:root {
  --color-primary: #0057ff;
  --color-primary-dark: #0046cc;
  --color-text: #1a1a2e;
  --color-text-muted: #5a5a6e;
  --color-bg: #ffffff;
  --color-bg-soft: #f7f9fc;
  --color-border: #e2e8f0;
  --color-card: #ffffff;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --max-width: 1200px;
  --font-family:
    "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

.container {
  width: min(100% - 32px, var(--max-width));
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    transform 0.15s,
    box-shadow 0.15s,
    background 0.15s;
  text-decoration: none;
}

.btn:hover,
.btn:focus {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  text-decoration: none;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-primary-dark);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--color-bg-soft);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.0625rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 16px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.brand-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  line-height: 1;
}

.brand:hover, .brand:focus {
  text-decoration: none;
  color: var(--color-text);
}

.brand img {
  width: 32px;
  height: 32px;
  display: block;
}

.brand-text {
  line-height: 1;
}

.main-nav {
  display: flex;
  align-items: center;
}

.menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu a {
  color: var(--color-text);
  font-weight: 500;
}

.menu a:hover,
.menu a:focus {
  color: var(--color-primary);
}

.menu .btn {
  color: #fff;
}

.menu .btn:hover,
.menu .btn:focus {
  color: #fff;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--color-text);
  border-radius: 2px;
}

/* Hero */
.hero {
  padding: 80px 0;
  background: linear-gradient(
    180deg,
    var(--color-bg-soft) 0%,
    var(--color-bg) 100%
  );
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.15;
  margin: 0 0 24px;
  letter-spacing: -0.02em;
}

.hero-lead {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin: 0 0 32px;
  max-width: 540px;
}

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

.hero-media img {
  width: 100%;
  max-width: 560px;
  margin-inline: auto;
}

/* Features */
.features {
  padding: 96px 0;
}

.features h2 {
  text-align: center;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 56px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 1.25rem;
}

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

/* How it works */
.how-it-works {
  padding: 96px 0;
  background: var(--color-bg-soft);
}

.how-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.how-content h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 28px;
}

.steps {
  padding-left: 20px;
  margin: 0 0 32px;
}

.steps li {
  margin-bottom: 16px;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

.steps li strong {
  color: var(--color-text);
}

.how-media img {
  width: 100%;
  max-width: 600px;
  margin-inline: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* Pricing */
.pricing {
  padding: 96px 0;
  text-align: center;
}

.pricing h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 40px;
}

.pricing-card {
  max-width: 420px;
  margin-inline: auto;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}

.pricing-card h3 {
  margin: 0 0 16px;
  font-size: 1.5rem;
}

.price {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
  line-height: 1;
}

.currency {
  font-size: 1.5rem;
  vertical-align: super;
}

.period {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.price-note {
  color: var(--color-text-muted);
  margin: 16px 0 24px;
}

.pricing-card ul {
  text-align: left;
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
}

.pricing-card li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.pricing-card li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 700;
  margin-right: 10px;
}

/* CTA */
.cta {
  padding: 96px 0;
  background: var(--color-primary);
  color: #fff;
  text-align: center;
}

.cta h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 16px;
}

.cta p {
  font-size: 1.125rem;
  opacity: 0.9;
  margin: 0 0 32px;
}

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

.cta .btn-secondary {
  border-color: #fff;
  color: #fff;
  background: transparent;
}

.cta .btn-secondary:hover,
.cta .btn-secondary:focus {
  background: rgba(255, 255, 255, 0.12);
}

/* Footer */
.site-footer {
  padding: 48px 0;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.footer-brand-logo img {
  width: 28px;
  height: 28px;
  display: block;
}

.footer-brand-text {
  line-height: 1;
}

.footer-brand p {
  color: var(--color-text-muted);
  margin: 8px 0 0;
  font-size: 0.9375rem;
}

.footer-tagline {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-inner nav ul {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-inner nav a {
  color: var(--color-text-muted);
  font-weight: 500;
}

.copyright {
  width: 100%;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin: 24px 0 0;
}

/* Responsive */
@media (max-width: 900px) {
  .hero-inner,
  .how-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero {
    padding: 56px 0;
  }

  .hero-content {
    text-align: center;
  }

  .hero-lead {
    margin-inline: auto;
  }

  .hero-actions,
  .cta-actions {
    justify-content: center;
  }

  .how-media {
    order: 2;
  }

  .menu-toggle {
    display: flex;
  }

  .menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 16px;
    box-shadow: var(--shadow);
  }

  .menu.is-open {
    display: flex;
  }

  .menu li {
    width: 100%;
  }

  .menu a {
    display: block;
    padding: 12px 8px;
  }

  .menu .btn {
    width: 100%;
    margin-top: 8px;
  }
}

@media (max-width: 480px) {
  .btn-lg {
    width: 100%;
  }

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