/* ===== 1. CSS VARIABLES & THEMING ===== */
:root {
  /* Core Colors */
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #a5b4fc;
  --primary-dark: #3730a3;
  --accent: #8b5cf6;
  --success: #10b981;
  --warning: #66512e;
  --error: #ef4444;
  --info: #2c6ace;
  /* Grayscale */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  /* Text Colors */
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-tertiary: var(--gray-500);
  --text-muted: var(--gray-400);
  /* Background Colors */
  --bg-primary: #fff;
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);
  --bg-elevated: #fff;
  /* Borders */
  --border-primary: var(--gray-200);
  --border-secondary: var(--gray-300);
  --border-focus: var(--primary);
  /* Layout */
  --container-max: 1400px;
  --header-height: 5rem;
  --content-max: 1200px;
  /* Fluid layout spacing additions */
  --section-pad-y: clamp(2rem, 6vw, 4.5rem);
  --section-pad-y-tight: clamp(1.5rem, 4vw, 3rem);
  --container-x: clamp(1rem, 3.2vw, 2.5rem);
  /* Spacing (using CSS custom properties for consistency) */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-lg: 1rem;
  --space-xl: 1.25rem;
  --space-2xl: 1.5rem;
  --space-3xl: 2rem;
  --space-4xl: 2.5rem;
  --space-5xl: 3rem;
  --space-6xl: 4rem;
  --space-7xl: 5rem;
  --space-8xl: 6rem;
  /* Typography */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-focus: 0 0 0 3px rgb(99 102 241 / 0.15);
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}
/* Dark Theme Variables */
[data-theme="dark"] {
  --text-primary: var(--gray-100); /* Slightly lighter than gray-50 for better contrast on dark bg */
  --text-secondary: var(--gray-300);
  --text-tertiary: var(--gray-400);
  --text-muted: var(--gray-500);
  --bg-primary: var(--gray-900);
  --bg-secondary: var(--gray-800);
  --bg-tertiary: var(--gray-700);
  --bg-elevated: var(--gray-800);
  --border-primary: var(--gray-700);
  --border-secondary: var(--gray-600);
  --primary: #818cf8;
  --primary-hover: #a5b4fc;
  --primary-light: #c7d2fe;
  /* Slightly adjusted shadows for better visibility in dark mode */
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.5), 0 1px 2px -1px rgb(0 0 0 / 0.5);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.5);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.5);
  --shadow-focus: 0 0 0 3px rgb(129 140 248 / 0.25);
}
/* ===== 2. RESET & BASE STYLES ===== */
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-feature-settings: 'cv01', 'cv03', 'cv04', 'cv11';
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
svg {
  max-width: 100%;
  height: auto;
}
img, video, canvas {
  max-width: 100%;
  height: auto;
}
a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  color: var(--primary-hover);
}
/* Generic focus outline for robustness */
:focus {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}
/* Enhanced focus styles for keyboard users */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(99 102 241 / 0.25);
}
/* Accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  position: fixed;
  left: var(--space-lg);
  top: var(--space-lg);
  width: auto;
  height: auto;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 2px solid var(--border-focus);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  z-index: 1000; /* Increased z-index for skip link */
}
/* Layout */
.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-x);
  width: 100%;
}
.content-container {
  max-width: var(--content-max);
  margin: 0 auto;
}
/* ===== 3. HEADER & NAVIGATION ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-primary);
  height: var(--header-height);
}
[data-theme="dark"] .site-header {
  background: rgba(15, 23, 42, 0.85);
}
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative; /* Important for containing absolutely positioned children */
  height: var(--header-height);
  gap: var(--space-4xl);
}
/* Header right aligned actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-left: auto;
}
@media (max-width: 900px){
  .header-actions { gap: var(--space-md); }
}
.site-title {
  display: flex;
  flex-shrink: 0; /* Prevent shrinking */
  align-items: center;
  gap: var(--space-md);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  text-decoration: none;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}
.site-title:hover {
  color: var(--primary);
  background: var(--bg-secondary);
  transform: translateY(-1px);
}
.logo-icon {
  width: 28px;
  height: 28px;
  color: var(--primary);
  transition: transform var(--transition-normal);
}
.site-title:hover .logo-icon {
  transform: rotate(-5deg) scale(1.1);
}
/* Main Navigation (Desktop) */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  /* Fix for potential flexbox glitches with absolutely positioned children */
  position: relative;
  z-index: 1; /* Ensure it's above other header content but below mobile nav */
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-lg);
