/* ==========================================================================
   BoostNet - Aerospace Holographic Command UI & High-Speed Landing Page
   Aesthetic: Deep Cosmic Dark (#04060E), Holographic HUD, Laser Emerald (#00ff88),
   Celestial Blue (#00d2ff), Orbital Vectors & Network Telemetry.
   Pure Vanilla CSS - 0 External Dependencies - Instant Loading
   ========================================================================== */

:root {
  /* Color Palette - Light Mode (High-Tech Telemetry Lab) */
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-tertiary: #e2e8f0;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --border-color: #cbd5e1;
  --border-light: #e2e8f0;
  --hud-bg: rgba(255, 255, 255, 0.85);
  --hud-border: rgba(0, 114, 255, 0.25);
  --hud-border-active: rgba(16, 185, 129, 0.5);
  --text-primary: #0a0f1d;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --primary: #0066ff;
  --primary-hover: #0052cc;
  --primary-light: rgba(0, 102, 255, 0.08);
  --celestial-blue: #0284c7;
  --laser-emerald: #059669;
  --laser-emerald-glow: rgba(5, 150, 105, 0.2);
  --accent-gradient: linear-gradient(135deg, #0066ff 0%, #0284c7 50%, #059669 100%);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --badge-bg: rgba(0, 102, 255, 0.08);
  --badge-border: rgba(0, 102, 255, 0.25);
  --badge-text: #0066ff;
  --card-shadow: 0 4px 20px -2px rgba(10, 15, 29, 0.06), 0 2px 6px -1px rgba(10, 15, 29, 0.04);
  --card-shadow-hover: 0 20px 35px -8px rgba(0, 102, 255, 0.15), 0 8px 16px -4px rgba(10, 15, 29, 0.06);
  --nav-bg: rgba(248, 250, 252, 0.9);
  --nav-border: rgba(203, 213, 225, 0.85);
  --glass-bg: rgba(255, 255, 255, 0.8);
  --hud-grid: rgba(0, 102, 255, 0.035);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* Color Palette - Aerospace Holographic Cosmic Dark (#04060E) */
  --bg-primary: #04060e;
  --bg-secondary: #080c1a;
  --bg-tertiary: #0f162c;
  --bg-card: rgba(8, 14, 30, 0.72);
  --bg-card-hover: rgba(12, 20, 42, 0.85);
  --border-color: rgba(0, 210, 255, 0.18);
  --border-light: rgba(0, 210, 255, 0.08);
  --hud-bg: rgba(6, 10, 22, 0.82);
  --hud-border: rgba(0, 210, 255, 0.28);
  --hud-border-active: rgba(0, 255, 136, 0.6);
  --text-primary: #f0f6fc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --primary: #00d2ff;
  --primary-hover: #38bdf8;
  --primary-light: rgba(0, 210, 255, 0.12);
  --celestial-blue: #00d2ff;
  --laser-emerald: #00ff88;
  --laser-emerald-glow: rgba(0, 255, 136, 0.35);
  --accent-gradient: linear-gradient(135deg, #00d2ff 0%, #00ff88 100%);
  --success: #00ff88;
  --warning: #fbbf24;
  --danger: #f87171;
  --badge-bg: rgba(0, 210, 255, 0.12);
  --badge-border: rgba(0, 210, 255, 0.35);
  --badge-text: #00d2ff;
  --card-shadow: 0 8px 30px -4px rgba(0, 0, 0, 0.7), 0 0 15px rgba(0, 210, 255, 0.05);
  --card-shadow-hover: 0 16px 40px -4px rgba(0, 0, 0, 0.85), 0 0 25px rgba(0, 210, 255, 0.18);
  --nav-bg: rgba(4, 6, 14, 0.88);
  --nav-border: rgba(0, 210, 255, 0.22);
  --glass-bg: rgba(8, 14, 30, 0.75);
  --hud-grid: rgba(0, 210, 255, 0.04);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  position: relative;
}

