/* ==========================================================================
   Closeloop — Design System & Stylesheet (High-Precision Financial Terminal)
   Continuous Financial Close & Real-Time Subledger Reconciliation
   
   Design tokens:
   - Background: #F6F7F9 (cool paper-white with blue-grey tint)
   - Ink: #1B2733 (deep slate-navy)
   - Accent Reconciled/Balanced: #1F7A4D (forest green)
   - Accent Exception/Flag: #B5651D (muted rust)
   - Surface: #FFFFFF (ledger paper)
   - Ruled lines: #D7DEE5 / #CAD3DC / #B8C4D0
   - Tabular figures: tabular-nums throughout all numerical output
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700;800&family=Source+Sans+3:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* Surface & Background */
  --bg: #F6F7F9;
  --surface: #FFFFFF;
  --surface-sub: #EEF2F6;
  --surface-alt: #F3F6F9;
  --surface-stripe: #F8FAFD;
  
  /* Ink & Typography */
  --ink: #1B2733;
  --ink-secondary: #4A5868;
  --ink-muted: #6B7B8D;
  --ink-faint: #9AA7B5;
  
  /* Ruled Lines & Ledger Grid */
  --rule: #D7DEE5;
  --rule-light: #E7ECF1;
  --rule-strong: #B4C1CF;
  
  /* Functional Accent: Reconciled / Balanced (Forest Green) */
  --reconciled: #1F7A4D;
  --reconciled-tint: #EBF5F0;
  --reconciled-border: #9DC7B1;
  --reconciled-deep: #165E3A;
  
  /* Functional Accent: Exception / Variance Flag (Muted Rust) */
  --exception: #B5651D;
  --exception-tint: #FAF2EC;
  --exception-border: #DFB795;
  --exception-deep: #8E4C12;
  
  /* Typography */
  --font-head: 'Archivo', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  /* Layout */
  --container-width: 1220px;
  --container-narrow: 860px;
  --header-height: 68px;
  --radius-sm: 3px;
  --radius-md: 4px;
}

/* Tabular numbers for all financial & numerical data */
.num,
.tabular,
table,
.ledger-cell,
.metric-value,
.code-inline,
.stat-num,
.pricing-price,
.calc-output-value {
  font-variant-numeric: tabular-nums lining-nums;
  -moz-font-feature-settings: "tnum" 1, "lnum" 1;
  -webkit-font-feature-settings: "tnum" 1, "lnum" 1;
  font-feature-settings: "tnum" 1, "lnum" 1;
}

/* Reset & Document Baseline */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  color: var(--ink);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.3rem, 4vw, 3.4rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.2rem;
}

h2 {
  font-size: clamp(1.75rem, 2.8vw, 2.3rem);
  letter-spacing: -0.025em;
  margin-bottom: 0.9rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.015em;
}

h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

p {
  color: var(--ink-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

p.lead {
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--ink);
}

a {
  color: var(--ink);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

/* Ruled Ledger Containers */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(246, 247, 249, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.brand-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-status-dot {
  width: 7px;
  height: 7px;
  background-color: var(--reconciled);
  border-radius: 50%;
  display: inline-block;
  margin-left: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-secondary);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Ruled Ledger Buttons (crisp 3px corners) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-sm {
  padding: 5px 12px;
  font-size: 0.82rem;
}

.btn-primary {
  background-color: var(--ink);
  color: #FFFFFF;
  border-color: var(--ink);
}

.btn-primary:hover {
  background-color: #2B3A49;
  border-color: #2B3A49;
  color: #FFFFFF;
}

.btn-outline {
  background-color: var(--surface);
  color: var(--ink);
  border-color: var(--rule-strong);
}

.btn-outline:hover {
  border-color: var(--ink);
  background-color: var(--surface-sub);
}

.btn-reconciled {
  background-color: var(--reconciled);
  color: #FFFFFF;
  border-color: var(--reconciled);
}

