/* ==========================================================================
   鲲鹏加速 (Kunpeng Acceleration) - 2026 Next-Gen Tech Stylesheet
   High-Tech Cyber Aesthetic | Second-Level Instant Load | Zero External Bloat
   ========================================================================== */

:root {
  /* Futuristic Color Palette */
  --bg-primary: #050811;
  --bg-secondary: #0b1120;
  --bg-tertiary: #111a2e;
  --bg-card: rgba(15, 23, 42, 0.72);
  --bg-card-hover: rgba(22, 33, 58, 0.88);
  --bg-glass: rgba(255, 255, 255, 0.03);
  
  --border-subtle: rgba(56, 189, 248, 0.14);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(56, 189, 248, 0.45);
  --border-hot: rgba(244, 63, 94, 0.5);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-highlight: #38bdf8;
  
  /* Cyber Neon Accents */
  --cyan: #38bdf8;
  --cyan-glow: rgba(56, 189, 248, 0.3);
  --blue: #3b82f6;
  --indigo: #6366f1;
  --violet: #8b5cf6;
  --emerald: #10b981;
  --rose: #f43f5e;
  --amber: #f59e0b;
  
  --gradient-brand: linear-gradient(135deg, #38bdf8 0%, #3b82f6 50%, #8b5cf6 100%);
  --gradient-glow: linear-gradient(135deg, rgba(56, 189, 248, 0.2) 0%, rgba(99, 102, 241, 0.1) 100%);
  --gradient-card: linear-gradient(180deg, rgba(30, 41, 59, 0.4) 0%, rgba(15, 23, 42, 0.7) 100%);
  --gradient-hot: linear-gradient(135deg, #f43f5e 0%, #ec4899 100%);
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --container-max: 1240px;
  --header-height: 72px;
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.22);
  --shadow-glow-hot: 0 0 30px rgba(244, 63, 94, 0.25);
  
  --transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.15) 0%, transparent 60%),
    radial-gradient(circle at 90% 40%, rgba(99, 102, 241, 0.09) 0%, transparent 50%),
    radial-gradient(circle at 10% 70%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
}

/* Keyboard accessibility: Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1.5rem;
  background: var(--cyan);
  color: #030712;
  padding: 0.8rem 1.4rem;
  font-weight: 700;
  z-index: 10000;
  border-radius: var(--radius-sm);
  transition: top 0.2s;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.4);
}
.skip-link:focus {
  top: 1rem;
  outline: 3px solid #ffffff;
}

/* Anchor Clearance */
[id] {
  scroll-margin-top: calc(var(--header-height) + 1.8rem);
}

a {
  color: var(--cyan);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: #7dd3fc;
  text-decoration: none;
}
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

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

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

/* ==========================================================================
   Header & Floating Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(5, 8, 17, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: var(--transition);
}

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

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--text-primary);
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-brand);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #030712;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.45);
}
.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.logo-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid var(--border-subtle);
  color: var(--cyan);
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.8rem;
}
.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
  padding: 0.4rem 0;
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--cyan);
  transition: width 0.25s ease;
  border-radius: var(--radius-full);
}
.nav-link:hover::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 44px;
  min-width: 44px;
  padding: 0.7rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #030712;
  box-shadow: 0 4px 18px rgba(56, 189, 248, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(56, 189, 248, 0.55);
  color: #030712;
  text-decoration: none;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
  text-decoration: none;
}

.btn-hot {
  background: var(--gradient-hot);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(244, 63, 94, 0.35);
}
.btn-hot:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(244, 63, 94, 0.55);
  color: #ffffff;
}

.btn-lg {
  padding: 0.9rem 2rem;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   Hero Section - Asymmetric Split Tech Layout
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 4.5rem 0 5rem;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1.1rem;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 1.5rem;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.12);
}
.hero-badge-pulse {
  width: 8px;
  height: 8px;
  background: var(--emerald);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--emerald);
}

.hero-title {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 1.4rem;
  color: var(--text-primary);
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-desc {
  font-size: clamp(1rem, 1.3vw, 1.18rem);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 2.2rem;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.1rem;
  margin-bottom: 2.5rem;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
}
.trust-item svg {
  color: var(--emerald);
  flex-shrink: 0;
}

