/* ==========================================================================
   FlashCat 闪电猫 - Pearl & Deep Teal SaaS Design System
   Colors:
     Pearl White: #FBFCFA
     Deep Teal:   #174C4B
     Pale Seafoam:#E4F0EC
     Graphite:    #263332
   ========================================================================== */

:root {
  --color-pearl: #FBFCFA;
  --color-pearl-surface: #FFFFFF;
  --color-pearl-alt: #F4F8F6;
  --color-deep-teal: #174C4B;
  --color-deep-teal-hover: #113938;
  --color-deep-teal-dark: #0B2524;
  --color-pale-seafoam: #E4F0EC;
  --color-seafoam-border: #D1E3DC;
  --color-graphite: #263332;
  --color-graphite-muted: #536664;
  --color-graphite-light: #7E9390;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  
  --max-width: 1200px;
  --header-height: 72px;
  --transition-smooth: 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-subtle: 0 4px 20px rgba(23, 76, 75, 0.05);
  --shadow-panel: 0 8px 30px rgba(23, 76, 75, 0.08);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-pearl);
  color: var(--color-graphite);
}

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  background-color: var(--color-pearl);
  color: var(--color-graphite);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-deep-teal);
  text-decoration: none;
  transition: color var(--transition-smooth);
}

a:hover {
  color: var(--color-deep-teal-hover);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------------- Typography ---------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-graphite);
  line-height: 1.25;
}

h1 {
  font-size: 36px;
  line-height: 1.18;
}

@media (min-width: 1024px) {
  h1 {
    font-size: 59px;
    line-height: 1.12;
  }
}

h2 {
  font-size: 28px;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  h2 {
    font-size: 38px;
  }
}

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

p {
  margin-bottom: 16px;
}

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

.text-lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--color-graphite-muted);
}

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

@media (min-width: 768px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

.section {
  padding: 80px 0;
  position: relative;
}

@media (min-width: 1024px) {
  .section {
    padding: 100px 0;
  }
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-pale-seafoam);
  color: var(--color-deep-teal);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 2px;
  border: 1px solid var(--color-seafoam-border);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 3px;
  text-align: center;
  transition: all var(--transition-smooth);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-deep-teal);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--color-deep-teal-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(23, 76, 75, 0.2);
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--color-deep-teal);
  border: 1px solid var(--color-seafoam-border);
}

.btn-secondary:hover {
  background-color: var(--color-pale-seafoam);
  color: var(--color-deep-teal-hover);
  border-color: var(--color-deep-teal);
}

/* ---------------- Header & Navigation ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(251, 252, 250, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-seafoam-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 20px;
  color: var(--color-deep-teal);
  text-decoration: none;
}

.brand-logo svg {
  width: 32px;
  height: 32px;
}

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

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-graphite);
  padding: 8px 0;
  position: relative;
}

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

.nav-cta {
  display: none;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--color-graphite);
  transition: all 0.3s ease;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }
  .nav-cta {
    display: flex;
  }
  .nav-toggle {
    display: none;
  }
}

/* Mobile Nav Drawer */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-pearl);
  border-top: 1px solid var(--color-seafoam-border);
  padding: 32px 24px;
  display: none;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
  z-index: 999;
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav a {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-graphite);
  padding: 10px 0;
  border-bottom: 1px solid var(--color-seafoam-border);
}

.mobile-nav .mobile-cta {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ---------------- Hero Section ---------------- */
.hero-section {
  padding-top: 60px;
  padding-bottom: 80px;
  overflow: hidden;
}

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

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.15fr 1fr;
    gap: 56px;
  }
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-copy h1 {
  margin-bottom: 24px;
  color: var(--color-deep-teal);
}

.hero-copy .text-lead {
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
  width: 100%;
}

.hero-badges-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
  color: var(--color-graphite-muted);
}

.hero-badges-strip span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-badges-strip svg {
  color: var(--color-deep-teal);
}

/* Dashboard Visual Panel */
.dashboard-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  border-radius: 4px;
  padding: 28px;
  box-shadow: var(--shadow-panel);
  position: relative;
  overflow: hidden;
}

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

.dash-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--color-deep-teal);
}

.dash-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-deep-teal);
  background-color: var(--color-pale-seafoam);
  padding: 4px 10px;
  border-radius: 2px;
}

.dash-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-deep-teal);
}

/* Concentric Network Animation */
.network-visual-wrapper {
  position: relative;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px 0 24px 0;
  background: radial-gradient(circle, rgba(228, 240, 236, 0.4) 0%, rgba(251, 252, 250, 0) 70%);
}

.concentric-svg {
  position: absolute;
  width: 100%;
  height: 100%;
}

.pulse-ring {
  transform-origin: center;
  animation: slowPulse 8s ease-in-out infinite;
}

.pulse-ring-delayed {
  transform-origin: center;
  animation: slowPulse 8s ease-in-out 4s infinite;
}

@keyframes slowPulse {
  0% {
    opacity: 0.2;
    transform: scale(0.96);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.03);
  }
  100% {
    opacity: 0.2;
    transform: scale(0.96);
  }
}

