:root {
  color-scheme: light;
  --ink: #272a2d;
  --muted: #626a70;
  --line: #dce1e5;
  --paper: #fff;
  --canvas: #f5f7f9;
  --yellow: #ffd200;
  --yellow-light: #fff8d6;
  --orange: #ff5727;
  --negative: #ab392a;
  --green: #286b5c;
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  font-synthesis: none;
  font-feature-settings: "palt" 1;
}
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--canvas); font-size: 15px; line-height: 1.7; }
[hidden] { display: none !important; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { opacity: .5; cursor: default; }
a { color: #285b8a; text-underline-offset: .2em; }
button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible, a:focus-visible { outline: 3px solid #355f86; outline-offset: 3px; }
h1, h2, h3, p { margin: 0; }
.site-header { background: var(--paper); border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1240px; margin: auto; min-height: 87px; padding: 14px 32px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand-logo { display: block; width: 176px; height: auto; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.button { border: 0; border-radius: 7px; min-height: 40px; padding: 8px 16px; font-weight: 600; background: transparent; }
.button-quiet:hover { background: var(--canvas); }
.button-outline { border: 1px solid #b6bec5; background: var(--paper); }
.button-outline:hover { background: var(--canvas); }
.page-shell { max-width: 1240px; margin: auto; padding: 0 32px; }
.introduction { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 48px 0 38px; }
.intro-label { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
h1 { font-size: clamp(25px, 3vw, 36px); line-height: 1.5; letter-spacing: .015em; font-weight: 700; }
.intro-description { margin-top: 17px; line-height: 1.9; color: #50575c; }
.inline-highlight { color: var(--ink); font-weight: 700; white-space: nowrap; }
.time-stamp { flex: 0 0 178px; padding: 16px 0; text-align: center; border-left: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.time-stamp > span { display: block; }
.time-stamp strong { display: block; color: var(--ink); font-size: 60px; line-height: 1.15; font-weight: 700; font-variant-numeric: tabular-nums; }
.time-stamp strong span { font-size: 16px; margin-left: 6px; }
.mobile-break { display: none; }
.calculator-layout { display: grid; grid-template-columns: 340px minmax(0, 1fr); align-items: start; gap: 28px; }
.input-panel { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 26px 24px 0; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.panel-heading h2, .result-heading h2 { font-size: 18px; line-height: 1.6; }
.text-button { background: none; border: 0; font-size: 12px; color: var(--muted); padding: 4px 0; text-decoration: underline; text-underline-offset: 4px; }
.panel-description { margin-top: 9px; color: var(--muted); font-size: 13px; }
.main-field { margin-top: 27px; }
label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 8px; }
.stepper { display: flex; align-items: stretch; border: 1px solid #a7afb6; border-radius: 7px; overflow: hidden; min-height: 61px; }
.stepper > button { flex: 0 0 42px; background: var(--paper); border: 0; font-size: 22px; color: var(--muted); }
.stepper > button:hover { background: var(--yellow-light); color: var(--ink); }
.stepper > button:focus-visible { outline-offset: -4px; }
.number-unit { flex: 1; min-width: 0; display: flex; align-items: baseline; justify-content: center; gap: 8px; }
.number-unit input { min-width: 0; width: 100%; max-width: 140px; padding: 6px 0; border: 0; background: var(--paper); text-align: right; font-size: 30px; font-weight: 700; line-height: 1.5; font-variant-numeric: tabular-nums; appearance: textfield; -moz-appearance: textfield; }
.number-unit input::-webkit-inner-spin-button, .number-unit input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.number-unit input:focus-visible { outline-offset: -3px; }
.number-unit > span { margin-right: 14px; color: var(--muted); }
