/* ==========================================================================
   Modern Technology Newspaper Design System for FlashCat / 闪电猫
   Palette:
     - Warm White: #FEFDFB
     - Primary Black: #212121
     - Steel Gray: #6C7478
     - Restrained Crimson: #8D4542
     - Newsprint Rule / Border: #E5E2DC
     - Newsprint Insert / Surface: #F7F5F0
     - Newsprint Tint / Highlight: #F0EDE6
   Typography:
     - Headings: Chinese Serif Display (Noto Serif SC, Songti, SimSun, serif)
     - Body: System Sans-Serif (-apple-system, BlinkMacSystemFont, PingFang SC, Microsoft YaHei, sans-serif)
     - Code/Data: SFMono-Regular, Consolas, Menlo, monospace
     - H1: 61px desktop / 37px mobile
     - Body: 17px
   Editorial Features:
     - Column divisions, mastheads, pull quotes, large article numbers
     - Clean comparison insert, curated newspaper cards
     - Subtle headline underline, slow node pulse only, NO NEON
   ========================================================================== */

:root {
  --color-bg: #FEFDFB;
  --color-surface: #FFFFFF;
  --color-surface-dim: #F7F5F0;
  --color-surface-accent: #F0EDE6;
  --color-text-main: #212121;
  --color-text-steel: #6C7478;
  --color-text-light: #8E969B;
  --color-crimson: #8D4542;
  --color-crimson-hover: #733633;
  --color-crimson-soft: rgba(141, 69, 66, 0.08);
  --color-crimson-border: rgba(141, 69, 66, 0.25);
  
  --border-rule: #E5E2DC;
  --border-rule-strong: #212121;
  --border-rule-steel: #6C7478;
  
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", "STSong", "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;

  --h1-desktop: 61px;
  --h1-mobile: 37px;
  --font-size-body: 17px;
  --line-height-body: 1.75;
  --line-height-tight: 1.25;

  --max-width: 1240px;
  --max-width-narrow: 860px;
  --header-height: 80px;
}

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

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  color: var(--color-text-main);
  overflow-x: hidden;
  position: relative;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

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

ul, ol {
  list-style: none;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6, .font-serif {
  font-family: var(--font-serif);
  color: var(--color-text-main);
  font-weight: 700;
  line-height: var(--line-height-tight);
}

h1 {
  font-size: var(--h1-desktop);
  letter-spacing: -0.02em;
}

@media (max-width: 768px) {
  h1 {
    font-size: var(--h1-mobile);
  }
}

h2 {
  font-size: 34px;
  letter-spacing: -0.015em;
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  h2 {
    font-size: 26px;
  }
}

h3 {
  font-size: 22px;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 19px;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.25rem;
  color: var(--color-text-main);
}

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

.text-steel {
  color: var(--color-text-steel);
}

.text-crimson {
  color: var(--color-crimson);
}

.text-lead {
  font-size: 19px;
  line-height: 1.7;
  color: var(--color-text-steel);
}

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

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

/* Newspaper Hairlines & Dividers */
.newspaper-rule {
  border: 0;
  height: 1px;
  background-color: var(--border-rule);
  margin: 32px 0;
}

.newspaper-rule-double {
  border-top: 3px double var(--border-rule-strong);
  margin: 24px 0;
}

.newspaper-rule-thin {
  border-top: 1px solid var(--border-rule);
  margin: 20px 0;
}

/* Subtle Headline Underline */
.headline-underline {
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
}

.headline-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-crimson);
  opacity: 0.85;
}

/* Section Masthead */
.section-masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 2px solid var(--border-rule-strong);
  border-bottom: 1px solid var(--border-rule);
  padding: 10px 0;
  margin-bottom: 36px;
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-steel);
}

.section-masthead .masthead-tag {
  color: var(--color-crimson);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.section-masthead .masthead-tag::before {
  content: "■";
  font-size: 10px;
}

/* Newspaper Masthead Bar (Top of site) */
.newspaper-topbar {
  border-bottom: 1px solid var(--border-rule);
  background-color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-steel);
  padding: 6px 0;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.topbar-date, .topbar-weather, .topbar-edition {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Main Site Header */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 3px double var(--border-rule-strong);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.newspaper-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}

