:root {
  color-scheme: light dark;
  --paper: #fbfaf6;
  --ink: #191a22;
  --muted: #5f6270;
  --line: #d9d6cc;
  --card: #ffffff;
  --accent: #5d46d7;
  --accent-ink: #ffffff;
  --soft: #eeeafd;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(93, 70, 215, 0.12), transparent 34rem),
    var(--paper);
  color: var(--ink);
  line-height: 1.65;
}

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 0.14em; }
a:focus-visible, .button:focus-visible { outline: 3px solid #e17a2d; outline-offset: 3px; }

.skip-link {
  position: fixed;
  z-index: 10;
  left: 1rem;
  top: -5rem;
  padding: 0.65rem 0.9rem;
  background: var(--ink);
  color: var(--paper);
}
.skip-link:focus { top: 1rem; }

.site-header, main, .site-footer { width: min(100% - 2rem, 72rem); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1.25rem; }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; color: var(--ink); font-weight: 800; text-decoration: none; }
.brand img { width: 2.4rem; height: 2.4rem; border-radius: 0.75rem; }
nav { display: flex; flex-wrap: wrap; gap: 0.45rem 1rem; }
nav a { color: var(--ink); font-size: 0.94rem; }

main { padding-block: 4rem 5rem; }
.hero { max-width: 48rem; padding-block: 2rem 4rem; }
.eyebrow { color: var(--accent); font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
h1, h2 { line-height: 1.12; letter-spacing: -0.03em; }
h1 { margin: 0.3rem 0 1rem; font-size: clamp(2.6rem, 7vw, 5.6rem); }
h2 { margin-top: 2.4rem; font-size: clamp(1.55rem, 3vw, 2.2rem); }
p, li { max-width: 70ch; }
.lede { color: var(--muted); font-size: clamp(1.15rem, 2.4vw, 1.45rem); }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.7rem; }
.button { display: inline-block; border-radius: 999px; padding: 0.72rem 1.1rem; background: var(--accent); color: var(--accent-ink); font-weight: 800; text-decoration: none; }
.button.secondary { background: var(--soft); color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.card { padding: 1.25rem; border: 1px solid var(--line); border-radius: 1.1rem; background: color-mix(in srgb, var(--card) 94%, transparent); }
.card h2 { margin-top: 0; font-size: 1.3rem; }
.document { max-width: 52rem; }
.document h1 { font-size: clamp(2.4rem, 6vw, 4.3rem); }
.meta, .note { color: var(--muted); }
.note { padding: 1rem 1.1rem; border-left: 4px solid var(--accent); background: var(--soft); }
.site-footer { border-top: 1px solid var(--line); padding-block: 1.7rem 2.7rem; color: var(--muted); font-size: 0.9rem; }
.site-footer nav { margin-top: 0.65rem; }

/* Long-form product page */
.marketing-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.62fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
  min-height: 42rem;
  padding-bottom: 6rem;
}
.hero-copy { max-width: 48rem; }
.hero-copy h1 { font-size: clamp(3.2rem, 7.4vw, 6.5rem); }
.plain-facts { display: flex; flex-wrap: wrap; gap: 1rem 2rem; margin: 2.5rem 0 0; padding: 0; list-style: none; color: var(--muted); }
.plain-facts li { display: flex; align-items: baseline; gap: 0.4rem; }
.plain-facts strong { color: var(--ink); font-size: 1.45rem; }

.phone { margin: 0; }
.phone img {
  display: block;
  width: 100%;
  height: auto;
  border: 10px solid #15151b;
  border-radius: 3rem;
  background: #f6f8fb;
  box-shadow: 0 1.6rem 4.5rem rgba(24, 20, 45, 0.22);
}
.phone figcaption { margin: 0.8rem auto 0; max-width: 30rem; color: var(--muted); font-size: 0.85rem; text-align: center; }
.hero-phone { transform: rotate(1.5deg); }

.marketing-section { padding-block: clamp(4.5rem, 10vw, 8rem); border-top: 1px solid var(--line); scroll-margin-top: 2rem; }
.section-heading { max-width: 57rem; margin-bottom: 2.5rem; }
.section-heading h2, .feature-copy h2, .final-cta h2 { margin: 0.35rem 0 1rem; font-size: clamp(2.2rem, 5vw, 4.5rem); }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.steps li { display: flex; gap: 0.85rem; padding: 1.25rem; border: 1px solid var(--line); border-radius: 1.2rem; background: var(--card); }
.steps li > span { display: grid; place-items: center; flex: 0 0 2rem; width: 2rem; height: 2rem; border-radius: 50%; background: var(--soft); color: var(--accent); font-weight: 900; }
.steps p { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.92rem; }

