:root{
  --bg:#0a0a0a;--panel:#111315;--muted:#9ca3af;--text:#ffffff;
  --brand1:#10b981;--brand2:#22d3ee;--border:rgba(255,255,255,.08)
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji"}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin-inline:auto;padding-inline:1rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.15rem;border-radius:14px;font-weight:600;background:#fff;color:#0a0a0a;border:1px solid #e5e7eb}
.btn.secondary{background:#0f172a;color:#fff;border:1px solid var(--border)}
.chip{display:inline-flex;align-items:center;gap:.5rem;padding:.35rem .6rem;border:1px solid var(--border);border-radius:10px;background:#0f1112;color:#cbd5e1;font-size:.8rem}
header.sticky{position:sticky;top:0;backdrop-filter:saturate(120%) blur(10px);background:rgba(10,10,10,.6);z-index:50;border-bottom:1px solid var(--border)}
nav a{font-size:.95rem;color:#e5e7eb;padding:.25rem .25rem}
nav a:hover{color:#fff}
.announcement{background:linear-gradient(90deg,var(--brand1),var(--brand2));color:#0b1220;text-align:center;font-weight:600;padding:.55rem}
.hero{position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20%;background:
  radial-gradient(ellipse at 20% -10%,rgba(34,211,238,.18),transparent 45%),
  radial-gradient(ellipse at 80% 10%,rgba(16,185,129,.18),transparent 40%)}
.grid{display:grid;gap:1rem}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media(min-width:900px){
  .grid-2{grid-template-columns:1.1fr .9fr}
  .grid-3{grid-template-columns:repeat(3,1fr)}
}
.card{border:1px solid var(--border);background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));border-radius:22px;padding:1.1rem}
.stat{border:1px solid var(--border);background:#0d1012;border-radius:16px;padding:1rem;text-align:center}
.kpi{font-weight:800;font-size:1.6rem}
section{padding:4.5rem 0}
h1{font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.05;margin:0}
h2{font-size:clamp(1.6rem,3.6vw,2.4rem);margin:0 0 .6rem}
h3{margin:0 0 .6rem}
p{color:#d1d5db;line-height:1.7}
.muted{color:var(--muted)}
.logo-dot{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand1),var(--brand2))}
.divider{height:1px;background:var(--border);margin:2rem 0}
/* Footer */
footer{border-top:1px solid var(--border)}
footer a{color:#cbd5e1}
footer a:hover{color:#fff}
/* Chat widget */
.chat-button{position:fixed;right:24px;bottom:24px;border-radius:999px;padding:.85rem 1rem;border:none;cursor:pointer;font-weight:700;display:flex;align-items:center;gap:8px;color:#0a0a0a;background:linear-gradient(90deg,var(--brand1),var(--brand2));box-shadow:0 10px 30px rgba(16,185,129,.35)}
.chat-panel{position:fixed;right:24px;bottom:96px;width:360px;max-width:calc(100vw - 48px);border:1px solid var(--border);border-radius:16px;background:#0f1112;box-shadow:0 20px 60px rgba(0,0,0,.5);display:none}
.chat-header{display:flex;align-items:center;justify-content:space-between;padding:.8rem 1rem;border-bottom:1px solid var(--border)}
.chat-body{height:260px;padding:1rem;overflow:auto}
.chat-input{display:flex;gap:.5rem;padding:.75rem;border-top:1px solid var(--border)}
.chat-input input{flex:1;background:#0c0f11;border:1px solid var(--border);border-radius:10px;padding:.6rem;color:#fff}
.msg{font-size:.9rem;background:#0c0f11;border:1px solid var(--border);padding:.6rem .75rem;border-radius:12px;max-width:85%}
.msg.bot{background:#0b1320;border-color:#163049}
/* Animations */
.fade-in{animation:fade .7s ease both}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}