:root {
  --ink: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --bg: #ffffff;
  --soft: #f8fafc;
  --a: #4f46e5;
  --b: #06b6d4;
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #e2e8f0; --muted: #94a3b8; --line: #1e293b; --bg: #0b1120; --soft: #111827; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 17px/1.6 Inter, "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
a { color: inherit; }

.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; text-decoration: none; }
nav { display: flex; align-items: center; gap: 20px; }
nav a { text-decoration: none; color: var(--muted); }
nav a:hover { color: var(--ink); }
@media (max-width: 720px) { nav a:not(.btn) { display: none; } }

.btn {
  display: inline-block; padding: 14px 24px; border-radius: 12px; border: 0;
  background: linear-gradient(135deg, var(--a), var(--b)); color: #fff !important;
  font-weight: 700; text-decoration: none; transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgb(79 70 229 / .3); }
.btn-sm { padding: 10px 16px; font-size: 15px; }
.btn-ghost { background: transparent; color: var(--ink) !important; border: 2px solid var(--line); }

.hero { padding: 88px 0 72px; background: radial-gradient(1000px 400px at 80% -10%, rgb(6 182 212 / .15), transparent), radial-gradient(800px 400px at 0% 0%, rgb(79 70 229 / .15), transparent); }
.kicker { color: var(--a); font-weight: 700; margin: 0 0 12px; }
h1 { font-size: clamp(34px, 6vw, 58px); line-height: 1.1; margin: 0 0 20px; max-width: 820px; letter-spacing: -0.02em; }
.lead { font-size: 20px; color: var(--muted); max-width: 680px; margin: 0 0 32px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }

section.wrap { padding-top: 72px; }
h2 { font-size: clamp(28px, 4vw, 38px); margin: 0 0 8px; letter-spacing: -0.01em; }
.sub { color: var(--muted); margin: 0 0 28px; max-width: 720px; }
.notice { background: var(--soft); border: 1px dashed var(--line); padding: 12px 16px; border-radius: 12px; }

.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.card { background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 8px; }
.card h3 { margin: 0; font-size: 21px; }
.card p { margin: 0; color: var(--muted); }
.card .btn { margin-top: auto; align-self: flex-start; }
.card .emoji { font-size: 34px; }
.price { color: var(--ink) !important; font-weight: 800; margin-top: auto !important; padding-top: 8px; }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; max-width: 760px; }
.steps li { counter-increment: s; position: relative; padding: 16px 16px 16px 64px; background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); color: var(--muted); }
.steps li b { color: var(--ink); }
.steps li::before { content: counter(s); position: absolute; left: 16px; top: 14px; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 800; background: linear-gradient(135deg, var(--a), var(--b)); }

.contact { text-align: center; padding-bottom: 24px; }
.contact .sub { margin-left: auto; margin-right: auto; }
.foot { display: flex; align-items: center; gap: 8px; justify-content: center; color: var(--muted); font-size: 14px; padding: 48px 16px; }

/* Ссылка на кейс под кнопкой демо */
.case-link { display: inline-block; margin-top: 10px; font-size: 14px; opacity: .85; }