/* Belastingcalculator. System font stack (no web fonts, no layout shift), no framework. Mobile first.
   Light and dark: the colours are variables. Dark follows the system, or the toggle (html[data-theme]). */
:root {
  color-scheme: light;
  --bg: #F5F6FA;
  --surface: #FFFFFF;
  --surface-2: #F4F5F9;
  --surface-3: #E9ECF3;
  --ink: #0B1020;
  --ink-2: #454E66;      /* 8.4:1 on white */
  --ink-3: #5B6479;      /* 6.0:1 on white */
  --line: #E3E6EE;
  --line-2: #C9CEDA;
  --field: #858DA2;      /* input borders, 3.3:1 */
  --brand: #4F46E5;      /* buttons (white text 6.3:1) */
  --brand-ink: #4338CA;  /* links (7.6:1) */
  --brand-soft: #EEF0FF;
  --ring: rgba(79, 70, 229, .32);
  --net: #10B981; --net-ink: #047857;
  --tax: #F43F5E; --tax-ink: #BE123C;
  --pension: #F59E0B; --credit: #8B5CF6; --zvw: #EC4899; --free: #0EA5E9; --alt: #64748B;
  --hero: #080C1F;
  --shadow-1: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow-2: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px -6px rgba(16, 24, 40, .10);
  --shadow-3: 0 2px 4px rgba(16, 24, 40, .04), 0 24px 64px -16px rgba(16, 24, 40, .28);
  --r: 12px; --r-lg: 18px; --r-xl: 26px;
  --font: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI Variable", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(.2, .8, .2, 1);
}
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #080B14; --surface: #10152A; --surface-2: #151B33; --surface-3: #1D2441;
  --ink: #EDF0F8; --ink-2: #B6BDD0; --ink-3: #9CA4BA;
  --line: #222A45; --line-2: #343D5E; --field: #6A7393;
  --brand: #5B54F0; --brand-ink: #A9B2FF; --brand-soft: #1B1F49; --ring: rgba(150, 155, 255, .45);
  --net: #34D399; --net-ink: #6EE7B7; --tax: #FB7185; --tax-ink: #FDA4AF;
  --pension: #FBBF24; --credit: #A78BFA; --zvw: #F472B6; --free: #38BDF8; --alt: #94A3B8;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-2: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -8px rgba(0, 0, 0, .55);
  --shadow-3: 0 2px 4px rgba(0, 0, 0, .3), 0 30px 70px -20px rgba(0, 0, 0, .75);
}
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #080B14; --surface: #10152A; --surface-2: #151B33; --surface-3: #1D2441;
    --ink: #EDF0F8; --ink-2: #B6BDD0; --ink-3: #9CA4BA;
    --line: #222A45; --line-2: #343D5E; --field: #6A7393;
    --brand: #5B54F0; --brand-ink: #A9B2FF; --brand-soft: #1B1F49; --ring: rgba(150, 155, 255, .45);
    --net: #34D399; --net-ink: #6EE7B7; --tax: #FB7185; --tax-ink: #FDA4AF;
    --pension: #FBBF24; --credit: #A78BFA; --zvw: #F472B6; --free: #38BDF8; --alt: #94A3B8;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-2: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -8px rgba(0, 0, 0, .55);
    --shadow-3: 0 2px 4px rgba(0, 0, 0, .3), 0 30px 70px -20px rgba(0, 0, 0, .75);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 5rem; }
body { margin: 0; font: 400 1.03rem/1.6 var(--font); color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; font-feature-settings: "cv11", "ss01"; }
img, svg { display: block; max-width: 100%; }
a { color: var(--brand-ink); text-underline-offset: .2em; text-decoration-thickness: 1px; text-decoration-color: color-mix(in srgb, currentColor 45%, transparent); }
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; border-radius: 6px; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 1.35rem + 2.9vw, 3.35rem); font-weight: 780; letter-spacing: -0.035em; }
h2 { font-size: clamp(1.35rem, 1.12rem + .95vw, 1.8rem); font-weight: 740; margin-top: 2.2em; letter-spacing: -0.025em; }
h3 { font-size: 1.1rem; font-weight: 700; margin-top: 1.6em; }
p, ul, ol { margin: 0 0 1em; }
.vh { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.wrap { max-width: 76rem; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 40em) { .wrap { padding: 0 1.5rem; } }
.skip { position: absolute; left: .5rem; top: -4rem; z-index: 30; background: var(--brand); color: #fff; padding: .7rem 1rem; border-radius: var(--r); }
.skip:focus { top: .5rem; }
main:focus { outline: none; }
.ic { width: 20px; height: 20px; flex: none; }
.print-only { display: none; }

/* ---------- Header ---------- */
.site-head { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--surface) 82%, transparent); backdrop-filter: saturate(1.6) blur(14px); -webkit-backdrop-filter: saturate(1.6) blur(14px); border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 0 .75rem; padding-top: .3rem; padding-bottom: .3rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; min-height: 44px; margin-right: auto; color: var(--ink); text-decoration: none; font-weight: 780; font-size: 1.08rem; letter-spacing: -0.025em; }
.brand svg { border-radius: 9px; box-shadow: 0 2px 8px -2px rgba(20, 33, 61, .45); }
.site-nav { order: 3; width: 100%; margin-left: -.55rem; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0 .1rem; }
.site-nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 .65rem; color: var(--ink-2); text-decoration: none; font-weight: 600; font-size: .96rem; border-radius: 10px; transition: background .15s, color .15s; }
.site-nav a:hover { background: var(--surface-2); color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); }
.head-tools { order: 2; display: flex; align-items: center; gap: .4rem; }
@media (min-width: 46em) { .site-nav { order: 2; width: auto; margin: 0 .5rem 0 0; } .head-tools { order: 3; } }
/* Language switcher: a two-part pill, the current language filled. */
.lang { display: inline-flex; align-items: center; padding: 2px; border: 1px solid var(--line-2); border-radius: 999px; font-size: .8rem; font-weight: 760; letter-spacing: .06em; line-height: 1; background: var(--surface); }
.lang-cur, .lang-alt { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 40px; padding: 0 .65rem; border-radius: 999px; }
.lang-cur { background: var(--ink); color: var(--surface); }
.lang-alt { min-height: 44px; margin: -2px -2px -2px 0; color: var(--ink); text-decoration: none; }
.lang-alt:hover { background: var(--surface-2); }
.theme { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; padding: 0; border: 1px solid var(--line-2); border-radius: 999px; background: var(--surface); color: var(--ink); cursor: pointer; transition: background .15s, transform .2s var(--ease); }
.theme:hover { background: var(--surface-2); }
.theme:active { transform: scale(.94); }
.theme[hidden] { display: none; }
.theme .i-sun { display: none; }
html[data-theme="dark"] .theme .i-sun { display: block; }
html[data-theme="dark"] .theme .i-moon { display: none; }
@media (prefers-color-scheme: dark) { html:not([data-theme="light"]) .theme .i-sun { display: block; } html:not([data-theme="light"]) .theme .i-moon { display: none; } }

