@layer reset, base, layout, components, utilities, responsive;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { color-scheme: light; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
  body, h1, h2, h3, h4, p, figure { margin: 0; }
  button, input, textarea, select { font: inherit; }
  button, a, input, textarea, select { -webkit-tap-highlight-color: transparent; }
  img, svg { display: block; max-width: 100%; }
  button, input, textarea, select { min-width: 0; }
  [hidden] { display: none !important; }
}

@layer base {
  :root {
    --paper: #f7f8fc;
    --white: #fff;
    --ink: #152440;
    --muted: #67738a;
    --blue: #3159e8;
    --blue-dark: #2547c6;
    --blue-wash: #eef2ff;
    --orange: #f6b36b;
    --line: #e0e5ef;
    --line-dark: #ccd4e3;
    --radius: 12px;
    --shadow: 0 16px 48px #1524400a;
    --sans: "Inter", "Aptos", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  }
  body { background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.65; }
  ::selection { color: var(--ink); background: #f9d6ae; }
  a { color: var(--blue); text-underline-offset: .18em; text-decoration-thickness: 1px; }
  a:hover { color: var(--blue-dark); }
  h1, h2, h3, h4 { line-height: 1.15; font-weight: 650; letter-spacing: -.045em; }
  h1 { font-size: clamp(2.55rem, 5.2vw, 4.65rem); }
  h2 { font-size: clamp(1.9rem, 3.1vw, 2.65rem); }
  h3 { font-size: 1.15rem; letter-spacing: -.025em; }
  p { text-wrap: pretty; }
  button, input, select, textarea, a { outline-offset: 4px; }
  :focus-visible { outline: 3px solid #819bff; }
  button { cursor: pointer; }
  button:disabled { cursor: not-allowed; opacity: .55; }
  input, select, textarea { width: 100%; max-width: 100%; min-height: 48px; border: 1px solid var(--line-dark); border-radius: 7px; background: var(--white); color: var(--ink); padding: .7rem .82rem; line-height: 1.3; transition: border-color .15s, box-shadow .15s; }
  input:hover, select:hover, textarea:hover { border-color: #a4b2ce; }
  input:focus, select:focus, textarea:focus { outline: 0; border-color: var(--blue); box-shadow: 0 0 0 3px #3159e81a; }
  input[type="number"], input[type="time"], input[type="date"] { font-variant-numeric: tabular-nums; }
  input[type="date"], input[type="time"], input[type="datetime-local"] { -webkit-appearance: none; appearance: none; }
  input[type="checkbox"], input[type="radio"] { width: 18px; min-height: 18px; height: 18px; padding: 0; accent-color: var(--blue); border-radius: 3px; flex: 0 0 auto; }
  textarea { resize: vertical; min-height: 110px; }
  input::placeholder, textarea::placeholder { color: #8c97a9; opacity: 1; }
  hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
  code { font-family: var(--mono); font-size: .9em; }
  table { border-collapse: collapse; width: 100%; }
  th { text-align: left; font-weight: 650; }
  td, th { padding: .9rem 1rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
  thead { color: var(--muted); font-size: .74rem; letter-spacing: .07em; text-transform: uppercase; }
}

@layer layout {
  .container { width: min(1220px, calc(100% - 72px)); margin-inline: auto; }
  .site-header { background: #ffffffed; border-bottom: 1px solid var(--line); position: relative; z-index: 10; }
  .site-header > .container { display: flex; align-items: center; justify-content: space-between; gap: 2rem; min-height: 88px; }
  .brand { display: inline-flex; align-items: center; gap: .67rem; color: var(--ink); text-decoration: none; font-size: 1.25rem; font-weight: 750; letter-spacing: -.045em; line-height: 1; white-space: nowrap; }
  .brand:hover { color: var(--ink); }
  .brand svg, .brand-mark { width: 33px; height: 33px; flex: 0 0 auto; }
  .brand small { display: block; font-size: .59rem; font-weight: 550; text-transform: uppercase; letter-spacing: .16em; color: var(--muted); margin-top: .43rem; }
  .nav { display: flex; align-items: center; justify-content: flex-end; gap: 2rem; font-size: .88rem; font-weight: 550; }
  .nav a { color: var(--muted); text-decoration: none; white-space: nowrap; }