.brand-stamp {
  width: 44px;
  height: 44px;
  background-color: var(--color-crimson);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 900;
  border-radius: 2px;
  flex-shrink: 0;
}

.brand-meta {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--color-text-steel);
  letter-spacing: 0.06em;
  margin-top: 3px;
}

/* Nav Menu */
.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-main);
  padding: 6px 0;
  position: relative;
  transition: color 0.2s ease;
}

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

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-crimson);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 2px;
  border: 1px solid var(--color-crimson);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-cta-btn:hover {
  background-color: var(--color-crimson-hover);
  border-color: var(--color-crimson-hover);
  color: #FFFFFF;
}

/* Mobile Menu Toggle */
.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-rule-strong);
  padding: 8px 12px;
  border-radius: 2px;
  cursor: pointer;
  color: var(--color-text-main);
  font-size: 14px;
  font-family: var(--font-mono);
}

.mobile-menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text-main);
  margin: 4px 0;
  transition: transform 0.2s, opacity 0.2s;
}

.mobile-drawer {
  display: none;
  flex-direction: column;
  padding: 20px 24px;
  background-color: var(--color-surface-dim);
  border-bottom: 2px solid var(--border-rule-strong);
  gap: 16px;
}

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

.mobile-drawer .nav-link {
  font-size: 17px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-rule);
}

@media (max-width: 900px) {
  .header-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
}

/* Hero Section: Modern Technology Newspaper */
.hero-section {
  padding: 56px 0 64px 0;
  border-bottom: 1px solid var(--border-rule);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: stretch;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-right: 12px;
}

.hero-lead-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-crimson);
  font-weight: 700;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero-lead-badge .badge-bullet {
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-crimson);
}

.hero-title {
  margin-bottom: 20px;
}

.hero-summary {
  font-size: 18px;
  line-height: 1.75;
  color: var(--color-text-steel);
  margin-bottom: 32px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-crimson);
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 2px;
  border: 1px solid var(--color-crimson);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.btn-primary:hover {
  background-color: var(--color-crimson-hover);
  border-color: var(--color-crimson-hover);
  color: #FFFFFF;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: transparent;
  color: var(--color-text-main);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: 2px;
  border: 1px solid var(--border-rule-strong);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-secondary:hover {
  background-color: var(--color-text-main);
  color: #FFFFFF;
}

.hero-editorial-notes {
  display: flex;
  align-items: center;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-steel);
  border-top: 1px dashed var(--border-rule);
  padding-top: 16px;
  flex-wrap: wrap;
}

.hero-editorial-notes span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Hero Network Infographic Dashboard */
.hero-infographic {
  background-color: var(--color-surface-dim);
  border: 1px solid var(--border-rule-strong);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 4px 4px 0px rgba(33, 33, 33, 0.08);
}

.infographic-masthead {
  border-bottom: 1px solid var(--border-rule-strong);
  padding-bottom: 12px;
  margin-bottom: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.infographic-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-main);
}

.infographic-serial {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-steel);
}

/* SVG Route Illustration with slow node pulse */
.route-illustration {
  margin: 12px 0 18px 0;
  padding: 12px 0;
  border-top: 1px solid var(--border-rule);
  border-bottom: 1px solid var(--border-rule);
}

.route-svg {
  width: 100%;
  height: 140px;
}

/* Slow node pulse animation only - no neon glow */
@keyframes slowPulse {
  0% {
    r: 4;
    opacity: 0.9;
  }
  50% {
    r: 6.5;
    opacity: 0.4;
  }
  100% {
    r: 4;
    opacity: 0.9;
  }
}

.node-pulse-circle {
  animation: slowPulse 3.2s ease-in-out infinite;
}

.pulse-delay-1 {
  animation-delay: 0.8s;
}

.pulse-delay-2 {
  animation-delay: 1.6s;
}

.pulse-delay-3 {
  animation-delay: 2.4s;
}

/* Region List Table */
.infographic-regions {
  margin-bottom: 16px;
}

.region-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-rule);
  font-size: 13.5px;
  font-family: var(--font-sans);
}

.region-row:nth-child(even) {
  background-color: var(--color-surface-accent);
}

.region-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--color-text-main);
}

.region-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-crimson);
}

.region-role {
  color: var(--color-text-steel);
  font-size: 12.5px;
}

.region-tier {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-steel);
  border: 1px solid var(--border-rule);
  padding: 2px 6px;
  background-color: #FFFFFF;
}

