/* Parametric — website (dark) */

:root {
  --bg: #060911;
  --bg-2: #0A0E18;
  --surface: #111827;
  --surface-2: #161F31;
  --border: #1E2942;
  --border-soft: rgba(255, 255, 255, .07);

  --text: #EAEEF7;
  --muted: #8D96AB;
  --dim: #5B6479;

  --accent: #7C5CFF;
  --accent-2: #22D3EE;
  --accent-soft: rgba(124, 92, 255, .13);
  --long: #16C784;
  --short: #FF5A5F;

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;

  --maxw: 1140px;
  --nav-h: 70px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 24px); }

body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font); line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--accent-2); text-decoration: none; }
a:hover { color: #67E8F9; }

h1, h2, h3, h4 { line-height: 1.14; letter-spacing: -.028em; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(2.5rem, 5.4vw, 3.9rem); letter-spacing: -.04em; }
h2 { font-size: clamp(1.85rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1rem; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }
.section { padding: 92px 0; }
.section--alt { background: var(--bg-2); border-block: 1px solid var(--border-soft); }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: .76rem; font-weight: 600; letter-spacing: .09em; text-transform: uppercase;
  color: #B6A7FF; background: var(--accent-soft);
  border: 1px solid rgba(124, 92, 255, .3); border-radius: var(--radius-pill);
  padding: 6px 15px; margin-bottom: 22px;
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-2); }

.section-head { max-width: 660px; margin-bottom: 46px; }
.section-head p { color: var(--muted); font-size: 1.05rem; margin: 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font: inherit; font-weight: 600; font-size: .95rem;
  padding: 13px 24px; border-radius: var(--radius-pill);
  border: 1px solid transparent; cursor: pointer;
  transition: transform .14s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: #fff; box-shadow: 0 10px 30px rgba(124, 92, 255, .28); }
.btn--primary:hover { background: #6B4CE8; color: #fff; }
.btn--ghost { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn--ghost:hover { border-color: #2E3B58; color: var(--text); }
.btn--sm { padding: 9px 17px; font-size: .87rem; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(6, 9, 17, .8);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.nav__inner { height: var(--nav-h); display: flex; align-items: center; gap: 26px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 700; font-size: 1.1rem; color: var(--text); letter-spacing: -.02em; }
.brand:hover { color: var(--text); }
.brand img { width: 32px; height: 32px; border-radius: 9px; }
.nav__links { display: flex; gap: 3px; margin-left: 10px; }
.nav__links a { color: var(--muted); font-size: .92rem; font-weight: 500; padding: 8px 13px; border-radius: var(--radius-sm); }
.nav__links a:hover { background: var(--surface); color: var(--text); }
.nav__actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav__toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: 10px; width: 40px; height: 38px; cursor: pointer; padding: 0;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  display: block; width: 17px; height: 2px; background: var(--text); border-radius: 2px; margin-inline: auto; position: relative;
}
.nav__toggle span::before, .nav__toggle span::after { content: ""; position: absolute; }
.nav__toggle span::before { top: -5px; } .nav__toggle span::after { top: 5px; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 84px 0 78px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -280px 0 auto -10%; height: 700px; z-index: -1;
  background:
    radial-gradient(600px 380px at 20% 45%, rgba(124, 92, 255, .22), transparent 70%),
    radial-gradient(520px 340px at 76% 18%, rgba(34, 211, 238, .15), transparent 70%);
}
.hero__grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 58px; align-items: center; }
.hero__lede { font-size: 1.14rem; color: var(--muted); max-width: 52ch; margin-bottom: 30px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }
.hero__stats { display: flex; gap: 34px; flex-wrap: wrap; padding-top: 28px; border-top: 1px solid var(--border-soft); }
.hero__stat b { display: block; font-size: 1.45rem; font-family: var(--mono); letter-spacing: -.03em; }
.hero__stat span { font-size: .79rem; color: var(--dim); }

/* ---------- live demo card ---------- */
.demo {
  background: linear-gradient(160deg, #141033 0%, #0D1322 62%);
  border: 1px solid rgba(124, 92, 255, .28);
  border-radius: 26px; padding: 24px;
  box-shadow: 0 40px 80px rgba(0, 0, 0, .5);
}
.demo__label { font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: #A99CFF; font-weight: 700; }
.demo__value { font-family: var(--mono); font-size: 2.9rem; font-weight: 600; letter-spacing: -.05em; margin: 8px 0 2px; line-height: 1; }
.demo__value small { font-size: 1.05rem; color: var(--muted); font-weight: 500; margin-left: 8px; letter-spacing: 0; }
.demo__hint { font-size: .82rem; color: var(--muted); margin-bottom: 20px; }
.demo__fields { display: grid; gap: 11px; }
.demo__field { display: flex; align-items: center; gap: 12px; }
.demo__field label { flex: 1; font-size: .87rem; color: var(--muted); }
.demo__field input, .demo__field select {
  width: 132px; flex: none; font: inherit; text-align: right;
  background: rgba(255, 255, 255, .05); border: 1px solid var(--border);
  color: var(--text); border-radius: var(--radius-sm); padding: 9px 12px;
  font-family: var(--mono); font-size: .9rem; outline: none;
}
.demo__field select { font-family: var(--font); text-align: left; }
.demo__field input:focus, .demo__field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.demo__row {
  display: flex; gap: 14px; margin-top: 18px; padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .09);
}
.demo__cell { flex: 1; }
.demo__cell span { display: block; font-size: .64rem; text-transform: uppercase; letter-spacing: .07em; color: var(--dim); }
.demo__cell b { font-family: var(--mono); font-size: .95rem; }

