/* ==========================================
   星链云加速器 Simplified Chinese Landing Site Styles
   Theme: Botanical Geometry without Leaf Photos
   Palette:
     Chalk White:      #FBFCF8
     Dark Pine:        #24463C
     Soft Fern:        #9AB89D
     Muted Limestone:  #E4E7DD
   Typography:
     Heading: Chinese Serif Fallback
     Body:    Clean System Sans-serif (17px)
     Mono:    Light Monospace for labels
   ========================================== */

:root {
  --color-chalk: #FBFCF8;
  --color-dark-pine: #24463C;
  --color-dark-pine-deep: #19332B;
  --color-soft-fern: #9AB89D;
  --color-muted-limestone: #E4E7DD;
  --color-limestone-dark: #D4D8C8;
  --color-text-main: #24463C;
  --color-text-sub: #49665B;
  --color-text-muted: #6B877B;
  --color-accent-active: #24463C;
  --color-white: #FFFFFF;
  --color-shadow: rgba(36, 70, 60, 0.08);
  --color-card-bg: #FFFFFF;
  --color-highlight-bg: #F4F6F0;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", STSong, serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --font-size-h1: 59px;
  --font-size-h2: 36px;
  --font-size-h3: 24px;
  --font-size-body: 17px;
  --font-size-small: 14px;
  --font-size-mono: 13px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --container-max: 1240px;
  --header-height: 72px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-chalk);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-dark-pine);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1 {
  font-size: var(--font-size-h1);
  line-height: 1.15;
  margin-bottom: 24px;
}

h2 {
  font-size: var(--font-size-h2);
  margin-bottom: 20px;
}

h3 {
  font-size: var(--font-size-h3);
  margin-bottom: 14px;
}

p {
  margin-bottom: 16px;
  color: var(--color-text-sub);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-dark-pine);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover, a:focus-visible {
  color: var(--color-soft-fern);
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: var(--font-size-mono);
  color: var(--color-dark-pine);
  background: var(--color-muted-limestone);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
  letter-spacing: 0.04em;
  font-weight: 500;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section-padding {
  padding-top: 80px;
  padding-bottom: 80px;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 56px;
}

.section-header .mono-tag {
  margin-bottom: 14px;
}

.section-header p {
  font-size: 18px;
  color: var(--color-text-sub);
}

/* Header Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(251, 252, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-muted-limestone);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-dark-pine);
  letter-spacing: -0.02em;
}

.brand-icon-geo {
  width: 32px;
  height: 32px;
  background-color: var(--color-dark-pine);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-icon-geo svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-chalk);
}

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

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-main);
  padding: 8px 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-soft-fern);
  transition: width var(--transition-fast);
}

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

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

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--color-dark-pine);
  color: var(--color-chalk);
  border-color: var(--color-dark-pine);
  box-shadow: 0 4px 14px var(--color-shadow);
}

.btn-primary:hover {
  background-color: var(--color-dark-pine-deep);
  border-color: var(--color-dark-pine-deep);
  color: var(--color-chalk);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-muted-limestone);
  color: var(--color-dark-pine);
  border-color: var(--color-limestone-dark);
}

.btn-secondary:hover {
  background-color: var(--color-soft-fern);
  color: var(--color-dark-pine-deep);
  border-color: var(--color-soft-fern);
}

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

.btn-outline:hover {
  background-color: var(--color-dark-pine);
  color: var(--color-chalk);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-dark-pine);
}

.mobile-nav-toggle svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
}

/* Hero Section */
.hero-section {
  padding-top: 64px;
  padding-bottom: 80px;
  overflow: hidden;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  max-width: 580px;
}

.hero-subhead {
  font-size: 19px;
  color: var(--color-text-sub);
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-badges {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.hero-badge-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-badge-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-dark-pine);
}

/* Geometric Dashboard Card (Right Hero) */
.hero-dashboard-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 12px 36px var(--color-shadow);
  position: relative;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-muted-limestone);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.dashboard-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-dark-pine);
  display: flex;
  align-items: center;
  gap: 8px;
}

.dashboard-status-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--color-soft-fern);
  border-radius: 50%;
  display: inline-block;
}

.dashboard-regions-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.region-box {
  background: var(--color-chalk);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-sm);
  padding: 10px;
  text-align: center;
}

.region-code {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-dark-pine);
  display: block;
  margin-bottom: 2px;
}

.region-name {
  font-size: 12px;
  color: var(--color-text-sub);
}

/* Botanical Geometry Canvas / Network Diagram */
.geo-network-diagram {
  width: 100%;
  height: 240px;
  background-color: #F6F8F3;
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

.geo-network-svg {
  width: 100%;
  height: 100%;
}

/* Pulse animation at route junction */
.pulse-junction {
  animation: pulse-glow 2.5s infinite ease-in-out;
  transform-origin: center;
}