.field-help { color: var(--muted); font-size: 12px; line-height: 1.7; margin-top: 7px; }
.field-error { font-size: 12px; color: var(--negative); margin-top: 4px; }
.field-error:empty { display: none; }
[aria-invalid="true"] { outline: 2px solid var(--negative); outline-offset: -2px; }
.example-group { margin: 22px 0 26px; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 11px; }
.example-group > span { color: var(--muted); margin-right: 2px; }
.example-group button { padding: 5px 8px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); font-size: 12px; }
.example-group button:hover { background: var(--yellow-light); border-color: #d4b535; }
.advanced-settings { margin: 0 -24px; border-top: 1px solid var(--line); }
summary { cursor: pointer; }
.advanced-settings > summary { list-style: none; display: flex; justify-content: space-between; gap: 12px; padding: 17px 24px; font-size: 14px; font-weight: 600; }
summary::-webkit-details-marker { display: none; }
details[open] > summary > span:last-child[aria-hidden="true"] { transform: rotate(45deg); }
.advanced-intro { margin: 0 24px 20px; font-size: 12px; color: var(--muted); }
fieldset { margin: 20px 24px 25px; padding: 0; border: 0; min-width: 0; }
legend { display: block; width: 100%; padding: 12px 0 0; border-top: 1px solid var(--line); font-size: 13px; font-weight: 700; }
.field { margin-top: 17px; }
.field label { font-size: 12px; }
.field input, .field select { display: block; width: 100%; min-height: 43px; padding: 8px 10px; border: 1px solid #b7bfc6; border-radius: 5px; background: var(--paper); font-size: 14px; }
.field input::placeholder { color: #768088; font-size: 12px; }
.results { min-width: 0; }
.result-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-top: 4px; }
.estimate-label { font-size: 11px; border: 1px solid #c8cfd4; padding: 3px 8px; border-radius: 4px; white-space: nowrap; color: var(--muted); }
.condition-summary { font-size: 12px; color: var(--muted); margin-top: 6px; }
.main-results { margin-top: 22px; display: grid; grid-template-columns: 0.9fr 1.4fr; gap: 22px; }
.main-results h3 { font-size: 13px; font-weight: 600; }
.client-result { padding: 21px 23px; background: var(--yellow); border-radius: 10px; }
.income-result { padding: 21px 0; min-width: 0; }
.large-number, .income-number { font-weight: 700; font-variant-numeric: tabular-nums; font-feature-settings: "palt" 0; line-height: 1.35; margin-top: 5px; letter-spacing: -.025em; white-space: nowrap; }
.large-number { font-size: clamp(44px, 4.5vw, 61px); }
.large-number span { font-size: 20px; font-weight: 600; margin-left: 7px; letter-spacing: 0; }
.income-number { font-size: clamp(30px, 3.65vw, 48px); padding-top: 10px; }
.income-number span { font-size: 17px; margin-left: 5px; letter-spacing: 0; }
.income-number.long { font-size: clamp(23px, 2.8vw, 36px); }
.income-number.negative { color: var(--negative); }
.result-detail { font-size: 12px; margin-top: 8px; }
.income-result .result-detail { color: var(--muted); }
.income-equation { margin-top: 20px; padding: 17px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px; }
.income-equation > div { display: flex; flex-direction: column; gap: 3px; }
.income-equation > div > span { font-size: 11px; color: var(--muted); }
.income-equation strong { font-size: 18px; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.equation-symbol { font-size: 16px; color: #818a92; padding: 0 2px; }
.result-note { margin-top: 10px; color: var(--muted); font-size: 11px; }
.fee-scope { margin-top: 5px; color: var(--muted); font-size: 11px; }
.overtime-comparison { margin-top: 20px; padding: 20px 22px 18px; background: var(--paper); border: 1px solid var(--line); border-radius: 10px; }
.overtime-heading { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.overtime-heading h3 { font-size: 14px; font-weight: 600; }
.overtime-heading > span { font-size: 11px; color: var(--muted); white-space: nowrap; }
