/* ==========================================================================
   SIGNAL TRANSIT NETWORK - CORE DESIGN SYSTEM
   Brand: 疾风云 (JIFENGYUN)
   Theme: Signal Transit Network / International Metro & Airport Wayfinding
   ========================================================================== */

:root {
  /* Surface & Background */
  --bg-primary: #FAF8F2;
  --bg-secondary: #F4F1E8;
  --bg-tertiary: #ECE9E0;
  --bg-dark: #16181A;
  --bg-dark-surface: #202326;
  --surface-card: #FFFFFF;
  --surface-elevated: #FFFDF9;

  /* Typography */
  --text-primary: #151719;
  --text-body: #44484B;
  --text-secondary: #767B7D;
  --text-muted: #959B9E;
  --text-inverse: #FAF8F2;

  /* Transit Line Colors */
  --route-yellow: #F4C542; /* Route A - Asia / Main Express */
  --route-yellow-soft: #FFF5D6;
  --route-blue: #2468A2;   /* Route B - Americas */
  --route-blue-soft: #E4F0FA;
  --route-red: #E64A3C;    /* Route C - Europe / Alert */
  --route-red-soft: #FDECE9;
  --route-green: #3A8265;  /* Route D - Oceania / Active */
  --route-green-soft: #EAF4EE;

  /* Transit Signage Accents */
  --transit-black: #16181A;
  --border-color: #CDCDC7;
  --border-light: #E2E0D8;
  --border-dark: #373B3F;

  /* Typography Stacks */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;

  /* Spacing & Layout */
  --container-max: 1240px;
  --article-max: 820px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --header-height: 72px;

  /* Shadows - Crisp architectural lines over blurry glows */
  --shadow-sm: 0 1px 3px rgba(22, 24, 26, 0.05);
  --shadow-md: 0 4px 12px rgba(22, 24, 26, 0.06);
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.68;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font: inherit;
}

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

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

/* Transit Wayfinding Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(250, 248, 242, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--transit-black);
  height: var(--header-height);
}

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

.brand-sign {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  background-color: var(--transit-black);
  color: var(--route-yellow);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 1px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.brand-badge .station-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--route-yellow);
  display: inline-block;
}

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

.brand-main {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-primary);
  line-height: 1.1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* Wayfinding Navigation */
.wayfinding-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.nav-link .route-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.nav-link:hover {
  background-color: var(--bg-tertiary);
  color: var(--transit-black);
}

.nav-link.active {
  background-color: var(--transit-black);
  color: #FFF;
}

.nav-link.active .route-num {
  color: var(--route-yellow);
}

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

/* Commercial Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  line-height: 1.2;
  border: 1px solid transparent;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.85rem;
}

.btn-primary {
  background-color: var(--transit-black);
  color: #FFF;
  border-color: var(--transit-black);
  box-shadow: 2px 2px 0px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
  background-color: #2D3135;
  transform: translateY(-1px);
  box-shadow: 3px 3px 0px rgba(0, 0, 0, 0.4);
}

.btn-primary .arrow {
  color: var(--route-yellow);
  font-weight: 800;
}

.btn-yellow {
  background-color: var(--route-yellow);
  color: var(--transit-black);
  border-color: #D6A828;
  font-weight: 800;
}

.btn-yellow:hover {
  background-color: #E2B22E;
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-dark);
}

.btn-outline:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--transit-black);
}

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

/* Mobile Menu Panel */
.mobile-nav-panel {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background-color: var(--bg-primary);
  border-bottom: 2px solid var(--transit-black);
  padding: 20px 24px;
  z-index: 999;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.mobile-nav-panel.is-open {
  display: block;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.mobile-nav-links .nav-link {
  padding: 12px 16px;
  font-size: 1.05rem;
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
}

/* Hero Section */
.hero-section {
  padding: 56px 0 64px;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-wayfinding-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.line-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.5px;
}

.line-badge.line-central {
  background-color: var(--transit-black);
  color: var(--route-yellow);
}

.line-badge.line-asia {
  background-color: var(--route-yellow);
  color: var(--transit-black);
}

.line-badge.line-global {
  background-color: var(--route-blue);
  color: #FFF;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.status-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--route-green);
  animation: pulse-ring 2s infinite ease-out;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title .title-accent {
  color: var(--transit-black);
  border-bottom: 4px solid var(--route-yellow);
  display: inline;
}

