/* ========================================
   蜜桃视频1.7.c版 - 全站样式表
   域名：158759.cn
   ======================================== */

/* CSS Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:#333;background:#fff;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit;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}

/* ======== Header ======== */
.site-header{background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.logo-link{display:flex;align-items:center;gap:8px}
.logo-link img{height:42px;width:auto}
.logo-text{font-size:20px;font-weight:700;color:#ff6b81}
.main-nav ul{display:flex;gap:28px}
.main-nav a{font-size:15px;font-weight:500;color:#444;padding:6px 0;position:relative;transition:color .3s}
.main-nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:#ff6b81;transition:width .3s}
.main-nav a:hover,.main-nav a.active{color:#ff6b81}
.main-nav a:hover::after,.main-nav a.active::after{width:100%}
.mobile-menu-btn{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:#333}

/* ======== Search Bar ======== */
.search-bar{background:linear-gradient(135deg,#ff6b81 0%,#ff8e9e 100%);padding:14px 0}
.search-bar .container{display:flex;justify-content:center}
.search-form{display:flex;max-width:580px;width:100%;background:#fff;border-radius:30px;overflow:hidden;box-shadow:0 4px 15px rgba(255,107,129,.25)}
.search-form input{flex:1;border:none;padding:12px 22px;font-size:15px;outline:none;background:transparent}
.search-form button{background:#ff6b81;color:#fff;border:none;padding:0 24px;cursor:pointer;font-size:15px;transition:background .3s}
.search-form button:hover{background:#e5566c}

/* ======== Hero Banner ======== */
.hero-banner{position:relative;overflow:hidden;height:420px}
.hero-slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;transition:opacity .8s}
.hero-slide.active{opacity:1}
.hero-slide img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(to right,rgba(0,0,0,.55) 0%,transparent 70%);display:flex;align-items:center;padding:0 60px}
.hero-text{color:#fff;max-width:520px}
.hero-text h1{font-size:32px;font-weight:700;margin-bottom:12px;line-height:1.3}
.hero-text p{font-size:16px;opacity:.9;margin-bottom:20px;line-height:1.6}
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:#ff6b81;color:#fff;padding:12px 28px;border-radius:30px;font-size:15px;font-weight:600;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{background:#e5566c;transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,107,129,.4);color:#fff}
.hero-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:10px}
.hero-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:background .3s}
.hero-dots span.active{background:#ff6b81}

/* ======== Section Common ======== */
.section{padding:50px 0}
.section-alt{background:#faf5f7}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:28px;font-weight:700;color:#222;margin-bottom:8px}
.section-title p{font-size:15px;color:#888}
.section-title h2 span{color:#ff6b81}

/* ======== Video Card Grid ======== */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{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}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(0,0,0,.12)}
.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%);width:56px;height:56px;background:rgba(255,107,129,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s,transform .3s}
.play-btn::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card:hover .play-btn{opacity:1;transform:translate(-50%,-50%) scale(1.1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:12px}
.video-info{padding:14px}
.video-info h3{font-size:15px;font-weight:600;color:#222;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:#999}
.video-meta span{display:flex;align-items:center;gap:4px}

/* ======== Category Tabs ======== */
.category-tabs{display:flex;justify-content:center;gap:12px;margin-bottom:30px;flex-wrap:wrap}
.category-tabs .tab{padding:8px 22px;border-radius:20px;font-size:14px;color:#666;background:#f5f5f5;cursor:pointer;transition:all .3s;border:none}
.category-tabs .tab.active,.category-tabs .tab:hover{background:#ff6b81;color:#fff}

/* ======== Feature Cards ======== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border-radius:12px;padding:30px 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,#ff6b81,#ff8e9e);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:8px;color:#222}
.feature-card p{font-size:14px;color:#777;line-height:1.6}

/* ======== Expert Section ======== */
.expert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.06);text-align:center;padding:30px 20px;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:3px solid #ff6b81}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h3{font-size:17px;font-weight:600;color:#222;margin-bottom:4px}
.expert-card .title{font-size:13px;color:#ff6b81;margin-bottom:10px}
.expert-card p{font-size:13px;color:#777;line-height:1.5;margin-bottom:14px}
.expert-btns{display:flex;gap:10px;justify-content:center}
.btn-sm{padding:6px 16px;border-radius:20px;font-size:13px;border:1px solid #ff6b81;color:#ff6b81;transition:all .3s;cursor:pointer;background:transparent}
.btn-sm:hover{background:#ff6b81;color:#fff}
.btn-sm.filled{background:#ff6b81;color:#fff}
.btn-sm.filled:hover{background:#e5566c}

