/* ==========================================================================
   FlyingBird (飞鸟机场) - High-Speed IPLC/IEPL Dedicated Lines
   Design System: Deep Space Cosmic Blue & Electric Ice Cyan
   ========================================================================== */

:root {
  --bg-dark: #070b12;
  --bg-card: rgba(15, 23, 42, 0.72);
  --bg-card-hover: rgba(20, 32, 56, 0.85);
  --bg-header: rgba(7, 11, 18, 0.82);
  --bg-input: rgba(15, 23, 42, 0.9);
  
  --primary-cyan: #38bdf8;
  --primary-blue: #0284c7;
  --primary-deep: #0369a1;
  --cyan-bright: #7dd3fc;
  --neon-glow: rgba(56, 189, 248, 0.38);
  --neon-glow-strong: rgba(56, 189, 248, 0.65);
  
  --gradient-primary: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  --gradient-hover: linear-gradient(135deg, #7dd3fc 0%, #0369a1 100%);
  --gradient-text: linear-gradient(135deg, #ffffff 20%, #7dd3fc 70%, #38bdf8 100%);
  --gradient-border: linear-gradient(135deg, rgba(56, 189, 248, 0.5), rgba(2, 132, 199, 0.15));
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --border-glass: rgba(56, 189, 248, 0.14);
  --border-hover: rgba(56, 189, 248, 0.45);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.28);
  --shadow-button: 0 4px 20px rgba(56, 189, 248, 0.35);
  
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset */
*, *::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;
  scroll-behavior: smooth;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background: 
    radial-gradient(circle at 15% 10%, rgba(56, 189, 248, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 35%, rgba(2, 132, 199, 0.14) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, rgba(14, 165, 233, 0.08) 0%, transparent 50%),
    var(--bg-dark);
  background-attachment: fixed;
}

/* Cyber Matrix Background Grid */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(to right, rgba(56, 189, 248, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography Utilities */
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.1);
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--primary-cyan);
  box-shadow: 0 0 8px var(--primary-cyan);
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.2); }
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  text-align: center;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 50px auto;
  text-align: center;
}

/* Glassmorphism Card Base */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

/* Glowing Border Accent */
.glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.6), transparent);
  opacity: 0;
  transition: var(--transition);
}

.glass-card:hover::before {
  opacity: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 600;
  border-radius: var(--radius-full);
  padding: 13px 28px;
  font-size: 0.98rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: none;
  outline: none;
  text-align: center;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #04101c;
  font-weight: 700;
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  background: var(--gradient-hover);
  box-shadow: 0 0 30px var(--neon-glow-strong);
  transform: translateY(-2px);
  color: #030d17;
}

.btn-secondary {
  background: rgba(15, 23, 42, 0.85);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--primary-cyan);
  color: var(--primary-cyan);
  box-shadow: 0 0 18px rgba(56, 189, 248, 0.2);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.88rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 76px;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px var(--neon-glow);
  color: #04101c;
  font-size: 1.25rem;
  font-weight: 900;
}

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

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

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary-cyan);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding-top: 155px;
  padding-bottom: 90px;
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: 920px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.3rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 24px;
  letter-spacing: -0.8px;
}

.hero-description {
  font-size: clamp(1.05rem, 2vw, 1.22rem);
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 780px;
  margin: 0 auto 38px auto;
}

.hero-description strong {
  color: var(--primary-cyan);
  font-weight: 600;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

/* Live Metrics Ribbon */
.metrics-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 30px;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.metric-item:last-child {
  border-right: none;
}

.metric-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ==========================================================================
   Core Advantages / Features Section
   ========================================================================== */
.features-section {
  padding: 90px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--primary-cyan);
  margin-bottom: 24px;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.12);
  transition: var(--transition);
}

.feature-card:hover .feature-icon-wrapper {
  transform: scale(1.08) rotate(3deg);
  background: var(--gradient-primary);
  color: #04101c;
  box-shadow: 0 0 25px var(--neon-glow);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-main);
}

.feature-text {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex-grow: 1;
  margin-bottom: 20px;
}

.feature-highlight-list {
  list-style: none;
  font-size: 0.88rem;
  color: var(--primary-cyan);
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 18px;
}

.feature-highlight-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature-highlight-list li::before {
  content: "✦";
  color: var(--primary-cyan);
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */
.pricing-section {
  padding: 90px 0;
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  padding: 42px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.featured {
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 0 35px rgba(56, 189, 248, 0.22);
  background: linear-gradient(180deg, rgba(20, 35, 60, 0.8) 0%, rgba(15, 23, 42, 0.75) 100%);
  transform: scale(1.03);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.popular-badge {
  position: absolute;
  top: 16px;
  right: 20px;
  background: var(--gradient-primary);
  color: #04101c;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.price-currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-cyan);
}

.price-number {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-main);
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 34px;
  flex-grow: 1;
}

.plan-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.check-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.15);
  color: var(--primary-cyan);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 900;
  flex-shrink: 0;
}