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

.central-overview-node {
  position: relative;
  z-index: 2;
  background-color: #FFFFFF;
  border: 2px solid var(--color-deep-teal);
  padding: 12px 24px;
  border-radius: 2px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(23, 76, 75, 0.12);
}

.central-overview-node .label {
  font-size: 13px;
  color: var(--color-graphite-muted);
  display: block;
}

.central-overview-node .value {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-deep-teal);
}

.dash-regions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.dash-region-item {
  background-color: var(--color-pearl-alt);
  border: 1px solid var(--color-seafoam-border);
  padding: 12px 14px;
  border-radius: 2px;
}

.dash-region-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-graphite);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}

.dash-region-tag {
  font-size: 12px;
  color: var(--color-graphite-muted);
}

/* ---------------- Bento Advantages ---------------- */
.bento-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 1024px) {
  .bento-grid {
    grid-template-columns: 1.25fr 1fr;
    grid-template-rows: auto auto;
  }
  .bento-item-large {
    grid-row: 1 / 3;
  }
}

.bento-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  border-radius: 3px;
  padding: 36px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-subtle);
  transition: border-color var(--transition-smooth);
}

.bento-card:hover {
  border-color: var(--color-deep-teal);
}

.bento-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-pale-seafoam);
  color: var(--color-deep-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  margin-bottom: 24px;
}

.bento-title {
  font-size: 22px;
  margin-bottom: 12px;
  color: var(--color-deep-teal);
}

.bento-desc {
  color: var(--color-graphite-muted);
  font-size: 16px;
  margin-bottom: 20px;
}

.bento-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 15px;
  color: var(--color-graphite);
}

.bento-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.bento-checklist svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-deep-teal);
}

/* ---------------- Region Selector ---------------- */
.region-tabs-wrapper {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  border-radius: 4px;
  padding: 32px;
  box-shadow: var(--shadow-panel);
}

.region-tabs-nav {
  display: flex;
  gap: 8px;
  border-bottom: 2px solid var(--color-pale-seafoam);
  padding-bottom: 12px;
  overflow-x: auto;
}

.region-tab-btn {
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-graphite-muted);
  border-radius: 2px;
  transition: all var(--transition-smooth);
  white-space: nowrap;
}

.region-tab-btn:hover {
  color: var(--color-deep-teal);
  background-color: var(--color-pale-seafoam);
}

.region-tab-btn.is-active {
  color: #FFFFFF;
  background-color: var(--color-deep-teal);
}

.region-pane {
  display: none;
  padding-top: 28px;
}

.region-pane.is-active {
  display: block;
}

.region-pane-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .region-pane-content {
    grid-template-columns: 1.2fr 1fr;
    gap: 36px;
    align-items: center;
  }
}

.region-facts-box {
  background-color: var(--color-pearl-alt);
  border: 1px solid var(--color-seafoam-border);
  padding: 24px;
  border-radius: 2px;
}

.region-facts-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 15px;
}

.region-facts-list li strong {
  color: var(--color-deep-teal);
  display: inline-block;
  min-width: 100px;
}

/* ---------------- Two-Panel Narrative (AI & Streaming) ---------------- */
.narrative-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 1024px) {
  .narrative-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.narrative-panel {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  border-top: 4px solid var(--color-deep-teal);
  border-radius: 2px;
  padding: 36px 32px;
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
}

.narrative-panel h3 {
  color: var(--color-deep-teal);
  font-size: 24px;
  margin-bottom: 16px;
}

.practical-cases {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.case-item {
  padding: 14px 16px;
  background-color: var(--color-pearl-alt);
  border-left: 3px solid var(--color-deep-teal);
  border-radius: 0 2px 2px 0;
}

.case-item-title {
  font-weight: 700;
  font-size: 15px;
  color: var(--color-deep-teal);
  margin-bottom: 4px;
}

.case-item-desc {
  font-size: 14px;
  color: var(--color-graphite-muted);
  line-height: 1.55;
  margin-bottom: 0;
}

/* ---------------- Pricing Section ---------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 40px;
}

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

.pricing-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  border-radius: 3px;
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-subtle);
  position: relative;
}

.pricing-card.is-featured {
  border-color: var(--color-deep-teal);
  box-shadow: 0 10px 32px rgba(23, 76, 75, 0.12);
  transform: translateY(-4px);
}

.featured-tag {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-deep-teal);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: 2px;
  letter-spacing: 0.05em;
}

.plan-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-graphite);
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 14px;
  color: var(--color-graphite-muted);
  min-height: 42px;
  margin-bottom: 20px;
}

.plan-tier-badge {
  display: inline-block;
  background-color: var(--color-pale-seafoam);
  color: var(--color-deep-teal);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 2px;
  margin-bottom: 12px;
}

.plan-price-box {
  margin: 12px 0 16px 0;
  padding: 14px 0;
  border-top: 1px solid var(--color-seafoam-border);
  border-bottom: 1px solid var(--color-seafoam-border);
}

.plan-price-amount {
  font-size: 34px;
  font-weight: 800;
  color: var(--color-deep-teal);
  line-height: 1.1;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price-amount .currency {
  font-size: 20px;
  font-weight: 700;
}

