/* ============================================
   糖心vlog - 原创样式表
   品牌色系：甜蜜粉 #FF6B9D / 深玫红 #C44569 / 暖金 #FFD93D
   ============================================ */

/* === 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:#2D2D2D;background:#FFF5F7;line-height:1.8;overflow-x:hidden}
a{text-decoration:none;color:inherit;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:1.4}

/* === 通用容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:32px;color:#2D2D2D;position:relative;display:inline-block;padding-bottom:15px}
.section-title h2::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:4px;background:linear-gradient(135deg,#FF6B9D,#C44569);border-radius:2px}
.section-title p{color:#666;font-size:16px;margin-top:12px}

/* === 顶部导航 === */
.site-header{background:#fff;box-shadow:0 2px 20px rgba(255,107,157,.1);position:sticky;top:0;z-index:1000;transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 4px 30px rgba(255,107,157,.2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-wrap span{font-size:22px;font-weight:800;background:linear-gradient(135deg,#FF6B9D,#C44569);-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 16px;font-size:15px;font-weight:500;border-radius:8px;transition:all .3s;color:#444}
.main-nav a:hover,.main-nav a.active{background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;-webkit-text-fill-color:#fff}
.search-box{position:relative;margin-left:15px}
.search-box input{width:200px;height:38px;border:2px solid #FFD1E0;border-radius:20px;padding:0 40px 0 16px;font-size:14px;outline:none;transition:all .3s;background:#FFF5F7}
.search-box input:focus{border-color:#FF6B9D;width:260px;background:#fff}
.search-box button{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:30px;height:30px;border:none;background:linear-gradient(135deg,#FF6B9D,#C44569);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center}
.search-box button svg{width:14px;height:14px;fill:#fff}

/* 移动端菜单 */
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.mobile-toggle span{width:24px;height:2px;background:#C44569;border-radius:2px;transition:all .3s}

/* === Hero Banner === */
.hero-section{position:relative;height:520px;overflow:hidden;background:#1a1a2e}
.hero-section .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.6)}
.hero-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#fff;padding:0 20px}
.hero-content h1{font-size:48px;margin-bottom:16px;text-shadow:0 4px 20px rgba(0,0,0,.4)}
.hero-content h1 em{font-style:normal;color:#FFD93D}
.hero-content p{font-size:20px;opacity:.9;max-width:700px;margin-bottom:30px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;border-radius:30px;font-size:16px;font-weight:600;border:none;cursor:pointer;transition:all .3s;box-shadow:0 6px 20px rgba(255,107,157,.4)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(255,107,157,.5)}
.btn-outline{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6);border-radius:30px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s}
.btn-outline:hover{background:rgba(255,255,255,.15);border-color:#fff}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:30px}
.video-card{position:relative;border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .4s;cursor:pointer}
.video-card:hover{transform:translateY(-8px);box-shadow:0 12px 40px rgba(255,107,157,.2)}
.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-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:60px;height:60px;background:rgba(255,107,157,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .4s;opacity:0}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1);opacity:1}
.play-btn::after{content:"";width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-card .card-body{padding:16px 18px}
.video-card .card-body h3{font-size:16px;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:#999}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:3px 10px;background:linear-gradient(135deg,#FFE8EF,#FFF0F5);color:#C44569;font-size:12px;border-radius:12px;margin-top:8px}
.duration-badge{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,.7);color:#fff;font-size:12px;padding:2px 8px;border-radius:4px}

/* === 模块通用 === */
.section-block{padding:80px 0}
.section-block:nth-child(even){background:#fff}
.section-block:nth-child(odd){background:#FFF5F7}

/* === 影视传媒模块 === */
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.media-item{background:#fff;border-radius:16px;padding:30px 24px;text-align:center;transition:all .4s;border:1px solid #FFE8EF}
.media-item:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(255,107,157,.15);border-color:#FF6B9D}
.media-item .icon-circle{width:70px;height:70px;border-radius:50%;background:linear-gradient(135deg,#FFE8EF,#FFF0F5);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:30px}
.media-item h4{font-size:18px;margin-bottom:10px;color:#2D2D2D}
.media-item p{font-size:14px;color:#666;line-height:1.7}

