/* Cloud Harmony Theme - WPS Office Landing Site */

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

:root {
  --primary: #1e88e5;
  --primary-dark: #1565c0;
  --secondary: #26a69a;
  --accent: #ff6b35;
  --light-bg: #f5f7fa;
  --surface: #ffffff;
  --text-dark: #1a1a1a;
  --text-light: #666666;
  --border: #e0e0e0;
}

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(--light-bg);
  line-height: 1.6;
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  color: var(--primary);
  text-decoration: none;
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  margin: 0 40px;
}

.nav-link {
  padding: 8px 14px;
  color: var(--text-light);
  text-decoration: none;
  font-size: 14px;
  border-radius: 6px;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--primary);
  background-color: rgba(30, 136, 229, 0.08);
}

.nav-link.active {
  color: var(--primary);
  background-color: rgba(30, 136, 229, 0.12);
  font-weight: 600;
}

.nav-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-dark);
}

.nav-mobile {
  display: none;
}

.nav-mobile.show {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.nav-mobile .nav-link {
  padding: 12px 20px;
  border-radius: 0;
  display: block;
}

/* Buttons */
.btn {
  padding: 10px 24px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(30, 136, 229, 0.3);
}

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

.btn-secondary:hover {
  background-color: #1f8a7f;
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background-color: rgba(30, 136, 229, 0.08);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Sections */
.section {
  padding: 80px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

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

.section-dark {
  background: linear-gradient(135deg, #1565c0 0%, #0d47a1 100%);
  color: white;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.section-dark .section-title {
  color: white;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 48px;
  max-width: 600px;
}

.section-dark .section-subtitle {
  color: rgba(255, 255, 255, 0.9);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #ffffff 0%, #f5f7fa 100%);
  padding: 100px 20px;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(38, 166, 154, 0.1);
  color: var(--secondary);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
  color: var(--text-dark);
}

.hero-desc {
  font-size: 18px;
  color: var(--text-light);
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
  margin: 48px 0;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.stat-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

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

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.feature-card {
  background: white;
  padding: 32px 24px;
  border-radius: 12px;
  border-left: 4px solid var(--primary);
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.feature-card:nth-child(2) {
  border-left-color: var(--secondary);
}

.feature-card:nth-child(3) {
  border-left-color: #ff6b35;
}

.feature-card:nth-child(4) {
  border-left-color: #7c3aed;
}

.feature-card:nth-child(5) {
  border-left-color: #ec4899;
}

.feature-card:nth-child(6) {
  border-left-color: #f59e0b;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.feature-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  color: var(--primary);
}

.feature-card:nth-child(2) .feature-icon {
  color: var(--secondary);
}

.feature-card:nth-child(3) .feature-icon {
  color: #ff6b35;
}

.feature-card:nth-child(4) .feature-icon {
  color: #7c3aed;
}

.feature-card:nth-child(5) .feature-icon {
  color: #ec4899;
}

.feature-card:nth-child(6) .feature-icon {
  color: #f59e0b;
}

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

.feature-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* Deep Feature Sections */
.deep-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 80px;
}

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

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

.deep-content h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  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-top: 20px;
}

.deep-list li {
  padding: 10px 0;
  padding-left: 28px;
  position: relative;
  font-size: 14px;
  color: var(--text-light);
}

.deep-list li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: 700;
  font-size: 16px;
}

.deep-visual {
  background: linear-gradient(135deg, rgba(30, 136, 229, 0.1) 0%, rgba(38, 166, 154, 0.1) 100%);
  border-radius: 12px;
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

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

/* Platform Cards */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.platform-card {
  background: white;
  padding: 32px 24px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
}

.platform-card.featured {
  border: 2px solid var(--primary);
  transform: scale(1.05);
}

.platform-card:hover {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.platform-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  color: var(--primary);
}

.platform-card:nth-child(2) .platform-icon {
  color: var(--secondary);
}

.platform-card:nth-child(3) .platform-icon {
  color: #ff6b35;
}

.platform-card:nth-child(4) .platform-icon {
  color: #7c3aed;
}

.platform-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.platform-version {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.platform-req {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.6;
}

