:root {
  --bg: #0f172a; /* slate-900 */
  --surface: #111827; /* gray-900 */
  --text: #e5e7eb; /* gray-200 */
  --muted: #94a3b8; /* slate-400 */
  --primary: #22d3ee; /* cyan-400 */
  --accent: #a78bfa; /* violet-400 */
  --ring: rgba(34, 211, 238, 0.5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', Arial, sans-serif; background: var(--bg); color: var(--text); }

.container { width: min(1100px, 92vw); margin: 0 auto; }
.section { padding: 4rem 0; }
.section.alt { background: #0b1220; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.75rem; }
p { color: var(--text); opacity: 0.92; }
.lead { font-size: 1.25rem; color: var(--muted); }

.btn { padding: 0.65rem 1rem; border-radius: 999px; border: 1px solid transparent; color: #0b1220; background: var(--text); font-weight: 600; }
.btn.primary { background: var(--primary); color: #081322; }
.btn.ghost { background: transparent; border-color: var(--muted); color: var(--text); }

.skip-link { position: absolute; left: -999px; top: -999px; }
.skip-link:focus { left: 1rem; top: 1rem; background: var(--accent); color: #0b1220; padding: 0.5rem 0.75rem; border-radius: 6px; }

.site-header { position: sticky; top: 0; backdrop-filter: blur(12px); background: rgba(8, 19, 34, 0.7); border-bottom: 1px solid #111827; z-index: 1000; }
.header-inner { display: flex; align-items: center; gap: 1rem; justify-content: space-between; padding: 0.75rem 0; }
.brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; color: var(--text); text-decoration: none; }
.nav-toggle { display: none; }
.nav-list { display: flex; gap: 1rem; list-style: none; margin: 0; padding: 0; }
.nav-list a { color: var(--muted); text-decoration: none; padding: 0.5rem; }
.nav-list a:hover { color: var(--text); }

@media (max-width: 800px) {
  .nav-toggle { display: inline-flex; background: transparent; border: 1px solid #1f2937; color: var(--text); padding: 0.5rem 0.75rem; border-radius: 8px; }
  .nav-list { display: none; position: absolute; right: 1rem; top: 60px; background: #0b1220; border: 1px solid #1f2937; border-radius: 12px; padding: 0.75rem; width: min(300px, 92vw); flex-direction: column; }
  .nav-list.open { display: flex; }
}

.hero { padding: 5rem 0 3rem; background: radial-gradient(1200px 500px at 10% -10%, rgba(167,139,250,0.25), transparent), radial-gradient(1200px 500px at 90% -10%, rgba(34,211,238,0.25), transparent); }
.cta-group { display: flex; gap: 0.75rem; margin-top: 1rem; }

.cards { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding: 0; margin: 2rem 0 0; }
.card { background: #0c1526; border: 1px solid #1f2937; border-radius: 12px; padding: 1rem; }

.grid.two { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.grid.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 1rem 0 0; }
.steps > li { position: relative; padding-left: 2.75rem; margin: 0.75rem 0; }
.steps > li::before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: 0; width: 2rem; height: 2rem; display: grid; place-items: center; border-radius: 999px; background: var(--accent); color: #0b1220; font-weight: 700; }

.accordion { display: grid; gap: 0.5rem; }
.accordion-item { border: 1px solid #1f2937; border-radius: 10px; background: #0c1526; }
.accordion-header { width: 100%; text-align: left; background: transparent; color: var(--text); padding: 0.75rem 1rem; border: 0; border-bottom: 1px solid #1f2937; }
.accordion-panel { display: none; padding: 0.75rem 1rem; color: var(--muted); }
.accordion-panel.open { display: block; }

.contact-form label { display: grid; gap: 0.25rem; color: var(--muted); }
.contact-form input, .contact-form textarea { background: #0b1220; border: 1px solid #1f2937; color: var(--text); padding: 0.65rem 0.75rem; border-radius: 8px; }
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid var(--ring); }

.site-footer { border-top: 1px solid #1f2937; padding: 2rem 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.footer-inner a { color: var(--muted); text-decoration: none; }
.footer-inner a:hover { color: var(--text); }

@media (max-width: 1000px) { .cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) {
  .cards { grid-template-columns: 1fr; }
  .grid.two { grid-template-columns: 1fr; }
}