:root {
  --color-graphite: #1a1d20;
  --color-warm-beige: #f5f0eb;
  --color-burnt-orange: #c84b1a;
  --color-burnt-orange-hover: #b03e12;
  --color-forest-green: #244832;
  --color-forest-green-light: #e8efe9;
  --color-off-white: #fdfcfb;
  --color-steel-grey: #66727d;
  --color-steel-light: #dbe1e6;
  --color-border: #1a1d20;
  --color-focus: #c84b1a;
  
  --shadow-neo: 4px 4px 0px #1a1d20;
  --shadow-neo-sm: 2px 2px 0px #1a1d20;
  --shadow-neo-lg: 6px 6px 0px #1a1d20;
  --shadow-neo-active: 1px 1px 0px #1a1d20;
  
  --space-4: 4px;
  --space-8: 8px;
  --space-16: 16px;
  --space-24: 24px;
  --space-40: 40px;
  --space-64: 64px;

  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  background-color: var(--color-warm-beige);
  color: var(--color-graphite);
  font-family: var(--font-sans);
  line-height: 1.6;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-warm-beige);
  color: var(--color-graphite);
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-burnt-orange);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-burnt-orange-hover);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-graphite);
  line-height: 1.25;
  font-weight: 800;
  overflow-wrap: anywhere;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p, li, dl, dd {
  font-size: 1rem;
  overflow-wrap: anywhere;
}

/* Accessibility Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-burnt-orange);
  outline-offset: 2px;
}

/* Slim & Simple Header */
.site-header {
  height: 46px;
  background-color: var(--color-off-white);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  position: relative;
  z-index: 100;
}

.header-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--color-graphite);
  text-decoration: none;
  overflow-wrap: anywhere;
  min-width: 0;
}

.brand-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.brand-text {
  letter-spacing: -0.2px;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 4px;
  align-items: center;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--color-graphite);
  text-decoration: none;
  padding: 3px 7px;
  border: 1px solid transparent;
  transition: background 0.15s ease;
}

.nav-link:hover {
  background-color: var(--color-warm-beige);
  border-color: var(--color-border);
}

.nav-link[aria-current="page"] {
  background-color: var(--color-forest-green-light);
  border-color: var(--color-forest-green);
  color: var(--color-forest-green);
}

.header-cta {
  background-color: var(--color-burnt-orange);
  color: var(--color-off-white);
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 700;
  font-family: var(--font-mono);
  padding: 4px 10px;
  border: 1.5px solid var(--color-border);
  box-shadow: 1px 1px 0px #1a1d20;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.header-cta:hover {
  background-color: var(--color-burnt-orange-hover);
  color: var(--color-off-white);
}

/* Nav toggle button */
.nav-toggle {
  display: none;
  background: var(--color-off-white);
  border: 1.5px solid var(--color-border);
  padding: 3px;
  cursor: pointer;
  box-shadow: 1px 1px 0px #1a1d20;
  line-height: 0;
}

.nav-toggle-icon {
  width: 18px;
  height: 18px;
}

/* Main Container Layouts */
.main-content {
  flex: 1;
  width: 100%;
}

.page-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-40) var(--space-16) var(--space-64);
}

.content-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: var(--space-40) var(--space-16) var(--space-64);
}

/* Neo-Brutalist Utility Badges & Tags */
.badge-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 6px;
  border: 1.5px solid var(--color-border);
  background-color: var(--color-warm-beige);
  color: var(--color-graphite);
  box-shadow: var(--shadow-neo-sm);
}

.badge-tag.orange {
  background-color: var(--color-burnt-orange);
  color: var(--color-off-white);
}

.badge-tag.green {
  background-color: var(--color-forest-green);
  color: var(--color-off-white);
}

.badge-tag.grey {
  background-color: var(--color-steel-light);
  color: var(--color-graphite);
}

/* Card Style: DATA GRID */
.data-grid-card {
  background-color: var(--color-off-white);
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow-neo);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  min-width: 0;
}

.data-grid-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-neo-lg);
}

.card-data-header {
  background-color: var(--color-graphite);
  color: var(--color-off-white);
  border-bottom: 3px solid var(--color-border);
  padding: var(--space-16);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  text-align: center;
}

.card-stat-unit {
  border-right: 1px dashed var(--color-steel-grey);
  padding: 0 var(--space-4);
  min-width: 0;
}

