/* ==========================================================================
   TAG 机场 (TAG / xxx) 官方评测与节点导航 - 全局样式表
   Visual Style: Ceramic Green Tiles (陶瓷绿瓷砖质感)
   Colors:
     - Warm White: #FCFAF5
     - Bottle Green: #225044
     - Celadon: #A6C6B7
     - Sand: #EAE2D5
   ========================================================================== */

:root {
  --color-warm-white: #FCFAF5;
  --color-bottle-green: #225044;
  --color-bottle-green-dark: #173b32;
  --color-bottle-green-hover: #1c443a;
  --color-celadon: #A6C6B7;
  --color-celadon-light: #E8F2EC;
  --color-celadon-soft: #c4dcd0;
  --color-sand: #EAE2D5;
  --color-sand-light: #F7F3EB;
  --color-sand-dark: #D8CCC0;
  --color-surface-card: #FFFFFF;
  --color-text-main: #1D372F;
  --color-text-body: #2B453C;
  --color-text-muted: #577065;
  --color-border-tile: #DFD7CA;
  --color-border-accent: #A6C6B7;

  /* Typography */
  --font-heading: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Spacing & Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
  --shadow-tile: 0 4px 14px rgba(34, 80, 68, 0.05), 0 1px 3px rgba(34, 80, 68, 0.03);
  --shadow-tile-hover: 0 10px 25px rgba(34, 80, 68, 0.1), 0 2px 6px rgba(34, 80, 68, 0.04);
  --shadow-tile-active: 0 0 0 2px var(--color-bottle-green), 0 8px 24px rgba(34, 80, 68, 0.12);

  --container-max: 1240px;
  --container-narrow: 860px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-warm-white);
  color: var(--color-text-body);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.68;
  color: var(--color-text-body);
  background-color: var(--color-warm-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-bottle-green);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 60px;
  line-height: 1.15;
}

h2 {
  font-size: 34px;
  margin-bottom: 1rem;
}

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

p {
  margin-bottom: 1.1rem;
}

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

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

a:hover {
  color: var(--color-bottle-green-dark);
}

a:focus-visible, button:focus-visible {
  outline: 3px solid var(--color-bottle-green);
  outline-offset: 2px;
}

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

ul, ol {
  padding-left: 1.4rem;
  margin-bottom: 1.2rem;
}

li {
  margin-bottom: 0.4rem;
}

/* Monospace Badges & Labels */
.mono-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-bottle-green);
  background-color: var(--color-celadon-light);
  border: 1px solid var(--color-celadon);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-bottle-green);
}

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

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

.section {
  padding-top: 88px;
  padding-bottom: 88px;
}

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

.section-head.text-left {
  text-align: left;
  margin-left: 0;
}

.section-head h2 {
  font-size: 36px;
  color: var(--color-bottle-green);
  margin-top: 10px;
  margin-bottom: 14px;
}

.section-head p {
  font-size: 17px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-bottle-green);
  color: #FFFFFF;
  border-color: var(--color-bottle-green);
  box-shadow: 0 4px 12px rgba(34, 80, 68, 0.18);
}

.btn-primary:hover {
  background-color: var(--color-bottle-green-dark);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(34, 80, 68, 0.25);
}

.btn-secondary {
  background-color: var(--color-warm-white);
  color: var(--color-bottle-green);
  border-color: var(--color-sand-dark);
}

.btn-secondary:hover {
  background-color: var(--color-sand-light);
  border-color: var(--color-bottle-green);
}

.btn-celadon {
  background-color: var(--color-celadon-light);
  color: var(--color-bottle-green);
  border-color: var(--color-celadon);
}

.btn-celadon:hover {
  background-color: var(--color-celadon);
  color: var(--color-bottle-green-dark);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(252, 250, 245, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-sand);
  transition: border-color 0.2s ease;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 19px;
  color: var(--color-bottle-green);
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background-color: var(--color-bottle-green);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  display: block;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-desktop a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-body);
}

