/* ==========================================================================
   小旋风加速器 - 全站核心样式系统
   遵循现代高端科技感设计，支持高精度视网膜屏与全终端自适应
   ========================================================================== */

:root {
  /* 品牌色系 */
  --primary-blue: #0099ff;
  --primary-cyan: #00b4d8;
  --accent-cyan: #00f2fe;
  --accent-glow: rgba(0, 153, 255, 0.35);
  --gradient-btn: linear-gradient(135deg, #0099ff 0%, #00b4d8 100%);
  --gradient-btn-hover: linear-gradient(135deg, #1aa3ff 0%, #1fc8ed 100%);
  --gradient-text: linear-gradient(135deg, #ffffff 30%, #a5b4fc 70%, #00b4d8 100%);
  
  /* 暗色系背景与面板 */
  --bg-dark: #090d16;
  --bg-card: rgba(18, 26, 44, 0.72);
  --bg-card-hover: rgba(26, 38, 64, 0.85);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-bright: rgba(0, 153, 255, 0.28);
  
  /* 文字色彩 */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  /* 警告色 */
  --warning-amber: #f59e0b;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #92400e;
  
  /* 基础尺寸与过渡 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --container-max: 1200px;
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #131d36 0%, #090d16 65%);
}

body.modal-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

img, svg {
  display: block;
}

/* 容器定义 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   一、系统服务异常警示弹窗 (严格遵循设计规范)
   ========================================================================== */

/* 遮罩层 (Backdrop) */
.anomaly-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  /* 规范要求: backdrop-filter: blur(8px); background: rgba(0, 0, 0, 0.45); */
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  background: rgba(0, 0, 0, 0.45);
  
  /* 初始隐藏状态，用于 300ms 延迟淡入 */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.32s ease, visibility 0.32s ease;
}

/* 激活状态 */
.anomaly-modal-backdrop.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* 弹窗卡片 (Modal Container) */
.anomaly-modal-container {
  position: relative;
  width: 100%;
  max-width: 440px; /* 规范要求最大宽度 440px */
  background: #ffffff; /* 规范要求纯白背景 */
  border-radius: 16px; /* 规范要求圆角 16px */
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25); /* 规范要求深层柔和阴影 */
  padding: 32px 28px 28px;
  color: #1e293b;
  text-align: center;
  
  /* 平滑缩放与滑入动效 */
  transform: translateY(16px) scale(0.96);
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

.anomaly-modal-backdrop.is-active .anomaly-modal-container {
  transform: translateY(0) scale(1);
}

/* 右上角轻量关闭按钮“✕” */
.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
  color: #94a3b8;
  background: rgba(0, 0, 0, 0.04);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: #334155;
  background: rgba(0, 0, 0, 0.08);
  transform: scale(1.08);
}

/* 警告标题与图标 */
.modal-warning-header {
  margin-bottom: 18px;
}

.modal-warning-icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #fef3c7;
  color: #d97706;
  font-size: 26px;
  margin-bottom: 12px;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.18);
}

.modal-warning-title {
  font-size: 20px;
  font-weight: 700;
  color: #0f172a; /* 规范要求文字深色加粗，居中排版 */
  letter-spacing: -0.2px;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* 公告正文 (严格使用方案一文案) */
.modal-warning-body {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.68;
  color: #334155;
  text-align: justify;
  letter-spacing: 0.1px;
  margin-bottom: 24px;
}

.modal-warning-body p {
  margin: 0;
}

.modal-warning-body strong {
  color: #d97706;
  font-weight: 600;
}

/* 核心行动按钮 (CTA - 规范定义) */
.modal-cta-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  background: var(--gradient-btn); /* 高亮亮蓝渐变 #0099ff 到 #00b4d8 */
  border-radius: 999px; /* 规范要求大圆角药丸按钮 */
  box-shadow: 0 8px 24px rgba(0, 153, 255, 0.36);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.modal-cta-btn:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 12px 30px rgba(0, 153, 255, 0.52);
  transform: translateY(-2px);
  filter: brightness(1.08); /* 悬停微动效与亮度提升 */
}

