:root {
  color-scheme: light dark;
  --page: #f5f7fa;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-solid: #ffffff;
  --surface-muted: #edf1f5;
  --ink: #12213a;
  --muted: #607086;
  --line: rgba(18, 33, 58, 0.11);
  --accent: #1e5ab6;
  --accent-hover: #164b9c;
  --accent-soft: #e8f0fc;
  --shadow: 0 24px 70px rgba(24, 40, 68, 0.14), 0 3px 12px rgba(24, 40, 68, 0.07);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 8%, rgba(63, 127, 219, 0.13), transparent 28rem),
    radial-gradient(circle at 10% 38%, rgba(71, 166, 134, 0.08), transparent 24rem),
    var(--page);
}

a { color: inherit; }

.site-header,
main,
footer {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  border-radius: 10px;
  outline: 1px solid oklch(0 0 0 / 0.1);
}

nav { display: flex; gap: 6px; }

nav a,
footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding-inline: 14px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition-property: color, background-color;
  transition-duration: 150ms;
  transition-timing-function: ease;
}

.hero {
  min-height: 660px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.86fr);
  align-items: center;
  gap: clamp(50px, 8vw, 96px);
  padding-block: 72px 100px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
h1, h2 { text-wrap: balance; letter-spacing: -0.035em; }
p { text-wrap: pretty; }

h1 {
  margin-bottom: 24px;
  font-size: clamp(44px, 6vw, 70px);
  line-height: 0.99;
}

.hero-summary {
  max-width: 610px;
  margin-bottom: 32px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.55;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  touch-action: manipulation;
  transition-property: color, background-color, box-shadow;
  transition-duration: 160ms;
  transition-timing-function: ease;
}

.button svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.button-primary { color: #fff; background: var(--accent); box-shadow: 0 8px 20px rgba(30, 90, 182, 0.22); }
.button-secondary { color: var(--ink); background: var(--surface); box-shadow: inset 0 0 0 1px var(--line); }

.requirement { margin: 17px 0 0; color: var(--muted); font-size: 13px; }

.app-shot { margin: 0; text-align: center; }
.app-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  outline: 1px solid oklch(0 0 0 / 0.1);
  box-shadow: var(--shadow);
}
.app-shot figcaption { margin-top: 14px; color: var(--muted); font-size: 12px; }

.feature-section,
.install-section { padding-block: 110px; }

.section-heading { max-width: 650px; margin-bottom: 42px; }
.section-heading h2 { margin-bottom: 16px; font-size: clamp(34px, 4.3vw, 52px); line-height: 1.05; }
.section-heading > p:last-child { color: var(--muted); font-size: 18px; line-height: 1.55; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.feature-grid article {
  min-height: 215px;
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--line), 0 10px 30px rgba(24, 40, 68, 0.04);
}

.feature-icon { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 25px; border-radius: 12px; color: var(--accent); background: var(--accent-soft); font-size: 20px; font-weight: 750; }
.feature-grid h3 { margin-bottom: 9px; font-size: 17px; }
.feature-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }

.install-section { padding-bottom: 70px; }
.install-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 0 0 20px; padding: 0; list-style: none; }
.install-steps li { display: flex; gap: 14px; padding: 22px; border-radius: var(--radius-md); box-shadow: inset 0 0 0 1px var(--line); }
.install-steps li > span { flex: 0 0 auto; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; color: var(--page); background: var(--ink); font-size: 13px; font-weight: 750; font-variant-numeric: tabular-nums; }
.install-steps strong { display: block; margin: 5px 0 6px; }
.install-steps p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.5; }

.install-cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 28px; border-radius: var(--radius-md); color: #fff; background: var(--ink); }
.install-cta strong { font-size: 18px; }
.install-cta p { margin: 4px 0 0; color: rgba(255, 255, 255, 0.68); font-size: 14px; }
.install-cta .button-primary { color: var(--ink); background: #fff; box-shadow: none; }
.gatekeeper-note { max-width: 760px; margin: 18px 4px 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.gatekeeper-note a { color: var(--accent); font-weight: 650; }

footer {
  min-height: 110px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

footer p { margin: 0; }
footer > div { display: flex; }
footer a { padding-inline: 10px; }

:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent), transparent 35%); outline-offset: 3px; }

@media (hover: hover) and (pointer: fine) {
  nav a:hover,
  footer a:hover { color: var(--ink); background: var(--surface-muted); }
  .button-primary:hover { background: var(--accent-hover); box-shadow: 0 9px 24px rgba(30, 90, 182, 0.3); }
  .button-secondary:hover { background: var(--surface-solid); box-shadow: inset 0 0 0 1px var(--line), 0 7px 18px rgba(24, 40, 68, 0.08); }
  .install-cta .button-primary:hover { background: #eef3fb; }
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 60px; }
  .hero-copy { max-width: 680px; }
  .app-shot { width: min(100%, 420px); margin-inline: auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .install-steps { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .site-header,
  main,
  footer { width: min(100% - 28px, 1120px); }
  .site-header { min-height: 72px; }
  nav a:not(:last-child) { display: none; }
  h1 { font-size: clamp(41px, 13vw, 58px); }
  .hero { gap: 54px; padding-block: 52px 72px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .feature-section,
  .install-section { padding-block: 76px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article { min-height: auto; }
  .install-cta { align-items: stretch; flex-direction: column; }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: 28px; }
  footer > div { margin-left: -10px; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #0d1420;
    --surface: rgba(24, 34, 49, 0.88);
    --surface-solid: #1c2737;
    --surface-muted: #202c3d;
    --ink: #f0f4fa;
    --muted: #9aa9bc;
    --line: rgba(255, 255, 255, 0.1);
    --accent: #6fa8f7;
    --accent-hover: #8bb9f8;
    --accent-soft: rgba(111, 168, 247, 0.13);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.32), 0 3px 12px rgba(0, 0, 0, 0.24);
  }
  .brand img { outline-color: oklch(1 0 0 / 0.1); }
  .app-shot img { outline-color: oklch(1 0 0 / 0.1); }
  .button-primary { color: #07111f; }
  .install-cta { color: #0c1727; background: #dce9fa; }
  .install-cta p { color: rgba(12, 23, 39, 0.65); }
  .install-cta .button-primary { color: #fff; background: #183d73; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}