.overtime-numbers { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: 24px; margin: 13px 0 10px; }
.overtime-numbers > div { display: flex; flex-direction: column; align-items: flex-start; }
.overtime-numbers > div > span { font-size: 12px; color: var(--muted); }
.overtime-numbers strong { font-size: 42px; line-height: 1.3; font-variant-numeric: tabular-nums; letter-spacing: -.015em; }
.overtime-numbers strong.long { font-size: 32px; }
.overtime-numbers strong small { margin-left: 7px; font-size: 14px; font-weight: 400; }
.overtime-numbers > div:last-child strong { color: var(--green); }
.change-arrow { font-size: 24px; color: #919aa1; }
.office-overtime { font-size: 12px; color: var(--muted); line-height: 1.8; }
.time-track { display: flex; height: 10px; overflow: hidden; background: #edf0f2; margin-top: 16px; border-radius: 3px; }
.time-track > span { display: block; height: 100%; }
#allocation-overtime, .legend-overtime { background: var(--green); }
#allocation-intake, .legend-intake { background: var(--yellow); }
#allocation-reserve, .legend-reserve { background: #d2d8de; }
.time-legend { display: flex; flex-wrap: wrap; gap: 5px 14px; font-size: 11px; margin-top: 8px; }
.time-legend > span { display: inline-flex; align-items: center; gap: 5px; color: var(--muted); }
.time-legend i { display: inline-block; width: 8px; height: 8px; border-radius: 1px; }
.time-legend strong { font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.model-alerts { display: grid; gap: 8px; margin-top: 12px; }
.model-alerts:empty { display: none; }
.model-alerts p { padding: 10px 13px; border-left: 3px solid var(--orange); background: #fff4e9; color: #68422c; font-size: 12px; }
.timeline-panel { padding: 24px 22px 14px; margin-top: 24px; background: var(--paper); border: 1px solid var(--line); border-radius: 10px; }
.timeline-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.timeline-heading h3 { font-size: 15px; font-weight: 600; }
.chart-tabs { display: flex; align-items: center; border: 1px solid var(--line); border-radius: 6px; padding: 2px; flex-shrink: 0; }
.chart-tabs button { border: 0; background: none; padding: 6px 9px; font-size: 11px; border-radius: 4px; }
.chart-tabs button[aria-pressed="true"] { background: #e8edf1; font-weight: 600; }
.chart-description { font-size: 12px; color: var(--muted); margin-top: 10px; min-height: 20px; }
.chart { width: 100%; height: 240px; margin-top: 12px; }
.chart svg { display: block; overflow: visible; font-family: inherit; }
.outlook-strip { display: grid; grid-template-columns: 1fr 1.35fr; padding: 19px 0 12px; gap: 22px; }
.outlook-strip > div { display: flex; flex-direction: column; align-items: flex-start; }
.outlook-strip span, .outlook-strip small { font-size: 11px; color: var(--muted); }
.outlook-strip strong { font-size: 19px; font-variant-numeric: tabular-nums; font-weight: 600; margin: 2px 0; }
.month-details { border-top: 1px solid var(--line); margin-top: 10px; }
.month-details > summary { padding: 18px 0; list-style: none; display: flex; justify-content: space-between; font-size: 14px; font-weight: 600; gap: 12px; }
.table-scroll { overflow-x: auto; }
.month-table { width: 100%; border-collapse: collapse; font-size: 12px; font-variant-numeric: tabular-nums; }
.month-table caption { text-align: left; font-size: 11px; color: var(--muted); margin: 0 0 12px; }
.month-table th { background: #e9eef2; font-size: 11px; font-weight: 600; color: #505a62; }
.month-table th, .month-table td { padding: 11px 8px; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; }
.month-table th:first-child, .month-table td:first-child { text-align: left; }
.month-table tfoot { font-weight: 700; }
.month-table .negative { color: var(--negative); }
.table-footer { margin: 15px 0 20px; display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.table-footer p { font-size: 11px; color: var(--muted); }
.table-footer button { font-size: 12px; }
