/* ============================================
   糖心vlog - 原创样式表
   配色: 珊瑚粉 #FF6B81 / 暖粉 #FFB6C1 / 深玫 #C44569 / 浅灰 #F8F9FA
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#333;background:#FFFAFA;line-height:1.7}
a{color:#C44569;text-decoration:none;transition:color .3s}
a:hover{color:#FF6B81}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 隐藏干扰标签 === */
.noise-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}

/* === 头部导航 === */
.site-header{background:linear-gradient(135deg,#C44569 0%,#FF6B81 50%,#FFB6C1 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 15px rgba(196,69,105,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{width:42px;height:42px;border-radius:50%;border:2px solid rgba(255,255,255,.6)}
.site-logo span{font-size:1.4rem;font-weight:700;color:#fff;letter-spacing:1px}
.main-nav{display:flex;gap:6px}
.main-nav a{color:rgba(255,255,255,.9);padding:8px 14px;border-radius:20px;font-size:.9rem;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:rgba(255,255,255,.25);color:#fff}
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* === 搜索栏 === */
.search-bar{background:rgba(196,69,105,.08);padding:14px 0;border-bottom:1px solid rgba(196,69,105,.1)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;width:100%;max-width:580px;border-radius:25px;overflow:hidden;box-shadow:0 2px 12px rgba(196,69,105,.15)}
.search-box input{flex:1;padding:12px 22px;border:2px solid #FFB6C1;border-right:none;border-radius:25px 0 0 25px;font-size:.95rem;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#FF6B81}
.search-box button{padding:12px 28px;background:linear-gradient(135deg,#FF6B81,#C44569);color:#fff;border:none;cursor:pointer;font-size:.95rem;transition:opacity .3s}
.search-box button:hover{opacity:.85}

/* === Banner === */
.hero-banner{position:relative;height:520px;overflow:hidden;background:#2d1b2e}
.hero-banner img{width:100%;height:100%;object-fit:cover;opacity:.7}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;background:linear-gradient(to bottom,rgba(196,69,105,.3),rgba(45,27,46,.7));padding:20px}
.hero-overlay h1{font-size:2.8rem;color:#fff;text-shadow:0 3px 20px rgba(0,0,0,.4);margin-bottom:12px}
.hero-overlay p{font-size:1.15rem;color:rgba(255,255,255,.92);max-width:650px;line-height:1.8}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#999}
.breadcrumb a{color:#C44569}
.breadcrumb span{margin:0 6px;color:#ccc}

/* === 通用区块 === */
.section{padding:55px 0}
.section-alt{background:#FFF5F6}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:1.9rem;color:#C44569;position:relative;display:inline-block;padding-bottom:12px}
.section-title h2::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,#FF6B81,#FFB6C1);border-radius:2px}
.section-title p{color:#888;margin-top:10px;font-size:.95rem}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.video-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 4px 20px rgba(196,69,105,.08);transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(196,69,105,.18)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:60px;height:60px;background:rgba(196,69,105,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s;z-index:2}
.play-btn::after{content:"";border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.78rem;z-index:2}
.video-stats{position:absolute;bottom:8px;left:8px;display:flex;gap:10px;z-index:2}
.video-stats span{background:rgba(0,0,0,.65);color:#fff;padding:2px 7px;border-radius:4px;font-size:.75rem}
.video-info{padding:16px}
.video-info h3{font-size:1.05rem;color:#333;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info .meta{display:flex;justify-content:space-between;align-items:center;font-size:.82rem;color:#999}
.video-info .tag{display:inline-block;background:#FFF0F2;color:#C44569;padding:2px 10px;border-radius:12px;font-size:.78rem;margin-right:5px}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:14px;padding:28px;text-align:center;box-shadow:0 4px 20px rgba(196,69,105,.08);transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;object-fit:cover;border:3px solid #FFB6C1}
.expert-card h4{font-size:1.1rem;color:#C44569;margin-bottom:4px}
.expert-card .role{color:#999;font-size:.85rem;margin-bottom:10px}
.expert-card p{font-size:.88rem;color:#666;line-height:1.6}
.expert-card .btn-group{margin-top:14px;display:flex;gap:8px;justify-content:center}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;margin-bottom:12px;box-shadow:0 2px 10px rgba(196,69,105,.06);overflow:hidden}
.faq-q{padding:18px 24px;font-weight:600;color:#C44569;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-q:hover{background:#FFF5F6}
.faq-q::after{content:"+";font-size:1.3rem;color:#FF6B81;transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;color:#666;font-size:.92rem;line-height:1.7}
.faq-item.active .faq-a{max-height:300px;padding:0 24px 18px}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:20px}
.review-card{background:#fff;border-radius:14px;padding:24px;box-shadow:0 4px 15px rgba(196,69,105,.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,#FF6B81,#FFB6C1);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-name{font-weight:600;color:#333}
.review-date{font-size:.8rem;color:#bbb}
.review-stars{color:#FF6B81;margin-bottom:8px;font-size:.9rem}
.review-text{color:#555;font-size:.9rem;line-height:1.7}

