:root {
  --bg: #FAF8F5;
  --bg-elev: #FFFFFF;
  --bg-soft: #F2EFEA;
  --bg-warm: #FBF6EE;

  --ink: #1C1B17;
  --ink-2: #6B6660;
  --ink-3: #A39E96;

  --line: rgba(28, 27, 23, 0.08);
  --line-soft: rgba(28, 27, 23, 0.04);

  --rail: #1F3A5F;
  --rail-deep: #142640;
  --rail-soft: #E7ECF3;

  --signal: #B83227;
  --signal-soft: #FBEAE8;

  --brass: #B58A3C;

  --ok: #2D5F3F;
  --ok-soft: #E5EFE9;
  --warn: #B07D2A;
  --warn-soft: #F8EFD9;
  --risk: #B83227;
  --risk-soft: #FBEAE8;
  --info: #1F3A5F;
  --info-soft: #E7ECF3;

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-dialog: 0 32px 80px rgba(28, 27, 23, 0.18);
  --shadow-hover: 0 1px 0 rgba(28, 27, 23, 0.06);

  --space: 4px;

  --font-sans-zh: "PingFang SC", "Noto Sans SC", "Microsoft YaHei UI", system-ui, sans-serif;
  --font-sans-en: "Inter", "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono", monospace;

  --display: 56px;
  --h1: 34px;
  --h2: 22px;
  --h3: 17px;
  --body: 15px;
  --meta: 13px;
  --label: 11px;

  --ease: cubic-bezier(.32, .72, 0, 1);
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  color: var(--ink);
  font: var(--body) / 1.55 var(--font-sans-zh);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; padding: 0; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--rail);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}
input, select, textarea { -webkit-appearance: none; appearance: none; }
::selection { background: var(--rail); color: #fff; }

.app {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  min-height: 100dvh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--bg-elev);
  border-right: 1px solid var(--line);
  padding: 24px 0 24px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100dvh;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 24px 32px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 16px;
}
.logo-mark {
  width: 28px;
  height: 28px;
  color: var(--ink);
  flex: none;
}
.logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.logo-text strong {
  font: 600 18px/1 var(--font-sans-en);
  letter-spacing: -0.01em;
  color: var(--ink);
}
.logo-text small {
  font: 500 11px/1 var(--font-sans-en);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
#sideNav {
  display: grid;
  gap: 2px;
  padding: 0 12px;
}
.nav-link {
  height: 44px;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--ink-2);
  text-align: left;
  padding: 0 14px 0 14px;
  display: flex;
  gap: 12px;
  align-items: center;
  position: relative;
  font: 500 15px/1 var(--font-sans-zh);
  transition: background-color 160ms var(--ease), color 160ms var(--ease);
}
.nav-link .nav-ico {
  width: 18px;
  height: 18px;
  flex: none;
  color: currentColor;
}
.nav-link b {
  font-weight: inherit;
  flex: 1;
}
.nav-link:hover {
  color: var(--ink);
  background: var(--bg-soft);
}
.nav-link.active {
  color: var(--ink);
  background: var(--bg-warm);
}
.nav-link.active::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--signal);
  border-radius: 2px;
}
.nav-link .count {
  margin-left: auto;
  background: var(--ink);
  color: #fff;
  padding: 2px 7px;
  border-radius: 999px;
  font: 600 11px/1.2 var(--font-sans-en);
  letter-spacing: 0;
  min-width: 18px;
  text-align: center;
}
.side-foot {
  margin-top: auto;
  border-top: 1px solid var(--line-soft);
  padding: 18px 24px 0;
  font: 500 12px/1.4 var(--font-sans-zh);
  color: var(--ink-3);
  display: flex;
  gap: 8px;
  align-items: center;
}
.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  position: relative;
  flex: none;
}
.live-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--ok);
  opacity: 0.18;
}

/* ---------- Banners ---------- */
.demo-banner {
  background: var(--ink);
  color: #fff;
  padding: 9px 16px;
  text-align: center;
  font: 500 12px/1.4 var(--font-sans-zh);
  letter-spacing: 0.02em;
}
.offline {
  background: var(--warn);
  color: #fff;
  padding: 10px 16px;
  text-align: center;
  font: 500 13px/1.4 var(--font-sans-zh);
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
}

