/* style.css - 宝威体育 (中国)官方网站 Baowei Sports */
*{margin:0;padding:0;box-sizing:border-box;font-family:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;scroll-behavior:smooth;}
body{background:#f8f9fa;color:#1a1a2e;transition:background 0.3s,color 0.3s;overflow-x:hidden;}
body.dark{background:#0f0f1a;color:#e0e0e0;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
/* Header */
header{background:linear-gradient(135deg,#1a73e8,#0d47a1);padding:12px 0;position:sticky;top:0;z-index:1000;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 4px 30px rgba(0,0,0,0.1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:24px;font-weight:700;text-decoration:none;}
.logo svg{width:40px;height:40px;}
nav{display:flex;gap:8px;flex-wrap:wrap;}
nav a{color:#fff;text-decoration:none;padding:8px 14px;border-radius:30px;font-size:15px;font-weight:500;transition:background 0.3s,transform 0.2s;}
nav a:hover{background:rgba(255,255,255,0.25);transform:translateY(-2px);}
.menu-toggle{display:none;background:rgba(255,255,255,0.2);border:none;color:#fff;font-size:28px;padding:6px 14px;border-radius:8px;cursor:pointer;}
.search-box{display:flex;gap:6px;}
.search-box input{padding:8px 14px;border-radius:30px;border:none;outline:none;background:rgba(255,255,255,0.2);color:#fff;width:180px;font-size:14px;backdrop-filter:blur(4px);}
.search-box input::placeholder{color:rgba(255,255,255,0.7);}
.search-box button{background:#fff;border:none;border-radius:30px;padding:8px 16px;font-weight:600;color:#1a73e8;cursor:pointer;transition:0.3s;}
.search-box button:hover{background:#e0e0e0;}
.dark-toggle{background:rgba(255,255,255,0.2);border:none;border-radius:30px;padding:8px 14px;color:#fff;cursor:pointer;font-size:18px;transition:0.3s;}
.dark-toggle:hover{background:rgba(255,255,255,0.4);}
/* Breadcrumb */
.breadcrumb{background:#fff;padding:12px 0;border-bottom:1px solid #e9ecef;font-size:14px;color:#555;}
body.dark .breadcrumb{background:#1a1a2e;border-color:#333;color:#bbb;}
.breadcrumb a{color:#1a73e8;text-decoration:none;}
.breadcrumb span{margin:0 6px;}
/* Hero */
.hero{background:linear-gradient(135deg,#0d47a1,#1a73e8,#4fc3f7);padding:80px 0 100px;text-align:center;position:relative;overflow:hidden;}
.hero::after{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 40%,rgba(255,255,255,0.08),transparent 60%);animation:heroGlow 10s infinite alternate;}
@keyframes heroGlow{0%{transform:translate(0,0);}100%{transform:translate(10%,10%);}}
.hero h1{color:#fff;font-size:44px;font-weight:800;margin-bottom:20px;position:relative;z-index:2;text-shadow:0 4px 20px rgba(0,0,0,0.3);}
.hero p{color:rgba(255,255,255,0.9);font-size:20px;max-width:800px;margin:0 auto 30px;position:relative;z-index:2;line-height:1.7;}
.hero .btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2;}
.hero .btn{background:#fff;color:#1a73e8;padding:14px 36px;border-radius:40px;font-weight:700;font-size:18px;text-decoration:none;transition:0.3s;box-shadow:0 8px 30px rgba(0,0,0,0.15);}
.hero .btn:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.25);}
.hero .btn-outline{background:transparent;border:2px solid #fff;color:#fff;}
.hero .btn-outline:hover{background:#fff;color:#1a73e8;}
/* Section common */
section{padding:70px 0;}
.section-title{text-align:center;font-size:34px;font-weight:700;margin-bottom:14px;position:relative;}
.section-sub{text-align:center;color:#666;max-width:700px;margin:0 auto 50px;font-size:17px;line-height:1.7;}
body.dark .section-sub{color:#aaa;}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px;}
.card{background:#fff;border-radius:24px;padding:30px;box-shadow:0 10px 40px rgba(0,0,0,0.06);transition:0.4s;backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,0.2);}
body.dark .card{background:#1e1e32;border-color:#2a2a40;}
.card:hover{transform:translateY(-8px);box-shadow:0 20px 60px rgba(0,0,0,0.12);}
.card img{width:100%;height:200px;object-fit:cover;border-radius:16px;margin-bottom:16px;background:#e9ecef;}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{color:#555;line-height:1.7;}
body.dark .card p{color:#bbb;}
.card .btn-sm{display:inline-block;margin-top:16px;padding:8px 24px;background:#1a73e8;color:#fff;border-radius:30px;text-decoration:none;font-weight:600;transition:0.3s;}
.card .btn-sm:hover{background:#0d47a1;}
/* Stats */