/* ---------- Hero (dark band on the home page and every calculator) ---------- */
.hero { position: relative; isolation: isolate; overflow: hidden; background: var(--hero); color: #EEF1FA; padding: 0 0 6.5rem; }
.hero-bg { position: absolute; inset: 0; z-index: -1; background:
  radial-gradient(60rem 26rem at 8% -12%, rgba(99, 102, 241, .55), transparent 62%),
  radial-gradient(44rem 22rem at 96% 0%, rgba(16, 185, 129, .30), transparent 60%),
  radial-gradient(40rem 20rem at 60% 120%, rgba(236, 72, 153, .16), transparent 60%); }
.hero-bg::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(ellipse at 30% 0%, #000 20%, transparent 70%); -webkit-mask-image: radial-gradient(ellipse at 30% 0%, #000 20%, transparent 70%); }
.hero .intro { padding-top: 1.4rem; max-width: 76rem; }
.hero-home .intro { padding-top: 2.6rem; }
.hero h1 { color: #fff; max-width: 15em; margin-bottom: .35em; }
.hero .lead { color: #C3C9DD; font-size: clamp(1.05rem, 1rem + .3vw, 1.2rem); max-width: 40em; }
.hero .updated { color: #A9B1C9; }
.hero .updated time { color: #fff; }
.hero a { color: #fff; }
.eyebrow { display: inline-flex; align-items: center; gap: .45rem; margin: 0 0 .9rem; padding: .3rem .75rem .3rem .55rem; border-radius: 999px; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .14); color: #DDE2F2; font-size: .85rem; font-weight: 650; }
.eyebrow .ic { width: 17px; height: 17px; color: #8FE3C3; }
.perks { list-style: none; display: flex; flex-wrap: wrap; gap: .45rem .6rem; margin: 1rem 0 0; padding: 0; }
.perks li { display: inline-flex; align-items: center; gap: .35rem; font-size: .9rem; color: #D3D8E8; }
.perks .ic { width: 16px; height: 16px; color: #34D399; stroke-width: 2.4; }
.hero .crumbs ol { color: #A9B1C9; }
.hero .crumbs a { color: #C9CFE2; }
.hero .crumbs li + li::before { color: #59617C; }

/* Breadcrumbs */
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; margin: 0; padding: .9rem 0 0; font-size: .9rem; color: var(--ink-3); }
.crumbs li + li::before { content: "/"; margin: 0 .5rem; color: var(--line-2); }
.crumbs a { color: var(--ink-2); display: inline-block; padding: .35rem 0; text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

/* Page intro outside the hero */
.lead { font-size: 1.12rem; color: var(--ink-2); max-width: 40em; }
.updated { font-size: .9rem; color: var(--ink-3); margin: 0 0 1em; }
.updated time { font-weight: 650; color: var(--ink); }

