/* ==========================================================================
   London Corporate Management (LCM Tax) - Modern Design System
   WCAG AA/AAA Compliant | Mobile-First | Responsive Grid | Logical Properties
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & Custom Properties
   -------------------------------------------------------------------------- */
:root {
  /* Brand Colours */
  --color-primary: #0e5b92;
  --color-primary-dark: #0a3d62;
  --color-primary-deep: #06263e;
  --color-primary-light: #1877bd;
  --color-primary-50: #f0f7fc;
  --color-primary-100: #e0eef7;
  
  --color-accent: #a1253c;
  --color-accent-dark: #7d1a2d;
  --color-accent-light: #c2334e;
  --color-accent-50: #fdf2f4;
  --color-accent-100: #fce4e8;

  /* Neutrals & Text Hierarchy (WCAG AAA/AA Checked) */
  --color-text-main: #0f172a;        /* Slate 900 - 15.6:1 on white */
  --color-text-body: #1e293b;        /* Slate 800 - 12.8:1 on white */
  --color-text-muted: #334155;       /* Slate 700 - 9.1:1 on white, passes AAA */
  --color-text-subtle: #475569;      /* Slate 600 - 6.8:1 on white, passes AA */
  --color-text-inverse: #ffffff;
  --color-text-inverse-muted: #e2e8f0;

  /* Surfaces & Backgrounds */
  --color-bg-body: #ffffff;
  --color-bg-alt: #f8fafc;           /* Slate 50 */
  --color-bg-muted: #f1f5f9;         /* Slate 100 */
  --color-bg-card: #ffffff;
  --color-bg-hero: linear-gradient(135deg, #06263e 0%, #0a3d62 50%, #0e5b92 100%);
  --color-bg-dark: #061e31;

  /* Functional Accents */
  --color-border: #e2e8f0;
  --color-border-subtle: #f1f5f9;
  --color-border-hover: #cbd5e1;
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --color-gold: #f59e0b;
  --color-focus: #0e5b92;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-serif: 'Playfair Display', Georgia, Cambria, 'Times New Roman', serif;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-glow: 0 0 24px rgba(14, 91, 146, 0.2);

  /* Border Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Container & Layout */
  --container-max: 1240px;
  --container-narrow: 920px;
  --header-height: 80px;
}

/* --------------------------------------------------------------------------
   2. Reset & Base Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-body);
  background-color: var(--color-bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip; /* Clean clipping without breaking sticky header */
}

/* Media Elements */
img, picture, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent);
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-main);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 4vw + 1rem, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.6rem, 2.5vw + 0.5rem, 2.25rem);
}

h3 {
  font-size: clamp(1.25rem, 1.5vw + 0.5rem, 1.65rem);
}

h4 {
  font-size: 1.2rem;
  font-weight: 600;
}

p {
  margin-block-end: 1rem;
}

p:last-child {
  margin-block-end: 0;
}

ul, ol {
  list-style: none;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  inset-inline-start: 1.5rem;
  background: var(--color-accent);
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

/* --------------------------------------------------------------------------
   3. Layout & Common Components
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 48px;
  padding: 0.75rem 1.6rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(161, 37, 60, 0.25);
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(161, 37, 60, 0.35);
}

.btn-secondary {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(14, 91, 146, 0.25);
}

.btn-secondary:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(14, 91, 146, 0.35);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline-white {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.4);
  color: #ffffff;
}

.btn-outline-white:hover {
  background-color: #ffffff;
  color: var(--color-primary-dark);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-sm {
  min-height: 38px;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-lg {
  min-height: 54px;
  padding: 1rem 2rem;
  font-size: 1.05rem;
  font-weight: 700;
}

/* Badges & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
}

.badge-primary {
  background: var(--color-primary-50);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-100);
}

.badge-accent {
  background: var(--color-accent-50);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-100);
}

.badge-light {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
}

/* Section Wrapper */
.section {
  padding-block: clamp(3.5rem, 6vw, 6rem);
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-dark {
  background-color: var(--color-bg-dark);
  color: #ffffff;
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: #ffffff;
}

.section-dark p {
  color: var(--color-text-inverse-muted);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
  margin-block-end: clamp(2.5rem, 4vw, 4rem);
}

.section-header .section-tag {
  display: inline-block;
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-block-end: 0.6rem;
}