  .nav a:hover, .nav a[aria-current="page"] { color: var(--blue); }
  main { min-height: 62vh; }
  section { scroll-margin-top: 24px; }
  .hero { display: grid; grid-template-columns: 1.03fr 1fr; align-items: center; gap: 3.5rem; padding-block: 77px 70px; }
  .hero-copy { max-width: 610px; }
  .hero-copy h1 { max-width: 640px; margin-bottom: 1.45rem; }
  .hero-copy > p:not(.eyebrow) { max-width: 470px; color: var(--muted); font-size: 1.08rem; line-height: 1.75; }
  .hero-copy .hero-actions, .hero-copy .utility-row { margin-top: 2rem; }
  .hero-art { position: relative; min-width: 0; }
  .hero-art img, .hero-art svg { width: 100%; height: auto; }
  .hero-art figcaption { color: var(--muted); font-size: .72rem; text-align: center; margin-top: .4rem; }
  .hero-note { margin-top: 1.25rem; font-size: .77rem !important; display: flex; gap: .6rem; align-items: center; }
  .hero-note::before { content: ""; width: 6px; height: 6px; background: var(--blue); border-radius: 50%; flex: 0 0 auto; }
  .section { padding-block: 66px; }
  .section + .section { padding-top: 28px; }
  .section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; margin-bottom: 2rem; }
  .section-heading p { color: var(--muted); max-width: 460px; font-size: .93rem; }
  .section-heading .eyebrow { margin-bottom: .75rem; }
  .tool-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
  .content-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
  .step-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem; }
  .calculator-layout { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(300px, .88fr); align-items: start; gap: 1.5rem; margin-block: 2rem 4rem; }
  .calculator-input { min-width: 0; }
  .calculator-output { min-width: 0; position: sticky; top: 25px; }
  .field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem 1.2rem; }
  .field-grid .full-width, .field-grid .span-2 { grid-column: 1 / -1; }
  .footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 3rem; }
  .page-hero { padding-block: 44px 15px; max-width: 900px; }
  .page-hero h1 { font-size: clamp(2.2rem, 4vw, 3.6rem); margin-bottom: 1rem; }
  .page-hero > p:not(.eyebrow) { max-width: 720px; font-size: 1.05rem; color: var(--muted); }
  .page-hero .eyebrow { margin-top: 1rem; }
  .article-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(200px, 1fr); align-items: start; gap: 5rem; padding-block: 2rem 5rem; }
  .article-layout aside { position: sticky; top: 2rem; }
}

@layer components {
  .button { display: inline-flex; justify-content: center; align-items: center; gap: .7rem; min-height: 48px; padding: .79rem 1.2rem; border: 1px solid var(--blue); border-radius: 7px; background: var(--blue); color: white; font-size: .88rem; line-height: 1.25; font-weight: 650; text-decoration: none; transition: background .15s, border-color .15s, transform .15s; }
  .button:hover { background: var(--blue-dark); color: white; border-color: var(--blue-dark); transform: translateY(-1px); }
  .button svg { width: 17px; height: 17px; }
  .button-secondary { color: var(--ink); background: transparent; border-color: var(--line-dark); }
  .button-secondary:hover { color: var(--ink); background: white; border-color: #9faec8; }
  .button-small { padding: .58rem .88rem; min-height: 39px; font-size: .78rem; }
  .nav .button { color: white; }
  .nav .button-secondary { color: var(--ink); }
  .language-selector { display: inline-flex; align-items: center; gap: .35rem; min-width: 0; color: var(--muted); }
  .language-selector select { width: auto; max-width: 132px; min-height: 37px; padding: .45rem 1.45rem .45rem .6rem; border-color: var(--line); border-radius: 6px; font-size: .73rem; background-color: white; color: var(--ink); }
  .language-selector > svg { width: 15px; height: 15px; flex: 0 0 auto; }
  .language-selector label { font-size: .7rem; }
  .button-link { color: var(--blue); background: none; border: 0; padding: .4rem 0; font-weight: 650; font-size: .86rem; text-decoration: none; }
