@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --primary-color: #0d6efd;
  --primary-rgb: 13, 110, 253;
  --secondary-color: #0dcaf0;
  --secondary-rgb: 13, 202, 240;
  --dark-color: #0f172a;
  --light-color: #f8fafc;
  --text-main: #334155;
  --border-color: #e2e8f0;
  --bg-gradient: linear-gradient(135deg, #f0f5ff 0%, #ffffff 100%);
  --card-shadow: 0 10px 30px -10px rgba(13, 110, 253, 0.08);
  --hover-shadow: 0 20px 40px -15px rgba(13, 110, 253, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: 'Outfit', 'Noto Sans SC', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--light-color);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Common Section Styles */
section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-subtitle {
  color: var(--primary-color);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.875rem;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  color: var(--dark-color);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-main);
  font-size: 1.125rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #fff;
  box-shadow: 0 4px 15px rgba(13, 110, 253, 0.3);
}

.btn-primary:hover {
  background-color: #0b5ed7;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13, 110, 253, 0.4);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: #fff;
  transform: translateY(-2px);
}

/* Header & Navbar */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

header.scrolled {
  background-color: #ffffff;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  padding: 10px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: var(--transition);
}

header.scrolled .nav-container {
  height: 64px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo span {
  color: var(--primary-color);
}

.logo-dot {
  width: 10px;
  height: 10px;
  background-color: var(--secondary-color);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s infinite;
}

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

.nav-links a {
  color: var(--text-main);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  font-size: 0.95rem;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

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

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--bg-gradient);
  padding-top: 120px;
  position: relative;
  overflow: hidden;
}

.hero-wrapper {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 620px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(13, 110, 253, 0.08);
  color: var(--primary-color);
  padding: 8px 16px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 24px;
}

.hero-tag i {
  color: var(--secondary-color);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--dark-color);
  margin-bottom: 24px;
}

.hero-title span {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-main);
  margin-bottom: 40px;
}

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

/* Dynamic Decor Elements */
.decor-bubble {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(13, 110, 253, 0.08) 0%, rgba(13, 202, 240, 0.05) 100%);
  z-index: 1;
  pointer-events: none;
}

.bubble-1 {
  width: 400px;
  height: 400px;
  top: -100px;
  right: -100px;
  animation: float-slow 20s infinite alternate ease-in-out;
}

.bubble-2 {
  width: 250px;
  height: 250px;
  bottom: -50px;
  left: -50px;
  animation: float-slow 15s infinite alternate-reverse ease-in-out;
}

.bubble-3 {
  width: 80px;
  height: 80px;
  top: 40%;
  left: 45%;
  animation: float-fast 8s infinite alternate ease-in-out;
}

/* Hero Interactive Graphic */
.hero-graphic {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.graphic-container {
  width: 100%;
  max-width: 450px;
  aspect-ratio: 1;
  background: #ffffff;
  border-radius: 32px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.graphic-container::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 34px;
  z-index: -1;
  opacity: 0.15;
  filter: blur(10px);
}

.network-nodes {
  height: 200px;
  position: relative;
  margin-bottom: 24px;
  border-radius: 16px;
  background: linear-gradient(180deg, #f8fafc 0%, #edf2f9 100%);
  border: 1px dashed rgba(13, 110, 253, 0.15);
  overflow: hidden;
}

.node {
  position: absolute;
  width: 12px;
  height: 12px;
  background-color: var(--primary-color);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(13, 110, 253, 0.5);
}

.node-center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 18px;
  height: 18px;
  background-color: var(--secondary-color);
  box-shadow: 0 0 15px rgba(13, 202, 240, 0.8);
  animation: pulse-node 2s infinite;
}

.node-1 { top: 20%; left: 20%; }
.node-2 { top: 30%; right: 25%; }
.node-3 { bottom: 25%; left: 30%; }
.node-4 { bottom: 20%; right: 20%; }

.node-line {
  position: absolute;
  background-color: rgba(13, 110, 253, 0.15);
  transform-origin: left center;
  height: 2px;
}

.network-speed-info {
  display: flex;
  justify-content: space-around;
  text-align: center;
}

.speed-metric {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
}

.speed-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Core Advantages */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.feature-card {
  background: #ffffff;
  padding: 40px 32px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--hover-shadow);
  border-color: rgba(13, 110, 253, 0.15);
}

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

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  background-color: rgba(13, 110, 253, 0.05);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon-wrapper {
  background-color: var(--primary-color);
}

.feature-card:hover .feature-icon-wrapper i {
  color: #ffffff;
}

.feature-icon-wrapper i {
  font-size: 1.5rem;
  color: var(--primary-color);
  transition: var(--transition);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-main);
  font-size: 0.95rem;
}

/* Pricing Plans */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  align-items: stretch;
}

.pricing-card {
  background: #ffffff;
  border-radius: 24px;
  border: 1px solid var(--border-color);
  padding: 48px 36px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--hover-shadow);
}

