/* ============================================
   糖心vlog - 原创样式表
   配色：珊瑚粉 #FF6B8A / 蜜桃 #FFB4A2 / 深紫 #2D1B4E / 暖白 #FFF5F0
   ============================================ */
*{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:#FFF5F0;color:#3A2D4F;line-height:1.7}
a{color:#FF6B8A;text-decoration:none;transition:color .3s}
a:hover{color:#E04E6F}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 顶部导航 === */
.site-header{background:linear-gradient(135deg,#2D1B4E 0%,#4A2D6E 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 20px rgba(45,27,78,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{width:42px;height:42px;border-radius:10px}
.logo-wrap span{color:#fff;font-size:1.3rem;font-weight:700;letter-spacing:1px}
.main-nav{display:flex;gap:6px;flex-wrap:wrap}
.main-nav a{color:rgba(255,255,255,.85);padding:8px 14px;border-radius:8px;font-size:.9rem;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:rgba(255,107,138,.25);color:#FFB4A2}
.mobile-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* === 搜索框 === */
.search-bar{background:linear-gradient(90deg,#3D2560,#2D1B4E);padding:14px 0}
.search-wrap{max-width:640px;margin:0 auto;display:flex;gap:0;padding:0 20px}
.search-wrap input{flex:1;padding:12px 20px;border:2px solid rgba(255,107,138,.3);border-right:none;border-radius:25px 0 0 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:#FF6B8A}
.search-wrap button{padding:12px 28px;background:linear-gradient(135deg,#FF6B8A,#FF8FA3);border:none;border-radius:0 25px 25px 0;color:#fff;font-size:.95rem;cursor:pointer;transition:transform .2s}
.search-wrap button:hover{transform:scale(1.05)}

/* === Banner区 === */
.hero-banner{position:relative;height:480px;overflow:hidden;background:#2D1B4E}
.hero-banner img{width:100%;height:100%;object-fit:cover;opacity:.6}
.hero-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:20px;background:linear-gradient(to bottom,rgba(45,27,78,.3),rgba(45,27,78,.7))}
.hero-overlay h1{color:#fff;font-size:2.8rem;margin-bottom:16px;text-shadow:0 4px 20px rgba(0,0,0,.5)}
.hero-overlay h1 em{font-style:normal;color:#FF6B8A}
.hero-overlay p{color:rgba(255,255,255,.9);font-size:1.15rem;max-width:700px;line-height:1.8}

/* === 通用板块 === */
.section{padding:60px 0}
.section-alt{background:#F5EBE6}
.section-dark{background:linear-gradient(135deg,#2D1B4E,#3D2560);color:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:1.9rem;color:#2D1B4E;margin-bottom:8px}
.section-dark .section-title h2{color:#FFB4A2}
.section-title h2 em{font-style:normal;color:#FF6B8A}
.section-title .divider{width:60px;height:3px;background:linear-gradient(90deg,#FF6B8A,#FFB4A2);margin:10px auto;border-radius:2px}
.section-title p{color:#7A6B8A;font-size:1rem;max-width:600px;margin:0 auto}
.section-dark .section-title p{color:rgba(255,255,255,.7)}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 4px 20px rgba(45,27,78,.08);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 36px rgba(255,107,138,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#2D1B4E}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;background:rgba(45,27,78,.4)}
.video-card:hover .play-btn{opacity:1}
.play-btn span{width:56px;height:56px;background:rgba(255,107,138,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(255,107,138,.4)}
.play-btn span::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,.75);color:#fff;padding:3px 8px;border-radius:4px;font-size:.8rem}
.video-info{padding:16px}
.video-info h3{font-size:1.05rem;color:#2D1B4E;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info .desc{font-size:.85rem;color:#7A6B8A;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-stats{display:flex;gap:14px;font-size:.8rem;color:#9B8DAB;margin-bottom:8px}
.video-tags{display:flex;flex-wrap:wrap;gap:6px}
.video-tags span{background:linear-gradient(135deg,rgba(255,107,138,.1),rgba(255,180,162,.1));color:#FF6B8A;padding:3px 10px;border-radius:12px;font-size:.75rem}

/* === 分类导航条 === */
.category-tabs{display:flex;justify-content:center;gap:12px;margin-bottom:30px;flex-wrap:wrap}
.category-tabs a{padding:8px 22px;border-radius:20px;background:rgba(255,107,138,.08);color:#7A6B8A;font-size:.9rem;transition:all .3s}
.category-tabs a:hover,.category-tabs a.active{background:linear-gradient(135deg,#FF6B8A,#FF8FA3);color:#fff}

/* === AI赋能区 === */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ai-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,180,162,.15);border-radius:14px;padding:30px;text-align:center;transition:all .3s}
.ai-card:hover{background:rgba(255,107,138,.08);border-color:rgba(255,107,138,.3);transform:translateY(-4px)}
.ai-card .icon{font-size:2.5rem;margin-bottom:16px}
.ai-card h3{color:#FFB4A2;font-size:1.15rem;margin-bottom:10px}
.ai-card p{color:rgba(255,255,255,.65);font-size:.9rem}

