/* ========== CSS Variables ========== */
:root {
  --primary: #e84a33;
  --primary-dark: #c73b26;
  --primary-light: #fff0ed;
  --accent: #ff7a5c;
  --dark: #1a1a2e;
  --dark-secondary: #16213e;
  --text: #333344;
  --text-light: #666677;
  --text-muted: #9999aa;
  --bg: #ffffff;
  --bg-secondary: #f8f9fc;
  --bg-card: #ffffff;
  --border: #e8e8f0;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

/* ========== Utility ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-title p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 560px;
  margin: 0 auto;
}

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

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

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.animate-fadeInUp {
  animation: fadeInUp 0.7s ease forwards;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* ========== Navigation ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dark);
}

.logo svg {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  position: relative;
}

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

.nav-links a.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

/* ========== Hero Section ========== */
.hero {
  position: relative;
  padding: 140px 0 100px;
  background: linear-gradient(135deg, #fff8f6 0%, #ffffff 50%, #f0f4ff 100%);
  overflow: hidden;
}

.hero-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(circle at 20% 30%, rgba(232,74,51,0.06) 0%, transparent 50%),
                    radial-gradient(circle at 80% 70%, rgba(100,120,255,0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero-content h1 span {
  color: var(--primary);
  position: relative;
}

.hero-content .subtitle {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-badges {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 500;
}

.badge svg {
  width: 16px;
  height: 16px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 16px rgba(232,74,51,0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,74,51,0.35);
}

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

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

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

.btn-large {
  padding: 16px 40px;
  font-size: 1.1rem;
  border-radius: var(--radius-lg);
}

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

.hero-visual .app-mockup {
  width: 100%;
  max-width: 500px;
  aspect-ratio: 16/10;
  background: linear-gradient(145deg, #ffffff 0%, #f5f7fa 100%);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,0,0,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.app-mockup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 36px;
  background: linear-gradient(to right, #e8e8f0, #ddddee);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.mockup-dots {
  position: absolute;
  top: 12px;
  left: 16px;
  display: flex;
  gap: 6px;
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff5f57;
}

.mockup-dot:nth-child(2) { background: #febc2e; }
.mockup-dot:nth-child(3) { background: #28c840; }

.mockup-content {
  display: flex;
  gap: 16px;
  padding: 20px;
  margin-top: 20px;
}

.mockup-sidebar {
  width: 80px;
  height: 200px;
  background: #f0f2f5;
  border-radius: var(--radius-sm);
}

.mockup-main {
  flex: 1;
  height: 200px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.mockup-line {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  margin-bottom: 10px;
}

.mockup-line.short { width: 60%; }

/* ========== Features Section ========== */
.features {
  background: var(--bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 26px;
  height: 26px;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========== Download Section / Cards ========== */
.download-section {
  background: var(--bg-secondary);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.download-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}

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

.download-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 4px 20px rgba(232,74,51,0.1);
}

.download-card.featured::before {
  content: '推荐';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.platform-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: var(--radius);
}

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

.download-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}

.download-card .version {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.download-card .btn {
  width: 100%;
  padding: 12px 20px;
  font-size: 0.95rem;
}

.download-card .btn svg {
  width: 18px;
  height: 18px;
}

/* ========== Reviews Section ========== */
.reviews {
  background: var(--bg);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

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

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
}

.review-stars svg {
  width: 18px;
  height: 18px;
  color: #f5a623;
  fill: #f5a623;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1rem;
}

.review-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
}

.review-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ========== FAQ Section ========== */
.faq {
  background: var(--bg-secondary);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--dark);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  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 0.35s ease, padding 0.35s ease;
}

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

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.7;
}

.faq-answer-inner a {
  color: var(--primary);
  text-decoration: underline;
}

/* ========== Comparison Table ========== */
.comparison {
  background: var(--bg);
}

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

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.compare-table th,
.compare-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.compare-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--dark);
  font-size: 0.95rem;
}

.compare-table td {
  font-size: 0.95rem;
  color: var(--text);
}

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

.compare-table .check svg {
  width: 20px;
  height: 20px;
  color: #34c759;
}

.compare-table .cross svg {
  width: 20px;
  height: 20px;
  color: #ff3b30;
}

.compare-table .neutral svg {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
}

