/* Shared design system. Each site sets --accent / --accent-ink inline. */
:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --ink: #16191f;
  --ink-2: #4a5160;
  --ink-3: #6b7280;
  --line: #e3e6eb;
  --soft: #f1f3f6;
  --ok: #0f7a4a;
  --ok-bg: #e9f7f0;
  --warn: #9a5b00;
  --warn-bg: #fff6e5;
  --bad: #b42318;
  --bad-bg: #fdecea;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--font); }
img, svg { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* Header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; text-decoration: none; font-size: 18px; }
.logo { display: inline-grid; place-items: center; min-width: 32px; height: 32px; padding: 0 6px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); font-size: 14px; font-weight: 800; }
.main-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.main-nav a { color: var(--ink-2); text-decoration: none; font-size: 15px; padding: 6px 10px; border-radius: 8px; }
.main-nav a:hover, .main-nav a[aria-current] { background: var(--soft); color: var(--ink); }

/* Page */
main { padding: 20px 16px 48px; }
.crumbs { font-size: 14px; color: var(--ink-3); margin: 4px 0 12px; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs a { color: var(--ink-2); }
.crumbs .sep { color: var(--line); }
.page { max-width: 780px; }
.page-wide { max-width: 1080px; }
.page-head { margin-bottom: 20px; }
h1 { font-size: clamp(28px, 4.5vw, 40px); line-height: 1.15; letter-spacing: -.02em; margin: 8px 0 12px; }
h2 { font-size: 24px; line-height: 1.25; letter-spacing: -.01em; margin: 40px 0 12px; }
h3 { font-size: 19px; line-height: 1.3; margin: 28px 0 8px; }
.lede { font-size: 19px; color: var(--ink-2); margin: 0 0 8px; }
.meta { font-size: 14px; color: var(--ink-3); margin: 0; }
p, ul, ol { margin: 0 0 16px; }
li { margin-bottom: 6px; }
strong { font-weight: 650; }
hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }

/* Tool card */
.tool { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin: 8px 0 28px; }
.tool h2 { margin-top: 0; font-size: 21px; }
.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; }
.tool-grid .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field label, .field .label { font-weight: 600; font-size: 15px; }
.field .hint { font-size: 13px; color: var(--ink-3); }
input[type=number], input[type=text], select {
  font: inherit; font-size: 16px; width: 100%; padding: 10px 12px; border: 1px solid #cdd2da; border-radius: 9px; background: #fff; color: var(--ink);
}
input:focus, select:focus { border-color: var(--accent); outline: 3px solid color-mix(in srgb, var(--accent) 22%, transparent); outline-offset: 0; }
.money { position: relative; }
.money::before { content: "$"; position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--ink-3); pointer-events: none; }
.money input { padding-left: 24px; }
.choice { display: flex; flex-wrap: wrap; gap: 8px; }
.choice label { display: flex; align-items: center; gap: 8px; border: 1px solid #cdd2da; border-radius: 9px; padding: 8px 12px; cursor: pointer; font-weight: 500; background: #fff; }
.choice input { accent-color: var(--accent); }
.choice label:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, #fff); }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 500; }
.check input { margin-top: 5px; accent-color: var(--accent); width: 18px; height: 18px; flex: none; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-weight: 650; border: 0; border-radius: 9px; padding: 11px 18px; background: var(--accent); color: var(--accent-ink); cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(1.07); }
.btn-ghost { background: var(--soft); color: var(--ink); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

/* Results */
.result { margin-top: 18px; border-radius: 10px; padding: 16px 18px; background: var(--soft); border: 1px solid var(--line); }
.result[hidden] { display: none; }
.result h3 { margin: 0 0 8px; }
.result.ok { background: var(--ok-bg); border-color: #b8e3cd; }
.result.warn { background: var(--warn-bg); border-color: #f3d9a6; }
.result.bad { background: var(--bad-bg); border-color: #f5c2bd; }
.big { font-size: clamp(28px, 5vw, 38px); font-weight: 750; letter-spacing: -.02em; line-height: 1.15; margin: 2px 0 6px; font-variant-numeric: tabular-nums; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 12px 0; }
.stat { background: rgba(255, 255, 255, .7); border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px; }
.stat .k { font-size: 13px; color: var(--ink-3); }
.stat .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }

/* Callouts */
.callout { border-left: 4px solid var(--accent); background: var(--surface); padding: 14px 16px; border-radius: 0 10px 10px 0; margin: 20px 0; box-shadow: var(--shadow); }
.callout.warn { border-color: #e0a100; }
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }
.keyfacts { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin: 20px 0; }
.keyfact { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.keyfact .v { font-size: 24px; font-weight: 750; color: var(--accent); line-height: 1.2; }
.keyfact .k { font-size: 14px; color: var(--ink-2); }

/* Tables */
.table-wrap { overflow-x: auto; margin: 16px 0 24px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
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 { background: var(--soft); font-weight: 650; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* State grid / link lists */
.state-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px; margin: 12px 0 24px; padding: 0; list-style: none; }
.state-grid li { margin: 0; }
.state-grid a { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 10px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 9px; text-decoration: none; color: var(--ink); font-weight: 550; }
.state-grid a:hover { border-color: var(--accent); }
.badge { display: inline-block; font-size: 12px; font-weight: 650; padding: 2px 8px; border-radius: 999px; background: var(--soft); color: var(--ink-2); white-space: nowrap; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.link-list { padding-left: 20px; }

/* FAQ, sources, disclaimer */
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px; }
.faq summary { cursor: pointer; padding: 12px 16px; font-weight: 650; list-style: none; position: relative; padding-right: 40px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 16px; top: 10px; font-size: 20px; color: var(--ink-3); }
.faq details[open] summary::after { content: "–"; }
.faq-a { padding: 0 16px 12px; color: var(--ink-2); }
.sources ol { font-size: 15px; color: var(--ink-2); padding-left: 22px; }
.sources a { word-break: break-word; }
.disclaimer { margin-top: 32px; font-size: 14px; color: var(--ink-2); background: var(--soft); border-radius: 10px; padding: 12px 16px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); padding: 28px 0; font-size: 15px; color: var(--ink-2); }
.footer-inner nav { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 8px 0; }
.footer-inner nav a { color: var(--ink-2); }
.fine { font-size: 13px; color: var(--ink-3); margin: 8px 0 0; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .tool { padding: 16px; }
  .tool-grid { grid-template-columns: 1fr; }
  .header-inner { padding: 8px 0; }
  .main-nav { width: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .main-nav a { white-space: nowrap; }
  h2 { font-size: 22px; }
}

@media print {
  .site-header, .site-footer, .tool .actions, .disclaimer, .crumbs, .no-print { display: none !important; }
  body { background: #fff; }
}