/* ==========================================================================
   WgetCloud - Constellation Cloud Mesh Stylesheet
   Theme: Midnight navy-black (#050814) + Hyper-electric Cyan (#00F5FF) + Nebula Violet (#8B5CF6)
   Pure Native CSS | Responsive @media | High Performance Zero Dependencies
   ========================================================================== */

/* --------------------------------------------------
   1. Design Tokens & CSS Variables
   -------------------------------------------------- */
:root {
  /* Daylight Mode (Default) */
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-surface-subtle: #f1f5f9;
  --bg-overlay: rgba(255, 255, 255, 0.88);
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --border-light: #e2e8f0;
  --border-subtle: #cbd5e1;
  --border-focus: #0284c7;

  --accent-cyan: #0284c7;
  --accent-violet: #7c3aed;
  --accent-primary: #0284c7;
  --accent-primary-hover: #0369a1;
  --accent-gradient: linear-gradient(135deg, #0284c7 0%, #7c3aed 100%);
  --accent-glow: rgba(2, 132, 199, 0.16);

  --accent-success: #10b981;
  --accent-success-subtle: rgba(16, 185, 129, 0.12);
  --accent-warning: #f59e0b;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.09), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-normal: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-theme: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

[data-theme="dark"] {
  /* UI Concept: Constellation Cloud Mesh (Deep-Space Midnight Navy-Black) */
  --bg-primary: #050814;
  --bg-surface: #0a0f24;
  --bg-surface-elevated: #111838;
  --bg-surface-subtle: #0d142f;
  --bg-overlay: rgba(5, 8, 20, 0.88);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #050814;

  --border-light: rgba(0, 245, 255, 0.12);
  --border-subtle: rgba(139, 92, 246, 0.25);
  --border-focus: #00F5FF;

  /* Hyper-electric Cyan & Nebula Violet */
  --accent-cyan: #00F5FF;
  --accent-violet: #8B5CF6;
  --accent-primary: #00F5FF;
  --accent-primary-hover: #38bdf8;
  --accent-gradient: linear-gradient(135deg, #00F5FF 0%, #8B5CF6 100%);
  --accent-glow: rgba(0, 245, 255, 0.25);

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 8px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 20px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 24px 35px -5px rgba(0, 0, 0, 0.8), 0 10px 12px -6px rgba(0, 0, 0, 0.6);
}

/* --------------------------------------------------
   2. Reset & Base Styles
   -------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: var(--transition-theme);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

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

/* --------------------------------------------------
   3. Layout Utilities
   -------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1220px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 90px 0;
  position: relative;
  transition: background-color 0.4s ease;
}

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

/* Dynamic Target Section Transition Highlight Effect */
.section-highlight {
  animation: sectionTargetGlow 1.2s ease-out;
}

@keyframes sectionTargetGlow {
  0% {
    box-shadow: inset 0 0 0 2px var(--accent-cyan), 0 0 30px var(--accent-glow);
  }
  100% {
    box-shadow: inset 0 0 0 0 transparent, 0 0 0 transparent;
  }
}

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

.section-header {
  max-width: 740px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--accent-glow);
  color: var(--accent-cyan);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 16px;
  border: 1px solid rgba(0, 245, 255, 0.25);
  letter-spacing: 0.03em;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 850;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --------------------------------------------------
   4. Header & Navigation (Full Anchor Directory)
   -------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-overlay);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-theme);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 850;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-icon-box {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #050814;
  box-shadow: 0 4px 14px var(--accent-glow);
}

[data-theme="dark"] .brand-icon-box {
  color: #050814;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 6px;
  position: relative;
  transition: color 0.2s ease;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
}

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

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

/* --------------------------------------------------
   5. Day/Night Theme Toggle (Textured & Glassmorphism)
   -------------------------------------------------- */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.theme-toggle-btn:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
  box-shadow: 0 0 12px var(--accent-glow);
}

.theme-icon-sun,
.theme-icon-moon {
  width: 20px;
  height: 20px;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s ease;
  position: absolute;
}

/* Light mode defaults */
:root .theme-icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
:root .theme-icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.4);
}

/* Dark mode state */
[data-theme="dark"] .theme-icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.4);
}
[data-theme="dark"] .theme-icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

/* --------------------------------------------------
   6. Buttons & Interactive Elements
   -------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-normal);
  white-space: nowrap;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #050814 !important;
  font-weight: 800;
  box-shadow: 0 4px 18px var(--accent-glow);
}

