*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#0066ff;
  --primary-dark:#0052cc;
  --accent:#00c087;
  --bg:#0a0e17;
  --bg-card:#121826;
  --bg-section:#0f1420;
  --text:#e8ecf4;
  --text-muted:#8b95a8;
  --border:#1e2738;
  --radius:12px;
  --shadow:0 8px 32px rgba(0,0,0,.35);
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,14,23,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700;color:var(--text)}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem;color:#fff}
.nav{display:flex;gap:28px;list-style:none}
.nav a{color:var(--text-muted);font-size:.95rem}
.nav a:hover,.nav a.active{color:var(--text)}
.header-btns{display:flex;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 22px;border-radius:8px;font-size:.95rem;font-weight:600;border:none;cursor:pointer;transition:all .2s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-lg{padding:14px 32px;font-size:1.05rem}
.mobile-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer}

/* Hero */
.hero{padding:80px 0 60px;background:radial-gradient(ellipse at 50% 0%,rgba(0,102,255,.15) 0%,transparent 60%)}
.hero-content{text-align:center;max-width:780px;margin:0 auto}
.hero h1{font-size:2.8rem;font-weight:800;line-height:1.25;margin-bottom:20px;background:linear-gradient(135deg,#fff 30%,var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:1.1rem;color:var(--text-muted);margin-bottom:12px}
.update-time{font-size:.85rem;color:var(--text-muted);margin-bottom:32px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Sections */
section{padding:64px 0}
.section-alt{background:var(--bg-section)}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:2rem;font-weight:700;margin-bottom:12px}
.section-title p{color:var(--text-muted);max-width:600px;margin:0 auto}

/* Cards Grid */
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-4px);border-color:var(--primary)}
.card-icon{width:48px;height:48px;background:linear-gradient(135deg,rgba(0,102,255,.2),rgba(0,192,135,.2));border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:16px}
.card h3{font-size:1.15rem;margin-bottom:12px}
.card p,.card li{color:var(--text-muted);font-size:.92rem}
.card ul{list-style:none;margin-top:12px}
.card ul li{padding:4px 0;padding-left:18px;position:relative}
.card ul li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;background:var(--accent);border-radius:50%}

/* Download Cards */
.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:28px}
.download-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;text-align:center}
.download-card .platform{font-size:2.5rem;margin-bottom:12px}
.download-card h3{font-size:1.25rem;margin-bottom:16px}
.download-card ul{text-align:left;margin:16px 0 24px;list-style:none}
.download-card ul li{padding:6px 0;padding-left:20px;position:relative;color:var(--text-muted);font-size:.9rem}
.download-card ul li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.step-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;position:relative}
.step-num{font-size:2.5rem;font-weight:800;color:rgba(0,102,255,.25);margin-bottom:8px}
.step-card h3{font-size:1.1rem;margin-bottom:12px}
.step-card p,.step-card li{color:var(--text-muted);font-size:.9rem}
.step-card ul{list-style:none;margin-top:10px}
.step-card ul li{padding:3px 0;padding-left:16px;position:relative}
.step-card ul li::before{content:"·";position:absolute;left:4px;color:var(--primary);font-weight:700}

/* Stats */
.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:center;margin-top:40px}
.stat-item{padding:24px;background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border)}
.stat-num{font-size:2rem;font-weight:800;color:var(--accent)}
.stat-label{color:var(--text-muted);font-size:.9rem;margin-top:4px}

/* Articles */
.article-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.article-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .2s}
.article-item:hover{transform:translateY(-3px);border-color:var(--primary)}
.article-body{padding:24px}
.article-body h3{font-size:1.1rem;margin-bottom:10px}
.article-body h3 a{color:var(--text)}
.article-body h3 a:hover{color:var(--primary)}
.article-body p{color:var(--text-muted);font-size:.9rem;margin-bottom:12px}
.article-meta{font-size:.8rem;color:var(--text-muted)}

/* Article Page */
.article-page{padding:48px 0 80px}
.article-page h1{font-size:2rem;margin-bottom:16px;line-height:1.35}
.article-page .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 14px;color:var(--text)}
.article-content h3{font-size:1.1rem;margin:24px 0 10px}
.article-content p{margin-bottom:16px;color:var(--text-muted)}
.article-content ul,.article-content ol{margin:12px 0 16px 24px;color:var(--text-muted)}
.article-content li{margin-bottom:6px}
.article-content blockquote{border-left:3px solid var(--primary);padding:12px 20px;margin:20px 0;background:rgba(0,102,255,.06);border-radius:0 8px 8px 0;color:var(--text-muted)}

/* Footer */
.site-footer{background:var(--bg-section);border-top:1px solid var(--border);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:32px;margin-bottom:32px}
.footer-col h4{font-size:.95rem;margin-bottom:14px;color:var(--text)}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:var(--text-muted);font-size:.88rem}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--border);color:var(--text-muted);font-size:.82rem}

/* Breadcrumb */
.breadcrumb{padding:16px 0;font-size:.88rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 8px}

/* Page Header */
.page-header{padding:48px 0 32px;text-align:center;background:radial-gradient(ellipse at 50% 0%,rgba(0,102,255,.1) 0%,transparent 70%)}
.page-header h1{font-size:2.2rem;margin-bottom:12px}
.page-header p{color:var(--text-muted);max-width:640px;margin:0 auto}

/* Responsive */
@media(max-width:768px){
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg);flex-direction:column;padding:16px 20px;border-bottom:1px solid var(--border);gap:12px}
  .nav.open{display:flex}
  .mobile-toggle{display:block}
  .hero h1{font-size:2rem}
  .stats-row{grid-template-columns:1fr}
  .header-btns .btn-outline{display:none}
}