:root {
        color-scheme: light;
        --surface: #f8fafc;
        --card: #ffffff;
        --border: #dce4f0;
        --accent: #2563eb;
        --accent-soft: rgba(37, 99, 235, 0.08);
        --accent-strong: #1d4ed8;
        --text: #0f172a;
        --text-muted: #475569;
      }

      *,
      *::before,
      *::after {
        box-sizing: border-box;
      }

      body {
        margin: 0;
        font-family: "Inter", "Hiragino Sans", "Noto Sans JP", system-ui,
          -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        background: var(--surface);
        color: var(--text);
        line-height: 1.6;
      }

      .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
      }

      header {
        padding: 8px clamp(16px, 4vw, 12px);
        background: var(--card);
        border-bottom: 1px solid var(--border);
      }

      header h1 {
        margin: 0;
        font-size: clamp(24px, 3vw, 32px);
        font-weight: 600;
        letter-spacing: 0.03em;
      }

      header p {
        margin: 10px 0 0;
        color: var(--text-muted);
        font-size: 14px;
      }

      main {
        padding: clamp(16px, 4vw, 48px);
        display: grid;
        gap: clamp(20px, 4vw, 32px);
        max-width: 1200px;
        margin: 0 auto;
      }

      .dashboard-nav {
        display: inline-flex;
        gap: 12px;
        padding: 8px;
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: 999px;
        box-shadow: 0 8px 24px -18px rgba(15, 23, 42, 0.25);
        width: fit-content;
      }

      .dashboard-tab {
        border: none;
        background: transparent;
        color: var(--text-muted);
        font: inherit;
        font-weight: 600;
        padding: 8px 20px;
        border-radius: 999px;
        cursor: pointer;
        transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
      }

      .dashboard-tab:hover,
      .dashboard-tab:focus-visible {
        background: rgba(37, 99, 235, 0.12);
        color: var(--accent-strong);
        outline: none;
      }

      .dashboard-tab.is-active {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 12px 24px -18px rgba(37, 99, 235, 0.6);
      }

      @media (max-width: 640px) {
        .dashboard-nav {
          display: flex;
          flex-wrap: wrap;
          justify-content: center;
          gap: 8px;
          width: 100%;
        }
        .dashboard-tab {
          flex: 1 1 calc(50% - 8px);
          min-width: 140px;
          text-align: center;
        }
      }

      .dashboard-view {
        display: none;
        gap: clamp(20px, 4vw, 32px);
      }

      .dashboard-view.is-active {
        display: grid;
      }

      .summary-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
        gap: 16px;
      }

      .summary-item {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: 16px;
        padding: 20px;
        display: flex;
        flex-direction: column;
        gap: 8px;
        box-shadow: 0 12px 34px -24px rgba(15, 23, 42, 0.25);
      }

      .summary-item span {
        color: var(--text-muted);
        font-size: 12px;
        letter-spacing: 0.05em;
        text-transform: uppercase;
      }

      .summary-item strong {
        font-size: 26px;
        font-weight: 600;
        color: var(--accent-strong);
      }

      .summary-item small {
        font-size: 12px;
        color: var(--text-muted);
      }

      .card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: 18px;
        padding: clamp(18px, 3vw, 28px);
        box-shadow: 0 16px 40px -28px rgba(15, 23, 42, 0.28);
      }

      .card h2 {
        margin: 0 0 12px;
        font-size: 18px;
        font-weight: 600;
        color: var(--text);
      }

      .card p.description {
        margin: 0 0 20px;
        color: var(--text-muted);
        font-size: 14px;
      }

      .help-text {
        margin: 8px 0 0;
        font-size: 12px;
        color: var(--text-muted);
      }

      .summary-board {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
        gap: 16px;
      }

      .summary-board-card {
        border: 1px solid rgba(37, 99, 235, 0.2);
        border-radius: 18px;
        padding: 16px;
        background: rgba(37, 99, 235, 0.08);
        display: flex;
        flex-direction: column;
        gap: 6px;
        box-shadow: 0 12px 32px -22px rgba(37, 99, 235, 0.35);
      }

