*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#2563eb;--primary-dark:#1d4ed8;--accent:#06b6d4;
  --bg:#0f172a;--bg-card:#1e293b;--text:#f1f5f9;--text-muted:#94a3b8;
  --border:#334155;--radius:12px;--shadow:0 4px 24px rgba(0,0,0,.3)
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:#67e8f9}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
header{background:rgba(15,23,42,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
nav{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo{font-size:1.35rem;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px}
.logo span{color:var(--accent)}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{color:var(--text-muted);font-size:.95rem}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.btn{display:inline-block;padding:12px 28px;border-radius:8px;font-weight:600;font-size:.95rem;transition:all .2s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,99,235,.4);color:#fff}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary);color:#fff}
.hero{padding:80px 0 60px;text-align:center;background:linear-gradient(180deg,#1e293b 0%,var(--bg) 100%)}
.hero-badge{display:inline-block;padding:6px 16px;background:rgba(37,99,235,.15);border:1px solid rgba(37,99,235,.3);border-radius:20px;font-size:.85rem;color:var(--accent);margin-bottom:20px}
.hero h1{font-size:2.6rem;line-height:1.3;margin-bottom:16px;background:linear-gradient(135deg,#fff,var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.1rem;color:var(--text-muted);max-width:640px;margin:0 auto 32px}
.hero-tags{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.hero-tags span{padding:6px 14px;background:var(--bg-card);border-radius:6px;font-size:.85rem;color:var(--text-muted)}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
section{padding:64px 0}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:2rem;margin-bottom:12px}
.section-title p{color:var(--text-muted);max-width:560px;margin:0 auto}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;transition:transform .2s,box-shadow .2s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-card .icon{font-size:2rem;margin-bottom:16px}
.feature-card h3{font-size:1.15rem;margin-bottom:10px}
.feature-card p{color:var(--text-muted);font-size:.92rem}
.stats-bar{display:flex;justify-content:center;gap:40px;flex-wrap:wrap;padding:40px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin:48px 0}
.stat-item{text-align:center}
.stat-item strong{display:block;font-size:1.1rem;color:var(--accent)}
.stat-item span{font-size:.85rem;color:var(--text-muted)}
.platform-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.platform-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center}
.platform-card .icon{font-size:2.5rem;margin-bottom:12px}
.nodes-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}
.node-card{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:20px;text-align:center}
.node-card h4{margin-bottom:4px;font-size:1rem}
.node-card p{font-size:.82rem;color:var(--text-muted)}
.reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.review-card p{color:var(--text-muted);font-style:italic;margin-bottom:12px;font-size:.92rem}
.review-card cite{font-size:.85rem;color:var(--accent);font-style:normal}
.faq-list{max-width:760px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;background:var(--bg-card)}
.faq-item summary{padding:18px 24px;cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:1.2rem;color:var(--accent)}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 24px 18px;color:var(--text-muted);font-size:.92rem}
.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;margin:40px 0}
.download-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;text-align:center}
.download-card .icon{font-size:3rem;margin-bottom:16px}
.download-card h3{margin-bottom:8px}
.download-card p{color:var(--text-muted);font-size:.88rem;margin-bottom:20px}
.article-list{display:grid;gap:20px}
.article-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.article-item h3{font-size:1.05rem}
.article-item .meta{font-size:.82rem;color:var(--text-muted)}
.article-content{max-width:780px;margin:0 auto}
.article-content h1{font-size:2rem;margin-bottom:12px}
.article-content .meta{color:var(--text-muted);font-size:.88rem;margin-bottom:32px;padding-bottom:20px;border-bottom:1px solid var(--border)}
.article-content h2{font-size:1.35rem;margin:32px 0 12px;color:var(--accent)}
.article-content p{margin-bottom:16px;color:var(--text-muted)}
.article-content ul,.article-content ol{margin:0 0 16px 24px;color:var(--text-muted)}
.article-content li{margin-bottom:8px}
.breadcrumb{padding:16px 0;font-size:.88rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--accent)}
footer{background:var(--bg-card);border-top:1px solid var(--border);padding:40px 0;margin-top:64px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.footer-links{display:flex;gap:24px;list-style:none}
.footer-links a{color:var(--text-muted);font-size:.88rem}
.footer-copy{color:var(--text-muted);font-size:.82rem}
@media(max-width:768px){
  .hero h1{font-size:1.8rem}
  .nav-links{gap:16px;font-size:.85rem}
  .stats-bar{gap:24px}
}