/* ==========================================================================
   青云梯机场官网 (qingyunt.homes) - 视觉核心与样式表
   主题色彩：深紫色 (#0D071B / #160B2C) + 樱花粉 (#FF69B4 / #FF2E93) + 科技蓝 (#00F0FF)
   设计风格：玻璃拟态 (Glassmorphism) + 霓虹发光 + 响应式布局
   ========================================================================== */

/* 1. CSS 变量与重置 */
:root {
  --bg-dark-1: #0A0518;
  --bg-dark-2: #140A28;
  --bg-card: rgba(25, 14, 46, 0.65);
  --bg-card-hover: rgba(38, 20, 69, 0.85);
  --border-glass: rgba(255, 105, 180, 0.2);
  --border-glass-glow: rgba(0, 240, 255, 0.5);
  
  --primary-pink: #FF69B4;
  --hot-pink: #FF2E93;
  --sakura-light: #FFB7C5;
  
  --tech-blue: #00F0FF;
  --deep-blue: #0072FF;
  
  --text-main: #FFFFFF;
  --text-muted: #B8A8D9;
  --text-dim: #7E6B9E;
  
  --gradient-main: linear-gradient(135deg, #FF69B4 0%, #00F0FF 100%);
  --gradient-pink-blue: linear-gradient(90deg, #FF2E93 0%, #00F0FF 100%);
  --gradient-card-header: linear-gradient(180deg, rgba(255, 105, 180, 0.15) 0%, rgba(0, 240, 255, 0.05) 100%);
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --shadow-glow-pink: 0 0 30px rgba(255, 46, 147, 0.35);
  --shadow-glow-blue: 0 0 30px rgba(0, 240, 255, 0.35);
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --container-width: 1240px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark-1);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  background: radial-gradient(circle at 50% -20%, #2E134D 0%, #0A0518 70%);
  min-height: 100vh;
}

a {
  color: var(--tech-blue);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--primary-pink);
  text-shadow: 0 0 10px rgba(255, 105, 180, 0.5);
}

/* 2. 背景 Canvas 与动态光晕 */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: -1;
  opacity: 0.4;
  animation: pulse-glow 8s infinite alternate ease-in-out;
}

.glow-orb-1 {
  top: -100px;
  left: 10%;
  width: 450px;
  height: 450px;
  background: var(--hot-pink);
}

.glow-orb-2 {
  top: 300px;
  right: 5%;
  width: 500px;
  height: 500px;
  background: var(--deep-blue);
  animation-delay: 3s;
}

.glow-orb-3 {
  top: 1800px;
  left: 15%;
  width: 600px;
  height: 600px;
  background: #6C1CD1;
  animation-delay: 5s;
}

@keyframes pulse-glow {
  0% { transform: scale(1) translateY(0); opacity: 0.3; }
  100% { transform: scale(1.2) translateY(30px); opacity: 0.6; }
}

/* 3. 通用容器与组件 */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 90px 0;
  position: relative;
}

.section-title-wrap {
  text-align: center;
  margin-bottom: 60px;
}

.badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  background: rgba(255, 105, 180, 0.12);
  border: 1px solid var(--primary-pink);
  color: var(--sakura-light);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
  box-shadow: 0 0 15px rgba(255, 105, 180, 0.2);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #FFFFFF 30%, var(--sakura-light) 70%, var(--tech-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 680px;
  margin: 0 auto;
}

/* 按钮通用 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  border: none;
  outline: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-pink-blue);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow-pink);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px rgba(0, 240, 255, 0.6);
  color: #FFFFFF;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass-glow);
  color: var(--tech-blue);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--tech-blue);
  color: #FFFFFF;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-blue);
}

/* 4. 顶部导航栏 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 18px 0;
  transition: all 0.3s ease;
}

.header.scrolled {
  background: rgba(13, 7, 27, 0.88);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 105, 180, 0.15);
  padding: 12px 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 900;
  color: #FFFFFF;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--gradient-pink-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 0 20px rgba(255, 46, 147, 0.5);
}

