/* 探花传媒 - 主样式文件 | nzuanht.cn */
/* ===== CSS Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;color:#1a1a2e;background:#fff;line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .25s}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none}

/* ===== CSS Variables ===== */
:root{
  --primary:#c0392b;
  --primary-dark:#922b21;
  --primary-light:#e74c3c;
  --accent:#f39c12;
  --accent2:#8e44ad;
  --dark:#1a1a2e;
  --dark2:#16213e;
  --mid:#2c3e50;
  --light:#f8f9fa;
  --light2:#ecf0f1;
  --text:#333;
  --text-light:#666;
  --border:#e0e0e0;
  --shadow:0 4px 20px rgba(0,0,0,.1);
  --shadow-hover:0 8px 40px rgba(192,57,43,.2);
  --radius:12px;
  --radius-sm:6px;
  --transition:.3s ease;
}

/* ===== Typography ===== */
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--dark)}
h1{font-size:clamp(1.8rem,4vw,2.8rem)}
h2{font-size:clamp(1.4rem,3vw,2.2rem)}
h3{font-size:clamp(1.1rem,2.5vw,1.6rem)}
h4{font-size:1.2rem}
p{margin-bottom:1rem;color:var(--text)}

/* ===== Layout ===== */
.container{max-width:1280px;margin:0 auto;padding:0 20px}
.section{padding:70px 0}
.section-alt{background:var(--light)}
.row{display:flex;flex-wrap:wrap;gap:24px}
.col-2{flex:0 0 calc(50% - 12px)}
.col-3{flex:0 0 calc(33.333% - 16px)}
.col-4{flex:0 0 calc(25% - 18px)}

/* ===== Section Headers ===== */
.section-header{text-align:center;margin-bottom:50px}
.section-header h2{position:relative;display:inline-block;padding-bottom:16px}
.section-header h2::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:2px}
.section-header p{color:var(--text-light);max-width:600px;margin:16px auto 0}

/* ===== Header & Navigation ===== */
#site-header{position:sticky;top:0;z-index:1000;background:#fff;box-shadow:0 2px 20px rgba(0,0,0,.08);transition:all .3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.logo-wrap{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-wrap img{height:44px;width:auto}
.logo-text{font-size:1.5rem;font-weight:900;color:var(--primary);letter-spacing:2px}
.logo-sub{font-size:.7rem;color:var(--text-light);letter-spacing:1px}

/* Nav */
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:8px 14px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;color:var(--text);transition:all .25s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:var(--primary);background:rgba(192,57,43,.08)}
.nav-cta{background:var(--primary)!important;color:#fff!important;padding:8px 18px!important;border-radius:20px!important}
.nav-cta:hover{background:var(--primary-dark)!important;transform:translateY(-1px)}

/* Search Bar */
.search-bar{display:flex;align-items:center;background:var(--light);border:1.5px solid var(--border);border-radius:24px;overflow:hidden;transition:border-color .25s;flex:0 0 220px}
.search-bar:focus-within{border-color:var(--primary)}
.search-bar input{border:none;background:none;padding:8px 14px;font-size:.88rem;width:100%;outline:none;color:var(--text)}
.search-bar button{padding:8px 14px;color:var(--text-light);font-size:1rem;transition:color .25s}
.search-bar button:hover{color:var(--primary)}

/* Header Search Row */
.header-search-row{background:var(--dark2);padding:10px 0}
.header-search-row .container{display:flex;align-items:center;gap:16px}
.header-search-row .search-bar{flex:1;max-width:600px;background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2)}
.header-search-row .search-bar input{color:#fff}
.header-search-row .search-bar input::placeholder{color:rgba(255,255,255,.5)}
.header-search-row .search-bar button{color:rgba(255,255,255,.7)}
.header-search-row .search-bar:focus-within{border-color:var(--accent)}
.search-hot-tags{display:flex;gap:8px;flex-wrap:wrap}
.search-hot-tags span{font-size:.75rem;color:rgba(255,255,255,.6)}
.search-hot-tags a{font-size:.78rem;color:rgba(255,255,255,.8);background:rgba(255,255,255,.1);padding:3px 10px;border-radius:12px;transition:all .25s}
.search-hot-tags a:hover{background:var(--primary);color:#fff}