  .button-link:hover { color: var(--blue-dark); text-decoration: underline; }
  .eyebrow { font-family: var(--mono); font-size: .68rem; font-weight: 600; line-height: 1.45; color: var(--blue); text-transform: uppercase; letter-spacing: .13em; margin-bottom: 1.3rem; }
  .hero-copy .eyebrow { display: flex; align-items: center; gap: .65rem; }
  .hero-copy .eyebrow::before { content: ""; height: 7px; width: 7px; background: var(--orange); display: inline-block; }
  .hero-copy h1 em { color: var(--blue); font-style: normal; }
  .hero-actions, .utility-row, .results-actions { display: flex; align-items: center; flex-wrap: wrap; gap: .8rem; }
  .utility-row { font-size: .82rem; }
  .tool-card { display: flex; min-width: 0; flex-direction: column; align-items: start; min-height: 242px; padding: 1.55rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); text-decoration: none; color: var(--ink); transition: border-color .18s, box-shadow .18s, transform .18s; position: relative; }
  .tool-card:hover { color: var(--ink); transform: translateY(-3px); border-color: #a8b7ed; box-shadow: var(--shadow); }
  .tool-icon { width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center; background: var(--blue-wash); color: var(--blue); border-radius: 9px; margin-bottom: 1.45rem; font-size: 1.25rem; font-family: var(--mono); font-weight: 550; }
  .tool-icon svg { width: 22px; height: 22px; }
  .tool-card:nth-child(4n + 2) .tool-icon { background: #fff2e5; color: #a96b32; }
  .tool-card:nth-child(4n + 3) .tool-icon { background: #edf4f2; color: #39796a; }
  .tool-card h3 { margin-bottom: .65rem; padding-right: .6rem; }
  .tool-card p { color: var(--muted); font-size: .82rem; line-height: 1.65; margin-bottom: 1.15rem; }
  .tool-card .tool-link, .tool-card > span:last-child:not(.tool-icon) { color: var(--blue); font-size: .75rem; font-weight: 650; margin-top: auto; }
  .tool-card .tool-link::after { content: " ↗"; }
  .tag { display: inline-block; border: 1px solid var(--line); border-radius: 4px; color: var(--muted); background: #ffffff94; font-family: var(--mono); font-size: .62rem; line-height: 1.4; letter-spacing: .055em; padding: .25rem .4rem; text-transform: uppercase; }
  .panel { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.75rem; background: var(--white); }
  .panel > h2, .panel > h3 { font-size: 1.25rem; margin-bottom: .55rem; }
  .panel > p { color: var(--muted); font-size: .87rem; margin-bottom: 1.5rem; }
  .calculator-input .section-heading { margin-bottom: 1.5rem; gap: .75rem; align-items: center; }
  .calculator-input .section-heading h2 { font-size: 1.2rem; }
  .calculator-input .field-grid { margin-top: 1.5rem; }
  .calculator-input .utility-row { margin-top: 1.5rem; }
  .calculator-input fieldset { padding: 0; margin: 0 0 1.5rem; border: 0; min-width: 0; }
  .calculator-input legend { font-weight: 650; font-size: .9rem; margin-bottom: .7rem; }
  .field { display: flex; flex-direction: column; gap: .42rem; min-width: 0; }
  .field > label, .field > span:first-child { color: var(--ink); font-size: .8rem; font-weight: 600; line-height: 1.45; }
  .field > label, .field > span:first-child, .tool-card h3, .metric-label, .nav a { overflow-wrap: anywhere; }
  .field > small { color: var(--muted); font-size: .72rem; line-height: 1.5; font-weight: 400; }
  .field .input-unit { position: relative; }
  .field .input-unit input { padding-right: 3.5rem; }
  .field .input-unit span { position: absolute; top: 50%; right: .85rem; transform: translateY(-50%); color: var(--muted); font-size: .8rem; }
  .checkbox-field { display: flex; align-items: flex-start; gap: .65rem; font-size: .84rem; line-height: 1.55; font-weight: 400; margin-block: .5rem; }
  .checkbox-field input { margin: .15rem 0 0; }
  .checkbox-field label, label.checkbox-field { font-weight: 400; cursor: pointer; }
  .weekend-picker { display: flex; gap: .5rem; flex-wrap: wrap; }
  .weekend-picker label { display: flex; align-items: center; gap: .42rem; padding: .65rem .7rem; border: 1px solid var(--line); border-radius: 6px; background: #fafbfe; font-size: .76rem; font-weight: 450; cursor: pointer; }
