/* ============================================
   里番网 - 原创样式表
   品牌：里番网 | 域名：859995.cn
   配色：里番网粉 #FF6B9D / 深玫红 #C44569 / 暖金 #FFD93D
   ============================================ */

/* --- 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:#0D0D1A;color:#E0E0E0;line-height:1.7;overflow-x:hidden}
a{color:#FF6B9D;text-decoration:none;transition:color .3s}
a:hover{color:#FFD93D}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{color:#fff;font-weight:700;line-height:1.3}

/* --- Container --- */
.container{max-width:1280px;margin:0 auto;padding:0 20px}
.section-padding{padding:60px 0}

/* --- Header / Navigation --- */
.site-header{background:rgba(13,13,26,.95);backdrop-filter:blur(12px);position:fixed;top:0;left:0;width:100%;z-index:1000;border-bottom:1px solid rgba(255,107,157,.15);transition:background .3s}
.site-header.scrolled{background:rgba(13,13,26,.98)}
.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:1.4rem;font-weight:800;background:linear-gradient(135deg,#FF6B9D,#FFD93D);-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;border-radius:8px;font-size:.9rem;color:#ccc;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(255,107,157,.15)}
.mobile-toggle{display:none;background:none;border:none;color:#FF6B9D;font-size:1.5rem;cursor:pointer}

/* --- Search Bar --- */
.search-bar-wrap{background:linear-gradient(135deg,rgba(255,107,157,.08),rgba(255,217,61,.05));padding:12px 0;border-bottom:1px solid rgba(255,107,157,.1)}
.search-bar-wrap .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 18px;border:2px solid rgba(255,107,157,.3);border-right:none;border-radius:25px 0 0 25px;background:rgba(26,26,46,.8);color:#fff;font-size:.95rem;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#FF6B9D}
.search-box input::placeholder{color:#888}
.search-box button{padding:10px 24px;border:2px solid #FF6B9D;border-radius:0 25px 25px 0;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;font-size:.95rem;cursor:pointer;transition:all .3s;white-space:nowrap}
.search-box button:hover{background:linear-gradient(135deg,#C44569,#FF6B9D)}

/* --- Hero Banner --- */
.hero-section{position:relative;margin-top:68px;overflow:hidden;height:520px}
.hero-section img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to bottom,rgba(13,13,26,.3),rgba(13,13,26,.85));display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:20px}
.hero-overlay h1{font-size:2.8rem;margin-bottom:12px;text-shadow:0 2px 20px rgba(255,107,157,.4)}
.hero-overlay h1 span{background:linear-gradient(135deg,#FF6B9D,#FFD93D);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-overlay p{font-size:1.15rem;color:#ccc;max-width:700px;margin-bottom:24px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.btn-primary{display:inline-block;padding:12px 32px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;border-radius:30px;font-weight:600;font-size:1rem;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,107,157,.4);color:#fff}
.btn-outline{display:inline-block;padding:12px 32px;border:2px solid #FF6B9D;color:#FF6B9D;border-radius:30px;font-weight:600;font-size:1rem;transition:all .3s;background:transparent;cursor:pointer}
.btn-outline:hover{background:rgba(255,107,157,.1);transform:translateY(-2px);color:#FF6B9D}

/* --- Section Titles --- */
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:2rem;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#FF6B9D,#FFD93D);margin:12px auto 0;border-radius:2px}
.section-title p{color:#999;font-size:1rem;margin-top:8px}

/* --- Video Card Grid --- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{background:#1A1A2E;border-radius:14px;overflow:hidden;transition:all .35s;position:relative;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(255,107,157,.2)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:3/4}
.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{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.4);opacity:0;transition:opacity .3s}
.video-card:hover .play-btn{opacity:1}
.play-btn span{width:56px;height:56px;background:rgba(255,107,157,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0}
.play-btn span::after{content:'';display:block;width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.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:12px;color:#888;font-size:.8rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{position:absolute;top:10px;left:10px;background:linear-gradient(135deg,#FF6B9D,#C44569);color:#fff;padding:3px 10px;border-radius:12px;font-size:.75rem;font-weight:600;z-index:2}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem;z-index:2}

/* --- Wide Video Card --- */
.video-grid-wide{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.video-card-wide .video-thumb{aspect-ratio:16/9}

