*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#6366f1;
  --primary-dark:#4f46e5;
  --accent:#06b6d4;
  --bg:#0f172a;
  --bg-card:#1e293b;
  --text:#f1f5f9;
  --text-muted:#94a3b8;
  --gradient:linear-gradient(135deg,#6366f1 0%,#06b6d4 100%);
  --radius:12px;
  --shadow:0 4px 24px rgba(99,102,241,.25);
}
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;font-size:16px}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:#22d3ee}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

.site-header{position:sticky;top:0;z-index:100;background:rgba(15,23,42,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(99,102,241,.2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:1.4rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.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-download{display:inline-block;padding:10px 24px;background:var(--gradient);color:#fff!important;border-radius:8px;font-weight:600;font-size:.9rem;box-shadow:var(--shadow)}
.btn-download:hover{opacity:.9;transform:translateY(-1px)}

.hero{padding:80px 0 60px;text-align:center;background:radial-gradient(ellipse at 50% 0%,rgba(99,102,241,.18) 0%,transparent 70%)}
.hero-badge{display:inline-block;padding:6px 16px;background:rgba(99,102,241,.15);border:1px solid rgba(99,102,241,.3);border-radius:20px;font-size:.85rem;color:var(--accent);margin-bottom:20px}
.hero h1{font-size:2.6rem;font-weight:800;line-height:1.3;margin-bottom:16px}
.hero h1 span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:1.1rem;color:var(--text-muted);max-width:640px;margin:0 auto 32px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{padding:14px 36px;background:var(--gradient);color:#fff;border-radius:10px;font-weight:700;font-size:1rem;border:none;cursor:pointer;box-shadow:var(--shadow);display:inline-block}
.btn-secondary{padding:14px 36px;background:transparent;color:var(--text);border:1px solid rgba(99,102,241,.4);border-radius:10px;font-weight:600;font-size:1rem;cursor:pointer;display:inline-block}
.btn-primary:hover,.btn-secondary:hover{opacity:.9;transform:translateY(-2px)}

section{padding:70px 0}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:2rem;font-weight:700;margin-bottom:10px}
.section-title p{color:var(--text-muted);font-size:1rem}

.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border:1px solid rgba(99,102,241,.15);border-radius:var(--radius);padding:28px;transition:transform .2s,box-shadow .2s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature-icon{font-size:2rem;margin-bottom:12px}
.feature-card h3{font-size:1.1rem;margin-bottom:8px}
.feature-card p{color:var(--text-muted);font-size:.9rem}

.stats-bar{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:20px;margin-top:48px}
.stat-item{text-align:center;padding:24px;background:var(--bg-card);border-radius:var(--radius);border:1px solid rgba(99,102,241,.1)}
.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{color:var(--text-muted);font-size:.85rem;margin-top:4px}

.scenario-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.scenario-item{background:var(--bg-card);border-radius:var(--radius);padding:24px;text-align:center;border:1px solid rgba(99,102,241,.1)}
.scenario-item .icon{font-size:2rem;margin-bottom:10px}
.scenario-item h4{font-size:1rem;margin-bottom:6px}
.scenario-item p{color:var(--text-muted);font-size:.85rem}

.review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.review-card{background:var(--bg-card);border-radius:var(--radius);padding:28px;border:1px solid rgba(99,102,241,.12)}
.review-stars{color:#fbbf24;font-size:1.1rem;margin-bottom:12px}
.review-text{color:var(--text-muted);font-style:italic;margin-bottom:12px;font-size:.95rem}
.review-author{color:var(--accent);font-size:.85rem}

.compare-table{width:100%;border-collapse:collapse;background:var(--bg-card);border-radius:var(--radius);overflow:hidden}
.compare-table th,.compare-table td{padding:16px 20px;text-align:center;border-bottom:1px solid rgba(99,102,241,.1)}
.compare-table th{background:rgba(99,102,241,.15);font-weight:600}
.compare-table td:first-child{text-align:left;font-weight:500}
.compare-win{color:#34d399;font-weight:600}