/* ---------- Topbar ---------- */
.topbar {
  height: 72px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  padding: 0 40px;
  gap: 24px;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
}
.icon-btn {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  color: var(--ink);
  align-items: center;
  justify-content: center;
}
.icon-btn svg { width: 20px; height: 20px; }
.context {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.context b {
  font: 600 18px/1.2 var(--font-sans-zh);
  color: var(--ink);
  letter-spacing: -0.005em;
}
.context span {
  font: 400 12px/1.3 var(--font-sans-en);
  color: var(--ink-3);
  letter-spacing: 0.01em;
}
.top-actions {
  margin-left: auto;
  display: flex;
  gap: 20px;
  align-items: center;
}
.role-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 12px/1 var(--font-sans-en);
  color: var(--ink-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.role-picker select {
  border: 0;
  background: transparent;
  color: var(--ink);
  font: 500 14px/1 var(--font-sans-zh);
  padding: 6px 4px;
  cursor: pointer;
  letter-spacing: 0;
  text-transform: none;
}
.languages {
  display: flex;
  gap: 14px;
  font: 500 13px/1 var(--font-sans-en);
}
.languages button {
  color: var(--ink-3);
  padding: 6px 0;
  position: relative;
  transition: color 160ms var(--ease);
  letter-spacing: 0.02em;
}
.languages button:hover { color: var(--ink-2); }
.languages button.active { color: var(--ink); }
.languages button.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--signal);
}

/* ---------- Main view ---------- */
.view-root {
  max-width: 1320px;
  margin: 0 auto;
  padding: 40px 40px 72px;
  width: 100%;
}
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 28px;
  gap: 24px;
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--ink-2);
  font: 500 11px/1 var(--font-sans-en);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.page-head h1 {
  margin: 0;
  font: 600 var(--h1)/1.15 var(--font-sans-zh);
  letter-spacing: -0.015em;
  color: var(--ink);
}

/* ---------- Panel ---------- */
.panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
}
.panel h2 {
  font: 600 var(--h2)/1.3 var(--font-sans-zh);
  margin: 0 0 16px;
  letter-spacing: -0.005em;
}
.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 20px;
}

/* ---------- KPI metrics ---------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  overflow: hidden;
}
.metric {
  padding: 24px 28px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.metric:last-child { border-right: 0; }
.metric .kpi-label {
  font: 500 11px/1 var(--font-sans-en);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 6px;
}
.metric .kpi-label svg { width: 14px; height: 14px; }
.metric b {
  display: block;
  font: 600 var(--display)/1 var(--font-sans-en);
  color: var(--ink);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.metric .kpi-label.kpi-warn { color: var(--warn); }
.metric .kpi-label.kpi-risk { color: var(--signal); }
.metric .kpi-label.kpi-rail { color: var(--rail); }
.metric b.kpi-brass { color: var(--brass); }
.metric b.kpi-rail { color: var(--rail); }
.metric b.kpi-warn { color: var(--warn); }
.metric b.kpi-risk { color: var(--signal); }
.metric small {
  color: var(--ink-3);
  font: 400 12px/1.4 var(--font-sans-en);
}
.metric small em {
  color: var(--ok);
  font-style: normal;
  font-weight: 500;
  margin-left: 4px;
}
.metric small em.down { color: var(--signal); }

/* ---------- Priority card ---------- */
.priority-card {
  display: grid;
  grid-template-columns: 4px minmax(0, 1fr) auto auto;
  gap: 20px;
  align-items: center;
  padding: 24px 28px;
  background: var(--bg-warm);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  position: relative;
}
.priority-card > i {
  width: 4px;
  height: 64px;
  background: var(--signal);
  border-radius: 4px;
  align-self: center;
}
.priority-card .pc-body { min-width: 0; }
.priority-card .pc-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.priority-card h2 {
  font: 600 var(--h3)/1.3 var(--font-sans-zh);
  margin: 0 0 6px;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.priority-card p {
  color: var(--ink-2);
  margin: 0;
  font: 400 var(--meta)/1.5 var(--font-sans-zh);
}
.priority-card .sla {
  font: 600 28px/1 var(--font-mono);
  color: var(--signal);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  align-self: center;
}
.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-self: center;
}