.btn-reconciled:hover {
  background-color: var(--reconciled-deep);
  border-color: var(--reconciled-deep);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--rule);
  padding: 7px 10px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.mobile-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--ink);
  margin: 3px 0;
}

/* Section styling with subtle micro-grid texture */
.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--rule);
  position: relative;
}

.section-hero {
  padding: 60px 0 76px 0;
  border-bottom: 1px solid var(--rule);
  background-color: var(--bg);
  background-image: 
    linear-gradient(to right, rgba(27, 39, 51, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 39, 51, 0.035) 1px, transparent 1px);
  background-size: 24px 24px;
}

.section-tight {
  padding: 48px 0;
  border-bottom: 1px solid var(--rule);
}

.section-head {
  margin-bottom: 44px;
}

.section-category {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-category::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 1px;
  background-color: var(--ink-faint);
}

/* Dense Financial Telemetry Ribbon (4-Stat Grid) */
.telemetry-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  margin-top: 28px;
  overflow: hidden;
}

.telemetry-cell {
  padding: 16px 20px;
  border-right: 1px solid var(--rule);
}

.telemetry-cell:last-child {
  border-right: none;
}

.telemetry-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.telemetry-value {
  font-family: var(--font-head);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 4px;
}

.telemetry-sub {
  font-size: 0.8rem;
  color: var(--ink-secondary);
}

/* Ledger Ruled Cards & Boxes */
.ledger-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 24px;
  position: relative;
}

.ledger-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--rule-light);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 2px;
  border: 1px solid transparent;
  line-height: 1.2;
}

.badge-reconciled {
  background-color: var(--reconciled-tint);
  color: var(--reconciled-deep);
  border-color: var(--reconciled-border);
}

.badge-exception {
  background-color: var(--exception-tint);
  color: var(--exception-deep);
  border-color: var(--exception-border);
}

.badge-neutral {
  background-color: var(--surface-sub);
  color: var(--ink-secondary);
  border-color: var(--rule);
}

.badge-code {
  background: transparent;
  color: var(--ink-muted);
  border: 1px solid var(--rule-light);
  font-size: 0.68rem;
  padding: 1px 5px;
}

/* Hero Ledger Table (Centerpiece) */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.hero-content {
  max-width: 940px;
}

.hero-subhead {
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--ink-secondary);
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

/* The Live Ledger Terminal Component */
.ledger-sheet {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px -4px rgba(27, 39, 51, 0.06);
  overflow: hidden;
  margin-top: 16px;
}

/* Terminal Telemetry Header Bar */
.ledger-terminal-bar {
  background-color: #16202A;
  color: #C2D0DE;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  border-bottom: 1px solid #2B3846;
  flex-wrap: wrap;
  gap: 10px;
}

.terminal-indicator-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.terminal-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #38C172;
  box-shadow: 0 0 6px #38C172;
}

.ledger-sheet-toolbar {
  background-color: var(--surface-sub);
  border-bottom: 1px solid var(--rule);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.ledger-sheet-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--ink);
}

.ledger-live-pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--reconciled);
  box-shadow: 0 0 0 2px var(--reconciled-tint);
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.ledger-toolbar-stats {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--ink-secondary);
}

/* Ledger Table Wrap with Sticky First Column & Scroll Mask */
.ledger-table-wrap {
  overflow-x: auto;
  width: 100%;
  position: relative;
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.ledger-table th {
  background-color: var(--surface-sub);
  color: var(--ink-secondary);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule-light);
  white-space: nowrap;
}

.ledger-table th:last-child {
  border-right: none;
}

.th-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.ledger-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--rule-light);
  border-right: 1px solid var(--rule-light);
  color: var(--ink);
  white-space: nowrap;
}

.ledger-table td:last-child {
  border-right: none;
}

/* Alternating Row Striping */
.ledger-table tbody tr:nth-child(even) {
  background-color: var(--surface-stripe);
}