/* Mobile Menu */
.menu-toggle{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--dark);transition:.3s;border-radius:2px}

/* ===== Hero Banner ===== */
.hero{position:relative;min-height:580px;display:flex;align-items:center;overflow:hidden;background:var(--dark2)}
.hero-bg{position:absolute;inset:0;background-image:url('../images/hero_banner.jpg');background-size:cover;background-position:center;opacity:.35}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,26,46,.9) 0%,rgba(192,57,43,.4) 100%)}
.hero-content{position:relative;z-index:2;max-width:700px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(192,57,43,.2);border:1px solid rgba(192,57,43,.4);color:var(--accent);padding:6px 16px;border-radius:20px;font-size:.82rem;margin-bottom:20px;backdrop-filter:blur(4px)}
.hero h1{color:#fff;margin-bottom:16px;text-shadow:0 2px 10px rgba(0,0,0,.3)}
.hero h1 span{color:var(--accent)}
.hero p{color:rgba(255,255,255,.8);font-size:1.05rem;margin-bottom:30px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:30px;font-size:.95rem;font-weight:600;transition:all .3s;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 15px rgba(192,57,43,.4)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(192,57,43,.5)}
.btn-outline{border:2px solid rgba(255,255,255,.6);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.15);border-color:#fff}
.hero-stats{display:flex;gap:32px;margin-top:40px}
.hero-stat{text-align:center}
.hero-stat .num{font-size:1.8rem;font-weight:900;color:var(--accent)}
.hero-stat .label{font-size:.78rem;color:rgba(255,255,255,.6)}

/* ===== Video Cards ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}
.video-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--dark)}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.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,.3);opacity:0;transition:opacity .3s}
.video-card:hover .play-btn{opacity:1}
.play-icon{width:56px;height:56px;background:rgba(255,255,255,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:var(--primary);transform:scale(.8);transition:transform .3s}
.video-card:hover .play-icon{transform:scale(1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;font-size:.72rem;padding:2px 8px;border-radius:4px}
.video-tag{position:absolute;top:8px;left:8px;background:var(--primary);color:#fff;font-size:.72rem;padding:3px 10px;border-radius:4px}
.video-info{padding:14px}
.video-info h4{font-size:.95rem;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;font-size:.78rem;color:var(--text-light)}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-author{display:flex;align-items:center;gap:8px;margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}
.video-author img{width:28px;height:28px;border-radius:50%;object-fit:cover}
.video-author span{font-size:.8rem;color:var(--text-light)}

/* ===== Feature Cards ===== */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.feature-card{background:#fff;border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);transition:all .3s;border-top:3px solid transparent;text-align:center}
.feature-card:hover{transform:translateY(-5px);border-top-color:var(--primary);box-shadow:var(--shadow-hover)}
.feature-icon{width:64px;height:64px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;margin:0 auto 16px;color:#fff}
.feature-card h3{font-size:1.05rem;margin-bottom:8px}
.feature-card p{font-size:.88rem;color:var(--text-light);margin:0}

/* ===== Expert Cards ===== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all .3s;text-align:center}
.expert-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.expert-photo{width:100%;aspect-ratio:1;overflow:hidden}
.expert-photo img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.expert-card:hover .expert-photo img{transform:scale(1.05)}
.expert-info{padding:16px}
.expert-info h4{font-size:1rem;margin-bottom:4px}
.expert-role{font-size:.82rem;color:var(--primary);font-weight:600;margin-bottom:8px}
.expert-desc{font-size:.8rem;color:var(--text-light);line-height:1.5;margin-bottom:12px}
.expert-tags{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;margin-bottom:12px}
.expert-tags span{font-size:.72rem;background:var(--light);padding:3px 8px;border-radius:12px;color:var(--text-light)}
.expert-btns{display:flex;gap:8px;justify-content:center}
.expert-btns a{font-size:.78rem;padding:6px 14px;border-radius:16px;font-weight:500;transition:all .25s}
.btn-sm-primary{background:var(--primary);color:#fff}
.btn-sm-primary:hover{background:var(--primary-dark)}
.btn-sm-outline{border:1px solid var(--border);color:var(--text)}
.btn-sm-outline:hover{border-color:var(--primary);color:var(--primary)}