/* ---------- Buttons ---------- */
.primary, .secondary, .danger-btn {
  height: 44px;
  border-radius: var(--radius-sm);
  padding: 0 20px;
  font: 500 14px/1 var(--font-sans-zh);
  letter-spacing: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background-color 140ms var(--ease), color 140ms var(--ease), transform 140ms var(--ease);
}
.primary {
  background: var(--rail);
  color: #fff;
}
.primary:hover { background: var(--rail-deep); }
.primary:active { transform: translateY(0.5px); }
.secondary {
  background: var(--bg-elev);
  color: var(--ink);
  border: 1px solid var(--line);
}
.secondary:hover {
  background: var(--bg-soft);
  box-shadow: var(--shadow-hover);
}
.danger-btn {
  background: var(--signal);
  color: #fff;
}
.danger-btn:hover { background: #962219; }

/* ---------- Work list ---------- */
.work-list {
  display: grid;
  gap: 0;
}
.work-row {
  display: grid;
  grid-template-columns: 3px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}
.work-row:last-child { border-bottom: 0; }
.work-row > i {
  width: 3px;
  height: 36px;
  background: var(--warn);
  border-radius: 3px;
}
.work-row.danger > i { background: var(--signal); }
.work-row strong {
  display: block;
  font: 500 15px/1.3 var(--font-sans-zh);
  color: var(--ink);
  margin-bottom: 4px;
}
.work-row small {
  color: var(--ink-3);
  font: 400 12px/1.3 var(--font-sans-en);
  letter-spacing: 0.01em;
}
.work-row .secondary { height: 36px; padding: 0 14px; font-size: 13px; }

/* ---------- Quick grid ---------- */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}
.quick-grid button {
  min-height: 64px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: var(--radius-md);
  font: 500 14px/1 var(--font-sans-zh);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  transition: background-color 140ms var(--ease), border-color 140ms var(--ease);
}
.quick-grid button:hover {
  background: var(--bg-warm);
  border-color: rgba(184, 50, 39, 0.25);
}
.quick-grid button svg {
  width: 22px;
  height: 22px;
  color: var(--rail);
  flex: none;
}

/* ---------- RAG card ---------- */
.rag-card .badge { margin-bottom: 8px; }
.rag-card h2 {
  font: 600 var(--h2)/1.3 var(--font-sans-zh);
  margin: 8px 0 6px;
  letter-spacing: -0.005em;
}
.rag-card .rag-hint {
  color: var(--ink-2);
  font: 400 13px/1.55 var(--font-sans-zh);
  margin: 0 0 16px;
}
.rag-card textarea {
  width: 100%;
  min-height: 92px;
  border: 1px solid var(--line);
  padding: 12px 14px;
  resize: vertical;
  border-radius: var(--radius-sm);
  background: var(--bg);
  font: 400 14px/1.5 var(--font-sans-zh);
  color: var(--ink);
  transition: border-color 140ms var(--ease);
}
.rag-card textarea:focus { border-color: var(--rail); outline: none; }
.rag-card form .primary { width: 100%; margin-top: 12px; }

.status-line {
  display: flex;
  gap: 8px;
  align-items: center;
  font: 500 12px/1 var(--font-sans-en);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 0;
}
.status-line svg { width: 14px; height: 14px; }
.status-line.high { color: var(--signal); }
.status-line.medium { color: var(--warn); }

.evidence {
  border-left: 3px solid var(--rail);
  background: var(--bg-soft);
  padding: 18px 20px;
  margin-top: 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.evidence h3 {
  font: 600 13px/1 var(--font-sans-en);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin: 0 0 10px;
}
.evidence p { white-space: pre-wrap; margin: 0; color: var(--ink); font-size: 14px; line-height: 1.6; }

.confidence {
  height: 4px;
  background: var(--bg-soft);
  border-radius: 2px;
  overflow: hidden;
  margin: 12px 0 6px;
}
.confidence i { display: block; height: 100%; background: var(--rail); }

.citation {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  padding: 12px 14px;
  margin-top: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 140ms var(--ease);
}
.citation:hover { border-color: var(--rail); }
.citation b { display: block; font: 500 14px/1.3 var(--font-sans-zh); color: var(--ink); }
.citation span { color: var(--ink-3); font: 400 12px/1.3 var(--font-mono); margin-top: 2px; display: block; }
.trace { display: block; margin-top: 12px; font: 500 11px/1.3 var(--font-mono); color: var(--ink-3); letter-spacing: 0.02em; }