  white-space: nowrap;
  transition: all var(--transition-fast);
}
.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-full);
  transform: translateX(-50%);
  transition: all var(--transition-fast);
}
.nav-link:hover {
  color: var(--primary);
  background: var(--bg-secondary);
}
.nav-link:hover::before {
  width: 80%;
}
.nav-link.active {
  color: var(--primary);
  background: var(--bg-secondary);
  font-weight: var(--font-semibold);
}
/* Focus Styles (applied via :focus-visible) */
.nav-link:hover:not(.active) {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}
/* Dark Mode Toggle */
.dark-mode-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  color: var(--text-primary);
  flex-shrink: 0; /* Prevent shrinking */
  cursor: pointer;
  transition: all var(--transition-fast);
}
.dark-mode-toggle:hover {
  background: var(--bg-secondary);
  border-color: var(--primary);
  transform: scale(1.05);
}
.sun-icon,
.moon-icon {
  width: 20px;
  height: 20px;
  transition: opacity var(--transition-fast);
}
.moon-icon {
  display: none;
}
[data-theme="dark"] .sun-icon {
  display: none;
}
[data-theme="dark"] .moon-icon {
  display: block;
}
/* Mobile Navigation Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  background: var(--bg-primary);
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  flex-shrink: 0; /* Prevent shrinking */
  z-index: 110; /* Ensure it's clickable above other elements */
}
.nav-toggle-bar {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
  margin: 0 auto;
  transform-origin: center;
}
.nav-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
/* Mobile Navigation Overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  z-index: 90; /* Below the nav menu */
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
  pointer-events: none; /* Prevent interaction when hidden */
}
.nav-open #navOverlay {
  opacity: 1;
  visibility: visible;
  pointer-events: auto; /* Allow interaction when visible */
}
/* Mobile Styles (Critical Fix Area) */
@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex; /* Show the toggle button */
  }
  /* Hide desktop navigation links by default on mobile */
  .header-nav {
    display: none;
  }
  /* Active state for mobile navigation - Show the menu */
  .nav-open .header-nav {
    display: flex; /* Make it visible */
    position: fixed;
    top: var(--header-height);
    right: 0;
    width: min(320px, 80%);
    background: var(--bg-primary);
    border-left: 1px solid var(--border-primary);
    border-bottom: 1px solid var(--border-primary);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2xl) var(--space-xl) var(--space-3xl);
    flex-direction: column;
    gap: var(--space-sm);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    overscroll-behavior: contain; /* Prevent scrolling the body when menu reaches top/bottom */
    /* Critical Fix: Use translate3d for hardware acceleration */
    transform: translate3d(100%, 0, 0);
    transition: transform 0.4s cubic-bezier(0.65, 0.05, 0.36, 1);
    z-index: 120; /* Above overlay */
    /* Isolate the animation context */
    /* Removed will-change for potential performance issues */
  }
  /* Active state for the menu being open */
  .nav-open .header-nav {
    transform: translate3d(0, 0, 0);
  }
  /* Prevent body scroll when menu is open */
  body.nav-open {
    overflow: hidden;
  }
  /* Style links for mobile */
  .nav-open .nav-link {
    font-size: var(--text-base);
    padding: var(--space-md) var(--space-lg);
    width: 100%;
    text-align: left;
  }
  /* Hide the underline pseudo-element on mobile */
  .nav-open .nav-link::before {
    display: none;
  }
  /* Ensure the dark mode toggle is correctly placed in the header flex container */
  .dark-mode-toggle {
    display: flex;
    flex: 0 0 auto; /* Don't grow or shrink, keep original size */
    width: 44px;
    height: 44px;
    order: 3; /* Move it to the end if needed by layout */
    align-self: center; /* Align within the flex line */
    z-index: 110; /* Ensure it's clickable */
  }
  /* Disable transitions initially to prevent glitches on page load */
  body:not(.js-ready) .header-nav,
  body:not(.js-ready) .nav-toggle-bar,
  body:not(.js-ready) .nav-overlay {
    transition: none !important;
  }
}
/* ===== 4. MAIN CONTENT SECTIONS ===== */
/* Hero Section */
.hero-section {
  position: relative;
  padding: var(--space-8xl) 0 var(--space-7xl);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 20%, rgb(99 102 241 / 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, rgb(139 92 246 / 0.05) 0%, transparent 50%);
}
[data-theme="dark"] .hero-section::before {
  background:
    radial-gradient(circle at 30% 20%, rgb(129 140 248 / 0.12) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, rgb(196 181 253 / 0.08) 0%, transparent 50%);
}
