:root {
  --font-family-base: "Inter", sans-serif;

  --color-primary: #006d31;
  --color-on-primary: #ffffff;
  --color-primary-container: #99f6ab;
  --color-on-primary-container: #00210a;
  --color-secondary: #19608e;
  --color-on-secondary: #ffffff;
  --color-secondary-container: #c8e6ff;
  --color-on-secondary-container: #001e2f;
  --color-tertiary: #4a6354;
  --color-on-tertiary: #ffffff;
  --color-tertiary-container: #dce5dd;
  --color-on-tertiary-container: #1a2e22;
  --color-bg: #fbfdf8;
  --color-surface: #fbfdf8;
  --color-surface-container: #ecefe9;
  --color-surface-container-low: #f2f5ef;
  --color-surface-container-high: #e6e9e3;
  --color-text-primary: #191c19;
  --color-text-secondary: #414941;
  --color-text-muted: #717971;
  --color-border: #c1c9bf;

  --text-display-sm-size: 2.25rem;
  --text-display-sm-line: 2.75rem;
  --text-headline-md-size: 1.75rem;
  --text-headline-md-line: 2.25rem;
  --text-title-lg-size: 1.375rem;
  --text-title-lg-line: 1.75rem;
  --text-title-md-size: 1rem;
  --text-title-md-line: 1.5rem;
  --text-body-lg-size: 1rem;
  --text-body-lg-line: 1.5rem;
  --text-body-md-size: 0.875rem;
  --text-body-md-line: 1.25rem;
  --text-body-sm-size: 0.75rem;
  --text-body-sm-line: 1rem;
  --text-label-lg-size: 0.875rem;
  --text-label-lg-line: 1.25rem;
  --text-label-md-size: 0.75rem;
  --text-label-md-line: 1rem;
  --text-label-sm-size: 0.6875rem;
  --text-label-sm-line: 1rem;

  --space-1: 4px;
  --space-1_5: 6px;
  --space-2: 8px;
  --space-2_5: 10px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;

  --radius-sm: 10px;
  --radius-md: 12px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-2xl: 20px;
  --radius-pill: 24px;
  --radius-full: 9999px;

  --size-btn-md: 56px;
  --size-btn-lg: 64px;
  --size-icon-sm: 16px;
  --size-icon-md: 20px;
  --size-icon-lg: 24px;
  --size-icon-tile: 44px;
  --size-badge: 48px;

  --shadow-none: none;
  --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] {
  --color-primary: #7ed991;
  --color-on-primary: #003916;
  --color-primary-container: #005223;
  --color-on-primary-container: #99f6ab;
  --color-secondary: #8ccbff;
  --color-on-secondary: #00344e;
  --color-secondary-container: #004a6f;
  --color-on-secondary-container: #c8e6ff;
  --color-tertiary: #b8ccb9;
  --color-on-tertiary: #243529;
  --color-tertiary-container: #3a4c3e;
  --color-on-tertiary-container: #d4e8d5;
  --color-bg: #191c19;
  --color-surface: #191c19;
  --color-surface-container: #1d211d;
  --color-surface-container-low: #191c19;
  --color-surface-container-high: #282b27;
  --color-text-primary: #e1e3dd;
  --color-text-secondary: #c1c9bf;
  --color-text-muted: #8b938a;
  --color-border: #414941;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family-base);
  background:
    radial-gradient(circle at top, var(--color-surface-container-high), var(--color-bg) 45%),
    var(--color-bg);
  color: var(--color-text-primary);
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
a,
.card,
.device-frame {
  transition:
    transform 200ms ease,
    opacity 200ms ease,
    background-color 200ms ease,
    border-color 200ms ease;
}

.page-shell {
  width: min(100%, calc(var(--space-12) * 25));
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-12);
}

