/* Product page */
:root{--bg-deep:#000;--primary:#FFB800;--primary-light:#FFD54F;--primary-dark:#E6A000;--text-main:#fff;--text-dim:#9E9E9E;--glass-bg:rgba(40,30,0,0.35);--glass-border:rgba(255,184,0,0.2);--accent-warm:#FF8F00}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC",sans-serif;background:var(--bg-deep);color:var(--text-main);overflow-x:hidden;line-height:1.6}
#particles-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1}
.navbar{position:fixed;top:0;left:0;width:100%;height:80px;background:rgba(0,0,0,0.8);backdrop-filter:blur(20px);border-bottom:1px solid var(--glass-border);display:flex;justify-content:space-between;align-items:center;padding:0 5%;z-index:1000;transition:all .3s}
.nav-logo{display:flex;align-items:center;text-decoration:none}
.nav-logo img{height:42px;width:auto;display:block}
.nav-menu{display:flex;gap:40px}
.nav-menu a{color:var(--text-dim);text-decoration:none;font-size:.95em;transition:all .3s;position:relative}
.nav-menu a::after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background:var(--primary);transition:width .3s}
.nav-menu a:hover{color:var(--primary)}
.nav-menu a:hover::after{width:100%}
.nav-menu a.active{color:var(--primary)}
.nav-menu a.active::after{width:100%}
.nav-cta{padding:12px 30px;background:linear-gradient(135deg,var(--primary),var(--accent-warm));border:none;border-radius:30px;color:#1a1a1a;font-weight:700;cursor:pointer;transition:all .3s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,184,0,.4)}
.page-header{padding:140px 5% 60px;text-align:center;position:relative}
.page-header h1{font-size:clamp(2em,4vw,3.5em);font-weight:800;margin-bottom:20px}
.page-header p{color:var(--text-dim);font-size:1.1em;max-width:700px;margin:0 auto}
.page-section{padding:80px 5%;position:relative}
.page-section:nth-child(even){background:rgba(255,184,0,0.02)}
.section-title{text-align:center;font-size:clamp(1.6em,3vw,2.5em);font-weight:800;margin-bottom:20px}
.section-subtitle{text-align:center;color:var(--text-dim);font-size:1em;margin-bottom:50px;max-width:600px;margin-left:auto;margin-right:auto}
.glass-card{background:var(--glass-bg);backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:20px;padding:40px;transition:all .4s;position:relative;overflow:hidden}
.glass-card::before{content:"";position:absolute;top:0;left:-100%;width:50%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,184,0,0.1),transparent);transition:left .8s}
.glass-card:hover::before{left:100%}
.glass-card:hover{transform:translateY(-10px);border-color:var(--primary)}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;max-width:1400px;margin:0 auto}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:30px;max-width:1200px;margin:0 auto}
.btn-primary{padding:15px 40px;background:linear-gradient(135deg,var(--primary),var(--accent-warm));border:none;border-radius:50px;color:#1a1a1a;font-size:1em;font-weight:700;cursor:pointer;transition:all .3s;display:inline-block;text-decoration:none}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(255,184,0,.4)}
.btn-secondary{padding:12px 30px;background:transparent;border:2px solid var(--primary);border-radius:50px;color:var(--primary);font-size:.95em;font-weight:600;cursor:pointer;transition:all .3s;display:inline-block;text-decoration:none}
.btn-secondary:hover{background:var(--primary);color:#1a1a1a;transform:translateY(-2px)}
.footer{text-align:center;padding:30px 5%;background:var(--bg-deep);border-top:1px solid var(--glass-border);color:var(--text-dim);font-size:.9em;position:relative;z-index:10}
.footer a{color:var(--text-dim);text-decoration:none;transition:color .3s}
.footer a:hover{color:var(--primary-light)}
.footer p{margin-bottom:5px}
.mobile-menu-btn{display:none;font-size:1.8em;color:var(--primary);cursor:pointer;user-select:none}
.accordion{margin:0 auto;max-width:800px}
.accordion-item{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:15px;margin-bottom:15px;overflow:hidden;transition:all .3s}
.accordion-item:hover{border-color:var(--primary)}
.accordion-header{padding:20px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:#fff;font-size:1.05em;font-weight:600}
.accordion-header span{color:var(--primary);font-size:1.2em;transition:transform .3s}
.accordion-body{padding:0 25px 20px;color:var(--text-dim);line-height:1.8;display:none}
.accordion-item.open .accordion-body{display:block}
.accordion-item.open .accordion-header span{transform:rotate(45deg)}
.price-card{padding:50px 30px;text-align:center;display:flex;flex-direction:column;align-items:center}
.price-card.featured{border-color:var(--primary);border-width:2px;position:relative}
.price-card.featured::after{content:"推荐";position:absolute;top:-12px;right:30px;background:var(--primary);color:#1a1a1a;padding:4px 16px;border-radius:20px;font-size:.8em;font-weight:700}
.price-name{font-size:1.3em;color:var(--primary-light);margin-bottom:10px;font-weight:600}
.price-amount{font-size:3.5em;font-weight:900;color:#fff;margin:15px 0}
.price-amount small{font-size:.35em;font-weight:400;color:var(--text-dim)}
.price-period{color:var(--text-dim);margin-bottom:25px}
.price-features{list-style:none;width:100%;margin:20px 0 30px}
.price-features li{padding:10px 0;color:var(--text-dim);border-bottom:1px solid rgba(255,255,255,0.05)}
.price-features li::before{content:"✓ ";color:var(--primary);font-weight:700}
.demo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;max-width:1000px;margin:30px auto}
.demo-screen{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px;aspect-ratio:9/16;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-dim);font-size:.9em;position:relative;overflow:hidden}
.demo-screen .demo-icon{font-size:3em;margin-bottom:15px;opacity:.6}
.feature-list{margin:0 auto;max-width:800px}
.feature-item{display:flex;gap:20px;margin-bottom:30px;padding:25px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:15px;transition:all .3s}
.feature-item:hover{border-color:var(--primary);transform:translateX(5px)}
.feature-icon-box{width:60px;height:60px;min-width:60px;background:rgba(255,184,0,0.15);border:1px solid var(--primary);border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:1.8em}
.feature-text h4{color:var(--primary-light);margin-bottom:8px;font-size:1.1em}
.feature-text p{color:var(--text-dim);line-height:1.7}
.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:25px;max-width:1000px;margin:0 auto}
.download-card{padding:40px;text-align:center}
.download-icon{font-size:4em;margin-bottom:20px}
.download-card h3{color:var(--primary-light);margin-bottom:10px}
.download-card p{color:var(--text-dim);font-size:.9em;margin-bottom:20px;line-height:1.6}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;max-width:1200px;margin:0 auto}
.about-text p{color:var(--text-dim);line-height:2;margin-bottom:20px}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px}
.about-stat{text-align:center;padding:30px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:16px}
.about-stat .num{font-size:2.5em;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--accent-warm));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.about-stat .label{color:var(--text-dim);font-size:.9em;margin-top:8px}
@media(max-width:768px){
  .mobile-menu-btn{display:block}
  .nav-menu{display:flex;flex-direction:column;position:absolute;top:80px;left:0;width:100%;background:rgba(0,0,0,0.95);backdrop-filter:blur(20px);padding:20px 0;gap:25px;text-align:center;border-bottom:1px solid var(--glass-border);opacity:0;transform:translateY(-20px);pointer-events:none;transition:all .3s}
  .nav-menu.active{opacity:1;transform:translateY(0);pointer-events:auto}
  .grid-2,.about-grid{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr}
}