:root {
  --bg: #0b1220;
  --bg-soft: #111c30;
  --card: #16233b;
  --ink: #e8eef7;
  --muted: #9fb0c7;
  --accent: #4cc4ff;
  --accent-2: #7c5cff;
  --line: #24344f;
  --radius: 14px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; font-size: 1.1rem; color: var(--ink); text-decoration: none; }
.nav nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: .95rem; }
.nav nav a:hover { color: var(--accent); }

/* Hero */
.hero {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(124, 92, 255, .35), transparent),
    radial-gradient(900px 400px at 0% 0%, rgba(76, 196, 255, .25), transparent),
    var(--bg-soft);
  border-bottom: 1px solid var(--line);
  padding: 96px 0 80px;
}
.eyebrow { color: var(--accent); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; font-size: .8rem; margin: 0 0 12px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.1; margin: 0 0 16px; }
.lede { color: var(--muted); font-size: 1.15rem; max-width: 620px; margin: 0 0 28px; }

.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 999px; text-decoration: none; font-weight: 600; transition: transform .15s ease, box-shadow .15s ease; }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #06101f; }
.btn.ghost { border: 1px solid var(--line); color: var(--ink); }
.btn:hover { transform: translateY(-2px); }
.btn.primary:hover { box-shadow: 0 10px 30px rgba(76, 196, 255, .3); }

/* Blocks */
.block { padding: 64px 0; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin: 0 0 28px; }
h3 { margin: 0 0 8px; font-size: 1.15rem; }

.band { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card p { color: var(--muted); margin: 0; }

/* Checklist */
.checklist { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; }
.checklist li { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px 14px 44px; position: relative; color: var(--ink); }
.checklist li::before { content: "✓"; position: absolute; left: 16px; color: var(--accent); font-weight: 700; }

.note { color: var(--muted); border-left: 3px solid var(--accent-2); padding: 8px 0 8px 16px; margin: 0 0 24px; max-width: 720px; }

/* FAQ */
details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; margin-bottom: 12px; }
details summary { cursor: pointer; font-weight: 600; }
details[open] summary { color: var(--accent); margin-bottom: 8px; }
details p { color: var(--muted); margin: 0; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0; background: var(--bg-soft); }
.site-footer p { margin: 4px 0; }
.muted { color: var(--muted); font-size: .9rem; }