      .summary-board-highlight {
        background: #fff;
        border-radius: 14px;
        padding: 10px 12px 8px;
        display: flex;
        flex-direction: column;
        gap: 4px;
        align-items: flex-end;
        box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.1);
      }

      .summary-board-card h3 {
        margin: 0;
        font-size: 15px;
        font-weight: 600;
        color: var(--text);
        align-self: stretch;
        text-align: left;
      }

      .summary-board-gap {
        font-size: 32px;
        font-weight: 700;
        color: var(--accent-strong);
        text-align: right;
        font-variant-numeric: tabular-nums;
      }

      .summary-board-gap span {
        font-size: 16px;
        margin-left: 4px;
        color: var(--text-muted);
        font-weight: 500;
      }

      .summary-board-meta {
        margin: 0;
        font-size: 12px;
        color: var(--text-muted);
      }

      .optimization-chart {
        min-height: 600px;
        margin-bottom: 0;
      }

      .optimization-search-form {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 12px;
        margin-bottom: 16px;
      }

      .optimization-search-group {
        display: flex;
        flex-direction: column;
        gap: 6px;
      }

      .optimization-search-label {
        font-size: 13px;
        font-weight: 600;
        color: var(--text-muted);
      }

      .optimization-scope-options {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
      }

      .optimization-scope-options label {
        position: relative;
        cursor: pointer;
      }

      .optimization-scope-options input {
        position: absolute;
        opacity: 0;
        pointer-events: none;
      }

      .optimization-scope-options label span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 12px;
        border-radius: 999px;
        border: 1px solid var(--border);
        background: #fff;
        font-size: 13px;
        color: var(--text-muted);
        transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease,
          box-shadow 0.2s ease;
      }

      .optimization-scope-options label span::before {
        content: "";
        width: 10px;
        height: 10px;
        border-radius: 50%;
        border: 2px solid var(--border);
      }

      .optimization-scope-options input:checked + span {
        border-color: var(--accent);
        background: rgba(37, 99, 235, 0.08);
        color: var(--accent-strong);
        box-shadow: 0 4px 12px -6px rgba(37, 99, 235, 0.4);
        font-weight: 600;
      }

      .optimization-scope-options input:checked + span::before {
        border-color: var(--accent);
        background: var(--accent);
      }

      .optimization-search-group label {
        font-size: 13px;
        font-weight: 600;
        color: var(--text-muted);
      }

      .optimization-search-group input,
      .optimization-search-group select {
        font: inherit;
        padding: 10px 12px;
        border-radius: 10px;
        border: 1px solid var(--border);
        background: #fff;
      }

      .optimization-search-group input:focus,
      .optimization-search-group select:focus {
        outline: none;
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
      }

      .optimization-search-actions {
        display: flex;
        align-items: flex-end;
        gap: 8px;
        flex-wrap: wrap;
        justify-content: flex-end;
      }

      .optimization-search-row {
        cursor: pointer;
      }

      .optimization-search-row.is-active {
        background: rgba(37, 99, 235, 0.08);
      }

      .optimization-analysis-grid {
        display: grid;
        grid-template-columns: minmax(360px, 0.9fr) minmax(460px, 1.4fr);
        gap: 12px;
        margin-bottom: 16px;
        align-items: start;
      }

      .optimization-figure-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        margin-bottom: 12px;
        padding: 12px 20px;
        border-radius: 16px;
        background: rgba(37, 99, 235, 0.08);
        border: 1px solid rgba(37, 99, 235, 0.2);
      }

      .optimization-figure-header h3 {
        margin: 0;
        font-size: 20px;
        font-weight: 700;
        color: var(--accent-strong);
      }

      .optimization-figure-header .optimization-note {
        margin: 0;
        font-size: 14px;
        font-weight: 600;
        color: var(--accent-strong);
        background: #fff;
        padding: 6px 16px;
        border-radius: 999px;
        box-shadow: 0 4px 12px -6px rgba(37, 99, 235, 0.5);
      }

      .optimization-search-panel {
        margin-top: 24px;
        padding: 20px;
        border-radius: 16px;
        background: var(--surface);
        border: 1px dashed var(--border);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
        display: flex;
        flex-direction: column;
        gap: 12px;
      }

