/* ===================================================================
   拼好连 (PinHaoLian) - 2026 全新现代化极简轻奢 SaaS 模板样式表
   风格特征：Stripe / Apple 级清爽纯净科技风、极速秒开、高转化率、移动端优先
=================================================================== */

:root {
  /* 基础浅色背景与表面 */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;
  --border-glow: #3b82f6;
  
  /* 文字层级对比 */
  --text-main: #0f172a;       /* 浓郁深空蓝黑，极佳可读性 */
  --text-muted: #475569;      /* 次级正文灰 */
  --text-dim: #94a3b8;        /* 辅助说明淡灰 */
  
  /* 品牌核心色彩体系 */
  --accent-blue: #2563eb;
  --accent-cyan: #0284c7;
  --accent-purple: #7c3aed;
  --accent-emerald: #059669;
  --accent-amber: #d97706;
  
  /* 高级渐变 */
  --gradient-brand: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #7c3aed 100%);
  --gradient-title: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #2563eb 100%);
  --gradient-badge: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
  
  /* 阴影体系 */
  --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 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-hover: 0 20px 30px -4px rgba(37, 99, 235, 0.12), 0 8px 10px -6px rgba(37, 99, 235, 0.08);
  --shadow-featured: 0 20px 40px -10px rgba(37, 99, 235, 0.22);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --container-max: 1200px;
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  scroll-behavior: smooth;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* 锚点跳转平滑偏移，避免被 sticky 导航栏遮挡 */
[id] {
  scroll-margin-top: 86px;
}


body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  background: radial-gradient(circle at 50% -20%, rgba(37, 99, 235, 0.08) 0%, transparent 60%),
              radial-gradient(circle at 90% 20%, rgba(124, 58, 237, 0.05) 0%, transparent 45%),
              var(--bg-primary);
}

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

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 按钮与 CTA 规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.45);
  filter: brightness(1.05);
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-block {
  width: 100%;
}

/* 导航栏 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.02);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.brand-logo-icon {
  width: 38px;
  height: 38px;
  background: var(--gradient-brand);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.brand-name {
  color: #0f172a;
  font-weight: 800;
}

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

.nav-link {
  font-size: 0.94rem;
  color: #475569;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
}

.nav-link:hover {
  color: var(--accent-blue);
}

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

/* 主视觉区 Hero Section */
.hero-section {
  padding: 80px 0 90px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-badge);
  border: 1px solid rgba(191, 219, 254, 0.8);
  color: #1d4ed8;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: #2563eb;
  border-radius: 50%;
  box-shadow: 0 0 10px #2563eb;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.6); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(37, 99, 235, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

.hero-title {
  font-size: 3.15rem;
  line-height: 1.18;
  font-weight: 800;
  margin-bottom: 22px;
  letter-spacing: -1.2px;
  color: #0f172a;
}

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

.hero-desc {
  font-size: 1.12rem;
  line-height: 1.75;
  color: #475569;
  margin-bottom: 34px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 38px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 26px;
  border-top: 1px solid var(--border-color);
}

.metric-item .metric-val {
  font-size: 1.7rem;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.5px;
}

.metric-item .metric-label {
  font-size: 0.83rem;
  color: #64748b;
  font-weight: 500;
}

/* 主视觉右侧：深空黑晶终端监控面板（形成极其惊艳的高级视觉重心） */
.hero-visual-card {
  background: #0b1120;
  border: 1px solid #1e293b;
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25), 0 0 30px rgba(37, 99, 235, 0.15);
  position: relative;
  overflow: hidden;
  color: #f1f5f9;
}

.hero-visual-card::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -40%;
  width: 180%;
  height: 180%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 60%);
  pointer-events: none;
  animation: rotateGlow 16s linear infinite;
}

@keyframes rotateGlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid #1e293b;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-status {
  font-size: 0.8rem;
  color: #34d399;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.speed-meter-box {
  background: rgba(15, 23, 42, 0.7);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.speed-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.speed-label {
  font-size: 0.85rem;
  color: #94a3b8;
}

.speed-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: #38bdf8;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 95%;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  border-radius: 4px;
  position: relative;
}

.progress-bar-fill::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.node-list-mini {
  display: grid;
  gap: 10px;
}

.node-item-mini {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.node-name-flag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: #e2e8f0;
}

.ping-tag {
  color: #34d399;
  font-weight: 700;
  font-size: 0.8rem;
  background: rgba(16, 185, 129, 0.15);
  padding: 2px 8px;
  border-radius: 4px;
}

/* 通用 Section 结构 */
.section {
  padding: 85px 0;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-blue);
  font-weight: 700;
  margin-bottom: 12px;
  background: #eff6ff;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.28;
  margin-bottom: 14px;
  color: #0f172a;
  letter-spacing: -0.6px;
}

.section-desc {
  font-size: 1.05rem;
  color: #64748b;
  line-height: 1.65;
}

/* 核心优势板块 (3个白色卡片) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: #93c5fd;
  box-shadow: var(--shadow-hover);
}

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: #eff6ff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  margin-bottom: 24px;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 12px;
}

.feature-text {
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.7;
  flex-grow: 1;
}

/* 流媒体与 AI 支持图卡 */
.media-ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.media-ai-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.media-ai-card:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-md);
}

.media-ai-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.media-ai-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: #f5f3ff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-purple);
}

.media-ai-title {
  font-size: 1.38rem;
  font-weight: 700;
  color: #0f172a;
}

.app-pill-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.app-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: #334155;
  transition: var(--transition);
}

.app-pill:hover {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: var(--accent-blue);
  transform: translateY(-2px);
}

/* 价格对比表 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: #93c5fd;
  box-shadow: var(--shadow-hover);
}