/* ======== 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{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;cursor:pointer;font-weight:600;font-size:15px;color:#333;transition:background .3s}
.faq-question:hover{background:#fef0f2}
.faq-question .arrow{transition:transform .3s;font-size:18px;color:#ff6b81}
.faq-item.open .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s;padding:0 24px}
.faq-item.open .faq-answer{max-height:300px;padding:0 24px 18px}
.faq-answer p{font-size:14px;color:#666;line-height:1.7}

/* ======== Reviews ======== */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 16px rgba(0,0,0,.05)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:#ff6b81;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px}
.review-name{font-weight:600;font-size:15px;color:#222}
.review-date{font-size:12px;color:#999}
.review-stars{color:#ffc107;margin-bottom:8px;font-size:14px}
.review-text{font-size:14px;color:#555;line-height:1.7}

/* ======== Partner Logos ======== */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center;padding:20px 0}
.partner-logo{width:120px;height:60px;background:#f8f8f8;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;color:#999;font-weight:600;transition:all .3s}
.partner-logo:hover{background:#fef0f2;color:#ff6b81}

/* ======== Contact Section ======== */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;align-items:start}
.contact-info{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 16px rgba(0,0,0,.05)}
.contact-info h3{font-size:20px;font-weight:600;margin-bottom:16px;color:#222}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px;font-size:14px;color:#555}
.contact-item .icon{width:36px;height:36px;background:#fef0f2;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#ff6b81;font-size:16px;flex-shrink:0}
.qr-codes{display:flex;gap:20px;justify-content:center}
.qr-item{text-align:center}
.qr-item img{width:140px;height:140px;border-radius:8px;margin-bottom:8px}
.qr-item p{font-size:13px;color:#666}

/* ======== Social Share ======== */
.share-bar{display:flex;justify-content:center;gap:16px;padding:20px 0}
.share-btn{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;transition:transform .3s;cursor:pointer}
.share-btn:hover{transform:scale(1.15)}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#111}
.share-bilibili{background:#00a1d6}

/* ======== Footer ======== */
.site-footer{background:#1a1a2e;color:#ccc;padding:40px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-brand .logo-text{color:#ff6b81;font-size:22px;font-weight:700;margin-bottom:10px}
.footer-brand p{font-size:13px;color:#aaa;line-height:1.6}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col a{display:block;font-size:13px;color:#aaa;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:#ff6b81}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;text-align:center;font-size:13px;color:#888}
.footer-bottom a{color:#ff6b81}

/* ======== Breadcrumb ======== */
.breadcrumb{padding:14px 0;font-size:13px;color:#999}
.breadcrumb a{color:#666;transition:color .3s}
.breadcrumb a:hover{color:#ff6b81}
.breadcrumb span{margin:0 6px;color:#ccc}

/* ======== How-To Guide ======== */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.howto-step{text-align:center;padding:24px 16px;background:#fff;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.04)}
.step-number{width:48px;height:48px;background:linear-gradient(135deg,#ff6b81,#ff8e9e);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;font-weight:700;margin:0 auto 12px}
.howto-step h4{font-size:15px;font-weight:600;color:#222;margin-bottom:6px}
.howto-step p{font-size:13px;color:#777}

/* ======== Stats Bar ======== */
.stats-bar{background:linear-gradient(135deg,#ff6b81 0%,#ff8e9e 50%,#ffc3d0 100%);padding:40px 0;color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item .number{font-size:36px;font-weight:700;margin-bottom:4px}
.stat-item .label{font-size:14px;opacity:.9}

/* ======== Page Content ======== */
.page-hero{background:linear-gradient(135deg,#ff6b81,#ff8e9e);padding:50px 0;color:#fff;text-align:center}
.page-hero h1{font-size:32px;font-weight:700;margin-bottom:8px}
.page-hero p{font-size:16px;opacity:.9}
.page-content{padding:40px 0}

/* ======== 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)}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;width:100%;order:3}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:0}
  .main-nav a{display:block;padding:12px 0;border-bottom:1px solid #f0f0f0}
  .mobile-menu-btn{display:block}
  .hero-banner{height:280px}
  .hero-text h1{font-size:22px}
  .hero-overlay{padding:0 20px}
  .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}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .section-title h2{font-size:22px}
  .qr-codes{flex-direction:column;align-items:center}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
}

/* Lazy load placeholder */
img[loading="lazy"]{background:#f0f0f0}