:root {
    color-scheme: light;
    --paper:  #EFF2F3;
    --card:   #FFFFFF;
    --sunk:   #F6F8F8;
    --ink:    #0E1619;
    --muted:  #5B6C74;
    --rule:   #D6DDE0;
    --rule-2: #B9C4C9;
    --keep:   #0C5A4A;
    --keep-bg:#E4EFEB;
    --gone:   #9C3A20;
    --focus:  #B96A12;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      color-scheme: dark;
      --paper:  #0C1214;
      --card:   #141D20;
      --sunk:   #101819;
      --ink:    #E6EDEF;
      --muted:  #8DA1A8;
      --rule:   #24312F;
      --rule-2: #35443F;
      --keep:   #6FBFA5;
      --keep-bg:#152722;
      --gone:   #E08464;
      --focus:  #E5A24A;
    }
  }
  :root[data-theme="dark"] {
    color-scheme: dark;
    --paper:  #0C1214;
    --card:   #141D20;
    --sunk:   #101819;
    --ink:    #E6EDEF;
    --muted:  #8DA1A8;
    --rule:   #24312F;
    --rule-2: #35443F;
    --keep:   #6FBFA5;
    --keep-bg:#152722;
    --gone:   #E08464;
    --focus:  #E5A24A;
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Public Sans", ui-sans-serif, system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }

  .shell { max-width: 1020px; margin: 0 auto; padding: 32px 20px 80px; }

  /* ── masthead ─────────────────────────────────────────── */
  .masthead { margin-bottom: 26px; }
  .eyebrow {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 12px;
    letter-spacing: .11em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 8px;
  }
  h1 {
    font-family: "Instrument Serif", Georgia, serif;
    font-weight: 400;
    font-size: clamp(34px, 5.5vw, 52px);
    line-height: 1.04;
    letter-spacing: -0.012em;
    margin: 0 0 10px;
    text-wrap: balance;
  }
  h1 em { font-style: italic; color: var(--keep); }
  .standfirst {
    margin: 0;
    max-width: 62ch;
    color: var(--muted);
    font-size: 17px;
  }

  /* ── the working area ─────────────────────────────────── */
  .work {
    display: grid;
    grid-template-columns: minmax(280px, 5fr) 7fr;
    gap: 22px;
    align-items: start;
    margin-top: 28px;
  }
  @media (max-width: 800px) { .work { grid-template-columns: 1fr; } }

  .panel {
    background: var(--card);
    border: 1px solid var(--rule);
    border-radius: 4px;
  }

  form { padding: 20px; display: flex; flex-direction: column; gap: 18px; }

  .field { display: flex; flex-direction: column; gap: 6px; }
  label, legend {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .01em;
  }
  .hint { font-size: 12.5px; color: var(--muted); }

  .money-input { position: relative; display: flex; align-items: center; }
  .money-input span {
    position: absolute; left: 12px;
    font-family: "IBM Plex Mono", monospace;
    color: var(--muted);
    pointer-events: none;
  }
  input[type="number"], select {
    width: 100%;
    font: 500 17px/1 "IBM Plex Mono", ui-monospace, monospace;
    padding: 11px 12px;
    background: var(--sunk);
    color: var(--ink);
    border: 1px solid var(--rule-2);
    border-radius: 3px;
  }
  input[type="number"] { padding-left: 26px; }
  select { font-family: "Public Sans", sans-serif; font-size: 14.5px; }

  fieldset { border: 0; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
  .checks { display: flex; flex-wrap: wrap; gap: 6px; }
  .check {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 13px;
    padding: 6px 10px;
    border: 1px solid var(--rule-2);
    border-radius: 999px;
    cursor: pointer;
    user-select: none;
  }
  .check:has(input:checked) {
    background: var(--keep-bg);
    border-color: var(--keep);
    color: var(--keep);
    font-weight: 600;
  }
  .check input { accent-color: var(--keep); margin: 0; }

  .split { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

  :is(input, select, button, .check):focus-visible,
  .check:has(input:focus-visible) {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
  }

  /* ── the payslip ──────────────────────────────────────── */
  .slip { padding: 0; overflow: hidden; }

