/* ==========================================================================
   青云梯机场 (Qingyunti Airport) - 全局淡青色平滑 CSS 样式库
   Theme: Light Cyan & Mint Soft Gradient | Smooth Glassmorphism | Clean Tech
   ========================================================================== */

:root {
  --primary: #0d9488;
  --primary-hover: #0f766e;
  --primary-light: #14b8a6;
  --primary-soft: #f0fdfa;
  --primary-border: rgba(13, 148, 136, 0.18);
  --accent: #2563eb;
  --accent-mint: #5eead4;
  --grad-primary: linear-gradient(135deg, #0d9488 0%, #0284c7 100%);
  --grad-soft: linear-gradient(135deg, #f0fdfa 0%, #e0f2fe 100%);
  --grad-card: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  
  --text-main: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  --bg-body: #f4fbf8;
  --bg-card: #ffffff;
  --bg-alt: #eef7f4;
  
  --border-color: #e2e8f0;
  --border-light: rgba(13, 148, 136, 0.12);
  
  --shadow-sm: 0 2px 8px rgba(13, 148, 136, 0.04);
  --shadow-md: 0 10px 30px -5px rgba(13, 148, 136, 0.08), 0 4px 12px -2px rgba(13, 148, 136, 0.04);
  --shadow-lg: 0 20px 40px -10px rgba(13, 148, 136, 0.15), 0 8px 20px -4px rgba(13, 148, 136, 0.08);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --container-max: 1200px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-body);
  background-color: var(--bg-body);
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

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

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

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

ul, ol {
  list-style: none;
}

button, input, select {
  font: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 2;
}

/* Floating Bouncing Cyan Clouds Dynamic Animation */
.cloud-bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.floating-cloud {
  position: absolute;
  opacity: 0.28;
  filter: drop-shadow(0 12px 24px rgba(13, 148, 136, 0.15));
  animation: cloudBounce 10s ease-in-out infinite alternate;
}

.cloud-1 {
  top: 8%;
  left: 4%;
  width: 160px;
  animation-duration: 9s;
}

.cloud-2 {
  top: 25%;
  right: 5%;
  width: 210px;
  animation-duration: 12s;
  animation-delay: -3s;
}

.cloud-3 {
  top: 55%;
  left: 2%;
  width: 180px;
  animation-duration: 11s;
  animation-delay: -5s;
}

.cloud-4 {
  top: 75%;
  right: 3%;
  width: 170px;
  animation-duration: 10s;
  animation-delay: -2s;
}

@keyframes cloudBounce {
  0% {
    transform: translateY(0px) translateX(0px) scale(1) rotate(0deg);
  }
  50% {
    transform: translateY(-26px) translateX(18px) scale(1.08) rotate(2deg);
  }
  100% {
    transform: translateY(16px) translateX(-14px) scale(0.95) rotate(-2deg);
  }
}

/* Header & Navbar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(244, 251, 248, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.brand-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--grad-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-body);
  padding: 6px 0;
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons & Badges */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(13, 148, 136, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13, 148, 136, 0.4);
  color: #ffffff;
}

.btn-secondary {
  background: #ffffff;
  color: var(--primary-hover);
  border: 1px solid var(--primary-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--primary-soft);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 15px 34px;
  font-size: 1.02rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--primary-soft);
  color: var(--primary-hover);
  border: 1px solid var(--primary-border);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-main);
  cursor: pointer;
}

/* Streamlined Hero Section (首屏极简样式) */
.hero-section {
  padding: 60px 0 50px;
  position: relative;
  text-align: center;
}

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

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  margin: 16px 0 20px;
  letter-spacing: -0.8px;
}

.hero-title .highlight {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 30px;
  background: #ffffff;
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
}

.stat-item {
  text-align: center;
  padding: 6px;
}

.stat-num {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  margin-bottom: 4px;
}

.stat-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Section Header Component */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 46px;
}

.section-header h2 {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 10px 0;
  letter-spacing: -0.5px;
}

.section-header p {
  font-size: 1.02rem;
  color: var(--text-muted);
}

/* Feature Cards Section */
.features-section {
  padding: 70px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.feature-card {
  background: var(--bg-card);
  padding: 32px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(13, 148, 136, 0.3);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* Pricing Section */
.pricing-section {
  padding: 70px 0;
  background: var(--bg-alt);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
}

.price-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.price-card.popular {
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--grad-primary);
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.price-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.price-header p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.price-amount {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
  margin-bottom: 22px;
}

.price-amount span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

.price-features {
  margin-bottom: 28px;
  flex-grow: 1;
}

.price-features li {
  padding: 9px 0;
  font-size: 0.92rem;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px dashed #f1f5f9;
}

