/* ===================================================================
   酷酷云机场官网 - 现代化渐变与毛玻璃暗黑视觉设计系统 (Gradient Glassmorphism)
   Style Sheet based on UI Specifications
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* 调色盘：深邃紫黑背景与赛博渐变 */
  --bg-dark: #080612;
  --bg-deep: #0e0a1f;
  --bg-card: rgba(22, 16, 42, 0.65);
  --bg-card-hover: rgba(32, 24, 60, 0.75);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-strong: rgba(255, 255, 255, 0.08);

  /* 核心渐变紫粉红（与图1完全一致） */
  --gradient-primary: linear-gradient(135deg, #9d4edd 0%, #c77dff 50%, #f72585 100%);
  --gradient-btn: linear-gradient(135deg, #a855f7 0%, #d946ef 50%, #ec4899 100%);
  --gradient-btn-hover: linear-gradient(135deg, #9333ea 0%, #c026d3 50%, #db2777 100%);
  --gradient-glow: radial-gradient(circle, rgba(168, 85, 247, 0.35) 0%, rgba(236, 72, 153, 0.15) 50%, transparent 70%);
  --gradient-subtle: linear-gradient(180deg, rgba(168, 85, 247, 0.12) 0%, rgba(14, 10, 31, 0) 100%);
  --gradient-text: linear-gradient(135deg, #ffffff 20%, #e0aaff 60%, #ff70a6 100%);

  /* 边框与阴影 */
  --border-glass: rgba(255, 255, 255, 0.09);
  --border-glass-bright: rgba(192, 132, 252, 0.35);
  --border-active: rgba(236, 72, 153, 0.5);
  --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.6), 0 0 30px rgba(168, 85, 247, 0.08);
  --shadow-glow: 0 0 25px rgba(168, 85, 247, 0.45);
  --shadow-pink-glow: 0 0 25px rgba(236, 72, 153, 0.45);

  /* 文字颜色 */
  --text-main: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --accent-purple: #c084fc;
  --accent-pink: #f472b6;
  --accent-cyan: #38bdf8;
  --accent-green: #34d399;

  /* 尺寸与圆角 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --radius-full: 9999px;

  /* 动画过渡 */
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.65;
  background: var(--bg-dark);
  color: var(--text-main);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 动态背景 Canvas 与光晕层 */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
}

.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.glow-1 {
  top: -10%;
  left: 15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(147, 51, 234, 0.38) 0%, transparent 70%);
}

.glow-2 {
  top: 40%;
  right: -5%;
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.28) 0%, transparent 70%);
  animation-duration: 22s;
}

.glow-3 {
  bottom: 5%;
  left: 5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.2) 0%, transparent 70%);
  animation-duration: 15s;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 30px) scale(1.1); }
  100% { transform: translate(-30px, -20px) scale(0.95); }
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.container-narrow {
  max-width: 900px;
}

/* 导航栏 */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(8, 6, 18, 0.75);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(8, 6, 18, 0.92);
  border-bottom-color: rgba(168, 85, 247, 0.2);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.35rem;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 2px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  pointer-events: none;
}

.logo-text span {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(168, 85, 247, 0.25);
  color: var(--accent-purple);
  border: 1px solid rgba(168, 85, 247, 0.4);
  margin-left: 6px;
  vertical-align: middle;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

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

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

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

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

/* 按钮通用系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(168, 85, 247, 0.35);
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 6px 24px rgba(236, 72, 153, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(192, 132, 252, 0.4);
  transform: translateY(-2px);
}

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

.btn-sm {
  padding: 7px 14px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.btn-action {
  /* 图1专有的 Action 按钮设计 */
  background: linear-gradient(135deg, #a855f7 0%, #d946ef 100%);
  color: #ffffff;
  font-weight: 700;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 15px rgba(168, 85, 247, 0.45);
}

.btn-action:hover {
  filter: brightness(1.1);
  transform: scale(1.02);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding: 90px 0 60px;
  position: relative;
}

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

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(192, 132, 252, 0.3);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-purple);
  margin-bottom: 24px;
}

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

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
}

.hero-title-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 34px;
  max-width: 580px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border-glass);
}

.stat-item h4 {
  font-size: 1.75rem;
  font-weight: 800;
  color: #ffffff;
  font-family: 'JetBrains Mono', monospace;
}

.stat-item h4 span {
  color: var(--accent-pink);
}

.stat-item p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* 图1风格的拟物毛玻璃卡片 */
.glass-card-preview {
  background: rgba(22, 16, 42, 0.7);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  position: relative;
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.7), 0 0 40px rgba(168, 85, 247, 0.15);
  overflow: hidden;
}

