:root {
  --bg: #ffffff;
  --bg-soft: #f6f3ff;
  --text: #1b1530;
  --muted: #5d5873;
  --line: #e6e1f5;
  --brand-1: #7c3aed;
  --brand-2: #ec4899;
  --card: #ffffff;
  --shadow: 0 10px 30px rgba(76, 29, 149, .08);
  --radius: 18px;
  --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #110d1d;
    --bg-soft: #1a1430;
    --text: #f3f0ff;
    --muted: #b2abc9;
    --line: #2c2447;
    --card: #191329;
    --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--brand-1); }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* шапка */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top .wrap { 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: 18px; color: var(--text); text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.top nav { display: flex; gap: 20px; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--text); }

/* кнопки */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 22px;
  border-radius: 14px; font-weight: 700; font-size: 16px; text-decoration: none; transition: transform .15s, box-shadow .15s; }
.btn-main { color: #fff; background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
  box-shadow: 0 8px 24px rgba(124, 58, 237, .35); }
.btn-main:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(124, 58, 237, .45); }
.btn-ghost { color: var(--text); border: 1px solid var(--line); background: var(--card); }

/* первый экран */
.hero { padding: 72px 0 56px; background:
  radial-gradient(1200px 400px at 85% -10%, rgba(236, 72, 153, .16), transparent 60%),
  radial-gradient(900px 400px at 0% 0%, rgba(124, 58, 237, .16), transparent 60%); }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.tag { display: inline-block; padding: 6px 12px; border-radius: 999px; background: var(--bg-soft);
  color: var(--brand-1); font-weight: 700; font-size: 13px; letter-spacing: .02em; }
h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.1; margin: 16px 0; letter-spacing: -.02em; }
.grad { background: linear-gradient(135deg, var(--brand-1), var(--brand-2)); -webkit-background-clip: text;
  background-clip: text; color: transparent; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; max-width: 34em; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.note { margin-top: 14px; font-size: 14px; color: var(--muted); }

/* макет телефона */
.phone { justify-self: center; width: min(300px, 80vw); aspect-ratio: 9 / 18.5; border-radius: 38px; padding: 12px;
  background: #0f0b1a; box-shadow: 0 30px 60px rgba(17, 13, 29, .35); }
.screen { height: 100%; border-radius: 28px; overflow: hidden; position: relative;
  background: linear-gradient(160deg, #7c3aed, #ec4899); display: flex; flex-direction: column; }
.screen .bars { display: flex; gap: 4px; padding: 14px 14px 0; }
.screen .bars i { flex: 1; height: 3px; border-radius: 3px; background: rgba(255, 255, 255, .45); }
.screen .bars i:first-child { background: #fff; }
.screen .center { flex: 1; display: grid; place-items: center; }
.screen .center img { width: 46%; border-radius: 22%; filter: drop-shadow(0 10px 20px rgba(0,0,0,.25)); }
.screen .chips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; padding: 0 12px 22px; }
.screen .chips span { padding: 6px 10px; border-radius: 999px; background: rgba(255,255,255,.18); color: #fff;
  font-size: 12px; font-weight: 700; backdrop-filter: blur(6px); }

/* секции */
section { padding: 64px 0; }
section.soft { background: var(--bg-soft); }
h2 { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.2; margin: 0 0 12px; letter-spacing: -.01em; }
.sub { color: var(--muted); margin: 0 0 32px; font-size: 17px; max-width: 40em; }
.grid { display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card h3 { margin: 10px 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; font-size: 22px;
  background: linear-gradient(135deg, rgba(124,58,237,.14), rgba(236,72,153,.14)); }

.steps { counter-reset: s; display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); }
.step { position: relative; padding: 22px 22px 22px 70px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); }
.step::before { counter-increment: s; content: counter(s); position: absolute; left: 20px; top: 20px; width: 34px; height: 34px;
  border-radius: 10px; display: grid; place-items: center; color: #fff; font-weight: 800;
  background: linear-gradient(135deg, var(--brand-1), var(--brand-2)); }
.step h3 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }

.platforms { display: flex; flex-wrap: wrap; gap: 12px; }
.platform { display: flex; align-items: center; gap: 10px; padding: 12px 18px; border-radius: 14px; background: var(--card);
  border: 1px solid var(--line); font-weight: 700; }
.platform small { font-weight: 500; color: var(--muted); }
.dot { width: 10px; height: 10px; border-radius: 50%; }

.contacts dl { display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px; margin: 0; }
.contacts dt { color: var(--muted); }
.contacts dd { margin: 0; font-weight: 600; word-break: break-word; }

/* документы */
.doc { padding: 48px 0 72px; }
.doc .wrap { max-width: 820px; }
.doc h1 { font-size: clamp(28px, 4vw, 40px); }
.doc h2 { font-size: 22px; margin-top: 32px; }
.doc p, .doc li { color: var(--text); }
.doc .meta { color: var(--muted); }

footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; }
footer nav { display: flex; flex-wrap: wrap; gap: 16px; }
footer a { color: var(--muted); }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .phone { order: -1; width: min(240px, 66vw); }
  .grid, .steps { grid-template-columns: 1fr; }
  .top nav { display: none; }
  .hero { padding: 40px 0 40px; }
  section { padding: 48px 0; }
}