      .optimization-detail-table {
        max-height: none;
        overflow: visible;
        width: 100%;
      }

      .optimization-note {
        margin: 0 0 8px;
        font-size: 12px;
        color: var(--text-muted);
      }

      @media (max-width: 960px) {
        .optimization-analysis-grid {
          grid-template-columns: 1fr;
          gap: 16px;
        }
        .optimization-figure-header {
          flex-direction: column;
          align-items: flex-start;
        }
        .optimization-search-panel {
          padding: 16px;
        }
      }

      .party-metric-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
        gap: 16px;
      }

      .party-metric {
        background: rgba(37, 99, 235, 0.08);
        border-radius: 14px;
        padding: 14px 16px;
        display: flex;
        flex-direction: column;
        gap: 8px;
      }

      .win-rate-summary {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 16px;
      }

      .win-rate-summary-item {
        border: 1px solid rgba(37, 99, 235, 0.24);
        border-radius: 14px;
        padding: 16px;
        background: rgba(37, 99, 235, 0.08);
        display: flex;
        flex-direction: column;
        gap: 8px;
      }

      .win-rate-summary-item header {
        display: flex;
        justify-content: space-between;
        align-items: baseline;
        gap: 10px;
      }

      .win-rate-summary-item h3 {
        margin: 0;
        font-size: 14px;
        font-weight: 600;
        color: var(--text-muted);
      }

      .win-rate-summary-value {
        font-size: 26px;
        font-weight: 600;
        color: var(--accent-strong);
      }

.win-rate-summary-meta {
        margin: 0;
        font-size: 13px;
        color: var(--text-muted);
      }

      @media (max-width: 520px) {
        .summary-grid,
        .summary-board,
        .party-metric-grid {
          grid-template-columns: 1fr;
        }
        .summary-item,
        .summary-board-card,
        .party-metric {
          width: 100%;
        }
        .card {
          overflow-x: auto;
          -webkit-overflow-scrolling: touch;
        }
        .card::-webkit-scrollbar {
          display: none;
        }
      }

      .win-rate-search-block {
        margin-top: 24px;
        display: flex;
        flex-direction: column;
        gap: 16px;
      }

      .win-rate-controls {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        align-items: flex-end;
        margin-bottom: 16px;
      }

      .win-rate-controls label {
        font-weight: 600;
        color: var(--text);
      }

      .win-rate-controls .control-group {
        display: flex;
        gap: 8px;
        align-items: center;
      }

      .win-rate-controls input[type="number"] {
        width: 90px;
        padding: 6px 8px;
        border-radius: 8px;
        border: 1px solid var(--border);
      }

      .win-rate-controls button {
        border: none;
        background: var(--accent);
        color: #fff;
        border-radius: 8px;
        padding: 6px 14px;
        cursor: pointer;
        font-weight: 600;
      }

      .win-rate-controls .button-secondary {
        background: rgba(15, 23, 42, 0.08);
        color: var(--text);
      }

      .party-metric header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 10px;
        flex-wrap: wrap;
      }

      .party-metric header h3 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text);
      }

      .party-metric header strong {
        font-size: 24px;
        font-weight: 600;
        color: var(--accent-strong);
        display: inline-flex;
        align-items: baseline;
        gap: 4px;
      }

      .party-metric header strong .party-metric-current-label {
        font-size: 12px;
        color: var(--text-muted);
        font-weight: 500;
        margin-right: 6px;
        line-height: 1;
        letter-spacing: 0.02em;
      }

      .party-metric header strong span {
        font-size: 13px;
        color: var(--text-muted);
        font-weight: 500;
      }

      .party-metric header small {
        font-size: 12px;
        color: var(--text-muted);
        flex-basis: 100%;
        display: block;
        margin-top: 4px;
      }

      .party-metric-canvas {
        width: 100%;
        min-height: 140px;
        position: relative;
        overflow: hidden;
        border-radius: 10px;
      }

      @media (max-width: 720px) {
        .party-metric header {
          flex-direction: column;
          align-items: flex-start;
          gap: 8px;
        }
        .party-metric header small {
          flex-basis: auto;
        }
        .party-metric-canvas {
          min-height: 180px;
        }
      }

