/* ==========================================================================
   CyberGuard Official Landing Page Stylesheet
   Domain: cyber-guard.homes
   Theme: High-Tech Cyber Security & Ultra-Fast Global Acceleration Network
   ========================================================================== */

:root {
  --bg-dark: #070b12;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  
  --primary: #00f2fe;
  --primary-hover: #38bdf8;
  --primary-glow: rgba(0, 242, 254, 0.35);
  
  --secondary: #6366f1;
  --secondary-glow: rgba(99, 102, 241, 0.3);
  
  --accent-green: #10b981;
  --accent-green-glow: rgba(16, 185, 129, 0.3);
  
  --text-main: #f8fafc;
  --text-sub: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 242, 254, 0.3);
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.6);
  --shadow-neon: 0 0 25px rgba(0, 242, 254, 0.25);
  
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 242, 254, 0.06) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(99, 102, 241, 0.06) 0%, transparent 45%),
    linear-gradient(180deg, #070b12 0%, #0b111d 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  width: 100%;
}

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

ul, ol {
  list-style: none;
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 11, 18, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon-box {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.2), rgba(99, 102, 241, 0.2));
  border: 1px solid rgba(0, 242, 254, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.2);
}

.brand-icon-box svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 2;
}

.brand-text-group {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(120deg, #ffffff 30%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  font-size: 0.72rem;
  color: var(--text-sub);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-sub);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link:hover::after, .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #0284c7 100%);
  color: #03101c;
  box-shadow: 0 4px 18px var(--primary-glow);
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 242, 254, 0.5);
  background: linear-gradient(135deg, #38bdf8 0%, #0369a1 100%);
  color: #03101c;
}

.btn-outline {
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-main);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 242, 254, 0.06);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.84rem;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 85px 0 60px;
  overflow: hidden;
  text-align: center;
}

.hero-glow-sphere {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 350px;
  background: radial-gradient(ellipse at center, rgba(0, 242, 254, 0.12) 0%, rgba(99, 102, 241, 0.05) 50%, transparent 70%);
  filter: blur(50px);
  z-index: -1;
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #00f2fe 0%, #38bdf8 50%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.18rem);
  color: var(--text-sub);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-trust-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  max-width: 900px;
  margin: 0 auto;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-sub);
}

.trust-item svg {
  width: 18px;
  height: 18px;
  stroke: var(--primary);
  fill: none;
}

/* Live Status & Speed Bar */
.status-bar-section {
  padding: 20px 0;
  margin-bottom: 40px;
}

.status-bar-inner {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
}

.status-metrics {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.metric-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  background: rgba(255, 255, 255, 0.04);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.metric-val {
  color: var(--primary);
  font-weight: 700;
  font-family: var(--font-mono);
}

/* Section Header Shared */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-desc {
  font-size: 1.02rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* Features Grid */
.features-section {
  padding: 70px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}

.feature-icon svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
}

.feature-text {
  font-size: 0.94rem;
  color: var(--text-sub);
  line-height: 1.65;
}

/* Pricing Section */
.pricing-section {
  padding: 80px 0;
  position: relative;
}

.pricing-notice {
  background: rgba(0, 242, 254, 0.05);
  border: 1px solid rgba(0, 242, 254, 0.2);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 0 auto 40px;
  max-width: 860px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9rem;
  color: var(--text-sub);
}

.pricing-notice svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  stroke: var(--primary);
  fill: none;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  align-items: stretch;
}

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

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

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.12) 0%, rgba(15, 23, 42, 0.8) 100%);
  border: 2px solid var(--primary);
  box-shadow: 0 0 30px rgba(0, 242, 254, 0.15);
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--primary), #0284c7);
  color: #03101c;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.plan-header {
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 20px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: #ffffff;
}

.plan-desc {
  font-size: 0.84rem;
  color: var(--text-sub);
  min-height: 38px;
}

.price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-top: 16px;
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

.amount {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: #ffffff;
  font-family: var(--font-mono);
}

.period {
  font-size: 0.92rem;
  color: var(--text-sub);
  margin-left: 4px;
}

.plan-traffic-highlight {
  display: inline-block;
  margin-top: 12px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.plan-features {
  flex-grow: 1;
  margin-bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-sub);
}

.plan-feature-item svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent-green);
  flex-shrink: 0;
  margin-top: 2px;
  fill: none;
}

.plan-cta {
  margin-top: auto;
}

.plan-cta .btn {
  width: 100%;
}

/* Nodes & Protocols Section */
.tech-spec-section {
  padding: 70px 0;
  background: rgba(11, 17, 29, 0.6);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

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

.node-filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.node-filter-btn {
  padding: 7px 15px;
  border-radius: var(--radius-full);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-sub);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: var(--transition);
}

.node-filter-btn:hover {
  color: #ffffff;
  border-color: rgba(0, 242, 254, 0.3);
  background: rgba(0, 242, 254, 0.08);
}

.node-filter-btn.active {
  color: #03101c;
  background: linear-gradient(135deg, var(--primary), #38bdf8);
  border-color: var(--primary);
  font-weight: 700;
  box-shadow: 0 2px 10px var(--primary-glow);
}

.node-search-box {
  position: relative;
  min-width: 260px;
}

.node-search-box svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  stroke: var(--text-muted);
  pointer-events: none;
}

.node-search-input {
  width: 100%;
  padding: 8px 14px 8px 36px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: #ffffff;
  font-size: 0.85rem;
  outline: none;
  transition: var(--transition);
}

.node-search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.2);
  background: rgba(15, 23, 42, 0.95);
}

.nodes-stats-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.nodes-matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 14px;
  margin-bottom: 36px;
  max-height: 720px;
  overflow-y: auto;
  padding-right: 6px;
}