/* ---------- SOP ---------- */
.sop-shell { max-width: 920px; margin: 0 auto; }
.sop-shell h1 { font-size: 32px; }
.object-bar {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 20px;
  align-items: center;
}
.object-bar b { font: 500 15px/1.3 var(--font-sans-zh); color: var(--ink); }
.object-bar span { color: var(--ink-3); font: 400 12px/1.3 var(--font-mono); }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 24px 0 8px;
}
.step-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font: 500 13px/1.3 var(--font-sans-zh);
  color: var(--ink-2);
  text-align: left;
  cursor: pointer;
  transition: background-color 140ms var(--ease), border-color 140ms var(--ease), color 140ms var(--ease);
}
.step-pill:hover { border-color: rgba(28,27,23,.18); color: var(--ink); }
.step-pill-num {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--ink-2);
  font: 600 12px/1 var(--font-sans-en);
  font-variant-numeric: tabular-nums;
  flex: none;
}
.step-pill-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.step-pill.done {
  background: var(--bg-soft);
  border-color: var(--line);
  color: var(--ink);
}
.step-pill.done .step-pill-num {
  background: var(--rail);
  color: #fff;
}
.step-pill.active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.step-pill.active .step-pill-num {
  background: var(--signal);
  color: #fff;
}

.step-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  padding: 24px 0 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}
.step-header-main { display: flex; align-items: center; gap: 20px; min-width: 0; }
.step-counter {
  font: 600 48px/0.9 var(--font-sans-en);
  color: var(--ink);
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.step-counter .step-sep { color: var(--ink-3); font-weight: 300; font-size: 32px; }
.step-counter .step-total { color: var(--ink-3); font-size: 22px; font-weight: 500; }
.step-titles { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.step-titles .kpi-label { font: 500 11px/1 var(--font-sans-en); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.step-titles .step-title {
  font: 600 26px/1.25 var(--font-sans-zh);
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}

.step-body { margin-bottom: 24px; }
.step-section-h {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 500 11px/1 var(--font-sans-en);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin: 0 0 14px;
}
.step-section-ico { width: 14px; height: 14px; color: var(--ink-2); }
.step-body-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: sop;
  display: grid;
  gap: 10px;
}
.step-body-list li {
  position: relative;
  padding: 12px 14px 12px 44px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font: 400 14px/1.65 var(--font-sans-zh);
  counter-increment: sop;
}
.step-body-list li::before {
  content: counter(sop, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 12px;
  font: 600 12px/1.3 var(--font-mono);
  color: var(--rail);
  letter-spacing: 0.04em;
}

.step-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.step-side {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px 20px 20px;
}
.step-side-ppe .step-section-h { color: var(--rail); }
.step-side-forbid { background: var(--signal-soft); border-color: transparent; }
.step-side-forbid .step-section-h { color: var(--signal); }

.step-ppe-list, .step-forbid-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.step-ppe-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font: 400 14px/1.55 var(--font-sans-zh);
  color: var(--ink);
}
.ppe-dot {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--rail-soft);
  flex: none;
  position: relative;
}
.ppe-dot::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 3px;
  background: var(--rail);
  opacity: 0.85;
}
.ppe-dot[data-ico="helmet"]::after { border-radius: 50% 50% 35% 35% / 65% 65% 35% 35%; }
.ppe-dot[data-ico="gloves"]::after { border-radius: 8px 8px 4px 4px; transform: rotate(-15deg); }
.ppe-dot[data-ico="radio"]::after { border-radius: 50%; }
.ppe-dot[data-ico="torch"]::after { border-radius: 4px; transform: rotate(45deg); }
.ppe-dot[data-ico="camera"]::after { border-radius: 3px; }
.ppe-dot[data-ico="ruler"]::after { height: 2px; top: 10px; inset: 8px 4px; }
.ppe-dot[data-ico="gps"]::after { border-radius: 50%; box-shadow: 4px 0 0 -2px currentColor; }
.ppe-dot[data-ico="form"]::after { height: 8px; top: 7px; inset: 4px; }
.ppe-dot[data-ico="sign"]::after { border-radius: 1px; transform: rotate(45deg); }