.infographic-footnote {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-steel);
  line-height: 1.5;
  border-top: 1px dotted var(--border-rule);
  padding-top: 10px;
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-copy {
    padding-right: 0;
  }
}

/* Three Strengths Section */
.section-strengths {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-rule);
}

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.strength-card {
  border: 1px solid var(--border-rule);
  padding: 32px 24px;
  background-color: var(--color-surface);
  position: relative;
  display: flex;
  flex-direction: column;
}

.strength-num {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 900;
  color: var(--color-crimson);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.strength-card h3 {
  font-size: 21px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-rule);
  padding-bottom: 10px;
}

.strength-card p {
  font-size: 15.5px;
  color: var(--color-text-steel);
  line-height: 1.7;
}

@media (max-width: 860px) {
  .strengths-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* Global Nodes Section */
.section-nodes {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-rule);
  background-color: var(--color-surface-dim);
}

.nodes-intro-lead {
  max-width: 860px;
  font-size: 18px;
  line-height: 1.75;
  color: var(--color-text-steel);
  margin-bottom: 36px;
}

.nodes-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.node-feature-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-rule-strong);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
}

.node-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-rule);
  padding-bottom: 12px;
  margin-bottom: 14px;
}

.node-region-title {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text-main);
}

.node-code-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-crimson);
  font-weight: 700;
}

.node-feature-list {
  font-size: 14px;
  color: var(--color-text-steel);
  line-height: 1.6;
}

.node-feature-list li {
  margin-bottom: 8px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.node-feature-list li::before {
  content: "—";
  color: var(--color-crimson);
}

@media (max-width: 992px) {
  .nodes-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .nodes-cards-grid {
    grid-template-columns: 1fr;
  }
}

/* AI & Streaming Use Cases */
.section-usecases {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-rule);
}

.usecases-split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.usecase-editorial-column {
  border: 1px solid var(--border-rule);
  background-color: var(--color-surface);
  padding: 32px;
}

.column-header {
  border-bottom: 2px solid var(--border-rule-strong);
  padding-bottom: 14px;
  margin-bottom: 24px;
}

.column-header h3 {
  font-size: 24px;
  margin-bottom: 6px;
}

.column-header .column-subtitle {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-crimson);
  text-transform: uppercase;
}

.app-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.app-tag {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 5px 12px;
  background-color: var(--color-surface-dim);
  border: 1px solid var(--border-rule);
  color: var(--color-text-main);
  border-radius: 2px;
}

.usecase-details {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--color-text-steel);
}

.usecase-details h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text-main);
  margin-top: 18px;
  margin-bottom: 6px;
}

@media (max-width: 860px) {
  .usecases-split-grid {
    grid-template-columns: 1fr;
  }
}

/* Pricing Clean Comparison Insert */
.section-pricing {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-rule);
  background-color: var(--color-bg);
}

.pricing-newspaper-insert {
  border: 2px dashed var(--border-rule-strong);
  padding: 40px 32px;
  background-color: var(--color-surface-dim);
  position: relative;
}

.pricing-stamp {
  position: absolute;
  top: -14px;
  right: 28px;
  background-color: var(--color-crimson);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  text-transform: uppercase;
  font-weight: 700;
}

.pricing-insert-intro {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 36px auto;
}

.pricing-insert-intro h2 {
  margin-bottom: 10px;
}

.pricing-cards-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.pricing-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-rule);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.pricing-card.featured {
  border: 2px solid var(--color-crimson);
  position: relative;
}

.card-badge-top {
  position: absolute;
  top: -12px;
  left: 20px;
  background-color: var(--color-crimson);
  color: #FFFFFF;
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 2px 8px;
}

.pricing-plan-title {
  font-family: var(--font-serif);
  font-size: 21px;
  margin-bottom: 8px;
}

.pricing-tagline {
  font-size: 13.5px;
  color: var(--color-text-steel);
  margin-bottom: 18px;
  min-height: 40px;
}

.pricing-price-box {
  border-top: 1px solid var(--border-rule);
  border-bottom: 1px solid var(--border-rule);
  padding: 14px 0;
  margin-bottom: 20px;
}

