/* ==========================================================================
   闪连 (Midnight Network) - Infrastructure SaaS Stylesheet
   Pure Native CSS3 | Dark Minimalism | Infrastructure Dashboard
   ========================================================================== */

:root {
  --bg-primary: #080D16;
  --bg-secondary: #101826;
  --bg-card: #151E2D;
  --bg-card-hover: #1A2639;
  --bg-card-alt: #131B2A;
  --text-primary: #F4F7FC;
  --text-secondary: #A0ADC1;
  --text-muted: #64748B;
  --accent-cyan: #56D9E7;
  --accent-blue: #638BFF;
  --accent-purple: #9580F7;
  --accent-green: #10B981;
  --accent-amber: #F59E0B;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.14);
  --border-glow: rgba(86, 217, 231, 0.35);

  --font-family: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow-cyan: 0 0 24px rgba(86, 217, 231, 0.2);
  --shadow-glow-blue: 0 0 28px rgba(99, 139, 255, 0.25);

  --header-height: 72px;
  --container-max: 1200px;
  --container-narrow: 880px;

  --transition-fast: 0.18s ease;
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  position: relative;
}

/* Subtle Technical Grid Background */
.tech-grid-bg {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(rgba(99, 139, 255, 0.08) 1px, transparent 1px),
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 139, 255, 0.12), transparent);
  background-size: 32px 32px, 100% 100%;
  background-position: 0 0, 0 0;
  pointer-events: none;
  z-index: 0;
}

/* Links & Media */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

button {
  cursor: pointer;
  background: none;
  border: none;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* Section Header Typography */
.section {
  padding: 96px 0;
  position: relative;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(99, 139, 255, 0.1);
  border: 1px solid rgba(99, 139, 255, 0.25);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.section-tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

.section-title {
  font-size: clamp(1.85rem, 3.2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: clamp(0.95rem, 1.2vw, 1.125rem);
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.7;
}

.text-center {
  text-align: center;
}

.center-block {
  margin-left: auto;
  margin-right: auto;
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, var(--text-primary) 20%, var(--accent-cyan) 65%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-alt {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 50%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  min-height: 44px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #44C7D8 0%, #4D76ED 100%);
  color: #FFFFFF;
  box-shadow: var(--shadow-sm), 0 0 16px rgba(86, 217, 231, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--shadow-glow-cyan);
  background: linear-gradient(135deg, #56D9E7 0%, #638BFF 100%);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-cyan);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.btn-link:hover {
  color: var(--text-primary);
  gap: 10px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  background: rgba(8, 13, 22, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-normal), background-color var(--transition-normal);
}

.site-header.is-scrolled {
  background: rgba(8, 13, 22, 0.92);
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.brand-logo svg {
  width: 34px;
  height: 34px;
}

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent-cyan);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(8, 13, 22, 0.98);
  backdrop-filter: blur(20px);
  padding: 24px;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  z-index: 99;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
}

.mobile-nav-drawer.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  list-style: none;
}

.mobile-nav-link {
  display: block;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus {
  color: var(--accent-cyan);
}

.mobile-nav-cta {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding-top: calc(var(--header-height) + 48px);
  padding-bottom: 72px;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 55% 45%;
  align-items: center;
  gap: 40px;
}

.hero-content {
  max-width: 620px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(86, 217, 231, 0.08);
  border: 1px solid rgba(86, 217, 231, 0.22);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.hero-badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse-dot 2.4s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.5; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.15); }
}

.hero-title {
  font-size: clamp(2.35rem, 4.4vw, 3.75rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.hero-features-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  margin-bottom: 36px;
  list-style: none;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
}

.hero-feature-icon {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.hero-disclaimer {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.775rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Network Control Center Dashboard (Hero Right)
   ========================================================================== */
.dashboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(99, 139, 255, 0.08);
  overflow: hidden;
}

.dashboard-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-blue), transparent);
}

