/* ===================================================================
   扬帆云 (YangFanYun.best) - 官方落地页与知识库现代化样式表
   设计风格：Midnight Cyberpunk / Glassmorphism / Modern Tech SaaS
   特性：响应式布局、全价格同排对齐、高对比度阅读、平滑过渡动画
   =================================================================== */

:root {
  --bg-primary: #0a0c16;
  --bg-secondary: #111425;
  --bg-card: rgba(22, 27, 46, 0.72);
  --bg-card-hover: rgba(30, 38, 64, 0.88);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.45);
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #818cf8;
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.35);
  --shadow-cyan: 0 0 25px rgba(6, 182, 212, 0.3);
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 动态背景画布 - 扬帆云专属意象 */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 1;
}

/* 链接样式 */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-normal);
}

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

/* 容器 */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 徽章 Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary-light);
  border: 1px solid rgba(99, 102, 241, 0.35);
  backdrop-filter: blur(4px);
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border-color: rgba(6, 182, 212, 0.35);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.35);
}

.badge-hot {
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  color: #fff;
  border: none;
  box-shadow: 0 2px 10px rgba(239, 68, 68, 0.4);
}

/* 按钮规范 */
.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-md);
  cursor: pointer;
  border: none;
  transition: var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.6);
  background: linear-gradient(135deg, var(--primary-light) 0%, #22d3ee 100%);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 15px 34px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

/* 导航栏 Header */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 12, 22, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

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

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

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  font-weight: 800;
  box-shadow: var(--shadow-glow);
}

.brand-logo-img {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.45);
  border: 1px solid rgba(99, 102, 241, 0.4);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: block;
}

.brand-logo-img:hover {
  transform: scale(1.08) rotate(-2deg);
  box-shadow: 0 0 25px rgba(6, 182, 212, 0.7);
}

.brand-title {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 30%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-link {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-normal);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* 顶部公告条 */
.top-notice {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.2), rgba(6, 182, 212, 0.2));
  border-bottom: 1px solid rgba(99, 102, 241, 0.3);
  padding: 8px 16px;
  text-align: center;
  font-size: 0.85rem;
  color: #c7d2fe;
}

.top-notice a {
  color: #38bdf8;
  font-weight: 600;
  text-decoration: underline;
  margin-left: 6px;
}

/* 头部 Hero 区域 */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 750px;
  height: 550px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.18) 0%, rgba(6, 182, 212, 0.12) 40%, rgba(236, 72, 153, 0.05) 60%, transparent 75%);
  pointer-events: none;
  z-index: 0;
  filter: blur(50px);
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-tag {
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, #a5b4fc 0%, #38bdf8 50%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 38px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 45px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.stat-item h3 {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #fff, var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 核心优势卡片 Feature Grid */
.section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 12px;
  margin-bottom: 14px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card);
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
  background: rgba(99, 102, 241, 0.12);
  color: var(--primary-light);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 核心要求：所有价格要同排 (Pricing In The Same Row) */
.pricing-section {
  padding: 85px 0;
  background: linear-gradient(180deg, rgba(10, 12, 22, 0) 0%, rgba(17, 20, 37, 0.6) 50%, rgba(10, 12, 22, 0) 100%);
}

.billing-switch-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 45px;
}

.billing-switch {
  display: inline-flex;
  padding: 4px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
}

.switch-btn {
  padding: 8px 22px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
}

.switch-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.4);
}

/* 5个套餐全屏幕同排对齐 (5 Columns in 1 Row) */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  align-items: stretch;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 26px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  position: relative;
  transition: var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
}

.pricing-card.featured {
  border: 2px solid var(--primary);
  background: rgba(30, 35, 68, 0.85);
  box-shadow: var(--shadow-glow);
  transform: scale(1.02);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.04) translateY(-6px);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #f43f5e, #fb7185);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(244, 63, 94, 0.4);
}

.plan-header {
  text-align: center;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
}

.plan-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.plan-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
  min-height: 2.4em;
}

.plan-price-box {
  margin: 18px 0;
  text-align: center;
}

.currency {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary-light);
}

.price-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
}

.price-period {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.annual-saving {
  display: block;
  font-size: 0.75rem;
  color: var(--accent-emerald);
  margin-top: 4px;
  font-weight: 600;
}

.plan-features-list {
  list-style: none;
  margin: 18px 0;
  flex-grow: 1;
}

.plan-features-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 11px;
  line-height: 1.4;
}

.plan-features-list li svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--accent-emerald);
  margin-top: 2px;
}

.pricing-card .btn {
  width: 100%;
  font-size: 0.9rem;
  padding: 10px 14px;
}

/* 节点线路分布展示 */
.nodes-section {
  padding: 70px 0;
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.node-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
}

