/* Rudder site: no build step, no web fonts, no scripts. Colors follow the app's classic (mint) theme. */
:root {
  color-scheme: light dark;
  --bg: #f7f8f7;
  --surface: #ffffff;
  --ink: #16191a;
  --ink2: #50585b;
  --ink3: #7a8386;
  --line: #e2e6e5;
  --accent: #0f8a6a;
  --accent-wash: #e3f4ee;
  --code-bg: #eef1f0;
  --todo-bg: #fff1c2;
  --todo-ink: #6b4d00;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1213;
    --surface: #171b1c;
    --ink: #eef1f0;
    --ink2: #a9b2b4;
    --ink3: #7d878a;
    --line: #272d2f;
    --accent: #4fd1a5;
    --accent-wash: #15302a;
    --code-bg: #1f2527;
    --todo-bg: #4a3a0a;
    --todo-ink: #ffe08a;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 var(--sans);
}

.wrap { max-width: 44rem; margin: 0 auto; padding: 0 16px; }

header.top {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
header.top .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; min-height: 56px; column-gap: 12px; padding-top: 6px; padding-bottom: 6px; }
.brand { display: flex; align-items: center; gap: 10px; min-height: 44px; color: var(--ink); text-decoration: none; font: 600 17px/1 var(--mono); }
.brand svg { flex: none; }
nav.top { display: flex; flex-wrap: wrap; gap: 2px; margin: 0 -8px; }
nav.top a { color: var(--ink2); text-decoration: none; font-size: 14px; padding: 12px 8px; border-radius: 8px; white-space: nowrap; }
nav.top a:hover, nav.top a[aria-current="page"] { color: var(--ink); background: var(--accent-wash); }

main { padding: 32px 0 48px; }

h1 { font-size: 28px; line-height: 1.25; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 20px; line-height: 1.35; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 6px; }
p, ul, ol { margin: 0 0 14px; }
ul, ol { padding-left: 1.3em; }
li { margin: 4px 0; }
a { color: var(--accent); text-underline-offset: 2px; }
.meta { color: var(--ink3); font-size: 14px; margin-bottom: 24px; }
.lead { font-size: 18px; color: var(--ink2); }

code { font: 0.92em/1.4 var(--mono); background: var(--code-bg); padding: 2px 5px; border-radius: 5px; overflow-wrap: anywhere; }
pre { background: var(--code-bg); padding: 12px 14px; border-radius: 10px; overflow-x: auto; margin: 0 0 14px; }
pre code { background: none; padding: 0; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; margin: 0 0 14px; }
.card > :last-child { margin-bottom: 0; }

.points { list-style: none; padding: 0; display: grid; gap: 10px; }
.points li { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; margin: 0; }
.points b { display: block; }

table { width: 100%; border-collapse: collapse; margin: 0 0 14px; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--ink2); font-weight: 600; }
.table { overflow-x: auto; }

/* Phone width: each row becomes a card, the column name above each cell. */
@media (max-width: 639px) {
  .table table, .table tbody, .table tr, .table td { display: block; }
  .table tr:first-child { display: none; }
  .table tr { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 6px 4px; margin: 0 0 10px; }
  .table td { border: 0; padding: 6px 12px; }
  .table td[data-label]::before { content: attr(data-label); display: block; color: var(--ink3); font-size: 13px; font-weight: 600; }
}

details { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; margin: 0 0 10px; }
summary { cursor: pointer; padding: 14px 16px; font-weight: 600; min-height: 44px; }
details > div { padding: 0 16px 6px; }

.todo { background: var(--todo-bg); color: var(--todo-ink); padding: 1px 6px; border-radius: 5px; font-weight: 600; }

footer.bottom { border-top: 1px solid var(--line); color: var(--ink3); font-size: 14px; padding: 20px 0 40px; }
footer.bottom a { color: var(--ink2); }
footer.bottom nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }

@media (min-width: 640px) {
  h1 { font-size: 34px; }
  main { padding-top: 48px; }
}