.price-features li svg {
  color: var(--primary);
  flex-shrink: 0;
}

/* User Audience Section */
.audience-section {
  padding: 70px 0;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.audience-card {
  background: #ffffff;
  padding: 26px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.audience-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.audience-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.audience-card p {
  font-size: 0.86rem;
  color: var(--text-muted);
}

/* Tutorials & Tabs Section */
.tutorial-section {
  padding: 70px 0;
  background: var(--bg-alt);
}

.tabs-wrapper {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 28px;
  box-shadow: var(--shadow-md);
}

.tabs-nav {
  display: flex;
  gap: 12px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 12px;
  margin-bottom: 26px;
  overflow-x: auto;
}

.tab-btn {
  padding: 9px 22px;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--primary);
  background: var(--primary-soft);
}

.tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
}

.tab-content {
  display: none;
}

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

.step-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.step-item {
  display: flex;
  gap: 16px;
  background: var(--bg-body);
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.step-num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--grad-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.step-body h4 {
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 4px;
}

.step-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.step-code {
  background: #f0fdfa;
  border: 1px solid var(--primary-border);
  color: var(--primary-hover);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Testimonials Section */
.testimonials-section {
  padding: 70px 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.testimonial-card {
  background: #ffffff;
  padding: 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.rating-stars {
  color: #f59e0b;
  margin-bottom: 12px;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 18px;
  font-style: italic;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-details h5 {
  font-size: 0.92rem;
  color: var(--text-main);
}

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

/* FAQ Accordion Section */
.faq-section {
  padding: 70px 0;
  background: var(--bg-alt);
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.faq-header {
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-main);
}

.faq-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #ffffff;
}

.faq-body {
  padding: 0 22px 18px;
  display: none;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-item.active .faq-body {
  display: block;
}

/* Article Feed Section */
.articles-section {
  padding: 70px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.article-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-hover);
}

.article-meta {
  padding: 22px 22px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-tag {
  background: var(--primary-soft);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.article-content {
  padding: 0 22px 22px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.article-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  line-height: 1.6;
  flex-grow: 1;
}

.article-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* SEO Article Page View */
.article-page {
  padding: 50px 0 70px;
}

.article-header-box {
  margin-bottom: 36px;
  text-align: center;
  max-width: 840px;
  margin: 0 auto 36px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.article-h1 {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 18px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 310px;
  gap: 36px;
}

.article-main {
  background: #ffffff;
  padding: 36px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-body);
}

.article-main h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 32px 0 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-soft);
}

.article-main h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 22px 0 10px;
}

.article-main p {
  margin-bottom: 18px;
}

.article-main ul, .article-main ol {
  margin-bottom: 18px;
  padding-left: 22px;
}

.article-main ul {
  list-style-type: disc;
}

.article-main ol {
  list-style-type: decimal;
}

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

.article-main blockquote {
  background: var(--primary-soft);
  border-left: 4px solid var(--primary);
  padding: 14px 18px;
  margin: 22px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-main);
  font-style: italic;
}

.cta-box-inline {
  background: var(--grad-soft);
  border: 1px solid var(--primary-border);
  padding: 22px;
  border-radius: var(--radius-md);
  margin: 28px 0;
  text-align: center;
}

.cta-box-inline h4 {
  font-size: 1.15rem;
  color: var(--text-main);
  margin-bottom: 6px;
}

.cta-box-inline p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.sidebar-box {
  background: #ffffff;
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  margin-bottom: 22px;
  position: sticky;
  top: 96px;
}

.sidebar-box h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.88rem;
}

.toc-list a {
  color: var(--text-muted);
}

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

.related-posts {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-post-item {
  font-size: 0.88rem;
  line-height: 1.4;
}

/* Footer Component */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 0 28px;
  margin-top: auto;
  position: relative;
  z-index: 2;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
}

.footer-links a {
  color: #94a3b8;
}

.footer-links a:hover {
  color: var(--accent-mint);
}

.footer-bottom {
  padding-top: 26px;
  border-top: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #64748b;
}

.footer-legal {
  display: flex;
  gap: 18px;
}

.footer-legal a {
  color: #64748b;
}

.footer-legal a:hover {
  color: #94a3b8;
}

/* Toast Notice */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #0f172a;
  color: #ffffff;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  z-index: 2000;
  display: none;
  font-size: 0.9rem;
  border-left: 4px solid var(--primary-light);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.4rem; }
  .features-grid, .pricing-grid, .testimonials-grid, .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-toggle { display: block; }
  .nav-menu {
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: var(--transition);
  }
  .nav-menu.active {
    transform: translateY(0);
  }
  .hero-title { font-size: 1.85rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .features-grid, .pricing-grid, .testimonials-grid, .articles-grid, .audience-grid {
    grid-template-columns: 1fr;
  }
  .price-card.popular {
    transform: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
  .article-main { padding: 20px; }
  .article-h1 { font-size: 1.7rem; }
}