:root {
  --accent: #a03d2d;
  --accent-dark: #6e271c;
  --bg: #f7f5f0;
  --ink: #23211c;
  --muted: #6b665b;
  --card: #ffffff;
  --line: #e3ded2;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.65;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
.site-header {
  background: var(--accent-dark); color: #fff; padding: 14px 0;
  border-bottom: 4px solid var(--accent);
}
.site-header .wrap { display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 8px; }
.brand { color: #fff; text-decoration: none; font-weight: 700; font-size: 1.15rem; }
.topnav a { color: #f2ede1; text-decoration: none; margin-left: 16px; font-size: .95rem; }
.topnav a:hover { text-decoration: underline; }
main { padding: 28px 0 40px; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: .4em 0 .3em; }
h2 { font-size: 1.35rem; margin: 1.6em 0 .5em; color: var(--accent-dark); }
h3 { font-size: 1.1rem; margin: 1.3em 0 .4em; }
.lede { font-size: 1.08rem; color: var(--muted); }
#page-summary {
  background: #fffdf4; border-left: 5px solid var(--accent);
  padding: 14px 18px; margin: 22px 0; border-radius: 0 8px 8px 0;
}
#page-summary p { margin: 0; }
.tool-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 22px; margin: 26px 0; box-shadow: 0 2px 8px rgba(0,0,0,.05);
}
.field { margin: 12px 0; }
.field label { display: block; font-weight: 600; margin-bottom: 4px; }
.field input, .field select {
  width: 100%; padding: 10px; font-size: 1rem; border: 1px solid var(--line);
  border-radius: 6px; background: #fff;
}
.btn {
  background: var(--accent); color: #fff; border: 0; border-radius: 6px;
  padding: 12px 26px; font-size: 1.05rem; font-weight: 700; cursor: pointer;
  margin-top: 8px;
}
.btn:hover { background: var(--accent-dark); }
.result { display: none; margin-top: 18px; border-top: 2px solid var(--line);
  padding-top: 14px; }
.result.show { display: block; }
.result .row { display: flex; justify-content: space-between; gap: 12px;
  padding: 8px 0; border-bottom: 1px solid var(--line); }
.result .big { font-size: 1.5rem; font-weight: 800; color: var(--accent-dark); }
.note { font-size: .92rem; color: var(--muted); }
.disclaimer {
  font-size: .88rem; color: var(--muted); background: #f1ede2;
  border-radius: 6px; padding: 10px 14px; margin-top: 16px;
}
.fresh {
  font-size: .85rem; color: var(--muted); font-style: italic; margin: 6px 0;
}
.guide-list { list-style: none; padding: 0; }
.guide-list li { margin: 10px 0; }
.guide-list a { color: var(--accent-dark); font-weight: 600; text-decoration: none; }
.guide-list a:hover { text-decoration: underline; }
.table-wrap { overflow-x: auto; margin: 14px 0; }
table.rates { border-collapse: collapse; width: 100%; background: #fff; }
table.rates caption { text-align: left; font-weight: 700; padding: 8px 0; }
table.rates th, table.rates td {
  border: 1px solid var(--line); padding: 9px 10px; text-align: left;
  font-size: .94rem; vertical-align: top;
}
table.rates thead th { background: var(--accent-dark); color: #fff; }
.csv-link { font-weight: 600; color: var(--accent-dark); }
.prose p { margin: .9em 0; }
.prose ul { margin: .9em 0; padding-left: 1.4em; }
.site-footer {
  border-top: 3px solid var(--accent); background: #efeadd; padding: 20px 0;
  font-size: .9rem; color: var(--muted);
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 6px 22px;
  align-items: center; }
.site-footer a { color: var(--accent-dark); }
@media (max-width: 600px) {
  h1 { font-size: 1.55rem; }
  .tool-card { padding: 16px; }
}