.card-stat-unit:last-child {
  border-right: none;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-warm-beige);
  display: block;
  overflow-wrap: anywhere;
}

.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-steel-light);
  margin-top: 12px;
  display: block;
}

.card-body {
  padding: var(--space-24);
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.card-body h3 {
  margin-bottom: var(--space-16);
}

.card-body p {
  color: var(--color-graphite);
  margin-bottom: var(--space-24);
  flex: 1;
}

.card-action-bar {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 2px dashed var(--color-steel-light);
  padding-top: var(--space-16);
}

.btn-card {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--color-burnt-orange);
  text-decoration: none;
  border-bottom: 1.5px solid var(--color-burnt-orange);
}

.btn-card:hover {
  color: var(--color-burnt-orange-hover);
  border-bottom-color: var(--color-burnt-orange-hover);
}

/* Hero Section */
.hero-section {
  border-bottom: 3px solid var(--color-border);
  background-color: var(--color-warm-beige);
  padding: var(--space-64) var(--space-16);
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-40);
  align-items: center;
}

.hero-text {
  min-width: 0;
}

.hero-text h1 {
  font-size: 2.75rem;
  letter-spacing: -1px;
  margin: var(--space-16) 0;
  line-height: 1.15;
}

.hero-lead {
  font-size: 1.15rem;
  margin-bottom: var(--space-24);
  color: #333a40;
}

.hero-buttons {
  display: flex;
  gap: var(--space-16);
  flex-wrap: wrap;
}

/* Small Button Text Across All Buttons */
button {
  font-size: 0.75rem;
}

.btn-primary {
  background-color: var(--color-burnt-orange);
  color: var(--color-off-white);
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.4px;
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-neo-sm);
  text-decoration: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary:hover {
  background-color: var(--color-burnt-orange-hover);
  color: var(--color-off-white);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-neo);
}

.btn-secondary {
  background-color: var(--color-off-white);
  color: var(--color-graphite);
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.4px;
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-neo-sm);
  text-decoration: none;
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: var(--color-warm-beige);
  color: var(--color-graphite);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-neo);
}

/* Blueprint Interactive Visualization */
.blueprint-card {
  background-color: #172430;
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow-neo-lg);
  padding: var(--space-24);
  color: #b0d4f1;
  position: relative;
  min-width: 0;
}

.blueprint-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #2d455d;
  padding-bottom: var(--space-16);
  margin-bottom: var(--space-16);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #7bb5e2;
}

.blueprint-canvas {
  width: 100%;
  height: auto;
  border: 1px dashed #3a5c7c;
  background-color: #101c26;
  background-image: linear-gradient(rgba(45, 69, 93, 0.4) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(45, 69, 93, 0.4) 1px, transparent 1px);
  background-size: 20px 20px;
}

.blueprint-step-controls {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-16);
  flex-wrap: wrap;
}

.step-btn {
  background: #1e3347;
  color: #d1e7fc;
  border: 1.5px solid #3d6083;
  padding: 4px 8px;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.3px;
}

.step-btn:hover, .step-btn.is-active {
  background: var(--color-burnt-orange);
  color: var(--color-off-white);
  border-color: #ffffff;
}

/* Dashboard Section */
.dashboard-section {
  border-bottom: 3px solid var(--color-border);
  background-color: var(--color-off-white);
  padding: var(--space-64) var(--space-16);
}

.dashboard-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-head {
  margin-bottom: var(--space-40);
  border-left: 6px solid var(--color-burnt-orange);
  padding-left: var(--space-16);
}

.section-head h2 {
  font-size: 2rem;
  letter-spacing: -0.5px;
}

.section-head p {
  color: var(--color-steel-grey);
  margin-top: var(--space-8);
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-40);
  align-items: flex-start;
}

.calc-controls {
  background: var(--color-warm-beige);
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow-neo);
  padding: var(--space-24);
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.control-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
}

.control-input-range {
  width: 100%;
  accent-color: var(--color-burnt-orange);
  cursor: pointer;
}

.control-select, .control-input {
  width: 100%;
  padding: 10px 12px;
  border: 2px solid var(--color-border);
  background-color: var(--color-off-white);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-graphite);
}

.calc-readout {
  background: var(--color-graphite);
  color: var(--color-off-white);
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow-neo);
  padding: var(--space-24);
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.readout-banner {
  border-bottom: 2px solid var(--color-steel-grey);
  padding-bottom: var(--space-16);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.total-weight-display {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-warm-beige);
}