.explanation { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 28px; padding-top: 44px; margin-top: 40px; border-top: 1px solid var(--line); }
.explanation-intro h2 { font-size: 22px; line-height: 1.7; }
.explanation-intro > p { margin-top: 14px; font-size: 12px; color: var(--muted); line-height: 1.9; }
.explanation-body details { border-top: 1px solid var(--line); }
.explanation-body details:last-child { border-bottom: 1px solid var(--line); }
.explanation-body summary { padding: 16px 0; font-size: 14px; font-weight: 600; }
.details-content { padding: 0 0 22px; }
.details-content p { font-size: 12px; line-height: 1.95; color: #56616a; margin-top: 12px; }
.details-content p:first-child { margin-top: 0; }
.details-content ol { padding-left: 20px; font-size: 12px; line-height: 1.8; }
.details-content li { margin-top: 13px; }
.details-content li span { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; }
.site-footer { padding: 35px 0 28px; margin-top: 35px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 15px; color: var(--muted); font-size: 11px; }
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); padding: 12px 20px; max-width: calc(100% - 32px); background: var(--ink); color: var(--paper); box-shadow: 0 4px 15px #0002; border-radius: 8px; z-index: 5; font-size: 13px; }
.invalid-result { border-left: 3px solid var(--negative); padding: 24px; background: var(--paper); }
.invalid-result h2 { font-size: 18px; }
.invalid-result p { font-size: 14px; margin-top: 10px; }
.skip-link { position: absolute; top: -80px; left: 10px; padding: 10px 18px; z-index: 10; background: var(--paper); }
.skip-link:focus { top: 10px; }
.no-script { padding: 20px; color: var(--negative); background: var(--paper); }
@media (max-width: 1050px) {
  .header-inner, .page-shell { padding-left: 24px; padding-right: 24px; }
  .calculator-layout, .explanation { grid-template-columns: 300px minmax(0, 1fr); gap: 24px; }
  .main-results { grid-template-columns: 1fr; gap: 4px; }
  .client-result { padding: 18px 22px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 0 15px; }
  .client-result h3 { align-self: end; }
  .client-result .large-number { grid-column: 2; grid-row: 1 / 3; font-size: 46px; }
  .client-result .result-detail { margin-top: 2px; }
  .income-result { padding: 17px 0 5px; }
  .income-number { padding: 0; font-size: 42px; }
  .income-equation { gap: 5px; }
  .income-equation strong { font-size: 16px; }
  .timeline-panel { padding: 20px 16px 12px; }
  .timeline-heading { align-items: flex-start; flex-direction: column; gap: 10px; }
  .outlook-strip { grid-template-columns: 1fr; gap: 10px; }
  .time-stamp { flex-basis: 150px; }
}
@media (max-width: 760px) {
  .header-inner { min-height: 72px; padding: 13px 18px; gap: 10px; }
  .brand-logo { width: 139px; }
  .header-actions { gap: 2px; }
  .header-actions .button { font-size: 11px; min-height: 38px; padding: 7px 9px; }
  .page-shell { padding: 0 18px; }
  .introduction { padding: 29px 0 26px; align-items: flex-start; }
  .intro-label { font-size: 11px; margin-bottom: 9px; }
  .intro-description { font-size: 13px; margin-top: 13px; }
  .time-stamp { display: none; }
  .desktop-break { display: none; }
  .calculator-layout, .explanation { grid-template-columns: minmax(0, 1fr); gap: 25px; }
  .input-panel { padding: 21px 21px 0; }
  .panel-heading h2, .result-heading h2 { font-size: 17px; }
  .panel-description { font-size: 12px; }
  .main-field { margin-top: 20px; }
  .stepper { min-height: 58px; }
  .stepper > button { flex-basis: 48px; }
  .number-unit input { max-width: none; font-size: 29px; }
  .advanced-settings { margin: 0 -21px; }
  .advanced-settings > summary { padding: 16px 21px; }
  .field input, .field select { font-size: 16px; min-height: 46px; }
  .field-help, .advanced-intro { font-size: 12px; }
  .example-group { margin: 17px 0 21px; gap: 7px; }
  .example-group button { min-height: 38px; }
  .main-results { margin-top: 17px; grid-template-columns: 1fr; gap: 2px; }