/* ---------- Calculator card ---------- */
.calc-band { position: relative; margin-top: -5rem; padding-bottom: 1rem; }
.calc { display: grid; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl); box-shadow: var(--shadow-3); overflow: clip; }
@media (min-width: 60em) {
  .calc { grid-template-columns: minmax(0, 23.5rem) minmax(0, 1fr); align-items: start; }
}
.calc-form { min-width: 0; padding: 1.25rem 1rem 1.5rem; background: var(--surface-2); border-bottom: 1px solid var(--line); }
@media (min-width: 40em) { .calc-form { padding: 1.6rem 1.6rem 1.8rem; } }
@media (min-width: 60em) { .calc-form { border-bottom: 0; border-right: 1px solid var(--line); align-self: stretch; } }
.form-title { font-size: .78rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 .9rem; }
.fgroup { font-size: .95rem; font-weight: 720; margin: 1.6rem 0 .85rem; padding-top: 1.1rem; border-top: 1px solid var(--line); letter-spacing: -0.01em; }
.form-title + .fgroup { margin-top: 0; padding-top: 0; border-top: 0; }
.field { margin: 0 0 1.05rem; padding: 0; border: 0; min-width: 0; }
.field[hidden] { display: none; }
.field > label, .field > legend { display: block; font-weight: 640; font-size: .95rem; margin-bottom: .4rem; padding: 0; }
.help { font-size: .86rem; color: var(--ink-3); margin: .35rem 0 0; line-height: 1.45; }
.err { font-size: .9rem; color: var(--tax-ink); font-weight: 650; margin: .35rem 0 0; }
.affix { display: flex; align-items: stretch; background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--r); box-shadow: var(--shadow-1); transition: border-color .15s, box-shadow .15s; }
.affix:hover { border-color: var(--field); }
.affix:focus-within { border-color: var(--brand); box-shadow: 0 0 0 4px var(--ring); }
.affix span { display: flex; align-items: center; padding: 0 .85rem; color: var(--ink-3); font-weight: 650; }
.affix.pre span { padding-right: 0; }
.affix.post span { padding-left: 0; }
.affix input { flex: 1; min-width: 0; height: 52px; padding: 0 .85rem; border: 0; background: transparent; font: inherit; font-size: 1.25rem; font-weight: 680; letter-spacing: -0.01em; color: var(--ink); font-variant-numeric: tabular-nums; }
.affix input:focus { outline: none; }
.affix:has(input[aria-invalid]) { border-color: var(--tax); box-shadow: 0 0 0 4px color-mix(in srgb, var(--tax) 22%, transparent); }
/* Slider under the amount: the filled part follows --p (set by the build and the browser). */
.range { -webkit-appearance: none; appearance: none; display: block; width: 100%; height: 44px; margin: 0; background: transparent; cursor: pointer; touch-action: pan-y; }
.range::-webkit-slider-runnable-track { height: 6px; border-radius: 99px; background: linear-gradient(90deg, var(--brand) var(--p, 0%), var(--surface-3) var(--p, 0%)); }
.range::-moz-range-track { height: 6px; border-radius: 99px; background: linear-gradient(90deg, var(--brand) var(--p, 0%), var(--surface-3) var(--p, 0%)); }
.range::-webkit-slider-thumb { -webkit-appearance: none; width: 24px; height: 24px; margin-top: -9px; border-radius: 50%; background: #fff; border: 2px solid var(--brand); box-shadow: 0 2px 6px rgba(16, 24, 40, .25); transition: transform .15s var(--ease); }
.range::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: #fff; border: 2px solid var(--brand); box-shadow: 0 2px 6px rgba(16, 24, 40, .25); }
.range:active::-webkit-slider-thumb { transform: scale(1.15); }
.range:focus-visible { outline: none; }
.range:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 5px var(--ring); }
.range:focus-visible::-moz-range-thumb { box-shadow: 0 0 0 5px var(--ring); }
.has-range .help { margin-top: 0; }
select { font: inherit; color: var(--ink); width: 100%; min-height: 50px; padding: 0 2.4rem 0 .85rem; border: 1px solid var(--line-2); border-radius: var(--r); background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%23858DA2' stroke-width='2'/%3E%3C/svg%3E") no-repeat right .9rem center; appearance: none; box-shadow: var(--shadow-1); }
select:focus-visible { outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px var(--ring); }
/* Segmented choice (radio buttons) */
.seg-opts { display: grid; grid-template-columns: repeat(var(--n, 2), minmax(0, 1fr)); gap: 3px; padding: 3px; border-radius: 13px; background: var(--surface-3); }
.seg-opts input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.seg-opts label { display: flex; align-items: center; justify-content: center; text-align: center; min-height: 42px; padding: 0 .6rem; border-radius: 10px; cursor: pointer; font-weight: 640; font-size: .93rem; color: var(--ink-2); line-height: 1.2; transition: background .18s var(--ease), color .18s, box-shadow .18s; }
.seg-opts label:hover { color: var(--ink); }
.seg-opts input:checked + label { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(16, 24, 40, .1), 0 2px 8px -2px rgba(16, 24, 40, .12); }
.seg-opts input:focus-visible + label { outline: 3px solid var(--brand); outline-offset: 0; }
/* Toggle (checkbox with role switch) */
.toggle { display: grid; grid-template-columns: auto 1fr; column-gap: .75rem; align-items: center; margin-bottom: .55rem; }
.toggle .help { grid-column: 2; margin-top: -.15rem; margin-bottom: .2rem; }
.toggle > label { margin: 0; min-height: 44px; display: flex; align-items: center; cursor: pointer; font-weight: 600; font-size: .95rem; line-height: 1.3; }
.toggle input { appearance: none; -webkit-appearance: none; margin: 0; width: 44px; height: 26px; border-radius: 13px; background: var(--field); position: relative; cursor: pointer; flex: none; transition: background .2s var(--ease); }
.toggle input::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, .25); transition: transform .22s var(--ease); }
.toggle input:checked { background: var(--brand); }
.toggle input:checked::after { transform: translateX(18px); }
.toggle input:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }
.field.info { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem .6rem; margin-top: 1.2rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.info-l { font-weight: 640; font-size: .95rem; }
.chip { display: inline-flex; align-items: center; height: 28px; padding: 0 .65rem; border-radius: 99px; background: var(--brand-soft); color: var(--brand-ink); font-weight: 720; font-size: .88rem; font-variant-numeric: tabular-nums; }
.field.info .help { width: 100%; margin: 0; }