/* === AI赋能模块 === */
.ai-features{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;align-items:center}
.ai-features .ai-img{border-radius:20px;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.1)}
.ai-features .ai-img img{width:100%;transition:transform .5s}
.ai-features .ai-img:hover img{transform:scale(1.03)}
.ai-list{display:flex;flex-direction:column;gap:20px}
.ai-list .ai-item{display:flex;gap:16px;padding:20px;background:#fff;border-radius:14px;border:1px solid #FFE8EF;transition:all .3s}
.ai-list .ai-item:hover{border-color:#FF6B9D;box-shadow:0 6px 20px rgba(255,107,157,.1)}
.ai-list .ai-item .num{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex-shrink:0}
.ai-list .ai-item h4{font-size:16px;margin-bottom:6px}
.ai-list .ai-item p{font-size:14px;color:#666}

/* === 社区功能 === */
.community-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.community-card{background:#fff;border-radius:16px;padding:28px 20px;text-align:center;border:1px solid #FFE8EF;transition:all .4s}
.community-card:hover{transform:translateY(-6px);box-shadow:0 10px 30px rgba(255,107,157,.15);border-color:#FF6B9D}
.community-card .cc-icon{font-size:36px;margin-bottom:14px}
.community-card h4{font-size:16px;margin-bottom:8px}
.community-card p{font-size:13px;color:#666}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:16px;overflow:hidden;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.05);transition:all .4s}
.expert-card:hover{transform:translateY(-8px);box-shadow:0 12px 40px rgba(255,107,157,.2)}
.expert-card .expert-avatar{width:100%;aspect-ratio:1;overflow:hidden}
.expert-card .expert-avatar img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.expert-card:hover .expert-avatar img{transform:scale(1.08)}
.expert-card .expert-info{padding:20px 16px}
.expert-card .expert-info h4{font-size:18px;margin-bottom:4px}
.expert-card .expert-info .role{color:#FF6B9D;font-size:14px;font-weight:500;margin-bottom:10px}
.expert-card .expert-info p{font-size:13px;color:#666;line-height:1.6;margin-bottom:14px}
.expert-card .expert-btns{display:flex;gap:8px;justify-content:center;padding-bottom:6px}
.expert-card .expert-btns a{padding:6px 16px;border-radius:20px;font-size:13px;font-weight:500;transition:all .3s}
.expert-card .expert-btns .btn-sm-primary{background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff}
.expert-card .expert-btns .btn-sm-outline{border:1px solid #FF6B9D;color:#FF6B9D}
.expert-card .expert-btns .btn-sm-outline:hover{background:#FF6B9D;color:#fff}

/* === 合作品牌墙 === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;padding:20px 0}
.partner-wall .partner-item{width:160px;height:80px;background:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;border:1px solid #eee;transition:all .3s;padding:10px}
.partner-wall .partner-item:hover{border-color:#FF6B9D;box-shadow:0 4px 16px rgba(255,107,157,.15)}
.partner-wall .partner-item span{font-size:14px;font-weight:600;color:#666}

