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

:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --secondary: #7c3aed;
  --accent: #0ea5e9;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f9fafb;
  --bg-white: #ffffff;
  --border-light: #e5e7eb;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-dark);
  background-color: var(--bg-white);
  line-height: 1.6;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ========== Navigation ========== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.nav-brand svg {
  width: 28px;
  height: 28px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 40px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  font-size: 15px;
  transition: all 0.3s ease;
  position: relative;
}

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

.nav-link.active {
  color: var(--primary);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 10px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(37, 99, 235, 0.3);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 24px;
}

/* ========== Common Styles ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

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

.section-dark {
  background: linear-gradient(135deg, #1f2937, #111827);
  color: white;
}

.section-title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-light);
  margin-bottom: 50px;
  max-width: 600px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
  background: var(--bg-light);
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.btn-white {
  background: white;
  color: var(--primary);
  border: 2px solid white;
}

.btn-white:hover {
  background: transparent;
  color: white;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* ========== Hero Section ========== */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #312e81 100%);
  color: white;
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(30px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text h1 {
  font-size: 56px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
  animation: slideInLeft 0.8s ease;
}

.hero-text p {
  font-size: 18px;
  margin-bottom: 30px;
  opacity: 0.9;
  animation: slideInLeft 0.8s ease 0.1s backwards;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  animation: slideInLeft 0.8s ease 0.2s backwards;
}

.hero-visual {
  position: relative;
  animation: slideInRight 0.8s ease;
}

.browser-mockup {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.browser-header {
  background: #f3f4f6;
  padding: 12px 16px;
  display: flex;
  gap: 8px;
  align-items: center;
  border-bottom: 1px solid #e5e7eb;
}

.browser-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.browser-dot.red { background: #ef4444; }
.browser-dot.yellow { background: #f59e0b; }
.browser-dot.green { background: #10b981; }

.browser-url {
  flex: 1;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  color: #6b7280;
  margin-left: 8px;
}

.browser-body {
  padding: 40px;
  background: linear-gradient(135deg, #f0f9ff 0%, #f3e8ff 100%);
  min-height: 300px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-light);
}

/* ========== Features Grid ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.feature-card {
  background: white;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 30px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.15);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--primary);
  fill: none;
  stroke-width: 2;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.feature-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========== Platforms Section ========== */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.platform-card {
  background: white;
  border: 2px solid var(--border-light);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  transition: all 0.3s ease;
}

.platform-card.featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(124, 58, 237, 0.05));
  transform: scale(1.05);
}

.platform-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.15);
}

.platform-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  color: white;
}

.platform-icon svg {
  width: 36px;
  height: 36px;
}

.platform-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.platform-version {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.platform-desc {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.6;
}

.platform-btn {
  width: 100%;
}

/* ========== Deep Dive Sections ========== */
.deep-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.deep-section.reverse {
  direction: rtl;
}

.deep-section.reverse > * {
  direction: ltr;
}

.deep-content h3 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.deep-content p {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.8;
}

.deep-list {
  list-style: none;
  margin: 20px 0;
}

.deep-list li {
  padding: 12px 0;
  padding-left: 30px;
  position: relative;
  font-size: 15px;
  color: var(--text-light);
}

.deep-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
}

.deep-visual {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
  border-radius: 12px;
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.deep-visual svg {
  width: 100%;
  height: auto;
  max-width: 400px;
}

/* ========== Reviews Section ========== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  background: white;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 24px;
  transition: all 0.3s ease;
}

.review-card:hover {
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.12);
  transform: translateY(-4px);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 16px;
}

.review-avatar.av1 { background: linear-gradient(135deg, var(--primary), var(--secondary)); }
.review-avatar.av2 { background: linear-gradient(135deg, var(--accent), var(--primary)); }
.review-avatar.av3 { background: linear-gradient(135deg, var(--secondary), var(--warning)); }
.review-avatar.av4 { background: linear-gradient(135deg, var(--success), var(--accent)); }
.review-avatar.av5 { background: linear-gradient(135deg, var(--warning), var(--danger)); }
.review-avatar.av6 { background: linear-gradient(135deg, var(--danger), var(--secondary)); }

.review-info {
  flex: 1;
}

.review-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--text-dark);
}

.review-role {
  font-size: 12px;
  color: var(--text-light);
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
}

.review-stars svg {
  width: 16px;
  height: 16px;
  fill: #f59e0b;
}

.review-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========== Stats Band ========== */
.stats-band {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 50px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  text-align: center;
}

.stat-item {
  animation: fadeIn 0.8s ease;
}

.stat-number {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 8px;
}

.stat-text {
  font-size: 15px;
  opacity: 0.9;
}

/* ========== Comparison Table ========== */
.comparison-wrap {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-light);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

.comparison-table th {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 16px;
  text-align: left;
  font-weight: 700;
  font-size: 14px;
}

.comparison-table td {
  padding: 16px;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:nth-child(even) {
  background: var(--bg-light);
}

.comparison-table .yes {
  color: var(--success);
  font-weight: 700;
}

.comparison-table .no {
  color: var(--text-light);
}

.comparison-table .partial {
  color: var(--warning);
  font-weight: 600;
}

/* ========== FAQ Section ========== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 16px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item.open {
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.12);
}

.faq-question {
  background: white;
  padding: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 15px;
  color: var(--text-dark);
  transition: all 0.3s ease;
}

.faq-item.open .faq-question {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(124, 58, 237, 0.05));
  color: var(--primary);
}

.faq-chevron {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

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

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 20px;
  background: var(--bg-light);
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ========== CTA Banner ========== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 60px 20px;
  border-radius: 16px;
  text-align: center;
  margin: 80px 0;
}