.readout-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-16);
}

.metric-box {
  background: #252a2f;
  border: 2px solid var(--color-steel-grey);
  padding: var(--space-16);
}

.metric-box .label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  font-family: var(--font-mono);
  color: var(--color-steel-light);
  margin-bottom: 12px;
}

.metric-box .val {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-off-white);
}

.status-badge {
  padding: var(--space-8) var(--space-16);
  font-family: var(--font-mono);
  font-weight: 800;
  text-align: center;
  border: 2px solid var(--color-border);
}

.status-badge.ok {
  background-color: var(--color-forest-green);
  color: var(--color-off-white);
}

.status-badge.alert {
  background-color: var(--color-burnt-orange);
  color: var(--color-off-white);
}

.calc-disclaimer {
  font-size: 0.8rem;
  color: var(--color-steel-light);
  font-style: italic;
  border-top: 1px dashed var(--color-steel-grey);
  padding-top: var(--space-16);
}

/* Card Showcase Grid */
.cards-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-64) var(--space-16);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-40);
  margin-top: var(--space-40);
}

/* Supporting Technical Info Section */
.info-section {
  background-color: var(--color-off-white);
  border-top: 3px solid var(--color-border);
  padding: var(--space-64) var(--space-16);
}

.info-container {
  max-width: 1200px;
  margin: 0 auto;
}

.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-24);
  margin-top: var(--space-24);
}

.standard-card {
  border: 2px solid var(--color-border);
  padding: var(--space-24);
  background-color: var(--color-warm-beige);
  box-shadow: var(--shadow-neo-sm);
}

.standard-card h3 {
  margin-bottom: var(--space-8);
  font-size: 1.15rem;
}

/* Sub-page Specific Styles */
.article-header {
  border-bottom: 3px solid var(--color-border);
  padding-bottom: var(--space-24);
  margin-bottom: var(--space-40);
}

.article-header h1 {
  font-size: 2.4rem;
  margin: var(--space-16) 0 var(--space-8);
}

.article-meta-bar {
  display: flex;
  gap: var(--space-16);
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-steel-grey);
}

.article-content {
  background-color: var(--color-off-white);
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow-neo);
  padding: var(--space-40);
}

.article-content h2 {
  font-size: 1.6rem;
  margin-top: var(--space-40);
  margin-bottom: var(--space-16);
  padding-bottom: var(--space-8);
  border-bottom: 2px solid var(--color-border);
}

.article-content h2:first-of-type {
  margin-top: 0;
}

.article-content h3 {
  font-size: 1.25rem;
  margin-top: var(--space-24);
  margin-bottom: var(--space-8);
}

.article-content p {
  margin-bottom: var(--space-16);
  line-height: 1.7;
}

.article-content ul, .article-content ol {
  margin-bottom: var(--space-24);
  padding-left: var(--space-24);
}

.article-content li {
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.callout-box {
  background-color: var(--color-warm-beige);
  border-left: 6px solid var(--color-burnt-orange);
  border-top: 2px solid var(--color-border);
  border-right: 2px solid var(--color-border);
  border-bottom: 2px solid var(--color-border);
  padding: var(--space-24);
  margin: var(--space-24) 0;
}

.callout-box.green {
  border-left-color: var(--color-forest-green);
  background-color: var(--color-forest-green-light);
}

.callout-title {
  font-family: var(--font-mono);
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: var(--space-8);
  font-size: 0.95rem;
}

.data-table-wrapper {
  overflow-x: auto;
  margin: var(--space-24) 0;
  border: 2px solid var(--color-border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  text-align: left;
  background: var(--color-off-white);
  min-width: 500px;
}

.data-table th, .data-table td {
  padding: 12px var(--space-16);
  border-bottom: 1px solid var(--color-steel-light);
}

.data-table th {
  background: var(--color-graphite);
  color: var(--color-off-white);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
}

.data-table tr:last-child td {
  border-bottom: none;
}

/* Contact Page Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-40);
  align-items: flex-start;
}

.contact-card {
  background-color: var(--color-off-white);
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow-neo);
  padding: var(--space-40);
}

.form-group {
  margin-bottom: var(--space-24);
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: var(--space-8);
}

.form-control {
  padding: 12px;
  border: 2px solid var(--color-border);
  background: var(--color-warm-beige);
  color: var(--color-graphite);
  font-family: var(--font-sans);
  font-size: 1rem;
}