.modal-cta-btn:active {
  transform: translateY(0);
}

.modal-cta-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  transition: transform 0.2s ease;
}

.modal-cta-btn:hover svg {
  transform: translateX(3px);
}

.modal-footer-tip {
  margin-top: 14px;
  font-size: 12px;
  color: #94a3b8;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

/* ==========================================================================
   二、底层落地页骨架样式
   ========================================================================== */

/* 顶部全站警告通知条 */
.top-notice-bar {
  background: linear-gradient(90deg, #991b1b 0%, #b91c1c 50%, #991b1b 100%);
  color: #fff;
  font-size: 13px;
  padding: 8px 16px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
  position: relative;
  z-index: 40;
}

.top-notice-bar .notice-text {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.top-notice-bar .notice-link {
  color: #fef08a;
  text-decoration: underline;
  cursor: pointer;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 2px;
  transition: opacity 0.2s;
}

.top-notice-bar .notice-link:hover {
  opacity: 0.85;
}

/* 顶部页眉 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.82);
  border-bottom: 1px solid var(--border-glass);
}

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

/* 品牌 Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.3px;
  color: #ffffff;
}

.site-logo .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.site-logo .logo-icon svg {
  width: 20px;
  height: 20px;
  fill: #ffffff;
}

.site-logo .brand-text {
  background: linear-gradient(135deg, #ffffff 60%, #bae6fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  padding: 6px 0;
  position: relative;
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-links a.active {
  color: var(--primary-cyan);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 按钮通用 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  background: var(--gradient-btn);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 153, 255, 0.45);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

/* 移动端菜单切换汉堡按钮 */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: 0.3s;
}

/* 移动端下拉菜单 */
.mobile-nav-menu {
  display: none;
  background: #0f172a;
  border-bottom: 1px solid var(--border-glass);
  padding: 16px 24px 20px;
}

.mobile-nav-menu.is-open {
  display: block;
}

.mobile-nav-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav-menu a {
  display: block;
  font-size: 15px;
  padding: 8px 0;
  color: var(--text-muted);
}

.mobile-nav-menu a:hover {
  color: #ffffff;
}

/* ==========================================================================
   三、主视觉区 (Hero Section)
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 72px 0 64px;
  text-align: center;
  overflow: hidden;
}

.hero-glow-bg {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 350px;
  background: radial-gradient(circle, rgba(0, 153, 255, 0.18) 0%, rgba(0, 180, 216, 0.05) 50%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(0, 153, 255, 0.1);
  border: 1px solid rgba(0, 153, 255, 0.3);
  font-size: 13px;
  font-weight: 500;
  color: #38bdf8;
  margin-bottom: 24px;
}

.hero-badge-wrap .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 10px #38bdf8;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(56, 189, 248, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}

.hero-title {
  font-size: 48px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

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

.hero-subtitle {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 36px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-cta-group .btn-primary {
  padding: 14px 32px;
  font-size: 16px;
}

.hero-cta-group .btn-secondary {
  padding: 14px 32px;
  font-size: 16px;
}

/* 核心指标条 (Metrics Row) */
.hero-metrics-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.metric-item {
  text-align: center;
  border-right: 1px solid var(--border-glass);
}

.metric-item:last-child {
  border-right: none;
}

.metric-value {
  font-size: 28px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #ffffff 40%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ==========================================================================
   四、核心优势卡片区 (Core Advantages)
   规范要求：3 个简洁特性的图文卡片（高速节点、全平台兼容、安全加密）
   ========================================================================== */
.section-advantages {
  padding: 72px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--primary-cyan);
  margin-bottom: 10px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-muted);
}

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

.advantage-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.advantage-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-bright);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35), 0 0 20px rgba(0, 153, 255, 0.12);
}

.advantage-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(0, 153, 255, 0.12);
  border: 1px solid rgba(0, 153, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--primary-cyan);
}