/* ---------- Result ---------- */
.result { min-width: 0; padding: 1.3rem 1rem 1.5rem; }
@media (min-width: 40em) { .result { padding: 1.7rem 2rem 2rem; } }
.r-top { display: flex; justify-content: space-between; align-items: center; gap: .5rem; margin-bottom: .6rem; }
.r-title { font-size: .78rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin: 0; }
.live-dot { display: inline-flex; align-items: center; gap: .45rem; font-size: .78rem; font-weight: 650; color: var(--ink-3); white-space: nowrap; }
.live-dot::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--net); box-shadow: 0 0 0 0 color-mix(in srgb, var(--net) 60%, transparent); animation: pulse 2.4s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--net) 55%, transparent); } 70%, 100% { box-shadow: 0 0 0 8px transparent; } }
.r-label { font-weight: 650; margin: 0; font-size: 1rem; color: var(--ink-2); }
.r-value { position: relative; margin: .05rem 0 .45rem; font-size: clamp(2.9rem, 2.1rem + 4.2vw, 4.6rem); font-weight: 780; letter-spacing: -0.045em; line-height: 1.02; font-variant-numeric: tabular-nums; white-space: nowrap; color: var(--ink); }
.r-value[data-anim] { color: transparent; }
.r-value[data-anim]::after { content: attr(data-anim); position: absolute; left: 0; top: 0; color: var(--ink); }
.r-sub { margin: 0 0 .2rem; color: var(--ink-2); font-size: .97rem; }
.r-head { padding-bottom: 1.1rem; }
/* Stacked bars */
.r-viz:empty { display: none; }
.vbar { margin: 0 0 1.1rem; }
.vbar-cap { display: flex; justify-content: space-between; gap: 1rem; margin: 0 0 .45rem; font-size: .86rem; font-weight: 650; color: var(--ink-2); }
.vbar-t { font-variant-numeric: tabular-nums; color: var(--ink); }
.bar { display: flex; gap: 3px; height: 14px; border-radius: 99px; overflow: hidden; background: var(--surface-3); }
.bs { flex: 0 0 var(--w); min-width: 3px; border-radius: 3px; transition: flex-basis .65s var(--ease); }
.bs:first-child { border-radius: 99px 3px 3px 99px; }
.bs:last-child { border-radius: 3px 99px 99px 3px; }
.bs:only-child { border-radius: 99px; }
.k-net { background: var(--net); } .k-tax { background: var(--tax); } .k-pension { background: var(--pension); } .k-credit { background: var(--credit); }
.k-zvw { background: var(--zvw); } .k-free { background: var(--free); } .k-alt { background: var(--alt); }
.legend { list-style: none; display: flex; flex-wrap: wrap; gap: .3rem 1.1rem; margin: .55rem 0 0; padding: 0; font-size: .88rem; }
.legend li { display: inline-flex; align-items: baseline; gap: .4rem; }
.sw { display: inline-block; width: 10px; height: 10px; border-radius: 3px; flex: none; transform: translateY(1px); }
.lg-l { color: var(--ink-2); }
.lg-v { font-weight: 700; font-variant-numeric: tabular-nums; }
.lg-p { color: var(--ink-3); font-variant-numeric: tabular-nums; font-size: .82rem; }
/* Rate tiles */
.stats { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: .5rem; margin: 1.2rem 0 0; }
@media (max-width: 30em) { .stat { padding: .7rem .7rem .75rem; } .stat dd { font-size: 1.2rem; } .stat dd.stat-n { display: none; } }
.stat { margin: 0; padding: .8rem .9rem .85rem; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--line); }
.stat dt { font-size: .8rem; font-weight: 650; color: var(--ink-3); line-height: 1.3; }
.stat dd { margin: .2rem 0 0; font-size: 1.45rem; font-weight: 760; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; line-height: 1.15; }
.stat dd.stat-n { font-size: .78rem; font-weight: 500; color: var(--ink-3); letter-spacing: 0; margin-top: .25rem; line-height: 1.35; }
/* Actions */
.r-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.3rem 0 .2rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 44px; padding: 0 1.05rem; border-radius: 11px; border: 1px solid transparent; background: var(--brand); color: #fff; font: inherit; font-size: .95rem; font-weight: 680; text-decoration: none; cursor: pointer; box-shadow: 0 1px 2px rgba(16, 24, 40, .12), inset 0 1px 0 rgba(255, 255, 255, .14); transition: transform .15s var(--ease), background .15s, box-shadow .15s; }
.btn:hover { background: color-mix(in srgb, var(--brand) 88%, #000); color: #fff; }
.btn:active { transform: translateY(1px) scale(.98); }
.btn .ic { width: 18px; height: 18px; }
.btn.ghost { background: var(--surface); color: var(--ink); border-color: var(--line-2); box-shadow: var(--shadow-1); }
.btn.ghost:hover { background: var(--surface-2); }
.btn.done { background: var(--net-ink); color: #fff; border-color: transparent; }
.btn[hidden] { display: none; }
/* Chart */
.r-chart:empty { display: none; }
.chart { margin: 1.6rem 0 0; padding: 1rem 1rem .6rem; border: 1px solid var(--line); border-radius: var(--r-lg); background: linear-gradient(180deg, var(--surface-2), var(--surface) 70%); }
.chart-cap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .3rem 1rem; margin-bottom: .8rem; }
.chart-t { font-weight: 700; font-size: .95rem; }
.chart-legend { list-style: none; display: flex; flex-wrap: wrap; gap: .2rem .9rem; margin: 0; padding: 0; font-size: .8rem; color: var(--ink-2); }
.chart-legend li { display: inline-flex; align-items: center; gap: .35rem; }
.chart-legend .sw { width: 14px; height: 3px; border-radius: 2px; transform: none; }
.ln-net { background: var(--net); } .ln-alt { background: var(--alt); } .ln-diag { background: var(--ink-3); }
.sw.dash { background: repeating-linear-gradient(90deg, var(--alt) 0 4px, transparent 4px 7px); }
.sw.k-gap { height: 10px; width: 10px; border-radius: 3px; background: color-mix(in srgb, var(--tax) 30%, transparent); }
.chart-plot { position: relative; height: 210px; margin-left: 2.6rem; }
@media (min-width: 40em) { .chart-plot { height: 240px; margin-left: 3rem; } }
.chart-plot svg { width: 100%; height: 100%; overflow: visible; }
.chart-plot path { vector-effect: non-scaling-stroke; fill: none; }
.chart-plot .gl { stroke: var(--line); stroke-width: 1; }
.chart-plot .gap { fill: color-mix(in srgb, var(--tax) 14%, transparent); }
.chart-plot .area { fill: color-mix(in srgb, var(--net) 16%, transparent); background: none; }
.chart-plot .diag { stroke: var(--ink-3); stroke-width: 1.5; stroke-dasharray: 2 4; }
.chart-plot .ln { stroke-width: 2.75; stroke-linejoin: round; stroke-linecap: round; background: none; }
.chart-plot .ln-net { stroke: var(--net); }
.chart-plot .ln-alt { stroke: var(--alt); }
.chart-plot .ln.dash { stroke-dasharray: 6 5; stroke-width: 2; }
.chart-plot .mk-line { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 3 3; opacity: .45; }
.ylab { position: absolute; right: 100%; margin-right: .45rem; transform: translateY(-50%); font-size: .72rem; color: var(--ink-3); white-space: nowrap; font-variant-numeric: tabular-nums; }
.mk-dot { position: absolute; width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%; background: var(--surface); border: 3px solid var(--net); box-shadow: 0 0 0 5px color-mix(in srgb, var(--net) 22%, transparent); transition: left .5s var(--ease), top .5s var(--ease); }
.mk-tip { position: absolute; left: var(--x); transform: translate(calc(var(--x) * -1), calc(-100% - 14px)); padding: .28rem .6rem; border-radius: 8px; background: var(--ink); color: var(--surface); font-size: .8rem; font-weight: 700; white-space: nowrap; font-variant-numeric: tabular-nums; box-shadow: var(--shadow-2); pointer-events: none; }
.chart-x { position: relative; height: 1.4rem; margin: .35rem 0 0 2.6rem; font-size: .72rem; color: var(--ink-3); font-variant-numeric: tabular-nums; }
@media (min-width: 40em) { .chart-x { margin-left: 3rem; } }
.chart-x span { position: absolute; top: 0; transform: translateX(-50%); white-space: nowrap; }
.chart-x span:first-child { transform: none; }
.chart-x span:last-child { transform: translateX(-100%); }
.chart-xl { margin: 0 0 0 2.6rem; font-size: .78rem; color: var(--ink-3); text-align: center; }
/* Ledger */
.r-h { font-size: .95rem; font-weight: 720; margin: 1.8rem 0 .6rem; }
.ledger { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; margin: 0 0 .5rem; font-size: .97rem; }
.ledger th, .ledger td { padding: .5rem 0; vertical-align: baseline; text-align: left; font-weight: 400; border-bottom: 1px solid var(--line); }
.ledger tbody th { padding-right: .75rem; }
.ledger .ln { display: block; font-size: .82rem; color: var(--ink-3); line-height: 1.35; }
.ledger .op { width: 1.4rem; text-align: center; color: var(--ink-3); font-weight: 600; }
.ledger .amt { text-align: right; white-space: nowrap; width: 1%; padding-left: .25rem; }
.ledger .lh th { font-weight: 720; font-size: .78rem; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3); padding-top: 1.1rem; border-bottom: 0; }
.ledger .lh:first-child th { padding-top: 0; }
.ledger .sub th, .ledger .sub .amt { font-weight: 680; }
.ledger .sub { background: linear-gradient(90deg, transparent, var(--surface-2) 30%); }
.ledger .total th, .ledger .total td { border-bottom: 0; padding-top: .7rem; }
.ledger .total th, .ledger .total .amt { font-weight: 780; font-size: 1.1rem; }
.ledger .total .amt { color: var(--net-ink); }
.ledger .total { border-top: 2px solid var(--ink); }
.ledger .muted th, .ledger .muted .amt { color: var(--ink-3); }
.tag { display: inline-block; font-size: .72rem; font-weight: 720; line-height: 1.3; padding: .08rem .45rem; border-radius: 99px; background: color-mix(in srgb, var(--pension) 18%, transparent); color: color-mix(in srgb, var(--pension) 40%, var(--ink)); vertical-align: .12em; white-space: nowrap; letter-spacing: .01em; }
.rnote, .rnotes { font-size: .9rem; color: var(--ink-2); }
.rnotes { padding-left: 1.1rem; margin-top: 1rem; }
.rnotes li { margin-bottom: .3rem; }
.r-src { font-size: .82rem; color: var(--ink-3); margin: 1.4rem 0 0; padding-top: 1rem; border-top: 1px solid var(--line); }
.periods { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: .92rem; }
.periods th, .periods td { padding: .45rem .5rem; text-align: right; border-bottom: 1px solid var(--line); white-space: nowrap; }
.periods th:first-child { text-align: left; padding-left: 0; }
.periods thead th { font-size: .75rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; }
.periods tbody th { font-weight: 640; }
.periods td:last-child { font-weight: 720; color: var(--net-ink); padding-right: 0; }
@media (max-width: 30em) { .periods { font-size: .84rem; } .periods th, .periods td { padding: .45rem .25rem; } .periods thead th { font-size: .68rem; letter-spacing: .03em; } }
.check { margin-top: 1rem; padding: .8rem 1rem; border-radius: var(--r); border: 1px solid; }
.check p { margin: 0; }
.check.ok { border-color: color-mix(in srgb, var(--net) 50%, transparent); background: color-mix(in srgb, var(--net) 10%, transparent); }
.check.no { border-color: color-mix(in srgb, var(--tax) 50%, transparent); background: color-mix(in srgb, var(--tax) 9%, transparent); }