.hero-lead {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 30px;
  background-color: rgba(255, 255, 255, 0.7);
  padding: 16px 20px;
  border-left: 4px solid var(--transit-black);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

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

.hero-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-top: 1px dashed var(--border-color);
  padding-top: 18px;
}

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

.meta-item strong {
  color: var(--text-primary);
}

/* Hero Network Board (Right Side Visual) */
.transit-network-board {
  background-color: var(--transit-black);
  color: #FFF;
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
  border: 2px solid #2C3035;
  position: relative;
}

.board-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #33383E;
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.board-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--route-yellow);
  display: flex;
  align-items: center;
  gap: 8px;
}

.board-code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #8C9398;
}

.network-svg-container {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.board-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid #33383E;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #8C9398;
}

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

.legend-line {
  display: inline-block;
  width: 14px;
  height: 3px;
  border-radius: 1px;
}

/* Section Common */
.section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-alt {
  background-color: var(--bg-secondary);
}

.section-header {
  margin-bottom: 44px;
}

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

.section-waymark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-body);
  line-height: 1.7;
}

/* Route Directory (Overview) */
.route-directory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.route-directory-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-top: 4px solid var(--transit-black);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.route-directory-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.route-directory-card.route-01 { border-top-color: var(--route-yellow); }
.route-directory-card.route-02 { border-top-color: var(--route-blue); }
.route-directory-card.route-03 { border-top-color: var(--route-red); }
.route-directory-card.route-04 { border-top-color: var(--route-green); }

.directory-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.directory-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.directory-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-body);
  border-top: 1px solid var(--border-light);
  padding-top: 12px;
}

.directory-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.directory-item .bullet {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

/* Global Routes Section */
.transit-route-system {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.route-box {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}

.route-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.route-line-label {
  display: flex;
  align-items: center;
  gap: 10px;
}

.route-badge {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.route-badge.asia { background-color: var(--route-yellow); color: var(--transit-black); }
.route-badge.americas { background-color: var(--route-blue); color: #FFF; }
.route-badge.europe { background-color: var(--route-red); color: #FFF; }
.route-badge.oceania { background-color: var(--route-green); color: #FFF; }

.route-box-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stations-diagram {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 20px;
  position: relative;
  padding-left: 20px;
}

.stations-diagram::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 6px;
  width: 4px;
  border-radius: 2px;
}

.route-box.asia .stations-diagram::before { background-color: var(--route-yellow); }
.route-box.americas .stations-diagram::before { background-color: var(--route-blue); }
.route-box.europe .stations-diagram::before { background-color: var(--route-red); }
.route-box.oceania .stations-diagram::before { background-color: var(--route-green); }

.station-node {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.station-bullet {
  position: absolute;
  left: -20px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--surface-card);
  border: 3px solid var(--transit-black);
  z-index: 2;
}

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

.station-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.station-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.station-name {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.station-subtext {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.route-semantic-prose {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-color);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-body);
}

/* Terminal Connection (Device Support) */
.terminals-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.terminal-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
}

.terminal-card:hover {
  border-color: var(--transit-black);
  box-shadow: var(--shadow-md);
}

.terminal-header {
  margin-bottom: 16px;
}

.terminal-code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.terminal-os {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 4px;
}

.terminal-clients {
  font-size: 0.85rem;
  color: var(--text-body);
  margin-bottom: 20px;
  line-height: 1.6;
}

.terminal-clients strong {
  color: var(--text-primary);
}

.terminal-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--transit-black);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-top: 1px solid var(--border-light);
  padding-top: 12px;
}

.terminal-link:hover {
  color: var(--route-blue);
}

/* Destination Board (AI & Streaming) */
.destination-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.destination-panel {
  background-color: var(--surface-card);
  border: 2px solid var(--transit-black);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.board-signage-top {
  background-color: var(--transit-black);
  color: #FFF;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.board-signage-title {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--route-yellow);
}

.board-signage-gate {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #8C9398;
}

.destination-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.destination-table th {
  background-color: var(--bg-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-align: left;
  padding: 10px 18px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  letter-spacing: 0.5px;
}

