/* ==========================================================================
   MITCEVPN - PHOTON CIRCUIT SYSTEM DESIGN SYSTEM
   Light Future Technology | Circuit Routing | Network Core | Data Bus
   Clean Commercial Interface | Precision Engineering | Premium White Technology
   ========================================================================== */

:root {
  /* Surfaces & Backgrounds */
  --bg-main: #FFFFFF;
  --bg-second: #F5F8FC;
  --bg-third: #EDF3F9;
  --bg-surface: #F8FAFD;
  --bg-surface-hover: #F0F5FA;

  /* Typography Colors */
  --text-primary: #121A24;
  --text-body: #526171;
  --text-secondary: #7D8A98;
  --text-light: #9DAEBF;

  /* Brand Accents */
  --electric-blue: #1769FF;
  --electric-blue-hover: #0F56D9;
  --photon-blue: #50A8FF;
  --cyan: #56C7E8;
  --signal-mint: #10B981;
  --signal-mint-light: #A7F3D0;
  --deep-blue: #17324D;

  /* Borders & Circuit Lines */
  --border-color: #DDE6EF;
  --border-subtle: rgba(23, 105, 255, 0.12);
  --circuit-line: rgba(23, 105, 255, 0.18);
  --circuit-glow: rgba(23, 105, 255, 0.28);

  /* Fonts */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, Menlo, Monaco, "Liberation Mono", monospace;

  /* Layout */
  --header-height: 68px;
  --container-max: 1200px;
  --container-narrow: 840px;
  --radius-xs: 3px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --transition: 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-main);
  color: var(--text-primary);
}

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

main {
  flex: 1 0 auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition);
}

ul, ol {
  list-style: none;
}

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

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

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--electric-blue);
  outline-offset: 2px;
}

/* Typography Utility */
.mono-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--electric-blue);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.mono-label::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--electric-blue);
  box-shadow: 0 0 6px var(--circuit-glow);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Section Header Structure */
.section-header {
  margin-bottom: 2.75rem;
  position: relative;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--electric-blue);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::after {
  content: "";
  height: 1px;
  width: 48px;
  background: var(--circuit-line);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.375rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  letter-spacing: -0.02em;
  white-space: pre-line;
}

.section-desc {
  margin-top: 0.875rem;
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 640px;
}

/* Circuit Line Accent Element */
.circuit-line-dec {
  position: relative;
  height: 1px;
  background: var(--circuit-line);
  width: 100%;
  margin: 1.5rem 0;
}

.circuit-line-dec::before {
  content: "";
  position: absolute;
  left: 10%;
  top: -3px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--electric-blue);
  box-shadow: 0 0 6px var(--circuit-glow);
}

/* ==========================================================================
   HEADER: PHOTON SYSTEM BAR
   ========================================================================== */
.photon-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition);
}

.header-circuit-trace {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(23, 105, 255, 0.1) 15%, 
    rgba(23, 105, 255, 0.6) 40%, 
    rgba(23, 105, 255, 0.2) 70%, 
    transparent 100%
  );
  pointer-events: none;
}

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

.brand-group {
  display: flex;
  align-items: baseline;
  gap: 0.625rem;
  text-decoration: none;
}

.brand-title {
  font-family: var(--font-sans);
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--electric-blue);
  background: rgba(23, 105, 255, 0.08);
  padding: 0.125rem 0.4375rem;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(23, 105, 255, 0.2);
}

.photon-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--text-body);
  position: relative;
  padding: 0.375rem 0;
  transition: color var(--transition);
}

.nav-link:hover, .nav-link.is-active {
  color: var(--electric-blue);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--electric-blue);
  transition: width var(--transition);
}

.nav-link:hover::after, .nav-link.is-active::after {
  width: 100%;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.system-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal-mint);
  box-shadow: 0 0 6px rgba(16, 185, 129, 0.5);
}

/* Primary Button */
.btn-photon-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--electric-blue);
  color: #FFFFFF !important;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5625rem 1.125rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--electric-blue);
  box-shadow: 0 2px 8px rgba(23, 105, 255, 0.25);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn-photon-primary:hover {
  background: var(--electric-blue-hover);
  border-color: var(--electric-blue-hover);
  box-shadow: 0 4px 14px rgba(23, 105, 255, 0.35);
  transform: translateY(-1px);
}

