/* ── Page Wrapper ───────────────────────────────────────── */
    .page { display: none; padding: 28px; }
    .page.active { display: block; }

    /* ── Page Title Bar ─────────────────────────────────────── */
    .page-header {
      display: flex; align-items: flex-start;
      justify-content: space-between;
      margin-bottom: 24px;
    }
    .page-title { font-size: 20px; font-weight: 700; color: var(--pwc-dark); }
    .page-meta { font-size: 12px; color: var(--pwc-mid); margin-top: 3px; }
    .page-actions { display: flex; gap: 10px; align-items: center; }

    /* ── Layer Badge ────────────────────────────────────────── */
    .layer-badge {
      display: inline-flex; align-items: center;
      background: var(--pwc-orange); color: #fff;
      font-size: 10.5px; font-weight: 700;
      padding: 2px 9px; border-radius: 10px;
      margin-right: 6px;
    }

    /* ── KPI Grid ───────────────────────────────────────────── */
    /* ===== 新增：Layer 2 & Layer 3 專用版面樣式 ===== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.kpi-card {
  background: #fff;
  border: 1px solid var(--pwc-border);
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.kpi-title {
  font-size: 13px;
  color: var(--pwc-mid);
  font-weight: 600;
}
.kpi-value {
  font-size: 28px;
  color: var(--pwc-dark);
  font-family: monospace;
  font-weight: bold;
}
.kpi-trend {
  font-size: 12px;
  font-weight: bold;
}
.trend-up { color: #078A3C; } /* 綠色，對減碳是好事 */
.trend-down { color: #C00000; } /* 紅色 */

.report-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.report-block {
  background: #fff;
  border-radius: 8px;
  border-top: 4px solid var(--pwc-orange);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.report-block[data-color="blue"] { border-top-color: var(--blue); }
.report-block[data-color="green"] { border-top-color: var(--green); }
.report-block[data-color="purple"] { border-top-color: var(--purple); }

.report-block h3 {
  margin: 0 0 8px 0;
  font-size: 16px;
  color: var(--pwc-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}
.doc-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: #F8F9FA;
  border: 1px solid #E2E8F0;
  border-radius: 6px;
  color: var(--pwc-dark);
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  text-align: left;
}
.doc-btn:hover {
  background: #E6F0FA;
  border-color: var(--blue);
}
.doc-icon { font-size: 16px; }
/* ========================================= */
    .kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
    .kpi-card {
      background: #fff; border-radius: var(--radius);
      padding: 20px 20px 16px; box-shadow: var(--shadow-sm);
      border-top: 3px solid var(--pwc-border);
    }
    .kpi-card.c-green  { border-top-color: var(--green); }
    .kpi-card.c-orange { border-top-color: var(--pwc-orange); }
    .kpi-card.c-blue   { border-top-color: var(--blue); }
    .kpi-label { font-size: 11px; text-transform: uppercase; letter-spacing: .6px; color: var(--pwc-mid); margin-bottom: 8px; }
    .kpi-value { font-size: 28px; font-weight: 700; line-height: 1.1; color: var(--pwc-dark); }
    .kpi-unit  { font-size: 12px; font-weight: 400; color: var(--pwc-mid); margin-left: 3px; }
    .kpi-delta { margin-top: 9px; font-size: 12px; display: flex; align-items: center; gap: 4px; }
    .kpi-delta.up   { color: var(--green); }
    .kpi-delta.down { color: var(--red); }
    .kpi-footer { margin-top: 8px; font-size: 11px; color: var(--pwc-mid); border-top: 1px solid var(--pwc-border); padding-top: 8px; }

    /* ── IoT Sensor Panel ───────────────────────────────────── */
    .iot-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 24px; }
    .iot-card {
      background: #fff; border-radius: var(--radius);
      padding: 16px; box-shadow: var(--shadow-sm);
      border: 1px solid var(--pwc-border);
    }
    .iot-label {
      font-size: 11px; color: var(--pwc-mid); margin-bottom: 6px;
      display: flex; align-items: center; justify-content: space-between;
    }
    .pulse {
      width: 7px; height: 7px; border-radius: 50%;
      background: var(--green); display: inline-block;
      animation: blink 2s infinite;
    }
    @keyframes blink { 0%,100%{opacity:1} 50%{opacity:.25} }
    .iot-val { font-size: 22px; font-weight: 700; color: var(--pwc-dark); }
    .iot-unit{ font-size: 12px; color: var(--pwc-mid); margin-left: 2px; }
    .iot-foot {
      margin-top: 8px; padding-top: 6px;
      border-top: 1px solid var(--pwc-border);
      font-size: 10.5px; color: var(--pwc-mid);
    }
    .sparkline {
      height: 32px; margin-top: 8px;
      background: linear-gradient(90deg, #dff3e8 0%, #a8d9bc 50%, #dff3e8 100%);
      border-radius: 3px;
      display: flex; align-items: center; justify-content: center;
      font-size: 10px; color: var(--green);
    }