.platform-badge {
  display: inline-block;
  background-color: rgba(30, 136, 229, 0.1);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 16px;
}

/* Review Cards */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.review-card {
  background: white;
  padding: 28px 24px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.review-stars {
  color: #fbbf24;
  font-size: 14px;
  margin-bottom: 12px;
}

.review-text {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.8;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  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, #1e88e5, #1565c0); }
.review-avatar.av2 { background: linear-gradient(135deg, #26a69a, #00897b); }
.review-avatar.av3 { background: linear-gradient(135deg, #ff6b35, #ff5722); }
.review-avatar.av4 { background: linear-gradient(135deg, #7c3aed, #6d28d9); }
.review-avatar.av5 { background: linear-gradient(135deg, #ec4899, #db2777); }
.review-avatar.av6 { background: linear-gradient(135deg, #f59e0b, #d97706); }

.review-info {
  flex: 1;
}

.review-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 2px;
}

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

/* Security Section */
.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.security-item {
  background: white;
  padding: 28px 24px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.security-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--primary);
}

.security-item:nth-child(2) .security-icon {
  color: var(--secondary);
}

.security-item:nth-child(3) .security-icon {
  color: #ff6b35;
}

.security-item:nth-child(4) .security-icon {
  color: #7c3aed;
}

.security-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.security-desc {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* Comparison Table */
.comparison-wrap {
  overflow-x: auto;
  margin-top: 32px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.comparison-table th {
  background-color: var(--light-bg);
  padding: 16px;
  text-align: left;
  font-weight: 700;
  color: var(--text-dark);
  border-bottom: 2px solid var(--border);
}

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

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

.comparison-table .yes {
  color: var(--secondary);
  font-weight: 600;
}

.comparison-table .no {
  color: #999;
}

/* Version Cards */
.version-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.version-card {
  background: white;
  padding: 32px 24px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
  position: relative;
}

.version-card.featured {
  border: 2px solid var(--primary);
  transform: scale(1.05);
}

.version-card:hover {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
}

.version-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background-color: var(--accent);
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}

.version-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.version-price {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.version-period {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 20px;
}

.version-features {
  list-style: none;
  margin-bottom: 24px;
}

.version-features li {
  padding: 10px 0;
  padding-left: 24px;
  position: relative;
  font-size: 14px;
  color: var(--text-light);
}

.version-features li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: 700;
}

/* FAQ Section */
.faq-list {
  list-style: none;
  margin-top: 32px;
}

.faq-item {
  background: white;
  margin-bottom: 12px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-dark);
  user-select: none;
  transition: all 0.3s ease;
}

.faq-question:hover {
  background-color: var(--light-bg);
}

.faq-chevron {
  width: 20px;
  height: 20px;
  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: 0 24px 20px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 60px 20px;
  text-align: center;
  border-radius: 12px;
  margin: 80px 0;
}

.cta-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 16px;
  margin-bottom: 32px;
  opacity: 0.95;
}

/* Footer */
.footer {
  background-color: var(--text-dark);
  color: white;
  padding: 40px 20px;
  text-align: center;
  font-size: 13px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-note {
  margin-bottom: 12px;
  line-height: 1.6;
}

.footer-security {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 12px;
}

/* Download Page Specific */
.dl-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 80px 20px;
  text-align: center;
}

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

.dl-hero-desc {
  font-size: 18px;
  margin-bottom: 32px;
  opacity: 0.95;
}

.dl-main-card {
  background: white;
  color: var(--text-dark);
  padding: 40px;
  border-radius: 12px;
  max-width: 600px;
  margin: -60px auto 0;
  position: relative;
  z-index: 10;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.dl-card-top {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 20px;
  margin: -40px -40px 24px;
  border-radius: 12px 12px 0 0;
  text-align: center;
}

.dl-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
}

.dl-card-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.dl-card-meta {
  font-size: 13px;
  opacity: 0.9;
}

.dl-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.dl-spec {
  text-align: center;
  padding: 16px;
  background-color: var(--light-bg);
  border-radius: 8px;
}

