/* 赔钱机场官网 - 趣味轻量级浅色系现代样式 */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;600;700;800&display=swap');

:root {
  --font-main: 'Plus Jakarta Sans', 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* 调色盘：清爽浅色系 + 活力生机薄荷绿 + 趣味橙黄 + 科技靛蓝 */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-glass: rgba(255, 255, 255, 0.75);
  --border-light: #e2e8f0;
  --border-hover: #cbd5e1;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-dim: #94a3b8;

  --primary: #10b981;
  --primary-hover: #059669;
  --primary-light: #ecfdf5;
  --primary-glow: rgba(16, 185, 129, 0.25);

  --accent-amber: #f59e0b;
  --accent-amber-light: #fef3c7;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-rose: #f43f5e;
  --accent-rose-light: #ffe4e6;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.08), 0 4px 10px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 35px -5px rgba(16, 185, 129, 0.15), 0 10px 15px -5px rgba(15, 23, 42, 0.05);
  --shadow-float: 0 15px 35px -5px rgba(99, 102, 241, 0.12);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.25s 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;
  scroll-padding-top: 80px;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* 背景趣味点缀与网格纹理 */
.bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: -2;
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(99, 102, 241, 0.07) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, rgba(245, 158, 11, 0.06) 0%, transparent 50%),
    linear-gradient(to right, rgba(226, 232, 240, 0.35) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(226, 232, 240, 0.35) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 100% 100%, 48px 48px, 48px 48px;
}

/* 动态悬浮漂浮物 */
.floating-decorations {
  position: fixed;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.float-item {
  position: absolute;
  font-size: 1.5rem;
  opacity: 0.65;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.06));
  animation: floatAnim 16s ease-in-out infinite alternate;
}

.float-item:nth-child(1) { top: 12%; left: 8%; animation-duration: 18s; font-size: 2.2rem; }
.float-item:nth-child(2) { top: 28%; right: 7%; animation-duration: 22s; animation-delay: -3s; font-size: 1.8rem; }
.float-item:nth-child(3) { top: 60%; left: 5%; animation-duration: 20s; animation-delay: -5s; font-size: 2rem; }
.float-item:nth-child(4) { top: 75%; right: 9%; animation-duration: 25s; animation-delay: -8s; font-size: 1.7rem; }
.float-item:nth-child(5) { top: 45%; left: 45%; animation-duration: 24s; animation-delay: -10s; font-size: 2.4rem; opacity: 0.35; }

@keyframes floatAnim {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-30px) rotate(8deg) scale(1.05); }
  100% { transform: translateY(20px) rotate(-6deg); }
}

/* 容器规范 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* 顶部公告条 */
.top-banner {
  background: linear-gradient(90deg, #ecfdf5, #fef3c7, #ede9fe);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  font-size: 0.875rem;
  color: #1e293b;
  padding: 0.45rem 1rem;
  text-align: center;
  font-weight: 600;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  z-index: 50;
}
.top-banner span.badge {
  background: var(--accent-rose);
  color: #fff;
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  letter-spacing: 0.5px;
}
.top-banner a {
  color: var(--primary-hover);
  text-decoration: underline;
  margin-left: 0.35rem;
}

/* 顶部导航栏 - 毛玻璃特效 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-main);
}
.brand-icon {
  font-size: 1.8rem;
  display: inline-block;
  transform: rotate(-10deg);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.brand:hover .brand-icon {
  transform: rotate(15deg) scale(1.15);
}
.brand-tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--primary-light);
  color: var(--primary-hover);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

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

.nav-cta-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* 按钮风格 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.38);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px 0 rgba(16, 185, 129, 0.45);
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  color: #fff;
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-main);
  border-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background: #f8fafc;
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.btn-pulse {
  position: relative;
}
.btn-pulse::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  border: 2px solid var(--primary);
  opacity: 0.6;
  animation: pulsePing 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes pulsePing {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.15, 1.35); opacity: 0; }
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--text-main);
}