/* === 合作品牌 === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall img{height:50px;opacity:.5;transition:opacity .3s;filter:grayscale(100%)}
.partner-wall img:hover{opacity:1;filter:none}

/* === 按钮 === */
.btn{display:inline-block;padding:10px 24px;border-radius:25px;font-size:.9rem;transition:all .3s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,#FF6B81,#C44569);color:#fff;box-shadow:0 4px 15px rgba(196,69,105,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(196,69,105,.4);color:#fff}
.btn-outline{border:2px solid #FF6B81;color:#FF6B81;background:transparent}
.btn-outline:hover{background:#FF6B81;color:#fff}

/* === 页脚 === */
.site-footer{background:linear-gradient(135deg,#2d1b2e 0%,#4a2545 100%);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:#FFB6C1;font-size:1.05rem;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;bottom:0;left:0;width:30px;height:2px;background:#FF6B81}
.footer-col a{display:block;color:rgba(255,255,255,.6);padding:4px 0;font-size:.88rem;transition:color .3s}
.footer-col a:hover{color:#FFB6C1}
.footer-col p{font-size:.88rem;line-height:1.7}
.footer-qr{display:flex;gap:20px;margin-top:12px}
.footer-qr img{width:100px;height:100px;border-radius:8px;border:2px solid rgba(255,255,255,.15)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:.82rem}
.footer-share{display:flex;gap:12px;justify-content:center;margin-bottom:12px}
.footer-share a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#FFB6C1;transition:background .3s}
.footer-share a:hover{background:rgba(255,182,193,.3)}

/* === 内页视频播放 === */
.video-player-wrap{max-width:900px;margin:0 auto;background:#000;border-radius:14px;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.3)}
.video-player-wrap video{width:100%;display:block}
.video-detail{max-width:900px;margin:20px auto;padding:24px;background:#fff;border-radius:14px;box-shadow:0 4px 15px rgba(196,69,105,.08)}
.video-detail h2{color:#C44569;margin-bottom:10px}
.video-detail .meta-row{display:flex;gap:20px;color:#999;font-size:.88rem;margin-bottom:14px}

/* === How-To指南 === */
.howto-steps{max-width:700px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:28px;align-items:flex-start}
.step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B81,#C44569);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;flex-shrink:0}
.step-content h4{color:#C44569;margin-bottom:4px}
.step-content p{color:#666;font-size:.9rem}

/* === 社区模块 === */
.community-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.feature-card{background:#fff;border-radius:14px;padding:28px;text-align:center;box-shadow:0 4px 15px rgba(196,69,105,.06);transition:transform .3s}
.feature-card:hover{transform:translateY(-4px)}
.feature-icon{width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,#FFF0F2,#FFE0E5);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:1.5rem}
.feature-card h4{color:#C44569;margin-bottom:8px}
.feature-card p{color:#777;font-size:.88rem}

/* === AI赋能模块 === */
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.ai-card{background:linear-gradient(135deg,#FFF5F6,#fff);border:1px solid rgba(196,69,105,.1);border-radius:14px;padding:28px;transition:box-shadow .3s}
.ai-card:hover{box-shadow:0 8px 25px rgba(196,69,105,.12)}
.ai-card h4{color:#C44569;margin-bottom:8px;font-size:1.05rem}
.ai-card p{color:#666;font-size:.9rem;line-height:1.6}

/* === 响应式 === */
@media(max-width:768px){
    .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:linear-gradient(135deg,#C44569,#FF6B81);flex-direction:column;padding:16px;gap:4px}
    .main-nav.show{display:flex}
    .mobile-menu-btn{display:block}
    .hero-banner{height:360px}
    .hero-overlay h1{font-size:1.8rem}
    .hero-overlay p{font-size:.95rem}
    .video-grid{grid-template-columns:1fr}
    .section{padding:35px 0}
    .section-title h2{font-size:1.5rem}
    .footer-grid{grid-template-columns:1fr 1fr}
    .review-grid{grid-template-columns:1fr}
    .header-inner{padding:10px 16px}
}
@media(max-width:480px){
    .footer-grid{grid-template-columns:1fr}
    .search-box{flex-direction:column;border-radius:12px}
    .search-box input{border-radius:12px 12px 0 0;border-right:2px solid #FFB6C1;border-bottom:none}
    .search-box button{border-radius:0 0 12px 12px}
    .video-grid{grid-template-columns:1fr}
    .expert-grid{grid-template-columns:1fr}
}