      .chart {
        width: 100%;
        min-height: 320px;
      }

      .compensation-chart {
        min-height: 360px;
      }

      .compensation-table-wrapper {
        overflow-x: auto;
        margin-top: 12px;
      }

      .compensation-error {
        margin-top: 12px;
        color: #dc2626;
        font-size: 14px;
      }

      .compensation-controls {
        display: flex;
        flex-direction: column;
        gap: 8px;
        margin: 12px 0 20px;
      }

      .compensation-controls label {
        font-weight: 600;
        color: var(--text);
      }

      .compensation-controls .control-group {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
      }

      .compensation-controls input[type="number"] {
        width: 90px;
        padding: 6px 8px;
        border-radius: 8px;
        border: 1px solid var(--border);
      }

      .compensation-controls .help-text {
        margin: 0;
        font-size: 12px;
        color: var(--text-muted);
      }

      .choropleth-card {
        display: grid;
        gap: 16px;
      }

      .choropleth-metric-tabs {
        display: inline-flex;
        gap: 8px;
        padding: 4px;
        background: rgba(148, 163, 184, 0.15);
        border-radius: 999px;
        width: fit-content;
        border: none;
        margin: 0;
      }

      .choropleth-metric-option {
        position: relative;
      }

      .choropleth-metric-option input {
        position: absolute;
        opacity: 0;
        pointer-events: none;
      }

      .choropleth-metric-tab {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: none;
        background: transparent;
        color: var(--text-muted);
        font: inherit;
        font-weight: 600;
        padding: 6px 16px;
        border-radius: 999px;
        cursor: pointer;
        transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
      }

      .choropleth-metric-option input:focus-visible + .choropleth-metric-tab,
      .choropleth-metric-tab:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
      }

      .choropleth-metric-option input:checked + .choropleth-metric-tab {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 10px 26px -18px rgba(37, 99, 235, 0.8);
      }

      .choropleth-controls {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 12px;
      }

      .choropleth-control-group {
        display: flex;
        flex-direction: column;
        gap: 12px;
        padding: 12px 16px;
        margin: 0;
        border-radius: 12px;
        border: 1px solid rgba(148, 163, 184, 0.35);
        background: rgba(148, 163, 184, 0.12);
        min-inline-size: 0;
      }

      .choropleth-control-group.is-hidden {
        display: none;
      }

      .choropleth-toggle {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        color: var(--text);
      }

      .choropleth-toggle input[type="checkbox"] {
        width: 16px;
        height: 16px;
      }

      .choropleth-control-group legend {
        padding: 0 6px;
        margin-left: -4px;
      }

      .choropleth-control-heading {
        font-weight: 600;
        color: var(--text);
      }

      .choropleth-party-control {
        width: 100%;
      }

      .choropleth-control {
        display: inline-flex;
        align-items: center;
        gap: 8px;
      }

      .choropleth-control-label {
        font-weight: 600;
        color: var(--text);
      }

      .choropleth-year-control {
        gap: 12px;
        flex-wrap: wrap;
      }

      .choropleth-year-slider {
        width: clamp(200px, 28vw, 320px);
        accent-color: var(--accent);
      }

      .choropleth-year-display {
        font-weight: 600;
        color: var(--accent-strong);
        min-width: 56px;
        text-align: right;
      }

      .choropleth-controls label {
        font-weight: 600;
        color: var(--text);
      }

      .choropleth-controls select {
        min-width: 200px;
        padding: 6px 10px;
        border-radius: 8px;
        border: 1px solid var(--border);
        font: inherit;
        background: var(--surface);
      }

      .choropleth-scope-options {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        border: none;
        margin: 0;
        padding: 0;
      }

      .choropleth-scope-option {
        position: relative;
      }

      .choropleth-scope-option input {
        position: absolute;
        opacity: 0;
        pointer-events: none;
      }

      .choropleth-scope-pill {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 6px 16px;
        border-radius: 999px;
        border: 1px solid var(--border);
        background: #fff;
        font-weight: 600;
        font-size: 14px;
        color: var(--text-muted);
        cursor: pointer;
        transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease,
          border-color 0.2s ease;
      }