.pricing-card.featured {
  background: #ffffff;
  border: 2px solid var(--accent-blue);
  box-shadow: var(--shadow-featured);
  transform: scale(1.03);
}

.pricing-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: #ffffff;
  font-size: 0.76rem;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.35);
}

.pricing-tier-name {
  font-size: 1.28rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: #0f172a;
}

.pricing-tier-desc {
  font-size: 0.84rem;
  color: #64748b;
  margin-bottom: 22px;
  min-height: 40px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  margin-bottom: 24px;
}

.price-currency {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-blue);
}

.price-num {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1;
  color: #0f172a;
  margin-left: 2px;
  margin-right: 4px;
  letter-spacing: -1px;
}

.price-period {
  font-size: 0.88rem;
  color: #64748b;
  font-weight: 500;
}

.pricing-features {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
  display: grid;
  gap: 13px;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.89rem;
  color: #334155;
}

.feature-check {
  color: var(--accent-emerald);
  font-weight: 800;
  flex-shrink: 0;
}

/* SEO 文章板块 (放置在价格下方) */
.articles-section {
  background: #f1f5f9;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

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

.article-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: #93c5fd;
  box-shadow: var(--shadow-hover);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 0.82rem;
}

.article-tag {
  background: #eff6ff;
  color: var(--accent-blue);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.article-date {
  color: #94a3b8;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  color: #0f172a;
  transition: var(--transition);
}

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

.article-excerpt {
  font-size: 0.9rem;
  color: #475569;
  line-height: 1.65;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-readmore {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-top: auto;
}

/* 用户评价板块 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.review-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.review-card:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-md);
}

.review-stars {
  color: var(--accent-amber);
  margin-bottom: 14px;
  font-size: 1.05rem;
}

.review-content {
  font-size: 0.94rem;
  color: #334155;
  line-height: 1.7;
  margin-bottom: 22px;
}

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

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1rem;
}

.reviewer-name {
  font-weight: 700;
  color: #0f172a;
  font-size: 0.94rem;
}

.reviewer-role {
  font-size: 0.82rem;
  color: #64748b;
}

/* FAQ 常见问题板块 */
.faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: #0f172a;
  padding: 22px 26px;
  text-align: left;
  font-size: 1.08rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: inherit;
}

.faq-answer {
  padding: 0 26px 24px;
  color: #475569;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 页脚 Footer (深空蓝灰沉稳收尾) */
.site-footer {
  background: #0f172a;
  border-top: 1px solid #1e293b;
  padding: 65px 0 35px;
  margin-top: auto;
  color: #94a3b8;
}

.footer-top-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 36px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.footer-nav-link {
  font-size: 1rem;
  font-weight: 600;
  color: #f1f5f9;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition);
}

.footer-nav-link:hover {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-2px);
}

/* 页脚 PBN 外链与友情链接要求 */
.footer-pbn-section {
  text-align: center;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 12px;
}

.footer-pbn-title {
  font-size: 0.88rem;
  color: #94a3b8;
  margin-bottom: 12px;
  font-weight: 500;
}

.pbn-links-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* 友情链接显色处理：高对比度、清晰、不加 nofollow、target="_blank" */
.pbn-link {
  color: #38bdf8 !important; /* 显著的高亮浅天蓝，显色处理 */
  font-weight: 600;
  font-size: 0.94rem;
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: var(--transition);
  padding: 4px 8px;
}

.pbn-link:hover {
  color: #7dd3fc !important;
  text-decoration-color: #38bdf8;
  text-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
}

.footer-copyright {
  text-align: center;
  font-size: 0.84rem;
  color: #64748b;
  margin-top: 22px;
}

/* 文章详情页通用样式 */
.article-page-header {
  padding: 50px 0 30px;
  border-bottom: 1px solid var(--border-color);
  background: #ffffff;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: #64748b;
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--accent-blue);
  font-weight: 500;
}
.breadcrumb a:hover {
  text-decoration: underline;
}

.article-content-body {
  max-width: 860px;
  margin: 40px auto 60px;
  padding: 0 20px;
  color: #334155;
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-content-body h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 20px;
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.article-content-body h2 {
  font-size: 1.55rem;
  font-weight: 700;
  color: #0f172a;
  margin: 38px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.article-content-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1e293b;
  margin: 28px 0 12px;
}

.article-content-body p {
  margin-bottom: 22px;
}

.article-content-body ul, .article-content-body ol {
  margin-bottom: 24px;
  padding-left: 28px;
}

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

.article-content-body a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
}

.article-content-body a:hover {
  color: #1d4ed8;
}

.article-cta-box {
  background: linear-gradient(135deg, #eff6ff 0%, #ede9fe 100%);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-lg);
  padding: 38px;
  text-align: center;
  margin: 48px 0;
  box-shadow: var(--shadow-md);
}

/* 文章页相关阅读推荐专区 */
.article-related-box {
  margin-top: 50px;
  padding-top: 36px;
  border-top: 2px dashed var(--border-color);
}

.related-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 16px;
}

.related-item-card {
  display: block;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 18px 20px;
  text-decoration: none !important;
  color: inherit !important;
  transition: var(--transition);
}

.related-item-card:hover {
  background: #ffffff;
  border-color: #93c5fd;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.related-item-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-blue);
  background: #eff6ff;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 8px;
}

.related-item-title {
  font-size: 0.96rem;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.45;
}

.related-item-card:hover .related-item-title {
  color: var(--accent-blue);
}

@media (max-width: 640px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}


/* 响应式设计 (移动端优先与平滑适配) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .media-ai-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-top-nav {
    flex-direction: column;
    gap: 12px;
  }
  
  .footer-nav-link {
    width: 100%;
    text-align: center;
  }
  
  .pbn-links-row {
    flex-direction: column;
    gap: 10px;
  }
  
  .hero-metrics {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}