/* 熊猫体育官方网站 style.css */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#f5f7fa;color:#1a1a2e;transition:background .3s,color .3s}
body.dark{background:#0d0d1a;color:#e0e0e0}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
header{background:linear-gradient(135deg,#1a1a2e,#16213e);padding:15px 0;position:sticky;top:0;z-index:1000;box-shadow:0 4px 20px rgba(0,0,0,.3)}
.header-inner{display:flex;justify-content:space-between;align-items:center}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo svg{width:40px;height:40px}
.logo span{font-size:24px;font-weight:bold;color:#ff6b35}
nav{display:flex;gap:25px;align-items:center}
nav a{color:#fff;text-decoration:none;font-size:15px;transition:color .3s;position:relative}
nav a:hover,nav a.active{color:#ff6b35}
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:28px;cursor:pointer}
.hero{background:linear-gradient(135deg,#1a1a2e,#0f3460,#16213e);padding:100px 0;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,107,53,.1) 0%,transparent 70%);animation:pulse 6s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.2)}}
.hero h1{font-size:48px;color:#fff;margin-bottom:20px;position:relative;z-index:1}
.hero p{font-size:18px;color:#ccc;max-width:700px;margin:0 auto 30px;position:relative;z-index:1}
.btn{display:inline-block;background:#ff6b35;color:#fff;padding:14px 40px;border-radius:50px;text-decoration:none;font-size:18px;font-weight:bold;transition:transform .3s,box-shadow .3s;position:relative;z-index:1}
.btn:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(255,107,53,.4)}
.banner{position:relative;width:100%;height:400px;overflow:hidden}
.banner-slide{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity 1s}
.banner-slide.active{opacity:1}
.banner-slide svg{width:100%;height:100%;object-fit:cover}
.banner-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:10px}
.banner-dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:background .3s}
.banner-dot.active{background:#ff6b35}
section{padding:80px 0}
.section-title{font-size:36px;text-align:center;margin-bottom:50px;position:relative}
.section-title::after{content:'';display:block;width:60px;height:4px;background:#ff6b35;margin:15px auto 0;border-radius:2px}
.grid{display:grid;gap:30px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:rgba(255,255,255,.8);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:20px;padding:30px;box-shadow:0 8px 32px rgba(0,0,0,.1);transition:transform .3s,box-shadow .3s;border:1px solid rgba(255,255,255,.2)}
.card:hover{transform:translateY(-10px);box-shadow:0 16px 48px rgba(0,0,0,.15)}
body.dark .card{background:rgba(30,30,60,.8);border-color:rgba(255,255,255,.05)}
.card svg{width:60px;height:60px;margin-bottom:20px}
.card h3{font-size:22px;margin-bottom:15px}
.card p{line-height:1.8;color:#666}
body.dark .card p{color:#aaa}
.stats{background:linear-gradient(135deg,#ff6b35,#ff4d4d);padding:60px 0;color:#fff}
.stats .grid{grid-template-columns:repeat(4,1fr);text-align:center}
.stat-number{font-size:48px;font-weight:bold}
.stat-label{font-size:16px;opacity:.9;margin-top:10px}
.about-content{max-width:900px;margin:0 auto;line-height:2;font-size:16px}
.about-content p{margin-bottom:20px}
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}
.team-card{text-align:center;padding:30px}
.team-card svg{width:100px;height:100px;border-radius:50%;margin-bottom:15px}
.faq-item{border-bottom:1px solid #ddd;padding:20px 0;cursor:pointer}
body.dark .faq-item{border-color:#333}
.faq-question{font-size:18px;font-weight:600;display:flex;justify-content:space-between;align-items:center}
.faq-question::after{content:'+';font-size:24px;transition:transform .3s}
.faq-item.open .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s;padding-top:10px;line-height:1.8;color:#666}
body.dark .faq-answer{color:#aaa}
.faq-item.open .faq-answer{max-height:500px}
.howto-steps{counter-reset:step}
.howto-step{display:flex;gap:20px;margin-bottom:30px;align-items:flex-start}
.howto-step::before{counter-increment:step;content:counter(step);background:#ff6b35;color:#fff;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:bold;flex-shrink:0}
.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.news-card{padding:25px}
.news-card .date{color:#999;font-size:14px;margin-bottom:10px}
.news-card h3{font-size:20px;margin-bottom:10px}
.news-card p{line-height:1.7;color:#666;margin-bottom:15px}
body.dark .news-card p{color:#aaa}
.news-card .read-more{color:#ff6b35;text-decoration:none;font-weight:600}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}
.contact-item{text-align:center;padding:30px}
.contact-item svg{width:50px;height:50px;margin-bottom:15px}
.footer{background:#1a1a2e;color:#ccc;padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;margin-bottom:40px}
.footer h4{color:#fff;margin-bottom:20px;font-size:18px}
.footer a{color:#aaa;text-decoration:none;display:block;margin-bottom:10px;transition:color .3s}
.footer a:hover{color:#ff6b35}
.footer-bottom{border-top:1px solid #333;padding-top:30px;text-align:center;font-size:14px}
.footer-bottom a{display:inline;margin:0 10px}
.back-to-top{position:fixed;bottom:40px;right:40px;width:50px;height:50px;background:#ff6b35;color:#fff;border:none;border-radius:50%;cursor:pointer;font-size:24px;display:none;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(255,107,53,.4);transition:transform .3s;z-index:999}
.back-to-top:hover{transform:scale(1.1)}
.dark-toggle{background:none;border:2px solid #ff6b35;color:#ff6b35;padding:8px 16px;border-radius:30px;cursor:pointer;font-size:14px;transition:background .3s,color .3s}
.dark-toggle:hover{background:#ff6b35;color:#fff}
.search-box{display:flex;gap:10px;max-width:400px;margin:0 auto 40px}
.search-box input{flex:1;padding:12px 20px;border:2px solid #ddd;border-radius:30px;font-size:16px;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#ff6b35}
.search-box button{padding:12px 25px;background:#ff6b35;color:#fff;border:none;border-radius:30px;cursor:pointer;font-size:16px}
.qr-grid{display:flex;gap:30px;justify-content:center;flex-wrap:wrap}
.qr-item{text-align:center}
.qr-item svg{width:120px;height:120px}
.qr-item p{margin-top:10px;color:#666}
body.dark .qr-item p{color:#aaa}
.animate-on-scroll{opacity:0;transform:translateY(30px);transition:opacity .8s,transform .8s}
.animate-on-scroll.visible{opacity:1;transform:translateY(0)}
@media (max-width:768px){
.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
.hero h1{font-size:32px}
.stats .grid{grid-template-columns:repeat(2,1fr);gap:20px}
nav{display:none;flex-direction:column;position:absolute;top:70px;left:0;right:0;background:#1a1a2e;padding:20px}
nav.open{display:flex}
.menu-toggle{display:block}
.banner{height:250px}
}