/* ==========================================================================
   91jichang Landing Site - Soft Clay SaaS Theme
   Design Tokens & Modern Lightweight CSS
   ========================================================================== */

:root {
  --bg-primary: #FAF7F2;
  --bg-secondary: #F4EFEB;
  --bg-card: #FFFFFF;
  --bg-inset: #F2EBE5;
  --text-primary: #38322D;
  --text-secondary: #6B625B;
  --text-muted: #8E847C;
  --color-clay: #B67B65;
  --color-clay-hover: #9E644F;
  --color-clay-light: #F7EFEA;
  --color-pale-peach: #F0DED5;
  --color-pale-peach-deep: #DFBFA8;
  --color-muted-olive: #7B8064;
  --color-muted-olive-light: #ECEFE5;
  --border-color: #E8DFD7;
  --border-subtle: #EFE8E1;
  --shadow-clay: 0 4px 14px rgba(182, 123, 101, 0.16);
  --shadow-inset: inset 1px 1px 3px rgba(56, 50, 45, 0.05), inset -1px -1px 3px rgba(255, 255, 255, 0.8);
  --shadow-card: 0 2px 8px rgba(56, 50, 45, 0.04), 0 1px 2px rgba(56, 50, 45, 0.02);
  --shadow-card-hover: 0 8px 24px rgba(56, 50, 45, 0.08);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --container-max: 1180px;
}

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

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

body {
  font-family: var(--font-system);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-clay);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

a:hover {
  color: var(--color-clay-hover);
}

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

h1 {
  font-size: 34px;
}

@media (min-width: 768px) {
  h1 {
    font-size: 44px;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 48px;
  }
}

h2 {
  font-size: 26px;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  h2 {
    font-size: 32px;
  }
}

h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

@media (min-width: 768px) {
  h3 {
    font-size: 22px;
  }
}

p {
  margin-bottom: 16px;
}

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

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 768px) {
  .container {
    padding-left: 28px;
    padding-right: 28px;
  }
}

/* Header & Navigation */
.site-header {
  background-color: rgba(250, 247, 242, 0.92);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(4px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 22px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 34px;
  height: 34px;
  background-color: var(--color-clay);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(182, 123, 101, 0.3);
}

.main-nav {
  display: none;
}

@media (min-width: 1024px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
  }
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 22px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 4px;
  position: relative;
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 4px;
  right: 4px;
  height: 2px;
  background-color: var(--color-clay);
  border-radius: var(--radius-pill);
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  text-align: center;
  line-height: 1.2;
}

.btn-clay {
  background-color: var(--color-clay);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(182, 123, 101, 0.25);
}

.btn-clay:hover {
  background-color: var(--color-clay-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(182, 123, 101, 0.3);
}

.btn-soft {
  background-color: var(--color-pale-peach);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-soft:hover {
  background-color: var(--color-pale-peach-deep);
  color: var(--text-primary);
}

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

.btn-outline:hover {
  background-color: var(--bg-inset);
  color: var(--text-primary);
}

.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border-color);
  padding: 8px;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
}

@media (min-width: 1024px) {
  .mobile-toggle {
    display: none;
  }
}

.mobile-menu {
  display: none;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 18px 20px 24px;
}

.mobile-menu.is-open {
  display: block;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 18px;
}

.mobile-nav-links a {
  font-size: 16px;
  color: var(--text-primary);
  font-weight: 500;
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
}

/* Pills & Badges */
.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  background-color: var(--color-pale-peach);
  color: var(--color-clay);
  border: 1px solid var(--color-pale-peach-deep);
  margin-bottom: 12px;
}

.pill-olive {
  background-color: var(--color-muted-olive-light);
  color: var(--color-muted-olive);
  border-color: rgba(123, 128, 100, 0.3);
}

/* Hero Section */
.hero-section {
  padding: 34px 0 28px;
}

.hero-opening {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
  margin-bottom: 28px;
}

@media (min-width: 1024px) {
  .hero-opening {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 40px;
    margin-bottom: 32px;
  }
}

.hero-content h1 {
  margin-bottom: 14px;
  color: var(--text-primary);
}

.hero-description {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.68;
  margin-bottom: 22px;
}

.hero-cta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.hero-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 10px;
}

/* Inset Soft Visual Card */
.inset-panel {
  background-color: var(--bg-inset);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-inset);
  padding: 24px;
}

.hero-quick-card {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.quick-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
}

.quick-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.quick-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.quick-stat-box {
  background-color: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  border: 1px solid var(--border-subtle);
}

.quick-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.quick-stat-val {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

/* Wide Horizontal Network Dashboard */
.network-dashboard {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  padding: 24px 20px;
  margin-top: 8px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .network-dashboard {
    padding: 28px 32px;
  }
}

.dashboard-title-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 22px;
}

@media (min-width: 768px) {
  .dashboard-title-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

.dashboard-heading {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.dashboard-sub {
  font-size: 14px;
  color: var(--text-secondary);
}

.truthful-tag {
  font-size: 12px;
  color: var(--color-muted-olive);
  background-color: var(--color-muted-olive-light);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
}

/* Regional Topology Map & Pulses */
.topology-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .topology-container {
    grid-template-columns: repeat(4, 1fr);
  }
}

.region-node-card {
  background-color: var(--bg-inset);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: transform 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: hidden;
}

.region-node-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-clay);
}

.region-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.region-flag-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.pulse-indicator {
  position: relative;
  width: 10px;
  height: 10px;
  background-color: var(--color-muted-olive);
  border-radius: 50%;
}