.pricing-card.popular {
  border: 2px solid var(--primary-color);
  transform: scale(1.03);
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
}

.pricing-header {
  margin-bottom: 30px;
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 12px;
}

.price-box {
  display: flex;
  align-items: baseline;
  margin-bottom: 8px;
}

.currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark-color);
}

.price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--dark-color);
  line-height: 1;
}

.period {
  color: var(--text-muted);
  font-size: 1rem;
  margin-left: 4px;
}

.pricing-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.pricing-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 24px 0;
}

.pricing-features {
  margin-bottom: 40px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.pricing-features li i {
  color: var(--primary-color);
  font-size: 1.125rem;
}

.pricing-features li.disabled {
  color: var(--text-muted);
  text-decoration: line-through;
}

.pricing-features li.disabled i {
  color: var(--text-muted);
}

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

/* Node Latency and Status Section */
.status-container {
  background: #ffffff;
  border-radius: 24px;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  padding: 40px;
}

.status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 16px;
}

.status-overall {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-indicator {
  width: 14px;
  height: 14px;
  background-color: #10b981;
  border-radius: 50%;
  display: inline-block;
  animation: pulse-green 2s infinite;
}

.status-text {
  font-weight: 700;
  color: var(--dark-color);
  font-size: 1.125rem;
}

.node-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.node-item {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1fr 1fr 1fr;
  align-items: center;
  padding: 20px 24px;
  background-color: var(--light-color);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.node-item:hover {
  border-color: rgba(13, 110, 253, 0.15);
  background-color: #ffffff;
  transform: translateX(5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
}

.node-name-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.node-flag {
  font-size: 1.5rem;
}

.node-name {
  font-weight: 700;
  color: var(--dark-color);
}

.node-type {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background-color: rgba(13, 110, 253, 0.06);
  color: var(--primary-color);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  justify-self: start;
}

.node-ping {
  font-family: monospace;
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.ping-excellent { color: #10b981; }
.ping-good { color: #3b82f6; }

.node-load-container {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.node-load-bar {
  flex-grow: 1;
  height: 6px;
  background-color: var(--border-color);
  border-radius: 10px;
  overflow: hidden;
}

.node-load-fill {
  height: 100%;
  background: linear-gradient(90deg, #10b981, #3b82f6);
  border-radius: 10px;
}

.node-load-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  min-width: 32px;
  text-align: right;
}

.node-status-badge {
  justify-self: end;
  font-size: 0.85rem;
  font-weight: 600;
  color: #10b981;
  background-color: rgba(16, 185, 129, 0.1);
  padding: 4px 12px;
  border-radius: 50px;
}

/* User Reviews Section */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.review-card {
  background: #ffffff;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  padding: 36px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--hover-shadow);
}

.review-stars {
  color: #fbbf24;
  margin-bottom: 20px;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 24px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 16px;
}

.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--light-color);
  overflow: hidden;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}

.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark-color);
}

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

/* FAQ Accordion Section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(13, 110, 253, 0.15);
}

.faq-question {
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  font-weight: 700;
  color: var(--dark-color);
  font-size: 1.1rem;
  transition: var(--transition);
}

.faq-question i {
  color: var(--primary-color);
  transition: var(--transition);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background-color: #fcfdfe;
  border-top: 1px solid transparent;
}

.faq-answer-inner {
  padding: 24px;
  color: var(--text-main);
  font-size: 0.95rem;
}

/* FAQ Active state */
.faq-item.active {
  border-color: var(--primary-color);
}

.faq-item.active .faq-question {
  background-color: rgba(13, 110, 253, 0.02);
  color: var(--primary-color);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-item.active .faq-answer {
  border-top-color: var(--border-color);
}

/* Knowledge Base / Tutorials Section */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.article-card {
  background: #ffffff;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--hover-shadow);
  border-color: rgba(13, 110, 253, 0.15);
}

.article-thumb {
  height: 180px;
  background: linear-gradient(135deg, rgba(13, 110, 253, 0.05) 0%, rgba(13, 202, 240, 0.05) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.article-thumb i {
  font-size: 3.5rem;
  color: var(--primary-color);
  opacity: 0.8;
  transition: var(--transition);
}

.article-card:hover .article-thumb i {
  transform: scale(1.1);
  color: var(--secondary-color);
}

.article-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: rgba(13, 110, 253, 0.08);
  color: var(--primary-color);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

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

.article-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark-color);
  line-height: 1.4;
  margin-bottom: 12px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-link {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-color);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}

.article-link i {
  transition: var(--transition);
}

.article-card:hover .article-link i {
  transform: translateX(4px);
}

/* Footer Section */
footer {
  background-color: var(--dark-color);
  color: #fff;
  padding: 80px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-info p {
  color: #94a3b8;
  margin: 16px 0 24px;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 12px;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--primary-color);
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: #94a3b8;
  transition: var(--transition);
  font-size: 0.95rem;
}

