/* ============================================
   福利姬 - 原创样式表
   品牌色系：糖心粉 #FF2D55 / 暗夜蓝 #1A1A2E / 甜蜜金 #FFB800
   ============================================ */

/* --- CSS 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;background:#0F0F1A;color:#E0E0F0;line-height:1.7;overflow-x:hidden}
a{color:#FF6B8A;text-decoration:none;transition:color .3s}
a:hover{color:#FFB800}
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{max-width:1200px;margin:0 auto;padding:0 20px}
.section-padding{padding:70px 0}

/* --- Header / Navigation --- */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(15,15,26,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,45,85,.15);transition:background .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-text{font-size:1.35rem;font-weight:800;background:linear-gradient(135deg,#FF2D55,#FFB800);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 16px;font-size:.9rem;color:#B0B0C0;border-radius:6px;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(255,45,85,.15)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#fff;border-radius:2px;transition:all .3s}

/* --- Search Bar --- */
.search-bar{background:linear-gradient(135deg,rgba(255,45,85,.08),rgba(255,184,0,.05));padding:16px 0;border-bottom:1px solid rgba(255,45,85,.1)}
.search-wrap{max-width:640px;margin:0 auto;position:relative}
.search-wrap input{width:100%;padding:12px 50px 12px 20px;border:2px solid rgba(255,45,85,.25);border-radius:30px;background:rgba(26,26,46,.8);color:#fff;font-size:.95rem;outline:none;transition:border-color .3s}
.search-wrap input:focus{border-color:#FF2D55}
.search-wrap input::placeholder{color:#666}
.search-btn{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:40px;height:40px;border:none;border-radius:50%;background:linear-gradient(135deg,#FF2D55,#FF6B8A);color:#fff;font-size:1.1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .2s}
.search-btn:hover{transform:translateY(-50%) scale(1.08)}

/* --- Hero Banner --- */
.hero-section{position:relative;min-height:520px;display:flex;align-items:center;margin-top:68px;overflow:hidden;background:#0F0F1A}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.45;transition:opacity .5s}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,15,26,.3) 0%,rgba(15,15,26,.85) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;width:100%;padding:60px 20px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(255,45,85,.3)}
.hero-content h1 .brand-highlight{background:linear-gradient(135deg,#FF2D55,#FFB800);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content p{font-size:1.15rem;color:#B0B0C0;max-width:680px;margin:0 auto 30px}
.hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:30px}
.hero-tags span{padding:6px 18px;border:1px solid rgba(255,45,85,.3);border-radius:20px;font-size:.85rem;color:#FF6B8A;background:rgba(255,45,85,.08)}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;background:linear-gradient(135deg,#FF2D55,#FF6B8A);color:#fff;border:none;border-radius:30px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;box-shadow:0 4px 20px rgba(255,45,85,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(255,45,85,.5);color:#fff}
.btn-outline{display:inline-flex;align-items:center;gap:8px;padding:14px 36px;border:2px solid rgba(255,184,0,.5);color:#FFB800;border-radius:30px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;background:transparent}
.btn-outline:hover{background:rgba(255,184,0,.1);border-color:#FFB800;color:#FFB800}

/* --- Section Headers --- */
.section-header{text-align:center;margin-bottom:50px}
.section-header h2{font-size:2rem;margin-bottom:12px}
.section-header h2 .accent{color:#FF2D55}
.section-header .subtitle{color:#888;font-size:1rem;max-width:600px;margin:0 auto}
.section-divider{width:60px;height:3px;background:linear-gradient(90deg,#FF2D55,#FFB800);margin:16px auto 0;border-radius:2px}

/* --- Video Card Grid --- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.video-card{position:relative;border-radius:12px;overflow:hidden;background:#1A1A2E;transition:transform .35s,box-shadow .35s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(255,45,85,.2)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.35);opacity:0;transition:opacity .35s}
.video-card:hover .play-btn-overlay{opacity:1}
.play-icon{width:56px;height:56px;border-radius:50%;background:rgba(255,45,85,.9);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(255,45,85,.5);transition:transform .2s}
.play-icon:hover{transform:scale(1.1)}
.play-icon::after{content:"";display:block;width:0;height:0;border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-info{padding:14px 16px}
.video-info h4{font-size:.95rem;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.video-meta{display:flex;gap:14px;font-size:.8rem;color:#777}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{position:absolute;top:10px;left:10px;padding:3px 10px;background:rgba(255,45,85,.85);color:#fff;font-size:.72rem;border-radius:4px;font-weight:600}
.video-duration{position:absolute;bottom:10px;right:10px;padding:2px 8px;background:rgba(0,0,0,.7);color:#fff;font-size:.75rem;border-radius:4px}

