:root {
  --paper: #fbfbf8;
  --surface: #ffffff;
  --ink: #16243f;
  --muted: #4f5a6e;
  --line: #d9dde3;
  --pine: #22664a;
  --pine-dark: #184d37;
  --pine-tint: #e7f0eb;
  --amber: #8a5a00;
  --amber-tint: #fbf1dc;
  --error: #a12a1f;
  --error-tint: #fbe9e6;
  --seg-core: #16243f;
  --seg-spouse: #5c6f94;
  --seg-transfer: #22664a;
  --seg-additional: #9bbcab;
  --radius-s: 4px;
  --radius-m: 10px;
  --font: "Seravek", "Gill Sans Nova", Ubuntu, Calibri, "DejaVu Sans", source-sans-pro, system-ui, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #10182a;
    --surface: #17213a;
    --ink: #eef1f6;
    --muted: #b4bccb;
    --line: #2f3b57;
    --pine: #6cc39c;
    --pine-dark: #8fd6b4;
    --pine-tint: #1b3a30;
    --amber: #f0c36a;
    --amber-tint: #3a2f17;
    --error: #ff9a8d;
    --error-tint: #3d1f1c;
    --seg-core: #dfe5f0;
    --seg-spouse: #93a5c9;
    --seg-transfer: #6cc39c;
    --seg-additional: #3f7a62;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--pine-dark); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--pine); outline-offset: 2px; border-radius: 2px; }

.skip-link {
  position: absolute; left: 0.75rem; top: -3rem; z-index: 10;
  background: var(--ink); color: var(--paper); padding: 0.5rem 0.9rem; border-radius: var(--radius-s);
}
.skip-link:focus { top: 0.75rem; }

.wrap { width: min(100% - 2.5rem, 70rem); margin-inline: auto; }
.narrow { max-width: 44rem; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 1.5rem; padding-block: 0.9rem; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand svg { width: 34px; height: 34px; flex: none; }
.site-nav ul { display: flex; flex-wrap: wrap; gap: 0.25rem 1.1rem; list-style: none; margin: 0; padding: 0; }
.site-nav a { display: inline-block; padding: 0.55rem 0.1rem; color: var(--ink); text-decoration: none; font-weight: 600; min-height: 44px; line-height: 1.9; }
.site-nav a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--pine); }

/* Typography */
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 0.6em; }
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.1rem); font-weight: 800; }
h2 { font-size: clamp(1.4rem, 1.2rem + 0.9vw, 1.85rem); font-weight: 750; margin-top: 2.2em; }
h3 { font-size: 1.2rem; font-weight: 700; margin-top: 1.6em; }
p, ul, ol { margin: 0 0 1em; max-width: 68ch; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 60ch; }
.small { font-size: 0.92rem; color: var(--muted); }

main { padding-block: 2rem 4rem; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 0.4rem; list-style: none; padding: 0; margin: 0 0 1.4rem; font-size: 0.95rem; color: var(--muted); }
.breadcrumb li + li::before { content: "/"; margin-right: 0.4rem; color: var(--line); }

.notice {
  border-left: 4px solid var(--pine); background: var(--pine-tint);
  padding: 0.85rem 1.1rem; border-radius: 0 var(--radius-s) var(--radius-s) 0; margin: 1.2rem 0; max-width: 68ch;
}
.notice p:last-child { margin-bottom: 0; }
.notice.warn { border-color: var(--amber); background: var(--amber-tint); }
.rules-line { font-size: 0.95rem; color: var(--muted); }

/* Home: the path */
.hero { padding-block: 1.5rem 1rem; }
.hero h1 { max-width: 22ch; }
.path {
  list-style: none; padding: 0; margin: 2.5rem 0 1rem; display: grid; gap: 0; max-width: none;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  border-top: 3px solid var(--ink);
}
.path li { padding: 1.2rem 1.4rem 1.4rem 0; position: relative; }
.path li::before {
  content: ""; position: absolute; top: -0.6rem; left: 0; width: 0.9rem; height: 0.9rem;
  border-radius: 50%; background: var(--paper); border: 3px solid var(--ink);
}
.path h2 { margin-top: 0.4rem; font-size: 1.35rem; }
.path .tool-link { font-weight: 700; }

.compare { width: 100%; border-collapse: collapse; margin: 1rem 0 0; font-size: 0.98rem; }
.table-scroll { overflow-x: auto; max-width: 100%; }
.compare th, .compare td { text-align: left; padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare thead th { border-bottom: 2px solid var(--ink); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  min-height: 44px; padding: 0.6rem 1.2rem; border-radius: var(--radius-s);
  font: inherit; font-weight: 700; cursor: pointer; text-decoration: none;
  border: 2px solid var(--pine); background: var(--pine); color: #fff;
}
@media (prefers-color-scheme: dark) { .btn { color: #0d1a14; } }
.btn:hover { background: var(--pine-dark); border-color: var(--pine-dark); }
.btn.secondary { background: transparent; color: var(--pine-dark); }
.btn.secondary:hover { background: var(--pine-tint); }
.btn.quiet { background: transparent; border-color: var(--line); color: var(--ink); }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

