/* ============================================
   糖心vlog - 原创样式表
   品牌色系：珊瑚粉 #FF6B8A / 玫瑰金 #E8A0BF / 深酒红 #8B2252 / 暖金 #D4A574
   ============================================ */

/* --- Reset & Base --- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#333;background:#FDFBF9;line-height:1.7}
a{color:#FF6B8A;text-decoration:none;transition:color .3s}
a:hover{color:#8B2252}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* --- Header / Navigation --- */
.site-header{background:linear-gradient(135deg,#FFF5F7 0%,#FFF0F3 100%);border-bottom:2px solid #FFD6E0;position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(255,107,138,.1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{height:48px;width:auto}
.site-logo span{font-size:1.4rem;font-weight:700;color:#8B2252;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{display:block;padding:12px 16px;color:#555;font-size:.95rem;font-weight:500;transition:all .3s;border-bottom:3px solid transparent}
.main-nav a:hover,.main-nav a.active{color:#FF6B8A;border-bottom-color:#FF6B8A}
.nav-toggle{display:none;background:none;border:none;font-size:1.5rem;color:#8B2252;cursor:pointer}

/* --- Search Bar --- */
.search-bar{background:#FFF0F3;padding:12px 0;border-bottom:1px solid #FFE0E8}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:560px;width:100%;border-radius:24px;overflow:hidden;box-shadow:0 2px 8px rgba(255,107,138,.12)}
.search-box input{flex:1;border:2px solid #FFD6E0;border-right:none;padding:10px 20px;font-size:.95rem;outline:none;border-radius:24px 0 0 24px;background:#fff}
.search-box input:focus{border-color:#FF6B8A}
.search-box button{background:linear-gradient(135deg,#FF6B8A,#E8A0BF);color:#fff;border:none;padding:10px 24px;font-size:.95rem;cursor:pointer;transition:opacity .3s}
.search-box button:hover{opacity:.85}

/* --- Hero Banner --- */
.hero{position:relative;height:480px;overflow:hidden;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.55)}
.hero-content{position:relative;z-index:2;max-width:700px;padding:0 20px}
.hero h1{font-size:2.6rem;font-weight:800;margin-bottom:16px;text-shadow:0 2px 12px rgba(0,0,0,.4);line-height:1.3}
.hero p{font-size:1.15rem;margin-bottom:24px;text-shadow:0 1px 6px rgba(0,0,0,.3);opacity:.95}
.hero .btn-primary{display:inline-block;background:linear-gradient(135deg,#FF6B8A,#E8A0BF);color:#fff;padding:14px 36px;border-radius:30px;font-size:1.05rem;font-weight:600;transition:transform .3s,box-shadow .3s;box-shadow:0 4px 16px rgba(255,107,138,.35)}
.hero .btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(255,107,138,.45)}

/* --- Section Common --- */
.section{padding:60px 0}
.section-alt{background:#FFF5F7}
.section-dark{background:linear-gradient(135deg,#2D1B30 0%,#1A0F1E 100%);color:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:1.9rem;font-weight:700;color:#8B2252;position:relative;display:inline-block;padding-bottom:12px}
.section-dark .section-title h2{color:#FFD6E0}
.section-title h2::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,#FF6B8A,#E8A0BF);border-radius:2px}
.section-title p{color:#888;margin-top:10px;font-size:1rem}
.section-dark .section-title p{color:#ccc}

/* --- Video Card Grid --- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{display:block;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s;cursor:pointer;color:inherit;text-decoration:none}
a.video-card:hover{color:inherit;text-decoration:none}
.video-card:hover{transform:translateY(-6px);box-shadow:0 8px 32px rgba(255,107,138,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.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(1.06)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(255,107,138,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.play-btn::after{content:"";width:0;height:0;border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-card:hover .play-btn{opacity:1}
.video-info{padding:14px 16px}
.video-info h3{font-size:.95rem;font-weight:600;color:#333;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:.8rem;color:#999}
.video-meta span{display:flex;align-items:center;gap:3px}
.video-tag{display:inline-block;background:#FFF0F3;color:#FF6B8A;font-size:.75rem;padding:2px 8px;border-radius:10px;margin-top:6px}

/* --- Feature Modules --- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:#fff;border-radius:14px;padding:32px 24px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.05);transition:transform .3s}
.feature-card:hover{transform:translateY(-4px)}
.feature-icon{width:64px;height:64px;margin:0 auto 16px;background:linear-gradient(135deg,#FF6B8A,#E8A0BF);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff}
.feature-card h3{font-size:1.1rem;font-weight:600;color:#8B2252;margin-bottom:8px}
.feature-card p{font-size:.9rem;color:#666;line-height:1.6}