.nav-desktop a:hover {
  color: var(--color-bottle-green);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-sand-dark);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-bottle-green);
  font-size: 14px;
  font-family: var(--font-mono);
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 74px;
  left: 0;
  width: 100%;
  height: calc(100vh - 74px);
  background-color: rgba(252, 250, 245, 0.98);
  backdrop-filter: blur(8px);
  padding: 32px 24px;
  z-index: 999;
  overflow-y: auto;
  border-top: 1px solid var(--color-sand);
}

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

.mobile-menu-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 28px;
}

.mobile-menu-links a {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-bottle-green);
  display: block;
  padding: 8px 0;
  border-bottom: 1px dashed var(--color-sand);
}

/* ==========================================================================
   Hero Section - Ceramic Dashboard & Connective Routes
   ========================================================================== */
.hero-section {
  padding-top: 70px;
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 85% 20%, rgba(166, 198, 183, 0.15) 0%, transparent 60%);
}

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

.hero-copy {
  max-width: 640px;
}

.hero-title {
  font-size: 60px;
  line-height: 1.15;
  color: var(--color-bottle-green);
  margin-bottom: 22px;
  word-break: break-word;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.68;
  color: var(--color-text-body);
  margin-bottom: 32px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 30px;
}

.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-muted);
}

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

.dot-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-bottle-green);
  display: inline-block;
}

/* Ceramic Dashboard: Irregular tiles connected by routes */
.ceramic-dashboard {
  position: relative;
  width: 100%;
  min-height: 460px;
  background-color: var(--color-sand-light);
  border: 2px solid var(--color-sand);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: inset 0 2px 6px rgba(34, 80, 68, 0.03), var(--shadow-tile);
}

/* Route SVG overlay connecting tiles */
.dashboard-routes-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.dashboard-routes-svg path {
  fill: none;
  stroke: var(--color-celadon);
  stroke-width: 2;
  stroke-dasharray: 4, 4;
}

/* Ceramic Tile layout */
.tiles-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 95px;
  gap: 14px;
}

.ceramic-tile {
  background-color: #FFFFFF;
  border: 1.5px solid var(--color-border-tile);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-tile);
  position: relative;
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease, background-color 0.4s ease;
  user-select: none;
}

/* Irregular positioning spans */
.tile-span-4x1 {
  grid-column: span 4;
  grid-row: span 1;
}
.tile-span-2x1 {
  grid-column: span 2;
  grid-row: span 1;
}
.tile-span-3x2 {
  grid-column: span 3;
  grid-row: span 2;
}
.tile-span-3x1 {
  grid-column: span 3;
  grid-row: span 1;
}
.tile-span-6x1 {
  grid-column: span 6;
  grid-row: span 1;
}

.tile-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tile-value {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-bottle-green);
}

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

/* Only ONE tile highlight active at a time, animated slowly */
.ceramic-tile.tile-active {
  border-color: var(--color-bottle-green);
  background-color: #FCFAF5;
  box-shadow: 0 0 0 2px var(--color-celadon), var(--shadow-tile-hover);
  transform: translateY(-2px);
}

.ceramic-tile.tile-active .tile-status-dot {
  background-color: var(--color-bottle-green);
  box-shadow: 0 0 0 4px var(--color-celadon-light);
}

.tile-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-sand-dark);
  transition: background-color 0.5s ease, box-shadow 0.5s ease;
}

/* ==========================================================================
   Section: Benefits (One Large Statement + Two Compact Tiles)
   ========================================================================== */
.benefits-section {
  background-color: var(--color-warm-white);
  border-top: 1px solid var(--color-sand);
  border-bottom: 1px solid var(--color-sand);
}

.benefits-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: stretch;
}

/* Large statement card */
.benefit-statement-card {
  background: linear-gradient(135deg, #FFFFFF 0%, var(--color-sand-light) 100%);
  border: 2px solid var(--color-sand);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-tile);
}