/* ===== Review Cards ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}
.review-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);position:relative}
.review-card::before{content:'\201C';position:absolute;top:12px;right:20px;font-size:4rem;color:var(--primary);opacity:.1;font-family:Georgia,serif;line-height:1}
.review-stars{color:var(--accent);font-size:1rem;margin-bottom:10px}
.review-text{font-size:.9rem;color:var(--text);line-height:1.7;margin-bottom:16px}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem;flex-shrink:0}
.review-name{font-size:.88rem;font-weight:600}
.review-date{font-size:.75rem;color:var(--text-light)}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;cursor:pointer;font-weight:600;font-size:.95rem;transition:background .25s}
.faq-q:hover{background:var(--light)}
.faq-q.open{background:var(--light);color:var(--primary)}
.faq-icon{font-size:1.2rem;transition:transform .3s;flex-shrink:0}
.faq-q.open .faq-icon{transform:rotate(45deg)}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;font-size:.9rem;color:var(--text-light);line-height:1.8}
.faq-a.open{max-height:200px;padding:0 20px 16px}

/* ===== Partner Logos ===== */
.partner-grid{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.partner-item{background:var(--light);border-radius:var(--radius-sm);padding:16px 28px;font-size:.9rem;font-weight:700;color:var(--mid);transition:all .25s;border:1px solid var(--border)}
.partner-item:hover{background:var(--primary);color:#fff;transform:translateY(-3px)}

/* ===== Contact Section ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h3{margin-bottom:16px}
.contact-list{display:flex;flex-direction:column;gap:12px}
.contact-item{display:flex;align-items:flex-start;gap:12px;font-size:.9rem}
.contact-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.9rem;flex-shrink:0}
.contact-label{font-size:.75rem;color:var(--text-light)}
.contact-value{font-weight:500}
.qr-grid{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}
.qr-item{text-align:center}
.qr-item img{width:130px;height:130px;border-radius:8px;border:1px solid var(--border)}
.qr-item p{font-size:.8rem;color:var(--text-light);margin-top:8px}

/* ===== How To Join ===== */
.join-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:24px}
.join-step{text-align:center;padding:24px 16px}
.step-num{width:48px;height:48px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:900;margin:0 auto 14px}
.join-step h4{font-size:.95rem;margin-bottom:8px}
.join-step p{font-size:.82rem;color:var(--text-light)}

/* ===== Social Share ===== */
.social-share{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.share-btn{display:flex;align-items:center;gap:8px;padding:10px 20px;border-radius:24px;font-size:.85rem;font-weight:600;transition:all .3s;cursor:pointer}
.share-wechat{background:#07c160;color:#fff}
.share-weibo{background:#e6162d;color:#fff}
.share-douyin{background:#000;color:#fff}
.share-bilibili{background:#00a1d6;color:#fff}
.share-btn:hover{transform:translateY(-2px);opacity:.9}

/* ===== Tags ===== */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-block;padding:5px 14px;border-radius:20px;font-size:.8rem;background:var(--light);color:var(--text);border:1px solid var(--border);transition:all .25s;cursor:pointer}
.tag:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.tag-hot{background:rgba(192,57,43,.1);border-color:rgba(192,57,43,.3);color:var(--primary)}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:12px 0;font-size:.85rem;color:var(--text-light)}
.breadcrumb a{color:var(--text-light);transition:color .25s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 6px}

/* ===== Page Hero ===== */
.page-hero{background:linear-gradient(135deg,var(--dark2),var(--dark));padding:50px 0;color:#fff;text-align:center}
.page-hero h1{color:#fff;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.7);max-width:600px;margin:0 auto}

/* ===== Sidebar ===== */
.content-with-sidebar{display:grid;grid-template-columns:1fr 300px;gap:40px}
.sidebar-widget{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:24px}
.sidebar-widget h4{font-size:.95rem;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--primary)}
.sidebar-list li{padding:8px 0;border-bottom:1px solid var(--border);font-size:.88rem}
.sidebar-list li:last-child{border:none}
.sidebar-list a{color:var(--text);transition:color .25s}
.sidebar-list a:hover{color:var(--primary)}