/* Hero Visual: Live Node Monitor Widget */
.hero-monitor {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-md), 0 0 40px rgba(56, 189, 248, 0.1);
  backdrop-filter: blur(20px);
  position: relative;
}
.hero-monitor::before {
  content: "";
  position: absolute;
  top: 0;
  left: 15%;
  right: 15%;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
}

.monitor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 1.2rem;
}
.monitor-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}
.status-dot {
  width: 9px;
  height: 9px;
  background: var(--emerald);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--emerald);
}
.monitor-status-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--emerald);
  border-radius: var(--radius-full);
}

.node-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.4rem;
}
.node-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.node-row:hover {
  background: rgba(56, 189, 248, 0.06);
  border-color: rgba(56, 189, 248, 0.2);
  transform: translateX(3px);
}
.node-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.node-flag {
  font-size: 1.25rem;
  line-height: 1;
}
.node-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}
.node-spec {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.node-latency {
  text-align: right;
}
.latency-num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--emerald);
}
.latency-state {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.monitor-footer-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}
.stat-box {
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-xs);
}
.stat-val {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--cyan);
}
.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* ==========================================================================
   Section Blocks & Headers
   ========================================================================== */
.section-block {
  padding: 5.5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.8rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid var(--border-subtle);
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   Core Advantages (3 Illustrated Cards)
   ========================================================================== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}
.feature-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 58px;
  height: 58px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  margin-bottom: 1.6rem;
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.15);
  transition: var(--transition);
}
.feature-card:hover .card-icon {
  background: var(--gradient-brand);
  color: #030712;
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.4);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.9rem;
}

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

.feature-points {
  list-style: none;
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.feature-point-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.feature-point-item svg {
  color: var(--emerald);
  flex-shrink: 0;
}

/* ==========================================================================
   Streaming & AI Support Section (2 Showcases)
   ========================================================================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.2rem;
}

.media-ai-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2.6rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.media-ai-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.media-ai-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.8rem;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  margin-bottom: 1.2rem;
}
.tag-streaming {
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #fb7185;
}
.tag-ai {
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: #c084fc;
}

.media-ai-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.media-ai-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.8rem;
}

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
}
.pill-badge:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.3);
  color: var(--cyan);
}
.pill-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--emerald);
  border-radius: 50%;
}

/* ==========================================================================
   Pricing Section: Cards + Comparison Table
   ========================================================================== */
.pricing-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.plan-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.6rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}
.plan-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.plan-card.plan-featured {
  background: linear-gradient(180deg, rgba(30, 48, 80, 0.7) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 35px rgba(56, 189, 248, 0.28);
  transform: scale(1.03);
  z-index: 2;
}
.plan-card.plan-featured:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow: 0 0 45px rgba(56, 189, 248, 0.4);
}

.featured-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: #030712;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 1.1rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.4);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.plan-card-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.plan-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.plan-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.plan-card-price {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-bottom: 1.5rem;
}
.price-symbol {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}
.price-amount {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}
.price-cycle {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 2rem;
  flex-grow: 1;
}
.plan-feature-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.plan-feature-row svg {
  color: var(--emerald);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Pricing Table (Semantic & Complete Comparison) */
.pricing-wrapper {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-md);
  margin-top: 2.5rem;
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 780px;
}

.pricing-table caption {
  padding: 1.2rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: left;
}

.pricing-table th, .pricing-table td {
  padding: 1.3rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.pricing-table th {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(255, 255, 255, 0.02);
}

.pricing-table tbody tr:hover {
  background: rgba(56, 189, 248, 0.04);
}

.plan-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.plan-price {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--cyan);
}
.plan-price small {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.badge-hot {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  background: var(--gradient-hot);
  color: #ffffff;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Customer Reviews Section
   ========================================================================== */
.review-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.review-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.review-header, .review-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.reviewer-avatar, .author-avatar {
  width: 46px;
  height: 46px;
  background: var(--gradient-brand);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #030712;
  font-size: 1.1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
}
.reviewer-name, .author-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}
.reviewer-title, .author-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.review-stars {
  display: flex;
  gap: 0.25rem;
  color: var(--amber);
  margin-bottom: 1.1rem;
  font-size: 0.95rem;
}