.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  animation: fadeInUp 0.8s ease-out;
}
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.hero-title {
  font-size: clamp(var(--text-3xl), 8vw, var(--text-6xl));
  font-weight: var(--font-extrabold);
  line-height: 1.1;
  margin: 0 0 var(--space-2xl);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
[data-theme="dark"] .gradient-text {
  background: linear-gradient(135deg, var(--primary-light) 0%, #c4b5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-description {
  font-size: clamp(var(--text-lg), 4vw, var(--text-xl));
  color: var(--text-secondary);
  margin: 0 0 var(--space-5xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}
.hero-actions {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  margin-bottom: var(--space-6xl);
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: var(--space-5xl);
  justify-content: center;
  flex-wrap: wrap;
}
.stat-item {
  text-align: center;
  position: relative;
}
.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: calc(-1 * var(--space-2xl));
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 50px;
  background: var(--border-primary);
}
.stat-number {
  display: block;
  font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
  font-weight: var(--font-extrabold);
  margin-bottom: var(--space-sm);
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: var(--font-medium);
}
/* Section General Styles */
.section {
  padding: var(--section-pad-y) 0;
  position: relative;
  scroll-margin-top: calc(var(--header-height) + 1rem);
}
/* Tighten stacked sections slightly */
.section + .section { margin-top: -0.25rem; }
/* Ensure last child inside section doesn't add extra space */
.section > :last-child { margin-bottom: 0; }
.section:nth-child(even) {
  background: var(--bg-secondary);
}
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}
.section-title {
  font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
  font-weight: var(--font-extrabold);
  margin: 0 0 var(--space-2xl);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.section-description {
  font-size: clamp(var(--text-base), 3vw, var(--text-xl));
  color: var(--text-secondary);
  margin: 0;
  max-width: 800px;
  margin-inline: auto;
  line-height: 1.7;
}
.meta-chips {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-primary);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
/* ===== 5. COMPONENTS ===== */
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-3xl);
  border: 2px solid transparent;
  border-radius: var(--radius-xl);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  min-width: 160px;
  justify-content: center;
  transition: all var(--transition-fast);
  /* Removed will-change for potential performance issues */
}
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}
.btn:hover::before {
  left: 100%;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-primary);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--bg-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
/* Benefit Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
}
.benefit-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-2xl);
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  min-height: 160px;
  justify-content: center;
  /* Removed will-change for potential performance issues */
}
.benefit-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.benefit-card .icon-badge {
  width: 40px;
  height: 40px;
  color: var(--primary);
  margin-bottom: var(--space-lg);
  transition: transform var(--transition-normal);
}
.benefit-card:hover .icon-badge {
  transform: scale(1.05);
}
.benefit-card h3 {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}
.benefit-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-xs);
  line-height: 1.4;
}
/* Alerts */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  margin: var(--space-xl) 0;
  border: 1px solid var(--border-primary);
}
.alert-info {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.2);
  color: var(--info);
}
.alert-warning {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(44, 35, 19, 0.2);
  color: var(--warning);
}
.alert-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  margin-top: 2px;
}
/* Improve inline SVG rendering (prevents visual clipping on some mobile browsers) */
.alert-icon,
.note-icon,
.icon-badge,
.resource-category-icon,
.search-icon,
.clear-icon-svg,
.sun-icon,
.moon-icon,
.logo-icon {
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
  overflow: visible; /* Avoid stroke being cut at bounds */
  display: inline-block;
}
/* Ensure consistent vertical alignment */
.alert-icon { vertical-align: middle; }
/* Speed Section */
.speed-section {
  background: var(--bg-secondary);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-primary);
  padding: var(--space-4xl);
  margin: var(--space-3xl) 0;
}
.speed-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}
