:root{
  --bg:#FFFFFF;
  --surface:#F7FAFC;
  --text:#0F172A;
  --muted:#475569;
  --primary:#2C7BE5;
  --primary600:#1F6AD6;
  --primary700:#1458C4;
  --accent:#00B894;
  --border:#E2E8F0;
  --radius:16px;
  --shadow:0 10px 28px rgba(16,24,40,0.08);
  --font:ui-sans-serif, -apple-system, BlinkMacSystemFont, Inter, Roboto, Helvetica, Arial;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.6 var(--font)}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary700)}
.wrap{max-width:1140px;margin:0 auto;padding:24px}

/* Header */
header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.84);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.logo{width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px rgba(44,123,229,.65)}
.menu{display:flex;gap:14px;flex-wrap:wrap}
.menu a{padding:8px 10px;border-radius:10px;color:var(--muted)}
.menu a.active{color:#fff;background:var(--primary)}
.cta{padding:10px 14px;border-radius:12px;background:var(--primary);color:#fff;font-weight:700}
.cta:hover{background:var(--primary600)}

/* Common */
main{padding-top:28px}
h1{font-size:40px;line-height:1.2;margin:0 0 8px}
h2{margin:0 0 8px;font-size:24px}
p.lead{color:var(--muted)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.grid{display:grid;gap:20px}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1000px){.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:800px){.cols-2,.cols-3{grid-template-columns:1fr}}
.feature h3{margin:6px 0 4px;font-size:18px}
.feature p{margin:0;color:var(--muted)}
.btn{display:inline-flex;gap:10px;align-items:center;padding:10px 16px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--primary);font-weight:600}
.btn.primary{background:var(--primary);color:#fff;border:none}
.btn.ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.note{color:var(--muted);font-size:13px}
.hero{display:grid;gap:24px;align-items:center;grid-template-columns:1.1fr .9fr}
@media (max-width:900px){.hero{grid-template-columns:1fr}}
.screen{aspect-ratio:16/10;border-radius:16px;border:1px dashed var(--border);background:linear-gradient(180deg,#ffffff,#f5fbff);display:flex;align-items:center;justify-content:center;color:var(--muted)}
.badge{display:inline-flex;gap:8px;align-items:center;font-size:12px;color:#0f3d2e;background:#E6FFFA;border:1px solid #CFFAFE;padding:6px 10px;border-radius:999px}
.kv{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:900px){.kv{grid-template-columns:1fr}}
.icon{width:28px;height:28px;border-radius:8px;background:#EFF6FF;color:var(--primary);display:grid;place-items:center;border:1px solid var(--border)}
.list{margin:0;padding-left:18px}
.list li{margin:6px 0;color:var(--muted)}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}
td,th{padding:10px;border-bottom:1px solid var(--border);text-align:left}
thead th{background:#F1F5F9;color:#0F172A}
footer{margin-top:36px;border-top:1px solid var(--border);color:var(--muted)}
footer .foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:22px 0}