.btn-photon-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-surface);
  color: var(--text-primary) !important;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5625rem 1.125rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

.btn-photon-secondary:hover {
  background: var(--bg-second);
  border-color: var(--electric-blue);
  color: var(--electric-blue) !important;
  transform: translateY(-1px);
}

.btn-photon-link {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--electric-blue);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5625rem 0.5rem;
  transition: gap var(--transition), color var(--transition);
}

.btn-photon-link:hover {
  color: var(--electric-blue-hover);
  gap: 0.625rem;
}

/* Mobile Nav Toggle */
.menu-toggle {
  display: none;
  padding: 0.5rem;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  background: var(--bg-surface);
}

.mobile-menu-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(16px);
  padding: 1.5rem;
  overflow-y: auto;
  border-top: 1px solid var(--border-color);
  z-index: 99;
}

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

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-item a:hover {
  color: var(--electric-blue);
}

.mobile-menu-cta {
  margin-top: 1.5rem;
}

/* ==========================================================================
   HERO: CIRCUIT STAGE HERO
   ========================================================================== */
.circuit-hero {
  position: relative;
  min-height: 620px;
  max-height: 720px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 0;
  background: radial-gradient(circle at 50% 40%, #FFFFFF 0%, var(--bg-surface) 60%, var(--bg-second) 100%);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.hero-circuit-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.hero-circuit-svg {
  width: 100%;
  height: 100%;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.hero-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--electric-blue);
  background: #FFFFFF;
  padding: 0.3125rem 0.875rem;
  border-radius: 99px;
  border: 1px solid rgba(23, 105, 255, 0.2);
  box-shadow: 0 2px 8px rgba(23, 105, 255, 0.08);
  margin-bottom: 1.25rem;
}

.hero-brand {
  font-size: clamp(2.5rem, 5.5vw, 3.875rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.hero-slogan {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--deep-blue);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0.875rem;
}

/* Single H1 for SEO */
.hero-h1 {
  font-size: clamp(1.125rem, 2.2vw, 1.375rem);
  font-weight: 500;
  color: var(--electric-blue);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero-desc {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-body);
  max-width: 700px;
  margin: 0 auto 2rem auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

/* Hero Central Core Node */
.hero-core-widget {
  margin: 0 auto;
  width: 160px;
  height: 160px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.core-outer-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px dashed rgba(23, 105, 255, 0.35);
  animation: coreRotate 28s linear infinite;
}

.core-middle-ring {
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 16px rgba(23, 105, 255, 0.1);
}

.core-inner-node {
  position: relative;
  z-index: 3;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 1.5px solid var(--electric-blue);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(23, 105, 255, 0.2);
}

.core-inner-node .core-tag {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  color: var(--electric-blue);
  font-weight: 700;
}

.core-inner-node .core-name {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 2px;
}

.core-photon-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--electric-blue);
  box-shadow: 0 0 8px var(--electric-blue);
}

.dot-top { top: -3px; left: calc(50% - 3px); }
.dot-bottom { bottom: -3px; left: calc(50% - 3px); }
.dot-left { left: -3px; top: calc(50% - 3px); }
.dot-right { right: -3px; top: calc(50% - 3px); }

@keyframes coreRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   SECTION 01: NETWORK CORE ARCHITECTURE
   ========================================================================== */
.section-core-arch {
  padding: 5rem 0;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.core-arch-wrapper {
  position: relative;
  height: 520px;
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.core-arch-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.arch-center-core {
  position: relative;
  z-index: 3;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 1.5px solid var(--electric-blue);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(23, 105, 255, 0.14);
  text-align: center;
  padding: 1rem;
}

.arch-center-core .arch-core-brand {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.arch-center-core .arch-core-sub {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--electric-blue);
  letter-spacing: 0.12em;
  margin-top: 0.25rem;
}

