/* ==========================================================================
   自由猫 (FreeCat Cloud) 官方落地页样式表
   Domain: freecatcloud.homes
   Theme: 科技未来感 · 极速IEPL内网专线 · 自由猫机场全球加速
   ========================================================================== */

:root {
  --bg-dark: #070b14;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.9);
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  
  --primary: #00f2fe;
  --primary-hover: #38bdf8;
  --primary-glow: rgba(0, 242, 254, 0.35);
  
  --secondary: #8b5cf6;
  --secondary-hover: #a78bfa;
  --secondary-glow: rgba(139, 92, 246, 0.3);
  
  --accent-pink: #ec4899;
  --accent-green: #10b981;
  --accent-green-glow: rgba(16, 185, 129, 0.3);
  --accent-amber: #f59e0b;
  
  --text-main: #f8fafc;
  --text-sub: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 242, 254, 0.35);
  
  --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, "Liberation Mono", monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --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);
  --shadow-purple: 0 0 25px rgba(139, 92, 246, 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;
}

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 12% 18%, rgba(0, 242, 254, 0.07) 0%, transparent 40%),
    radial-gradient(circle at 88% 60%, rgba(139, 92, 246, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 85%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
    linear-gradient(180deg, #070b14 0%, #0a1122 50%, #070b14 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

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;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #0284c7 100%);
  color: #070b14;
  box-shadow: 0 4px 18px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #38bdf8 0%, #0369a1 100%);
  box-shadow: 0 6px 24px rgba(0, 242, 254, 0.5);
  transform: translateY(-2px);
  color: #040810;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #f1f5f9;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.btn-pulse {
  position: relative;
  overflow: hidden;
}

.btn-pulse::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.3) 10%, transparent 60%);
  opacity: 0;
  transform: scale(0.5);
  transition: transform 0.5s, opacity 0.5s;
}

.btn-pulse:hover::after {
  opacity: 1;
  transform: scale(1);
}

/* Badge & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background: rgba(0, 242, 254, 0.12);
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.3);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.15);
  color: #c4b5fd;
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.badge-green {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 4px 12px;
  background: rgba(0, 242, 254, 0.08);
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-title .text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, #818cf8 50%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 0;
  transition: var(--transition);
}

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

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

.brand-icon-box {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 0 10px rgba(0, 242, 254, 0.4));
  transition: transform 0.3s ease;
}

.brand-logo-wrap:hover .brand-icon-box {
  transform: rotate(-5deg) scale(1.05);
}

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

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.5px;
  line-height: 1.15;
}

.brand-tagline {
  font-size: 0.68rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: #cbd5e1;
  position: relative;
  padding: 6px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

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

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  padding: 4px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 100%;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 85px 0 70px;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: 10%;
  left: 5%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  top: 30%;
  right: 5%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-badge-wrap {
  margin-bottom: 22px;
}

.hero-title {
  font-size: 3.1rem;
  font-weight: 850;
  line-height: 1.2;
  color: #ffffff;
  margin-bottom: 22px;
  letter-spacing: -1px;
}

.hero-title .highlight {
  color: var(--primary);
  text-shadow: 0 0 20px var(--primary-glow);
}

.hero-subtitle {
  font-size: 1.15rem;
  color: #cbd5e1;
  line-height: 1.8;
  margin-bottom: 34px;
}

.hero-keywords-pill {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.kw-tag {
  font-size: 0.78rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #94a3b8;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.kw-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
}

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

.hero-trust-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: #cbd5e1;
}

.trust-item svg {
  color: var(--accent-green);
  flex-shrink: 0;
}

/* Hero Visual / Cyber Console */
.hero-visual-card {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 41, 59, 0.8) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6), var(--shadow-neon);
  position: relative;
  overflow: hidden;
}

.hero-visual-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
}

.console-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

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

.node-status-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.node-flag {
  font-size: 1.1rem;
}