.destination-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-body);
}

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

.destination-table tr:hover td {
  background-color: var(--bg-primary);
}

.dest-id {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--transit-black);
  font-size: 0.8rem;
}

.dest-name {
  font-weight: 700;
  color: var(--text-primary);
}

.dest-nodes {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--route-blue);
  background-color: var(--route-blue-soft);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.dest-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--route-green);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Passes Section (Pricing) */
.passes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.pass-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all 0.15s ease;
}

.pass-card:hover {
  border-color: var(--transit-black);
  box-shadow: var(--shadow-md);
}

.pass-card.featured {
  border: 2px solid var(--transit-black);
  background-color: #FFFEFA;
  box-shadow: 0 8px 24px rgba(244, 197, 66, 0.25);
  transform: translateY(-4px);
}

.pass-badge-top {
  position: absolute;
  top: -12px;
  left: 20px;
  background-color: var(--route-yellow);
  color: var(--transit-black);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid #D6A828;
  letter-spacing: 0.5px;
}

.pass-header {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 16px;
}

.pass-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.pass-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 2px;
}

.pass-pricing-block {
  margin: 16px 0;
}

.pass-price {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--transit-black);
  line-height: 1;
  font-family: var(--font-mono);
}

.pass-cycle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-left: 4px;
}

.pass-traffic {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--route-blue);
  background-color: var(--route-blue-soft);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-top: 10px;
}

.pass-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 20px 0 28px;
  font-size: 0.875rem;
  color: var(--text-body);
}

.pass-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pass-feature-item .check {
  color: var(--route-green);
  font-weight: 800;
}

.pass-cta {
  width: 100%;
}

/* Travel Information / Guides (Blog Hub) */
.guides-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 32px;
}

.guide-featured-card {
  background-color: var(--surface-card);
  border: 2px solid var(--transit-black);
  border-radius: var(--radius-sm);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.guide-badge-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.guide-category-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  background-color: var(--transit-black);
  color: var(--route-yellow);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.guide-reading-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.guide-featured-title {
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.guide-featured-title a:hover {
  color: var(--route-blue);
}

.guide-featured-desc {
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 24px;
}

.guide-footer-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-light);
  padding-top: 18px;
}

.guide-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Guides Schedule List */
.guides-schedule-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guide-schedule-item {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: all 0.15s ease;
}

.guide-schedule-item:hover {
  border-color: var(--transit-black);
  background-color: var(--surface-elevated);
}

.schedule-route-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  background-color: var(--bg-tertiary);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.schedule-content {
  flex: 1;
}

.schedule-category {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.schedule-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-top: 2px;
}

.schedule-title a:hover {
  color: var(--route-blue);
}

.schedule-action {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--transit-black);
  white-space: nowrap;
}

/* Travel Notes (User Notes) */
.travel-notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.travel-note-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.note-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.note-id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.note-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.note-body {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-body);
  font-style: normal;
}

/* Transit Information Desk (FAQ) */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.15s ease;
}

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

.faq-summary {
  padding: 18px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  background-color: var(--surface-card);
}

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

.faq-indicator {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-indicator {
  transform: rotate(45deg);
  color: var(--transit-black);
}

.faq-content {
  padding: 0 24px 20px;
  color: var(--text-body);
  line-height: 1.75;
  font-size: 0.98rem;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

.faq-content p {
  margin-bottom: 12px;
}

.faq-content p:last-child {
  margin-bottom: 0;
}

/* Transit Terminus (Footer) */
.site-footer {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  padding: 64px 0 32px;
  border-top: 3px solid var(--route-yellow);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-brand-title {
  font-size: 1.6rem;
  font-weight: 900;
  color: #FFF;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand-sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--route-yellow);
  letter-spacing: 1.5px;
}

.footer-desc {
  font-size: 0.88rem;
  color: #A0A6AA;
  line-height: 1.65;
  max-width: 340px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--route-yellow);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
  border-bottom: 1px solid #33383E;
  padding-bottom: 8px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
  color: #B0B7BC;
}

.footer-links a:hover {
  color: #FFF;
  padding-left: 2px;
}

.footer-partners {
  border-top: 1px solid #2B3036;
  border-bottom: 1px solid #2B3036;
  padding: 20px 0;
  margin-bottom: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.partners-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #8C9398;
  letter-spacing: 1px;
}