.arch-center-core .arch-core-status {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--signal-mint);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* 4 Core Endpoints - Precision Engineering Labels, NOT heavy cards */
.arch-endpoint {
  position: absolute;
  z-index: 2;
  width: 240px;
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.arch-endpoint:hover {
  border-color: var(--electric-blue);
  box-shadow: 0 4px 16px rgba(23, 105, 255, 0.08);
}

.arch-endpoint-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--electric-blue);
  letter-spacing: 0.14em;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.arch-endpoint-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.arch-endpoint-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.endpoint-tl { top: 24px; left: 24px; }
.endpoint-tr { top: 24px; right: 24px; }
.endpoint-bl { bottom: 24px; left: 24px; }
.endpoint-br { bottom: 24px; right: 24px; }

/* ==========================================================================
   SECTION 02: CIRCUIT ROUTES
   ========================================================================== */
.section-circuit-routes {
  padding: 5rem 0;
  background: var(--bg-second);
  border-bottom: 1px solid var(--border-color);
}

.route-sequence-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 980px;
  margin: 0 auto;
}

.route-item {
  display: grid;
  grid-template-columns: 80px 1fr 2fr;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 1.75rem;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.route-item:hover {
  border-color: rgba(23, 105, 255, 0.4);
  box-shadow: 0 4px 20px rgba(23, 105, 255, 0.06);
}

.route-num {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.route-track {
  position: relative;
  height: 2px;
  background: var(--circuit-line);
  display: flex;
  align-items: center;
}

.route-photon-node {
  position: absolute;
  left: 15%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--electric-blue);
  box-shadow: 0 0 8px var(--electric-blue);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.route-item:hover .route-photon-node {
  transform: translateX(32px);
}

.route-info {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.route-region-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--deep-blue);
}

.route-node-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.route-node-pill {
  font-size: 0.8125rem;
  color: var(--text-body);
  background: var(--bg-surface);
  padding: 0.1875rem 0.5rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-color);
}

/* ==========================================================================
   SECTION 03: DEVICE BUS
   ========================================================================== */
.section-device-bus {
  padding: 5rem 0;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-color);
}

.bus-container {
  max-width: 1040px;
  margin: 0 auto;
  position: relative;
}

.bus-trunk {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-xs);
  position: relative;
  margin: 4.5rem 0;
}

.bus-trunk-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--circuit-line);
}

.bus-trunk-label {
  position: relative;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--electric-blue);
  background: #FFFFFF;
  padding: 0.25rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
}

.bus-nodes-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.bus-nodes-top {
  margin-bottom: -3rem;
}

.bus-node-card {
  padding: 1.25rem;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  position: relative;
  transition: border-color var(--transition), transform var(--transition);
}

.bus-node-card:hover {
  border-color: var(--electric-blue);
  transform: translateY(-2px);
}

.bus-tap-line {
  position: absolute;
  left: 50%;
  width: 2px;
  background: var(--circuit-line);
}

.bus-tap-down {
  bottom: -48px;
  height: 48px;
}

.bus-tap-up {
  top: -48px;
  height: 48px;
}

.bus-tap-node {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--electric-blue);
  left: -2px;
}

.bus-node-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.375rem;
}

.bus-node-os {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
}

.bus-node-type {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
}

.bus-node-sub {
  font-size: 0.8125rem;
  color: var(--text-body);
  line-height: 1.5;
}

/* ==========================================================================
   SECTION 04: AI PROCESS FLOW
   ========================================================================== */
.section-ai-process {
  padding: 5rem 0;
  background: var(--bg-second);
  border-bottom: 1px solid var(--border-color);
}

.process-flow-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  position: relative;
  max-width: 1040px;
  margin: 0 auto 3rem auto;
}

.process-step-item {
  position: relative;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.5rem 1.25rem;
  transition: border-color var(--transition);
}

.process-step-item:hover {
  border-color: var(--electric-blue);
}

.process-step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--electric-blue);
  letter-spacing: 0.08em;
}

.step-connector-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--photon-blue);
}

.step-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--deep-blue);
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.8125rem;
  color: var(--text-body);
  line-height: 1.5;
}