.statement-title {
  font-size: 28px;
  line-height: 1.35;
  color: var(--color-bottle-green);
  margin-bottom: 20px;
}

.statement-body {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-body);
  margin-bottom: 24px;
}

.statement-meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--color-sand);
}

.statement-meta-item h4 {
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--color-bottle-green);
  margin-bottom: 4px;
}

.statement-meta-item p {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-muted);
}

/* Two compact tiles stacked */
.compact-tiles-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.compact-tile {
  background-color: #FFFFFF;
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-lg);
  padding: 32px 30px;
  box-shadow: var(--shadow-tile);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.compact-tile h3 {
  font-size: 20px;
  color: var(--color-bottle-green);
  margin-bottom: 12px;
}

.compact-tile p {
  font-size: 15px;
  color: var(--color-text-body);
  line-height: 1.6;
}

/* ==========================================================================
   Section: Global Nodes (Open Region List)
   ========================================================================== */
.nodes-section {
  background-color: var(--color-sand-light);
}

.nodes-disclaimer {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: -30px;
  margin-bottom: 36px;
  text-align: center;
  font-family: var(--font-mono);
}

.region-list-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-tile);
  overflow-x: auto;
}

.node-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 15px;
  min-width: 680px;
}

.node-table th {
  background-color: #FAF7F0;
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-bottle-green);
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-sand);
  font-weight: 700;
}

.node-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--color-sand-light);
  color: var(--color-text-body);
  vertical-align: middle;
}

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

.node-table tr:hover td {
  background-color: #FDFBF7;
}

.region-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--color-bottle-green);
}

.region-flag {
  font-size: 16px;
}

.status-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  background-color: var(--color-celadon-light);
  color: var(--color-bottle-green);
  border: 1px solid var(--color-celadon);
}

/* ==========================================================================
   Section: AI & Streaming (Wide Narrative Bands)
   ========================================================================== */
.narrative-bands-section {
  background-color: var(--color-warm-white);
}

.narrative-band {
  background-color: #FFFFFF;
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-lg);
  padding: 44px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-tile);
  position: relative;
  overflow: hidden;
}

.narrative-band::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background-color: var(--color-bottle-green);
}

.narrative-band.band-streaming::before {
  background-color: var(--color-celadon);
}

.narrative-band-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.narrative-band-head h3 {
  font-size: 26px;
  color: var(--color-bottle-green);
  margin-bottom: 8px;
}

.narrative-band-head p {
  color: var(--color-text-muted);
  font-size: 15px;
  max-width: 680px;
}

.apps-pill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.app-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--color-sand-light);
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-bottle-green);
  transition: all 0.2s ease;
}

.app-pill:hover {
  border-color: var(--color-bottle-green);
  background-color: #FFFFFF;
  transform: translateY(-1px);
}

.app-pill .pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-bottle-green);
}

.band-feature-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px dashed var(--color-sand);
}

.band-feature-item h4 {
  font-size: 16px;
  color: var(--color-bottle-green);
  margin-bottom: 6px;
}

.band-feature-item p {
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.6;
}

/* ==========================================================================
   Section: Pricing (Neat Comparison Grid)
   ========================================================================== */
.pricing-section {
  background-color: var(--color-sand-light);
  border-top: 1px solid var(--color-sand);
  border-bottom: 1px solid var(--color-sand);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background-color: #FFFFFF;
  border: 1.5px solid var(--color-sand);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-tile);
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-tile-hover);
}

/* Exactly one 推荐套餐 tier */
.pricing-card.pricing-featured {
  border: 2px solid var(--color-bottle-green);
  background-color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(34, 80, 68, 0.12);
  transform: scale(1.02);
}

.featured-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-bottle-green);
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
  box-shadow: 0 2px 6px rgba(34, 80, 68, 0.25);
  white-space: nowrap;
}

.plan-header {
  margin-bottom: 20px;
}

.plan-name {
  font-size: 20px;
  color: var(--color-bottle-green);
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  min-height: 38px;
}

.plan-pricing-box {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-sand);
}

