/* =================================================================
   ConySS 机场网 (conyss.sbs) - 纯原生极速核心样式表
   零重型外部依赖 | 秒开性能优化 | 动态暗黑赛博美学 | 现代响应式布局
   ================================================================= */

:root {
  --bg-dark: #070913;
  --bg-surface: rgba(15, 23, 42, 0.72);
  --bg-surface-hover: rgba(30, 41, 59, 0.85);
  --bg-card: rgba(18, 26, 47, 0.8);
  --bg-card-popular: rgba(26, 35, 68, 0.9);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 242, 254, 0.35);
  --border-popular: rgba(139, 92, 246, 0.55);

  --text-main: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dark: #0f172a;

  --accent-cyan: #00f2fe;
  --accent-blue: #38bdf8;
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-pink: #d946ef;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;

  /* 专属高光冰绿 (Ice Green) 品牌配色 */
  --accent-icegreen: #00ffc4;
  --accent-icegreen-mint: #10f0ba;
  --accent-icegreen-deep: #05c48b;
  --glow-icegreen: 0 0 25px rgba(16, 240, 186, 0.45);

  --grad-primary: linear-gradient(135deg, #00ffc4 0%, #10f0ba 50%, #05c48b 100%);
  --grad-button: linear-gradient(135deg, #00ffc4 0%, #10f0ba 50%, #05c48b 100%);
  --grad-button-hover: linear-gradient(135deg, #10f0ba 0%, #00ffc4 60%, #05c48b 100%);
  --grad-text: linear-gradient(135deg, #ffffff 0%, #a7f3d0 40%, #10f0ba 100%);
  --grad-card-glow: radial-gradient(circle at 50% 0%, rgba(16, 240, 186, 0.18) 0%, rgba(0, 0, 0, 0) 70%);

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(16, 240, 186, 0.3);
  --shadow-popular: 0 0 35px rgba(16, 240, 186, 0.4);

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

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --container-max: 1240px;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.65;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
  background: radial-gradient(ellipse at 50% 0%, #151c38 0%, #070913 70%);
}

/* 动态背景 Canvas (全屏固定底层，零重力秒开) */
#dynamic-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.85;
}

/* 页面主要内容容器 (浮于 Canvas 之上) */
.content-wrapper {
  position: relative;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 导航栏 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 19, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo img {
  height: 44px;
  width: auto;
  display: block;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-cyan);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--grad-button);
  transition: width 0.25s ease;
  border-radius: 2px;
}

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

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

/* 按钮通用规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-button);
  color: #021812;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(16, 240, 186, 0.45);
}

.btn-primary:hover {
  background: var(--grad-button-hover);
  box-shadow: 0 6px 30px rgba(16, 240, 186, 0.7);
  transform: translateY(-2px);
  color: #000000;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13.5px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16.5px;
}

.btn-block {
  width: 100%;
}

/* 渐变文本 (专属冰绿高能渐变) */
.text-gradient {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Hero 首屏横幅 */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(16, 240, 186, 0.1);
  border: 1px solid rgba(16, 240, 186, 0.28);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-icegreen-mint);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 48px;
  font-weight: 850;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 22px;
}

.hero-brand-highlight {
  color: #ffffff;
  font-weight: 900;
}

.hero-subheading {
  display: inline-block;
  font-size: 1em;
  font-weight: 850;
  color: #ffffff;
  letter-spacing: -0.5px;
  margin-top: 10px;
  line-height: 1.3;
}

.nowrap-seg {
  display: inline-block;
  white-space: nowrap;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 840px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 54px;
  flex-wrap: wrap;
}

/* 信任指标计数条 */
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 960px;
  margin: 0 auto;
}

.metric-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.metric-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-highlight);
}

.metric-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.metric-label {
  font-size: 13px;
  color: var(--text-muted);
}

/* 通用区块排版 */
.section-spacing {
  padding: 85px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* 核心特性网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--grad-button);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

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

.feature-icon-box {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  color: var(--accent-cyan);
}

.feature-card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
}

.feature-card-desc {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* =================================================================
   核心价格网格 (所有价格严格横向同排)
   严格执行：桌面端 4 列严格一排对齐，价格与 CTA 垂直水平对齐
   ================================================================= */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px 28px;
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}

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

.pricing-card.popular {
  background: var(--bg-card-popular);
  border: 2px solid var(--accent-purple);
  box-shadow: var(--shadow-popular);
}

.popular-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--grad-button);
  color: #021812;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(16, 240, 186, 0.4);
  white-space: nowrap;
}

.plan-header {
  text-align: center;
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-subtle);
}

.plan-name {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 13px;
  color: var(--text-muted);
  min-height: 38px;
  line-height: 1.5;
}

/* 核心价格框：固定高度，确保所有套餐的价格完全在同一水平线上 */
.plan-price-box {
  text-align: center;
  padding: 14px 0 18px;
  min-height: 94px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.plan-price {
  font-size: 42px;
  font-weight: 900;
  color: #ffffff;
  font-family: var(--font-mono);
  line-height: 1;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.plan-currency {
  font-size: 22px;
  font-weight: 600;
  color: var(--accent-cyan);
}

