/* ==========================================================================
   AETHERIA ECOLOGY & ENVIRONMENT INSTITUTE
   Master Design System & Custom Stylesheet
   Architecture: HTML5 + CSS3 + Bootstrap 5.3 Customization
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,700;0,9..144,800;1,9..144,400;1,9..144,600&family=Plus+Jakarta+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Syne:wght@600;700;800&display=swap');

:root {
  /* Core Environmental Color System */
  --c-forest-deep: #071910;
  --c-forest-dark: #0b2518;
  --c-forest-mid: #143d28;
  --c-botanical: #1f573a;
  --c-leaf: #2d7a52;
  --c-leaf-bright: #3ea06e;
  
  --c-sage-soft: #8fa89b;
  --c-sage-light: #d6e2db;
  --c-sage-ghost: #eef4f0;
  
  --c-earth-sand: #f4eee3;
  --c-earth-parchment: #eae3d4;
  --c-earth-beige: #ded4c0;
  --c-earth-ochre: #c47c3f;
  --c-earth-brown: #554133;
  --c-earth-bark: #3d2e24;
  
  --c-surface-base: #faf8f5;
  --c-surface-card: #ffffff;
  --c-surface-elevated: #ffffff;
  
  --c-text-primary: #121d16;
  --c-text-body: #3c4d42;
  --c-text-muted: #64756a;
  --c-text-subtle: #89998f;
  
  --c-border-hairline: rgba(11, 37, 24, 0.08);
  --c-border-card: rgba(11, 37, 24, 0.11);
  --c-border-light: rgba(255, 255, 255, 0.15);
  
  /* Typography Variables */
  --font-serif: 'Fraunces', Georgia, serif;
  --font-display: 'Syne', sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Shadows & Elevations */
  --shadow-subtle: 0 4px 20px rgba(7, 25, 16, 0.04);
  --shadow-card: 0 12px 36px rgba(7, 25, 16, 0.07);
  --shadow-hover: 0 24px 50px rgba(7, 25, 16, 0.12);
  --shadow-nav: 0 10px 30px rgba(7, 25, 16, 0.08);
  
  /* Radii */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-pill: 9999px;
  
  /* Transitions */
  --t-smooth: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & Smoothness */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--c-surface-base);
  color: var(--c-text-primary);
  line-height: 1.68;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6,
.font-serif {
  font-family: var(--font-serif);
  color: var(--c-forest-deep);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.font-display {
  font-family: var(--font-display);
}

.display-hero {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 5.5vw, 4.4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.display-section {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.025em;
}

.lead-prose {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.75;
  color: var(--c-text-muted);
}

.text-eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--c-leaf);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.text-eyebrow.light {
  color: var(--c-earth-ochre);
}

.text-eyebrow.sage {
  color: var(--c-sage-soft);
}

/* Header & Navigation Contract */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1040;
  padding: 1.35rem 0;
  transition: all 0.3s var(--t-smooth);
  background-color: transparent;
}

.site-header.scrolled {
  background-color: rgba(252, 251, 249, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-nav);
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--c-border-hairline);
}

/* Transparent Header on Hero */
.site-header.hero-transparent:not(.scrolled) .nav-brand-text {
  color: #ffffff;
}

.site-header.hero-transparent:not(.scrolled) .nav-brand-sub {
  color: rgba(255, 255, 255, 0.75);
}

.site-header.hero-transparent:not(.scrolled) .nav-link {
  color: rgba(255, 255, 255, 0.9);
}

.site-header.hero-transparent:not(.scrolled) .nav-link:hover,
.site-header.hero-transparent:not(.scrolled) .nav-link.active {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.1);
}

.site-header.hero-transparent:not(.scrolled) .btn-nav-action {
  background-color: #ffffff;
  color: var(--c-forest-deep);
  border-color: #ffffff;
}

.site-header.hero-transparent:not(.scrolled) .btn-nav-action:hover {
  background-color: var(--c-earth-sand);
  color: var(--c-forest-dark);
}