/* --- Feature Modules --- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:linear-gradient(145deg,#1A1A2E,#151528);border:1px solid rgba(255,45,85,.1);border-radius:16px;padding:32px 24px;text-align:center;transition:all .35s}
.feature-card:hover{border-color:rgba(255,45,85,.35);transform:translateY(-4px);box-shadow:0 8px 30px rgba(255,45,85,.12)}
.feature-icon{width:64px;height:64px;margin:0 auto 18px;border-radius:16px;background:linear-gradient(135deg,rgba(255,45,85,.15),rgba(255,184,0,.1));display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.feature-card h4{font-size:1.1rem;margin-bottom:10px}
.feature-card p{font-size:.88rem;color:#888;line-height:1.6}

/* --- Expert Section --- */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#1A1A2E;border-radius:16px;overflow:hidden;border:1px solid rgba(255,45,85,.08);transition:all .35s;text-align:center}
.expert-card:hover{border-color:rgba(255,45,85,.3);transform:translateY(-4px)}
.expert-avatar{width:100%;aspect-ratio:1;overflow:hidden}
.expert-avatar img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.expert-card:hover .expert-avatar img{transform:scale(1.05)}
.expert-info{padding:20px 16px}
.expert-info h4{font-size:1.05rem;margin-bottom:4px}
.expert-info .role{color:#FF6B8A;font-size:.85rem;margin-bottom:8px}
.expert-info p{font-size:.82rem;color:#777;margin-bottom:14px}
.expert-btns{display:flex;gap:8px;justify-content:center}
.expert-btns a{padding:6px 16px;border-radius:20px;font-size:.8rem;transition:all .3s}
.expert-btns .btn-sm-primary{background:linear-gradient(135deg,#FF2D55,#FF6B8A);color:#fff}
.expert-btns .btn-sm-outline{border:1px solid rgba(255,184,0,.4);color:#FFB800}
.expert-btns .btn-sm-outline:hover{background:rgba(255,184,0,.1)}

/* --- Partner Logo Wall --- */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-logo{width:140px;height:70px;background:rgba(26,26,46,.8);border:1px solid rgba(255,255,255,.08);border-radius:10px;display:flex;align-items:center;justify-content:center;padding:12px;transition:all .3s;color:#555;font-size:.85rem;font-weight:600}
.partner-logo:hover{border-color:rgba(255,45,85,.3);background:rgba(255,45,85,.05)}

/* --- FAQ Section --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid rgba(255,45,85,.1);border-radius:12px;margin-bottom:14px;overflow:hidden;background:#1A1A2E}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem;transition:background .3s}
.faq-question:hover{background:rgba(255,45,85,.05)}
.faq-question .arrow{transition:transform .3s;color:#FF2D55;font-size:1.2rem}
.faq-item.active .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:#999;font-size:.9rem;line-height:1.8}
.faq-item.active .faq-answer{padding:0 24px 18px;max-height:300px}

/* --- Reviews --- */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.review-card{background:linear-gradient(145deg,#1A1A2E,#151528);border:1px solid rgba(255,45,85,.08);border-radius:14px;padding:24px;transition:all .3s}
.review-card:hover{border-color:rgba(255,45,85,.2)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF2D55,#FFB800);display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:#fff;font-weight:700;flex-shrink:0}
.review-user h5{font-size:.95rem;margin-bottom:2px}
.review-user .date{font-size:.78rem;color:#666}
.review-stars{color:#FFB800;font-size:.85rem;margin-bottom:10px;letter-spacing:2px}
.review-text{font-size:.88rem;color:#999;line-height:1.7}

/* --- Contact Section --- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info-list{display:flex;flex-direction:column;gap:18px}
.contact-item{display:flex;align-items:flex-start;gap:14px;padding:16px;background:#1A1A2E;border-radius:12px;border:1px solid rgba(255,45,85,.08)}
.contact-item .icon{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,rgba(255,45,85,.15),rgba(255,184,0,.1));display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.contact-item .info h5{font-size:.9rem;margin-bottom:4px}
.contact-item .info p{font-size:.85rem;color:#888}
.contact-qr{display:flex;gap:24px;justify-content:center}
.qr-item{text-align:center}
.qr-item img{width:160px;height:160px;border-radius:10px;border:2px solid rgba(255,45,85,.15);margin-bottom:8px}
.qr-item p{font-size:.82rem;color:#888}