  .weekend-picker label:has(input:checked) { background: var(--blue-wash); color: var(--blue); border-color: #bdcafa; }
  .calculator-output { background: var(--ink); color: white; border-color: var(--ink); overflow: hidden; }
  .calculator-output > h2, .calculator-output > h3 { color: #c6d0e5; font-family: var(--mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .11em; font-weight: 500; }
  .calculator-output .eyebrow { color: #a4b6ff; margin-bottom: 1rem; }
  .calculator-output > p, .calculator-output .muted { color: #a7b5cd; }
  .calculator-output a { color: #c0ccff; }
  .metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
  .metric { display: flex; min-width: 0; flex-direction: column; gap: .35rem; padding-top: 1.15rem; border-top: 1px solid #ffffff20; }
  .metric-label, .metric > span:first-child { font-size: .71rem; color: #b6c3d9; line-height: 1.5; letter-spacing: .005em; }
  .metric strong { font-family: var(--mono); font-weight: 500; font-size: 1.48rem; letter-spacing: -.055em; line-height: 1.3; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; direction: ltr; unicode-bidi: isolate; text-align: start; }
  .metric small, .metric-unit { font-size: .71rem; color: #a7b5cd; font-weight: 400; }
  .metric-primary { grid-column: 1 / -1; border-top: 0; padding-block: .6rem 1.3rem; }
  .metric-primary strong { font-size: clamp(2.35rem, 4.5vw, 3.45rem); letter-spacing: -.065em; color: white; }
  .metric-primary > span:first-child { color: #a7b5cd; }
  .calculator-output .notice { color: #c0cbe0; background: #ffffff09; border: 1px solid #ffffff1c; margin-top: 1.5rem; padding: .85rem 1rem; font-size: .73rem; }
  .calculator-output .button-secondary { color: white; border-color: #ffffff44; background: transparent; }
  .calculator-output .button-secondary:hover { border-color: #ffffff88; background: #ffffff09; }
  .calculator-output .results-actions { margin-top: 1.5rem; padding-top: 1.3rem; border-top: 1px solid #ffffff20; }
  .calculator-output .status { color: #bed4c9; }
  .result-note { color: #a7b5cd; font-size: .75rem; margin-top: 1rem; }
  .notice { border: 1px solid #dce4fa; background: #f0f4ff; border-radius: 8px; color: #475c88; padding: 1rem 1.15rem; font-size: .82rem; line-height: 1.7; }
  .notice strong { color: var(--ink); }
  .status { font-size: .8rem; color: #426b57; min-height: 1.25rem; }
  .error, .field-error { color: #ac313f; font-size: .82rem; }
  .error { padding: .85rem 1rem; border: 1px solid #f0cdd1; background: #fff3f4; border-radius: 7px; }
  .error:empty { display: none; }
  .table-wrap { width: 100%; max-width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; -webkit-overflow-scrolling: touch; }
  .timecard-table { min-width: 640px; background: white; font-variant-numeric: tabular-nums; font-size: .81rem; }
  .timecard-table td, .timecard-table th { padding: .7rem .6rem; }
  .timecard-table thead { background: #f6f8fd; font-size: .65rem; }
  .timecard-table tbody th { font-size: .8rem; white-space: nowrap; }
  .timecard-table input { min-height: 41px; padding: .55rem .45rem; font-size: .8rem; min-width: 75px; }
  .timecard-table input[type="checkbox"] { width: 18px; min-width: 18px; min-height: 18px; height: 18px; padding: 0; }
  .timecard-table td:last-child { font-family: var(--mono); white-space: nowrap; }
  .timecard-table tfoot { font-weight: 650; background: #f6f8fd; }
  .timecard-table tr:last-child td, .timecard-table tr:last-child th { border-bottom: 0; }
  .calculator-layout.timecard-layout { grid-template-columns: minmax(0, 1.6fr) minmax(280px, .8fr); }
  .calculator-layout:has(.timecard-table) { grid-template-columns: minmax(0, 1.6fr) minmax(280px, .8fr); }
  .calculator-input:has(.timecard-table) { padding: 1.4rem; }
  .calculator-input .table-wrap { margin-block: 1.5rem; }
  .guide-card { min-width: 0; padding: 1.7rem; border: 1px solid var(--line); background: white; border-radius: var(--radius); text-decoration: none; color: var(--ink); display: flex; flex-direction: column; align-items: start; transition: border-color .15s; }