/* Custom Scrollbar for Nodes Grid */
.nodes-matrix-grid::-webkit-scrollbar {
  width: 6px;
}

.nodes-matrix-grid::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 4px;
}

.nodes-matrix-grid::-webkit-scrollbar-thumb {
  background: rgba(0, 242, 254, 0.25);
  border-radius: 4px;
}

.nodes-matrix-grid::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 242, 254, 0.5);
}

.node-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.node-card:hover {
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.node-info-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.node-flag {
  font-size: 0.88rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 32px;
  border-radius: 6px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--primary);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.node-details-wrap {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.node-city {
  font-weight: 700;
  font-size: 0.92rem;
  color: #ffffff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.node-type {
  font-size: 0.74rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.node-status-right {
  text-align: right;
  flex-shrink: 0;
  margin-left: 10px;
}

.node-ping {
  font-size: 0.84rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent-green);
}

.node-load {
  font-size: 0.72rem;
  color: var(--text-muted);
}

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

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

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

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.article-tag {
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
  line-height: 1.45;
}

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

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 16px;
  font-size: 0.88rem;
}

.article-read-more {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-read-more:hover {
  gap: 10px;
}

/* Reviews Section (用户评价) */
.reviews-section {
  padding: 80px 0;
  background: rgba(11, 17, 29, 0.4);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(0, 242, 254, 0.25);
  transform: translateY(-3px);
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e293b, #334155);
  border: 2px solid rgba(0, 242, 254, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
}

.user-details {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: #ffffff;
}

.user-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.star-rating {
  color: #f59e0b;
  letter-spacing: 2px;
  font-size: 0.92rem;
}

.review-content {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 14px;
}

.review-tag {
  display: inline-block;
  font-size: 0.74rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* FAQ Section (常见问题) */
.faq-section {
  padding: 80px 0;
}

.faq-container {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--border-highlight);
}

.faq-question {
  width: 100%;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  background: none;
}

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

.faq-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  stroke: var(--text-muted);
  transition: transform 0.3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 24px;
  font-size: 0.94rem;
  color: var(--text-sub);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  padding: 0 24px 22px;
  max-height: 400px;
}

/* Bottom CTA Banner */
.bottom-cta-section {
  padding: 70px 0 90px;
}

.bottom-cta-box {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(99, 102, 241, 0.12) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-lg);
  padding: 56px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.bottom-cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 16px;
  color: #ffffff;
}

.bottom-cta-desc {
  font-size: 1.05rem;
  color: var(--text-sub);
  max-width: 650px;
  margin: 0 auto 32px;
}

/* Footer Section */
.site-footer {
  background: #05080e;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 35px;
  color: var(--text-muted);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col-brand .brand-logo-wrap {
  margin-bottom: 16px;
}

.footer-col-brand p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 20px;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links-list li {
  margin-bottom: 10px;
}

.footer-link {
  font-size: 0.86rem;
  color: var(--text-sub);
}

.footer-link:hover {
  color: var(--primary);
  padding-left: 3px;
}

/* Footer Bottom Copyright */
.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Article Template Specific Styles */
.article-page-header {
  padding: 50px 0 30px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(11, 17, 29, 0.4);
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

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

.article-main-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.3;
  margin-bottom: 18px;
}

.article-post-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-sub);
  flex-wrap: wrap;
}

.article-content-container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  padding: 50px 0 80px;
}

.article-body {
  font-size: 1.02rem;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: #ffffff;
  margin: 40px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  scroll-margin-top: 90px;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #f1f5f9;
  margin: 28px 0 14px;
  scroll-margin-top: 90px;
}

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

.article-body ul, .article-body ol {
  margin: 16px 0 24px 20px;
}

.article-body li {
  margin-bottom: 8px;
  list-style-type: disc;
}

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

.article-body strong {
  color: #ffffff;
  font-weight: 700;
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(0, 242, 254, 0.05);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #e2e8f0;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.92rem;
}

.article-body th, .article-body td {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  text-align: left;
}

.article-body th {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  font-weight: 700;
}

.article-body td {
  background: rgba(15, 23, 42, 0.4);
}

.article-body code {
  background: rgba(255, 255, 255, 0.08);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.article-body pre {
  background: #090e17;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  margin: 20px 0;
}

.article-body pre code {
  background: none;
  padding: 0;
  color: #e2e8f0;
}

.article-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

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

.sidebar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.toc-list li {
  margin-bottom: 8px;
}

.toc-link {
  font-size: 0.88rem;
  color: var(--text-sub);
}

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

.related-posts-list li {
  margin-bottom: 12px;
}

.related-post-link {
  font-size: 0.9rem;
  color: #cbd5e1;
  display: block;
  line-height: 1.45;
}

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

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .article-content-container {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .site-header .container {
    height: 64px;
  }

  .brand-tagline {
    display: none;
  }

  .brand-title {
    font-size: 1.15rem;
  }

  .header-actions .btn {
    display: none;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: #070b12;
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    box-shadow: var(--shadow-lg);
  }
  
  .main-nav.show {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }

  .hero-section {
    padding: 40px 0 24px;
  }

  .hero-title {
    font-size: 1.55rem;
    line-height: 1.35;
    word-break: break-word;
    overflow-wrap: break-word;
  }

  .hero-desc {
    font-size: 0.95rem;
    line-height: 1.65;
    margin-bottom: 24px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero-cta-group .btn {
    width: 100%;
  }
  
  .hero-trust-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding-top: 18px;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .pricing-card {
    padding: 28px 20px;
  }
  
  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
  }
  
  .status-bar-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-title {
    font-size: 1.45rem;
    line-height: 1.35;
    word-break: break-word;
    overflow-wrap: break-word;
  }

  .status-metrics {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .metric-pill {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
    padding: 8px 14px;
  }
}