/* Base Styles */
:root {
  --primary-color: #4c66e9;
  --primary-light: #e5eaff;
  --primary-dark: #3a4fc1;
  --secondary-color: #ff7846;
  --secondary-light: #ffe9e3;
  --secondary-dark: #e5633c;
  --neutral-900: #121826;
  --neutral-800: #1f2937;
  --neutral-700: #374151;
  --neutral-600: #4b5563;
  --neutral-500: #6b7280;
  --neutral-400: #9ca3af;
  --neutral-300: #d1d5db;
  --neutral-200: #e5e7eb;
  --neutral-100: #f3f4f6;
  --neutral-50: #f9fafb;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --info-color: #3b82f6;
  --excellent-color: #10b981;
  --good-color: #f59e0b;
  --high-color: #ef4444;
  --border-radius-sm: 4px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease;
  --max-width: 1200px;
  --header-height: 80px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1.6rem;
  line-height: 1.6;
  color: var(--neutral-700);
  background-color: var(--neutral-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  color: var(--neutral-900);
  margin-bottom: 1.6rem;
}

h1 {
  font-size: 4.4rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 3.6rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 2.4rem;
}

h4 {
  font-size: 2rem;
}

p {
  margin-bottom: 1.6rem;
}

.text-center {
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 1.6rem;
  line-height: 1.5;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

.btn-lg {
  padding: 1.2rem 2.4rem;
  font-size: 1.8rem;
}

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

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

.btn-secondary {
  background-color: var(--neutral-100);
  color: var(--neutral-800);
}

.btn-secondary:hover {
  background-color: var(--neutral-200);
  color: var(--neutral-900);
}

.btn-text {
  background-color: transparent;
  color: var(--primary-color);
  padding: 0.5rem 1rem;
}

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

.btn-full {
  width: 100%;
}

.btn i {
  margin-right: 0.8rem;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  margin-bottom: 5rem;
}

.section-title {
  margin-bottom: 1.6rem;
}

.section-subtitle {
  font-size: 1.8rem;
  color: var(--neutral-600);
  margin-bottom: 0;
}

/* Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: var(--transition);
}

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

.logo {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  gap: 3rem;
}

.nav-links a {
  color: var(--neutral-700);
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary-color);
}

.cta-buttons {
  display: flex;
  gap: 1rem;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 3rem;
  height: 2.1rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10;
}

.mobile-menu-btn span {
  width: 100%;
  height: 0.3rem;
  background-color: var(--neutral-800);
  border-radius: 0.2rem;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  padding: 14rem 0 8rem;
  background-color: white;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}

.hero-content {
  max-width: 60rem;
}

.hero h1 {
  margin-bottom: 2rem;
}

.hero p {
  font-size: 1.8rem;
  margin-bottom: 3.2rem;
  color: var(--neutral-600);
}

.cta-group {
  display: flex;
  gap: 1.6rem;
  margin-bottom: 4rem;
}

.hero-stats {
  display: flex;
  gap: 3.2rem;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 3.6rem;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1.2;
}

.stat-label {
  font-size: 1.4rem;
  color: var(--neutral-600);
}

/* Trusted By Section */
.trusted-by {
  padding: 4rem 0;
  background-color: var(--neutral-50);
}

.logo-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 4rem;
  margin-top: 3rem;
}

.logo-grid img {
  height: 3rem;
  opacity: 0.7;
  transition: var(--transition);
}

.logo-grid img:hover {
  opacity: 1;
}

/* What is KGR Section */
.what-is-kgr {
  padding: 8rem 0;
  background-color: white;
}

.kgr-formula-container {
  margin-bottom: 5rem;
}

.kgr-formula {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.formula-element h3,
.formula-interpretation h3 {
  text-align: center;
  margin-bottom: 2rem;
}

.formula-box {
  background-color: var(--primary-light);
  padding: 3rem;
  border-radius: var(--border-radius);
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.formula-box p {
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 0;
}