.step-forbid-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font: 400 14px/1.55 var(--font-sans-zh);
  color: var(--signal);
}
.forbid-mark {
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--signal);
  color: #fff;
  display: grid;
  place-items: center;
  font: 700 13px/1 var(--font-sans-en);
  flex: none;
}

.step-criteria {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
}
.step-criteria-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.step-criteria-head .step-section-h { margin: 0; }
.step-criteria-meta {
  font: 500 11px/1 var(--font-sans-en);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.step-criteria-hint {
  font: 400 12px/1.5 var(--font-sans-zh);
  color: var(--ink-3);
  margin: 0 0 14px;
}
.step-criteria-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.step-criteria-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 140ms var(--ease), background-color 140ms var(--ease);
}
.step-criteria-row:hover { border-color: rgba(28,27,23,.18); }
.step-criteria-row input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0; height: 0;
}
.step-criteria-box {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 1.5px solid var(--ink-2);
  background: var(--bg-elev);
  flex: none;
  position: relative;
  transition: background-color 140ms var(--ease), border-color 140ms var(--ease);
}
.step-criteria-row input[type="checkbox"]:checked + .step-criteria-box {
  background: var(--rail);
  border-color: var(--rail);
}
.step-criteria-row input[type="checkbox"]:checked + .step-criteria-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 6px;
  height: 11px;
  border: 2px solid #fff;
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg);
}
.step-criteria-text {
  flex: 1;
  font: 400 14px/1.5 var(--font-sans-zh);
  color: var(--ink);
}
.step-criteria-row:has(input:checked) .step-criteria-text { color: var(--ink-2); }
.step-criteria-list.all-checked .step-criteria-row { border-color: var(--ok); background: var(--ok-soft); }

.sop-panel { padding: 28px 32px 32px; }

.notice {
  padding: 14px 16px;
  border-left: 3px solid var(--signal);
  background: var(--signal-soft);
  color: var(--signal);
  margin: 20px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font: 500 13px/1.5 var(--font-sans-zh);
}
.notice-rail {
  border-left-color: var(--rail);
  background: var(--rail-soft);
  color: var(--rail);
}
.notice small {
  display: block;
  margin-top: 4px;
  color: var(--ink-2);
  font: 400 12px/1.5 var(--font-sans-zh);
}

.source {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin-top: 8px;
  color: var(--ink-2);
  font: 400 12px/1.5 var(--font-sans-zh);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.source > div {
  display: flex;
  gap: 10px;
  align-items: baseline;
  flex-wrap: wrap;
}
.source > div > span {
  font: 500 11px/1 var(--font-sans-en);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.source > div > b {
  font: 500 13px/1.4 var(--font-mono);
  color: var(--ink);
  letter-spacing: 0.01em;
}
.source > small {
  color: var(--ink-3);
  font: 400 11px/1.5 var(--font-sans-zh);
}

.fixed-actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}
.fixed-actions > * { flex: 1; }

.check {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 400 14px/1.55 var(--font-sans-zh);
  color: var(--ink);
  cursor: pointer;
  padding: 16px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-top: 8px;
}
.check input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0; height: 0;
}
.check-box {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 1.5px solid var(--ink-2);
  background: var(--bg);
  flex: none;
  position: relative;
  transition: background-color 140ms var(--ease), border-color 140ms var(--ease);
}
.check input[type="checkbox"]:checked + .check-box {
  background: var(--rail);
  border-color: var(--rail);
}
.check input[type="checkbox"]:checked + .check-box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border: 2px solid #fff;
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg);
}
.check input[type="checkbox"]:checked ~ span:last-child { color: var(--ink); font-weight: 500; }

/* ---------- Wizard / inspection ---------- */
.wizard-form { display: grid; gap: 18px; }
.field { display: grid; gap: 8px; }
.field label, .field > span {
  font: 500 12px/1 var(--font-sans-en);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.field input, .field select, .field textarea {
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  background: var(--bg-elev);
  color: var(--ink);
  font: 400 14px/1.4 var(--font-sans-zh);
  transition: border-color 140ms var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--rail);
  outline: none;
}
.field textarea { min-height: 120px; resize: vertical; }