.partners-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
}

.partners-links a {
  color: #D2D7DC;
}

.partners-links a:hover {
  color: var(--route-yellow);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #767B7D;
}

/* ==========================================================================
   ARTICLE & PROSE SYSTEM
   ========================================================================== */

.article-page {
  padding: 40px 0 80px;
}

/* Transit Breadcrumb */
.transit-breadcrumb {
  margin-bottom: 24px;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.breadcrumb-item a {
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

.breadcrumb-item a:hover {
  color: var(--transit-black);
}

.breadcrumb-separator {
  color: var(--border-color);
  font-weight: 700;
}

.breadcrumb-item.current {
  color: var(--transit-black);
  font-weight: 700;
}

/* Article Header */
.article-header {
  margin-bottom: 36px;
  border-bottom: 2px solid var(--transit-black);
  padding-bottom: 24px;
}

.article-badge-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.article-title {
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.article-lead {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 20px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-light);
  padding-top: 12px;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* GEO Quick Answer Box */
.quick-answer {
  background-color: #FFFDF5;
  border: 2px solid var(--route-yellow);
  border-left: 6px solid var(--transit-black);
  border-radius: var(--radius-sm);
  padding: 22px 24px;
  margin-bottom: 36px;
  box-shadow: var(--shadow-sm);
}

.quick-answer-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--transit-black);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.quick-answer-title::before {
  content: "▶";
  color: var(--route-yellow);
  font-size: 0.85rem;
}

.quick-answer p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 0;
}

/* Table of Contents */
.toc-box {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin-bottom: 40px;
}

.toc-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--transit-black);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.92rem;
}

.toc-item a {
  color: var(--text-body);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.toc-item a:hover {
  color: var(--route-blue);
  text-decoration: underline;
}

/* Article Body Prose */
.prose {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-body);
}

.prose h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 44px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
  position: relative;
}

.prose h2::before {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--transit-black);
}

.prose h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 32px 0 14px;
}

.prose p {
  margin-bottom: 20px;
}

.prose ul, .prose ol {
  margin: 0 0 24px 24px;
}

.prose ul {
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 8px;
  padding-left: 4px;
}

.prose strong {
  color: var(--text-primary);
}

/* Transit Comparison Table */
.transit-table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--surface-card);
}

.transit-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.transit-table th {
  background-color: var(--bg-secondary);
  font-weight: 700;
  color: var(--text-primary);
  padding: 12px 16px;
  border-bottom: 2px solid var(--border-color);
}

.transit-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-body);
}

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

.transit-table tr:hover td {
  background-color: var(--bg-primary);
}

/* Transit Steps Box */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 24px 0;
  counter-reset: transit-step;
}

.step-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  counter-increment: transit-step;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--transit-black);
  color: var(--route-yellow);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.step-content p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Article CTA Box */
.article-cta-box {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border: 2px solid var(--transit-black);
  border-radius: var(--radius-sm);
  padding: 28px;
  margin: 40px 0;
  text-align: center;
}

.article-cta-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.article-cta-desc {
  font-size: 0.95rem;
  color: var(--text-body);
  max-width: 560px;
  margin: 0 auto 20px;
}

/* Related Guides */
.related-guides-section {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 2px solid var(--transit-black);
}

.related-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.related-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.related-card:hover {
  border-color: var(--transit-black);
}

.related-card-category {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.related-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 12px;
}

.related-card-title a:hover {
  color: var(--route-blue);
}

.related-card-link {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--transit-black);
}

/* Category Index Pages */
.category-hero {
  padding: 48px 0 36px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.category-intro-box {
  background-color: var(--surface-card);
  border-left: 4px solid var(--transit-black);
  padding: 18px 22px;
  margin: 18px 0 0;
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.75;
}

.category-articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 40px 0;
}

/* Responsive Breakpoints */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .route-directory-grid,
  .terminals-grid,
  .passes-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  .wayfinding-nav {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-title {
    font-size: 2rem;
  }

  .transit-route-system,
  .destination-board,
  .travel-notes-grid,
  .related-grid,
  .category-articles-grid {
    grid-template-columns: 1fr;
  }

  .route-directory-grid,
  .terminals-grid,
  .passes-grid {
    grid-template-columns: 1fr;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}