:root {
  --bg: #0b0f17;
  --bg-2: #111827;
  --card: #141b2a;
  --border: #1f2a3d;
  --text: #e6eaf2;
  --muted: #9aa6bb;
  --accent: #5b8cff;
  --accent-2: #22d3ee;
  --radius: 14px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: #fff; color: #000; padding: 8px 12px; z-index: 10; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 20px; letter-spacing: 0.04em; }
.logo:hover { text-decoration: none; }
.logo svg { width: 32px; height: 32px; }
.nav ul { list-style: none; display: flex; gap: 26px; margin: 0; padding: 0; align-items: center; }
.nav ul a { color: var(--muted); font-size: 15px; font-weight: 500; }
.nav ul a:hover, .nav ul a[aria-current="page"] { color: var(--text); text-decoration: none; }
.menu-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 6px 10px; font-size: 15px; }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px;
  font-weight: 600; font-size: 15px; border: 1px solid transparent; transition: transform .15s, background .15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--accent), #7c5cff); color: #fff; }
.btn-ghost { border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--bg-2); }
.nav .btn { padding: 8px 16px; color: #fff; }

/* Hero */
.hero { padding: 110px 0 90px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% -10% auto auto; width: 720px; height: 720px;
  background: radial-gradient(circle, rgba(91,140,255,.22), transparent 65%); pointer-events: none;
}
.eyebrow { color: var(--accent-2); font-weight: 600; font-size: 14px; letter-spacing: .12em; text-transform: uppercase; margin: 0 0 14px; }
h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1.08; margin: 0 0 22px; letter-spacing: -0.02em; }
h1 .grad { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 20px; color: var(--muted); max-width: 680px; margin: 0 0 34px; }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.page-hero { padding: 80px 0 40px; }
.page-hero h1 { font-size: clamp(32px, 5vw, 48px); }

/* Sections */
section { padding: 70px 0; }
section.alt { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
h2 { font-size: clamp(26px, 3.6vw, 36px); line-height: 1.2; margin: 0 0 14px; letter-spacing: -0.01em; }
h3 { font-size: 20px; margin: 0 0 8px; }
.section-intro { color: var(--muted); max-width: 680px; margin: 0 0 40px; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: border-color .2s;
}
.card:hover { border-color: #2e3d58; }
.card p { color: var(--muted); margin: 0; }
.card ul { color: var(--muted); padding-left: 18px; margin: 12px 0 0; }
.card li { margin-bottom: 4px; }
.icon {
  width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(91,140,255,.12); color: var(--accent); margin-bottom: 18px;
}
.icon svg { width: 22px; height: 22px; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 56px; }
.stat { border-left: 2px solid var(--accent); padding-left: 16px; }
.stat strong { display: block; font-size: 30px; line-height: 1.1; }
.stat span { color: var(--muted); font-size: 14px; }

/* Steps */
.steps { counter-reset: step; display: grid; gap: 20px; grid-template-columns: repeat(3, 1fr); }
.step { position: relative; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; font-weight: 700; color: var(--accent-2); font-size: 14px; letter-spacing: .1em; margin-bottom: 10px;
}

/* Tags */
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag { font-size: 13px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }

/* Prose */
.prose { max-width: 760px; }
.prose p, .prose li { color: #c5cddb; }
.prose h2 { margin-top: 44px; }

/* CTA band */
.cta-band {
  background: linear-gradient(135deg, rgba(91,140,255,.16), rgba(34,211,238,.10));
  border: 1px solid var(--border); border-radius: 20px; padding: 48px; text-align: center;
}
.cta-band p { color: var(--muted); max-width: 600px; margin: 0 auto 28px; }

/* Contact list */
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.contact-list li { display: flex; gap: 12px; align-items: center; }
.contact-list svg { width: 20px; height: 20px; color: var(--accent); flex: none; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 44px 0 30px; color: var(--muted); font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
.site-footer h4 { color: var(--text); font-size: 15px; margin: 0 0 12px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); }
.copyright { margin-top: 36px; font-size: 13px; }

@media (max-width: 900px) {
  .grid-3, .grid-4, .steps { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .grid-2, .grid-3, .grid-4, .steps, .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 70px 0 60px; }
  section { padding: 54px 0; }
  .cta-band { padding: 32px 20px; }
  .menu-toggle { display: block; }
  .nav ul {
    display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column;
    background: var(--bg); border-bottom: 1px solid var(--border); padding: 18px 20px 24px; gap: 16px; align-items: flex-start;
  }
  .nav ul.open { display: flex; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}