/* Calculator layout */
.calc { display: grid; gap: 2rem; margin-top: 1.5rem; }
@media (min-width: 60rem) { .calc { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); align-items: start; } }
.calc-form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-m); padding: 1.4rem; }
.progress { font-weight: 700; margin: 0 0 1rem; }
.progress-bar { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; margin-bottom: 1.2rem; }
.progress-bar span { display: block; height: 100%; background: var(--pine); width: 0; transition: width 0.25s ease; }
@media (prefers-reduced-motion: reduce) { .progress-bar span { transition: none; } }

fieldset { border: 0; margin: 0 0 1.4rem; padding: 0; min-width: 0; }
legend { font-weight: 700; font-size: 1.05rem; margin-bottom: 0.5rem; padding: 0; }
.step > legend { font-size: 1.35rem; font-weight: 750; margin-bottom: 0.8rem; }
.field { margin-bottom: 1.1rem; }
.field > label, .field .label { display: block; font-weight: 600; margin-bottom: 0.3rem; }
.hint { display: block; font-size: 0.92rem; color: var(--muted); margin-bottom: 0.4rem; max-width: 60ch; }
select, input[type="number"] {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1.5px solid var(--muted); border-radius: var(--radius-s);
  min-height: 44px; padding: 0.45rem 0.6rem; width: 100%; max-width: 26rem;
}
input[type="number"] { max-width: 8rem; }
.choice { display: flex; align-items: flex-start; gap: 0.6rem; margin: 0.35rem 0; min-height: 32px; }
.choice input { width: 1.25rem; height: 1.25rem; margin-top: 0.2rem; accent-color: var(--pine); flex: none; }
.lang-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 0.6rem 1rem; }
.lang-grid select { max-width: none; }
.is-hidden { display: none !important; }
.field-error { color: var(--error); font-weight: 600; font-size: 0.95rem; margin: 0.25rem 0 0; }
[aria-invalid="true"] { border-color: var(--error); }
.error-summary { border: 2px solid var(--error); background: var(--error-tint); padding: 1rem 1.2rem; border-radius: var(--radius-s); margin-bottom: 1.2rem; }
.error-summary h2 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.error-summary ul { margin: 0; }

.review dl { display: grid; grid-template-columns: minmax(8rem, 1fr) 1.5fr; gap: 0.4rem 1rem; margin: 0 0 1rem; }
.review dt { font-weight: 600; }
.review dd { margin: 0; }
.review .missing { color: var(--error); font-weight: 600; }

/* Result panel */
.result { border: 1px solid var(--line); border-radius: var(--radius-m); background: var(--surface); padding: 1.4rem; }
.result h2 { margin-top: 0; font-size: 1.3rem; }
.score { display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap; margin: 0.2rem 0 0.8rem; }
.score strong { font-size: clamp(3rem, 2rem + 4vw, 4.5rem); line-height: 1; font-weight: 800; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.score span { color: var(--muted); font-weight: 600; }
.stale { opacity: 0.55; }
.stale-note { color: var(--amber); font-weight: 700; }

.track { margin: 1rem 0 0.4rem; }
.track-bar { display: flex; height: 18px; border-radius: 9px; overflow: hidden; background: var(--line); }
.track-bar span { display: block; height: 100%; }
.seg-core { background: var(--seg-core); }
.seg-spouse { background: var(--seg-spouse); }
.seg-transfer { background: var(--seg-transfer); }
.seg-additional { background: var(--seg-additional); }
.track-scale { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--muted); margin-top: 0.25rem; font-variant-numeric: tabular-nums; }
.legend { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; list-style: none; padding: 0; margin: 0.6rem 0 1rem; font-size: 0.9rem; }
.legend i { display: inline-block; width: 0.8rem; height: 0.8rem; border-radius: 2px; margin-right: 0.35rem; vertical-align: -0.05rem; }

.breakdown { width: 100%; border-collapse: collapse; font-size: 0.97rem; font-variant-numeric: tabular-nums; }
.breakdown th, .breakdown td { padding: 0.45rem 0.4rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.breakdown td.num, .breakdown th.num { text-align: right; white-space: nowrap; }
.breakdown tr.section th { padding-top: 0.9rem; border-bottom: 2px solid var(--ink); font-size: 1rem; }
.breakdown .why { display: block; color: var(--muted); font-size: 0.88rem; font-weight: 400; }
.delta-up { color: var(--pine-dark); font-weight: 700; }
.delta-down { color: var(--error); font-weight: 700; }

.status { display: inline-block; font-weight: 700; padding: 0.2rem 0.6rem; border-radius: var(--radius-s); margin-bottom: 0.6rem; }
.status.ok { background: var(--pine-tint); color: var(--pine-dark); }
.status.no { background: var(--error-tint); color: var(--error); }
.status.pending { background: var(--amber-tint); color: var(--amber); }
.checklist { list-style: none; padding: 0; margin: 0 0 1rem; }
.checklist li { padding: 0.4rem 0 0.4rem 1.9rem; position: relative; border-bottom: 1px solid var(--line); }
.checklist li::before { position: absolute; left: 0; top: 0.4rem; font-weight: 800; width: 1.4rem; text-align: center; }
.checklist .pass::before { content: "✓"; color: var(--pine-dark); }
.checklist .fail::before { content: "✗"; color: var(--error); }
.checklist .unknown::before { content: "?"; color: var(--amber); }

/* Content below tools */
.content { margin-top: 3rem; }
.faq h3 { margin-top: 1.4rem; }
.sources li { margin-bottom: 0.3rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); padding-block: 2rem; font-size: 0.95rem; }
.site-footer nav ul { display: flex; flex-wrap: wrap; gap: 0.3rem 1.2rem; list-style: none; padding: 0; margin: 0 0 1rem; }
.site-footer a { min-height: 44px; display: inline-block; line-height: 2.6; }
.site-footer p { color: var(--muted); }

@media print {
  .site-header, .site-footer, .calc-form, .actions, .skip-link, .content { display: none !important; }
  .calc { display: block; }
  .result { border: 0; }
}
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.no-js-note { font-weight: 600; }
.js .no-js-note { display: none; }