.section {
  margin-top: var(--space-12);
}

.hero {
  margin-top: 0;
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  background:
    radial-gradient(circle at top, var(--color-surface-container-high), transparent 55%),
    var(--color-primary-container);
  color: var(--color-on-primary-container);
  display: grid;
  gap: var(--space-8);
  overflow: hidden;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -20% auto;
  width: 180px;
  height: 180px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  opacity: 0.12;
}

.hero__content,
.hero__visual {
  position: relative;
  z-index: 1;
}

.theme-toggle-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
}

.switch {
  position: relative;
  display: inline-block;
  width: 2.75rem;
  height: 1.6rem;
  font-size: 14px;
  cursor: pointer;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
}

.slider::before {
  position: absolute;
  content: "";
  height: 1.1rem;
  width: 1.1rem;
  right: 0.2rem;
  bottom: 0.18rem;
  transform: translateX(150%);
  background-color: var(--color-primary);
  border-radius: inherit;
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
}

.slider::after {
  position: absolute;
  content: "";
  height: 1.1rem;
  width: 1.1rem;
  left: 0.2rem;
  bottom: 0.18rem;
  background-color: var(--color-surface-container-high);
  border: 1px solid var(--color-border);
  border-radius: inherit;
  box-shadow: var(--shadow-soft);
  transition: all 0.4s cubic-bezier(0.215, 0.61, 0.355, 1);
}

.switch input:focus + .slider {
  box-shadow: 0 0 0 1px var(--color-primary);
}

.switch input:checked + .slider {
  background: var(--color-primary-container);
  border-color: var(--color-primary);
}

.switch input:checked + .slider::before {
  transform: translateY(0);
}

.switch input:checked + .slider::after {
  transform: translateX(-150%);
}

.hero__content {
  display: grid;
  justify-items: center;
  text-align: center;
}

.hero__logo {
  width: calc(var(--space-12) * 1.5);
  margin-bottom: var(--space-4);
}

.eyebrow,
.section-label {
  margin: 0 0 var(--space-3);
  font-size: var(--text-label-lg-size);
  line-height: var(--text-label-lg-line);
  font-weight: 600;
  letter-spacing: 0.1px;
}

.hero h1,
.hero h2,
.section-heading h2,
.cta h2 {
  margin: 0;
}

.hero h1 {
  font-size: var(--text-display-sm-size);
  line-height: var(--text-display-sm-line);
  font-weight: 700;
}

.hero h2 {
  margin-top: var(--space-3);
  font-size: var(--text-headline-md-size);
  line-height: var(--text-headline-md-line);
  font-weight: 600;
  max-width: 14ch;
}

.hero__subtitle,
.cta__text,
.benefit-card p,
.step-card p,
.footer a,
.policy p,
.policy li {
  font-size: var(--text-body-lg-size);
  line-height: calc(var(--text-body-lg-line) * 1.3);
}

.hero__subtitle {
  margin: var(--space-4) 0 var(--space-6);
  max-width: calc(var(--space-12) * 7);
}

.hero__content .btn {
  justify-self: center;
}

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

.device-frame {
  width: min(100%, calc(var(--space-8) * 10));
  padding: var(--space-3);
  border-radius: calc(var(--radius-2xl) + var(--space-1));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  animation: float-device 2000ms ease-in-out infinite alternate;
}

.device-frame img {
  width: 100%;
  aspect-ratio: 9 / 19.5;
  object-fit: cover;
  border-radius: var(--radius-2xl);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--size-btn-md);
  padding: 0 var(--space-4);
  border-radius: var(--radius-xl);
  border: 0;
  font-size: var(--text-label-lg-size);
  line-height: var(--text-label-lg-line);
  font-weight: 600;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  min-height: var(--size-btn-lg);
  padding: 0 var(--space-8);
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.playstore-banner {
  margin-top: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--size-btn-md);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.playstore-banner:hover {
  transform: translateY(-1px);
}

