/* Shared style for the static guide pages in /tools (plain HTML, no Flutter). */
:root {
  --bg: #f6f8fa; --surface: #ffffff; --text: #1d2428; --muted: #57636c;
  --line: #dde3e8; --accent: #0b6bcb; --accent-ink: #ffffff; --code: #eef2f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1d2428; --surface: #252e33; --text: #e8ecef; --muted: #9aa7b0;
    --line: #36434a; --accent: #7cc4ff; --accent-ink: #10202b; --code: #2c373d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.site { border-bottom: 1px solid var(--line); background: var(--surface); }
.site .wrap { display: flex; align-items: center; gap: 10px; padding-top: 10px; padding-bottom: 10px; }
.site a { color: var(--text); text-decoration: none; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.site img { border-radius: 8px; }
.wrap { max-width: 780px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 24px; padding-bottom: 48px; }
.crumbs { font-size: .9rem; color: var(--muted); margin: 0 0 8px; }
.crumbs a { color: var(--muted); }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.3rem; margin: 32px 0 8px; }
h3 { font-size: 1.05rem; margin: 20px 0 6px; }
.lede { font-size: 1.1rem; color: var(--muted); margin-top: 0; }
.formula {
  background: var(--code); border-radius: 8px; padding: 12px 14px; margin: 10px 0;
  font: 600 1rem/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; overflow-x: auto;
}
code { background: var(--code); border-radius: 4px; padding: 1px 5px; font-size: .92em; }
.table-scroll { overflow-x: auto; margin: 10px 0; }
table { border-collapse: collapse; width: 100%; background: var(--surface); font-size: .95rem; }
th, td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; vertical-align: top; }
th { background: var(--code); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.cta {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; margin: 28px 0;
}
.cta p { margin: 0 0 10px; }
.button {
  display: inline-block; background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 8px; font-weight: 600; text-decoration: none; margin: 4px 8px 4px 0;
}
.stores a { margin-right: 14px; }
.note { color: var(--muted); font-size: .92rem; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
footer .wrap { padding-top: 16px; padding-bottom: 32px; }
footer ul { padding-left: 1.1em; margin: 6px 0 12px; }