    /* ── Cards ──────────────────────────────────────────────── */
    .card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-sm); overflow: hidden; }
    .card-header {
      padding: 13px 20px; border-bottom: 1px solid var(--pwc-border);
      display: flex; align-items: center; justify-content: space-between;
    }
    .card-title { font-size: 13.5px; font-weight: 600; }
    .card-body  { padding: 16px 20px; }

    /* ── Charts ─────────────────────────────────────────────── */
    .chart-ph {
      background: var(--pwc-bg); border: 1px dashed var(--pwc-border);
      border-radius: var(--radius);
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      gap: 6px; color: var(--pwc-mid); font-size: 13px;
    }
    .chart-ph .ci { font-size: 28px; }
    .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

    /* ── Chips & Tags ───────────────────────────────────────── */
    /* P6: 語意層 — 形狀(::before)+ 色彩雙重編碼,符合 WCAG 2.1 AA */
    .chip {
      display: inline-flex; align-items: center; gap: 4px;
      padding: 2px 9px; border-radius: 10px; font-size: 11px; font-weight: 600;
    }
    /* 既有 class 名稱保留(向下相容)+ 各自帶語意形狀標 */
    .chip-locked  { background: var(--green-lt);  color: var(--green); }
    .chip-draft   { background: var(--amber-lt);  color: var(--amber); }
    .chip-auto    { background: var(--blue-lt);   color: var(--blue); }
    .chip-required{ background: var(--red-lt);    color: var(--red); }
    .chip-bpath   { background: var(--green-lt);  color: var(--green); }
    .chip-system  { background: #F0F0F0; color: #666; }
    .chip-purple  { background: var(--purple-lt); color: var(--purple); }
    /* 新語意 alias(go-forward),映射至既有色 */
    .chip-success { background: var(--green-lt);  color: var(--green); }
    .chip-success::before { content: "●"; font-size: 9px; color: var(--green); margin-right: 1px; }
    .chip-error,
    .chip-failed  { background: var(--red-lt);    color: var(--red); }
    .chip-error::before, .chip-failed::before { content: "✕"; font-weight: 800; margin-right: 1px; }
    .chip-warning { background: var(--amber-lt);  color: var(--amber); }
    .chip-warning::before { content: "▲"; font-size: 9px; margin-right: 1px; }
    .chip-pending { background: var(--amber-lt);  color: var(--amber); }
    .chip-pending::before { content: "⏳"; margin-right: 2px; }
    .chip-info    { background: var(--blue-lt);   color: var(--blue); }
    .chip-info::before { content: "ⓘ"; margin-right: 2px; }
    .chip-neutral { background: #F0F0F0; color: #666; }
    .chip-neutral::before { content: "○"; font-size: 9px; margin-right: 1px; }
    .tag {
      display: inline-block; padding: 2px 8px; border-radius: 3px; font-size: 11px; font-weight: 500;
    }
    .tag-green  { background: var(--green-lt);  color: var(--green); }
    .tag-blue   { background: var(--blue-lt);   color: var(--blue); }
    .tag-amber  { background: var(--amber-lt);  color: var(--amber); }
    .tag-orange { background: #FEF0E8; color: var(--pwc-orange); }
    .tag-gray   { background: #F0F0F0; color: #555; }
    .tag-purple { background: var(--purple-lt); color: var(--purple); }
    .iso-tag {
      display: inline-flex; align-items: center; gap: 3px;
      font-size: 11px; color: var(--blue); background: var(--blue-lt);
      padding: 2px 8px; border-radius: 3px; margin-right: 4px;
    }

    /* ── Tabs ───────────────────────────────────────────────── */
    .tab-bar {
      display: flex; border-bottom: 2px solid var(--pwc-border);
      margin-bottom: 20px;
    }
    .tab-btn {
      padding: 10px 22px; border: none; background: none;
      font-size: 13.5px; font-weight: 500; color: var(--pwc-mid);
      cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -2px;
      transition: color .12s;
    }
    .tab-btn:hover { color: var(--pwc-dark); }
    .tab-btn.active { color: var(--pwc-orange); border-bottom-color: var(--pwc-orange); }