.formula-var {
  font-weight: 700;
  color: var(--primary-color);
}

.formula-fraction {
  display: inline-block;
  text-align: center;
  vertical-align: middle;
  margin: 0 0.5rem;
}

.numerator, .denominator {
  display: block;
}

.numerator {
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 0.2rem;
  margin-bottom: 0.4rem;
}

.interpretation-scale {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.scale-item {
  padding: 2rem;
  border-radius: var(--border-radius);
  text-align: center;
}

.scale-item.excellent {
  background-color: rgba(16, 185, 129, 0.1);
}

.scale-item.good {
  background-color: rgba(245, 158, 11, 0.1);
}

.scale-item.high {
  background-color: rgba(239, 68, 68, 0.1);
}

.scale-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.scale-item.excellent .scale-value,
.scale-item.excellent .scale-label {
  color: var(--excellent-color);
}

.scale-item.good .scale-value,
.scale-item.good .scale-label {
  color: var(--good-color);
}

.scale-item.high .scale-value,
.scale-item.high .scale-label {
  color: var(--high-color);
}

.scale-label {
  display: block;
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
}

.scale-desc {
  display: block;
  font-size: 1.4rem;
  color: var(--neutral-600);
}

.kgr-explanation {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}

.explanation-item {
  padding: 2rem;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  text-align: center;
}

.item-icon {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  background-color: var(--primary-light);
  color: var(--primary-color);
  font-size: 2.4rem;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 2rem;
}

.explanation-item h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.explanation-item p {
  font-size: 1.5rem;
  color: var(--neutral-600);
  margin-bottom: 0;
}

/* Features Section */
.features {
  padding: 8rem 0;
  background-color: var(--neutral-50);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}

.feature-card {
  padding: 3rem;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-lg);
}

.feature-icon {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  background-color: var(--primary-light);
  color: var(--primary-color);
  font-size: 2.4rem;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 2rem;
}

.feature-card h3 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.feature-card p {
  font-size: 1.5rem;
  color: var(--neutral-600);
  margin-bottom: 0;
}

/* Playground Section */
.playground {
  padding: 8rem 0;
  background-color: white;
}

.playground-tabs {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 4rem;
}

.tab-btn {
  padding: 1rem 2rem;
  border: none;
  background-color: var(--neutral-100);
  color: var(--neutral-700);
  font-size: 1.6rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active {
  background-color: var(--primary-color);
  color: white;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.input-container {
  margin-bottom: 3rem;
}

.input-container label {
  display: block;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--neutral-800);
}

.input-group {
  display: flex;
  gap: 1rem;
}

.input-group input {
  flex-grow: 1;
  padding: 1.2rem 1.6rem;
  border: 1px solid var(--neutral-300);
  border-radius: var(--border-radius);
  font-size: 1.6rem;
  transition: var(--transition);
}

.input-group input:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(76, 102, 233, 0.1);
}

.input-note {
  margin-top: 0.8rem;
  font-size: 1.4rem;
  color: var(--neutral-500);
}

.filters-container {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.filter-group label {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--neutral-700);
}

.filter-group select {
  padding: 0.8rem 1.2rem;
  border: 1px solid var(--neutral-300);
  border-radius: var(--border-radius);
  font-size: 1.4rem;
  background-color: white;
  min-width: 15rem;
}

.results-container {
  background-color: var(--neutral-50);
  border-radius: var(--border-radius);
  padding: 3rem;
  box-shadow: var(--box-shadow);
}

.results-loading {
  display: none;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 2rem;
  padding: 5rem 0;
}

.spinner {
  width: 4rem;
  height: 4rem;
  border: 4px solid rgba(76, 102, 233, 0.1);
  border-left-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.result-overview {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.kgr-gauge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.gauge-value {
  font-size: 4.8rem;
  font-weight: 700;
  color: var(--excellent-color);
}

.gauge-label {
  font-size: 1.4rem;
  color: var(--neutral-500);
  margin-bottom: 0.5rem;
}

