:root {
  --bg: #0b0c10;
  --bg-alt: #0f1117;
  --text: #e6e6e6;
  --muted: #a2a2a2;
  --primary: #0A84FF;
  --primary-600: #0066cc;
  --card: #12141c;
  --soft: #141722;
  --border: #222431;
  --shadow: 0 10px 30px rgba(0,0,0,.25);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-alt: #f6f8fb;
    --text: #0b0c10;
    --muted: #5a5f6a;
    --primary: #0A84FF;
    --primary-600: #0066cc;
    --card: #ffffff;
    --soft: #ffffff;
    --border: #e6e8ef;
    --shadow: 0 8px 24px rgba(2, 6, 23, .06);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, blinkmacsystemfont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 800px at 80% -10%, rgba(10,132,255,.15), transparent 60%), var(--bg);
  line-height: 1.6;
}

.container {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg), transparent 10%);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; }
.brand-text { font-weight: 600; letter-spacing: .5px; }
.nav-links { display: flex; align-items: center; gap: 16px; }
.nav-links a { color: var(--text); text-decoration: none; opacity: .9; }
.nav-links a:hover { opacity: 1; }

/* Hero */
.hero { padding: 72px 0 48px; position: relative; }
.hero-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; }
.hero-copy h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.2; margin: 0 0 14px; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 20px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-art { position: relative; min-height: 280px; }
.orb { position: absolute; right: 10%; top: 10%; width: 220px; height: 220px; border-radius: 50%; background: radial-gradient(circle at 30% 30%, #3aa3ff, #0A84FF 35%, #0047b3 70%); filter: blur(6px) saturate(120%); box-shadow: var(--shadow); opacity: .75; }
.grid { position: absolute; inset: 0 0 0 0; background: linear-gradient( to bottom, rgba(255,255,255,.06), transparent 50% ), repeating-linear-gradient(90deg, transparent 0 39px, rgba(255,255,255,.06) 39px 40px), repeating-linear-gradient(0deg, transparent 0 39px, rgba(255,255,255,.06) 39px 40px); mask: radial-gradient(400px 260px at 30% 40%, #000 40%, transparent 70%); border-radius: 14px; }

/* Sections */
.section { padding: 64px 0; }
.section.alt { background: var(--bg-alt); }
.section-title { font-size: 24px; margin: 0 0 20px; }

/* Grids & Cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0 0 12px; color: var(--muted); }
.card-soft { background: var(--soft); }
.list { padding-left: 18px; margin: 0; color: var(--muted); }
.list li { margin: 6px 0; }

/* Tech */
.tech { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tech-item { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px; }
.tech-item h3 { margin: 0 0 8px; font-size: 16px; }
.tech-item p { margin: 0; color: var(--muted); }

/* Info blocks */
.info { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.info-item { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr; }
.contact-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; box-shadow: var(--shadow); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-alt); }
.footer { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; flex-wrap: wrap; gap: 12px; }
.legal { margin: 0; color: var(--muted); font-size: 14px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 38px; padding: 0 14px; border-radius: 10px; border: 1px solid var(--border); text-decoration: none; color: var(--text); background: transparent; transition: background .2s, border-color .2s, transform .06s; }
.btn:hover { border-color: color-mix(in oklab, var(--primary), white 40%); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); border-color: transparent; color: white; }
.btn-primary:hover { background: color-mix(in oklab, var(--primary), white 10%); }
.btn-ghost { background: transparent; }
.btn-sm { height: 34px; padding: 0 12px; font-size: 14px; }

/* Responsive */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .tech { grid-template-columns: 1fr 1fr; }
  .info { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .grid-3, .grid-4, .tech { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hero { padding-top: 56px; }
}