*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#6366f1;
  --primary-dark:#4f46e5;
  --primary-light:#818cf8;
  --bg:#0f0f1a;
  --bg-card:#1a1a2e;
  --bg-card-hover:#22223a;
  --text:#e2e8f0;
  --text-muted:#94a3b8;
  --border:#2d2d4a;
  --gradient:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#a78bfa 100%);
  --radius:12px;
  --shadow:0 4px 24px rgba(99,102,241,.15);
}
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;min-height:100vh}
a{color:var(--primary-light);text-decoration:none;transition:color .2s}
a:hover{color:#c4b5fd}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,15,26,.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:1.25rem;font-weight:700;color:var(--text)}
.logo-icon{width:36px;height:36px;border-radius:8px;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:1.1rem}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{color:var(--text-muted);font-size:.95rem;font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:8px;font-weight:600;font-size:.95rem;border:none;cursor:pointer;transition:all .2s}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 32px rgba(99,102,241,.35);color:#fff}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary-light)}
.btn-lg{padding:14px 32px;font-size:1.05rem}

/* Hero */
.hero{padding:100px 0 80px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 50% 0%,rgba(99,102,241,.12) 0%,transparent 60%);pointer-events:none}
.hero-badge{display:inline-block;padding:6px 16px;border-radius:20px;background:rgba(99,102,241,.15);color:var(--primary-light);font-size:.85rem;font-weight:500;margin-bottom:24px;border:1px solid rgba(99,102,241,.25)}
.hero h1{font-size:3rem;font-weight:800;line-height:1.2;margin-bottom:20px;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.15rem;color:var(--text-muted);max-width:640px;margin:0 auto 36px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.stats{display:flex;justify-content:center;gap:48px;margin-top:64px;flex-wrap:wrap}
.stat-item{text-align:center}
.stat-num{font-size:2rem;font-weight:800;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:.85rem;color:var(--text-muted);margin-top:4px}

/* Sections */
section{padding:80px 0}
.section-header{text-align:center;margin-bottom:48px}
.section-header .label{display:inline-block;color:var(--primary-light);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:12px}
.section-header h2{font-size:2rem;font-weight:700;margin-bottom:12px}
.section-header p{color:var(--text-muted);max-width:600px;margin:0 auto}

/* Feature Grid */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:all .3s}
.feature-card:hover{background:var(--bg-card-hover);border-color:rgba(99,102,241,.3);transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-icon{font-size:2rem;margin-bottom:16px}
.feature-card h3{font-size:1.1rem;font-weight:600;margin-bottom:10px}
.feature-card p{color:var(--text-muted);font-size:.9rem}

/* Platform Cards */
.platform-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.platform-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;text-align:center;transition:all .3s}
.platform-card:hover{border-color:rgba(99,102,241,.3);transform:translateY(-4px)}
.platform-icon{font-size:3rem;margin-bottom:16px}
.platform-card h3{font-size:1.25rem;margin-bottom:8px}
.platform-card p{color:var(--text-muted);font-size:.9rem;margin-bottom:20px}
.platform-version{display:inline-block;padding:4px 12px;border-radius:6px;background:rgba(99,102,241,.1);color:var(--primary-light);font-size:.8rem;margin-bottom:16px}

/* Architecture */
.arch-flow{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;padding:40px 0}
.arch-node{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px 32px;text-align:center;min-width:160px}
.arch-node .icon{font-size:1.8rem;margin-bottom:8px}
.arch-node h4{font-size:.95rem;font-weight:600}
.arch-node span{font-size:.8rem;color:var(--text-muted)}
.arch-arrow{color:var(--primary-light);font-size:1.5rem}

/* Reviews */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.review-stars{color:#fbbf24;font-size:1rem;margin-bottom:12px;letter-spacing:2px}
.review-text{color:var(--text-muted);font-size:.95rem;font-style:italic;margin-bottom:20px;line-height:1.8}
.review-author{display:flex;align-items:center;gap:12px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;color:#fff}
.review-name{font-weight:600;font-size:.9rem}
.review-role{font-size:.8rem;color:var(--text-muted)}

/* FAQ */
.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-question{width:100%;padding:20px 24px;background:none;border:none;color:var(--text);font-size:1rem;font-weight:600;text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-question:hover{color:var(--primary-light)}
.faq-question .toggle{font-size:1.2rem;color:var(--primary-light);transition:transform .3s}
.faq-item.open .faq-question .toggle{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-answer{max-height:300px}
.faq-answer p{padding:0 24px 20px;color:var(--text-muted);font-size:.95rem}

/* CTA */
.cta-section{text-align:center;padding:80px 0;background:linear-gradient(180deg,transparent,rgba(99,102,241,.06))}
.cta-section h2{font-size:2rem;margin-bottom:12px}
.cta-section p{color:var(--text-muted);margin-bottom:28px}