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

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

.dl-security-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: rgba(38, 166, 154, 0.1);
  color: var(--secondary);
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 24px;
  font-size: 13px;
}

.dl-security-badge svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.dl-buttons {
  display: flex;
  gap: 12px;
  flex-direction: column;
}

.dl-buttons .btn {
  width: 100%;
  justify-content: center;
}

/* Install Guide */
.guide-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 48px;
}

.guide-col-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-dark);
}

.guide-col-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--primary);
}

.guide-col-title.macOS .guide-col-dot {
  background-color: var(--secondary);
}

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

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

.guide-step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.guide-col-title.macOS .guide-step-num {
  background-color: var(--secondary);
}

.guide-step-body {
  flex: 1;
}

.guide-step-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-dark);
}

.guide-step-desc {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* System Requirements */
.req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.req-card {
  background: white;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.req-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
  color: var(--primary);
}

.req-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.req-items {
  list-style: none;
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.8;
}

.req-items li:before {
  content: "• ";
  color: var(--primary);
  font-weight: 700;
  margin-right: 6px;
}

/* Version Timeline */
.version-list {
  list-style: none;
  margin-top: 32px;
}

.version-item {
  background: white;
  padding: 24px;
  margin-bottom: 16px;
  border-radius: 8px;
  border-left: 4px solid var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.version-item:nth-child(2) {
  border-left-color: var(--secondary);
}

.version-item:nth-child(3) {
  border-left-color: #ff6b35;
}

.version-item:nth-child(4) {
  border-left-color: #7c3aed;
}

.version-item:nth-child(5) {
  border-left-color: #f59e0b;
}

.version-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

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

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

.version-desc {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* Article Page */
.article-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 60px 20px;
  text-align: center;
}

.article-hero-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
}

.article-hero-desc {
  font-size: 16px;
  margin-bottom: 24px;
  opacity: 0.95;
}

.keyword-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

.keyword {
  background-color: rgba(255, 255, 255, 0.2);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

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

.article-body {
  max-width: 800px;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text-dark);
}

.article-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--text-dark);
}

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

.article-body ul {
  margin: 16px 0 16px 24px;
  font-size: 14px;
  color: var(--text-light);
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.inline-cta {
  background-color: rgba(30, 136, 229, 0.1);
  border-left: 4px solid var(--primary);
  padding: 20px;
  border-radius: 8px;
  margin: 32px 0;
}

.inline-cta-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.inline-cta-desc {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 12px;
}

.inline-cta .btn {
  display: inline-block;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: 80px;
  height: fit-content;
}

.sidebar-box {
  background: white;
  padding: 24px;
  border-radius: 12px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

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

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

.sidebar-links li {
  margin-bottom: 12px;
}

.sidebar-links a {
  color: var(--primary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s ease;
}

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

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

.sidebar-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

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

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

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

/* Responsive */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    margin: 0;
  }

  .nav-toggle {
    display: block;
  }

  .nav-toggle.active ~ .nav-mobile {
    display: flex;
  }

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

  .section-title {
    font-size: 28px;
  }

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

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

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

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

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

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

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

  .sidebar {
    position: static;
    top: auto;
  }

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

  .version-card.featured {
    transform: scale(1);
  }

  .dl-main-card {
    margin-top: -40px;
  }

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

  .dl-specs {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .nav-inner {
    padding: 0 12px;
  }

  .nav-menu {
    margin: 0 20px;
  }

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

  .section {
    padding: 60px 16px;
  }

  .section-title {
    font-size: 22px;
  }

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

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

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-grid {
    gap: 16px;
  }

  .feature-card {
    padding: 20px 16px;
  }

  .deep-section {
    gap: 24px;
  }

  .dl-hero-title {
    font-size: 28px;
  }

  .dl-main-card {
    padding: 24px;
  }

  .dl-card-top {
    margin: -24px -24px 16px;
  }

  .dl-specs {
    gap: 12px;
  }

  .guide-grid {
    gap: 24px;
  }

  .guide-step {
    gap: 12px;
  }

  .version-card.featured {
    transform: scale(1);
  }
}