/* ---------- cards ---------- */
.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 27px;
  transition: transform .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); border-color: #2C3A58; }
.card h3 { margin-bottom: 9px; }
.card p { color: var(--muted); font-size: .93rem; margin: 0; }
.card__icon {
  width: 44px; height: 44px; border-radius: 13px; margin-bottom: 18px;
  display: grid; place-items: center; background: var(--accent-soft); color: #B6A7FF;
}
.card__icon--cyan { background: rgba(34, 211, 238, .12); color: #67E8F9; }

/* ---------- screens ---------- */
.screens { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.screen {
  display: block; border: 1px solid var(--border); border-radius: 18px;
  padding: 19px 17px 21px; background: var(--surface); color: inherit;
  transition: transform .2s ease, border-color .2s ease;
}
.screen:hover { transform: translateY(-4px); border-color: var(--accent); color: inherit; }
.screen__n {
  width: 27px; height: 27px; border-radius: 9px; background: var(--accent-soft); color: #B6A7FF;
  display: grid; place-items: center; font-size: .73rem; font-weight: 700; margin-bottom: 14px;
}
.screen h3 { font-size: .98rem; margin-bottom: 6px; }
.screen p { font-size: .82rem; color: var(--muted); margin: 0; }

/* ---------- facts ---------- */
.about { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: start; }
.facts { display: grid; gap: 12px; }
.fact {
  display: flex; gap: 13px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 17px 19px;
}
.fact svg { flex: none; margin-top: 2px; color: var(--accent-2); }
.fact b { display: block; font-size: .93rem; }
.fact span { font-size: .86rem; color: var(--muted); }

.notice {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: var(--radius);
  padding: 15px 18px; font-size: .88rem; color: var(--muted); margin-top: 26px;
}
.notice strong { color: var(--text); }

/* ---------- support ---------- */
.support { display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: start; }
.form { display: grid; gap: 14px; }
.field { display: grid; gap: 6px; }
.field label { font-size: .85rem; font-weight: 600; }
.field input, .field textarea, .field select {
  font: inherit; font-size: .93rem; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text); width: 100%; outline: none;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-msg { font-size: .87rem; padding: 12px 15px; border-radius: var(--radius-sm); display: none; }
.form-msg.is-ok { display: block; background: rgba(22, 199, 132, .12); color: var(--long); }

.contact-box {
  background: linear-gradient(155deg, #17123A 0%, #0E1524 65%);
  border: 1px solid rgba(124, 92, 255, .26);
  border-radius: var(--radius-lg); padding: 28px;
}
.contact-box dl { margin: 18px 0 0; display: grid; gap: 15px; }
.contact-box dt { font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; color: var(--dim); }
.contact-box dd { margin: 3px 0 0; font-size: .93rem; }

/* ---------- footer ---------- */
.footer { background: var(--bg-2); border-top: 1px solid var(--border-soft); padding: 62px 0 34px; font-size: .89rem; color: var(--muted); }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--text); }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 34px; border-bottom: 1px solid var(--border-soft); }
.footer .brand { margin-bottom: 15px; }
.footer h4 { color: var(--text); font-size: .78rem; text-transform: uppercase; letter-spacing: .09em; margin-bottom: 15px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.footer address { font-style: normal; line-height: 1.8; font-size: .86rem; }
.footer__reg { margin-top: 20px; font-size: .86rem; line-height: 1.8; }
.footer__reg h4 { margin-bottom: 8px; }
.footer__reg .val { color: var(--dim); font-family: var(--mono); font-size: .8rem; }
.reg-pending {
  display: inline-block; margin-top: 12px;
  font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  padding: 5px 12px; border-radius: var(--radius-pill);
  background: rgba(255, 176, 32, .1); border: 1px solid rgba(255, 176, 32, .3); color: #FFC966;
}
.footer__legal { padding-top: 24px; display: grid; gap: 11px; font-size: .8rem; color: var(--dim); }
.footer__legal strong { color: var(--muted); }
.footer__bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 14px; }

/* ---------- docs ---------- */
.doc { max-width: 790px; }
.doc h2 { margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--border-soft); font-size: 1.5rem; }
.doc h2:first-of-type { margin-top: 0; border-top: none; padding-top: 0; }
.doc p, .doc li { color: var(--muted); font-size: .97rem; }
.doc strong { color: var(--text); }
.doc ul { padding-left: 20px; display: grid; gap: 8px; }
.toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 21px 25px; margin-bottom: 42px; }
.toc h4 { margin: 0 0 11px; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--dim); }
.toc ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero__grid, .about, .support { grid-template-columns: 1fr; }
  .grid--3, .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .screens { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .nav__links {
    display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; background: var(--bg-2); border-bottom: 1px solid var(--border);
    padding: 12px 22px 18px; gap: 2px;
  }
  .nav__links.is-open { display: flex; }
  .nav__toggle { display: grid; place-items: center; }
  .nav__actions .btn--ghost { display: none; }
}
@media (max-width: 620px) {
  .section { padding: 62px 0; }
  .grid--3, .grid--2, .screens { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero__stats { gap: 22px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }