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

:root {
  --primary: #E60012;
  --primary-dark: #C4000F;
  --primary-light: #FF6B6B;
  --secondary: #1A1A2E;
  --text: #333333;
  --text-light: #666666;
  --text-lighter: #999999;
  --bg: #FFFFFF;
  --bg-light: #F8F9FA;
  --bg-dark: #F0F2F5;
  --border: #E5E7EB;
  --border-light: #F3F4F6;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --max-width: 1200px;
  --header-height: 64px;
  --transition: all 0.3s ease;
}

html { scroll-behavior: smooth; }

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

/* Header & Nav */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--secondary);
  text-decoration: none;
}

.nav-brand svg { width: 32px; height: 32px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}

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

.nav-links a.active {
  background: var(--primary);
  color: #fff;
}

.nav-links a.active:hover {
  background: var(--primary-dark);
  color: #fff;
}

.nav-links svg { width: 18px; height: 18px; }

/* Mobile menu */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(230,0,18,0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(230,0,18,0.4);
}

.btn-primary:active { transform: translateY(0); }

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--bg-light);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-dark);
  border-color: var(--text-lighter);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 18px;
  border-radius: var(--radius);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

/* Sections */
section {
  padding: 80px 24px;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-header p {
  font-size: 18px;
  color: var(--text-light);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Hero */
.hero {
  padding-top: calc(var(--header-height) + 80px);
  padding-bottom: 100px;
  background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(230,0,18,0.15) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
  animation: float 10s ease-in-out infinite reverse;
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
  font-size: 14px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero h1 span { color: var(--primary-light); }

.hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
  line-height: 1.7;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

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

.hero-stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-light);
}

.hero-stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual-inner {
  width: 100%;
  max-width: 500px;
  aspect-ratio: 4/3;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  backdrop-filter: blur(10px);
  padding: 40px;
}

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

.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}

.card-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card-icon svg { width: 28px; height: 28px; color: #fff; }

.card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 12px;
}

.card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

/* Platform cards */
.platform-card {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  transition: var(--transition);
}

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

.platform-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--bg-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-icon svg { width: 32px; height: 32px; color: var(--primary); }

.platform-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.platform-card .version {
  font-size: 14px;
  color: var(--text-lighter);
  margin-bottom: 16px;
}

.platform-card .desc {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 24px;
  line-height: 1.6;
}

/* Feature detail */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.feature-row:last-child { margin-bottom: 0; }

.feature-row.reverse { direction: rtl; }

.feature-row.reverse > * { direction: ltr; }

.feature-visual {
  background: linear-gradient(135deg, var(--bg-light), var(--bg-dark));
  border-radius: var(--radius);
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.feature-visual svg { width: 80%; height: 80%; }

.feature-content h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
}

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

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text);
}

.feature-list svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

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

.review-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
}

.review-card:hover {
  box-shadow: var(--shadow);
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.review-stars svg {
  width: 20px;
  height: 20px;
  color: #FFB800;
}

.review-text {
  font-size: 16px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 16px;
}

.review-author-info h4 {
  font-size: 15px;
  font-weight: 600;
}

.review-author-info span {
  font-size: 13px;
  color: var(--text-lighter);
}

/* Stats section */
.stats-bar {
  background: linear-gradient(135deg, var(--secondary), #2D2D44);
  color: #fff;
  padding: 60px 24px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  max-width: var(--max-width);
  margin: 0 auto;
}

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

.stat-item .number {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item .label {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-top: 8px;
}

/* Comparison table */
.compare-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.compare-table th {
  background: var(--bg-light);
  padding: 16px 24px;
  text-align: left;
  font-weight: 600;
  color: var(--secondary);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

.compare-table td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
}

.compare-table tr:hover td {
  background: var(--bg-light);
}

.compare-table .check {
  color: #10B981;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.compare-table .cross {
  color: var(--text-lighter);
  display: flex;
  align-items: center;
  gap: 6px;
}

.compare-table .highlight {
  background: linear-gradient(135deg, rgba(230,0,18,0.05), rgba(230,0,18,0.02));
}