    /* ── v1.2 方案 Y · 主檔管理分組 tab-bar ── */
    .md-grouped-tabs {
      flex-wrap: wrap;
      align-items: stretch;
      gap: 0;
      padding-top: 16px;
      position: relative;
    }
    .md-grouped-tabs .md-tab-group-label {
      display: inline-flex;
      align-items: center;
      padding: 0 8px 4px;
      font-size: 9.5px;
      font-weight: 700;
      letter-spacing: 0.08em;
      color: var(--pwc-mid);
      text-transform: uppercase;
      border-bottom: 2px solid transparent;
      margin-bottom: -2px;
      align-self: flex-end;
      white-space: nowrap;
    }
    .md-grouped-tabs .md-tab-group-label::before {
      content: '';
      width: 1px;
      height: 14px;
      background: var(--pwc-border);
      margin-right: 8px;
    }
    .md-grouped-tabs .md-tab-group-label[data-group="org"]::before { display: none; }
    /* 分組顏色微調 — group label 使用群組色，並加上左側 3px 色條圓點 */
    .md-grouped-tabs .md-tab-group-label::after {
      content: '';
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: currentColor;
      margin-left: 5px;
      opacity: 0.85;
    }
    .md-grouped-tabs .md-tab-group-label[data-group="org"]      { color: var(--pwc-dark); }
    .md-grouped-tabs .md-tab-group-label[data-group="engine"]   { color: #5B4ECC; }
    .md-grouped-tabs .md-tab-group-label[data-group="decl"]     { color: var(--pwc-orange); }
    .md-grouped-tabs .md-tab-group-label[data-group="finance"]  { color: var(--green); }
    .md-grouped-tabs .md-tab-group-label[data-group="biz"]      { color: var(--blue); }
    .md-grouped-tabs .tab-btn { padding: 10px 14px; font-size: 12.5px; position: relative; }
    /* 群組分隔：每個群組第一顆按鈕在下方 indicator 上加一道淡色條 */
    .md-grouped-tabs .tab-btn::after {
      content: '';
      position: absolute;
      left: 0; right: 0; bottom: -2px;
      height: 2px;
      background: transparent;
      pointer-events: none;
    }
    /* 各群組顏色：hover/active 文字顏色 + active 底線 */
    .md-grouped-tabs .tab-btn[data-group="engine"]:hover    { color: #5B4ECC; }
    .md-grouped-tabs .tab-btn[data-group="decl"]:hover      { color: var(--pwc-orange); }
    .md-grouped-tabs .tab-btn[data-group="finance"]:hover   { color: var(--green); }
    .md-grouped-tabs .tab-btn[data-group="biz"]:hover       { color: var(--blue); }
    .md-grouped-tabs .tab-btn[data-group="engine"].active   { color: #5B4ECC; border-bottom-color: #5B4ECC; }
    .md-grouped-tabs .tab-btn[data-group="decl"].active     { color: var(--pwc-orange); border-bottom-color: var(--pwc-orange); }
    .md-grouped-tabs .tab-btn[data-group="finance"].active  { color: var(--green); border-bottom-color: var(--green); }
    .md-grouped-tabs .tab-btn[data-group="biz"].active      { color: var(--blue); border-bottom-color: var(--blue); }
    /* 群組底色 hover：極淡色塊提示同一群組 */
    .md-grouped-tabs .tab-btn[data-group="engine"]:hover    { background: rgba(91,78,204,0.05); }
    .md-grouped-tabs .tab-btn[data-group="decl"]:hover      { background: rgba(208,74,2,0.05); }
    .md-grouped-tabs .tab-btn[data-group="finance"]:hover   { background: rgba(7,138,60,0.05); }
    .md-grouped-tabs .tab-btn[data-group="biz"]:hover       { background: rgba(0,102,204,0.05); }
    .md-grouped-tabs .tab-btn[data-group="org"]:hover       { background: rgba(45,45,45,0.04); }

    /* ──────────────────────────────────────────────────────────
       MODULE CARD — the universal scalable pattern
       Used for every data entry module in Tab B & C
    ──────────────────────────────────────────────────────────── */
    .module {
      background: #fff;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--pwc-border);
      margin-bottom: 20px;
      overflow: hidden;
    }

    /* Module: top header strip */
    .module-header {
      display: flex; align-items: center; gap: 12px;
      padding: 14px 20px;
      border-bottom: 1px solid var(--pwc-border);
      background: #FEFEFE;
    }
    .module-icon {
      width: 36px; height: 36px; border-radius: var(--radius);
      display: flex; align-items: center; justify-content: center;
      font-size: 18px; flex-shrink: 0;
    }
    .module-icon.green  { background: var(--green-lt); }
    .module-icon.orange { background: #FEF0E8; }
    .module-icon.blue   { background: var(--blue-lt); }
    .module-icon.purple { background: var(--purple-lt); }
    .module-name { font-size: 14px; font-weight: 600; color: var(--pwc-dark); }
    .module-desc { font-size: 11.5px; color: var(--pwc-mid); margin-top: 1px; }
    .module-header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

    /* Collapsible module pattern (P-4) */
    .module.collapsible .module-header { cursor: pointer; user-select: none; }
    .module.collapsible .module-header::after {
      content: "▾";
      margin-left: 6px;
      color: var(--pwc-mid);
      font-size: 12px;
      transition: transform .2s;
    }
    .module.collapsible.collapsed .module-header { border-bottom: none; }
    .module.collapsible.collapsed .module-header::after { transform: rotate(-90deg); }
    .module.collapsible.collapsed > *:not(.module-header) { display: none !important; }

