:root {
  --bg: #020406;
  --text: #f4f8ff;
  --muted: #8d9bae;
  --accent: #0b8dff;
  --line: rgba(255, 255, 255, 0.08);
  --panel: rgba(10, 17, 26, 0.88);
}

*,
*::before,
*::after { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body { overflow-x: hidden; }

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.preloader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-content: center;
  gap: 12px;
  text-align: center;
  background: #020406;
  transition: opacity .35s ease, visibility .35s ease;
}

.preloader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader__logo { width: 84px; margin: 0 auto; }

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: rgba(2, 4, 6, 0.65);
  backdrop-filter: blur(8px);
}

.header.is-scrolled { border-color: var(--line); }

.header__row {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand img { width: 28px; height: 28px; }
.brand span { letter-spacing: .12em; font-size: 13px; font-weight: 700; }

.nav { display: flex; gap: 18px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--text); }

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: center;
  padding: 38px 0 46px;
}

.hero__inner { max-width: 860px; }
.hero__mark { width: 52px; height: 52px; margin-bottom: 20px; }
.hero__brand {
  margin: 0 0 12px;
  color: var(--muted);
  letter-spacing: .12em;
  font-size: 12px;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(44px, 7.2vw, 82px);
  line-height: .98;
  letter-spacing: -.03em;
}

.hero__lead {
  margin-top: 16px;
  max-width: 700px;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 21px);
}

.tags {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tags li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: #d2dceb;
  font-size: 14px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.01);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
}

.btn--primary {
  border-color: rgba(11, 141, 255, 0.45);
  background: linear-gradient(180deg, rgba(11, 141, 255, 0.32), rgba(11, 141, 255, 0.14));
}

.btn--disabled {
  opacity: .45;
  pointer-events: none;
}

.how {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.01);
  padding: 34px 0;
}

.how h2 { margin: 0 0 14px; font-size: 24px; }
.how ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.how li { display: flex; align-items: center; gap: 12px; color: var(--muted); }
.how li span { color: var(--accent); font-weight: 700; min-width: 28px; }

.actions { padding: 42px 0; }
.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: var(--panel);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.panel article { padding: 22px; }
.panel article + article { border-left: 1px solid var(--line); }
.panel h3 { margin: 0 0 10px; font-size: 24px; }
.panel p { margin: 0; color: var(--muted); }
.price { margin-top: 12px !important; color: var(--text) !important; font-size: 22px; font-weight: 800; }
.micro { margin-top: 10px !important; font-size: 13px; color: #6f7d90 !important; }
.status { min-height: 18px; margin-top: 8px !important; color: #ffd166 !important; font-size: 13px; }

.amounts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.amounts button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 10px;
  cursor: pointer;
}

.amounts button.active {
  border-color: rgba(11, 141, 255, 0.45);
  background: rgba(11, 141, 255, 0.14);
}

.input-wrap {
  display: grid;
  gap: 6px;
  margin-top: 12px;
}
.input-wrap span { color: var(--muted); font-size: 13px; }
.input-wrap input {
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  border-radius: 10px;
  padding: 10px;
  font-size: 16px;
}

.note {
  padding: 10px 0 40px;
}

.note .container {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(4, 11, 18, 0.78);
  padding: 16px;
  color: #c1cfdf;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 28px;
}

.footer__brand { margin: 0 0 8px; font-size: 18px; font-weight: 700; }
.footer__contacts { display: flex; flex-wrap: wrap; gap: 14px; }
.footer__contacts a { color: var(--muted); text-decoration: none; }

@media (max-width: 940px) {
  .panel { grid-template-columns: 1fr; }
  .panel article + article { border-left: 0; border-top: 1px solid var(--line); }
}

@media (max-width: 700px) {
  .hero { min-height: auto; padding-top: 90px; }
  .nav { gap: 10px; }
  .nav a { font-size: 13px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
}