[data-theme="dark"] .btn-primary {
  color: #050814 !important;
}

:root:not([data-theme="dark"]) .btn-primary {
  color: #ffffff !important;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 245, 255, 0.4);
  filter: brightness(1.08);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-surface-subtle);
  border-color: var(--accent-cyan);
  transform: translateY(-1px);
}

.btn-full {
  width: 100%;
}

/* --------------------------------------------------
   7. Hero Section with 3D Constellation Canvas
   -------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: 640px;
  padding: 60px 0 60px;
  overflow: hidden;
  display: flex;
  align-items: center;
  background: radial-gradient(circle at 50% 15%, var(--accent-glow) 0%, transparent 70%);
}

.constellation-canvas-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
  z-index: 1;
}

#constellationCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
  pointer-events: none; /* Let canvas receive mouse movements except buttons */
}

.hero-interactive-elements {
  pointer-events: auto;
}

.hero-announcement {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: var(--radius-full);
  background: var(--bg-overlay);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-size: 3.35rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  color: var(--text-primary);
}

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

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 34px;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

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

.canvas-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 12px;
}

/* Hero Stats Bar */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding: 22px;
  background: var(--bg-overlay);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  margin-top: 36px;
}

.stat-item {
  text-align: center;
  padding: 6px;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 850;
  color: var(--accent-cyan);
  line-height: 1.2;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* Network Radar Card */
.network-card-wrap {
  margin-top: 36px;
  background: var(--bg-overlay);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 22px;
  box-shadow: var(--shadow-lg);
  text-align: left;
}

.network-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-success);
  background: var(--accent-success-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  transition: all 0.3s ease;
}

.live-badge.ping-active {
  background: rgba(0, 245, 255, 0.25);
  color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--accent-cyan);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-success);
  box-shadow: 0 0 8px var(--accent-success);
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.node-card {
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.node-info-region {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-flag {
  font-size: 1.15rem;
}

.node-ping {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

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

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 34px 28px;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-cyan);
}

.feature-icon-box {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-lg);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 22px;
  transition: var(--transition-normal);
}

.feature-card:hover .feature-icon-box {
  background: var(--accent-gradient);
  color: #050814;
  transform: scale(1.06);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-list {
  border-top: 1px solid var(--border-light);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.feature-check-icon {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* --------------------------------------------------
   9. Showcase Cards (Streaming & AI)
   -------------------------------------------------- */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 22px;
}

.showcase-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.showcase-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
  box-shadow: 0 10px 25px var(--accent-glow);
}

.showcase-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.showcase-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.showcase-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.showcase-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--accent-glow);
  color: var(--accent-cyan);
}

.showcase-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}

.showcase-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  padding-top: 12px;
}

/* --------------------------------------------------
   10. Real-World Pricing Section & Billing Switcher
   -------------------------------------------------- */
.pricing-billing-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-light);
  padding: 6px;
  border-radius: var(--radius-full);
  margin: 0 auto 36px;
}

.billing-switch-btn {
  background: transparent;
  border: none;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-normal);
}

.billing-switch-btn.active {
  background: var(--accent-gradient);
  color: #050814;
  box-shadow: 0 4px 12px var(--accent-glow);
}

:root:not([data-theme="dark"]) .billing-switch-btn.active {
  color: #ffffff;
}

.save-pill {
  font-size: 0.75rem;
  background: #f59e0b;
  color: #ffffff;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  margin-left: 4px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 32px 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-cyan);
}

.pricing-popular {
  border: 2px solid var(--accent-cyan);
  box-shadow: 0 10px 30px var(--accent-glow);
  transform: scale(1.02);
}

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

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #050814;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: 0 4px 12px var(--accent-glow);
}

:root:not([data-theme="dark"]) .popular-badge {
  color: #ffffff;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
  min-height: 40px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-light);
}

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

.plan-amount {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-primary);
}

.plan-period {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.plan-traffic-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: var(--accent-glow);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
}

.plan-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.plan-feature-item.highlight {
  font-weight: 700;
  color: var(--text-primary);
}

.plan-check {
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 2px;
}

/* --------------------------------------------------
   11. User Reviews
   -------------------------------------------------- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.review-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-normal);
}

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

.review-stars {
  color: #f59e0b;
  font-size: 1.05rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

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

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--accent-glow);
  color: var(--accent-cyan);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  border: 1px solid rgba(0, 245, 255, 0.25);
}

.reviewer-name {
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--text-primary);
}

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

/* --------------------------------------------------
   12. FAQ Accordion
   -------------------------------------------------- */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-item.active {
  border-color: var(--accent-cyan);
  box-shadow: 0 4px 18px var(--accent-glow);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: transparent;
  border: none;
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--accent-cyan);
}

