/* ── Design tokens ── */
:root {
  --color-bg: #f4f0ea;
  --color-bg-warm: #ebe4d8;
  --color-surface: #ffffff;
  --color-text: #1a1814;
  --color-text-muted: #5c564e;
  --color-text-light: #8a8278;
  --color-wood: #8b6f47;
  --color-wood-dark: #5c4a32;
  --color-primary: #e85d04;
  --color-primary-hover: #c44f03;
  --color-primary-light: #fef3eb;
  --color-accent: #2d4a3e;
  --color-accent-light: #e4ebe7;
  --color-concrete: #9ca3af;
  --color-border: #ddd6cb;
  --color-shadow: rgba(26, 24, 20, 0.1);

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --header-height: 72px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--color-text);
}

.section-subtitle,
.lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.section-subtitle {
  max-width: 680px;
  margin-top: var(--space-sm);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

.lead {
  margin-bottom: var(--space-md);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 20px rgba(232, 93, 4, 0.35);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  background: var(--color-primary);
  color: #fff;
  border-color: transparent;
}

.btn-sm:hover {
  background: var(--color-primary-hover);
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(244, 240, 234, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  border-color: var(--color-border);
  box-shadow: 0 2px 16px var(--color-shadow);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-text);
}

.logo-icon {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links a:not(.btn) {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.nav-links a:not(.btn):hover {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-xl);
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #6b7280 0%, #4b5563 40%, #374151 100%);
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image.broken {
  opacity: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(26, 24, 20, 0.55) 0%,
    rgba(26, 24, 20, 0.75) 60%,
    rgba(26, 24, 20, 0.85) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  text-align: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #fcd9b8;
  margin-bottom: var(--space-sm);
}

.name-origin {
  max-width: 640px;
  margin: 0 auto var(--space-md);
  padding: 0.875rem 1.25rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
}

.name-origin p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.9);
}

.name-origin-greek {
  font-family: var(--font-display);
  font-style: italic;
  opacity: 0.85;
}

.name-origin em {
  font-style: italic;
  color: #fcd9b8;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6.5vw, 4rem);
  font-weight: 400;
  line-height: 1.08;
  margin-bottom: var(--space-md);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: rgba(255, 255, 255, 0.88);
  max-width: 720px;
  margin: 0 auto var(--space-lg);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 120px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
}

.stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.25rem;
}

/* ── Vision / Before-after ── */
.vision {
  padding: var(--space-2xl) 0;
  background: var(--color-text);
  color: #fff;
}

.vision-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.vision .section-eyebrow {
  color: #fcd9b8;
}

.vision .section-title {
  color: #fff;
}

.vision .section-subtitle {
  color: rgba(255, 255, 255, 0.8);
  margin-left: auto;
  margin-right: auto;
}

.before-after {
  margin-bottom: var(--space-xl);
}

.before-after-slider {
  position: relative;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
  background: linear-gradient(145deg, #6b7280 0%, #374151 100%);
  user-select: none;
}

.before-after-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.before-after-after {
  z-index: 1;
}

.before-after-before {
  position: absolute;
  inset: 0;
  width: 50%;
  overflow: hidden;
  z-index: 2;
  border-right: 2px solid #fff;
}

.before-after-before .before-after-image {
  width: var(--compare-width, 100%);
  max-width: none;
  object-position: left center;
}

.before-after-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  background: #fff;
  z-index: 3;
  transform: translateX(-50%);
  pointer-events: none;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.35);
}

.before-after-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.before-after-handle::before,
.before-after-handle::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 0;
  height: 0;
  border-style: solid;
  transform: translateY(-50%);
}

.before-after-handle::before {
  left: 10px;
  border-width: 6px 8px 6px 0;
  border-color: transparent var(--color-primary) transparent transparent;
}

.before-after-handle::after {
  right: 10px;
  border-width: 6px 0 6px 8px;
  border-color: transparent transparent transparent var(--color-primary);
}

.before-after-range {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
  z-index: 4;
}

.before-after-label {
  position: absolute;
  top: var(--space-sm);
  z-index: 3;
  padding: 0.35rem 0.875rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  border-radius: var(--radius-full);
  pointer-events: none;
}