.pulse-indicator::after {
  content: "";
  position: absolute;
  top: -4px;
  left: -4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--color-muted-olive);
  opacity: 0.7;
  animation: pulseRoute 2s infinite ease-out;
}

@keyframes pulseRoute {
  0% {
    transform: scale(0.5);
    opacity: 0.9;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}

.region-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 12px;
}

.region-meta {
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-color);
  padding-top: 8px;
  display: flex;
  justify-content: space-between;
}

.network-notice {
  font-size: 12px;
  color: var(--text-muted);
  background-color: var(--bg-secondary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  line-height: 1.6;
}

/* Sections Common */
.section {
  padding: 44px 0;
}

@media (min-width: 768px) {
  .section {
    padding: 60px 0;
  }
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 36px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
}

/* Three Advantages */
.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .advantages-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.advantage-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

.advantage-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

.advantage-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-pale-peach);
  color: var(--color-clay);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}

.advantage-title {
  font-size: 20px;
  margin-bottom: 10px;
}

.advantage-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Asymmetric Feature Cards / Use-Cases Area */
.usecase-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-bottom: 36px;
}

@media (min-width: 1024px) {
  .usecase-layout {
    grid-template-columns: 1.2fr 0.8fr;
  }
  .usecase-layout.reversed {
    grid-template-columns: 0.8fr 1.2fr;
  }
}

.asymmetric-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-card);
}

.asymmetric-card.tinted {
  background-color: var(--bg-inset);
}

.app-pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 20px;
}

.app-tag {
  font-size: 13px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

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

.scenario-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.55;
}

.scenario-check {
  color: var(--color-muted-olive);
  font-weight: bold;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Pricing Section */
.pricing-section {
  background-color: var(--bg-secondary);
  padding: 56px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
}

.pricing-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.pricing-card.featured {
  border-color: var(--color-clay);
  box-shadow: 0 6px 18px rgba(182, 123, 101, 0.14);
}

.featured-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background-color: var(--color-clay);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.pricing-tier-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.pricing-placeholder-box {
  background-color: var(--bg-inset);
  border: 1px dashed var(--color-clay);
  border-radius: var(--radius-sm);
  padding: 10px;
  margin: 14px 0 16px;
  text-align: center;
}

.pricing-placeholder-amount {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-clay);
}

.pricing-placeholder-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.pricing-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 22px;
  flex-grow: 1;
}

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

.pricing-disclaimer {
  max-width: 760px;
  margin: 28px auto 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 9 SEO Article Cards Grid (3/2/1) */
.seo-articles-section {
  padding: 56px 0;
}

.seo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .seo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .seo-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.article-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.article-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-clay);
  box-shadow: var(--shadow-card-hover);
}

.article-card-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-clay);
  background-color: var(--color-clay-light);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
  margin-bottom: 12px;
}

.article-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-card-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

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

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

/* Testimonials (Authentic / Visibly Sample) */
.testimonials-section {
  padding: 50px 0;
  background-color: var(--bg-inset);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.testimonial-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sample-badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted-olive);
  background-color: var(--color-muted-olive-light);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
  margin-bottom: 12px;
}

.testimonial-content {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
}

.author-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-pale-peach);
  color: var(--color-clay);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 14px;
}

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

/* Open FAQ Area (Open without enclosing every item in a card) */
.faq-section {
  padding: 56px 0;
}

.open-faq-list {
  max-width: 820px;
  margin: 0 auto;
  border-top: 1px solid var(--border-color);
}

.open-faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: 18px 0;
}

.open-faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  padding: 6px 0;
  font-family: inherit;
}

.open-faq-question:hover {
  color: var(--color-clay);
}

.faq-chevron {
  font-size: 20px;
  font-weight: 400;
  color: var(--color-clay);
  transition: transform 0.25s ease;
  line-height: 1;
}

.open-faq-item.is-active .faq-chevron {
  transform: rotate(45deg);
}

.open-faq-answer {
  display: none;
  padding: 12px 0 8px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

/* Footer */
.site-footer {
  background-color: var(--text-primary);
  color: #D5CEC8;
  padding: 56px 0 28px;
  margin-top: auto;
  font-size: 14px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .footer-top {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
  }
}

.footer-brand h4 {
  color: #FFFFFF;
  font-size: 20px;
  margin-bottom: 12px;
}

.footer-desc {
  color: #ADA49D;
  line-height: 1.6;
  max-width: 380px;
}

.footer-heading {
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

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

.footer-links a {
  color: #C3BAB3;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 13px;
  color: #948B83;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* Article & Content Page Styles */
.page-container {
  padding: 40px 0 60px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

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

.breadcrumbs a:hover {
  color: var(--color-clay);
}

.breadcrumbs span.separator {
  color: var(--border-color);
}

.article-header {
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 14px;
}

.article-content {
  max-width: 820px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 26px;
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-content h3 {
  font-size: 20px;
  margin-top: 28px;
  margin-bottom: 12px;
}

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

.article-content ul, .article-content ol {
  margin-bottom: 22px;
  padding-left: 24px;
}

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

.article-callout {
  background-color: var(--bg-inset);
  border-left: 4px solid var(--color-clay);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 15px;
}

.article-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.article-table th {
  background-color: var(--bg-secondary);
  padding: 12px 16px;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.article-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.article-table tr:last-child td {
  border-bottom: none;
}

.related-articles {
  margin-top: 50px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 18px;
}

@media (min-width: 640px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.related-item {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.related-item h4 {
  font-size: 16px;
  margin-bottom: 6px;
}

.related-item p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Accessibility & Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: 2px solid var(--color-clay);
  outline-offset: 2px;
}