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

/* ==========================================================================
   FAQ Section (Accordion Panels with Details/Summary)
   ========================================================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  max-width: 880px;
  margin: 0 auto;
}

details.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.8rem;
  transition: var(--transition);
  border-left: 3px solid var(--cyan);
}
details.faq-item:hover {
  border-color: var(--border-glow);
  border-left-color: var(--cyan);
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.1);
}

summary.faq-question, details.faq-item summary {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  user-select: none;
}
summary.faq-question::-webkit-details-marker, details.faq-item summary::-webkit-details-marker {
  display: none;
}
summary.faq-question::after, details.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--cyan);
  transition: transform 0.25s ease;
  line-height: 1;
}
details[open] summary.faq-question::after, details.faq-item[open] summary::after {
  content: "−";
  color: var(--text-muted);
}

.faq-answer, .faq-content {
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ==========================================================================
   CTA Banner Box
   ========================================================================== */
.article-cta-box {
  background: var(--gradient-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 3.2rem 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}
.article-cta-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
}
.article-cta-box h3 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.9rem;
}
.article-cta-box p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background: #02050d;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 3.5rem 0 2.5rem;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  list-style: none;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.footer-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}
.footer-link:hover {
  color: var(--cyan);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Knowledge Base & Article Detail Layout
   ========================================================================== */
.knowledge-hero {
  padding: 4rem 0 3rem;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, rgba(56, 189, 248, 0.12) 0%, transparent 60%);
}
.knowledge-hero h1 {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 1rem;
}
.knowledge-hero p {
  font-size: 1.08rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 4rem;
}

.article-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.8rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}
.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}
.article-card-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(56, 189, 248, 0.1);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-xs);
  display: inline-block;
  margin-bottom: 1rem;
  align-self: flex-start;
}
.article-card-title {
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 0.85rem;
}
.article-card-title a {
  color: var(--text-primary);
}
.article-card-title a:hover {
  color: var(--cyan);
}
.article-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}
.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Article Detail Content */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-secondary);
}
.breadcrumb a:hover {
  color: var(--cyan);
}
.breadcrumb-sep {
  color: var(--text-muted);
}

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.article-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 1.2rem;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.article-meta-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #cbd5e1;
  max-width: 860px;
}
.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 2.5rem 0 1.2rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 1.8rem 0 0.9rem;
}
.article-body p {
  margin-bottom: 1.4rem;
}
.article-body ul, .article-body ol {
  margin: 1.2rem 0 1.5rem 1.8rem;
}
.article-body li {
  margin-bottom: 0.6rem;
}
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(56, 189, 248, 0.1);
  color: var(--cyan);
  padding: 0.2em 0.45em;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-subtle);
}
.article-body pre {
  background: #020617;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.article-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: #e2e8f0;
}

/* ==========================================================================
   Responsive Adaptations (@media Queries)
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-content {
    text-align: center;
  }
  .hero-badge-wrap {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-trust {
    justify-content: center;
  }
  .pricing-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  .plan-card.plan-featured {
    transform: none;
  }
  .plan-card.plan-featured:hover {
    transform: translateY(-6px);
  }
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .article-grid {
    grid-template-columns: 1fr;
  }
  .nav-menu {
    gap: 1.1rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }
  .section-block {
    padding: 3.8rem 0;
  }
  .nav-menu {
    display: none; /* Mobile clean navigation */
  }
  .hero-section {
    padding: 3rem 0 3.5rem;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-trust {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }
  .pricing-cards-grid {
    grid-template-columns: 1fr;
  }
  .footer-nav {
    flex-direction: column;
    gap: 1.2rem;
  }
  .monitor-footer-stats {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .node-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .node-latency {
    text-align: left;
    display: flex;
    gap: 0.6rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .hero-title {
    font-size: 1.85rem;
  }
  .feature-card, .media-ai-card, .plan-card, .review-card, .article-cta-box {
    padding: 1.8rem 1.4rem;
  }
  .pricing-table th, .pricing-table td {
    padding: 1rem 0.8rem;
  }
}