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

.dashboard-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dashboard-title {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.dashboard-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--accent-green);
}

.status-dot-green {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse-dot 2s infinite ease-in-out;
}

.dashboard-badge-sim {
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

/* SVG Topology Map */
.topology-container {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: rgba(8, 13, 22, 0.7);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 20px;
}

.topology-svg {
  width: 100%;
  height: 100%;
}

.circuit-flow {
  stroke-dasharray: 6, 8;
  animation: dash-flow 20s linear infinite;
}

@keyframes dash-flow {
  to {
    stroke-dashoffset: -200;
  }
}

.node-pulse {
  animation: node-ping 3s infinite cubic-bezier(0, 0, 0.2, 1);
  transform-origin: center;
}

@keyframes node-ping {
  0% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.25); opacity: 0.4; }
  100% { transform: scale(1); opacity: 0.9; }
}

/* Dashboard Metrics Strip */
.dashboard-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.dashboard-metric-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px;
}

.metric-label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.metric-value {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.metric-badge-status {
  color: var(--accent-green);
  font-size: 0.75rem;
}

/* ==========================================================================
   Brand Data Strip
   ========================================================================== */
.data-strip-section {
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: rgba(16, 24, 38, 0.4);
}

.data-strip-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}

.data-strip-card {
  padding: 16px;
  background: rgba(21, 30, 45, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.data-strip-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 139, 255, 0.3);
}

.data-strip-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-cyan);
  margin: 0 auto 8px;
}

.data-strip-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.data-strip-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   Core Advantages Asymmetric Bento Grid
   ========================================================================== */
.bento-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  grid-template-rows: auto auto;
  gap: 24px;
  margin-top: 48px;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.bento-card:hover {
  transform: translateY(-3px);
  border-color: rgba(99, 139, 255, 0.3);
  box-shadow: var(--shadow-md);
}

/* Card A - Large Left Card */
.bento-card-a {
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bento-circuit-diagram {
  margin-top: 32px;
  background: rgba(8, 13, 22, 0.8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 24px;
}

.circuit-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.circuit-step-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
}

.circuit-step-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.circuit-step-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(86, 217, 231, 0.15);
  color: var(--accent-cyan);
}

.circuit-step-name {
  font-size: 0.875rem;
  font-weight: 600;
}

.circuit-step-status {
  font-size: 0.75rem;
  color: var(--accent-green);
}

/* Card B - Top Right */
.bento-card-b {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.region-matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.region-matrix-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
  transition: border-color var(--transition-fast);
}

.region-matrix-item:hover {
  border-color: var(--accent-cyan);
}

.region-flag {
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.region-name {
  font-size: 0.8125rem;
  font-weight: 600;
}

.region-type {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* Card C - Bottom Right */
.bento-card-c {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.device-wireframes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.device-chip {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 8px;
  text-align: center;
  transition: border-color var(--transition-fast);
}

.device-chip:hover {
  border-color: var(--accent-blue);
}

.device-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-blue);
  margin: 0 auto 8px;
}

.device-name {
  font-size: 0.8125rem;
  font-weight: 600;
}

.device-sub {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Global Node Network Dashboard
   ========================================================================== */
.nodes-dashboard-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  margin-top: 48px;
  box-shadow: var(--shadow-lg);
}

.nodes-map-view {
  background: rgba(8, 13, 22, 0.8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.nodes-map-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.nodes-map-svg {
  width: 100%;
  aspect-ratio: 16 / 11;
}

.map-node-point {
  cursor: pointer;
  transition: transform var(--transition-fast), fill var(--transition-fast);
}

.map-node-point:hover,
.map-node-point.is-active {
  transform: scale(1.3);
  transform-origin: center;
}

.map-node-point.is-active circle {
  fill: var(--accent-cyan);
  filter: drop-shadow(0 0 8px var(--accent-cyan));
}

