:root {
  color-scheme: dark;
  --page-bg: radial-gradient(circle at 20% 20%, rgba(68, 118, 221, 0.25), transparent 55%),
    radial-gradient(circle at 80% 10%, rgba(244, 114, 182, 0.35), transparent 55%),
    radial-gradient(circle at 50% 75%, rgba(249, 115, 22, 0.32), transparent 65%),
    linear-gradient(160deg, #050816 0%, #0c1026 40%, #050816 100%);
  --border-glass: rgba(255, 255, 255, 0.08);
  --surface: rgba(12, 18, 40, 0.78);
  --surface-elevated: rgba(9, 14, 33, 0.84);
  --text-primary: #f8fafc;
  --text-secondary: rgba(226, 232, 240, 0.78);
  --text-muted: rgba(148, 163, 184, 0.78);
  --brand: #38bdf8;
  --brand-soft: rgba(14, 165, 233, 0.2);
  --accent: #f97316;
  --accent-soft: rgba(249, 115, 22, 0.22);
  --magenta: #f472b6;
  --glow-amber: rgba(252, 211, 77, 0.35);
  font-family: 'Segoe UI', 'Inter', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

body,
h1,
h2,
h3,
h4,
p,
ul,
ol,
figure {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

body {
  background: #020617;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

/* Hide Yandex Metrika badge */
.ym-advanced-informer,
.ym-vertical-badge,
a[href*="metrika.yandex"] {
  display: none !important;
}

.page {
  background: var(--page-bg);
  min-height: 100vh;
}

.aurora {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(14, 165, 233, 0.28), transparent 55%),
    radial-gradient(ellipse at bottom left, rgba(244, 114, 182, 0.22), transparent 60%),
    radial-gradient(ellipse at center, rgba(15, 118, 110, 0.18), transparent 65%);
  opacity: 0.75;
  filter: blur(60px);
  pointer-events: none;
  z-index: -1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(3, 6, 23, 0.78);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  backdrop-filter: blur(18px);
}

.header-inner {
  margin: 0 auto;
  max-width: 1120px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 20px;
}

.logo {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--brand);
}

.desktop-nav {
  display: flex;
  gap: 16px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text-primary);
  background: rgba(56, 189, 248, 0.18);
  outline: none;
}

.cta {
  border-radius: 999px;
  background: linear-gradient(120deg, var(--brand) 0%, #22d3ee 100%);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 20px;
  box-shadow: 0 10px 30px rgba(34, 211, 238, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta:hover,
.cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 38px rgba(34, 211, 238, 0.45);
  outline: none;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: none;
  padding: 8px;
}

.menu-bar {
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 4px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 12px;
  padding: 16px 20px 24px;
  background: rgba(8, 12, 28, 0.95);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.mobile-nav[hidden] {
  display: none !important;
}

.mobile-link {
  padding: 8px 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

.mobile-link:last-child {
  border-bottom: none;
}

.site-main {
  margin: 0 auto;
  max-width: 1120px;
  padding: 64px 20px 96px;
}

.hero {
  position: relative;
  overflow: hidden;
  border-radius: 40px;
  border: 1px solid var(--border-glass);
  background: linear-gradient(135deg, rgba(5, 8, 22, 0.9), rgba(14, 19, 42, 0.72));
  box-shadow: 0 40px 80px rgba(15, 23, 42, 0.55);
  padding: 72px 32px 88px;
}

.hero-lights .halo {
  position: absolute;
  display: block;
  border-radius: 999px;
  filter: blur(60px);
  opacity: 0.55;
}

.halo-1 {
  top: 12%;
  right: -8%;
  width: 320px;
  height: 320px;
  background: conic-gradient(from 45deg, rgba(249, 115, 22, 0.48), rgba(244, 114, 182, 0.08), rgba(56, 189, 248, 0.42));
}

.halo-2 {
  left: -10%;
  top: 30%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.3), transparent 70%);
}

.halo-3 {
  left: 40%;
  top: 42%;
  width: 440px;
  height: 440px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: radial-gradient(circle, rgba(15, 23, 42, 0) 55%, rgba(148, 163, 184, 0.18) 100%);
}

.hero-content {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, 0.35);
  background: rgba(56, 189, 248, 0.12);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  font-weight: 600;
  color: rgba(224, 242, 254, 0.92);
}

.hero h1 {
  font-size: clamp(2.75rem, 4vw, 3.8rem);
  line-height: 1.1;
  color: var(--text-primary);
  text-shadow: 0 18px 40px rgba(15, 23, 42, 0.75);
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--accent) 0%, var(--magenta) 100%);
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 18px 42px rgba(249, 115, 22, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hero-primary:hover,
.hero-primary:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 24px 54px rgba(249, 115, 22, 0.48);
  outline: none;
}

.hero-icon {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  font-size: 1.1rem;
}

.hero-secondary {
  padding: 14px 24px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 600;
  transition: border 0.2s ease, color 0.2s ease;
}

