/* ===================================================================
   Nexitally 奶昔机场官网落地页 - Clean Modern Tech 视觉系统
   Domain: nexitallysecure.homes
   Theme: High-End Airport / Network Accelerator (Clean Tech Navy & Cyan)
   Style: Ultra-clean, modern, trustworthy, zero-dairy elements
   =================================================================== */

:root {
  /* Color Palette */
  --bg-base: #f8fafc;               /* 清爽科技浅灰白底色 */
  --bg-card: #ffffff;               /* 白瓷卡片底色 */
  --bg-card-hover: #ffffff;
  
  --primary-blue: #2563eb;          /* 科技深蓝 */
  --primary-blue-dark: #1d4ed8;     /* 悬停深蓝 */
  --primary-blue-light: #eff6ff;    /* 浅蓝底色 */
  --primary-blue-glow: rgba(37, 99, 235, 0.25);

  --accent-cyan: #0ea5e9;           /* 极速高亮青蓝 */
  --accent-cyan-light: #f0f9ff;
  --accent-purple: #8b5cf6;         /* 商务紫 */
  --accent-green: #10b981;          /* 稳定测速全绿 */
  --accent-green-light: #ecfdf5;
  --accent-red: #ef4444;            /* 警告/高光红 */
  --accent-gold: #f59e0b;           /* 金牌品质 */

  --text-main: #0f172a;             /* 极度清晰深灰黑 */
  --text-muted: #475569;            /* 优雅次级文本 */
  --text-dim: #94a3b8;              /* 辅助说明 */

  --border-light: rgba(226, 232, 240, 0.9);
  --border-card: #e2e8f0;
  --border-active: #3b82f6;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 25px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.15);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Background Canvas */
#dynamic-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
}

.container {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 880px;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 0.96rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.45);
  color: #ffffff;
}

.btn-secondary {
  background: #ffffff;
  color: #1e293b;
  border-color: #cbd5e1;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: #f8fafc;
  border-color: #94a3b8;
  color: #0f172a;
  transform: translateY(-2px);
}

.btn-glow {
  background: linear-gradient(135deg, #7c3aed 0%, #6366f1 100%);
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.35);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(124, 58, 237, 0.45);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.86rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.08rem;
}

.btn-pulse {
  animation: tech-pulse 2.2s infinite;
}

@keyframes tech-pulse {
  0% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.5); }
  70% { box-shadow: 0 0 0 12px rgba(37, 99, 235, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.badge-blue {
  background: #eff6ff;
  color: #2563eb;
  border: 1px solid #bfdbfe;
}

.badge-cyan {
  background: #f0f9ff;
  color: #0284c7;
  border: 1px solid #bae6fd;
}

.badge-green {
  background: #ecfdf5;
  color: #059669;
  border: 1px solid #a7f3d0;
}

.badge-purple {
  background: #f5f3ff;
  color: #7c3aed;
  border: 1px solid #ddd6fe;
}

.badge-gold {
  background: #fffbeb;
  color: #d97706;
  border: 1px solid #fde68a;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  padding: 16px 0;
  transition: all 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
  padding: 12px 0;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon-box {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
}

.logo-icon-box img {
  width: 28px;
  height: 28px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.3rem;
  font-weight: 900;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.logo-subtitle {
  font-size: 0.7rem;
  color: #2563eb;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 26px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 600;
  transition: all 0.2s ease;
  position: relative;
  padding: 6px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2.5px;
  background: var(--primary-blue);
  border-radius: var(--radius-pill);
  transition: width 0.25s ease;
}

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

.menu-toggle {
  display: none;
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  border-radius: var(--radius-sm);
  padding: 8px;
  color: #0f172a;
  cursor: pointer;
}

/* ===================================================================
   HERO SECTION - CLEAN TECH NETWORK TELEMETRY
   =================================================================== */
.hero-section {
  padding: 70px 0 50px;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: #ffffff;
  border: 1px solid #bfdbfe;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.08);
  color: #1e40af;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-pill .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 900;
  color: #0f172a;
  line-height: 1.18;
  letter-spacing: -0.025em;
  margin-bottom: 22px;
}

.hero-desc {
  max-width: 820px;
  margin: 0 auto 36px;
  font-size: clamp(1.05rem, 2vw, 1.22rem);
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===================================================================
   HERO TELEMETRY DASHBOARD CARD (Replaces the milk bottle)
   =================================================================== */
.hero-telemetry-card {
  max-width: 840px;
  margin: 0 auto 40px;
  background: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  text-align: left;
}

.telemetry-card-header {
  background: #0f172a;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #ffffff;
}

.telemetry-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 700;
}

.telemetry-dots {
  display: flex;
  gap: 6px;
}

.telemetry-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.telemetry-dot-red { background: #ef4444; }
.telemetry-dot-yellow { background: #f59e0b; }
.telemetry-dot-green { background: #10b981; }

.telemetry-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #34d399;
}

.telemetry-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 20px;
  gap: 16px;
  background: #ffffff;
}