    /* Module: record list table */
    .module-records { overflow-x: auto; }
    .rec-table { width: 100%; border-collapse: collapse; }
    .rec-table th {
      text-align: left; font-size: 10.5px; text-transform: uppercase;
      letter-spacing: .6px; color: var(--pwc-mid); font-weight: 600;
      padding: 9px 16px; background: var(--pwc-bg);
      border-bottom: 1px solid var(--pwc-border);
    }
    .rec-table td {
      padding: 12px 16px; border-bottom: 1px solid var(--pwc-border);
      font-size: 13px; vertical-align: middle;
    }
    .rec-table tr:last-child td { border-bottom: none; }
    .rec-table tr:hover td { background: #FAFAFA; }
    .rec-id { font-family: monospace; font-size: 12px; color: var(--pwc-mid); }
    .rec-main  { font-weight: 500; color: var(--pwc-dark); }
    .rec-sub   { font-size: 11px; color: var(--pwc-mid); margin-top: 1px; }
    .rec-actions { display: flex; gap: 6px; justify-content: flex-end; }

    /* Module: expandable form panel */
    .module-form {
      display: none;
      border-top: 2px solid var(--pwc-orange);
      background: var(--pwc-bg-form);
    }
    .module-form.open { display: block; }
    .form-panel-header {
      display: flex; align-items: center; justify-content: space-between;
      padding: 14px 20px 10px;
      border-bottom: 1px solid var(--pwc-border);
    }
    .form-panel-title { font-size: 13px; font-weight: 600; color: var(--pwc-orange); }
    .form-panel-body  { padding: 16px 20px; }

    /* Form sections (for scalable long forms) */
    .form-section { margin-bottom: 20px; }
    .form-section-title {
      font-size: 11px; text-transform: uppercase; letter-spacing: .7px;
      color: var(--pwc-mid); font-weight: 600;
      margin-bottom: 12px; padding-bottom: 6px;
      border-bottom: 1px solid var(--pwc-border);
    }
    .form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
    .form-grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 14px; }
    .form-group  { display: flex; flex-direction: column; gap: 5px; }
    .form-label  {
      font-size: 11.5px; font-weight: 600; color: var(--pwc-mid);
      text-transform: uppercase; letter-spacing: .4px;
    }
    .required-mark { color: var(--red); margin-left: 2px; }
    .form-input, .form-select, .form-textarea {
      width: 100%; border: 1px solid var(--pwc-border);
      border-radius: var(--radius); padding: 0 12px;
      font-size: 13.5px; color: var(--pwc-dark);
      background: #fff; outline: none;
      transition: border-color .12s, box-shadow .12s;
      font-family: inherit;
    }
    .form-input, .form-select { height: 38px; }
    .form-textarea { padding: 10px 12px; height: 80px; resize: vertical; }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--pwc-orange);
      box-shadow: 0 0 0 3px rgba(208,74,2,.08);
    }
    .form-input[readonly], .form-input:disabled {
      background: var(--pwc-bg); color: var(--pwc-mid); cursor: default;
    }
    .form-hint { font-size: 11px; color: var(--pwc-mid); margin-top: 3px; }

    /* Upload zone */
    .upload-zone {
      border: 1.5px dashed var(--pwc-border); border-radius: var(--radius);
      padding: 18px; text-align: center; cursor: pointer;
      color: var(--pwc-mid); font-size: 12.5px;
      transition: border-color .15s, background .15s;
      margin-top: 6px;
    }
    .upload-zone:hover { border-color: var(--pwc-orange); background: #FFF8F5; }
    .upload-zone .uz-icon { font-size: 22px; margin-bottom: 4px; display: block; }
    .upload-zone .uz-file {
      display: inline-flex; align-items: center; gap: 6px;
      background: var(--green-lt); color: var(--green);
      padding: 3px 10px; border-radius: 3px; font-size: 11.5px; margin-top: 6px;
    }

    /* Form footer */
    .form-panel-footer {
      display: flex; align-items: center; gap: 10px;
      padding: 12px 20px; border-top: 1px solid var(--pwc-border);
      background: #F9F9F9;
    }
    .form-panel-footer .audit-note {
      margin-left: auto; font-size: 11px; color: var(--pwc-mid);
      display: flex; align-items: center; gap: 5px;
    }