.plan-price-amount .period {
  font-size: 14px;
  color: var(--color-graphite-muted);
  font-weight: 500;
}

.plan-price-sub {
  font-size: 13px;
  color: var(--color-graphite-muted);
  margin-top: 6px;
}

.plan-coupon-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: #B45309;
  background-color: #FEF3C7;
  border: 1px solid #FCD34D;
  padding: 2px 8px;
  border-radius: 2px;
  margin-top: 6px;
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 24px 0 32px 0;
  font-size: 14px;
}

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

.plan-features svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-deep-teal);
}

.pricing-editorial-note {
  background-color: var(--color-pale-seafoam);
  border: 1px dashed var(--color-seafoam-border);
  padding: 16px 20px;
  border-radius: 2px;
  font-size: 13px;
  color: var(--color-graphite-muted);
  text-align: center;
  max-width: 820px;
  margin: 32px auto 0 auto;
}

/* ---------------- SEO Articles Reading Grid ---------------- */
.seo-reading-section {
  background-color: var(--color-pearl-alt);
  border-top: 1px solid var(--color-seafoam-border);
  border-bottom: 1px solid var(--color-seafoam-border);
}

.seo-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

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

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

.seo-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  border-radius: 2px;
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-smooth);
}

.seo-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-deep-teal);
  box-shadow: 0 6px 20px rgba(23, 76, 75, 0.08);
}

.seo-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-graphite-light);
  margin-bottom: 10px;
}

.seo-card-tag {
  color: var(--color-deep-teal);
  font-weight: 600;
}

.seo-card-title {
  font-size: 18px;
  margin-bottom: 10px;
  line-height: 1.4;
}

.seo-card-title a {
  color: var(--color-graphite);
}

.seo-card-title a:hover {
  color: var(--color-deep-teal);
}

.seo-card-desc {
  font-size: 14px;
  color: var(--color-graphite-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}

.seo-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-deep-teal);
  border-top: 1px solid var(--color-pearl-alt);
  padding-top: 12px;
}

/* ---------------- Testimonials ---------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.testimonial-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  border-radius: 2px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-body {
  font-size: 15px;
  color: var(--color-graphite-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  position: relative;
}

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

.author-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-pale-seafoam);
  color: var(--color-deep-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-graphite);
}

.author-role {
  font-size: 12px;
  color: var(--color-graphite-light);
}

/* ---------------- FAQ Accordion ---------------- */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  border-radius: 2px;
  overflow: hidden;
  transition: border-color var(--transition-smooth);
}

.faq-item[open] {
  border-color: var(--color-deep-teal);
}

.faq-question {
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-graphite);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

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

.faq-icon {
  width: 18px;
  height: 18px;
  color: var(--color-deep-teal);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 20px 24px;
  color: var(--color-graphite-muted);
  font-size: 15px;
  line-height: 1.65;
}

/* ---------------- Article & Content Pages ---------------- */
.article-page-header {
  padding: 48px 0 32px 0;
  background-color: var(--color-pearl-alt);
  border-bottom: 1px solid var(--color-seafoam-border);
  margin-bottom: 48px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-graphite-light);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.breadcrumb-nav a {
  color: var(--color-graphite-muted);
}

.breadcrumb-nav a:hover {
  color: var(--color-deep-teal);
}

.article-content {
  max-width: 820px;
  margin: 0 auto;
}

.article-content h2 {
  font-size: 26px;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--color-deep-teal);
  border-bottom: 1px solid var(--color-pale-seafoam);
  padding-bottom: 8px;
}

.article-content h3 {
  font-size: 20px;
  margin-top: 28px;
  margin-bottom: 12px;
  color: var(--color-graphite);
}

.article-content ul, 
.article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
  color: var(--color-graphite-muted);
}

.article-content li {
  margin-bottom: 8px;
  line-height: 1.65;
}

.article-callout {
  background-color: var(--color-pale-seafoam);
  border-left: 4px solid var(--color-deep-teal);
  padding: 18px 20px;
  margin: 24px 0;
  border-radius: 0 2px 2px 0;
  font-size: 15px;
}

.article-callout p:last-child {
  margin-bottom: 0;
}

.article-related-links {
  background-color: #FFFFFF;
  border: 1px solid var(--color-seafoam-border);
  padding: 24px;
  border-radius: 2px;
  margin: 48px 0;
}

.article-related-links h4 {
  font-size: 17px;
  color: var(--color-deep-teal);
  margin-bottom: 12px;
}

.article-related-links ul {
  margin-bottom: 0;
  padding-left: 20px;
}

/* ---------------- Footer ---------------- */
.site-footer {
  background-color: var(--color-graphite);
  color: #FFFFFF;
  padding: 64px 0 32px 0;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

.footer-brand p {
  color: #B4C6C3;
  font-size: 14px;
  margin-top: 14px;
  line-height: 1.6;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 16px;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}

.footer-col a {
  color: #B4C6C3;
}

.footer-col 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: 16px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #8DA6A2;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    text-align: left;
  }
}

.footer-external-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.footer-external-links a {
  color: #B4C6C3;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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