/* ==========================================================================
   WuXXNet 网络 (wuxxnet.homes) - 官方极速落地页纯原生CSS样式表
   零外部依赖 | 毫秒级秒开 | 动态背景 | 响应式全端自适应
   ========================================================================== */

:root {
  --bg-main: #060913;
  --bg-secondary: #0b1120;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(16, 185, 129, 0.35);
  
  --primary-emerald: #10b981;
  --primary-emerald-hover: #059669;
  --primary-cyan: #06b6d4;
  --primary-blue: #3b82f6;
  --accent-gold: #f59e0b;
  
  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-glow-emerald: 0 0 25px rgba(16, 185, 129, 0.25);
  --shadow-glow-cyan: 0 0 25px rgba(6, 182, 212, 0.25);
  --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.5);
  
  --container-max: 1380px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* ==========================================================================
   动态背景系统 (Dynamic Animated Background - 纯CSS高效GPU加速)
   ========================================================================== */
.dynamic-bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

/* 呼吸流光球 1：翡翠霓虹 */
.breeze-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.22;
  will-change: transform;
}

.breeze-orb-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #10b981 0%, rgba(16, 185, 129, 0) 70%);
  top: -150px;
  left: -100px;
  animation: floatOrb1 18s ease-in-out infinite alternate;
}

.breeze-orb-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, #06b6d4 0%, rgba(6, 182, 212, 0) 70%);
  top: 30%;
  right: -200px;
  animation: floatOrb2 22s ease-in-out infinite alternate;
}

.breeze-orb-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #3b82f6 0%, rgba(59, 130, 246, 0) 70%);
  bottom: -150px;
  left: 25%;
  animation: floatOrb3 20s ease-in-out infinite alternate;
}

/* 科技几何网格层 */
.cyber-grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.1) 85%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.1) 85%);
}

/* 动态光束扫过效果 */
.cyber-scanline {
  position: absolute;
  top: 0;
  left: -100%;
  width: 300%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.6), rgba(6, 182, 212, 0.8), transparent);
  animation: scanlineMove 9s linear infinite;
  opacity: 0.35;
}

@keyframes floatOrb1 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(120px, 80px) scale(1.15); }
  100% { transform: translate(40px, 160px) scale(0.95); }
}

@keyframes floatOrb2 {
  0% { transform: translate(0, 0) scale(1.1); }
  50% { transform: translate(-100px, 120px) scale(0.9); }
  100% { transform: translate(-150px, -60px) scale(1.2); }
}

@keyframes floatOrb3 {
  0% { transform: translate(0, 0) scale(0.9); }
  50% { transform: translate(80px, -80px) scale(1.1); }
  100% { transform: translate(-60px, 40px) scale(1); }
}

@keyframes scanlineMove {
  0% { transform: translateY(0); opacity: 0; }
  20% { opacity: 0.4; }
  80% { opacity: 0.4; }
  100% { transform: translateY(100vh); opacity: 0; }
}

/* ==========================================================================
   动态背景：悠闲吃草的奶牛动效系统 (Grazing Cow Animation - 放大清晰版)
   ========================================================================== */
.bg-cow-pasture {
  position: absolute;
  bottom: 12px;
  right: 4%;
  width: 480px;
  height: 330px;
  z-index: 2;
  pointer-events: none;
  filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.65));
  opacity: 0.95;
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.bg-cow-svg {
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 1200px) {
  .bg-cow-pasture {
    width: 420px;
    height: 290px;
    right: 3%;
    bottom: 10px;
  }
}

@media (max-width: 900px) {
  .bg-cow-pasture {
    width: 340px;
    height: 234px;
    right: 2%;
    bottom: 8px;
    opacity: 0.85;
  }
}

@media (max-width: 600px) {
  .bg-cow-pasture {
    width: 260px;
    height: 178px;
    right: 8px;
    bottom: 6px;
    opacity: 0.78;
  }
}

/* ==========================================================================
   容器与通用排版
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

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

.text-gradient {
  background: linear-gradient(135deg, #10b981 0%, #06b6d4 50%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-gradient-gold {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

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

.badge-cyan {
  background: rgba(6, 182, 212, 0.12);
  color: #38bdf8;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.badge-pulse::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 10px #10b981;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

