:root {
  --bg: #0b0f19;
  --bg-elev: #121826;
  --bg-card: #151b2b;
  --border: #232b3d;
  --text: #e6ebf5;
  --text-dim: #9aa6bd;
  --accent: #4f7cff;
  --accent-2: #7c5cff;
  --accent-soft: rgba(79, 124, 255, 0.12);
  --radius: 14px;
  --maxw: 1120px;
  --shadow: 0 10px 40px -12px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 25, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
}
.brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav__links a {
  color: var(--text-dim);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.15s ease;
}
.nav__links a:hover { color: var(--text); }
.nav__cta {
  padding: 9px 18px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
}
.nav__cta:hover { background: #3f6bf0; }
.nav__toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 110px 0 96px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 62%);
  z-index: 0;
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(79, 124, 255, 0.25);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 26px;
}
.hero h1 {
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.05;
  font-weight: 800;
  margin: 0 0 22px;
  letter-spacing: -0.02em;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p {
  font-size: clamp(17px, 2.2vw, 20px);
  color: var(--text-dim);
  margin: 0 0 38px;
  max-width: 620px;
}
.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); background: var(--accent-soft); }

/* ---------- Sections ---------- */
section { position: relative; }
.section { padding: 90px 0; }
.section--alt { background: var(--bg-elev); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section__head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}
.section__head .eyebrow { margin-bottom: 18px; }
.section__head h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.section__head p {
  color: var(--text-dim);
  font-size: 17px;
  margin: 0;
}

/* ---------- Services grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(79, 124, 255, 0.4); }
.card__icon {
  width: 52px;
  height: 52px;
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.card h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 10px;
}
.card p {
  color: var(--text-dim);
  font-size: 15px;
  margin: 0;
}

/* ---------- Process ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}
.step {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
}
.step__num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 14px;
  display: block;
}
.step h3 { font-size: 18px; margin: 0 0 8px; font-weight: 700; }
.step p { color: var(--text-dim); font-size: 14px; margin: 0; }

/* ---------- Tech ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-bottom: 48px;
}
.feature {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.feature__ic {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 17px;
}
.feature h4 { margin: 2px 0 4px; font-size: 16px; font-weight: 700; }
.feature p { margin: 0; color: var(--text-dim); font-size: 14px; }

.tech-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.chip {
  padding: 9px 18px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
}

/* ---------- CTA ---------- */
.cta {
  text-align: center;
  background: linear-gradient(135deg, rgba(79,124,255,0.14), rgba(124,92,255,0.14));
  border: 1px solid rgba(79, 124, 255, 0.3);
  border-radius: 20px;
  padding: 64px 32px;
}
.cta h2 { font-size: clamp(26px, 4vw, 38px); font-weight: 800; margin: 0 0 14px; }
.cta p { color: var(--text-dim); font-size: 17px; margin: 0 0 32px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin: 0 0 16px;
}
.footer-col p, .footer-col a {
  color: var(--text-dim);
  font-size: 15px;
  margin: 0 0 10px;
  display: block;
  transition: color 0.15s ease;
}
.footer-col a:hover { color: var(--accent); }
.footer-brand p { max-width: 300px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 14px;
}

/* ---------- Legal pages ---------- */
.legal {
  max-width: 780px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}
.legal h1 { font-size: clamp(30px, 5vw, 44px); font-weight: 800; margin: 0 0 8px; }
.legal .updated { color: var(--text-dim); font-size: 14px; margin-bottom: 40px; }
.legal h2 { font-size: 21px; font-weight: 700; margin: 36px 0 12px; }
.legal h3 { font-size: 17px; font-weight: 700; margin: 24px 0 8px; }
.legal p, .legal li { color: var(--text-dim); font-size: 16px; }
.legal ul { padding-left: 22px; }
.legal a { color: var(--accent); }
.legal .back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
  color: var(--text-dim);
  font-weight: 500;
}
.legal .back:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid, .steps, .features { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav__links { display: none; }
  .grid, .steps, .features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero { padding: 80px 0 70px; }
  .section { padding: 64px 0; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}