.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg-card);border-radius:var(--radius);margin-bottom:12px;border:1px solid rgba(99,102,241,.1);overflow:hidden}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600}
.faq-question::after{content:"+";font-size:1.4rem;color:var(--accent);transition:transform .2s}
.faq-item.open .faq-question::after{transform:rotate(45deg)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .3s,padding .3s;color:var(--text-muted);font-size:.95rem}
.faq-item.open .faq-answer{max-height:300px;padding:0 24px 18px}

.cta-banner{text-align:center;padding:48px;background:var(--bg-card);border-radius:var(--radius);border:1px solid rgba(99,102,241,.2);margin-top:40px}
.cta-banner h3{font-size:1.5rem;margin-bottom:12px}
.cta-banner p{color:var(--text-muted);margin-bottom:24px}

.download-hero{text-align:center;padding:60px 0 40px}
.platform-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;margin:40px 0}
.platform-card{background:var(--bg-card);border:1px solid rgba(99,102,241,.15);border-radius:var(--radius);padding:36px 24px;text-align:center;transition:transform .2s}
.platform-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.platform-icon{font-size:3rem;margin-bottom:16px}
.platform-card h3{margin-bottom:8px}
.platform-card p{color:var(--text-muted);font-size:.85rem;margin-bottom:20px}
.btn-platform{display:inline-block;padding:12px 32px;background:var(--gradient);color:#fff;border-radius:8px;font-weight:600}

.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin:40px 0}
.step-item{text-align:center;padding:24px}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;background:var(--gradient);border-radius:50%;font-weight:700;font-size:1.2rem;margin-bottom:12px;color:#fff}
.step-item h4{margin-bottom:6px}
.step-item p{color:var(--text-muted);font-size:.85rem}

.version-list{max-width:800px;margin:0 auto}
.version-item{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:var(--bg-card);border-radius:var(--radius);margin-bottom:10px;border:1px solid rgba(99,102,241,.1);flex-wrap:wrap;gap:10px}
.version-info h4{font-size:.95rem;margin-bottom:4px}
.version-info p{color:var(--text-muted);font-size:.85rem}
.btn-small{padding:8px 20px;background:var(--gradient);color:#fff;border-radius:6px;font-size:.85rem;font-weight:600}

.article-hero{padding:50px 0 30px}
.article-hero h1{font-size:2rem;margin-bottom:12px}
.article-meta{color:var(--text-muted);font-size:.85rem;margin-bottom:24px}
.article-content{max-width:800px;margin:0 auto;padding-bottom:60px}
.article-content h2{font-size:1.4rem;margin:32px 0 12px;color:var(--accent)}
.article-content h3{font-size:1.15rem;margin:24px 0 10px}
.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}
.article-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.article-card{background:var(--bg-card);border-radius:var(--radius);padding:28px;border:1px solid rgba(99,102,241,.12);transition:transform .2s}
.article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.article-card h3{font-size:1.1rem;margin-bottom:8px}
.article-card h3 a{color:var(--text)}
.article-card p{color:var(--text-muted);font-size:.9rem;margin-bottom:12px}
.article-date{color:var(--accent);font-size:.8rem}

.site-footer{background:var(--bg-card);border-top:1px solid rgba(99,102,241,.15);padding:40px 0 24px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;margin-bottom:32px}
.footer-col h4{margin-bottom:12px;font-size:1rem}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:var(--text-muted);font-size:.9rem}
.footer-bottom{text-align:center;color:var(--text-muted);font-size:.85rem;padding-top:24px;border-top:1px solid rgba(99,102,241,.1)}

.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-card);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid rgba(99,102,241,.2)}
  .nav-links.open{display:flex}
  .hero h1{font-size:1.8rem}
  section{padding:50px 0}
}