.glass-card-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(192, 132, 252, 0.7), transparent);
}

.card-top-badges {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-bottom: 24px;
}

.round-icon-badge {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
}

.round-icon-badge:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  transform: scale(1.08);
}

.glass-card-main-icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(168, 85, 247, 0.5);
  margin-bottom: 24px;
  position: relative;
}

.glass-card-main-icon-inner {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.glass-card-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.glass-card-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.ping-display-box {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 24px;
}

.ping-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
}

.ping-row:last-child {
  border-bottom: none;
}

.ping-val {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: var(--accent-green);
}

/* 核心特性 / 卖点区块 */
.section {
  padding: 85px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-pink);
  margin-bottom: 12px;
  padding: 4px 14px;
  background: rgba(236, 72, 153, 0.1);
  border-radius: var(--radius-full);
  border: 1px solid rgba(236, 72, 153, 0.25);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

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

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

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-glass-bright);
  box-shadow: var(--shadow-card);
}

.feature-icon-box {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-purple);
  margin-bottom: 22px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon-box {
  background: var(--gradient-btn);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}

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

.feature-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===================================================================
   套餐价格 (Pricing) - 完全精准对应 图2 UI 设计
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: #0f0a21;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 26px;
  padding: 42px 34px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  border-color: rgba(168, 85, 247, 0.4);
  transform: translateY(-6px);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

/* 图2：最受欢迎卡片 高亮外框与顶部Badge */
.pricing-card.popular {
  background: #110c26;
  border: 2px solid #a855f7;
  box-shadow: 0 0 35px rgba(168, 85, 247, 0.28), 0 20px 45px rgba(0, 0, 0, 0.8);
  transform: scale(1.02);
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-6px);
}

.popular-badge {
  position: absolute;
  top: 24px;
  right: 28px;
  background: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 10px rgba(236, 72, 153, 0.5);
  letter-spacing: 0.02em;
}

.pricing-head {
  margin-bottom: 24px;
}

.pricing-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.pricing-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  min-height: 42px;
}

.pricing-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 28px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.currency-sym {
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
}

.price-num {
  font-size: 3.2rem;
  font-weight: 800;
  color: #ffffff;
  font-family: 'JetBrains Mono', sans-serif;
  line-height: 1;
}

.price-period {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 2px;
}

.pricing-features-list {
  list-style: none;
  margin-bottom: 34px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pricing-features-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.94rem;
  color: var(--text-secondary);
}

.pricing-check-icon {
  width: 18px;
  height: 18px;
  color: #c084fc;
  flex-shrink: 0;
}

.pricing-btn-wrap {
  margin-top: auto;
}

.btn-pricing-default {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #ffffff;
  padding: 13px 20px;
  font-weight: 700;
  font-size: 0.98rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.btn-pricing-default:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(192, 132, 252, 0.5);
  color: #ffffff;
}

.btn-pricing-highlight {
  width: 100%;
  background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
  border: none;
  color: #ffffff;
  padding: 13px 20px;
  font-weight: 700;
  font-size: 0.98rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.4);
  transition: var(--transition);
}

.btn-pricing-highlight:hover {
  background: linear-gradient(135deg, #6d28d9 0%, #9333ea 100%);
  box-shadow: 0 6px 25px rgba(168, 85, 247, 0.6);
  transform: translateY(-2px);
  color: #ffffff;
}

/* 客户端下载区域 (Clients) */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.client-card:hover {
  border-color: rgba(192, 132, 252, 0.4);
  transform: translateY(-5px);
  background: var(--bg-card-hover);
}

.client-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.client-card:hover .client-icon {
  background: var(--gradient-btn);
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}

.client-os {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.client-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.client-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 20px;
}

.client-tag {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent-purple);
}

/* AI 工具加速导航 */
.ai-tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.ai-tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  transition: var(--transition);
  text-decoration: none;
}

.ai-tool-card:hover {
  border-color: rgba(236, 72, 153, 0.4);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.ai-tool-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.ai-tool-info h4 {
  font-size: 1.08rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.ai-tool-info p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 8px;
}

.ai-badge-latency {
  display: inline-block;
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(52, 211, 153, 0.15);
  color: var(--accent-green);
  font-family: 'JetBrains Mono', monospace;
}

/* 知识库与9篇文章精选展示 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  text-decoration: none;
}

