:root {
  --bg: #ffffff;
  --bg-alt: #f5f6f8;
  --text: #14161a;
  --muted: #5b6270;
  --border: #e2e5ea;
  --accent: #2f5bea;
  --accent-text: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --bg-alt: #171a20;
    --text: #eef0f4;
    --muted: #9aa2b1;
    --border: #262b34;
    --accent: #6d8dff;
    --accent-text: #0f1115;
  }
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}
.nav nav { display: flex; gap: 20px; }
.nav nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav nav a:hover { color: var(--text); }
.brand { font-weight: 700; color: var(--text); text-decoration: none; font-size: 18px; }

main, .footer { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

.hero { padding: 88px 0 72px; max-width: 760px; }
.eyebrow { color: var(--accent); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; font-size: 13px; margin: 0 0 12px; }
h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.1; margin: 0 0 20px; }
.lead { font-size: 20px; color: var(--muted); margin: 0 0 32px; }
h2 { font-size: 30px; margin: 0 0 24px; }
h3 { margin: 0 0 8px; font-size: 20px; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 16px;
}
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn.primary:hover { opacity: .9; }
.btn.ghost:hover { background: var(--bg-alt); }

.section { padding: 56px 0; border-top: 1px solid var(--border); }
.section.alt { background: var(--bg-alt); margin: 0 -24px; padding: 56px 24px; }

.steps { padding-left: 20px; margin: 0; }
.steps li { margin-bottom: 12px; }

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

.card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  background: var(--bg);
}
.card p { color: var(--muted); margin: 0 0 12px; }
.num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--accent); color: var(--accent-text);
  font-weight: 700; margin-bottom: 12px;
}

.plan { display: flex; flex-direction: column; }
.plan .btn { margin-top: auto; text-align: center; }
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.duration { font-size: 14px; text-transform: uppercase; letter-spacing: .05em; }
.price { font-size: 40px; font-weight: 700; color: var(--text) !important; margin: 4px 0 12px !important; }

.toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 999px; padding: 4px; margin-bottom: 24px; }
.toggle button {
  border: 0; background: transparent; color: var(--muted);
  padding: 8px 18px; border-radius: 999px; font: inherit; font-size: 15px; cursor: pointer;
}
.toggle button.active { background: var(--accent); color: var(--accent-text); }

.note { color: var(--muted); font-size: 14px; margin-top: 20px; }

details { border-bottom: 1px solid var(--border); padding: 14px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }

.footer { padding: 32px 24px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--border); }

@media (max-width: 860px) {
  .grid.three, .grid.four { grid-template-columns: 1fr; }
  .nav nav { gap: 12px; }
  .hero { padding: 56px 0 48px; }
}