.site-header.hero-transparent:not(.scrolled) .navbar-toggler {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.35);
}

/* Standard Header for Inner Pages */
.site-header.standard-page {
  background-color: rgba(252, 251, 249, 0.98);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border-hairline);
  padding: 0.95rem 0;
  box-shadow: 0 4px 20px rgba(7, 25, 16, 0.04);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.nav-brand-emblem {
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  background: linear-gradient(135deg, var(--c-botanical) 0%, var(--c-forest-deep) 100%);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 4px 12px rgba(11, 37, 24, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.nav-brand-text {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--c-forest-deep);
  line-height: 1;
  transition: color 0.2s ease;
}

.nav-brand-sub {
  display: block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  margin-top: 2px;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--c-forest-deep);
  padding: 0.55rem 0.95rem !important;
  border-radius: var(--r-sm);
  transition: all 0.2s ease;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link:hover {
  color: var(--c-leaf);
  background-color: var(--c-sage-ghost);
}

.nav-link.active {
  color: var(--c-leaf) !important;
  font-weight: 700;
}

/* Dropdown Menu System */
.dropdown-menu {
  border: 1px solid var(--c-border-card);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-hover);
  padding: 0.75rem;
  background-color: #ffffff;
  min-width: 270px;
  animation: menuDrop 0.22s var(--t-smooth);
}

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

.dropdown-item {
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-text-primary);
  padding: 0.65rem 0.9rem;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  transition: all 0.15s ease;
}

.dropdown-item i {
  color: var(--c-leaf);
  font-size: 1.25rem;
  width: 24px;
}

.dropdown-item:hover {
  background-color: var(--c-earth-sand);
  color: var(--c-forest-deep);
  transform: translateX(2px);
}

.dropdown-item.active {
  background-color: var(--c-sage-ghost);
  color: var(--c-leaf);
}

/* Custom Environmental Buttons */
.btn-eco-primary {
  background-color: var(--c-forest-dark);
  color: #ffffff;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--r-md);
  border: 1px solid var(--c-forest-dark);
  box-shadow: 0 4px 14px rgba(11, 37, 24, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.25s var(--t-smooth);
}

.btn-eco-primary:hover {
  background-color: var(--c-botanical);
  border-color: var(--c-botanical);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(11, 37, 24, 0.32);
}

.btn-eco-secondary {
  background-color: #ffffff;
  color: var(--c-forest-deep);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--r-md);
  border: 1px solid var(--c-border-card);
  box-shadow: var(--shadow-subtle);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.25s var(--t-smooth);
}

.btn-eco-secondary:hover {
  background-color: var(--c-earth-sand);
  color: var(--c-forest-dark);
  border-color: var(--c-earth-beige);
  transform: translateY(-2px);
}

.btn-eco-glass {
  background-color: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #ffffff;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 255, 255, 0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.25s var(--t-smooth);
}

.btn-eco-glass:hover {
  background-color: #ffffff;
  color: var(--c-forest-deep);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-eco-ochre {
  background-color: var(--c-earth-ochre);
  color: #ffffff;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--r-md);
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(196, 124, 63, 0.3);
  transition: all 0.25s var(--t-smooth);
}

.btn-eco-ochre:hover {
  background-color: #ac672e;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(196, 124, 63, 0.4);
}

.btn-eco-text {
  color: var(--c-leaf);
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
  padding: 0;
  background: none;
  border: none;
}

.btn-eco-text:hover {
  color: var(--c-forest-deep);
  gap: 0.65rem;
}

/* Page Spacing System */
.page-top-spacer {
  height: 82px;
}

.section-spacing {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.section-spacing-sm {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

/* Background Color Themes */
.bg-theme-offwhite {
  background-color: var(--c-surface-base);
}