.section-header h2 {
  margin-block-end: 0.85rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   4. Sticky Header & Glassmorphic Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-block-end: 1px solid rgba(226, 232, 240, 0.8);
  transition: all var(--transition-normal);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.98);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1.5rem;
}

/* Brand Logo (Home Link) */
.header-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
  min-height: 48px;
}

.header-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.header-logo-text {
  display: flex;
  flex-direction: column;
  margin-inline-start: 0.75rem;
}

.header-logo-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.header-logo-sub {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Desktop Navigation Menu */
.nav-menu {
  display: none; /* Mobile first; shown on desktop */
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0.5rem 0.9rem;
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--color-text-body);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-50);
}

.nav-link[aria-current="page"] {
  color: var(--color-primary);
  font-weight: 700;
  background-color: var(--color-primary-50);
}

.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 0.9rem;
  right: 0.9rem;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

/* Header Action CTA */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.header-phone {
  display: none;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  padding: 0.5rem 0.75rem;
}

.header-phone svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
}

/* Mobile Menu Toggle Button (>= 48px touch target) */
.mobile-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-main);
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-fast);
}

.mobile-toggle:hover {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.mobile-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  inset-block-start: 0;
  inset-inline-end: 0;
  width: min(85vw, 380px);
  height: 100vh;
  background-color: #ffffff;
  z-index: 1050;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  overflow-y: auto;
}

.mobile-drawer.is-active {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block-end: 1.25rem;
  border-block-end: 1px solid var(--color-border);
  margin-block-end: 1.5rem;
}

.drawer-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 48px;
  padding: 0.5rem 0.85rem;
  background: var(--color-bg-muted);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-body);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
}

.drawer-close:hover {
  background: var(--color-accent-50);
  color: var(--color-accent);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-block-end: 2rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-main);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link[aria-current="page"] {
  background-color: var(--color-primary-50);
  color: var(--color-primary);
}

.mobile-nav-link[aria-current="page"] {
  font-weight: 700;
  border-inline-start: 4px solid var(--color-accent);
}

.mobile-drawer-footer {
  margin-top: auto;
  padding-block-start: 1.5rem;
  border-block-start: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.drawer-contact-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.drawer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.drawer-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

/* --------------------------------------------------------------------------
   5. Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: var(--color-bg-hero);
  color: #ffffff;
  padding-block: clamp(3.5rem, 6vw, 6.5rem);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(24, 119, 189, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(161, 37, 60, 0.18) 0%, transparent 45%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

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

.hero-badge-wrap {
  margin-block-end: 1.25rem;
}

.hero-title {
  color: #ffffff;
  margin-block-end: 1.25rem;
  letter-spacing: -0.025em;
}

.hero-lead {
  font-size: clamp(1.05rem, 1.2vw + 0.5rem, 1.25rem);
  line-height: 1.6;
  color: #e2e8f0;
  margin-block-end: 2rem;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-block-end: 2.5rem;
}

.hero-trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  padding-block-start: 1.5rem;
  border-block-start: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #cbd5e1;
  font-weight: 500;
}

.hero-trust-item svg {
  width: 18px;
  height: 18px;
  color: #38bdf8;
  flex-shrink: 0;
}

/* Hero Media / Graphic Card */
.hero-card {
  min-width: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 1.5rem;
  padding-block-end: 1rem;
  border-block-end: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-card-title {
  color: #ffffff;
  font-size: 1.15rem;
  font-weight: 700;
}

.hero-card-rating {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.85rem;
}

.hero-card-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-card-feature {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.hero-card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  flex-shrink: 0;
}

.hero-card-text strong {
  display: block;
  color: #ffffff;
  font-size: 0.95rem;
  margin-block-end: 0.15rem;
}

.hero-card-text p {
  color: #cbd5e1;
  font-size: 0.85rem;
  margin: 0;
}

/* --------------------------------------------------------------------------
   6. Metrics / Stats Bar (Static Fallback + Hydration Ready)
   -------------------------------------------------------------------------- */
.stats-bar {
  background-color: #ffffff;
  border-block-end: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 10;
  margin-top: -1.5rem;
  border-radius: var(--radius-lg);
  max-width: var(--container-max);
  margin-inline: auto;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background-color: var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat-item {
  background-color: #ffffff;
  padding: clamp(1.25rem, 2.5vw, 2rem) 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.stat-number {
  font-size: clamp(2rem, 3.5vw, 2.85rem);
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.1;
  margin-block-end: 0.35rem;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-desc {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  margin-top: 0.25rem;
}

