:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --bg-deep: #0e1430;
  --ink: #161a2b;
  --ink-soft: #4a5168;
  --line: #e4e8f2;
  --brand: #3b51e0;
  --brand-deep: #2336b8;
  --brand-soft: #eef1ff;
  --accent: #16c79a;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(20, 28, 70, 0.08);
  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 15px;
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--ink-soft); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; font-size: 26px; cursor: pointer; color: var(--ink); }

.btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .05s ease, box-shadow .2s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-deep); box-shadow: var(--shadow); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-lg { padding: 14px 28px; font-size: 16px; }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(1200px 500px at 80% -10%, var(--brand-soft), transparent 60%),
              linear-gradient(180deg, #fff, var(--bg-soft));
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--line);
}
.hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 18px;
  max-width: 760px;
}
.hero p.lead {
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--ink-soft);
  max-width: 620px;
  margin: 0 0 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.eyebrow {
  display: inline-block;
  background: var(--brand-soft);
  color: var(--brand-deep);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}

/* ---------- Sections ---------- */
section { padding: 72px 0; }
.section-head { max-width: 640px; margin: 0 0 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-size: clamp(26px, 3.6vw, 38px);
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
.section-head p { font-size: 18px; color: var(--ink-soft); margin: 0; }
.bg-soft { background: var(--bg-soft); }

/* ---------- Cards / grid ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #d4dbef; }
.card .ico {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--brand-soft);
  display: grid; place-items: center;
  font-size: 22px;
  margin-bottom: 18px;
}
.card h3 { margin: 0 0 10px; font-size: 19px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--ink-soft); font-size: 15px; }
.card .price { margin-top: 16px; font-weight: 700; color: var(--brand-deep); }

.stat { text-align: center; }
.stat .num { font-size: 40px; font-weight: 800; color: var(--brand-deep); letter-spacing: -0.02em; }
.stat .lbl { color: var(--ink-soft); font-size: 15px; }

/* ---------- Steps ---------- */
.steps { counter-reset: step; }
.step { position: relative; padding-left: 56px; }
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--brand); color: #fff;
  display: grid; place-items: center;
  font-weight: 700;
}
.step h3 { margin: 4px 0 8px; font-size: 18px; }
.step p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--bg-deep), #1c2a6e);
  color: #fff;
  border-radius: 20px;
  padding: 56px;
  text-align: center;
}
.cta-band h2 { font-size: clamp(26px, 3.6vw, 36px); margin: 0 0 12px; letter-spacing: -0.02em; }
.cta-band p { color: #c7cef0; font-size: 18px; margin: 0 0 28px; }
.cta-band .btn-primary { background: #fff; color: var(--brand-deep); }
.cta-band .btn-primary:hover { background: #eef1ff; }

/* ---------- Legal / content pages ---------- */
.page-hero {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  padding: 56px 0;
}
.page-hero h1 { font-size: clamp(30px, 4.4vw, 44px); margin: 0 0 8px; letter-spacing: -0.02em; }
.page-hero p { color: var(--ink-soft); margin: 0; font-size: 17px; }
.prose { max-width: 760px; margin: 0 auto; padding: 56px 0; }
.prose h2 { font-size: 24px; margin: 40px 0 14px; letter-spacing: -0.01em; }
.prose h3 { font-size: 18px; margin: 26px 0 10px; }
.prose p, .prose li { color: var(--ink-soft); font-size: 16px; }
.prose ul { padding-left: 22px; }
.prose .meta { color: var(--ink-soft); font-size: 14px; font-style: italic; }
.prose a { font-weight: 500; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-family: inherit;
  font-size: 15px;
  background: #fff;
}
.field input:focus, .field textarea:focus { outline: 2px solid var(--brand); border-color: var(--brand); }
.info-row { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.info-row .ico { font-size: 22px; }
.info-row strong { display: block; }
.info-row span { color: var(--ink-soft); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-deep);
  color: #aeb6dd;
  padding: 56px 0 28px;
  margin-top: 40px;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 40px; }
.site-footer .brand { color: #fff; }
.site-footer p { font-size: 14px; max-width: 280px; }
.site-footer h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: .05em; margin: 0 0 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: #aeb6dd; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 13px; color: #8089b5;
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-band { padding: 40px 24px; }
}
@media (max-width: 620px) {
  .nav-links {
    display: none;
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 24px; }
  .nav-toggle { display: block; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  section { padding: 48px 0; }
}