.faq-toggle-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
  color: var(--text-muted);
  flex-shrink: 0;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
  color: var(--accent-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 420px;
  padding-bottom: 22px;
}

/* --------------------------------------------------
   13. Bottom CTA Banner
   -------------------------------------------------- */
.cta-banner {
  background: var(--accent-gradient);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  color: #050814;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px var(--accent-glow);
}

:root:not([data-theme="dark"]) .cta-banner {
  color: #ffffff;
}

.cta-banner-title {
  font-size: 2.3rem;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-banner-desc {
  font-size: 1.125rem;
  opacity: 0.95;
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.btn-white {
  background: #ffffff;
  color: #050814 !important;
  font-weight: 800;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-white:hover {
  background: #f1f5f9;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* --------------------------------------------------
   14. Articles Grid (for Recommended Insights)
   -------------------------------------------------- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  margin-top: 30px;
}

.article-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-lg);
}

.article-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: var(--accent-glow);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  align-self: flex-start;
}

.article-title {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text-primary);
}

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

.article-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  padding-top: 14px;
}

/* --------------------------------------------------
   15. Footer (Strictly 4 Headings/Links only)
   -------------------------------------------------- */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  padding: 48px 0 36px;
  transition: var(--transition-theme);
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: var(--transition-normal);
  padding: 6px 8px;
}

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

.footer-bottom {
  text-align: center;
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --------------------------------------------------
   16. Long-form SEO Article Typography & Components
   -------------------------------------------------- */
.article-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.article-header {
  margin-bottom: 36px;
  text-align: left;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

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

.article-main-title {
  font-size: 2.35rem;
  font-weight: 850;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
  flex-wrap: wrap;
}

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

/* Table of Contents (TOC) */
.article-toc {
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 32px 0 40px;
}

.toc-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-list a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.toc-list a:hover {
  color: var(--accent-cyan);
  text-decoration: underline;
}

/* Article Body Typography */
.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
  letter-spacing: -0.01em;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 28px 0 14px;
}

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

.article-body strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-body ul, .article-body ol {
  margin: 16px 0 24px 24px;
}

.article-body li {
  margin-bottom: 10px;
  list-style-type: disc;
}

.article-body ol li {
  list-style-type: decimal;
}

/* Article Callout Boxes */
.article-callout {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0;
  box-shadow: var(--shadow-sm);
}

.article-callout-title {
  font-weight: 750;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Comparison Tables in Articles */
.article-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0 32px;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  text-align: left;
}

.article-table th, .article-table td {
  padding: 12px 16px;
  border: 1px solid var(--border-light);
}

.article-table th {
  background: var(--bg-surface-subtle);
  font-weight: 750;
  color: var(--text-primary);
}

.article-table td {
  background: var(--bg-surface);
}

/* Related Reading Cluster */
.related-section {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border-light);
}

.related-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 22px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.related-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.related-card-title {
  font-size: 1.05rem;
  font-weight: 750;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.45;
}

.related-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 12px;
  flex-grow: 1;
}

/* --------------------------------------------------
   17. Content Pages (About, Terms, Privacy, Sitemap)
   -------------------------------------------------- */
.page-header {
  padding: 60px 0 40px;
  background: radial-gradient(circle at 50% 0%, var(--accent-glow) 0%, transparent 60%);
  text-align: center;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 850;
  margin-bottom: 14px;
}

.page-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
}

.content-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 48px;
  margin-bottom: 60px;
  box-shadow: var(--shadow-sm);
  line-height: 1.8;
}

.content-box h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.content-box h2:first-child {
  margin-top: 0;
}

.content-box ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 20px;
  color: var(--text-secondary);
}

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

.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.back-home-link:hover {
  text-decoration: underline;
}

/* --------------------------------------------------
   17. Responsive Media Queries (@media)
   -------------------------------------------------- */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-popular {
    transform: none;
  }
  .pricing-popular:hover {
    transform: translateY(-5px);
  }
  .node-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .section-title {
    font-size: 1.85rem;
  }
  .section {
    padding: 60px 0;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .node-grid {
    grid-template-columns: 1fr;
  }

  .mobile-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
    flex-direction: column;
    padding: 24px;
    gap: 14px;
    box-shadow: var(--shadow-xl);
    display: none;
  }

  .nav-menu.show {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    font-size: 1.05rem;
  }

  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }

  .content-box {
    padding: 24px 18px;
  }

  .cta-banner {
    padding: 40px 20px;
  }

  .cta-banner-title {
    font-size: 1.75rem;
  }
}