/* 飞鸟机场 FlyingBird Official Site - Clean Light Tech Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --font-main: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-subtle: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --brand-primary: #0284c7;
  --brand-hover: #0369a1;
  --brand-gradient: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  --dark-btn: #1e293b;
  --dark-btn-hover: #0f172a;
  --accent-cyan: #06b6d4;
  --accent-glow: rgba(2, 132, 199, 0.15);
  --border-color: #e2e8f0;
  --border-focus: #38bdf8;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 16px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 30px -5px rgba(15, 23, 42, 0.08);
  --shadow-hover: 0 20px 40px -10px rgba(2, 132, 199, 0.15);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background Dynamic Canvas */
#bird-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

.site-container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

/* Global Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  padding: 0.85rem 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--brand-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
}

.nav-links a {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--dark-btn);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--dark-btn-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-brand {
  background: var(--brand-gradient);
  color: white;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-brand:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.45);
}

.btn-outline {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: var(--bg-card-subtle);
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

/* Mobile Nav - Hidden by default on Desktop */
.mobile-nav {
  display: none !important;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* Badge Styling */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid rgba(2, 132, 199, 0.2);
  color: var(--brand-primary);
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--brand-primary);
  box-shadow: 0 0 8px var(--brand-primary);
}

/* Hero Section */
.hero {
  padding: 4.5rem 0 3.5rem;
  text-align: center;
  position: relative;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-title {
  font-size: 3.6rem;
  font-weight: 900;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-title .brand-accent {
  font-family: 'Inter', Georgia, serif;
  font-style: italic;
  font-weight: 700;
  color: var(--brand-primary);
  display: block;
  font-size: 3.4rem;
  margin-top: 0.2rem;
}

.hero-subtitle {
  max-width: 720px;
  margin: 0 auto 2.2rem;
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.hero-tag-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-tag-item::before {
  content: "•";
  color: #f59e0b;
  font-weight: bold;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.hero-banner-img {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
}

.hero-banner-inner {
  background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 50%, #ffffff 100%);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  text-align: left;
}

.banner-content {
  flex: 1;
}

.banner-content h3 {
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.banner-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.banner-illustration {
  width: 220px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Features Section */
.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 0.8rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.75rem;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: #cbd5e1;
}

.feature-icon-wrapper {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid rgba(2, 132, 199, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--brand-primary);
  font-size: 1.6rem;
  transition: var(--transition);
}

.feature-icon-wrapper.icon-red { background: #fee2e2; border-color: #fca5a5; color: #ef4444; }
.feature-icon-wrapper.icon-green { background: #dcfce7; border-color: #86efac; color: #22c55e; }
.feature-icon-wrapper.icon-purple { background: #f3e8ff; border-color: #d8b4fe; color: #a855f7; }
.feature-icon-wrapper.icon-orange { background: #ffedd5; border-color: #fed7aa; color: #f97316; }
.feature-icon-wrapper.icon-pink { background: #fce7f3; border-color: #fbcfe8; color: #ec4899; }
.feature-icon-wrapper.icon-blue { background: #e0f2fe; border-color: #bae6fd; color: #0284c7; }

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Pricing Section */
.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.toggle-switch {
  position: relative;
  width: 52px;
  height: 28px;
  background-color: var(--border-color);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}

.toggle-switch.active {
  background-color: var(--brand-primary);
}

.toggle-slider {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background-color: white;
  border-radius: 50%;
  transition: var(--transition);
}

.toggle-switch.active .toggle-slider {
  transform: translateX(24px);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.pricing-card.popular {
  border: 2px solid var(--brand-primary);
  box-shadow: var(--shadow-lg);
}

.popular-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--brand-gradient);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.8rem;
  border-radius: var(--radius-full);
}

.pricing-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.pricing-card .price {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.pricing-card .price span {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-card .plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--border-color);
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.pricing-features li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-features li svg {
  color: #10b981;
  flex-shrink: 0;
}

/* Audience Section */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.audience-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.audience-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

/* Tutorial Preview Section */
.tutorials-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.tutorial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: var(--transition);
}