.gauge-rating {
  font-size: 1.6rem;
  font-weight: 600;
  padding: 0.5rem 1.5rem;
  border-radius: 2rem;
  color: white;
}

.gauge-rating.excellent {
  background-color: var(--excellent-color);
}

.gauge-rating.good {
  background-color: var(--good-color);
}

.gauge-rating.high {
  background-color: var(--high-color);
}

.result-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 2rem;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.metric-label {
  font-size: 1.4rem;
  color: var(--neutral-500);
}

.metric-value {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--neutral-800);
}

.metric-value.excellent {
  color: var(--excellent-color);
}

.metric-value.good {
  color: var(--good-color);
}

.metric-value.high {
  color: var(--high-color);
}

.result-interpretation {
  background-color: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  margin-bottom: 3rem;
}

.result-interpretation h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.result-interpretation p {
  font-size: 1.5rem;
  margin-bottom: 0;
}

.result-actions {
  display: flex;
  gap: 1.5rem;
  justify-content: flex-end;
}

.keyword-table-container {
  overflow-x: auto;
  margin-bottom: 2rem;
}

.keyword-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1.5rem;
}

.keyword-table th,
.keyword-table td {
  padding: 1.2rem 1.6rem;
  text-align: left;
  border-bottom: 1px solid var(--neutral-200);
}

.keyword-table th {
  font-weight: 600;
  color: var(--neutral-700);
  background-color: var(--neutral-100);
}

.keyword-table tr:hover {
  background-color: var(--neutral-100);
}

.difficulty {
  font-weight: 600;
  padding: 0.2rem 0.8rem;
  border-radius: 2rem;
  display: inline-block;
  text-align: center;
}

.difficulty.excellent {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--excellent-color);
}

.difficulty.good {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--good-color);
}

.difficulty.high {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--high-color);
}

.trend {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
}

.trend.rising {
  color: var(--excellent-color);
}

.trend.stable {
  color: var(--good-color);
}

.trend.declining {
  color: var(--high-color);
}

.excellent-row {
  background-color: rgba(16, 185, 129, 0.05);
}

.good-row {
  background-color: rgba(245, 158, 11, 0.05);
}

.high-row {
  background-color: rgba(239, 68, 68, 0.05);
}

.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
}

.pagination-btn {
  background-color: var(--neutral-100);
  border: none;
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

.pagination-btn:hover:not(:disabled) {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-info {
  font-size: 1.4rem;
  color: var(--neutral-600);
}

.topic-chart {
  background-color: white;
  padding: 2rem;
  border-radius: var(--border-radius);
  margin-bottom: 3rem;
}

.topic-chart h3 {
  font-size: 1.8rem;
  margin-bottom: 2rem;
  text-align: center;
}

/* Competitor Comparison Section */
.competitor-comparison {
  padding: 8rem 0;
  background-color: var(--neutral-50);
}

.comparison-table-container {
  overflow-x: auto;
  margin-bottom: 4rem;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1.5rem;
}

.comparison-table th,
.comparison-table td {
  padding: 1.6rem;
  text-align: center;
  border-bottom: 1px solid var(--neutral-200);
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
}

.comparison-table thead th {
  background-color: var(--neutral-100);
  font-weight: 600;
}

.comp-logo {
  font-weight: 700;
  font-size: 1.8rem;
  color: var(--neutral-800);
}

.comp-logo.our-tool {
  color: var(--primary-color);
}

.feature-yes {
  color: var(--excellent-color);
  font-size: 2rem;
}

.feature-partial {
  color: var(--good-color);
  font-size: 2rem;
}

.feature-no {
  color: var(--high-color);
  font-size: 2rem;
}

.highlight-row {
  background-color: var(--primary-light);
}

.comparison-cta {
  text-align: center;
  max-width: 60rem;
  margin: 0 auto;
  padding: 3rem;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.comparison-cta p {
  font-size: 1.8rem;
  margin-bottom: 2rem;
}

