:root {
  --bg: #f5f7fb;
  --bg-soft: #f9fbff;
  --surface: #ffffff;
  --surface-soft: #fcfdff;
  --sidebar: #eef3f8;
  --line: #dbe5ef;
  --line-soft: #e9eff6;
  --text: #0f172a;
  --text-soft: #334155;
  --muted: #6b7c96;
  --muted-2: #475569;
  --blue: #2563eb;
  --blue-soft: #dbeafe;
  --blue-soft-2: #eff6ff;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --shadow-sm: 0 12px 30px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 18px 48px rgba(15, 23, 42, 0.08);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --focus-ring: 0 0 0 4px rgba(37, 99, 235, 0.14);
  --font-ui: "Source Sans 3", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #f8fbff 0%, #f4f7fb 100%);
  color: var(--text);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body[data-mode="platform"] {
  background: linear-gradient(180deg, #f7faff 0%, #f1f6fd 100%);
}
a { color: inherit; }
button, select, input { font: inherit; }

.material-symbols-outlined {
  font-family: "Material Symbols Outlined";
  font-weight: normal;
  font-style: normal;
  font-size: 22px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

.skip-link {
  position: fixed;
  left: 18px;
  top: -56px;
  z-index: 2000;
  display: inline-flex;
  align-items: center;
  padding: 12px 14px;
  border-radius: 14px;
  background: #0b1736;
  color: #ffffff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
  transition: top .18s ease;
}
.skip-link:focus-visible { top: 18px; }
button:focus-visible,
a:focus-visible,
select:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .32);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
  z-index: 40;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 392px 1fr;
}

.shell-rails {
  position: sticky;
  top: 0;
  height: 100vh;
  display: grid;
  grid-template-columns: 108px 284px;
  background: linear-gradient(180deg, #eef3f8 0%, #edf2f7 100%);
  border-right: 1px solid var(--line);
  overflow: hidden;
  z-index: 50;
}

.rail {
  overflow: auto;
  display: grid;
  align-content: start;
}
.rail-primary {
  padding: 22px 12px 18px;
  gap: 18px;
  background: linear-gradient(180deg, rgba(234,241,248,.99) 0%, rgba(236,242,248,.99) 100%);
  border-right: 1px solid var(--line);
}
.rail-secondary {
  padding: 24px 18px 22px;
  gap: 14px;
  background: linear-gradient(180deg, rgba(247,251,255,.98) 0%, rgba(244,248,252,.98) 100%);
}
body[data-mode="platform"] .rail-primary {
  background: linear-gradient(180deg, #edf4ff 0%, #e9f1fd 100%);
}
body[data-mode="platform"] .rail-secondary {
  background: linear-gradient(180deg, rgba(247,250,255,.98) 0%, rgba(241,246,253,.98) 100%);
}

.brand-stack h1,
.topbar-title,
.workspace-hero h2,
.stage-title,
.panel-title,
.summary-card h4,
.insight-card h4,
.governance-card h4,
.empty-card h4,
.rail-card strong {
  margin: 0;
  color: #0b1736;
  font-weight: 800;
  letter-spacing: -.04em;
}
.brand-stack h1 {
  font-size: 24px;
  line-height: 1;
}
.brand-stack p,
.rail-card p,
.topbar-subtitle,
.workspace-hero p,
.stage-subtitle,
.toolbar-copy p,
.summary-card p,
.insight-card p,
.governance-card p,
.empty-card p,
.table td,
.nav-empty,
.toast span {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.brand-mark {
  width: 58px;
  height: 58px;
  border-radius: 20px;
  background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.06em;
  box-shadow: var(--shadow-md);
  margin: 0 auto;
}

.context-card,
.rail-note {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.88);
  border-radius: 22px;
  box-shadow: var(--shadow-sm);
}

.context-card {
  padding: 16px;
}

.context-title {
  margin: 0 0 8px;
  font-size: 30px;
  line-height: .98;
  letter-spacing: -.07em;
  color: #0b1736;
  font-weight: 800;
}

.context-text,
.rail-note p {
  margin: 0;
  color: var(--muted-2);
  font-size: 14px;
  line-height: 1.72;
}

.rail-label--compact {
  margin: 2px 0 0;
  font-size: 10px;
}

.rail-footer {
  margin-top: auto;
  display: grid;
  gap: 10px;
}

.mini-button {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 10px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.76);
  color: var(--text-soft);
  font-weight: 700;
}