/* Hero 首屏区 */
.hero-section {
  padding: 5rem 0 3.5rem;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.75rem;
}
.hero-pill .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
  display: inline-block;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}
.gradient-text {
  background: linear-gradient(135deg, #059669 0%, #10b981 50%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 740px;
  margin: 0 auto 2.25rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--primary-light);
  color: var(--primary-hover);
}
.stat-info h4 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
}
.stat-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* 通用板块标题 */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}
.section-tag {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-hover);
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* 核心优势板块 */
.features-section {
  padding: 4.5rem 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.feature-box {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-box:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(16, 185, 129, 0.4);
}
.feature-badge-top {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: #f1f5f9;
  color: #475569;
}
.feature-box:hover .feature-badge-top {
  background: var(--accent-amber-light);
  color: #b45309;
}
.feature-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary-light) 0%, #e0f2fe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
}
.feature-box h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  color: var(--text-main);
}
.feature-box p {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.6;
}

/* 节点状态与延迟板块 */
.nodes-section {
  padding: 4.5rem 0;
  background: linear-gradient(180deg, transparent 0%, rgba(241, 245, 249, 0.6) 100%);
}

.node-board {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  padding: 1.75rem;
}

.node-board-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 1.5rem;
}
.node-board-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.15rem;
  font-weight: 700;
}
.live-pulse {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--primary-hover);
  font-weight: 600;
  background: var(--primary-light);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}
.live-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: blink 1.2s infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.node-table-container {
  overflow-x: auto;
}

.node-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.node-table th {
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  background: #f8fafc;
  border-bottom: 1px solid var(--border-light);
}
.node-table td {
  padding: 1rem;
  font-size: 0.925rem;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
}
.node-table tr:hover td {
  background: #f8fafc;
}
.node-flag {
  font-size: 1.35rem;
  margin-right: 0.5rem;
  vertical-align: middle;
}
.latency-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: monospace;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
}
.latency-ultra { background: #dcfce7; color: #15803d; }
.latency-fast { background: #e0f2fe; color: #0369a1; }
.latency-norm { background: #fef3c7; color: #b45309; }

.status-badge-live {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: #15803d;
  font-weight: 600;
  font-size: 0.85rem;
}

/* 套餐价格板块 */
.pricing-section {
  padding: 5rem 0;
}

.pricing-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 3rem;
}
.pricing-pill-box {
  background: #e2e8f0;
  padding: 0.3rem;
  border-radius: var(--radius-full);
  display: flex;
  gap: 0.25rem;
}
.pricing-tab-btn {
  border: none;
  background: transparent;
  padding: 0.5rem 1.4rem;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
}
.pricing-tab-btn.active {
  background: #ffffff;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}
.save-discount-tag {
  background: var(--accent-rose);
  color: #fff;
  font-size: 0.72rem;
  padding: 0.1rem 0.4rem;
  border-radius: 8px;
  margin-left: 0.3rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}
.pricing-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 15px 35px -5px rgba(16, 185, 129, 0.2);
  transform: scale(1.02);
}
.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 1rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}

.plan-humor-sub {
  font-size: 0.8rem;
  color: #e11d48;
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.plan-name {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}
.plan-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  min-height: 40px;
  margin-bottom: 1.25rem;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}
.plan-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}
.plan-price {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}
.plan-cycle {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.plan-features-list {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}
.plan-features-list li {
  font-size: 0.9rem;
  color: #334155;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.plan-features-list li svg {
  flex-shrink: 0;
  color: var(--primary);
}

/* 用户真实评价板块 */
.reviews-section {
  padding: 5rem 0;
  background: #ffffff;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.review-card {
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: #ffffff;
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.reviewer-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.avatar-emoji {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}
.reviewer-meta h4 {
  font-size: 0.95rem;
  font-weight: 700;
}
.reviewer-tag {
  font-size: 0.75rem;
  color: var(--primary-hover);
  font-weight: 600;
}
.stars {
  color: #f59e0b;
  font-size: 0.95rem;
}
.review-text {
  font-size: 0.925rem;
  color: #475569;
  line-height: 1.65;
  margin-bottom: 1rem;
  font-style: italic;
}
.review-footer {
  font-size: 0.78rem;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
}

/* 知识库板块 */
.articles-section {
  padding: 5rem 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.75rem;
}