/* AI Target Tools Badges */
.ai-tools-group {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.ai-tool-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--deep-blue);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-xs);
}

.section-footer-link {
  text-align: center;
  margin-top: 2rem;
}

/* ==========================================================================
   SECTION 05: MEDIA CHANNEL
   ========================================================================== */
.section-media-channel {
  padding: 5rem 0;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-color);
}

.media-channel-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 920px;
  margin: 0 auto;
}

.media-channel-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1.375rem 1.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), background-color var(--transition);
  position: relative;
  overflow: hidden;
}

.media-channel-row:hover {
  background: #FFFFFF;
  border-color: var(--electric-blue);
}

.media-channel-index {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-light);
  line-height: 1;
  transition: color var(--transition);
}

.media-channel-row:hover .media-channel-index {
  color: var(--electric-blue);
}

.media-channel-body {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.media-channel-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.media-channel-meta {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.media-channel-type {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--deep-blue);
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-xs);
}

/* ==========================================================================
   SECTION 06: CIRCUIT PLAN SELECTOR
   ========================================================================== */
.section-pricing-selector {
  padding: 5rem 0;
  background: var(--bg-second);
  border-bottom: 1px solid var(--border-color);
}

.circuit-selector-wrap {
  max-width: 920px;
  margin: 0 auto;
}

/* Top Circuit Tabs Track */
.selector-tabs-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  margin-bottom: 2.5rem;
  padding: 0 1rem;
}

.selector-tabs-line {
  position: absolute;
  left: 2rem;
  right: 2rem;
  top: 50%;
  height: 2px;
  background: var(--circuit-line);
  z-index: 1;
}

.selector-tab-btn {
  position: relative;
  z-index: 2;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  padding: 0.625rem 1.5rem;
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition);
  cursor: pointer;
}

.tab-photon-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-secondary);
  transition: all var(--transition);
}

.selector-tab-btn:hover {
  border-color: var(--electric-blue);
  color: var(--electric-blue);
}

.selector-tab-btn.is-active {
  background: var(--electric-blue);
  color: #FFFFFF;
  border-color: var(--electric-blue);
  box-shadow: 0 4px 14px rgba(23, 105, 255, 0.3);
}

.selector-tab-btn.is-active .tab-photon-dot {
  background: #FFFFFF;
  box-shadow: 0 0 6px #FFFFFF;
}

/* Detail Spec Area - Clean Technical Specification block */
.plan-detail-card {
  background: #FFFFFF;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 200px 1fr 220px;
  align-items: center;
  gap: 2.5rem;
  box-shadow: 0 8px 30px rgba(18, 26, 36, 0.04);
  position: relative;
}

.plan-detail-card.plan-recommended {
  border-color: var(--electric-blue);
}

.plan-spec-left {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  border-right: 1px solid var(--border-color);
  padding-right: 1.5rem;
}

.plan-code-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--electric-blue);
}

.plan-spec-traffic {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.plan-spec-unit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
}

.plan-spec-middle {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.plan-title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.plan-name {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--text-primary);
}

.plan-tag-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  padding: 0.1875rem 0.5rem;
  border-radius: var(--radius-xs);
  background: rgba(23, 105, 255, 0.08);
  color: var(--electric-blue);
  border: 1px solid rgba(23, 105, 255, 0.2);
}

.plan-badge-rec {
  background: rgba(16, 185, 129, 0.1);
  color: var(--signal-mint);
  border-color: rgba(16, 185, 129, 0.3);
}

.plan-feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.plan-feat-item {
  font-size: 0.8125rem;
  color: var(--text-body);
  background: var(--bg-surface);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-color);
}

.plan-spec-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1rem;
}

.plan-price-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.plan-price-period {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Fallback: If JS is disabled or during indexing, show all plans */
.plan-panel {
  display: none;
}

.plan-panel.is-active {
  display: block;
}

.no-js .plan-panel {
  display: block !important;
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   SECTION 07: DATA LIBRARY (BLOG)
   ========================================================================== */
.section-data-library {
  padding: 5rem 0;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-color);
}