  .headline {
    padding: 24px 24px 20px;
    border-bottom: 2px solid var(--ink);
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 4px 18px;
  }
  .headline .big {
    font-family: "Instrument Serif", Georgia, serif;
    font-size: clamp(44px, 9vw, 68px);
    line-height: 0.95;
    letter-spacing: -0.02em;
    color: var(--keep);
    font-variant-numeric: tabular-nums;
  }
  .headline .unit { font-size: 14px; color: var(--muted); }
  .headline .annual {
    margin-left: auto;
    text-align: right;
    font-size: 13.5px;
    color: var(--muted);
    line-height: 1.35;
  }
  .headline .annual b {
    display: block;
    font-family: "IBM Plex Mono", monospace;
    font-size: 17px;
    color: var(--ink);
    font-variant-numeric: tabular-nums;
  }

  table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
  th { text-align: left; font-weight: 600; }
  td, th { padding: 10px 24px; border-bottom: 1px solid var(--rule); }
  td.num, th.num {
    text-align: right;
    font-family: "IBM Plex Mono", monospace;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }
  tr.deduct td.num { color: var(--gone); }
  tr.deduct td.num::before { content: "−"; margin-right: 1px; }
  tr.sub td { color: var(--muted); font-size: 13px; padding-top: 3px; padding-bottom: 3px; border-bottom: 0; }
  tr.sub td:first-child { padding-left: 40px; }
  tr.total td {
    border-top: 2px solid var(--ink);
    border-bottom: 0;
    font-weight: 700;
    font-size: 16px;
    padding-top: 14px;
  }
  tr.total td.num { color: var(--keep); }
  caption {
    caption-side: top;
    text-align: left;
    padding: 14px 24px 4px;
    font-family: "IBM Plex Mono", monospace;
    font-size: 11px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .rates {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-top: 1px solid var(--rule);
  }
  .rates div { padding: 16px 24px; }
  .rates div + div { border-left: 1px solid var(--rule); }
  .rates dt {
    font-size: 12px;
    color: var(--muted);
    margin: 0 0 3px;
  }
  .rates dd {
    margin: 0;
    font-family: "IBM Plex Mono", monospace;
    font-size: 22px;
    font-variant-numeric: tabular-nums;
  }
  .rates .warn { color: var(--gone); }
  .rates small { display: block; font-size: 11.5px; color: var(--muted); margin-top: 4px; line-height: 1.4; font-family: "Public Sans", sans-serif; }

  /* ── prose ────────────────────────────────────────────── */
  article { margin-top: 48px; max-width: 66ch; }
  article h2 {
    font-family: "Instrument Serif", Georgia, serif;
    font-weight: 400;
    font-size: 27px;
    margin: 36px 0 10px;
    letter-spacing: -0.01em;
  }
  article h2:first-child { margin-top: 0; }
  article p { margin: 0 0 14px; }
  article ul { margin: 0 0 14px; padding-left: 20px; }
  article li { margin-bottom: 6px; }
  article strong { font-weight: 600; }
  .figure {
    font-family: "IBM Plex Mono", monospace;
    font-variant-numeric: tabular-nums;
    background: var(--sunk);
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.92em;
  }

  footer {
    margin-top: 56px;
    padding-top: 18px;
    border-top: 1px solid var(--rule);
    font-size: 13px;
    color: var(--muted);
    max-width: 66ch;
  }
  footer a { color: var(--keep); }

  /* ── salary pages ─────────────────────────────────────── */
  .crumb {
    font-family: "IBM Plex Mono", monospace;
    font-size: 12px;
    letter-spacing: .06em;
    color: var(--muted);
    margin: 0 0 14px;
  }
  .crumb a { color: var(--muted); }

  .verdict {
    font-size: 19px;
    line-height: 1.5;
    max-width: 62ch;
    margin: 0 0 6px;
  }
  .verdict b { font-weight: 700; color: var(--keep); }

  .raise {
    margin-top: 30px;
    border: 1px solid var(--rule);
    background: var(--card);
    border-radius: 4px;
    overflow-x: auto;
  }
  .raise table { font-size: 14px; }
  .raise td, .raise th { white-space: nowrap; }
  .raise tr.here { background: var(--keep-bg); }
  .raise tr.here td, .raise tr.here th { font-weight: 700; }
  .raise td.keep { color: var(--keep); }

  .neighbours {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 28px;
    list-style: none;
    padding: 0;
  }
  .neighbours a {
    display: inline-block;
    font-family: "IBM Plex Mono", monospace;
    font-size: 13px;
    padding: 7px 11px;
    border: 1px solid var(--rule-2);
    border-radius: 3px;
    text-decoration: none;
    color: var(--ink);
    background: var(--card);
  }
  .neighbours a:hover { border-color: var(--keep); color: var(--keep); }

  nav.top {
    display: flex;
    gap: 18px;
    align-items: baseline;
    margin-bottom: 22px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--rule);
    font-size: 14px;
  }
  nav.top a { color: var(--muted); text-decoration: none; }
  nav.top a:hover { color: var(--ink); }
  nav.top .brand {
    font-family: "Instrument Serif", Georgia, serif;
    font-size: 20px;
    color: var(--ink);
    margin-right: auto;
  }