/* Minimal modern CSS (no frameworks) */
:root{
  --bg: #ffffff;
  --fg: #111111;
  --muted: #6b7280;
  --border: #e5e7eb;
  --card: #ffffff;
  --accent: #111111;
  --accent-contrast: #ffffff;
}
html.dark{
  --bg: #0a0a0a;
  --fg: #f5f5f5;
  --muted: #a3a3a3;
  --border: #27272a;
  --card: #0b0b0b;
  --accent: #f5f5f5;
  --accent-contrast: #0a0a0a;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}
.container{max-width: 1200px; margin: 0 auto; padding: 0 16px;}
.section{padding: 72px 0;}
h1,h2,h3{line-height:1.2;margin:0}
h1{font-size: clamp(2rem, 2.5vw + 1rem, 3rem);font-weight: 800;letter-spacing:-.02em}
h2{font-size: clamp(1.5rem, 1.2vw + .8rem, 2rem);font-weight: 700}
h3{font-size: 1.125rem;font-weight:700}
p{margin: 12px 0;color: var(--fg)}
small,.muted{color: var(--muted)}
a{color: inherit;text-decoration: none}
a.underline{text-decoration: underline}
hr{border:0;border-top:1px solid var(--border);margin:24px 0}

/* Header */
.header{
  position: sticky; top:0; z-index:50;
  backdrop-filter: blur(6px);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0;}
.nav .brand{font-weight:700;font-size: 1.1rem;letter-spacing:.2px}
.nav .links{display:none;gap:18px;align-items:center}
.nav .links a{font-size:.92rem;opacity:.9}
.nav .links a:hover{opacity:.7}
.nav .menu-btn{border:1px solid var(--border);padding:6px 10px;border-radius:10px;background:transparent}
@media (min-width: 768px){ .nav .links{display:flex} .nav .menu-btn{display:none} }
.mobile-menu{display:grid;gap:8px;padding-bottom:12px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:12px;padding:10px 16px;font-weight:600;
  border:1px solid var(--border); background: transparent; cursor:pointer;}
.btn.primary{background: var(--accent); color: var(--accent-contrast); border-color: var(--accent)}
.btn:hover{opacity:.9}

/* Cards & grid */
.card{background: var(--card); border:1px solid var(--border); border-radius:16px; padding:20px; box-shadow: 0 1px 0 rgba(0,0,0,.02)}
.grid{display:grid; gap:20px}
.grid.cols-2{grid-template-columns: repeat(2, minmax(0,1fr))}
.grid.cols-3{grid-template-columns: repeat(3, minmax(0,1fr))}
.grid.cols-4{grid-template-columns: repeat(4, minmax(0,1fr))}
@media (max-width: 1024px){ .grid.cols-4{grid-template-columns: repeat(2, minmax(0,1fr))} }
@media (max-width: 640px){ .grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns: 1fr} }

.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);border-radius:999px;padding:6px 10px;font-size:.75rem;color:var(--muted)}

/* Forms */
input,textarea{width:100%;border:1px solid var(--border);background:transparent;color:var(--fg);border-radius:12px;padding:10px 12px}
label{font-size:.9rem}
.form-row{display:grid;gap:10px}

/* Footer */
.footer{border-top:1px solid var(--border); padding: 36px 0}
.footer .links{display:flex;flex-wrap:wrap;gap:12px;font-size:.9rem}
.footer .links a{color:inherit;text-decoration:underline}

/* Hero */
.hero{
  background: linear-gradient(to bottom, var(--bg), color-mix(in srgb, var(--bg) 70%, #eee 30%));
}
.kpis{display:grid;gap:16px;grid-template-columns: repeat(4, minmax(0,1fr))}
.kpi{ text-align:center; border:1px solid var(--border); border-radius:16px; padding:18px; background: var(--card) }
.kpi .num{ font-size: 1.75rem; font-weight:800 }
.kpi .lbl{ font-size: .9rem; color: var(--muted) }

/* Testimonial */
.testimonial{position:relative; overflow:hidden}
.dots{display:flex;gap:6px;margin-left:auto}
.dot{width:20px;height:6px;border-radius:999px;background:#d4d4d4}
html.dark .dot{background:#404040}
.dot.active{background: var(--fg)}