/* ==========================================================================
   按钮系统 (严格遵从 nofollow & target="_blank" 规范)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  outline: none;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(16, 185, 129, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-cyan {
  background: linear-gradient(135deg, #06b6d4 0%, #0284c7 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(6, 182, 212, 0.35);
}

.btn-cyan:hover {
  background: linear-gradient(135deg, #38bdf8 0%, #06b6d4 100%);
  box-shadow: 0 6px 24px rgba(6, 182, 212, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: #e2e8f0;
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   顶部导航栏 (Navbar) - 左侧带高精度SVG Logo
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(6, 9, 19, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-smooth);
}

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

.brand-logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo-img {
  height: 44px;
  width: auto;
  max-width: 250px;
  object-fit: contain;
}

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

.nav-link {
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
  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, #10b981, #06b6d4);
  border-radius: 2px;
}

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

.nav-menu-btn {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero 首屏视觉区
   ========================================================================== */
.hero-section {
  padding: 70px 0 60px;
  position: relative;
}

.hero-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 980px;
  margin: 0 auto;
}

.hero-badge-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.22rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 34px;
  max-width: 820px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 42px;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--text-muted);
  font-size: 0.86rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-guarantee span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-guarantee svg {
  width: 16px;
  height: 16px;
  color: var(--primary-emerald);
}

/* 实时遥测指标条 */
.telemetry-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  width: 100%;
  margin-top: 45px;
  padding: 22px 26px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-right: 1px solid var(--border-subtle);
  padding: 0 10px;
}

.telemetry-item:last-child {
  border-right: none;
}

.telemetry-num {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.telemetry-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ==========================================================================
   价格方案区 (所有价格要同排 - 核心要求)
   ========================================================================== */
.pricing-section {
  padding: 85px 0 65px;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 50px;
}

.section-badge {
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* 核心要求：所有价格同排展示 */
.pricing-row-wrapper {
  width: 100%;
  overflow-x: auto;
  padding-bottom: 20px;
  -webkit-overflow-scrolling: touch;
}

/* 6列同排网格：清风、乘风、破风、御风、信风、长风 */
.pricing-row-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(200px, 1fr));
  gap: 16px;
  align-items: stretch;
  min-width: 1140px; /* 保证在小屏横向平滑滚动时各卡片同排对齐不挤压变形 */
}

.pricing-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 18px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(14px);
  transition: all var(--transition-smooth);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(16, 185, 129, 0.45);
  box-shadow: 0 16px 36px -10px rgba(0, 0, 0, 0.6), var(--shadow-glow-emerald);
}

.pricing-card.featured {
  border-color: var(--primary-emerald);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.1) 0%, rgba(15, 23, 42, 0.85) 100%);
  box-shadow: 0 10px 30px -5px rgba(16, 185, 129, 0.2);
}

.pricing-card-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  box-shadow: 0 2px 10px rgba(16, 185, 129, 0.4);
}

.pricing-card-badge.badge-gold {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  box-shadow: 0 2px 10px rgba(245, 158, 11, 0.4);
}

.pricing-card-badge.badge-blue {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.4);
}

.plan-header {
  text-align: center;
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
}

.plan-sub {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.plan-price-box {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  margin-top: 10px;
}

.plan-currency {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-emerald);
}

.plan-amount {
  font-size: 2.1rem;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: -0.5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.plan-period {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: 2px;
}

.plan-traffic-highlight {
  display: inline-block;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #38bdf8;
  margin-top: 8px;
}

.plan-features {
  list-style: none;
  margin: 16px 0 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.4;
}

.plan-features li svg {
  width: 15px;
  height: 15px;
  color: var(--primary-emerald);
  flex-shrink: 0;
  margin-top: 2px;
}

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

.pricing-tip-banner {
  margin-top: 26px;
  background: rgba(16, 185, 129, 0.07);
  border: 1px dashed rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  text-align: center;
  font-size: 0.88rem;
  color: #6ee7b7;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

/* ==========================================================================
   核心优势卡片 (Features Grid)
   ========================================================================== */
.features-section {
  padding: 75px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  backdrop-filter: blur(12px);
  transition: all var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(6, 182, 212, 0.4);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary-emerald);
}

