/* Tiarto landing — black / magenta high-end hardware vibe */
:root{
  --bg: #000000;
  --text: #ffffff;
  --muted: #b3b3b3;
  --accent: #ff00a8; /* magenta */
  --card: #0b0b0b;
  --card-border: rgba(255,255,255,0.08);
}

*{ box-sizing: border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height:1.6;
}

.container{
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav{
  position: sticky;
  top: 0;
  backdrop-filter: blur(6px);
  background: rgba(0,0,0,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 10;
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  height:64px;
}
.logo{ height:28px; display:block; }
.links a{
  color: var(--muted); text-decoration:none; margin-left:20px; font-size:14px;
}
.links a:hover{ color: var(--text); }
.links .cta{
  color: var(--text);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:999px; padding:8px 14px; margin-left:24px;
}
.hero{
  position: relative;
  min-height: 72vh;
  display:flex; align-items:center;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(255,0,168,0.16), transparent 60%),
    radial-gradient(700px 400px at 10% 20%, rgba(255,0,168,0.08), transparent 60%),
    var(--bg);
  overflow:hidden;
}
.bg-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 30%, rgba(0,0,0,0.9) 0%, rgba(0,0,0,1) 70%);
  opacity: 0.25;
}
.hero-inner{ position:relative; padding: 96px 0 48px; }
h1{
  font-size: clamp(36px, 6vw, 64px);
  line-height:1.1;
  letter-spacing:-0.02em;
  margin:0 0 12px;
}
.sub{
  color: var(--muted);
  font-size: clamp(16px, 2.2vw, 20px);
  margin:0 0 28px;
}
.actions{ display:flex; gap:12px; flex-wrap:wrap; }
.btn{
  display:inline-block;
  text-decoration:none;
  padding:12px 18px;
  border-radius:12px;
  font-weight:600;
  border:1px solid rgba(255,255,255,0.14);
}
.btn.primary{
  background: var(--accent);
  border-color: transparent;
  color:#000;
}
.btn.ghost{
  color: var(--text);
  background: transparent;
}
.section{ padding: 72px 0; }
.section.alt{ background: #060606; }
.section h2{
  font-size: clamp(24px, 3.6vw, 32px);
  margin:0 0 24px;
  letter-spacing:-0.01em;
}
.lead{ color: var(--muted); max-width: 72ch; }

.cards{
  display:grid; gap:16px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card{
  background: var(--card);
  border:1px solid var(--card-border);
  border-radius:16px;
  padding:20px;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover{
  transform: translateY(-2px);
  border-color: rgba(255,0,168,0.45);
  box-shadow: 0 10px 30px rgba(255,0,168,0.08);
}
.card h3{ margin: 0 0 8px; font-size:18px; }
.card p{ color: var(--muted); margin:0; }

.contact{ display:flex; gap:12px; align-items:center; flex-wrap:wrap; margin: 10px 0 6px; }
.sep{ color: var(--muted); }
.small{ font-size: 12px; }
.dim{ color: var(--muted); }

.footer{
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 18px 0;
  background: #050505;
}
.footer-inner{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  font-size: 14px;
}
.foot-links a{ color: var(--muted); text-decoration:none; margin-left:16px; }
.foot-links a:hover{ color: var(--text); }

@media (max-width: 720px){
  .nav-inner{ height:56px; }
  .links{ display:none; }
  .hero-inner{ padding: 72px 0 36px; }
  .br-md{ display:none; }
}