:root {
      font-size: 100%;
      --ink: #1f1f1f;
      --muted: #666;
      --line: #aaa;
      --line-soft: #d5d5d5;
      --surface: #fff;
      --surface-soft: #f1f1f1;
      --surface-strong: #ddd;
      --page: #e8e8e8;
      --focus: #000;
    }

    * { box-sizing: border-box; }
    html { font-family: Arial, "Noto Sans JP", sans-serif; color: var(--ink); background: var(--page); }
    body { margin: 0; }
    button, input, select, textarea { font: inherit; color: inherit; }
    a { color: inherit; }
    :focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

    .front-toolbar {
      position: sticky;
      top: 0;
      z-index: 20;
      border-bottom: 2px solid var(--ink);
      background: var(--surface);
      padding: 12px 16px;
    }

    .front-toolbar__inner {
      width: min(1120px, 100%);
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .front-label { margin: 0; font-size: 1rem; font-weight: 700; }
    .front-note { margin: 3px 0 0; color: var(--muted); font-size: .875rem; }
    .front-nav { display: flex; flex-wrap: wrap; gap: 6px; }
    .front-nav a {
      min-height: 40px;
      display: inline-flex;
      align-items: center;
      padding: 7px 10px;
      border: 1px solid var(--line);
      background: var(--surface);
      text-decoration: none;
      font-size: .875rem;
      font-weight: 700;
    }
    .front-nav a[aria-current="page"] { background: var(--ink); color: var(--surface); border-color: var(--ink); }

    .workspace { padding: 28px 16px 72px; }
    .route-screen { display: none; }
    .route-screen.is-active { display: block; }
    .frame {
      width: min(1120px, 100%);
      margin: 0 auto;
      background: var(--surface);
      border: 2px solid var(--ink);
      min-height: 720px;
    }

    .app-header {
      padding: 22px 24px;
      border-bottom: 1px solid var(--line);
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 18px;
    }
    .brand { margin: 0 0 4px; font-size: .875rem; font-weight: 700; letter-spacing: .08em; }
    .app-header h1 { margin: 0; font-size: 1.75rem; line-height: 1.3; }
    .header-meta { color: var(--muted); font-size: .875rem; text-align: right; line-height: 1.6; }

    .flow-layout { min-height: 620px; }
    .flow-side { border-bottom: 1px solid var(--line); background: var(--surface-soft); padding: 24px; }
    .flow-main { padding: 28px; }
    .step-label { margin: 0 0 8px; font-size: 1.125rem; font-weight: 700; }
    .progress-track { height: 10px; border: 1px solid var(--ink); background: var(--surface); margin-bottom: 24px; }
    .progress-fill { display: block; width: 43%; height: 100%; background: var(--ink); }

    .summary-title, .section-kicker { margin: 0 0 10px; font-size: 1rem; font-weight: 700; }
    .selection-summary { margin: 0; border-top: 1px solid var(--line); }
    .selection-summary div { padding: 12px 0; border-bottom: 1px solid var(--line-soft); }
    .selection-summary dt { color: var(--muted); font-size: 1rem; }
    .selection-summary dd { margin: 4px 0 0; font-size: 1rem; font-weight: 700; }

    .decision-title { margin: 0; font-size: 1.75rem; line-height: 1.3; }
    .decision-lead { margin: 9px 0 24px; font-size: 1rem; color: var(--muted); line-height: 1.5; }
    .choice-list { display: grid; gap: 10px; }
    .choice {
      min-height: 76px;
      display: grid;
      grid-template-columns: 24px minmax(0, 1fr) auto;
      align-items: center;
      gap: 12px;
      padding: 14px 16px;
      border: 1px solid var(--line);
      background: var(--surface);
    }
    .choice input { width: 20px; height: 20px; margin: 0; }
    .choice strong { display: block; font-size: 1rem; }
    .choice small { display: block; margin-top: 4px; color: var(--muted); font-size: .875rem; line-height: 1.5; }
    .choice-price { font-size: 1rem; font-weight: 700; white-space: nowrap; }

    .action-row { display: flex; justify-content: space-between; gap: 12px; margin-top: 24px; }
    .button {
      min-height: 56px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 2px solid var(--ink);
      padding: 12px 22px;
      background: var(--surface);
      font-size: 1rem;
      font-weight: 700;
      text-decoration: none;
    }
    .button--primary { background: var(--ink); color: var(--surface); }
    .button--full { width: 100%; }