    /* DQR Table (embedded in forms) */
    .dqr-table { width: 100%; border-collapse: collapse; }
    .dqr-table th {
      text-align: left; font-size: 10.5px; text-transform: uppercase;
      letter-spacing: .5px; color: var(--pwc-mid); font-weight: 600;
      padding: 8px 12px; background: var(--pwc-bg);
      border-bottom: 1px solid var(--pwc-border);
    }
    .dqr-table td {
      padding: 8px 12px; border-bottom: 1px solid var(--pwc-border);
      font-size: 13px; vertical-align: middle;
    }
    .dqr-table tr:last-child td { border-bottom: none; }
    .dqr-dim { font-weight: 500; }
    .dqr-dim-sub { font-size: 10.5px; color: var(--pwc-mid); }
    .dqr-score {
      width: 60px; height: 32px; border: 1px solid var(--pwc-border);
      border-radius: var(--radius); text-align: center;
      font-size: 14px; font-weight: 600; color: var(--pwc-dark);
      background: #fff; outline: none;
    }
    .dqr-score:focus { border-color: var(--pwc-orange); }
    .dqr-notes { width: 100%; }

    /* Audit Banner */
    .audit-banner {
      background: var(--blue-lt);
      border: 1px solid #B8D8F7; border-left: 4px solid var(--blue);
      border-radius: var(--radius);
      padding: 11px 16px;
      font-size: 12px; color: #1A4A7A;
      display: flex; align-items: flex-start; gap: 10px;
      margin-top: 24px;
    }
    .audit-banner .ai { font-size: 16px; flex-shrink: 0; margin-top: 1px; }

    /* Buttons */
    .btn {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 8px 18px; border-radius: var(--radius);
      font-size: 13px; font-weight: 500; cursor: pointer;
      border: none; transition: opacity .15s;
      font-family: inherit;
    }
    .btn:hover { opacity: .85; }
    .btn-primary   { background: var(--pwc-orange); color: #fff; }
    .btn-green     { background: var(--green); color: #fff; }
    .btn-blue      { background: var(--blue);  color: #fff; }
    .btn-secondary { background: #fff; color: var(--pwc-dark); border: 1px solid var(--pwc-border); }
    .btn-ghost-orange { background: transparent; color: var(--pwc-orange); border: 1px solid var(--pwc-orange); }
    .btn-ghost-red    { background: transparent; color: var(--red); border: 1px solid var(--red); }
    .btn-sm   { padding: 5px 12px; font-size: 12px; }
    .btn-icon { padding: 6px; width: 32px; height: 32px; justify-content: center; background: #f5f5f5; color: var(--pwc-mid); }

    /* Alert inline */
    .alert-inline {
      display: flex; align-items: flex-start; gap: 10px;
      padding: 10px 14px; border-radius: var(--radius); font-size: 12.5px;
      margin-bottom: 14px;
    }
    .alert-inline.warn {
      background: var(--amber-lt);
      border-left: 3px solid var(--amber);
      color: #7A5500;
    }
    .alert-inline.danger {
      background: var(--red-lt);
      border-left: 3px solid var(--red);
      color: #900;
    }

    /* Divider */
    .divider { border: none; border-top: 1px solid var(--pwc-border); margin: 20px 0; }

    /* Spacing */
    .mb-16 { margin-bottom: 16px; }
    .mb-24 { margin-bottom: 24px; }
    .mt-16 { margin-top: 16px; }
    .section-header {
      display: flex; align-items: center; gap: 8px; margin-bottom: 14px;
    }
    .section-title { font-size: 14px; font-weight: 600; color: var(--pwc-dark); }
    .section-sub   { font-size: 11.5px; color: var(--pwc-mid); }

    /* ── Flow Bar (lifecycle steps) ───────────────────────── */
    .flow-bar {
      display: flex; align-items: center; gap: 0;
      background: #fff; border-radius: var(--radius);
      border: 1px solid var(--pwc-border);
      box-shadow: var(--shadow-sm);
      overflow: hidden; margin-bottom: 24px;
    }
    .flow-node {
      display: flex; align-items: center; gap: 8px;
      padding: 12px 18px; font-size: 12.5px;
      font-weight: 500; color: var(--pwc-mid);
      position: relative; flex: 1;
    }
    .flow-node::after {
      content: '▶';
      position: absolute; right: -8px; top: 50%; transform: translateY(-50%);
      font-size: 11px; color: var(--pwc-border); z-index: 1;
    }
    .flow-node:last-child::after { display: none; }
    .flow-node.done { color: var(--green); background: var(--green-lt); }
    .flow-node.active { color: var(--amber); background: var(--amber-lt); font-weight: 600; }
    .flow-node.locked { color: var(--blue); background: var(--blue-lt); }
    .fn-num {
      width: 22px; height: 22px; border-radius: 50%;
      background: var(--pwc-border); color: var(--pwc-mid);
      font-size: 11px; font-weight: 700;
      display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    }
    .flow-node.done .fn-num   { background: var(--green); color: #fff; }
    .flow-node.active .fn-num { background: var(--amber); color: #fff; }
    .flow-node.locked .fn-num { background: var(--blue);  color: #fff; }