.node-name {
  font-weight: 600;
  color: #f1f5f9;
}

.node-spec {
  font-size: 0.74rem;
  color: var(--text-muted);
}

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

.node-latency {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-green);
  font-size: 0.82rem;
}

.node-speed {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--primary);
  background: rgba(0, 242, 254, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}

.speed-metric-banner {
  margin-top: 18px;
  padding: 14px;
  background: rgba(0, 242, 254, 0.05);
  border: 1px dashed rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.metric-val {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
}

.metric-col:first-child .metric-val { color: var(--primary); }
.metric-col:last-child .metric-val { color: var(--accent-green); }

.metric-lbl {
  font-size: 0.72rem;
  color: var(--text-sub);
  margin-top: 2px;
}

/* Status / Stats Bar */
.status-bar-section {
  padding: 20px 0;
  background: rgba(15, 23, 42, 0.5);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.status-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.status-stat-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.stat-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(0, 242, 254, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.stat-text h4 {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.2;
}

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

/* Features Grid */
.features-section {
  padding: 90px 0;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 242, 254, 0.15);
  background: var(--bg-card-hover);
}

.feature-icon-box {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 22px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* Pricing Section */
.pricing-section {
  padding: 90px 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.3) 0%, rgba(7, 11, 20, 0.6) 100%);
  position: relative;
}

.pricing-controls {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.billing-switcher {
  display: inline-flex;
  background: rgba(15, 23, 42, 0.9);
  padding: 5px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
}

.switcher-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-sub);
  transition: var(--transition);
}

.switcher-btn.active {
  background: linear-gradient(135deg, var(--primary) 0%, #0284c7 100%);
  color: #070b14;
  box-shadow: 0 2px 10px var(--primary-glow);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 45px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-lg), var(--shadow-neon);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 2px solid var(--primary);
  box-shadow: 0 10px 30px rgba(0, 242, 254, 0.2);
}

.card-badge {
  position: absolute;
  top: -13px;
  right: 20px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #070b14;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.plan-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 4px;
}

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

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  margin: 16px 0 8px;
}

.price-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin-right: 2px;
}

.price-amount {
  font-size: 2.6rem;
  font-weight: 900;
  color: #ffffff;
  font-family: var(--font-mono);
  line-height: 1;
}

.price-period {
  font-size: 0.85rem;
  color: var(--text-sub);
  margin-left: 6px;
}

.plan-bandwidth {
  font-size: 0.88rem;
  font-weight: 700;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.plan-features-list {
  flex-grow: 1;
  margin-bottom: 24px;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: #cbd5e1;
  margin-bottom: 12px;
}

.plan-feature-item svg {
  color: var(--accent-green);
  flex-shrink: 0;
  margin-top: 3px;
}

/* Pricing Special / Non-Expiring Box */
.special-plans-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-top: 25px;
}

.special-plans-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.special-plan-card {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}

.special-plan-card:hover {
  border-color: var(--primary);
  background: rgba(0, 0, 0, 0.5);
}

.special-plan-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #f1f5f9;
}

.special-plan-traffic {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 600;
  margin: 4px 0 10px;
}

.special-plan-price {
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  font-family: var(--font-mono);
  margin-bottom: 12px;
}

/* Live Proof & Speedtest Showcase */
.proof-section {
  padding: 90px 0;
}

.proof-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.proof-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  overflow: hidden;
  transition: var(--transition);
}

.proof-card:hover {
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md);
}

.proof-card-header {
  margin-bottom: 16px;
}

.proof-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.proof-card-desc {
  font-size: 0.85rem;
  color: var(--text-sub);
}

.proof-img-wrap {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  max-height: 480px;
  overflow-y: auto;
}

.proof-img-wrap img {
  width: 100%;
  display: block;
}

/* Articles Section */
.articles-section {
  padding: 90px 0;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.8) 0%, rgba(15, 23, 42, 0.4) 100%);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.article-preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.article-preview-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 242, 254, 0.15);
}

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

.article-category {
  color: var(--primary);
  font-weight: 700;
}

.article-preview-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.45;
  margin-bottom: 12px;
}