.image-preview {
  min-height: 220px;
  background: var(--bg-soft);
  border: 1px dashed var(--ink-3);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: var(--ink-3);
  font: 500 13px/1 var(--font-sans-zh);
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.candidates-box {
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-top: 16px;
}
.candidates-box > b {
  font: 500 13px/1 var(--font-sans-en);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  display: block;
  margin-bottom: 12px;
}
.candidate {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  margin-bottom: 8px;
}
.candidate:last-child { margin-bottom: 0; }
.candidate-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font: 500 14px/1.2 var(--font-sans-zh);
  color: var(--ink);
}
.candidate-head b {
  font: 600 13px/1 var(--font-mono);
  color: var(--rail);
  font-variant-numeric: tabular-nums;
}
.bar {
  height: 4px;
  background: var(--bg-soft);
  border-radius: 2px;
  overflow: hidden;
  margin: 8px 0;
}
.bar i { display: block; height: 100%; background: var(--rail); }
.candidate small {
  display: block;
  font-size: 12px;
  color: var(--ink-2);
  margin-top: 6px;
  line-height: 1.5;
}
.hint {
  font: 400 12px/1.5 var(--font-sans-zh);
  color: var(--ink-3);
  margin-top: 12px;
  font-style: italic;
}

/* ---------- Incident ---------- */
.incident-list { display: grid; gap: 16px; }
.incident-item {
  display: grid;
  grid-template-columns: 4px 1fr auto;
  gap: 20px;
  padding: 24px 28px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  position: relative;
}
.incident-item > i {
  width: 4px;
  align-self: stretch;
  background: var(--signal);
  border-radius: 4px;
}
.incident-item h3 {
  margin: 0;
  font: 600 18px/1.3 var(--font-sans-zh);
  color: var(--ink);
}
.incident-item > div > p {
  margin: 8px 0 16px;
  color: var(--ink-2);
  font: 400 13px/1.5 var(--font-sans-zh);
}
.timeline {
  border-left: 1px solid var(--line);
  padding-left: 16px;
  display: grid;
  gap: 14px;
  margin: 16px 0;
}
.timeline div { font-size: 13px; color: var(--ink); }
.timeline b {
  display: block;
  font: 500 13px/1.4 var(--font-sans-zh);
  color: var(--ink);
  margin-bottom: 2px;
}
.timeline span {
  font: 400 12px/1.4 var(--font-sans-zh);
  color: var(--ink-3);
}
.timeline div:first-child b { color: var(--ink-2); font-weight: 500; }

/* ---------- Knowledge ---------- */
.knowledge-grid { display: grid; gap: 12px; }
.knowledge-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 16px;
  align-items: center;
  padding: 18px 20px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.knowledge-item h3 { margin: 0; font: 500 15px/1.3 var(--font-sans-zh); color: var(--ink); }
.knowledge-item p { margin: 4px 0 0; color: var(--ink-3); font: 400 12px/1.4 var(--font-mono); }

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  background: var(--bg-soft);
  color: var(--ink-2);
  border: 1px solid var(--line);
  font: 600 11px/1.2 var(--font-sans-en);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.badge svg { width: 10px; height: 10px; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge.risk { background: var(--signal-soft); color: var(--signal); border-color: transparent; }
.badge.rail { background: var(--rail-soft); color: var(--rail); border-color: transparent; }

/* ---------- Toast ---------- */
#toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  background: var(--ink);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font: 500 13px/1.4 var(--font-sans-zh);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 200ms var(--ease), transform 200ms var(--ease);
  z-index: 30;
  box-shadow: var(--shadow-dialog);
}
#toast.show { opacity: 1; transform: none; }

/* ---------- Dialog ---------- */
dialog {
  border: 0;
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: calc(100% - 32px);
  padding: 28px;
  box-shadow: var(--shadow-dialog);
  background: var(--bg-elev);
  color: var(--ink);
}
dialog::backdrop { background: rgba(28, 27, 23, 0.42); }
.dialog-close {
  float: right;
  background: var(--bg-soft);
  width: 32px;
  height: 32px;
  border-radius: 999px;
  font-size: 18px;
  color: var(--ink);
  display: grid;
  place-items: center;
  line-height: 1;
}
.dialog-close:hover { background: var(--ink); color: #fff; }
dialog h2 { font: 600 22px/1.3 var(--font-sans-zh); margin: 0 0 8px; }
dialog p { color: var(--ink-2); font: 400 14px/1.6 var(--font-sans-zh); margin: 0 0 8px; }