.nodes-region-tabs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.region-node-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.region-node-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(99, 139, 255, 0.3);
}

.region-node-card.is-active {
  background: rgba(99, 139, 255, 0.1);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 16px rgba(86, 217, 231, 0.15);
}

.region-node-info-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.region-node-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(86, 217, 231, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--accent-cyan);
  font-weight: 700;
}

.region-node-name {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.region-node-spec {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.region-node-status-right {
  text-align: right;
}

.region-node-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
  margin-bottom: 4px;
}

.region-node-latency-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   AI & Streaming Support Bento
   ========================================================================== */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}

.scenario-card {
  border-radius: var(--radius-xl);
  padding: 36px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.scenario-card-ai {
  background: linear-gradient(180deg, #121C2F 0%, #0E1626 100%);
  border-color: rgba(99, 139, 255, 0.2);
}

.scenario-card-streaming {
  background: linear-gradient(180deg, #1C1533 0%, #130E26 100%);
  border-color: rgba(149, 128, 247, 0.2);
}

.scenario-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.scenario-header-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.scenario-card-ai .scenario-header-icon {
  background: rgba(86, 217, 231, 0.15);
  color: var(--accent-cyan);
}

.scenario-card-streaming .scenario-header-icon {
  background: rgba(149, 128, 247, 0.15);
  color: var(--accent-purple);
}

.scenario-title {
  font-size: 1.35rem;
  font-weight: 700;
}

.scenario-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.platform-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  transition: all var(--transition-fast);
}

.platform-pill:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-light);
}

.platform-name {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.platform-use {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.scenario-disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

@media (min-width: 1280px) {
  .pricing-grid-5 {
    grid-template-columns: repeat(5, 1fr);
  }
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 139, 255, 0.4);
}

/* Recommended Tier */
.pricing-card-featured {
  background: linear-gradient(180deg, #17243B 0%, #111B2C 100%);
  border: 1px solid var(--accent-cyan);
  box-shadow: var(--shadow-md), var(--shadow-glow-cyan);
}

.featured-ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #080D16;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 10px rgba(86, 217, 231, 0.4);
}

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

.plan-name {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.plan-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.pricing-cost {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 8px;
}

.price-currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.price-amount {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.price-period {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.pricing-billing-cycle {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.plan-specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.plan-spec-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.spec-check-icon {
  width: 16px;
  height: 16px;
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 2px;
}

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

.pricing-action {
  margin-top: auto;
}

.pricing-card .btn {
  width: 100%;
}

.pricing-notes {
  margin-top: 36px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-align: center;
}

/* ==========================================================================
   SEO Blog System Showcase
   ========================================================================== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: rgba(99, 139, 255, 0.35);
}

.blog-meta-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.blog-category-tag {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(99, 139, 255, 0.12);
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.6875rem;
}

.blog-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.blog-card:hover .blog-card-title {
  color: var(--accent-cyan);
}

.blog-card-summary {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.blog-read-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Typical Use Cases / Testimonials
   ========================================================================== */
.testimonials-slider {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 20px 4px 32px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  margin-top: 36px;
}

.testimonials-slider::-webkit-scrollbar {
  height: 6px;
}

.testimonials-slider::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 3px;
}

.testimonials-slider::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
}

.testimonial-card {
  flex: 0 0 340px;
  scroll-snap-align: start;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-scenario-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 600;
  background: rgba(99, 139, 255, 0.1);
  color: var(--accent-cyan);
  margin-bottom: 14px;
}

.testimonial-quote {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: normal;
}

.testimonial-author-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.testimonial-avatar-mock {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bg-card-hover), var(--border-color));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.testimonial-author-name {
  font-size: 0.8125rem;
  font-weight: 600;
}

.testimonial-author-role {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ Accordion (Native details/summary)
   ========================================================================== */
.faq-accordion-group {
  max-width: 820px;
  margin: 48px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: rgba(99, 139, 255, 0.35);
  background: var(--bg-card-hover);
}