.logo-text span {
  color: var(--tech-blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-pink-blue);
  transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: #FFFFFF;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: #FFFFFF;
  font-size: 1.8rem;
  cursor: pointer;
}

/* 5. Hero 区域 */
.hero {
  padding-top: 160px;
  padding-bottom: 90px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.4rem;
  line-height: 1.2;
  font-weight: 900;
  margin-bottom: 24px;
}

.hero-content h1 .gradient-text {
  background: linear-gradient(135deg, #FF69B4 0%, #FF2E93 40%, #00F0FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.hero-tag-item {
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.3);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--tech-blue);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
}

.hero-card-preview {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 30px rgba(255, 105, 180, 0.15);
  position: relative;
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.server-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: #00FF87;
  font-weight: 600;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #00FF87;
  box-shadow: 0 0 10px #00FF87;
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.metric-box {
  background: rgba(10, 5, 24, 0.7);
  border: 1px solid rgba(255, 105, 180, 0.15);
  padding: 18px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform 0.3s ease;
}

.metric-box:hover {
  transform: translateY(-4px);
  border-color: var(--tech-blue);
}

.metric-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--sakura-light);
  margin-bottom: 4px;
}

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

/* 6. 核心优势区 (Features) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-pink-blue);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  background: var(--bg-card-hover);
  border-color: var(--border-glass-glow);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 25px rgba(0, 240, 255, 0.2);
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255, 105, 180, 0.2) 0%, rgba(0, 240, 255, 0.2) 100%);
  border: 1px solid var(--primary-pink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 24px;
  color: var(--tech-blue);
}

.feature-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #FFFFFF;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.96rem;
  line-height: 1.6;
}

/* 7. 机场评测板块 (Airport Review) */
.review-box {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.speed-test-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
}

.speed-test-table th,
.speed-test-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.speed-test-table th {
  color: var(--sakura-light);
  font-size: 0.95rem;
  font-weight: 700;
  background: rgba(255, 105, 180, 0.05);
}

.node-flag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.progress-bar-wrap {
  width: 100%;
  background: rgba(255, 255, 255, 0.1);
  height: 8px;
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
  margin-top: 6px;
}

.progress-bar-fill {
  height: 100%;
  background: var(--gradient-pink-blue);
  border-radius: var(--radius-full);
}

.status-badge-ok {
  background: rgba(0, 255, 135, 0.15);
  color: #00FF87;
  border: 1px solid rgba(0, 255, 135, 0.4);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
}

.unlock-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.unlock-card {
  background: rgba(10, 5, 24, 0.6);
  border: 1px solid rgba(0, 240, 255, 0.2);
  padding: 16px;
  border-radius: var(--radius-md);
  text-align: center;
}

.unlock-card-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 6px;
  color: #FFFFFF;
}

.unlock-status {
  font-size: 0.85rem;
  color: #00FF87;
  font-weight: 600;
}

/* 8. 套餐介绍板块 (Pricing Plans) */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 30px;
}

.pricing-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
  transition: all 0.4s ease;
  position: relative;
}

.pricing-card.popular {
  border-color: var(--primary-pink);
  box-shadow: 0 0 35px rgba(255, 46, 147, 0.3);
  transform: scale(1.04);
}

.popular-ribbon {
  position: absolute;
  top: -14px;
  right: 24px;
  background: var(--gradient-pink-blue);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(255, 46, 147, 0.5);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--tech-blue);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5), 0 0 25px rgba(0, 240, 255, 0.3);
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: #FFFFFF;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.plan-price {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--sakura-light);
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price span {
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 500;
}

.plan-features {
  list-style: none;
  margin-bottom: 36px;
  flex-grow: 1;
}

.plan-features li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.94rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-features li i {
  color: var(--tech-blue);
  font-style: normal;
  font-weight: bold;
}

/* 9. 客户端教程板块 (Tutorials) */
.tutorial-tabs {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 105, 180, 0.2);
  color: var(--text-muted);
  padding: 12px 26px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--gradient-pink-blue);
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: 0 0 20px rgba(255, 46, 147, 0.4);
}