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

.tutorial-card .platform-badge {
  display: inline-block;
  background: var(--bg-card-subtle);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 0.8rem;
}

.tutorial-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.tutorial-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
}

/* User Reviews Section */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.user-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

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

.stars {
  color: #f59e0b;
  margin-bottom: 0.75rem;
  font-size: 0.88rem;
}

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

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.faq-question {
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-question:hover {
  color: var(--brand-primary);
}

.faq-icon {
  transition: var(--transition);
  font-size: 1.2rem;
  color: var(--text-muted);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  background: var(--bg-main);
  padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
  max-height: 1000px;
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
}

.faq-answer p {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Articles Directory Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

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

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.article-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  display: flex;
  gap: 1rem;
}

.article-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.article-card h3 a:hover {
  color: var(--brand-primary);
}

.article-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.article-read-more {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Article Page Layout */
.article-page {
  padding: 3rem 0 5rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

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

.article-header {
  max-width: 860px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.article-header h1 {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
}

.article-header-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.article-content-wrapper {
  max-width: 860px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  box-shadow: var(--shadow-sm);
}

.toc-box {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
}

.toc-title {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.toc-list {
  list-style: none;
}

.toc-list li {
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
}

.toc-list li.toc-h3 {
  padding-left: 1.25rem;
}

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

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

.article-body h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 2.25rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--bg-card-subtle);
  letter-spacing: -0.01em;
}

.article-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 1.75rem 0 0.8rem;
}

.article-body p {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.article-body ul, .article-body ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-secondary);
}

.article-body li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.article-body blockquote {
  background: var(--bg-card-subtle);
  border-left: 4px solid var(--brand-primary);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text-primary);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.93rem;
}

.article-body th, .article-body td {
  padding: 0.8rem 1rem;
  border: 1px solid var(--border-color);
  text-align: left;
}

.article-body th {
  background: var(--bg-card-subtle);
  font-weight: 700;
}

.cta-banner-box {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%) !important;
  color: #ffffff !important;
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  text-align: center;
  margin: 3rem 0;
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.25);
}

.article-body .cta-banner-box h1,
.article-body .cta-banner-box h2,
.article-body .cta-banner-box h3,
.article-body .cta-banner-box h4,
.cta-banner-box h1,
.cta-banner-box h2,
.cta-banner-box h3,
.cta-banner-box h4 {
  color: #ffffff !important;
  font-size: 1.5rem !important;
  font-weight: 800 !important;
  margin-bottom: 0.75rem !important;
  letter-spacing: -0.01em;
}

.article-body .cta-banner-box p,
.cta-banner-box p {
  color: #e2e8f0 !important;
  font-size: 1rem !important;
  margin-bottom: 1.5rem !important;
}

.related-articles {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.related-articles h3 {
  font-size: 1.3rem;
  margin-bottom: 1.25rem;
}

/* Footer Section */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 4.5rem 0 2.5rem;
  margin-top: 5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand h3 {
  color: #ffffff !important;
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand p {
  color: #94a3b8 !important;
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-col h4 {
  color: #ffffff !important;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

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

.footer-col li {
  margin-bottom: 0.65rem;
}

.footer-col a {
  font-size: 0.88rem;
  color: #94a3b8;
}

.footer-col a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

/* Toast Notice */
.toast-msg {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--dark-btn);
  color: white;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  pointer-events: none;
  font-size: 0.9rem;
  font-weight: 500;
}

.toast-msg.show {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .features-grid, .tutorials-preview-grid, .reviews-grid, .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid, .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 2.8rem;
  }
  .hero-title .brand-accent {
    font-size: 2.6rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-card);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
  }
  .mobile-nav.active {
    display: block !important;
  }
  .mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
  }
  .features-grid, .pricing-grid, .audience-grid, .tutorials-preview-grid, .reviews-grid, .articles-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-title .brand-accent {
    font-size: 2.1rem;
  }
  .hero-banner-inner {
    flex-direction: column;
    text-align: center;
  }
  .article-header h1 {
    font-size: 1.8rem;
  }
  .article-content-wrapper {
    padding: 1.75rem 1.25rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}