  .guide-card:hover { border-color: #a8b7ed; color: var(--ink); }
  .guide-card .tag { margin-bottom: 1.4rem; }
  .guide-card h3 { font-size: 1.25rem; line-height: 1.35; margin-bottom: .75rem; }
  .guide-card p { color: var(--muted); font-size: .85rem; line-height: 1.7; margin-bottom: 1.5rem; }
  .guide-card .guide-meta { color: var(--blue); font-size: .73rem; font-weight: 550; margin-top: auto; }
  .step-card { padding-top: 1.35rem; border-top: 1px solid var(--line-dark); }
  .step-card > span { display: block; margin-bottom: 1.5rem; font-family: var(--mono); font-size: .73rem; color: var(--blue); }
  .step-card h3 { margin-bottom: .8rem; }
  .step-card p { color: var(--muted); font-size: .87rem; }
  .cta-band { margin-block: 2rem 4.5rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 2.75rem 3rem; background: var(--blue-wash); border: 1px solid #dce3fb; border-radius: var(--radius); }
  .cta-band h2 { font-size: clamp(1.7rem, 3vw, 2.25rem); margin-bottom: .6rem; }
  .cta-band p { font-size: .9rem; color: var(--muted); max-width: 640px; }
  .cta-band .button { flex: 0 0 auto; }
  .prose { font-size: .95rem; line-height: 1.85; max-width: 800px; }
  .prose > * + * { margin-top: 1.05rem; }
  .prose h2 { font-size: 1.65rem; margin-top: 2.5rem; margin-bottom: .85rem; }
  .prose h3 { font-size: 1.17rem; margin-top: 1.8rem; }
  .prose p, .prose li { color: #55647b; }
  .prose ul, .prose ol { padding-left: 1.25rem; }
  .prose li + li { margin-top: .5rem; }
  .prose strong { color: var(--ink); font-weight: 650; }
  .prose .formula { font-family: var(--mono); background: white; border: 1px solid var(--line); border-left: 3px solid var(--blue); border-radius: 0 7px 7px 0; padding: 1rem 1.25rem; color: var(--ink); font-size: .83rem; overflow-wrap: anywhere; }
  .prose table { font-size: .84rem; }
  .prose .notice { margin-top: 1.6rem; }
  .prose .sources { font-size: .82rem; }
  .faq { border-top: 1px solid var(--line); }
  .faq details { border-bottom: 1px solid var(--line); }
  .faq summary { cursor: pointer; font-size: .93rem; font-weight: 600; color: var(--ink); padding: 1.2rem 2rem 1.2rem 0; position: relative; list-style: none; line-height: 1.5; }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary::after { content: "+"; font-family: var(--mono); position: absolute; right: .25rem; color: var(--blue); font-size: 1.15rem; line-height: 1.15; }
  .faq details[open] summary::after { content: "−"; }
  .faq details p { color: var(--muted); font-size: .88rem; padding-bottom: 1.25rem; }
  .breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: .5rem; color: var(--muted); font-size: .72rem; padding-block: 1.7rem 0; }
  .breadcrumb a { color: var(--muted); text-decoration: none; }
  .breadcrumb a:hover { color: var(--blue); text-decoration: underline; }
  .breadcrumb span[aria-hidden] { color: #a1adbf; }
  .site-footer { background: white; border-top: 1px solid var(--line); padding-block: 3.5rem 1.5rem; margin-top: 3rem; }
  .site-footer .brand { margin-bottom: 1.1rem; }
  .site-footer p { color: var(--muted); font-size: .78rem; max-width: 290px; }
  .site-footer h3, .footer-title { font-size: .72rem; font-weight: 650; letter-spacing: .03em; margin-bottom: 1.1rem; }
  .site-footer ul { list-style: none; margin: 0; padding: 0; }
  .site-footer li + li { margin-top: .6rem; }
  .site-footer a:not(.brand) { color: var(--muted); font-size: .77rem; text-decoration: none; }
  .site-footer a:hover:not(.brand) { color: var(--blue); }
  .footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; padding-top: 1.5rem; margin-top: 2.75rem; border-top: 1px solid var(--line); color: #7e899c; font-size: .69rem; }
  .footer-bottom p { font-size: .69rem; max-width: none; }
  .aside-links { display: flex; flex-direction: column; gap: .75rem; }
  .aside-links a { text-decoration: none; font-size: .83rem; }
  .aside-links h2 { font-size: 1rem; margin-bottom: .5rem; }