.cta-banner h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-banner p {
  font-size: 16px;
  margin-bottom: 30px;
  opacity: 0.95;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== Download Section ========== */
.download-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #312e81 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
}

.download-hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
}

.download-hero p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 30px;
}

.download-main {
  background: white;
  border-radius: 16px;
  padding: 40px;
  margin: 60px 0;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.download-card {
  background: white;
  border: 2px solid var(--border-light);
  border-radius: 12px;
  padding: 30px;
  margin-bottom: 24px;
  transition: all 0.3s ease;
}

.download-card.featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(124, 58, 237, 0.05));
}

.download-card:hover {
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.12);
  transform: translateY(-4px);
}

.download-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}

.download-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.download-icon svg {
  width: 36px;
  height: 36px;
}

.download-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-dark);
}

.download-meta {
  font-size: 13px;
  color: var(--text-light);
}

.download-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  margin: 20px 0;
  padding: 20px 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

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

.spec-label {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 6px;
}

.spec-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
}

.download-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.download-buttons .btn {
  flex: 1;
  min-width: 150px;
}

/* ========== Installation Guide ========== */
.guide-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 60px 0;
}

.guide-column h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.guide-column h3::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

.guide-steps {
  list-style: none;
}

.guide-step {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
}

.step-number {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-dark);
}

.step-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========== Requirements ========== */
.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin: 40px 0;
}

.requirement-card {
  background: white;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 24px;
}

.requirement-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dark);
}

.requirement-card h4::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
}

.requirement-list {
  list-style: none;
}

.requirement-list li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.requirement-list li::before {
  content: '•';
  color: var(--primary);
  font-weight: 700;
}

/* ========== Version Timeline ========== */
.version-list {
  list-style: none;
  position: relative;
  padding-left: 40px;
}

.version-list::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}

.version-item {
  margin-bottom: 30px;
  position: relative;
}

.version-item::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 4px;
  width: 16px;
  height: 16px;
  background: white;
  border: 3px solid var(--primary);
  border-radius: 50%;
}

.version-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.version-number {
  font-weight: 700;
  color: var(--text-dark);
}

.version-tag {
  display: inline-block;
  padding: 4px 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.version-date {
  font-size: 12px;
  color: var(--text-light);
}

.version-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========== Article Section ========== */
.article-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #312e81 100%);
  color: white;
  padding: 60px 0;
  margin-bottom: 60px;
}

.article-hero h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
}

.article-hero p {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 20px;
}

.keyword-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.keyword {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
}

.article-body {
  line-height: 1.8;
}

.article-body h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 40px 0 20px;
  color: var(--text-dark);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 30px 0 16px;
  color: var(--text-dark);
}

.article-body p {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.article-body ul,
.article-body ol {
  margin: 20px 0 20px 20px;
  font-size: 15px;
  color: var(--text-light);
}

.article-body li {
  margin-bottom: 10px;
  line-height: 1.6;
}

.inline-cta {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
  border-left: 4px solid var(--primary);
  padding: 20px;
  border-radius: 8px;
  margin: 30px 0;
}

.inline-cta-title {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.inline-cta-desc {
  font-size: 14px;
  color: var(--text-light);
}

.sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.sidebar-box {
  background: white;
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-box-title {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 16px;
  color: var(--text-dark);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-light);
}

.sidebar-links {
  list-style: none;
}

.sidebar-links li {
  margin-bottom: 10px;
}

.sidebar-links a {
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.3s ease;
}

.sidebar-links a:hover {
  color: var(--secondary);
  padding-left: 4px;
}

.sidebar-stats {
  list-style: none;
}

.sidebar-stat {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 13px;
}

.sidebar-stat:last-child {
  border-bottom: none;
}

.sidebar-stat-label {
  color: var(--text-light);
}

.sidebar-stat-value {
  font-weight: 700;
  color: var(--primary);
}

.sidebar-security {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(37, 99, 235, 0.1));
  border-left: 4px solid var(--success);
  padding: 16px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-light);
}

/* ========== Footer ========== */
.site-footer {
  background: #1f2937;
  color: white;
  padding: 40px 0;
  margin-top: 80px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-brand svg {
  width: 24px;
  height: 24px;
}

.footer-text {
  font-size: 13px;
  color: #d1d5db;
  line-height: 1.6;
}

.footer-security {
  background: rgba(16, 185, 129, 0.1);
  border-left: 3px solid var(--success);
  padding: 16px;
  border-radius: 6px;
  font-size: 13px;
  color: #d1d5db;
  margin: 20px 0;
}

.footer-divider {
  border-top: 1px solid #374151;
  padding-top: 20px;
  text-align: center;
  font-size: 12px;
  color: #9ca3af;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-text h1 {
    font-size: 36px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .section-title {
    font-size: 32px;
  }

  .deep-section {
    grid-template-columns: 1fr;
  }

  .deep-section.reverse {
    direction: ltr;
  }

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

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

  .sidebar {
    position: static;
  }

  .features-grid,
  .platforms-grid,
  .reviews-grid,
  .requirements-grid {
    grid-template-columns: 1fr;
  }

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

  .cta-buttons {
    flex-direction: column;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  .comparison-table {
    font-size: 12px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 12px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 50px 0;
  }

  .hero {
    padding: 80px 0;
  }

  .hero-text h1 {
    font-size: 28px;
  }

  .section-title {
    font-size: 24px;
  }

  .nav-container {
    height: 60px;
  }

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

  .guide-grid {
    gap: 20px;
  }

  .download-header {
    flex-direction: column;
    text-align: center;
  }

  .download-icon {
    margin: 0 auto;
  }
}