.plan-price-num {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 800;
  color: var(--color-bottle-green);
}

.plan-price-unit {
  font-size: 13px;
  color: var(--color-text-muted);
}

.plan-traffic {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-bottle-green);
  margin-top: 6px;
}

.plan-features-list {
  list-style: none;
  padding: 0;
  margin-bottom: 28px;
  flex: 1;
}

.plan-features-list li {
  font-size: 14px;
  color: var(--color-text-body);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}

.plan-features-list .check-icon {
  color: var(--color-bottle-green);
  font-weight: bold;
}

.pricing-disclaimer {
  text-align: center;
  margin-top: 36px;
  font-size: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

/* ==========================================================================
   Section: Articles (Text-first Editorial Cards)
   Shown after pricing in 3 desktop / 2 tablet / 1 mobile columns
   ========================================================================== */
.articles-section {
  background-color: var(--color-warm-white);
}

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

.article-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-tile);
  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-bottle-green);
  box-shadow: var(--shadow-tile-hover);
}

.article-card-top {
  margin-bottom: 18px;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-muted);
}

.article-card-title {
  font-size: 19px;
  line-height: 1.4;
  color: var(--color-bottle-green);
  margin-bottom: 12px;
}

.article-card-title a {
  color: var(--color-bottle-green);
}

.article-card-title a:hover {
  color: var(--color-bottle-green-dark);
  text-decoration: underline;
}

.article-card-excerpt {
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.65;
  margin-bottom: 16px;
}

.article-card-footer {
  padding-top: 16px;
  border-top: 1px dashed var(--color-sand);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-read-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-bottle-green);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-read-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Section: Testimonials (Real or Marked-Sample)
   ========================================================================== */
.testimonials-section {
  background-color: var(--color-sand-light);
  border-top: 1px solid var(--color-sand);
  border-bottom: 1px solid var(--color-sand);
}

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

.testimonial-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-tile);
}

.testimonial-quote {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--color-text-body);
  margin-bottom: 20px;
  position: relative;
  font-style: normal;
}

.testimonial-author-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--color-sand);
}

.author-info h4 {
  font-size: 14px;
  color: var(--color-bottle-green);
  margin-bottom: 2px;
}

.author-info span {
  font-size: 12px;
  color: var(--color-text-muted);
}

.sample-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 6px;
  background-color: var(--color-sand-light);
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Section: FAQ
   ========================================================================== */
.faq-section {
  background-color: var(--color-warm-white);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-tile);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-bottle-green);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  font-size: 18px;
  font-weight: bold;
  color: var(--color-bottle-green);
  transition: transform 0.25s ease;
}

.faq-answer {
  padding: 0 24px 22px 24px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-body);
}

.faq-answer p {
  margin-bottom: 0.8rem;
}

/* HTML details support */
details.faq-item summary {
  padding: 20px 24px;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-bottle-green);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

details.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 700;
  color: var(--color-bottle-green);
}

details.faq-item[open] summary::after {
  content: "−";
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: #F7F3EB;
  border-top: 1.5px solid var(--color-sand);
  padding-top: 64px;
  padding-bottom: 40px;
  font-size: 14px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand h3 {
  font-size: 19px;
  color: var(--color-bottle-green);
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--color-text-muted);
  line-height: 1.6;
  font-size: 14px;
  margin-bottom: 16px;
}

.footer-col h4 {
  font-size: 15px;
  color: var(--color-bottle-green);
  margin-bottom: 16px;
  text-transform: uppercase;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  padding: 0;
}

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

.footer-links a {
  color: var(--color-text-body);
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-bottle-green);
  text-decoration: underline;
}

.footer-disclaimer-box {
  background-color: #FFFFFF;
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 32px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--color-sand);
  font-size: 13px;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Article Pages Specific Layout
   ========================================================================== */
.article-header-section {
  padding-top: 48px;
  padding-bottom: 36px;
  background-color: var(--color-warm-white);
  border-bottom: 1px solid var(--color-sand);
}