/* Pain Points & Solutions Section */
.pain-points {
  padding: 8rem 0;
  background-color: white;
}

.pain-points-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  margin-bottom: 5rem;
}

.pain-point-card {
  padding: 3rem;
  background-color: var(--neutral-50);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.pain-point-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.pain-icon {
  width: 4.8rem;
  height: 4.8rem;
  border-radius: 50%;
  background-color: var(--high-color);
  color: white;
  font-size: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.pain-point-header h3 {
  font-size: 1.8rem;
  margin-bottom: 0;
}

.pain-description {
  font-style: italic;
  color: var(--neutral-600);
  padding: 1.5rem;
  background-color: white;
  border-radius: var(--border-radius);
  margin-bottom: 2rem;
  font-size: 1.5rem;
  position: relative;
}

.pain-description::before {
  content: '"';
  position: absolute;
  top: 0;
  left: 0.5rem;
  font-size: 5rem;
  line-height: 1;
  color: var(--neutral-200);
  z-index: 0;
}

.solution {
  display: flex;
  gap: 1.5rem;
}

.solution-icon {
  width: 4.8rem;
  height: 4.8rem;
  border-radius: 50%;
  background-color: var(--excellent-color);
  color: white;
  font-size: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
}

.solution-content h4 {
  font-size: 1.7rem;
  margin-bottom: 0.8rem;
  color: var(--excellent-color);
}

.solution-content p {
  font-size: 1.5rem;
  margin-bottom: 0;
}

.pain-points-cta {
  text-align: center;
  max-width: 60rem;
  margin: 0 auto;
  padding: 3rem;
  background-color: var(--primary-light);
  border-radius: var(--border-radius);
}

.pain-points-cta p {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: var(--primary-dark);
}

/* Testimonials Section */
.testimonials {
  padding: 8rem 0;
  background-color: var(--neutral-50);
}

.testimonials-slider {
  display: flex;
  overflow: hidden;
  margin-bottom: 3rem;
}

.testimonial-card {
  min-width: 100%;
  padding: 3rem;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.testimonial-content {
  margin-bottom: 3rem;
}

.testimonial-rating {
  color: var(--warning-color);
  font-size: 2rem;
  margin-bottom: 2rem;
}

.testimonial-text {
  font-size: 1.8rem;
  line-height: 1.6;
  color: var(--neutral-700);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.testimonial-author img {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  object-fit: cover;
}

.author-name {
  font-weight: 600;
  font-size: 1.8rem;
  color: var(--neutral-800);
  display: block;
  margin-bottom: 0.5rem;
}

.author-title {
  font-size: 1.4rem;
  color: var(--neutral-600);
}

.testimonials-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
}

.nav-dots {
  display: flex;
  gap: 0.8rem;
}

.dot {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background-color: var(--neutral-300);
  cursor: pointer;
  transition: var(--transition);
}

.dot.active {
  background-color: var(--primary-color);
  transform: scale(1.2);
}

.nav-btn {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  background-color: white;
  border: 1px solid var(--neutral-200);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

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

/* Results Section */
.results {
  padding: 8rem 0;
  background-color: white;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.result-card {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  padding: 3rem;
  background-color: var(--neutral-50);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  align-items: center;
}

.result-content h3 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  color: var(--excellent-color);
}

.result-content p {
  font-size: 1.6rem;
  margin-bottom: 2rem;
}

/* Pricing Section */
.pricing {
  padding: 8rem 0;
  background-color: var(--neutral-50);
}

.pricing-toggle {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: 4rem;
  font-size: 1.6rem;
  font-weight: 500;
}

.switch {
  position: relative;
  display: inline-block;
  width: 5rem;
  height: 2.6rem;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--neutral-300);
  transition: var(--transition);
}

