/* ===== style.css ===== */
/* 宝威体育 - BaoWei SPORTS */
/* 渐变Banner · 圆角卡片 · 毛玻璃 · 响应式 · 暗黑模式 · 滚动动画 */

/* ---- Reset & Base ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#f7971e;
  --primary-dark:#e06a00;
  --secondary:#ffd200;
  --bg:#f8f9fa;
  --bg-card:#ffffff;
  --text:#1a1a2e;
  --text-light:#555;
  --glass:rgba(255,255,255,0.7);
  --shadow:0 8px 32px rgba(0,0,0,0.1);
  --radius:20px;
  --transition:0.3s ease;
  --nav-bg:rgba(26,26,46,0.95);
  --footer-bg:#0f0f1a;
  --section-bg:#f0f2f5;
  --border:#e0e0e0;
  --gradient:linear-gradient(135deg,#f7971e,#ffd200);
  --gradient-dark:linear-gradient(135deg,#1a1a2e,#16213e);
  --dark-bg:#121212;
  --dark-card:#1e1e2a;
  --dark-text:#e0e0e0;
  --dark-border:#333
}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
  scroll-behavior:smooth
}
body.dark{background:var(--dark-bg);color:var(--dark-text)}
body.dark .card,body.dark section,body.dark .glass,body.dark .faq-item,body.dark .article-card,body.dark .team-card,body.dark .service-card,body.dark .solution-card,body.dark .case-card,body.dark .testimonial-card{background:var(--dark-card);color:var(--dark-text);border-color:var(--dark-border)}
body.dark .glass{background:rgba(30,30,42,0.8);backdrop-filter:blur(10px)}
body.dark .nav{background:rgba(15,15,26,0.98)}
body.dark footer{background:#0a0a12}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
img,svg{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
section{padding:80px 0}
h1{font-size:clamp(2.2rem,5vw,3.8rem);font-weight:800;line-height:1.2;margin-bottom:20px}
h2{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:700;margin-bottom:40px;text-align:center;position:relative}
h2::after{content:'';display:block;width:80px;height:4px;background:var(--gradient);margin:15px auto 0;border-radius:2px}
h3{font-size:1.4rem;font-weight:600;margin-bottom:15px}
.btn{
  display:inline-block;padding:14px 36px;border-radius:50px;font-weight:600;border:none;
  cursor:pointer;transition:var(--transition);font-size:1rem;
  background:var(--gradient);color:#1a1a2e;box-shadow:0 4px 15px rgba(247,151,30,0.3)
}
.btn:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(247,151,30,0.4);color:#1a1a2e}
.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary);box-shadow:none}
.btn-outline:hover{background:var(--gradient);color:#1a1a2e;border-color:transparent}
.glass{background:var(--glass);backdrop-filter:blur(12px);border-radius:var(--radius);border:1px solid rgba(255,255,255,0.3);box-shadow:var(--shadow)}
.card{
  background:var(--bg-card);border-radius:var(--radius);padding:30px;
  box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:var(--transition);border:1px solid var(--border)
}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,0.1)}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}
.grid-4{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:25px}
.text-center{text-align:center}
.mt-20{margin-top:20px}
.mb-20{margin-bottom:20px}

/* ---- Navigation ---- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:var(--nav-bg);backdrop-filter:blur(15px);
  border-bottom:1px solid rgba(255,255,255,0.05);transition:var(--transition)
}
.nav .container{display:flex;justify-content:space-between;align-items:center;height:70px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.6rem;font-weight:800;color:#fff}
.nav-logo svg{width:40px;height:40px}
.nav-links{display:flex;gap:25px;list-style:none}
.nav-links a{color:rgba(255,255,255,0.8);font-weight:500;font-size:0.95rem;padding:8px 0;position:relative;transition:var(--transition)}
.nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient);transition:var(--transition)}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:5px}
.nav-toggle span{width:28px;height:3px;background:#fff;border-radius:3px;transition:var(--transition)}
.dark-toggle{background:none;border:2px solid rgba(255,255,255,0.3);color:#fff;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.2rem;transition:var(--transition)}
.dark-toggle:hover{border-color:var(--primary)}

/* ---- Hero ---- */
.hero{
  min-height:100vh;display:flex;align-items:center;position:relative;
  background:var(--gradient-dark);overflow:hidden;padding-top:70px
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 30% 50%,rgba(247,151,30,0.15) 0%,transparent 60%),
             radial-gradient(circle at 70% 30%,rgba(255,210,0,0.1) 0%,transparent 50%);
  pointer-events:none
}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-content{color:#fff}
.hero-content h1{color:#fff}
.hero-content p{font-size:1.2rem;opacity:0.9;margin-bottom:30px;max-width:500px}
.hero-badge{display:inline-block;background:rgba(247,151,30,0.2);border:1px solid rgba(247,151,30,0.3);padding:8px 20px;border-radius:50px;font-size:0.85rem;margin-bottom:20px;color:var(--secondary)}
.hero-visual{display:flex;justify-content:center;align-items:center}
.hero-visual svg{width:100%;max-width:500px;height:auto;filter:drop-shadow(0 20px 40px rgba(0,0,0,0.3))}

/* ---- Banner Slider ---- */
.banner-slider{position:relative;overflow:hidden;border-radius:var(--radius);background:var(--gradient-dark);min-height:400px;display:flex;align-items:center}
.banner-slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity 0.8s ease;padding:40px;text-align:center;color:#fff}
.banner-slide.active{opacity:1;position:relative}
.banner-slide h2{color:#fff;font-size:2rem}
.banner-slide p{max-width:600px;margin:0 auto 20px}
.banner-dots{display:flex;justify-content:center;gap:12px;margin-top:30px}
.banner-dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,0.3);cursor:pointer;transition:var(--transition);border:none}
.banner-dot.active{background:var(--primary);transform:scale(1.2)}