    .state-samples { margin-top: 30px; border-top: 1px dashed var(--line); padding-top: 18px; }
    .state-samples h2 { margin: 0 0 10px; font-size: 1.375rem; line-height: 1.3; }
    .state-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .state-box { min-height: 92px; border: 1px dashed var(--line); padding: 12px; font-size: 1rem; line-height: 1.5; }
    .state-box strong { display: block; margin-bottom: 4px; font-size: 1.125rem; }
    .state-link { min-height: 44px; border: 0; padding: 0; background: transparent; text-decoration: underline; font: inherit; font-weight: 700; cursor: pointer; }

    .admin-main { padding: 24px 24px 88px; }
    .route-screen[data-view="admin"] .frame,
    .route-screen[data-view="admin-payments"] .frame { width: min(960px, 100%); }
    .admin-section { margin-bottom: 26px; }
    .admin-section h2 { margin: 0 0 12px; font-size: 1.375rem; line-height: 1.3; }
    .admin-section__lead { margin: -4px 0 12px; color: var(--muted); font-size: 1rem; line-height: 1.5; }
    .attention-grid, .metric-grid, .link-grid { display: grid; gap: 12px; }
    .attention-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .metric-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .link-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .panel { border: 1px solid var(--line); padding: 18px; background: var(--surface); }
    .panel--strong { border: 2px solid var(--ink); }
    .panel-label { display: block; color: var(--muted); font-size: 1.125rem; }
    .panel-value { display: block; margin-top: 8px; font-size: 1.75rem; font-weight: 700; }
    .panel-action { min-height: 44px; display: inline-flex; align-items: center; margin-top: 6px; font-size: 1rem; font-weight: 700; text-decoration: underline; }
    .member-line { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
    .member-line strong { font-size: 1.75rem; }
    .link-card { min-height: 92px; display: flex; flex-direction: column; justify-content: space-between; color: inherit; text-decoration: none; }
    .link-card strong { font-size: 1rem; }
    .link-card span { color: var(--muted); font-size: .875rem; }
    .recon-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .provider-card { border: 2px solid var(--ink); padding: 18px; }
    .provider-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
    .provider-head h3 { margin: 0; font-size: 1.375rem; line-height: 1.3; }
    .provider-head p { margin: 4px 0 0; color: var(--muted); font-size: .875rem; }
    .badge { min-height: 44px; display: inline-flex; align-items: center; border: 1px solid var(--ink); padding: 3px 8px; font-size: 1.125rem; font-weight: 700; white-space: nowrap; }
    .badge--soft { border-color: var(--line); background: var(--surface-soft); }
    .status-stack { margin-top: 12px; border-top: 1px solid var(--line-soft); }
    .status-row { min-height: 48px; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px; border-bottom: 1px solid var(--line-soft); font-size: 1.125rem; }
    .status-row strong { font-size: 1.125rem; }
    .status-row span { color: var(--muted); text-align: right; }
    .provider-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
    .provider-metric { border: 1px solid var(--line-soft); padding: 10px; }
    .provider-metric span { display: block; color: var(--muted); font-size: 1.125rem; }
    .provider-metric strong { display: block; margin-top: 4px; font-size: 1.75rem; }
    .metric-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .notice { border: 1px dashed var(--ink); padding: 14px; font-size: 1rem; line-height: 1.5; }
    .upload-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
    .preview-summary { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; margin: 12px 0; }
    .preview-item { border: 1px solid var(--line); padding: 10px; }
    .preview-item span { display: block; color: var(--muted); font-size: 1.125rem; }
    .preview-item strong { display: block; margin-top: 4px; font-size: 1.75rem; }
    .result-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
    .tab-button { min-height: 44px; border: 1px solid var(--line); background: var(--surface); padding: 8px 12px; font-weight: 700; font-size: 1.125rem; }
    .tab-button[aria-selected="true"] { border: 2px solid var(--ink); }
    .result-list { display: grid; gap: 8px; }
    .result-row { display: grid; grid-template-columns: 1fr .8fr 1fr .8fr 1.2fr auto; align-items: center; gap: 10px; border: 1px solid var(--line); padding: 12px; font-size: 1rem; }
    .result-row span { min-width: 0; }
    .result-row strong { font-size: 1rem; }
    .row-action { min-height: 44px; border: 1px solid var(--ink); background: var(--surface); padding: 8px 10px; font-size: 1rem; font-weight: 700; }
    .history-list { display: grid; gap: 8px; }
    .history-row { display: grid; grid-template-columns: 1fr 1fr 1fr 1.4fr; gap: 10px; border-bottom: 1px solid var(--line); padding: 10px 0; font-size: .875rem; line-height: 1.5; }
    .admin-nav {
      position: sticky;
      bottom: 0;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-top: 2px solid var(--ink);
      background: var(--surface);
    }
    .admin-nav a { min-height: 58px; display: flex; align-items: center; justify-content: center; border-right: 1px solid var(--line); text-decoration: none; font-size: 1rem; font-weight: 700; }
    .admin-nav a:last-child { border-right: 0; }