.tab-content {
  display: none;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
}

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

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

.step-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.step-card {
  background: rgba(10, 5, 24, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px;
  border-radius: var(--radius-md);
  position: relative;
}

.step-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: rgba(255, 105, 180, 0.3);
  position: absolute;
  top: 16px;
  right: 20px;
}

.step-card h4 {
  font-size: 1.15rem;
  color: var(--tech-blue);
  margin-bottom: 10px;
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* 10. 节点知识板块 (Node Knowledge) */
.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.knowledge-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 30px;
  transition: transform 0.3s ease;
}

.knowledge-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-pink);
}

.knowledge-card h3 {
  font-size: 1.25rem;
  color: var(--sakura-light);
  margin-bottom: 12px;
}

.knowledge-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 11. SEO 文章板块 (SEO Articles Grid) */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.article-card:hover {
  border-color: var(--tech-blue);
  transform: translateY(-6px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.4), 0 0 20px rgba(0, 240, 255, 0.2);
}

.article-meta {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 12px;
  display: flex;
  gap: 14px;
}

.article-card h3 {
  font-size: 1.15rem;
  color: #FFFFFF;
  margin-bottom: 12px;
  line-height: 1.5;
}

.article-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-read-more {
  color: var(--primary-pink);
  font-weight: 700;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-read-more:hover {
  color: var(--tech-blue);
  gap: 10px;
}

/* 12. 用户评价与 FAQ */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.user-review-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 28px;
}

.stars {
  color: #FFD700;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.user-review-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-style: italic;
  margin-bottom: 16px;
}

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

.user-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gradient-pink-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #FFFFFF;
}

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

.user-details .role {
  font-size: 0.8rem;
  color: var(--text-dim);
}

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

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.faq-item:hover {
  border-color: var(--tech-blue);
}

.faq-question {
  padding: 22px 28px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  font-size: 1.4rem;
  color: var(--primary-pink);
  transition: transform 0.3s ease;
}

.faq-answer {
  padding: 0 28px 24px 28px;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--tech-blue);
}

/* 13. 70 SEO 关键词标签页脚 */
.tags-cloud-section {
  background: rgba(10, 5, 24, 0.9);
  padding: 60px 0;
  border-top: 1px solid rgba(255, 105, 180, 0.15);
}

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 24px;
}

.tag-link {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 105, 180, 0.15);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-muted);
  transition: all 0.25s ease;
}

.tag-link:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--tech-blue);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
}

/* 14. 页脚 Footers */
.footer {
  background: #070311;
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* 15. SEO 单页文章独立样式 */
.article-page {
  padding-top: 140px;
  padding-bottom: 90px;
}

.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.article-header {
  margin-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 24px;
}

.article-header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
  line-height: 1.35;
}

.article-body {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #E2D9F3;
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-body h2 {
  font-size: 1.6rem;
  color: var(--sakura-light);
  margin: 36px 0 18px 0;
  border-left: 4px solid var(--primary-pink);
  padding-left: 14px;
}

.article-body h3 {
  font-size: 1.3rem;
  color: var(--tech-blue);
  margin: 24px 0 14px 0;
}

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

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

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

.article-cta-box {
  background: linear-gradient(135deg, rgba(255, 46, 147, 0.2) 0%, rgba(0, 240, 255, 0.2) 100%);
  border: 1px solid var(--primary-pink);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  margin: 40px 0;
  box-shadow: 0 0 30px rgba(255, 46, 147, 0.2);
}

.article-cta-box h3 {
  color: #FFFFFF;
  margin-bottom: 12px;
  font-size: 1.4rem;
}

/* 16. 响应式适配 */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-content h1 {
    font-size: 2.6rem;
  }
  .pricing-card.popular {
    transform: none;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(13, 7, 27, 0.98);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-glass);
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .section-title {
    font-size: 2rem;
  }
  .hero-content h1 {
    font-size: 2.1rem;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .article-body {
    padding: 24px;
  }
}