title h2 em{font-style:normal;color:#E8637A}
.section-title p{color:#8a7a9a;font-size:1rem}

/* --- Video Grid --- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{position:relative;border-radius:12px;overflow:hidden;background:#241a36;transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(232,99,122,.2)}
.video-card .thumb{position:relative;padding-top:133%;overflow:hidden}
.video-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .thumb img{transform:scale(1.06)}
.video-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(232,99,122,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;pointer-events:none}
.video-card:hover .play-btn{opacity:1}
.play-btn::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card .card-info{padding:14px}
.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;gap:12px;font-size:.8rem;color:#8a7a9a}
.video-card .card-info .meta span{display:flex;align-items:center;gap:4px}
.video-card .tag{position:absolute;top:10px;left:10px;padding:3px 10px;border-radius:4px;background:rgba(232,99,122,.9);color:#fff;font-size:.75rem;z-index:3}

/* --- Expert Cards --- */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:linear-gradient(145deg,#241a36,#2D1B4E);border-radius:14px;padding:28px 20px;text-align:center;border:1px solid rgba(232,99,122,.1);transition:border-color .3s}
.expert-card:hover{border-color:rgba(232,99,122,.4)}
.expert-card img{width:90px;height:90px;border-radius:50%;object-fit:cover;margin:0 auto 14px;border:3px solid rgba(212,168,67,.4)}
.expert-card h4{font-size:1.05rem;margin-bottom:4px}
.expert-card .role{color:#D4A843;font-size:.85rem;margin-bottom:10px}
.expert-card p{font-size:.85rem;color:#8a7a9a;margin-bottom:14px}
.expert-card .btns{display:flex;gap:8px;justify-content:center}
.expert-card .btns a{padding:6px 16px;border-radius:20px;font-size:.8rem;border:1px solid rgba(232,99,122,.4);color:#E8637A;transition:all .3s}
.expert-card .btns a:hover{background:#E8637A;color:#fff}

/* --- FAQ --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid rgba(232,99,122,.1);padding:18px 0}
.faq-item h4{font-size:1rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:#f0e6f6;transition:color .3s}
.faq-item h4:hover{color:#E8637A}
.faq-item h4::after{content:'+';font-size:1.3rem;color:#E8637A;transition:transform .3s}
.faq-item.open h4::after{transform:rotate(45deg)}
.faq-item .faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;color:#8a7a9a;font-size:.92rem;line-height:1.8}
.faq-item.open .faq-answer{max-height:300px;padding-top:12px}

/* --- Reviews --- */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:linear-gradient(145deg,#241a36,#1e1530);border-radius:12px;padding:24px;border:1px solid rgba(232,99,122,.08)}
.review-card .stars{color:#D4A843;font-size:1rem;margin-bottom:10px;letter-spacing:2px}
.review-card blockquote{font-size:.92rem;color:#c9b8d9;margin-bottom:14px;line-height:1.8;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px;font-size:.85rem;color:#8a7a9a}
.review-card .reviewer strong{color:#f0e6f6}

/* --- Partner Wall --- */
.partner-wall{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;align-items:center}
.partner-wall img{height:60px;width:auto;opacity:.6;transition:opacity .3s;filter:grayscale(.5)}
.partner-wall img:hover{opacity:1;filter:grayscale(0)}

/* --- How-To Guide --- */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.howto-step{text-align:center;padding:24px 16px;background:rgba(45,27,78,.4);border-radius:12px;border:1px solid rgba(232,99,122,.08)}
.howto-step .step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#E8637A,#D4A843);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:1.2rem;font-weight:800;color:#fff}
.howto-step h4{font-size:.95rem;margin-bottom:8px}
.howto-step p{font-size:.85rem;color:#8a7a9a}

/* --- Contact Section --- */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-card{background:rgba(45,27,78,.35);border-radius:12px;padding:28px;border:1px solid rgba(232,99,122,.1)}
.contact-card h4{font-size:1.1rem;margin-bottom:16px;color:#D4A843}
.contact-card p{font-size:.9rem;color:#c9b8d9;margin-bottom:8px}
.contact-card .qr-wrap{display:flex;gap:20px;margin-top:16px}
.contact-card .qr-wrap img{width:130px;height:130px;border-radius:8px}
.contact-card .qr-wrap .qr-label{font-size:.8rem;color:#8a7a9a;text-align:center;margin-top:6px}

/* --- Share Bar --- */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.share-bar a{display:flex;align-items:center;gap:6px;padding:8px 20px;border-radius:25px;font-size:.85rem;color:#fff;transition:transform .3s}
.share-bar a:hover{transform:scale(1.05);color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* --- Footer --- */
.site-footer{background:#120d1c;border-top:1px solid rgba(232,99,122,.1);padding:40px 0 20px}
.footer-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h5{font-size:1rem;margin-bottom:14px;color:#D4A843}
.footer-col p,.footer-col a{font-size:.85rem;color:#8a7a9a;display:block;margin-bottom:6px}
.footer-col a:hover{color:#E8637A}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(232,99,122,.06);font-size:.82rem;color:#5a4d6e}
.footer-bottom .update-time{margin-top:6px;color:#8a7a9a}

/* --- EEAT Bar --- */
.eeat-bar{background:rgba(45,27,78,.35);padding:8px 0;border-bottom:1px solid rgba(232,99,122,.06);font-size:.82rem;color:#8a7a9a}
.eeat-bar .container{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.eeat-editor,.eeat-source,.eeat-update{display:inline-flex;align-items:center;gap:4px}
.eeat-editor::before{content:'\270D';margin-right:2px}
.eeat-source::before{content:'\1F4CE';margin-right:2px}
.eeat-update::before{content:'\1F4C5';margin-right:2px}

/* --- Content Block --- */
.content-block{margin-top:48px;padding:32px;background:rgba(45,27,78,.3);border-radius:14px;border:1px solid rgba(232,99,122,.08)}
.content-block h3{font-size:1.2rem;color:#D4A843;margin-bottom:14px}
.content-block h4{font-size:1.05rem;color:#c9b8d9;margin:20px 0 10px}
.content-block h5{font-size:.95rem;color:#c9b8d9;margin:18px 0 8px}
.content-block h6{font-size:.85rem;color:#8a7a9a;margin-top:18px;font-weight:400}
.content-block p{font-size:.92rem;color:#8a7a9a;line-height:1.9}

/* --- Sub Heading Page --- */
.sub-heading-page{font-size:1.3rem;margin:0 0 20px;color:#D4A843;padding-bottom:8px;border-bottom:1px solid rgba(212,168,67,.15)}
.sub-heading-page + .video-grid{margin-bottom:40px}

/* --- H5 Video in Cards --- */
.video-card .thumb video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .thumb video{transform:scale(1.06)}

/* --- Lazy Load Placeholder --- */
.lazy{opacity:0;transition:opacity .6s}
.lazy.loaded{opacity:1}

/* --- Responsive --- */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .menu-toggle{display:block}
  .main-nav{display:none;width:100%;flex-direction:column;background:#1A1225;position:absolute;top:100%;left:0;border-top:1px solid rgba(232,99,122,.1)}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 20px;border-bottom:1px solid rgba(232,99,122,.05)}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .hero h1{font-size:1.8rem}
  .hero{min-height:320px}
  .header-inner{position:relative}
  .footer-inner{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .hero h1{font-size:1.5rem}
  .section{padding:36px 0}
}