/* Result bar (added by client.js on small screens): the live main figure while you edit the form and the result card is
   off screen. It sits above the safe area and, with --kb, above an on-screen keyboard. While it shows, html.peek-on
   keeps focused fields clear of it. */
.peek { position: fixed; left: calc(.5rem + env(safe-area-inset-left, 0px)); right: calc(.5rem + env(safe-area-inset-right, 0px)); bottom: calc(.5rem + env(safe-area-inset-bottom, 0px)); z-index: 25; display: flex; align-items: center; gap: .75rem; min-height: 56px; padding: .55rem .8rem .55rem 1rem; background: color-mix(in srgb, #0B1020 93%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); color: #fff; text-decoration: none; font-variant-numeric: tabular-nums; border: 1px solid rgba(255, 255, 255, .12); border-radius: 16px; box-shadow: 0 12px 40px -8px rgba(0, 0, 0, .5); transform: translateY(calc(-1 * var(--kb, 0px))); animation: rise .3s var(--ease); }
.peek[hidden] { display: none; }
.peek-l { flex: 1; min-width: 0; color: #C3C9DD; font-size: .9rem; line-height: 1.25; }
.peek-v { font-size: 1.35rem; font-weight: 780; letter-spacing: -0.02em; color: #6EE7B7; white-space: nowrap; }
.peek-go { flex: none; width: 32px; height: 32px; padding: 6px; border-radius: 50%; background: rgba(255, 255, 255, .1); color: #fff; }
.peek:focus-visible { outline: 3px solid #A9B2FF; outline-offset: 2px; }
@keyframes rise { from { transform: translateY(20px); opacity: 0; } }
@media (min-width: 60em) { .peek { display: none !important; } }
@media (max-width: 59.99em) { html.peek-on { scroll-padding-bottom: 6.5rem; } }

/* ---------- Compare ---------- */
.cmp { margin: 1.5rem 0 0; }
.cmp-top { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .2rem 1.5rem; margin-bottom: .9rem; }
.cmp-top h2 { margin: 0; }
.fold > summary.cmp-top { display: flex; }
.cmp-top p, .cmp-sub { margin: 0; color: var(--ink-3); font-size: .95rem; }
.cmp-grid { display: grid; gap: 1rem; }
@media (min-width: 48em) { .cmp-grid.n3, .cmp-grid.n2 { grid-template-columns: 1fr 1fr; } .cmp-grid.n3 > .cmp-vs { grid-column: 1 / -1; } }
.card { min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 1.15rem 1.15rem 1.2rem; box-shadow: var(--shadow-2); }
.cmp-card h3 { margin: 0 0 .8rem; font-size: 1.05rem; }
.vs3 { list-style: none; display: grid; gap: .55rem; margin: 0 0 .8rem; padding: 0; }
@media (min-width: 34em) { .vs3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.vs { position: relative; display: flex; flex-direction: column; gap: .15rem; padding: .8rem .85rem; border-radius: 14px; background: var(--surface-2); border: 1px solid var(--line); }
.vs.best { border-color: color-mix(in srgb, var(--net) 55%, transparent); background: color-mix(in srgb, var(--net) 8%, var(--surface)); }
.vs-k { font-size: .82rem; font-weight: 700; color: var(--ink-2); }
.vs-v { font-size: 1.35rem; font-weight: 780; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.vs.na .vs-v { font-size: 1rem; color: var(--ink-3); font-weight: 680; letter-spacing: 0; }
.vs-s { font-size: .78rem; color: var(--ink-3); line-height: 1.35; }
.badge { align-self: flex-start; margin-top: .35rem; padding: .1rem .5rem; border-radius: 99px; background: var(--net-ink); color: #fff; font-size: .72rem; font-weight: 720; }
.vs-diff { font-size: .95rem; }
.caveats { padding-left: 1.1rem; font-size: .9rem; color: var(--ink-2); }
.caveats li { margin-bottom: .3rem; }
.wi { margin-top: .4rem; }
.wi-v { margin: 0; font-size: 1rem; color: var(--ink-2); }
.wi-v strong { font-size: 2rem; font-weight: 780; letter-spacing: -0.035em; color: var(--net-ink); font-variant-numeric: tabular-nums; }
.btn-row { display: flex; flex-wrap: wrap; gap: .5rem; margin: .4rem 0 .8rem; }
.scn { width: 100%; border-collapse: collapse; font-size: .88rem; font-variant-numeric: tabular-nums; }
.scn th, .scn td { padding: .42rem .4rem; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; vertical-align: baseline; }
.scn th:first-child { text-align: left; white-space: normal; padding-left: 0; font-weight: 560; }
.scn thead th { font-size: .75rem; letter-spacing: .06em; color: var(--ink-3); font-weight: 720; }
.scn .total th, .scn .total td { font-weight: 760; }
.scn .ln { display: block; font-size: .75rem; color: var(--ink-3); font-weight: 500; }
.scn .up, .scn .down { color: var(--ink); font-weight: 700; } .scn .up::before { content: "▲ "; font-size: .7em; color: var(--ink-3); } .scn .down::before { content: "▼ "; font-size: .7em; color: var(--ink-3); } .scn .d0 { color: var(--ink-3); }