/* Footer */
.site-footer{border-top:1px solid var(--border);padding:48px 0 24px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-brand p{color:var(--text-muted);font-size:.9rem;margin-top:12px;max-width:300px}
.footer-col h4{font-size:.9rem;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:var(--text-muted);font-size:.85rem}
.footer-col a:hover{color:var(--primary-light)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--border);color:var(--text-muted);font-size:.8rem}

/* Articles */
.page-hero{padding:60px 0 40px;text-align:center}
.page-hero h1{font-size:2.2rem;font-weight:700;margin-bottom:12px}
.page-hero p{color:var(--text-muted);max-width:600px;margin:0 auto}
.article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px;padding:40px 0 80px}
.article-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .3s}
.article-card:hover{border-color:rgba(99,102,241,.3);transform:translateY(-4px);box-shadow:var(--shadow)}
.article-card-body{padding:24px}
.article-tag{display:inline-block;padding:3px 10px;border-radius:4px;background:rgba(99,102,241,.12);color:var(--primary-light);font-size:.75rem;font-weight:500;margin-bottom:12px}
.article-card h3{font-size:1.15rem;font-weight:600;margin-bottom:10px}
.article-card h3 a{color:var(--text)}
.article-card h3 a:hover{color:var(--primary-light)}
.article-card p{color:var(--text-muted);font-size:.9rem;margin-bottom:16px}
.article-meta{display:flex;gap:16px;font-size:.8rem;color:var(--text-muted)}
.daily-update-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:6px;background:rgba(34,197,94,.12);color:#4ade80;font-size:.75rem;font-weight:500}

/* Article Detail */
.article-content{max-width:800px;margin:0 auto;padding:40px 24px 80px}
.article-content h1{font-size:2rem;margin-bottom:16px}
.article-content .meta{display:flex;gap:20px;color:var(--text-muted);font-size:.85rem;margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.article-content h2{font-size:1.4rem;margin:36px 0 16px;color:var(--text)}
.article-content h3{font-size:1.15rem;margin:28px 0 12px}
.article-content p{margin-bottom:16px;color:var(--text-muted);line-height:1.9}
.article-content ul,.article-content ol{margin:0 0 16px 24px;color:var(--text-muted)}
.article-content li{margin-bottom:8px;line-height:1.8}
.article-content code{background:rgba(99,102,241,.1);padding:2px 8px;border-radius:4px;font-size:.9em;color:var(--primary-light)}
.article-content pre{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:20px;overflow-x:auto;margin-bottom:16px}
.article-content pre code{background:none;padding:0}
.daily-tip-box{background:var(--bg-card);border:1px solid rgba(99,102,241,.25);border-radius:var(--radius);padding:24px;margin:32px 0}
.daily-tip-box h3{font-size:1rem;color:var(--primary-light);margin-bottom:10px}

/* Download Page */
.download-hero{padding:80px 0 40px;text-align:center}
.download-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;padding:20px 0 80px}
.download-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:36px;text-align:center;transition:all .3s}
.download-card:hover{border-color:rgba(99,102,241,.3);transform:translateY(-4px)}
.download-card .os-icon{font-size:3.5rem;margin-bottom:16px}
.download-card h3{font-size:1.3rem;margin-bottom:8px}
.download-card .ver{color:var(--text-muted);font-size:.85rem;margin-bottom:8px}
.download-card .req{color:var(--text-muted);font-size:.85rem;margin-bottom:24px}
.download-steps{max-width:700px;margin:0 auto 80px}
.download-steps h2{text-align:center;font-size:1.5rem;margin-bottom:32px}
.step-item{display:flex;gap:20px;margin-bottom:24px;align-items:flex-start}
.step-num{width:36px;height:36px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;flex-shrink:0}
.step-content h4{font-size:1rem;margin-bottom:6px}
.step-content p{color:var(--text-muted);font-size:.9rem}

/* Sitemap Page */
.sitemap-list{max-width:700px;margin:0 auto;padding:40px 0 80px}
.sitemap-list h2{font-size:1.3rem;margin:32px 0 16px;color:var(--primary-light)}
.sitemap-list ul{list-style:none}
.sitemap-list li{margin-bottom:10px}
.sitemap-list a{color:var(--text-muted);font-size:.95rem}
.sitemap-list a:hover{color:var(--primary-light)}

/* Mobile */
.menu-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer}
@media(max-width:768px){
  .menu-toggle{display:block}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg);flex-direction:column;padding:20px 24px;border-bottom:1px solid var(--border);gap:16px}
  .nav-links.open{display:flex}
  .hero h1{font-size:2rem}
  .stats{gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .arch-flow{flex-direction:column}
  .arch-arrow{transform:rotate(90deg)}
}