:root{
  --glass:rgba(255,255,255,.12);--glass-strong:rgba(255,255,255,.18);--glass-border:rgba(255,255,255,.2);
  --fg:#fff;--fg-dim:rgba(255,255,255,.65);--fg-mute:rgba(255,255,255,.4);
  --accent:#7c3aed;--accent2:#06b6d4;--accent3:#ec4899;
  --radius:24px;--radius-sm:16px;--blur:20px;
  --font-display:'Space Grotesk',sans-serif;--font-body:'Noto Sans SC',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:#0f0a1e;color:var(--fg);font-family:var(--font-body);line-height:1.7;overflow-x:hidden;min-height:100vh;position:relative}
body::before{content:'';position:fixed;inset:-50%;background:conic-gradient(from 0deg at 30% 40%,#7c3aed 0deg,#06b6d4 120deg,#ec4899 240deg,#7c3aed 360deg);opacity:.15;animation:spin 30s linear infinite;z-index:0}
body::after{content:'';position:fixed;inset:0;background:radial-gradient(ellipse at 20% 30%,rgba(124,58,237,.2) 0%,transparent 50%),radial-gradient(ellipse at 80% 70%,rgba(6,182,212,.15) 0%,transparent 50%),radial-gradient(ellipse at 50% 50%,rgba(236,72,153,.1) 0%,transparent 50%);z-index:0;pointer-events:none}
@keyframes spin{to{transform:rotate(360deg)}}
.wrap{position:relative;z-index:1}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
/* 导航 */
.nav{position:sticky;top:12px;z-index:100;margin:0 20px}
.nav-inner{max-width:1240px;margin:0 auto;padding:14px 32px;display:flex;align-items:center;justify-content:space-between;background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:100px}
.nav-brand{font-family:var(--font-display);font-size:16px;font-weight:700;letter-spacing:1px}
.nav-brand small{display:block;font-size:10px;font-weight:300;color:var(--fg-dim);margin-top:2px}
.nav-links{display:flex;gap:24px;list-style:none}
.nav-links a{font-size:13px;color:var(--fg-dim);transition:.3s}
.nav-links a:hover{color:var(--accent2)}
.nav-cta{background:linear-gradient(135deg,var(--accent),var(--accent3));padding:8px 22px;border-radius:100px;font-size:13px;font-weight:500;transition:.3s;white-space:nowrap}
.nav-cta:hover{box-shadow:0 0 20px rgba(124,58,237,.5)}
.nav-cta.pc-only{display:inline}.nav-cta.mobile-only{display:none}
/* 移动端汉堡菜单 */
.nav-toggle{display:none;background:var(--glass-strong);border:1px solid var(--glass-border);border-radius:10px;width:40px;height:40px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0}
.nav-toggle span{width:18px;height:2px;background:var(--fg);border-radius:2px;transition:.3s}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(4px,4px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}
.nav-mobile{display:none;position:fixed;top:72px;left:20px;right:20px;background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:var(--radius);padding:24px;z-index:99;opacity:0;transform:translateY(-10px);transition:.3s;pointer-events:none}
.nav-mobile.active{opacity:1;transform:translateY(0);pointer-events:auto}
.nav-mobile a{display:block;padding:12px 0;font-size:14px;color:var(--fg-dim);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-mobile a:last-child{border-bottom:none}
.nav-mobile a:hover{color:var(--accent2)}
.nav-mobile .nav-cta-mobile{display:block;text-align:center;padding:12px;border-radius:100px;background:linear-gradient(135deg,var(--accent),var(--accent3));color:#fff;margin-top:12px;font-size:14px;font-weight:500}
@media(max-width:768px){.nav-links{display:none}.nav-toggle{display:flex}.nav-mobile{display:block}.nav-inner{padding:12px 20px}.nav-cta.pc-only{display:none}.nav-cta.mobile-only{display:inline}}
/* 返回顶部 */
.back-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;border-radius:50%;background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:98;opacity:0;transform:translateY(20px);transition:.3s;font-size:18px;color:var(--fg)}
.back-top.visible{opacity:1;transform:translateY(0)}
.back-top:hover{background:var(--glass-strong)}
/* 滚动入场动画 */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
/* Hero */
.hero{min-height:auto;display:flex;align-items:center;justify-content:center;text-align:center;padding:120px 40px 80px;position:relative}
@media(max-width:768px){.hero{padding:100px 20px 60px}}
@media(max-width:480px){.hero{padding:90px 16px 50px}.hero-glass{padding:40px 24px}}
.hero-glass{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:var(--radius);padding:60px 48px;max-width:760px;position:relative;overflow:hidden}
.hero-glass::before{content:'';position:absolute;top:-2px;left:-2px;right:-2px;bottom:-2px;background:linear-gradient(135deg,var(--accent),var(--accent2),var(--accent3));border-radius:var(--radius);z-index:-1;opacity:.3}