.ledger-table tbody tr:nth-child(odd) {
  background-color: #FFFFFF;
}

.ledger-table tbody tr {
  cursor: pointer;
  transition: background-color 0.12s ease;
}

.ledger-table tbody tr:hover {
  background-color: #EEF4FA !important;
}

/* Reconciled Row Treatment */
.ledger-table tbody tr.row-matched .col-match {
  color: var(--reconciled-deep);
  font-weight: 600;
}

/* Exception Row Treatment (Muted Rust) */
.ledger-table tbody tr.row-exception {
  background-color: var(--exception-tint) !important;
  border-left: 3px solid var(--exception);
}

.ledger-table tbody tr.row-exception td {
  border-bottom-color: var(--exception-border);
  color: #482305;
}

.ledger-table tbody tr.row-exception .col-match {
  color: var(--exception-deep);
  font-weight: 700;
}

/* Exception Breakdown Equation Bar */
.ledger-exception-banner {
  background-color: #FFF6F0;
  border-top: 1px dashed var(--exception-border);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--exception-deep);
  flex-wrap: wrap;
  gap: 12px;
}

.exception-equation {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: #FFFFFF;
  border: 1px solid var(--exception-border);
  padding: 4px 10px;
  border-radius: 2px;
}

.exception-eq-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Transaction Audit Dossier (Slide-Out / Inspection Drawer) */
.audit-dossier-drawer {
  display: none;
  background: #FFFFFF;
  border-top: 2px solid var(--ink);
  padding: 24px;
  animation: slide-down 0.2s ease-out;
}

.audit-dossier-drawer.active {
  display: block;
}

@keyframes slide-down {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.dossier-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}

.dossier-raw-box {
  background: #16202A;
  color: #D3E0EA;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  padding: 14px;
  border-radius: 2px;
  overflow-x: auto;
  border: 1px solid #2B3846;
}

.dossier-meta-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.dossier-meta-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--rule-light);
}

.dossier-meta-table td:first-child {
  font-family: var(--font-mono);
  color: var(--ink-muted);
  width: 40%;
}

/* 3-Way Reconciliation Pipeline Architecture Diagram */
.pipeline-diagram {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 32px 24px;
  margin: 36px 0;
  position: relative;
}

.pipeline-nodes-grid {
  display: grid;
  grid-template-columns: 1fr 40px 1.3fr 40px 1fr;
  align-items: center;
  gap: 12px;
}

.pipeline-node {
  background: var(--surface-sub);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
}

.pipeline-node.center-engine {
  background: var(--ink);
  color: #FFFFFF;
  border-color: var(--ink);
}

.pipeline-node.center-engine h4 {
  color: #FFFFFF;
}

.pipeline-arrow {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--ink-faint);
  font-weight: 700;
}

/* Interactive ROI & Close-Cycle Savings Calculator */
.calc-card {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 4px 18px -4px rgba(27, 39, 51, 0.05);
}

.calc-header {
  background: var(--surface-sub);
  border-bottom: 1px solid var(--rule);
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.calc-body {
  padding: 32px 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.calc-slider-group {
  margin-bottom: 24px;
}

.calc-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.calc-slider-label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
}

.calc-slider-val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
}

.calc-slider {
  width: 100%;
  height: 6px;
  background: var(--rule);
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--ink);
  cursor: pointer;
  border: 2px solid #FFFFFF;
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}

.calc-results-pane {
  background: var(--surface-alt);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 24px;
}

.calc-metric-box {
  background: #FFFFFF;
  border: 1px solid var(--rule);
  padding: 16px;
  border-radius: 2px;
}

.calc-metric-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.calc-metric-value {
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.calc-metric-value.highlight {
  color: var(--reconciled-deep);
}

/* Interactive Exception Resolution Workbench (Product Page) */
.workbench-container {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 32px 0;
}

.workbench-toolbar {
  background: var(--surface-sub);
  border-bottom: 1px solid var(--rule);
  padding: 10px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.workbench-panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 380px;
}