/* --- Expert Section --- */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.06);text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-avatar{width:120px;height:120px;border-radius:50%;object-fit:cover;margin:24px auto 12px;border:3px solid #FFD6E0}
.expert-card h3{font-size:1rem;font-weight:600;color:#333;margin-bottom:4px}
.expert-card .role{font-size:.85rem;color:#FF6B8A;margin-bottom:8px}
.expert-card p{font-size:.82rem;color:#888;padding:0 16px;margin-bottom:16px;line-height:1.5}
.expert-links{display:flex;justify-content:center;gap:10px;padding-bottom:20px}
.expert-links a{display:inline-block;padding:6px 14px;border-radius:18px;font-size:.8rem;font-weight:500;transition:all .3s}
.expert-links .btn-contact{background:#FF6B8A;color:#fff}
.expert-links .btn-contact:hover{background:#E8557A}
.expert-links .btn-work{border:1px solid #FF6B8A;color:#FF6B8A}
.expert-links .btn-work:hover{background:#FFF0F3}

/* --- FAQ Section --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.04);overflow:hidden}
.faq-question{padding:18px 24px;font-weight:600;color:#333;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-question:hover{background:#FFF5F7}
.faq-question::after{content:"+";font-size:1.3rem;color:#FF6B8A;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{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-answer{max-height:300px;padding:0 24px 18px}

/* --- Reviews --- */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 12px rgba(0,0,0,.05)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B8A,#E8A0BF);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:#999}
.review-stars{color:#FFB347;margin-bottom:8px;font-size:.9rem}
.review-text{font-size:.9rem;color:#555;line-height:1.7}

/* --- Partners --- */
.partner-wall{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:32px;padding:20px 0}
.partner-wall img{height:60px;opacity:.6;transition:opacity .3s;filter:grayscale(30%)}
.partner-wall img:hover{opacity:1;filter:none}

/* --- Contact Section --- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h3{font-size:1.2rem;color:#8B2252;margin-bottom:16px;font-weight:600}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px;font-size:.92rem;color:#555}
.contact-item strong{color:#333;min-width:70px}
.qrcode-group{display:flex;gap:24px;margin-top:20px}
.qrcode-box{text-align:center}
.qrcode-box img{width:140px;height:140px;border-radius:8px;border:2px solid #FFD6E0}
.qrcode-box p{font-size:.82rem;color:#888;margin-top:6px}

/* --- How To Join --- */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:24px}
.howto-step{text-align:center;padding:24px 16px}
.step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B8A,#E8A0BF);color:#fff;font-size:1.3rem;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.howto-step h4{font-size:1rem;color:#333;margin-bottom:6px}
.howto-step p{font-size:.85rem;color:#666}

/* --- Share Buttons --- */
.share-bar{display:flex;justify-content:center;gap:16px;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:.85rem;font-weight:500;color:#fff;transition:opacity .3s}
.share-btn:hover{opacity:.85;color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* --- Footer --- */
.site-footer{background:linear-gradient(135deg,#2D1B30 0%,#1A0F1E 100%);color:#ccc;padding:48px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{font-size:.88rem;line-height:1.7;margin-top:12px;color:#aaa}
.footer-col h4{font-size:1rem;color:#FFD6E0;margin-bottom:16px;font-weight:600}
.footer-col a{display:block;color:#aaa;font-size:.88rem;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:#FF6B8A}
.footer-qr{display:flex;gap:16px;margin-top:16px}
.footer-qr img{width:100px;height:100px;border-radius:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:.82rem;color:#888}
.footer-bottom a{color:#FF6B8A}

/* --- Breadcrumb --- */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#999}
.breadcrumb a{color:#FF6B8A}
.breadcrumb span{margin:0 6px;color:#ccc}

/* --- Inner Page --- */
.page-hero{background:linear-gradient(135deg,#FFF5F7,#FFE8EE);padding:48px 0;text-align:center}
.page-hero h1{font-size:2rem;color:#8B2252;font-weight:700;margin-bottom:8px}
.page-hero p{color:#888;font-size:1rem}
.content-area{padding:48px 0}
.content-area h2{font-size:1.5rem;color:#8B2252;margin-bottom:16px;font-weight:600}
.content-area h3{font-size:1.2rem;color:#333;margin:24px 0 12px;font-weight:600}
.content-area p{margin-bottom:16px;font-size:.95rem;color:#555;line-height:1.8}

/* --- Responsive --- */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .feature-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)}
}
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;width:100%;flex-direction:column;background:#FFF5F7;border-top:1px solid #FFD6E0}
  .main-nav.open{display:flex}
  .nav-toggle{display:block}
  .hero{height:360px}
  .hero h1{font-size:1.8rem}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .section{padding:40px 0}
}
/* --- EEAT Trust Badges --- */
.trust-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:24px;padding:20px 0}
.trust-badge{display:flex;align-items:center;gap:8px;background:#fff;padding:10px 18px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.05);font-size:.88rem;color:#555}
.trust-badge .badge-icon{font-size:1.3rem}

/* --- Stats Counter --- */
.stats-bar{display:flex;justify-content:center;flex-wrap:wrap;gap:40px;padding:32px 0}
.stat-item{text-align:center}
.stat-num{font-size:2rem;font-weight:800;color:#FF6B8A;display:block}
.stat-label{font-size:.88rem;color:#888;margin-top:4px}

@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .hero{height:280px}
  .hero h1{font-size:1.4rem}
}