.hero-tag{display:inline-block;font-family:var(--font-display);font-size:12px;color:var(--accent2);letter-spacing:2px;margin-bottom:20px;padding:6px 18px;background:rgba(6,182,212,.1);border-radius:100px;border:1px solid rgba(6,182,212,.2)}
.hero-title{font-family:var(--font-display);font-size:clamp(26px,4.5vw,48px);font-weight:700;line-height:1.3;margin-bottom:24px}
.hero-title .grad{background:linear-gradient(135deg,var(--accent2),var(--accent3));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:15px;color:var(--fg-dim);line-height:2;margin-bottom:36px}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{padding:14px 36px;border-radius:100px;font-size:14px;font-weight:500;transition:.3s;border:none;cursor:pointer;font-family:var(--font-body);display:inline-block}
.btn-grad{background:linear-gradient(135deg,var(--accent),var(--accent3));color:#fff;box-shadow:0 4px 20px rgba(124,58,237,.3)}
.btn-grad:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(124,58,237,.5)}
.btn-glass{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);color:var(--fg)}
.btn-glass:hover{background:var(--glass-strong)}
/* Section */
.section{max-width:1240px;margin:0 auto;padding:80px 40px}
@media(max-width:768px){.section{padding:50px 20px}}
.section-head{text-align:center;margin-bottom:60px}
.section-head .en{font-family:var(--font-display);font-size:13px;color:var(--accent2);letter-spacing:2px;display:block;margin-bottom:8px}
.section-head h2{font-family:var(--font-display);font-size:clamp(24px,3vw,38px);font-weight:700}
.section-head p{font-size:14px;color:var(--fg-dim);margin-top:12px}
/* 特性 */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.feature-glass{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:var(--radius);padding:36px 28px;transition:.4s;position:relative;overflow:hidden}
.feature-glass::before{content:'';position:absolute;top:0;left:0;width:100%;height:1px;background:linear-gradient(90deg,transparent,var(--accent2),transparent);opacity:0;transition:.4s}
.feature-glass:hover{transform:translateY(-6px);background:var(--glass-strong)}
.feature-glass:hover::before{opacity:1}
.feature-icon{width:100%;height:160px;border-radius:var(--radius-sm);background:var(--glass-strong);display:flex;align-items:center;justify-content:center;margin-bottom:20px;overflow:hidden;position:relative}
.feature-icon img{width:100%;height:100%;object-fit:cover;transition:.4s}
.feature-glass:hover .feature-icon img{transform:scale(1.05)}
.feature-glass h3{font-size:16px;font-weight:700;margin-bottom:10px;text-align:center}
.feature-glass p{font-size:13px;color:var(--fg-dim);line-height:1.8;text-align:center}
/* 关于 */
.about{display:flex;flex-direction:column;gap:40px;align-items:center}
.about-img{width:100%;max-width:720px;background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:var(--radius);overflow:hidden;padding:8px;order:-1}
.about-img img{border-radius:var(--radius-sm);width:100%;display:block}
.about-text{width:100%;max-width:920px}
.about-text h3{font-family:var(--font-display);font-size:clamp(22px,3vw,32px);font-weight:700;margin-bottom:20px;text-align:center}
.about-text p{font-size:14px;color:var(--fg-dim);line-height:2;margin-bottom:24px}
.about-list{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
@media(max-width:768px){.about-list{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.about-list{grid-template-columns:1fr}}
.about-list-item{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:20px 16px;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;transition:.3s}
.about-list-item:hover{background:var(--glass-strong);transform:translateY(-4px);border-color:rgba(124,58,237,.3)}
.about-list-label{font-size:18px;font-weight:700;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.about-list-desc{font-size:12px;color:var(--fg-dim);line-height:1.6}
/* 产品 */
.products{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:28px}
.product-glass{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:var(--radius);overflow:hidden;transition:.4s;position:relative}
.product-glass.featured{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),0 8px 40px rgba(124,58,237,.2);transform:translateY(-4px)}
.product-glass.featured::before{content:'推荐';position:absolute;top:0;right:0;z-index:2;background:linear-gradient(135deg,var(--accent),#a78bfa);color:#fff;font-size:12px;font-weight:600;padding:4px 14px;border-radius:0 0 0 12px}