.before-after-label-left {
  left: var(--space-sm);
}

.before-after-label-right {
  right: var(--space-sm);
}

.before-after-caption {
  text-align: center;
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

.lease-flex {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.lease-flex-content h3 {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: 400;
  margin-bottom: var(--space-sm);
  color: #fff;
}

.lease-flex-content p {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

.lease-options li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.lease-options li:last-child {
  border-bottom: none;
}

.lease-options strong {
  display: block;
  font-size: 1rem;
  color: #fff;
  margin-bottom: 0.25rem;
}

.lease-options span {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

/* ── Problem ── */
.problem {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.problem-list {
  margin-top: var(--space-md);
}

.problem-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-text-muted);
}

.problem-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.problem-visual,
.deployment-visual,
.solution-showcase,
.gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(145deg, #d4c4b0 0%, #8b7355 50%, #5c4a32 100%);
  box-shadow: 0 16px 48px var(--color-shadow);
}

.problem-visual img,
.deployment-visual img,
.solution-showcase img,
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 280px;
}

.problem-visual img.broken,
.deployment-visual img.broken,
.solution-showcase img.broken,
.gallery-item img.broken {
  opacity: 0;
  min-height: 0;
  height: 0;
}

/* ── Solution ── */
.solution {
  padding: var(--space-2xl) 0;
  background: var(--color-bg);
}

.solution-showcase {
  margin-bottom: var(--space-xl);
  max-height: 480px;
}

.solution-showcase img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.components-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.component-card {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition);
}

.component-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px var(--color-shadow);
}

.component-card-wide {
  grid-column: span 3;
}

.component-tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.component-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
}

.component-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.tech-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.5rem 1.5rem;
  margin-top: 0.5rem;
}

.tech-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.tech-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

.tech-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

.inline-link {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.inline-link:hover {
  color: var(--color-primary-hover);
}

/* ── Energy Management Unit ── */
.energy {
  padding: var(--space-2xl) 0;
  background: var(--color-text);
  color: #fff;
}

.energy .section-eyebrow {
  color: #fcd9b8;
}

.energy .section-title {
  color: #fff;
}

.energy .lead,
.energy p {
  color: rgba(255, 255, 255, 0.82);
}

.energy-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-xl);
}

.energy-spec-callout {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
}

.energy-spec-value {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-primary);
}

.energy-spec-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.energy-hero-visual,
.energy-rack-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(145deg, #374151 0%, #1f2937 100%);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

.energy-hero-visual img,
.energy-rack-visual img,
.energy-gallery img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}

.energy-image-caption {
  padding: 0.75rem 1rem;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.55);
  background: rgba(0, 0, 0, 0.25);
}

.energy-image-caption code {
  font-size: 0.75rem;
  color: #fcd9b8;
}

.energy-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.energy-pillar {
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
}

.energy-pillar h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  color: #fff;
  margin-bottom: 0.75rem;
}

.energy-rack-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
}

.energy-rack-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: #fff;
  margin: 0.25rem 0 var(--space-sm);
}

.energy-module-list {
  display: grid;
  gap: 0.625rem;
}

.energy-module-list li {
  padding: 0.625rem 0.875rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.85);
}

.energy-thermal {
  margin-bottom: var(--space-xl);
}

.energy .section-subtitle {
  color: rgba(255, 255, 255, 0.75);
}

.energy-thermal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.energy-thermal-card {
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.05);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.energy-thermal-card h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 400;
  color: #fff;
  margin-bottom: 0.5rem;
}

.energy-impact {
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
}

.energy-impact-header h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: #fff;
  margin-top: 0.25rem;
  margin-bottom: var(--space-md);
}

.energy-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.energy-stat {
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  text-align: center;
}

.energy-stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: 0.375rem;
}

.energy-stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
}

.energy-impact-note {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  padding-top: var(--space-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.energy-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.energy-gallery img {
  border-radius: var(--radius-lg);
  min-height: 240px;
}

/* ── Structure & cost ── */
.structure {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-warm);
}

.structure-intro {
  max-width: 780px;
  margin: 0 auto var(--space-xl);
  text-align: center;
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.advantage-card {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition);
}

.advantage-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px var(--color-shadow);
}

.advantage-card h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  color: var(--color-wood-dark);
}