/* Holographic Cosmic Grid Background Overlay */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(var(--hud-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--hud-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center center;
  pointer-events: none;
  z-index: 0;
}

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

img, svg {
  display: block;
}

/* Smooth anchor target scrolling offset */
section[id], div[id], h2[id], h3[id], article[id] {
  scroll-margin-top: 86px;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Header & Holographic Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--nav-border);
  transition: var(--transition);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #04060e;
  box-shadow: 0 0 15px var(--laser-emerald-glow);
  position: relative;
}

[data-theme="dark"] .brand-icon {
  color: #04060e;
}

.brand-logo span.highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-status-tag {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  background: var(--badge-bg);
  color: var(--laser-emerald);
  border: 1px solid var(--badge-border);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Desktop Navigation Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
  padding: 6px 2px;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width 0.25s ease;
  border-radius: 2px;
}

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

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

/* Special Badge for '推荐资讯' nav item */
.nav-link-news {
  color: var(--laser-emerald) !important;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link-news .pulse-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--laser-emerald);
  box-shadow: 0 0 8px var(--laser-emerald);
  animation: radar-pulse 1.8s infinite;
}

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

/* Refined Translucent Theme Switch Button */
.theme-switch-btn {
  background: var(--glass-bg);
  border: 1px solid var(--hud-border);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: var(--transition);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.theme-switch-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 0 12px var(--laser-emerald-glow);
}

.theme-icon {
  width: 19px;
  height: 19px;
  transition: transform 0.4s ease, opacity 0.2s ease;
}

.icon-moon {
  display: none;
}

[data-theme="dark"] .icon-sun {
  display: none;
}

[data-theme="dark"] .icon-moon {
  display: block;
}

/* CTA Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #04060e !important;
  font-weight: 700;
  box-shadow: 0 0 18px var(--laser-emerald-glow);
}

.btn-primary:hover {
  box-shadow: 0 0 26px rgba(0, 255, 136, 0.5);
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
}

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

.btn-lg {
  padding: 13px 30px;
  font-size: 1.05rem;
  border-radius: 10px;
}

.btn-block {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 6px;
}

/* ==========================================================================
   Hero Section: Aerospace Holographic Command Center
   ========================================================================== */
.hero-section {
  padding: 130px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-header-wrap {
  text-align: center;
  max-width: 960px;
  margin: 0 auto 36px;
}

.hero-hud-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--badge-text);
  padding: 5px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}

.hero-hud-badge .live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--laser-emerald);
  box-shadow: 0 0 8px var(--laser-emerald);
  animation: radar-pulse 1.6s infinite;
}

@keyframes radar-pulse {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.4); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -1.2px;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-title .brand-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 30px rgba(0, 210, 255, 0.2);
}

.hero-subtitle {
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 28px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
}

/* ==========================================================================
   Centerpiece Holographic Command Center (Globe + Dual Orbital Rings + Telemetry)
   ========================================================================== */
.hologram-hud-container {
  display: grid;
  grid-template-columns: 290px 1fr 290px;
  gap: 20px;
  align-items: stretch;
  background: var(--hud-bg);
  border: 1px solid var(--hud-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

/* Hologram Corner Accents */
.hologram-hud-container::before,
.hologram-hud-container::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--laser-emerald);
  pointer-events: none;
}
.hologram-hud-container::before {
  top: 6px;
  left: 6px;
  border-top: 2px solid;
  border-left: 2px solid;
}
.hologram-hud-container::after {
  bottom: 6px;
  right: 6px;
  border-bottom: 2px solid;
  border-right: 2px solid;
}

/* Left Sidebar: Real-Time Ping Telemetry */
.hud-panel {
  background: rgba(8, 14, 30, 0.4);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.hud-panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.hud-panel-title svg {
  width: 16px;
  height: 16px;
  color: var(--laser-emerald);
}

.telemetry-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: rgba(0, 210, 255, 0.04);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 8px 10px;
  transition: var(--transition);
}