    /* ── Path Card (calc management) ──────────────────────── */
    .path-card {
      background: #fff; border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm); border: 1px solid var(--pwc-border);
      overflow: hidden;
    }
    .path-card-header {
      padding: 14px 20px;
      display: flex; align-items: center; justify-content: space-between;
      border-bottom: 1px solid var(--pwc-border);
    }
    .path-card-header.path-a { background: linear-gradient(90deg, #FFF8F5 0%, #fff 100%); border-top: 3px solid var(--pwc-orange); }
    .path-card-header.path-b { background: linear-gradient(90deg, #F0F7FF 0%, #fff 100%); border-top: 3px solid var(--blue); }
    .path-label { font-size: 15px; font-weight: 700; color: var(--pwc-dark); }
    .path-sub   { font-size: 11.5px; color: var(--pwc-mid); margin-top: 2px; }
    .reads-from { display: flex; gap: 6px; align-items: center; font-size: 11px; }
    .reads-badge {
      padding: 2px 8px; border-radius: 3px; font-size: 10.5px; font-weight: 600;
    }
    .reads-a { background: #FEF0E8; color: var(--pwc-orange); }
    .reads-b { background: var(--green-lt); color: var(--green); }
    .reads-c { background: var(--purple-lt); color: var(--purple); }

    .calc-steps { padding: 12px 20px; border-bottom: 1px solid var(--pwc-border); }
    .calc-step {
      display: flex; align-items: baseline; gap: 10px;
      padding: 5px 0; font-size: 12.5px;
      border-bottom: 1px solid #F5F5F5;
    }
    .calc-step:last-child { border-bottom: none; }
    .step-num {
      width: 20px; height: 20px; border-radius: 50%;
      background: var(--pwc-bg); border: 1px solid var(--pwc-border);
      font-size: 10px; font-weight: 700; color: var(--pwc-mid);
      display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    }
    .step-name { font-weight: 500; color: var(--pwc-dark); }
    .step-note { font-size: 11px; color: var(--pwc-mid); margin-top: 1px; }
    .step-approx {
      font-size: 10.5px; background: var(--amber-lt); color: var(--amber);
      padding: 1px 6px; border-radius: 3px; margin-left: 4px;
    }

    /* ── Calculation Set ───────────────────────────────────── */
    .set-table { width: 100%; border-collapse: collapse; }
    .set-table th {
      text-align: left; font-size: 10.5px; text-transform: uppercase;
      letter-spacing: .6px; color: var(--pwc-mid); font-weight: 600;
      padding: 9px 16px; background: var(--pwc-bg);
      border-bottom: 1px solid var(--pwc-border);
    }
    .set-table td {
      padding: 12px 16px; border-bottom: 1px solid var(--pwc-border);
      font-size: 13px; vertical-align: middle;
    }
    .set-table tr:last-child td { border-bottom: none; }
    .set-id { font-family: monospace; font-weight: 700; font-size: 13px; }
    .set-info-box {
      background: var(--pwc-bg); border: 1px solid var(--pwc-border);
      border-radius: var(--radius); padding: 12px 16px; font-size: 12px; color: var(--pwc-mid);
    }

    /* ── Report Output ─────────────────────────────────────── */
    .report-group {
      background: #fff; border-radius: var(--radius-lg);
      border: 1px solid var(--pwc-border);
      box-shadow: var(--shadow-sm); overflow: hidden;
    }
    .report-group-header {
      padding: 12px 18px;
      border-bottom: 1px solid var(--pwc-border);
      display: flex; align-items: center; gap: 10px;
    }
    .report-item {
      display: flex; align-items: center; justify-content: space-between;
      padding: 11px 18px; border-bottom: 1px solid #F5F5F5;
      gap: 12px;
    }
    .report-item:last-child { border-bottom: none; }
    .report-item:hover { background: #FAFAFA; }
    .report-name { font-size: 13px; font-weight: 500; color: var(--pwc-dark); }
    .report-desc { font-size: 11px; color: var(--pwc-mid); margin-top: 1px; }
    .report-actions { display: flex; gap: 6px; flex-shrink: 0; }
    .report-unavail { opacity: .45; cursor: not-allowed; }

    .set-selector-bar {
      background: #fff; border: 1px solid var(--pwc-border);
      border-radius: var(--radius-lg); padding: 16px 20px;
      box-shadow: var(--shadow-sm); margin-bottom: 20px;
      display: flex; align-items: center; gap: 16px;
    }
    .set-sel-label { font-size: 12px; font-weight: 600; color: var(--pwc-mid); text-transform: uppercase; letter-spacing: .5px; }
    .set-sel-info {
      display: flex; gap: 8px; align-items: center;
      margin-left: 12px; font-size: 12.5px;
    }
    .gen-history-table { width: 100%; border-collapse: collapse; }
    .gen-history-table th {
      text-align: left; font-size: 10.5px; text-transform: uppercase;
      letter-spacing: .5px; color: var(--pwc-mid); font-weight: 600;
      padding: 9px 14px; background: var(--pwc-bg); border-bottom: 1px solid var(--pwc-border);
    }
    .gen-history-table td {
      padding: 11px 14px; border-bottom: 1px solid var(--pwc-border);
      font-size: 12.5px; vertical-align: middle;
    }
    .gen-history-table tr:last-child td { border-bottom: none; }