/* --- Feature Modules --- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:linear-gradient(145deg,#1A1A2E,#16162B);border:1px solid rgba(255,107,157,.1);border-radius:16px;padding:32px 24px;text-align:center;transition:all .35s}
.feature-card:hover{border-color:rgba(255,107,157,.3);transform:translateY(-4px);box-shadow:0 8px 30px rgba(255,107,157,.1)}
.feature-icon{width:64px;height:64px;margin:0 auto 18px;background:linear-gradient(135deg,rgba(255,107,157,.2),rgba(196,69,105,.2));border-radius:16px;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{color:#999;font-size:.9rem;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;text-align:center;padding:28px 20px;border:1px solid rgba(255,107,157,.08);transition:all .35s}
.expert-card:hover{border-color:rgba(255,107,157,.25);transform:translateY(-4px)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:3px solid rgba(255,107,157,.3)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1rem;margin-bottom:4px}
.expert-card .role{color:#FF6B9D;font-size:.85rem;margin-bottom:10px}
.expert-card p{color:#999;font-size:.85rem;line-height:1.5;margin-bottom:14px}
.expert-links{display:flex;gap:8px;justify-content:center}
.expert-links a{padding:6px 14px;border-radius:20px;font-size:.8rem;border:1px solid rgba(255,107,157,.3);color:#FF6B9D;transition:all .3s}
.expert-links a:hover{background:#FF6B9D;color:#fff}

/* --- Brand Wall --- */
.brand-wall{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;align-items:center}
.brand-wall .brand-item{background:rgba(26,26,46,.8);border:1px solid rgba(255,107,157,.1);border-radius:12px;padding:16px 28px;color:#999;font-size:.95rem;font-weight:600;transition:all .3s}
.brand-wall .brand-item:hover{border-color:#FF6B9D;color:#FF6B9D}

/* --- Reviews --- */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#1A1A2E;border-radius:14px;padding:28px;border:1px solid rgba(255,107,157,.08);transition:all .3s}
.review-card:hover{border-color:rgba(255,107,157,.2)}
.review-header{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.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:1.1rem}
.review-name{font-weight:600;color:#fff;font-size:.95rem}
.review-date{color:#888;font-size:.8rem}
.review-stars{color:#FFD93D;margin-bottom:10px;font-size:.9rem}
.review-text{color:#bbb;font-size:.9rem;line-height:1.7}

/* --- FAQ --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#1A1A2E;border-radius:12px;margin-bottom:12px;border:1px solid rgba(255,107,157,.08);overflow:hidden}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#fff;transition:background .3s}
.faq-question:hover{background:rgba(255,107,157,.05)}
.faq-question .arrow{transition:transform .3s;color:#FF6B9D;font-size:1.2rem}
.faq-item.active .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 18px}
.faq-answer p{color:#999;font-size:.9rem;line-height:1.7}

/* --- Contact Section --- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.contact-card{background:#1A1A2E;border-radius:14px;padding:28px;text-align:center;border:1px solid rgba(255,107,157,.08)}
.contact-card h4{margin-bottom:14px;color:#FF6B9D}
.contact-card p{color:#bbb;font-size:.9rem;margin-bottom:6px}
.contact-card img{max-width:160px;margin:10px auto 0;border-radius:8px}

/* --- How-To Guide --- */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:32px}
.howto-step{text-align:center;padding:24px 16px}
.step-num{width:48px;height:48px;background:linear-gradient(135deg,#FF6B9D,#C44569);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:1.2rem;margin:0 auto 14px}
.howto-step h4{margin-bottom:8px;font-size:1rem}
.howto-step p{color:#999;font-size:.85rem}

/* --- Social Share --- */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-btn{padding:10px 20px;border-radius:25px;font-size:.85rem;font-weight:600;color:#fff;transition:all .3s;cursor:pointer;border:none}
.share-btn:hover{transform:translateY(-2px)}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* --- Footer --- */
.site-footer{background:#0A0A16;padding:48px 0 24px;border-top:1px solid rgba(255,107,157,.1)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{color:#999;font-size:.9rem;margin-top:12px;line-height:1.6}
.footer-col h5{color:#fff;font-size:1rem;margin-bottom:16px;position:relative;padding-bottom:8px}
.footer-col h5::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:#FF6B9D}
.footer-col a{display:block;color:#999;font-size:.88rem;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:#FF6B9D}
.footer-qr{display:flex;gap:16px;margin-top:12px}
.footer-qr img{width:100px;border-radius:6px}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid rgba(255,107,157,.08);color:#666;font-size:.85rem}
.footer-bottom a{color:#FF6B9D}

/* --- Breadcrumb --- */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#888}
.breadcrumb a{color:#FF6B9D}
.breadcrumb span{margin:0 8px;color:#555}

/* --- Inner Page Hero --- */
.inner-hero{margin-top:68px;padding:60px 0;background:linear-gradient(135deg,rgba(255,107,157,.08),rgba(26,26,46,.95));text-align:center}
.inner-hero h1{font-size:2.2rem;margin-bottom:10px}
.inner-hero p{color:#999;font-size:1rem}