.speed-header h3 {
  margin: 0 0 var(--space-md);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
}
.speed-header p {
  margin: 0;
  color: var(--text-secondary);
  max-width: 600px;
  margin-inline: auto;
}
.speed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}
.speed-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-normal);
  min-height: 120px;
  /* Removed will-change for potential performance issues */
}
.speed-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.speed-card .service-name {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  font-size: var(--text-base);
}
.speed-card .speed-test-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
/* Important Notes */
.important-notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
}
.note-card {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-2xl);
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}
.note-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.note-icon {
  width: 24px;
  height: 24px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}
.note-content h3 {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}
.note-content p {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.5;
}
/* Resources */
.resources-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: var(--space-5xl);
}
.resource-category {
  background: var(--bg-elevated);
  border-radius: var(--radius-2xl);
  padding: var(--space-4xl);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-sm);
}
.resource-category h3 {
  margin: 0 0 var(--space-2xl);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.resource-category-icon {
  width: 28px;
  height: 28px;
}
.resource-list {
  display: grid;
  gap: var(--space-lg);
}
.resource-item {
  display: block;
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-normal);
}
.resource-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
  background: var(--bg-primary);
}
.resource-item strong {
  display: block;
  color: var(--text-primary);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-sm);
  font-size: var(--text-base);
}
.resource-item span {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.5;
}
/* Data Tables */
.data-table-container {
  background: var(--bg-elevated);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-primary);
  margin: var(--space-3xl) 0;
  overflow: hidden;
}
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-2xl);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  min-width: 600px;
}
/* Table toolbar */
.table-toolbar {
  display: flex;
  justify-content: space-between;
  gap: var(--space-xl);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
  align-items: center;
}
/* Resources enhancements */
.enhanced-resources .resource-category.elevated { position: relative; border: 1px solid var(--border-primary); box-shadow: var(--shadow-md); }
.resource-list.cards-3 { grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); display: grid; }
.resource-item.accent-hover { position: relative; overflow: hidden; }
.resource-item.accent-hover::after { content:""; position:absolute; inset:0; background:linear-gradient(135deg, rgba(99,102,241,.08), rgba(139,92,246,.08)); opacity:0; transition:opacity var(--transition-fast); }
.resource-item.accent-hover:hover::after { opacity:1; }
.resource-item.static { cursor: default; background: var(--bg-secondary); }
/* Footer improvements */
.footer-content.improved { position: relative; }
.newsletter-form { display:flex; gap: var(--space-sm); margin-top: var(--space-2xl); }
.newsletter-form input { flex:1; padding: var(--space-sm) var(--space-md); border:1px solid var(--border-primary); background: var(--bg-primary); border-radius: var(--radius-md); font-size: var(--text-sm); }
.newsletter-form button { padding: var(--space-sm) var(--space-lg); border:1px solid var(--border-primary); background: var(--primary); color:#fff; font-size: var(--text-sm); border-radius: var(--radius-md); cursor: not-allowed; opacity:.5; }
.social-links { margin-top: var(--space-xl); display:flex; gap: var(--space-md); }
.social-btn { width:36px; height:36px; display:flex; align-items:center; justify-content:center; background: var(--bg-primary); border:1px solid var(--border-primary); border-radius: var(--radius-full); color: var(--text-secondary); transition: all var(--transition-fast); }
.social-btn:hover { background: var(--primary); color:#fff; border-color: var(--primary); transform: translateY(-2px); }
.visually-hidden { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0; }
/* Compact on small screens adjust toolbar */
@media (max-width:600px){
  .table-toolbar { flex-direction: column; align-items: stretch; }
}
th,
td {
  padding: var(--space-lg) var(--space-xl);
  text-align: left;
  border-bottom: 1px solid var(--border-primary);
}
th {
  background: var(--primary);
  color: white;
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--text-xs);
