/* ============================================================
   xTool · D1 Console layout — 与 Claude design wireframe 同源
   仅含布局/组件样式，颜色/字体/间距/圆角依赖 tokens.css
   ============================================================ */

:root {
  --ink: #E8EAED;
  --ink-2: #A8ADB5;
  --ink-3: #6A6F78;
  --line: #3A3D44;
  --line-soft: #2A2D33;
  --bg: #1B1C1E;
  --bg-2: #222428;
  --bg-3: #2A2C30;
  --accent: #00C767;
  --accent-soft: rgba(0, 199, 103, 0.10);
  --accent-border: rgba(0, 199, 103, 0.30);
  --warn: #F59E0B;
  --warn-soft: rgba(245, 158, 11, 0.10);
  --danger: #EF4444;
  --danger-soft: rgba(239, 68, 68, 0.10);
  --info: #60A5FA;
  --info-soft: rgba(96, 165, 250, 0.10);
  --hand: 'Smiley Sans', 'Noto Sans SC', sans-serif;
  --sans: 'Noto Sans SC', 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Inter Tight', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "palt" 1;
}

/* ============ APP SHELL（侧栏 + 主区） ============ */
.app-shell {
  display: grid;
  grid-template-columns: 248px 1fr;
  min-height: 100vh;
}

/* ============ 侧栏 ============ */
.app-side {
  border-right: 1.5px solid var(--line);
  background: #16171A;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.app-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 0 8px 20px;
  border-bottom: 1px dashed var(--line);
  margin-bottom: 16px;
}
.app-brand .logo {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: #0B2317;
  font: 800 14px/1 var(--sans);
}
.app-brand .name {
  font: 700 14px/1.15 var(--sans);
  color: var(--ink);
}
.app-brand .name span {
  display: block;
  font: 500 9px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-top: 4px;
}

.app-group {
  font: 600 9px/1 var(--mono);
  letter-spacing: 0.18em;
  color: var(--ink-3);
  padding: 14px 8px 6px;
  text-transform: uppercase;
}
.app-nav {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  font: 500 13px/1 var(--sans);
  color: var(--ink-2);
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  width: 100%;
  text-align: left;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.app-nav:hover { background: var(--line-soft); }
.app-nav.is-active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent-border);
}
.app-nav .label-en {
  margin-left: auto;
  font: 500 10px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.1em;
}
.app-nav.is-active .label-en { color: var(--accent); }
.app-nav .ic { width: 16px; height: 16px; flex-shrink: 0; stroke: currentColor; stroke-width: 1.6; fill: none; stroke-linecap: round; stroke-linejoin: round; }

.app-side-foot {
  margin-top: auto;
  padding: 16px 8px 0;
  border-top: 1px dashed var(--line);
}
.app-side-foot .row {
  display: flex; align-items: center; gap: 10px;
}
.app-side-foot .avatar {
  width: 32px; height: 32px;
  border-radius: 99px;
  background: var(--bg);
  border: 1.5px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font: 700 12px/1 var(--mono);
  color: var(--ink-2);
}
.app-side-foot .who {
  flex: 1; min-width: 0;
  font: 600 12px/1.2 var(--sans);
  color: var(--ink);
}
.app-side-foot .who small {
  display: block;
  font: 500 9px/1 var(--mono);
  color: var(--ink-3);
  margin-top: 3px;
  letter-spacing: 0.06em;
}
.app-side-foot .health-dot {
  width: 8px; height: 8px;
  border-radius: 99px;
  background: var(--accent);
  flex-shrink: 0;
}

/* ============ 主区 ============ */
.app-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.app-bar {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 28px;
  border-bottom: 1.5px solid var(--line);
  background: var(--bg-2);
  position: sticky;
  top: 0;
  z-index: 10;
}
.app-bar h1 {
  margin: 0;
  font: 700 18px/1 var(--sans);
}
.app-bar .crumb {
  font: 500 11px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.1em;
}
.app-bar-actions {
  margin-left: auto;
  display: flex; gap: 8px; align-items: center;
}

