/* ==========================================================================
   AgentNEO 机场网 - 极速原生样式库 (style.css)
   纯 CSS3 构建 · 零外部依赖 · 秒开级加载性能 · 赛博暗夜玻璃拟物美学
   ========================================================================== */

:root {
  --bg-primary: #070b14;
  --bg-secondary: #0d1527;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 36, 64, 0.85);
  --border-color: rgba(56, 189, 248, 0.15);
  --border-glow: rgba(0, 242, 254, 0.45);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #64748b;
  
  --neon-cyan: #00f2fe;
  --neon-blue: #38bdf8;
  --neon-green: #00ff87;
  --neon-purple: #a855f7;
  --neon-amber: #f59e0b;
  
  /* 冰红专属色系 (Ice Red / Frost Crimson) */
  --ice-red: #ff2a5f;
  --ice-red-light: #ff758f;
  --ice-red-deep: #d90429;
  --ice-red-glow: rgba(255, 42, 95, 0.45);
  
  --gradient-neon: linear-gradient(135deg, #ff758f 0%, #ff2a5f 45%, #ff0844 100%);
  --gradient-btn: linear-gradient(135deg, #ff4d79 0%, #ff1e56 50%, #d90429 100%);
  --gradient-card-top: linear-gradient(90deg, #ff4d79, #ff1e56);
  
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 25px rgba(255, 42, 95, 0.3);
  --shadow-btn: 0 4px 22px rgba(255, 30, 86, 0.45);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --container-max: 1240px;
}

/* 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", "WenQuanYi Micro Hei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #111d38 0%, #070b14 70%);
}

/* 全屏动态背景 Canvas 容器 */
#dynamic-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.85;
}

.site-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* 通用容器与排版 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

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

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

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--neon-cyan);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--neon-green);
  box-shadow: 0 0 10px var(--neon-green);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* 按钮规范与视觉 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff;
  font-weight: 700;
  box-shadow: var(--shadow-btn);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(255, 30, 86, 0.65);
  filter: brightness(1.12);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}

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

.btn-outline {
  background: transparent;
  border: 1px solid rgba(0, 242, 254, 0.4);
  color: var(--neon-cyan);
}

.btn-outline:hover {
  background: rgba(0, 242, 254, 0.1);
  border-color: var(--neon-cyan);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 6px 16px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

/* 导航栏 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(56, 189, 248, 0.12);
  transition: var(--transition);
}

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

.logo-wrapper {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  user-select: none;
  min-height: 48px;
  flex-shrink: 0;
}

.logo-wrapper img {
  height: 44px;
  width: auto;
  max-width: 260px;
  display: block;
  object-fit: contain;
  transition: var(--transition);
}

.logo-wrapper:hover img {
  filter: drop-shadow(0 0 12px rgba(0, 242, 254, 0.5));
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 2px;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-neon);
  transition: width 0.25s ease;
  border-radius: 2px;
}

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

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

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  margin: 5px 0;
  transition: var(--transition);
}

/* 移动抽屉导航 */
.mobile-nav-panel {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  background: rgba(10, 16, 30, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 24px 20px;
  flex-direction: column;
  gap: 16px;
  z-index: 99;
}

.mobile-nav-panel.open {
  display: flex;
}

.mobile-nav-link {
  padding: 10px 0;
  font-size: 1.05rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Hero 首屏 */
.hero-section {
  padding: 70px 0 60px;
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: 960px;
  margin: 0 auto;
}

.hero-badge-wrap {
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.1rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.28;
  margin-bottom: 22px;
}

.hero-title-sub {
  font-size: 0.82em;
  font-weight: 800;
  display: inline-block;
  margin-top: 6px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 740px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 820px;
  margin: 0 auto;
  padding: 22px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-sm);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  font-feature-settings: "tnum";
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 通用区块头 */
.section {
  padding: 80px 0;
  position: relative;
}

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

.section-tag {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--neon-cyan);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

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

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

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-card-top);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

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

.feature-icon-box {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--neon-cyan);
  font-size: 1.5rem;
}

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

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

/* ==========================================================================
   价格方案 (Pricing) - 核心要求：所有价格要同排 (One Row Layout)
   ========================================================================== */
.pricing-section {
  background: radial-gradient(circle at 50% 50%, rgba(14, 30, 60, 0.5) 0%, rgba(7, 11, 20, 0.2) 80%);
}

.pricing-controls {
  display: flex;
  justify-content: center;
  margin-bottom: 35px;
}

.pricing-pill {
  display: inline-flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  padding: 4px;
  border-radius: var(--radius-full);
  gap: 4px;
}