  .empty-state { padding: 4rem 2rem; text-align: center; }
  .empty-state h1 { margin-bottom: 1rem; }
  .empty-state p { color: var(--muted); margin-bottom: 1.5rem; }
  [dir="rtl"] .language-selector select { padding: .45rem .6rem .45rem 1.45rem; }
  [dir="rtl"] .tool-card h3 { padding-right: 0; padding-left: .6rem; }
  [dir="rtl"] .field .input-unit input { padding-right: .82rem; padding-left: 3.5rem; }
  [dir="rtl"] .field .input-unit span { right: auto; left: .85rem; }
  [dir="rtl"] .faq summary { padding-right: 0; padding-left: 2rem; }
  [dir="rtl"] .faq summary::after { right: auto; left: .25rem; }
  [dir="rtl"] th { text-align: right; }
  [dir="rtl"] .prose ul, [dir="rtl"] .prose ol { padding-left: 0; padding-right: 1.25rem; }
  [dir="rtl"] .prose .formula { border-left-width: 1px; border-right: 3px solid var(--blue); border-radius: 7px 0 0 7px; }
  [dir="rtl"] .timecard-table input, [dir="rtl"] input[type="number"], [dir="rtl"] input[type="date"], [dir="rtl"] input[type="time"], [dir="rtl"] input[type="datetime-local"] { direction: ltr; unicode-bidi: isolate; text-align: start; }
  [dir="rtl"] .timecard-table td:last-child { direction: ltr; unicode-bidi: isolate; }
}

@layer utilities {
  .muted { color: var(--muted); }
  .text-blue { color: var(--blue); }
  .text-small { font-size: .8rem; }
  .mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
  .wide { max-width: none; }
  .full-width { width: 100%; }
  .mb-0 { margin-bottom: 0; }
  .mt-2 { margin-top: 2rem; }
  .sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
  .skip-link:focus { position: fixed; z-index: 100; top: 10px; left: 10px; color: white; background: var(--ink); padding: .8rem 1.2rem; border-radius: 6px; }
}

@layer responsive {
  @media (min-width: 1450px) { .hero { padding-block: 95px 90px; } }
  @media (max-width: 1120px) {
    .nav { gap: 1.25rem; }
    .hero { gap: 1.5rem; }
    .tool-card { padding: 1.3rem; }
    .tool-card h3 { font-size: 1.05rem; }
    .footer-grid { gap: 2rem; }
    .calculator-layout:has(.timecard-table), .calculator-layout.timecard-layout { grid-template-columns: minmax(0, 1fr); }
    .calculator-layout:has(.timecard-table) .calculator-output, .timecard-layout .calculator-output { position: static; }
    .calculator-layout:has(.timecard-table) .metrics, .timecard-layout .metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .calculator-layout:has(.timecard-table) .metric-primary, .timecard-layout .metric-primary { grid-column: 1 / -1; }
  }
  @media (max-width: 900px) {
    .container { width: min(1220px, calc(100% - 44px)); }
    .site-header > .container { min-height: 78px; gap: 1rem; }
    .brand { font-size: 1.1rem; }
    .brand svg, .brand-mark { width: 29px; height: 29px; }
    .nav { font-size: .78rem; gap: 1rem; }
    .language-selector select { max-width: 108px; }
    .nav .button { padding: .6rem .8rem; min-height: 39px; font-size: .73rem; }
    .hero { padding-block: 55px 45px; gap: 1.1rem; }
    .hero h1 { font-size: clamp(2.5rem, 5.6vw, 3.7rem); }
    .hero-copy > p:not(.eyebrow) { font-size: .96rem; }
    .hero .button { font-size: .8rem; padding-inline: 1rem; }
    .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tool-card { min-height: 235px; padding: 1.6rem; }
    .tool-card h3 { font-size: 1.15rem; }
    .section { padding-block: 48px; }
    .section-heading { gap: 1.5rem; }
    .section-heading > p { max-width: 300px; font-size: .85rem; }
    .content-grid { gap: 1rem; }
    .guide-card { padding: 1.4rem; }
    .guide-card h3 { font-size: 1.1rem; }
    .step-grid { gap: 1.5rem; }
    .calculator-layout { grid-template-columns: minmax(0, 1fr) minmax(280px, .85fr); gap: 1rem; }
    .calculator-input, .calculator-output { padding: 1.4rem; }
    .field-grid { gap: .95rem .8rem; }
    .field > label, .field > span:first-child { font-size: .75rem; }
    .metric strong { font-size: 1.25rem; }
    .metric-primary strong { font-size: 2.6rem; }
    .article-layout { grid-template-columns: 1fr; gap: 2.5rem; }