/* ---------- Content ---------- */
.content { padding-top: 2rem; padding-bottom: 3.5rem; }
.content > section, .content > aside { max-width: 48rem; }
.content.wide > section, .content.wide > aside { max-width: none; }
.prose { max-width: 48rem; }
.prose > h1, .page-head h1 { margin-top: 1.2rem; }
.page-head { max-width: 48rem; margin-bottom: 1.5rem; }
.md h2 { margin-top: 1.9em; }
.md h2, .prose h2 { padding-top: .2em; }
.md li { margin-bottom: .35rem; }
.md blockquote { margin: 1.4em 0; padding: .8em 1.1em; border-left: 3px solid var(--brand); background: var(--brand-soft); border-radius: 0 var(--r) var(--r) 0; color: var(--ink-2); }
.md blockquote p:last-child { margin: 0; }
.md pre { overflow-x: auto; background: var(--surface-2); padding: .8rem 1rem; border-radius: var(--r); border: 1px solid var(--line); }
code { font-size: .9em; background: var(--surface-3); padding: .08em .35em; border-radius: 5px; }
.md .cta { margin: 1.4rem 0; }
.disclaimer { display: flex; gap: .85rem; margin: 2rem 0 0; padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); box-shadow: var(--shadow-1); }
.disclaimer .d-ic { width: 22px; height: 22px; color: var(--brand-ink); margin-top: .1rem; }
.disclaimer p { margin: 0 0 .3rem; }
.disclaimer p:last-child { margin: 0; color: var(--ink-3); font-size: .92rem; }
.how .links { list-style: none; padding: 0; display: grid; gap: .1rem; }
.how .links a { display: inline-block; padding: .3rem 0; font-weight: 600; }
.how .links li::before { content: "→"; color: var(--ink-3); margin-right: .5rem; }
.faq h3 { margin: 1.5em 0 .35em; font-size: 1.05rem; }
.faq p { color: var(--ink-2); }
.more a { font-weight: 650; display: inline-block; padding: .4rem 0; }
.src { font-size: .86rem; color: var(--ink-3); }
.toc ul { padding-left: 1.1rem; }
.toc a { display: inline-block; padding: .2rem 0; }
.sources li { margin-bottom: .7rem; overflow-wrap: anywhere; }
details { margin: 1rem 0; }
summary { cursor: pointer; font-weight: 650; min-height: 44px; display: flex; align-items: center; color: var(--brand-ink); }
.sec { margin-top: 3rem; }
.sec-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: .2rem 1rem; margin-bottom: 1rem; }
.sec-top h2 { margin: 0; }
.sec-top .more { margin: 0; }
.content > section:first-child, .content > .sec:first-child { margin-top: 1.5rem; }

/* Tables in guides and on the method page */
.table-wrap { overflow-x: auto; margin: 0 0 1.2rem; -webkit-overflow-scrolling: touch; }
.table-wrap table:not(.ledger):not(.periods):not(.scn) { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; font-size: .95rem; }
.table-wrap table:not(.periods):not(.scn) th, .table-wrap table:not(.periods):not(.scn) td { text-align: left; padding: .6rem .75rem .6rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap table:not(.periods):not(.scn) thead th { border-bottom: 1.5px solid var(--ink); font-weight: 700; }
.table-wrap tbody th { font-weight: 600; }
.table-wrap .right, .table-wrap .amt { text-align: right; }
.table-wrap .center { text-align: center; }
.params td:last-child { white-space: normal; }

/* Calculator index: cards with an icon and a real example figure */
.calc-index { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; }
@media (min-width: 40em) { .calc-index { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 64em) { .calc-index:not(.compact) { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.calc-index a { position: relative; display: grid; grid-template-columns: auto 1fr; column-gap: .85rem; row-gap: .15rem; align-items: start; height: 100%; padding: 1.05rem 2.6rem 1.1rem 1rem; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-1); color: var(--ink); text-decoration: none; transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s; }
.calc-index a:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); border-color: var(--line-2); }
.ci-ic { grid-row: span 3; display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: var(--brand-soft); color: var(--brand-ink); }
.calc-index strong { font-size: 1.04rem; font-weight: 720; letter-spacing: -0.01em; line-height: 1.3; }
.ci-s { color: var(--ink-2); font-size: .92rem; line-height: 1.45; }
.calc-index .ex { margin-top: .35rem; justify-self: start; padding: .15rem .55rem; border-radius: 99px; background: color-mix(in srgb, var(--net) 12%, transparent); color: var(--net-ink); font-variant-numeric: tabular-nums; font-weight: 680; font-size: .82rem; }
.ci-go { position: absolute; right: 1rem; top: 1.2rem; width: 18px; height: 18px; color: var(--ink-3); transition: transform .2s var(--ease), color .2s; }
.calc-index a:hover .ci-go { transform: translateX(3px); color: var(--brand-ink); }
.guides { list-style: none; padding: 0; margin: 0; }
.guides li { padding: .9rem 0; border-bottom: 1px solid var(--line); }
.guides a { font-weight: 700; font-size: 1.08rem; display: inline-block; padding: .15rem 0; text-decoration: none; color: var(--ink); }
.guides a:hover { color: var(--brand-ink); text-decoration: underline; }
.guides p { margin: .2rem 0 0; color: var(--ink-2); font-size: .95rem; }
.guides.cards { display: grid; gap: .8rem; }
@media (min-width: 40em) { .guides.cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.guides.cards li { padding: 1.1rem 1.15rem; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); box-shadow: var(--shadow-1); }
.guides.cards .updated { margin: .5rem 0 0; font-size: .8rem; }
.trust { display: flex; gap: 1rem; padding: 1.4rem 1.3rem; border-radius: var(--r-lg); background: linear-gradient(135deg, var(--brand-soft), var(--surface)); border: 1px solid var(--line); }
.trust h2 { margin-top: 0; font-size: 1.3rem; }
.trust-ic { width: 34px; height: 34px; color: var(--brand-ink); }
.trust p:last-child { margin: 0; }