  position: sticky;
  top: 0;
  z-index: 100; /* Increased z-index for table headers */
}
tr:hover {
  background: var(--bg-secondary);
}
.pricing-table .service-name {
  color: inherit;
}
#file-hosts-table tr:nth-child(even),
.enhanced-table tr:nth-child(even),
.pricing-table tr:nth-child(even) {
  background-color: var(--bg-tertiary);
}
#file-hosts-table th:first-child,
#file-hosts-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 101; /* Increased z-index for sticky first column */
  box-shadow: 2px 0 6px -4px rgba(0, 0, 0, 0.06);
}
#file-hosts-table td:first-child {
  background-color: var(--bg-primary);
}
.filter-results {
  text-align: center;
  padding: 0.1em;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-family: 'Courier New', Courier, monospace;
}
.table-check, .table-cross{
padding: 0.2em;
border-radius: 50px;
}
.table-check{
background-color: rgba(90, 221, 90, 0.568);
}
.table-cross{
    background-color: #db747465;
}
/* Search */
.search-section {
  margin-bottom: var(--space-4xl);
}
.search-container {
  position: relative;
  max-width: 500px;
  margin: 0 auto;
}
.search-icon {
  position: absolute;
  left: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  width: 20px;
  height: 20px;
}
.search-input {
  width: 100%;
  padding: var(--space-lg) var(--space-5xl) var(--space-lg) var(--space-5xl);
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  background: var(--bg-primary);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
}
.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}
.clear-icon {
  position: absolute;
  right: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  width: 20px;
  height: 20px;
}
.search-input:not(:placeholder-shown) + .clear-icon {
  opacity: 1;
  visibility: visible;
}
.clear-icon:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}
/* Status Grid */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}
.status-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-2xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  text-decoration: none;
  transition: all var(--transition-normal);
  min-height: 120px;
  /* Removed will-change for potential performance issues */
}
.status-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.status-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}
.service-name {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}
.service-status-indicator {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--success);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}
.status-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.5;
}
/* Referral Section */
.referral-section {
  margin: var(--space-6xl) 0;
  padding: var(--space-4xl);
  background: var(--bg-secondary);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-primary);
  text-align: center;
}
.referral-header h3 {
  margin: 0 0 var(--space-md);
  color: var(--text-primary);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
}
.referral-header p {
  margin: 0 auto var(--space-2xl);
  color: var(--text-secondary);
  max-width: 600px;
}
.referral-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-lg);
  justify-items: center;
}
.referral-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  width: 100%;
  max-width: 200px;
  transition: all var(--transition-normal);
  min-height: 100px;
  /* Removed will-change for potential performance issues */
}
.referral-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.referral-card .service-name {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  font-size: var(--text-base);
}
.referral-badge,
.speed-test-label {
  font-size: var(--text-xs);
  color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
/* Compare Section */
.compare-controls {
  display: flex;
  align-items: end;
  gap: var(--space-2xl);
  margin-bottom: var(--space-4xl);
  flex-wrap: wrap;
}
.compare-select-group {
  flex: 1;
  min-width: 250px;
}
.compare-select-group label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
}
.select-wrapper {
  position: relative;
}
select {
  width: 100%;
  padding: var(--space-md) var(--space-4xl) var(--space-md) var(--space-lg);
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--text-base);
  cursor: pointer;
  appearance: none;
  transition: all var(--transition-fast);
}
select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}
.select-wrapper::after {
  content: '';
  position: absolute;
  right: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid var(--text-tertiary);
  pointer-events: none;
}
.compare-vs {
  flex-shrink: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--primary);
  background: var(--bg-secondary);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-primary);
  margin-bottom: var(--space-sm);
}
.empty-state {
  text-align: center;
  padding: var(--space-6xl);
}
.empty-state-icon {
  width: 64px;
  height: 64px;