    .article-layout aside { position: static; }
    .aside-links { flex-direction: row; flex-wrap: wrap; gap: .75rem 1.5rem; }
    .aside-links h2 { width: 100%; }
    .cta-band { padding: 2rem; }
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
    .footer-grid > :first-child { grid-column: 1 / -1; }
    .site-footer p { max-width: 460px; }
  }
  @media (max-width: 680px) {
    .container { width: calc(100% - 36px); }
    .site-header > .container { padding-block: 16px 13px; min-height: 0; flex-wrap: wrap; gap: 1.15rem; }
    .brand { font-size: 1.22rem; }
    .nav { width: 100%; justify-content: space-between; gap: .8rem; font-size: .75rem; }
    .nav { flex-wrap: wrap; }
    .language-selector { margin-inline-start: auto; }
    .language-selector select { max-width: 122px; min-height: 35px; }
    .nav .button { margin-left: auto; }
    [dir="rtl"] .nav .button { margin-left: 0; margin-right: auto; }
    .hero { grid-template-columns: 1fr; gap: 1.5rem; padding-block: 42px 32px; }
    .hero-copy { max-width: 560px; }
    .hero h1 { font-size: clamp(2.6rem, 9vw, 3.7rem); max-width: 550px; }
    .hero-copy > p:not(.eyebrow) { font-size: 1rem; }
    .hero-copy .eyebrow { margin-bottom: 1.05rem; }
    .hero-copy .hero-actions, .hero-copy .utility-row { margin-top: 1.5rem; }
    .hero-art { width: min(100%, 540px); margin-inline: auto; }
    .hero-art figcaption { font-size: .67rem; }
    .section { padding-block: 37px; }
    .section-heading { display: block; margin-bottom: 1.5rem; }
    .section-heading > p { max-width: 100%; margin-top: 1rem; }
    .section-heading > a, .section-heading > .button { margin-top: 1rem; }
    h2 { font-size: 1.9rem; }
    .tool-card { padding: 1.3rem; min-height: 245px; }
    .tool-card h3 { font-size: 1.08rem; }
    .tool-card p { font-size: .79rem; }
    .tool-icon { margin-bottom: 1.1rem; }
    .tool-grid { gap: .8rem; }
    .content-grid, .step-grid { grid-template-columns: 1fr; }
    .guide-card { padding: 1.5rem; }
    .guide-card h3 { font-size: 1.2rem; }
    .guide-card .tag { margin-bottom: 1rem; }
    .guide-card p { margin-bottom: 1rem; }
    .step-grid { gap: 1.5rem; }
    .step-card > span { margin-bottom: .9rem; }
    .calculator-layout { grid-template-columns: 1fr; gap: 1rem; margin-bottom: 2.5rem; }
    .calculator-output { position: static; }
    .calculator-input, .calculator-output { padding: 1.4rem; }
    .calculator-input .section-heading { display: flex; }
    .calculator-output .metric-primary strong { font-size: 3.15rem; }
    .calculator-layout:has(.timecard-table) .metrics, .timecard-layout .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .calculator-input:has(.timecard-table) { padding: 1rem; }
    .page-hero { padding-top: 28px; }
    .page-hero h1 { font-size: 2.55rem; }
    .page-hero > p:not(.eyebrow) { font-size: .95rem; }
    .breadcrumb { padding-top: 1.2rem; font-size: .66rem; }
    .article-layout { padding-top: 1rem; padding-bottom: 3rem; }
    .prose { font-size: .91rem; }
    .prose h2 { font-size: 1.5rem; }
    .cta-band { padding: 1.75rem; display: block; margin-bottom: 2.5rem; }
    .cta-band .button { margin-top: 1.3rem; }
    .site-footer { padding-top: 2.5rem; margin-top: 2rem; }
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem; }
    .footer-grid > :first-child { grid-column: 1 / -1; }
    .footer-bottom { margin-top: 2rem; padding-top: 1.2rem; font-size: .66rem; }
    .eyebrow { font-size: .63rem; }
  }
  @media (max-width: 420px) {
    .container { width: calc(100% - 30px); }
    .tool-grid { grid-template-columns: 1fr; }
    .tool-card { min-height: 0; padding: 1.5rem; }
    .tool-card .tool-icon { margin-bottom: 1rem; }
    .tool-card p { font-size: .83rem; }
    .tool-card h3 { font-size: 1.2rem; }
    .hero h1 { font-size: 2.65rem; }
    .hero .hero-actions { align-items: stretch; }
    .hero .hero-actions .button { flex: 1 1 auto; }
    .calculator-input, .calculator-output { padding: 1.15rem; }
    .field-grid { gap: 1rem .65rem; }