/* --- How-To Guide --- */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.step-card{text-align:center;padding:28px 18px;background:#1A1A2E;border-radius:14px;border:1px solid rgba(255,45,85,.08);position:relative}
.step-num{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#FF2D55,#FF6B8A);color:#fff;font-size:1.2rem;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.step-card h5{font-size:.95rem;margin-bottom:8px}
.step-card p{font-size:.82rem;color:#888}

/* --- Social Share --- */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-btn{padding:10px 22px;border-radius:24px;font-size:.85rem;font-weight:600;transition:all .3s;border:1px solid rgba(255,255,255,.1);color:#fff;cursor:pointer;background:rgba(26,26,46,.8)}
.share-btn:hover{transform:translateY(-2px)}
.share-btn.wechat{border-color:#07C160;color:#07C160}
.share-btn.wechat:hover{background:rgba(7,193,96,.1)}
.share-btn.weibo{border-color:#E6162D;color:#E6162D}
.share-btn.weibo:hover{background:rgba(230,22,45,.1)}
.share-btn.douyin{border-color:#FE2C55;color:#FE2C55}
.share-btn.douyin:hover{background:rgba(254,44,85,.1)}
.share-btn.bilibili{border-color:#00A1D6;color:#00A1D6}
.share-btn.bilibili:hover{background:rgba(0,161,214,.1)}

/* --- Footer --- */
.site-footer{background:#0A0A14;border-top:1px solid rgba(255,45,85,.1);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo-wrap{margin-bottom:14px}
.footer-brand p{font-size:.85rem;color:#666;line-height:1.7;margin-bottom:16px}
.footer-col h5{font-size:.95rem;margin-bottom:16px;color:#fff;position:relative;padding-bottom:10px}
.footer-col h5::after{content:"";position:absolute;bottom:0;left:0;width:30px;height:2px;background:#FF2D55;border-radius:1px}
.footer-col a{display:block;font-size:.85rem;color:#666;padding:5px 0;transition:color .3s}
.footer-col a:hover{color:#FF6B8A}
.footer-bottom{border-top:1px solid rgba(255,255,255,.05);padding:20px 0;text-align:center}
.footer-bottom p{font-size:.82rem;color:#555}
.footer-bottom .update-time{color:#FF6B8A;font-size:.8rem;margin-top:6px}

/* --- Breadcrumb --- */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#666}
.breadcrumb a{color:#888}
.breadcrumb a:hover{color:#FF6B8A}
.breadcrumb span{margin:0 8px;color:#444}

/* --- Inner Page Hero --- */
.page-hero{background:linear-gradient(135deg,#1A1A2E,#0F0F1A);padding:100px 0 50px;text-align:center;border-bottom:1px solid rgba(255,45,85,.1)}
.page-hero h1{font-size:2.2rem;margin-bottom:12px}
.page-hero p{color:#888;font-size:1rem}

/* --- Community Cards --- */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.community-card{background:#1A1A2E;border-radius:14px;overflow:hidden;border:1px solid rgba(255,45,85,.08);transition:all .35s}
.community-card:hover{border-color:rgba(255,45,85,.25);transform:translateY(-4px)}
.community-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.community-card .card-body{padding:18px}
.community-card h4{font-size:1rem;margin-bottom:8px}
.community-card p{font-size:.85rem;color:#888}

/* --- Lazy Load --- */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}

/* --- Animations --- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .6s ease forwards}

/* --- Scrollbar --- */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#0F0F1A}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#FF2D55,#FF6B8A);border-radius:4px}

/* --- Responsive --- */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .feature-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){
  .main-nav{position:fixed;top:68px;left:0;width:100%;background:rgba(15,15,26,.98);flex-direction:column;padding:20px;gap:4px;transform:translateY(-120%);transition:transform .35s;border-bottom:1px solid rgba(255,45,85,.15)}
  .main-nav.open{transform:translateY(0)}
  .nav-toggle{display:flex}
  .hero-content 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}
  .community-grid{grid-template-columns:1fr}
  .section-header h2{font-size:1.5rem}
  .container{padding:0 16px}
  .section-padding{padding:50px 0}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .hero-btns{flex-direction:column;align-items:center}
}