/* The public pages around the app — How it works, the guide, the AI page —
   in the same look as the privacy policy and terms. Plain HTML that reads
   without JavaScript, for people and for crawlers. */
:root {
  --purple: #6c5ce7;
  --purple-dark: #5a4bd1;
  --green: #017a57;
  --text: #2d3436;
  --muted: #5f676b;
  --line: #e8e8ee;
  --bg: #fdfdff;
  --card: #ffffff;
  --tint: #f4f2ff;
  --tint-line: #ddd8ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 780px; margin: 0 auto; padding: 28px 20px 72px; }
header { border-bottom: 1px solid var(--line); padding-bottom: 18px; margin-bottom: 28px; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.logo {
  font-size: 20px; font-weight: 800; text-decoration: none;
  display: inline-flex; align-items: center; gap: 9px; letter-spacing: -0.4px;
}
.w-kid { color: var(--purple); }
.w-learn { color: var(--text); }
.w-cash { color: var(--green); }
nav { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 15px; }
nav a { color: var(--text); text-decoration: none; padding: 6px 0; }
nav a:hover, nav a[aria-current="page"] { color: var(--purple); }
h1 { font-size: 32px; margin: 22px 0 8px; line-height: 1.2; letter-spacing: -0.5px; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 8px; }
h2 { font-size: 22px; margin: 40px 0 10px; line-height: 1.3; }
h3 { font-size: 17px; margin: 22px 0 6px; }
p, li { font-size: 16px; }
ul, ol { padding-left: 22px; }
li { margin-bottom: 8px; }
a { color: var(--purple); }
.callout {
  background: var(--tint); border: 1px solid var(--tint-line); border-radius: 14px;
  padding: 16px 18px; margin: 24px 0;
}
.callout p { margin: 0; }
.callout p + p { margin-top: 8px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 18px 0; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.feature h3 { margin: 0 0 4px; font-size: 16px; }
.feature p { margin: 0; font-size: 15px; color: var(--muted); }
.table-wrap { overflow-x: auto; margin: 16px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 700; }
.prompt {
  display: block; background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 14px; margin: 8px 0; font-size: 15px;
}
code { font-size: 14px; background: var(--tint); border-radius: 6px; padding: 2px 6px; word-break: break-all; }
.cta {
  display: inline-block; margin: 20px 0 8px; padding: 12px 20px; border-radius: 999px;
  background: var(--purple-dark); color: #ffffff; font-weight: 700; text-decoration: none;
}
.small { font-size: 14px; color: var(--muted); }
footer { border-top: 1px solid var(--line); margin-top: 52px; padding-top: 18px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }
.skip-link { position: absolute; top: -80px; left: 16px; padding: 10px 16px; background: var(--card); z-index: 1; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid var(--purple); outline-offset: 4px; }
.breadcrumbs { margin: 24px 0 0; font-size: 14px; color: var(--muted); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px 10px; list-style: none; padding: 0; margin: 0; }
.breadcrumbs li { margin: 0; font-size: inherit; }
.breadcrumbs li + li::before { content: '/'; margin-right: 10px; color: var(--muted); }
.article-meta { font-size: 14px; color: var(--muted); margin: 16px 0 0; }
.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 22px 0; }
.guide-card { display: block; border: 1px solid var(--line); border-radius: 16px; padding: 22px; background: var(--card); color: var(--text); text-decoration: none; }
.guide-card:hover { border-color: var(--purple); background: var(--tint); }
.guide-card h2, .guide-card h3 { margin: 10px 0 8px; font-size: 20px; line-height: 1.35; }
.guide-card p { margin: 0; color: var(--muted); font-size: 15px; }
.guide-topic { display: inline-block; font-size: 13px; font-weight: 700; color: var(--green); }
.guide-card .guide-read { display: block; color: var(--purple); font-size: 14px; font-weight: 600; margin-top: 16px; }
.guide-toc { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; margin: 24px 0; }
.guide-toc h2 { margin: 0 0 8px; font-size: 17px; }
.guide-toc ul { margin: 0; }
.guide-toc li:last-child { margin-bottom: 0; }
.example { border-left: 3px solid var(--green); padding: 4px 0 4px 18px; margin: 20px 0; }
.example h3 { margin-top: 0; }
.example p:last-child { margin-bottom: 0; }
.guide-sources { border-top: 1px solid var(--line); margin-top: 36px; }
caption { text-align: left; font-weight: 600; margin-bottom: 10px; }
@media (max-width: 540px) {
  .guide-grid { grid-template-columns: 1fr; }
  .guide-card { padding: 18px; }
  h1 { font-size: 29px; }
}
@media print {
  .bar, .skip-link, .guide-toc, .guide-cta, .related-guides, footer { display: none; }
  .wrap { max-width: none; padding: 0; }
  body { color: #000000; background: #ffffff; }
  .table-wrap { overflow: visible; }
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #e9e9ef; --muted: #a8a8b5; --line: #2c2c35; --bg: #17171c; --card: #1f1f26;
    --purple: #a29bfe; --tint: #201d33; --tint-line: #35305c; --green: #2fd9a6;
  }
  .cta { background: #6c5ce7; }
}