.eyebrow,
.rail-label,
.section-kicker,
.topbar-kicker,
.toolbar-kicker,
.mode-chip,
.meta-pill,
.status-pill,
.tag,
.ghost-badge,
.stage-tags span,
.chip,
.table th {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: 800;
}
.eyebrow,
.rail-label,
.section-kicker,
.topbar-kicker,
.toolbar-kicker {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 8px;
}
.brand-stack .eyebrow,
.workspace-hero .eyebrow,
.mode-chip,
.chip,
.tag,
.ghost-badge,
.stage-tags span,
.status-pill,
.meta-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 10px;
}
.brand-stack .eyebrow,
.workspace-hero .eyebrow,
.mode-chip,
.chip,
.tag,
.stage-tags span {
  padding: 7px 10px;
  border: 1px solid #d7e4fb;
  background: var(--blue-soft-2);
  color: var(--blue);
}
.ghost-badge,
.meta-pill {
  padding: 6px 9px;
  border: 1px solid var(--line);
  background: #ffffff;
  color: #64748b;
}
.status-pill {
  padding: 6px 9px;
}
.status-pill.success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.status-pill.warning { background: #fff7ed; color: #b45309; border: 1px solid #fed7aa; }
.status-pill.neutral { background: #f8fafc; color: #475569; border: 1px solid #dbe5ef; }

.rail-card,
.topbar,
.workspace-hero,
.stage-shell,
.metric-card,
.summary-card,
.insight-card,
.governance-card,
.empty-card,
.table-shell,
.toast {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.9);
  border-radius: 22px;
  box-shadow: var(--shadow-sm);
}
.rail-card,
.metric-card,
.summary-card,
.insight-card,
.governance-card,
.empty-card {
  padding: 16px;
}

.nav-list {
  display: grid;
  gap: 8px;
}
.nav-form { margin: 0; }
.system-item,
.module-item,
.mode-btn,
.state-btn,
.primary-action,
.menu-toggle {
  appearance: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: .18s ease;
}
.system-item,
.module-item {
  width: 100%;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 10px;
  border-radius: 16px;
  background: transparent;
  position: relative;
  color: var(--text-soft);
}
.system-item:hover,
.module-item:hover,
.mode-btn:hover,
.state-btn:hover,
.primary-action:hover,
.menu-toggle:hover {
  background: rgba(255,255,255,.72);
  color: var(--blue);
}
.system-item.active,
.module-item.active,
.mode-btn.active,
.state-btn.active {
  background: linear-gradient(180deg, #f8fbff 0%, #edf4ff 100%);
  color: var(--blue);
  box-shadow: inset 0 0 0 1px #d7e4fb;
}
.system-item.active::before,
.module-item.active::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 7px;
  bottom: 7px;
  width: 2px;
  border-radius: 999px;
  background: var(--blue);
}
.system-left,
.module-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.system-icon,
.module-icon,
.user-avatar,
.menu-toggle {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--blue);
  flex: 0 0 auto;
}
.module-icon {
  width: 28px;
  height: 28px;
  background: #f7fbff;
  border-color: #d7e4fb;
}
.system-copy strong,
.module-copy strong {
  display: block;
  font-size: 12px;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-empty {
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--line-soft);
  background: #fff;
}

.nav-list--systems {
  gap: 10px;
}

.rail-primary .system-item {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 12px 6px;
  border-radius: 18px;
  border: 1px solid transparent;
}

.rail-primary .system-left {
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.rail-primary .system-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(255,255,255,.74);
  color: var(--text-soft);
}

.rail-primary .system-copy strong {
  font-size: 11px;
  line-height: 1.2;
  text-align: center;
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
}

.rail-primary .meta-pill,
.rail-primary .system-item::before {
  display: none;
}

.rail-primary .system-item.active {
  background: rgba(255,255,255,.68);
  border-color: #d7e4fb;
  color: var(--blue);
  box-shadow: none;
}

.rail-primary .system-item.active .system-icon,
.rail-primary .system-item:hover .system-icon {
  background: var(--blue-soft-2);
  color: var(--blue);
  border-color: #d7e4fb;
}

.nav-list--secondary {
  padding: 8px;
  gap: 6px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.88);
  border-radius: 22px;
  box-shadow: var(--shadow-sm);
}

.rail-secondary .module-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 16px;
}

.rail-secondary .module-left {
  gap: 12px;
}

.rail-secondary .module-icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line-soft);
  color: inherit;
}

.rail-secondary .module-copy strong {
  font-size: 15px;
  line-height: 1.2;
}

.rail-note {
  padding: 14px 16px;
}

.rail-note strong {
  display: block;
  color: #0b1736;
  font-size: 14px;
  line-height: 1.2;
  margin-bottom: 4px;
}