.screenshot-pair { display: grid; grid-template-columns: minmax(16rem, 0.55fr) minmax(0, 1fr); align-items: center; gap: clamp(2.5rem, 8vw, 8rem); max-width: 66rem; margin: 6rem auto 0; }
.screenshot-pair.reverse { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; max-width: 54rem; }
.feature-copy { max-width: 38rem; }
.feature-copy > p:not(.eyebrow) { color: var(--muted); font-size: 1.08rem; }

.mechanics-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.mechanic-card { position: relative; min-height: 16rem; padding: 1.4rem; overflow: hidden; border: 1px solid var(--line); border-radius: 1.2rem; background: var(--card); }
.mechanic-card > span { position: absolute; right: 0.8rem; top: -0.5rem; color: var(--soft); font-size: 5.5rem; font-weight: 900; line-height: 1; }
.mechanic-card h3 { position: relative; margin: 2.5rem 0 0.6rem; font-size: 1.4rem; }
.mechanic-card p { position: relative; margin: 0; }
.mechanic-card small { position: relative; display: block; margin-top: 1rem; color: var(--muted); }

.mode-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.mode-card { padding: clamp(1.4rem, 4vw, 2.4rem); border: 1px solid var(--line); border-radius: 1.4rem; background: var(--card); }
.mode-card.play { background: var(--soft); }
.mode-card h3 { margin: 0.3rem 0 0.8rem; font-size: 1.65rem; }
.mode-card p:last-child { color: var(--muted); }
.mode-label { margin: 0; color: var(--accent); font-size: 0.8rem; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; }

.catalogue-heading { margin: 3.5rem 0 1rem; font-size: 1.65rem; }
.challenge-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.8rem; }
.challenge-grid article { padding: 1.1rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--card); }
.challenge-grid strong { font-size: 1.12rem; }
.challenge-grid p { margin: 0.35rem 0 0.8rem; color: var(--muted); font-size: 0.93rem; }
.challenge-grid small { display: block; color: var(--accent); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.045em; text-transform: uppercase; }
.play-grid article { background: color-mix(in srgb, var(--soft) 55%, var(--card)); }

.designer-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.55fr); align-items: center; gap: clamp(2.5rem, 8vw, 8rem); }
.price-card { display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: 0.2rem 0.8rem; max-width: 29rem; margin-top: 2rem; padding: 1.2rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--soft); }
.price-card strong { color: var(--accent); font-size: 2rem; }
.price-card span { font-weight: 800; }
.price-card small { grid-column: 1 / -1; color: var(--muted); }

.final-cta { display: grid; grid-template-columns: 8rem minmax(0, 1fr); align-items: center; gap: 2rem; max-width: 58rem; margin-inline: auto; }
.final-cta > img { width: 8rem; height: 8rem; border-radius: 2rem; box-shadow: 0 1rem 2.5rem rgba(24, 20, 45, 0.2); }
.final-cta p:not(.eyebrow) { color: var(--muted); }

@media (max-width: 48rem) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-header nav { width: 100%; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 0.35rem; }
  .site-header nav a { flex: 0 0 auto; white-space: nowrap; }
  .grid { grid-template-columns: 1fr; }
  main { padding-top: 2rem; }
  .marketing-hero, .designer-section, .screenshot-pair, .screenshot-pair.reverse { grid-template-columns: 1fr; }
  .marketing-hero { min-height: 0; }
  .hero-phone, .designer-section .phone, .screenshot-pair .phone { width: min(100%, 22rem); margin-inline: auto; transform: none; }
  .steps, .mechanics-grid, .challenge-grid, .mode-grid { grid-template-columns: 1fr; }
  .mechanic-card { min-height: 0; }
  .final-cta { grid-template-columns: 1fr; }
  .final-cta > img { width: 6rem; height: 6rem; }
}

@media (min-width: 48.01rem) and (max-width: 72rem) {
  .steps, .mechanics-grid, .challenge-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-color-scheme: dark) {
  :root { --paper: #121219; --ink: #f4f1e8; --muted: #b8b6c2; --line: #3a3945; --card: #1b1b25; --accent: #b9aaff; --accent-ink: #171124; --soft: #29243f; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}