:root {
  --bg: #04060e;
  --line: rgba(148, 163, 216, 0.14);
  --text: #e9eeff;
  --muted: #9aa7c7;
  --cyan: #01ffe2;
  --sky: #00bdf6;
  --blue: #018bfe;
  --violet: #7658fd;
  --radius: 18px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(600px 400px at 15% -10%, rgba(1, 139, 254, 0.18), transparent 60%),
    radial-gradient(700px 500px at 90% 0%, rgba(118, 88, 253, 0.14), transparent 60%),
    radial-gradient(500px 400px at 60% 110%, rgba(1, 255, 226, 0.07), transparent 60%);
}

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

.skip {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 100;
  background: var(--cyan);
  color: #04101c;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
}
.skip:focus { left: 8px; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(4, 6, 14, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}
.brand img { width: 28px; height: 28px; display: block; }

.nav ul, .footer-links { display: flex; gap: 26px; list-style: none; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; transition: color 0.2s; }
.nav a:hover, .nav a:focus { color: var(--text); }

/* Hero */
.hero { padding: 110px 0 90px; text-align: center; }

.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(1, 255, 226, 0.35);
  color: var(--cyan);
  background: rgba(1, 255, 226, 0.06);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 22px 0 20px;
}

.grad {
  background: linear-gradient(90deg, var(--cyan), var(--sky) 35%, var(--blue) 65%, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede { max-width: 660px; margin: 0 auto 36px; color: var(--muted); font-size: 1.15rem; }

.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: #04101c;
  font-weight: 700;
  padding: 13px 26px;
  border-radius: 12px;
  text-decoration: none;
  box-shadow: 0 8px 30px rgba(1, 189, 246, 0.25);
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(1, 189, 246, 0.35); }

.btn.ghost {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  box-shadow: none;
}
.btn.ghost:hover { border-color: rgba(0, 189, 246, 0.45); box-shadow: none; }

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

.section-head { max-width: 660px; margin: 0 auto 48px; text-align: center; }

.kicker {
  display: block;
  color: var(--sky);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 10px;
}

h2 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); letter-spacing: -0.01em; margin-bottom: 12px; font-weight: 800; }
.sub { color: var(--muted); }

/* Cards */
.grid, .approach-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 18px; }

.card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.card::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(1, 255, 226, 0.5), transparent);
  opacity: 0;
  transition: opacity 0.25s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 189, 246, 0.45);
  box-shadow: 0 14px 40px rgba(1, 139, 254, 0.15);
}
.card:hover::after { opacity: 1; }

.card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(1, 139, 254, 0.12);
  border: 1px solid rgba(0, 189, 246, 0.25);
  color: var(--sky);
  margin-bottom: 16px;
}
.card .icon img { width: 22px; height: 22px; display: block; }

.card h3 { font-size: 1.12rem; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 0.95rem; }

.card .num {
  position: absolute;
  top: 20px;
  right: 22px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(154, 167, 199, 0.5);
}

.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.chip {
  border: 1px solid rgba(118, 88, 253, 0.4);
  background: rgba(118, 88, 253, 0.08);
  color: #cbc0ff;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
}

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 36px 0; }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer p { color: var(--muted); font-size: 0.9rem; }
.footer-links { gap: 20px; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover, .footer-links a:focus { color: var(--text); }

@media (max-width: 640px) {
  .hero { padding: 80px 0 60px; }
  .section { padding: 60px 0; }
  .nav ul { gap: 16px; }
  .nav a { font-size: 0.88rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}