/* === 用户评价 === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#fff;border-radius:16px;padding:28px;border:1px solid #FFE8EF;transition:all .3s}
.review-card:hover{box-shadow:0 8px 30px rgba(255,107,157,.12)}
.review-card .review-header{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.review-card .review-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B9D,#C44569);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px;flex-shrink:0}
.review-card .review-name{font-weight:600;font-size:15px}
.review-card .review-date{font-size:12px;color:#999}
.review-card .stars{color:#FFD93D;font-size:14px;margin-bottom:10px;letter-spacing:2px}
.review-card .review-text{font-size:14px;color:#555;line-height:1.8}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:14px;margin-bottom:14px;border:1px solid #FFE8EF;overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:#FF6B9D}
.faq-item .faq-q{padding:20px 24px;font-weight:600;font-size:16px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-item .faq-q:hover{background:#FFF5F7}
.faq-item .faq-q .arrow{font-size:20px;color:#FF6B9D;transition:transform .3s}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s;font-size:14px;color:#666;line-height:1.8}
.faq-item.open .faq-a{padding:0 24px 20px;max-height:300px}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:18px}
.contact-info .ci-item{display:flex;gap:14px;align-items:flex-start;padding:16px;background:#fff;border-radius:12px;border:1px solid #FFE8EF}
.contact-info .ci-item .ci-icon{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,#FFE8EF,#FFF0F5);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.contact-info .ci-item h5{font-size:15px;margin-bottom:4px}
.contact-info .ci-item p{font-size:14px;color:#666}
.contact-qr{display:flex;gap:30px;justify-content:center}
.contact-qr .qr-item{text-align:center}
.contact-qr .qr-item img{width:160px;height:160px;border-radius:12px;border:2px solid #FFE8EF;margin-bottom:10px}
.contact-qr .qr-item p{font-size:14px;color:#666}

/* === 社交分享 === */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.share-bar a{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:24px;font-size:14px;font-weight:500;color:#fff;transition:all .3s}
.share-bar a:hover{transform:translateY(-3px);color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#111}
.share-bilibili{background:#00A1D6}

/* === 页脚 === */
.site-footer{background:#1a1a2e;color:#ccc;padding:50px 0 0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .footer-logo img{height:36px}
.footer-brand .footer-logo span{font-size:20px;font-weight:700;color:#FF6B9D}
.footer-brand p{font-size:14px;line-height:1.8;color:#999}
.footer-col h5{font-size:16px;color:#fff;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h5::after{content:"";position:absolute;bottom:0;left:0;width:30px;height:3px;background:#FF6B9D;border-radius:2px}
.footer-col a{display:block;font-size:14px;color:#999;padding:5px 0;transition:color .3s}
.footer-col a:hover{color:#FF6B9D}
.footer-bottom{text-align:center;padding:24px 0;font-size:13px;color:#777}
.footer-bottom a{color:#FF6B9D}

/* === 面包屑 === */
.breadcrumb{padding:16px 0;font-size:14px;color:#999}
.breadcrumb a{color:#FF6B9D}
.breadcrumb span{margin:0 8px;color:#ccc}

/* === 内页通用 === */
.page-hero{background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;padding:60px 0;text-align:center}
.page-hero h1{font-size:36px;margin-bottom:10px}
.page-hero p{font-size:16px;opacity:.9}
.inner-content{padding:60px 0}

/* === How-To指南 === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.howto-step{background:#fff;border-radius:16px;padding:30px 20px;text-align:center;border:1px solid #FFE8EF;position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-16px;left:50%;transform:translateX(-50%);width:32px;height:32px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.howto-step h4{margin-top:10px;margin-bottom:8px;font-size:16px}
.howto-step p{font-size:13px;color:#666}

/* === 响应式 === */
@media(max-width:1024px){
  .video-grid,.media-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid,.community-grid{grid-template-columns:repeat(2,1fr)}
  .ai-features{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .header-inner{flex-wrap:wrap;height:auto;padding:12px 0}
  .main-nav{display:none;width:100%;flex-direction:column;padding:10px 0}
  .main-nav.show{display:flex}
  .mobile-toggle{display:flex}
  .search-box{width:100%;margin:10px 0 0}
  .search-box input{width:100%}
  .search-box input:focus{width:100%}
  .hero-section{height:400px}
  .hero-content h1{font-size:28px}
  .hero-content p{font-size:16px}
  .video-grid,.media-grid,.review-grid{grid-template-columns:1fr}
  .expert-grid,.community-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .section-title h2{font-size:24px}
  .section-block{padding:50px 0}
  .howto-steps{grid-template-columns:1fr}
  .partner-wall .partner-item{width:120px;height:60px}
}

/* === 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 === */
img[data-src]{background:#f0f0f0;min-height:100px}

/* === 滚动条美化 === */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#FFF5F7}
::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#FF6B9D,#C44569);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:#C44569}