.telemetry-item:hover {
  border-color: var(--primary);
  background: rgba(0, 210, 255, 0.08);
}

.telemetry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.telemetry-ping {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--laser-emerald);
  font-family: monospace;
}

.telemetry-bar-wrap {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.telemetry-bar {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 2px;
  transition: width 0.5s ease;
}

.telemetry-footer-stats {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--border-light);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-size: 0.75rem;
}

.stat-metric {
  color: var(--text-muted);
}
.stat-metric strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
  font-family: monospace;
}

/* Centerpiece 3D WebGL Globe Viewport */
.globe-viewport-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 440px;
  background: radial-gradient(circle at center, rgba(0, 210, 255, 0.08) 0%, transparent 70%);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
}

/* Dual Rotating Orbital Data Rings (CSS Holographic Overlays) */
.orbital-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.orbital-ring-1 {
  width: 380px;
  height: 380px;
  border: 1px dashed rgba(0, 210, 255, 0.35);
  animation: orbital-spin-1 22s linear infinite;
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.1);
}

.orbital-ring-2 {
  width: 440px;
  height: 440px;
  border: 1px solid rgba(0, 255, 136, 0.25);
  border-top-color: var(--laser-emerald);
  border-bottom-color: var(--celestial-blue);
  animation: orbital-spin-2 32s linear infinite reverse;
}

@keyframes orbital-spin-1 {
  from { transform: translate(-50%, -50%) rotateX(68deg) rotateY(15deg) rotateZ(0deg); }
  to { transform: translate(-50%, -50%) rotateX(68deg) rotateY(15deg) rotateZ(360deg); }
}

@keyframes orbital-spin-2 {
  from { transform: translate(-50%, -50%) rotateX(72deg) rotateY(-25deg) rotateZ(0deg); }
  to { transform: translate(-50%, -50%) rotateX(72deg) rotateY(-25deg) rotateZ(360deg); }
}

/* Radar Sweeping Line Overlay */
.radar-sweep-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  background: conic-gradient(from 0deg at 50% 50%, rgba(0, 255, 136, 0.22) 0deg, transparent 65deg, transparent 360deg);
  animation: radar-sweep 4.5s linear infinite;
  z-index: 2;
}

@keyframes radar-sweep {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Canvas Element for 3D Interactive WebGL Globe */
#globeCanvas {
  width: 360px;
  height: 360px;
  max-width: 100%;
  display: block;
  cursor: grab;
  position: relative;
  z-index: 3;
}

#globeCanvas:active {
  cursor: grabbing;
}

/* Interactive Station Quick-Select Dock */
.station-dock {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  margin-top: 14px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
}

[data-theme="dark"] .station-dock {
  background: rgba(6, 10, 22, 0.85);
  border-color: var(--hud-border);
  box-shadow: 0 0 16px rgba(0, 210, 255, 0.12);
}

.station-pill {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-primary);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.station-pill:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.station-pill.active {
  background: var(--accent-gradient);
  color: #04060e !important;
  font-weight: 800;
  box-shadow: 0 0 12px var(--laser-emerald-glow);
}

.station-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--laser-emerald);
}

.station-pill.active .dot {
  background: #04060e;
}

.globe-instruction {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Right Drawer: Route Optimization Scores */
.route-score-card {
  background: rgba(0, 210, 255, 0.05);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 12px;
}

.score-number {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--laser-emerald);
  font-family: monospace;
  letter-spacing: -1px;
}

.score-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}

.route-meta-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.route-meta-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border-light);
}

.route-meta-list li span.val {
  font-weight: 700;
  color: var(--text-primary);
  font-family: monospace;
}

.tunnel-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 255, 136, 0.12);
  border: 1px solid rgba(0, 255, 136, 0.3);
  color: var(--laser-emerald);
  font-size: 0.74rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 4px;
  width: fit-content;
}