.breadcrumb-nav {
  margin-bottom: 20px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
}

.breadcrumb-nav a {
  color: var(--color-bottle-green);
}

.breadcrumb-nav span {
  margin: 0 6px;
}

.article-main-title {
  font-size: 44px;
  line-height: 1.25;
  color: var(--color-bottle-green);
  margin-bottom: 18px;
}

.article-header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-muted);
}

.article-content-body {
  padding-top: 48px;
  padding-bottom: 64px;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--color-text-body);
}

.article-content-body h2 {
  font-size: 28px;
  color: var(--color-bottle-green);
  margin-top: 48px;
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 1.5px solid var(--color-sand);
}

.article-content-body h3 {
  font-size: 20px;
  color: var(--color-bottle-green);
  margin-top: 32px;
  margin-bottom: 14px;
}

.article-lead {
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text-main);
  background-color: var(--color-sand-light);
  border-left: 4px solid var(--color-bottle-green);
  padding: 20px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 32px;
}

.article-diagram-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-sand);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 36px 0;
  text-align: center;
  box-shadow: var(--shadow-tile);
}

.article-diagram-card svg {
  margin: 0 auto 12px auto;
  max-width: 100%;
}

.diagram-caption {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-muted);
}

.callout-box {
  background-color: var(--color-celadon-light);
  border: 1px solid var(--color-celadon);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0;
}

.callout-box h4 {
  font-size: 16px;
  color: var(--color-bottle-green);
  margin-bottom: 8px;
}

.code-block {
  background-color: #202b27;
  color: #E2ECE6;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  padding: 20px;
  border-radius: var(--radius-sm);
  margin: 24px 0;
  overflow-x: auto;
}

.article-cta-box {
  background: linear-gradient(135deg, var(--color-bottle-green) 0%, var(--color-bottle-green-dark) 100%);
  color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 40px;
  margin: 48px 0;
  text-align: center;
}

.article-cta-box h3 {
  color: #FFFFFF;
  font-size: 26px;
  margin-bottom: 12px;
}

.article-cta-box p {
  color: var(--color-celadon-light);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto 24px auto;
}

.related-articles-section {
  padding-top: 48px;
  padding-bottom: 64px;
  border-top: 1px solid var(--color-sand);
  background-color: var(--color-sand-light);
}

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

/* ==========================================================================
   Responsive Breakpoints: 1440, 1024, 768, 430, 390, 375
   ========================================================================== */

/* Tablet & Smaller Laptops (<= 1024px) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .benefits-layout {
    grid-template-columns: 1fr;
  }

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

  .pricing-card.pricing-featured {
    transform: none;
  }

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

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

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

/* Tablet Portrait & Large Phones (<= 768px) */
@media (max-width: 768px) {
  h1, .hero-title {
    font-size: 37px;
    line-height: 1.2;
  }

  .article-main-title {
    font-size: 30px;
  }

  .section {
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .section-head h2 {
    font-size: 28px;
  }

  .nav-desktop, .nav-actions .btn-secondary {
    display: none;
  }

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

  .band-feature-columns {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
    margin-left: auto;
    margin-right: auto;
  }

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

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

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

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .tiles-container {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: auto;
  }

  .tile-span-4x1, .tile-span-2x1, .tile-span-3x2, .tile-span-3x1, .tile-span-6x1 {
    grid-column: span 2;
    grid-row: auto;
  }
}

/* Mobile Small (<= 430px, 390px, 375px) */
@media (max-width: 430px) {
  .container, .container-narrow {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-cta-group {
    flex-direction: column;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .statement-meta-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .benefit-statement-card {
    padding: 28px 20px;
  }

  .narrative-band {
    padding: 24px 20px;
  }
}

/* ==========================================================================
   Accessibility & Reduced Motion Support
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .ceramic-tile {
    transition: none !important;
    transform: none !important;
  }

  .ceramic-tile.tile-active {
    transform: none !important;
  }
}