.pulse-ring-elem {
  animation: pulse-ring 2.5s infinite ease-out;
  transform-origin: center;
}

@keyframes pulse-glow {
  0%, 100% { fill: var(--color-dark-pine); opacity: 1; }
  50% { fill: var(--color-soft-fern); opacity: 0.6; }
}

@keyframes pulse-ring {
  0% { r: 6; opacity: 0.9; stroke-width: 1.5px; }
  80%, 100% { r: 22; opacity: 0; stroke-width: 0.5px; }
}

@media (prefers-reduced-motion: reduce) {
  .pulse-junction, .pulse-ring-elem {
    animation: none !important;
  }
}

/* Advantage Section - Branching Layouts of Different Widths */
.advantages-grid {
  display: grid;
  grid-template-columns: 12fr;
  gap: 24px;
}

.advantage-branch-row {
  display: grid;
  gap: 24px;
}

.branch-row-1 {
  grid-template-columns: 1fr;
}

.branch-row-2 {
  grid-template-columns: 7fr 5fr;
}

.branch-row-3 {
  grid-template-columns: 4fr 4fr 4fr;
}

.advantage-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-md);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.advantage-card:hover {
  border-color: var(--color-soft-fern);
  box-shadow: 0 8px 24px var(--color-shadow);
}

.advantage-card .mono-tag {
  margin-bottom: 16px;
}

.advantage-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.advantage-card p {
  font-size: 15px;
  color: var(--color-text-sub);
}

/* Botanical Geometry CSS Decoration Pattern for Cards */
.geo-bg-pattern {
  position: absolute;
  top: 0;
  right: 0;
  width: 140px;
  height: 140px;
  pointer-events: none;
  opacity: 0.25;
}

/* Global Nodes Section */
.nodes-section {
  background-color: #F4F6F0;
  border-top: 1px solid var(--color-muted-limestone);
  border-bottom: 1px solid var(--color-muted-limestone);
}

.node-groups-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.node-group-card {
  background: var(--color-chalk);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}

.node-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-muted-limestone);
}

.node-group-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-dark-pine);
}

.node-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
}

.node-name {
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-name-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-soft-fern);
}

.node-desc {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-muted);
}

/* AI & Streaming Pathways Section */
.pathways-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.pathway-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
}

.pathway-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--color-dark-pine);
  color: var(--color-chalk);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.pathway-title {
  font-size: 26px;
  margin-bottom: 12px;
}

.pathway-desc {
  font-size: 15px;
  margin-bottom: 24px;
}

.scenario-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.scenario-tag {
  background: var(--color-chalk);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-dark-pine);
  display: flex;
  align-items: center;
  gap: 6px;
}

.scenario-tag svg {
  width: 14px;
  height: 14px;
  stroke: var(--color-soft-fern);
}

/* Pricing Section & Comparison Matrix */
.pricing-matrix-container {
  background: var(--color-card-bg);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 20px var(--color-shadow);
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.pricing-table th, .pricing-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-muted-limestone);
}

.pricing-table th {
  background: #F8FAF5;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-dark-pine);
}

.pricing-table th:first-child {
  width: 25%;
}

.pricing-plan-header {
  text-align: center;
}

.plan-name {
  font-size: 20px;
  margin-bottom: 4px;
}

.plan-price-placeholder {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-text-muted);
}

.pricing-table td {
  font-size: 15px;
  color: var(--color-text-sub);
}

.pricing-table td.feature-label {
  font-weight: 600;
  color: var(--color-dark-pine);
  background: #FBFCF8;
}

.pricing-table td.plan-val {
  text-align: center;
}

.pricing-notice {
  background: #F4F6F0;
  padding: 16px 24px;
  font-size: 14px;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-muted-limestone);
  text-align: center;
}

/* Nine SEO Article Cards Section */
.articles-section {
  background-color: var(--color-chalk);
}

/* Grid requirements: 3 desktop / 2 tablet / 1 mobile columns */
.article-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.article-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-soft-fern);
}

.article-card-header {
  margin-bottom: 16px;
}

.article-card-header .mono-tag {
  margin-bottom: 12px;
}

.article-card-title {
  font-size: 20px;
  line-height: 1.35;
  margin-bottom: 10px;
}

.article-card-excerpt {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-muted-limestone);
  padding-top: 14px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.read-more-link {
  font-weight: 600;
  color: var(--color-dark-pine);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.read-more-link svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  transition: transform var(--transition-fast);
}

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

/* Sample Testimonials Section */
.testimonials-section {
  background-color: #F4F6F0;
  border-top: 1px solid var(--color-muted-limestone);
  border-bottom: 1px solid var(--color-muted-limestone);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--color-chalk);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-md);
  padding: 28px;
}

