/* 优信云机场 (Youxin Cloud Airport) - 极简科技风样式表 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
  --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-alt: #f1f5f9;
  --bg-badge: #e6f0f3;
  --primary: #3b5a64;
  --primary-hover: #29424a;
  --primary-light: #edf4f6;
  --accent: #1e333a;
  --text-dark: #0f172a;
  --text-muted: #334155;
  --text-light: #64748b;
  --border-color: #cbd5e1;
  --border-light: #e2e8f0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(59, 90, 100, 0.16);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1240px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  font-weight: 400;
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

/* Typography Styles */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--text-dark);
  letter-spacing: -0.02em;
  line-height: 1.3;
}

h1 { font-size: 2.6rem; font-weight: 700; }
h2 { font-size: 2.0rem; font-weight: 600; }
h3 { font-size: 1.35rem; font-weight: 600; }
p { font-weight: 400; color: var(--text-muted); font-size: 1.02rem; }

/* Navigation Bar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  padding: 16px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-dark);
}

.brand-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #3b5a64, #1e333a);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 4px 12px rgba(59, 90, 100, 0.25);
}

.brand-logo span.tag {
  font-size: 0.76rem;
  font-weight: 500;
  background-color: var(--primary-light);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(59, 90, 100, 0.2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 1.0rem;
  font-weight: 500;
  color: var(--text-muted);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-slim {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 26px;
  font-size: 0.96rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-primary {
  background-color: #527883;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(82, 120, 131, 0.3);
}

.btn-primary:hover {
  background-color: #41626c;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(82, 120, 131, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: #527883;
  border: 1.5px solid #527883;
  font-weight: 500;
}

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

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--text-dark);
}

/* Hero Section - 左右结构 Left-Right Split Grid */
.hero-section {
  padding: 65px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-text-col {
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background-color: var(--primary-light);
  border: 1px solid rgba(82, 120, 131, 0.25);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 500;
  color: #3b5a64;
  margin-bottom: 22px;
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-dark);
  margin-bottom: 20px;
  line-height: 1.25;
}

.hero-title span {
  color: #41626c;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: #475569;
  margin-bottom: 32px;
  font-weight: 400;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.hero-features-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 20px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 28px;
}

.strip-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-dark);
}

.strip-item svg {
  color: #527883;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Hero Right Column Image */
.hero-image-col {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-banner-card {
  width: 100%;
  max-width: 540px;
  border-radius: var(--radius-md);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--border-color);
  overflow: hidden;
  background-color: #ffffff;
  transition: var(--transition);
}

.hero-banner-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 44px rgba(59, 90, 100, 0.18);
}

.hero-banner-card img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
}

/* Realtime Node Status Bar */
.node-status-bar {
  margin-top: 10px;
  padding: 20px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.node-card {
  padding: 14px 16px;
  background-color: var(--bg-main);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border-light);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.flag {
  font-size: 1.25rem;
}

.node-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dark);
}

.node-latency {
  font-size: 0.82rem;
  font-weight: 600;
  color: #059669;
  background-color: #d1fae5;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-header .tag {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #527883;
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.section-header p {
  font-size: 1.05rem;
  color: #475569;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(82, 120, 131, 0.4);
}

.feature-icon {
  width: 52px;
  height: 52px;
  background-color: var(--primary-light);
  color: #527883;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.96rem;
  line-height: 1.7;
}

/* Pricing Section - Exact Match to Reference Image */
.pricing-section {
  padding: 80px 0;
  background-color: #f4f7f9;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
  max-width: 1080px;
  margin: 0 auto;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  padding: 40px 32px 32px;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 16px rgba(0,0,0,0.03);
  transition: var(--transition);
}

.pricing-card.popular {
  border: 2px solid #527883;
  box-shadow: 0 10px 32px rgba(82, 120, 131, 0.18);
  transform: translateY(-4px);
}

.pricing-card .popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #8da4ac;
  color: #ffffff;
  font-size: 0.8rem;
  padding: 4px 20px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.pricing-header h3 {
  font-size: 1.45rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 20px;
}

.pricing-price {
  font-size: 2.6rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 24px;
}

.pricing-price span {
  font-size: 1.0rem;
  font-weight: 400;
  color: #64748b;
}

.pricing-features {
  list-style: none;
  margin-bottom: 36px;
  flex-grow: 1;
}

.pricing-features li {
  font-size: 0.96rem;
  color: #334155;
  padding: 11px 0;
  border-bottom: 1px stroke rgba(0,0,0,0.04);
  font-weight: 400;
}

.btn-pricing {
  width: 100%;
  padding: 14px 0;
  background-color: #527883;
  color: #ffffff;
  font-size: 1.0rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: block;
}

.btn-pricing:hover {
  background-color: #41626c;
  box-shadow: 0 4px 14px rgba(82, 120, 131, 0.35);
}

/* Pay-as-you-go & Extra Pricing Options */
.extra-pricing-banner {
  max-width: 1080px;
  margin: 36px auto 0;
  background-color: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  padding: 26px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.extra-pricing-info h4 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.extra-pricing-info p {
  font-size: 0.94rem;
  color: #475569;
}

/* Tutorial Section Preview */
.tutorial-section {
  padding: 80px 0;
}

.tutorial-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 11px 24px;
  border-radius: var(--radius-pill);
  font-size: 0.96rem;
  font-weight: 500;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
  background-color: #527883;
  color: #ffffff;
  border-color: #527883;
}