.shell-main {
  min-width: 0;
  padding: 18px 18px 28px;
}
.topbar {
  position: sticky;
  top: 14px;
  z-index: 15;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  margin-bottom: 22px;
  background: rgba(255,255,255,.84);
  backdrop-filter: blur(12px);
  flex-wrap: wrap;
}
.topbar-main { display: flex; align-items: flex-start; gap: 12px; min-width: 280px; }
.topbar-title { font-size: 22px; line-height: 1.02; }
.topbar-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.mode-switch,
.scenario-group { display: flex; gap: 6px; flex-wrap: wrap; }
.mode-switch form,
.scenario-group form { margin: 0; }
.mode-btn,
.state-btn,
.primary-action {
  padding: 10px 12px;
  border-radius: 14px;
  background: #fff;
  color: #475569;
  font-size: 13px;
  font-weight: 700;
}
.primary-action {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.primary-action:hover { background: #1d4ed8; color: #fff; }
.scope-wrap {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fff;
}
.scope-wrap label,
.topbar-user strong {
  color: #0b1736;
  font-size: 14px;
  font-weight: 800;
}
.scope-wrap select {
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: #f8fbff;
  padding: 8px 10px;
}
.scope-wrap small,
.topbar-user span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}
.topbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fff;
}
.user-avatar {
  background: var(--blue-soft-2);
  border-color: #d7e4fb;
  font-weight: 800;
}
.menu-toggle { display: none; }

.workspace-hero {
  padding: 28px 28px 22px;
  margin-bottom: 20px;
  background: radial-gradient(circle at top right, rgba(37,99,235,.07), transparent 30%), linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
}
.workspace-hero h2 {
  font-size: 48px;
  line-height: .96;
  margin-bottom: 10px;
  max-width: 900px;
}
.workspace-hero p { max-width: 900px; }
.hero-chips,
.chip-row,
.stage-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.stage-shell {
  padding: 22px;
  background: rgba(255,255,255,.94);
  box-shadow: var(--shadow-md);
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}
.breadcrumb.active { color: var(--blue); font-weight: 700; }
.stage-title-wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.stage-title { font-size: 32px; line-height: 1.02; margin-bottom: 8px; }
.toolbar-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  flex-wrap: wrap;
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  background: linear-gradient(180deg, #fbfdff 0%, #f9fbff 100%);
}
.toolbar-copy strong {
  display: block;
  color: #0b1736;
  font-size: 16px;
  line-height: 1.2;
  margin-bottom: 4px;
}
.toolbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.stage-body {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}
.governance-grid,
.summary-grid,
.quick-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.insight-grid { display: grid; gap: 16px; grid-template-columns: 1fr 1.1fr; }
.icon-head {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}
.metric-card span,
.summary-card span,
.table th {
  display: block;
  font-size: 10px;
  color: var(--muted);
  margin-bottom: 8px;
}
.metric-card strong {
  display: block;
  color: #0b1736;
  font-size: 26px;
  line-height: 1;
  letter-spacing: -.05em;
  margin-bottom: 6px;
}
.table-shell {
  overflow: hidden;
  background: #fff;
}
.table { width: 100%; border-collapse: collapse; }
.table th,
.table td {
  text-align: left;
  vertical-align: top;
  padding: 14px 16px;
  border-bottom: 1px solid #ebf0f6;
}
.table thead th { background: #f8fbff; font-size: 11px; color: #64748b; }
.table tbody tr:last-child td { border-bottom: none; }
.table strong { color: #0b1736; }
.placeholder-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  flex-wrap: wrap;
  padding: 18px 18px 0;
}
.panel-title { font-size: 26px; line-height: 1.04; margin-bottom: 8px; }
.panel-text { color: var(--muted-2); font-size: 15px; line-height: 1.8; margin: 0; max-width: 840px; }
.empty-card--focus {
  padding: 24px;
  display: grid;
  gap: 12px;
  justify-items: start;
}

.toast {
  display: inline-flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
}
.toast strong { color: #0b1736; font-size: 14px; }
.toast-inline { margin-bottom: 18px; }
.toast-danger { border-color: #fecaca; background: #fff5f5; }
.toast-info { border-color: #dbeafe; background: #f8fbff; }

@media (max-width: 1180px) {
  .app-shell { grid-template-columns: 1fr; }
  .shell-rails {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(392px, 100vw);
    transform: translateX(-100%);
    transition: transform .18s ease;
  }
  body.sidebar-open .shell-rails { transform: translateX(0); }
  body.sidebar-open .overlay { opacity: 1; pointer-events: auto; }
  .shell-main { padding: 18px 16px 26px; }
  .context-title { font-size: 28px; }
  .menu-toggle { display: inline-flex; }
  .governance-grid,
  .summary-grid,
  .quick-grid,
  .insight-grid { grid-template-columns: 1fr; }
  .workspace-hero h2 { font-size: 40px; }
}

@media (max-width: 760px) {
  .topbar { top: 0; border-radius: 0 0 18px 18px; }
  .workspace-hero,
  .stage-shell { padding: 18px; }
  .workspace-hero h2 { font-size: 34px; }
  .stage-title { font-size: 28px; }
  .shell-rails { grid-template-columns: 88px minmax(0, 1fr); }
  .rail-primary { padding: 16px 10px 14px; }
  .rail-secondary { padding: 18px 14px 16px; }
  .context-title { font-size: 26px; }
  .toolbar-row,
  .placeholder-head,
  .topbar-actions,
  .topbar-main { width: 100%; }
  .topbar-actions { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}