/* ==========================================================================
   猫熊网络 (maoxiongwangluojc.homes) 赛博霓虹风设计系统
   字体要求：正楷体
   背景要求：radial-gradient(at 20% 20%, #6ee7b7 0, transparent 50%), radial-gradient(at 80% 80%, #34d399 0, transparent 50%), #ecfdf5;
   ========================================================================== */

:root {
  /* 专属字体定义 */
  --font-family: "Kaiti", "STKaiti", "KaiTi_GB2312", "FZKai-Z03S", "DFKai-SB", "Noto Serif SC", serif;
  
  /* 基础背景色与赛博霓虹调色盘 */
  --bg-main: #ecfdf5;
  --bg-mesh: radial-gradient(at 20% 20%, #6ee7b7 0, transparent 50%), 
              radial-gradient(at 80% 80%, #34d399 0, transparent 50%), 
              #ecfdf5;
              
  --cyber-dark-bg: rgba(10, 31, 23, 0.92);
  --cyber-dark-card: rgba(13, 40, 30, 0.82);
  --cyber-light-card: rgba(255, 255, 255, 0.85);
  
  --neon-green: #00ff87;
  --neon-cyan: #00f0ff;
  --neon-pink: #ff007f;
  --neon-purple: #9d4edd;
  --neon-amber: #ffb703;
  --neon-mint: #10b981;
  
  --text-main: #062c21;
  --text-muted: #3b7a66;
  --text-light: #f0fdf4;
  --text-light-muted: #a7f3d0;
  
  --border-light: rgba(16, 185, 129, 0.3);
  --border-glow: rgba(0, 240, 255, 0.6);
  --border-pink: rgba(255, 0, 127, 0.5);
  
  --shadow-neon-cyan: 0 0 15px rgba(0, 240, 255, 0.4);
  --shadow-neon-green: 0 0 15px rgba(0, 255, 135, 0.4);
  --shadow-neon-pink: 0 0 15px rgba(255, 0, 127, 0.4);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-mesh);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* 赛博空间背景科技网格背景 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: 
    linear-gradient(rgba(16, 185, 129, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

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

/* 通用容器 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 赛博玻璃卡片基础类 */
.glass-card {
  background: var(--cyber-light-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(6, 44, 33, 0.08);
  transition: var(--transition);
}

.glass-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-neon-green);
  transform: translateY(-3px);
}

.dark-glass-card {
  background: var(--cyber-dark-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 255, 135, 0.25);
  border-radius: var(--radius-md);
  color: var(--text-light);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.35);
  transition: var(--transition);
}

.dark-glass-card:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
  transform: translateY(-3px);
}

/* ==========================================================================
   动态 LOGO & 霓虹点缀组件
   ========================================================================== */
.logo-container {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-avatar-wrapper {
  position: relative;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 动态霓虹旋转外光环 */
.logo-avatar-wrapper::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--neon-cyan), var(--neon-green), var(--neon-pink), var(--neon-cyan));
  animation: spin-glow 4s linear infinite;
  z-index: 1;
  filter: drop-shadow(0 0 6px var(--neon-green));
}

.logo-avatar-wrapper::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  background: #ecfdf5;
  z-index: 2;
}

.logo-avatar-img {
  position: relative;
  z-index: 3;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  animation: pulse-avatar 3s ease-in-out infinite;
}

/* HUD 闪烁边角 */
.logo-hud-tag {
  position: absolute;
  bottom: -4px;
  right: -6px;
  background: var(--neon-pink);
  color: #fff;
  font-size: 10px;
  font-weight: bold;
  padding: 1px 5px;
  border-radius: 4px;
  z-index: 4;
  letter-spacing: 0.5px;
  box-shadow: 0 0 8px var(--neon-pink);
  animation: hud-blink 2s ease-in-out infinite;
}

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

.logo-title {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 1px;
  background: linear-gradient(135deg, #064e3b 0%, #059669 50%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 6px;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* 动效 Keyframes */
@keyframes spin-glow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes pulse-avatar {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes hud-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ==========================================================================
   Header 导航栏
   ========================================================================== */
.header-nav {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(236, 253, 245, 0.88);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-bottom: 1px solid rgba(16, 185, 129, 0.25);
  transition: var(--transition);
}

.header-nav.scrolled {
  background: rgba(10, 31, 23, 0.95);
  border-bottom: 1px solid var(--neon-green);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-nav.scrolled .logo-title {
  background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-nav.scrolled .nav-link {
  color: var(--text-light-muted);
}

