:root {
  --color-background: #0a0a0f;
  --color-surface: #12121a;
  --color-accent: #4b72ff;
  --color-accent-soft: rgba(75, 114, 255, 0.12);
  --color-text: #f5f6f9;
  --color-muted: #a4a6b4;
  --color-card: #1a1a26;
  --color-card-border: rgba(255, 255, 255, 0.08);
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1100px;
  --transition: all 0.2s ease-in-out;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

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

.container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
}

.nav {
  position: relative;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.3rem;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(26, 26, 38, 0.9);
  cursor: pointer;
  transition: var(--transition);
}

.nav__toggle:hover {
  background: rgba(26, 26, 38, 1);
}

.nav__line {
  width: 1.5rem;
  height: 2px;
  background: var(--color-text);
  margin: 0 auto;
  display: block;
}

.nav__menu {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__menu a {
  text-decoration: none;
  color: var(--color-muted);
  font-weight: 500;
  transition: var(--transition);
}

.nav__menu a:hover,
.nav__menu a:focus {
  color: var(--color-text);
}

.hero {
  padding: 6rem 0 5rem;
  background: radial-gradient(circle at top left, rgba(75, 114, 255, 0.18), transparent 55%),
    radial-gradient(circle at bottom right, rgba(75, 114, 255, 0.18), transparent 50%);
}

.hero__content {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4rem;
  align-items: center;
}

.hero__text h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  line-height: 1.05;
  margin-bottom: 1rem;
}

.eyebrow {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--color-accent);
}

.lead {
  color: var(--color-muted);
  font-size: 1.05rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  align-items: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  border-radius: 0.9rem;
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 12px 30px rgba(75, 114, 255, 0.35);
}

.button:hover,
.button:focus {
  transform: translateY(-1px);
  box-shadow: 0 16px 32px rgba(75, 114, 255, 0.45);
}

.button--light {
  background: #fff;
  color: #0d1226;
  box-shadow: 0 14px 35px rgba(255, 255, 255, 0.12);
}

.link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  position: relative;
}

.link::after {
  content: '';
  position: absolute;
  bottom: -0.25rem;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.link:hover::after,
.link:focus::after {
  transform: scaleX(1);
}

.hero__card {
  background: var(--color-card);
  border: 1px solid var(--color-card-border);
  padding: 2rem;
  border-radius: 1.5rem;
  box-shadow: 0 35px 60px rgba(0, 0, 0, 0.3);
}

.hero__badge {
  display: inline-block;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.hero__quote {
  color: var(--color-muted);
  margin: 0;
  font-size: 1rem;
}

.section {
  padding: 5rem 0;
}

.section--dark {
  background: linear-gradient(160deg, #101020 0%, #050509 100%);
}

.section h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 1rem;
}

.section__lead {
  color: var(--color-muted);
  margin-bottom: 3rem;
  max-width: 640px;
}

.grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--color-card);
  padding: 2rem;
  border-radius: 1.25rem;
  border: 1px solid var(--color-card-border);
  box-shadow: 0 25px 40px rgba(0, 0, 0, 0.25);
}

.card ul {
  color: var(--color-muted);
  padding-left: 1.1rem;
}

.card li + li {
  margin-top: 0.4rem;
}

.steps {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.step__number {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(75, 114, 255, 0.12);
  border-radius: 999px;
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
}

.highlights {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.highlights article {
  padding: 1.5rem;
  border-radius: 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.highlights h3 {
  margin-top: 0;
}

.highlights p {
  color: var(--color-muted);
}

.cta {
  padding: 4.5rem 0;
  background: linear-gradient(120deg, rgba(75, 114, 255, 0.55), rgba(32, 35, 66, 0.95));
}

.cta__content {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: center;
  flex-wrap: wrap;
}

.cta__content h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: clamp(2.1rem, 4vw, 2.9rem);
}

.cta__content p {
  margin: 0;
}

.cta__actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.cta__note {
  max-width: 260px;
  color: rgba(13, 18, 38, 0.85);
}

.site-footer {
  padding: 2rem 0;
  background: #05050a;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer__content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  color: var(--color-muted);
}

.footer__links {
  display: flex;
  gap: 1.25rem;
}

.footer__links a {
  text-decoration: none;
  color: var(--color-muted);
  font-weight: 500;
  transition: var(--transition);
}

.footer__links a:hover,
.footer__links a:focus {
  color: var(--color-text);
}

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

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

  .hero__card {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: absolute;
    top: calc(100% + 0.75rem);
    right: 0;
    background: var(--color-card);
    border-radius: 1rem;
    padding: 1.25rem;
    border: 1px solid var(--color-card-border);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
    flex-direction: column;
    gap: 1rem;
    min-width: 220px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: var(--transition);
  }

  .nav__menu[aria-hidden='false'] {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hero {
    padding-top: 5rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .section,
  .hero {
    padding: 4rem 0;
  }

  .hero__card,
  .card,
  .highlights article {
    padding: 1.6rem;
  }

  .cta__content {
    align-items: flex-start;
  }

  .footer__content {
    flex-direction: column;
    align-items: flex-start;
  }
}