.pricing-tab {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.pricing-tab.active {
  background: var(--gradient-btn);
  color: #ffffff;
}

/* 同排价格卡片网格: 4 列严格并排 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--ice-red-light);
  box-shadow: 0 0 25px rgba(255, 42, 95, 0.3);
}

/* 推荐热门卡片 */
.pricing-card.featured {
  border: 1.5px solid var(--ice-red);
  background: rgba(26, 18, 36, 0.85);
  box-shadow: 0 0 32px rgba(255, 42, 95, 0.28);
}

.card-ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-neon);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(255, 42, 95, 0.45);
}

.card-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 20px;
  margin-bottom: 20px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-price-wrap {
  margin: 18px 0 8px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--neon-cyan);
}

.plan-price {
  font-size: 2.6rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
  font-feature-settings: "tnum";
}

.plan-period {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-billing-tip {
  font-size: 0.78rem;
  color: var(--neon-green);
  display: block;
}

.card-features {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.card-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: #cbd5e1;
  margin-bottom: 12px;
}

.card-features li svg {
  flex-shrink: 0;
  color: var(--neon-green);
}

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

.card-action .btn {
  width: 100%;
}

/* 全球节点网络分布展示 */
.nodes-section {
  position: relative;
}

.nodes-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

.nodes-info h3 {
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.nodes-info p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.nodes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.node-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

.node-flag {
  font-size: 1.35rem;
}

.node-name {
  font-weight: 600;
  color: #ffffff;
}

.node-latency {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--neon-green);
  font-feature-settings: "tnum";
}

/* ==========================================================================
   文章知识专栏预览 (Articles Section)
   ========================================================================== */
.articles-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.article-card-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--neon-cyan);
  margin-bottom: 12px;
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
}

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

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

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-sub);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 14px;
}

/* ==========================================================================
   用户真实评价 (Testimonials / Reviews)
   ========================================================================== */
.reviews-section {
  background: rgba(10, 16, 30, 0.6);
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

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

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

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: #04101e;
  flex-shrink: 0;
}

.review-user-info {
  display: flex;
  flex-direction: column;
}

.review-user-name {
  font-weight: 700;
  font-size: 0.98rem;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 6px;
}

.review-badge-verified {
  font-size: 0.72rem;
  background: rgba(0, 255, 135, 0.15);
  color: var(--neon-green);
  border: 1px solid rgba(0, 255, 135, 0.3);
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

.review-user-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.review-stars {
  color: #fbbf24;
  font-size: 0.95rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.review-quote {
  font-size: 0.92rem;
  color: #cbd5e1;
  line-height: 1.65;
  margin-bottom: 16px;
  font-style: normal;
}

.review-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-sub);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
}

/* ==========================================================================
   常见问题 FAQ 手风琴
   ========================================================================== */
.faq-section {
  position: relative;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  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);
}

.faq-item:hover {
  border-color: rgba(0, 242, 254, 0.35);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--neon-cyan);
}

.faq-icon {
  font-size: 1.3rem;
  color: var(--neon-cyan);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  transition: max-height 0.4s ease-in-out;
}

.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 底部 CTA 通栏 */
.cta-banner {
  background: linear-gradient(135deg, rgba(14, 30, 60, 0.9) 0%, rgba(9, 15, 28, 0.95) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  margin-top: 40px;
  box-shadow: 0 0 40px rgba(0, 242, 254, 0.15);
  position: relative;
  overflow: hidden;
}

.cta-banner-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-banner-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 30px;
}

/* 页脚 Footer */
.site-footer {
  background: #04070e;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 60px 0 30px;
  margin-top: 80px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

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

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a:hover {
  color: var(--neon-cyan);
}

.footer-brand p {
  line-height: 1.7;
  margin-top: 14px;
  max-width: 320px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
}

.footer-disclaimer {
  max-width: 650px;
  line-height: 1.5;
  color: var(--text-sub);
}

/* ==========================================================================
   响应式断点适配 (Media Queries)
   ========================================================================== */
@media (max-width: 1100px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid, .articles-preview-grid, .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu, .nav-actions {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid, .articles-preview-grid, .reviews-grid {
    grid-template-columns: 1fr;
  }
  .nodes-container {
    grid-template-columns: 1fr;
  }
  /* 在移动端，价格卡片支持横向平滑滚动以保持同排对比 */
  .pricing-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 20px;
    gap: 16px;
  }
  .pricing-card {
    min-width: 270px;
    scroll-snap-align: start;
    flex-shrink: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}