    .form-page { width: min(720px, 100%); margin: 0 auto; padding: 30px 24px 64px; }
    .form-intro { border-bottom: 1px solid var(--line); padding-bottom: 20px; margin-bottom: 24px; }
    .form-intro h2 { margin: 0; font-size: 1.75rem; line-height: 1.3; }
    .form-intro p { margin: 8px 0 0; color: var(--muted); font-size: 1rem; line-height: 1.5; }
    .form-section { margin: 0 0 28px; }
    .form-section h3 { margin: 0 0 12px; font-size: 1.375rem; line-height: 1.3; }
    .panel-title { margin: 0 0 10px; font-size: 1.375rem; line-height: 1.3; }
    .form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
    .field { display: block; }
    .field--full { grid-column: 1 / -1; }
    .field-label { display: block; margin-bottom: 6px; font-size: 1rem; font-weight: 700; }
    .field-note { display: block; margin-top: 5px; color: var(--muted); font-size: .875rem; line-height: 1.5; }
    .input, .select, .textarea { width: 100%; min-height: 48px; border: 1px solid var(--line); background: var(--surface); padding: 10px 12px; }
    .textarea { min-height: 100px; resize: vertical; }
    .check-row { min-height: 44px; display: flex; align-items: flex-start; gap: 10px; padding: 10px 0; font-size: 1rem; line-height: 1.5; }
    .check-row input { width: 20px; height: 20px; flex: 0 0 auto; }
    .price-summary { border: 2px solid var(--ink); padding: 18px; display: flex; justify-content: space-between; gap: 16px; align-items: center; }
    .price-summary span { color: var(--muted); font-size: 1rem; }
    .price-summary strong { font-size: 1rem; }
    .process-list { margin: 12px 0 0; padding-left: 22px; line-height: 1.5; font-size: 1rem; }
    .completion-note { border: 1px dashed var(--line); padding: 16px; font-size: .875rem; line-height: 1.5; }

    @media (max-width: 720px) {
      .front-toolbar { position: static; padding: 10px; }
      .front-toolbar__inner { display: block; }
      .front-nav { margin-top: 10px; display: grid; grid-template-columns: repeat(3, 1fr); }
      .front-nav a { justify-content: center; padding: 6px; font-size: .875rem; }
      .workspace { padding: 10px 0 48px; }
      .frame { border-left: 0; border-right: 0; min-height: 680px; }
      .app-header { padding: 18px 16px; display: block; }
      .app-header h1 { font-size: 1.375rem; }
      .header-meta { margin-top: 8px; text-align: left; }
      .flow-layout { display: block; }
      .flow-side { border-right: 0; border-bottom: 1px solid var(--line); padding: 16px; }
      .flow-main { padding: 20px 16px 32px; }
      .selection-summary { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 12px; }
      .decision-title { font-size: 1.375rem; }
      .choice { grid-template-columns: 24px minmax(0, 1fr); }
      .choice-price { grid-column: 2; margin-top: 2px; }
      .action-row { display: grid; grid-template-columns: 1fr 1.4fr; }
      .button { padding: 10px 12px; }
      .state-grid { grid-template-columns: 1fr; }
      .admin-main { padding: 18px 16px 76px; }
      .attention-grid, .metric-grid, .link-grid, .recon-grid, .upload-grid { grid-template-columns: 1fr; }
      .metric-grid { grid-template-columns: repeat(2, 1fr); }
      .metric-grid .panel:last-child { grid-column: 1 / -1; }
      .metric-grid--two { grid-template-columns: 1fr; }
      .metric-grid--two .panel:last-child { grid-column: auto; }
      .panel { padding: 16px; }
      .panel-value { font-size: 1.75rem; }
      .provider-head { display: block; }
      .provider-head .badge { margin-top: 8px; }
      .provider-metrics { grid-template-columns: repeat(3, 1fr); }
      .preview-summary { grid-template-columns: repeat(2, 1fr); }
      .preview-item:last-child { grid-column: 1 / -1; }
      .result-row { grid-template-columns: 1fr; gap: 5px; }
      .result-row .row-action { margin-top: 6px; width: 100%; }
      .history-row { grid-template-columns: 1fr 1fr; }
      .admin-nav a { min-height: 60px; font-size: .875rem; }
      .form-page { padding: 22px 16px 56px; }
      .form-intro h2 { font-size: 1.375rem; }
      .form-grid { grid-template-columns: 1fr; gap: 14px; }
      .field--full { grid-column: auto; }
      .price-summary { display: block; }
      .price-summary strong { display: block; margin-top: 8px; }
    }
  
.frame { line-height: 1.5; }