/* Лендинг /promo */
:root {
  --bg: #070b14;
  --bg2: #0c1222;
  --card: #141c2f;
  --border: #243049;
  --text: #e8eef9;
  --muted: #8b9bb8;
  --accent: #6366f1;
  --accent2: #818cf8;
  --ok: #22c55e;
  --gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --promo-scroll-offset: 5.5rem; /* sticky header + зазор под заголовок */
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--promo-scroll-offset);
}
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

.promo-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.promo-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.1rem;
}
.promo-logo span { font-size: 1.4rem; }
.promo-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}
.promo-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.promo-nav a:hover { color: var(--accent2); }
.promo-cta-row { display: flex; gap: 0.6rem; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent2); }

.promo-hero {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 2.5rem;
  align-items: center;
  max-width: 1140px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 4rem;
}
.promo-hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.promo-hero h1 em {
  font-style: normal;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.promo-hero-lead {
  font-size: 1.15rem;
  color: var(--muted);
  margin: 0 0 1.75rem;
  max-width: 32rem;
}
.promo-hero-bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
}
.promo-hero-bullets li {
  padding: 0.35rem 0 0.35rem 1.75rem;
  position: relative;
  color: #c8d4ea;
}
.promo-hero-bullets li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--ok);
  font-weight: 700;
}
.promo-hero-visual {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
.promo-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}
.promo-hero-glow {
  position: absolute;
  inset: -20% -10% auto auto;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25), transparent 70%);
  pointer-events: none;
}

.promo-section {
  max-width: 1140px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  scroll-margin-top: var(--promo-scroll-offset);
}
.promo-section-title {
  text-align: center;
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
}
.promo-section-sub {
  text-align: center;
  color: var(--muted);
  margin: 0 auto 2.5rem;
  max-width: 36rem;
}

.promo-features {
  display: grid;
  gap: 3rem;
}
.promo-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  overflow: hidden;
}
.promo-feature.reverse { direction: rtl; }
.promo-feature.reverse > * { direction: ltr; }
.promo-feature img {
  width: 100%;
  border-radius: 12px;
  display: block;
}
.promo-feature h3 {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
}
.promo-feature p { margin: 0; color: var(--muted); }
.promo-feature ul {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
  color: #c8d4ea;
}
.promo-feature li { margin-bottom: 0.4rem; }

.promo-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.promo-step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
}
.promo-step-num {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gradient);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}
.promo-step h4 { margin: 0 0 0.35rem; font-size: 1rem; }
.promo-step p { margin: 0; font-size: 0.85rem; color: var(--muted); }

.promo-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.promo-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
}
.promo-card h4 { margin: 0 0 0.5rem; }
.promo-card p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.promo-card .icon { font-size: 2rem; margin-bottom: 0.75rem; }

.promo-cta-block {
  text-align: center;
  background: linear-gradient(160deg, #1a2240 0%, #141c2f 50%, #0c1222 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3rem 2rem;
  margin: 2rem 1.5rem 4rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.promo-cta-block h2 { margin: 0 0 0.75rem; font-size: 1.75rem; }
.promo-cta-block p { color: var(--muted); margin: 0 0 1.5rem; }

.promo-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}
.promo-footer a { color: var(--accent2); text-decoration: none; }
.promo-footer a:hover { text-decoration: underline; }

@media (max-width: 900px) {
  .promo-hero { grid-template-columns: 1fr; }
  .promo-hero-visual { order: -1; }
  .promo-feature,
  .promo-feature.reverse { grid-template-columns: 1fr; direction: ltr; }
  .promo-steps { grid-template-columns: 1fr 1fr; }
  .promo-cards { grid-template-columns: 1fr; }
  .promo-nav { display: none; }
}