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

.footer-cta p {
  color: #94a3b8;
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  color: #64748b;
  font-size: 0.875rem;
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  color: #64748b;
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer-bottom-links a:hover {
  color: var(--primary-color);
}

/* ========================================================
   Article Detail Page Layout Styling
   ======================================================== */
.article-detail-page {
  background-color: #f8fafc;
}

.article-header-section {
  background: var(--bg-gradient);
  padding: 140px 0 60px;
  border-bottom: 1px solid var(--border-color);
}

.back-to-home {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.back-to-home:hover {
  color: #0b5ed7;
}

.article-header-title {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--dark-color);
  line-height: 1.3;
  margin-bottom: 20px;
}

.article-header-meta {
  display: flex;
  gap: 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(13, 110, 253, 0.08);
  padding-bottom: 20px;
  flex-wrap: wrap;
}

.article-header-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-layout {
  display: grid;
  grid-template-columns: 2.2fr 0.8fr;
  gap: 40px;
  padding: 60px 0 100px;
}

.article-main-content {
  background: #ffffff;
  padding: 48px;
  border-radius: 24px;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}

.article-body-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-main);
}

.article-body-content h2 {
  font-size: 1.75rem;
  color: var(--dark-color);
  margin: 36px 0 18px;
  font-weight: 800;
  position: relative;
  padding-left: 14px;
}

.article-body-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background-color: var(--primary-color);
  border-radius: 4px;
}

.article-body-content p {
  margin-bottom: 24px;
}

.article-body-content strong {
  color: var(--dark-color);
  font-weight: 700;
}

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

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

.article-body-content ul li {
  list-style-type: disc;
}

.article-body-content ol li {
  list-style-type: decimal;
}

.article-body-content pre, .article-body-content code {
  font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
  background-color: #f1f5f9;
  border-radius: 6px;
}

.article-body-content code {
  padding: 2px 6px;
  font-size: 0.9em;
  color: #0f172a;
}

.article-body-content pre {
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 24px;
  border: 1px solid #e2e8f0;
}

.article-body-content pre code {
  padding: 0;
  background-color: transparent;
  font-size: 0.9rem;
}

/* Callout Box inside Articles */
.article-callout {
  background-color: rgba(13, 110, 253, 0.04);
  border-left: 4px solid var(--primary-color);
  padding: 20px;
  border-radius: 0 12px 12px 0;
  margin: 30px 0;
}

.article-callout h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.article-callout p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Sidebar Styling */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.sidebar-widget {
  background: #ffffff;
  padding: 30px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}

.sidebar-widget.promo-widget {
  background: linear-gradient(135deg, var(--dark-color) 0%, #1e293b 100%);
  color: #ffffff;
  border: none;
  text-align: center;
}

.promo-widget h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.promo-widget p {
  color: #94a3b8;
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.widget-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.widget-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary-color);
}

.related-articles-list li {
  margin-bottom: 16px;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 16px;
}

.related-articles-list li:last-child {
  margin-bottom: 0;
  border-bottom: none;
  padding-bottom: 0;
}

.related-article-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--dark-color);
  line-height: 1.4;
  margin-bottom: 4px;
  display: block;
  transition: var(--transition);
}

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

.related-article-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Animations */
@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes pulse-node {
  0% { transform: translate(-50%, -50%) scale(1); box-shadow: 0 0 15px rgba(13, 202, 240, 0.8); }
  50% { transform: translate(-50%, -50%) scale(1.2); box-shadow: 0 0 25px rgba(13, 202, 240, 1); }
  100% { transform: translate(-50%, -50%) scale(1); box-shadow: 0 0 15px rgba(13, 202, 240, 0.8); }
}

@keyframes pulse-green {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

@keyframes float-slow {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(30px, 30px) rotate(15deg); }
}

@keyframes float-fast {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-15px, -15px) scale(1.1); }
}

/* ========================================================
   Responsive Styling
   ======================================================== */
@media (max-width: 992px) {
  .hero-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-content {
    margin: 0 auto;
  }
  
  .hero-btns {
    justify-content: center;
  }
  
  .hero-graphic {
    order: 2;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .article-layout {
    grid-template-columns: 1fr;
  }
  
  .article-sidebar {
    order: 2;
  }
  
  .article-main-content {
    order: 1;
  }
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .nav-links {
    display: none; /* simple mobile drawer toggle or hidden layout for simplicity */
  }
  
  .pricing-card.popular {
    transform: none;
  }
  
  .pricing-card.popular:hover {
    transform: translateY(-8px);
  }
  
  .node-item {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  
  .node-load-container {
    grid-column: span 2;
  }
  
  .node-status-badge {
    justify-self: start;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .article-main-content {
    padding: 24px;
  }
  
  .article-header-title {
    font-size: 2rem;
  }
}