:root {
  color-scheme: light dark;
  --background: #f6f8fc;
  --surface: #fff;
  --text: #182139;
  --muted: #58647a;
  --accent: #3b59e3;
  --accent-soft: #edf1ff;
  --border: #e1e6ef;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  background: var(--background);
  color: var(--text);
  -webkit-text-size-adjust: 100%;
}
* { box-sizing: border-box; }
body { margin: 0; }
.vocab {
  color-scheme: dark;
  --background: #11110f;
  --surface: #1b1a17;
  --text: #f5f0e6;
  --muted: #b9b1a3;
  --accent: #d6b46f;
  --accent-soft: #29251d;
  --border: #343027;
  background: var(--background);
  color: var(--text);
}
a { color: var(--accent); text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
img { display: block; max-width: 100%; height: auto; }
p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }
h1, h2, h3 { color: var(--text); line-height: 1.15; text-wrap: balance; }
h1, h2 { letter-spacing: -0.04em; }
h1 { margin: 0; font-size: clamp(2.65rem, 5.6vw, 4.2rem); font-weight: 750; }
h1 span { color: var(--accent); }
h2 { margin: 0 0 1rem; font-size: clamp(1.7rem, 3vw, 2.25rem); }
h3 { margin: 0 0 0.65rem; font-size: 1.1rem; letter-spacing: -0.015em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
#main:focus { outline: none; }
section[id] { scroll-margin-top: 2rem; }
.site-header, main, .site-footer { width: min(64rem, calc(100% - 3rem)); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; padding-block: 1.5rem; border-bottom: 1px solid var(--border); }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; color: var(--text); font-size: 1.1rem; font-weight: 750; line-height: 1.25; text-decoration: none; }
.brand img { border-radius: 11px; }
.brand-detail { display: block; margin-top: 0.2rem; color: var(--muted); font-size: 0.75rem; font-weight: 400; }
.page-nav { display: flex; flex-wrap: wrap; gap: 0.25rem; }
.page-nav a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0.5rem 0.85rem; border-radius: 12px; color: var(--muted); font-size: 0.875rem; font-weight: 600; text-decoration: none; }
.page-nav a:hover, .page-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }
.skip-link { position: fixed; top: 0.75rem; left: 1rem; z-index: 2; padding: 0.65rem 1rem; border-radius: 10px; background: var(--surface); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.hero { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr); gap: 3rem; align-items: center; padding-block: 4rem; }
.eyebrow { margin-bottom: 0.85rem; color: var(--accent); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.intro { max-width: 36rem; margin-top: 1.4rem; color: var(--muted); font-size: 1.1rem; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1.4rem; margin-top: 1.75rem; }
.text-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 0.9rem; font-weight: 600; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0.7rem 1.2rem; border-radius: 14px; background: var(--accent); color: var(--background); font-size: 0.9rem; font-weight: 700; text-decoration: none; }
.lighter .button { background: #3b59e3; color: #fff; }
.button:hover { text-decoration: underline; }
.store-link { display: inline-flex; align-items: center; min-height: 48px; }
.fine-print { margin-top: 0.85rem; color: var(--muted); font-size: 0.8rem; }
.app-facts { display: flex; flex-wrap: wrap; gap: 0.35rem 1.1rem; margin: 1.5rem 0 0; padding: 0; color: var(--muted); font-size: 0.8rem; list-style: none; }
.app-facts li { padding-left: 0.8rem; position: relative; }
.app-facts li::before { content: ""; position: absolute; top: 0.65em; left: 0; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }
.app-preview { margin: 0; text-align: center; }
.app-preview img { width: 236px; margin-inline: auto; border: 1px solid var(--border); border-radius: 30px; box-shadow: 0 18px 55px rgb(0 0 0 / 12%); }
.app-preview figcaption { max-width: 18rem; margin: 1rem auto 0; color: var(--muted); font-size: 0.8rem; }
.section { padding-block: 3.5rem; border-top: 1px solid var(--border); }
.section-intro { max-width: 42rem; margin-bottom: 1.75rem; color: var(--muted); }
.steps, .feature-grid, .audience-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; margin: 0; padding: 0; list-style: none; }
.steps p, .feature-grid p, .audience-grid p { color: var(--muted); font-size: 0.95rem; }
.step-number { display: grid; place-items: center; width: 34px; height: 34px; margin-bottom: 1rem; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: 0.85rem; font-weight: 700; }
.feature-grid { gap: 1rem; }
.feature { padding: 1.6rem; border: 1px solid var(--border); border-radius: 20px; background: var(--surface); }
.audience-grid { gap: 2rem; }
.note { margin-top: 1.75rem; padding: 0.25rem 0 0.25rem 1.25rem; border-left: 3px solid var(--accent); color: var(--muted); font-size: 0.875rem; }
.note strong { color: var(--text); }
.faq-list { padding: 0 1.5rem; border: 1px solid var(--border); border-radius: 20px; background: var(--surface); }
details + details { border-top: 1px solid var(--border); }
summary { min-height: 48px; padding-block: 1.2rem; cursor: pointer; color: var(--text); font-size: 1rem; font-weight: 600; }
summary::marker { color: var(--accent); }
.answer { max-width: 48rem; padding: 0 0 1.3rem 1.1rem; color: var(--muted); font-size: 0.95rem; }
.closing { margin-bottom: 3.5rem; padding: 2.5rem; border: 1px solid var(--border); border-radius: 24px; background: var(--accent-soft); }
.closing p { max-width: 38rem; color: var(--muted); }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; padding-block: 1.5rem 2.5rem; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.8rem; }
.site-footer p { margin: 0; }
.site-footer a { color: var(--muted); }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
@media (prefers-color-scheme: dark) {
  :root { --background: #0e1117; --surface: #191e29; --text: #f1f4fc; --muted: #adb7cc; --accent: #8da4ff; --accent-soft: #202b49; --border: #2c3548; }
}
@media (max-width: 48rem) {
  .site-header { flex-direction: column; align-items: flex-start; gap: 1.25rem; }
  .page-nav { display: grid; width: 100%; grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-nav a { padding-inline: 0.25rem; font-size: 0.8rem; }
  .hero { grid-template-columns: 1fr; gap: 2.5rem; padding-block: 2.75rem; }
  .hero-copy { max-width: 36rem; }
  .steps, .feature-grid, .audience-grid { grid-template-columns: 1fr; }
  .steps { gap: 1.75rem; }
  .steps li { position: relative; padding-left: 3rem; }
  .step-number { position: absolute; left: 0; top: 0; }
  .section { padding-block: 2.75rem; }
  .closing { padding: 1.75rem; }
}
@media (max-width: 28rem) {
  .site-header, main, .site-footer { width: calc(100% - 2rem); }
  .intro { font-size: 1rem; }
  .feature { padding: 1.4rem; }
  .faq-list { padding-inline: 1.2rem; }
  .closing { padding: 1.4rem; }
}
@media print {
  :root, .vocab { color-scheme: light; --background: #fff; --surface: #fff; --text: #000; --muted: #333; --accent: #000; --accent-soft: #fff; --border: #ccc; }
  .skip-link, .page-nav, .actions, .app-preview { display: none; }
  .site-header, main, .site-footer { width: 100%; }
  .hero { display: block; }
  .section, .hero { padding-block: 1.5rem; }
  .feature { break-inside: avoid; }
}