.app-body {
  padding: 24px 28px;
  overflow: auto;
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 24px;
  align-items: start;
}
.app-work {
  display: flex; flex-direction: column;
  gap: 18px;
  min-width: 0;
}
.app-rail {
  display: flex; flex-direction: column;
  gap: 16px;
  position: sticky;
  top: 80px;
}

/* ============ Frame / Card ============ */
.xt-frame {
  background: var(--bg-2);
  border: 1.5px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  position: relative;
}
.xt-frame.padded-lg { padding: 24px; }

.xt-section-title {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 14px;
}
.xt-section-title .num {
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.18em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 3px 6px;
  border-radius: 4px;
}
.xt-section-title .en {
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.xt-section-title .zh {
  font: 600 14px/1 var(--sans);
  color: var(--ink);
}
.xt-section-title .actions {
  margin-left: auto;
  display: flex; gap: 6px; align-items: center;
}

/* ============ Stepper ============ */
.xt-steps {
  display: flex; align-items: center; gap: 0;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.xt-step {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  font: 600 11px/1 var(--sans);
  color: var(--ink-2);
  background: var(--bg);
  white-space: nowrap;
}
.xt-step.is-active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}
.xt-step.is-done {
  color: var(--ink-3);
  border-style: dashed;
}
.xt-step .n {
  width: 18px; height: 18px;
  border-radius: 999px;
  border: 1.5px solid currentColor;
  display: flex; align-items: center; justify-content: center;
  font: 700 10px/1 var(--mono);
}
.xt-arrow {
  flex: 1;
  height: 1px;
  border-top: 1.5px dashed var(--line);
  margin: 0 -1px;
  min-width: 16px;
}
.xt-arrow.is-done { border-color: var(--accent); }

/* ============ Field ============ */
.xt-field {
  display: flex; flex-direction: column;
  gap: 6px;
}
.xt-field-label {
  display: flex; align-items: baseline; gap: 8px;
}
.xt-field-label .en {
  font: 600 9px/1 var(--mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.xt-field-label .zh {
  font: 500 11px/1 var(--sans);
  color: var(--ink-2);
}
.xt-input {
  display: flex; align-items: center; gap: 8px;
  height: 38px; padding: 0 12px;
  border-radius: 8px;
  background: var(--bg);
  border: 1.5px solid var(--line);
  font: 500 13px/1 var(--sans);
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
}
.xt-input:focus,
.xt-input:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.xt-input.is-tall {
  height: auto; min-height: 80px;
  padding: 10px 12px;
  align-items: flex-start;
  resize: vertical;
  line-height: 1.5;
}
select.xt-input {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path fill='%236A6F78' d='M0 0h10L5 6z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* ============ Button ============ */
.xt-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  height: 36px;
  padding: 0 16px;
  border-radius: 8px;
  font: 600 12px/1 var(--sans);
  border: 1.5px solid var(--line);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s;
  white-space: nowrap;
}
.xt-btn:hover { background: var(--line-soft); color: var(--ink); }
.xt-btn:active { transform: translateY(1px); }
.xt-btn[disabled],
.xt-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.xt-btn .ic { width: 14px; height: 14px; stroke: currentColor; stroke-width: 1.6; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.xt-btn--solid {
  background: var(--ink);
  color: #0E0F10;
  border-color: var(--ink);
}
.xt-btn--solid:hover { background: #fff; color: #0E0F10; }
.xt-btn--brand {
  background: var(--accent);
  color: #0B2317;
  border-color: var(--accent);
}
.xt-btn--brand:hover { background: #2ADB85; border-color: #2ADB85; }
.xt-btn--lg { height: 44px; padding: 0 24px; font-size: 13px; }
.xt-btn--ghost-danger {
  border-color: var(--danger);
  color: var(--danger);
}