.compare-table .highlight-col {
  background: var(--primary-light);
}

/* ========== Tips / Article Section ========== */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tip-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

.tip-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.tip-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 14px;
}

.tip-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
}

.tip-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========== CTA Section ========== */
.cta-section {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-secondary) 100%);
  color: white;
  text-align: center;
  padding: 80px 24px;
}

.cta-section h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  max-width: 520px;
  margin: 0 auto 32px;
}

.cta-section .btn-primary {
  background: var(--primary);
  color: white;
  font-size: 1.1rem;
  padding: 16px 40px;
}

.cta-section .btn-primary:hover {
  background: var(--accent);
  box-shadow: 0 8px 32px rgba(232,74,51,0.4);
}

/* ========== SEO Content Section ========== */
.seo-content {
  background: var(--bg);
}

.seo-content .container {
  max-width: 800px;
}

.seo-content article {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}

.seo-content article h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  margin: 36px 0 16px;
}

.seo-content article h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--dark);
  margin: 24px 0 12px;
}

.seo-content article p {
  margin-bottom: 14px;
  color: var(--text-light);
}

.seo-content article ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
  color: var(--text-light);
}

.seo-content article li {
  margin-bottom: 8px;
}

.seo-content article strong {
  color: var(--dark);
}

.keyword-highlight {
  background: linear-gradient(transparent 60%, rgba(232,74,51,0.15) 60%);
  padding: 0 2px;
  font-weight: 600;
  color: var(--dark);
}

/* ========== Changelog ========== */
.changelog {
  background: var(--bg-secondary);
}

.changelog-list {
  max-width: 700px;
  margin: 0 auto;
}

.changelog-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.changelog-item:last-child {
  border-bottom: none;
}

.changelog-version {
  flex-shrink: 0;
  width: 80px;
  text-align: right;
}

.changelog-version .ver-tag {
  display: inline-block;
  background: var(--primary);
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
}

.changelog-version .ver-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.changelog-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}

.changelog-content p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========== Windows Focus Section ========== */
.windows-focus {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg) 100%);
}

.windows-card-large {
  background: var(--bg-card);
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  box-shadow: 0 4px 24px rgba(232,74,51,0.08);
}

.windows-info h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.windows-info .windows-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.windows-meta span {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.windows-meta span svg {
  width: 16px;
  height: 16px;
}

.windows-info p {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 28px;
}

.windows-specs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

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

.spec-value {
  color: var(--dark);
  font-weight: 500;
}

.windows-download-area {
  text-align: center;
}

.windows-icon-large {
  width: 100px;
  height: 100px;
  margin: 0 auto 24px;
  background: var(--primary-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.windows-icon-large svg {
  width: 50px;
  height: 50px;
  color: var(--primary);
}

/* ========== Footer ========== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.footer p {
  font-size: 0.85rem;
  line-height: 1.8;
}

.footer .footer-brand {
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  margin-bottom: 8px;
  font-size: 1rem;
}

/* ========== Breadcrumbs ========== */
.breadcrumbs {
  background: var(--bg-secondary);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.breadcrumbs-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumbs-inner a {
  color: var(--text-light);
}

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

.breadcrumbs-inner svg {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
}

/* ========== Scroll Top Button ========== */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.scroll-top svg {
  width: 20px;
  height: 20px;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-badges {
    justify-content: center;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .windows-card-large {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .download-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .navbar-inner {
    height: 60px;
  }
  
  .nav-links a {
    padding: 6px 12px;
    font-size: 0.85rem;
  }
  
  .hero {
    padding: 120px 0 60px;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .section-title h2 {
    font-size: 1.75rem;
  }
  
  .section-padding {
    padding: 60px 0;
  }
  
  .features-grid,
  .reviews-grid,
  .download-grid,
  .tips-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-section h2 {
    font-size: 1.75rem;
  }
  
  .windows-card-large {
    padding: 28px;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.6rem;
  }
  
  .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
  }
  
  .feature-card,
  .review-card,
  .tip-card {
    padding: 24px 20px;
  }
}

/* ========== SEO Helpers ========== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}