.bg-theme-pure {
  background-color: #ffffff;
}

.bg-theme-sand {
  background-color: var(--c-earth-sand);
}

.bg-theme-sage {
  background-color: var(--c-sage-ghost);
}

.bg-theme-forest {
  background-color: var(--c-forest-dark);
  color: #ffffff;
}

.bg-theme-forest h1,
.bg-theme-forest h2,
.bg-theme-forest h3,
.bg-theme-forest h4 {
  color: #ffffff;
}

.bg-theme-deep {
  background-color: var(--c-forest-deep);
  color: #ffffff;
}

/* ==========================================================================
   HOMEPAGE CINEMATIC HERO
   ========================================================================== */
.hero-epic {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--c-forest-deep);
  overflow: hidden;
  padding: 8rem 0 5rem;
}

.hero-epic-media {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-epic-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.7) contrast(1.08);
}

.hero-epic-scrim {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(7, 25, 16, 0.55) 0%,
    rgba(7, 25, 16, 0.35) 40%,
    rgba(7, 25, 16, 0.85) 85%,
    rgba(7, 25, 16, 0.98) 100%
  );
  z-index: 2;
}

.hero-epic-content {
  position: relative;
  z-index: 3;
  color: #ffffff;
}

.hero-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.4rem 1rem;
  border-radius: var(--r-pill);
  font-size: 0.82rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 1.75rem;
}

.hero-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #52b788;
  box-shadow: 0 0 10px #52b788;
  animation: pulseBeacon 2s infinite ease-in-out;
}

@keyframes pulseBeacon {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}

.hero-lead-text {
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
  max-width: 660px;
  margin-bottom: 2.25rem;
}

/* Floating Statistics Card on Hero */
.hero-floating-card {
  background-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--r-lg);
  padding: 2rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.hero-coordinates-tag {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.hero-scroll-prompt {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  transition: color 0.2s ease;
}

.hero-scroll-prompt:hover {
  color: #ffffff;
}

/* ==========================================================================
   INNER PAGE HERO SYSTEM (MULTIPLE FLAVORS)
   ========================================================================== */
.inner-hero-split {
  padding: 9rem 0 5rem;
  background-color: var(--c-surface-base);
  border-bottom: 1px solid var(--c-border-hairline);
  position: relative;
  overflow: hidden;
}

.inner-hero-immersive {
  position: relative;
  padding: 9.5rem 0 5.5rem;
  background-color: var(--c-forest-dark);
  color: #ffffff;
  overflow: hidden;
}

.inner-hero-immersive-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
  filter: brightness(0.85);
}

.inner-hero-immersive .page-hero-title {
  color: #ffffff;
}

.inner-hero-editorial {
  padding: 8.5rem 0 4.5rem;
  background-color: var(--c-earth-sand);
  border-bottom: 1px solid var(--c-earth-beige);
}

.breadcrumb-custom {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-text-muted);
  margin-bottom: 1.25rem;
}

.breadcrumb-custom a {
  color: var(--c-forest-dark);
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumb-custom a:hover {
  color: var(--c-leaf);
  text-decoration: underline;
}

.breadcrumb-custom.light {
  color: rgba(255, 255, 255, 0.65);
}

.breadcrumb-custom.light a {
  color: rgba(255, 255, 255, 0.9);
}

.breadcrumb-custom.light a:hover {
  color: #ffffff;
}

/* ==========================================================================
   CARDS & SURFACES
   ========================================================================== */
.card-curated {
  background-color: var(--c-surface-card);
  border: 1px solid var(--c-border-card);
  border-radius: var(--r-lg);
  padding: 2.25rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-subtle);
  transition: transform 0.3s var(--t-smooth), box-shadow 0.3s var(--t-smooth), border-color 0.3s ease;
}

.card-curated:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(45, 122, 82, 0.28);
}

.card-curated-img-top {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  margin: -2.25rem -2.25rem 1.75rem -2.25rem;
  height: 250px;
}

.card-curated-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--t-smooth);
}

.card-curated:hover .card-curated-img {
  transform: scale(1.06);
}

/* Horizontal Project Card */
.card-horizontal-showcase {
  background-color: #ffffff;
  border: 1px solid var(--c-border-card);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s var(--t-smooth), box-shadow 0.3s var(--t-smooth);
}