/* ============ Chip ============ */
.xt-chip {
  display: inline-flex; align-items: center; gap: 5px;
  height: 22px; padding: 0 8px;
  border-radius: 4px;
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.06em;
  background: var(--line-soft);
  color: var(--ink-2);
  border: 1px solid var(--line);
}
.xt-chip--red { color: #FCA5A5; background: var(--danger-soft); border-color: rgba(239, 68, 68, 0.30); }
.xt-chip--yel { color: #FCD34D; background: var(--warn-soft); border-color: rgba(245, 158, 11, 0.30); }
.xt-chip--grn { color: #6EE7B7; background: var(--accent-soft); border-color: var(--accent-border); }
.xt-chip--blu { color: #93C5FD; background: var(--info-soft); border-color: rgba(96, 165, 250, 0.30); }

/* ============ Rule grid (脱敏规则) ============ */
.xt-rule-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
@media (max-width: 1280px) { .xt-rule-grid { grid-template-columns: repeat(2, 1fr); } }
.xt-rule-cell {
  display: flex; align-items: center; gap: 8px;
  padding: 12px;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  font: 500 12px/1.2 var(--sans);
  color: var(--ink-2);
  background: var(--bg);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.xt-rule-cell:hover { background: var(--line-soft); }
.xt-rule-cell input { display: none; }
.xt-rule-cell .box {
  width: 16px; height: 16px;
  border: 1.5px solid var(--ink-3);
  border-radius: 4px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  transition: background 0.15s, border-color 0.15s;
}
.xt-rule-cell .box svg { display: none; stroke: #0B2317; stroke-width: 2.5; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.xt-rule-cell input:checked ~ .box {
  background: var(--accent);
  border-color: var(--accent);
}
.xt-rule-cell input:checked ~ .box svg { display: block; }
.xt-rule-cell input:checked ~ span { color: var(--ink); }
.xt-rule-cell:has(input:checked) {
  border-color: var(--accent-border);
}
.xt-rule-cell .src {
  margin-left: auto;
  font: 500 9px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.06em;
}

/* ============ Dropzone ============ */
.xt-dropzone {
  border: 1.5px dashed var(--line);
  border-radius: 10px;
  padding: 28px 20px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: repeating-linear-gradient(45deg, transparent 0 8px, rgba(255, 255, 255, 0.015) 8px 16px);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.xt-dropzone:hover {
  border-color: var(--accent);
  background: repeating-linear-gradient(45deg, transparent 0 8px, rgba(0, 199, 103, 0.04) 8px 16px);
}
.xt-dropzone .ic-up {
  width: 32px; height: 32px;
  stroke: currentColor;
  stroke-width: 1.6;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  color: var(--ink-3);
}
.xt-dropzone .t {
  font: 600 14px/1.4 var(--sans);
  color: var(--ink);
  text-align: center;
}
.xt-dropzone .s {
  font: 500 12px/1 var(--sans);
  color: var(--accent);
}
.xt-dropzone .meta {
  font: 500 10px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.1em;
}

/* ============ Compare（脱敏对比） ============ */
.xt-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.xt-compare .pane {
  padding: 14px 16px;
  border-right: 1.5px solid var(--line);
  background: var(--bg);
  min-height: 220px;
  max-height: 420px;
  overflow: auto;
}
.xt-compare .pane:last-child { border-right: 0; }
.xt-compare .pane-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}
.xt-compare .pane-head .ttl {
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.18em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.xt-compare .body-text {
  font: 500 12px/1.7 var(--mono);
  color: var(--ink-2);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ============ Progress + Event log ============ */
.xt-progress {
  height: 6px;
  background: var(--line-soft);
  border-radius: 99px;
  overflow: hidden;
}
.xt-progress > i {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.4s ease;
}
.xt-evt {
  display: flex; gap: 10px;
  font: 500 11px/1.5 var(--sans);
  color: var(--ink-2);
  padding: 8px 0;
  border-top: 1px dashed var(--line-soft);
}
.xt-evt:first-child { border-top: 0; }
.xt-evt .dot {
  width: 8px; height: 8px;
  border-radius: 99px;
  background: var(--accent);
  margin-top: 5px;
  flex-shrink: 0;
}
.xt-evt.is-done .dot { background: var(--ink-3); }
.xt-evt .ts {
  font: 500 9px/1 var(--mono);
  color: var(--ink-3);
  margin-left: auto;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* ============ Tabs（视图切换、KB tabs） ============ */
.xt-tabs {
  display: inline-flex; gap: 4px;
  padding: 4px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.xt-tab {
  padding: 8px 14px;
  border-radius: 6px;
  font: 600 11px/1 var(--sans);
  color: var(--ink-2);
  cursor: pointer;
  border: 0;
  background: transparent;
  display: inline-flex; align-items: center; gap: 6px;
  white-space: nowrap;
}
.xt-tab.is-active {
  background: var(--ink);
  color: #0E0F10;
}