.article-card:hover {
  border-color: rgba(168, 85, 247, 0.45);
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.5);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 14px;
}

.article-category {
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(168, 85, 247, 0.2);
  color: var(--accent-purple);
  font-weight: 600;
}

.article-card-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.5;
  margin-bottom: 12px;
  transition: var(--transition);
}

.article-card:hover .article-card-title {
  color: var(--accent-purple);
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--accent-pink);
  font-weight: 600;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* FAQ 常见问题折叠面板 */
.faq-wrap {
  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: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: rgba(168, 85, 247, 0.4);
  background: rgba(26, 18, 50, 0.85);
}

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

.faq-icon {
  width: 22px;
  height: 22px;
  transition: var(--transition);
  color: var(--accent-purple);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  padding-bottom: 22px;
}

.faq-answer-inner {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 14px;
}

/* 优惠码横幅 / 兑换码互动展示 */
.coupon-banner {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.2) 0%, rgba(236, 72, 153, 0.2) 100%);
  border: 1px solid rgba(236, 72, 153, 0.35);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 60px 0;
  position: relative;
  overflow: hidden;
}

.coupon-info h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.coupon-info p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.coupon-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0, 0, 0, 0.4);
  padding: 8px 14px 8px 20px;
  border-radius: var(--radius-md);
  border: 1px dashed rgba(236, 72, 153, 0.5);
}

.coupon-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #f472b6;
}

/* 文章详情页样式系统 */
.article-container {
  max-width: 860px;
  margin: 40px auto 90px;
  padding: 0 24px;
}

.article-header {
  margin-bottom: 40px;
  text-align: left;
}

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

.article-breadcrumb a {
  color: var(--accent-purple);
  text-decoration: none;
}

.article-page-title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.article-page-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-glass);
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #e2e8f0;
}

.article-content h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: #ffffff;
  margin: 42px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-content h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-purple);
  margin: 30px 0 14px;
}

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

.article-content ul, .article-content ol {
  margin: 0 0 24px 24px;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 8px;
}

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

.article-callout {
  background: rgba(168, 85, 247, 0.1);
  border-left: 4px solid #a855f7;
  padding: 18px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 28px 0;
  font-size: 0.98rem;
  color: #e2e8f0;
}

.article-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.article-table th {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  font-weight: 700;
  padding: 14px 18px;
  border: 1px solid var(--border-glass);
}

.article-table td {
  padding: 14px 18px;
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
}

.article-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

/* 内部文章互相推荐与跳转 */
.related-articles-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin: 50px 0;
}

.related-articles-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
}

.related-articles-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  list-style: none;
}

.related-articles-list a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.94rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  display: block;
  transition: var(--transition);
  border: 1px solid transparent;
}

.related-articles-list a:hover {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.3);
  color: #ffffff;
}

/* 底部浮动 CTA 栏（转化加速） */
.floating-cta {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  z-index: 99;
  background: rgba(16, 11, 34, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(192, 132, 252, 0.4);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 25px rgba(168, 85, 247, 0.35);
  border-radius: var(--radius-full);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-cta.visible {
  transform: translateX(-50%) translateY(0);
}

.floating-cta-text {
  font-size: 0.92rem;
  font-weight: 600;
  color: #ffffff;
}

.floating-cta-text span {
  color: var(--accent-pink);
}

/* 页脚 */
.footer {
  background: #06040d;
  border-top: 1px solid var(--border-glass);
  padding: 70px 0 35px;
  position: relative;
  z-index: 1;
}

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

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 18px 0;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--accent-purple);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 14px;
}

/* Toast 提示通知 */
.toast-notice {
  position: fixed;
  top: 24px;
  right: 24px;
  background: #1e1338;
  border: 1px solid var(--accent-purple);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  color: #ffffff;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 9999;
  transform: translateY(-50px);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* 移动端与响应式适配 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .pricing-card.popular {
    transform: none;
  }
  .pricing-card.popular:hover {
    transform: translateY(-6px);
  }
  .features-grid, .articles-grid, .ai-tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.3rem;
  }
  .features-grid, .articles-grid, .ai-tools-grid, .clients-grid {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .nav-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .coupon-banner {
    flex-direction: column;
    gap: 20px;
    text-align: center;
    padding: 28px 20px;
  }
  .related-articles-list {
    grid-template-columns: 1fr;
  }
  .article-page-title {
    font-size: 1.85rem;
  }
  .floating-cta {
    width: 90%;
    justify-content: space-between;
  }
}