  color: var(--text-tertiary);
  margin: 0 auto var(--space-xl);
}
.empty-state h3 {
  margin: 0 0 var(--space-md);
  font-size: var(--text-xl);
  color: var(--text-primary);
  font-weight: var(--font-semibold);
}
.empty-state p {
  margin: 0;
  color: var(--text-secondary);
}
.error-state{
  padding: 0.5em;
  background-color: #ff97e054;
  color: #842029;
  border-radius: var(--radius-md);
  text-align: center;
}
.error-dataurl{
font-family: 'Courier New', Courier, monospace;
text-decoration: underline;
}
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-5xl);
  color: var(--text-secondary);
}
.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-primary);
  border-top: 3px solid var(--primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin-bottom: var(--space-lg);
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
/* Comparison Specific Styles */
.comparison-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding: var(--space-2xl);
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2xl);
}
.comparison-header h3 {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  text-align: center;
}
.comparison-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  flex-wrap: wrap;
}
.comparison-stats .stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 80px;
}
.comparison-stats .stat-label {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: var(--font-medium);
}
.comparison-stats .stat-value {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--primary);
}
.comparison-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}
.comparison-actions .btn {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-sm);
  min-width: auto;
}
.comparison-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}
.comparison-filters .filter-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.comparison-filters .filter-option:hover {
  color: var(--text-primary);
}
.comparison-filters input[type="radio"] {
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
}
.comparison-filters input[type="radio"]:checked + span {
  color: var(--primary);
  font-weight: var(--font-semibold);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-lg);
}
.comparison-table th,
.comparison-table td {
  padding: var(--space-md);
  text-align: center;
  border-bottom: 1px solid var(--border-primary);
}
.comparison-table th {
  background: var(--bg-secondary);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}
.comparison-table .provider-header {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
}
.comparison-row:hover {
  background: var(--bg-secondary);
}
.comparison-hiding {
  opacity: 0;
  transform: scale(0.95);
  transition: all var(--transition-normal);
}
/* ===== 6. FOOTER ===== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  padding: var(--space-7xl) 0 var(--space-4xl);
  margin-top: auto;
}
.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-5xl);
  margin-bottom: var(--space-5xl);
}
.footer-section h4,
.footer-section h5 {
  margin: 0 0 var(--space-xl);
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}
.footer-section h5 {
  font-size: var(--text-base);
  margin-bottom: var(--space-lg);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.footer-logo {
  width: 32px;
  height: 32px;
  color: var(--primary);
}
.footer-brand h4 {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
}
.footer-description {
  margin: 0 0 var(--space-xl);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 300px;
}
.footer-stats {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}
.footer-stat {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: var(--space-md);
}
.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-size: var(--text-sm);
  line-height: 1.5;
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-bottom {
  padding-top: var(--space-4xl);
  border-top: 1px solid var(--border-primary);
}
.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-3xl);
}
.footer-left p {
  margin: 0 0 var(--space-sm);
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}
.footer-disclaimer {
  font-size: var(--text-xs) !important;
  color: var(--text-muted) !important;
  font-style: italic;
}
.footer-left a {
  color: var(--primary);
  text-decoration: none;
}
.footer-left a:hover {
  text-decoration: underline;
}
.footer-right {
  text-align: right;
}
.footer-meta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.last-updated {
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.github-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.github-link:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
/* ===== 7. UTILITY & GLOBAL COMPONENTS ===== */
/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--space-2xl);
  right: var(--space-2xl);
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  z-index: 50;
  transition: all var(--transition-normal);
  will-change: transform; /* Kept for back-to-top as it's a critical animation */