.workbench-left-pane {
  border-right: 1px solid var(--rule);
  padding: 24px;
  background: #FCFDFF;
}

.workbench-right-pane {
  padding: 24px;
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.mock-invoice-box {
  background: #FFFFFF;
  border: 1px solid var(--rule);
  padding: 18px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
}

.mock-invoice-highlight {
  background-color: #FFF3E0;
  border-left: 3px solid var(--exception);
  padding: 6px 10px;
  margin: 8px 0;
  color: #743205;
}

/* Logo Strip */
.logo-strip-section {
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
  background-color: var(--surface);
}

.logo-strip-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
  text-align: center;
}

.logo-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.logo-item {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink-muted);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0.75;
}

/* Problem vs Solution Comparison Grid */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.comparison-col {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.comparison-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--rule);
}

.comparison-header.legacy {
  background-color: var(--surface-sub);
}

.comparison-header.continuous {
  background-color: var(--reconciled-tint);
  border-bottom-color: var(--reconciled-border);
}

.comparison-list {
  list-style: none;
  padding: 0;
}

.comparison-item {
  padding: 16px 24px;
  border-bottom: 1px solid var(--rule-light);
  display: flex;
  gap: 16px;
}

.comparison-item:last-child {
  border-bottom: none;
}

.comparison-item-icon {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  line-height: 1.5;
}

.comparison-item-icon.fail {
  color: var(--exception);
}

.comparison-item-icon.pass {
  color: var(--reconciled);
}

.comparison-item-title {
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 3px;
}

.comparison-item-desc {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  line-height: 1.5;
}

/* Feature 4-Pillar Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-cell {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 28px;
}

.feature-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.feature-title {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.feature-body {
  font-size: 0.98rem;
  color: var(--ink-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
}

.feature-ledger-snippet {
  background-color: var(--surface-sub);
  border: 1px solid var(--rule);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  border-radius: 2px;
  color: var(--ink);
}

/* Sequential How-It-Works (Real 4 Steps) */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.step-col {
  padding: 28px 20px;
  border-right: 1px solid var(--rule);
}

.step-col:last-child {
  border-right: none;
}

.step-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ink-muted);
  margin-bottom: 14px;
}

.step-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.step-text {
  font-size: 0.92rem;
  color: var(--ink-secondary);
  line-height: 1.5;
}

/* Interactive Flux Simulator Widget */
.simulator-box {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.simulator-head {
  background-color: var(--surface-sub);
  border-bottom: 1px solid var(--rule);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.simulator-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.simulator-btn {
  background: var(--surface);
  border: 1px solid var(--rule);
  padding: 6px 14px;
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 2px;
  color: var(--ink-secondary);
}

.simulator-btn.active {
  background: var(--ink);
  color: #FFFFFF;
  border-color: var(--ink);
}

.simulator-content {
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
}

.simulator-metrics-col {
  border-right: 1px solid var(--rule-light);
  padding-right: 24px;
}

.simulator-metric-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px dashed var(--rule);
  font-size: 0.92rem;
}

.simulator-metric-row:last-child {
  border-bottom: none;
}

.simulator-analysis-col {
  background: var(--surface-sub);
  border: 1px solid var(--rule);
  padding: 20px;
  border-radius: 2px;
}

.simulator-analysis-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.simulator-analysis-text {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 14px;
}

.simulator-journal-entry {
  background: #FFFFFF;
  border: 1px solid var(--rule);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border-radius: 2px;
}

/* Integrations Strip (Factual Compatibility Framing) */
.erp-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.erp-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  padding: 20px 16px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.erp-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 4px;
  color: var(--ink);
}

.erp-proto {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
}

/* Testimonials Grid */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-quote {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 20px;
}

.testimonial-author {
  border-top: 1px solid var(--rule-light);
  padding-top: 14px;
}

.testimonial-author-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.96rem;
  color: var(--ink);
}

.testimonial-author-title {
  font-size: 0.84rem;
  color: var(--ink-muted);
}

.testimonial-metric {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--reconciled-deep);
  margin-top: 6px;
}

