*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --font: "Inter", "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Ubuntu, Cantarell, Roboto, "Helvetica Neue", "Noto Sans", "Open Sans", Arial, sans-serif;
  --bg: #070c18;
  --bg-card: #0c1525;
  --bg-card-hover: #101d35;
  --accent: #5ba3cc;
  --accent-dim: rgba(91, 163, 204, 0.12);
  --accent-glow: rgba(91, 163, 204, 0.3);
  --accent-hover: #74b8de;
  --text: #dce6f5;
  --text-muted: #7a879e;
  --text-dim: #3a4558;
  --border: rgba(91, 163, 204, 0.12);
  --border-strong: rgba(91, 163, 204, 0.28);
  --radius: 14px;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Header ─────────────────────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(7, 12, 24, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, box-shadow 0.3s;
}

.site-header.scrolled {
  background: rgba(7, 12, 24, 0.96);
  box-shadow: 0 1px 0 rgba(0, 200, 180, 0.08), 0 4px 24px rgba(0, 0, 0, 0.4);
}

.logo {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.025em;
}

.logo span {
  color: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-switch {
  display: flex;
  gap: 2px;
  margin-right: 8px;
}

.lang-btn {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-muted);
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.03em;
}

.lang-btn:hover,
.lang-btn.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

/* ─── Buttons ──────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--accent-glow);
}

.btn-lg {
  padding: 14px 36px;
  font-size: 15px;
  border-radius: var(--radius);
}

/* ─── Hero ──────────────────────────────────────────────────────────────── */

.hero {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 90% 55% at 50% -10%, rgba(91, 163, 204, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 50% 30% at 20% 80%, rgba(0, 80, 160, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  max-width: 820px;
  position: relative;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 32px;
  background: var(--accent-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
  color: #fff;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 560px;
  margin: 0 auto 44px;
}

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

.hero-cta .nav-link {
  font-size: 14px;
  padding: 10px 16px;
}

.hero-stats {
  margin-top: 72px;
  display: flex;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  overflow: hidden;
}

.stat {
  flex: 1;
  min-width: 160px;
  text-align: center;
  padding: 28px 24px;
  border-right: 1px solid var(--border);
}

.stat:last-child {
  border-right: none;
}

.stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
  display: block;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* ─── Divider ────────────────────────────────────────────────────────────── */

.divider {
  text-align: center;
  color: var(--text-dim);
  font-size: 16px;
  letter-spacing: 0.4em;
  padding: 16px 0;
  user-select: none;
}

/* ─── Sections ───────────────────────────────────────────────────────────── */

.section {
  padding: 80px 24px;
  max-width: 1120px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 48px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #fff;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* ─── Product cards ──────────────────────────────────────────────────────── */

.products-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  transition: border-color 0.3s, background 0.3s, transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.product-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(91, 163, 204, 0) 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.product-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border-strong);
}

.product-card:hover::after {
  opacity: 1;
}

.product-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--accent);
}

.product-name {
  font-size: 1.45rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.product-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 24px;
}

.product-features {
  list-style: none;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.product-features li {
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.product-features li::before {
  content: '→';
  color: var(--accent);
  flex-shrink: 0;
  font-size: 0.8rem;
  margin-top: 2px;
}

.product-formats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.format-pill {
  padding: 5px 13px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: transparent;
  white-space: nowrap;
}

.format-pill.free {
  border-color: rgba(91, 163, 204, 0.3);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ─── Steps ──────────────────────────────────────────────────────────────── */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step {
  text-align: center;
  padding: 40px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 auto 22px;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ─── Commission ──────────────────────────────────────────────────────────── */

.commission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.commission-item {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.commission-value {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.05em;
  display: block;
  margin-bottom: 10px;
}

.commission-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.commission-note {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.6;
  padding: 0 4px;
}

/* ─── CTA section ────────────────────────────────────────────────────────── */

.cta-section {
  padding: 80px 24px;
  text-align: center;
}

.cta-box {
  max-width: 680px;
  margin: 0 auto;
  padding: 72px 56px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 100% 80% at 50% -20%, rgba(91, 163, 204, 0.07) 0%, transparent 65%);
  pointer-events: none;
}

.cta-box h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
  position: relative;
}

.cta-box p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.75;
  position: relative;
}

/* ─── Footer ─────────────────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.footer-link {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--text);
}

/* ─── Animations ─────────────────────────────────────────────────────────── */

.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* stagger children */
.products-grid .product-card:nth-child(2),
.steps .step:nth-child(2),
.commission-grid .commission-item:nth-child(2) {
  transition-delay: 0.1s;
}

.products-grid .product-card:nth-child(3),
.steps .step:nth-child(3),
.commission-grid .commission-item:nth-child(3) {
  transition-delay: 0.2s;
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .products-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .site-header {
    padding: 0 20px;
  }

  .nav-link.hide-mobile {
    display: none;
  }

  .steps,
  .commission-grid {
    grid-template-columns: 1fr;
  }

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

  .stat {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
  }

  .stat:last-child {
    border-bottom: none;
  }

  .cta-box {
    padding: 48px 28px;
  }

  .site-footer {
    padding: 24px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .section {
    padding: 60px 20px;
  }

  .product-card {
    padding: 28px 24px;
  }
}