.flag-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.node-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.node-info p {
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

/* 测评文章精选板块 */
.articles-preview-section {
  padding: 80px 0;
}

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

.article-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card);
}

.article-header-meta {
  padding: 24px 24px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-content-body {
  padding: 0 24px 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.article-card h3 {
  font-size: 1.18rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.45;
}

.article-card h3 a:hover {
  color: var(--primary-light);
}

.article-card p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-footer-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* 用户评价板块 */
.reviews-section {
  padding: 80px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(17, 20, 37, 0.4) 50%, transparent 100%);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.avatar-circle {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary), var(--accent-pink));
}

.reviewer-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.reviewer-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.review-stars {
  color: #fbbf24;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.review-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* 常见问题 FAQ 板块 */
.faq-section {
  padding: 80px 0;
  max-width: 900px;
  margin: 0 auto;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
}

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

.faq-icon {
  font-size: 1.25rem;
  color: var(--primary-light);
  transition: transform 0.3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease-out;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 350px;
  padding: 0 24px 22px;
}

/* CTA 转换横幅 */
.cta-banner-section {
  padding: 70px 0;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.25) 0%, rgba(6, 182, 212, 0.25) 100%);
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: var(--radius-xl);
  padding: 56px 40px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(16px);
}

.cta-banner h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.cta-banner p {
  font-size: 1.1rem;
  color: #cbd5e1;
  max-width: 650px;
  margin: 0 auto 30px;
}

/* 页脚 Footer */
.site-footer {
  border-top: 1px solid var(--border-color);
  background: #07080f;
  padding: 70px 0 35px;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  margin-top: 14px;
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.friendly-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.friendly-links a {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.friendly-links a:hover {
  color: var(--primary-light);
}

/* ===================================================================
   文章页面专用排版与阅读样式
   =================================================================== */
.article-header {
  padding: 60px 0 35px;
  border-bottom: 1px solid var(--border-color);
}

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

.breadcrumbs a {
  color: var(--text-secondary);
}

.breadcrumbs a:hover {
  color: var(--primary-light);
}

.article-main-title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 20px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.article-meta-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-body-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 45px;
  padding: 50px 0 80px;
}

.article-article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-article-content h2 {
  font-size: 1.7rem;
  font-weight: 700;
  color: #ffffff;
  margin: 40px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-article-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: #f1f5f9;
  margin: 28px 0 14px;
}

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

.article-article-content ul, .article-article-content ol {
  margin-bottom: 24px;
  padding-left: 26px;
}

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

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

.article-article-content a {
  color: #38bdf8;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-article-content a:hover {
  color: #818cf8;
}

.article-article-content blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(99, 102, 241, 0.08);
  padding: 16px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 25px 0;
  color: #c7d2fe;
}

.comparison-table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
}

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

.comparison-table th, .comparison-table td {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-weight: 700;
}

.comparison-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.in-article-cta {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.15));
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 35px 0;
  text-align: center;
}

.in-article-cta h4 {
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 10px;
}

.in-article-cta p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* 文章侧边栏与目录 */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(10px);
}

.sidebar-widget h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.sidebar-widget a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: block;
  line-height: 1.45;
}

.sidebar-widget a:hover {
  color: var(--primary-light);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-item {
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.tag-item:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===================================================================
   响应式移动端适配 (Mobile Responsive)
   =================================================================== */
@media (max-width: 1200px) {
  /* 当屏幕介于 1024px 与 1200px 时，微调卡片内边距以保持单排完整呈现 */
  .pricing-grid {
    gap: 10px;
  }
  .pricing-card {
    padding: 20px 12px;
  }
  .price-number {
    font-size: 1.85rem;
  }
}

@media (max-width: 1024px) {
  .features-grid, .articles-grid, .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .node-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 2.8rem;
  }
  
  /* 允许在小平板及横屏手机上通过横向滚动保持同排对比 */
  .pricing-grid {
    display: flex;
    overflow-x: auto;
    padding-bottom: 16px;
    scroll-snap-type: x mandatory;
    gap: 16px;
  }
  .pricing-card {
    min-width: 250px;
    flex: 0 0 250px;
    scroll-snap-align: start;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-body-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(10, 12, 22, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-150%);
    transition: transform 0.3s ease-in-out;
  }
  .nav-links.active {
    transform: translateY(0);
  }
  .menu-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.15rem;
  }
  .hero-description {
    font-size: 1rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .features-grid, .articles-grid, .reviews-grid, .node-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
  .cta-banner {
    padding: 36px 20px;
  }
  .cta-banner h2 {
    font-size: 1.8rem;
  }
  .article-main-title {
    font-size: 1.85rem;
  }
}