.form-control:focus {
  background: var(--color-off-white);
}

.form-control.is-invalid {
  border-color: #d32f2f;
  background-color: #ffebee;
}

.form-error {
  display: none;
  color: #c84b1a;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-top: var(--space-4);
}

.form-error.is-visible {
  display: block;
}

.form-status {
  padding: var(--space-16);
  border: 2px solid var(--color-forest-green);
  background: var(--color-forest-green-light);
  color: var(--color-forest-green);
  font-family: var(--font-mono);
  font-weight: 700;
  margin-top: var(--space-16);
}

/* Static Map Block */
.static-map-box {
  background-color: #202b33;
  border: 2px solid var(--color-border);
  padding: var(--space-24);
  color: var(--color-warm-beige);
  margin-top: var(--space-24);
}

.map-svg-mockup {
  width: 100%;
  height: 200px;
  background-color: #172128;
  border: 1px dashed var(--color-steel-grey);
  margin-top: var(--space-16);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Footer */
.site-footer {
  background-color: var(--color-graphite);
  color: var(--color-off-white);
  border-top: 4px solid var(--color-border);
  padding: var(--space-64) var(--space-16) var(--space-40);
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-40);
  padding-bottom: var(--space-40);
  border-bottom: 1px solid #333a40;
}

.footer-col h4 {
  color: var(--color-warm-beige);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  margin-bottom: var(--space-16);
  text-transform: uppercase;
}

.footer-col p {
  color: var(--color-steel-light);
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: var(--space-8);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.footer-links a {
  color: var(--color-steel-light);
  font-size: 0.85rem;
  text-decoration: none;
}

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

.footer-bottom {
  padding-top: var(--space-24);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-16);
  font-size: 0.8rem;
  color: var(--color-steel-grey);
}

.footer-bottom a {
  color: var(--color-steel-light);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-graphite);
  color: var(--color-off-white);
  border-top: 3px solid var(--color-burnt-orange);
  padding: var(--space-16) var(--space-24);
  z-index: 1000;
  box-shadow: 0 -4px 10px rgba(0,0,0,0.3);
}

.cookie-banner[hidden] {
  display: none !important;
}

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-24);
  flex-wrap: wrap;
}

.cookie-text {
  flex: 1;
  min-width: 280px;
}

.cookie-text p {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--color-warm-beige);
}

.cookie-actions {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.btn-cookie {
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  border: 1.5px solid var(--color-off-white);
  cursor: pointer;
  background: transparent;
  color: var(--color-off-white);
  letter-spacing: 0.3px;
}

.btn-cookie.primary {
  background: var(--color-burnt-orange);
  border-color: var(--color-burnt-orange);
  color: var(--color-off-white);
}

.btn-cookie.secondary {
  background: var(--color-warm-beige);
  border-color: var(--color-warm-beige);
  color: var(--color-graphite);
}

/* Mobile Nav Overlay & Responsive Rules */
@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .calc-grid {
    grid-template-columns: 1fr;
  }
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --shadow-neo: 3px 3px 0px #1a1d20;
    --shadow-neo-lg: 4px 4px 0px #1a1d20;
  }

  .site-header {
    height: 44px;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 44px;
    left: 0;
    right: 0;
    background: var(--color-off-white);
    border-bottom: 2px solid var(--color-border);
    padding: var(--space-16);
    box-shadow: var(--shadow-neo);
  }

  .main-nav.is-visible {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-8);
  }

  .nav-link {
    display: block;
    width: 100%;
    font-size: 0.85rem;
    padding: 6px var(--space-8);
  }

  .header-cta {
    display: none;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .article-content {
    padding: var(--space-24) var(--space-16);
  }

  .hero-section {
    padding: var(--space-40) var(--space-16);
  }

  .hero-text h1 {
    font-size: 2rem;
  }
}

/* Breakpoint below 400px */
@media (max-width: 399px) {
  .card-data-header {
    grid-template-columns: 1fr;
    gap: var(--space-16);
  }
  .card-stat-unit {
    border-right: none;
    border-bottom: 1px dashed var(--color-steel-grey);
    padding-bottom: var(--space-8);
  }
  .card-stat-unit:last-child {
    border-bottom: none;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .btn-primary, .btn-secondary {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
  .readout-metrics {
    grid-template-columns: 1fr;
  }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}