.card-horizontal-showcase:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* Category Pill & Status Markers */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border-radius: var(--r-pill);
  background-color: var(--c-sage-ghost);
  color: var(--c-botanical);
}

.status-pill.dark {
  background-color: rgba(7, 25, 16, 0.85);
  color: #ffffff;
  backdrop-filter: blur(8px);
}

/* ==========================================================================
   STATISTICS & NUMBER-FOCUSED IMPACT
   ========================================================================== */
.impact-number-row {
  border-bottom: 1px solid var(--c-border-hairline);
  padding: 3rem 0;
}

.impact-number-row:first-child {
  border-top: 1px solid var(--c-border-hairline);
}

.impact-index {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--c-leaf);
  margin-bottom: 0.5rem;
}

.impact-huge-num {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  font-weight: 800;
  line-height: 1;
  color: var(--c-forest-deep);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.35rem;
}

.impact-label {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-forest-dark);
  margin-bottom: 0.35rem;
}

.impact-desc {
  font-size: 0.92rem;
  color: var(--c-text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ==========================================================================
   FILTER TABS & SEGMENTED CONTROLS
   ========================================================================== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  background-color: rgba(11, 37, 24, 0.04);
  padding: 0.4rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-border-card);
  width: fit-content;
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--c-text-muted);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  color: var(--c-forest-deep);
}

.filter-btn.active {
  background-color: #ffffff;
  color: var(--c-forest-deep);
  box-shadow: 0 2px 8px rgba(7, 25, 16, 0.1);
  font-weight: 700;
}

/* ==========================================================================
   INTERACTIVE CALCULATOR CARD
   ========================================================================== */
.calc-suite-box {
  background-color: #ffffff;
  border: 1px solid var(--c-border-card);
  border-radius: var(--r-xl);
  padding: 3rem;
  box-shadow: var(--shadow-card);
}

.calc-telemetry-panel {
  background: linear-gradient(145deg, var(--c-forest-deep) 0%, var(--c-forest-dark) 100%);
  color: #ffffff;
  border-radius: var(--r-lg);
  padding: 2.5rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-telemetry-num {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 4.5vw, 4rem);
  font-weight: 800;
  line-height: 1;
  color: #ffffff;
  margin: 0.5rem 0;
  font-variant-numeric: tabular-nums;
}

/* Form Elements */
.form-eco-control {
  width: 100%;
  padding: 0.85rem 1.15rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--c-text-primary);
  background-color: #ffffff;
  border: 1px solid var(--c-border-card);
  border-radius: var(--r-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-eco-control:focus {
  outline: none;
  border-color: var(--c-leaf);
  box-shadow: 0 0 0 3px rgba(45, 122, 82, 0.15);
}

.form-label-eco {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--c-forest-deep);
  margin-bottom: 0.45rem;
  display: block;
}

/* ==========================================================================
   EDITORIAL ARTICLE & PULL QUOTES
   ========================================================================== */
.article-dropcap:first-letter {
  font-family: var(--font-serif);
  font-size: 4.4rem;
  font-weight: 800;
  float: left;
  line-height: 0.78;
  margin-right: 0.75rem;
  margin-top: 0.15rem;
  color: var(--c-forest-deep);
}

.article-pullquote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
  line-height: 1.4;
  color: var(--c-forest-deep);
  border-left: 3px solid var(--c-leaf);
  padding: 1.25rem 0 1.25rem 2rem;
  margin: 3rem 0;
}

.editorial-byline-strip {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--c-border-hairline);
  border-bottom: 1px solid var(--c-border-hairline);
  margin-bottom: 2.5rem;
}

/* ==========================================================================
   ACCORDION ECO
   ========================================================================== */
.accordion-eco .accordion-item {
  border: 1px solid var(--c-border-card);
  border-radius: var(--r-md) !important;
  margin-bottom: 1rem;
  overflow: hidden;
  background-color: #ffffff;
  transition: box-shadow 0.2s ease;
}