/* ---------- Mobile nav ---------- */
.bottom-nav { display: none; }

/* ---------- Tablet ---------- */
@media (max-width: 1024px) {
  .app { grid-template-columns: 72px minmax(0, 1fr); }
  .sidebar { padding: 20px 0; }
  .logo { padding: 0 16px 24px; justify-content: center; }
  .logo-text { display: none; }
  #sideNav { padding: 0 8px; }
  .nav-link { padding: 0; justify-content: center; }
  .nav-link b { display: none; }
  .nav-link .count { display: none; }
  .nav-link.active::before { left: -8px; }
  .side-foot { padding: 18px 12px 0; justify-content: center; }
  .side-foot span:not(.live-dot) { display: none; }
  .grid-2 { grid-template-columns: 1fr; }
  .view-root { padding: 32px 28px 60px; }
  .topbar { padding: 0 28px; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(1), .metric:nth-child(2) { border-bottom: 1px solid var(--line); }
}

/* ---------- Mobile ---------- */
@media (max-width: 767px) {
  body { padding-bottom: 80px; }
  .app { display: block; }
  .sidebar { display: none; }
  .topbar { height: 60px; padding: 0 16px; gap: 12px; }
  .icon-btn {
    display: inline-flex;
    width: 40px;
    height: 40px;
  }
  .context b { font-size: 16px; }
  .context span { font-size: 11px; white-space: nowrap; max-width: 180px; overflow: hidden; text-overflow: ellipsis; }
  .role-picker { display: none; }
  .languages { margin-left: auto; }
  .view-root { padding: 24px 20px 40px; }
  .page-head { align-items: flex-start; flex-direction: column; gap: 12px; }
  .page-head h1 { font-size: 28px; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .metric { padding: 18px 20px; }
  .metric b { font-size: 40px; }
  .priority-card {
    grid-template-columns: 4px 1fr;
    gap: 16px;
    padding: 20px;
  }
  .priority-card .sla { grid-column: 2; font-size: 20px; }
  .priority-card .actions { grid-column: 2; }
  .grid-2 { display: block; }
  .rag-card { margin-top: 16px; }
  .quick-grid { grid-template-columns: 1fr 1fr; }
  .panel { padding: 20px; }
  .sop-shell h1 { font-size: 26px; }
  .object-bar { display: grid; gap: 6px; }
  .sop-panel { padding: 20px; }
  .step-counter { font-size: 38px; }
  .step-counter .step-sep { font-size: 24px; }
  .step-counter .step-total { font-size: 18px; }
  .step-titles .step-title { font-size: 21px; }
  .step-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .step-grid { grid-template-columns: 1fr; }
  .fixed-actions {
    position: sticky;
    bottom: 0;
    background: var(--bg);
    padding: 12px 0 0;
    margin-top: 24px;
    z-index: 3;
    flex-wrap: wrap;
  }
  .fixed-actions > * { min-height: 52px; }
  .fixed-actions .primary { flex: 1 1 100%; order: 1; }
  .fixed-actions .secondary { flex: 1 1 calc(50% - 6px); order: 2; }
  .incident-item { grid-template-columns: 4px 1fr; padding: 20px; }
  .incident-item .actions { grid-column: 2; }
  .knowledge-item { grid-template-columns: 1fr auto; }
  .knowledge-item .badge { grid-row: 2; grid-column: 1; }
  .knowledge-item button { grid-column: 2; grid-row: 1 / 3; }
  .demo-banner { font-size: 11px; }
  .bottom-nav {
    position: fixed;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    left: 0; right: 0; bottom: 0;
    height: 64px;
    padding-bottom: env(safe-area-inset-bottom);
    background: var(--bg-elev);
    border-top: 1px solid var(--line);
    z-index: 15;
  }
  .bottom-nav button {
    border: 0;
    background: var(--bg-elev);
    color: var(--ink-3);
    font: 500 10px/1.3 var(--font-sans-en);
    display: grid;
    place-items: center;
    align-content: center;
    gap: 4px;
    letter-spacing: 0.02em;
  }
  .bottom-nav button svg { width: 20px; height: 20px; }
  .bottom-nav button.active { color: var(--signal); }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; animation: none !important; }
}