/* ============ KB Panel ============ */
.kb-panel {
  position: fixed;
  top: 0; right: 0;
  height: 100vh;
  width: 100%;
  max-width: 480px;
  background: rgba(22, 23, 26, 0.98);
  backdrop-filter: blur(12px);
  border-left: 1.5px solid var(--line);
  z-index: 100;
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.3, 0.7, 0.4, 1);
}
.kb-panel.is-open { transform: translateX(0); }
.kb-panel-head {
  padding: 16px 20px;
  border-bottom: 1.5px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
}
.kb-panel-head h3 {
  margin: 0;
  font: 700 14px/1 var(--sans);
  color: var(--ink);
  display: flex; align-items: center; gap: 8px;
}
.kb-panel-head h3 .ic { color: var(--accent); width: 18px; height: 18px; }
.kb-panel-tabs {
  padding: 12px 20px;
  border-bottom: 1.5px solid var(--line);
  display: flex; flex-wrap: wrap;
  gap: 6px;
}
.kb-tab {
  padding: 6px 10px;
  border-radius: 6px;
  background: var(--line-soft);
  color: var(--ink-2);
  font: 500 11px/1 var(--sans);
  border: 0;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.kb-tab:hover { background: var(--line); color: var(--ink); }
.kb-tab.is-active { background: var(--accent); color: #0B2317; }
.kb-content {
  flex: 1;
  overflow: auto;
  padding: 20px;
  font: 500 12px/1.7 var(--mono);
  color: var(--ink-2);
  white-space: pre-wrap;
  word-break: break-word;
}
.kb-panel-foot {
  padding: 12px 20px;
  border-top: 1.5px solid var(--line);
  font: 500 10px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.06em;
}

/* ============ Modal（参数确认） ============ */
.xt-modal {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.xt-modal[hidden] { display: none; }
.xt-modal-card {
  background: var(--bg-2);
  border: 1.5px solid var(--line);
  border-radius: 14px;
  max-width: 560px;
  width: 100%;
  padding: 24px;
}
.xt-modal-head {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 6px;
}
.xt-modal-head h2 {
  margin: 0;
  font: 700 16px/1 var(--sans);
  color: var(--ink);
}
.xt-modal-head .ic { color: var(--accent); }
.xt-modal-sub {
  font: 500 12px/1.5 var(--sans);
  color: var(--ink-3);
  margin-bottom: 18px;
}
.xt-modal-fields { display: flex; flex-direction: column; gap: 12px; }
.xt-modal-actions {
  display: flex; justify-content: flex-end; gap: 8px;
  margin-top: 20px;
}

/* ============ Review result（卡片化） ============ */
.review-empty {
  border: 1.5px dashed var(--line);
  border-radius: 10px;
  padding: 32px 20px;
  text-align: center;
  font: 500 13px/1.6 var(--sans);
  color: var(--ink-3);
}
.review-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}
.review-stat {
  padding: 14px 16px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
}
.review-stat.r { border-color: rgba(239, 68, 68, 0.30); background: var(--danger-soft); }
.review-stat.y { border-color: rgba(245, 158, 11, 0.30); background: var(--warn-soft); }
.review-stat.g { border-color: var(--accent-border); background: var(--accent-soft); }
.review-stat .v {
  font: 700 22px/1 var(--sans);
  color: var(--ink);
}
.review-stat.r .v { color: #FCA5A5; }
.review-stat.y .v { color: #FCD34D; }
.review-stat.g .v { color: #6EE7B7; }
.review-stat .l {
  font: 500 9px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-top: 6px;
}