  .overtime-comparison { padding: 17px 18px; }
  .overtime-heading h3 { font-size: 13px; }
  .overtime-numbers { gap: 20px; }
  .overtime-numbers strong { font-size: 39px; }
  .overtime-numbers strong.long { font-size: 28px; }
  .time-legend { gap: 4px 10px; }
  .client-result .large-number { font-size: 48px; }
  .income-result { padding-top: 19px; }
  .income-number { font-size: 43px; }
  .income-equation { margin-top: 16px; }
  .income-equation strong { font-size: 16px; }
  .income-equation > div > span { font-size: 11px; }
  .timeline-heading { flex-direction: row; align-items: center; gap: 10px; }
  .timeline-heading h3 { font-size: 14px; }
  .timeline-panel { padding: 18px 13px 10px; margin-top: 23px; }
  .chart-tabs button { min-height: 38px; padding: 6px 8px; }
  .chart { height: 225px; }
  .outlook-strip { grid-template-columns: 1fr 1.5fr; gap: 12px; }
  .outlook-strip strong { font-size: 18px; }
  .outlook-strip small { font-size: 11px; }
  .explanation { margin-top: 24px; padding-top: 28px; gap: 22px; }
  .explanation-intro h2 { font-size: 20px; }
  .explanation-intro h2 br { display: none; }
  .explanation-intro > p { margin-top: 9px; }
  .explanation-body summary { font-size: 13px; }
  .site-footer { flex-direction: column; gap: 8px; margin-top: 25px; padding-top: 22px; }
}
@media (max-width: 370px) {
  .overtime-numbers { gap: 12px; }
  .overtime-numbers strong { font-size: 34px; }
  .overtime-numbers strong.long { font-size: 22px; }
  .overtime-numbers strong small { font-size: 12px; margin-left: 4px; }
  .mobile-break { display: initial; }
  .header-inner { padding-left: 12px; padding-right: 12px; }
  .brand-logo { width: 126px; }
  .page-shell { padding-left: 14px; padding-right: 14px; }
  .timeline-heading { flex-direction: column; align-items: flex-start; }
  .income-equation strong { font-size: 14px; }
  .income-number { font-size: 36px; }
  .result-heading { flex-wrap: wrap; gap: 7px; }
  .outlook-strip { grid-template-columns: 1fr; }
}
@media print {
  @page { size: A4; margin: 12mm; }
  body { background: white; font-size: 10px; }
  .header-inner, .page-shell { max-width: none; padding: 0; }
  .site-header { border-bottom: 1px solid #bbb; }
  .header-inner { min-height: 55px; }
  .brand-logo { width: 130px; }
  .header-actions, .stepper button, .example-group, .text-button, .chart-tabs, .table-footer button, .toast, .skip-link { display: none !important; }
  .introduction { padding: 18px 0; }
  h1 { font-size: 23px; }
  .intro-description { font-size: 11px; }
  .time-stamp { display: none; }
  .calculator-layout, .explanation { display: block; }
  .input-panel { padding: 12px 16px; margin-bottom: 18px; }
  #scenario-form { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; }
  .panel-heading, .panel-description { grid-column: 1 / -1; }
  .main-field { margin-top: 10px; }
  .stepper { min-height: 40px; }
  .number-unit input { font-size: 22px; }
  .advanced-settings { display: none; }
  .main-results { grid-template-columns: 1fr 1.4fr; }
  .client-result { display: block; }
  .client-result, .income-result { padding: 14px 18px; }
  .income-number { font-size: 34px; }
  .large-number { font-size: 44px; }
  .client-result, .month-table th { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .timeline-panel, .main-results, .income-equation, .outlook-strip, .overtime-comparison { break-inside: avoid; }
  .chart { height: 210px; }
  .outlook-strip { display: grid; grid-template-columns: 1fr 1.4fr; }
  .table-scroll { overflow: visible; }
  .month-table { font-size: 9px; }
  .month-table th, .month-table td { padding: 6px 5px; }
  .month-details { break-before: auto; }
  .explanation { padding-top: 18px; margin-top: 18px; }
  .explanation-intro h2 { font-size: 16px; }
  .explanation-intro h2 br { display: none; }
  .explanation-body { margin-top: 12px; }
  .explanation-body details > summary { font-size: 12px; }
  .details-content p { font-size: 10px; }
  .details-content li { font-size: 10px; }
}