:root {
  --bg: #070b12;
  --bg-elevated: #0f1623;
  --bg-card: rgba(18, 27, 42, 0.72);
  --border: rgba(148, 163, 184, 0.12);
  --text: #e8edf5;
  --text-muted: #94a3b8;
  --accent: #3d7eff;
  --accent-soft: rgba(61, 126, 255, 0.15);
  --green: #34d399;
  --green-soft: rgba(52, 211, 153, 0.12);
  --gold: #fbbf24;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --font: "DM Sans", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --tilt-x: 0deg;
  --tilt-y: 0deg;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
}

body.lang-ru {
  letter-spacing: 0.01em;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.25s var(--ease-out);
}

a:hover {
  color: #6b9fff;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

/* Animated background */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: orb-float 18s var(--ease-out) infinite alternate;
}

.bg-orb-1 {
  width: 520px;
  height: 520px;
  top: -180px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(61, 126, 255, 0.28);
}

.bg-orb-2 {
  width: 380px;
  height: 380px;
  top: 8%;
  right: -120px;
  background: rgba(52, 211, 153, 0.14);
  animation-delay: -6s;
}

.bg-orb-3 {
  width: 300px;
  height: 300px;
  bottom: 10%;
  left: -80px;
  background: rgba(99, 102, 241, 0.18);
  animation-delay: -12s;
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black, transparent 75%);
}

@keyframes orb-float {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(30px, 40px) scale(1.08);
  }
}

/* Cursor glow */
.cursor-glow {
  position: fixed;
  width: 320px;
  height: 320px;
  margin: -160px 0 0 -160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(61, 126, 255, 0.12), transparent 70%);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.cursor-glow.visible {
  opacity: 1;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 18, 0.72);
  border-bottom: 1px solid transparent;
  transition: background 0.35s var(--ease-out), border-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.site-header.scrolled {
  background: rgba(7, 11, 18, 0.92);
  border-bottom-color: var(--border);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  z-index: 2;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  transition: transform 0.4s var(--ease-out);
}

.brand:hover img {
  transform: scale(1.06) rotate(-3deg);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 2;
}

.lang-switch {
  display: inline-flex;
  padding: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  gap: 2px;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.lang-btn:hover {
  color: var(--text);
}

.lang-btn.active {
  background: linear-gradient(135deg, #3d7eff, #2563eb);
  color: #fff;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
}

.nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s var(--ease-out);
}

.nav a:not(.nav-cta):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav a:hover {
  color: var(--text);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
  box-shadow: 0 8px 28px rgba(61, 126, 255, 0.35);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), background 0.25s ease !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: #5b92ff;
  color: #fff !important;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(61, 126, 255, 0.45);
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  font-size: 1.2rem;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Hero */
.hero {
  padding: 4.5rem 0 3.5rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(61, 126, 255, 0.25);
  color: #9ec1ff;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  animation: fade-down 0.8s var(--ease-out) both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
  background: linear-gradient(120deg, #fff 0%, #c7d8ff 45%, #fff 90%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: fade-up 0.9s var(--ease-out) 0.1s both, shimmer 8s linear infinite;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 34rem;
  margin: 0 0 2rem;
  animation: fade-up 0.9s var(--ease-out) 0.2s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  animation: fade-up 0.9s var(--ease-out) 0.3s both;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-down {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.45rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.98rem;
  border: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), background 0.25s ease;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.18) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.6s ease;
}

.btn:hover::after {
  transform: translateX(120%);
}

.btn:hover {
  transform: translateY(-3px);
}

.btn:active {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, #3d7eff, #2563eb);
  color: #fff;
  box-shadow: 0 12px 36px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 16px 44px rgba(37, 99, 235, 0.5);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
}

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
  transition: transform 0.15s ease-out, border-color 0.3s ease, box-shadow 0.3s ease;
  animation: float-card 6s ease-in-out infinite;
}

.hero-card:hover {
  border-color: rgba(61, 126, 255, 0.35);
  box-shadow: 0 28px 90px rgba(37, 99, 235, 0.2);
}

@keyframes float-card {
  0%, 100% { transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateY(0); }
  50% { transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateY(-8px); }
}

.hero-card h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.signal-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.signal-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  transition: transform 0.3s var(--ease-out), border-color 0.3s ease, background 0.3s ease;
}

.signal-list li:hover {
  transform: translateX(6px);
  border-color: rgba(61, 126, 255, 0.3);
  background: rgba(61, 126, 255, 0.06);
}

.signal-icon {
  font-size: 1.35rem;
  line-height: 1;
  transition: transform 0.35s var(--ease-out);
}

.signal-list li:hover .signal-icon {
  transform: scale(1.2) rotate(-8deg);
}

.signal-list strong {
  display: block;
  margin-bottom: 0.15rem;
}

.signal-list span {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Sections */
section {
  padding: 4rem 0;
  position: relative;
  z-index: 1;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

.section-head p {
  color: var(--text-muted);
  margin: 0;
}

/* Bot cards */
.bot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.bot-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transform: perspective(800px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
  transition:
    border-color 0.3s ease,
    transform 0.15s ease-out,
    box-shadow 0.3s ease;
}