.price-editorial-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-crimson);
  display: block;
  margin-bottom: 4px;
}

.price-figure {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 900;
  color: var(--color-text-main);
  line-height: 1;
}

.price-cycle {
  font-size: 14px;
  color: var(--color-text-steel);
  font-weight: normal;
}

.pricing-features-list {
  font-size: 14px;
  color: var(--color-text-main);
  line-height: 1.65;
  margin-bottom: 24px;
  flex-grow: 1;
}

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

.pricing-features-list li::before {
  content: "✓";
  color: var(--color-crimson);
  font-weight: bold;
}

.pricing-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 2px;
  text-align: center;
  border: 1px solid var(--border-rule-strong);
  color: var(--color-text-main);
  background-color: var(--color-bg);
  transition: all 0.2s ease;
}

.pricing-card.featured .pricing-btn {
  background-color: var(--color-crimson);
  color: #FFFFFF;
  border-color: var(--color-crimson);
}

.pricing-btn:hover {
  background-color: var(--color-text-main);
  color: #FFFFFF;
  border-color: var(--color-text-main);
}

.pricing-card.featured .pricing-btn:hover {
  background-color: var(--color-crimson-hover);
  border-color: var(--color-crimson-hover);
}

.pricing-disclaimer-box {
  background-color: #FFFFFF;
  border: 1px solid var(--border-rule);
  padding: 16px 20px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-steel);
  font-family: var(--font-sans);
}

.pricing-disclaimer-box strong {
  color: var(--color-crimson);
}

@media (max-width: 900px) {
  .pricing-cards-row {
    grid-template-columns: 1fr;
  }
}

/* Nine Curated Newspaper Article Cards (3 col desktop, 2 col tablet, 1 col mobile) */
.section-articles {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-rule);
}

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

/* Curated Newspaper Card */
.newspaper-article-card {
  border: 1px solid var(--border-rule);
  background-color: #FFFFFF;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.newspaper-article-card:hover {
  border-color: var(--border-rule-strong);
  box-shadow: 2px 2px 0px rgba(33, 33, 33, 0.06);
}

/* Varied Card Spans on Desktop */
.card-featured-lead {
  grid-column: span 2;
  background-color: var(--color-surface-dim);
  border-left: 4px solid var(--color-crimson);
}

.card-top-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--color-text-steel);
  border-bottom: 1px solid var(--border-rule);
  padding-bottom: 10px;
  margin-bottom: 14px;
}

.article-num {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 18px;
  color: var(--color-crimson);
}

.article-category {
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.newspaper-article-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  line-height: 1.35;
}

.card-featured-lead h3 {
  font-size: 24px;
}

.article-excerpt {
  font-size: 15px;
  color: var(--color-text-steel);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-read-link {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-crimson);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-top: 1px dashed var(--border-rule);
  padding-top: 12px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.card-read-link:hover {
  color: var(--color-text-main);
  transform: translateX(3px);
}

@media (max-width: 1024px) {
  .newspaper-articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-featured-lead {
    grid-column: span 2;
  }
}

@media (max-width: 680px) {
  .newspaper-articles-grid {
    grid-template-columns: 1fr;
  }
  .card-featured-lead {
    grid-column: span 1;
  }
}

/* Sourced Sample Testimonials */
.section-testimonials {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-rule);
  background-color: var(--color-surface-dim);
}

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

.testimonial-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-rule);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-quote {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-main);
  margin-bottom: 20px;
  position: relative;
  padding-left: 18px;
  border-left: 2px solid var(--color-crimson);
}

.testimonial-author-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-rule);
  padding-top: 12px;
  font-size: 13px;
}

.author-role {
  font-weight: 700;
  color: var(--color-text-main);
}

.author-scenario {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--color-text-steel);
}

.testimonials-note {
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-steel);
  text-align: center;
}

@media (max-width: 860px) {
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

/* FAQ Accordion Section */
.section-faq {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-rule);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-rule);
  background-color: var(--color-surface);
  transition: border-color 0.2s ease;
}

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

.faq-icon {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-crimson);
  transition: transform 0.2s ease;
}

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

.faq-answer {
  display: none;
  padding: 0 24px 20px 24px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--color-text-steel);
  border-top: 1px dotted var(--border-rule);
  padding-top: 16px;
}