.hero-secondary:hover,
.hero-secondary:focus-visible {
  border-color: rgba(56, 189, 248, 0.6);
  color: var(--text-primary);
  outline: none;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  width: 100%;
  margin-top: 16px;
}

.stat-card {
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid rgba(148, 163, 184, 0.12);
  background: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(12px);
  text-align: left;
  transition: border 0.2s ease, background 0.2s ease;
}

.stat-card:hover {
  border-color: rgba(56, 189, 248, 0.4);
  background: rgba(56, 189, 248, 0.1);
}

.stat-label {
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(148, 163, 184, 0.76);
}

.stat-value {
  margin-top: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.bar-graph {
  display: flex;
  gap: 8px;
  justify-content: space-between;
  margin-top: 24px;
  width: min(100%, 520px);
  height: 96px;
  align-items: flex-end;
}

.bar {
  width: 6px;
  border-radius: 8px;
  background: linear-gradient(to top, rgba(249, 115, 22, 0.5), transparent);
  display: inline-flex;
}

.bar-1 {
  height: 64px;
}

.bar-2 {
  height: 84px;
  background: linear-gradient(to top, rgba(56, 189, 248, 0.6), transparent);
}

.bar-3 {
  height: 92px;
  background: linear-gradient(to top, rgba(244, 114, 182, 0.6), transparent);
}

.bar-4 {
  height: 70px;
  background: linear-gradient(to top, rgba(56, 189, 248, 0.4), transparent);
}

.bar-5 {
  height: 52px;
  background: linear-gradient(to top, rgba(249, 115, 22, 0.45), transparent);
}

.bar-6 {
  height: 76px;
  background: linear-gradient(to top, rgba(255, 255, 255, 0.35), transparent);
}

.about {
  position: relative;
  margin-top: 96px;
}

.about-inner {
  position: relative;
  border-radius: 32px;
  border: 1px solid var(--border-glass);
  padding: 56px 48px;
  background: var(--surface);
  backdrop-filter: blur(16px);
  box-shadow: 0 36px 80px rgba(15, 23, 42, 0.55);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about h2 {
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  color: var(--text-primary);
  margin-bottom: 12px;
}

.about p {
  font-size: 1rem;
  color: var(--text-secondary);
}

.about-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  display: grid;
  gap: 8px;
  font-size: 1rem;
}

.about-list li {
  line-height: 1.6;
}

.about-lights {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.about-glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(70px);
}

.about-glow-1 {
  top: -40px;
  right: 12%;
  width: 260px;
  height: 260px;
  background: rgba(56, 189, 248, 0.32);
}

.about-glow-2 {
  bottom: -28px;
  left: 8%;
  width: 220px;
  height: 220px;
  background: rgba(249, 115, 22, 0.3);
}

.faq {
  margin-top: 96px;
}

.faq-inner {
  border-radius: 28px;
  border: 1px solid var(--border-glass);
  background: var(--surface-elevated);
  padding: 56px 48px;
  box-shadow: 0 32px 70px rgba(15, 23, 42, 0.5);
}

.faq h2 {
  font-size: clamp(2rem, 3vw, 2.5rem);
  color: var(--text-primary);
}

.faq-lead {
  margin-top: 12px;
  color: var(--text-secondary);
  max-width: 520px;
}

.faq-list {
  margin-top: 32px;
  display: grid;
  gap: 18px;
}

.faq-item {
  border-radius: 22px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(12, 18, 40, 0.85);
  padding: 22px 24px;
  transition: border 0.2s ease;
}

.faq-item[open] {
  border-color: rgba(56, 189, 248, 0.4);
}

.faq-question {
  cursor: pointer;
  list-style: none;
  font-size: 1.05rem;
  color: var(--text-primary);
  font-weight: 600;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  float: right;
  color: rgba(148, 163, 184, 0.6);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  margin-top: 14px;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.6;
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  background: rgba(3, 6, 23, 0.8);
  backdrop-filter: blur(18px);
}

.footer-inner {
  margin: 0 auto;
  max-width: 1120px;
  padding: 32px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--brand);
  font-weight: 500;
}

@media (max-width: 960px) {
  .site-main {
    padding-top: 48px;
  }

  .hero {
    padding: 56px 24px 72px;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }

  .cta {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .mobile-nav {
    display: flex;
  }

  .hero {
    padding: 48px 20px 64px;
  }

  .hero-chip {
    font-size: 0.68rem;
    letter-spacing: 0.24em;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 5vw, 2.8rem);
  }

  .about-inner,
  .faq-inner {
    padding: 40px 24px;
  }

  .footer-inner {
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .header-inner {
    padding: 16px;
  }

  .hero {
    border-radius: 28px;
  }

  .stat-card {
    padding: 16px;
  }

  .bar-graph {
    height: 80px;
  }

  .about-inner,
  .faq-inner {
    gap: 16px;
  }

  .faq-item {
    padding: 18px;
  }
}