.header-nav.scrolled .nav-link:hover {
  color: var(--neon-green);
}

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

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

.nav-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-green), var(--neon-cyan));
  transition: var(--transition);
  border-radius: 2px;
}

.nav-link:hover {
  color: #059669;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-family: var(--font-family);
  font-size: 1.05rem;
  font-weight: bold;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #059669 0%, #10b981 50%, #0284c7 100%);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
  transform: rotate(45deg);
  transition: 0.8s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 240, 255, 0.5);
}

.btn-cyber {
  background: rgba(10, 31, 23, 0.9);
  color: var(--neon-green);
  border: 1px solid var(--neon-green);
  box-shadow: var(--shadow-neon-green);
}

.btn-cyber:hover {
  background: var(--neon-green);
  color: #062c21;
  box-shadow: 0 0 25px var(--neon-green);
  transform: translateY(-2px);
}

.btn-glow-pink {
  background: linear-gradient(135deg, #ff007f 0%, #ec4899 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(255, 0, 127, 0.45);
}

.btn-glow-pink:hover {
  box-shadow: 0 6px 25px rgba(255, 0, 127, 0.65);
  transform: translateY(-2px);
}

/* ==========================================================================
   Hero Section 核心banner区
   ========================================================================== */
.hero-section {
  padding: 80px 0 60px 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--neon-mint);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  color: #047857;
  margin-bottom: 24px;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.2);
}

.hero-badge-tag .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-green);
  animation: blink-dot 1.5s infinite;
}

@keyframes blink-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 20px;
  color: var(--text-main);
}

.hero-title span.neon-highlight {
  background: linear-gradient(135deg, #047857 0%, #00f0ff 50%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 34px;
  max-width: 620px;
}

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

.hero-stats-row {
  display: flex;
  align-items: center;
  gap: 30px;
  padding-top: 24px;
  border-top: 1px dashed rgba(16, 185, 129, 0.3);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: #047857;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Hero 右侧赛博视觉核心交互阵列卡片 */
.hero-visual-card {
  position: relative;
}

.cyber-status-box {
  padding: 30px;
  position: relative;
}

.cyber-status-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(0, 255, 135, 0.2);
}

.status-title {
  font-size: 1.15rem;
  font-weight: bold;
  color: var(--neon-green);
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.ping-matrix {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ping-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.05);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.ping-location {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: bold;
}

.flag-icon {
  font-size: 1.2rem;
}

.ping-value {
  color: var(--neon-green);
  font-family: monospace;
  font-weight: bold;
}

.ping-type {
  font-size: 0.8rem;
  background: rgba(16, 185, 129, 0.2);
  color: var(--text-light-muted);
  padding: 2px 8px;
  border-radius: 4px;
}

/* ==========================================================================
   核心卖点网格 Section
   ========================================================================== */
.section-padding {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: bold;
  color: #059669;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
}

.feature-icon-wrapper {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(2, 132, 199, 0.2) 100%);
  border: 1px solid var(--neon-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 22px;
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.25);
}

.feature-title {
  font-size: 1.4rem;
  font-weight: bold;
  margin-bottom: 12px;
  color: var(--text-main);
}

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

/* ==========================================================================
   节点列表 Matrix Section
   ========================================================================== */
.nodes-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 800px;
}

.nodes-table th, .nodes-table td {
  padding: 16px 24px;
}

.nodes-table th {
  background: rgba(8, 25, 19, 0.95);
  color: var(--neon-green);
  font-size: 1.05rem;
  font-weight: bold;
  border-bottom: 2px solid var(--neon-green);
}

.nodes-table td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nodes-table tr:hover td {
  background: rgba(0, 255, 135, 0.06);
}

.node-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: bold;
}

.node-iplc {
  background: rgba(0, 240, 255, 0.15);
  color: var(--neon-cyan);
  border: 1px solid rgba(0, 240, 255, 0.4);
}

.node-bgp {
  background: rgba(16, 185, 129, 0.15);
  color: var(--neon-green);
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.status-online {
  color: var(--neon-green);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: bold;
}

.status-online::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-green);
}

/* ==========================================================================
   套餐购买 Section (匹配图2价格: ¥11, ¥16, ¥13)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  align-items: stretch;
}

.pricing-card {
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.pricing-card.featured {
  border: 2px solid var(--neon-green);
  box-shadow: 0 0 25px rgba(0, 255, 135, 0.35);
  transform: translateY(-8px);
}

