:root {
  --duo-green: #58CC02;
  --duo-green-light: #61E002;
  --duo-green-dark: #46A302;
  --duo-green-shadow: #58A700;
  --ink: #3C3C3C;
  --ink-strong: #4B4B4B;
  --muted: #777777;
  --muted-light: #AFAFAF;
  --canvas: #FFFFFF;
  --wash-blue: #DDF4FF;
  --surface: #FFFFFF;
  --surface-alt: #F7F7F7;
  --border: #E5E5E5;
  --border-strong: #DADADA;
  --link-blue: #1CB0F6;
  --link-blue-dark: #1B99D6;
  --navy: #042C60;
  --super-navy: #100F3E;
  --super-ink: #000437;
  --footer-soft: #D7FFB8;
  --warning: #FFC800;
  --streak: #FF9600;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;
  --max: 988px;
  --wide: 1090px;
  --font-display: "Nunito", "Varela Round", system-ui, sans-serif;
  --font-body: "Nunito", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.41;
  color: var(--muted);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--link-blue-dark);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--link-blue);
  outline-offset: 2px;
}

.btn-primary:focus-visible {
  outline-color: var(--duo-green-dark);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 12px 16px;
  background: var(--duo-green);
  color: #fff;
  font-weight: 700;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
}

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

.container--wide {
  width: min(100% - 32px, var(--wide));
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--canvas);
  border-bottom: 1px solid var(--border);
  height: 72px;
  display: flex;
  align-items: center;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--duo-green);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--duo-green-dark);
}

.site-logo__mark {
  width: 36px;
  height: 36px;
}

.header-cta {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-family: inherit;
  font-weight: 700;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
  box-shadow: 0 3px 0 var(--border-strong);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease, box-shadow 0.1s ease;
}

.btn-primary {
  background: var(--duo-green);
  color: #fff;
  box-shadow: 0 4px 0 var(--duo-green-shadow);
}

.btn-primary:hover {
  background: var(--duo-green-light);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(4px);
  box-shadow: none;
}

.btn-secondary {
  background: var(--surface);
  color: var(--link-blue);
  border: 2px solid var(--border);
  box-shadow: 0 3px 0 var(--border-strong);
}

.btn-secondary:hover {
  background: var(--wash-blue);
  border-color: var(--link-blue);
  color: var(--link-blue-dark);
}

.btn-secondary:active {
  transform: translateY(3px);
  box-shadow: none;
}

.btn-super {
  background: #fff;
  color: var(--super-ink);
  box-shadow: 0 4px 0 rgba(255, 255, 255, 0.25);
}

.btn-super:hover {
  background: var(--wash-blue);
  color: var(--super-ink);
}

.btn-super:active {
  transform: translateY(4px);
  box-shadow: none;
}

.btn--block {
  width: 100%;
  max-width: 330px;
}

/* Hero */
.hero {
  padding: 48px 0 56px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero__visual {
  order: 1;
}

.hero__copy {
  order: 2;
}

.hero__eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 6px 14px;
  background: var(--wash-blue);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--navy);
}

.hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--duo-green);
}

.hero__subtitle {
  margin: 0 0 24px;
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink-strong);
  max-width: 480px;
}

.hero__lead {
  margin: 0 0 28px;
  max-width: 473px;
  color: var(--muted);
}

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

.hero-illustration {
  width: 100%;
  max-width: 424px;
  margin-inline: auto;
}

/* Brand rail */
.brand-rail {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  background: var(--surface);
}

.brand-rail__label {
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-light);
  margin-bottom: 16px;
}

.brand-rail__scroll {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--surface-alt);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.chip__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Benefits */
.benefits {
  padding: 96px 0;
}

.section-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--duo-green);
  text-align: center;
}

.section-lead {
  margin: 0 auto 48px;
  max-width: 560px;
  text-align: center;
}

.benefit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.benefit-card {
  padding: 28px 24px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 0 var(--border-strong);
}

.benefit-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
}

.benefit-card h3 {
  margin: 0 0 8px;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--ink-strong);
}

.benefit-card p {
  margin: 0;
  font-size: 16px;
}

/* Stats */
.stats {
  padding: 64px 0;
  background: var(--wash-blue);
}

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

.stat__value {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
}

.stat__label {
  margin: 8px 0 0;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

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

.feature:nth-child(even) {
  background: var(--surface-alt);
}

.feature__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.feature--reverse .feature__text {
  order: 2;
}

.feature--reverse .feature__visual {
  order: 1;
}

.feature__text h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--duo-green);
}

.feature__text p {
  margin: 0 0 24px;
  max-width: 503px;
}

/* Brands grid */
.brands {
  padding: 96px 0;
}

.brand-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.brand-card {
  padding: 24px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.15s ease;
}

.brand-card:hover {
  border-color: var(--duo-green);
}

.brand-card h3 {
  margin: 0 0 8px;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--ink-strong);
}

.brand-card p {
  margin: 0;
  font-size: 15px;
}

/* Super block */
.super-block {
  padding: 96px 0;
  background: var(--super-navy);
  color: #fff;
  text-align: center;
}

.super-block .section-title {
  color: #fff;
}

.super-block .section-lead {
  color: rgba(255, 255, 255, 0.75);
}

.super-block__glow {
  width: 120px;
  height: 120px;
  margin: 0 auto 32px;
}

.super-perks {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin: 40px 0 32px;
}

.super-perk {
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 700;
  color: var(--footer-soft);
}

/* Trust */
.trust {
  padding: 64px 0;
  text-align: center;
}

.trust__quote {
  margin: 0 auto;
  max-width: 640px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink-strong);
  line-height: 1.5;
}

.trust__cite {
  display: block;
  margin-top: 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--duo-green);
  font-style: normal;
}

/* Final CTA */
.final-cta {
  padding: 96px 0 120px;
  background: linear-gradient(180deg, var(--canvas) 0%, #e8f9d4 100%);
  text-align: center;
}

.final-cta h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--ink-strong);
}

.final-cta p {
  margin: 0 auto 32px;
  max-width: 480px;
}

/* Footer */
.site-footer {
  background: var(--duo-green);
  color: #fff;
  padding: 48px 0 32px;
}

.site-footer a {
  color: var(--footer-soft);
}

.site-footer a:hover {
  color: #fff;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
}

.footer__brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  margin: 0 0 8px;
}

.footer__note {
  margin: 0;
  font-size: 14px;
  opacity: 0.9;
  max-width: 400px;
}

.footer__legal {
  margin: 32px 0 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 13px;
  opacity: 0.85;
}

.disclaimer {
  margin-top: 24px;
  padding: 16px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  font-size: 12px;
  line-height: 1.5;
  max-width: 720px;
}

/* Mobile */
@media (max-width: 768px) {
  .site-header__inner {
    position: relative;
  }

  .nav-toggle {
    display: block;
  }

  .header-cta-wrap {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--border);
    padding: 16px;
  }

  .header-cta-wrap.is-open {
    display: block;
  }

  .header-cta-wrap .btn {
    width: 100%;
  }

  .hero__grid,
  .feature__grid {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    order: 2;
  }

  .hero__copy {
    order: 1;
    text-align: center;
  }

  .hero__subtitle,
  .hero__lead {
    margin-inline: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .feature--reverse .feature__text,
  .feature--reverse .feature__visual {
    order: unset;
  }

  .stats__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .disclaimer {
    margin-inline: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn {
    transition: none;
  }
}