.telemetry-node-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.2s ease;
}

.telemetry-node-item:hover {
  border-color: #3b82f6;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

.telemetry-node-title {
  font-size: 0.88rem;
  font-weight: 800;
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.telemetry-node-ping {
  font-size: 1.15rem;
  font-weight: 900;
  color: #059669;
}

.telemetry-node-meta {
  font-size: 0.74rem;
  color: var(--text-dim);
}

.telemetry-footer-bar {
  background: #f1f5f9;
  border-top: 1px solid #e2e8f0;
  padding: 12px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: #475569;
  flex-wrap: wrap;
  gap: 12px;
}

.telemetry-feature-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: #1e293b;
}

/* Keyword Cloud */
.hero-keywords-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

.keyword-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.84rem;
  font-weight: 600;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-pill);
  color: #334155;
  text-decoration: none;
  transition: all 0.22s ease;
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.04);
}

.keyword-tag:hover {
  background: #eff6ff;
  border-color: #3b82f6;
  color: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.15);
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 45px;
  flex-wrap: wrap;
}

/* ===================================================================
   METRIC STATS GRID (Clean Tech Telemetry)
   =================================================================== */
.stats-section {
  padding: 20px 0 50px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: #3b82f6;
  box-shadow: var(--shadow-md);
}

.stat-num {
  font-size: 2.3rem;
  font-weight: 900;
  color: #1d4ed8;
  line-height: 1.1;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.92rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 2px;
}

.stat-sub {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-subtitle {
  color: #2563eb;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 10px;
  display: inline-block;
  background: #eff6ff;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid #bfdbfe;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  color: #0f172a;
  margin-bottom: 14px;
}

.section-desc {
  max-width: 680px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* Features Grid */
.features-section {
  padding: 70px 0;
  background: rgba(248, 250, 252, 0.7);
  backdrop-filter: blur(8px);
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

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

.feature-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: #3b82f6;
  box-shadow: var(--shadow-md);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
}

.feature-card h3 {
  font-size: 1.25rem;
  color: #0f172a;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
}

/* Nodes Section */
.nodes-section {
  padding: 70px 0;
}

.nodes-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.node-status-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 20px 18px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.node-status-card:hover {
  border-color: #3b82f6;
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.node-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.node-flag-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: #0f172a;
}

.node-status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.node-metrics {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px dashed #cbd5e1;
  padding-top: 10px;
}

.node-metric-val {
  color: #2563eb;
  font-weight: 800;
}

/* ===================================================================
   PRICING SECTION: 所有价格同排 (ALL PRICING IN ONE ROW)
   =================================================================== */
.pricing-section {
  padding: 80px 0 90px;
  background: rgba(248, 250, 252, 0.7);
  backdrop-filter: blur(8px);
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.pricing-row-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch; /* All cards in one row have equal height */
}

.pricing-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 32px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: #3b82f6;
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border: 2.5px solid #2563eb;
  background: linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
  box-shadow: 0 16px 36px rgba(37, 99, 235, 0.18);
  transform: scale(1.02);
}

.pricing-card.popular:hover {
  transform: scale(1.02) translateY(-8px);
}

.popular-ribbon {
  position: absolute;
  top: 12px;
  right: 12px;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 900;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  box-shadow: 0 3px 8px rgba(37, 99, 235, 0.3);
  letter-spacing: 0.04em;
}

.pricing-plan-name {
  font-size: 1.35rem;
  font-weight: 900;
  color: #0f172a;
  margin-top: 6px;
  margin-bottom: 6px;
}

.pricing-plan-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  min-height: 42px;
  margin-bottom: 16px;
  line-height: 1.5;
}

.pricing-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 6px;
  padding-bottom: 14px;
  border-bottom: 1.5px dashed #cbd5e1;
}

.price-currency {
  font-size: 1.3rem;
  font-weight: 800;
  color: #2563eb;
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: #0f172a;
}

.price-unit {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.price-billing-cycle {
  font-size: 0.8rem;
  color: #059669;
  font-weight: 700;
  margin-bottom: 20px;
}

.pricing-features-list {
  list-style: none;
  margin-bottom: 26px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-main);
  margin-bottom: 12px;
  line-height: 1.45;
}

.pricing-feature-item .icon-check {
  color: #10b981;
  font-weight: 900;
  flex-shrink: 0;
}

.pricing-feature-item .icon-cross {
  color: var(--text-dim);
  flex-shrink: 0;
}

.pricing-btn {
  width: 100%;
}

/* Articles Section */
.articles-section {
  padding: 80px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: #3b82f6;
  box-shadow: var(--shadow-md);
}

.article-card-cover {
  width: 100%;
  height: 160px;
  background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
  border-bottom: 1.5px solid #e2e8f0;
}

.article-card-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 10px;
  font-weight: 600;
}

.article-title {
  font-size: 1.15rem;
  color: #0f172a;
  margin-bottom: 10px;
  line-height: 1.45;
  transition: color 0.2s ease;
}