.pricing-card .btn {
  width: 100%;
}

/* ==========================================================================
   Technical Articles / Guides Section
   ========================================================================== */
.articles-section {
  padding: 90px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.article-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 0;
}

.article-thumb-placeholder {
  width: 100%;
  height: 210px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0b1528 0%, #162a45 100%);
  border-bottom: 1px solid var(--border-glass);
}

.article-thumb-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 70% 30%, rgba(56, 189, 248, 0.25) 0%, transparent 60%),
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: cover, 24px 24px;
}

.thumb-tag {
  position: absolute;
  top: 18px;
  left: 20px;
  background: rgba(7, 11, 18, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--primary-cyan);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.thumb-visual-icon {
  font-size: 4rem;
  opacity: 0.85;
  filter: drop-shadow(0 0 15px rgba(56, 189, 248, 0.4));
  transition: var(--transition);
}

.article-card:hover .thumb-visual-icon {
  transform: scale(1.1) translateY(-4px);
}

.article-body {
  padding: 30px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 5px;
}

.article-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 14px;
  color: var(--text-main);
  transition: var(--transition);
}

.article-card:hover .article-title {
  color: var(--primary-cyan);
}

.article-excerpt {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.article-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-cyan);
  font-weight: 600;
  font-size: 0.94rem;
}

.article-link:hover {
  gap: 12px;
  color: var(--cyan-bright);
}

/* ==========================================================================
   Reviews / Testimonials Section
   ========================================================================== */
.reviews-section {
  padding: 90px 0;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}

.review-stars {
  color: #fbbf24;
  font-size: 1.1rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.review-quote {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 24px;
  flex-grow: 1;
  font-style: italic;
}

.reviewer-profile {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 18px;
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e293b 0%, #38bdf8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
  border: 1px solid var(--border-glass);
}

.reviewer-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

.reviewer-info p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-section {
  padding: 90px 0;
}

.faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-question {
  padding: 22px 26px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.1);
  color: var(--primary-cyan);
  font-size: 1rem;
  transition: transform 0.3s ease;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
  background: var(--primary-cyan);
  color: #04101c;
}

.faq-answer {
  padding: 0 26px 22px 26px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 16px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #040810;
  border-top: 1px solid var(--border-glass);
  padding: 70px 0 35px 0;
  margin-top: 60px;
  position: relative;
  z-index: 1;
}

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

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 360px;
  margin-top: 16px;
}

.footer-group h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 20px;
  position: relative;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-cyan);
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 25px;
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-seo-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 15px;
}

.seo-pill {
  font-size: 0.78rem;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.03);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition);
}

.seo-pill:hover {
  color: var(--primary-cyan);
  border-color: rgba(56, 189, 248, 0.3);
}

/* ==========================================================================
   Article Detail Page Additions (for reading articles)
   ========================================================================== */
.article-header {
  padding-top: 150px;
  padding-bottom: 50px;
  text-align: center;
}

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

.article-content {
  font-size: 1.05rem;
  color: #cbd5e1;
  line-height: 1.9;
  padding: 40px;
}

.article-content h2 {
  font-size: 1.7rem;
  color: var(--text-main);
  margin: 40px 0 18px 0;
  border-left: 4px solid var(--primary-cyan);
  padding-left: 14px;
}

.article-content h3 {
  font-size: 1.3rem;
  color: var(--cyan-bright);
  margin: 28px 0 14px 0;
}

.article-content p {
  margin-bottom: 22px;
}

.article-content ul, .article-content ol {
  margin: 0 0 24px 24px;
}

.article-content li {
  margin-bottom: 10px;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.95rem;
  background: rgba(15, 23, 42, 0.5);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.article-content th, .article-content td {
  padding: 14px 18px;
  border: 1px solid rgba(56, 189, 248, 0.15);
  text-align: left;
}

.article-content th {
  background: rgba(56, 189, 248, 0.1);
  color: var(--primary-cyan);
  font-weight: 700;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, rgba(2, 132, 199, 0.18) 100%);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin: 45px 0;
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.5rem;
  color: var(--text-main);
  margin-bottom: 12px;
}

.article-cta-box p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 24px auto;
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 1024px) {
  .features-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-card.featured {
    transform: none;
  }

  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }

  .metrics-ribbon {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .metric-item:nth-child(2) {
    border-right: none;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 68px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(7, 11, 18, 0.98);
    backdrop-filter: blur(25px);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-glass);
    gap: 18px;
  }

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

  .mobile-toggle {
    display: block;
  }

  .hero-section {
    padding-top: 125px;
    padding-bottom: 60px;
  }

  .features-grid,
  .pricing-grid,
  .reviews-grid,
  .articles-grid {
    grid-template-columns: 1fr;
  }

  .metrics-ribbon {
    grid-template-columns: 1fr;
  }

  .metric-item {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 16px;
  }

  .metric-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .article-content {
    padding: 24px 16px;
  }
}