.slider:before {
  position: absolute;
  content: "";
  height: 1.8rem;
  width: 1.8rem;
  left: 0.4rem;
  bottom: 0.4rem;
  background-color: white;
  transition: var(--transition);
}

input:checked + .slider {
  background-color: var(--primary-color);
}

input:checked + .slider:before {
  transform: translateX(2.4rem);
}

.slider.round {
  border-radius: 3.4rem;
}

.slider.round:before {
  border-radius: 50%;
}

.save-badge {
  background-color: var(--secondary-color);
  color: white;
  font-size: 1.2rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  border-radius: 2rem;
  margin-left: 1rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 5rem;
}

.pricing-card {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-lg);
}

.pricing-card.popular {
  transform: scale(1.05);
  z-index: 1;
  box-shadow: var(--box-shadow-lg);
  border: 2px solid var(--primary-color);
}

.pricing-card.popular:hover {
  transform: scale(1.05) translateY(-5px);
}

.popular-badge {
  position: absolute;
  top: 1.5rem;
  right: 0;
  background-color: var(--primary-color);
  color: white;
  font-size: 1.2rem;
  font-weight: 600;
  padding: 0.5rem 1.5rem;
  border-top-left-radius: 2rem;
  border-bottom-left-radius: 2rem;
}

.pricing-header {
  padding: 3rem;
  text-align: center;
  border-bottom: 1px solid var(--neutral-200);
}

.pricing-header h3 {
  font-size: 2.4rem;
  margin-bottom: 1.5rem;
}

.pricing-price {
  margin-bottom: 1.5rem;
}

.price {
  font-size: 4.8rem;
  font-weight: 700;
  color: var(--neutral-800);
  line-height: 1;
}

.price.annual {
  display: none;
  color: var(--primary-color);
}

.period {
  font-size: 1.6rem;
  color: var(--neutral-600);
}

.pricing-subtitle {
  font-size: 1.5rem;
  color: var(--neutral-600);
  margin-bottom: 0;
}

.pricing-features {
  padding: 3rem;
}

.pricing-features ul {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.5rem;
}

.pricing-features i {
  font-size: 1.8rem;
  color: var(--excellent-color);
}

.feature-disabled {
  color: var(--neutral-500);
}

.feature-disabled i {
  color: var(--neutral-400);
}

.pricing-cta {
  padding: 0 3rem 3rem;
}

.pricing-guarantee {
  display: flex;
  align-items: center;
  gap: 2rem;
  max-width: 80rem;
  margin: 0 auto;
  padding: 3rem;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.guarantee-icon {
  font-size: 4.8rem;
  color: var(--primary-color);
}

.guarantee-content h3 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.guarantee-content p {
  font-size: 1.6rem;
  margin-bottom: 0;
}

/* FAQ Section */
.faq {
  padding: 8rem 0;
  background-color: white;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.faq-item {
  border: 1px solid var(--neutral-200);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem;
  background-color: white;
  border: none;
  cursor: pointer;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--neutral-800);
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover {
  background-color: var(--neutral-50);
}

.faq-question i {
  transition: var(--transition);
}

.faq-question.active i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 2rem 2rem;
  font-size: 1.6rem;
  color: var(--neutral-600);
  margin-bottom: 0;
}

.faq-item.active .faq-answer {
  max-height: 100rem;
}

/* CTA Section */
.cta {
  padding: 8rem 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
}

.cta-content {
  max-width: 80rem;
  margin: 0 auto;
  text-align: center;
}

.cta-title {
  color: white;
  font-size: 3.6rem;
  margin-bottom: 2rem;
}

.cta-subtitle {
  font-size: 1.8rem;
  margin-bottom: 4rem;
  color: rgba(255, 255, 255, 0.9);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

/* Footer */
footer {
  padding: 8rem 0 4rem;
  background-color: var(--neutral-800);
  color: var(--neutral-300);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 5rem;
}

.footer-logo {
  font-size: 2.4rem;
  font-weight: 700;
  color: white;
  margin-bottom: 2rem;
}

.footer-desc {
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
  color: var(--neutral-400);
}