.article-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}
.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(99, 102, 241, 0.4);
}
.article-thumb {
  height: 160px;
  background: linear-gradient(135deg, #f0fdf4 0%, #e0e7ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
}
.article-category {
  position: absolute;
  bottom: 0.75rem;
  left: 1rem;
  background: rgba(255, 255, 255, 0.9);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-hover);
}
.article-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.article-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  line-height: 1.4;
  color: var(--text-main);
  transition: color 0.2s;
}
.article-card:hover .article-content h3 {
  color: var(--accent-indigo);
}
.article-snippet {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  padding-top: 0.75rem;
  border-top: 1px solid #f1f5f9;
}

/* 常见问题 FAQ 板块 */
.faq-section {
  padding: 5rem 0;
  background: #ffffff;
}

.faq-container {
  max-width: 840px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  background: #f8fafc;
  transition: var(--transition);
}
.faq-item.active {
  background: #ffffff;
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq-icon-arrow {
  font-size: 1.2rem;
  color: var(--text-muted);
  transition: transform 0.25s ease;
}
.faq-item.active .faq-icon-arrow {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.5rem 1.25rem;
}

/* CTA 引导条 */
.cta-banner-section {
  padding: 4.5rem 0;
}
.cta-banner-box {
  background: linear-gradient(135deg, #059669 0%, #10b981 60%, #4338ca 100%);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2rem;
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}
.cta-banner-box h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
}
.cta-banner-box p {
  font-size: 1.1rem;
  opacity: 0.92;
  max-width: 650px;
  margin: 0 auto 2rem;
}

/* 页脚 */
.footer {
  background: #f1f5f9;
  border-top: 1px solid var(--border-light);
  padding: 4rem 0 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-col h4 {
  color: var(--text-main);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 0.65rem;
}
.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--primary-hover);
}
.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.825rem;
  color: var(--text-dim);
}

/* 浮动右下角客服/直达悬浮球 */
.floating-widget {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--text-main);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}
.float-btn:hover {
  transform: scale(1.1);
  border-color: var(--primary);
}
.float-btn.float-cta {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  font-size: 1.5rem;
}

/* 知识库详情页样式 */
.article-page-body {
  background: #f8fafc;
}
.article-wrapper {
  max-width: 900px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}
.article-header {
  margin-bottom: 2.5rem;
}
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}
.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
}
.breadcrumbs a:hover {
  color: var(--primary-hover);
}
.article-main-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 1rem;
}
.article-header-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.article-content-body {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  color: #334155;
  font-size: 1.05rem;
  line-height: 1.85;
}
.article-content-body h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #f1f5f9;
}
.article-content-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 1.75rem 0 0.75rem;
}
.article-content-body p {
  margin-bottom: 1.25rem;
}
.article-content-body ul, .article-content-body ol {
  margin: 0 0 1.5rem 1.5rem;
}
.article-content-body li {
  margin-bottom: 0.5rem;
}
.article-content-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
  color: #065f46;
  font-weight: 500;
}
.article-content-body code {
  background: #f1f5f9;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: Consolas, Monaco, 'Courier New', monospace;
  color: #0f172a;
}
.article-content-body pre {
  background: #0f172a;
  color: #f8fafc;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.5rem 0;
}
.article-content-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}
.article-content-body table th, .article-content-body table td {
  border: 1px solid var(--border-light);
  padding: 0.75rem 1rem;
  text-align: left;
}
.article-content-body table th {
  background: #f8fafc;
  font-weight: 700;
}

.article-cta-box {
  background: linear-gradient(135deg, #ecfdf5 0%, #e0e7ff 100%);
  border: 1px solid #a7f3d0;
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin: 2.5rem 0;
  text-align: center;
}
.article-cta-box h3 {
  color: #065f46;
  font-size: 1.35rem;
  margin-top: 0;
}
.article-cta-box p {
  color: #047857;
  font-size: 0.95rem;
}

/* 响应式断点 */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
  }
  .nav-links.show {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .pricing-card.featured {
    transform: none;
  }
  .article-content-body {
    padding: 1.5rem;
  }
}