.testimonial-quote {
  font-size: 15px;
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}

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

.author-avatar-geo {
  width: 40px;
  height: 40px;
  background-color: var(--color-muted-limestone);
  border: 1px solid var(--color-soft-fern);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-dark-pine);
  font-size: 14px;
}

.author-info-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-dark-pine);
}

.author-info-role {
  font-size: 13px;
  color: var(--color-text-muted);
}

.testimonial-disclaimer {
  margin-top: 32px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
}

/* FAQ Accordion Section */
.faq-list {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-dark-pine);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  width: 20px;
  height: 20px;
  stroke: var(--color-dark-pine);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 1000px;
  transition: max-height 0.5s ease-in-out;
  padding: 0 24px 20px 24px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--color-text-sub);
}

/* Footer Section */
.site-footer {
  background-color: var(--color-dark-pine-deep);
  color: var(--color-muted-limestone);
  padding-top: 64px;
  padding-bottom: 40px;
  border-top: 1px solid var(--color-dark-pine);
}

.footer-grid {
  display: grid;
  grid-template-columns: 4fr 2fr 2fr 4fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .brand-logo {
  color: var(--color-chalk);
  margin-bottom: 16px;
}

.footer-brand p {
  color: #A3B5AC;
  font-size: 14px;
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--color-chalk);
  margin-bottom: 20px;
  font-weight: 700;
}

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

.footer-links a {
  color: #C2CEB8;
  font-size: 14px;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(228, 231, 221, 0.15);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #8E9F96;
}

.footer-disclaimer-text {
  max-width: 700px;
  line-height: 1.5;
}

/* Article & Content Page Layout */
.page-header-banner {
  padding-top: 48px;
  padding-bottom: 40px;
  background-color: #F4F6F0;
  border-bottom: 1px solid var(--color-muted-limestone);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.breadcrumb-nav a {
  color: var(--color-text-sub);
}

.breadcrumb-nav a:hover {
  color: var(--color-dark-pine);
}

.breadcrumb-separator {
  color: var(--color-text-muted);
}

.article-meta-info {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 16px;
}

.article-container {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  padding-top: 56px;
  padding-bottom: 80px;
}

.article-body-content {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-text-main);
}

.article-body-content h2 {
  font-size: 28px;
  margin-top: 48px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-muted-limestone);
}

.article-body-content h3 {
  font-size: 22px;
  margin-top: 32px;
  margin-bottom: 14px;
}

.article-body-content p {
  margin-bottom: 20px;
}

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

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

.article-callout-box {
  background-color: #F4F6F0;
  border-left: 4px solid var(--color-dark-pine);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin: 28px 0;
}

.article-callout-box p {
  margin-bottom: 0;
  font-size: 16px;
}

.related-articles-box {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--color-muted-limestone);
}

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

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

.related-link-item {
  background: var(--color-chalk);
  border: 1px solid var(--color-muted-limestone);
  border-radius: var(--radius-sm);
  padding: 16px;
  display: block;
}

.related-link-item:hover {
  border-color: var(--color-soft-fern);
}

.related-link-title {
  font-weight: 600;
  font-size: 15px;
  color: var(--color-dark-pine);
  margin-bottom: 4px;
}

.related-link-desc {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* RESPONSIVE MEDIA QUERIES (375, 390, 430, 768, 1024, 1440) */

@media (max-width: 1024px) {
  :root {
    --font-size-h1: 46px;
    --font-size-h2: 32px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-copy {
    max-width: 100%;
  }

  .branch-row-2, .branch-row-3 {
    grid-template-columns: 1fr 1fr;
  }

  .node-groups-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-h1: 37px;
    --font-size-h2: 26px;
    --font-size-h3: 20px;
  }

  .site-header {
    height: 64px;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-chalk);
    border-bottom: 1px solid var(--color-muted-limestone);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    align-items: flex-start;
    display: none;
    box-shadow: 0 10px 30px var(--color-shadow);
  }

  .nav-menu.open {
    display: flex;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .header-actions .btn {
    padding: 8px 16px;
    font-size: 14px;
  }

  .branch-row-2, .branch-row-3 {
    grid-template-columns: 1fr;
  }

  .node-groups-grid {
    grid-template-columns: 1fr;
  }

  .pathways-grid {
    grid-template-columns: 1fr;
  }

  .article-cards-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .related-links-list {
    grid-template-columns: 1fr;
  }

  .dashboard-regions-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 430px) {
  .hero-ctas {
    flex-direction: column;
    align-width: 100%;
    align-items: stretch;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .pricing-table th, .pricing-table td {
    padding: 12px 10px;
    font-size: 13px;
  }
}