.article-card:hover .article-title {
  color: #2563eb;
}

.article-snippet {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.65;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px dashed #cbd5e1;
  padding-top: 12px;
  font-size: 0.84rem;
  color: #2563eb;
  font-weight: 700;
}

/* User Reviews Section */
.reviews-section {
  padding: 80px 0;
  background: rgba(248, 250, 252, 0.7);
  backdrop-filter: blur(8px);
  border-top: 1px solid #e2e8f0;
}

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

.review-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

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

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #ffffff;
  font-size: 1.1rem;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
}

.review-user-name {
  font-weight: 800;
  font-size: 1rem;
  color: #0f172a;
}

.review-user-title {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.review-stars {
  color: #f59e0b;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.92rem;
  color: var(--text-main);
  line-height: 1.7;
}

.review-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.74rem;
  font-weight: 700;
  color: #059669;
  margin-top: 14px;
}

/* FAQ Accordion */
.faq-section {
  padding: 80px 0 100px;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.faq-item.active {
  border-color: #3b82f6;
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 22px 26px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-question:hover {
  color: #2563eb;
}

.faq-icon {
  font-size: 1.4rem;
  transition: transform 0.3s ease;
  color: #2563eb;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: #ef4444;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 26px;
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 26px 24px;
}

/* Outbound Clients */
.clients-section {
  padding: 70px 0;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(8px);
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: #ffffff;
  border: 1.5px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 20px;
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-sm);
}

.client-card:hover {
  border-color: #3b82f6;
  background: #eff6ff;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.client-icon {
  font-size: 32px;
  flex-shrink: 0;
}

.client-info h4 {
  font-size: 1rem;
  color: #0f172a;
  margin-bottom: 4px;
}

.client-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Article Detail Styles */
.article-header {
  padding: 50px 0 35px;
  text-align: center;
  border-bottom: 1.5px dashed #cbd5e1;
  margin-bottom: 40px;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-main);
}

.article-content h2 {
  font-size: 1.8rem;
  color: #0f172a;
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid #eff6ff;
}

.article-content h3 {
  font-size: 1.35rem;
  color: #1d4ed8;
  margin: 30px 0 14px;
}

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

.article-content ul, .article-content ol {
  margin: 18px 0 24px 28px;
}

.article-content li {
  margin-bottom: 10px;
}

.article-content a {
  color: #2563eb;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-content a:hover {
  color: #1d4ed8;
}

.article-content blockquote {
  border-left: 4px solid #2563eb;
  background: #eff6ff;
  padding: 18px 24px;
  margin: 28px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: #1e3a8a;
  font-style: italic;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  background: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1.5px solid #e2e8f0;
}

.article-content th, .article-content td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.92rem;
}

.article-content th {
  background: #eff6ff;
  font-weight: 800;
  color: #1e3a8a;
}

.article-cta-box {
  background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);
  border: 2px dashed #3b82f6;
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  margin: 50px 0;
  box-shadow: var(--shadow-sm);
}

.related-articles-box {
  margin: 40px 0;
  padding: 28px;
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1.5px solid #e2e8f0;
  box-shadow: var(--shadow-sm);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
}

.breadcrumb-separator {
  color: var(--text-dim);
}

/* Mobile Bottom Sticky Bar */
.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1.5px solid #2563eb;
  padding: 12px 18px;
  z-index: 999;
  box-shadow: 0 -4px 20px rgba(15, 23, 42, 0.1);
  justify-content: space-between;
  align-items: center;
}

.mobile-bottom-bar .price-hint {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.mobile-bottom-bar .price-hint strong {
  color: #2563eb;
  font-size: 1.15rem;
}

/* Site Footer */
.site-footer {
  background: #0f172a;
  border-top: 1px solid #1e293b;
  padding: 70px 0 30px;
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1.05rem;
  margin-bottom: 18px;
  font-weight: 800;
}

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

.footer-link {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.2s ease;
  font-size: 0.88rem;
  font-weight: 500;
}

.footer-link:hover {
  color: #38bdf8;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  font-size: 0.84rem;
  color: #64748b;
  flex-wrap: wrap;
  gap: 16px;
}

/* ===================================================================
   RESPONSIVE DESIGN & MOBILE ADAPTATION
   =================================================================== */
@media (max-width: 1200px) {
  .pricing-row-container {
    gap: 14px;
  }
  .pricing-card {
    padding: 24px 16px;
  }
  .price-amount {
    font-size: 2.3rem;
  }
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nodes-matrix {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .telemetry-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-row-container {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 30px 24px;
    gap: 20px;
    border-bottom: 2px solid #2563eb;
    transform: translateY(-150%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .hero-section {
    padding: 40px 0 20px;
  }

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

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

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

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

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .telemetry-card-grid {
    grid-template-columns: 1fr;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .mobile-bottom-bar {
    display: flex;
  }

  body {
    padding-bottom: 74px;
  }
}