.accordion-eco .accordion-item:hover {
  box-shadow: var(--shadow-subtle);
}

.accordion-eco .accordion-button {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--c-forest-deep);
  background-color: #ffffff;
  padding: 1.35rem 1.75rem;
  box-shadow: none;
}

.accordion-eco .accordion-button:not(.collapsed) {
  background-color: var(--c-earth-sand);
  color: var(--c-forest-deep);
}

.accordion-eco .accordion-body {
  padding: 1.35rem 1.75rem;
  color: var(--c-text-body);
  font-size: 0.98rem;
  line-height: 1.75;
}

/* ==========================================================================
   COMMON FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--c-forest-deep);
  color: #ffffff;
  padding: 6rem 0 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer h5 {
  color: #ffffff;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.footer-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav-list li {
  margin-bottom: 0.8rem;
}

.footer-nav-list a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font-size: 0.94rem;
  transition: all 0.2s ease;
  display: inline-block;
}

.footer-nav-list a:hover {
  color: #ffffff;
  transform: translateX(4px);
}

.footer-social-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  background-color: rgba(255, 255, 255, 0.07);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-social-btn:hover {
  background-color: var(--c-leaf);
  color: #ffffff;
  transform: translateY(-3px);
  border-color: var(--c-leaf);
}

.footer-sub-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2.25rem;
  margin-top: 4.5rem;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
}

.footer-sub-bar a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
}

.footer-sub-bar a:hover {
  color: #ffffff;
}

/* Back to Top Floating Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  border-radius: var(--r-md);
  background-color: var(--c-forest-dark);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s var(--t-smooth);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--c-leaf);
  transform: translateY(-4px);
}

/* Feedback Toast Notification */
.eco-toast {
  position: fixed;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background-color: var(--c-forest-deep);
  color: #ffffff;
  padding: 0.95rem 1.8rem;
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: 0.94rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  z-index: 2000;
  transition: transform 0.35s var(--t-smooth);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.eco-toast.show {
  transform: translateX(-50%) translateY(0);
}

/* Responsive Overrides & Tuning */
@media (max-width: 991.98px) {
  .site-header {
    background-color: rgba(252, 251, 249, 0.98) !important;
    border-bottom: 1px solid var(--c-border-hairline) !important;
    padding: 0.85rem 0;
  }
  
  .site-header .nav-brand-text {
    color: var(--c-forest-deep) !important;
  }

  .site-header .nav-brand-sub {
    color: var(--c-text-muted) !important;
  }
  
  .site-header .nav-link {
    color: var(--c-forest-deep) !important;
    padding: 0.7rem 0.6rem !important;
  }

  .site-header .navbar-toggler {
    color: var(--c-forest-deep) !important;
    border-color: var(--c-border-card) !important;
  }

  .site-header .btn-nav-action {
    background-color: var(--c-forest-dark) !important;
    color: #ffffff !important;
    border-color: var(--c-forest-dark) !important;
    width: 100%;
    margin-top: 0.5rem;
  }

  .navbar-collapse {
    background-color: #ffffff;
    border-radius: var(--r-lg);
    padding: 1.25rem;
    margin-top: 0.75rem;
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--c-border-card);
  }

  .hero-epic {
    min-height: auto;
    padding: 7rem 0 4.5rem;
  }

  .section-spacing {
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }

  .calc-suite-box {
    padding: 2rem;
  }
}

@media (max-width: 575.98px) {
  .display-hero {
    font-size: 2.25rem;
  }
  
  .display-section {
    font-size: 1.85rem;
  }

  .calc-suite-box {
    padding: 1.5rem;
  }

  .btn-eco-primary,
  .btn-eco-secondary,
  .btn-eco-glass,
  .btn-eco-ochre {
    width: 100%;
    justify-content: center;
  }

  .hero-floating-card {
    padding: 1.35rem;
  }
}