/* --------------------------------------------------------------------------
   7. Interactive Quick Selector ("How Can We Help?")
   -------------------------------------------------------------------------- */
.quick-selector-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.selector-card {
  min-width: 0;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.selector-card::before {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 4px;
  background: var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.selector-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-100);
}

.selector-card:hover::before {
  opacity: 1;
}

.selector-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-50);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-block-end: 1.25rem;
  transition: all var(--transition-fast);
}

.selector-card:hover .selector-icon {
  background: var(--color-primary);
  color: #ffffff;
}

.selector-icon svg {
  width: 26px;
  height: 26px;
}

.selector-title {
  font-size: 1.25rem;
  margin-block-end: 0.6rem;
  color: var(--color-text-main);
}

.selector-desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-block-end: 1.25rem;
  flex-grow: 1;
}

.selector-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
  min-height: 48px;
}

.selector-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.selector-card:hover .selector-link svg {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   8. Core Differentiators ("Why LCM")
   -------------------------------------------------------------------------- */
.diff-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.diff-card {
  min-width: 0;
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 1.25rem;
  transition: all var(--transition-normal);
}

.diff-card:hover {
  border-color: var(--color-accent-100);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.diff-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-50);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.diff-icon-wrap svg {
  width: 24px;
  height: 24px;
}

.diff-content {
  min-width: 0;
}

.diff-content h3 {
  font-size: 1.15rem;
  margin-block-end: 0.4rem;
}

.diff-content p {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin: 0;
}

/* --------------------------------------------------------------------------
   9. Solutions & Service Breakdown Cards
   -------------------------------------------------------------------------- */
.service-nav-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-block-end: 2.5rem;
}

.service-tab-btn {
  min-height: 48px;
  padding: 0.65rem 1.4rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-body);
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.service-tab-btn:hover {
  background: var(--color-primary-50);
  color: var(--color-primary);
  border-color: var(--color-primary-100);
}

.service-tab-btn.is-active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.service-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

.service-card {
  min-width: 0;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

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

.service-card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--color-bg-muted);
  overflow: hidden;
}

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

.service-card:hover .service-card-img {
  transform: scale(1.04);
}

.service-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-card-badge {
  align-self: flex-start;
  margin-block-end: 0.75rem;
}

.service-card-title {
  font-size: 1.3rem;
  margin-block-end: 0.6rem;
}

.service-card-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-block-end: 1.25rem;
  line-height: 1.6;
}

.service-checklist {
  margin-block-end: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.service-check-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-body);
}

.service-check-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-success);
  flex-shrink: 0;
}

.service-card-footer {
  margin-top: auto;
  padding-block-start: 1.25rem;
  border-block-start: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* --------------------------------------------------------------------------
   10. Verified Reviews Carousel (Semantic, Accessible, No <pre>)
   -------------------------------------------------------------------------- */
.reviews-section {
  position: relative;
  overflow: hidden;
}

.reviews-carousel-wrapper {
  position: relative;
  max-width: 900px;
  margin-inline: auto;
}

.reviews-carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: #ffffff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.75rem, 4vw, 3rem);
}

.review-slide {
  display: none;
  animation: fadeIn var(--transition-normal);
}

.review-slide.is-active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.review-badge-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 1.5rem;
  padding-block-end: 1rem;
  border-block-end: 1px solid var(--color-border);
}

.review-stars {
  display: flex;
  gap: 0.25rem;
  color: var(--color-gold);
}

.review-stars svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.google-verified-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: #1a73e8;
  background: #e8f0fe;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

.google-verified-tag svg {
  width: 14px;
  height: 14px;
}

.review-text {
  font-size: clamp(1.05rem, 1.2vw + 0.3rem, 1.25rem);
  font-style: italic;
  line-height: 1.65;
  color: var(--color-text-main);
  margin-block-end: 1.75rem;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.review-avatar-wrap {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary-100);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.review-author-info {
  display: flex;
  flex-direction: column;
}

.review-author-name {
  font-weight: 700;
  color: var(--color-text-main);
  font-size: 1rem;
}

