: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;
  --max: 988px;
  --wide: 1090px;
  --section-pad: 96px;
  --font-display: "Nunito", 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);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 22px;
  color: var(--duo-green);
  letter-spacing: -0.02em;
}

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.header-cta {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--link-blue);
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  border-bottom-width: 4px;
  border-bottom-color: var(--border-strong);
  background: var(--surface);
  transition: background 0.15s ease, transform 0.1s ease;
}

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

.header-cta:active {
  transform: translateY(3px);
  border-bottom-width: 1px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, transform 0.1s 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);
  border-bottom-width: 4px;
  border-bottom-color: 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);
  border-bottom-width: 1px;
}

.btn-super {
  background: #fff;
  color: var(--super-ink);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 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;
  gap: 40px;
  align-items: center;
}

.hero__visual {
  order: 2;
  display: flex;
  justify-content: center;
}

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

.hero__eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy);
  background: var(--wash-blue);
  border-radius: var(--radius-pill, 999px);
}

.hero__title {
  margin: 0 0 8px;
  font-size: clamp(2.75rem, 8vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--duo-green);
}

.hero__subtitle {
  margin: 0 0 16px;
  font-size: clamp(1.35rem, 3.5vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink-strong);
}

.hero__lead {
  margin: 0 auto 28px;
  max-width: 480px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--muted);
}

.hero__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.hero-illustration {
  width: min(100%, 424px);
  aspect-ratio: 424 / 380;
}

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

.app-rail__inner {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-rail__label {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted-light);
}

.app-rail__track {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  flex: 1;
  padding: 4px 0;
}

.app-rail__track::-webkit-scrollbar {
  display: none;
}

.chip {
  flex-shrink: 0;
  scroll-snap-align: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  border-bottom-width: 3px;
  border-bottom-color: var(--border-strong);
}

.chip__icon {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

.rail-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border: 2px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  cursor: pointer;
  font-size: 18px;
  color: var(--muted);
  line-height: 1;
}

.rail-btn:hover {
  border-color: var(--link-blue);
  color: var(--link-blue);
}

/* Benefits */
.benefits {
  padding: var(--section-pad) 0;
}

.section-title {
  margin: 0 0 40px;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--duo-green);
  text-align: center;
}

.benefit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  max-width: 640px;
  margin-inline: auto;
}

.benefit-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 20px;
  background: var(--wash-blue);
  border-radius: var(--radius-lg);
  color: var(--ink-strong);
  font-weight: 600;
}

.benefit-list .check {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--duo-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

/* Feature sections */
.feature {
  padding: var(--section-pad) 0;
}

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

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

.feature__grid--reverse .feature__visual {
  order: 2;
}

.feature__grid--reverse .feature__text {
  order: 1;
}

.feature__heading {
  margin: 0 0 16px;
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--duo-green);
}

.feature__text p {
  margin: 0 0 20px;
  max-width: 503px;
}

.feature__visual svg {
  width: min(100%, 530px);
  margin-inline: auto;
}

.feature__cta {
  margin-top: 8px;
}

/* Trust */
.trust {
  padding: var(--section-pad) 0;
  text-align: center;
  background: var(--wash-blue);
}

.trust__title {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--navy);
}

.trust__sub {
  margin: 0 0 36px;
  font-size: 17px;
  color: var(--muted);
}

.trust__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 720px;
  margin-inline: auto;
}

.stat-card {
  padding: 28px 24px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 2px solid var(--border);
  border-bottom-width: 4px;
  border-bottom-color: var(--border-strong);
}

.stat-card__num {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--duo-green);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-card__label {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
}

.trust__audience {
  margin-top: 40px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted-light);
}

.trust__tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 12px;
}

.trust__tags span {
  padding: 8px 16px;
  background: var(--surface);
  border-radius: var(--radius-pill, 999px);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  border: 2px solid var(--border);
}

/* Super block */
.super-block {
  padding: 80px 0;
  background: var(--super-navy);
  color: #fff;
  text-align: center;
}

.super-block__title {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: #fff;
}

.super-block__lead {
  margin: 0 auto 32px;
  max-width: 560px;
  font-size: 18px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.75);
}

.super-block__points {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
}

.super-block__points span {
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 700;
  color: var(--footer-soft);
}

/* Final CTA */
.final-cta {
  padding: 80px 0 100px;
  text-align: center;
  background: linear-gradient(180deg, var(--canvas) 0%, #e8f9d4 100%);
}

.final-cta__title {
  margin: 0 0 12px;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--duo-green);
}

.final-cta__text {
  margin: 0 auto 28px;
  max-width: 520px;
}

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

.site-footer a {
  color: var(--footer-soft);
  font-weight: 600;
}

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

.footer__grid {
  display: grid;
  gap: 32px;
  margin-bottom: 32px;
}

.footer__brand {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin: 0 0 8px;
}

.footer__tagline {
  margin: 0;
  color: var(--footer-soft);
  font-size: 15px;
  max-width: 320px;
}

.footer__heading {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
}

.footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__links li {
  margin-bottom: 8px;
}

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 14px;
  color: var(--footer-soft);
  text-align: center;
}

.footer__disclaimer {
  margin-top: 12px;
  font-size: 13px;
  opacity: 0.9;
}

@media (min-width: 768px) {
  .hero__grid {
    grid-template-columns: 424px 1fr;
    gap: 48px;
  }

  .hero__visual {
    order: 1;
  }

  .hero__copy {
    order: 2;
    text-align: left;
  }

  .hero__lead {
    margin-left: 0;
  }

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

  .feature__grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

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

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

  .trust__stats {
    grid-template-columns: 1fr 1fr;
  }

  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: minmax(320px, 424px) minmax(280px, 480px);
    justify-content: space-between;
  }
}

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

  .btn-primary:active,
  .btn-secondary:active,
  .btn-super:active,
  .header-cta:active {
    transform: none;
  }
}