/* Pricing Matrix & Cards */
.pricing-toggle-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
}

.pricing-switch {
  position: relative;
  width: 44px;
  height: 24px;
  background-color: var(--ink);
  border-radius: 12px;
  cursor: pointer;
}

.pricing-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background-color: #FFFFFF;
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.pricing-switch.annual::after {
  transform: translateX(20px);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.featured {
  border: 2px solid var(--ink);
}

.pricing-card-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--ink);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 2px;
  text-transform: uppercase;
}

.pricing-plan-name {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.pricing-plan-desc {
  font-size: 0.94rem;
  color: var(--ink-secondary);
  min-height: 48px;
  margin-bottom: 20px;
}

.pricing-rate {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--rule-light);
  padding-bottom: 20px;
}

.pricing-price {
  font-family: var(--font-head);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.03em;
}

.pricing-period {
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.pricing-features-list {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.pricing-features-list li {
  padding: 8px 0;
  font-size: 0.94rem;
  color: var(--ink);
  border-bottom: 1px solid var(--rule-light);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.pricing-features-list li:last-child {
  border-bottom: none;
}

.pricing-check {
  color: var(--reconciled);
  font-weight: 700;
  font-family: var(--font-mono);
}

/* Feature Comparison Table */
.matrix-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
}

.matrix-table th {
  background: var(--surface-sub);
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule-light);
  font-family: var(--font-head);
  font-weight: 700;
}

.matrix-table th:last-child {
  border-right: none;
}

.matrix-table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--rule-light);
  border-right: 1px solid var(--rule-light);
}

.matrix-table td:last-child {
  border-right: none;
}

.matrix-table tr.category-row td {
  background: var(--surface-alt);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 18px;
}

/* FAQ Accordion */
.faq-list {
  border-top: 1px solid var(--rule);
}

.faq-item {
  border-bottom: 1px solid var(--rule);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 22px 0;
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-toggle-icon {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--ink-muted);
}

.faq-answer {
  padding-bottom: 22px;
  display: none;
}

.faq-answer.open {
  display: block;
}

.faq-answer p {
  margin-bottom: 10px;
}

/* Final CTA Section */
.cta-banner {
  background: var(--ink);
  color: #FFFFFF;
  padding: 64px 48px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--ink);
}

.cta-banner h2 {
  color: #FFFFFF;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: 14px;
}

.cta-banner p {
  color: #BAC7D5;
  max-width: 620px;
  margin-bottom: 28px;
  font-size: 1.12rem;
}

.cta-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  transition: border-color 0.15s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 1px var(--ink);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin-top: 4px;
}

/* Authentication Pages */
.auth-wrapper {
  min-height: calc(100vh - var(--header-height) - 180px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
}

.auth-card {
  width: 100%;
  max-width: 480px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 36px;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  padding: 10px 0;
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-muted);
  cursor: pointer;
  text-align: center;
  border-bottom: 2px solid transparent;
}

.auth-tab.active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.auth-tab-content {
  display: none;
}

.auth-tab-content.active {
  display: block;
}

.sso-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 22px 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.sso-divider::before,
.sso-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--rule);
}

.sso-divider span {
  padding: 0 10px;
}

.sso-btn {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 10px;
  cursor: pointer;
}

.sso-btn:hover {
  background: var(--surface-sub);
}

/* Blog Index & Post Layouts */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.blog-card-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-muted);
  margin-bottom: 12px;
}

.blog-card-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
  line-height: 1.35;
}

.blog-card-title a:hover {
  text-decoration: underline;
}

.blog-card-excerpt {
  font-size: 0.94rem;
  color: var(--ink-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
}

/* Article Page Typography */
.article-header {
  padding: 48px 0 32px 0;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 40px;
}

.article-meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-muted);
  margin-bottom: 14px;
  display: flex;
  gap: 16px;
}