/* ==========================================================================
   Section Components (Features, Streaming, AI, Pricing, Reviews, FAQ)
   ========================================================================== */
.section {
  padding: 85px 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 54px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: var(--text-primary);
  margin-bottom: 16px;
}

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

/* 3 Core Advantage Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon-wrapper {
  background: var(--primary);
  color: #04060e;
  transform: scale(1.06);
}

.feature-icon-wrapper svg {
  width: 26px;
  height: 26px;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.feature-list svg {
  width: 15px;
  height: 15px;
  color: var(--laser-emerald);
  flex-shrink: 0;
}

/* Streaming & AI Cards Showcase */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
}

.showcase-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary);
}

.showcase-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--badge-text);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  width: fit-content;
  margin-bottom: 16px;
}

.showcase-title {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.showcase-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.badges-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 26px;
}

.service-badge {
  background: rgba(0, 210, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px 8px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.service-badge:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.service-badge-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
}

.service-badge-name {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
}

.service-badge-status {
  font-size: 0.7rem;
  color: var(--laser-emerald);
  font-weight: 700;
  background: rgba(0, 255, 136, 0.12);
  padding: 2px 6px;
  border-radius: 8px;
}

.showcase-footer {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.showcase-highlight {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.showcase-highlight svg {
  width: 15px;
  height: 15px;
  color: var(--laser-emerald);
}

/* ==========================================================================
   Real-World Pricing Comparison Table
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  backdrop-filter: blur(12px);
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 25px rgba(0, 210, 255, 0.22);
  transform: scale(1.02);
  z-index: 2;
}

.featured-ribbon {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #04060e;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 0 15px var(--laser-emerald-glow);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow-hover);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-5px);
}

.pricing-header {
  margin-bottom: 22px;
  text-align: center;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin: 18px 0 6px;
}

.plan-currency {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
}

.plan-price {
  font-size: 3rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -1px;
  font-family: monospace;
}

.plan-period {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plan-billing-note {
  font-size: 0.8rem;
  color: var(--laser-emerald);
  font-weight: 700;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin: 24px 0 32px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pricing-features svg.icon-check {
  width: 17px;
  height: 17px;
  color: var(--laser-emerald);
  flex-shrink: 0;
}

.pricing-features svg.icon-cross {
  width: 17px;
  height: 17px;
  color: var(--text-muted);
  opacity: 0.35;
  flex-shrink: 0;
}

/* User Reviews Section */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
}

.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--primary);
}

.review-rating {
  display: flex;
  gap: 4px;
  color: #f59e0b;
  margin-bottom: 14px;
}

.review-rating svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.review-text {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 22px;
  flex-grow: 1;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  border: 1px solid var(--hud-border);
}

.author-info h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* FAQ Accordion Section */
.faq-container {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: none;
  border: none;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition);
}

.faq-icon {
  width: 18px;
  height: 18px;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.94rem;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  max-height: 350px;
  padding-bottom: 20px;
}

/* CTA Bottom Banner */
.cta-banner {
  background: linear-gradient(135deg, rgba(0, 210, 255, 0.15) 0%, rgba(0, 255, 136, 0.15) 100%), var(--bg-card);
  border: 1px solid var(--hud-border-active);
  border-radius: var(--radius-lg);
  padding: 56px 36px;
  text-align: center;
  color: var(--text-primary);
  margin: 50px auto 0;
  max-width: 1080px;
  box-shadow: 0 0 35px var(--laser-emerald-glow);
  backdrop-filter: blur(14px);
  position: relative;
}

.cta-banner h2 {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 14px;
  letter-spacing: -0.8px;
}

.cta-banner p {
  font-size: 1.1rem;
  max-width: 680px;
  margin: 0 auto 30px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Footer - STRICTLY 4 TITLES AS REQUIRED
   ========================================================================== */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 54px 0 32px;
  transition: var(--transition);
  position: relative;
  z-index: 2;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 26px;
}