.bot-card:hover {
  border-color: rgba(61, 126, 255, 0.35);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.bot-card.featured {
  border-color: rgba(52, 211, 153, 0.35);
  background: linear-gradient(160deg, rgba(52, 211, 153, 0.08), var(--bg-card));
}

.bot-badge {
  display: inline-block;
  width: fit-content;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--accent-soft);
  color: #9ec1ff;
}

.bot-card.featured .bot-badge {
  background: var(--green-soft);
  color: var(--green);
}

.bot-card h3 {
  margin: 0;
  font-size: 1.25rem;
}

.bot-card p {
  margin: 0;
  color: var(--text-muted);
  flex: 1;
}

.bot-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  margin-top: 0.5rem;
  transition: gap 0.25s var(--ease-out);
}

.bot-link:hover {
  gap: 0.65rem;
}

/* Path tabs */
.path-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 6px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.path-tab {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.7rem 1.25rem;
  border-radius: 10px;
  cursor: pointer;
  transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.path-tab:hover {
  color: var(--text);
}

.path-tab.active {
  background: linear-gradient(135deg, rgba(61, 126, 255, 0.25), rgba(37, 99, 235, 0.15));
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(61, 126, 255, 0.3);
}

.path-panels {
  position: relative;
  min-height: 280px;
}

.path-panel {
  display: none;
  animation: panel-in 0.45s var(--ease-out) both;
}

.path-panel.active {
  display: block;
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.step {
  position: relative;
  padding: 1.75rem;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease;
}

.step:hover {
  transform: translateY(-6px);
  border-color: rgba(61, 126, 255, 0.3);
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  transition: transform 0.35s var(--ease-out), background 0.35s ease;
}

.step:hover .step-num {
  transform: scale(1.1);
  background: rgba(61, 126, 255, 0.28);
}

.step h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Flow diagram */
.flow-box {
  margin-top: 2.5rem;
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(15, 22, 35, 0.9), rgba(7, 11, 18, 0.9));
  border: 1px solid var(--border);
}

.flow-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem 1rem;
}

.flow-item {
  padding: 0.65rem 1.1rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  font-size: 0.92rem;
  font-weight: 500;
  transition: transform 0.4s var(--ease-out), border-color 0.4s ease, box-shadow 0.4s ease, background 0.4s ease;
}

.flow-item.pulse {
  transform: scale(1.05);
  border-color: rgba(61, 126, 255, 0.45);
  background: rgba(61, 126, 255, 0.12);
  box-shadow: 0 0 24px rgba(61, 126, 255, 0.25);
}

.flow-arrow {
  color: var(--text-muted);
  font-size: 1.1rem;
  animation: arrow-bounce 2.2s ease-in-out infinite;
}

@keyframes arrow-bounce {
  0%, 100% { opacity: 0.5; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(4px); }
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  max-width: 800px;
  margin: 0 auto;
}

.price-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  text-align: center;
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease, box-shadow 0.35s ease;
}

.price-card:hover {
  transform: translateY(-8px);
}

.price-card.highlight {
  border-color: rgba(61, 126, 255, 0.4);
  box-shadow: 0 0 0 1px rgba(61, 126, 255, 0.15), var(--shadow);
}

.price-card.highlight:hover {
  box-shadow: 0 0 0 1px rgba(61, 126, 255, 0.25), 0 28px 70px rgba(37, 99, 235, 0.25);
}

.price-card h3 {
  margin: 0 0 0.5rem;
}

.price-amount {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  margin: 1rem 0;
}

.price-amount small {
  font-size: 1rem;
  color: var(--text-muted);
  font-family: var(--font);
}

.price-features {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  text-align: left;
  display: grid;
  gap: 0.55rem;
}

.price-features li {
  color: var(--text-muted);
  padding-left: 1.5rem;
  position: relative;
  transition: transform 0.25s ease, color 0.25s ease;
}

.price-card:hover .price-features li {
  color: #b8c5d9;
}

.price-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

/* Disclaimer */
.disclaimer {
  padding: 2rem;
  border-radius: var(--radius);
  background: rgba(251, 191, 36, 0.06);
  border: 1px solid rgba(251, 191, 36, 0.2);
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.disclaimer:hover {
  border-color: rgba(251, 191, 36, 0.35);
  box-shadow: 0 12px 40px rgba(251, 191, 36, 0.08);
}

.disclaimer strong {
  color: var(--gold);
}

.span-full {
  grid-column: 1 / -1;
}

.subsection-label {
  text-align: center;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--border);
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: color 0.25s ease, transform 0.25s ease;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--text);
  transform: translateY(-2px);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 2rem 0 0;
  text-align: center;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero h1, .hero-lead, .hero-actions, .eyebrow { animation: none; }
  .hero-card { animation: none; }
  .flow-arrow { animation: none; }
  .btn::after { display: none; }
  .cursor-glow { display: none; }
  .bg-orb { animation: none; }
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .bot-grid,
  .steps,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 4vw 1.25rem;
    background: rgba(7, 11, 18, 0.96);
    border-bottom: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .header-inner {
    position: relative;
    flex-wrap: wrap;
  }

  .header-actions {
    margin-left: auto;
  }

  .path-tabs {
    flex-direction: column;
    width: 100%;
  }

  .path-tab {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 600px) {
  .hero {
    padding-top: 3rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}