/* === 社区功能 === */
.community-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.community-card{display:flex;gap:20px;background:#fff;border-radius:14px;padding:24px;box-shadow:0 4px 16px rgba(45,27,78,.06);transition:all .3s}
.community-card:hover{box-shadow:0 8px 30px rgba(255,107,138,.12);transform:translateY(-3px)}
.community-card .icon{font-size:2rem;flex-shrink:0;width:60px;height:60px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(255,107,138,.1),rgba(255,180,162,.1));border-radius:14px}
.community-card h3{color:#2D1B4E;font-size:1.05rem;margin-bottom:6px}
.community-card p{color:#7A6B8A;font-size:.88rem}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:14px;overflow:hidden;text-align:center;box-shadow:0 4px 16px rgba(45,27,78,.06);transition:all .3s}
.expert-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(255,107,138,.12)}
.expert-card img{width:100%;aspect-ratio:1;object-fit:cover}
.expert-card .info{padding:16px}
.expert-card h3{font-size:1rem;color:#2D1B4E;margin-bottom:4px}
.expert-card .title{color:#FF6B8A;font-size:.82rem;margin-bottom:4px}
.expert-card .cert{color:#9B8DAB;font-size:.78rem;margin-bottom:10px}
.expert-card .btns{display:flex;gap:8px;justify-content:center}
.expert-card .btns a{padding:5px 14px;border-radius:15px;font-size:.78rem;transition:all .3s}
.expert-card .btns .btn-primary{background:linear-gradient(135deg,#FF6B8A,#FF8FA3);color:#fff}
.expert-card .btns .btn-outline{border:1px solid #FF6B8A;color:#FF6B8A}
.expert-card .btns a:hover{transform:scale(1.05)}

/* === 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 10px rgba(45,27,78,.05)}
.faq-item summary{padding:18px 24px;cursor:pointer;font-weight:600;color:#2D1B4E;font-size:1rem;list-style:none;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-item summary:hover{background:rgba(255,107,138,.04)}
.faq-item summary::after{content:'+';font-size:1.4rem;color:#FF6B8A;transition:transform .3s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .answer{padding:0 24px 18px;color:#7A6B8A;font-size:.92rem;line-height:1.8}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:#fff;border-radius:14px;padding:24px;box-shadow:0 4px 16px rgba(45,27,78,.06)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#FF6B8A,#FFB4A2);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-name{font-weight:600;color:#2D1B4E;font-size:.95rem}
.review-date{color:#9B8DAB;font-size:.78rem}
.review-stars{color:#FFB74D;font-size:.9rem;margin-bottom:8px}
.review-text{color:#5A4D6A;font-size:.9rem;line-height:1.7}

/* === 合作品牌 === */
.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(255,255,255,.06);border:1px solid rgba(255,180,162,.15);border-radius:10px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.6);font-size:.9rem;transition:all .3s}
.brand-wall .brand-item:hover{background:rgba(255,107,138,.1);border-color:#FF6B8A;color:#FFB4A2}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:#fff;border-radius:14px;padding:24px;text-align:center;box-shadow:0 4px 16px rgba(45,27,78,.06)}
.contact-card .icon{font-size:2rem;margin-bottom:12px}
.contact-card h3{color:#2D1B4E;font-size:1rem;margin-bottom:8px}
.contact-card p{color:#7A6B8A;font-size:.88rem}
.contact-card img{width:120px;height:120px;margin:10px auto 0;border-radius:8px}

/* === How-To指南 === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:900px;margin:0 auto}
.howto-step{text-align:center;padding:20px}
.howto-step .num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B8A,#FFB4A2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;margin:0 auto 14px}
.howto-step h4{color:#2D1B4E;font-size:.95rem;margin-bottom:6px}
.howto-step p{color:#7A6B8A;font-size:.82rem}

/* === 分享按钮 === */
.share-bar{display:flex;justify-content:center;gap:16px;padding:20px 0}
.share-btn{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;transition:transform .3s;cursor:pointer}
.share-btn:hover{transform:scale(1.15)}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* === 页脚 === */
.site-footer{background:#1A0F2E;color:rgba(255,255,255,.6);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:40px}
.footer-col h4{color:#FFB4A2;font-size:1rem;margin-bottom:16px}
.footer-col p{font-size:.85rem;line-height:1.8;margin-bottom:6px}
.footer-col a{color:rgba(255,255,255,.5);font-size:.85rem;display:block;padding:3px 0;transition:color .3s}
.footer-col a:hover{color:#FF6B8A}
.footer-col .qr-wrap{display:flex;gap:16px;margin-top:10px}
.footer-col .qr-wrap img{width:100px;height:100px;border-radius:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:.82rem}
.footer-bottom a{color:rgba(255,255,255,.4)}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#9B8DAB}
.breadcrumb a{color:#FF6B8A}
.breadcrumb span{margin:0 6px;color:#C4B8D4}

/* === 内页通用 === */
.page-header{background:linear-gradient(135deg,#2D1B4E,#4A2D6E);padding:50px 0;text-align:center}
.page-header h1{color:#fff;font-size:2rem;margin-bottom:8px}
.page-header h1 em{font-style:normal;color:#FF6B8A}
.page-header p{color:rgba(255,255,255,.7);font-size:1rem}
.page-content{padding:40px 0}
.content-block{background:#fff;border-radius:14px;padding:30px;margin-bottom:24px;box-shadow:0 4px 16px rgba(45,27,78,.06)}
.content-block h2{color:#2D1B4E;font-size:1.4rem;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid rgba(255,107,138,.15)}
.content-block h2 em{font-style:normal;color:#FF6B8A}
.content-block p{color:#5A4D6A;margin-bottom:12px}

/* === 响应式 === */
@media(max-width:992px){
  .video-grid,.ai-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;width:100%;flex-direction:column;padding-top:10px}
  .main-nav.show{display:flex}
  .mobile-toggle{display:block}
  .hero-banner{height:360px}
  .hero-overlay h1{font-size:1.8rem}
  .video-grid,.community-grid,.review-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .category-tabs{gap:6px}
  .section{padding:40px 0}
}