/* ==========================================================================
   ByWave (bywave.click) - 全球顶级 IPLC 专线机场官方落地页样式表
   极速原生 CSS · 零第三方依赖 · 极致加载秒开体验 · 科技美学排版
   ========================================================================== */

:root {
  --bg-main: #070B19;
  --bg-card: rgba(13, 21, 47, 0.72);
  --bg-card-hover: rgba(19, 31, 66, 0.85);
  --bg-card-border: rgba(0, 240, 255, 0.16);
  --bg-card-border-hover: rgba(0, 240, 255, 0.45);
  
  --primary: #00F0FF;
  --primary-hover: #38BDF8;
  --primary-glow: rgba(0, 240, 255, 0.35);
  --accent: #0066FF;
  --accent-purple: #8B5CF6;
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --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;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #12214E 0%, #070B19 75%);
}

/* 动态背景画布 */
#dynamic-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

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

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

/* ==========================================================================
   通用按纽与标签组件
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  gap: 8px;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #00F0FF 0%, #0080FF 100%);
  color: #070B19;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 240, 255, 0.55);
  background: linear-gradient(135deg, #38BDF8 0%, #0066FF 100%);
  color: #FFFFFF;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: rgba(0, 240, 255, 0.3);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(0, 240, 255, 0.12);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-pulse {
  animation: pulseLight 3s infinite;
}

@keyframes pulseLight {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
  }
  50% {
    box-shadow: 0 0 35px rgba(0, 240, 255, 0.75);
  }
}

/* ==========================================================================
   顶部导航栏 (Header)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(7, 11, 25, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 240, 255, 0.15);
  padding: 10px 0;
}

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

.logo-wrapper {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: var(--transition);
}

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

.logo-wrapper:hover {
  opacity: 0.92;
  transform: scale(1.02);
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

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

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: var(--primary);
  font-size: 1.5rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ==========================================================================
   首屏 Hero 区域
   ========================================================================== */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.3);
  margin-bottom: 24px;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: #10B981;
  box-shadow: 0 0 10px #10B981;
  animation: blink 2s infinite ease-in-out;
}

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

.hero-badge-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: clamp(2.3rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.22;
  margin-bottom: 22px;
  letter-spacing: -0.5px;
}

.hero-title-highlight {
  background: linear-gradient(135deg, #00F0FF 0%, #38BDF8 50%, #818CF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 40px rgba(0, 240, 255, 0.3);
}

.hero-subtitle {
  max-width: 820px;
  margin: 0 auto 32px;
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 核心关键词标签群 */
.hero-keywords {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  max-width: 960px;
  margin: 0 auto 36px;
}

.keyword-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(13, 21, 47, 0.85);
  border: 1px solid rgba(0, 240, 255, 0.2);
  color: #E2E8F0;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
}

.keyword-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  background: rgba(0, 240, 255, 0.1);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 50px;
}

/* 信任指标栏 */
.hero-trust-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 980px;
  margin: 0 auto;
  padding: 24px;
  background: rgba(13, 21, 47, 0.6);
  backdrop-filter: blur(12px);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
}

.trust-item {
  text-align: center;
  padding: 8px;
}

.trust-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 4px;
}

.trust-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   通用 Section 规范
   ========================================================================== */
.section {
  padding: 70px 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 4px 12px;
  background: rgba(0, 240, 255, 0.08);
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   价格区域：所有价格严格同排排布 (PRICING SECTION)
   ========================================================================== */
.pricing-section {
  background: linear-gradient(180deg, rgba(7, 11, 25, 0) 0%, rgba(13, 21, 47, 0.4) 50%, rgba(7, 11, 25, 0) 100%);
}

.pricing-notice {
  margin-top: 14px;
  font-size: 0.92rem;
  color: #38BDF8;
  background: rgba(56, 189, 248, 0.1);
  display: inline-block;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  border: 1px dashed rgba(56, 189, 248, 0.4);
}

.pricing-grid-wrapper {
  width: 100%;
  overflow-x: auto;
  padding-bottom: 16px;
}

/* 核心：桌面端严格 4 列同排布局 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  min-width: 1020px; /* 保证水平排布不被极端压缩 */
}

.pricing-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--bg-card-border-hover);
  box-shadow: 0 16px 36px rgba(0, 240, 255, 0.15);
  background: var(--bg-card-hover);
}

.pricing-card.featured {
  border-color: #00F0FF;
  background: linear-gradient(180deg, rgba(0, 240, 255, 0.12) 0%, rgba(13, 21, 47, 0.9) 100%);
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.25);
}