/* --- Article Content --- */
.article-content{max-width:900px;margin:0 auto;padding:40px 20px}
.article-content h2{font-size:1.6rem;margin:32px 0 16px;color:#FF6B9D}
.article-content h3{font-size:1.3rem;margin:24px 0 12px}
.article-content p{margin-bottom:16px;color:#ccc;font-size:1rem;line-height:1.8}

/* --- Tags --- */
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.tag{padding:4px 14px;background:rgba(255,107,157,.1);border:1px solid rgba(255,107,157,.2);border-radius:20px;color:#FF6B9D;font-size:.8rem;transition:all .3s}
.tag:hover{background:rgba(255,107,157,.2)}

/* --- Stats Bar --- */
.stats-bar{display:flex;justify-content:center;gap:48px;padding:40px 0;flex-wrap:wrap}
.stat-item{text-align:center}
.stat-num{font-size:2.4rem;font-weight:800;background:linear-gradient(135deg,#FF6B9D,#FFD93D);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{color:#999;font-size:.9rem;margin-top:4px}

/* --- 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:repeat(2,1fr)}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .video-grid-wide{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .hero-section{height:380px}
  .hero-overlay h1{font-size:1.8rem}
  .main-nav{display:none;position:absolute;top:68px;left:0;width:100%;background:rgba(13,13,26,.98);flex-direction:column;padding:16px;border-bottom:1px solid rgba(255,107,157,.15)}
  .main-nav.open{display:flex}
  .mobile-toggle{display:block}
  .header-inner{padding:0 16px}
  .stats-bar{gap:24px}
  .stat-num{font-size:1.8rem}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .hero-section{height:300px}
  .hero-overlay h1{font-size:1.5rem}
  .section-title h2{font-size:1.5rem}
}

/* --- Lazy Load --- */
img[data-src]{opacity:0;transition:opacity .5s}
img.loaded{opacity:1}

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

/* --- Scrollbar --- */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#0D0D1A}
::-webkit-scrollbar-thumb{background:linear-gradient(#FF6B9D,#C44569);border-radius:4px}

/* --- Hero Video Background --- */
.hero-video-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:16px}
.hero-tags span{padding:4px 14px;background:rgba(255,107,157,.15);border:1px solid rgba(255,107,157,.25);border-radius:20px;color:#FF6B9D;font-size:.8rem}

/* --- Card Video (H5 Video in Cards) --- */
.card-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;display:none}

/* --- Nav Icon & Logo --- */
.nav-icon{width:36px;height:36px;border-radius:8px;flex-shrink:0}
.nav-logo{height:42px;width:auto;max-width:120px;flex-shrink:0}

/* --- Breadcrumb Bar --- */
.breadcrumb-bar{background:rgba(26,26,46,.6);border-bottom:1px solid rgba(255,107,157,.06);padding:0}
.breadcrumb-bar .breadcrumb{padding:10px 0;font-size:.85rem;color:#888}
.breadcrumb .sep{margin:0 8px;color:#555}

/* --- Section Alt Variants --- */
.section-alt{background:linear-gradient(180deg,rgba(255,107,157,.04),transparent)}
.section-alt-gold{background:linear-gradient(180deg,rgba(255,217,61,.04),transparent)}

/* --- Tag List Center --- */
.tag-list-center{justify-content:center;margin-top:32px}

/* --- Share Section --- */
.share-section{padding:32px 0;background:rgba(26,26,46,.5)}
.share-center{text-align:center}
.share-center h5{margin-bottom:12px;color:#ccc}

/* --- Stats Section --- */
.stats-section{background:linear-gradient(135deg,rgba(255,107,157,.06),rgba(255,217,61,.04));border-bottom:1px solid rgba(255,107,157,.08)}
.stats-update{text-align:center;color:#666;font-size:.8rem;margin-top:8px}

/* --- Article Update Time --- */
.article-update{color:#666;font-size:.85rem;font-style:italic;margin-top:24px;padding-top:16px;border-top:1px solid rgba(255,107,157,.08)}

/* --- QR Gap --- */
.qr-gap{margin-top:16px}

/* --- Update Time --- */
.update-time{color:#888;font-size:.8rem;margin-top:6px}

/* --- Inner Hero Breadcrumb Fix --- */
.inner-hero .breadcrumb{text-align:left;margin-bottom:16px}
.inner-hero nav.breadcrumb{display:block}

/* --- Search Bar Top Margin Fix --- */
.search-bar-wrap{margin-top:68px}
.hero-section{margin-top:0}