    /* ── Compliance ────────────────────────────────────────── */
    .compliance-section {
      background: #fff; border-radius: var(--radius-lg);
      border: 1px solid var(--pwc-border); box-shadow: var(--shadow-sm);
      overflow: hidden; margin-bottom: 20px;
    }
    .compliance-header {
      padding: 13px 20px; border-bottom: 1px solid var(--pwc-border);
      display: flex; align-items: center; gap: 10px; background: #FEFEFE;
    }
    .compliance-row {
      display: flex; align-items: center; justify-content: space-between;
      padding: 13px 20px; border-bottom: 1px solid #F0F0F0; gap: 16px;
    }
    .compliance-row:last-child { border-bottom: none; }
    .compliance-row:hover { background: #FAFAFA; }
    .comp-name { font-size: 13px; font-weight: 500; }
    .comp-desc { font-size: 11px; color: var(--pwc-mid); margin-top: 2px; }

    .zip-checklist { padding: 0 20px; }
    .zip-item {
      display: flex; align-items: center; gap: 12px;
      padding: 11px 0; border-bottom: 1px solid #F0F0F0; font-size: 13px;
    }
    .zip-item:last-child { border-bottom: none; }
    .zip-check { font-size: 16px; flex-shrink: 0; width: 24px; text-align: center; }
    .zip-item-name { flex: 1; }
    .zip-item-status { font-size: 11px; }

    /* ── Audit Log Table ───────────────────────────────────── */
    .audit-log-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
    .audit-log-table th {
      text-align: left; font-size: 10.5px; text-transform: uppercase;
      letter-spacing: .5px; color: var(--pwc-mid); font-weight: 600;
      padding: 9px 12px; background: var(--pwc-bg); border-bottom: 1px solid var(--pwc-border);
      position: sticky; top: 64px; z-index: 5;
    }
    .audit-log-table td {
      padding: 10px 12px; border-bottom: 1px solid #F0F0F0;
      vertical-align: top; word-break: break-all;
    }
    .audit-log-table tr:hover td { background: #FAFAFA; }
    .log-ts { font-family: monospace; font-size: 11.5px; white-space: nowrap; }
    .log-module { display: inline-block; padding: 1px 7px; border-radius: 3px; font-size: 10.5px; font-weight: 600; }
    .log-mod-data    { background: var(--green-lt); color: var(--green); }
    .log-mod-calc    { background: #FEF0E8; color: var(--pwc-orange); }
    .log-mod-report  { background: var(--blue-lt); color: var(--blue); }
    .log-mod-comp    { background: var(--purple-lt); color: var(--purple); }
    .log-action { font-weight: 500; color: var(--pwc-dark); }
    .log-old { color: var(--red); font-family: monospace; font-size: 11.5px; }
    .log-new { color: var(--green); font-family: monospace; font-size: 11.5px; }
    .filter-bar {
      background: #fff; border: 1px solid var(--pwc-border);
      border-radius: var(--radius); padding: 12px 16px;
      display: flex; gap: 10px; align-items: center;
      box-shadow: var(--shadow-sm); margin-bottom: 16px; flex-wrap: wrap;
    }
    .filter-select, .filter-input {
      height: 34px; border: 1px solid var(--pwc-border);
      border-radius: var(--radius); padding: 0 10px;
      font-size: 12.5px; color: var(--pwc-dark);
      background: var(--pwc-bg); outline: none;
      font-family: inherit;
    }
    .filter-select:focus, .filter-input:focus { border-color: var(--pwc-orange); background: #fff; }
    .filter-input { width: 200px; }

    /* ── PDF Preview Modal ─────────────────────────────────── */
    .modal-overlay {
      display: none; position: fixed; inset: 0;
      background: rgba(0,0,0,0.55); z-index: 999;
      align-items: center; justify-content: center;
    }
    .modal-overlay.open { display: flex; }
    .modal-box {
      background: #fff; border-radius: var(--radius-lg);
      width: 680px; max-width: 95vw;
      box-shadow: 0 8px 32px rgba(0,0,0,0.20);
      display: flex; flex-direction: column; max-height: 90vh;
    }
    .modal-header {
      padding: 16px 20px; border-bottom: 1px solid var(--pwc-border);
      display: flex; align-items: center; justify-content: space-between;
    }
    .modal-title { font-size: 15px; font-weight: 600; }
    .modal-body { flex: 1; overflow-y: auto; padding: 0; }
    .modal-footer {
      padding: 14px 20px; border-top: 1px solid var(--pwc-border);
      display: flex; align-items: center; justify-content: flex-end; gap: 10px;
    }
    .pdf-preview-area {
      background: #E8E8E8; min-height: 420px;
      display: flex; align-items: center; justify-content: center;
      flex-direction: column; gap: 8px; color: #888; font-size: 13px;
      position: relative;
    }
    .watermark {
      position: absolute; font-size: 56px; font-weight: 900;
      color: rgba(208,74,2,0.12); transform: rotate(-35deg);
      letter-spacing: 8px; pointer-events: none; user-select: none;
      z-index: 1;
    }

