:root {
  color-scheme: light;
  --ink: #1f2440;
  --ink-soft: #5b6185;
  --line: #e7e9f3;
  --sky: #4db8f0;
  --sky-deep: #1c83bd;
  --sky-wash: #e3f4fd;
  --sun: #ffc83d;
  --good: #35c27a;
  --radius: 28px;
  --font: ui-rounded, "SF Pro Rounded", "Nunito", "Varela Round", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font: 400 1.0625rem/1.6 var(--font);
  color: var(--ink);
  background: linear-gradient(180deg, var(--sky-wash) 0, #fff 640px) no-repeat, #fff;
}

a { color: var(--sky-deep); text-underline-offset: 3px; }
a:hover { color: var(--ink); }

.wrap { width: min(1080px, 100% - 32px); margin-inline: auto; }

/* Header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; font-weight: 800; font-size: 1.25rem; letter-spacing: -0.01em; }
.brand img { width: 44px; height: 44px; border-radius: 11px; box-shadow: 0 4px 14px rgb(31 36 64 / 0.12); }
.nav { display: flex; gap: 6px; flex-wrap: wrap; }
.nav a { padding: 8px 14px; border-radius: 999px; color: var(--ink-soft); text-decoration: none; font-weight: 700; font-size: 0.95rem; }
.nav a:hover, .nav a[aria-current="page"] { background: #fff; color: var(--ink); }

/* Hero */
.hero { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px; align-items: center; padding: 40px 0 72px; }
.eyebrow { display: inline-block; padding: 6px 14px; border-radius: 999px; background: #fff; color: var(--sky-deep); font-weight: 800; font-size: 0.85rem; letter-spacing: 0.04em; text-transform: uppercase; }
h1 { font-size: clamp(2.4rem, 6vw, 4rem); line-height: 1.04; letter-spacing: -0.03em; margin: 18px 0 16px; font-weight: 900; }
.lede { font-size: clamp(1.1rem, 2.2vw, 1.3rem); color: var(--ink-soft); max-width: 34ch; margin: 0 0 28px; }
.cta { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.store { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 18px; background: var(--ink); color: #fff; text-decoration: none; font-weight: 800; box-shadow: 0 6px 0 #0d1020; }
.store small { display: block; font-weight: 600; font-size: 0.72rem; opacity: 0.75; letter-spacing: 0.02em; }
.store span { line-height: 1.15; text-align: left; }
.note { color: var(--ink-soft); font-size: 0.95rem; }
.hero-art { position: relative; display: grid; place-items: center; }
.hero-art .icon { width: min(320px, 70vw); aspect-ratio: 1; border-radius: 22%; box-shadow: 0 30px 60px rgb(28 131 189 / 0.25), 0 8px 18px rgb(31 36 64 / 0.12); }
.bubble { position: absolute; padding: 10px 16px; border-radius: 18px; background: #fff; font-weight: 800; box-shadow: 0 10px 24px rgb(31 36 64 / 0.1); white-space: nowrap; }
.bubble.a { top: 6%; left: 0; transform: rotate(-6deg); }
.bubble.b { bottom: 10%; right: 0; transform: rotate(5deg); color: var(--good); }

/* Sections */
section { padding: 56px 0; }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 12px; font-weight: 900; }
.section-lede { color: var(--ink-soft); max-width: 60ch; margin: 0 0 32px; }

.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: 0 10px 30px rgb(31 36 64 / 0.05); }
.card h3 { margin: 12px 0 6px; font-size: 1.2rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--ink-soft); }
.tile { display: grid; place-items: center; width: 56px; height: 56px; border-radius: 18px; font-size: 1.8rem; }

.worlds { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.world { display: flex; gap: 14px; align-items: center; padding: 16px 18px; border-radius: 22px; background: var(--wash); }
.world .emoji { font-size: 2rem; }
.world b { display: block; }
.world span { color: var(--ink-soft); font-size: 0.92rem; line-height: 1.35; display: block; }
.world .age { color: var(--deep); font-weight: 800; font-size: 0.78rem; letter-spacing: 0.05em; text-transform: uppercase; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 18px; text-align: center; }
.stat b { display: block; font-size: clamp(2rem, 5vw, 2.8rem); letter-spacing: -0.02em; color: var(--sky-deep); line-height: 1.1; }
.stat span { color: var(--ink-soft); font-weight: 700; }

.promise { background: var(--ink); color: #fff; border-radius: 36px; padding: clamp(28px, 5vw, 56px); }
.promise h2 { color: #fff; }
.promise .section-lede { color: #c9cde6; }
.promise ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.promise li { background: rgb(255 255 255 / 0.07); border-radius: 20px; padding: 16px 18px; font-weight: 700; }
.promise li small { display: block; font-weight: 500; color: #c9cde6; margin-top: 4px; }

/* Long-form pages */
.doc { max-width: 760px; padding: 24px 0 72px; }
.doc h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); }
.doc h2 { font-size: 1.5rem; margin-top: 40px; }
.doc .updated { color: var(--ink-soft); font-weight: 700; }
.doc .summary { background: var(--sky-wash); border-radius: 22px; padding: 20px 24px; margin: 24px 0; }
.doc .summary p { margin: 0; }
.doc li { margin-bottom: 6px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 16px 20px; margin-bottom: 12px; }
.faq summary { cursor: pointer; font-weight: 800; }
.faq details p { color: var(--ink-soft); margin: 10px 0 0; }
.contact { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 20px 24px; margin: 24px 0; }
.contact .tile { background: var(--sky-wash); }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--ink-soft); font-size: 0.95rem; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--ink-soft); }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; padding-top: 16px; text-align: center; }
  .lede { margin-inline: auto; }
  .cta { justify-content: center; }
  .hero-art { order: -1; }
  .hero-art .icon { width: min(220px, 60vw); }
  .bubble { display: none; }
  .top { flex-direction: column; }
}

@media (prefers-reduced-motion: no-preference) {
  .store { transition: transform 0.12s ease-out, box-shadow 0.12s ease-out; }
  .store:active { transform: translateY(4px); box-shadow: 0 2px 0 #0d1020; }
}