.pricing-card.featured:hover {
  box-shadow: 0 20px 45px rgba(0, 240, 255, 0.35);
}

.plan-ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, #00F0FF, #0080FF);
  color: #070B19;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 10px rgba(0, 240, 255, 0.5);
  white-space: nowrap;
}

.plan-header {
  margin-bottom: 20px;
}

.plan-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  background: rgba(0, 240, 255, 0.1);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.plan-name {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: #FFFFFF;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  min-height: 42px;
  line-height: 1.5;
}

.plan-price-box {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.price-currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  vertical-align: top;
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 900;
  color: #FFFFFF;
  line-height: 1;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.price-sub-note {
  font-size: 0.78rem;
  color: #38BDF8;
  margin-top: 6px;
}

.plan-features {
  list-style: none;
  margin-bottom: 30px;
}

.plan-features li {
  font-size: 0.88rem;
  color: #E2E8F0;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.45;
}

.feature-check {
  color: #10B981;
  font-weight: bold;
}

.plan-cta {
  width: 100%;
}

/* ==========================================================================
   核心优势 (Features)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.feature-box:hover {
  transform: translateY(-6px);
  border-color: var(--bg-card-border-hover);
  box-shadow: 0 12px 30px rgba(0, 240, 255, 0.12);
  background: var(--bg-card-hover);
}

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

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

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

/* ==========================================================================
   全球专线节点表格 (Nodes)
   ========================================================================== */
.nodes-table-wrap {
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 820px;
}

.nodes-table th, .nodes-table td {
  padding: 18px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nodes-table th {
  background: rgba(0, 240, 255, 0.06);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.nodes-table td {
  font-size: 0.92rem;
  color: #E2E8F0;
}

.nodes-table tr:hover td {
  background: rgba(0, 240, 255, 0.04);
}

.node-region-cell {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.region-flag {
  font-size: 1.3rem;
}

.node-ping-low {
  color: #10B981;
  font-weight: 700;
}

.node-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #10B981;
  background: rgba(16, 185, 129, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   多平台客户端支持 (Clients)
   ========================================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  text-align: center;
  transition: var(--transition);
}

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

.client-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.client-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: #FFFFFF;
}

.client-tools {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   文章展示专区 (Articles Showcase)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--bg-card-border-hover);
  box-shadow: 0 14px 32px rgba(0, 240, 255, 0.12);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-badge {
  background: rgba(0, 240, 255, 0.12);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.45;
}

.article-card-title a {
  color: #FFFFFF;
  text-decoration: none;
  transition: var(--transition);
}

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

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

.article-link-more:hover {
  color: var(--primary-hover);
  transform: translateX(4px);
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-5px);
  border-color: var(--bg-card-border-hover);
}

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

.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00F0FF, #0066FF);
  color: #070B19;
  font-weight: 800;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 240, 255, 0.3);
}

.review-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
}

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

.review-stars {
  color: #F59E0B;
  font-size: 0.95rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-body {
  font-size: 0.9rem;
  color: #CBD5E1;
  line-height: 1.65;
  font-style: normal;
}

/* ==========================================================================
   常见问题 FAQ (<details> 原生极速组件)
   ========================================================================== */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

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

.faq-question {
  padding: 20px 24px;
  font-size: 1.05rem;
  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-question::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--primary);
  font-weight: 400;
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  content: "−";
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px 24px;
  font-size: 0.94rem;
  color: #CBD5E1;
  line-height: 1.7;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: 16px;
}

/* ==========================================================================
   权威外链生态 (External Links)
   ========================================================================== */
.ext-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

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

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

.ext-link-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.ext-link-name {
  font-size: 0.98rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 2px;
}

.ext-link-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */
.site-footer {
  margin-top: auto;
  border-top: 1px solid rgba(0, 240, 255, 0.12);
  background: #040711;
  padding: 60px 0 30px;
}

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

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h5::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--primary);
}

/* ==========================================================================
   响应式断点适配 (Responsive Design)
   ========================================================================== */
@media (max-width: 1080px) {
  .features-grid, .articles-grid, .reviews-grid, .ext-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 12px 0;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(7, 11, 25, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-actions {
    display: none;
  }
  .hero-trust-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .features-grid, .articles-grid, .reviews-grid, .ext-links-grid, .clients-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  /* 移动端价格水平滑动条，确保所有价格仍同排展示且不被压扁 */
  .pricing-grid-wrapper {
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
  }
  .pricing-card {
    scroll-snap-align: start;
  }
}