/* Affiliate slot */
.aff { margin: 2rem 0 0; padding: 1.1rem 1.15rem 1.2rem; border: 1px dashed var(--line-2); border-radius: var(--r-lg); background: var(--surface); }
.aff-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: .2rem 1rem; }
.aff h2 { margin: 0 0 .3rem; font-size: 1.2rem; }
.aff h3 { font-size: 1rem; margin: 1rem 0 .4rem; }
.aff-note { font-size: .82rem; font-weight: 700; color: var(--ink-3); margin: 0 0 .5rem; }
.aff-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
@media (min-width: 36em) { .aff-list { grid-template-columns: 1fr 1fr; } }
.aff-list a { display: grid; gap: .1rem; min-height: 44px; padding: .65rem .8rem; border: 1px solid var(--line); border-radius: var(--r); text-decoration: none; color: var(--ink); background: var(--surface-2); transition: border-color .15s; }
.aff-list a:hover { border-color: var(--brand); }
.aff-list strong { color: var(--brand-ink); }
.aff-list span { font-size: .88rem; color: var(--ink-2); }
.aff-home { margin: 1.5rem 0 0; padding: .9rem 1rem 1rem; border: 1px solid var(--line-2); border-left: 3px solid var(--brand); background: var(--surface); box-shadow: var(--shadow-1); }
.aff-home h2 { font-size: 1.05rem; }
.aff-home > p { margin: 0 0 .2rem; font-size: .9rem; color: var(--ink-2); }
.aff-home h3 { margin: .7rem 0 .35rem; font-size: .78rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-3); }
.aff-home .aff-list { gap: .4rem; }
.aff-home .aff-list a { padding: .5rem .7rem; }
.aff-home .aff-list span { font-size: .82rem; }
@media (min-width: 52em) { .aff-home .aff-list { grid-template-columns: repeat(4, 1fr); } }

/* Info blocks (toeslagen) */
.info h3 { display: flex; flex-wrap: wrap; gap: .4rem; align-items: baseline; }

/* ---------- Footer ---------- */
.site-foot { background: var(--hero); color: #C9CFE0; padding: 2.8rem 0 2.2rem; margin-top: 2rem; }
.site-foot a { color: #EEF1FA; text-decoration-color: rgba(255, 255, 255, .3); }
.site-foot a:hover { text-decoration-color: #fff; }
.site-foot :focus-visible { outline-color: #A9B2FF; }
.site-foot .brand { color: #fff; margin: 0; }
.foot-brand { margin-bottom: 1.6rem; }
.foot-brand p { margin: .3rem 0 0; font-size: .92rem; color: #A9B1C9; }
.site-foot h2 { font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 .6rem; color: #8E97B3; }
.foot-cols { display: grid; gap: 1.6rem; }
@media (min-width: 46em) { .foot-cols { grid-template-columns: repeat(3, 1fr); } }
.foot-cols ul { list-style: none; margin: 0; padding: 0; }
.foot-cols a { display: inline-block; padding: .4rem 0; font-size: .95rem; }
.foot-note { margin: 2rem 0 0; padding-top: 1.3rem; border-top: 1px solid rgba(255, 255, 255, .1); font-size: .86rem; color: #A9B1C9; max-width: 48rem; }

/* Checklists in guides ("- [ ] item") */
.md ul.tasks { list-style: none; padding-left: 0; }
.md ul.tasks li { position: relative; padding-left: 2rem; margin-bottom: .55rem; }
.md ul.tasks .box { position: absolute; left: 0; top: .22em; width: 1.15rem; height: 1.15rem; border: 2px solid var(--field); border-radius: 5px; background: var(--surface); }
.md ul.tasks .box.done { background: var(--net-ink); border-color: var(--net-ink); }
.prose a, .r-src a, .src a { overflow-wrap: anywhere; }
.md .table-wrap, .prose .table-wrap { border: 1px solid var(--line); border-radius: var(--r); padding: 0 .9rem; background: var(--surface); }