.compare-table svg { width: 18px; height: 18px; flex-shrink: 0; }

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

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

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(230,0,18,0.08);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--secondary);
  text-align: left;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--text-lighter);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
  color: var(--primary);
}

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

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
}

.faq-answer-inner p { margin-bottom: 12px; }
.faq-answer-inner p:last-child { margin-bottom: 0; }

/* Download page specific */
.download-hero {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
  background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
  color: #fff;
}

.download-main {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.download-info h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.download-info .subtitle {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
  line-height: 1.6;
}

.download-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}

.download-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}

.download-meta-item svg { width: 18px; height: 18px; }

.download-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.download-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(255,255,255,0.1);
  border-radius: 100px;
  font-size: 13px;
  color: rgba(255,255,255,0.8);
}

/* Install guide */
.guide-steps {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.guide-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  align-items: start;
}

.step-num {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

/* Version log */
.version-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.version-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  transition: var(--transition);
}

.version-item:hover {
  border-color: var(--primary);
  background: var(--bg-light);
}

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

.version-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: var(--primary);
  color: #fff;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
}

.version-date {
  font-size: 14px;
  color: var(--text-lighter);
}

.version-item ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.version-item li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.6;
}

.version-item li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  margin-top: 8px;
  flex-shrink: 0;
}

/* System requirements */
.req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.req-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.req-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.req-card h4 svg { width: 22px; height: 22px; color: var(--primary); }

.req-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.req-card li {
  font-size: 14px;
  color: var(--text-light);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}

.req-card li strong {
  color: var(--text);
  font-weight: 600;
}

/* Security notice */
.security-box {
  max-width: 800px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(16,185,129,0.08), rgba(16,185,129,0.02));
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.security-icon {
  width: 56px;
  height: 56px;
  background: rgba(16,185,129,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.security-icon svg { width: 28px; height: 28px; color: #10B981; }

.security-content h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 8px;
}

.security-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

/* SEO page */
.seo-hero {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 60px;
  background: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
  color: #fff;
}

.seo-hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.seo-hero h1 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 16px;
}

.seo-hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  max-width: 700px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.article-section {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}

.article-section h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 20px;
  margin-top: 40px;
}

.article-section h2:first-child { margin-top: 0; }

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

.article-section ul {
  margin-left: 24px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-section li {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
}

.article-section strong {
  color: var(--text);
  font-weight: 600;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
  color: #fff;
  margin: 40px 0;
}

.cta-banner h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-banner p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-secondary {
  background: #fff;
  color: var(--primary);
  border: none;
  font-weight: 700;
}

.cta-banner .btn-secondary:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
}

/* Footer */
.footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.6);
  padding: 40px 24px;
  text-align: center;
  font-size: 14px;
  line-height: 1.8;
}

.footer p { margin-bottom: 8px; }

.footer a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
}

.footer a:hover { color: #fff; }

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

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -20px); }
}

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

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Breadcrumb */
.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  font-size: 14px;
  color: var(--text-lighter);
}

.breadcrumb a {
  color: var(--text-light);
  text-decoration: none;
}

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

/* Responsive */
@media (max-width: 968px) {
  .hero-content,
  .download-main,
  .feature-row {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .feature-row.reverse { direction: ltr; }

  .hero h1 { font-size: 36px; }
  .download-info h1 { font-size: 32px; }
  .section-header h2 { font-size: 28px; }

  .hero-stats { gap: 24px; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.active { display: flex; }

  .mobile-toggle { display: block; }

  .guide-step {
    grid-template-columns: 48px 1fr;
    gap: 16px;
  }

  .step-num {
    width: 48px;
    height: 48px;
    font-size: 18px;
  }
}

@media (max-width: 640px) {
  section { padding: 60px 16px; }

  .hero h1 { font-size: 28px; }
  .hero-desc { font-size: 16px; }

  .card-grid,
  .card-grid-4,
  .review-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-item .number { font-size: 32px; }

  .btn-lg { padding: 14px 28px; font-size: 16px; }

  .security-box { flex-direction: column; align-items: center; text-align: center; }

  .cta-banner { padding: 32px 20px; }
  .cta-banner h3 { font-size: 22px; }
}