.footer-brand-info {
  max-width: 420px;
}

.footer-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.6;
}

/* Exactly 4 Titles in Footer */
.footer-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
}

.footer-nav-link {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: var(--transition);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-nav-link:hover {
  color: var(--primary);
  transform: translateY(-1px);
}

.footer-nav-link svg {
  width: 14px;
  height: 14px;
  opacity: 0.7;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.footer-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 255, 136, 0.1);
  color: var(--laser-emerald);
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--laser-emerald);
  animation: radar-pulse 1.8s infinite;
}

/* ==========================================================================
   Sub-page Styles (About, Terms, Privacy, Sitemap, Tech Insights)
   ========================================================================== */
.page-header {
  padding: 130px 0 45px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: radial-gradient(circle at 50% 20%, rgba(0, 210, 255, 0.08) 0%, transparent 60%);
}

.page-title {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.8px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.page-lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
}

.page-content-wrapper {
  padding: 50px 0 90px;
}

.content-article {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(12px);
}

.content-article h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 34px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.content-article h2:first-of-type {
  margin-top: 0;
}

.content-article h3 {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 22px 0 12px;
}

.content-article p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 0.98rem;
}

.content-article ul, .content-article ol {
  margin: 0 0 18px 22px;
  color: var(--text-secondary);
  line-height: 1.8;
}

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

.alert-box {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 22px 0;
  color: var(--text-secondary);
  font-size: 0.94rem;
}

.alert-box.alert-danger {
  background: rgba(239, 68, 68, 0.08);
  border-left-color: var(--danger);
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 22px 0;
}

.node-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.node-country {
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.node-stats {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Insights Articles Card Grid */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 30px;
}

.insight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.insight-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--card-shadow-hover);
}

.insight-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.insight-tag {
  background: var(--primary-light);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}

.insight-title {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.insight-excerpt {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
  flex-grow: 1;
}

/* ==========================================================================
   Long-form SEO Article Components (Breadcrumbs, TOC, Tables, FAQ, Related)
   ========================================================================== */
.article-breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

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

.article-breadcrumbs span.sep {
  opacity: 0.5;
}

.article-toc {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 22px 26px;
  margin: 28px 0 34px;
}

.article-toc-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 4px;
}

.article-toc-list a {
  color: var(--text-secondary);
  font-size: 0.94rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.article-toc-list a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.article-author-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--text-primary);
}

.article-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

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

.article-table th {
  background: var(--bg-tertiary);
  padding: 12px 16px;
  font-weight: 800;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.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-table tr:hover td {
  background: rgba(0, 210, 255, 0.04);
}

.article-related-box {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 40px;
}

.article-related-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-related-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.article-related-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-related-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* Sitemap Trees */
.sitemap-tree {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.sitemap-group {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
}

.sitemap-group-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sitemap-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sitemap-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.92rem;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.sitemap-link:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateX(4px);
}

/* ==========================================================================
   Responsive Adaptations (@media)
   ========================================================================== */
@media (max-width: 1100px) {
  .hologram-hud-container {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

@media (max-width: 768px) {
  .hero-section {
    padding: 100px 0 40px;
  }

  .hero-title {
    font-size: 2rem;
    letter-spacing: -0.5px;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

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

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.7rem;
  }

  /* Single Column on Mobile */
  .features-grid,
  .showcase-grid,
  .pricing-grid,
  .reviews-grid,
  .node-grid,
  .insights-grid,
  .sitemap-tree {
    grid-template-columns: 1fr;
    gap: 18px;
  }

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

  .showcase-card,
  .content-article {
    padding: 22px 18px;
  }

  /* Mobile Nav */
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 16px;
    display: none;
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    z-index: 1000;
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .footer-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
  }

  .footer-nav {
    flex-wrap: wrap;
    gap: 16px 20px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .cta-banner {
    padding: 36px 18px;
    margin: 30px 12px 0;
  }

  .cta-banner h2 {
    font-size: 1.6rem;
  }
}