/* ---------- Folds: collapsible sections (details[data-fold], see fold() in site/calcs.mjs) ----------
   Wider screens: always open; the summary is just the heading it holds (client.js blocks the toggle there).
   Small screens (the same query as FOLD_JS in build.mjs and SMALL in client.js): closed on load, the summary is a
   tappable bar with a chevron. .fold-card: a section of the page. .r-fold: inside the result card. .fold-show: a "show the
   list" bar under a heading row. .foot-fold: a footer column. */
.fold { margin: 0; }
.fold > summary { display: block; min-height: 0; list-style: none; color: inherit; font-weight: inherit; cursor: auto; }
.fold > summary::-webkit-details-marker { display: none; }
.fold-i, .fold-show > summary { display: none; }
.fold-c { width: 18px; height: 18px; }
@media (max-width: 47.5em) {
  .fold > summary { cursor: pointer; -webkit-tap-highlight-color: transparent; }
  .fold > summary :is(h2, h3) { display: flex; align-items: center; justify-content: space-between; gap: .75rem; min-height: 44px; margin: 0; }
  .fold-i { display: grid; place-items: center; flex: none; width: 32px; height: 32px; border-radius: 50%; background: var(--surface-2); color: var(--ink-2); transition: transform .25s var(--ease), background .15s; }
  .fold[open] > summary .fold-i, .fold-show[open] > summary .fold-c { transform: rotate(180deg); }
  .fold > summary:hover .fold-i { background: var(--surface-3); }
  .fold > summary:focus-visible { outline-offset: 2px; }
  /* A section of the page: a card bar; the content opens under it. */
  .fold-card > summary { padding: .45rem .6rem .45rem 1rem; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); box-shadow: var(--shadow-1); }
  .fold-card > summary h2 { font-size: 1.15rem; }
  .fold-card[open] > summary { margin-bottom: 1rem; }
  .content > .how, .content > .faq, .content > .info, .content > .aff, .content > .others, .content > .disclaimer { margin-top: 1rem; }
  .content > .how h2, .content > .faq h2, .content > .info h2 { margin-top: 0; }
  .faq .fold > h3:first-of-type, .how .fold > summary + * { margin-top: 0; }
  .cmp { margin-top: 1rem; }
  .fold > summary.cmp-top { display: block; }
  .cmp-sub { display: block; margin: -.15rem 2.6rem .3rem 0; font-size: .86rem; line-height: 1.4; }
  /* Inside the result card: a row between two lines. */
  .r-fold > summary { margin-top: 1.1rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: .3rem 0; }
  .r-fold + .r-fold > summary { margin-top: -1px; }
  .r-fold[open] > summary { margin-bottom: .7rem; }
  .r-fold > summary .r-h { font-size: 1rem; }
  /* "Show the list" bar under a heading row that keeps its own link. */
  .fold-show > summary { display: flex; align-items: center; justify-content: space-between; gap: .75rem; min-height: 48px; padding: 0 1rem; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); box-shadow: var(--shadow-1); font-weight: 680; color: var(--ink); }
  .fold-show > summary .fold-c { color: var(--ink-2); transition: transform .25s var(--ease); }
  .fold-show[open] > summary { margin-bottom: .8rem; }
  .sec { margin-top: 2rem; }
  .calc-band + .content { padding-top: .5rem; }
  /* Calculator cards as compact rows (icon, title, example on the home page); the short text stays in the HTML. */
  .calc-index .ci-s { display: none; }
  .calc-index a { align-items: center; min-height: 64px; padding: .75rem 2.4rem .75rem .85rem; }
  .calc-index .ci-ic { grid-row: span 2; width: 38px; height: 38px; }
  .calc-index .ex { margin-top: .2rem; }
  .ci-go { top: 50%; margin-top: -9px; }
  .sec-top { margin-bottom: .6rem; }
  /* The trust card: the heading row opens the text. */
  .trust { padding: .9rem 1rem; align-items: flex-start; }
  .trust-ic { width: 28px; height: 28px; margin-top: 8px; }
  .trust > div { flex: 1; min-width: 0; }
  .trust h2 { font-size: 1.15rem; }
  .trust .fold[open] > summary { margin-bottom: .6rem; }
  .trust .fold-i { background: color-mix(in srgb, var(--surface) 70%, transparent); }
  /* Footer columns: rows on the dark band. */
  .foot-cols { gap: 0; }
  .foot-fold > summary { border-bottom: 1px solid rgba(255, 255, 255, .1); padding: .25rem 0; }
  .foot-cols > div:first-child .foot-fold > summary { border-top: 1px solid rgba(255, 255, 255, .1); }
  .site-foot .foot-fold h2 { margin: 0; }
  .foot-fold .fold-i { background: rgba(255, 255, 255, .08); color: #C9CFE0; }
  .foot-fold > summary:hover .fold-i { background: rgba(255, 255, 255, .14); }
  .foot-fold[open] > ul { padding: .4rem 0 .8rem; }
  .foot-note { margin-top: 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- Print: the result on paper or as PDF ---------- */
@media print {
  :root, html[data-theme="dark"] { --bg: #fff; --surface: #fff; --surface-2: #fff; --surface-3: #eee; --ink: #000; --ink-2: #222; --ink-3: #444; --line: #ccc; --net-ink: #000; --tax-ink: #000; color-scheme: light; }
  body { background: #fff; font-size: 11pt; }
  .fold-i, .fold-show > summary { display: none !important; }
  .site-head, .site-foot, .calc-form, .r-actions, .aff, .others, .cmp, .skip, .peek, .hero-bg, .perks, .crumbs, .live-dot, .faq, .how, .eyebrow { display: none !important; }
  .hero { background: none; color: #000; padding: 0; }
  .hero h1, .hero .lead, .hero .updated, .hero .updated time { color: #000; }
  .calc-band { margin: 0; }
  .calc { display: block; box-shadow: none; border: 0; }
  .result { padding: 0; }
  .print-only { display: block; }
  .r-top { display: none !important; }
  .r-value[data-anim] { color: #000; } .r-value[data-anim]::after { content: none; }
  .r-inputs { padding: .6rem .8rem; border: 1px solid #ccc; border-radius: 8px; margin-bottom: 1rem; }
  .r-inputs h3 { margin: 0 0 .3rem; font-size: 11pt; }
  .r-inputs dl { font-size: 9.5pt; }
  .print-url { font-size: 8.5pt; color: #444; overflow-wrap: anywhere; margin: 0 0 .8rem; }
  .calc { overflow: visible; }
  .r-inputs dl { display: grid; grid-template-columns: 1fr auto; gap: 0 1rem; margin: 0 0 1rem; }
  .r-inputs dl div { display: contents; }
  .r-inputs dd { margin: 0; text-align: right; font-weight: 600; }
  .r-value { font-size: 30pt; }
  .chart, .vbar, .ledger, .periods { break-inside: avoid; }
  .bar, .bs, .sw, .mk-dot { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  a { color: #000; text-decoration: none; }
}

/* Text pages (guides, method, privacy, about): the article as a sheet on a soft gradient band. */
main:not(:has(.hero)) { background: radial-gradient(70rem 22rem at 20% -6rem, color-mix(in srgb, var(--brand) 13%, transparent), transparent 70%), radial-gradient(50rem 18rem at 95% -4rem, color-mix(in srgb, var(--net) 10%, transparent), transparent 70%); background-repeat: no-repeat; }
.prose { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl); box-shadow: var(--shadow-2); padding: 1.4rem 1.1rem 2rem; margin-top: 1rem; margin-bottom: 3rem; }
@media (min-width: 40em) { .prose { padding: 2.2rem 2.6rem 2.6rem; } }
.wrap.prose { max-width: 50rem; margin-left: auto; margin-right: auto; }
@media (max-width: 39.99em) { .wrap.prose { margin-left: .5rem; margin-right: .5rem; } }
.prose > h1:first-child { margin-top: 0; }
.prose .md .disclaimer, .prose .disclaimer { box-shadow: none; background: var(--surface-2); }
.prose .aff { background: var(--surface-2); }
.prose .aff-list a { background: var(--surface); }
.crumbs + .wrap.prose, .crumbs + article.prose { margin-top: .8rem; }
@media print { main:not(:has(.hero)) { background: none; } .prose { border: 0; box-shadow: none; padding: 0; } }
.crumbs:has(+ .prose) { max-width: 50rem; }
.prose ~ .content { max-width: 50rem; }