.pricing-ribbon {
  position: absolute;
  top: 18px;
  right: 18px;
  background: linear-gradient(135deg, #ff007f 0%, #9d4edd 100%);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: bold;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px rgba(255, 0, 127, 0.5);
}

.pricing-header {
  margin-bottom: 24px;
  text-align: center;
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 12px;
}

.pricing-price-box {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin-bottom: 12px;
}

.pricing-currency {
  font-size: 1.6rem;
  font-weight: bold;
}

.pricing-price {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
}

.pricing-period {
  font-size: 1rem;
  color: var(--text-muted);
}

.pricing-card.dark-glass-card .pricing-period {
  color: var(--text-light-muted);
}

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

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 1.05rem;
}

.feature-icon-check {
  color: var(--neon-green);
  font-weight: bold;
  flex-shrink: 0;
}

.feature-item.disabled {
  opacity: 0.5;
  text-decoration: line-through;
}

/* ==========================================================================
   客户端使用教程 Section
   ========================================================================== */
.tutorials-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.tab-btn {
  padding: 12px 26px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border-light);
  font-family: var(--font-family);
  font-size: 1.05rem;
  font-weight: bold;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
  background: var(--cyber-dark-bg);
  color: var(--neon-green);
  border-color: var(--neon-green);
  box-shadow: var(--shadow-neon-green);
}

.tab-content-panel {
  display: none;
}

.tab-content-panel.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-card {
  padding: 24px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #059669, #0284c7);
  color: #fff;
  font-size: 1.3rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(5, 150, 105, 0.4);
}

.step-info h4 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.step-info p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ==========================================================================
   常见问题 FAQ Section (手风琴)
   ========================================================================== */
.faq-accordion {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  font-family: var(--font-family);
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.4rem;
  transition: transform 0.3s ease;
  color: #059669;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 28px;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 28px 24px 28px;
  border-top: 1px dashed rgba(16, 185, 129, 0.2);
}

/* ==========================================================================
   用户评价 Section
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  padding: 28px;
}

.review-user-info {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.user-avatar-placeholder {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #10b981, #00f0ff);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: bold;
  font-size: 1.2rem;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.user-name {
  font-size: 1.1rem;
  font-weight: bold;
}

.user-role {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.star-rating {
  color: var(--neon-amber);
  margin-bottom: 12px;
  font-size: 1.1rem;
}

.review-text {
  font-size: 1.05rem;
  color: var(--text-main);
  line-height: 1.7;
}

/* ==========================================================================
   SEO 文章中心卡片 Section
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.article-card {
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.article-tag {
  background: rgba(16, 185, 129, 0.15);
  color: #047857;
  padding: 2px 10px;
  border-radius: 4px;
  font-weight: bold;
}

.article-title {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 12px;
  line-height: 1.4;
  color: var(--text-main);
  transition: var(--transition);
}

.article-card:hover .article-title {
  color: #059669;
}

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

.article-link {
  font-weight: bold;
  color: #059669;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-link:hover {
  color: #0284c7;
}

/* ==========================================================================
   60+ 关键词标签云 Section
   ========================================================================== */
.tags-cloud-box {
  padding: 40px;
}

.tags-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.tag-pill {
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  color: var(--text-main);
  transition: var(--transition);
}

.tag-pill:hover {
  background: var(--cyber-dark-bg);
  color: var(--neon-green);
  border-color: var(--neon-green);
  box-shadow: 0 0 12px rgba(0, 255, 135, 0.4);
  transform: scale(1.05);
}

/* ==========================================================================
   Footer 页脚
   ========================================================================== */
.footer-section {
  background: var(--cyber-dark-bg);
  color: var(--text-light);
  padding: 70px 0 30px 0;
  border-top: 2px solid var(--neon-green);
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 50px;
}

.footer-about p {
  color: var(--text-light-muted);
  margin-top: 16px;
  max-width: 360px;
}

.footer-title {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--neon-green);
  margin-bottom: 20px;
  position: relative;
}

.footer-title::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--neon-cyan);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-light-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--neon-green);
  padding-left: 4px;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-light-muted);
  font-size: 0.95rem;
}

/* 浮动固定 CTA 按钮 */
.floating-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  animation: float-pulse 3s infinite;
}

@keyframes float-pulse {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* 响应式调整 */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .hero-title {
    font-size: 2rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .floating-cta {
    bottom: 16px;
    right: 16px;
    left: 16px;
    text-align: center;
  }
  .floating-cta .btn {
    display: block;
    width: 100%;
  }
}