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

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}

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

/* Reviews / Testimonials */
.reviews-section {
  padding: 90px 0;
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-4px);
}

.review-stars {
  display: flex;
  gap: 4px;
  color: #fbbf24;
  margin-bottom: 14px;
}

.review-content {
  font-size: 0.92rem;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #070b14;
  font-size: 1.1rem;
}

.author-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

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

/* FAQ Accordion */
.faq-section {
  padding: 90px 0;
  background: rgba(15, 23, 42, 0.3);
}

.faq-container {
  max-width: 820px;
  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:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 4px 18px rgba(0, 242, 254, 0.15);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
}

.faq-icon {
  width: 22px;
  height: 22px;
  transition: transform 0.3s ease;
  color: var(--primary);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-sub);
  font-size: 0.92rem;
  line-height: 1.75;
}

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

/* Article Detail Page Layout */
.article-header {
  padding: 70px 0 40px;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.9) 0%, rgba(15, 23, 42, 0.5) 100%);
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.breadcrumb-nav a {
  color: var(--text-sub);
}

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

.article-title {
  font-size: 2.35rem;
  font-weight: 850;
  color: #ffffff;
  line-height: 1.3;
  margin-bottom: 20px;
}

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

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

.article-layout {
  padding: 60px 0;
}

.article-content-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-body h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
}

.article-body h2::before {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--primary);
}

.article-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #f1f5f9;
  margin: 30px 0 14px;
}

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

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

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

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

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-body a:hover {
  color: #38bdf8;
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  background: rgba(0, 242, 254, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: #cbd5e1;
  font-style: italic;
}

.article-body .callout-box {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 30px 0;
}

.callout-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.92rem;
}

.article-body th, .article-body td {
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.article-body th {
  background: rgba(15, 23, 42, 0.9);
  color: #ffffff;
  font-weight: 700;
}

.article-body tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.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 {
  list-style: none;
  margin-bottom: 8px;
}

.toc-link {
  font-size: 0.88rem;
  color: var(--text-sub);
  display: block;
  text-decoration: none !important;
}

.toc-link:hover, .toc-link.active {
  color: var(--primary) !important;
}

.related-posts-list li {
  list-style: none;
  margin-bottom: 12px;
}

.related-post-link {
  font-size: 0.9rem;
  color: #cbd5e1;
  display: block;
  line-height: 1.45;
  text-decoration: none !important;
}

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

/* Footer Section */
.site-footer {
  background: #04070d;
  border-top: 1px solid var(--border-color);
  padding: 70px 0 30px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin-top: 14px;
}

.footer-heading {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
}

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

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

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

/* ==========================================================================
   【🔧 核心任务 2：页脚 PBN 权重精准输血管道（智能兼容老代码）】
   强制安全设置：包含 target="_blank"，绝对禁止 rel="nofollow"，保持纯粹 dofollow 状态
   ========================================================================== */
.pbn-pipeline-wrapper {
  margin: 30px auto 25px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.85rem;
  text-align: center;
}

.pbn-label {
  color: var(--text-muted);
  font-weight: 500;
}

.pbn-item-link {
  color: #cbd5e1;
  text-decoration: none;
  font-weight: 600;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  transition: var(--transition);
}

.pbn-item-link:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(0, 242, 254, 0.08);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.pbn-sep {
  color: rgba(255, 255, 255, 0.15);
}

/* Footer Bottom Bar */
.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);
}

/* Responsive Media Queries */
@media (max-width: 1200px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .special-plans-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .article-content-container {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 12px 0;
  }
  
  .main-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: #070b14;
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    box-shadow: 0 16px 30px rgba(0,0,0,0.8);
  }
  
  .main-nav.show {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .section-title {
    font-size: 1.85rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .special-plans-grid {
    grid-template-columns: 1fr;
  }
  
  .proof-grid {
    grid-template-columns: 1fr;
  }
  
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  
  .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;
  }
}