.article-body {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--ink);
}

.article-body h2 {
  font-size: 1.65rem;
  margin: 40px 0 16px 0;
  border-bottom: 1px solid var(--rule-light);
  padding-bottom: 8px;
}

.article-body h3 {
  font-size: 1.25rem;
  margin: 28px 0 12px 0;
}

.article-body p {
  margin-bottom: 20px;
  color: #2D3D4E;
}

.article-body ul,
.article-body ol {
  margin: 0 0 24px 28px;
  color: #2D3D4E;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.article-body blockquote {
  border-left: 3px solid var(--ink);
  padding: 12px 20px;
  margin: 28px 0;
  background: var(--surface-sub);
  font-style: italic;
  color: var(--ink);
}

.article-callout {
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  padding: 20px 24px;
  margin: 32px 0;
  border-radius: var(--radius-sm);
}

/* Legal Pages */
.legal-body {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  padding: 40px;
  margin: 40px 0;
}

.legal-section {
  margin-bottom: 36px;
}

.legal-section h2 {
  font-size: 1.35rem;
  border-bottom: 1px solid var(--rule-light);
  padding-bottom: 8px;
  margin-bottom: 14px;
}

.legal-section p {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--ink-secondary);
  margin-bottom: 12px;
}

.legal-highlight-box {
  background: var(--reconciled-tint);
  border: 1px solid var(--reconciled-border);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin: 20px 0;
  color: var(--reconciled-deep);
}

/* Footer */
.footer {
  margin-top: auto;
  background-color: var(--surface);
  border-top: 1px solid var(--rule);
  padding: 60px 0 36px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr;
  gap: 36px;
  margin-bottom: 48px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.15rem;
  margin-bottom: 14px;
  color: var(--ink);
}

.footer-tagline {
  font-size: 0.92rem;
  color: var(--ink-secondary);
  line-height: 1.55;
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--ink-secondary);
}

.footer-links a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--rule-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.84rem;
  color: var(--ink-muted);
}

.footer-security-badges {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.footer-security-pill {
  border: 1px solid var(--rule);
  padding: 3px 8px;
  border-radius: 2px;
  background: var(--surface-sub);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  
  .erp-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .telemetry-ribbon {
    grid-template-columns: 1fr 1fr;
  }
  
  .telemetry-cell:nth-child(2) {
    border-right: none;
  }
  
  .telemetry-cell:nth-child(1),
  .telemetry-cell:nth-child(2) {
    border-bottom: 1px solid var(--rule);
  }
  
  .pipeline-nodes-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .pipeline-arrow {
    transform: rotate(90deg);
  }
  
  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .step-col {
    border-bottom: 1px solid var(--rule);
  }
  
  .step-col:nth-child(2) {
    border-right: none;
  }
  
  .step-col:nth-child(3),
  .step-col:nth-child(4) {
    border-bottom: none;
  }
  
  .calc-body {
    grid-template-columns: 1fr;
  }
  
  .workbench-panes {
    grid-template-columns: 1fr;
  }
  
  .workbench-left-pane {
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--surface);
    border-bottom: 1px solid var(--rule);
    padding: 20px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .nav.open {
    display: flex;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .telemetry-ribbon {
    grid-template-columns: 1fr;
  }
  
  .telemetry-cell {
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }
  
  .telemetry-cell:last-child {
    border-bottom: none;
  }
  
  .comparison-grid,
  .features-grid,
  .testimonials-grid,
  .blog-grid,
  .simulator-content,
  .dossier-grid,
  .calc-metrics-grid {
    grid-template-columns: 1fr;
  }
  
  .simulator-metrics-col {
    border-right: none;
    border-bottom: 1px solid var(--rule-light);
    padding-right: 0;
    padding-bottom: 20px;
  }
  
  .steps-grid {
    grid-template-columns: 1fr;
  }
  
  .step-col {
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }
  
  .step-col:last-child {
    border-bottom: none;
  }
  
  .erp-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-banner {
    padding: 36px 24px;
  }
}