.faq-question {
  padding: 18px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  user-select: none;
}

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

.faq-icon-arrow {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

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

.faq-answer {
  padding: 0 24px 20px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-answer p {
  margin-bottom: 10px;
}

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

/* ==========================================================================
   CTA Banner Section
   ========================================================================== */
.cta-banner-card {
  background: linear-gradient(135deg, #111A29 0%, #152238 50%, #1B1838 100%);
  border: 1px solid rgba(86, 217, 231, 0.25);
  border-radius: var(--radius-xl);
  padding: 56px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow-cyan);
}

.cta-banner-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 100%;
  background: radial-gradient(circle, rgba(86, 217, 231, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner-title {
  font-size: clamp(1.85rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-banner-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.cta-banner-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #05080E;
  border-top: 1px solid var(--border-color);
  padding: 64px 0 32px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
}

.footer-brand {
  max-width: 360px;
}

.footer-brand-desc {
  color: var(--text-secondary);
  margin-top: 12px;
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent-cyan);
}

.footer-disclaimer-box {
  margin-top: 32px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  line-height: 1.6;
}

.footer-bottom {
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Standalone Article & Subpage Layouts
   ========================================================================== */
.page-header {
  padding-top: calc(var(--header-height) + 48px);
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(16, 24, 38, 0.4);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  list-style: none;
}

.breadcrumbs a {
  color: var(--text-secondary);
}

.breadcrumbs a:hover {
  color: var(--accent-cyan);
}

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

.article-container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  padding: 56px 0 96px;
}

.article-main {
  min-width: 0;
}

.article-header {
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.article-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.article-content {
  font-size: 1rem;
  line-height: 1.8;
  color: #D1D9E6;
}

.article-content h2 {
  font-size: 1.625rem;
  font-weight: 700;
  margin: 48px 0 16px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 32px 0 12px;
  color: var(--text-primary);
}

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

.article-content ul,
.article-content ol {
  margin: 0 0 24px 24px;
}

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

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

.article-content a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: var(--text-primary);
}

.article-callout {
  background: var(--bg-card);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.article-callout-warning {
  border-left-color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.08);
}

.article-table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

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

.article-table th {
  background: rgba(255, 255, 255, 0.04);
  padding: 12px 16px;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

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

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

.article-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  height: fit-content;
}

.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-title {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.8125rem;
}

.toc-link {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.toc-link:hover {
  color: var(--accent-cyan);
}

.article-nav-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.pager-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: border-color var(--transition-fast);
}

.pager-card:hover {
  border-color: rgba(99, 139, 255, 0.4);
}

.pager-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.pager-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================================================
   Mobile Bottom Floating CTA
   ========================================================================== */
.mobile-floating-cta {
  display: none;
  position: fixed;
  bottom: 16px;
  left: 16px;
  right: 16px;
  z-index: 90;
  background: rgba(8, 13, 22, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 8px 12px 8px 20px;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-lg), var(--shadow-glow-cyan);
}

.mobile-floating-cta-text {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
  }

  .hero-features-list,
  .hero-cta-group,
  .hero-disclaimer {
    justify-content: center;
  }

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

  .bento-card-a {
    grid-row: auto;
  }

  .nodes-dashboard-wrapper {
    grid-template-columns: 1fr;
  }

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

  .pricing-grid,
  .pricing-grid-5 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .article-container {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    display: none;
  }
}

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

  .hamburger-btn {
    display: flex;
  }

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

  .pricing-grid,
  .pricing-grid-5 {
    grid-template-columns: 1fr;
  }

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

  .mobile-floating-cta {
    display: flex;
  }

  .footer-top {
    flex-direction: column;
  }

  .article-nav-pager {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 480px) {
  .data-strip-grid {
    grid-template-columns: 1fr;
  }

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

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

/* 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;
  }
}