/* ---- Stats ---- */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px}
.stat-item{text-align:center;padding:30px 20px}
.stat-number{font-size:3rem;font-weight:800;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:1rem;color:var(--text-light);margin-top:5px}

/* ---- About ---- */
.about-content{max-width:800px;margin:0 auto;text-align:center}
.about-content p{margin-bottom:15px;font-size:1.05rem}

/* ---- Services ---- */
.service-icon{width:70px;height:70px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;background:var(--gradient)}
.service-icon svg{width:36px;height:36px;fill:#1a1a2e}

/* ---- Products ---- */
.product-card{text-align:center;padding:40px 30px}
.product-card svg{width:80px;height:80px;margin:0 auto 20px}

/* ---- Team ---- */
.team-card{text-align:center;padding:30px}
.team-avatar{width:120px;height:120px;border-radius:50%;margin:0 auto 20px;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:3rem;color:#1a1a2e;font-weight:700}

/* ---- Testimonials ---- */
.testimonial-card{padding:30px;position:relative}
.testimonial-card::before{content:'"';font-size:4rem;position:absolute;top:10px;left:20px;opacity:0.1;color:var(--primary);font-family:Georgia,serif}

/* ---- FAQ ---- */
.faq-item{border:1px solid var(--border);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:var(--transition)}
.faq-question{padding:20px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;background:transparent;border:none;width:100%;text-align:left;font-size:1.05rem;color:inherit}
.faq-question::after{content:'+';font-size:1.5rem;transition:var(--transition);color:var(--primary)}
.faq-item.open .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.3s ease;padding:0 25px}
.faq-item.open .faq-answer{max-height:500px;padding:0 25px 20px}

/* ---- HowTo ---- */
.howto-step{display:flex;gap:20px;margin-bottom:30px;align-items:flex-start}
.howto-step-number{width:50px;height:50px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.3rem;flex-shrink:0;color:#1a1a2e}

/* ---- Articles ---- */
.article-card{padding:25px;display:flex;flex-direction:column}
.article-card .date{font-size:0.85rem;color:var(--text-light);margin-bottom:10px}
.article-card h3{font-size:1.2rem;margin-bottom:10px}
.article-card p{flex:1;margin-bottom:15px}

/* ---- Footer ---- */
footer{background:var(--footer-bg);color:rgba(255,255,255,0.8);padding:60px 0 30px}
footer h3,footer h4{color:#fff;margin-bottom:20px}
footer a{color:rgba(255,255,255,0.7)}
footer a:hover{color:var(--primary)}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);margin-top:40px;padding-top:30px;text-align:center;font-size:0.9rem}
.footer-qr{width:120px;height:120px;background:rgba(255,255,255,0.1);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-top:10px}

/* ---- Back to top ---- */
.back-to-top{
  position:fixed;bottom:30px;right:30px;width:50px;height:50px;border-radius:50%;
  background:var(--gradient);border:none;cursor:pointer;display:none;
  align-items:center;justify-content:center;font-size:1.5rem;color:#1a1a2e;
  box-shadow:0 4px 15px rgba(247,151,30,0.4);z-index:999;transition:var(--transition)
}
.back-to-top.show{display:flex}
.back-to-top:hover{transform:translateY(-4px)}

/* ---- Search Overlay ---- */
.search-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.7);backdrop-filter:blur(5px);z-index:2000;display:none;align-items:center;justify-content:center}
.search-overlay.open{display:flex}
.search-box{background:var(--bg-card);border-radius:var(--radius);padding:40px;width:90%;max-width:600px}
body.dark .search-box{background:var(--dark-card)}
.search-box input{width:100%;padding:15px 20px;border:2px solid var(--border);border-radius:12px;font-size:1.1rem;background:transparent;color:inherit}
.search-box input:focus{outline:none;border-color:var(--primary)}
.search-results{margin-top:20px;max-height:300px;overflow-y:auto}
.search-result-item{padding:12px 0;border-bottom:1px solid var(--border);cursor:pointer}
.search-result-item:hover{color:var(--primary)}

/* ---- Mobile Menu ---- */
@media (max-width:768px){
  .nav-links{
    position:fixed;top:70px;left:0;right:0;background:var(--nav-bg);
    flex-direction:column;padding:20px;gap:10px;
    transform:translateY(-120%);transition:var(--transition);
    border-bottom:1px solid rgba(255,255,255,0.05)
  }
  .nav-links.open{transform:translateY(0)}
  .nav-toggle{display:flex}
  .hero .container{grid-template-columns:1fr;text-align:center}
  .hero-content p{margin:0 auto 30px}
  .hero-visual{order:-1}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  section{padding:50px 0}
  .banner-slide h2{font-size:1.5rem}
  .stat-number{font-size:2.2rem}
}
@media (min-width:769px) and (max-width:1024px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}

/* ---- Animations ---- */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ---- Scrollbar ---- */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--primary);border-radius:4px}

/* ---- Partners ---- */
.partner-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:30px}
.partner-item{width:120px;height:60px;background:rgba(255,255,255,0.05);border-radius:12px;display:flex;align-items:center;justify-content:center;opacity:0.6;transition:var(--transition)}
.partner-item:hover{opacity:1}

/* ---- Breadcrumb ---- */
.breadcrumb{display:flex;gap:10px;list-style:none;font-size:0.9rem;padding:15px 0;flex-wrap:wrap}
.breadcrumb li::after{content:'/';margin-left:10px;color:var(--text-light)}
.breadcrumb li:last-child::after{content:''}
.breadcrumb a{color:var(--text-light)}