.review-meta {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

/* Carousel Nav Controls */
.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-start: 1.5rem;
}

.carousel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--color-border);
  color: var(--color-text-body);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.carousel-btn:hover {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.carousel-btn svg {
  width: 20px;
  height: 20px;
}

.carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

.carousel-dot.is-active {
  background: var(--color-primary);
  width: 28px;
  border-radius: var(--radius-full);
}

/* --------------------------------------------------------------------------
   11. Team Members Grid (About Us)
   -------------------------------------------------------------------------- */
.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.team-card {
  min-width: 0;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

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

.team-photo-wrap {
  aspect-ratio: 4 / 3;
  position: relative;
  background: var(--color-bg-muted);
  overflow: hidden;
}

.team-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.team-card:hover .team-photo {
  transform: scale(1.05);
}

.team-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.team-name {
  font-size: 1.35rem;
  margin-block-end: 0.25rem;
}

.team-role {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.9rem;
  margin-block-end: 1rem;
}

.team-bio {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-block-end: 1.25rem;
}

.team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.team-tag {
  background: var(--color-bg-muted);
  color: var(--color-text-subtle);
  font-size: 0.775rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   12. Accreditation & Partner Logos Bar
   -------------------------------------------------------------------------- */
.accreditation-bar {
  background: #ffffff;
  border-block: 1px solid var(--color-border);
  padding-block: 2.25rem;
}

.accreditation-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.accreditation-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
}

.accreditation-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(1.5rem, 3.5vw, 3rem);
}

.accred-logo-item {
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.accred-logo-img {
  max-height: 44px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.8;
  transition: all var(--transition-fast);
}

.accred-logo-item:hover .accred-logo-img {
  filter: grayscale(0%);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   13. Pricing & Transparent Tiers
   -------------------------------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

.pricing-card {
  min-width: 0;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card.is-popular {
  border-color: var(--color-accent);
  box-shadow: 0 10px 30px rgba(161, 37, 60, 0.12);
}

.popular-ribbon {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--color-accent);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-header {
  margin-block-end: 1.5rem;
  padding-block-end: 1.25rem;
  border-block-end: 1px solid var(--color-border);
}

.pricing-plan-name {
  font-size: 1.25rem;
  margin-block-end: 0.35rem;
}

.pricing-plan-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.pricing-rate {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin-block: 1rem;
}

.pricing-amount {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1;
}

.pricing-period {
  font-size: 0.875rem;
  color: var(--color-text-subtle);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-block-end: 2rem;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-text-body);
}

.pricing-feature-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   14. FAQ Accordion (Accessible & Structured)
   -------------------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 820px;
  margin-inline: auto;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-primary-100);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 52px;
  padding: 1.15rem 1.4rem;
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-main);
  text-align: left;
  cursor: pointer;
}

.faq-trigger svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.faq-trigger[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.faq-content {
  display: none;
  padding: 0 1.4rem 1.4rem 1.4rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.faq-content.is-open {
  display: block;
}

/* --------------------------------------------------------------------------
   15. Forms & Contact Layout
   -------------------------------------------------------------------------- */
.contact-layout-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.contact-card-info {
  background: var(--color-bg-dark);
  color: #ffffff;
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-card-info h3 {
  color: #ffffff;
  font-size: 1.5rem;
  margin-block-end: 0.5rem;
}

.contact-card-info p {
  color: #cbd5e1;
}

.contact-detail-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-detail-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #38bdf8;
  flex-shrink: 0;
}

.contact-detail-icon svg {
  width: 20px;
  height: 20px;
}

.contact-detail-text strong {
  display: block;
  color: #ffffff;
  font-size: 0.95rem;
  margin-block-end: 0.2rem;
}

.contact-detail-text a,
.contact-detail-text address {
  color: #e2e8f0;
  font-style: normal;
  font-size: 0.925rem;
  line-height: 1.5;
}

.contact-detail-text a:hover {
  color: #38bdf8;
  text-decoration: underline;
}

/* Form Card */
.form-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  box-shadow: var(--shadow-lg);
}

.form-card h3 {
  margin-block-end: 0.5rem;
}

.form-card > p {
  color: var(--color-text-muted);
  margin-block-end: 1.75rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text-body);
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-100);
  outline: none;
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1.4;
}