    .field input, .field select { padding-inline: .6rem; font-size: .9rem; }
    .nav { font-size: .72rem; gap: .6rem; }
    .nav .button { font-size: .68rem; padding-inline: .65rem; }
    .footer-grid { gap: 1.75rem 1rem; }
  }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
  }
  @media print {
    @page { margin: 16mm; }
    body { background: white; color: black; font-size: 11pt; }
    .container { width: 100%; max-width: none; }
    .site-header, .site-footer, .nav, .breadcrumb, .hero-art, .skip-link, .results-actions, .utility-row, .calculator-input form > .field-grid, .calculator-input .button, .calculator-output .button, .button, .cta-band, aside, .ad-slot { display: none !important; }
    .page-hero { padding-block: 0 15pt; }
    .page-hero h1 { font-size: 25pt; }
    .calculator-layout, .calculator-layout:has(.timecard-table) { display: block; margin-block: 12pt; }
    .calculator-input, .calculator-output { position: static; background: white; color: black; padding: 12pt; border: 1px solid #bbb; box-shadow: none; margin-bottom: 12pt; break-inside: avoid; }
    .calculator-input:not(:has(.timecard-table)) { display: none; }
    .calculator-output h2, .calculator-output h3, .calculator-output p, .calculator-output .metric-label, .calculator-output .metric > span:first-child, .calculator-output .metric small, .calculator-output .muted { color: #444; }
    .metric { border-color: #ccc; }
    .metric strong, .metric-primary strong { color: black; }
    .metric-primary strong { font-size: 28pt; }
    .calculator-output .notice { color: #444; border-color: #ccc; background: white; }
    .table-wrap { overflow: visible; border: 0; }
    .timecard-table { min-width: 0; font-size: 9pt; }
    .timecard-table td, .timecard-table th { padding: 5pt 4pt; }
    .timecard-table input { min-height: 0; border: 0; background: transparent; padding: 0; width: 100%; font-size: 9pt; }
    .prose { max-width: none; font-size: 10pt; }
    .prose h2, .prose h3 { break-after: avoid; }
    .prose p, .prose li { color: #333; }
    a { color: inherit; }
  }
}
.timecard-table input[type="checkbox"]{min-width:18px;width:18px;min-height:18px;accent-color:var(--blue)}
.metric strong{overflow-wrap:anywhere;max-width:100%;unicode-bidi:isolate}.calculation-notes{font-size:.84rem;line-height:1.6;margin-top:1.5rem;color:#bdc9de}.calculation-notes h3{font-size:.85rem;color:#e4ebf9}.language-guide-note{font-size:.8rem}.calculator-layout>#daily-results{grid-column:1/-1;width:100%;min-width:0}.calculator-input #calculator-fields{min-width:0}.calculator-layout .metric-primary strong{font-size:clamp(1.9rem,3.3vw,2.75rem)}
@media print{.calculator-output{display:block!important}.calculator-input,.article-layout,.language-guide-note{display:none!important}.calculator-output .calculation-notes{color:#444}.calculator-output .calculation-notes h3{color:#222}#daily-results:not([hidden]){display:block!important}#daily-results[hidden]{display:none!important}.calculator-output{break-inside:avoid}}

.article-grid>.language-guide-note,.article-layout>.language-guide-note{grid-column:1/-1;margin-block:0 1rem}

.language-directory{padding-block:1.5rem;border-top:1px solid currentColor;margin-top:2rem}.language-directory summary{cursor:pointer;font-weight:600}.language-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(125px,1fr));gap:.6rem 1rem;list-style:none;padding:1rem 0;margin:0}.language-directory a{display:inline-block;font-size:.85rem}.language-links a[aria-current=page]{text-decoration:underline}.english-link-label{font-size:.75em;opacity:.7}.localized-explanation .metrics{margin-block:1.4rem;background:#152440;padding:1rem;border-radius:10px;color:white}.localized-explanation .metric strong{color:white}.localized-input-example{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.6rem;margin-block:1rem}.localized-input-example>div{border:1px solid #ccd2d7;padding:.7rem;border-radius:6px}.localized-input-example dt{font-size:.8rem;opacity:.75}.localized-input-example dd{margin:0;font-weight:600}