.review-meta-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 18px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
.review-meta-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-soft);
  font: 500 12px/1.5 var(--sans);
}
.review-meta-table tr:last-child td { border-bottom: 0; }
.review-meta-table td:first-child {
  background: var(--bg-2);
  color: var(--ink-3);
  width: 30%;
  font-weight: 600;
}
.review-meta-table td:last-child { color: var(--ink); }

.risk-card {
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--bg-2);
  padding: 16px 18px;
  margin-bottom: 12px;
  position: relative;
  border-left-width: 4px;
}
.risk-card.r { border-left-color: var(--danger); }
.risk-card.y { border-left-color: var(--warn); }
.risk-card.g { border-left-color: var(--accent); }
.risk-card .head {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.risk-card .quote-box {
  margin: 8px 0;
  padding: 10px 12px;
  border-radius: 6px;
  background: var(--bg);
  border: 1.5px solid var(--line);
  border-left: 3px solid var(--warn);
  font: 500 12px/1.6 var(--sans);
  color: var(--ink-2);
}
.risk-card .sec {
  margin-top: 10px;
}
.risk-card .sec .lbl-x {
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 4px;
}
.risk-card .sec .lbl-x .en {
  font: 600 9px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.risk-card .sec .lbl-x .zh {
  font: 600 12px/1 var(--sans);
  color: var(--ink);
}
.risk-card .sec p {
  margin: 0;
  font: 500 12px/1.6 var(--sans);
  color: var(--ink-2);
}

.consistency-box {
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--bg-2);
  padding: 16px 18px;
  margin-top: 18px;
}
.consistency-box .head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}
.consistency-box .head .ttl {
  font: 700 13px/1 var(--sans);
  color: var(--ink);
}
.consistency-box .head .stat {
  font: 600 11px/1 var(--mono);
}
.consistency-box .issue {
  padding: 8px 0;
  border-top: 1px dashed var(--line-soft);
  font: 500 11px/1.5 var(--sans);
  color: var(--ink-2);
}

/* ============ Playbook accordion ============ */
.playbook-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
@media (max-width: 1100px) { .playbook-grid { grid-template-columns: 1fr; } }
.playbook-clause {
  background: var(--bg);
  border: 1.5px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex; flex-direction: column;
  gap: 8px;
}
.playbook-clause label {
  font: 600 12px/1.2 var(--sans);
  color: var(--ink);
}
.playbook-clause .clause-en {
  font: 500 10px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.1em;
}

/* ============ Responsiveness ============ */
@media (max-width: 1280px) {
  .app-body { grid-template-columns: 1fr; }
  .app-rail { position: static; }
}
@media (max-width: 960px) {
  .app-shell { grid-template-columns: 1fr; }
  .app-side {
    position: relative;
    height: auto;
    border-right: 0;
    border-bottom: 1.5px solid var(--line);
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
  .app-side .app-brand { padding: 0; border: 0; margin: 0 12px 0 0; }
  .app-group, .app-side-foot { display: none; }
}

/* hidden helper compatible with existing JS .classList.add('hidden') */
.hidden { display: none !important; }

/* badges for original/masked text panes */
.xt-badge {
  display: inline-flex; align-items: center;
  font: 600 10px/1 var(--mono);
  padding: 4px 8px;
  border-radius: 4px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.xt-badge--red { background: var(--danger-soft); color: #FCA5A5; }
.xt-badge--grn { background: var(--accent-soft); color: #6EE7B7; }
.xt-badge.hidden { display: none !important; }

/* sync toggle */
.xt-sync {
  display: inline-flex; align-items: center; gap: 8px;
  cursor: pointer;
}
.xt-sync .label {
  font: 600 10px/1 var(--mono);
  color: var(--ink-3);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.xt-sync .switch {
  position: relative;
  width: 32px; height: 18px;
  border-radius: 999px;
  background: var(--line);
  cursor: pointer;
  border: 0;
  transition: background 0.15s;
}
.xt-sync .switch.is-on { background: var(--accent); }
.xt-sync .switch i {
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  transition: transform 0.15s;
}
.xt-sync .switch.is-on i { transform: translateX(14px); }