      .choropleth-scope-pill:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
      }

      .choropleth-scope-option input:checked + .choropleth-scope-pill {
        background: var(--accent);
        color: #fff;
        border-color: var(--accent);
        box-shadow: 0 10px 26px -18px rgba(37, 99, 235, 0.7);
      }

      .choropleth-scope-option input:disabled + .choropleth-scope-pill {
        opacity: 0.45;
        cursor: not-allowed;
      }

      .choropleth-map-wrapper {
        position: relative;
        border-radius: 16px;
        overflow: hidden;
        background: #dbe6ff;
        min-height: clamp(360px, 52vw, 620px);
      }

      .choropleth-map {
        width: 100%;
        min-height: clamp(360px, 52vw, 620px);
      }

      .choropleth-legend {
        position: absolute;
        top: 16px;
        left: 16px;
        display: grid;
        gap: 12px;
        padding: 12px 16px;
        background: rgba(255, 255, 255, 0.95);
        border-radius: 12px;
        border: 1px solid rgba(148, 163, 184, 0.3);
        box-shadow: 0 12px 28px -18px rgba(15, 23, 42, 0.35);
        max-width: 220px;
        font-size: 13px;
      }

      .choropleth-legend-header {
        display: flex;
        flex-direction: column;
        gap: 2px;
        color: var(--text);
      }

      .choropleth-legend-header strong {
        font-size: 14px;
      }

      .choropleth-legend-header span {
        font-size: 12px;
        color: var(--text-muted);
      }

      .choropleth-legend-item {
        display: flex;
        align-items: center;
        gap: 10px;
      }

      .choropleth-legend-swatch {
        width: 18px;
        height: 18px;
        border-radius: 6px;
        border: 1px solid rgba(15, 23, 42, 0.12);
        flex-shrink: 0;
      }

      .choropleth-legend-label {
        font-size: 12px;
        color: var(--text-muted);
      }

      .choropleth-info {
        position: absolute;
        left: 50%;
        bottom: 18px;
        transform: translateX(-50%);
        padding: 10px 16px;
        border-radius: 999px;
        background: rgba(15, 23, 42, 0.72);
        color: #fff;
        font-size: 13px;
        backdrop-filter: blur(4px);
        box-shadow: 0 16px 32px -20px rgba(15, 23, 42, 0.65);
        pointer-events: none;
      }

      .choropleth-tooltip {
        position: absolute;
        pointer-events: none;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid rgba(148, 163, 184, 0.35);
        padding: 10px 12px;
        border-radius: 10px;
        box-shadow: 0 18px 38px -26px rgba(15, 23, 42, 0.55);
        display: grid;
        gap: 4px;
        font-size: 13px;
        color: var(--text);
      }

      .choropleth-tooltip strong {
        font-weight: 600;
        font-size: 14px;
      }

      .choropleth-tooltip span {
        color: var(--text-muted);
      }

      .choropleth-summary {
        margin: 0;
        font-size: 13px;
        color: var(--text-muted);
      }

      .choropleth-note {
        margin: 8px 0 0;
        font-size: 12px;
        color: var(--text-muted);
      }

      @media (max-width: 720px) {
        .choropleth-legend {
          position: static;
          width: 100%;
          max-width: none;
          border-radius: 12px;
          margin-top: 12px;
          background: rgba(255, 255, 255, 0.98);
        }
        .choropleth-controls {
          flex-direction: column;
          align-items: stretch;
        }
        .choropleth-control {
          width: 100%;
          flex-direction: column;
          align-items: flex-start;
          gap: 4px;
        }
        .choropleth-controls select {
          width: 100%;
          min-width: auto;
        }
        .choropleth-map-wrapper {
          min-height: clamp(360px, 65vh, 640px);
        }
        .choropleth-map {
          min-height: clamp(360px, 65vh, 640px);
        }
        .choropleth-info {
          position: static;
          transform: none;
          margin-top: 12px;
          text-align: center;
        }
      }

      footer {
        text-align: center;
        color: var(--text-muted);
        font-size: 12px;
        margin: 16px 0 32px;
      }