.feature-icon-wrapper svg {
  width: 26px;
  height: 26px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #ffffff;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   节点分布与测速表现 (Nodes & Speed Section)
   ========================================================================== */
.nodes-section {
  padding: 75px 0;
}

.nodes-matrix {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
  overflow-x: auto;
}

.node-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.node-table th {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.node-table td {
  padding: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  white-space: nowrap;
}

.node-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
  color: #ffffff;
}

.node-name-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: #ffffff;
}

.flag-icon {
  font-size: 1.25rem;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #10b981;
  font-weight: 600;
  font-size: 0.82rem;
}

/* ==========================================================================
   文章与评测矩阵 (Articles Section - 内部跳转)
   ========================================================================== */
.articles-section {
  padding: 85px 0;
}

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

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  transition: all var(--transition-smooth);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.article-category {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary-cyan);
  text-transform: uppercase;
  margin-bottom: 10px;
}

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

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

.article-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 14px;
  margin-top: auto;
}

.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--primary-emerald);
  font-weight: 600;
  font-size: 0.86rem;
}

.article-read-more:hover {
  color: #34d399;
}

/* ==========================================================================
   用户真实评价 (Testimonials Section)
   ========================================================================== */
.testimonials-section {
  padding: 75px 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px;
  backdrop-filter: blur(12px);
  position: relative;
  transition: all var(--transition-smooth);
}

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

.stars {
  color: var(--accent-gold);
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.testimonial-text {
  font-size: 0.92rem;
  color: #e2e8f0;
  line-height: 1.65;
  margin-bottom: 20px;
  font-style: italic;
}

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

.user-avatar-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #ffffff;
  font-size: 1rem;
}

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

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

/* ==========================================================================
   常见问题与解答 (FAQ Section)
   ========================================================================== */
.faq-section {
  padding: 75px 0;
}

.faq-accordion-group {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-item:hover {
  border-color: rgba(16, 185, 129, 0.35);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-arrow {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
  color: var(--primary-emerald);
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease-out;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 24px 20px;
}

/* ==========================================================================
   权威外链生态区 (External Resources Section)
   ========================================================================== */
.external-links-section {
  padding: 50px 0;
  border-top: 1px solid var(--border-subtle);
}

.external-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.ext-link-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
}

.ext-link-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(6, 182, 212, 0.4);
  transform: translateY(-2px);
}

.ext-link-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(6, 182, 212, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-cyan);
  flex-shrink: 0;
}

.ext-link-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: #ffffff;
}

.ext-link-desc {
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ==========================================================================
   底部行动号召横幅 (Bottom CTA Banner)
   ========================================================================== */
.bottom-cta-section {
  padding: 65px 0 85px;
}

.bottom-cta-banner {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(6, 182, 212, 0.1) 100%);
  border: 1px solid rgba(16, 185, 129, 0.4);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  text-align: center;
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 40px -10px rgba(16, 185, 129, 0.2);
}

.bottom-cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 14px;
}

.bottom-cta-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 30px;
}

/* ==========================================================================
   页脚 (Site Footer)
   ========================================================================== */
.site-footer {
  background: #04060d;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 35px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 36px;
  margin-bottom: 45px;
}

.footer-col-title {
  font-size: 0.96rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
}

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

.footer-nav-list a:hover {
  color: var(--primary-emerald);
}

.keyword-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.keyword-tag {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  font-size: 0.74rem;
  color: var(--text-secondary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 15px;
  font-size: 0.8rem;
}

/* ==========================================================================
   响应式断点控制
   ========================================================================== */
@media (max-width: 1200px) {
  .features-grid, .articles-grid, .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .external-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .telemetry-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .telemetry-item:nth-child(2) {
    border-right: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .nav-links {
    display: none;
  }
  .nav-menu-btn {
    display: block;
  }
}

@media (max-width: 640px) {
  .features-grid, .articles-grid, .testimonials-grid, .external-links-grid {
    grid-template-columns: 1fr;
  }
  .telemetry-bar {
    grid-template-columns: 1fr;
  }
  .telemetry-item {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 12px;
  }
  .telemetry-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}