.product-glass:hover{transform:translateY(-8px);background:var(--glass-strong);box-shadow:0 20px 50px rgba(124,58,237,.15)}
.product-img{aspect-ratio:1/1;overflow:hidden;position:relative}
.product-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.product-glass:hover .product-img img{transform:scale(1.06)}
.product-body{padding:32px 28px}
.product-body h3{font-family:var(--font-display);font-size:22px;font-weight:700;margin-bottom:12px}
.product-body .price{font-size:13px;color:var(--fg-dim);line-height:1.8;margin-bottom:20px}
.product-list{list-style:none;margin-bottom:24px}
.product-list li{font-size:12px;padding:5px 0;color:var(--fg-dim);display:flex;gap:8px}
.product-list li::before{content:'◈';color:var(--accent2);font-size:10px;flex-shrink:0}
.product-list li.hot{color:var(--accent3);font-weight:500}
.product-list li.hot::before{color:var(--accent3)}
.product-btn{display:block;text-align:center;padding:13px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;transition:.3s}
.btn-primary{background:linear-gradient(135deg,var(--accent),#a78bfa);color:#fff}
.btn-primary:hover{box-shadow:0 4px 16px rgba(124,58,237,.4)}
.price-from{font-size:0.65em;font-weight:400;color:var(--fg-dim);margin-left:2px}
/* CTA */
.cta{max-width:1240px;margin:0 auto 80px;padding:0 40px}
.cta-glass{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:28px;padding:64px 40px;text-align:center;position:relative;overflow:hidden}
.cta-glass::before{content:'';position:absolute;top:-50%;left:0;width:200%;height:200%;background:conic-gradient(from 0deg,rgba(124,58,237,.1),rgba(6,182,212,.1),rgba(236,72,153,.1),rgba(124,58,237,.1));animation:spin 20s linear infinite;z-index:-1}
.cta-glass h2{font-family:var(--font-display);font-size:clamp(22px,3vw,34px);font-weight:700;margin-bottom:16px;position:relative}
.cta-glass p{font-size:14px;color:var(--fg-dim);margin-bottom:32px;position:relative}
.cta-glass .hero-btns{position:relative;justify-content:center}
/* Logo墙 */
.logo-wall{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
@media(max-width:768px){.logo-wall{grid-template-columns:repeat(2,1fr)}}
.logo-item{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:20px;display:flex;align-items:center;justify-content:center;transition:.3s;aspect-ratio:1/1}
.logo-item:hover{background:var(--glass-strong);transform:translateY(-4px)}
.logo-item img{width:80%;height:80%;max-width:100px;max-height:100px;object-fit:contain;opacity:.7;transition:.3s}
.logo-item:hover img{opacity:1}
/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:768px){.faq-grid{grid-template-columns:1fr}}
.faq-glass{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:24px 28px;transition:.3s}
.faq-glass:hover{background:var(--glass-strong)}
.faq-glass h4{font-size:14px;color:var(--accent2);margin-bottom:10px;font-weight:700}
.faq-glass p{font-size:13px;color:var(--fg-dim);line-height:1.8}
.faq-glass p a{color:var(--accent2);text-decoration:underline;text-underline-offset:2px}
.faq-glass p a:hover{color:var(--accent3)}
/* 集群链接 */
.cluster{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.cluster-item{background:var(--glass);backdrop-filter:blur(var(--blur));-webkit-backdrop-filter:blur(var(--blur));border:1px solid var(--glass-border);border-left:3px solid var(--accent);border-radius:var(--radius-sm);padding:20px 24px;transition:.3s;display:block}
.cluster-item:hover{background:var(--glass-strong);border-left-color:var(--accent3)}
.cluster-item h4{font-size:15px;font-weight:700;color:var(--accent2);margin-bottom:6px}
.cluster-item p{font-size:13px;color:var(--fg-dim)}
/* 页脚 */
.footer{padding:60px 40px 32px}
.footer-inner{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;margin-bottom:40px}
.footer-col h3{font-family:var(--font-display);font-size:13px;font-weight:700;color:var(--accent2);margin-bottom:16px}
.footer-col p,.footer-col li{font-size:12px;color:var(--fg-dim);line-height:2;list-style:none}
.footer-col a{transition:.3s}
.footer-col a:hover{color:var(--accent2)}
.footer-qr{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:16px;text-align:center;margin-bottom:12px}
.footer-qr img{width:100%;max-width:120px;margin:0 auto 8px;border-radius:8px}
.footer-bottom{max-width:1240px;margin:0 auto;padding-top:24px;border-top:1px solid var(--glass-border);text-align:center;font-size:11px;color:var(--fg-mute);line-height:2}
.footer-bottom a{color:var(--fg-mute);text-decoration:underline}