.data-library-list {
  display: flex;
  flex-direction: column;
  max-width: 1040px;
  margin: 0 auto;
  border-top: 1px solid var(--border-color);
}

.data-record-item {
  display: grid;
  grid-template-columns: 80px 1fr 180px;
  align-items: center;
  gap: 2rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition);
}

.data-record-item:hover {
  background-color: var(--bg-surface);
}

.data-record-id {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-light);
  line-height: 1;
  transition: color var(--transition);
}

.data-record-item:hover .data-record-id {
  color: var(--electric-blue);
}

.data-record-main {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.data-record-cat {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--electric-blue);
  font-weight: 600;
}

.data-record-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.data-record-title a:hover {
  color: var(--electric-blue);
}

.data-record-summary {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.data-record-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.data-record-open-link {
  color: var(--electric-blue);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* ==========================================================================
   SECTION 08: SYSTEM NOTES
   ========================================================================== */
.section-system-notes {
  padding: 5rem 0;
  background: var(--bg-second);
  border-bottom: 1px solid var(--border-color);
}

.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1040px;
  margin: 0 auto;
}

.note-box {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.75rem 1.5rem;
  position: relative;
  transition: border-color var(--transition);
}

.note-box:hover {
  border-color: var(--electric-blue);
}

.note-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--electric-blue);
  margin-bottom: 0.5rem;
}

.note-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.note-content {
  font-size: 0.875rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* ==========================================================================
   SECTION 09: DIAGNOSTIC QUERY (FAQ)
   ========================================================================== */
.section-diagnostic-faq {
  padding: 5rem 0;
  background: var(--bg-main);
  border-bottom: 1px solid var(--border-color);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 860px;
  margin: 0 auto;
}

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  user-select: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  list-style: none;
}

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

.faq-tag-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--electric-blue);
  margin-right: 0.75rem;
}

.faq-icon-cross {
  font-size: 1.25rem;
  color: var(--text-secondary);
  transition: transform var(--transition);
}

.faq-item[open] .faq-icon-cross {
  transform: rotate(45deg);
  color: var(--electric-blue);
}

.faq-answer {
  padding: 0 1.5rem 1.25rem 1.5rem;
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.65;
  border-top: 1px solid var(--bg-second);
  padding-top: 1rem;
}

/* ==========================================================================
   FOOTER: LIGHT TECHNOLOGY FOOTER
   ========================================================================== */
.photon-footer {
  background: var(--bg-third);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  position: relative;
}

.footer-circuit-top {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(23, 105, 255, 0.4) 30%, 
    rgba(23, 105, 255, 0.1) 80%, 
    transparent 100%
  );
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-logo {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.footer-brand-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 320px;
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--deep-blue);
  margin-bottom: 0.25rem;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links-list a {
  font-size: 0.875rem;
  color: var(--text-body);
}

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

.footer-ext-recommend {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.footer-bottom-bar {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* ==========================================================================
   ARTICLE / READER PAGES (PHOTON READER)
   ========================================================================== */
.reader-hero {
  padding: 4rem 0 3rem 0;
  background: var(--bg-second);
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

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

.breadcrumb-sep {
  color: var(--border-color);
}

.reader-h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.reader-lead {
  font-size: 1.125rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.reader-meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.reader-body-wrap {
  padding: 4rem 0;
  background: #FFFFFF;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #364454;
}

/* GEO Quick Answer Box */
.quick-answer {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--electric-blue);
  border-radius: var(--radius-sm);
  padding: 1.75rem 2rem;
  margin: 2rem 0 2.5rem 0;
}

.quick-answer span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--electric-blue);
  font-weight: 700;
  display: block;
  margin-bottom: 0.5rem;
}

.quick-answer h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.quick-answer p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-body);
  margin: 0;
}

/* Data Index (TOC) */
.data-index-box {
  background: var(--bg-second);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.5rem 2rem;
  margin: 2.5rem 0;
}

.data-index-title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--deep-blue);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.data-index-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.data-index-list a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--text-body);
}

.data-index-list a:hover {
  color: var(--electric-blue);
}

.data-index-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--electric-blue);
  font-weight: 600;
}