    /* ── Document Preview ──────────────────────────────────── */
    .doc-preview {
      background: #fff; padding: 28px 32px;
      font-size: 12.5px; line-height: 1.7; color: var(--pwc-dark);
      position: relative; z-index: 0;
    }
    .doc-preview .doc-cover {
      text-align: center; padding: 18px 0 22px;
      border-bottom: 2px solid var(--pwc-orange); margin-bottom: 18px;
    }
    .doc-preview .doc-cover .doc-org { font-size: 11px; color: var(--pwc-mid); letter-spacing: 2px; }
    .doc-preview .doc-cover h1 {
      font-size: 18px; font-weight: 700; margin: 8px 0 4px;
      color: var(--pwc-dark);
    }
    .doc-preview .doc-cover .doc-sub { font-size: 12px; color: var(--pwc-mid); }
    .doc-preview h2 {
      font-size: 14px; font-weight: 700; color: var(--pwc-dark);
      margin: 18px 0 8px; padding-left: 8px;
      border-left: 3px solid var(--pwc-orange);
    }
    .doc-preview h3 {
      font-size: 12.5px; font-weight: 700; color: var(--pwc-dark);
      margin: 12px 0 6px;
    }
    .doc-preview p { margin: 4px 0 8px; }
    .doc-preview ul { margin: 4px 0 8px; padding-left: 18px; }
    .doc-preview ul li { margin-bottom: 3px; }
    .doc-preview table.doc-tbl {
      width: 100%; border-collapse: collapse; margin: 6px 0 10px;
      font-size: 11.5px;
    }
    .doc-preview table.doc-tbl th,
    .doc-preview table.doc-tbl td {
      border: 1px solid var(--pwc-border); padding: 5px 8px;
      text-align: left; vertical-align: top;
    }
    .doc-preview table.doc-tbl th {
      background: var(--pwc-bg); font-weight: 600;
      width: 32%; color: var(--pwc-dark);
    }
    .doc-preview .doc-formula {
      background: #FAFAFA; border: 1px solid var(--pwc-border);
      border-radius: var(--radius); padding: 8px 12px; margin: 6px 0;
      font-family: 'SF Mono', Consolas, monospace; font-size: 11.5px;
      white-space: pre-wrap; color: var(--pwc-dark);
    }
    .doc-preview .doc-note {
      background: var(--amber-lt); border-left: 3px solid var(--amber);
      padding: 8px 12px; font-size: 11.5px; color: #7A5500;
      border-radius: var(--radius); margin: 6px 0;
    }
    .doc-preview .doc-meta {
      background: var(--pwc-bg); border-radius: var(--radius);
      padding: 10px 14px; font-size: 11.5px; color: var(--pwc-mid);
      margin-bottom: 14px;
    }
    .doc-preview .doc-kpi {
      display: flex; gap: 12px; flex-wrap: wrap; margin: 8px 0 10px;
    }
    .doc-preview .doc-kpi-item {
      background: var(--green-lt); border-left: 3px solid var(--green);
      padding: 6px 12px; border-radius: var(--radius);
      font-size: 11.5px; color: #1A5A30;
    }
    .doc-preview .doc-kpi-item strong { color: var(--green); font-size: 13px; }

    /* ── Create Set Panel ──────────────────────────────────── */
    .create-set-panel {
      background: var(--pwc-bg-form); border-top: 2px solid var(--pwc-orange);
      padding: 20px; display: none;
    }
    .create-set-panel.open { display: block; }

    /* ── Info callout ──────────────────────────────────────── */
    .callout {
      border-radius: var(--radius); padding: 12px 16px; font-size: 12.5px;
      display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px;
    }
    .callout.info  { background: var(--blue-lt);  border-left: 4px solid var(--blue);  color: #1A4A7A; }
    .callout.warn  { background: var(--amber-lt); border-left: 4px solid var(--amber); color: #7A5500; }
    .callout.ok    { background: var(--green-lt); border-left: 4px solid var(--green); color: #1A5A30; }
    .callout.danger{ background: var(--red-lt);   border-left: 4px solid var(--red);   color: #800; }
    .callout-icon  { font-size: 16px; flex-shrink: 0; margin-top: 1px; }