.plan-cycle {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 4px;
}

.plan-subtext {
  font-size: 12.5px;
  color: var(--accent-green);
  font-weight: 600;
  margin-top: 6px;
}

/* 特性列表 */
.plan-features {
  list-style: none;
  margin: 16px 0 26px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-features li {
  font-size: 13.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.45;
}

.check-icon {
  color: var(--accent-cyan);
  font-weight: 800;
  font-size: 14px;
  flex-shrink: 0;
}

.plan-action {
  margin-top: auto;
}

/* 节点测速表格与机房展示 */
.nodes-table-wrap {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.nodes-table th, .nodes-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 14px;
}

.nodes-table th {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 1px;
}

.nodes-table tr:last-child td {
  border-bottom: none;
}

.nodes-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
}

.status-badge.online {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

/* 客户端生态支持 */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  transition: all 0.25s ease;
}

.client-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
}

.client-icon {
  font-size: 38px;
  margin-bottom: 12px;
}

.client-name {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #ffffff;
}

.client-platform {
  font-size: 13px;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.client-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 文章推荐网格 (专栏聚合 & 内部跳转) */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
}

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

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--accent-cyan);
  margin-bottom: 14px;
}

.article-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: #ffffff;
  margin-bottom: 12px;
  transition: color 0.2s ease;
}

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

.article-excerpt {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
  font-size: 12.5px;
  color: var(--text-muted);
}

.read-more {
  color: var(--accent-cyan);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 用户评价网格 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  transition: all 0.25s ease;
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
}

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

.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--grad-button);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #ffffff;
  font-size: 18px;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.reviewer-name {
  font-weight: 700;
  font-size: 16px;
  color: #ffffff;
}

.reviewer-role {
  font-size: 12.5px;
  color: var(--accent-cyan);
}

.review-stars {
  color: #f59e0b;
  font-size: 14px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-content {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* FAQ 手风琴 (使用原生纯 HTML details / summary) */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: var(--border-highlight);
  background: var(--bg-surface-hover);
}

.faq-question {
  padding: 20px 24px;
  font-size: 16.5px;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  font-size: 20px;
  color: var(--accent-cyan);
  transition: transform 0.25s ease;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 14px;
}

/* 权威外链区块 */
.external-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ext-link-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
  transition: all 0.25s ease;
}

.ext-link-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-highlight);
  background: var(--bg-surface-hover);
}

.ext-icon {
  font-size: 26px;
  flex-shrink: 0;
}

.ext-title {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 3px;
}

.ext-desc {
  font-size: 12px;
  color: var(--text-muted);
}

/* 页脚 Footer */
.site-footer {
  background: rgba(4, 6, 12, 0.95);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  margin-top: 60px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-top: 16px;
  max-width: 340px;
}

.footer-heading {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

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

.footer-nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13.5px;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* =================================================================
   文章详情页专有样式 (Article Layout)
   ================================================================= */
.article-header {
  padding: 60px 0 35px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 40px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumb-nav a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumb-nav a:hover {
  color: var(--accent-cyan);
}

.article-post-title {
  font-size: 38px;
  font-weight: 850;
  line-height: 1.35;
  color: #ffffff;
  margin-bottom: 20px;
}

.article-post-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13.5px;
  color: var(--accent-cyan);
  flex-wrap: wrap;
}

.article-body-wrapper {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}

.article-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  backdrop-filter: blur(12px);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-content h2 {
  font-size: 25px;
  font-weight: 800;
  color: #ffffff;
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 750;
  color: var(--accent-cyan);
  margin: 26px 0 12px;
}

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

.article-content ul, .article-content ol {
  margin: 0 0 22px 24px;
}

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

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

.article-content blockquote {
  border-left: 4px solid var(--accent-cyan);
  background: rgba(0, 242, 254, 0.05);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: var(--text-main);
  font-style: italic;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14.5px;
}

.article-content th, .article-content td {
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
}

.article-content th {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  font-weight: 700;
}

.article-content tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.015);
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.1) 0%, rgba(139, 92, 246, 0.15) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  margin: 36px 0;
}

.article-cta-box h3 {
  font-size: 22px;
  color: #ffffff;
  margin-bottom: 10px;
}

.article-cta-box p {
  font-size: 14.5px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.article-sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 20px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

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

.sidebar-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.45;
  transition: color 0.2s ease;
  display: block;
}

.sidebar-links a:hover {
  color: var(--accent-cyan);
}

/* =================================================================
   响应式断点适配 (秒开级纯 CSS 媒体查询)
   ================================================================= */
@media (max-width: 1100px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid, .articles-grid, .reviews-grid, .external-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 30px;
  }
  .hero-subheading {
    font-size: 1em;
    margin-top: 8px;
  }
  .nowrap-seg {
    white-space: normal;
  }
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .features-grid, .articles-grid, .reviews-grid, .external-links-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .article-body-wrapper {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
}