/* ===== Stats Bar ===== */
.stats-bar{background:linear-gradient(135deg,var(--dark2),var(--dark));padding:40px 0;color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item .num{font-size:2rem;font-weight:900;color:var(--accent)}
.stat-item .label{font-size:.82rem;color:rgba(255,255,255,.6);margin-top:4px}

/* ===== Footer ===== */
#site-footer{background:var(--dark);color:rgba(255,255,255,.75);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo-text{color:#fff;font-size:1.6rem}
.footer-brand p{font-size:.85rem;color:rgba(255,255,255,.5);margin-top:12px;line-height:1.8}
.footer-col h5{color:#fff;font-size:.95rem;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-col ul li{margin-bottom:8px}
.footer-col ul a{font-size:.85rem;color:rgba(255,255,255,.55);transition:color .25s}
.footer-col ul a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:gap;gap:12px;font-size:.82rem;color:rgba(255,255,255,.4)}
.footer-bottom a{color:rgba(255,255,255,.4);transition:color .25s}
.footer-bottom a:hover{color:var(--accent)}
.footer-qr{display:flex;gap:20px;margin-top:20px}
.footer-qr-item{text-align:center}
.footer-qr-item img{width:80px;height:80px;border-radius:6px;border:1px solid rgba(255,255,255,.1)}
.footer-qr-item p{font-size:.72rem;color:rgba(255,255,255,.4);margin-top:6px}

/* ===== Badges & Labels ===== */
.badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:.72rem;font-weight:600}
.badge-new{background:var(--primary);color:#fff}
.badge-hot{background:var(--accent);color:#fff}
.badge-award{background:var(--accent2);color:#fff}

/* ===== Loading & Lazy ===== */
.lazy{opacity:0;transition:opacity .4s}
.lazy.loaded{opacity:1}
img[data-src]{background:var(--light2)}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
.animate-in{animation:fadeInUp .6s ease forwards}
.pulse{animation:pulse 2s infinite}

/* ===== Scroll Top ===== */
#scroll-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;cursor:pointer;opacity:0;transform:translateY(20px);transition:all .3s;z-index:999;box-shadow:0 4px 15px rgba(192,57,43,.4)}
#scroll-top.show{opacity:1;transform:translateY(0)}
#scroll-top:hover{background:var(--primary-dark);transform:translateY(-3px)}

/* ===== Live Badge ===== */
.live-badge{display:inline-flex;align-items:center;gap:5px;background:#e74c3c;color:#fff;font-size:.72rem;padding:3px 10px;border-radius:12px;font-weight:600}
.live-dot{width:6px;height:6px;background:#fff;border-radius:50%;animation:pulse 1s infinite}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .content-with-sidebar{grid-template-columns:1fr}
}
@media(max-width:768px){
  .section{padding:50px 0}
  .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;box-shadow:0 10px 30px rgba(0,0,0,.1);gap:4px}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 16px;border-radius:var(--radius-sm)}
  .menu-toggle{display:flex}
  .search-bar{flex:1}
  .hero{min-height:420px}
  .hero-stats{gap:20px}
  .hero-stat .num{font-size:1.4rem}
  .col-2,.col-3,.col-4{flex:0 0 100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .header-search-row .search-hot-tags{display:none}
}
@media(max-width:480px){
  .hero h1{font-size:1.6rem}
  .hero-btns{flex-direction:column}
  .btn{justify-content:center}
  .video-grid{grid-template-columns:1fr}
}

/* ===== Animate on Scroll ===== */
.animate-on-scroll{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}
.animate-on-scroll.animated{opacity:1;transform:translateY(0)}

/* ===== Live Dot ===== */
@keyframes livePulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.5)}}
.live-dot{display:inline-block;width:7px;height:7px;background:#e74c3c;border-radius:50%;animation:livePulse 1.2s ease-in-out infinite}

/* ===== Hero BG Image ===== */
.hero-bg{background-image:url('/assets/images/hero_banner.jpg');background-size:cover;background-position:center}

/* ===== Stats Bar Override ===== */
.stats-bar{background:linear-gradient(135deg,#16213e,#1a1a2e);padding:24px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center}
.stat-item .num{font-size:1.05rem;font-weight:700;color:#fff;margin-bottom:4px}
.stat-item .label{font-size:.78rem;color:rgba(255,255,255,.5)}

/* ===== Counter ===== */
.counter{display:inline-block}