:root{
  --bg:#fafafa;--card:#ffffff;--border:#eaeaea;--text:#111;--muted:#555;
  --primary:#2563eb;--primary-600:#1d4ed8;--green:#10b981;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans";background:var(--bg);color:var(--text)}
.container{max-width:1040px;margin:0 auto;padding:0 16px}
.header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.menu{display:flex;gap:16px;align-items:center}
.menu a{color:#333;text-decoration:none;font-weight:500}
.hero{padding:56px 0;text-align:center;}
h1{font-size:2.5rem;margin:0 0 8px}
h2{font-size:1.8rem;margin:40px 0 16px; border-bottom: 1px solid var(--border); padding-bottom: 8px;}
.muted{color:var(--muted)}
.actions{display:flex;gap:12px;margin-top:24px; justify-content:center;}
.btn{display:inline-block;background:var(--primary);color:#fff;padding:12px 24px;border-radius:8px;text-decoration:none;border:1px solid var(--primary); font-size: 1rem;}
.btn:hover{background:var(--primary-600)}
.btn-outline{background:#fff;color:#111;border:1px solid var(--border)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px}
.list{padding-left:18px; line-height: 1.8;}
.footer{margin-top:48px;padding:32px 0;border-top:1px solid var(--border);background:#f1f5f9; text-align:center;}
.copyright{color:#666;font-size:14px;}