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

/* Footer Section */
.site-footer {
  background-color: var(--color-surface-dim);
  border-top: 3px double var(--border-rule-strong);
  padding: 56px 0 32px 0;
  font-size: 14px;
  color: var(--color-text-steel);
}

.footer-columns-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-steel);
  margin-bottom: 20px;
}

.footer-col-header {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--color-text-main);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-rule);
  padding-bottom: 8px;
}

.footer-links-list li {
  margin-bottom: 10px;
}

.footer-links-list a {
  color: var(--color-text-steel);
  transition: color 0.2s ease;
}

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

.footer-bottom-bar {
  border-top: 1px solid var(--border-rule);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12.5px;
  font-family: var(--font-mono);
}

@media (max-width: 900px) {
  .footer-columns-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 580px) {
  .footer-columns-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Article Detail & Secondary Page Styling
   ========================================================================== */
.article-header {
  padding: 48px 0 32px 0;
  border-bottom: 1px solid var(--border-rule);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text-steel);
  margin-bottom: 20px;
}

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

.article-main-title {
  margin-bottom: 18px;
  line-height: 1.25;
}

.article-lead-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-steel);
  border-top: 1px solid var(--border-rule);
  border-bottom: 1px solid var(--border-rule);
  padding: 10px 0;
  flex-wrap: wrap;
}

.article-content-wrapper {
  padding: 48px 0 64px 0;
}

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

.article-editorial-body h2 {
  font-size: 26px;
  margin-top: 40px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-rule);
  padding-bottom: 8px;
}

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

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

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

.article-editorial-body ul {
  list-style: disc;
}

.article-editorial-body ol {
  list-style: decimal;
}

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

.article-editorial-body blockquote {
  border-left: 3px solid var(--color-crimson);
  background-color: var(--color-surface-dim);
  padding: 18px 24px;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--color-text-main);
  margin: 28px 0;
  font-style: normal;
}

.article-editorial-body code {
  font-family: var(--font-mono);
  font-size: 14.5px;
  background-color: var(--color-surface-dim);
  padding: 2px 6px;
  border: 1px solid var(--border-rule);
}

.article-editorial-body pre {
  background-color: #212121;
  color: #F7F5F0;
  padding: 20px;
  border-radius: 2px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  margin: 24px 0;
}

.article-editorial-body pre code {
  background: none;
  border: none;
  color: inherit;
  padding: 0;
}

/* Article Hero Image with Alt */
.article-featured-visual {
  margin: 32px 0;
  border: 1px solid var(--border-rule-strong);
  background-color: var(--color-surface-dim);
  padding: 12px;
}

.article-featured-visual img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border: 1px solid var(--border-rule);
}

.article-featured-visual figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-steel);
  margin-top: 8px;
  text-align: center;
}

/* Article CTA Box */
.article-commercial-cta {
  background-color: var(--color-surface-dim);
  border: 2px solid var(--color-crimson);
  padding: 32px;
  margin: 40px 0;
  text-align: center;
}

.article-commercial-cta h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.article-commercial-cta p {
  font-size: 15.5px;
  color: var(--color-text-steel);
  max-width: 640px;
  margin: 0 auto 20px auto;
}

/* Related Articles Box */
.related-articles-box {
  margin-top: 48px;
  border-top: 2px solid var(--border-rule-strong);
  padding-top: 32px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.related-card {
  border: 1px solid var(--border-rule);
  padding: 18px;
  background-color: #FFFFFF;
}

.related-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.related-card a {
  color: var(--color-crimson);
  font-size: 13.5px;
  font-weight: 600;
}

@media (max-width: 768px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}

/* Responsive refinements for mobile devices (375px, 390px, 430px) */
@media (max-width: 580px) {
  .container, .container-narrow {
    padding-left: 16px;
    padding-right: 16px;
  }
  .pricing-newspaper-insert {
    padding: 28px 16px;
  }
  .hero-infographic {
    padding: 16px 12px;
  }
  .region-row {
    font-size: 12.5px;
    padding: 6px 6px;
  }
  .region-role {
    display: none;
  }
  .topbar-weather, .topbar-edition {
    display: none;
  }
  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-cta-group a {
    width: 100%;
    text-align: center;
  }
  .btn-primary, .btn-secondary {
    width: 100%;
  }
}