.advantage-icon-box svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

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

.advantage-text {
  font-size: 14px;
  line-height: 1.68;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-grow: 1;
}

.advantage-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding-top: 14px;
  border-top: 1px solid var(--border-glass);
}

.advantage-badges li {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: #cbd5e1;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   五、节点集群与网络监控专区 (Live Network Status)
   ========================================================================== */
.section-nodes {
  padding: 48px 0 72px;
}

.node-table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.node-table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.node-table-title {
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-status-tag {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.node-status-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.node-item-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.node-item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.node-name {
  font-size: 14px;
  font-weight: 600;
  color: #f1f5f9;
  display: flex;
  align-items: center;
  gap: 6px;
}

.node-ping {
  font-size: 12px;
  font-weight: 600;
  color: #10b981;
}

.node-item-meta {
  font-size: 12px;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
}

/* ==========================================================================
   六、套餐及立即跳转导流卡片 (Pricing & CTA Section)
   ========================================================================== */
.section-pricing {
  padding: 48px 0 72px;
  position: relative;
}

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

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(14, 30, 60, 0.9) 0%, rgba(9, 13, 22, 0.95) 100%);
  border-color: rgba(0, 153, 255, 0.4);
  box-shadow: 0 12px 36px rgba(0, 153, 255, 0.16);
  transform: scale(1.03);
}

.pricing-badge-popular {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.5px;
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glass-bright);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-4px);
}

.pricing-plan-name {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.pricing-plan-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.pricing-plan-price {
  font-size: 32px;
  font-weight: 800;
  color: #38bdf8;
  margin-bottom: 24px;
}

.pricing-plan-price small {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-dim);
}

.pricing-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 13px;
  color: #cbd5e1;
  margin-bottom: 28px;
  flex-grow: 1;
}

.pricing-features-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-features-list svg {
  width: 16px;
  height: 16px;
  fill: #38bdf8;
  flex-shrink: 0;
}

/* ==========================================================================
   七、底部页脚 (Site Footer)
   规范要求：提供“网站地图”“关于我们”“服务条款”“隐私政策”链接及版权信息
   ========================================================================== */
.site-footer {
  background: #05080e;
  border-top: 1px solid var(--border-glass);
  padding: 56px 0 32px;
  font-size: 13px;
  color: var(--text-dim);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 380px;
}

.footer-brand .site-logo {
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.6;
}

.footer-links-group {
  display: flex;
  gap: 48px;
}

.footer-col h4 {
  font-size: 14px;
  color: #f1f5f9;
  margin-bottom: 14px;
  font-weight: 600;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.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;
}

.footer-compliance-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-compliance-links a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-compliance-links a:hover {
  color: #ffffff;
}

/* ==========================================================================
   八、移动端优先适配 (Responsive Media Queries)
   规范要求：手机竖屏下单栏排列，无横向滚动条，各按钮点击区域便于手指触控
   ========================================================================== */
@media (max-width: 992px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .node-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .hero-subtitle {
    font-size: 15px;
  }
  
  .hero-metrics-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 12px;
  }
  
  .metric-item:nth-child(2) {
    border-right: none;
  }
  
  .advantages-grid {
    grid-template-columns: 1fr; /* 手机竖屏下单栏排列 */
  }
  
  .pricing-grid {
    grid-template-columns: 1fr; /* 手机竖屏单栏 */
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
  
  .node-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
  }
  
  .footer-links-group {
    flex-wrap: wrap;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  /* 移动端弹窗针对性优化 */
  .anomaly-modal-container {
    padding: 26px 18px 22px;
    margin: 0 12px;
  }
  
  .modal-warning-title {
    font-size: 18px;
  }
  
  .modal-warning-body {
    font-size: 13.5px;
    padding: 14px 14px;
    line-height: 1.6;
  }
  
  .modal-cta-btn {
    padding: 13px 18px;
    font-size: 15px;
  }
}