/* Markdown/Article Prose Styles */
.article-content h2 {
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin: 3rem 0 1rem 0;
  letter-spacing: -0.01em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--deep-blue);
  line-height: 1.35;
  margin: 2rem 0 0.75rem 0;
}

.article-content p {
  margin-bottom: 1.5rem;
}

.article-content ul, .article-content ol {
  margin: 1.25rem 0 1.5rem 1.5rem;
}

.article-content ul {
  list-style: disc;
}

.article-content ol {
  list-style: decimal;
}

.article-content li {
  margin-bottom: 0.5rem;
}

/* Accessible HTML Table */
.article-table-wrap {
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

.data-table th {
  background: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--deep-blue);
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-body);
}

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

.data-table tr:hover td {
  background: var(--bg-surface);
}

/* Callout Box */
.tech-callout {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.9375rem;
  color: var(--text-body);
}

.tech-callout-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--electric-blue);
  margin-bottom: 0.5rem;
}

/* Inline In-Article CTA Banner */
.article-cta-box {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-second) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 2.25rem;
  margin: 3rem 0;
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.article-cta-box p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 1.5rem auto;
}

/* Category Directory Styling */
.category-hero {
  padding: 4rem 0 3rem 0;
  background: var(--bg-second);
  border-bottom: 1px solid var(--border-color);
}

.category-lead {
  font-size: 1.125rem;
  color: var(--text-body);
  max-width: 720px;
  margin-top: 0.75rem;
}

/* ==========================================================================
   404 ERROR PAGE STYLES
   ========================================================================== */
.error-page-wrap {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1.5rem;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 6rem;
  font-weight: 800;
  color: var(--electric-blue);
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 0.75rem;
}

.error-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.error-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 2rem auto;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES (375, 390, 430, 768, 1024, 1440)
   ========================================================================== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  
  .core-arch-wrapper {
    height: auto;
    flex-direction: column;
    gap: 2rem;
  }
  
  .core-arch-svg {
    display: none;
  }
  
  .arch-endpoint {
    position: static;
    width: 100%;
    max-width: 480px;
  }
  
  .process-flow-track {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .photon-nav, .system-tag {
    display: none;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .circuit-hero {
    min-height: auto;
    max-height: none;
    padding: 3rem 0;
  }
  
  .hero-core-widget {
    width: 120px;
    height: 120px;
  }
  
  .core-inner-node {
    width: 70px;
    height: 70px;
  }
  
  .route-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding: 1.25rem;
  }
  
  .route-track {
    display: none;
  }
  
  .bus-trunk {
    margin: 2rem 0;
  }
  
  .bus-nodes-row {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
  
  .bus-tap-line {
    display: none;
  }
  
  .bus-nodes-top {
    margin-bottom: 0;
  }
  
  .process-flow-track {
    grid-template-columns: 1fr;
  }
  
  .media-channel-row {
    grid-template-columns: 50px 1fr;
    gap: 1rem;
  }
  
  .media-channel-type {
    grid-column: span 2;
    justify-self: start;
  }
  
  .plan-detail-card {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1.5rem;
  }
  
  .plan-spec-left {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding-right: 0;
    padding-bottom: 1rem;
  }
  
  .plan-spec-right {
    align-items: flex-start;
  }
  
  .selector-tabs-bar {
    overflow-x: auto;
    padding-bottom: 0.75rem;
    justify-content: flex-start;
    gap: 0.75rem;
  }
  
  .selector-tabs-line {
    display: none;
  }
  
  .data-record-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .data-record-meta {
    align-items: flex-start;
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
  }
  
  .notes-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-bottom-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

/* Mobile Small Devices: 375, 390, 430 */
@media (max-width: 480px) {
  .hero-brand {
    font-size: 2.25rem;
  }
  
  .hero-slogan {
    font-size: 1.625rem;
  }
  
  .bus-nodes-row {
    grid-template-columns: 1fr;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-cta-group a {
    width: 100%;
  }
}

/* Reduced Motion Support */
@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;
  }
  .core-outer-ring {
    animation: none;
  }
}