.stats{background:linear-gradient(135deg,#1a73e8,#0d47a1);padding:60px 0;color:#fff;}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px;text-align:center;}
.stat-item h2{font-size:48px;font-weight:800;margin-bottom:6px;}
.stat-item p{font-size:18px;opacity:0.9;}
/* Testimonials */
.testimonial-card{background:#fff;border-radius:24px;padding:30px;box-shadow:0 10px 40px rgba(0,0,0,0.06);text-align:center;}
body.dark .testimonial-card{background:#1e1e32;}
.testimonial-card img{width:80px;height:80px;border-radius:50%;margin:0 auto 16px;background:#ccc;}
.testimonial-card h4{font-size:18px;margin-bottom:4px;}
.testimonial-card .role{color:#1a73e8;font-size:14px;margin-bottom:12px;}
.testimonial-card p{color:#555;line-height:1.8;font-style:italic;}
body.dark .testimonial-card p{color:#bbb;}
/* FAQ */
.faq-item{border-bottom:1px solid #e9ecef;padding:20px 0;cursor:pointer;}
body.dark .faq-item{border-color:#333;}
.faq-question{font-weight:700;font-size:18px;display:flex;justify-content:space-between;align-items:center;}
.faq-question::after{content:'+';font-size:24px;transition:0.3s;}
.faq-item.active .faq-question::after{content:'−';}
.faq-answer{max-height:0;overflow:hidden;transition:0.4s;color:#555;line-height:1.8;padding-top:0;}
body.dark .faq-answer{color:#bbb;}
.faq-item.active .faq-answer{max-height:400px;padding-top:16px;}
/* HowTo */
.howto-step{background:#fff;border-radius:20px;padding:24px;margin-bottom:20px;box-shadow:0 6px 20px rgba(0,0,0,0.04);border-left:6px solid #1a73e8;}
body.dark .howto-step{background:#1e1e32;}
.howto-step h4{font-size:18px;margin-bottom:8px;}
.howto-step p{color:#555;line-height:1.7;}
body.dark .howto-step p{color:#bbb;}
/* Footer */
footer{background:#0d1117;color:#b0b8c8;padding:60px 0 30px;}
footer a{color:#8b9dc3;text-decoration:none;}
footer a:hover{color:#fff;}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;margin-bottom:40px;}
.footer-col h4{color:#fff;font-size:18px;margin-bottom:18px;position:relative;padding-bottom:10px;}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:40px;height:3px;background:#1a73e8;border-radius:4px;}
.footer-col p{line-height:1.8;font-size:14px;}
.footer-col ul{list-style:none;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;}
.footer-bottom{text-align:center;border-top:1px solid #1e2a3a;padding-top:30px;font-size:14px;display:flex;flex-wrap:wrap;justify-content:center;gap:20px;}
.footer-bottom span{opacity:0.8;}
/* Back to top */
.back-top{position:fixed;bottom:40px;right:40px;background:#1a73e8;color:#fff;width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 8px 30px rgba(0,0,0,0.2);cursor:pointer;transition:0.3s;opacity:0;visibility:hidden;z-index:999;border:none;}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{transform:scale(1.1);background:#0d47a1;}
/* Animations */
.fade-up{opacity:0;transform:translateY(40px);transition:0.8s;}
.fade-up.show{opacity:1;transform:translateY(0);}
/* Carousel */
.carousel{overflow:hidden;position:relative;border-radius:24px;}
.carousel-track{display:flex;transition:0.6s;}
.carousel-item{min-width:100%;padding:20px;}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,0.3);border:none;color:#fff;font-size:30px;padding:12px 18px;border-radius:50%;cursor:pointer;backdrop-filter:blur(4px);z-index:10;transition:0.3s;}
.carousel-btn:hover{background:rgba(255,255,255,0.6);}
.carousel-btn.prev{left:16px;}
.carousel-btn.next{right:16px;}
/* Responsive */
@media(max-width:768px){
    .header-inner{flex-direction:column;align-items:stretch;}
    nav{display:none;flex-direction:column;gap:4px;background:rgba(13,71,161,0.95);padding:16px;border-radius:16px;margin-top:8px;}
    nav.open{display:flex;}
    .menu-toggle{display:block;}
    .search-box input{width:120px;}
    .hero h1{font-size:30px;}
    .hero p{font-size:16px;}
    .section-title{font-size:26px;}
    .stats-grid{grid-template-columns:repeat(2,1fr);}
    .back-top{right:20px;bottom:20px;width:44px;height:44px;font-size:20px;}
}
@media(min-width:769px){nav{display:flex!important;}}
/* Scroll animation */
.scroll-animate{opacity:0;transform:translateY(30px);transition:0.8s;}
.scroll-animate.show{opacity:1;transform:translateY(0);}
/* Skeleton for images */
img{background:#e9ecef;transition:0.3s;}
body.dark img{background:#2a2a40;}