.form-checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-accent);
}

.form-alert {
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  display: none;
}

.form-alert.is-success {
  display: block;
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid #a7f3d0;
}

/* --------------------------------------------------------------------------
   16. Knowledge Base & Insights Articles
   -------------------------------------------------------------------------- */
.insights-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-block-end: 2.5rem;
}

.filter-btn {
  min-height: 48px;
  padding: 0.5rem 1.25rem;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-body);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background: var(--color-primary-50);
  color: var(--color-primary);
}

.filter-btn.is-active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.article-card {
  min-width: 0;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

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

.article-card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--color-bg-muted);
  overflow: hidden;
}

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

.article-card:hover .article-card-img {
  transform: scale(1.04);
}

.article-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  margin-block-end: 0.75rem;
}

.article-category {
  color: var(--color-accent);
  font-weight: 700;
  text-transform: uppercase;
}

.article-title {
  font-size: 1.25rem;
  margin-block-end: 0.75rem;
  line-height: 1.35;
}

.article-excerpt {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-block-end: 1.5rem;
  flex-grow: 1;
}

.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
  min-height: 48px;
}

.article-read-more svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.article-card:hover .article-read-more svg {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   17. CTA Callout Banner
   -------------------------------------------------------------------------- */
.cta-banner {
  background: var(--color-bg-hero);
  color: #ffffff;
  border-radius: var(--radius-xl);
  padding: clamp(2.5rem, 5vw, 4rem) clamp(1.5rem, 4vw, 3.5rem);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 20%, rgba(161, 37, 60, 0.25) 0%, transparent 50%);
  pointer-events: none;
}

.cta-banner-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin-inline: auto;
}

.cta-banner h2 {
  color: #ffffff;
  margin-block-end: 1rem;
}

.cta-banner p {
  color: #e2e8f0;
  font-size: 1.1rem;
  line-height: 1.6;
  margin-block-end: 2rem;
}

.cta-banner-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* --------------------------------------------------------------------------
   18. Comprehensive Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-bg-dark);
  color: #cbd5e1;
  padding-block-start: clamp(3.5rem, 5vw, 5rem);
  border-block-start: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: auto;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-block-end: 3.5rem;
  border-block-end: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
}

.footer-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  background: #ffffff;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.footer-tagline {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #94a3b8;
  max-width: 340px;
}

.footer-reg-info {
  font-size: 0.8rem;
  color: #64748b;
  line-height: 1.5;
}

.footer-col-title {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  margin-block-end: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-nav-link {
  color: #94a3b8;
  font-size: 0.925rem;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  transition: color var(--transition-fast);
}

.footer-nav-link:hover {
  color: #ffffff;
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: #94a3b8;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-item a {
  color: #cbd5e1;
}

.footer-contact-item a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-bottom {
  padding-block: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  font-size: 0.825rem;
  color: #64748b;
}

.footer-bottom-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.footer-bottom-link {
  color: #94a3b8;
}

.footer-bottom-link:hover {
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   19. Back to Top Button (Semantic, Accessible, No Href)
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  inset-inline-end: 24px;
  z-index: 990;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--color-primary-dark);
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(161, 37, 60, 0.4);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

/* --------------------------------------------------------------------------
   20. Responsive Media Queries (Mobile-First Architecture)
   -------------------------------------------------------------------------- */

/* Tablet & Intermediate (>= 640px) */
@media (min-width: 640px) {
  .quick-selector-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

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

  .form-group-full {
    grid-column: 1 / -1;
  }
}

/* Tablet Landscape & Small Desktop (>= 768px) */
@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .contact-layout-grid {
    grid-template-columns: 1fr 1.35fr;
  }

  .footer-top-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.25fr;
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Desktop (>= 1024px) */
@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
  }

  .header-phone {
    display: inline-flex;
  }

  .mobile-toggle {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
  }

  .quick-selector-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .diff-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .service-card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Large Desktop (>= 1280px) */
@media (min-width: 1280px) {
  .container {
    padding-inline: 2rem;
  }
}

/* Print Styles */
@media print {
  .site-header,
  .back-to-top,
  .mobile-toggle,
  .mobile-drawer,
  .carousel-controls,
  .service-nav-tabs,
  .insights-filter-bar {
    display: none !important;
  }
  
  body {
    color: #000;
    background: #fff;
  }
}