.tutorial-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

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

.step-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--primary-light);
  color: #527883;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 600;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 0.92rem;
  color: #475569;
}

/* Target Audience */
.audience-section {
  padding: 70px 0;
  background-color: #ffffff;
}

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

.audience-card {
  padding: 26px;
  border-radius: var(--radius-md);
  background-color: var(--bg-main);
  border: 1px solid var(--border-light);
  text-align: center;
}

.audience-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.audience-card h4 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.audience-card p {
  font-size: 0.92rem;
  color: #475569;
}

/* Testimonials / User Reviews */
.reviews-section {
  padding: 80px 0;
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.review-stars {
  color: #f59e0b;
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.review-text {
  font-size: 0.96rem;
  color: var(--text-dark);
  margin-bottom: 20px;
  line-height: 1.7;
}

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

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--primary-light);
  color: #527883;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.author-info h5 {
  font-size: 0.96rem;
  font-weight: 600;
}

.author-info p {
  font-size: 0.82rem;
  color: #64748b;
}

/* FAQ Accordion */
.faq-section {
  padding: 80px 0;
  background-color: #ffffff;
}

.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-dark);
}

.faq-answer {
  padding: 0 24px 20px;
  display: none;
  font-size: 0.96rem;
  color: #334155;
  border-top: 1px solid transparent;
  line-height: 1.75;
}

.faq-item.active {
  background-color: #ffffff;
  border-color: #527883;
  box-shadow: var(--shadow-sm);
}

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

.faq-toggle-icon {
  font-size: 1.2rem;
  transition: transform 0.25s ease;
  color: #527883;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
}

/* Articles Catalog Grid (Homepage & Article Hub) */
.articles-section {
  padding: 80px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(82, 120, 131, 0.4);
}

.article-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 12px;
  font-weight: 500;
}

.article-meta .category {
  background-color: var(--primary-light);
  color: #527883;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
}

.article-title {
  font-size: 1.18rem;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.45;
  color: var(--text-dark);
}

.article-excerpt {
  font-size: 0.92rem;
  color: #475569;
  margin-bottom: 20px;
  flex-grow: 1;
  line-height: 1.65;
}

.article-link {
  font-size: 0.92rem;
  color: #527883;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-link:hover {
  gap: 10px;
}

/* Article Detail Page Layout */
.article-detail-layout {
  padding: 60px 0 90px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 30px;
  font-weight: 500;
}

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

.article-header {
  max-width: 860px;
  margin: 0 auto 40px;
}

.article-header h1 {
  font-size: 2.35rem;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.35;
}

.article-body {
  max-width: 860px;
  margin: 0 auto;
  background-color: #ffffff;
  padding: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 600;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-dark);
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 28px 0 12px;
  color: #527883;
}

.article-body p {
  margin-bottom: 20px;
  color: #334155;
}

.article-body ul, .article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
  color: #334155;
}

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

.article-body blockquote {
  border-left: 4px solid #527883;
  background-color: var(--primary-light);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--accent);
}

.cta-box-inline {
  background: linear-gradient(135deg, #edf4f6, #e1ecef);
  border: 1px solid rgba(82, 120, 131, 0.25);
  border-radius: var(--radius-md);
  padding: 32px;
  margin: 40px 0;
  text-align: center;
}

.cta-box-inline h3 {
  color: #527883;
  margin-bottom: 8px;
}

.cta-box-inline p {
  font-size: 0.98rem;
  margin-bottom: 20px;
}

/* Related Articles Section */
.related-articles {
  max-width: 860px;
  margin: 50px auto 0;
}

.related-articles h3 {
  font-size: 1.35rem;
  margin-bottom: 20px;
}

/* Footer Section */
.footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 70px 0 30px;
  font-size: 0.92rem;
  border-top: 1px solid #334155;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand h4 {
  color: #ffffff;
  font-size: 1.25rem;
  margin-bottom: 14px;
  font-weight: 600;
}

.footer-brand p {
  color: #94a3b8;
  font-size: 0.92rem;
  margin-bottom: 20px;
}

.footer-col h5 {
  color: #ffffff;
  font-size: 1.0rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid #334155;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

/* Sticky Floating Action Bar (Mobile & Quick Registration) */
.sticky-cta-bar {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
}

/* Search Box */
.search-box-wrap {
  max-width: 520px;
  margin: 0 auto 40px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 14px 22px;
  padding-right: 48px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  font-size: 0.98rem;
  outline: none;
  transition: var(--transition);
  background-color: #ffffff;
}

.search-input:focus {
  border-color: #527883;
  box-shadow: 0 0 0 3px rgba(82, 120, 131, 0.2);
}

/* Responsive Rules */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-text-col {
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-banner-card {
    max-width: 100%;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
  }
  .pricing-card.popular {
    transform: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .tutorial-box {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.3rem;
  }
}

@media (max-width: 768px) {
  .hero-features-strip {
    grid-template-columns: 1fr;
  }
  .node-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #ffffff;
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--border-color);
  }
  .nav-links.show {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .article-body {
    padding: 24px;
  }
  .extra-pricing-banner {
    flex-direction: column;
    text-align: center;
  }
}