:root {
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --maxw: 1080px;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }
.center { text-align: center; }
.muted { color: var(--muted); }

h1, h2, h3 { color: var(--ink); line-height: 1.2; margin: 0 0 16px; }
h2 { font-size: 30px; }
h3 { font-size: 20px; }
p { margin: 0 0 16px; }
a { color: var(--accent-dark); }

.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.wordmark { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }

.btn {
  display: inline-block;
  font-weight: 600;
  text-decoration: none;
  border-radius: 10px;
  padding: 12px 20px;
  transition: background 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-dark); }
.btn--ghost { color: var(--ink); border: 1px solid var(--border); background: #fff; }
.btn--ghost:hover { border-color: var(--muted); }
.btn--small { padding: 9px 14px; font-size: 14px; background: var(--accent); color: #fff; }
.btn--small:hover { background: var(--accent-dark); }
.btn--lg { padding: 15px 28px; font-size: 18px; }

.hero { padding: 96px 0 72px; }
.hero__title { font-size: 48px; letter-spacing: -0.02em; max-width: 900px; }
.hero__sub { font-size: 20px; color: var(--muted); max-width: 640px; margin-bottom: 32px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.section { padding: 72px 0; }
.section--alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.card__num {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; margin-bottom: 16px;
}

.checklist { list-style: none; padding: 0; margin: 0 0 16px; }
.checklist li { position: relative; padding-left: 30px; margin-bottom: 12px; }
.checklist li::before {
  content: "\2713";
  position: absolute; left: 0; top: 0;
  color: var(--accent); font-weight: 700;
}

.founder p { font-size: 18px; }

.cta { padding: 88px 0; background: var(--ink); color: #cbd5e1; }
.cta h2 { color: #fff; }
.cta p { color: #cbd5e1; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta .btn--primary { margin-top: 12px; }

.footer { padding: 32px 0; border-top: 1px solid var(--border); }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

@media (max-width: 820px) {
  .steps { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 48px; }
  .hero__title { font-size: 34px; }
  .hero__sub { font-size: 18px; }
  h2 { font-size: 26px; }
}