:root {
  --bg: #0b1120;
  --bg-alt: #0f172a;
  --surface: #16213b;
  --border: #24304f;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --aurora-1: #34d399;
  --aurora-2: #22d3ee;
  --aurora-grad: linear-gradient(100deg, var(--aurora-1), var(--aurora-2));
  --radius: 12px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: "Sora", "Inter", sans-serif;
  line-height: 1.15;
  margin: 0 0 0.5em;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.narrow { max-width: 760px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Sora", sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--aurora-grad);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.6);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--aurora-grad);
  color: #06231c !important;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(34, 211, 238, 0.35);
}

.btn-small { padding: 8px 18px; font-size: 0.9rem; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text) !important;
}

.btn-ghost:hover { box-shadow: none; border-color: var(--aurora-2); }

/* Hero */
.hero {
  position: relative;
  padding: 110px 0 90px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto;
  height: 130%;
  background:
    radial-gradient(ellipse 55% 45% at 25% 20%, rgba(52, 211, 153, 0.18), transparent 65%),
    radial-gradient(ellipse 50% 40% at 75% 10%, rgba(34, 211, 238, 0.15), transparent 65%);
  pointer-events: none;
}

.hero .container { position: relative; }

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  letter-spacing: -0.02em;
}

.accent {
  background: var(--aurora-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  max-width: 620px;
  font-size: 1.15rem;
  color: var(--text-dim);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

/* Sections */
.section { padding: 80px 0; }

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-size: 1.9rem;
  margin-bottom: 32px;
}

/* Service cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--aurora-1);
  transform: translateY(-2px);
}

.card h3 { font-size: 1.15rem; }

.card p {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin: 0;
}

/* Concept section */
.definition {
  border-left: 3px solid var(--aurora-1);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px;
  font-size: 1.08rem;
}

.pillars {
  display: grid;
  gap: 12px;
  margin-top: 28px;
  color: var(--text-dim);
}

.pillar {
  display: flex;
  align-items: baseline;
  gap: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
}

.pillar strong { color: var(--text); }

.pillar-num {
  font-family: "Sora", sans-serif;
  font-weight: 700;
  background: var(--aurora-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Approach steps */
.steps {
  margin: 0;
  padding-left: 1.4em;
  display: grid;
  gap: 16px;
  color: var(--text-dim);
}

.steps li::marker {
  color: var(--aurora-1);
  font-weight: 700;
}

.steps strong { color: var(--text); }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.contact-item {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: border-color 0.15s ease;
}

.contact-item:hover { border-color: var(--aurora-2); }

.contact-label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--aurora-1);
  margin-bottom: 4px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer a { color: var(--text-dim); }
.site-footer a:hover { color: var(--text); }

/* Error page */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 24px;
}

@media (max-width: 600px) {
  .hero { padding: 70px 0 60px; }
  .nav-links a:not(.btn) { display: none; }
}