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}
/* ===== 8. MEDIA QUERIES ===== */
/* Large Desktop */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-xl);
  }
  .resources-categories {
    grid-template-columns: 1fr;
  }
}
/* Tablet */
@media (max-width: 768px) {
  .header-nav {
    display: none;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .hero-stats {
    gap: var(--space-2xl);
  }
  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
  }
  .benefit-card {
    padding: var(--space-lg);
    min-height: 140px;
  }
  .benefit-card .icon-badge {
    width: 32px;
    height: 32px;
    margin-bottom: var(--space-md);
  }
  .benefit-card h3 {
    font-size: var(--text-sm);
  }
  .comparison-header {
    padding: var(--space-lg);
    gap: var(--space-md);
  }
  .comparison-stats {
    gap: var(--space-lg);
  }
  .comparison-filters {
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
  }
  .compare-controls {
    flex-direction: column;
    gap: var(--space-xl);
  }
  .compare-select-group {
    min-width: 100%;
  }
  .important-notes-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }
  .footer-brand h3 {
    font-size: var(--text-lg);
  }
}
/* Mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-lg);
  }
  .section {
  padding: var(--space-3xl) 0; /* Tighten vertical rhythm on very small screens */
  }
  .stat-item:not(:last-child)::after {
    display: none;
  }
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .benefit-card {
    padding: var(--space-xl);
    min-height: auto;
  }
  .comparison-header h3 {
    font-size: var(--text-lg);
  }
  .comparison-stats {
    flex-direction: column;
    gap: var(--space-md);
  }
  .comparison-filters {
    gap: var(--space-sm);
  }
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .footer-brand {
    text-align: center;
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(var(--text-rgb), 0.1);
    margin-bottom: var(--space-lg);
  }
  .footer-links {
    justify-content: center;
  }
  .footer-links h4 {
    text-align: center;
    margin-bottom: var(--space-md);
  }
  .footer-bottom {
    text-align: center;
  }
  .hero-meta {
    margin-bottom: var(--space-2xl);
  }
  .hero-badge {
    font-size: 10px;
  }
}
/* Additional responsive tuning for large hero & section spacing */
@media (max-width: 900px) { .hero-section { padding: clamp(3.5rem, 10vw, 5rem) 0 clamp(3rem, 8vw, 4rem); } }
@media (max-width: 700px) { .hero-section { padding: clamp(3rem, 9vw, 4rem) 0 clamp(2.5rem, 7vw, 3.5rem); } }
@media (max-width: 520px) { .hero-section { padding: clamp(2.5rem, 8vw, 3.5rem) 0 clamp(2rem, 6vw, 3rem); } }
@media (max-width: 400px) { .hero-section { padding: clamp(2rem, 7vw, 3rem) 0 clamp(1.5rem, 6vw, 2.5rem); } }
/* Ultra-small devices (<=20em ~ 320px) */
@media (max-width: 20em) {
  html { font-size: 14px; }
  body { line-height: 1.5; }
  .site-header { height: 3.75rem; }
  :root { --header-height: 3.75rem; }
  .header-content { gap: var(--space-lg); }
  .site-title { font-size: var(--text-lg); padding: var(--space-xs) var(--space-md); }
  .nav-link { padding: var(--space-sm) var(--space-md); font-size: 0.75rem; }
  .dark-mode-toggle { width: 38px; height: 38px; }
  .hero-title { margin-bottom: var(--space-xl); }
  .hero-section { padding: 2.25rem 0 1.75rem; }
  .hero-description { font-size: 0.95rem; }
  .hero-stats { gap: var(--space-lg); }
  .stat-number { font-size: clamp(1.75rem, 10vw, 2.25rem); }
  .section { padding: 2rem 0; }
  .section-header { margin-bottom: var(--space-xl); }
  .section-title { font-size: clamp(1.75rem, 9vw, 2.25rem); margin-bottom: var(--space-xl); }
  .section-description { font-size: clamp(0.95rem, 3.2vw, 1.05rem); }
  .benefit-card { padding: var(--space-lg); }
  .benefit-card h3 { font-size: 0.9rem; }
  .alert { padding: var(--space-lg); margin: var(--space-lg) 0; }
  .note-card { padding: var(--space-lg); }
  .compare-controls { gap: var(--space-lg); }
  .data-table-container { font-size: 0.85rem; }
}
/* Print Styles */
@media print {
  .site-header,
  .hero-section,
  .referral-section,
  .site-footer,
  .back-to-top,
  .dark-mode-toggle {
    display: none !important;
  }
  .section {
    page-break-inside: avoid;
  }
}
/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
  .header-nav,
  .nav-toggle-bar,
  .btn::before,
  .benefit-card,
  .status-card,
  .referral-card,
  .speed-card,
  .back-to-top {
    transition: none !important;
    animation: none !important;
  }
}
/* High Contrast */
@media (prefers-contrast: high) {
  :root {
    --border-primary: #000;
    --text-secondary: #000;
  }
}
/* Coarse Pointer (Touch Devices) */
@media (pointer: coarse) {
  .nav-link:hover,
  .btn:hover,
  .status-card:hover,
  .benefit-card:hover,
  .speed-card:hover,
  .referral-card:hover,
  .note-card:hover,
  .resource-item:hover {
    transform: none;
  }
}