.playstore-banner:active {
  transform: scale(0.98);
}

.playstore-banner__icon {
  width: var(--size-icon-tile);
  height: var(--size-icon-tile);
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: var(--radius-lg);
  background: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
}

.playstore-banner__icon svg {
  width: var(--size-icon-lg);
  height: var(--size-icon-lg);
}

.playstore-banner__text {
  display: grid;
  text-align: left;
}

.playstore-banner__label {
  font-size: var(--text-label-md-size);
  line-height: var(--text-label-md-line);
  color: var(--color-text-secondary);
}

.playstore-banner__title {
  font-size: var(--text-title-md-size);
  line-height: var(--text-title-md-line);
  font-weight: 600;
}

.section-heading {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.section-heading h2 {
  font-size: var(--text-headline-md-size);
  line-height: var(--text-headline-md-line);
  font-weight: 600;
  max-width: 18ch;
}

.card {
  background: var(--color-surface-container);
  border-radius: var(--radius-2xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-none);
  border: 1px solid transparent;
}

.steps,
.benefits {
  display: grid;
  gap: var(--space-4);
}

.step-card,
.benefit-card {
  min-height: 100%;
}

.step-card {
  display: grid;
  gap: var(--space-4);
}

.icon-tile {
  width: var(--size-badge);
  height: var(--size-badge);
  display: grid;
  place-items: center;
  border-radius: var(--radius-lg);
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
}

.icon-tile svg {
  width: var(--size-icon-lg);
  height: var(--size-icon-lg);
}

.step-card p,
.benefit-card p,
.cta__text {
  margin: 0;
}

.screenshots-scroll {
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.screenshots-grid {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 78%);
  gap: var(--space-4);
}

.screenshot-card {
  padding: var(--space-3);
  background: var(--color-surface-container);
}

.screenshot-card img {
  width: 100%;
  aspect-ratio: 9 / 19.5;
  object-fit: cover;
  border-radius: var(--radius-2xl);
}

.cta {
  padding: var(--space-8);
  background:
    radial-gradient(circle at top right, var(--color-primary-container), transparent 60%),
    var(--color-surface-container);
  text-align: center;
}

.cta h2 {
  font-size: var(--text-headline-md-size);
  line-height: var(--text-headline-md-line);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.cta .btn {
  margin-top: var(--space-6);
}

.footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

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

.reveal {
  opacity: 0;
  transform: scale(0.95);
}

.reveal.is-visible {
  opacity: 1;
  transform: scale(1);
}

.policy-shell {
  width: min(100%, 800px);
  margin: 0 auto;
  padding: var(--space-8) var(--space-4) var(--space-12);
}

.policy {
  margin-top: var(--space-8);
}

.policy h1 {
  margin: 0 0 var(--space-4);
  font-size: var(--text-headline-md-size);
  line-height: var(--text-headline-md-line);
}

.policy h2 {
  margin: 0 0 var(--space-3);
  font-size: var(--text-title-lg-size);
  line-height: var(--text-title-lg-line);
}

.policy ul {
  margin: 0;
  padding-left: var(--space-5);
}

@keyframes float-device {
  from {
    transform: translateY(0);
  }

  to {
    transform: translateY(12px);
  }
}

@media (min-width: 768px) {
  .page-shell {
    padding: var(--space-8) var(--space-6) var(--space-12);
  }

  .hero {
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    align-items: center;
  }

  .theme-toggle-wrap {
    grid-column: 1 / -1;
  }

  .hero__content {
    justify-items: start;
    text-align: left;
  }

  .hero__content .btn {
    justify-self: start;
  }

  .steps,
  .benefits {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .benefits {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .screenshots-grid {
    grid-auto-flow: unset;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer {
    flex-direction: row;
    justify-content: space-between;
  }
}

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

  .reveal,
  .reveal.is-visible,
  .device-frame,
  .btn,
  .card {
    animation: none;
    transition: none;
    transform: none;
    opacity: 1;
  }
}