.advantage-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.cost-section {
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  box-shadow: 0 8px 32px var(--color-shadow);
}

.cost-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.cost-title {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: 400;
  margin-top: 0.25rem;
}

.cost-total {
  text-align: right;
}

.cost-total-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
}

.cost-total-value {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--color-primary);
  line-height: 1.1;
}

.cost-total-note {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-light);
  max-width: 260px;
  margin-left: auto;
  margin-top: 0.25rem;
}

.cost-breakdown {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.cost-item {
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.cost-item-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.cost-item h4 {
  font-size: 1rem;
  font-weight: 600;
}

.cost-range {
  font-family: var(--font-display);
  font-size: 1.125rem;
  color: var(--color-wood-dark);
  white-space: nowrap;
}

.cost-item p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.cost-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.cost-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--color-wood) 0%, var(--color-primary) 100%);
  border-radius: var(--radius-full);
}

.feasibility-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.feasibility-card {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.feasibility-card h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
}

.feasibility-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ── Assembly ── */
.assembly {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.assembly-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: var(--space-xl);
  align-items: center;
}

.assembly-points {
  margin-top: var(--space-md);
}

.assembly-points li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.assembly-points li:last-child {
  border-bottom: none;
}

.assembly-points strong {
  display: block;
  font-size: 1.0625rem;
  margin-bottom: 0.25rem;
}

.assembly-points span {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.assembly-video {
  width: 100%;
}

.video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-text);
  box-shadow: 0 16px 48px var(--color-shadow);
}

.video-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-caption {
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
}

/* ── Deployment ── */
.deployment {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-warm);
}

.deployment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.deployment-steps {
  margin-top: var(--space-md);
}

.deployment-steps li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.deployment-steps li:last-child {
  border-bottom: none;
}

.deployment-steps strong {
  display: block;
  font-size: 1.0625rem;
  margin-bottom: 0.25rem;
}

.deployment-steps span {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ── Model ── */
.model {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.model-card {
  padding: var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.model-card h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  color: var(--color-wood-dark);
}

.model-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ── Gallery ── */
.gallery {
  padding: var(--space-2xl) 0;
  background: var(--color-bg);
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-md);
}

.gallery-item {
  position: relative;
}

.gallery-item img {
  min-height: 320px;
}

.gallery-item-large img {
  min-height: 400px;
}

.gallery-item figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  background: linear-gradient(transparent, rgba(26, 24, 20, 0.8));
  color: #fff;
  font-size: 0.9375rem;
}

/* ── Sustainability ── */
.sustainability {
  padding: var(--space-2xl) 0;
  background: var(--color-accent);
  color: #fff;
}

.sustainability-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.sustainability .section-eyebrow {
  color: #a8d4bc;
}

.sustainability .section-title {
  color: #fff;
}

.impact-list {
  margin-top: var(--space-md);
}

.impact-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: rgba(255, 255, 255, 0.9);
}

.impact-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #a8d4bc;
  font-weight: 700;
}

.market-block {
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.market-block .section-eyebrow {
  color: #fcd9b8;
}

.market-block h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 0.75rem;
}

.market-block p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9375rem;
}

/* ── Path forward ── */
.path-forward {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-warm);
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.path-item {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.path-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-primary);
  opacity: 0.6;
  margin-bottom: 0.75rem;
}

.path-item p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ── Team ── */
.team {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}

.team-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.team-content p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.team-quote {
  padding: var(--space-lg);
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.team-quote p {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-style: italic;
  line-height: 1.5;
  color: var(--color-wood-dark);
}

/* ── Contact ── */
.contact {
  padding: var(--space-2xl) 0;
  background: var(--color-text);
  color: #fff;
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.contact-content p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-field label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
}

.form-field input,
.form-field select,
.form-field textarea {
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: #fff;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--color-primary);
}

.form-field textarea {
  resize: vertical;
  min-height: 100px;
}

.form-message {
  font-size: 0.9375rem;
  min-height: 1.5em;
}

.form-message.success {
  color: #a8d4bc;
}

.form-message.error {
  color: #ffb4a2;
}

/* ── Footer ── */
.footer {
  padding: var(--space-xl) 0 var(--space-md);
  background: #0f0e0c;
  color: #a8a29e;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.footer-links h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer-links a {
  font-size: 0.9rem;
  color: #78716c;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #fff;
}