.social-links {
  display: flex;
  gap: 1.5rem;
}

.social-links a {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  background-color: var(--neutral-700);
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.8rem;
  transition: var(--transition);
}

.social-links a:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: white;
  font-size: 1.8rem;
  margin-bottom: 2rem;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-col a {
  color: var(--neutral-400);
  font-size: 1.5rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: white;
  transform: translateX(3px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 3rem;
  border-top: 1px solid var(--neutral-700);
}

.footer-copyright {
  font-size: 1.4rem;
  color: var(--neutral-500);
}

.language-switcher {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.language-switcher label {
  font-size: 1.4rem;
  color: var(--neutral-400);
}

.language-switcher select {
  padding: 0.6rem 1.2rem;
  background-color: var(--neutral-700);
  border: 1px solid var(--neutral-600);
  border-radius: var(--border-radius);
  color: white;
  font-size: 1.4rem;
}

/* Placeholder Tool Styles */
.placeholder-tool {
  background-color: var(--neutral-50);
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.placeholder-tool h3 {
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.placeholder-tool p {
  margin-bottom: 2.5rem;
  font-size: 1.6rem;
}

.sample-dashboard {
  background-color: white;
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.domain-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.domain-list li {
  display: flex;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background-color: var(--neutral-50);
  border-radius: var(--border-radius-sm);
}

.domain-name {
  font-weight: 600;
  color: var(--primary-color);
}

.domain-date {
  color: var(--neutral-500);
  font-size: 1.4rem;
}

/* Responsive Styles */
@media (max-width: 1200px) {
  .hero h1 {
    font-size: 3.8rem;
  }
  
  .kgr-formula {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pain-points-grid {
    grid-template-columns: 1fr;
  }
  
  .result-card {
    grid-template-columns: 1fr;
  }
  
  .result-image {
    max-width: 50%;
    margin: 0 auto;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.popular {
    transform: scale(1);
  }
  
  .pricing-card.popular:hover {
    transform: translateY(-5px);
  }
  
  .faq-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem 2rem;
  }
}

@media (max-width: 992px) {
  html {
    font-size: 56.25%;
  }
  
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 4rem;
  }
  
  .hero-content {
    max-width: 100%;
  }
  
  .cta-group {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .hero-image {
    max-width: 80%;
    margin: 0 auto;
  }
  
  .kgr-explanation {
    grid-template-columns: 1fr;
  }
  
  .interpretation-scale {
    grid-template-columns: 1fr;
  }
  
  .results-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 50%;
  }
  
  .nav-links,
  .cta-buttons {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .hero {
    padding-top: 12rem;
  }
  
  .hero h1 {
    font-size: 3.6rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .result-overview {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .result-metrics {
    grid-template-columns: 1fr;
  }
  
  .kgr-gauge {
    max-width: 20rem;
    margin: 0 auto;
  }
  
  .pricing-guarantee {
    flex-direction: column;
    text-align: center;
  }
  
  .cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 2rem;
    align-items: flex-start;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 3.2rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 2rem;
    align-items: center;
  }
  
  .logo-grid {
    gap: 2rem;
  }
  
  .logo-grid img {
    height: 2.5rem;
  }
  
  .input-group {
    flex-direction: column;
  }
  
  .filters-container {
    flex-direction: column;
  }
}

/* Print Styles */
@media print {
  header, .cta, footer, .hero-stats, .cta-buttons, .testimonials, .pricing, .faq {
    display: none;
  }
  
  body {
    font-size: 11pt;
    line-height: 1.5;
  }
  
  .container {
    width: 100%;
    max-width: 100%;
    padding: 0;
  }
  
  .hero, .features, .playground, .results {
    padding: 1cm 0;
  }
  
  h1 {
    font-size: 24pt;
  }
  
  h2 {
    font-size: 18pt;
  }
  
  h3 {
    font-size: 14pt;
  }
  
  a {
    text-decoration: none;
    color: black;
  }
  
  .btn {
    border: 1px solid #ccc;
    padding: 0.5cm;
  }
}