.footer-links li + li {
  margin-top: 0.5rem;
}

.footer-bottom {
  padding-top: var(--space-md);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: #57534e;
}

/* ── Scroll animations ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .components-grid,
  .model-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .component-card-wide {
    grid-column: span 2;
  }

  .path-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .cost-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .cost-total {
    text-align: left;
  }

  .cost-total-note {
    margin-left: 0;
  }

  .energy-hero-grid,
  .energy-rack-section,
  .energy-thermal-grid,
  .energy-gallery {
    grid-template-columns: 1fr;
  }

  .energy-pillars {
    grid-template-columns: 1fr;
  }

  .energy-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .lease-flex {
    grid-template-columns: 1fr;
  }

  .problem-grid,
  .assembly-grid,
  .deployment-grid,
  .sustainability-inner,
  .team-inner,
  .contact-inner,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .deployment-visual {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-sm);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px var(--color-shadow);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links li {
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links li:last-child {
    border-bottom: none;
    padding-top: var(--space-xs);
  }

  .nav-links a:not(.btn) {
    display: block;
    padding: 0.875rem var(--space-sm);
  }

  .nav-links .btn-sm {
    display: block;
    text-align: center;
    width: 100%;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .components-grid,
  .model-grid,
  .path-grid {
    grid-template-columns: 1fr;
  }

  .component-card-wide {
    grid-column: span 1;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .hero-stats {
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-outline {
    color: var(--color-text);
    border-color: var(--color-border);
    background: rgba(255, 255, 255, 0.9);
  }
}

/* ── Prospective resident page ── */
.resident-page .header {
  background: rgba(255, 255, 255, 0.88);
}

.resident-hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-xl);
  overflow: hidden;
  background: var(--color-text);
}

.resident-hero-media {
  position: absolute;
  inset: 0;
}

.resident-hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  text-align: center;
}

.resident-hero-content .hero-title,
.resident-hero-content .hero-subtitle,
.resident-hero-content .hero-eyebrow {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
}

.resident-hero-note {
  max-width: 760px;
  margin: 0 auto;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
  line-height: 1.75;
}

.resident-intro {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}

.resident-benefits-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-lg);
  align-items: stretch;
}

.resident-benefit-card,
.resident-feature-panel,
.resident-highlight-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.resident-benefit-image img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.resident-benefit-body,
.resident-feature-panel,
.resident-highlight-card {
  padding: var(--space-lg);
}

.resident-benefit-body h3,
.resident-feature-panel h3,
.resident-highlight-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 0.75rem;
}

.resident-benefit-body p,
.resident-feature-panel p,
.resident-highlight-card p {
  color: var(--color-text-muted);
  line-height: 1.7;
}

.resident-benefit-body p + p,
.resident-highlight-card p + p {
  margin-top: 0.75rem;
}

.resident-bullet-list {
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0;
}

.resident-bullet-list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--color-text-muted);
}

.resident-bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
}

.resident-panel-note {
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.resident-highlights {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-warm);
}

.resident-highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.resident-approach {
  padding: var(--space-2xl) 0;
  background: var(--color-surface);
}

.resident-approach-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.resident-approach-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 48px var(--color-shadow);
}

.resident-approach-visual img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.resident-cta-band {
  padding: var(--space-xl) 0;
  background: var(--color-accent);
  color: #fff;
}

.resident-cta-band-inner {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: var(--space-lg);
  align-items: center;
}

.resident-cta-band .section-eyebrow {
  color: #a8d4bc;
}

.resident-cta-band .section-title {
  color: #fff;
}

.resident-cta-band p {
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
}

.resident-contact-points {
  display: grid;
  gap: 0.875rem;
  margin-top: var(--space-md);
}

.resident-contact-point {
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
}

.resident-contact-point strong {
  display: block;
  color: #fff;
  margin-bottom: 0.15rem;
}

.resident-contact-point span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

@media (max-width: 960px) {
  .resident-benefits-grid,
  .resident-approach-grid,
  .resident-cta-band-inner {
    grid-template-columns: 1fr;
  }

  .resident-highlight-grid {
    grid-template-columns: 1fr;
  }
}